CN115751547A - Indoor environment control system - Google Patents
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- CN115751547A CN115751547A CN202211183238.3A CN202211183238A CN115751547A CN 115751547 A CN115751547 A CN 115751547A CN 202211183238 A CN202211183238 A CN 202211183238A CN 115751547 A CN115751547 A CN 115751547A
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 180
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 135
- 239000001301 oxygen Substances 0.000 claims abstract description 135
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 135
- OLBVUFHMDRJKTK-UHFFFAOYSA-N [N].[O] Chemical compound [N].[O] OLBVUFHMDRJKTK-UHFFFAOYSA-N 0.000 claims abstract description 118
- 239000007789 gas Substances 0.000 claims abstract description 102
- 238000000926 separation method Methods 0.000 claims abstract description 92
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 90
- 238000009423 ventilation Methods 0.000 claims abstract description 79
- 230000007613 environmental effect Effects 0.000 claims abstract description 46
- 239000012535 impurity Substances 0.000 claims abstract description 20
- 230000000694 effects Effects 0.000 claims abstract description 9
- 230000008859 change Effects 0.000 claims abstract description 7
- 230000001766 physiological effect Effects 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 11
- 238000005057 refrigeration Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 5
- 239000013589 supplement Substances 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 241000238631 Hexapoda Species 0.000 claims description 2
- 239000000356 contaminant Substances 0.000 claims description 2
- 231100000331 toxic Toxicity 0.000 claims description 2
- 230000002588 toxic effect Effects 0.000 claims description 2
- 241000607479 Yersinia pestis Species 0.000 claims 1
- 230000002401 inhibitory effect Effects 0.000 claims 1
- 230000002147 killing effect Effects 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- 230000001276 controlling effect Effects 0.000 description 19
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 14
- 229910002092 carbon dioxide Inorganic materials 0.000 description 7
- 239000001569 carbon dioxide Substances 0.000 description 7
- 239000012855 volatile organic compound Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000003584 silencer Effects 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QRSFFHRCBYCWBS-UHFFFAOYSA-N [O].[O] Chemical compound [O].[O] QRSFFHRCBYCWBS-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910052704 radon Inorganic materials 0.000 description 1
- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention belongs to the technical field of environmental protection, and particularly relates to an indoor environment control system. The system of the invention comprises: the oxygen-nitrogen separation system is arranged on site in the target space and is used for carrying out oxygen-nitrogen separation on the background gas of oxygen and nitrogen; the input gas of the oxygen-nitrogen separation system is natural atmosphere outside the target protection space, and the output gas is rich nitrogen or rich oxygen; the nitrogen-rich and oxygen-rich are used for being sent into a target protection space so as to change the oxygen-nitrogen ratio of a target environment and realize the effects of suppressing fire or providing a human-living oxygen-rich environment to improve the physiological effect of a human body; also comprises a corresponding air supply loop, a temperature and humidity control and internal and external circulating air supply loop, an organized discharge loop, an environment monitor and a purifier. The system disclosed by the invention overcomes the change of external environmental conditions by controlling organized ventilation, and realizes the multi-target environmental control requirements of controllable target protection space temperature, humidity, oxygen-nitrogen ratio and impurity gas.
Description
Technical Field
The invention belongs to the technical field of environmental protection, and particularly relates to an indoor environment control system, in particular to a multi-target environment control system for controlling the ventilation of organized gas and realizing the requirements of target protection space on temperature, humidity, oxygen-nitrogen ratio, impurity gas and the like.
Background
The environmental control of the relatively closed space usually relates to various functional requirements such as temperature, humidity and even oxygen-nitrogen ratio, impurity gas content and the like in the target space, so that the comfort and safety of the environment in the target space can be guaranteed, and the requirements of physiological functions of a human body can be met.
Based on the environmental control as above requirement, collect traditional new trend system, air conditioner because of receiving the leakage quantity influence of target protection space itself, often be difficult to reach the requirement, when especially needing to carry out high accuracy accuse temperature, accuse humidity, gaseous impurity dispel and oxygen nitrogen proportion adjustment to the target space, because of the external environment (typical, such as wind speed, area of contact) and the leakproofness of target space itself, often difficult to reach effective control objective, need urgently to replace this kind of environmental control system that is close to unorganized ventilation to organized gas ventilation, realize the environmental control of various functional requirements such as target protection space temperature, humidity, oxygen nitrogen proportion, gaseous impurity to satisfy various requirements of comfort level, security and human physiology efficiency of human living environment.
Disclosure of Invention
In view of the above, the present invention provides an environmental control system for controlling the ventilation of organized gases to achieve a multi-objective environmental control of the requirements of target protected space temperature, humidity, oxygen nitrogen ratio, impurity gases, and the like.
