Intelligent Radon Daughter Air Purifier

Abstract

Intelligent radon daughter nuclide air purifier, comprising a box body, a fan, a purification filter element section, an air quality monitoring sensor, an intelligent touch display screen, an electronic controller, an air inlet, an air outlet, and a coarse metal filter screen; the air inlet is arranged on the left and right sides at the bottom of the box body; the fan is arranged in the upper middle part of the box body; the air outlet is arranged at the top of the box body; the purification filter element section is installed in the lower middle part of the box body; the air quality monitoring sensor is installed in the upper part of the box body; the coarse metal filter screen is fixedly installed on the inner wall of the box body adjacent to the lower part of the purification filter element section; the intelligent touch display screen is installed in the upper middle part of the front of the box body; the electronic controller is electrically connected to the fan, the purification filter element section, the air quality monitoring sensor and the intelligent display screen respectively. It can efficiently handle the radon daughter nuclide radiation problem in high radon pollution areas, and can effectively monitor the indoor radon daughter nuclide concentration in real time, providing reference and help for users to select the fan air volume size and start and stop the machine.

Description

Technical Field

[0001] The present invention relates to the field of air purification devices, and particularly to an intelligent radon daughter removing air purifier. Background Art

[0002] Radon daughters are short-lived daughters generated by the radioactive decay of the natural radioactive gas radon 222 Rn. Radon 222 is generated by the radioactive decay of Rn 218 Po daughters, 218 and Po daughters continue to decay successively to generate 214 Pb, 214 Bi, 214 Po and 210 Pb and other daughters. Since 210 the half-life of Pb is as long as 22.3 a, it can basically be regarded as a stable daughter nuclide, and 210 the daughters of Pb and those after it can hardly reach a measurable radioactive concentration in the air. Therefore, the so-called radon daughters specifically refer to 218 Po, 214 Pb, 214 Bi and 214 Po, these four types of short-lived daughters.

[0003] These short-lived radon daughters from the decay of the parent body to the decay daughters surrounded by polar substances in the air to form clusters are collectively referred to as unbound radon daughters, with a particle size usually between 0.5 nm and 5 nm, having extremely strong diffusion and adsorption capabilities, and being easy to collide and adsorb with aerosol particles in the air to form bound radon daughters, with a particle size usually between 50 nm and 2000 nm. Most of the radon daughters exist in radioactive aerosols formed by binding with fine particles in the air with a particle size less than 2 μm, and the proportion of unbound radon daughters is very low, usually between 5% and 13%.

[0004] Radon 222Rn is an inert gas. After being inhaled into the human body, 95% of it will be exhaled with the exhaled air, and the radiation damage to the human body can be ignored. However, the diffusivity and adhesiveness of radon daughters are extremely strong. After being inhaled into the human body, they are very likely to be intercepted by the respiratory tract and continuously deposited on the tracheal wall and alveolar surface of the respiratory tract in the form of metal particles. At the same time, the α particles generated by the decay of radon daughters have very high energy, which can ionize the irradiated tissues or cells, and at the same time damage or change the molecular structure of DNA in the cells, inhibit its replication function, cause abnormal cell division, and ultimately induce lung cancer. In fact, more than 95% of the annual average effective dose of indoor radiation is contributed by radon daughters. Among them, the unbound radon daughters with a concentration ratio of only 5% - 13% contribute 30.22% - 46.24% of the total radiation dose. Therefore, removing radon daughters is more practical than removing radon, and the key to removing radon daughters lies in removing unbound radon daughters.

[0005] The existing radon daughter removal air purifiers have not been widely used in the market and mainly have the following two major problems:

[0006] 1. Lack of real-time monitoring of radon daughter concentration. All existing radon daughter removal air purifiers must rely on radon daughter concentration detectors to monitor the changes in indoor radon daughter concentration in real time and test the radon daughter removal ability of the radon daughter removal air purifiers. However, the radon daughter removal air purifiers themselves do not have the ability to monitor the indoor radon daughter concentration in real time, and indoor personnel cannot understand the indoor radon daughter concentration level through the radon daughter removal air purifiers themselves and need the assistance of other devices.

