A formaldehyde removal device and method for building decoration

Abstract

The present application relates to formaldehyde removal technical field, specifically to a kind of formaldehyde removal device and formaldehyde removal method for building decoration, including cabinet and control panel, the cabinet is equipped with the spray cover that can be to hot air and humidity are sprayed, the cabinet is equipped with the lifting drive structure for the height adjustment of spray cover, the spray cover is equipped with humidifier, by lifting drive structure driving spray cover up and down, different height in room can be continuously sprayed wet hot air, cooperate with humidifier, hot air supply component, spray port, stable create high temperature and high humidity environment, accelerate formaldehyde release from source, can continuously spray wet hot air to different height in room, accelerate formaldehyde release in whole area, solve the problem that traditional equipment height is fixed, formaldehyde removal is not uniform, again cooperate switch window component to realize window automatic opening and closing, can timely ventilate and discharge when formaldehyde accumulates, without manual operation, form acceleration release and automatic discharge closed loop, substantially shorten formaldehyde removal period.

Description

Technical Field

[0001] This invention relates to the field of formaldehyde removal technology, specifically to a formaldehyde removal device and method for building decoration. Background Technology

[0002] Formaldehyde has many industrial applications, and it is also found in many commonly used interior decoration materials such as wood-based panels, paints, carpets, and wallpapers, all of which contain and release formaldehyde. After building renovations, these materials continue to release harmful gases such as formaldehyde, seriously affecting indoor air quality and human health. The main routes of human exposure to formaldehyde are inhalation, ingestion, and skin contact.

[0003] The announcement number CN215842376U discloses an environmentally friendly formaldehyde removal device for building decoration, which includes an upper cover device for filtering formaldehyde, a box device for blowing airflow below the upper cover device, and a chassis device for overall movement below the box device; the upper cover device includes an upper cover body, a support net is provided on the top of the upper cover body, activated carbon blocks are provided inside the upper cover body, and four clamping plates are evenly distributed at the four corners of the bottom of the upper cover body.

[0004] The publication number CN118892719A discloses an environmentally friendly formaldehyde removal device and method for building decoration. The environmentally friendly formaldehyde removal device includes a base, and the base is equipped with an air intake component, a formaldehyde removal component, a reflux component, an exhaust component, a formaldehyde concentration monitoring device, a temperature monitoring device, and a control device.

[0005] Traditional ventilation methods are inefficient and time-consuming, cannot actively accelerate formaldehyde release, and rely on manual opening and closing of windows, making it difficult to achieve automated control. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] The purpose of this invention is to provide a formaldehyde removal device and method for building decoration in order to solve the above-mentioned problems.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] This invention provides a formaldehyde removal device for building decoration, comprising a chassis and a control panel. The chassis is equipped with a spray box cover capable of spraying hot air and moisture. The chassis is also equipped with a lifting drive structure for adjusting the height of the spray box cover. A humidifier is provided on the spray box cover. A hot air supply assembly is provided between the chassis and the spray box cover. The chassis is equipped with several window opening and closing assemblies. The control panel can control the opening and closing of the windows through the window opening and closing assemblies. The chassis is equipped with a temperature and humidity sensor group, and the output terminal of the temperature and humidity sensor group is electrically connected to the input terminal of the control panel.

[0011] With the height adjustment of the ejection box cover by the lifting drive structure, the ejection box cover can eject humidified hot air at different heights.

[0012] This application proposes some specific embodiments. The lifting drive structure has two oppositely arranged components. The lifting drive structure includes a diamond-shaped telescopic frame. The lower end of the diamond-shaped telescopic frame is provided with a spacing adjustment structure for its expansion and contraction. A connecting rod is connected between the upper ends of the diamond-shaped telescopic frames of the two lifting drive structures. The lower side of the ejection box cover is provided with two or more guide rails. The guide rails are provided with guide grooves for sliding with the connecting rod. The connecting rod is provided with a limiting rod that can guide and limit the connecting rod within the guide groove.

[0013] This application proposes some specific embodiments. The spacing adjustment structure includes an adjustment slide groove opened in the chassis. A first motor is provided at the middle position of the adjustment slide groove. The first motor is a dual-axis motor. The two output shafts of the first motor are respectively connected to lead screws. The two lead screws have opposite rotation directions. Each lead screw is threadedly connected to an adjustment slider. The adjustment slider is slidably disposed in the adjustment slide groove. The adjustment slider is hinged to the lower end of the diamond-shaped telescopic frame.

[0014] This application proposes some specific embodiments, wherein a plurality of spray nozzles are provided on the outer periphery of the spray box cover, and a water inlet pipe is provided on the spray box cover for adding water to the humidifier. The upper end of the water inlet pipe extends to the upper surface of the spray box cover, and a sealing plug is detachably provided on the upper end of the water inlet pipe. A ventilation groove is provided on the spray box cover for communicating between the steam outlet of the humidifier and the spray nozzles.

