CN214845074U - Gas sensor - Google Patents

Abstract

The utility model discloses a gas sensor, its main body upper cover has closed the lid in the space of admitting air, and has seted up an air inlet and a gas outlet on this lid respectively, utilizes the detection gas to get into in this space of admitting air by this air inlet to this detection gas receives the sensor in the confined space of admitting air and detects, can effectively avoid this detection gas to receive the distortion that factors such as external environment, air current influence caused, effectively improves this detection gas and detects the accuracy nature of process.

Description

Gas sensor

Technical Field

The present invention relates to a sensor, and more particularly to a gas sensor.

Background

In general life, most gases are colorless and odorless, and certain gases, particularly waste gases discharged from some factories, are easy to cause harm to human bodies and the environment; however, with the improvement of living standards and the increasing attention on environmental protection, higher requirements are put forward on the detection of various toxic and harmful gases, the monitoring of air pollution and industrial waste gas and the detection of environmental quality, a sensor which is one of sensory or signal input parts is indispensable, and the sensor can detect and analyze various gases, so that the sensor is widely applied to the fields of medicine, environmental protection, quality inspection, home furnishing and the like.

Referring to fig. 1, a conventional gas sensor 1 includes a body 11, and a sensor 12 disposed on the body 11; wherein, the sensor 12 has a sensing member 121, and a processor 122 connected to the sensing member 121; therefore, when the conventional gas sensor 1 is used, it must be installed in an environmental space 2 to be measured, then the conventional gas sensor 1 is connected to a power source 123 to drive the conventional gas sensor 1, so as to perform a detection operation of the detection gas 3, and finally the sensor 12 converts the detection signal of the components contained in the detection gas 3 into a telecommunication signal, and outputs the obtained detection data through the processor 122 as the basis of the change of the environmental gas; however, after practical use, it is found that the conventional gas sensor 1 has a use limitation that it must be powered on and fixedly installed in the environment space 2 to be detected, which results in the prior installation of position or wiring, and requires a lot of installation for use, which further increases the inconvenience of use, and at the same time, the environment space 2 to be detected is easily affected by factors such as external environment and airflow, so that the detection gas 3 is easily subjected to various factors such as insufficient pressure or a small amount of components contained in the gas, which results in the sensor 12 being unable to accurately detect in real time, and thus the accuracy of detection is reduced, which needs to be improved; moreover, in the installation process of the conventional gas sensor 1, data detection must be performed after power-on, and the data slowly tends to be correct along with the extension of the detection time, which means that the installation and use cannot be immediately known in the instant installation test, and a period of verification must be performed to confirm whether the detector normally operates, so as to determine whether the obtained detection value is correct, and improvement is needed.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims at providing a gas sensor, its accuracy that can effectively promote the detection.

Therefore, the gas sensor of the utility model comprises a body, a sensor arranged on the body and a cover body which can cover the body and forms an air inlet space inside; the body is provided with a top surface, a bottom surface and an inner accommodating space which is formed by enclosing the top surface and the bottom surface, and the inductor is provided with an induction piece arranged on the top surface and a processor which is accommodated in the inner accommodating space and is in signal connection with the induction piece; the cover body is provided with an air inlet and an air outlet, the air inlet and the air outlet are communicated with the air inlet space, and the air inlet space is adjacent to the sensing piece; therefore, when the gas detection device is used, a detection gas enters the gas inlet space through the gas inlet, and the detection gas is detected by the sensor in the closed gas inlet space, so that the distortion caused by the influence of factors such as external environment and gas flow on the detection gas can be effectively avoided, and the accuracy of the detection process of the detection gas is effectively improved.

Preferably, an interlayer is arranged in the air inlet space, the interlayer divides the air inlet space into a first air chamber and a second air chamber, and an air hole is formed in the interlayer, so that the first air chamber and the second air chamber are communicated through the air hole.

Preferably, an air inlet group is arranged outside the air inlet to suck the detection gas into the air inlet space.

Preferably, an air inlet group is arranged in the air inlet space to suck the detection gas into the air inlet space.

