A micro-positive pressure internal circulation purification system with positive pressure protection

Abstract

This invention relates to a micro-positive pressure internal circulation purification system with positive pressure protection, belonging to the field of purification technology. Its main objective is to improve the safety and reliability of such systems. The micro-positive pressure internal circulation purification system includes: a positive pressure chamber; a purification chamber; a first circulation duct detachably connected to the air inlet of the positive pressure chamber and the air outlet of the purification chamber; a second circulation duct with its first port detachably connected to the air outlet of the positive pressure chamber; a circulation fan disposed in the purification chamber, its air inlet detachably connected to the second port of the second circulation duct, and its air outlet located inside the purification chamber; a positive pressure protection duct sleeved around the outer periphery of the second circulation duct; and a purification unit disposed within the purification chamber, used to purify pollutants from the gas flowing from the purification chamber inlet to the purification chamber outlet. This system prevents external polluted gas from leaking into the positive pressure chamber and the purification chamber.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the field of purification technology, in particular to an internal circulation purification system. BACKGROUND

[0002] When clean air in the outside world is polluted by pollutants endangering human health on a large scale, an isolation protection system needs to be urgently established for the personnel in the region to provide a safe and reliable clean living space for the personnel in the region.

[0003] Among them, the pollution accident usually has the characteristics of random location and random time, so that the isolation protection system should have the characteristics of rapid assembly and high mobility, so that the isolation protection system can be quickly transported from the equipment storage place to the pollution accident site and quickly assembled.

[0004] If the isolation protection system adopts a monolithic structure, although the sealing performance is good, the mobility is poor due to the large size. In order to improve the mobility of the isolation protection system, the isolation protection system is usually assembled by a plurality of components. After the plurality of components are packaged and transported to the accident site, the assembly of the isolation protection system is completed. Among them, the plurality of components are connected by air pipes. How to realize low-cost, efficient, rapid and stable sealing of each air pipe to prevent external polluted gas from entering the isolation protection system is a technical problem to be overcome by those skilled in the art. SUMMARY

[0005] Therefore, the embodiment of the present application provides an internal circulation purification system, which mainly aims to improve the safety and reliability of the internal circulation purification system.

[0006] To achieve the above object, the embodiment of the present application mainly provides the following technical scheme:

[0007] The embodiment of the present application provides a positive pressure protection micro-positive pressure internal circulation purification system, which comprises:

[0008] A positive pressure cabin;

[0009] A purification cabin;

[0010] A first circulation air pipe, which is detachably connected to the air inlet of the positive pressure cabin and the air outlet of the purification cabin;

[0011] A second circulation air pipe, the first port of the second circulation air pipe is detachably connected to the air outlet of the positive pressure cabin;

[0012] A circulation fan, which is arranged in the purification cabin, the air inlet of the circulation fan is detachably connected to the second port of the second circulation air pipe, and the air outlet of the circulation fan is located in the purification cabin;

[0013] A positive pressure protection air pipe is sleeved on the outer periphery of the second circulating air pipe.

[0014] The purification cabin is provided with a purification unit for purifying the gas flowing from the inlet to the outlet of the purification cabin.

[0015] The purposes of the embodiments of the present application and the technical problems thereof can also be further achieved by the following technical measures.

[0016] Optionally, the positive pressure protection micro-positive pressure internal circulation purification system further comprises:

[0017] A positive pressure maintaining device is in communication with the positive pressure protection air pipe.

[0018] Optionally, the positive pressure protection micro-positive pressure internal circulation purification system, wherein the air outlet of the circulating fan comprises a first outlet and a second outlet, the first outlet is in communication with the purification cabin, and the second outlet is in communication with the positive pressure protection air pipe.

[0019] Optionally, the positive pressure protection micro-positive pressure internal circulation purification system, wherein the second outlet is an annular air outlet surrounding the outer periphery of the air inlet of the circulating fan.