[0007] 2. Poor radon daughter removal effect in high-radon areas. Most of the existing radon daughter removal air purifiers adopt the electrostatic - filtration purification mode, which mainly plays the role of purifying large-sized radon daughters and has little effect on purifying small-sized radon daughters. For example, in two underground projects, after the radon daughter removal air purifiers were turned on and operated stably, the radon daughter concentration in the former dropped from 933 Bq / m3 to 163.8 Bq / m3, with a decrease of 82.4%, and the latter dropped from 2160 Bq / m3 to 322 Bq / m3, with a decrease of 85.1%. By comparing before and after, it can be found that although the radon daughter removal rate of the latter has increased, its radon daughter control level has decreased significantly, and it has exceeded the dose equivalent limit of 5 mSv allowed for the general public set by the International Atomic Energy Agency, and the harm to the human body is still obvious.

[0008] Therefore, due to the importance attached to the safety of the working and living environments of people in radon-polluted areas, it is necessary to provide an intelligent radon daughter removal air purifier that can monitor the radon daughter concentration in real time, remove radon daughters efficiently, and control the radon daughter concentration below the safety line for a long time. Summary of the Invention

[0009] The object of the present invention is to solve the above problems in the prior art, and to provide an intelligent radon daughter removing air purifier, which can efficiently handle the radon daughter radiation pollution problem in high-radon areas, and control the radon daughter concentration below the safety line for a long time. At the same time, the intelligent radon daughter removing air purifier can also monitor the change level of indoor radon daughter concentration in real time, and automatically adjust the air volume of the fan according to the obtained radon daughter concentration.

[0010] To achieve the above object, the present invention adopts the following technical solutions:

[0011] An intelligent radon daughter removing air purifier, comprising a box body, a fan, a purification filter element section, an air quality monitoring sensor, an intelligent touch display screen, an electric controller, an air inlet, an air outlet, and a coarse metal filter screen;

[0012] The air inlet is arranged on the left and right sides at the bottom of the box body; the fan is arranged in the upper middle part of the box body; the air outlet is arranged at the top of the box body; the purification filter element section is installed in the lower middle part of the box body; the air quality monitoring sensor is installed in the upper part of the box body, with independent ventilation and equipped with corresponding air inlet holes, air exhaust holes and a micro exhaust fan; the coarse metal filter screen is fixedly installed on the inner wall of the box body adjacent to the lower part of the purification filter element section; the intelligent touch display screen is installed in the upper middle part of the front of the box body; the electric controller is electrically connected to the fan, the purification filter element section, the air quality monitoring sensor and the intelligent display screen respectively, and controls the opening and closing of the fan, the purification filter element section, the air quality monitoring sensor and the intelligent touch display screen.

[0013] The purification filter element section is sequentially provided with a double-zone high-voltage electrostatic field purification filter element, a negative ion ionization purification filter element, a dynamic electret fiber purification filter element, and a micro-electrostatic plate purification filter element along the air flow direction.

[0014] The double-zone high-voltage electrostatic field purification filter element includes a first metal outer frame, a front-end wire plate type high-voltage electrostatic field and a rear-end flat plate type high-voltage electrostatic field; the front-end wire plate type high-voltage electrostatic field includes a plurality of arc wires and a plurality of first electrode plates, and the plurality of arc wires and the plurality of first electrode plates are alternately and parallelly fixed on the first metal outer frame at a certain distance interval and are connected to the electric controller;

[0015] The rear-end flat plate type high-voltage electrostatic field includes a plurality of first conductive columns and the plurality of second electrode plates, the plurality of second electrode plates are parallelly fixed on the first conductive columns at a certain distance interval, and the plurality of first conductive columns are parallelly and juxtaposedly fixed on the first metal outer frame at a certain distance interval and are connected to the electric controller.

[0016] The negative ion ionization purification filter element includes a second metal outer frame, a plurality of third electrode plates, a plurality of serrated electrode sheets and a plurality of second conductive pillars; the plurality of third electrode plates are symmetrically fixed on the upper and lower sides of the second metal outer frame at a certain distance, the plurality of serrated electrode sheets are fixed on the second conductive pillars in parallel and are located at the center of two adjacent third electrode plates, and the plurality of second conductive pillars are fixed on the second metal outer frame in parallel at a certain distance and are connected to the electric controller.

