WO2023272818A1 - Self-starting purification device based on environmental changes - Google Patents

Abstract

A self-starting purification device based on environmental changes, the device at least comprising: a sensor unit (210), which at least comprises an air quality sensor (211) used for measuring gas concentration; a calculation unit (350), which can calculate and calibrate gas concentration according to testing data of the sensor unit (210); a central control unit (340), which is used to control the sensor unit (210) to test gas and/or control the calculation unit (350) to perform calibration and calculation; and a purification assembly, which at least comprises ultraviolet lamps (6) and a purification layer (7), wherein the starting of the purification assembly is controlled or driven by the central control unit (340), the control or driving is completed according to original testing data of the sensor unit (210) and by means of a combination with calibration and calculation numerical values of the calculation unit (350) and association with same, and the central control unit (340) at least can duly start the corresponding purification assembly and adjust the output characteristics of the purification assembly by means of determining the difference between a real-time gas concentration change value and a preset threshold value.

Description

A self-starting purification device based on environmental changes technical field

The invention relates to the technical field of air purification.

Background technique

CN112460729A discloses a photocatalyst air purification system based on ultraviolet LEDs, including a purification unit and a purification detection unit; the purification unit includes a base, a light source, a photosensitive layer, a photocatalytic net, and a transparent casing. The light source is installed on the base, a photosensitive layer is set under the light source, the photocatalytic net is located above the light source, and the transparent shell is covered above the photocatalytic net; the photosensitive layer is a ZrO2 coating; the production of the photocatalytic net includes the following steps: (1) take nano TiO2 white powder prepares 5% TiO2 Suspension solution; (2) apply it to air-drying on mesh cover; Detection part is used to detect the degree of purification in the transparent housing; Detection part includes sensor, amplifier, digital multimeter, DC power supply, and sensor is located at Inside the housing, the amplifier and the digital multimeter are located outside the housing; the sensor is electrically connected to the amplifier, the amplifier is electrically connected to the digital multimeter, and the amplifier and the digital multimeter are respectively connected to a DC power supply. The photocatalyst air purification device based on the UV-LED lamp of the present invention has good air purification effect.

CN110038431A discloses a photolysis purification treatment device for organic waste gas, which includes a purification box, an electric storage box, an inspection door and a control box. Legs are provided at the bottom of the purification box, and air inlets and air outlets are respectively opened on both sides of the purification box. The air inlet pipe is sealed and connected, and the air inlet end of the air inlet pipe is connected with the exhaust gas source. The first filter screen and the first gas detection probe are installed in the purification box at the air inlet, and the air outlet is sealed and connected with an air outlet pipe to purify There is a second filter screen and a second gas detection probe inside the box and at the air outlet. The purification box is equipped with an ozone ultraviolet lighting device, a photocatalyst filter, and a photocatalyst medium plate. A solar cell is installed on the trapezoidal bracket above the storage box. The storage box is equipped with a lithium battery pack and a solar controller. The inspection door is connected to the purification box through a snap lock at one end of the inspection door. The control box is equipped with a controller, a ballast, and a gas detector. The invention has the advantages of simple structure and strong practicability.

However, before the purification device in the prior art starts the corresponding purification components, it often needs the detection data of the gas concentration sensor to start in time and achieve the corresponding purification function, but the detection accuracy of most existing sensors is relatively low. Low, so starting the corresponding purification function based on low-precision detection data will lead to poor efficiency and effect of gas purification; in addition, even if a high-precision sensor is used, error calibration is still required during use. The method is to use standard gas or zero-grade air for calibration, but the unavoidable problem is that after the air sensor is used for a period of time, the current calibration value will be inconsistent with the previous initial calibration value due to gas pollution when the air sensor is turned on again. Therefore, when the calibration value with a large deviation is used for calibration, the subsequent detection data will drift greatly, that is, the error will continue to accumulate, and the purification device starts the corresponding purification function based on the high error detection result. It may lead to early or delayed start, which will not only lead to waste of resources such as electric energy, but also make the decomposition of harmful gases incomplete, resulting in low purification efficiency; more importantly, when the purification device is based on "wrong" gas When the detected concentration does not activate the corresponding purification function in a timely manner, the purification effect is limited due to the incomplete decomposition of the gas. At this time, the air environment in which people live is not good. Over time, this will cause unpredictable damage to the human body. Therefore, the prior art still has at least one or several aspects that need to be improved.

Contents of the invention

Aiming at the deficiencies of the prior art, the present invention provides a self-starting purification device based on environmental changes, aiming to solve at least one or more technical problems existing in the prior art.

In order to achieve the above object, the present invention provides a self-starting purification device based on environmental changes, at least including: a sensor unit that can be used for gas concentration detection at least; it is configured to be able to calculate the gas concentration based on the detection data of the sensor unit; A calibrated computing unit; a central control unit used to drive the sensor unit for gas concentration detection and/or the computing unit for calculation and calibration.

Preferably, the activation of the purification component is controlled or driven by the central control unit. The control or driving of the central control unit is completed by combining the calibration calculation value of the arithmetic unit and correlating with the original detection data of the sensor unit, and the central control unit can at least determine the difference between the real-time gas concentration change value and the preset threshold value. Timely change the power of the corresponding purification components by means of the difference between them. The start and stop of the purification component is completed by the central control unit based on the real-time concentration detection value and detection calibration value of the gas. The purification component starts only when the corresponding gas concentration in the air to be purified reaches the preset value, and during the process of air purification, the sensor unit and the calculation unit are always in working condition, so the purification process will continue to be based on the concentration of the gas. Change to adjust the output power of each purification component to change the purification capacity, and at the same time save electricity to a certain extent and avoid waste of resources; when the gas concentration is less than or equal to the standard value, the central control unit can terminate the purification operation. The entire purification operation is based on the perfect detection and calibration process formed by the sensor unit and the computing unit. The detection value of the drifted gas concentration will start the purification component for air purification treatment in a non-optimal time, and at the same time, according to the relatively accurate gas concentration value, the decomposition or treatment of harmful gases in the entire air purification process will be more thorough, so as to improve The efficiency and effect of the entire purification device, so that the current air environment is more conducive to people's work or life.