[0015] This application proposes some specific embodiments, wherein the hot air supply assembly includes an air heater and a blower respectively disposed on the chassis, the air outlet of the blower is connected to the air inlet of the air heater, a spiral air guide pipe is provided between the air heater and the nozzle cover, the air outlet of the air heater is connected to the spiral air guide pipe through a second connecting conduit, and the upper end of the spiral air guide pipe is connected to the nozzle through a first connecting conduit.

[0016] This application proposes some specific embodiments. The upper side of the chassis has an intermediate storage chamber for storing the spiral air guide tube and humidifier. The chassis on both sides of the intermediate storage chamber has lateral storage chambers for storing the diamond telescopic frame. The bottom side of the chassis is provided with several casters.

[0017] This application proposes some specific embodiments. The window opening and closing assembly includes a base rod with a mounting plate on it. The base rod is connected to the housing via electrical wires. A second motor is provided on the base rod. One end of a rotating arm is connected to the output shaft of the second motor. The other end of the rotating arm is hinged to a window receiving rod via a hinge seat. The housing is provided with a placement frame for positioning the base rod. The placement frame is made of elastic material. The base rod can be stably locked inside the placement frame and can be removed from the top of the placement frame.

[0018] This application proposes some specific embodiments in which a sealing gasket is provided on the lower edge of the ejector box cover. When the ejector box cover is driven to descend to the lowest height position by the lifting drive structure, the ejector box cover is sealed and abutted against the upper edge of the chassis by the sealing gasket.

[0019] This application proposes some specific embodiments. The temperature and humidity sensor group includes a temperature sensor and a humidity sensor, which can collect indoor temperature and humidity data in real time and transmit them to the control panel. The control panel integrates a touch screen and an alarm module. The control panel can preset temperature and humidity thresholds and realize the control of the air heater and blower.

[0020] A method for removing formaldehyde in building decoration includes the following steps:

[0021] S1: Move the entire unit to the interior of the building to be treated using the casters at the bottom of the chassis, and install the window switch assembly in the corresponding position of the window; connect the control panel to the real-time sampling signal of the temperature and humidity sensor group, and preset the target temperature, target humidity, allowable fluctuation range, minimum maintenance duration, first switching threshold and second recovery threshold in the control panel;

[0022] S2: The control panel activates the blower and air heater of the hot air supply component. Air is sent to the air heater by the blower to form hot air. The hot air is then delivered to the spray box cover via the second connecting duct, the spiral air guide duct, and the first connecting duct. At the same time, the humidifier on the spray box cover is activated. The moisture mixes with the hot air through the ventilation slot and is then sprayed into the room through the nozzle on the spray box cover, creating a high-temperature and high-humidity environment that accelerates the release of formaldehyde.

[0023] S3: The control panel controls the first motor of the lifting drive structure to drive two screws with opposite rotation directions to rotate, which drives the adjusting slider to move along the adjusting groove, thereby realizing the extension and retraction of the diamond telescopic frame, which in turn drives the ejection box cover to rise and fall, circulating and ejecting humid and hot airflow to different height areas in the room to ensure uniform release throughout the entire area.

[0024] S4: During the execution of S2 and S3, the control panel continuously reads the current temperature and humidity of the temperature and humidity sensor group at a fixed cycle; combined with the target temperature and humidity and the rate of change of temperature and humidity within the continuous sampling cycle, the release state value is calculated to determine whether the indoor humid and hot environment has entered the stable release stage from the rapid establishment stage; the release state value is qualified only when the temperature and humidity are close to the target value and the change tends to be gradual.

[0025] S5: When the temperature and humidity enter the preset target range, the control panel does not open the window immediately, but starts the maintenance timer only when the temperature and humidity are within the allowable fluctuation range; if any parameter deviates, the timer is reset or decayed; combined with the closeness of the temperature and humidity to the target value and the duration of continuous and stable maintenance, the release sufficiency value is calculated to determine whether the release process has reached the level that can be ventilated and discharged.

[0026] S6: The phase switching and cycle operation control panel weighted couples the release status value and the release sufficiency value to obtain the phase switching judgment value;

[0027] When the judgment value reaches the first switching threshold for several consecutive cycles: the second motor controlling the window opening and closing assembly drives the rotating arm and window rod to move, automatically opening the window for ventilation, and simultaneously reducing or stopping the output of the air heater and blower;

[0028] When the judgment value drops below the second recovery threshold: control the window opening and closing components to close the window, and re-execute S2 and S3 to cycle through the release, ventilation, and closed-loop formaldehyde removal.