[0017] The dynamic electret fiber purification filter element includes a metal mesh, a dielectric polarized fiber layer and a charging mesh; the metal mesh has two layers, which are located on the outermost side; the dielectric polarized fiber layer has two layers, which are respectively located on the inner side of the metal mesh; the charging mesh is embedded and fixed in the middle of the dielectric polarized fiber layer and connected to the electric controller.

[0018] The micro-electrostatic plate purification filter element comprises a flame-retardant plastic outer frame and a high-density electret orifice plate, wherein the high-density electret orifice plate is fixed on the flame-retardant plastic outer frame and connected to the electric controller.

[0019] The air quality monitoring sensor integrates a temperature and humidity sensor, a PM2.5 sensor, a CO2 / TVOC sensor, and a radon progeny sensor.

[0020] The intelligent touch display screen displays temperature and humidity values, PM2.5 values, TVOC values, CO2 values, radon progeny concentrations, fault and dirt status; the buttons include an on / off button, an operation mode button, and a timing button.

[0021] The operation mode key includes an automatic adjustment key, which is used to automatically adjust the air volume of the fan through an electronic controller according to the radon progeny concentration.

[0022] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0023] 1. Secondary synergistic effect: The present invention newly adds a negative ion ionization purification filter element, which can play a secondary synergistic role. First, it can make the positively charged radon progeny "escaped" from the dual-zone high-voltage electrostatic field purification filter element attract and combine with negatively charged particles to generate radon progeny with larger particle size; second, it can promote the "escaped" neutral radon progeny to carry negative charge or collide and adsorb with negatively charged particles to form radon progeny with larger particle size, thereby facilitating the purification and adsorption of radon progeny by the rear-end purification filter element section.

[0024] 2. Strong radon progeny removal ability: The present invention removes the filter screen structure in the original mode and adds a combination of a dynamic electret fiber purification filter element + a micro-electrostatic plate purification filter element. In the dynamic electret fiber purification filter element, the polarized fibers show a continuous strengthening process of charging - attenuation - recharging under the action of a high-voltage electric field. In this process, numerous densely stacked electrostatic fields are formed on the surface of the dielectric fibers, so that the radon progeny flowing out of the negative ion ionization purification filter element will be firmly adsorbed and no longer disperse after entering this filter element; the high-density electret orifice plate in the micro-electrostatic plate purification filter element is arranged in multiple layers, with fine pores and a large specific surface area, and a dense fine electrostatic field is formed between the pores of the filter element. When the radon progeny "escaping" from the dynamic electret fiber purification filter element flows through this filter element, it will be adsorbed on the high-density electret orifice plate due to physical and electric field forces, and finally the clean purified air is released into the indoor environment.

[0025] 3. High degree of intelligence: The present invention first adds a radon progeny sensor to the air quality monitoring sensor. This sensor can transmit the indoor radon progeny concentration to the intelligent touch display screen in real time, enabling indoor personnel to understand the indoor radon progeny concentration level through the intelligent radon progeny removal air purifier itself without the assistance of other devices; at the same time, the automatic button on the intelligent touch display screen can automatically adjust the air volume of the fan according to the radon progeny concentration measured by the radon progeny sensor, realizing precise control of indoor radon progeny pollution, reducing both the continuous operation cost of the intelligent radon progeny removal air purifier and extending its service life.

[0026] 4. Convenient to use and maintain: The combination of the dynamic electret fiber purification filter element + the micro-electrostatic plate purification filter element adopted in the present invention, compared with the commonly used bag-type filter screen in the prior art, not only reduces the thickness but also reduces the air resistance; and all the filter elements in the purification filter element section are in the form of track pulling, which is very convenient for cleaning or replacement. Brief Description of the Drawings

[0027] Figure 1 is the overall structure schematic diagram of the present invention;

[0028] Figure 2 is the exploded structure schematic diagram of the present invention.