Preferably, the device further includes a mechanical part, and the mechanical part includes at least a main body unit. The main unit includes a detection and calibration unit, a computing unit and a central control unit, which are composed of a sensor unit and a gas storage chamber for standard gas storage.

Preferably, the sensor unit includes an air quality sensor and an environment sensor, wherein the environment sensor includes one or a combination of a temperature sensor, a humidity sensor, an air pressure sensor, and a wind speed sensor.

Preferably, when the central control unit drives the corresponding purification components to start, the air to be purified can passively enter its interior through the mechanical action of the main unit and contact the sensor unit to complete gas detection, and the standard gas used for calibration in the gas storage chamber is also Through the mechanical action of the main body unit, it passively enters its interior and contacts the sensor unit.

Preferably, the main body unit includes at least a first shell and a second shell that are movable relative to each other. At least one housing opening can be provided on the first housing and/or the second housing in such a manner that the first housing moves to introduce or exhaust external air to be cleaned from the main body unit therethrough.

Preferably, at least one gas storage opening is arranged on a side of the gas storage chamber opposite to the sensor unit, and the gas storage opening has at least a structural size matching the detection portion of the sensor unit, so that the sensor unit can at least be based on the first housing The movement of the body thus partially fits the gas storage opening.

Preferably, the caliber of the gas storage opening decreases continuously in view of the decreasing distance between points on any plane distributed along its axial direction and the sensor unit. At least part of the detection area of the sensor unit can enter the interior of the gas storage chamber through the gas storage opening when the first housing moves to a corresponding position.

Preferably, the opening and closing of the gas storage opening is completed based on the driving of the regulating unit, so that part of the detection area of the sensor unit can be in an open state at least part of the time when it enters the gas storage chamber. Part of the time is at least the time from when the detection area of the sensor unit enters to when it leaves the gas storage chamber.

Preferably, the regulating unit can drive the first housing and/or the second housing connected with the driving unit to move along the first direction or the second direction by changing the motion state of the driving unit. The regulating unit can adaptively adjust the degree of opening and closing of the air storage opening according to the change of the motion state of the drive unit and/or the relative displacement between the first housing and the second housing, so that the air storage opening can at least The openings are constantly changing as the sensor units approach and/or move away from each other.

Preferably, the arithmetic unit calibrates and fits the detection results according to the following formula:

Among them, Y is the compensation calibration value, α is the span calibration coefficient, k ₁ , k ₂ , k ₃ are the weights, T is the actual ambient temperature, T ₀ is the sensor temperature standard value, P is the actual atmospheric pressure, P ₀ is The sensor pressure standard value, R is the actual humidity, V is the actual wind speed, x is the actual detection value, and x ₀ is the gas standard value of the air storage chamber.

Preferably, at least one purification layer is installed in the purification device, and the purification layer can be installed between the ultraviolet lamp and the fan according to the method of contacting the air to be purified under the irradiation of the ultraviolet lamp to decompose harmful substances, and/or the purification layer can be installed according to the The air to be purified is installed in the through hole of the first mounting plate in a spiral flow manner. The invention adopts a photocatalyst net made of materials such as ultrafine anatase nano-TiO2, and its decomposition ability for VOC gases such as formaldehyde is much better than ordinary photocatalyst materials.

Preferably, the start-stop and power adjustment of the ultraviolet lamp are completed by the central control unit by calculating the difference between the real-time detection value and the standard threshold value according to the real-time detection value of the sensor unit. The ultraviolet lamp of the present invention is located at the rear end of the air inlet, which can prevent ultraviolet light from escaping, thereby reducing the harm to the human body caused by long-term use of commercially available ultraviolet sterilization equipment.

Preferably, at least one filter membrane is installed in the purification device, and the filter membrane is made of fiber membrane. The invention adopts the filter membrane made of nanofiber membrane to replace the traditional melt-blown cloth, which effectively avoids the problem that the filter performance of the melt-blown cloth is easily attenuated by humidity and time. The filter membrane can be installed in the first gas flow channel and/or the second gas flow channel in a manner substantially perpendicular and/or parallel to the gas flow direction, so that the filter membrane with selective permeability can contact the air to be purified At least part of the harmful substances will be retained.

Description of drawings

Fig. 1 is the preferred structural representation of a kind of purifying device provided by the present invention;

Fig. 2 is the preferred structural representation of mechanical part in the present invention;

Fig. 3 is a preferred schematic circuit diagram of a purification device according to the present invention.

List of reference signs

1: Box body 3: First gas flow channel 31: Filter membrane

4: Second gas flow channel 41: Screen mesh 5: First mounting plate

6: Ultraviolet lamp 7: Purification layer 8: Second mounting plate

9: Fan 10: Storage room 101: Conduit

102: Plate body 11: Steering wheel 100: Mechanical department

110: Main unit 111: First shell 112: Second shell

113: Shell opening 114: Opening valve 120: Drive unit

130: Control unit 200: Detection and calibration department 210: Sensor unit

211: Air quality sensor 212: Temperature sensor 213: Humidity sensor

214: Air pressure sensor 215: Wind speed sensor 220: Air storage chamber

221: Air Storage Opening 300: Function Department 301: Isolation Room

310: Display unit 320: Operation unit 330: Communication unit

340: Central control unit 350: Computing unit 360: Energy unit

detailed description

Detailed description will be given below in conjunction with accompanying drawings 1-3.

In the description of the present invention, it should be understood that the first direction refers to the direction along the mechanical part pointing to the outside, and the second direction refers to the direction along the outside pointing to the mechanical part.

The present invention provides a self-starting purification device based on environmental changes, which may include one of the following components: a box body 1, a mechanical part 100, a first gas flow channel 3, a filter membrane 31, a second gas flow channel 4, and a screen 41. The first installation board 5 , the ultraviolet lamp 6 , the purification layer 7 , the second installation board 8 , the fan 9 , the storage chamber 10 , the conduit 101 , the board body 102 and the steering wheel 11 .