[0029] (III) Beneficial Effects

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0031] 1. The lifting drive structure moves the spray box cover up and down, continuously spraying humid and hot air at different heights in the room. Combined with a humidifier, hot air supply components, and spray nozzles, it stably creates a high-temperature and high-humidity environment, accelerating formaldehyde release from the source. It can continuously spray humid and hot air at different heights in the room, accelerating formaldehyde release throughout the entire area, solving the problems of fixed height and uneven formaldehyde removal of traditional equipment. In addition, the window opening and closing components enable automatic opening and closing of windows, allowing timely ventilation and expulsion when formaldehyde accumulates, without manual operation. This forms a closed loop of accelerated release and automatic discharge, significantly shortening the formaldehyde removal cycle.

[0032] 2. The lifting mechanism uses a combination of double-set diamond telescopic frames, guide rails, guide chutes, and limit rods, ensuring stable lifting trajectory and uniform force distribution; the hot air conveying system uses a spiral air duct, which can freely extend and retract in conjunction with the lifting drive structure, ensuring stable and durable long-term operation.

[0033] 3. Temperature and humidity sensor group and control panel, which monitor and automatically adjust temperature and humidity in real time, and automatically open and close windows through window opening and closing components to realize a closed-loop operation of heating, humidifying to promote release and automatic ventilation to remove formaldehyde, without the need for manual operation. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0036] Figure 2 This is a three-dimensional structural diagram of the first direction of the present invention;

[0037] Figure 3 This is a schematic diagram of the AA cross-sectional structure of the present invention;

[0038] Figure 4 This is a schematic diagram of the BB cross-sectional structure of the present invention;

[0039] Figure 5 This is a partially enlarged structural diagram at point C of the present invention;

[0040] Figure 6 This is a three-dimensional structural diagram of the second direction of the present invention;

[0041] Figure 7 This is a partially enlarged structural diagram of point D in the present invention;

[0042] Figure 8 This is a three-dimensional structural diagram of the switch window assembly of the present invention.

[0043] The reference numerals in the attached drawings are explained as follows: 1. Chassis; 101. Casters; 102. Central storage chamber; 103. Side storage chamber; 2. Lifting drive structure; 201. First motor; 202. Adjusting slide rail; 203. Lead screw; 204. Adjusting slider; 205. Diamond-shaped telescopic frame; 206. Connecting rod; 207. Limiting rod; 208. Guide rail; 209. Guide slide rail; 3. Ejector box cover; 301. Ejector nozzle; 302. Sealing plug; 303. Vent groove; 304. Addition... 305. Water pipe; 4. Sealing gasket; 5. Hot air supply assembly; 6. Spiral air duct; 7. First connecting duct; 8. Air heater; 9. Blower; 100. Second connecting duct; 11. Humidifier; 200. Window opening and closing assembly; 12. Base rod; 13. Electrical wire; 14. Second motor; 15. Swing arm; 16. Window connecting rod; 17. Mounting plate; 18. Hinge base; 19. Control panel; 200. Placement rack; 200. Temperature and humidity sensor group. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0045] Example 1

[0046] See Figures 1-8 As shown, this invention provides a formaldehyde removal device for building decoration, including a housing 1 and a control panel 7. The housing 1 has a spray box cover 3 capable of spraying hot air and humidified gas. In practical applications, the spray box cover 3 serves as an outlet for heated air and humidified water vapor. The housing 1 also has a lifting drive structure 2 for adjusting the height of the spray box cover 3, thereby enabling rapid spraying of heated and humidified gas at different heights within the formaldehyde removal space, resulting in rapid and uniform formaldehyde removal throughout the space. A humidifier 5 is installed on the spray box cover 3, and a hot air supply assembly 4 is located between the housing 1 and the spray box cover 3. Furthermore, the housing 1 has several window opening and closing assemblies 6, and the control panel 7 can control the opening and closing of the windows via these assemblies. The housing 1 also has a temperature and humidity sensor group 9, the output of which is electrically connected to the input of the control panel 7.

[0047] With the lifting drive structure 2 adjusting the height of the spray box cover 3, the spray box cover 3 can evenly spray humidified hot air at different indoor heights, thus improving the formaldehyde removal efficiency.

[0048] See instruction manual attached Figure 1, Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the lifting drive structure 2 has two sets arranged opposite to each other to ensure a smooth and reliable lifting process. Specifically, the lifting drive structure 2 includes a diamond-shaped telescopic frame 205. The lower end of the diamond-shaped telescopic frame 205 is provided with a spacing adjustment structure for controlling its expansion and contraction. The two ends of the diamond-shaped telescopic frames 205 of the two sets of lifting drive structures 2 are respectively connected by connecting rods 206. The lower side of the ejection box cover 3 is provided with two or more guide rails 208. The guide rails 208 are provided with guide grooves 209 for sliding with the connecting rods 206. The connecting rods 206 are provided with limiting rods 207 that can guide and limit the connecting rods 206 within the guide grooves 209 to ensure the stability of the ejection box cover 3 during the lifting process and prevent tilting.