[0020] The first port of the second circulating air pipe is connected to the inner ring of the annular air outlet, the first port of the positive pressure protection air pipe is connected to the outer ring of the annular air outlet, the second port of the second circulating air pipe is in communication with the positive pressure cabin, and the air outlet between the second port of the positive pressure protection air pipe and the second port of the second circulating air pipe is blocked.

[0021] Optionally, the positive pressure protection micro-positive pressure internal circulation purification system, wherein the air resistance pressure of the purification unit is greater than the positive pressure in the positive pressure cabin.

[0022] Optionally, the positive pressure protection micro-positive pressure internal circulation purification system, wherein a negative pressure air channel is formed in the second circulating air pipe.

[0023] Optionally, the positive pressure protection micro-positive pressure internal circulation purification system, wherein a positive pressure air channel is formed in the first circulating air pipe.

[0024] Optionally, the positive pressure protection micro-positive pressure internal circulation purification system further comprises:

[0025] A functional device is arranged in the positive pressure cabin.

[0026] Optionally, the positive pressure protection micro-positive pressure internal circulation purification system further comprises:

[0027] A positive pressure maintaining device is in communication with the positive pressure chamber or the purification chamber.

[0028] Optionally, the positive pressure protection micro-positive pressure internal circulation purification system as described above, wherein the working pressure of the positive pressure chamber is 1.013x10 5 +20Pa to 1.013x10 5 +100Pa.

[0029] By means of the above technical solution, the positive pressure protection micro-positive pressure internal circulation purification system provided by the technical solution has at least the following advantages:

[0030] In the technical solution provided by the embodiment of the present application, the circulating fan is arranged at one side of the purification chamber. If the air resistance of the purification unit is too high, and the circulating fan is started, and the air inlet of the circulating fan generates negative pressure due to the fact that the resistance of the purification unit is greater than the positive pressure of the positive pressure chamber, the second circulating air pipe connected with the air inlet of the circulating fan is under negative pressure. Compared with the above-mentioned technology, since the positive pressure protection air pipe is sleeved outside the periphery of the second circulating air pipe, if the wall of the positive pressure protection air pipe is damaged, the gas in the positive pressure protection air pipe will leak to the outside, and the external contaminated gas will not leak into the positive pressure protection air pipe. If the wall of the second circulating air pipe is damaged, the gas in the positive pressure protection air pipe will leak into the second circulating air pipe, so that the external contaminated gas will not leak into the positive pressure chamber and the purification chamber.

[0031] The above description is only a summary of the technical solution of the present application. In order to more clearly understand the technical means of the embodiments of the present application, and to implement the content of the description, the preferred embodiments of the present application are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0032] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not considered as limiting the present application. Moreover, the same reference numerals are used to represent the same parts throughout the drawings. In the drawings:

[0033] Figure 1 is a structural schematic diagram of an internal circulation purification system provided by an embodiment of the present application;

[0034] Figure 2 is a structural schematic diagram of another positive pressure protection micro-positive pressure internal circulation purification system provided by an embodiment of the present application;

[0035] Figure 3 is a structural schematic diagram of another specific positive pressure protection micro-positive pressure internal circulation purification system provided by an embodiment of the present application;

[0036] Figure 4 is another structural schematic diagram of a micro-positive pressure internal circulation purification system of a positive pressure protection provided by an embodiment of the present application;

[0037] Figure 5 is another structural schematic diagram of a purification cabin of a micro-positive pressure internal circulation purification system of a positive pressure protection provided by an embodiment of the present application;

[0038] Figure 6 is another structural schematic diagram of a micro-positive pressure internal circulation purification system of a positive pressure protection provided by an embodiment of the present application;

[0039] Figure 7 is another structural schematic diagram of a micro-positive pressure internal circulation purification system of a positive pressure protection provided by an embodiment of the present application. DETAILED DESCRIPTION

[0040] To further explain the technical means and effects taken by the present application to achieve the purposes of the embodiments, the specific implementation, structure, features and effects of the internal circulation purification system according to the embodiments of the present application are described in detail below in combination with the drawings and preferred embodiments. In the following description, different "an embodiment" or "embodiments" do not necessarily refer to the same embodiment. In addition, specific features, structures or characteristics in one or more embodiments can be combined in any suitable form.