The indoor environment control system provided by the invention replaces the current environmental control of the target protection space close to the unorganized ventilation by controlling the organized ventilation, can overcome the problem that the external environmental condition changes to obtain the multi-target environment control requirements of controllable temperature, humidity, oxygen-nitrogen ratio, impurity gas and the like of the target protection space, and has the structure shown in figure 1 and mainly comprises the following components:
(1) At least 1 set of oxygen-nitrogen separation system installed on site in the target space, mainly used for oxygen-nitrogen separation in the background gas of oxygen and nitrogen; the input gas of the oxygen-nitrogen separation system is natural atmosphere outside the target protection space, and the output gas is rich nitrogen or rich oxygen; the nitrogen-rich and oxygen-rich air is sent into a target protection space to change the oxygen-nitrogen ratio of a target environment, and the effects of suppressing fire or providing a human-living oxygen-rich environment to improve the physiological effect of a human body can be realized;
(2) At least 1 set of gas supply loop for sending the nitrogen-rich or oxygen-rich gas generated by the oxygen-nitrogen separation system into the target protection space;
(3) At least 1 set of the buffer storage tank can compress the nitrogen-rich or oxygen-rich gas produced by the oxygen-nitrogen separation system during leisure time and send the nitrogen-rich or oxygen-rich gas into the buffer storage tank, the buffer storage tank is provided with a gas supply loop to the target protection space, and the nitrogen-rich or oxygen-rich gas in the buffer storage tank can be sent into the target protection space through the gas supply loop according to requirements;
(4) At least 1 set of temperature and humidity control and internal and external circulating air supply loops are used for supplementing a part of external circulating fresh air to enter a target protection space, performing internal circulating ventilation on the target protection space, and adjusting the temperature and humidity of the target protection space;
(5) At least 1, a tissue discharge loop is sleeved on the target protection space, and is used for sending gas in the target protection space out of the gas supply loop outside the target protection space in a tissue and flow adjustable manner, so as to control the target protection space to form a micro-positive pressure environment;
(6) At least 1 loop of environmental monitor for monitoring pressure, temperature, humidity, oxygen content and impurity gas content (typically, carbon dioxide, VOCs, etc.) of the target protected space and controlling the field device;
(7) Preferably, but not necessarily, a purifier for purifying the particulate matter, toxic and harmful impurity gases contained in the target protected space according to the customer's requirements, and preferably connected to the internal circulation ventilation circuit.
By adopting the system, organized ventilation is carried out on the target protection space, micro positive pressure type ventilation is formed on the target protection space, and the total organized ventilation amount of the target protection space is larger than the sum of the natural leakage amount and the organized emission amount of the target protection space under the micro positive pressure condition no matter how the wind speed and the static pressure outside the target protection space are; wherein the total amount of the organized ventilation input to the target protected space is the amount of nitrogen-rich or oxygen-rich air generated by the on-site oxygen-nitrogen separation system and consists of the aforementioned normal atmosphere from the outside circulation ventilation.
And, because the organized ventilation is a special ventilation which changes the oxygen-nitrogen ratio, but not the natural fresh air ventilation, the oxygen-nitrogen ratio deviates from the natural fresh air (the normal atmosphere contains about 21% oxygen by volume and 79% nitrogen), when the oxygen-nitrogen separation system sends the generated nitrogen-rich air and the external circulation fresh air into the target protection space, typically, an oxygen-poor environment with the oxygen content of 14-16% by volume is formed, which can be used for suppressing fire, and when the oxygen-nitrogen separation system sends the generated oxygen-rich air and the external circulation fresh air into the target protection space, typically, an oxygen-rich environment with the oxygen content of 21-40% by volume is formed, which can be used for improving the physiological efficacy of human body.
The indoor environment control system provided by the invention comprises:
the oxygen-nitrogen separation system and the gas supply loop are provided;
an oxygen-nitrogen separation system is used for directly taking gas from the atmosphere and realizing oxygen-nitrogen separation, nitrogen-rich gas is discharged as waste gas when oxygen-rich gas is prepared, and oxygen-rich gas is discharged as waste gas when nitrogen-rich gas is prepared; aiming at different requirements of the target protection space and through the arranged gas supply loops with different functions, the oxygen-nitrogen ratio of the target protection space is changed to achieve different purposes of controlling human settlements:
the nitrogen-rich gas of different purities is output according to the environment control requirement of the target protection space, and typically, if the target protection space is expected to form a safe environment which can restrain fire inhabitants, then, the oxygen-nitrogen separation system typically generates 90-99 percent of nitrogen-rich, wherein:
one way, as the normal compensation air quantity loop, directly sending the nitrogen-rich generated by the oxygen-nitrogen separation system into the target protection space, preferably, when the air supply loop works, the oxygen-nitrogen separation system generates 90-95% of nitrogen-rich to obtain lower operation cost, and when the air supply loop works, the air supply flow rate and the total air quantity of the natural atmosphere sent by the other external circulation ventilation loop at least should not be less than the natural leakage quantity of the target environment space, and a certain micro-positive pressure (typically, such as establishing a positive pressure protection environment of 5-1000 pa) can be established in the target protection space, and wherein, the nitrogen-rich injected into the target protection space by the oxygen-nitrogen separation system is mainly 90-95% of nitrogen-rich, and the oxygen-containing volume percentage of the target protection space can be maintained between 14-16% together with the natural atmosphere sent by the other external circulation ventilation loop to inhibit fire;
in addition, as an emergency compensation air flow loop, nitrogen-rich generated by the oxygen-nitrogen separation system is pressurized and stored into a buffer tank to be sent into a target protection space according to the requirement of an air supply loop shown in the figure, when the air supply loop works, the oxygen-rich generated by the oxygen-nitrogen separation system generates 95-99.9% of nitrogen-rich to achieve better effect, and when the air supply loop works, the air supply loop usually serves as a storage standby loop, can be stored for standby in advance after the equipment is started, can be directly injected into the target protection space to accelerate the achievement of the environmental control target, and can quickly achieve 14-16% of oxygen-containing volume of the target protection space to suppress the occurrence of fire, of course, the loop can be started to quickly inject nitrogen-rich air in an emergency state (typically, such as fire occurrence) to achieve lower oxygen-rich proportion, typically, such as control at 14-16% of nitrogen, to suppress the fire, even planned evacuation of people and combined with organized ventilation (typically, such as personnel and closing organized ventilation) to achieve the function of quickly extinguishing the high-rich air, achieve lower nitrogen-rich air proportion, typically, such as control of the nitrogen-rich air to achieve the 95% of fire, and even more than 95% of nitrogen, and achieve the function of suppressing the fire, and the insect damage of the like.
