Indoor air purification device arranged in air conditioner outdoor unit

Abstract

The utility model provides an indoor air purification device arranged in an air conditioner outdoor unit. The indoor air purification device comprises an air inlet pipe, an air outlet pipe, a shell, a fan, a heating module and a gas processing module. The shell is internally arranged in an external air conditioner outdoor unit; the heating module is close to the gas treatment module; the gas treatment module adsorbs carbon dioxide in indoor air through an adsorbent to obtain low-carbon air, and desorbs carbon dioxide in the adsorbent under a heating condition; the fan extracts indoor air through the air inlet pipe and discharges the indoor air into the gas treatment module, and low-carbon gas is discharged indoors through the air outlet pipe or carbon dioxide desorbed by the gas treatment module is discharged outdoors through the air outlet. According to the scheme, the air purification device is arranged in the air conditioner outdoor unit, carbon dioxide in indoor air is effectively captured and treated, the air quality is improved, and the indoor space is saved. And air output by the air conditioner outdoor unit can be used as a heat source or a cold source for desorption for secondary utilization of energy, so that extra energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the field of indoor air purification, and more specifically, to an indoor air purification device built into an outdoor unit of an air conditioner. Background Art

[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 climate 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 the use of 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 a lower pressure and a 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 the desorption and removal of 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, the traditional air conditioning system consumes a large amount of electric power resources, indirectly resulting in a large amount of carbon dioxide emissions. This problem not only aggravates the trend of global warming, but also causes a large amount of waste of redundant energy of the air conditioner. Moreover, the existing air conditioning systems often have difficulty in 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 domestic environments or other scenarios with strict requirements for air quality, a large amount of air exchange will significantly increase the energy consumption of the air conditioning system. In addition, excessive introduction of fresh air will also bring additional operating pressure to air treatment facilities such as dust removal equipment and humidity control equipment, affecting the efficiency and stability of the overall system.

[0005] Although there are some technical devices that can directly capture carbon dioxide from the environment, these devices are generally large in size, high in energy consumption, and expensive in cost, restricting their application in actual scenarios. Summary of the Utility Model

[0006] Based on the problems existing in the prior art, the present utility model provides an indoor air purification device built into an outdoor air conditioner to solve at least one of the above technical problems. The specific solutions are as follows:

[0007] An indoor air purification device built into an outdoor air conditioner includes an air inlet pipe, an air outlet pipe, a housing, and a fan, a heating module, and a gas treatment module located inside the housing; the housing is built into an external outdoor air conditioner;

[0008] The fan forms an air duct, an air inlet, and an air outlet in the housing. The air inlet is connected to the indoor through the air inlet pipe, and the air outlet is connected to the outdoor and then connected to the indoor through the air outlet pipe;

[0009] The heating module is close to the gas treatment module and is used to heat the gas treatment module;

[0010] The gas treatment module is located between the air inlet and the air outlet and is internally provided with an adsorbent, which 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 fan is used to extract indoor air through the air inlet pipe and discharge it into the gas treatment module, discharge low-carbon gas into the indoor through the air outlet pipe, or discharge carbon dioxide desorbed from the gas treatment module through the air outlet to the outdoor.

[0012] In some specific embodiments, a vacuum device is further included. The vacuum device is connected to the internal cavity of the housing and is used to evacuate the internal cavity after closing the air inlet and the air outlet to create a vacuum condition for the desorption of the adsorbent; and, extract carbon dioxide desorbed from the internal cavity during the desorption process.

[0013] In some specific embodiments, the housing is close to the air outlet of the outdoor air conditioner to be cooled by the cold air output by the outdoor air conditioner or heated by the hot air output by the outdoor air conditioner.

[0014] In some specific embodiments, a cooling module is further included. The cooling module is built into the outdoor air conditioner and is close to the housing, and is used to cool the housing after the desorption of the adsorbent is completed.

[0015] In some specific embodiments, valves are provided at both the air inlet and the air outlet, and the valve at the air outlet is a multi-way valve, one valve port is connected to the outdoor, and one valve port is connected to the air outlet pipe.

[0016] In some specific embodiments, a control module is further included. The control module is communicatively connected to the heating module, and / or the fan, and / or the gas treatment module.

