Formaldehyde purification device, control method, control device and air treatment equipment

Abstract

The invention provides a formaldehyde purification device, a control method, a control device and air treatment equipment, relates to the technical field of air purification, can realize formaldehyde purification, can realize visualization of a purification process and a purification result, enables a user to feel the purification process of indoor formaldehyde, and has the advantages of high reliability and high credibility. The formaldehyde purification device comprises a fan, a formaldehyde purification module, a color development module and a regeneration module, the fan is arranged to generate airflow flowing through the formaldehyde purification module and the color developing module; the formaldehyde purification module is arranged to purify formaldehyde in the air flow; the color developing module is arranged to react with formaldehyde in the airflow so as to display an indicating color; and the regeneration module is set to perform regeneration treatment on the color developing module, so that the indicating color disappears.

Description

Technical Field

[0001] The present application relates to the technical field of air purification, and more specifically, to a formaldehyde purification device, a control method, a control device and an air treatment equipment. Background Art

[0002] At present, the existing formaldehyde purification products and indoor formaldehyde concentration detection are mainly based on sensor display values ​​or light color prompts (red, yellow, green), reminding users that the indoor formaldehyde exceeds the standard or the formaldehyde has been purified to a safe state. However, the detection results of this method are somewhat different from the actual situation, and are easily disturbed by other odors in the environment, resulting in false prompts, so it is less credible to consumers. Summary of the invention

[0003] The purpose of the present application is to provide a formaldehyde purification device, a control method, a control device and an air treatment equipment, which can realize formaldehyde purification, and the purification process and purification results can be visualized, so that users can feel the purification process of indoor formaldehyde, and have the advantages of high reliability and high credibility.

[0004] An embodiment of the present application provides a formaldehyde purification device, comprising: a fan, a formaldehyde purification module, a color development module and a regeneration module; the fan is configured to generate an airflow flowing through the formaldehyde purification module and the color development module; the formaldehyde purification module is configured to purify the formaldehyde in the airflow; the color development module is configured to react with the formaldehyde in the airflow to display an indication color; the regeneration module is configured to regenerate the color development module to make the indication color disappear.

[0005] In this way, when the fan is started, the airflow flows to the formaldehyde purification module and the color development module. When there is no formaldehyde in the airflow, the color development module will not display the indication color, so the user can know that there is no need for purification. When there is formaldehyde in the airflow, the color development module will react with the formaldehyde to display the indication color to let the customer know. The formaldehyde in the airflow can be purified by the formaldehyde purification module to reduce the formaldehyde content in the airflow. After a period of purification, the color development module can be regenerated by the regeneration module to make the indication color of the color development module disappear, and then the regeneration module is turned off. When the airflow continues to flow to the color development module, it can be observed again whether the color development module is colored. If the color development module no longer displays the indication color, it indicates that the formaldehyde in the air has been purified; if the color development module displays the indication color again, it indicates that the formaldehyde in the air has not been purified, and the fan continues to run to continue the purification process. After a period of time, the color development module can be regenerated by the regeneration module again, and the color development module can be observed again to see if it is colored. This cycle repeats until the color development module no longer displays the indication color, indicating that the formaldehyde in the air has been purified.

[0006] Therefore, the formaldehyde purification device provided in the embodiment of the present application can purify formaldehyde through the formaldehyde purification module, can display whether there is formaldehyde in the air through the color display module, and can regenerate the color display module through the regeneration module, so that the color display module can repeatedly detect formaldehyde during the formaldehyde purification process until the formaldehyde purification is completed, thereby realizing the visualization of the formaldehyde purification process and purification results, allowing users to intuitively feel the indoor formaldehyde purification process, and has the advantages of high reliability and high credibility.

[0007] The present application also provides a control method, which is applied to the formaldehyde purification device described in the above embodiment. The control method includes:

[0008] Controlling the fan to run so that the airflow flows through the formaldehyde purification module and the color development module;

[0009] confirming whether the color display module displays an indicated color;

[0010] Based on confirming that the color display module does not display the indication color, controlling the fan to be turned off or issuing a shutdown reminder message for reminding to turn off the fan;

[0011] Based on confirming that the color display module displays the indicated color, controlling the fan to continue running;

[0012] Based on the first time period of continuous operation of the fan, the regeneration module is started to regenerate the color display module so that the indicating color disappears, and then the regeneration module is turned off.