[0029] Figure 3 is the overall structure schematic diagram of the double-zone high-voltage electrostatic field purification filter element.

[0030] Figure 4 is the internal structure cross-sectional view of the double-zone high-voltage electrostatic field purification filter element.

[0031] Figure 5 is the front view of the rear-end flat high-voltage electrostatic field.

[0032] Figure 6 is the overall structure schematic diagram of the negative ion ionization purification filter element.

[0033] Figure 7 It is the front view of the negative ion ionization purification filter element.

[0034] Figure 8 It is the enlarged view of the serrated electrode plate.

[0035] Figure 9 It is the overall structural schematic diagram of the dynamic electret fiber purification filter element.

[0036] Figure 10 It is the exploded structural schematic diagram of the dynamic electret fiber purification filter element.

[0037] Figure 11 It is the overall structural schematic diagram of the micro-electrostatic plate purification filter element.

[0038] Figure 12 It is the structural schematic diagram of the air quality monitoring sensor.

[0039] Figure 13 It is the front view of the intelligent touch display screen.

[0040] Reference numerals: housing 1, fan 2, purification filter element section 3, air quality monitoring sensor 4, electronic controller 5, air inlet 6, air outlet 7, coarse filter screen 8, intelligent touch display screen 9, double-zone high-voltage electrostatic field purification filter element 31, negative ion ionization purification filter element 32, dynamic electret fiber purification filter element 33, micro-electrostatic plate purification filter element 34, second electrode plate 312, first metal outer frame 313, arc line 314, first electrode plate 315, first conductive column 316, second metal outer frame 320, third electrode plate 321, serrated electrode plate 322, second conductive column 323, metal mesh 331, dielectric polarization fiber layer 332, charging grid 333, flame-retardant plastic outer frame 340, high-density electret orifice plate 341, temperature and humidity sensor 41, PM2.5 sensor 42, CO2 / TVOC sensor 43, radon progeny sensor 44, air inlet hole 46, exhaust hole 47, micro exhaust fan 48, temperature and humidity value 90, PM2.5 value 91, TVOC value 92, CO2 value 93, radon progeny concentration 94, fault and dirt state 95, buttons include power on / off button 96, operation mode button 97, timing button 98. Detailed implementation manners

[0041] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the drawings and embodiments.

[0042] As Figures 1 - 2 shown, this embodiment includes a housing 1, a fan 2, a purification filter element section 3, an air quality monitoring sensor 4, an intelligent touch display screen 9, an electronic controller 5, an air inlet 6, an air outlet 7, and a coarse metal filter screen 8.

[0043] The air inlet 6 is arranged on the outer walls on the left and right sides of the bottom of the box body 1. The air inlet 6 is hollowed out to guide the airflow into the box body 1 and remove large-sized garbage that moves with the airflow.

[0044] The air outlet 7 is arranged on the top of the box body 1, and the air outlet 7 is in a grid shape, guiding the air flow blown by the fan 2 in the box body 1 to flow to the indoor space at a uniform speed.

[0045] The fan 2 is arranged in the middle and upper part of the box 1 and is electrically connected to the electric controller 5. The electric controller 5 and the intelligent touch display screen 9 coordinate to control the start and stop and speed regulation of the fan 2. When the fan 2 starts working, it draws indoor air through the air inlet 6 into the coarse metal filter 8 and the purification filter element section 3 in the box 1 for various related treatments, and finally discharges it from the air outlet 7, thereby promoting the mutual circulation of air inside and outside the box 1.

[0046] The coarse metal filter 8 is arranged at the upper part of the air inlet 6 in the box body 1 and close to the lower part of the purification filter element segment 3. It can intercept large-size particles and flying insects above 5μm in the air and prevent them from entering the purification filter element segment 3 to cause a sharp drop in the resistance of the local air and generate electric sparks.

[0047] The purification filter element segment 3 is installed in the middle and lower part of the box body 1 to efficiently treat indoor radon daughter pollution. The purification filter element segment 3 is arranged along the airflow direction in sequence as a dual-zone high-voltage electrostatic field purification filter element 31, a negative ion ionization purification filter element 32, a dynamic electret fiber purification filter element 33, and a micro-electrostatic plate purification filter element 34.

