Air treatment system for sealed space and sealed cabin

Abstract

The utility model discloses an air treatment system for a closed space and a sealed cabin, and the air treatment system for the closed space comprises an air pressurization device, an air purification device and a temperature and humidity control device, the air pressurizing device comprises a pressure sensor and an air pressurizer, the pressure sensor is used for detecting air pressure, and the air pressurizer is used for carrying out air pressurizing treatment; the air purification device comprises a first circulation channel, a centrifugal fan, an air detection assembly and an air purification assembly, the air detection assembly is used for detecting air quality, and the air purification assembly is used for carrying out air purification treatment; the temperature and humidity control device comprises a second circulation channel, a temperature and humidity detection assembly and a temperature and humidity adjusting assembly, the temperature and humidity detection assembly is used for detecting the temperature and humidity of the air, and the temperature and humidity adjusting assembly is used for refrigerating or heating and drying or humidifying the air. The air treatment system for the closed space can effectively improve the air quality.

Description

TECHNICAL FIELD

[0001] The utility model relates to air treatment technical field, especially, relate to a kind of air treatment system for closed space, and the sealed cabin using the air treatment system for closed space described. BACKGROUND

[0002] At present, the conventional air treatment equipment can only realize simple air purification treatment, and when temperature adjustment function is needed, temperature control module is simply added in air purification pipeline, when humidity adjustment function is needed, humidity control module is simply added in air purification pipeline, and so on. For example, the air purification and sterilization device provided by Chinese utility model patent CN205536135U and the hyperbaric oxygen chamber with air purification and sterilization function, a first air filtration module for filtering odors and dust, a second air adsorption module for adsorbing and removing carbon dioxide in air, a third air temperature control module for adjusting air humidity, a fourth air humidity control module for adjusting air humidity and a fifth air sterilization module for supplementing negative ions to sterilize, purify and remove odors are sequentially connected in series in the device body from the air inlet.

[0003] However, directly connecting multiple air treatment modules in series in the same flow path can cause mutual influence between the air treatment modules, and the effect of each air treatment module cannot be fully achieved, for example, temperature adjustment can cause thermal expansion and contraction reaction of air filtration module, affecting the filtration effect, resulting in poor actual air treatment effect, which cannot meet the use requirements. SUMMARY

[0004] The utility model primarily provides a kind of air treatment system for closed space, to solve the technical problem of poor air treatment effect of existing air treatment equipment.

[0005] The utility model also provides a sealed cabin, using the above-mentioned air treatment system for closed space.

[0006] According to one aspect of the utility model, an air treatment system for closed space is provided, comprising an air pressurizing device, an air purification device and a temperature and humidity control device.

[0007] The air pressurizing device comprises a pressure sensor and an air booster electrically connected to the pressure sensor, the pressure sensor is arranged in the closed space and detects the air pressure in the closed space, and the air booster is started when the detection result of the pressure sensor is lower than the preset value and performs air pressurizing treatment on the closed space.

[0008] The air purification device comprises a first circulation channel, a centrifugal fan, an air detection assembly and an air purification assembly, the inlet end and the outlet end of the first circulation channel are used for communicating with the closed space, the centrifugal fan is arranged at the outlet end of the first circulation channel and is used for pumping air from the inlet end of the first circulation channel, the air detection assembly is arranged in the closed space and is used for detecting the air quality in the closed space, the air purification assembly is arranged in the first circulation channel and is electrically connected with the air detection assembly, and the air purification assembly is used for starting and performing air purification treatment on the closed space when the detection result of the air detection assembly is lower than a preset value.

[0009] The temperature and humidity control device comprises a second circulation channel, a temperature and humidity detection assembly and a temperature and humidity adjustment assembly, the inlet end and the outlet end of the second circulation channel are used for communicating with the closed space, the temperature and humidity detection assembly is arranged at the inlet end of the second circulation channel and is used for detecting the temperature and humidity of the air in the closed space, and the temperature and humidity adjustment assembly is arranged in the second circulation channel and is electrically connected with the temperature and humidity detection assembly, and the temperature and humidity adjustment assembly is used for performing refrigeration or heating, and drying or humidifying treatment on the air according to the detection result of the temperature and humidity detection assembly.