Preferably, the air inlet and the air outlet are both provided with a one-way air valve.

Preferably, the number of the air holes may be plural.

Preferably, the cover body is provided with a pressure relief hole, and the pressure relief hole is communicated with the air inlet space.

Preferably, the system further comprises a standby power supply, and the standby power supply is connected with the processor.

Drawings

Fig. 1 is a sectional view showing a state of use of a conventional gas sensor.

Fig. 2 is a three-dimensional exploded sectional view of the first preferred embodiment of the present invention.

Fig. 3 is a sectional view showing a state of use of the first preferred embodiment.

Fig. 4 is a perspective exploded sectional view of a second preferred embodiment of the present invention.

Fig. 5 is a sectional view showing a state of use of the second preferred embodiment.

Fig. 6 is a sectional view of a third preferred embodiment of the present invention.

Description of the symbols:

(conventional)

1: conventional gas sensor

11: body

12: sensor with a sensor element

121: induction part

122: processor with a memory having a plurality of memory cells

123: power supply

2; environmental space to be measured

3: detecting gas

(the utility model)

4: gas sensor

41: body

42: sensor with a sensor element

43: cover body

411: the top surface

412: bottom surface

413: inner containing space

421: induction part

422: processor with a memory having a plurality of memory cells

431: air intake space

432: air inlet

433: air outlet

434: one-way air valve

435: interlayer

436: first air chamber

437: second air chamber

438: air hole

439: pressure relief hole

44: air inlet group

5: detecting gas

6: detecting an environment

7: power supply

71: a backup power source.

Detailed Description

The foregoing and other features, aspects and utilities of the present invention will be apparent from the following more particular description of preferred embodiments of the invention when read in conjunction with the accompanying drawings.

Referring to fig. 2, in a first preferred embodiment of the present invention, the gas sensor 4 includes a body 41, a sensor 42 disposed on the body 41, and a cover 43 covering the body 41; wherein the body 41 has a top surface 411, a bottom surface 412, and an inner accommodating space 413 formed around the top surface 411 and the bottom surface 412; in addition, the sensor 42 has a sensing element 421 disposed on the top surface 411, and a processor 422 disposed in the inner accommodating space 413 and in signal connection with the sensing element 421.

As mentioned above, an air inlet space 431 is formed inside the cover 43, so when the cover 43 is covered on the main body 41, the air inlet space 431 is just adjacent to the sensing element 421, and the sensing element 421 forms a closed state, and the cover 43 is provided with a pressure relief hole 439 communicating with the air inlet space 431, and an air inlet 432 and an air outlet 433 communicating with the air inlet space 431, and the air inlet 432 and the air outlet 433 can be provided with a one-way air valve 434 to limit the inlet and outlet of a detection gas 5 from the air inlet 432 and the air outlet 433; in addition, in order to make the gas inlet 432 smoothly send the detection gas 5, an air inlet set 44 may be disposed outside the gas inlet 432, or the air inlet set 44 may be directly disposed in the air inlet space 431, and the air inlet set 44 is disposed outside the gas inlet 432 in this embodiment as an example.

Referring to fig. 3, when the gas sensor 4 is used, firstly, the gas sensor 4 is installed in a detection environment 6, and is connected with a power supply 7 for supplying power, so that the gas sensor 4 can operate, the detection gas 5 is collected into the gas inlet space 431 through the gas inlet set 44, so that the sensing element 421 can sense, if the detection gas 5 is too much introduced, the gas can be exhausted through the pressure relief hole 439 to maintain stable gas pressure in the gas inlet space 431, then the detection gas 5 is detected by the sensing element 421, the sensing element 421 can pass the detection message through the processor 422, convert the detection message into detection data, and output the detection data as the basis of the change of the environmental gas, and when the detection gas 5 is detected, the detection gas is exhausted from the gas outlet 433; therefore, the detection gas 5 can be effectively prevented from being influenced by factors such as external environment, airflow and the like, the detection accuracy of the detection gas 5 is prevented from being reduced due to the limitation of various factors such as insufficient pressure or tiny gas content, and the accuracy of the detection value is greatly improved.

