Indoor air efficient purification device based on multi-stage adsorption

By adopting multi-stage adsorption technology in the indoor air purification device and using adsorption modules and heating modules to treat carbon dioxide in the air, the problem of difficulty in dealing with high concentrations of carbon dioxide in traditional air conditioning systems is solved, and efficient purification of indoor air and improving air quality is achieved.

CN222937966UActive Publication Date: 2025-06-03DECARBON TECH (SHENZHEN) CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202421700968.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-17
Publication Date
2025-06-03
Estimated Expiration
2034-07-17

AI Technical Summary

Technical Problem

Traditional air conditioning systems consume a lot of electricity in the process of regulating the indoor temperature, resulting in an increase in carbon dioxide emissions and it is difficult to effectively deal with high concentrations of carbon dioxide in the room, affecting human health and quality of life.

Method used

An efficient indoor air purification device based on multi-stage adsorption is designed, including a fan, a multi-way valve and a gas treatment module. The gas treatment module includes a shell, a heating module and multiple adsorption modules. The adsorbent built into the adsorbent module is adsorbed and desorbed carbon dioxide, and efficient indoor air is achieved.

Benefits of technology

The device can quickly absorb carbon dioxide in the air, reduce indoor carbon dioxide concentration, improve indoor air quality, and adapt to various indoor environments due to its modular design, easy to install and maintain.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222937966U_ABST
    Figure CN222937966U_ABST
Patent Text Reader

Abstract

The utility model provides an efficient indoor air purification device based on multi-stage adsorption, which comprises a fan, a multi-way valve and a gas treatment module, and the gas treatment module comprises a shell, a heating module and a plurality of adsorption modules; an air inlet and an air outlet are formed in the shell, the air inlet is communicated with the interior, and the air outlet is communicated with the interior and the exterior through a multi-way valve; the fan is used for extracting indoor air to adsorb carbon dioxide; or extracting indoor air or outdoor air to desorb carbon dioxide; an adsorbent is arranged in the adsorption module, carbon dioxide in indoor air is adsorbed, and carbon dioxide in the adsorbent is desorbed under the heating condition; the multi-way valve is located at the air outlet. According to the scheme, modular design is adopted, the adsorption modules are integrated into the gas treatment module, carbon dioxide in air can be adsorbed at a higher speed, efficient purification of indoor air is achieved, and the air purifier can be flexibly increased or decreased according to different space sizes and requirements, is easy to install and maintain and adapts to various indoor environments.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the field of indoor air purification, and in particular, to an efficient indoor air purification device based on multi-stage adsorption. Background Technique

[0002] With the rapid growth of human energy consumption, the emissions of CO 2 have also increased sharply, and the resulting global warming has also had a huge impact on the production and life of many countries. In order to slow down global warming, countries have successively formulated medium- and long-term CO 2 emission reduction plans, and carbon capture, utilization and storage (CCUS) is one of the key technologies for reducing carbon emissions.

[0003] In the process of carbon capture, there are two steps: adsorption and desorption of CO 2 . Adsorption refers to using adsorbents (such as liquid amines, solid amines, calcium-based adsorbents, etc.) to adsorb carbon dioxide from flue gas or air. The adsorption process is usually carried out at lower pressure and higher temperature. After the adsorbent is heated to a certain temperature, it contacts the flue gas or air to adsorb carbon dioxide. Desorption refers to desorbing and removing the carbon dioxide that has been adsorbed on the adsorbent. After the desorbed carbon dioxide is compressed and refrigerated, it is finally liquefied and stored. This process is usually called carbon dioxide stripping or regeneration.