[0049] Looking further, the spacing adjustment structure includes an adjustment slide 202 inside the housing 1. A first motor 201 is located in the middle of the adjustment slide 202. The first motor 201 is a dual-axis motor, and the two output shafts of the first motor 201 are respectively connected to lead screws 203, with opposite rotation directions. Each lead screw 203 is threadedly connected to an adjustment slider 204, which is slidably disposed in the adjustment slide 202. The adjustment slider 204 is hinged to the lower end of the rhomboid telescopic frame 205. The rotation of the lead screw 203 drives the adjustment slider 204 to move within the adjustment slide 202, thereby adjusting the spacing between the two lower ends of the rhomboid telescopic frame 205, thus realizing the telescopic lifting and lowering of the rhomboid telescopic frame 205.

[0050] See instruction manual attached Figure 1 , Figure 2 and Figure 3 As shown, the spray box cover 3 has several spray nozzles 301 evenly distributed along its outer periphery for dispersing hot air and moisture outward; the spray box cover 3 is provided with a water inlet pipe 304 for adding water to the humidifier 5, the upper end of the water inlet pipe 304 extends to the upper surface of the spray box cover 3, and the upper end of the water inlet pipe 304 is detachably provided with a sealing plug 302 to prevent debris from entering and water vapor from leaking; the spray box cover 3 is provided with a ventilation groove 303 for connecting the steam outlet of the humidifier 5 with the spray nozzles 301, so that water vapor and hot air are fully mixed and sprayed out.

[0051] See instruction manual attached Figure 1 , Figure 2 , Figure 3 and Figure 6As shown, the hot air supply assembly 4 includes an air heater 403 and a blower 404 respectively installed on the casing 1. The air outlet of the blower 404 is connected to the air inlet of the air heater 403 to provide an air source and heating function for hot air generation. A spiral air guide duct 401 is provided between the air heater 403 and the nozzle cover 3. The air outlet of the air heater 403 is connected to the spiral air guide duct 401 through a second connecting conduit 405. The upper end of the spiral air guide duct 401 is connected to the nozzle 301 through a first connecting conduit 402. The spiral air guide duct can freely extend and retract with lifting and lowering without affecting the operation of the structure.

[0052] Meanwhile, the upper side of the casing 1 has an intermediate storage chamber 102 for storing the spiral air duct 401 and the humidifier 5. The casing 1 on both sides of the intermediate storage chamber 102 has lateral storage chambers 103 for storing the diamond telescopic frame 205. When the device is not in use, the components can be completely stored, saving space. The bottom of the casing 1 is equipped with several casters 101, which makes it easy for the device to move flexibly in different rooms.

[0053] See instruction manual attached Figure 1 , Figure 2 and Figure 8 As shown, the window opening and closing assembly 6 includes a base rod 601, on which a mounting plate 606 is provided for easy fixing to the window frame; the base rod 601 is connected to the housing 1 via an electrical wire 602 to realize control signal transmission; a second motor 603 is provided on the base rod 601, and one end of a rotating arm 604 is connected to the output shaft end of the second motor 603. The other end of the rotating arm 604 is hinged to a window connecting rod 605 via a hinge seat 607, and the automatic opening and closing of the window is realized by the motor drive.

[0054] See instruction manual attached Figure 6 and Figure 7 As shown, a sealing gasket 305 is provided on the lower edge of the nozzle cover 3. When the lifting drive structure 2 drives the nozzle cover 3 to descend to the lowest height position, the nozzle cover 3 seals against the upper edge of the casing 1 through the sealing gasket 305, thereby improving the sealing performance and aesthetics after storage.

[0055] In addition, the chassis 1 is provided with a placement rack 8 for positioning the seat rod 601. The placement rack 8 is made of elastic material. The seat rod 601 can be stably locked inside the placement rack 8 and can be taken out from the top of the placement rack 8, which facilitates the storage and use of the window opening and closing assembly.

[0056] Finally, the temperature and humidity sensor group 9 includes a temperature sensor and a humidity sensor, which can collect indoor temperature and humidity data in real time and transmit it to the control panel 7. The control panel 7 integrates a touch screen and an alarm module. The control panel 7 can preset temperature and humidity thresholds and automatically control the air heater 403 and the blower 404 based on data feedback to achieve intelligent operation.