According to a preferred embodiment shown in FIG. 1 , a substantially rectangular through groove is provided on one side surface of the substantially cubic or cylindrical box 1 along the first direction. The through groove can be arranged on at least one transverse surface of the box body 1 in a transverse or longitudinal manner. Preferably, the through slot may be disposed near the bottom of one side of the box body 1 along the first direction. Further, the through groove can be used as the first gas flow channel 3 for the air to be purified to enter.

According to a preferred embodiment shown in FIG. 1 , at least one screen 41 is installed in the first gas flow channel 3 . Further, the screen 41 is installed at a position close to the outer surface of the box body 1 . The screen 41 can preliminarily filter particles, dust and other substances contained in the air to be purified that enters the purification device for the first time, so as to reduce the particle dust content of the air to be purified. And the grid structure of the screen 41 can allow the air to be purified to flow into the device evenly.

According to a preferred embodiment shown in FIG. 1 , at least one filter membrane 31 is installed in the first gas flow channel 3 . Preferably, the filter membrane 31 can be installed inside the screen 41 . The filter membrane 31 is made of nanofiber membrane filter material, and the fiber of the nanofiber membrane filter material is about 1/10 of the melt-blown cloth, and the pore size is about 0.2-0.3 microns, which can replace the traditional melt-blown cloth filter material, thereby effectively avoiding It solves the problem that the filterability of melt blown cloth is susceptible to rapid attenuation by humidity and time. Before the air is released, the air to be purified is filtered through the nanofiber membrane, which can effectively filter bacteria, dust and other harmful substances to reduce the harm to the human body.

According to a preferred embodiment shown in FIG. 1 , a substantially rectangular through groove is also provided on the upper surface of the box body 1 along the second direction. Further, the through groove can be arranged on the upper surface of the box body 1 in a horizontal or vertical manner. Preferably, the through groove can be arranged at a side position on the upper surface of the box body 1 . Further, the through groove can be used as the second gas flow channel 4 for the outflow of purified air.

According to a preferred embodiment shown in FIG. 1 , at least one screen 41 and a filter membrane 31 are also installed in the second gas flow channel 4 . The screen 41 and the filter membrane 31 are installed sequentially from top to bottom. The purified air is treated by the filter membrane 31 and then filtered through the screen 41 to reduce the content of harmful dust particles again, thereby reducing the stimulation and damage to the human body. Preferably, the first gas flow channel 3 and the second gas flow channel 4 are provided with a screen 41 and a filter membrane 31, so that the air before purification and after purification are filtered at different levels for multiple times, so that The gas flowing out from the purification device is more pure and mild.

According to a preferred embodiment shown in FIG. 1 , a substantially rectangular or polygonal first mounting plate 5 is arranged horizontally or vertically inside the box body 1 . The first mounting plate 5 is installed at a position close to the first gas flow channel 3 . Preferably, the first mounting board 5 may be a circuit board containing electrical components. On the surface of the first mounting plate 5 , there are a plurality of substantially circular or rectangular through holes dislocated according to a certain gap. The air to be purified entering the device from the first gas flow channel 3 can enter the subsequent purification treatment area through the through hole on the first mounting plate 5 after passing through the screen 41 and the filter membrane 31 to filter and remove dust. Preferably, the through holes are arranged on the first mounting plate 5 in an equal-space manner, so as to change the pre-treated air to be purified into a uniform airflow.

According to a preferred embodiment shown in Figures 1 and 2, the device further includes at least a mechanical part 100, the mechanical part 100 can be installed on the surface of the first mounting plate 5, or installed in the box 1 without affecting the gas entering its interior Any position where the detection and calibration is completed, for example, the mechanical part 100 can also be placed in the first gas flow channel 3 where the gas flows. Specifically, the mechanical part 100 includes a main body unit 110 capable of carrying and/or accommodating the detection and calibration part 200 and the functional part 300 . FIG. 2 is a schematic structural diagram of a gas detection calibration unit in a preferred embodiment, and FIG. 3 is a circuit connection diagram of a gas detection calibration unit in a preferred embodiment.

According to a preferred embodiment shown in FIG. 2 , the main body unit 110 of the mechanical part 100 may include a first housing 111 and a second housing 112 , and the first housing 111 and the second housing 112 can form the body unit 110 opposite to each other. A sealed inner space, wherein the relative displacement between the first housing 111 and the second housing 112 is possible, so that the size of the inner space of the main unit 110 can be adjusted. Further, the first housing 111 is relatively movable, and the second housing 112 is relatively fixed, and a driving unit 120 is connected between the first housing 111 and the second housing 112, so that the driving unit 120 can drive The first housing 111 moves along the driving direction of the driving unit 120 , wherein the driving unit 120 may be any electromechanical element that can cause the first housing 111 to move, such as an actuator. The driving unit 120 can move along the first direction to drive the first housing 111 to move synchronously along the first direction, so that the distance between the first housing 111 and the second housing 112 increases, so that the interior of the main unit 110 The space increases; the driving unit 120 can move along the second direction to drive the first housing 111 to move synchronously along the second direction, so that the distance between the first housing 111 and the second housing 112 decreases, so that the main body The interior space of the unit 110 is reduced.

According to a preferred embodiment shown in FIG. 2 , between the first housing 111 and the second housing 112 , an elastic reset unit (not shown) can be arranged in the same direction as the drive unit 120 to When the first housing 111 is driven by the drive unit 120 to move in the first direction or the second direction, the reset unit can be compressed or stretched, so that the reset unit undergoes elastic deformation, and the driving force is removed from the drive unit 120 Afterwards, the first housing 111 is reset with the help of the elastic force of the reset unit, so that while saving the power consumption of the drive unit 120, the energy generated during the movement of the second housing 112 can be recovered by the recovery unit.

Preferably, the second housing 112 can be made of rigid materials, and the first housing 111 can be made of flexible materials or rigid materials according to different usage scenarios, wherein the rigid materials can be metal plates, plastic plates or glass plates, etc., when When both the first shell 111 and the second shell 112 are made of rigid materials, the area between the first shell 111 and the second shell 112 that may appear with the movement of the first shell 111 is made of materials including but not The connection of sealing components limited to folded tubes or rubber seals ensures the relative airtightness of the internal space of the main body unit 110 .