Referring to fig. 4, a gas sensor 4 according to a second preferred embodiment of the present invention includes a body 41, a sensor 42 disposed on the body 41, and a cover 43 covering the body 41; wherein, the structure and efficacy of the body 41 and the sensor 42 are the same as those of the first embodiment, and detailed descriptions are omitted; the present embodiment is particularly characterized in that: a partition 435 is disposed in the air inlet space 431, the partition 435 divides the air inlet space 431 into a first air chamber 436 and a second air chamber 437, an air hole 438 is disposed on the partition 435, the air hole 438 can be disposed in plural numbers, in this embodiment, a single hole is taken as an example, the air hole 438 communicates the first air chamber 436 with the second air chamber 437, the air inlet 432 is communicated with the first air chamber 436, and the air outlet 433 is communicated with the second air chamber 437.

Referring to fig. 5, when the gas sensor 4 detects the detecting gas 5, firstly, the detecting gas 5 is sucked into the first gas chamber 436 through the gas inlet set 44 for collection, of course, if the detecting gas 5 is sucked too much, the gas can be exhausted through the pressure relief hole 439 to stabilize the gas pressure in the first gas chamber 436, the detecting gas 5 enters the second gas chamber 437 through the gas hole 438 to be sensed by the sensing element 421, and the sensing element 421 converts the sensing information into the detecting data through the processor 422 and outputs the detecting data as the basis of the change of the ambient gas, so that the composition of the detecting gas 5 can be detected more accurately.

Referring to fig. 6, the gas sensor 4 according to the third preferred embodiment of the present invention is described by taking the second preferred embodiment as an example, and the embodiment particularly includes: the gas sensor 4 may further include a standby power source 71, and the standby power source 71 may be connected to the processor 422 to provide power to the processor 422 for use, so that the gas sensor 4 may be carried about or used during power failure, and thus the detection operation may be maintained without an external power source during detection by the processor 422, which further increases the convenience of use.

Concluding up aforementioned, the utility model discloses gas sensor borrows by a lid design for a detection gas just receives a sensor detection in an enclosure, can effectively avoid this detection gas to receive the distortion that factors such as external environment, air current influence caused, effectively improves this detection gas detection process's accuracy nature.

However, the above description is only for the purpose of illustrating the preferred embodiments of the present invention, and should not be taken as limiting the scope of the present invention, which is defined by the claims and the description of the present invention.

Claims (8)

1. A gas sensor comprises a body and a sensor arranged on the body, wherein the body is provided with a top surface, a bottom surface and a processor which surrounds the top surface and the bottom surface to form an inner accommodating space; the method is characterized in that:

the body is covered by a cover body, an air inlet space is formed inside the cover body, the air inlet space is adjacent to the sensing piece after the cover body covers the body, an air inlet and an air outlet which are communicated with the air inlet space are respectively formed in the cover body, so that detection gas can enter and exit the air inlet space, and the detection gas can be detected by the sensing piece in the closed air inlet space.

2. The gas sensor according to claim 1, wherein: the air inlet space is internally provided with an interlayer which divides the air inlet space into a first air chamber and a second air chamber, and the interlayer is provided with an air hole which enables the first air chamber and the second air chamber to form a communicated state.

3. The gas sensor according to claim 1, wherein: an air inlet group is arranged outside the air inlet to absorb the detection gas to enter the air inlet space.

4. The gas sensor according to claim 1, wherein: an air inlet group is arranged in the air inlet space to suck the detection gas into the air inlet space.

5. The gas sensor according to claim 1, wherein: one-way air valves are arranged on the air inlet and the air outlet.

6. The gas sensor according to claim 2, wherein: the number of the air holes may be plural.

7. The gas sensor according to claim 1, wherein: the cover body is provided with a pressure relief hole, and the pressure relief hole is communicated with the air inlet space.

8. The gas sensor according to claim 1, wherein: further comprises a standby power source connected with the processor.

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