Air quality detector

Abstract

The utility model relates to the technical field of environment monitoring, and particularly discloses an air quality detector which comprises an outer shell, a gas detection sensor module, a data processor and a negative pressure fan are fixedly arranged in the outer shell, a touch screen panel is fixedly arranged on the surface of the outer shell, a first filter element is embedded in an air inlet channel, and a second filter element is embedded in an air outlet channel. One end of the exhaust channel is communicated with the air outlet of the negative-pressure fan, and the other end is in threaded connection with the filter element II. According to the technical scheme, the first filter element is arranged at the inlet of the air inlet channel, dust protection can be carried out on a probe of the internal gas detection sensor module, negative pressure is generated at the air inlet channel through the negative pressure fan, airflow of a detection environment can be gathered near the gas detection sensor module for detection, the detection efficiency is improved, and the detection cost is reduced. Meanwhile, the frequency converter is used for increasing the power of the negative pressure fan, the second filter element can be subjected to back flushing, and the effect of rapidly cleaning the filter elements is achieved after the second filter element and the first filter element are replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental monitoring, in particular to an air quality detector. Background Art

[0002] It is of great significance to carry out gas detection in renovated rooms, which is mainly reflected in the following aspects: Newly renovated rooms usually release volatile organic compounds such as formaldehyde, which may cause harm to human health, such as irritating the respiratory tract, causing allergic reactions, etc. Through gas detection, it is possible to promptly detect whether the concentration of formaldehyde and other VOCs exceeds the standard, and take corresponding measures to protect the health of residents; the fuel gas and coal gas used in decoration may produce carbon monoxide. If the ventilation is poor or the equipment fails, carbon monoxide may accumulate to a dangerous level. Carbon monoxide is a colorless, odorless, toxic gas. High concentrations of carbon monoxide can affect oxygen transport in the blood, leading to poisoning or even death. Therefore, detecting carbon monoxide concentrations is an important step in ensuring indoor air safety.

[0003] At present, there are many air detectors on the market, which use sensors suitable for corresponding gases to detect and display gas concentration. In order to improve the detection effect, some detectors will use negative pressure fans. This approach is conducive to accelerating the passage of gas through the sensor probe, thereby improving detection efficiency. However, it is also easy for dust particles in the air to quickly contact the sensor probe, accelerating the clogging of the sensor probe. Therefore, it is necessary to set a filtering structure in the air intake channel. The filtering structure needs to be cleaned after a period of use, and cleaning equipment needs to be used. The cleaning is more troublesome, which greatly increases the cost of use. It is urgently needed to be improved. Therefore, we propose an air quality detector. Utility Model Content

[0004] The purpose of the utility model is to provide an air quality detector to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an air quality detector, comprising an outer shell, a gas detection sensor module, a data processor, and a negative pressure fan are fixedly arranged inside the outer shell, a touch screen panel is fixedly arranged on the surface of the outer shell, an air inlet channel is connected to the top of the outer shell, a filter element 1 is embedded in the air inlet channel, an exhaust channel is connected to one side of the bottom end of the outer shell, one end of the exhaust channel is connected to the air outlet of the negative pressure fan, and the other end of the exhaust channel is threadedly connected to a filter element 2 with the same outer size as the filter element 1, the filter element 1 comprises a porous filter element, a threaded sleeve is integrally formed at the bottom of the porous filter element, and a sealing ring is integrally formed on the outside of the porous filter element.

[0006] As a preferred implementation of the technical solution of the present application, the filter element 1 is connected to the inside of the air inlet passage through an interference fit via a sealing ring.

[0007] As a preferred implementation of the technical solution of the present application, the filter element 2 is connected to the inner thread of the exhaust channel through a threaded sleeve.

[0008] As a preferred implementation of the technical solution of the present application, a frequency converter is fixedly installed on the bottom side of the outer shell, and the frequency converter is electrically connected to the negative pressure fan through a wire. A control panel is fixedly installed on the surface of the outer shell, and the control panel is electrically connected to the frequency converter through a wire.

[0009] As a preferred implementation of the technical solution of the present application, the air outlet end face of the negative pressure fan is fastened to the exhaust inlet end face of the exhaust duct by bolts, and a sealing gasket is arranged between the air outlet end face of the negative pressure fan and the exhaust inlet end face of the exhaust duct.

[0010] As a preferred implementation of the technical solution of the present application, the porous filter element includes a porous metal outer cover and a dust filter core lining, and the dust filter core lining is attached to the inner wall surface of the porous metal outer cover.