According to a preferred embodiment shown in FIG. 2 , at least one side of the main unit 110 can be provided with a housing opening 113 , wherein the housing opening 113 can be opened in the first housing 111 and/or the second housing 112 superior. Optionally, the housing opening 113 may have a structural size determined according to the installation location and detection requirements, wherein the housing opening 113 may be in a circular, rectangular or other structural shape. Preferably, the housing opening 113 is opened on the first housing 111, and the housing opening 113 can be provided with an opening valve 114 to control the opening and closing and the opening degree of the housing opening 113 through the opening valve 114, wherein, according to the detection It is required to connect a filter assembly at one end of the housing opening 113, so that substances that are not expected to intrude into the internal space of the main body unit 110, especially particles exceeding a predetermined size, can be blocked inside the main body unit 110 through the filter assembly. outside of space.

According to a preferred embodiment shown in FIG. 2 , when only one housing opening 113 is provided, when the first housing 111 moves along the first direction driven by the drive unit 120 , the internal space of the main unit 110 increases. When the ambient air pressure in the external space of the main unit 110 is higher than the air pressure in the internal space of the main unit 110, the external air can enter the internal space of the main unit 110 through the opened shell opening 113; the first shell When the body 111 is driven by the drive unit 120 to move in the second direction, the internal space of the main unit 110 decreases and the air pressure thereof increases, and the ambient air pressure in the external space of the main unit 110 is lower than the air pressure in the internal space of the main unit 110 , the internal air can flow to the outer space of the main unit 110 through the opened housing opening 113 .

According to a preferred embodiment shown in Figure 2, when at least two casing openings 113 are provided, one of the casing openings 113 can be used as a gas inlet, the other casing opening 113 can be used as a gas outlet, and the other casing openings 113 can be used as a gas outlet. The housing opening 113 can be flexibly changed according to the detection requirements, wherein, when the first housing 111 moves along the first direction driven by the driving unit 120, the gas inlet can be opened and the gas outlet can be closed, and the internal space of the main unit 110 increases. When the ambient air pressure in the external space of the main unit 110 is higher than the air pressure in the internal space of the main unit 110, the external air can enter the internal space of the main unit 110 through the open gas inlet; the first casing 111 When moving in the second direction driven by the driving unit 120, the gas outlet can be opened and the gas inlet can be closed, the internal space of the main unit 110 is reduced and the air pressure thereof is increased, and the ambient air pressure in the external space of the main unit 110 is lower than that of the main body. When the air pressure in the internal space of the unit 110 is low, the internal gas can flow to the external space of the main unit 110 through the open gas outlet, so that the gas is in a one-way flow state in the internal space of the main unit 110, so that the gas can be better The flow into/out of the main body unit 110 can be avoided, thereby avoiding the occurrence of congestion caused by the setting of a single housing opening 113 .

According to a preferred embodiment shown in FIG. 2 , a detection and calibration unit 200 is provided in the inner space of the main body unit 110, wherein the detection and calibration unit 200 may include a sensor unit 210 for gas detection and a standard gas for storing The gas storage chamber 220. The sensor unit 210 includes at least an air quality sensor 211 for detecting a VOC value in gas. When the first housing 111 is driven by the drive unit 120 to move in the first direction, external air is sucked from the housing opening 113 into the inner space of the main unit 110 and contacts the sensor probe of the sensor unit 210 to complete gas detection; When the casing 111 is driven by the driving unit 120 to move in the second direction, the internal gas is discharged from the casing opening 113 to the space outside the main unit 110 and gas detection is stopped.

According to a preferred embodiment shown in FIG. 2 , the sensor unit 210 can be connected with a control unit 130, and the control unit 130 can be connected with the drive unit 120 to control the direction of motion of the drive unit 120. The motion state controls the opening and closing of the sensor unit 210, so that the sensor unit 210 can only be opened during the detection process and when other people need to open it, so as to avoid the long-term opening of the sensor unit 210 to cause wasteful work consumption and loss of the sensor unit 210 . Further, the sensor unit 210 may further include several environmental sensors, such as a temperature sensor 212 , a humidity sensor 213 , an air pressure sensor 214 and/or a wind speed sensor 215 . Different environmental sensors can monitor the environment where the gas to be measured is located, so that the influence of environmental factors can be eliminated when calculating the detection result, thereby realizing the calibration of the detection result.

According to a preferred embodiment shown in FIG. 2 , the standard gas stored in the gas storage chamber 220 can be used to calibrate the air quality sensor 211, wherein one side of the gas storage chamber 220 is provided with a Space and the gas storage opening 221 of the internal space of the main body unit 110 , the sensor unit 210 and the gas storage chamber 220 can be installed in a manner that the sensor probe and the gas storage chamber 220 opening face each other, so that the sensor probe can be opposite to the gas storage chamber 220 opening. When the gas storage chamber 220 opens the gas storage opening 221 , the standard gas stored in the gas storage chamber 220 can overflow from the gas storage opening 221 and contact the sensor probe, thereby completing the detection of the standard gas.

Preferably, one of the unit parts of the sensor unit 210 and the gas storage chamber 220 can be installed on the first housing 111, and the other unit part can be installed on the second housing 112, so that the first housing 111 can be mounted on the second housing 112. When the driving unit 120 moves, it can drive the air storage chamber 220 or the sensor unit 210 to move synchronously.

Further, in order to prevent the sensor unit 210 from being frequently vibrated as the first housing 111 moves back and forth when the sensor unit 210 is disposed on the first housing 111, the internal parts of the sensor unit 210 will slip or fall off, etc. If the detection effect and/or service life are affected, the gas storage chamber 220 can be arranged on the first casing 111, and the sensor unit 210 can be arranged on the second casing 112. While protecting the sensor unit 210, it is also convenient for storage. When the standard gas in the gas chamber 220 is consumed to a threshold value, the gas storage chamber 220 is replenished or replaced.