[0013] An embodiment of the present application further provides a control device, including a processor and a memory storing a computer program, wherein the processor implements the steps of the control method described in the above embodiment when executing the computer program.

[0014] An embodiment of the present application also provides an air treatment device, comprising the formaldehyde purification device described in any one of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0016] Figure 1 A schematic diagram of the structure of a formaldehyde purification device provided in some embodiments of the present application;

[0017] Figure 2 A schematic diagram of the exploded structure of a formaldehyde purification device provided in some embodiments of the present application;

[0018] Figure 3 for Figure 2 The three-dimensional structural schematic diagram of the formaldehyde purification device shown;

[0019] Figure 4 A flow chart of a control method provided in some embodiments of the present application;

[0020] Figure 5 A schematic diagram of the principles of the control method provided for some embodiments of the present application.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1 fan, 2 formaldehyde purification module, 21 first frame, 22 purification module, 3 color development module, 31 second frame, 32 color developer module, 4 regeneration module, 41 third frame, 42 heating element, 43 power connection module. DETAILED DESCRIPTION

[0023] The principles and features of the present application are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present application and are not used to limit the scope of the present application.

[0024] like Figures 1 to 3 As shown, an embodiment of the present application provides a formaldehyde purification device, including: a fan 1, a formaldehyde purification module 2, a color development module 3 and a regeneration module 4.

[0025] The fan 1 is configured to generate an airflow that flows through the formaldehyde purification module 2 and the color development module 3 .

[0026] The formaldehyde purification module 2 is configured to purify formaldehyde in the airflow.

[0027] The color development module 3 is configured to react with formaldehyde in the air flow to display an indicating color.

[0028] The regeneration module 4 is configured to perform a regeneration process on the color development module 3 to make the indicated color disappear.

[0029] In this way, when the fan 1 is started, the airflow flows to the formaldehyde purification module 2 and the color development module 3. When the airflow does not contain formaldehyde, the color development module 3 will not display the indication color, so the user can know that no purification is required. When the airflow contains formaldehyde, the color development module 3 will react with the formaldehyde to display the indication color, so that the customer knows. The formaldehyde in the airflow can be purified by the formaldehyde purification module 2 to reduce the formaldehyde content in the airflow. After a period of purification, the color development module 3 can be regenerated by the regeneration module 4 to make the indication color of the color development module 3 disappear, and then the regeneration module 4 is turned off. When the airflow continues to flow to the color development module 3, it can be observed again whether the color development module 3 is colored. If the color development module 3 no longer displays the indication color, it indicates that the formaldehyde in the air has been purified; if the color development module 3 displays the indication color again, it indicates that the formaldehyde in the air has not been purified, and the fan 1 continues to run and continue the purification process. After a period of time, the color development module 3 can be regenerated by the regeneration module 4 again, and the color development module 3 can be observed again to see if it is colored. This cycle repeats until the color display module 3 no longer displays the indicating color, indicating that the formaldehyde in the air has been purified.

[0030] Therefore, the formaldehyde purification device provided in the embodiment of the present application can purify formaldehyde through the formaldehyde purification module 2, can display whether there is formaldehyde in the air through the color display module 3, and can regenerate the color display module 3 through the regeneration module 4, so that the color display module 3 can repeatedly detect formaldehyde during the formaldehyde purification process until the formaldehyde purification is completed, thereby realizing the visualization of the formaldehyde purification process and purification results, allowing users to intuitively feel the indoor formaldehyde purification process, and has the advantages of high reliability and high credibility.

[0031] In some exemplary embodiments, Figure 2 As shown, the formaldehyde purification module 2 includes a first frame 21 and a purification module 22 installed on the first frame 21. The purification module 22 includes a first carrier provided with an air passage and an adsorbent and / or a catalyst loaded on the first carrier.

[0032] The first frame 21 can support and protect the purification module 22. The purification module 22 purifies formaldehyde. The first carrier can be, but is not limited to, a honeycomb structure, such as an aluminum honeycomb, a paper honeycomb or other porous materials that can pass air. The adsorbent can adsorb formaldehyde to reduce the formaldehyde concentration in the air. The catalyst can react with formaldehyde to generate harmless substances to reduce the formaldehyde concentration in the air. The types of adsorbents are not limited, such as activated carbon, molecular sieves, activated alumina, etc. The types of catalysts are not limited, such as titanium dioxide, aluminum oxide, zinc oxide, silver-based catalysts, etc. Some adsorbents can also have a catalytic effect, that is, adsorb catalysts.