[0041] As shown in Figure 1 , the internal circulation purification system provided by the present embodiment includes a positive pressure cabin 10, a purification cabin 20, a first circulation air pipe 30, a second circulation air pipe 40 and a circulation fan 50. The first circulation air pipe 30 is detachably connected to the air inlet of the positive pressure cabin 10 and the air outlet of the purification cabin 20, respectively. The first port of the second circulation air pipe 40 is detachably connected to the air inlet of the purification cabin 20. The circulation fan 50 is arranged in the purification cabin 20, and the air inlet of the circulation fan 50 is connected to the second port of the second circulation air pipe 40.

[0042] Among them, the purification cabin 20 is provided with a purification unit 60, and the purification unit 60 is used for purifying pollutants in the gas flowing from the inlet to the outlet of the purification cabin 20.

[0043] It should be noted that the working pressure in the positive pressure cabin 10 is positive pressure, and the positive pressure should be understood as relative to the atmospheric environment outside the positive pressure cabin 10, that is, the working pressure in the positive pressure cabin 10 is greater than the pressure of the atmospheric environment outside the positive pressure cabin 10.

[0044] Under certain specific requirements, the working pressure in the positive pressure cabin 10 needs to be kept in a micro-positive pressure state, and the pressure can be 1.013x10 5 +20Pa to 1.013x105 +100Pa. The pressure maintaining mode of the positive pressure cabin 10 can be realized by a positive pressure maintaining device in communication with the positive pressure cabin 10 or the purification cabin 20. The positive pressure maintaining device can be a purification ventilation device capable of purifying the external contaminated air and then supplying the purified air into the positive pressure cabin 10, so that the pressure of the positive pressure cabin 10 is maintained at 1.013x10 5 +20Pa to 1.013x10 5 +100Pa. In one aspect, corresponding to a special use environment, the micro-positive pressure state is an important index considered for energy saving (a contaminated air area in a disaster, usually a power failure area, needs to be powered by fuel or a self-provided battery), and the micro-positive pressure state can greatly save energy compared with the high pressure state. In another aspect, the micro-positive pressure state can meet the pressure requirements of special equipment. In still another aspect, for a space suitable for personnel use, the comfort pressure requirements of personnel can be met.

[0045] The purification unit 60 can adopt filter materials such as activated carbon, and the filter material of the purification unit 60 will generate wind resistance after the start of the circulating fan 50. The inventor finds that for the micro-positive pressure cabin 10, if the wind resistance of the filter material is too high, the filter material resistance is greater than the micro-positive pressure of the positive pressure cabin 10, a negative pressure will appear at the air inlet of the circulating fan 50, and the second circulating air pipe 40 connected with the air inlet of the circulating fan 50 will also be in a negative pressure. If, the second circulating air pipe 40 pipe wall is damaged, or the connection between the second circulating air pipe 40 and the positive pressure cabin 10, and the connection between the second circulating air pipe 40 and the purification cabin 20 is not tightly sealed, the external contaminated gas will leak into the positive pressure cabin 10 and the purification cabin 20, which will increase the filter load of the filter material and reduce the service life of the purification unit 60. On the other hand, if the filter function of the filter material cannot filter the external contaminated gas, the uncontaminated gas will enter the positive pressure cabin 10 and the purification cabin 20 for circulation, causing a serious safety threat.