[0057] Working principle of the invention:

[0058] In use, the device is moved to the room to be processed via the casters 101 at the bottom of the chassis 1. The casters 101 can be universal casters with brake pads. After moving, the position can be fixed by the brake pads on the universal casters. The window opening and closing assembly 6 is fixed to the window via the mounting plate 606. In practical applications, the mounting plate 606 can be fixed by adhesive to avoid damage to the window frame. The temperature and humidity sensors in the temperature and humidity sensor group 9 can collect indoor temperature and humidity data in real time and transmit them to the control panel 7. The operator can then control the device. Panel 7 presets temperature and humidity thresholds to maintain a certain temperature and humidity indoors. After startup, the first motor 201 of the lifting drive structure 2 drives two lead screws 203 with opposite rotation directions to rotate, causing the adjusting slider 204 to move towards or away from each other along the adjusting slide 202, driving the diamond telescopic frame 205 to extend and retract. Through the cooperation of the connecting rod 206, guide rail 208 and guide slide 209, the ejection box cover 3 is raised and lowered to the target height. In actual use, the ejection box cover 3 is raised gradually from low to high, and heating and humidification are carried out during this process. Then it is lowered gradually, and so on.

[0059] The blower 404 of the hot air supply assembly 4 sends air into the air heater 403 for heating. The air heater 403 uses existing technology, which is well known to those skilled in the art. The hot air is delivered to the nozzle 301 of the spray box cover 3 via the second connecting duct 405, the spiral air guide duct 401, and the first connecting duct 402. At the same time, the moisture generated by the humidifier 5 is mixed with the hot air through the ventilation groove 303 and sprayed into the room through the nozzle 301 to accelerate the release of formaldehyde. When the indoor temperature and humidity reach the threshold or when formaldehyde needs to be removed, the control panel 7 controls the second motor 603 of the window opening and closing assembly 6 to drive the rotating arm 604 to rotate. The hinge seat 607 drives the window rod 605 to move, so that the window can be opened automatically for ventilation. After ventilation, the control panel 7 controls the window opening and closing assembly 6 to close the window again, and repeats the above operation.

[0060] After use, the lifting drive structure 2 drives the spray box cover 3 to descend, and it seals against the casing 1 through the sealing gasket 305. The spiral air guide duct 401 and the humidifier 5 are stored in the middle storage chamber 102, the diamond telescopic frame 205 is stored in the side storage chamber 103, and the seat rod 601 of the window opening and closing assembly 6 can be snapped onto the placement rack 8 for storage, thus completing the entire formaldehyde removal process.

[0061] Example 2

[0062] This embodiment further optimizes the control flow of the control panel 7. Based on the temperature and humidity data collected by the temperature and humidity sensor group 9 and the timing data inside the control panel 7, the timing for continuing to promote release and switching ventilation is determined.

[0063] This embodiment includes steps S1-S6:

[0064] Step S1: Move the device to the room to be processed using the casters 101 at the bottom of the chassis 1, and install the window switch assembly 6 at the corresponding window position. The control panel 7 receives the real-time sampling signal from the temperature and humidity sensor group 9, and presets the target temperature, target humidity, allowable fluctuation range, minimum maintenance duration, and switching judgment threshold in the control panel 7.

[0065] In step S2, the control panel 7 starts the blower 404 and the air heater 403, so that the outside air is delivered to the air heater 403 through the blower 404 and forms hot air. The hot air is then delivered to the spray box cover 3 through the second connecting duct 405, the spiral air guide duct 401 and the first connecting duct 402. At the same time, the humidifier 5 on the spray box cover 3 generates moisture, which is mixed with the hot air through the ventilation slot 303 and then sprayed into the room through the spray nozzle 301, thereby creating a high temperature and high humidity environment to accelerate the release of formaldehyde from the decoration materials.

[0066] In step S3, the control panel 7 controls the lifting drive structure 2 to operate. The first motor 201 drives the two lead screws 203 to rotate, causing the adjusting slider 204 to move towards or away from each other along the adjusting groove 202. This drives the diamond telescopic frame 205 to extend and retract. Through the linkage 206, guide rail 208, and guide groove 209, the ejection box cover 3 is raised and lowered, allowing the hot and humid airflow to circulate and eject at different heights in the room, thereby improving the consistency of the release conditions in each height area of ​​the room.

[0067] In step S4, during the execution of steps S2 and S3, the control panel 7 continuously reads the current temperature and humidity fed back by the temperature and humidity sensor group 9, and combines the target temperature, target humidity, and the rate of temperature and humidity change over the most recent consecutive sampling periods to determine whether the current indoor humid and hot environment has entered a more stable release-promoting stage from the rapid establishment stage, thus obtaining a release-promoting state value. This release-promoting state value characterizes the degree to which the current indoor environment approaches the ideal release-promoting environment and whether environmental changes have become more gradual, thereby reflecting whether it is still in a simple process of increasing temperature and humidity, or whether it has entered a stable stage suitable for continuing to maintain release. Specifically, the control panel 7 comprehensively considers the following factors to form the release-promoting state value: the higher the degree of closeness between the current temperature and the target temperature, the higher the degree of closeness between the current humidity and the target humidity, and the more gradual the temperature and humidity changes, the higher the release-promoting state value; conversely, if the current temperature and current humidity still deviate significantly from their respective target values, or although they are close to the target values, the temperature and humidity are still in a state of rapid change, the release-promoting state value is lower. By using the above method, the control panel 7 can distinguish between two states: the indoor environment is still in the establishment stage and the indoor environment has been basically established and tends to be stable, thus avoiding entering the next control stage before the humid and hot environment has stabilized.