[0033] In some exemplary embodiments, the fan 1 includes a fan bracket and multiple fans installed on the fan bracket. The multiple fans are arranged corresponding to the formaldehyde purification module 2, which is beneficial to increasing the air volume and improving the uniformity of air flow through the formaldehyde purification module 2, thereby improving the purification efficiency.

[0034] In some exemplary embodiments, Figure 2 As shown, the color development module 3 includes a second frame 31 and a color developer module 32 installed on the second frame 31. The color developer module 32 includes a second carrier provided with an air passage and a color development material provided on the second carrier.

[0035] The second frame 31 supports and protects the developer module 32. The developer module 32 plays a role in developing colors. The second carrier may be, but is not limited to, a honeycomb structure, such as an aluminum honeycomb, a paper honeycomb, or other porous materials that can pass air, or other types of filter screens.

[0036] The color developing material can be set as a powder color developing material, and the powder color developing material is loaded on the second carrier. The powder color developing material can be fixed on the surface of the second carrier to form an integrated structure with the second carrier. This solution has a small wind resistance.

[0037] Alternatively, the coloring material can be provided as a granular coloring material (such as a spherical coloring material), and the granular coloring material is filled in the second carrier. The granular coloring material can be prepared separately and then filled in the second carrier, and the second carrier is a separate structure. This solution facilitates adjusting the filling amount of the granular coloring material as needed.

[0038] The depth of the first frame 21 can be appropriately larger so that the color development module 3 can be accommodated in the first frame 21. This can make the structure of the formaldehyde purification device more regular and facilitate packaging, transportation and installation.

[0039] In some embodiments, the color development material includes a substrate and a color development substance loaded on the substrate. The substrate includes at least one of molecular sieve, white carbon black, and titanium oxide. Molecular sieve, white carbon black, and titanium oxide are all light-colored materials, which are not likely to affect the color change of the color development module 3. These light-colored materials can be made into porous powder materials or small balls, so that the color development material can be a powder color development material or a granular color development material.

[0040] The color developing substance includes a mixture of an amine compound and a phenolphthalein reagent. The amine compound is a formaldehyde scavenger, and the phenolphthalein reagent is a color indicator. Formaldehyde can react with the amine compound to generate a Schiff base, and the Schiff base can react with the phenolphthalein reagent to change color, so that the color developing module 3 displays a red indicator color.

[0041] The color-developing substance can be loaded on the substrate by soaking and drying, etc. The amine compound can be ethylamine, propylamine, etc.

[0042] Certainly, color developing material is not limited to the mixture of amine compound and phenolphthalein reagent, can also be other color developing materials, as long as can show indication color with formaldehyde reaction, and can realize regeneration under the process of regeneration module.Such as, formaldehyde capture agent can also be the compound containing ammonium root or amino, such as one or more in bicarbonate of ammonium, ammonium halide, alkyl ammonium halide, ammonium sulfate, ammonium nitrate, alkyl ammonium sulfate, alkyl benzene ammonium sulfonate, ethylene urea, guanidine carbonate, tetraethylene pentamine.Color indicator can also include one or more in phenol yellow purple, meta-cresol purple, cresol red, phenol red, neutral red, catechol purple, litmus, thymolphthalein, bromothymol blue, alizarin yellow R, indigo carmine, alizarin red S, malachite green, dardan yellow.

[0043] In some exemplary embodiments, Figure 2 As shown, the regeneration module 4 includes a third frame 41, a heating element 42 mounted on the third frame 41, and a power connection module 43 electrically connected to the heating element 42. The heating element 42 is configured to heat the color development module 3 so that the color development module 3 decomposes formaldehyde to achieve regeneration.

[0044] The third frame 41 supports and protects the heating element 42. The power connection module 43 can be connected to a power source to supply power to the heating element 42. The heating element 42 can output heat energy to achieve a regeneration effect on the color development module 3.

[0045] The heated air passes through the Schiff base, which can decompose the Schiff base into formaldehyde and amine substances, so that the indicating color displayed by the color development module 3 disappears, thereby achieving the regeneration of the color development module 3.