[0017] In some specific embodiments, it further includes a gas sensor communicatively connected to the control module. The gas sensor is located at the air outlet and is used to detect the carbon dioxide concentration at the air outlet.

[0018] And / or, it further includes a temperature sensor communicatively connected to the control module. The temperature sensor is located at the gas treatment module.

[0019] In some specific embodiments, the gas treatment module and the heating module have the same cross-sectional shape and size, and the gas treatment module and the heating module are overlapped and distributed.

[0020] In some specific embodiments, a framework is provided on the gas treatment module, and the adsorbent is coated, impregnated or filled on the framework.

[0021] In some specific embodiments, the heating module is internally provided with a honeycomb-shaped heating block or a fin-shaped heating block.

[0022] Beneficial effects: The present utility model provides an indoor air purification device built into an outdoor unit of an air conditioner. Utilizing the spatial characteristics of the outdoor unit of the air conditioner, the air purification device is built into the outdoor unit of the air conditioner, which can not only effectively capture and process carbon dioxide in indoor air, reduce the indoor carbon dioxide concentration, improve indoor air quality, but also effectively save indoor space, avoid additional equipment occupying indoor space, and reduce the integrated design cost. The device has a small volume and low cost, and integrating it onto the outdoor unit of the air conditioner can expand the functionality of the air conditioner. The air output from the outdoor unit of the air conditioner can be used as a heat source or a cold source for desorption for secondary utilization of energy, reducing additional energy consumption and improving the overall energy utilization efficiency.

[0023] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, makes a detailed description as follows. Description of the Drawings

[0024] 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 a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0025] Figure 1 is a three-dimensional schematic diagram of the indoor air purification device of the present utility model;

[0026] Figure 2 is a cross-sectional view of the indoor air purification device of the present utility model;

[0027] Figure 3 is a schematic diagram of the overall structure of the housing of the present utility model;

[0028] Figure 4 is a schematic diagram of the internal structure of the housing of the present utility model;

[0029] Figure 5 is a schematic diagram of the adsorption process of the present utility model;

[0030] Figure 6 is a schematic diagram of the desorption process of the present utility model.

[0031] Reference numerals: 0 - outdoor unit of air conditioner; 1 - indoor air purification device; 2 - fan; 3 - gas treatment module; 4 - heating module; 5 - housing; 6 - valve; 7 - accommodating housing; 8 - vacuum device; 21 - air inlet; 22 - air outlet; 71 - accommodating side wall; 72 - accommodating bottom wall. Detailed implementation manners

[0032] 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 of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] The present application proposes an indoor air purification device built into an outdoor unit of an air conditioner, integrating carbon capture technology into the outdoor unit of the air conditioner, effectively reducing the indoor carbon dioxide concentration, improving the indoor air quality, and the device has a small volume and low cost. The overall structure of the indoor air purification device is as shown in the attached Figure 1 and attached Figure 2 as shown, the internal structure is as shown in attached Figure 3 and attached Figure 4 as shown, and the principle is as shown in attached Figure 5 and attached Figure 6 as shown. The specific solution is as follows:

[0034] An indoor air purification device 1 built into an outdoor unit 0 of an air conditioner includes an air inlet pipe, an air outlet pipe, a housing 5, and a fan 2, a heating module 4, and a gas treatment module 3 located inside the housing 5; the housing 5 is built into the external outdoor unit 0 of the air conditioner. The housing 5 and the fan 2, the heating module 4, and the gas treatment module 3 inside it are all located in the outdoor unit 0 of the air conditioner and are in air circulation with the indoor through the air inlet pipe and the air outlet pipe. The positional relationship of the indoor air purification device 1 in the outdoor unit 0 of the air conditioner is as shown in attached Figure 2 as shown.

[0035] Among them, the blower 2 forms an air duct, an air inlet 21 and an air outlet 22 in the housing 5. The air inlet 21 is connected to the interior of the room through an air inlet pipe, and the air outlet 22 is connected to the outside of the room and then connected to the interior of the room through an air outlet pipe. The air inlet pipe and the air outlet pipe are channels connecting the indoor air purification device 1 and the interior of the room. Indoor air enters the indoor air purification device 1 through the air inlet pipe under the action of the blower 2, becomes low-carbon air after carbon capture, and the low-carbon air is discharged into the room through the air outlet pipe under the action of the blower 2, achieving a reduction in the carbon dioxide concentration. The process is as shown in the appendix Figure 5 as shown. The heating module 4 and the gas treatment module 3 are both located on the air duct, and air can flow out of the air outlet 22 through the heating module 4 and the gas treatment module 3 under the action of the blower 2. The heating module 4 and the gas treatment module 3 are located between the blower 2 and the air outlet 22.