[0046] Based on the above scheme, Figures 2 to 7 An embodiment of the positive pressure protection micro-positive pressure internal circulation purification system provided by the present application is described below with reference to Figures 2 to 7 The positive pressure protection micro-positive pressure internal circulation purification system provided by one embodiment of the present application includes a positive pressure cabin 10, a purification cabin 20, a first circulating air pipe 30, a second circulating air pipe 40, a circulating fan 50, and a positive pressure protection air pipe 60.

[0047] The first circulating air duct 30 is detachably connected to the air inlet of the positive pressure chamber 10 and the air outlet of the purification chamber 20; the first port of the second circulating air duct 40 is detachably connected to the air outlet of the positive pressure chamber 10; a circulating fan 50 is disposed in the purification chamber 20, the air inlet of the circulating fan 50 is detachably connected to the second port of the second circulating air duct 40, and the air outlet of the circulating fan 50 is located inside the purification chamber 20; a positive pressure protective air duct 60 is sleeved on the outer periphery of the second circulating air duct 40. A purification unit 70 is provided inside the purification chamber 20, and the purification unit 70 is used to purify pollutants in the gas flowing from the purification chamber inlet to the purification chamber outlet.

[0048] In the technical solution provided by this embodiment of the invention, the circulating fan 50 is installed on one side of the purification chamber 20. If the air resistance of the purification unit 70 is too high, after starting the circulating fan 50, because the resistance of the purification unit 70 is greater than the positive pressure of the positive pressure chamber 10, a negative pressure will be generated at the air inlet of the circulating fan 50. In this case, the second circulating air duct 40 connected to the air inlet of the circulating fan 50 will be under negative pressure. Compared with the above technology, since the positive pressure protection air duct 60 is sleeved on the outer periphery of the second circulating air duct 40, if the wall of the positive pressure protection air duct 60 is damaged, the gas inside the positive pressure protection air duct 60 will leak to the outside, but the external polluted gas will not leak into the positive pressure protection air duct 60. If the wall of the second circulating air duct 40 is damaged, the gas inside the positive pressure protection air duct 60 will leak into the second circulating air duct 40, thereby preventing the external polluted gas from leaking into the positive pressure chamber 10 and the purification chamber 20.

[0049] In different embodiments, the positive pressure chamber 10 can be an isolation tent, a mobile cabin, a ward, a factory building, or an equipment compartment. It provides safety protection for the functional equipment installed within the positive pressure chamber 10, preventing external pollutants from entering and contaminating the equipment or causing health hazards to personnel. For example, in a micro-positive pressure internal circulation purification system with cooling requirements, the functional equipment may include refrigeration equipment. The compressor, expansion valve, and evaporator of the refrigeration equipment can be installed inside the positive pressure chamber 10, while the condenser can be installed outside. Similarly, in a micro-positive pressure internal circulation purification system with heating requirements, the functional equipment may include heating equipment installed inside the positive pressure chamber 10. When outside air is polluted, the functional equipment inside the positive pressure chamber 10 will not be contaminated by external pollutants, thus eliminating the need for cleaning. Of course, this is easily understood in conjunction with… Figure 5 As shown, the functional device 90 can also be installed inside the purification chamber 20, for example, between the purification unit 70 and the outlet of the purification chamber 20.

[0050] In some embodiments of the positive pressure maintenance scheme corresponding to the positive pressure chamber 10, the positive pressure maintenance device 81 is connected to the positive pressure chamber 10. Alternatively, in some embodiments, the positive pressure maintenance device 81 is connected to the purification chamber 20.

[0051] For larger positive pressure chambers 10, which are easier to transport, they can be made of flexible materials, such as inflatable isolation tents. For smaller positive pressure chambers 10, metal chambers can be used.

[0052] The circulating fan 50 can be fixed inside the purification chamber 20. Alternatively, the circulating fan 50 can be fixed outside the purification chamber 20, with the air inlet of the circulating fan 50 connected to the duct opening on the outer wall of the purification chamber 20.