Similar to the foregoing, oxygen-enriched gas of different purities is output according to the environmental requirements of the target protected space, typically, if the target environmental space is expected to form a comfortable oxygen-enriched environment, then typically, the oxygen-nitrogen separation system produces 23-95% oxygen enrichment, wherein:
one path, as a normal compensation air quantity loop, directly sending the oxygen-enriched air generated by the oxygen-nitrogen separation system into the target protection space, preferably, when the air supply loop works, the oxygen-enriched air generated by the oxygen-nitrogen separation system is 23-50% to obtain lower operation cost, and when the air supply loop works, the air supply flow rate of the air supply loop and the total air quantity of the natural atmosphere sent by the other external circulation ventilation loop are at least not less than the natural leakage quantity of the target environment space, and a certain micro-positive pressure (typically, such as establishing a positive pressure protection environment of 5-1000 pa) can be established in the target protection space, and wherein, the oxygen-enriched air injected into the target protection space by the oxygen-oxygen separation system is mainly the oxygen-enriched air of 23-50%, and the oxygen-enriched air can be maintained between 23-40% by volume in the target protection space together with the natural atmosphere sent by the other external circulation ventilation loop, so as to create a comfortable oxygen-enriched environment and improve the physiological efficacy of human body;
in addition, the other path is used as an emergency compensation air quantity loop, the oxygen-enriched air generated by the oxygen-nitrogen separation system is pressurized and stored in a buffer storage tank, and is sent into a target protection space according to the requirement of the air supply loop shown in the figure, when the air supply loop works, the oxygen-enriched air generated by the oxygen-nitrogen separation system is 50-95% to obtain better effect, and when the air supply loop works, the air supply loop is usually used as a storage standby loop and can be stored for standby in advance after the equipment is started, the air supply loop can be directly injected into the target protection space to accelerate the achievement of the environmental control target, the oxygen-containing volume percentage of the target protection space is realized more quickly by 23-40%, a comfortable oxygen-enriched environment is created, and the physiological efficacy of a human body is improved.
(II) temperature and humidity control and an internal and external circulating air supply loop are performed;
the target is adjusted according to the oxygen-nitrogen proportion of the target protection space, the input nitrogen-rich or oxygen-rich air supply flow is combined, the target requirement is adjusted according to the oxygen-nitrogen proportion, the internal circulation ventilation and temperature and humidity control loop at least supplements a part of external circulation fresh air, the total amount of the internal circulation ventilation and temperature and humidity control loop is at least not less than the natural leakage amount and organized discharge amount of the target environment space, so that the target protection space establishes a certain micro-positive pressure (typically, such as establishing a positive pressure protection environment of 5-1000 pa), and the loop performs internal circulation ventilation on the target protection space and can adjust the temperature and humidity of the target protection space.
(III) regarding organized drainage circuits;
the gas in the target protection space is organically discharged, because the total amount of the input nitrogen-rich or oxygen-rich gas supply flow and at least a supplemented part of external circulation fresh air is at least not less than the natural leakage amount and the organized discharge amount of the target environment space, the target protection space can be controlled to form a micro-positive pressure environment by adjusting and controlling the discharge flow, and typically, a positive pressure protection environment of 5-1000 pa is established.