[0010] Preferably, the air detection assembly comprises an oxygen concentration detector and a carbon dioxide concentration detector, and the air purification assembly comprises an oxygen production device electrically connected with the oxygen concentration detector and a carbon removal device electrically connected with the carbon dioxide concentration detector.

[0011] Preferably, the carbon removal device is arranged in series with the oxygen production device and is arranged at the rear end of the oxygen production device.

[0012] Preferably, the air detection assembly further comprises an odor detector, the air purification assembly further comprises an odor treatment device electrically connected with the odor detector, and the odor treatment device is arranged at the rear end of the oxygen production device.

[0013] Preferably, the air detection assembly further comprises a particulate matter detector, the air purification assembly further comprises a particulate matter filter device electrically connected with the particulate matter detector, and the particulate matter filter device is arranged at the rear end of the oxygen production device.

[0014] Preferably, the air pressurizing device further comprises a safety valve arranged between the air pressurizer and the closed space, the safety valve is used for opening the closed space when the output pressure of the air pressurizer is greater than a preset pressure, and the safety valve is also used for blocking the closed space when the output pressure of the air pressurizer is less than the preset pressure.

[0015] Preferably, one-way valves are arranged in the first circulation channel and the second circulation channel.

[0016] Preferably, the inlet end and the outlet end of the first circulation channel are arranged at opposite ends of the closed space.

[0017] Preferably, the inlet end of the first circulation channel is arranged at the first end of the closed space.

[0018] The outlet end of the first circulation channel and the outlet end of the air pressurizer, and the inlet end and the outlet end of the second circulation channel are arranged at the second end of the closed space.

[0019] As a second aspect, the utility model also provides a sealed cabin, including cabin body, the sealed cabin still includes above-mentioned air treatment system for closed space, air treatment system for closed space is located on the cabin body.

[0020] The utility model has the advantages of the following:

[0021] The air treatment system for the closed space has the advantages that when the air pressure in the closed space is insufficient, the air pressurization device automatically performs air pressurization treatment, when the air quality in the closed space is poor, the air purification device automatically performs air purification treatment, and when the temperature and humidity of the air in the closed space are poor, the temperature and humidity control device automatically performs temperature and humidity adjustment, so that multiple air indexes are automatically adjusted, the air treatment system can be applied to plateau areas, hyperbaric oxygen chambers or special operation workshops, and the air environment can be accurately adjusted and harmlessly treated, the structure is simple and efficient, and the applicability is strong. More importantly, the air pressurization device, the air purification device and the temperature and humidity control device are independently arranged, the internal flow paths of the air purification device and the temperature and humidity control device are not affected when the air pressurization device performs air pressurization treatment on the closed space, the internal flow paths of the air pressurization device and the temperature and humidity control device are not affected when the air purification device performs air purification treatment on the closed space, and the internal flow paths of the air pressurization device and the air purification device are not affected when the temperature and humidity control device performs temperature and humidity adjustment on the closed space, that is, the air treatment devices do not affect each other, independently operate through separate pipelines, the air treatment effect of each air treatment device is effectively improved, the air quality is improved, and higher use requirements are met.

[0022] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The utility model will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which form a part of this application, are intended to provide further understanding of the present application and are incorporated herein in their entirety. The description and illustration in the present application are by way of example and are not intended to limit the present application.

[0024] Figure 1 A structural schematic diagram of an air treatment system for a closed space provided by an embodiment of the present application.

[0025] Legend:

[0026] 1, air pressurizing device; 11, pressure sensor; 12, air booster;

[0027] 2, air purification device; 21, first circulating channel; 22, centrifugal fan; 23, air detection assembly; 231, oxygen concentration detector; 232, carbon dioxide concentration detector; 233, odor detector; 234, particulate matter detector; 24, air purification assembly; 241, oxygen generating equipment; 242, carbon removal equipment; 243, odor treatment equipment; 244, particulate matter filtering equipment;

[0028] 3, temperature and humidity control device; 31, second circulating channel; 32, temperature and humidity detection assembly; 33, temperature and humidity adjustment assembly;

[0029] 4, cabin; 41, closed space. DETAILED DESCRIPTION

[0030] The embodiments of the present application will be described in detail below with reference to the accompanying drawings, but the present application can be implemented in various different ways as defined and covered below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are only used to explain the present application, and cannot be interpreted as limiting the present application.