[0036] Among them, the heating module 4 is close to the gas treatment module 3 and is used to heat the gas treatment module 3; the gas treatment module 3 is located between the air inlet 21 and the air outlet 22 and is internally provided with an adsorbent, which is used to adsorb carbon dioxide in indoor air through the adsorbent to obtain low-carbon air, and desorb the carbon dioxide in the adsorbent under heating conditions; the blower 2 is used to extract indoor air through the air inlet pipe and discharge it into the gas treatment module 3, discharge low-carbon gas into the room through the air outlet pipe or discharge the carbon dioxide desorbed from the gas treatment module 3 to the outside through the air outlet 22.

[0037] In some specific embodiments, a vacuum device 8 is further included. The vacuum device 8 is connected to the internal cavity of the housing 5 and is used to evacuate the internal cavity after closing the air inlet 21 and the air outlet 22 to create a vacuum condition for the desorption of the adsorbent; and, extract the carbon dioxide desorbed from the internal cavity during the desorption process. Taking the solid amine as the adsorbent as an example, the low pressure in the vacuum environment helps to break the adsorption force between amine molecules and carbon dioxide molecules, accelerate the desorption process, and improve the desorption efficiency. At the same time, in the vacuum state, the mean free path of gas molecules increases, reducing the intermolecular collision, so that the desorbed carbon dioxide molecules can escape from the surface of the adsorption material faster, reducing the possibility of re-adsorption. It can significantly improve the desorption efficiency. Under vacuum conditions, due to the decrease in pressure, the boiling point of the carbon dioxide molecules adsorbed in the adsorbent will also decrease accordingly, which means that desorption can be achieved at a lower temperature. This not only reduces the required energy consumption and lowers the operating cost, but also helps to protect the adsorption material and avoid possible structural damage or performance degradation caused by high temperature. And, vacuum desorption is usually combined with a continuous operation adsorption-desorption cycle system, which can realize a continuous gas treatment process. In the vacuum environment, after the desorption stage is completed, the system can quickly return to normal pressure or slightly positive pressure state to carry out the next cycle of adsorption, thereby improving the processing capacity and working efficiency of the entire system. The vacuum device 8 uses a vacuum pump, which can not only evacuate the internal cavity of the housing 5, but also collect the desorbed carbon dioxide from the outlet of the vacuum pump.

[0038] The complete flow chart is as attached Figure 5 and 6 shown. Specifically, when the adsorption is in operation, as shown in the attachment Figure 5 shown, the indoor air is extracted by the fan 2 and enters the gas treatment module 3 through the intake pipe. The adsorbent in the gas treatment module 3 adsorbs the carbon dioxide in the extracted air, and low-carbon air with a lower carbon dioxide content is obtained. The low-carbon air is discharged into the room through the fan 2 via the outlet pipe, and the carbon dioxide is cyclically adsorbed to reduce the carbon dioxide concentration in the indoor air. When the adsorption has been carried out for a period of time or the adsorbent can no longer adsorb carbon dioxide, carbon dioxide desorption is required. When the desorption is in operation, as shown in the attachment Figure 6 shown, first, the air in the inner cavity of the housing 5 is extracted by the vacuum device 8 to reach a vacuum state, and the heating module 4 is turned on to heat the gas treatment module 3. When the temperature reaches a specific desorption temperature, the carbon dioxide desorbs from the adsorbent. The desorbed carbon dioxide can be extracted by the vacuum device 8 and discharged outdoors or collected and processed. The adsorbent that has completed desorption can continue to be used for adsorption treatment to achieve recycling.