[0004] In the process of adjusting the indoor temperature, traditional air conditioning systems consume a large amount of electric power resources, indirectly resulting in a large amount of carbon dioxide emissions. Moreover, existing air conditioning systems often have difficulty effectively dealing with high concentrations of carbon dioxide indoors, especially in crowded or poorly ventilated environments. High concentrations of carbon dioxide have been proven to affect human health, causing symptoms such as dullness, dizziness, and inattention, reducing work efficiency and quality of life. Although introducing fresh air is a way to improve indoor air quality, in many cases, such as in household environments or other scenarios with strict air quality requirements, a large amount of air exchange will significantly increase the energy consumption of the air conditioning system. Content of the Utility Model

[0005] Based on the problems existing in the prior art, the utility model provides an efficient indoor air purification device based on multi-stage adsorption to solve at least one of the above technical problems. The specific solutions are as follows:

[0006] An efficient indoor air purification device based on multi-stage adsorption includes a fan, a multi-way valve, and a gas treatment module. The gas treatment module includes a housing, at least one heating module, and a plurality of adsorption modules located in the housing;

[0007] The heating module is used to heat each of the adsorption modules;

[0008] At least one air inlet and at least one air outlet are provided on the housing. The air inlet communicates with the interior, and the air outlet communicates with the interior and the exterior respectively through the multi-way valve.

[0009] The blower is located at the air inlet and / or the air outlet, and is used to extract indoor air into each adsorption module for carbon dioxide adsorption; or, extract indoor air or outdoor air into the adsorption module for carbon dioxide desorption.

[0010] The adsorption module is internally provided with an adsorbent, and is used to adsorb carbon dioxide in indoor air through the adsorbent to obtain low-carbon air, and desorb carbon dioxide in the adsorbent under heating conditions.

[0011] The multi-way valve is located at the air outlet, and is used to discharge the low-carbon air into the interior or discharge the carbon dioxide desorbed from the adsorption module to the exterior under the action of the wind force of the blower.

[0012] In some specific embodiments, a control module is further included, and the control module is electrically connected to the heating module, and / or the blower, and / or the adsorption module, and / or the multi-way valve.

[0013] In some specific embodiments, the adsorption modules are arranged in a stacked manner in the housing, and there is a gap between the adsorption modules.

[0014] In some specific embodiments, the heating module is connected to the housing and is used to transfer heat through the housing.

[0015] And / or, the heating module is located inside the housing and is close to the adsorption module.

[0016] And / or, the heating module further includes heating tubes extending into the adsorption module to heat the interior of the adsorption module.

[0017] In some specific embodiments, a skeleton is provided on the adsorption module, and the adsorbent is coated, impregnated or filled on the skeleton.

[0018] In some specific embodiments, the air inlet, the air outlet and the adsorption modules are staggered.

[0019] The air inlet is located in the area between two adjacent adsorption modules, and the air outlet is located in the area outside two adjacent adsorption modules.

[0020] In some specific embodiments, a gas sensor is further included, and the gas sensor is located at the air outlet and is used to detect the carbon dioxide concentration at the air outlet.

[0021] In some specific embodiments, the heating module includes a resistance heating plate, a ceramic heating sheet plate or a film heating sheet.

[0022] In some specific embodiments, a temperature sensor is further included, and the temperature sensor is located at the adsorption module for detecting the temperature of the adsorbent in the adsorption module.

[0023] In some specific embodiments, a plurality of the adsorption modules are distributed in a determinant pattern, and the heating module is located on one side or both sides of each column of adsorption modules.

[0024] Beneficial effects: The present utility model provides an indoor air efficient purification device based on multi-stage adsorption. By adopting a modular design and integrating the adsorption modules into a gas treatment module, it can not only adsorb carbon dioxide in the air at a faster speed to achieve efficient purification of indoor air, but also be flexibly increased or decreased according to different space sizes and requirements, and is easy to install and maintain, adapting to various indoor environments. Applying carbon capture technology to indoor air purification can effectively capture and process carbon dioxide in indoor air, reduce the indoor carbon dioxide concentration, and improve indoor air quality.