[0048] like Figures 3 - 5 As shown, the dual-zone high-voltage electrostatic field purification filter element 31 includes a first metal outer frame 313, a front-end line-plate type high-voltage electrostatic field and a rear-end flat-plate type high-voltage electrostatic field; the front-end line-plate type high-voltage electrostatic field is composed of a plurality of arc wires 314 and a plurality of first electrode plates 315, and the plurality of arc wires 314 and the plurality of first electrode plates 315 are alternately and parallelly fixed on the first metal outer frame 313 at a certain distance interval and connected to the electric controller 5;

[0049] The rear-end flat-plate high-voltage electrostatic field is composed of a plurality of first conductive columns 316 and a plurality of second electrode plates 312 . The plurality of second electrode plates 312 are fixed in parallel on the first conductive columns 316 at a certain distance interval. The plurality of first conductive columns 316 are fixed in parallel and parallel on the first metal outer frame 313 at a certain distance interval and are connected to the electric controller 5 .

[0050] After the dual-zone high-voltage electrostatic field purification filter element 31 is powered on and operates, a corona region is formed within the front-end wire plate type high-voltage electrostatic field. The strong ion wind generated in the corona region will cause intense disturbance to the surrounding air flow, increasing the probability of collision and adsorption between radon daughters and particulate matters and making them carry positive charges. When the charged radon daughters move to the rear-end flat plate type high-voltage electrostatic field, they will be adsorbed onto the second electrode plate 312 under the action of electrostatic force.

[0051] As Figures 6 - 8 shown, the negative ion ionization purification filter element 32 is composed of a second metal outer frame 320, a number of third electrode plates 321, a number of serrated electrode sheets 322, and a number of second conductive columns 323; the number of third electrode plates 321 are symmetrically fixed in parallel at a certain distance interval on the upper and lower sides of the second metal outer frame 320, the number of serrated electrode sheets 322 are fixed in parallel on the second conductive columns 323 and are located at the central positions between two adjacent third electrode plates 321, and the number of second conductive columns 323 are fixed in parallel on the second metal outer frame 320 at a certain distance interval and are connected to the electronic control device 5.

[0052] After the negative ion ionization purification filter element 32 is powered on and operates, high-voltage cathode discharge occurs at the serrated tips of the serrated electrode sheets 322, emitting a large number of electrons into the air to form a negative ion layer, making the particulate matters in the purification filter element section 3 carry negative charges. Firstly, it can make the positively charged radon daughters entering the negative ion ionization purification filter element 32 attract and combine with the negatively charged particulate matters to generate large-particle-size radon daughters; secondly, it can promote the neutral radon daughters entering the negative ion ionization purification filter element 32 to carry negative charges or collide and adsorb with the negatively charged particulate matters to form large-particle-size radon daughters, thus facilitating their adsorption onto the third electrode plates 321 under the action of electric field force.

[0053] As Figures 9 - 10 shown, the dynamic electret fiber purification filter element 33 includes a metal mesh 331, a dielectric polarization fiber layer 332, and a charging mesh 333. There are two layers of the metal mesh 331, which are located on the outermost side; there are two layers of the dielectric polarization fiber layer 332, which are respectively located inside the metal mesh 331; the charging mesh 333 is embedded and fixed in the middle of the dielectric polarization fiber layer 332 and is connected to the electronic control device 5.

[0054] When the dynamic electret fiber purification filter element 33 is powered on and operates, after the dielectric polarization fiber layer 332 is polarized, under the action of the high-voltage electric field of the charging mesh 333, it shows a continuous strengthening process of charging - decay - recharging. During this process, numerous densely superimposed electrostatic fields are formed on the surface of the dielectric polarization fiber layer 332, making the radon daughters entering the dynamic electret fiber purification filter element 33 be firmly adsorbed and no longer disperse.

[0055] As Figure 11As shown, the micro-electrostatic plate purification filter element 34 includes a flame-retardant plastic outer frame 340 and a high-density electret orifice plate 341. The high-density electret orifice plate 341 is fixed on the flame-retardant plastic outer frame 340 and is connected to the electronic controller 5.