[0046] The type of the heating element 42 is not limited. Figure 2 As shown, the heating element 42 is a heating net, which is convenient for uniform heating with the color development module 3 and also convenient for air flow.

[0047] The depth of the first frame 21 may be appropriately larger so that the regeneration module 4 can be accommodated in the first frame 21 . This can make the structure of the formaldehyde purification device more regular and facilitate packaging, transportation and installation.

[0048] In some exemplary embodiments, Figure 1 As shown, the regeneration module 4, the color development module 3, and the formaldehyde purification module 2 are arranged in sequence along the flow direction of the airflow.

[0049] In this way, the air heated by the regeneration module 4 can flow to the color development module 3, thereby heating the color development module 3 to achieve regeneration. The formaldehyde generated by the decomposition of the color development module 3 can flow to the formaldehyde purification module 2 to be purified, which also facilitates the color development module 3 to fully develop color.

[0050] In some exemplary embodiments, Figures 1 to 3 As shown, the air flow area of ​​the formaldehyde purification module 2 is larger than that of the color development module 3, and the air flow area of ​​the formaldehyde purification module 2 is larger than that of the regeneration module 4. The air flow area of ​​the color development module 3 and the air flow area of ​​the regeneration module 4 can be substantially equal.

[0051] The formaldehyde purification module 2 has a large air flow area, which is convenient for efficiently purifying formaldehyde. The color development module 3 and the regeneration module 4 have small air flow areas, which can reduce wind resistance.

[0052] In some embodiments, Figures 1 to 3 As shown, the orthographic projections of the color development module 3 and the regeneration module 4 on the air inlet end face of the formaldehyde purification module 2 are located at the edge of the air inlet end face of the formaldehyde purification module 2. This is beneficial to reducing the wind resistance generated by the color development module 3 and the regeneration module 4 to the formaldehyde purification module 2, and is beneficial to improving the purification efficiency of the formaldehyde purification module 2.

[0053] The air inlet end surface of the formaldehyde purification module may be a plane where the air inlet end of the first frame 21 is located.

[0054] Of course, the positions of the color development module 3 and the regeneration module 4 are not limited to the above scheme, and may also be other schemes. For example, the color development module 3 may also be arranged side by side with the formaldehyde purification module 2.

[0055] The present application embodiment provides a control method, which is applied to the formaldehyde purification device of any one of the above embodiments. Figure 4 As shown, the control method includes:

[0056] Step S202: controlling the fan to run so that the airflow flows through the formaldehyde purification module and the color development module;

[0057] Step S204: confirm whether the color display module displays the indicated color;

[0058] Step S206: based on confirming that the color display module does not display the indication color, controlling the fan to be turned off or issuing a shutdown reminder message for reminding to turn off the fan;

[0059] Step S208: Based on the confirmation that the color display module displays the indicated color, the fan is controlled to continue to run;

[0060] Step S210: based on the first time period of continuous operation of the fan, the regeneration module is started to regenerate the color display module so that the indicated color disappears, and then the regeneration module is turned off.

[0061] The control method provided in the embodiment of the present application can achieve formaldehyde purification through the formaldehyde purification module 2, can display whether there is formaldehyde in the air through the color development module 3, and can regenerate the color development module 3 through the regeneration module 4, so that the color development module 3 can repeatedly detect formaldehyde during the formaldehyde purification process until the formaldehyde purification is completed, thereby realizing the visualization of the formaldehyde purification process and purification results, allowing users to intuitively feel the indoor formaldehyde purification process, and having the advantages of high reliability and high credibility. Therefore, the present application can visualize the formaldehyde concentration change through the formaldehyde purification device and program control during the formaldehyde purification process, which is equivalent to realizing real-time detection of formaldehyde concentration, and has the characteristics of high reliability and credibility, so that users can feel the indoor formaldehyde purification process and have more trust in the formaldehyde purification device on the product.

[0062] When it is confirmed that the color display module 3 does not display the indicated color, the fan 1 can be directly turned off automatically, or a shutdown reminder message can be issued to remind the user to manually turn off the fan 1.

[0063] In some embodiments, Figure 1 As shown, the control method also includes:

[0064] After the regeneration module 4 is turned off, the process returns to the step of controlling the fan 1 to make the air flow pass through the formaldehyde purification module 2 and the color development module 3 .