According to a preferred embodiment shown in FIG. 2 , the air storage chamber 220 provided on the first housing 111 can move along the second direction with the first housing 111 driven by the drive unit 120 , that is, the air storage chamber 220 moves toward the direction close to the sensor unit 210, at this time the internal space of the main unit 110 decreases, and the air pressure increases, so that the internal gas overflows from the housing opening 113 to the external space of the main unit 110, and then opens the gas storage opening 221 to make the storage The internal and external spaces of the gas chamber 220 are connected, and the standard gas stored in the gas storage chamber 220 can flow to the internal space of the main unit 110 through the gas storage opening 221 and contact with the sensor probe of the sensor unit 210, and the suddenly opened gas storage opening 221 can make When the standard gas overflows, it can generate an instantaneous high-speed airflow and rush to the surface of the sensor probe to achieve the purpose of cleaning the surface of the sensor probe, thereby preventing tiny particles from adhering to the surface of the sensor probe and affecting the detection accuracy, and at the same time protecting the gas storage chamber The standard gas in 220 is not polluted.

According to a preferred embodiment shown in Figure 2, the detection area can enter the inside of the gas storage chamber 220 for detection so that only a small amount of standard gas overflows from the gas storage opening 221, compared to conventional Standard gas detection can greatly reduce the consumption of standard gas on the premise of ensuring that the standard gas is not polluted, and prolong the service life of the gas storage chamber 220, so as to avoid frequent replenishment or replacement of the gas storage chamber. The optimal opening and closing time of the gas storage opening 221 can be adjusted by the regulating unit 130 to control the standard gas overflow. The relative positional relationship between the detection areas is used to obtain the basic opening and closing time of the gas storage opening 221 to ensure that the gas storage opening 221 is in an open state when the detection area is in the gas storage opening 221 and the detection area can just enter and exit the gas storage opening 221 . Further, on the basis of the basic opening and closing time, the control unit 130 can appropriately extend the basic opening and closing time to the optimal opening and closing time according to factors such as the internal and external pressure difference of the gas storage chamber 220 and the standard gas margin, so that sufficient But not too much standard gas overflows from the gas storage opening 221 to achieve the purpose of cleaning the detection area.

Preferably, the gas storage opening 221 can be set as a tapered opening, so as to increase the pressure of the standard gas when it overflows from the gas storage opening 221, thereby improving the cleaning effect. Further, a turntable carrying the sensor unit 210 can be set on the second housing 112, and the turntable can be driven under the control of the control unit 130, so that the control unit 130 can synchronously start the turntable to drive the sensor unit when the air storage opening 221 is opened. 210 rotates slightly, so that the standard gas sprayed on the surface of the detection area can purge the impurities attached to the detection area, especially the surface of the sensor probe, and throw out the impurities under the action of centrifugal force, while the rotation of the sensor unit 210 It also facilitates the docking of the detection area and the gas storage opening 221, wherein the turntable can also be provided with a storage tank for collecting impurities.

Preferably, the sensor unit 210 is set as a detection area in at least a part of the area including the sensor probe, and a snap-fit assembly is provided on the outer edge of the detection area, wherein the snap-fit assembly can match the structure of the gas storage opening 221, so that the gas storage chamber 220 is When moving along the second direction to the second maximum offset, the sensor unit 210 can be detachably connected to the gas storage chamber 220 by connecting the snap-fit component to the gas storage opening 221, so that the detection area of the sensor unit 210 can be Enter the inner space of the gas storage chamber 220 and detect the standard gas in the gas storage chamber 220 to obtain the standard value of the standard gas. Optionally, the air storage opening 221 can be designed in a circular, rectangular or other various shapes, but its structural size needs to be adjusted accordingly according to the structural size of the engaging component. Preferably, the gas storage opening 221 is designed as a circular structure, and a sealing ring can be provided along the circumference of the gas storage opening 221 and/or the engaging assembly, so that the gas storage chamber 220 and the sensor unit 210 can be sealed and connected when docked.

Further, the gas storage opening 221 can be designed as a double-layer opening, and the gas storage chamber 220 with double-layer openings can separately control the opening and closing of the two openings, so as to protect the standard gas in the gas storage chamber 220 from being pollute.

According to a preferred embodiment, the first housing 111 can move between the first maximum displacement and the second maximum displacement, and the first housing 111 is located between the first maximum displacement and the second maximum displacement in a natural state. Between the second maximum offset, so that the first casing 111 can move between the first maximum offset and the second maximum offset along the first direction or the second direction driven by the driving unit 120 .

According to a preferred embodiment, when the first housing 111 moves from the natural state to the first maximum displacement along the first direction, the air storage chamber 220 gradually moves away from the sensor unit 210, and the internal space of the main body unit 110 gradually increases. More external air is gradually sucked into the inner space of the main body unit 110 and comes into contact with the sensor unit 210 for detection, if both the gas inlet and the gas outlet are provided, the opening valve 114 of the gas inlet is opened and the opening valve of the gas outlet is closed 114; when the first housing 111 has reached the first maximum offset, the driving unit 120 and/or the reset unit can drive the first housing 111 to move in the second direction, so as to reduce the internal space of the main unit 110 and The internal gas is discharged from the opening 113 of the housing. If the gas inlet and the gas outlet are provided at the same time, the opening valve 114 of the gas outlet is opened and the opening valve 114 of the gas inlet is closed. During this process, the sensor unit 210 can detect according to actual needs or not detected.

Preferably, the sensor unit 210 is switched to the closed state when the first housing 111 has the first maximum offset and moves to the natural state, so as to reduce the opening time of the sensor unit 210 when effective gas cannot be detected, thereby saving power Consumption, prolonging the service life of the sensor unit 210 and improving the detection efficiency of a single detection.