[0068] Step S5: When the control panel 7 detects that the current temperature and humidity have entered the preset target range, it does not immediately control the window opening / closing component 6 to operate. Instead, it continues to determine whether the current release process has reached a level sufficient to switch to ventilation based on the proximity of the current temperature and humidity to the corresponding target values ​​and the continuous duration of the high temperature and humidity state, thus obtaining a release sufficiency value. The release sufficiency value is used to characterize that the indoor high temperature and humidity environment has not only been established but has also been maintained for a sufficient duration, thereby avoiding premature ventilation caused by opening the window as soon as the threshold is reached.

[0069] Specifically, control panel 7 takes into account the following factors to determine the release adequacy value:

[0070] The closer the current temperature is to the target temperature, the closer the current humidity is to the target humidity, and the longer the current temperature and humidity remain within the preset target range, the higher the release adequacy value will be. If the target range is only reached momentarily, or if it deviates quickly after reaching the target range, or if it is maintained for a certain period of time but the temperature and humidity are not close enough to the target values, the release adequacy value will remain low. Through the above settings, step S5 further determines whether the target release conditions have been maintained continuously for a sufficient duration, thereby ensuring that the decoration materials have a truly effective release process in a high-temperature and high-humidity environment.

[0071] In step S6, the control panel 7 further couples the release-promoting state value obtained in step S4 with the release-sufficiency value obtained in step S5 to obtain a stage switching determination value. Based on the stage switching determination value, it decides whether to continue executing steps S2 and S3 to maintain the release-promoting effect, or to control the window opening and closing assembly 6 to open the window and enter the ventilation stage. The stage switching determination value considers both whether the indoor high-temperature and high-humidity environment has been established and whether the environment has been maintained for a sufficient period of time. Therefore, it can make a more realistic judgment on whether to continue the release-promoting effect or switch to ventilation without relying on a formaldehyde concentration sensor.

[0072] Specifically, the control panel 7 comprehensively weights the release state value and the release sufficiency value. When both reach a high level, the stage switching judgment value increases, indicating that the current indoor environment has met the conditions for switching from the release stage to the ventilation stage. When either is low, the stage switching judgment value remains low, and the control panel 7 continues to maintain the operation of the air heater 403, the blower 404, and the lifting drive structure 2. Further, the control panel 7 presets a first switching threshold and a second recovery threshold, with the first switching threshold being higher than the second recovery threshold. When the stage switching judgment value reaches or exceeds the first switching threshold for multiple consecutive sampling cycles, the control panel 7 determines that the current release stage has been completed to a level suitable for emission. At this time, the control window switch assembly 6 is activated to open the window, and the release output of the air heater 403 and the blower 404 is simultaneously reduced or stopped, allowing the room to enter the ventilation stage. After ventilation for a period of time, if the stage switching judgment value drops below the second recovery threshold, the control panel 7 determines that the current indoor high temperature and high humidity environment has deteriorated to a level where the release conditions need to be re-established. At this time, the control window switch assembly 6 is activated to close the window, and steps S2 and S3 are restarted. By setting the difference between the first switching threshold and the second recovery threshold, a delayed switching mechanism can be formed between the release phase and the ventilation phase, avoiding frequent opening and closing of windows and frequent starting and stopping of air heater 403 and blower 404, thereby improving the overall operational stability of the unit.

[0073] Furthermore, the specific execution method of step S4 is as follows:

[0074] Control panel 7 receives temperature and humidity values ​​output by temperature and humidity sensor group 9 at a fixed sampling period. Based on the changes between the current and previous sampling values, it determines whether the temperature and humidity changes are becoming more gradual. Simultaneously, it determines the degree of proximity of the current temperature to the target temperature and the current humidity to the target humidity. When indoor temperature and humidity rise rapidly but are not yet stable, although the temperature and humidity may gradually approach the target values, the changes are still significant. At this time, the release state value will not be too high, and control panel 7 continues to maintain the operation of air heater 403, blower 404, and lifting drive structure 2. When both indoor temperature and humidity are close to the target values ​​and the changes significantly decrease, the release state value increases, indicating that the indoor environment has transitioned from a rapid establishment phase to a more stable release phase.

[0075] Furthermore, the specific execution method of step S5 is as follows:

[0076] Control panel 7 only starts the maintenance timer when the current temperature and humidity are within the target temperature and humidity allowable fluctuation ranges. If either parameter deviates from the corresponding allowable fluctuation range, the maintenance timer is reset to zero or decays according to a preset ratio. With this setting, step S5 ensures that the decoration materials have an actual and effective release process in high temperature and high humidity environments, rather than making a switching judgment based solely on the momentary reaching of the threshold.