[0065] In this way, when the fan 1 is started, the airflow flows to the formaldehyde purification module 2 and the color development module 3. When the airflow does not contain formaldehyde, the color development module 3 will not display the indication color, so the user can know that no purification is required. When the airflow contains formaldehyde, the color development module 3 will react with the formaldehyde to display the indication color, so that the customer knows. The formaldehyde in the airflow can be purified by the formaldehyde purification module 2 to reduce the formaldehyde content in the airflow. After a period of purification, the color development module 3 can be regenerated by the regeneration module 4 to make the indication color of the color development module 3 disappear, and then the regeneration module 4 is turned off. When the airflow continues to flow to the color development module 3, it can be observed again whether the color development module 3 is colored. If the color development module 3 no longer displays the indication color, it indicates that the formaldehyde in the air has been purified; if the color development module 3 displays the indication color again, it indicates that the formaldehyde in the air has not been purified, and the fan 1 continues to run and continue the purification process. After a period of time, the color development module 3 can be regenerated by the regeneration module 4 again, and the color development module 3 can be observed again to see if it is colored. This cycle repeats until the color display module 3 no longer displays the indicating color, indicating that the formaldehyde in the air has been purified.

[0066] In some exemplary embodiments, controlling the fan 1 to operate includes controlling the fan 1 to operate at a first wind speed. The first wind speed may be, but is not limited to, full speed (e.g., Figure 5 As shown), in order to improve the purification efficiency of formaldehyde.

[0067] During the process of starting the regeneration module 4 to regenerate the color development module 3, the fan 1 is controlled to be reduced to the second wind speed, and the regeneration module 4 is controlled to be shut down after running for the second set time.

[0068] like Figure 5 As shown, the second wind speed may be, but is not limited to, less than or equal to 0.1 m / s. In this way, during the regeneration process of the color module 3, the heat of the regeneration module 4 can fully act on the color module 3, which is beneficial to improve the regeneration rate of the color module 3. The second set time length may be, but is not limited to, 5 minutes. The first set time length may be, but is not limited to, 15 minutes.

[0069] In some exemplary embodiments, confirming whether the color display module 3 displays the indication color includes: confirming whether the color display module 3 displays the indication color according to external input information.

[0070] Of course, it is also possible not to confirm whether the display module indicates the color display according to the external input information. For example, it is possible to confirm whether the color display module 3 displays the indicated color according to the detection result of the detection device. The detection device can be a camera, which compares the photographed photo with the preset photo to confirm whether the color display module 3 displays the indicated color.

[0071] In some embodiments, confirming whether the color display module 3 displays the indicated color according to the external input information includes:

[0072] Sending color display confirmation information, the color display confirmation information is configured to allow the user to input confirmation information on whether the color display module 3 displays the indicated color;

[0073] According to the confirmation information input by the user, it is confirmed whether the color display module 3 displays the indicated color.

[0074] In this way, whether the color display module 3 indicates a color can be determined based on user feedback, which is conducive to simplifying the electronic control program, allowing users to participate in the formaldehyde purification process, making it easier for users to understand the formaldehyde purification process and purification effect, and helping to improve users' trust in the formaldehyde purification device.

[0075] The form of the color confirmation information is not limited, for example, it can be text information, sound information, or screen information. The form of the user inputting the confirmation information is also not limited, and it can be key input, click input, voice input, gesture input, etc.

[0076] For example: the formaldehyde purification device can provide the option of whether to display the indication color in the form of text for the user to choose, and the user only needs to press a button or click to select "yes" or "no". Alternatively, the formaldehyde purification device can provide the option of whether to display the indication color in the form of voice for the user to choose, and the user only needs to answer "yes" or "no" by voice. Alternatively, the formaldehyde purification device can provide the option of whether to display the indication color in the form of a picture (a picture with color and a picture without color) for the user to choose, and the user only needs to select the corresponding picture.

[0077] In some embodiments, the control method further comprises:

[0078] Before confirming whether the color display module 3 displays the indicated color, a color display reminder message is issued, and the color display reminder message is configured to remind the user to observe whether the color display module 3 displays the indicated color.