[0025] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following specific preferred embodiments are given, and in conjunction with the accompanying drawings, the detailed description is as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0027] Figure 1 is a schematic diagram of each module of the indoor air efficient purification device of the present utility model;

[0028] Figure 2 is a schematic diagram of the overall structure of the gas treatment module of the present utility model;

[0029] Figure 3 is a schematic diagram of the distribution of the adsorption modules of the present utility model;

[0030] Figure 4 is a schematic diagram of the structure of each unit on the adsorption module of the present utility model;

[0031] Figure 5 is a schematic diagram of the adsorption process of the present utility model;

[0032] Figure 6 is a schematic diagram of the desorption process of the present utility model;

[0033] Figure 7 It is a schematic diagram of the air duct distribution of the present utility model.

[0034] Reference numerals: 1 - gas treatment module; 2 - fan; 3 - multi-way valve; 11 - housing; 12 - adsorption module; 13 - heating module; 14 - air inlet; 15 - air outlet; 16 - heating tube. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present utility model.

[0036] This application proposes an indoor air high-efficiency purification device based on multi-stage adsorption, which can efficiently reduce the indoor carbon dioxide concentration and improve the indoor air quality by circulating and adsorbing carbon dioxide indoors. The structure of the indoor air high-efficiency purification device is as shown in the attached Figures 1-4 drawing, and the specific scheme is as follows:

[0037] An indoor air high-efficiency purification device based on multi-stage adsorption includes a fan 2, a multi-way valve 3 and a gas treatment module 1, as specifically shown in the attached Figure 1 drawing. The gas treatment module 1 includes a housing 11, at least one heating module 13 and a plurality of adsorption modules 12 located in the housing 11, as specifically shown in the attached Figure 2 drawing. The heating module 13 is used to heat each adsorption module 12.

[0038] Among them, the gas treatment module 1 contains a plurality of adsorption modules 12, and each adsorption module 12 can adsorb and desorb carbon dioxide, enabling the gas treatment module 1 to achieve more efficient carbon dioxide capture. By combining multiple adsorption modules 12, it can be flexibly increased or decreased according to different space sizes and requirements, and the adsorption module 12 is convenient to disassemble and assemble, easy to install and maintain, and adapts to various indoor environments. The design of the gas treatment module 1 is, firstly, to increase the contact area between the adsorbent material and the air and accelerate the adsorption of carbon dioxide in the air by the adsorbent material. Secondly, it is to avoid the large-scale accumulation of the adsorbent material in the same module, causing great resistance, thereby increasing the operating power and noise of the fan 2. When the contact surface between the adsorption module 12 and the air is very large and the air inlet resistance is very small, a larger air volume can be used to accelerate the carbon capture efficiency of the adsorption material; at the same time, the fan 2 does not require a very high power, reducing the energy consumption. The air carbon capture device realizes the dual purposes of efficient carbon capture and energy saving.

[0039] Among them, at least one air inlet and at least one air outlet are provided on the housing 11. The air inlet is connected to the indoor or indoor + outdoor, and the air outlet is connected to the indoor and outdoor respectively through the multi-way valve 3. The air inlet is the input port of the gas treatment module 1 for gas, and the air outlet is the output port of the gas. In this application, the air inlet is connected to the indoor. Under the action of the fan 2, the indoor air enters the gas treatment module 1, and low-carbon air is obtained after being processed by the adsorption module 12. The carbon dioxide is adsorbed into the adsorbent. Under the action of the fan 2, the low-carbon air can be discharged into the indoor through the air outlet to reduce the carbon dioxide concentration. After desorption, the carbon dioxide can also be discharged outdoors through the air outlet under the action of the fan 2. Therefore, the air outlet of the gas treatment module 1 needs to be connected to the indoor and outdoor through the multi-way valve 3. The multi-way valve 3 is located at the air outlet and is used to discharge the low-carbon air into the indoor or discharge the carbon dioxide desorbed from the adsorption module 12 outdoors under the wind force of the fan 2. Specifically, the multi-way valve 3 has at least three valve ports, one of which is used as the input port to connect to the air outlet, and there are two valve ports respectively connected to the indoor and outdoor.