And (IV) organized ventilation as in the previous (one) to (three), wherein the input of the organized ventilation is nitrogen or oxygen rich generated by an oxygen-nitrogen separation system and the natural atmosphere supplemented by an external circulation ventilation, and the output of the organized ventilation is natural leakage and organized discharge under the established micro-positive pressure environmental condition, and the following design principle is followed:
air volume balance: nitrogen-rich or oxygen-rich flow generated by the oxygen-nitrogen separation system + natural atmospheric flow supplemented by external circulation ventilation = natural leakage amount + organized discharge amount under the established micro-positive pressure environmental condition;
oxygen quantity balance: the nitrogen-rich or oxygen-rich flow rate generated by the oxygen-nitrogen separation system is multiplied by the oxygen-containing percentage plus the natural atmospheric flow rate supplemented by the external circulation ventilation is multiplied by 21 percent (the normal natural atmospheric oxygen-containing percentage) = (the nitrogen-rich or oxygen-rich flow rate generated by the oxygen-nitrogen separation system is multiplied by the natural atmospheric flow rate supplemented by the external circulation ventilation) multiplied by the oxygen-containing percentage required to be established in the target protection space;
the natural leakage amount under the established micro-positive pressure environmental condition can be determined through testing or simulation calculation according to the wind speed and the static pressure of the external environment;
when the living environment is involved, the ventilation quantity required by the average person is determined according to the standard;
the minimum discharge amount can be determined according to the above;
by solving the above equation, the nitrogen-rich or oxygen-rich flow, the minimum external circulation fresh air supplement amount and the organized discharge amount required by the oxygen-nitrogen separation system can be determined.
As previously mentioned, the environmental monitor can monitor the pressure, temperature, humidity, oxygen content, and contaminant gas content (typically, carbon dioxide, VOCs, etc.) of the target protected space, and can control the field devices, including:
monitoring the pressure of a target protection space, testing and determining the natural leakage amount, and controlling the organized discharge amount;
the temperature and humidity of a target protection space are monitored, and refrigeration and heating equipment of temperature and humidity control and an internal and external circulating air supply loop is started;
the oxygen content of the target protection space is monitored, and the oxygen-nitrogen separation system, the oxygen-nitrogen separation circuit and the air supply circuit thereof as well as the internal and external circulating air supply circuit are controlled to perform organized ventilation on the target protection space;
controlling a purifier installed in the target protection space to purify the environment by monitoring the contents (typically, such as carbon dioxide, VOCs and the like) of particulate matters and impurity gases in the target protection space;
therefore, by controlling the ventilation of the organized gas, the multi-target environmental control requirements of controllable target protection space temperature, humidity, oxygen-nitrogen ratio, impurity gas and the like can be obtained by overcoming the change of external environmental conditions.
Drawings
FIG. 1 is a diagrammatic representation of an environmental control system of the present invention.
Reference numbers in the figures: 1 is a target protection space, 2 is an oxygen-nitrogen separation system, 3 is an environment monitor, and 4 is a purifier; QTV101, QTV102A, QTV102B, QTV103 and QTV104 are proportional control valves; the DTV101, the DTV102 are pressure regulating valves; QDV102A, QDV102B, QDV102C, QDV102D are automatic on-off valves; QV101 is a ball valve; v101, V102 are manual cut-off valves; AB01, AB02 are pressure boosting devices; PV101 is a buffer tank; TC104 is a cooling/heating device (with drain valve); XYQ103 is a muffler.
Detailed Description
The above-mentioned contents of the present invention are further described in detail with reference to the accompanying drawings, but it should not be understood that the scope of the above-mentioned subject matter of the present invention is limited to the following examples, and all technical contents realized based on the above-mentioned contents of the present invention belong to the scope of the present invention.
The structure of the environment control system designed by the invention is shown in figure 1, and comprises: a target protection space 1, an oxygen-nitrogen separation system 2, an environmental monitor 3 and a purifier 4.
An oxygen-nitrogen separation gas supply circuit: one path, a normal gas supply loop is arranged between the oxygen and nitrogen separation system 2 and an interface 2-1 of the target protection space 1, a proportional control valve QTV101, a pressure control valve DTV101 and a stop valve V101 are sequentially arranged on the gas supply loop, and the nitrogen-rich/oxygen-rich gas generated by the oxygen and nitrogen separation system 2 is sent into the target protection space 1 through the gas supply loop and the interface 2-1; the proportional control valve is used for controlling supply flow, the pressure control valve is used for conveying stable flow at stable pressure after pressure reduction, and the stop valve is used for controlling the flow more accurately in cooperation with the proportional control valve; the other path is a compression, storage and emergency air supply loop from the oxygen-nitrogen separation system 2 to an interface 2-2 of the target protection space 1, and the loop is sequentially provided with a proportional control valve QTV102A, a boosting device AB01, an automatic switch valve QDV102C, a proportional control valve QTV102B, a control valve DTV102, an automatic pressure switch valve QDV102D and a V102 manual stop valve; automatic switch valves QDV102A and QDV102B are arranged at the front and the back of the AB01 boosting equipment; a ball valve QV101 is connected between the automatic switch valve QDV102C and the proportional control valve QTV102B, and then a buffer storage tank PV101 is connected (a storage loop is formed); the nitrogen-rich/oxygen-rich gas generated by the oxygen-nitrogen separation system 2 is compressed, stored and supplied for emergency through the loop; when the oxygen-nitrogen separation system 2 works, the nitrogen-rich/oxygen-rich gas is sent into the target protection space from the interface 2-2 of the target protection space 1 through the loop; when the oxygen-nitrogen separation system 2 is started or idled, the circuit can send the nitrogen-rich/oxygen-rich gas generated by the oxygen-nitrogen separation system 2 into the PV101 buffer tank for storage and standby, automatic switch valves QDV102A and QDV102B connected to the front and the back of the AB01 boosting equipment are used for independently starting the boosting equipment AB01 for use, the QDV102B can be opened to release pressure to protect the equipment when overpressure occurs, and the maintenance and the manual debugging of ordinary equipment are convenient, and the gas in the storage tank PV101 can quickly release the stored and standby gas to the target protection space 1 through the gas supply circuit; the proportional control valve designed for the air supply loop is used for controlling the supply flow, the pressure control valve is used for conveying stable flow at stable pressure after pressure reduction, the stop valve is used for matching with the proportional control valve to control the flow more accurately, and the automatic switch valve is used for opening/cutting off the air supply loop.