[0011] As a preferred implementation of the technical solution of the present application, the gas detection sensor module is located directly below the output port of the air inlet channel.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The technical solution of the present application provides a filter element 1 at the inlet of the air inlet passage to protect the probe of the internal gas detection sensor module from dust, and utilizes a negative pressure fan to generate negative pressure at the air inlet passage, which is beneficial for the airflow in the detection environment to gather near the gas detection sensor module for detection, thereby improving the detection efficiency. At the same time, a frequency converter is used to increase the power of the negative pressure fan, and filter element 2 can be backwashed. After replacing filter element 2 with filter element 1, the filter element can be quickly cleaned.

[0014] 2. The technical solution of the present application provides a sealing ring on the filter element, so that the filter element can be quickly assembled or disassembled with the air inlet channel. The filter element is provided with a threaded sleeve to facilitate stable cooperation with the exhaust channel to prevent the filter element from being washed away during backwashing, thereby simplifying the installation, disassembly and backwashing operations of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0016] Figure 1 This is a three-dimensional diagram of an air quality detector of the utility model;

[0017] Figure 2 It is a partial cross-sectional view of the air intake passage and the exhaust passage of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the filter element;

[0019] Figure 4 Schematic diagram of the structure inside the outer shell.

[0020] In the figure: 1. outer shell; 2. touch screen panel; 3. control panel; 4. exhaust channel; 5. filter element 2; 6. air intake channel; 7. filter element 1; 701. porous filter element; 702. sealing ring; 703. threaded sleeve; 8. gas detection sensor module; 9. data processor; 10. negative pressure fan; 11. inverter. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Embodiment 1, as Figure 1-4 As shown, the utility model provides a technical solution: an air quality detector, comprising an outer shell 1, a gas detection sensor module 8, a data processor 9, and a negative pressure fan 10 are fixedly arranged inside the outer shell 1, a touch screen panel 2 is fixedly arranged on the surface of the outer shell 1, an air inlet channel 6 is connected to the top of the outer shell 1, a filter element 7 is embedded in the air inlet channel 6, an exhaust channel 4 is connected to one side of the bottom end of the outer shell 1, one end of the exhaust channel 4 is connected to the air outlet of the negative pressure fan 10, and the other end of the exhaust channel 4 is threadedly connected to a filter element 5 with the same outer size as the filter element 7, the filter element 7 comprises a porous filter element 701, a threaded sleeve 703 is integrally formed at the bottom of the porous filter element 701, and a sealing ring 702 is integrally formed on the outside of the porous filter element 701.

[0023] In a specific embodiment of the present invention, the gas detection sensor module 8 includes a VOCs sensor and an infrared sensor. The VOCs sensor is used to detect volatile organic compounds such as formaldehyde, and the infrared sensor is used to detect the concentration of carbon monoxide. The data detected by the gas detection sensor module 8 is processed by a data processor 9 matched with the VOCs sensor and the infrared sensor and displayed on the touch screen panel 2. The power supply of the outer shell 1 can be a built-in battery or an external power supply. The control panel 3 controls the operating power of the negative pressure fan 10 through the inverter 11. When the detector is only used for gas detection, it is only necessary to control the negative pressure fan 10 to operate at low power. Negative pressure can also be generated at the air inlet channel 6. The detector is only used for gas During detection, a porous filter element 701 needs to be set at the entrance of the air inlet channel 6. The sealing ring 702 of the porous filter element 701 is tightly attached to the inner wall of the entrance of the air inlet channel 6 to prevent it from shaking easily. The porous shape of the porous filter element 701 itself can accommodate gas to enter. At the same time, the dust filter element can filter particulate dust to avoid clogging of the detection head of the gas detection sensor module 8. When the filter holes on the surface of the porous filter element 701 are blocked by dust particles, the filter element 1 7 and the filter element 2 5 can be swapped, and the operating power of the negative pressure fan 10 can be increased by adjusting the control panel 3. At this time, the exhaust channel 4 outputs a larger airflow, and the filter element that is threaded with the exhaust channel 4 can be backwashed and cleaned, thereby realizing the quick cleaning function of the filtering structure, expanding other functions of the negative pressure fan, and saving costs.

[0024] In the preferred technical solution, the filter element 7 is connected to the inside of the air inlet channel 6 by interference fitting via a sealing ring 702, so as to facilitate the rapid disassembly and assembly of the filter element and the air inlet channel 6.