[0056] After the high-voltage terminal of the micro-electrostatic plate purification filter element 34 discharges when it is powered on, a dense and fine electrostatic field is formed in the gaps of the high-density electret orifice plate 341, so that the radon daughters entering the micro-electrostatic plate purification filter element 34 will be adsorbed on the high-density electret orifice plate 341 due to the action of the electric field force and physical action.

[0057] As Figures 1 - 2 and Figure 12 shown, the air quality monitoring sensor 4 is installed on the upper part of the right inner wall of the box body 1 and is electrically connected to the electronic controller 5. It is independently ventilated and is equipped with corresponding air inlet holes 46, air outlet holes 47 and a micro exhaust fan 48; the air quality monitoring sensor 4 integrates a temperature and humidity sensor 41, a PM2.5 sensor 42, a CO2 / TVOC sensor 43, and a radon daughter sensor 44. After the air quality monitoring sensor 4 is powered on, it can monitor the indoor air quality in real time, and transmit the data to the intelligent touch display screen 9 in real time through the electronic controller 5 for indoor personnel to read and judge.

[0058] As Figures 1 - 2 and Figure 13 shown, the intelligent touch display screen 9 is set in the upper middle part of the front of the box body 1 and is electrically connected to the electronic controller 5. The display content of the intelligent touch display screen 9 includes temperature and humidity value 90, PM2.5 value 91, TVOC value 92, CO2 value 93, radon daughter concentration 94, fault and dirt state 95; the keys include a power on / off key 96, an operation mode key 97 (auto, low, medium, high, sleep), and a timing key 98 (1, 2, 4, 8 hours).

[0059] After the intelligent touch display screen 9 is powered on, it can control the start / stop, timing and operation mode of the intelligent radon daughter removing air purifier through the electronic controller 5 and can display the real-time monitoring data of the indoor air quality. Among them, the auto key in the operation mode key 97 can automatically adjust the air volume of the fan 2 according to the radon daughter concentration 94 measured by the air quality monitoring sensor 4 through the electronic controller 5, realizing precise control and treatment of indoor radon daughter pollution, reducing both the maintenance cost of the continuous operation of the intelligent radon daughter removing air purifier and prolonging the service life of the intelligent radon daughter removing air purifier.

[0060] Refer to Figures 1 - 2 to describe the working process and principle of the intelligent radon daughter removing air purifier of the present invention. Figure 2 As shown by the arrows in

[0061] 1. The intelligent radon daughter removal air purifier is powered on, and the intelligent radon daughter removal air purifier is started to work through the intelligent touch display screen 9 and the electronic controller 5;

[0062] 2. Under the action of the fan 2, indoor air enters the box body 1 from the left and right sides at the bottom of the box body 1 through the air inlet 6, and large-particle-size particles with a diameter of more than 5 μm in the air and flying insects are filtered out through the coarse metal filter screen 8;

[0063] 3. The air in the box body 1 continues to flow upward and passes through the double-zone high-voltage electrostatic field purification filter element 31. An electric corona area is formed in the front wire plate type high-voltage electrostatic field of the double-zone high-voltage electrostatic field purification filter element 31. The strong ion wind generated in the electric corona area will cause severe disturbance to the surrounding air flow, increasing the probability of collision and adsorption between radon daughters and particles and making them carry positive charges. When the charged radon daughters move to the rear plate type high-voltage electrostatic field of the double-zone high-voltage electrostatic field purification filter element 31, they will be adsorbed on the second electrode plate 312 under the action of electrostatic force. Therefore, the double-zone high-voltage electrostatic field purification filter element 31 mainly plays the role of adsorbing larger-diameter combined radon daughters and a very small part of uncombined radon daughters;