[0077] Furthermore, step S6 is executed as follows: the control panel 7 continuously generates a stage switching judgment value, and after the stage switching judgment value reaches the first switching threshold, it is still required to continuously meet the conditions within the preset judgment window before controlling the window opening and closing component 6 to open the window; during the ventilation stage, the control panel 7 continues to receive feedback data from the temperature and humidity sensor group 9, and determines whether to end ventilation based on whether the stage switching judgment value drops below the second recovery threshold. In this way, the control panel 7 can achieve a reasonable switch between the release-promoting stage and the ventilation stage by relying only on the existing temperature and humidity sensor group 9 and its own timing information, without adding a formaldehyde concentration sensor.

[0078] In this embodiment, a hierarchical judgment mechanism is introduced, comprising a release-promoting state value, a release-sufficiency value, and a stage switching judgment value. This allows the control panel 7 to no longer decide whether to open the window solely based on whether the temperature and humidity reach a threshold at a given moment. Instead, it comprehensively considers the establishment, trend, and duration of the current indoor hot and humid environment to determine whether to continue release promotion or switch to ventilation. This effectively avoids interrupting the establishment of a high-temperature and high-humidity environment by opening the window, preventing insufficient release promotion. It also avoids ineffective heating caused by continuing heating and humidification after the high-temperature and high-humidity environment has been sufficiently maintained.

[0079] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A formaldehyde removal device for building decoration, characterized in that: The device includes a chassis (1) and a control panel (7). The chassis (1) is provided with a spray box cover (3) that can spray hot air and moisture. The chassis (1) is provided with a lifting drive structure (2) for adjusting the height of the spray box cover (3). The spray box cover (3) is provided with a humidifier (5). A hot air supply assembly (4) is provided between the chassis (1) and the spray box cover (3). The chassis (1) is provided with several window opening and closing assemblies (6). The control panel (7) can control the opening and closing of the windows through the window opening and closing assemblies (6). The chassis (1) is provided with a temperature and humidity sensor group (9). The output end of the temperature and humidity sensor group (9) is electrically connected to the input end of the control panel (7). With the height adjustment of the ejection box cover (3) by the lifting drive structure (2), the ejection box cover (3) can eject humidified hot air at different heights.

2. The formaldehyde removal device for building decoration according to claim 1, characterized in that: The lifting drive structure (2) has two oppositely arranged components. The lifting drive structure (2) includes a diamond telescopic frame (205). The lower end of the diamond telescopic frame (205) is provided with a spacing adjustment structure for its expansion and contraction. A connecting rod (206) is connected between the upper ends of the diamond telescopic frames (205) of the two lifting drive structures (2). The lower side of the ejection box cover (3) is provided with two or more guide rails (208). The guide rails (208) are provided with guide grooves (209) for sliding with the connecting rods (206). The connecting rods (206) are provided with limiting rods (207) that can guide and limit the connecting rods (206) in the guide grooves (209).

3. The formaldehyde removal device for building decoration according to claim 2, characterized in that: The spacing adjustment structure includes an adjustment groove (202) opened in the housing (1). A first motor (201) is provided in the middle of the adjustment groove (202). The first motor (201) is a dual-axis motor. The two output shaft ends of the first motor (201) are respectively connected to lead screws (203). The two lead screws (203) have opposite rotation directions. Each lead screw (203) is threadedly connected to an adjustment slider (204). The adjustment slider (204) is slidably disposed in the adjustment groove (202). The adjustment slider (204) is hinged to the lower end of the diamond telescopic frame (205).

4. The formaldehyde removal device for building decoration according to claim 1, characterized in that: The spray box cover (3) has several spray nozzles (301) along its outer periphery. The spray box cover (3) is provided with a water inlet pipe (304) for adding water to the humidifier (5). The upper end of the water inlet pipe (304) extends to the upper surface of the spray box cover (3). The upper end of the water inlet pipe (304) is provided with a detachable sealing plug (302). The spray box cover (3) is provided with a ventilation groove (303) for communicating between the steam outlet of the humidifier (5) and the spray nozzles (301).

5. The formaldehyde removal device for building decoration according to claim 4, characterized in that: The hot air supply assembly (4) includes an air heater (403) and a blower (404) respectively installed on the chassis (1). The air outlet of the blower (404) is connected to the air inlet of the air heater (403). A spiral air guide pipe (401) is provided between the air heater (403) and the nozzle cover (3). The air outlet of the air heater (403) is connected to the spiral air guide pipe (401) through a second connecting conduit (405). The upper end of the spiral air guide pipe (401) is connected to the nozzle (301) through a first connecting conduit (402).