[0039] In some specific embodiments, the housing 5 is close to the air outlet of the air conditioner outdoor unit 0, so as to be cooled by the cold air output by the air conditioner outdoor unit 0 or heated by the hot air output by the air conditioner outdoor unit 0. In the cooling and heating modes of the air conditioner, the nature of the air output by the air conditioner outdoor unit 0 is different. By using the air with different natures for carbon dioxide desorption, the secondary utilization of this part of energy reduces the additional energy consumption, reduces the gas treatment cost, and improves the overall energy utilization efficiency.

[0040] In the cooling mode, the air conditioner outdoor unit 0 mainly outputs hot air. This is because the refrigerant absorbs the heat in the room in the evaporator (located in the indoor unit) of the air conditioning system, and then becomes a high-temperature and high-pressure gas through compression by the compressor, and then dissipates heat through the condenser of the outdoor unit, releasing the heat into the outdoor air. In this process, the fan of the outdoor unit will accelerate the air flow to help the condenser dissipate heat, so the hot air discharged from the air conditioner outdoor unit 0 is hotter than the ambient temperature. At this time, the hot air can be used to heat the gas treatment module 3 for preliminary desorption. When the preliminary desorption has been carried out for a period of time or the humidity of the outlet gas is detected to be low, it proves that the preliminary desorption is coming to an end, and the hot air blowing can be stopped. When blowing hot air, the air volume needs to be controlled by the induced draft fan 2 so that the temperature of the adsorption material does not exceed 60.

[0041] In the heating mode, the outdoor unit 0 of the air conditioner mainly outputs cold air. At this time, the flow direction of the refrigerant is reversed, and the condenser of the outdoor unit becomes an evaporator, absorbing heat from the outside air and causing the refrigerant to evaporate. This process will lower the temperature of the surrounding air, so the air discharged from the outdoor unit 0 is relatively cold. Then, the refrigerant is pressurized by the compressor and becomes a high-temperature and high-pressure gas, and then releases heat in the condenser of the indoor unit to provide warmth for the room. At this time, the outdoor unit 0 of the air conditioner will output cold air, which can be used to cool the indoor air purification device 1 after desorption. Desorption needs to reach a specific desorption temperature, and natural cooling or temperature reduction treatment is required after desorption to proceed with the next adsorption. Introducing cold air from the outdoor unit to purge the housing 5 can achieve accelerated cooling. When the temperature sensor detects that the temperature of the adsorption material is lower than 50, the cooling can be stopped. Using the cold air of the outdoor unit 0 for cooling can accelerate the cooling inside the housing 5, reduce the waiting time of the device, and improve the carbon dioxide capture efficiency. In some specific embodiments, a cooling module is also included. The cooling module is built into the outdoor unit 0 and is close to the housing 5, and is used to cool the housing 5 after the adsorbent desorption is completed. A dedicated cooling module, such as an air-cooled module or a liquid-cooled module, can also be set up separately in the indoor unit of the air conditioner.

[0042] In some specific embodiments, valves 6 are provided at both the air inlet 21 and the air outlet 22, and the valve 6 at the air outlet 22 is a multi-way valve, with one valve port communicating with the outside and one valve port communicating with the air outlet pipe. The valve 6 communicating with the outside can be directly connected to the inside of the outdoor unit 0 of the air conditioner to discharge the air into the outdoor unit 0 of the air conditioner, and the air is discharged together by means of the fan of the outdoor unit of the air conditioner. In some specific embodiments, a control module is also included. The control module is electrically connected to the heating module 4, and / or the blower 2, and / or the gas treatment module 3, and controls the operation of the heating module 4, and / or the blower 2, and / or the gas treatment module 3 through the control module. The valve 6 can be an electric valve, and the control module can control the operation of the electric valve.

[0043] In this application, the indoor air purification device 1 is integrated inside the outdoor unit 0 of the air conditioner. The carbon dioxide output by the indoor air purification device 1 can be discharged outdoors by means of the fan of the outdoor unit 0 of the air conditioner, or temperature treatment can be performed by means of the cold air or hot air generated by the outdoor unit 0 of the air conditioner. The outdoor unit 0, also known as the outdoor machine, is one of the important components of the air conditioning system. It is usually installed outside the building and is responsible for processing the refrigerant of the air conditioning system and dissipating or absorbing heat. Its main function is to work in cooperation with the indoor unit in the cooling and heating modes to adjust the indoor temperature. The indoor air purification device 1 of this application needs to be built into the outdoor unit 0 of the air conditioner, so that the air conditioner can increase the function of carbon dioxide treatment without changing the existing structure of the air conditioner. It can work in combination with the air conditioning system or operate independently of the air conditioning system, and does not require complex system control.