[0064] 4. The air in the box body 1 continues to flow upward and passes through the negative ion ionization purification filter element 32. The negative ion ionization purification filter element 32 emits a large number of electrons to form a negative ion layer through the high-voltage cathode discharge at the serrated tips of the serrated electrode plates 322. First, it can make the positively charged radon daughters entering the negative ion ionization purification filter element 32 and the negatively charged particles attract and combine with each other to generate larger-diameter radon daughters; second, it can promote the neutral radon daughters entering the negative ion ionization purification filter element 32 to carry negative charges or collide and adsorb with the negatively charged particles to form larger-diameter radon daughters, so as to be adsorbed on the third electrode plate 321 under the action of electric field force. Therefore, the negative ion ionization purification filter element 32 mainly plays the role of increasing the diameter of smaller-diameter radon daughters and intercepting the smaller-diameter radon daughters that "escape" from the double-zone high-voltage electrostatic field purification filter element 31;

[0065] 5. The air in the box body 1 continues to flow upward and passes through the dynamic electret fiber purification filter element 33. After the dielectric polarization fiber layer 332 of the dynamic electret fiber purification filter element 33 is polarized, it shows a continuous strengthening process of charging - decay - recharging under the action of the high-voltage electric field of the charging network 333. In this process, numerous dense and superimposed electrostatic fields are formed on the surface of the dielectric polarization fiber layer 332, so that the radon daughters entering the dynamic electret fiber purification filter element 33 are firmly adsorbed and no longer disperse;

[0066] 6. The air inside the box body 1 continues to flow upward and passes through the micro-electrostatic plate purification filter element 34. The micro-electrostatic plate purification filter element 34 uses high-voltage end discharge to form a dense and fine electrostatic field in the gaps of the high-density electret orifice plate 341, so that the radon daughters entering the micro-electrostatic plate purification filter element 34 are adsorbed on the high-density electret orifice plate 341 due to the action of electric field force and physical action;

[0067] 7. Finally, the air inside the box body 1 is discharged into the indoor space through the air outlet 7 under the action of the fan 2 as fresh air that has removed radon daughters and been purified;

[0068] 8. Under the action of the micro exhaust fan 48, the indoor air enters the air quality monitoring sensor 4 through the air inlet hole 46, and then is discharged through the air exhaust hole 47 and re-enters the indoor space. The air quality monitoring sensor 4 can monitor the indoor air quality in real time, and transmit the data to the intelligent touch display screen 9 in real time through the electronic controller 5 for indoor personnel to read and judge. Among them, the automatic button of the operation mode key 97 on the intelligent touch display screen 9 can automatically adjust the air volume of the fan 2 according to the radon daughter concentration 94 measured by the air quality monitoring sensor 4 through the electronic controller 5, so as to realize the precise control and treatment of indoor radon daughter pollution, thereby reducing both the maintenance cost of the intelligent radon daughter removal air purifier during continuous operation and prolonging the service life of the intelligent radon daughter removal air purifier.

Claims

1. Intelligent radon daughter removing air purifier, characterized in that: It includes a box body, a fan, a purification filter element section, an air quality monitoring sensor, an intelligent touch display screen, an electronic controller, an air inlet, and an air outlet; The air inlets are arranged on the left and right sides at the bottom of the box body; the fan is arranged in the upper middle part of the box body; the air outlet is arranged at the top of the box body; the purification filter element section is installed in the lower middle part of the box body, and a double-zone high-voltage electrostatic field purification filter element is arranged along the air flow direction in the purification filter element section; the air quality monitoring sensor is installed in the upper part of the box body, with independent ventilation and equipped with corresponding air inlet holes, air exhaust holes and a micro exhaust fan; the intelligent touch display screen is installed in the upper middle part of the front of the box body; the electronic controller is electrically connected to the fan, the purification filter element section, the air quality monitoring sensor and the intelligent display screen respectively and controls the opening and closing of the fan, the purification filter element section, the air quality monitoring sensor and the intelligent touch display screen; The purification filter element section further includes a negative ion ionization purification filter element, a dynamic electret fiber purification filter element and a micro-electrostatic plate purification filter element; the negative ion ionization purification filter element is arranged above the double-zone high-voltage electrostatic field purification filter element; the dynamic electret fiber purification filter element is arranged above the negative ion ionization purification filter element; the micro-electrostatic plate purification filter element is arranged above the dynamic electret fiber purification filter element; After the negative ion ionization purification filter element is powered on and operates, the sawtooth tip of the sawtooth-shaped electrode plate discharges at a high voltage cathode, emitting a large number of electrons into the air to form a negative ion layer, making the particulate matter in the purification filter element section carry negative charges. First, it makes the positively charged radon daughters entering the negative ion ionization purification filter element attract and combine with the negatively charged particulate matter to generate large-sized radon daughters; second, it promotes the neutral radon daughters entering the negative ion ionization purification filter element to carry negative charges or collide and adsorb with the negatively charged particulate matter to form large-sized radon daughters. Therefore, the negative ion ionization purification filter element mainly plays the role of increasing the particle size of small-sized radon daughters and intercepting the small-sized radon daughters escaping from the double-zone high-voltage electrostatic field purification filter element.