Temperature and humidity control and internal and external circulating air supply loop: a pressure boosting device AB02 and a refrigerating/heating device (with a drain valve) TC104 which are arranged between the interface 4-1 of the target protection space 1 and the interface 4-2 of the target protection space 1 are also connected with a proportional control valve QTV104 before the pressure boosting device AB02, and the proportional control valve QTV104 is communicated with the atmosphere; the interface 4-2 is connected with a purifier 4 in the target protection space 1; forming a temperature and humidity control and internal and external circulating air supply loop. The gas in the target protection space 1 can be extracted from the interface 4-1 of the target protection space 1, the internal circulation of the refrigeration/heating (including the discharge of condensed water) is carried out through the pressure boosting device AB02 and the refrigeration/heating device (with a drain valve) TC104 and then returned to the interface 4-2 of the target protection space 1, and the gas is preferably connected to the purifier 4 and then released to the target protection space 1 to form the internal circulation, so that the refrigeration/heating is completed, and the temperature and the humidity of the target protection space 1 are controlled; meanwhile, natural atmosphere outside the accessed target protection space 1 is used for taking gas in front of the pressure boosting device AB02, the flow is controlled by the proportional control valve QTV104, the cooling/heating (including discharging condensate water) is carried out by the cooling/heating device (with a drain valve) TC104, the natural atmosphere from the outside is sent to the interface 4-2 of the target protection space 1 and is preferably accessed to the purifier and then is released to the target protection space 1 to form external circulation ventilation, at least a part of the natural atmosphere is supplemented, the cooling/heating is completed at the same time, and the temperature and humidity control requirements of the target protection space 1 are met.
(III) organized discharge circuit: the device mainly comprises a proportional control valve QTV103 and a silencer XYQ103 which are sequentially connected with an interface 3-1 of a target protection space 1; the loop carries out organized discharge on the gas in the target protection space 1 from the 3-1 interface to the outside of the target protection space 1; because the total amount of the input nitrogen-rich or oxygen-rich air supply flow and at least a supplemented part of the external circulation fresh air is at least not less than the natural leakage amount and the organized discharge amount of the target environment space 1, the target protection space 1 can be controlled to form a micro-positive pressure environment by adjusting and controlling the discharge flow, typically, a positive pressure protection environment of 5-1000 pa is established, wherein the proportional control valve is used for adjusting the discharge flow through the QTV103 and maintaining the micro-positive pressure in the target protection space 1, and the silencer XYQ103 is used for eliminating fluid noise.
Referring to fig. 1, the oxygen-nitrogen ratio of the target protected space 1 can be simply changed by using the system of the present invention to achieve different purposes of controlling human habitation environment according to different requirements of the target protected space 1:
depending on the requirements of the target protected space 1, nitrogen-rich gas of different purities is output by the oxygen-nitrogen separation system 2, and typically, if the target protected space 1 is expected to form a safe environment that can suppress fire, the oxygen-nitrogen separation system 2 typically generates 90 to 99% of nitrogen-rich, wherein:
one way, as the normal compensation air volume loop, directly feed the nitrogen-rich generated by the oxygen-nitrogen separation system 2 into the target protection space 1, preferably, when the air feed loop works, the oxygen-nitrogen separation system generates 90-95% of nitrogen-rich to obtain lower operation cost, and when the air feed loop works, the air feed flow rate and the total air volume of the natural atmosphere fed by the other external circulation ventilation loop at least should be not less than the natural leakage rate of the target environment space, and can enable the target protection space 1 to establish a certain micro-positive pressure (typically, such as establishing a positive pressure protection environment of 5-1000 pa), and wherein, the nitrogen-rich injected into the target protection space 1 by the oxygen-nitrogen separation system 2 is mainly 90-95% of nitrogen-rich, and can maintain the oxygen volume percentage of the target protection space between 14-16% together with the natural atmosphere fed by the other external circulation ventilation loop to inhibit fire from happening;
in addition, as an emergency compensation air flow loop, nitrogen-rich generated by the oxygen-nitrogen separation system 2 is pressurized and stored in a buffer tank PV101 to be fed into the target protection space 1 as shown in the figure according to the requirement of an air supply loop, when the air supply loop works, the oxygen-rich is 95-99.9% by volume by the oxygen-nitrogen separation system, so that better effect is achieved, and when the air supply loop works, usually as a storage standby loop, the air supply loop can be stored for standby in advance after the equipment is started, the target protection space 1 can be directly injected to achieve the achievement of the environmental control goal, the target protection space 1 can be rapidly achieved, the oxygen-containing volume percentage is 14-16% by volume, so that fire is restrained, of course, the loop can be started to rapidly inject and evacuate air under the emergency state (typically, such as fire alarm occurrence), so that the lower oxygen-rich proportion is achieved, typically, such as control is 14-16%, so that fire is restrained, even, planned personnel are rapidly injected and combined with organized ventilation (typically, such as personnel and organized ventilation is closed), so that the nitrogen-rich air is achieved, the higher-rich nitrogen-rich air is achieved, the typical nitrogen-rich air is controlled, the nitrogen-rich air is achieved, the lower-enriched air is achieved, the functions of achieving the 95% of rapidly achieved, such as the 95% of the fire hazard suppression, the 95% of the nitrogen-enriched air is achieved, the 95% and the destruction is achieved, and the functions of rapidly achieved, and the rapid fire hazard elimination of the high-eliminating function of achieving the high-enriched air is achieved.