According to a preferred embodiment, when the first casing 111 moves from the natural state along the second direction to the second maximum offset, the air storage chamber 220 gradually approaches the sensor unit 210, and the internal space of the main body unit 110 gradually decreases. A lot of internal gas is gradually discharged from the internal space of the main body unit 110, the gas storage opening 221 of the gas storage chamber 220 is opened and the sensor probe of the sensor unit 210 can be cleaned; when the first housing 111 has reached the second maximum deviation When measuring, the gas storage chamber 220 is docked with the sensor unit 210 so that the detection area of the sensor unit 210 can enter the inner space of the gas storage chamber 220, and the standard gas is detected in the gas storage chamber 220; when the sensor unit 210 detects the standard gas After the gas detection is completed, the first housing 111 is driven by the driving unit 120 and/or the reset unit to move from the second maximum offset to the natural state along the first direction, and completely moves out of the gas storage chamber in the detection area of the sensor unit 210 After 220, the gas storage opening 221 is closed. Further, during the back-and-forth process of detecting the standard gas, if a gas inlet and a gas outlet are provided at the same time, the opening valve 114 of the gas outlet can be opened and the opening valve 114 of the gas inlet can be closed all the way.

According to a preferred embodiment shown in FIG. 2 , the main unit 110 also carries and/or accommodates a functional part 300, wherein the functional part 300 may include a display unit 310, an operating unit 320, a communication unit 330, a central control unit 340, One or more of the computing unit 350 and the energy unit 360 .

Preferably, the functional part 300 is located in the isolation chamber 301 independently provided in the internal space of the main body unit 110, so as to avoid the influence of some specific substances in the gas to be measured on the components of the functional part 300.

Preferably, the display unit 310 that can be used to display detection data and/or detection results may be any display, such as an OLED display, a TFT display, or an LCD display. The operation unit 320 may be a component capable of inputting user operation instructions in any manner, such as a keyboard, buttons, touch screen or microphone.

Preferably, the display unit 310 and the operation unit 320 are arranged outside the purification device and are electrically connected with other units.

Preferably, the communication unit 330 is at least able to exchange information with the user terminal in a wired and/or wireless manner, so that the detection data and/or detection results can be transmitted to the user terminal for viewing, analysis, etc. by the user. The user can input operation instructions to the calibration system through the user terminal, wherein the communication unit 330 is preferably wireless communication, such as GSM, UMTS, LTE, WLAN, Bluetooth, Zigbee, infrared or similar technologies.

Preferably, the central control unit 340 can regulate each functional unit in the functional part 300 according to the user's preset program and/or the operation instruction input by the user in real time, and can also control the mechanical part 100 and the detection and calibration part 200 at the same time. Transmission of instructions to enable calibration operations to run properly. The arithmetic unit 350 can receive the detection data from the sensor unit 210, and calculate the detection result according to the preset formula. At the same time, the detection result can be calibrated according to the standard value of the standard gas and the environmental influence factors, so as to obtain a higher accuracy. High compensation calibration value. The purpose of the energy unit 360 is to provide energy for each electric device in the purification device, wherein the energy unit 360 can be various types of batteries that can provide electric energy.

According to a preferred implementation manner, the computing unit 350 can put the following formula in order to realize the calibration of the detection result:

Among them, Y is the compensation calibration value, α is the span calibration coefficient, k ₁ , k ₂ , k ₃ are the weights, T is the actual ambient temperature, T ₀ is the sensor temperature standard value, P is the actual atmospheric pressure, P ₀ is The sensor pressure standard value, R is the actual humidity, V is the actual wind speed, x is the actual detection value, and x ₀ is the standard value of 220 gas in the gas storage chamber.

Further, when the air quality sensor 211 is used to detect the VOC value in the air, x is the actual VOC detection value, and x ₀ is the gas VOC standard value of the gas storage chamber 220 . The temperature sensor 212, the humidity sensor 213, the air pressure sensor 214 and the wind speed sensor 215 can respectively detect the actual temperature, humidity, air pressure and wind speed, and the air quality sensor 211 can measure the gas VOC standard value of the air storage room 220 through the air storage room 220, so as to Each influencing parameter used to calibrate the live VOC detection value is obtained, thereby completing the fitting calibration.

According to a preferred embodiment, manual calibration can also be used, the standard gas pump is directly connected to the housing opening 113, and the gas inlet is closed to open the gas outlet, so that the standard gas can be directly introduced into the sensor unit 210 through the standard gas pump, so as to This avoids the situation that standard gas detection cannot be performed when the standard gas stored in the gas storage chamber 220 is polluted or the pressure is lower than a preset threshold. At the same time, when the standard gas in the gas storage chamber 220 is polluted or the air pressure is lower than a preset threshold, the gas storage chamber 220 can be replenished and/or replaced.

According to a preferred embodiment, before starting the corresponding purification components in a timely manner, gas detection and calibration are required, and the specific methods include:

S0, turn on the energy unit 360, so that the energy unit 360 can supply power to the electrical equipment in the calibration system, and connect the user terminal to the communication unit 330;

S1. The central control unit 340 can drive the mechanical part 100 and the detection and calibration part 200 to perform standard gas detection according to the control signal input by the operation unit 320 and/or the communication unit 330 and/or the preset program, wherein the drive unit 120 drives the first The casing 111 moves along the second direction, so that the gas storage chamber 220 arranged on the first casing 111 is docked with the sensor unit 210, so that the detection area detects the standard gas in the inner space of the gas storage chamber 220, and the detection is completed Afterwards, the first shell 111 returns to the natural state;

S2. The central control unit 340 can drive the mechanical part 100 and the detection and calibration part 200 to detect the gas to be tested according to the control signal input by the operation unit 320 and/or the communication unit 330 and/or the preset program, wherein the drive unit 120 drives the first A housing 111 moves along the first direction, so that the internal space of the main unit 110 increases, so that the gas to be measured in the external space of the main unit 110 is sucked into the internal space of the main unit 110 and contacts the sensor unit 210 to complete the measurement of the gas to be measured. And/or environmental impact factor detection, after the detection is completed, the first housing 111 returns to the natural state;

S3. The central control unit 340 can drive the computing unit 350 that receives the detection data to process data according to the control signal input by the operation unit 320 and/or the communication unit 330 and/or the preset program, and perform data processing according to the standard value of the standard gas detection and the environment The detection value of the influencing factors, and the calibration of the detection results is completed;

S4, the central control unit 340 can drive the communication unit 330 to send the detection data and/or detection results to the user terminal and/or drive the display unit according to the control signal input by the operation unit 320 and/or the communication unit 330 and/or the preset program 310 displaying the detection data and/or detection results on the screen;

S5. Disconnect the user terminal from the communication unit 330, and turn off the energy unit 360.