2. The intelligent radon daughter air purifier according to claim 1, wherein: The double-zone high-voltage electrostatic field purification filter element includes a first metal outer frame, a front-end wire plate type high-voltage electrostatic field and a rear-end flat plate type high-voltage electrostatic field; the front-end wire plate type high-voltage electrostatic field includes a plurality of arc wires and a plurality of first electrode plates, and the plurality of arc wires and the plurality of first electrode plates are alternately and parallelly fixed on the first metal outer frame at a certain distance interval and are connected to the electronic controller; The rear-end flat plate type high-voltage electrostatic field includes a plurality of first conductive columns and a plurality of second electrode plates, the plurality of second electrode plates are parallelly fixed on the first conductive columns at a certain distance interval, and the plurality of first conductive columns are parallelly and juxtaposedly fixed on the first metal outer frame at a certain distance interval and are connected to the electronic controller.

3. The intelligent radon daughter air purifier according to claim 1, characterized in that: The negative ion ionization purification filter element includes a second metal outer frame, a plurality of third electrode plates, a plurality of sawtooth-shaped electrode plates and a plurality of second conductive columns; the plurality of third electrode plates are parallelly and symmetrically fixed on the upper and lower sides of the second metal outer frame at a certain distance interval, the plurality of sawtooth-shaped electrode plates are parallelly fixed on the second conductive columns and are located at the center positions between two adjacent third electrode plates, and the plurality of second conductive columns are parallelly fixed on the second metal outer frame at a certain distance interval and are connected to the electronic controller.

4. The intelligent radon daughter air purifier according to claim 1, characterized in that: The dynamic electret fiber purification filter element includes a metal mesh, a dielectric polarization fiber layer, and a charging mesh; there are two layers of the metal mesh, which are located on the outermost side; there are two layers of the dielectric polarization fiber layer, which are respectively located inside the metal mesh; the charging mesh is embedded and fixed in the middle of the dielectric polarization fiber layer and is connected to the electric controller.

5. The intelligent radon daughter air purifier according to claim 1, characterized in that: The micro-electrostatic plate purification filter element includes a flame-retardant plastic outer frame and a high-density electret orifice plate, and the high-density electret orifice plate is fixed on the flame-retardant plastic outer frame and is connected to the electric controller.

6. The intelligent radon daughter air purifier according to claim 1, characterized in that: It further includes a coarse-effect metal filter screen, and the coarse-effect metal filter screen is fixedly installed on the inner wall of the box body adjacent to the lower part of the purification filter element section.

7. The intelligent radon daughter air purifier according to claim 1, characterized in that: The air quality monitoring sensor integrates a temperature and humidity sensor, a PM2.5 sensor, a CO2 / TVOC sensor, and a radon progeny sensor.

8. The intelligent radon daughter air purifier according to claim 1, wherein: The intelligent touch display screen displays the temperature and humidity value, PM2.5 value, TVOC value, CO2 value, radon progeny concentration, fault and dirt state; the keys include a power on / off key, an operation mode key, and a timing key.

9. The intelligent radon daughter air purifier according to claim 8, wherein: The operation mode key includes an automatic adjustment key, and the automatic adjustment key is used to automatically adjust the air volume of the fan through the electric controller according to the radon progeny concentration.

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