[0040] In this application, the fan 2 is located at the air inlet and / or the air outlet and is used to extract the indoor air into each adsorption module 12 for adsorption or desorption. The fan 2 can be located at the air inlet to extract the indoor air into the gas treatment module 1 and discharge it under the wind force. The fan 2 can also be arranged at the air outlet. Under the action of the suction force, the indoor air is extracted into the gas treatment module 1 and then discharged outdoors. The fan 2 can also be respectively arranged at the air inlet and the air outlet to increase the gas flow rate and achieve more efficient gas exchange. Preferably, the fan 2 is located at the air outlet, which is convenient for installing the fan 2 on the housing 11 of the gas treatment module 1.

[0041] Specifically, the adsorption module 12 is internally provided with an adsorbent, which is used to adsorb carbon dioxide in the indoor air through the adsorbent to obtain low-carbon air and desorb the carbon dioxide in the adsorbent under heating conditions. The adsorbent is mainly used to adsorb carbon dioxide. Preferably, the adsorbent is a solid amine, which uses the chemical properties of amine substances in the solid state to adsorb and capture carbon dioxide. It is an efficient and environmentally friendly carbon dioxide capture method. Solid amine materials usually have a high surface area and abundant amine groups, which can provide a large number of adsorption sites to achieve high-efficiency adsorption. Moreover, the energy consumption of solid amine adsorption during carbon dioxide desorption and amine material regeneration is lower, reducing energy consumption, being recyclable, and reducing gas treatment costs. In addition, the solid amine material has good chemical stability and thermal stability, can maintain stable performance within a wide temperature range, is not easy to volatilize during the adsorption and desorption processes, reduces the potential pollution of amine substances to the environment, and is suitable for indoor air purification.

[0042] In some specific embodiments, a framework is provided on the adsorption module 12, and the adsorbent is coated, impregnated or filled on the framework. The framework can be a fiberglass framework, a metal framework, a high-temperature resistant plastic framework, etc. The solid amine is combined with the framework by means of coating, impregnation, filling, etc. The filling structure on the framework is as shown in Figure 4 below. When filling, the filling thickness of the solid amine material is about 2 - 50 mm to reduce the wind resistance. A solid amine with strong antioxidant properties is selected as the adsorption material, and air can be used as the carrier gas to desorb carbon dioxide at a temperature lower than . Indoor air or outdoor air as the carrier gas can reduce the partial pressure of carbon dioxide and improve the desorption efficiency. In practical applications, the filling amount of the solid amine can be determined according to the actual indoor space conditions (such as volume, number of people, and whether there are equipment emitting carbon dioxide) and the carbon content requirements. According to the carbon dioxide concentration to be maintained indoors (for example, maintained below 400 ppm), the operating air volume and operating time of the blower 2 during adsorption are regulated. After adsorption, desorption is carried out according to the desorption time required for a specific mass of the solid amine, and adsorption is carried out again after desorption is completed. Thus, the carbon dioxide in the room can be cyclically processed to keep the indoor carbon dioxide content at a low level.

[0043] Specifically, the blower 2 is used to extract indoor air into each of the adsorption modules 12 for carbon dioxide adsorption; or, extract indoor air or outdoor air into the adsorption module 12 for carbon dioxide desorption. By continuously circulating and processing the air, the indoor carbon dioxide concentration is reduced. Preferably, the blower 2 is a centrifugal blower 2, installed on one side of the gas treatment module 1, extracting indoor gas through the gas treatment module 1 and then discharging the gas from the air outlet of the blower 2. The blower 2 extracting indoor air can be used for both adsorption and desorption; extracting outdoor air can only be used for desorption. For both adsorption and desorption of carbon dioxide, only air needs to be introduced into the adsorption module 12. The difference is that during desorption, the heating module 13 needs to be turned on to heat the adsorption material, and the air volume during desorption is smaller. When the desorbed carbon dioxide gas is discharged outdoors, a separate exhaust pipe can be established, or the gas can be discharged into the drain pipe of the air conditioner or other exhaust pipes. In addition, since the working resistance of the adsorption module 12 is extremely low (lower than 100 pa), a low-pressure silent blower 2 can achieve a large air volume, can quickly adsorb carbon dioxide, and the equipment operation cost is very low.