[0031] Those skilled in the art can understand that, unless specifically stated, the wording "comprising" used in the specification of the present application means that the features, integers, steps, operations, components and / or assemblies are present, but does not exclude the presence or addition of one or more other features, integers, steps, operations, components, assemblies and / or combinations thereof. It should be understood that when we say that a component is "connected" to another component, it can be directly connected to the other component or connected through an intermediate component. The wording "and / or" used herein includes all or any unit and all combinations of the associated listed items. The terms "first" and "second" and the like in the specification and claims of the present application are used to distinguish different objects, and are not used to describe a specific order.

[0032] As Figure 1 shown in the utility model embodiment provides a kind of air handling system for closed space, including air pressurization device 1, air purification device 2 and temperature and humidity control device 3 for being used to communicate with closed space 41, the air pressurization device 1 is used to adjust the air pressure of closed space 41, the air purification device 2 is used to purify the air in closed space 41, and the temperature and humidity control device 3 is used to adjust the temperature and humidity of the air in closed space 41.

[0033] Specifically, the air pressurization device 1 includes a pressure sensor 11 and an air supercharger 12 electrically connected to the pressure sensor 11, the pressure sensor 11 is arranged in the closed space 41 and detects the air pressure in the closed space 41, and the air supercharger 12 is started when the detection result of the pressure sensor 11 is lower than the preset value and performs air pressurization treatment on the closed space 41, so that the air pressure in the closed space 41 is kept above the preset value, avoiding low pressure and causing altitude sickness.

[0034] Further, the air purification device 2 includes a first circulation channel 21, a centrifugal fan 22, an air detection assembly 23 and an air purification assembly 24, the inlet end and the outlet end of the first circulation channel 21 are used to communicate with the closed space 41, the centrifugal fan 22 is arranged at the outlet end of the first circulation channel 21 and is used to extract air from the inlet end of the first circulation channel 21, the air detection assembly 23 is arranged in the closed space 41 and detects the air quality in the closed space 41, and the air purification assembly 24 is arranged in the first circulation channel 21 and is electrically connected to the air detection assembly 23, the air purification assembly 24 is started when the detection result of the air detection assembly 23 is lower than the preset value and performs air purification treatment on the closed space 41.

[0035] Further, the temperature and humidity control device 3 includes a second circulation channel 31, a temperature and humidity detection assembly 32 and a temperature and humidity adjustment assembly 33, the inlet end and the outlet end of the second circulation channel 31 are used to communicate with the closed space 41, the temperature and humidity detection assembly 32 is arranged at the inlet end of the second circulation channel 31 and is used to detect the temperature and humidity of the air in the closed space 41, and the temperature and humidity adjustment assembly 33 is arranged in the second circulation channel 31 and is electrically connected to the temperature and humidity detection assembly 32, the temperature and humidity adjustment assembly 33 is used to cool or heat the air according to the detection result of the temperature and humidity detection assembly 32, and dry or humidify treatment.

[0036] The use principle of the air treatment system for the closed space is that when the air pressure in the closed space 41 is insufficient, the air pressurization device 1 is automatically used for air pressurization treatment; when the air quality in the closed space 41 is poor, the air purification device 2 is automatically used for air purification treatment; and when the temperature and humidity of the air in the closed space 41 are poor, the temperature and humidity control device 3 is automatically used for temperature and humidity adjustment, so that multiple air indicators are automatically adjusted. The air treatment system can be applied to plateau areas, hyperbaric oxygen chambers or special operation workshops, and can precisely adjust and harmlessly treat the air environment. The structure is simple, efficient and highly applicable. More importantly, since the air pressurization device 1, the air purification device 2 and the temperature and humidity control device 3 are independently arranged, the internal flow paths of the air purification device 2 and the temperature and humidity control device 3 will not be affected when the air pressurization device 1 is used for air pressurization treatment of the closed space 41; the internal flow paths of the air pressurization device 1 and the temperature and humidity control device 3 will not be affected when the air purification device 2 is used for air purification treatment of the closed space 41; and the internal flow paths of the air pressurization device 1 and the air purification device 2 will not be affected when the temperature and humidity control device 3 is used for temperature and humidity adjustment of the closed space 41. That is, the air treatment devices will not affect each other, and can be independently operated through separate pipelines, so as to effectively improve the air treatment effect of each air treatment device, improve the air quality and meet higher use requirements.