[0053] The positive pressure maintaining equipment can be a purification ventilation device. The type of pollutant gas purified by the purification ventilation device can be the same as or different from the type of pollutant gas purified by the purification chamber 20. For example, the purification chamber 20 can filter particulate matter from the air, while the purification chamber 20 may not have the function of filtering particulate matter, but can filter gases that are harmful to human health.

[0054] In some embodiments, when the positive pressure chamber 10 has a separate equipment compartment, the positive pressure chamber 10 may include an equipment positive pressure chamber and a main positive pressure chamber, which are connected. The smaller equipment positive pressure chamber may be a metal box, while the larger main positive pressure chamber may be a flexible box.

[0055] When the circulating fan 50 is started in the positive pressure chamber, a negative pressure air duct is formed in the second circulating air duct 40, and a positive pressure air duct is formed in the first circulating air duct 30. If the wall of the first circulating air duct 30 is damaged, or if the connection between the first circulating air duct 30 and the positive pressure chamber 10 or the connection between the first circulating air duct 30 and the purification chamber 20 is not sealed tightly, the gas in the first circulating air duct 30 will leak to the outside, but will not cause external polluted gas to leak into the positive pressure chamber 10 or the purification chamber 20.

[0056] Among them, combined Figure 6 As shown, in order to maintain positive pressure within the positive pressure protective duct 60, the positive pressure protective duct 60 is connected to a positive pressure maintaining device. The positive pressure maintaining device can be a purification ventilation device 82, and the air outlet of the purification ventilation device 82 is connected to the positive pressure protective duct 60.

[0057] During implementation, the positive pressure protective air duct 60 is connected to the pipe opening of the positive pressure chamber 10 and the pipe opening of the purification chamber 20 respectively. If the connection between the positive pressure protective air duct 60 and the positive pressure chamber 10, and the connection between the positive pressure protective air duct 60 and the purification chamber 20 is not sealed tightly, the gas in the positive pressure protective air duct 60 will leak to the outside, but will not cause external polluted gas to leak into the positive pressure chamber 10 and the purification chamber 20.

[0058] If additional positive pressure maintaining equipment is used to supply air pressure to the positive pressure protection pipe, the cost is high and the assembly time is long. In the technical solution provided in this embodiment, combined with Figure 7 As shown, the air outlet of the circulating fan 50 includes a first outlet 51 and a second outlet 52. The first outlet 51 is connected to the purification chamber 20, and the second outlet 52 is connected to the positive pressure protective air duct 60. After the circulating fan 50 is started, part of the airflow drawn from the positive pressure chamber 10 by the circulating fan 50 is blown towards the first outlet 51 and enters the purification chamber 20, while part is blown towards the second outlet 52, thus maintaining positive pressure between the positive pressure protective duct and the wall of the second circulating air duct 40.

[0059] In specific implementations, the second outlet 52 and the positive pressure protection pipe can be connected via an additional connecting pipe. In some implementations, the second outlet 52 is an annular vent surrounding the air inlet of the circulating fan 50; the first port of the second circulating duct 40 is connected to the inner ring of the annular vent, the first port of the positive pressure protection duct 60 is connected to the outer ring of the annular vent, the second port of the second circulating duct 40 is connected to the positive pressure chamber 10, and the annular vent between the second port of the positive pressure protection duct 60 and the second port of the second circulating duct 40 is sealed. The positive pressure protection pipe and the second circulating duct 40 can be an integral pipe fitting, thus facilitating assembly. During assembly, the first end of the integral pipe fitting is connected to the purification chamber 20, so that the air inlet of the circulating fan 50 is connected to the second circulating duct 40, and the annular vent is connected to the positive pressure protection pipe. The second end of the integral pipe fitting is connected to the positive pressure chamber 10, so that the positive pressure chamber 10 is connected to the second circulating duct 40, and the positive pressure protection pipe is connected to the pipe opening outside the positive pressure chamber 10.