[0044] The indoor air high-efficiency purification device of the present application can be installed indoors alone for carbon capture, or can be combined with an air conditioner or other air treatment equipment to reduce the occupied space and achieve energy conservation at the same time. The complete process is as shown in Figure 5 and Figure 6As shown in the figure, it specifically includes: when running the adsorption process, the indoor air is extracted by the fan 2 and enters the gas treatment module 1. The adsorbent in the gas treatment module 1 adsorbs the carbon dioxide in the extracted air to obtain low-carbon air with a lower carbon dioxide content. The low-carbon air is then discharged back into the room through the fan 2 to circulate and adsorb carbon dioxide, thereby reducing the carbon dioxide concentration in the indoor air. When the adsorption has been carried out for a certain period of time or the adsorbent can no longer adsorb carbon dioxide, carbon dioxide desorption is required. When running the desorption process, the indoor air or outdoor air is extracted by the fan 2 and enters the gas treatment module 1 to change the partial pressure of carbon dioxide, and the heating module 13 is turned on to heat the gas treatment module 1. When the temperature reaches a specific desorption temperature, the carbon dioxide desorbs from the adsorbent and mixes with the indoor air to form high-carbon air, which is then discharged outdoors through the pipeline. The adsorbent that has completed desorption can continue to be used for adsorption treatment to achieve recycling.

[0045] In some specific embodiments, it further includes a control module. The control module is electrically connected to the heating module 13, and / or the fan 2, and / or the gas treatment module 1, and controls the operation of the heating module 13, and / or the fan 2, and / or the gas treatment module 1, and / or the multi-way valve 3 through the control module. The control module can be a commonly used small control device such as a single-chip microcomputer or a controller. The indoor air high-efficiency purification device can operate only by time control, starting desorption after adsorption is completed at a specific time, and starting adsorption again after desorption is completed at a specific time. The indoor carbon dioxide concentration is reduced through multiple rapid adsorption-desorption cycles. It can also increase the carbon dioxide sensor to collect data for control. For example, a carbon dioxide detector is set at the air outlet during adsorption. When the carbon dioxide concentration at the outlet is relatively high, the adsorption can be stopped.

[0046] In some specific embodiments, it further includes a gas sensor located at the air outlet for detecting the carbon dioxide concentration at the air outlet; and / or, it further includes a temperature sensor located at the gas treatment module 1 for detecting the temperature of the adsorbent. The gas sensor can be used to detect the adsorption capacity of the adsorbent. During the adsorption process, when the gas sensor at the air outlet detects a relatively high carbon dioxide concentration in the gas at that location, it can be determined that the adsorption capacity of the adsorbent is poor at this time. It may be that the adsorption capacity of the adsorbent has reached saturation and desorption is required, or the adsorption effect has become poor due to long-term use of the adsorbent and needs to be replaced. The temperature sensor can be used to detect the temperature of the gas treatment module 1. The adsorbent performs adsorption and desorption at a specific temperature. By using the temperature sensor as a feedback unit of the heating module 13, the temperature information of the gas treatment module 1 can be obtained in real time.

[0047] In some embodiments, the adsorption modules 12 are arranged in a stacked manner inside the housing 11, and there are intervals between the adsorption modules 12. Specifically, as shown in the appendix Figure 3As shown. The adsorption module 12 is plate-shaped and is spaced apart, and air can enter the adsorption modules 12 on both sides under the guidance of the housing for adsorption. Exemplarily, the air inlet and the air outlet are rectangular or notched openings of other shapes. A plurality of air inlets and air outlets are located on both sides of the adsorption module 12 and are arranged crosswise in the horizontal direction. The air inlet channels corresponding to the notches are between the two adsorption modules 12. After the air introduced by the fan 2 enters through the plurality of air inlets, it is discharged through the plurality of air outlets.