[0044] Specifically, the fan 2 is responsible for extracting indoor air through the intake duct, discharging the low-carbon gas after being processed by the gas treatment module 3 into the room, and discharging the desorbed carbon dioxide to the outside. By continuously circulating and processing the air, the indoor carbon dioxide concentration is reduced. Preferably, the fan 2 is a centrifugal fan.

[0045] Specifically, the gas treatment module 3 is provided with an adsorbent for adsorbing carbon dioxide in the gas through the adsorbent and desorbing 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. Using the chemical properties of amine substances in the solid state to capture carbon dioxide 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 solid amine adsorption has lower energy consumption during the carbon dioxide desorption and amine material regeneration processes, reducing energy consumption, being recyclable, and reducing the gas treatment cost. In addition, the solid amine material has good chemical stability and thermal stability, can maintain stable performance within a wide temperature range, is not easily volatilized during the adsorption and desorption processes, reduces the potential pollution of amine substances to the environment, and is suitable for indoor air purification.

[0046] In some specific embodiments, the gas treatment module 3 is provided with a framework, and the adsorbent is coated, impregnated or filled on the framework. The framework can be a glass fiber 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.

[0047] The adsorption and desorption of carbon dioxide by the adsorbent can be achieved by controlling the temperature. The heating module 4 can select an electric heating device to heat-treat the gas treatment module 3 using the built-in power supply. In some specific embodiments, the heating module 4 is internally provided with a honeycomb heating block or a fin-shaped heating block to accelerate heat transfer by increasing the surface contact area to improve the heat exchange efficiency.

[0048] In some specific embodiments, valves 6 are provided at both the air inlet 21 and the air outlet 22, and the valve 6 at the air outlet 22 is a multi-way valve, with one valve port communicating with the outside and one valve port communicating with the air outlet duct. The multi-way valve is equivalent to providing two output ports and one input port, and discharging the gas at the input port through one of the output ports.

[0049] The indoor air purification device 1 can operate only by time control, start desorption after adsorption is completed at a specific time, and start adsorption again after desorption is completed at a specific time. The indoor carbon dioxide concentration can be reduced through multiple rapid adsorption-desorption cycles. It can also increase the collection of data by a carbon dioxide sensor to control the operation. For example, a carbon dioxide detector is set at the outlet of the fan 2 during adsorption. When the carbon dioxide concentration at the outlet is relatively high, the adsorption can be stopped. In some specific embodiments, it further includes a gas sensor located at the air outlet 22 for detecting the carbon dioxide concentration at the air outlet 22; and / or, it further includes a temperature sensor located at the gas treatment module 3. 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 22 detects a relatively high carbon dioxide concentration in the gas at that place, it can be determined that the adsorption capacity of the adsorbent is relatively poor at this time. It may be that the adsorption capacity of the adsorbent has reached saturation and desorption is required, or the adsorption performance of the adsorbent has become relatively poor after long-term use and needs to be replaced. The temperature sensor can be used to detect the temperature of the gas treatment module 3. The adsorbent performs adsorption and desorption at a specific temperature. Through the temperature sensor as a feedback unit of the heating module 4, the temperature information of the gas treatment module 3 can be obtained in real time.

[0050] In some specific embodiments, both the gas treatment module 3 and the heating module 4 are in a disc shape, and the gas treatment module 3 and the heating module 4 are overlapped and distributed. The modular design enables users to set one or more gas treatment modules 3 and heating modules 4 according to different carbon dioxide treatment requirements. The gas treatment module 3 and the heating module 4 adopt a hollow structural design, with extremely low working resistance. A low-pressure silent fan 2 can achieve a large air volume, quickly adsorb carbon dioxide, and the equipment operation cost is very low. Figure 3 and 4 The structural schematic diagrams of the heating module 4 and the gas treatment module 3 are given. The gas treatment modules 3 are respectively arranged on both sides of the heating module 4, which can fully realize the heating of the gas treatment module 3, improve the heating efficiency, and reduce the heating cost.