According to a preferred embodiment shown in FIG. 1 , a plurality of ultraviolet lamps 6 are installed on the surface of the first mounting plate 5 approximately at a position outside the circumference of the through hole. Further, the ultraviolet lamp 6 can be installed on both sides of the first installation plate 5 . Preferably, the ultraviolet lamp 6 can be electrically connected to the energy unit 360 in the mechanical part 100, and the central control unit 340 can start the ultraviolet lamp 6 in good time based on the gas concentration value collected by the sensor unit 210, and based on the sensor unit 210 The value is detected in real time, and the difference between it and the standard threshold is calculated to change its brightness to adjust the purification intensity. After the air to be purified flows in from the first gas flow channel 3, the ultraviolet lamp 6 can sterilize the air to be purified, that is, destroy the DNA of microorganisms contained in the air to be purified, making it lose the function of reproduction and self-replication.

Preferably, plane mirrors can be installed on the upper and lower inner walls of the box body 1 or the inner walls along the gas flow direction. Because the ultraviolet light 6 can dissipate ultraviolet light, when the air to be purified is irradiated by the ultraviolet lamp 6 for disinfection, the ultraviolet light scattered to the edge can be re-gathered after being reflected by the plane mirror, so that as much ultraviolet light as possible It can be irradiated on the purification area, thereby increasing the coverage area of the air to be purified by the ultraviolet light, and finally improving the efficiency and effect of the ultraviolet lamp 6 for sterilization and disinfection. Preferably, when the gas concentration reaches a certain value, the central control unit 340 controls the operation of the ultraviolet lamp 6 to purify the gas, and when the gas concentration is less than a certain value, turns off the ultraviolet lamp 6 to stop the air purification.

According to a preferred embodiment shown in FIG. 1 , a second mounting plate 8 is arranged horizontally or vertically inside the box body 1 . A rectangular hollow slot is provided at approximately the middle of the second mounting plate 8 . Further, a fan 9 is mounted on the second mounting plate 8 through a hollow slot in the middle thereof. Preferably, the fan 9 can be electrically connected to the energy unit 360 in the mechanical part 100, and the central control unit 340 can adjust the start and stop of the fan 9 based on the gas concentration value collected by the sensor unit 210 and detect changes in real time based on the gas concentration value, calculate the difference between it and the standard threshold to change its speed. The fan 9 has substantially arc-shaped blades. When the air to be purified flows into the purification device through the first gas flow channel 3, the blades of the fan 9 have an angle with the axial direction and the radial direction. When rotating, there is a mechanical force "wedging" into the air molecule group, pushing the air to The concave surface of the blade moves in the normal direction, and because the blade has an arc shape, the propelled wind flow has a vortex, making the wind flow more powerful. When the gas flows through the fan 9 , the fan 9 sends the uniform air flow to the second gas flow channel 4 , and performs multiple filtering processes at the second gas flow channel 4 .

According to a preferred embodiment shown in FIG. 1 , a purification layer 7 is arranged horizontally or vertically inside the box body 1 . Further, the purification layer 7 is arranged between the fan 9 and the first installation board 5 . Preferably, the purification layer 7 is a roughly spongy photocatalyst net made of photocatalyst materials such as ultrafine anatase nano- _TiO2 with a particle diameter below 50nm, which can decompose the air rapidly under the irradiation of the ultraviolet lamp 6. Harmful gases such as formaldehyde are decomposed into H ₂ O and CO ₂ . The specific crystalline photocatalyst network made by using ultra-fine particle size photocatalyst material through doping technology has a much better ability to decompose formaldehyde and other VOC gases than ordinary photocatalyst materials.

According to a preferred embodiment, the purification layer 7 can also be several photocatalyst nets installed in the through holes on the surface of the first installation board 5 . Preferably, the photocatalyst net located in the through hole on the surface of the first mounting plate 5 may have a substantially double helix structure, and the photocatalyst net in the double helix structure is arranged in the through hole parallel to the gas flow direction. Specifically, when the gas passes through the photocatalyst net, it flows in a spiral manner in the spiral channel, which is conducive to increasing the contact area between the gas and the photocatalyst net and prolonging its contact time, thereby improving the cleanliness of the purification layer 7. The decomposition rate and effect of VOC gases such as formaldehyde. The present invention adopts the combination of ultraviolet light, photocatalyst and nanofiber membrane filter material, and its efficacy in terms of formaldehyde removal, bacteria removal and dust prevention is far greater than that of the traditional fresh air system with a single melt-blown cloth.

According to a preferred embodiment shown in FIG. 1 , a substantially rectangular slot can be provided on the surface of the box body 1 , and a storage chamber 10 for holding water is detachably installed in the rectangular slot. Preferably, the storage chamber 10 is installed on the inner wall of the box on the side where the first gas flow channel 3 is located. Further, an end of the storage chamber 10 close to the first gas flow channel 3 is connected with a conduit 101 . The other end of the conduit 101 is connected to the wall of the first gas flow channel 3 . On the other hand, a plate 102 is mounted on the inner wall of the first gas flow channel 3 , and one side of the plate 102 is connected to the conduit 101 . Preferably, the plate body 102 may be a ceramic sheet with several fine through holes. While the aqueous solution in the storage chamber 10 is manually controlled to flow to the plate body 102 through the conduit 102 , the air to be purified flowing in from the first gas flow channel 3 will be absorbed by the water vapor on the surface of the plate body 102 . When the air to be purified with water vapor contacts the purification layer 7 made of photocatalyst material, hydrogen and oxygen free radicals will be generated.

According to a preferred embodiment shown in FIG. 1 , at least one steering wheel 11 is respectively provided at both ends of the bottom of the box body 1 along the second direction. Preferably, the steering wheel 11 can be electrically connected to the power supply unit in the aforementioned control module 2 . Preferably, the processing unit 201 can drive the movement of the steering wheel 11 through the power supply unit based on the harmful gas collected by the detection unit, so as to drive the purification device to purify the gas in the operating environment in a moving manner.