6. The formaldehyde removal device for building decoration according to claim 5, characterized in that: The upper side of the casing (1) is provided with an intermediate storage chamber (102) for storing the spiral air duct (401) and the humidifier (5). The casing (1) located on both sides of the intermediate storage chamber (102) is provided with a lateral storage chamber (103) for storing the diamond telescopic frame (205). The bottom side of the casing (1) is provided with several casters (101).

7. A formaldehyde removal device for building decoration according to claim 1 or 6, characterized in that: The switch window assembly (6) includes a base rod (601), on which a mounting plate (606) is provided. The base rod (601) is connected to the housing (1) via an electrical wire (602). A second motor (603) is provided on the base rod (601). One end of a rotating arm (604) is connected to the output shaft of the second motor (603). The other end of the rotating arm (604) is hinged to a window rod (605) via a hinge seat (607). The housing (1) is provided with a placement frame (8) for positioning the base rod (601). The placement frame (8) is made of elastic material. The base rod (601) can be stably locked inside the placement frame (8) and can be removed from the top of the placement frame (8).

8. The formaldehyde removal device for building decoration according to claim 1, characterized in that: The lower edge of the ejector box cover (3) is provided with a sealing gasket (305). When the lifting drive structure (2) drives the ejector box cover (3) to descend to the lowest height position, the ejector box cover (3) is sealed and abutted against the upper edge of the chassis (1) through the sealing gasket (305).

9. The formaldehyde removal device for building decoration according to claim 7, characterized in that: The temperature and humidity sensor group (9) includes a temperature sensor and a humidity sensor, which can collect indoor temperature and humidity data in real time and transmit them to the control panel (7). The control panel (7) integrates a touch screen and an alarm module. The control panel (7) can preset temperature and humidity thresholds and control the air heater (403) and the blower (404).

10. A method for removing formaldehyde from building decoration, employing the formaldehyde removal device for building decoration as described in any one of claims 1-9, characterized in that: Includes the following steps: S1: Move the whole machine to the interior of the building to be processed by using the casters (101) at the bottom of the chassis (1), and install the window switch assembly (6) in the corresponding position of the window; connect the control panel (7) to the real-time sampling signal of the temperature and humidity sensor group (9), and preset the target temperature, target humidity, allowable fluctuation range, minimum maintenance time, first switching threshold and second recovery threshold in the control panel (7); S2: The control panel (7) starts the blower (404) and air heater (403) of the hot air supply component (4). The air is sent into the air heater (403) through the blower (404) to form hot air. The hot air is delivered to the spray box cover (3) in sequence through the second connecting pipe (405), the spiral air guide pipe (401), and the first connecting pipe (402). At the same time, the humidifier (5) on the spray box cover (3) is started. The moisture is mixed with the hot air through the ventilation slot (303) and then sprayed into the room through the spray nozzle (301) on the spray box cover (3) to create a high temperature and high humidity environment that accelerates the release of formaldehyde. S3: The control panel (7) controls the first motor (201) of the lifting drive structure (2) to drive two screws (203) with opposite rotation directions to rotate, which drives the adjusting slider (204) to move along the adjusting groove (202), thereby realizing the extension and retraction of the diamond telescopic frame (205), thereby driving the spray box cover (3) to rise and fall, and circulate the hot and humid airflow to different height areas in the room to ensure uniform release throughout the area; S4: During the execution of S2 and S3, the control panel (7) continuously reads the current temperature and humidity of the temperature and humidity sensor group (9) at a fixed cycle; combined with the target temperature and humidity and the rate of change of temperature and humidity within the continuous sampling cycle, the release state value is calculated to determine whether the indoor hot and humid environment has entered the stable release stage from the rapid establishment stage; the release state value is met only when the temperature and humidity are close to the target value and the change tends to be gradual. S5: When the temperature and humidity enter the preset target range, the control panel (7) does not open the window immediately, but starts the maintenance timer only when the temperature and humidity are within the allowable fluctuation range. If any parameter deviates, the timing is reset or decayed; combined with the proximity of temperature and humidity to the target value and the duration of continuous and stable maintenance, the sufficient value of release is calculated to determine whether the release process has reached the level that can be ventilated and discharged. S6: The stage switching and cycle operation control panel (7) weightedly couples the release status value and the release sufficiency value to obtain the stage switching judgment value; When the judgment value reaches the first switching threshold for multiple consecutive cycles: the second motor (603) of the control window switch assembly (6) drives the rotating arm (604) and the window connecting rod (605) to move, automatically opening the window for ventilation, and simultaneously reducing or stopping the output of the air heater (403) and the blower (404); When the judgment value drops below the second recovery threshold: control the window switch assembly (6) to close the window, and re-execute S2 and S3 to cycle through the release, ventilation and release of formaldehyde in a closed loop.

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