[0048] In some embodiments, the air inlets, the air outlets, and the adsorption module 12 are staggered; the air inlets are located in the region between two adjacent adsorption modules 12, and the air outlets are located in the region outside two adjacent adsorption modules 12. As shown in the appendix Figure 7 As shown, the air outlets, the adsorption module 12, the air inlets, the adsorption module 12, and the air outlets are arranged in sequence. When the fan 2 introduces the high-carbon indoor air from the right air inlet, since the air inlets and the air outlets are arranged crosswise on the air inlet and outlet surfaces, the end of the air inlet channel is the housing 11; after the gas collides with the housing 11, it is divided into two upper and lower streams and passes through the upper and lower adsorption modules 12 respectively. The housing 11 is on the right side of the gas that has passed through, and the gas is discharged from the air outlet on the left side. Aligning the air guiding channel of the fan 2 with the side with a plurality of air inlets can achieve multi-air inlet air distribution of one fan 2.

[0049] In some embodiments, the heating module 13 is connected to the housing 11 for transferring heat through the housing 11; and / or, the heating module 13 is located inside the housing and close to the adsorption module 12. The desorption of carbon dioxide by the adsorbent is achieved by controlling the temperature. The heating module 13 can be an electric heating device, using the built-in power supply to heat the gas treatment module 1. In some embodiments, the heating module 13 includes a resistance heating plate, a ceramic heating sheet, or a film heating sheet. The resistance heating plate is heated by the Joule heat generated when an electric current passes through a resistive material. These heating plates are usually made of high-resistivity materials such as nickel-chromium alloy and copper, and can be made into a flat or specific shape to meet different application requirements. The advantages of the resistance heating plate include fast heating speed, high temperature control accuracy, simple structure, and easy maintenance. The ceramic heating sheet is a heating element that uses a ceramic material as a substrate with a resistive wire or resistive paste printed or embedded on it. The ceramic material has good insulation performance and thermal stability, and can maintain a stable structure at high temperatures. This heating sheet can provide a uniform heat distribution, has high heating efficiency, is not easily oxidized, and has a long service life. The film heating sheet, also known as a flexible heating sheet, is made by coating or embedding a resistive material on a thin polymer film. This design allows the heating sheet to be very thin and flexible, enabling it to conform to irregular or curved objects. The film heating sheet has the characteristics of fast response, uniform heating, and light weight. In addition, depending on the installation method, the device can either operate its own system to adsorb and desorb carbon dioxide, or use the air flow channels of other air treatment devices for adsorption and use the waste heat generated by air conditioners or other air treatment devices for desorption.

[0050] In some embodiments, multiple adsorption modules 12 are arranged in a determinant pattern, and the heating module 13 is located on one or both sides of each column of adsorption modules 12. Preferably, the heating module further includes a heating tube 16 extending into the adsorption module 12 to heat the inside of the adsorption module 12. By heating through the heating tubes 16 extending into each adsorption module 12, the heating module 13 is located outside the adsorption module 12 to ensure that both the inside and outside of the adsorption module 12 can be fully heated. The distribution of the heating module 13 and the heating tubes 16 located in the adsorption module 12 is as shown in the appendix Figure 3 shown. The modular design enables users to set one or more gas treatment modules 1 and heating modules 13 according to different carbon dioxide treatment requirements. In the appendix Figure 3 shown, the adsorption module 12 has a plate-like structure and is arranged in a matrix pattern. There is a vertically arranged heating module 13 between two columns of adsorption modules 12. The heating module 13 can heat two columns of adsorption modules 12 simultaneously, fully realizing the heating of the gas treatment module 1, improving the heating efficiency, and reducing the heating cost. In addition, the gas treatment module 1 adopts a hollow structural design, with extremely low working resistance.