Claims (15)

1. A self-starting purification device based on environmental changes, characterized in that it at least includes:

   a sensor unit (210) capable of at least gas concentration detection,

   An arithmetic unit (350) configured to be able to calculate and calibrate the gas concentration based on the detection data of the sensor unit (210),

   A central control unit (310) for driving the sensor unit (210) to perform gas concentration detection and/or the calculation unit (350) for calculation and calibration,

   and a purification component for air purification, and the activation of the purification component is controlled or driven by the central control unit (310), wherein,

   The control or driving is completed in a manner that the original detection data of the sensor unit (210) is combined with the calibration calculation value of the arithmetic unit (350) and associated with it, and the central control unit (310) can at least pass The method of judging the difference between the real-time gas concentration change value and the preset threshold value is used to timely start the corresponding purification component and adjust its output characteristics.
2. A calibration device for a purification device, characterized in that it at least includes:

   A mechanical part (100) disposed in the purification device, which at least includes a main body unit (110),

   A detection and calibration part (200) disposed in the main body unit (110), which includes a sensor unit (210) capable of at least gas concentration detection,

   in,

   When the calibration device is working, the air to be purified can passively contact the sensor unit (210) inside it through the mechanical action of the main unit (110) to complete gas detection, and the standard gas used for calibration is also passed through the main unit ( 110) of mechanical action thereby passively entering its interior in contact with the sensor unit (210).
3. Purification device according to claim 1, characterized in that, said purification assembly comprises at least a purification layer (7) and an ultraviolet lamp (6), and at least one purification layer (7) can It is installed in the box (1) in a manner of decomposing harmful substances in contact with the air to be purified under irradiation, wherein,

   The start-stop and power adjustment of the ultraviolet lamp (6) are completed by the central control unit (310) based on the real-time detection value of the sensor unit (210) and calculating the difference between the real-time detection value and the standard threshold of.
4. Purification device according to claim 1, is characterized in that, at least one deck filter membrane (31) made of fiber membrane is installed inside it, wherein,

   The filter membrane (31) is installed in the first gas flow channel (3) and/or the second gas flow channel (4) opened on the surface of the purification device, so that the filter with selective permeability The membrane (31) is capable of retaining at least a part of harmful substances when it contacts the air to be purified.
5. The purification device according to claim 4, characterized in that a storage chamber (10) is arranged inside it, and the storage chamber (10) is connected to the first gas flow channel (3) through a conduit (101), in,

   One end of the conduit (101) located in the first gas flow channel (3) is connected to a plate body (102), and the plate body (102) has a porous structure, so that the water vapor in the conduit (101) After entering the first gas flow channel (3) through the plate body (102), it can contact and react with the air to be purified.
6. The calibration device according to claim 2, characterized in that, the main body unit (110) at least includes a first housing (111) and a second housing (112) that are movable relative to each other, wherein,

   At least one housing opening (113) can be provided in the first housing in such a manner that external air to be purified is introduced into or exhausted from the main body unit (110) therethrough based on the movement of the first housing (111). (111) and/or the second housing (112).
7. The calibration device according to claim 2 or 6, characterized in that, a gas storage chamber (220) is also provided in the detection and calibration part (200), and at least one gas storage opening (221) is provided in the gas storage One side of the chamber (220) opposite to the sensor unit (210), so that the sensor unit (210) can be at least partially attached to the gas storage opening based on the movement of the first housing (111) ( 221).
8. The calibration device according to claim 7, characterized in that, when the first housing (111) moves to a corresponding position, part of the detection area of the sensor unit (210) can enter the gas storage opening (221). Inside the air storage chamber (220),

   Wherein, the opening and closing of the gas storage opening (221) is completed based on the driving of the regulation unit (130), so that the part of the detection area of the sensor unit (210) can enter the gas storage chamber (220) is on at least part of the time, where,

   Part of the time at least refers to the time from when the detection area of the sensor unit (210) enters to when it leaves the gas storage chamber (220).
9. The calibration device according to claim 8, characterized in that, the regulating unit (130) can drive the first housing (111) and/or the second housing by changing the motion state of the driving unit (120) (112) moves, and adjusts the gas storage opening based on changes in the motion state of the drive unit (120) and/or relative displacement changes between the first housing (111) and the second housing (112) (221) degree of opening and closing.
10. The calibration device according to claim 6, characterized in that an opening valve (114) for adjusting the gas flow is correspondingly provided at the opening (113) of the housing, and the regulating unit ( 130) The opening and closing of the opening valve (114) can be adjusted based on the movement condition of the driving unit (120).
11. The purification device according to claim 1, characterized in that, the sensor unit (210) comprises an air quality sensor (211) and an environment sensor,

    in,

    The environmental sensor includes one or a combination of a temperature sensor (212), a humidity sensor (213), an air pressure sensor (214) and a wind speed sensor (215).
12. The calibration device according to claim 6, characterized in that, a reset unit is arranged between the first housing (111) and the second housing (112), and the reset unit can drive the first housing when the driving unit (120) A housing (111) is elastically deformed while moving in the first direction or the second direction, so that the first housing (111) can be based on the reset unit after the driving unit (120) removes the driving force. Reset by elastic force.
13. The calibration device according to claim 7, characterized in that, the caliber of the gas storage opening (221) is based on the reduction of the distance between a point on any plane distributed along its axial direction and the sensor unit (210). small and decreasing.
14. Purification device according to claim 1, characterized in that the computing unit (350) calibrates and fits the detection results according to the following formula:

    

    Among them, Y is the compensation calibration value, α is the span calibration coefficient, k ₁ , k ₂ , k ₃ are the weights, T is the actual ambient temperature, T ₀ is the sensor temperature standard value, P is the actual atmospheric pressure, P ₀ is The sensor pressure standard value, R is the actual humidity, V is the actual wind speed, x is the actual detection value, and x ₀ is the gas standard value of the air storage chamber.
15. The calibration device according to claim 2, characterized in that, the main body unit (110) is also provided with a functional part (300),

    Wherein, the functional part (300) includes one of a display unit (310), an operation unit (320), a communication unit (330), a central control unit (340), an operation unit (350) and an energy unit (360) or more.

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