[0037] Further, the temperature and humidity adjustment assembly 33 has an air outlet function. Air is discharged from the outlet end of the second circulation channel 31, so that negative pressure is formed at the inlet end of the second circulation channel 31, thereby automatically extracting the air in the closed space 41 into the second circulation channel 31 for temperature and humidity adjustment. In other embodiments, a circulating fan can be arranged in the second circulation channel 31, and the circulating fan is used to drive the air to flow along the second circulation channel 31.

[0038] It should be understood that the detection result of the air detection assembly 23 being lower than the preset value refers to the state of excessively low air quality. When the oxygen concentration in the closed space 41 is too low, the carbon dioxide concentration is too high, the odor concentration is too high or the particulate matter concentration is too high, it is all the state of excessively low air quality.

[0039] Preferably, the air detection assembly 23 comprises an oxygen concentration detector 231 and a carbon dioxide concentration detector 232, and the air purification assembly 24 comprises an oxygen generating device 241 and a carbon removing device 242. The oxygen concentration detector 231 is electrically connected to the oxygen generating device 241, and the carbon dioxide concentration detector 232 is electrically connected to the carbon removing device 242.

[0040] Specifically, the oxygen concentration detector 231 is arranged in the closed space 41 and detects the oxygen concentration in the closed space 41, the oxygen generating device 241 is arranged in the first circulation channel 21 and starts to generate oxygen when the oxygen concentration in the closed space 41 is lower than a preset value, so as to increase the oxygen concentration; the carbon dioxide concentration detector 232 is arranged in the closed space 41 and detects the carbon dioxide concentration in the closed space 41, the carbon removing device 242 is arranged in the first circulation channel 21 and starts to remove carbon dioxide when the carbon dioxide concentration in the closed space 41 exceeds a preset value, so as to decrease the carbon dioxide concentration. By adjusting the oxygen concentration and the carbon dioxide concentration by the air purification device 2 respectively, the oxygen and carbon dioxide contents in the closed space 41 can be maintained in a relatively balanced range, a more comfortable space is provided, and the survivable time of the closed space 41 is prolonged.

[0041] Secondly, the air pressurizing device 1 is used to deliver air outside to the closed space 41, when the oxygen concentration outside is normal, the air pressurizing device 1 can provide certain oxygen for the closed space 41 while pressurizing the closed space 41; when the oxygen concentration outside is too low, the air pressurizing device 1 can only pressurize the closed space 41, at this time, the oxygen generating device 241 can be started to increase the oxygen content in the closed space 41, that is, the oxygen generating device 241 can form a complementary effect with the air pressurizing device 1 in a coordinated manner, so as to ensure that the oxygen content in the closed space 41 is sufficient.

[0042] Preferably, the carbon removing device 242 is arranged in series with the oxygen generating device 241 and at the rear end of the oxygen generating device 241, because the oxygen generating device 241 may generate other substances during oxygen generation, the carbon removing device 242 is arranged at the rear end of the oxygen generating device 241, so that the carbon removing device 242 can remove the carbon substances generated by the oxygen generating device 241, and the purity of oxygen is improved.

[0043] Preferably, the air detection assembly 23 further comprises an odor detector 233, the air purification assembly 24 further comprises an odor treatment device 243, the odor treatment device 243 is electrically connected with the odor detector 233, and the odor treatment device 243 is arranged in series with the oxygen generating device 241 and at the rear end of the oxygen generating device 241.

[0044] Specifically, the odor detector 233 is arranged in the closed space 41 and detects the odor concentration in the closed space 41, and the odor treatment device 243 is arranged in the first circulation channel 21 and starts air deodorization treatment when the air suction concentration in the closed space 41 exceeds a preset value, so as to improve the air freshness. In addition, since the oxygen production device 241 may produce other substances during oxygen production, the odor treatment device 243 is arranged at the rear end of the oxygen production device 241, so that the odor treatment device 243 can remove the odor produced by the oxygen production device 241, further improving the purity of oxygen.

[0045] Preferably, the air detection assembly 23 further comprises a particulate matter detector 234, and the air purification assembly 24 further comprises a particulate matter filtration device 244, which is electrically connected with the particulate matter detector 234 and arranged at the rear end of the oxygen production device 241 in series with the oxygen production device 241.