[0051] In Figure 3 and 4 In, the modular heating module 4 and gas treatment module 3 are placed in the accommodating housing 7. The accommodating housing 7 is a container with an opening, and the opening is buckled at the air outlet 22 of the fan 2. The accommodating housing 7 includes an accommodating side wall 71 and an accommodating bottom wall 72. The accommodating bottom wall 72 has air permeability to allow gas to pass through. Filter materials can be set on the accommodating bottom wall 72 to filter large particles such as possible dust and adsorbent.

[0052] The utility model provides an indoor air purification device built in an outdoor air conditioner. By utilizing the spatial characteristics of the outdoor air conditioner, the air purification device is built into the outdoor air conditioner, which can not only effectively capture and process carbon dioxide in indoor air, reduce the indoor carbon dioxide concentration, improve the indoor air quality, but also effectively save indoor space, avoid additional equipment occupying indoor space, and reduce the integrated design cost. The device is small in volume and low in cost, and integrating it onto the outdoor air conditioner can expand the functionality of the air conditioner. The air output from the outdoor air conditioner can be used as the heat source or cold source for desorption for secondary utilization of energy, reducing additional energy consumption and improving the overall energy utilization efficiency.

[0053] 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 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.

[0054] The above discloses 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. An indoor air purification device built into an air conditioner outdoor unit, characterized in that: It includes an air inlet pipe, an air outlet pipe, a shell, and a fan, a heating module and a gas processing module located inside the shell; the shell is built into an external air conditioner; The fan forms an air duct, an air inlet and an air outlet in the housing, the air inlet is connected to the indoor through the air inlet pipe, the air outlet is connected to the outdoor and is connected to the indoor through the air outlet pipe; The heating module is close to the gas processing module and is used to heat the gas processing module; The gas processing module is located between the air inlet and the air outlet, and has an adsorbent built therein, and is used to adsorb carbon dioxide in the indoor air to obtain low-carbon air through the adsorbent, and desorb carbon dioxide in the adsorbent under heating conditions; The fan is used to draw indoor air through the air inlet pipe and discharge it into the gas processing module, discharge low-carbon gas to the room through the air outlet pipe, or discharge carbon dioxide desorbed by the gas processing module to the outside through the air outlet.

2. The indoor air purification device according to claim 1, characterized in that: It also includes a vacuum device, which is connected to the internal cavity of the shell and is used to evacuate the internal cavity after closing the air inlet and the air outlet to create vacuum conditions for desorption of the adsorbent; and to extract the desorbed carbon dioxide in the internal cavity during the desorption process.

3. The indoor air purification device according to claim 1, characterized in that: The shell is close to the air outlet of the air conditioner outdoor unit so as to cool down by the cold air output by the air conditioner outdoor unit or heat up by the hot air output by the air conditioner outdoor unit.

4. The indoor air purification device according to claim 1, characterized in that: It also includes a cooling module, which is built into the air conditioner outdoor unit and close to the shell, and is used to cool the shell after the adsorbent is desorbed.

5. The indoor air purification device according to claim 2, characterized in that: Valves are provided at both the air inlet and the air outlet, and the valve at the air outlet is a multi-way valve, one valve port of which is connected to the outside of the room, and one valve port of which is connected to the air outlet pipe.

6. The indoor air purification device according to claim 1, characterized in that: It also includes a control module, which is communicatively connected to the heating module, and / or the fan, and / or the gas processing module.

7. The indoor air purification device according to claim 6, characterized in that: Also included is a gas sensor communicatively connected to the control module, the gas sensor being located at the air outlet and used to detect the carbon dioxide concentration at the air outlet; And / or, it also includes a temperature sensor that is communicatively connected to the control module, and the temperature sensor is located at the gas processing module.

8. The indoor air purification device according to claim 1, characterized in that: The gas processing module and the heating module have the same cross-sectional shape and size, and the gas processing module and the heating module are overlapped and distributed.

9. The indoor air purification device according to claim 1, characterized in that: The gas processing module is provided with a frame, and the adsorbent is coated, impregnated or loaded on the frame.

10. The indoor air purification device according to claim 1, characterized in that: The heating module has a built-in honeycomb-shaped heating block or a fin-shaped heating block.

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