Similar to the foregoing, depending on the requirements of the target protected space 1, oxygen-enriched gas of different purities is output by the oxygen-nitrogen separation system 2, typically, if the target environment space is desired to form a comfortable oxygen-enriched environment, then typically, the oxygen-nitrogen separation system produces 23-95% oxygen enrichment, where:
one way, as a normal compensation air quantity loop, directly feeding the oxygen-enriched air generated by the oxygen-nitrogen separation system 2 into the target protection space 1, preferably, when the air feeding loop works, the oxygen-enriched air generated by the oxygen-nitrogen separation system 2 should generate 23-50% of oxygen-enriched air to obtain lower operation cost, and when the air feeding loop works, the air feeding flow rate and the total air quantity of the natural atmosphere fed by the other external circulation ventilation loop should be at least not less than the natural leakage quantity of the target protection space 1, and a certain micro-positive pressure (typically, such as establishing a positive pressure protection environment of 5-1000 pa) can be established in the target protection space 1, and wherein, the oxygen-enriched air injected into the target protection space by the oxygen-nitrogen separation system 2 is mainly the oxygen-enriched air of 23-50%, and can maintain the oxygen-enriched air volume percentage of the target protection space 1 between 23-40% together with the natural atmosphere fed by the other external circulation ventilation loop, so as to create a comfortable oxygen-enriched environment, and improve the physiological efficacy of human body.
In addition, the other path is used as an emergency compensation air volume loop, the oxygen-enriched air generated by the oxygen-nitrogen separation system 2 is pressurized and stored in the buffer tank PV101 and is sent into the target protection space 1 according to the requirement of the air supply loop as shown in the figure, when the air supply loop works, the oxygen-enriched air generated by the oxygen-nitrogen separation system 2 is 50-95% of the oxygen-enriched air, so that a better effect is achieved, and when the air supply loop works, the air supply loop is usually used as a storage standby loop, can be stored for standby in advance after the equipment is started, can be directly injected into the target protection space 1 to accelerate the achievement of the environmental control target, and can quickly achieve the oxygen-containing volume percentage of the target protection space of 23-40%, so that a comfortable oxygen-enriched environment is created, and the physiological efficacy of a human body is improved.
Referring to fig. 1, in combination with the system of the present invention, under the condition of controlling the organized ventilation performed in the target protected space 1, not only the oxygen-nitrogen ratio of the target protected space 1 is effectively changed, but also the temperature, humidity and impurity gas content (typically, such as carbon dioxide, VOCs, etc.) are controlled, so as to achieve different purposes of controlling human living environment:
(1) Temperature and humidity control and internal and external circulation ventilation: adjusting a target according to the oxygen-nitrogen ratio of the target protection space 1, combining the input nitrogen-rich or oxygen-rich air supply flow, adjusting the target requirement according to the oxygen-nitrogen ratio, and supplementing at least a part of external circulation fresh air by an internal circulation ventilation and temperature and humidity control loop, wherein the total amount of the internal circulation ventilation and temperature and humidity control loop is at least not less than the natural leakage amount and organized discharge amount of the target protection space 1, so that a certain micro-positive pressure (typically, such as establishing a positive pressure protection environment of 5-1000 pa) is established in the target protection space 1, and the loop performs internal circulation ventilation on the target protection space 1 and can perform temperature and humidity adjustment on the target protection space 1;
(2) Organized discharge: the gas in the target protection space 1 is organically discharged, because the total amount of the input nitrogen-rich or oxygen-rich gas supply flow and at least a part of supplemented external circulation fresh air is at least not less than the natural leakage amount and the organized discharge amount of the target environment space, the target protection space 1 can be controlled to form a micro-positive pressure environment by adjusting and controlling the discharge flow, and typically, a positive pressure protection environment of 5-1000 pa is established;
(3) The organized ventilation as described above, the input of which is the nitrogen-rich or oxygen-rich air generated by the oxygen-nitrogen separation system 2, and the natural atmosphere supplemented by the external circulation ventilation, the output of which is the natural leakage amount and the organized discharge amount under the established micro-positive pressure environmental condition, follows the following design principle:
air volume balance: nitrogen-rich or oxygen-rich flow generated by the oxygen-nitrogen separation system 2 + natural atmospheric flow supplemented by external circulation ventilation = natural leakage amount + organized discharge amount under the established micro-positive pressure environmental condition;
oxygen quantity balance: the nitrogen-rich or oxygen-rich flow rate generated by the oxygen-nitrogen separation system 2 × the oxygen-containing percentage + the natural atmospheric flow rate supplemented by the external circulation ventilation × 21% (the normal natural atmospheric oxygen-containing percentage) = (the nitrogen-rich or oxygen-rich flow rate generated by the oxygen-nitrogen separation system + the natural atmospheric flow rate supplemented by the external circulation ventilation) × the oxygen-containing percentage required to be established in the target protection space;
the natural leakage amount under the established micro-positive pressure environmental condition can be determined through testing or simulation calculation according to the wind speed and the static pressure of the external environment;
when the living environment is involved, the ventilation quantity required by the average person is determined according to the standard;
the minimum discharge amount can be determined according to the above;
by solving the above equations, the nitrogen-rich or oxygen-rich flow rate, the minimum external circulation fresh air supplement amount and the organized discharge amount required by the oxygen-nitrogen separation system 2 can be determined.