[0046] Specifically, the particulate matter detector 234 comprises a PM2.5 detector and a PM10 detector, and is arranged in the closed space 41 and detects the PM2.5 value and the PM10 value in the closed space 41. The particulate matter filtration device 244 is arranged in the first circulation channel 21 and starts air filtration treatment when the PM2.5 value and / or the PM10 value in the closed space 41 exceeds a preset value, so as to filter out particulate matters in the air. In addition, since the oxygen production device 241 may produce other substances during oxygen production, the particulate matter filtration device 244 is arranged at the rear end of the oxygen production device 241, so that the particulate matter filtration device 244 can remove the particulate matters produced by the oxygen production device 241, further improving the purity of oxygen.

[0047] In this embodiment, the oxygen production device 241, the carbon removal device 242, the odor treatment device 243 and the particulate matter filtration device 244 are arranged in series, which not only does not affect the air treatment effect of each other, but also produces a synergistic effect, effectively improving the air treatment effect, and the centrifugal fan 22 realizes efficient air circulation treatment. It should be understood that when the oxygen production device 241, the carbon removal device 242, the odor treatment device 243 and the particulate matter filtration device 244 are all in a stopped working state, the centrifugal fan 22 is also shut down synchronously.

[0048] Preferably, the air pressurizing device 1 further comprises a safety valve (not shown in the figure, the same below) arranged between the air pressurizer 12 and the closed space 41, which is used to open the passage between the air pressurizer 12 and the closed space 41 when the output pressure of the air pressurizer 12 is greater than the preset pressure; the safety valve is also used to block the passage between the air pressurizer 12 and the closed space 41 when the output pressure of the air pressurizer 12 is less than the preset pressure. Therefore, the safety valve is in a normally closed state, and it will be automatically opened only after the air pressurizer 12 is started and reaches the preset pressure, realizing the air pressurizing process of the air pressurizer 12 to the closed space 41; when the air pressurizer 12 stops running or does not reach the preset pressure, the closed space 41 is automatically blocked by the safety valve to avoid the air in the closed space 41 from being discharged outward, and the air pressure in the closed space 41 is better maintained.

[0049] Preferably, one-way valves (not shown in the figure, the same below) are arranged in the first circulation channel 21 and the second circulation channel 31, which are used to control the air flow direction of the first circulation channel 21 and the second circulation channel 31, so that the air flow in the first circulation channel 21 and the second circulation channel 31 can only flow forward and cannot flow backward, ensuring the air treatment effect.

[0050] Preferably, the inlet end and the outlet end of the first circulation channel 21 are arranged at opposite ends of the closed space 41, i.e., the inlet end and the outlet end of the first circulation channel 21 are arranged far away from each other, so as to ensure that the air entering the first circulation channel 21 from the inlet end of the first circulation channel 21 is untreated air, which improves the air purification effect and effectively prolongs the length of the first circulation channel 21, facilitating the arrangement of the air purification assembly 24 on the first circulation channel 21.

[0051] Preferably, the inlet end of the first circulation channel 21 is arranged at the first end of the closed space 41, and the outlet end of the first circulation channel 21 and the outlet end of the air pressurizer 12, as well as the inlet end and the outlet end of the second circulation channel 31 are arranged at the second end of the closed space 41. Firstly, this layout can avoid the high-pressure air input by the air pressurizer 12 from directly flowing into the first circulation channel 21, so as to avoid the abnormal air pressure in the first circulation channel 21 and affect the air purification effect of the air purification assembly 24. Secondly, this layout can also avoid the high-temperature, low-temperature, humidified or dried air output by the temperature and humidity control device 3 from directly entering the first circulation channel 21, so as to avoid the abnormal temperature or humidity in the first circulation channel 21, ensure that the air purification assembly 24 is in a suitable air pressure, temperature and humidity environment, ensure the air purification effect, and also ensure that the air entering the temperature and humidity control device 3 is the air purified by the air purification device 2, so as to avoid the air quality in the second circulation channel 31 being too low to damage the temperature and humidity adjustment assembly 33.

[0052] As a second aspect, the utility model also provides a sealed cabin, including cabin body 4, the inner chamber of cabin body 4 is closed space 41, the sealed cabin still includes above-mentioned for closed space's air handling system, for closed space's air handling system is located on cabin body 4 and is connected with closed space 41. Through for closed space's air handling system to the inner chamber of cabin body 4 carries out air pressurization, purification and temperature and humidity adjustment processing, effectively improves the inner chamber environment of cabin body 4, satisfies use demand.