[0060] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0061] It is understood that the relevant features in the above-described devices can be referenced interchangeably. Furthermore, the terms "first," "second," etc., in the above embodiments are used to distinguish between embodiments and do not represent the superiority or inferiority of any particular embodiment.

[0062] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known structures and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0063] Similarly, it should be understood that, in order to simplify this disclosure and aid in understanding one or more of the various aspects of the invention, features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof in the above description of exemplary embodiments of the invention. However, this disclosed apparatus should not be construed as reflecting an intention that the claimed invention requires more features than expressly recited in each claim. Rather, as reflected in the following claims, inventive aspects lie in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into this detailed description, wherein each claim itself is a separate embodiment of the invention.

[0064] Those skilled in the art will understand that the components in the apparatus of the embodiments can be adaptively changed and disposed in one or more apparatuses different from that embodiment. Components in the embodiments can be combined into a single component, and furthermore, they can be divided into multiple sub-components. Except that at least some of such features are mutually exclusive, any combination can be employed to combine all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all components of any apparatus so disclosed. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature serving the same, equivalent, or similar purpose.

[0065] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments can be used in any combination. Various component embodiments of the invention can be implemented in hardware or in combinations thereof.

[0066] It should be noted that the above embodiments are illustrative of the invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of parts or components not listed in a claim. The word "a" or "an" preceding a part or component does not exclude the presence of a plurality of such parts or components. The invention can be implemented by means of a device comprising a plurality of different parts. In claims listing a plurality of parts, such parts may be embodied by the same item of part. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A positive pressure protected, micro-positively pressurized, inner-circulating, clean system, characterized in that, The system comprises: a positive pressure cabin; a purification cabin; a first circulating air pipe, which is detachably connected to the air inlet of the positive pressure cabin and the air outlet of the purification cabin respectively; a second circulating air pipe, the first port of which is detachably connected to the air outlet of the positive pressure cabin; a circulating air blower, which is arranged in the purification cabin, the air inlet of the circulating air blower is detachably connected to the second port of the second circulating air pipe, and the air outlet of the circulating air blower is located in the purification cabin; a positive pressure protection air pipe, which is sleeved on the outer periphery of the second circulating air pipe; wherein a purification unit is arranged in the purification cabin, which is used for purifying the gas flowing from the air inlet to the air outlet of the purification cabin, the purification unit comprises filter material, the resistance of which is greater than the micro-positive pressure in the positive pressure cabin, a positive pressure air duct is formed in the first circulating air pipe, and a negative pressure air duct is formed in the second circulating air pipe; the air outlet of the circulating air blower comprises a first outlet and a second outlet, the first outlet is connected to the purification cabin, and the second outlet is connected to the positive pressure protection air pipe; the second outlet is an annular air outlet which surrounds the air inlet of the circulating air blower; the first port of the second circulating air pipe is connected to the inner ring of the annular air outlet, the first port of the positive pressure protection air pipe is connected to the outer ring of the annular air outlet, the second port of the second circulating air pipe is connected to the positive pressure cabin, and the air outlet between the second port of the positive pressure protection air pipe and the second port of the second circulating air pipe is blocked.

2. The positive pressure protected, micro-positively pressure, inner-loop purifying system of claim 1, wherein, Further comprising: a positive pressure maintaining device, which is connected to the positive pressure protection air pipe.

3. The positive pressure protection micro-positive pressure internal circulation purification system according to claim 1, further comprising: a functional device, which is arranged in the positive pressure cabin. Further comprising:

4. The positive pressure protected, micro-positively pressure, inner-loop purifying system of claim 1, wherein, a positive pressure maintaining device, which is connected to the positive pressure cabin or the purification cabin.

5. The positive pressure protection micro-positive pressure internal circulation purification system according to claim 1, further comprising: a positive pressure maintaining device, which is connected to the positive pressure cabin or the purification cabin. The working pressure of the positive pressure cabin is 1.013 x 10 5 +20 Pa to 1.013 x 10 5 +100 Pa.

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