As the foregoing process is implemented, the monitoring and control are implemented by the environmental monitor 3, which integrates on-site sensing, can monitor the pressure, temperature, humidity, oxygen content and impurity gas content (typically, such as carbon dioxide, VOCs, etc.) of the target protected space 1, and can control on-site devices, including:
monitoring the pressure of the target protection space 1, testing and determining the natural leakage amount, and controlling the organized discharge amount;
by monitoring the temperature and the humidity of the target protection space 1, refrigeration and heating equipment of temperature and humidity control and an internal and external circulating air supply loop is started;
the oxygen content of the target protection space 1 is monitored, and the oxygen-nitrogen separation system 2, the gas supply loop thereof and the internal and external circulating air supply loop are controlled to perform organized ventilation on the target protection space 1;
the purifier 4 installed in the target protection space is controlled to purify the environment by monitoring the content of particulate matters and impurity gases (typically, carbon dioxide, VOCs and the like) in the target protection space 1;
therefore, by controlling the ventilation of the organized gas, the multi-target environmental control requirements of the controllable target protection space 1 such as temperature, humidity, oxygen-nitrogen ratio, impurity gas and the like can be obtained by overcoming the change of the external environmental conditions.
The invention is preferably applied to the application of changing the oxygen-nitrogen ratio of a target protection space to achieve a specific environmental control target, but does not represent that other environments cannot be controlled by the method of the invention (typical application occasions such as carbon dioxide in a control room, specific radon gas, nuclear biochemical protection and the like).
The above-described embodiments illustrate only some of the essential features of the invention, and it will be appreciated by those skilled in the art that although the invention has been described in part in connection with the accompanying drawings, this is merely an example of an application or method of the invention, and that all other variations which do not depart from the essence of this patent are intended to be within the scope of this patent, which is limited only by the scope of the appended claims.
Claims (8)
1. The utility model provides an indoor environmental control system which characterized in that, through control organized ventilation, overcomes the external environment condition and changes, realizes controllable target protection space temperature, humidity, oxygen nitrogen proportion, gaseous multiple target environmental control requirement of impurity, includes:
(1) At least 1 set of oxygen-nitrogen separation system installed on site in the target space for separating oxygen and nitrogen in the background gas of oxygen and nitrogen; the input gas of the oxygen-nitrogen separation system is natural atmosphere outside the target protection space, and the output gas is rich nitrogen or rich oxygen; the nitrogen-rich and oxygen-rich air is sent into the target protection space to change the oxygen-nitrogen ratio of the target environment and realize the effects of suppressing fire or providing a human-living oxygen-rich environment to improve the physiological effect of a human body;
(2) At least 1 set of gas supply loop for feeding the nitrogen-rich or oxygen-rich gas generated by the oxygen-nitrogen separation system into the target protection space;
(3) At least 1 set of the device can compress the nitrogen-rich or oxygen-rich gas produced by the oxygen-nitrogen separation system during leisure time and send the compressed nitrogen-rich or oxygen-rich gas into the buffer storage tank, the buffer storage tank is provided with a gas supply loop to the target protection space, and the nitrogen-rich or oxygen-rich gas in the buffer storage tank is sent into the target protection space through the gas supply loop according to requirements;
(4) At least 1 set of temperature and humidity control and internal and external circulating air supply loops are used for supplementing a part of external circulating fresh air to enter a target protection space, performing internal circulating ventilation on the target protection space, and adjusting the temperature and humidity of the target protection space;
(5) At least 1 sleeve is provided with a tissue discharge loop which is used for sending the gas in the target protection space out of the gas supply loop outside the target protection space in a tissue and flow-adjustable manner so as to control the target protection space to form a micro-positive pressure environment;
(6) At least 1 ring of environment monitor, is used for monitoring the pressure, temperature, humidity, oxygen content and impurity gas content of the protective space of goal, and control the field device;
(7) And the purifier is used for purifying particulate matters and toxic and harmful impurity gases contained in the target protection space according to the requirement of a client and is connected into the internal circulation ventilation loop.