[0079] This can remind the user to observe the status of the color display module 3 in time, so that the user knows the formaldehyde purification process and purification effect; it is also beneficial to prevent the user from forgetting to observe whether the color display module 3 indicates the color, resulting in the process being unable to continue, which is beneficial to improving the user's experience.

[0080] Among them, the color reminder information can be sent in the form of light signals, sound signals, picture signals, etc.

[0081] An embodiment of the present application also provides a control device, including a processor and a memory storing a computer program. When the processor executes the computer program, the steps of the control method in any of the above embodiments are implemented, and thus all the above-mentioned beneficial effects are achieved, which will not be repeated here.

[0082] The processor may be an integrated circuit chip with signal processing capabilities. The above-mentioned processor may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present invention may be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0083] The embodiment of the present application also provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the steps of the control method in any of the above embodiments are implemented, thereby having all the above-mentioned beneficial effects, which will not be repeated here.

[0084] The embodiment of the present application also provides an air treatment device, including the formaldehyde purification device of any one of the above embodiments, and thus has all the above-mentioned beneficial effects, which will not be repeated here.

[0085] There is no restriction on the types of air treatment equipment, such as air conditioners, air purifiers, humidifiers, dehumidifiers and other equipment with air treatment functions.

[0086] In some exemplary embodiments, the air handling device is provided with an observation window, and the color display module is arranged corresponding to the observation window, so that the user can observe whether the color display module displays color. The observation window can be arranged as a transparent window.

[0087] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0088] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0089] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0090] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0091] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0092] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

[0093] In any one or more of the above exemplary embodiments, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored on a computer-readable medium or transmitted via a computer-readable medium as one or more instructions or codes, and executed by a hardware-based processing unit. A computer-readable medium may include a computer-readable storage medium corresponding to a tangible medium such as a data storage medium, or a communication medium that facilitates a computer program, such as any medium transmitted from one place to another according to a communication protocol. In this way, a computer-readable medium may generally correspond to a non-temporary tangible computer-readable storage medium or a communication medium such as a signal or carrier wave. A data storage medium may be any available medium that can be accessed by one or more computers or one or more processors to retrieve instructions, codes, and / or data structures for implementing the technology described in the present disclosure. A computer program product may include a computer-readable medium.

[0094] By way of example and not limitation, such computer-readable storage media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage, flash memory, or any other medium that can be used to store the desired program code in the form of instructions or data structures and can be accessed by a computer. Moreover, any connection may also be referred to as a computer-readable medium. For example, if instructions are transmitted from a website, server or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio and microwave are included in the definition of medium. However, it should be understood that computer-readable storage media and data storage media do not include connections, carrier waves, signals, or other transient (transient) media, but are directed to non-transient tangible storage media. As used herein, disks and optical disks include compact disks (CDs), laser disks, optical disks, digital versatile disks (DVDs), floppy disks, or Blu-ray disks, etc., where disks typically reproduce data magnetically, while optical disks use lasers to reproduce data optically. Combinations of the above should also be included within the scope of computer-readable media.

[0095] For example, instructions may be executed by one or more processors such as one or more digital signal processors (DSPs), general purpose microprocessors, application specific integrated circuits (ASICs), field programmable logic arrays (FPGAs), or other equivalent integrated or discrete logic circuits. Thus, the term "processor" as used herein may refer to any of the above structures or any other structures suitable for implementing the techniques described herein. Additionally, in some aspects, the functionality described herein may be provided within dedicated hardware and / or software modules configured for encoding and decoding, or incorporated in a combined codec. Also, the techniques may be fully implemented in one or more circuits or logic elements.

[0096] The technical solutions of the embodiments of the present disclosure can be implemented in a wide variety of devices or equipment, including wireless mobile phones, integrated circuits (ICs) or a group of ICs (e.g., chipsets). Various components, modules or units are described in the embodiments of the present disclosure to emphasize the functional aspects of the devices configured to perform the described techniques, but they do not necessarily need to be implemented by different hardware units. Instead, as described above, the various units can be combined in a codec hardware unit or provided by a collection of interoperable hardware units (including one or more processors as described above) in combination with suitable software and / or firmware.

Claims

1. A formaldehyde purification device, characterized in that: include: Fan, formaldehyde purification module, color development module and regeneration module; The fan is configured to generate an airflow passing through the formaldehyde purification module and the color development module; The formaldehyde purification module is configured to purify the formaldehyde in the airflow; The color development module is configured to react with formaldehyde in the airflow to display an indicating color; The regeneration module is configured to perform a regeneration process on the color development module to make the indication color disappear.