[0051] The utility model provides an indoor air efficient purification device based on multi-stage adsorption. Adopting a modular design, the adsorption modules are integrated into a gas treatment module, which can not only adsorb carbon dioxide in the air at a faster speed to achieve efficient purification of indoor air, but also be flexibly increased or decreased according to different space sizes and requirements, and is easy to install and maintain, adapting to various indoor environments. Applying carbon capture technology to indoor air purification can effectively capture and process carbon dioxide in indoor air, reduce the indoor carbon dioxide concentration, and improve indoor air quality.

[0052] Note that the above is only the preferred embodiment of the utility model and the applied technical principle. Those skilled in the art will understand that the utility model is not limited to the specific embodiments here. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the utility model. Therefore, although the utility model has been described in more detail through the above embodiments, the utility model is not limited to the above embodiments only. Without departing from the concept of the utility model, more other equivalent embodiments can be included, and the scope of the utility model is determined by the scope of the appended claims.

[0053] The above-disclosed are only several specific implementation scenarios of the utility model. However, the utility model is not limited thereto, and any changes that can be thought of by those skilled in the art should fall within the protection scope of the utility model.

Claims

1. A highly efficient indoor air purification device based on multi-stage adsorption, characterized in that: It includes a fan, a multi-way valve and a gas processing module, wherein the gas processing module includes a shell, at least one heating module and a plurality of adsorption modules located in the shell; The heating module is used to heat each of the adsorption modules; The housing is provided with at least one air inlet and at least one air outlet, the air inlet is connected to the room, and the air outlet is connected to the room and the outside respectively through the multi-way valve; The fan is located at the air inlet and / or the air outlet, and is used to draw indoor air into each of the adsorption modules for adsorption of carbon dioxide; Or, extracting indoor air or outdoor air into the adsorption module to desorb carbon dioxide; The adsorption module has a built-in adsorbent, which is used to adsorb carbon dioxide in indoor air to obtain low-carbon air, and desorb carbon dioxide in the adsorbent under heating conditions; The multi-way valve is located at the air outlet, and is used to discharge the low-carbon air into the room or discharge the carbon dioxide desorbed by the adsorption module to the outside under the action of the wind force of the fan.

2. The indoor air high-efficiency purification device according to claim 1, characterized in that: It also includes a control module, which is electrically connected to the heating module, and / or the fan, and / or the adsorption module, and / or the multi-way valve.

3. The indoor air high-efficiency purification device according to claim 1, characterized in that: The adsorption modules are stacked and arranged in the shell, and there are intervals between the adsorption modules.

4. The indoor air high-efficiency purification device according to claim 1, characterized in that: The heating module is connected to the shell and is used to transfer heat through the shell; And / or, the heating module is located inside the shell and close to the adsorption module; And / or, the heating module further comprises a heating pipe extending into the interior of the adsorption module to heat the interior of the adsorption module.

5. The indoor air high-efficiency purification device according to claim 1, characterized in that: The adsorption module is provided with a frame, and the adsorbent is coated, impregnated or loaded on the frame.

6. The indoor air high-efficiency purification device according to claim 1, characterized in that: The air inlet, the air outlet and the adsorption module are staggeredly distributed; The air inlet is located in a region between two adjacent adsorption modules, and the air outlet is located in a region outside two adjacent adsorption modules.

7. The indoor air high-efficiency purification device according to claim 1, characterized in that: A gas sensor is also included. The gas sensor is located at the gas outlet and is used to detect the carbon dioxide concentration at the gas outlet.

8. The indoor air high-efficiency purification device according to claim 1, characterized in that: The heating module includes a resistance heating plate, a ceramic heating plate or a film heating plate.

9. The indoor air high-efficiency purification device according to claim 1, characterized in that: A temperature sensor is also included. The temperature sensor is located at the adsorption module and is used to detect the temperature of the adsorbent in the adsorption module.

10. The indoor air high-efficiency purification device according to claim 1, characterized in that: The plurality of adsorption modules are distributed in columns, and the heating module is located on one side or both sides of each column of adsorption modules.