[0053] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An air handling system for confined spaces, characterized in that, It includes an air pressurization device (1), an air purification device (2), and a temperature and humidity control device (3); The air pressurization device (1) includes a pressure sensor (11) and an air booster (12) electrically connected to the pressure sensor (11). The pressure sensor (11) is used to be installed in the sealed space (41) and to detect the air pressure in the sealed space (41). The air booster (12) is used to start and pressurize the air in the sealed space (41) when the detection result of the pressure sensor (11) is lower than a preset value. The air purification device (2) includes a first circulation channel (21), a centrifugal fan (22), an air detection component (23), and an air purification component (24). The inlet and outlet ends of the first circulation channel (21) are both used to communicate with the sealed space (41). The centrifugal fan (22) is located at the outlet end of the first circulation channel (21) and is used to draw air from the inlet end of the first circulation channel (21). The air detection component (23) is used to be installed in the sealed space (41) and to detect the air quality in the sealed space (41). The air purification component (24) is located in the first circulation channel (21) and is electrically connected to the air detection component (23). The air purification component (24) is used to start and perform air purification treatment on the sealed space (41) when the detection result of the air detection component (23) is lower than a preset value. The temperature and humidity control device (3) includes a second circulation channel (31), a temperature and humidity detection component (32), and a temperature and humidity adjustment component (33). The inlet and outlet ends of the second circulation channel (31) are both used to communicate with the sealed space (41). The temperature and humidity detection component (32) is located at the inlet end of the second circulation channel (31) and is used to detect the temperature and humidity of the air in the sealed space (41). The temperature and humidity adjustment component (33) is located in the second circulation channel (31) and is electrically connected to the temperature and humidity detection component (32). The temperature and humidity adjustment component (33) is used to cool or heat the air, and to dry or humidify it according to the detection results of the temperature and humidity detection component (32).

2. The air handling system for confined spaces according to claim 1, characterized in that, The air detection component (23) includes an oxygen concentration detector (231) and a carbon dioxide concentration detector (232), and the air purification component (24) includes an oxygen generating device (241) electrically connected to the oxygen concentration detector (231) and a carbon removal device (242) electrically connected to the carbon dioxide concentration detector (232).

3. The air handling system for confined spaces according to claim 2, characterized in that, The carbon removal device (242) is connected in series with the oxygen generating device (241) and located at the rear end of the oxygen generating device (241).

4. The air handling system for confined spaces according to claim 2 or 3, characterized in that, The air detection component (23) further includes an odor detector (233), and the air purification component (24) further includes an odor treatment device (243) electrically connected to the odor detector (233), the odor treatment device (243) being located at the rear end of the oxygen generating device (241).

5. The air handling system for confined spaces according to claim 2 or 3, characterized in that, The air detection component (23) further includes a particulate matter detector (234), and the air purification component (24) further includes a particulate matter filter (244) electrically connected to the particulate matter detector (234), and the particulate matter filter (244) is located at the rear end of the oxygen generating device (241).

6. The air handling system for confined spaces according to claim 1, characterized in that, The air pressurization device (1) further includes a safety valve for being disposed between the air booster (12) and the sealed space (41). The safety valve is used to open the sealed space (41) when the output pressure of the air booster (12) is greater than a preset pressure, and the safety valve is also used to block the sealed space (41) when the output pressure of the air booster (12) is less than the preset pressure.

7. The air handling system for confined spaces according to claim 1, characterized in that, Both the first circulation channel (21) and the second circulation channel (31) are equipped with one-way valves.

8. The air handling system for confined spaces according to claim 1, characterized in that, The inlet and outlet ends of the first circulation channel (21) are respectively located at opposite ends of the enclosed space (41).

9. The air handling system for a confined space according to claim 8, characterized in that, The inlet end of the first circulation channel (21) is used to be located at the first end of the enclosed space (41); The outlet end of the first circulation channel (21) and the outlet end of the air booster (12), as well as the inlet end and outlet end of the second circulation channel (31), are all used to be located at the second end of the sealed space (41).

10. A sealed chamber, comprising a chamber body (4), characterized in that, The sealed chamber further includes an air handling system for a confined space as described in any one of claims 1 to 9, the air handling system for a confined space being disposed on the chamber body (4).

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