2. The formaldehyde purification device according to claim 1, characterized in that: The formaldehyde purification module includes a first frame and a purification module installed on the first frame. The purification module includes a first carrier provided with an air passage and an adsorbent and / or a catalyst loaded on the first carrier.

3. The formaldehyde purification device according to claim 1 or 2, characterized in that: The color development module includes a second frame and a color developer module installed on the second frame. The color developer module includes a second carrier provided with an air passage and a color development material provided on the second carrier.

4. The formaldehyde purification device according to claim 3, characterized in that: The color developing material is configured as a powder color developing material, and the powder color developing material is loaded on the second carrier; or, The color developing material is configured as a granular color developing material, and the granular color developing material is filled in the second carrier.

5. The formaldehyde purification device according to claim 3, characterized in that: The color-developing material comprises a substrate and a color-developing substance loaded on the substrate; The substrate includes at least one of molecular sieve, white carbon black and titanium oxide; the color developing substance includes a mixture of amine compounds and phenolphthalein reagent.

6. The formaldehyde purification device according to claim 1 or 2, characterized in that: The regeneration module includes a third frame, a heating element installed on the third frame, and a power connection module electrically connected to the heating element. The heating element is configured to heat the color development module so that the color development module decomposes formaldehyde to achieve regeneration.

7. The formaldehyde purification device according to claim 1 or 2, characterized in that: The regeneration module, the color development module, and the formaldehyde purification module are arranged in sequence along the flow direction of the airflow.

8. The formaldehyde purification device according to claim 1 or 2, characterized in that: The air flow area of ​​the formaldehyde purification module is larger than the air flow area of ​​the color development module, and the air flow area of ​​the formaldehyde purification module is larger than the air flow area of ​​the regeneration module.

9. The formaldehyde purification device according to claim 8, characterized in that: The orthographic projections of the color development module and the regeneration module on the air inlet end surface of the formaldehyde purification module are located at the edge of the air inlet end surface of the formaldehyde purification module.

10. A control method, characterized in that: Applicable to the formaldehyde purification device according to any one of claims 1 to 9, the control method comprises: Controlling the fan to run so that the airflow flows through the formaldehyde purification module and the color development module; confirming whether the color display module displays an indicated color; Based on confirming that the color display module does not display the indication color, controlling the fan to be turned off or issuing a shutdown reminder message for reminding to turn off the fan; Based on confirming that the color display module displays the indicated color, controlling the fan to continue running; Based on the first time period of continuous operation of the fan, the regeneration module is started to regenerate the color display module so that the indicating color disappears, and then the regeneration module is turned off.

11. The control method according to claim 10, characterized in that: Also includes: After the regeneration module is turned off, the step of controlling the fan to operate so that the airflow flows through the formaldehyde purification module and the color development module is returned to be executed.

12. The control method according to claim 10 or 11, characterized in that: The confirming whether the color display module displays the indication color includes: Determine whether the color display module displays an indicated color according to external input information.

13. The control method according to claim 12, characterized in that: The step of confirming whether the color display module displays the indicated color according to the external input information includes: Sending color display confirmation information, wherein the color display confirmation information is configured to allow the user to input confirmation information of whether the color display module displays an indicated color; According to the confirmation information input by the user, it is confirmed whether the color display module displays the indicated color.

14. The control method according to claim 10 or 11, characterized in that: Also includes: Before confirming whether the color display module displays the indicated color, a color display reminder message is issued, and the color display reminder message is configured to remind the user to observe whether the color display module displays the indicated color.

15. The control method according to claim 10 or 11, characterized in that: The controlling the operation of the fan includes controlling the fan to operate at a first wind speed; During the process of starting the regeneration module to regenerate the color development module, the fan is controlled to be reduced to a second wind speed, and the regeneration module is controlled to be shut down after running for a second set time.

16. A control device, characterized in that: The system comprises a processor and a memory storing a computer program, wherein when the processor executes the computer program, the steps of the control method according to any one of claims 10 to 15 are implemented.

17. An air treatment device, characterized in that: A formaldehyde purification device comprising any one of claims 1 to 9.

Images