[0025] In the preferred technical solution, the filter element 2 5 is connected to the internal thread of the exhaust channel 4 through the threaded sleeve 703, which facilitates the stable assembly of the filter element and the exhaust channel 4, thereby preventing the filter element from being washed away during backwashing.

[0026] In the preferred technical solution, a frequency converter 11 is fixedly arranged on the bottom side of the outer shell 1, and the frequency converter 11 is electrically connected to the negative pressure fan 10 through a wire. A control panel 3 is fixedly arranged on the surface of the outer shell 1, and the control panel 3 is electrically connected to the frequency converter 11 through a wire. The control panel 3 is convenient for directly adjusting the output component of the negative pressure fan 10 from the outside, thereby quickly switching between gas monitoring work and backwashing work.

[0027] In the preferred technical solution, the air outlet end face of the negative pressure fan 10 is fastened to the exhaust inlet end face of the exhaust duct 4 by bolts, and a sealing gasket is arranged between the air outlet end face of the negative pressure fan 10 and the exhaust inlet end face of the exhaust duct 4, so that the air outlet end face of the negative pressure fan 10 and the exhaust inlet end face of the exhaust duct 4 are fastened and tightly connected, thereby reducing air volume loss.

[0028] In the preferred technical solution, the porous filter element 701 includes a porous metal outer cover and a dust filter core lining. The dust filter core lining is attached to the inner wall surface of the porous metal outer cover. The porous shape of the porous filter element 701 itself can allow gas to enter. At the same time, the dust filter core can filter particulate dust to avoid blockage of the detection head of the gas detection sensor module 8.

[0029] In the preferred technical solution, the gas detection sensor module 8 is located directly below the output port of the air inlet channel 6, and can contact and detect the inhaled gas in a timely manner.

[0030] To summarize, this embodiment provides a method for expanding the negative pressure fan function of the original air quality detector by adding a filter structure in the air inlet channel to strengthen the protection of the internal gas detection sensor, thereby utilizing the blowing function of the negative pressure fan to backwash the filter structure that needs to be cleaned regularly, thereby eliminating the equipment cost of cleaning the filter structure.

Claims

1. An air quality detector, comprising an outer shell (1), wherein a gas detection sensor module (8), a data processor (9), and a negative pressure fan (10) are fixedly arranged inside the outer shell (1), and a touch screen panel (2) is fixedly arranged on the surface of the outer shell (1), characterized in that: The outer shell (1) is provided with an air inlet passage (6) at the top thereof, a filter element 1 (7) is embedded in the air inlet passage (6), an exhaust passage (4) is provided at one side of the bottom end thereof, one end of the exhaust passage (4) is connected to an air outlet of the negative pressure fan (10), and the other end of the exhaust passage (4) is threadedly connected to a filter element 2 (5) having an outer size consistent with that of the filter element 1 (7), the filter element 1 (7) comprising a porous filter element (701), a threaded sleeve (703) being integrally formed at the bottom of the porous filter element (701), and a sealing ring (702) being integrally formed on the outside of the porous filter element (701).

2. An air quality detector according to claim 1, characterized in that: The filter element 1 (7) is connected to the inside of the air inlet passage (6) by interference fitting via a sealing ring (702).

3. An air quality detector according to claim 1, characterized in that: The second filter element (5) is connected to the internal thread of the exhaust passage (4) through a threaded sleeve (703).

4. An air quality detector according to claim 1, characterized in that: A frequency converter (11) is fixedly arranged on the bottom side of the outer shell (1), and the frequency converter (11) is electrically connected to the negative pressure fan (10) via a wire. A control panel (3) is fixedly arranged on the surface of the outer shell (1), and the control panel (3) is electrically connected to the frequency converter (11) via a wire.

5. An air quality detector according to claim 1, characterized in that: The air outlet end face of the negative pressure fan (10) is fastened to the air exhaust inlet end face of the exhaust channel (4) by means of bolts, and a sealing gasket is provided between the air outlet end face of the negative pressure fan (10) and the air exhaust inlet end face of the exhaust channel (4).

6. An air quality detector according to claim 1, characterized in that: The porous filter element (701) comprises a porous metal outer cover and a dust filter element lining, wherein the dust filter element lining is attached to the inner wall surface of the porous metal outer cover.

7. An air quality detector according to claim 1, characterized in that: The gas detection sensor module (8) is located directly below the output port of the air inlet channel (6).

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