2. The indoor environment control system of claim 1, wherein the organized ventilation of the target protected space forms a micro positive pressure ventilation of the target protected space, and the total amount of the organized ventilation of the target protected space is larger than the sum of the natural leakage amount and the organized discharge amount of the target protected space under the micro positive pressure condition no matter the wind speed and the static pressure outside the target protected space; wherein the total amount of the organized ventilation input to the target protected space is the amount of nitrogen-rich or oxygen-rich air generated by the on-site oxygen-nitrogen separation system and consists of the aforementioned normal atmosphere from the outside circulation ventilation.
3. The indoor environment control system of claim 1, wherein when the oxygen-nitrogen separation system feeds the generated nitrogen-rich and the externally circulated fresh air into the target protection space, an oxygen-poor environment having an oxygen volume percentage of 14 to 16% is formed for suppressing a fire; when the oxygen-nitrogen separation system sends the generated oxygen enrichment and the external circulation fresh air into the target protection space, an oxygen enrichment environment with the oxygen volume percentage of 21-40% is formed and is used for improving the physiological effect of the human body.
4. The indoor environment control system according to claim 1, wherein in the oxygen-nitrogen separation system and the gas supply circuit, the oxygen-nitrogen separation system is configured to directly extract gas from the atmosphere to perform oxygen-nitrogen separation, and when oxygen is enriched, nitrogen is discharged as the exhaust gas, and when nitrogen is enriched, oxygen is discharged as the exhaust gas;
aiming at different requirements of the target protection space and through the arranged gas supply loops with different functions, the oxygen-nitrogen ratio of the target protection space is changed to achieve different purposes of controlling the human-occupied environment:
(1) Outputting nitrogen-rich gas with different purities according to the environment control requirement of the target protection space, and if the target protection space is expected to form a safe environment which can be occupied by people and can inhibit fire, generating 90-99% of nitrogen-rich gas by the oxygen-nitrogen separation system, wherein:
one way is used as a normal compensation air quantity loop and directly sends the nitrogen-rich generated by the oxygen-nitrogen separation system into a target protection space; when the air supply loop works, the oxygen-nitrogen separation system generates 90-95% of nitrogen-rich air to obtain lower operation cost, and when the air supply loop works, the air supply flow rate of the air supply loop and the total air flow rate of natural atmosphere fed by another external circulation ventilation loop are at least not less than the natural leakage rate of a target environment space, so that a certain micro-positive pressure is established in the target protection space, and the nitrogen-rich air injected into the target protection space by the oxygen-nitrogen separation system is mainly the 90-95% of nitrogen-rich air, and can maintain the oxygen volume percentage of the target protection space between 14-16% together with the natural atmosphere fed by the other external circulation ventilation loop so as to inhibit fire;
the other path is used as an emergency compensation gas flow loop, nitrogen-rich gas generated by the oxygen-nitrogen separation system is pressurized and stored to a buffer tank, and is sent to a target protection space by a gas supply loop according to requirements, and when the gas supply loop works, the oxygen-nitrogen separation system generates 95-99.9% of nitrogen-rich gas to obtain a better effect; when the gas supply loop works, the gas supply loop is used as a storage standby loop, is stored for standby in advance after the equipment is started, is directly injected into a target protection space to accelerate the achievement of an environmental control target, and more quickly realizes that the oxygen volume percentage of the target protection space is 14-16% to inhibit the occurrence of fire; the circuit is started to quickly inject nitrogen-rich air in an emergency state to realize lower oxygen-nitrogen ratio, namely, the oxygen-nitrogen ratio is controlled to be 14-16% so as to suppress fire; even, planned evacuation of personnel in combination with organized ventilation; the high-purity nitrogen-rich air is quickly injected to realize lower oxygen-nitrogen proportion, and the volume percentage of the target protection space is controlled to reach more than 95 percent and even 99 percent so as to realize the functions of quickly eliminating fire, killing insect pests and inhibiting mold;
(2) Outputting oxygen-enriched gas with different purities according to the environment control requirement of the target protection space; if the target environment space is expected to form a comfortable oxygen-enriched environment, the oxygen-enriched separation system can generate 23-95% of oxygen enrichment, wherein:
one way is used as a normal compensation air quantity loop and directly sends the rich oxygen generated by the oxygen-nitrogen separation system into a target protection space; when the gas supply loop works, the oxygen-nitrogen separation system generates 23-50% of oxygen-enriched gas so as to obtain lower operation cost; when the air supply loop works, the air supply flow and the total air volume of natural atmosphere fed into the air supply loop through the other external circulation ventilation loop are at least not less than the natural leakage volume of the target environment space, and a certain micro-positive pressure can be established in the target protection space; and wherein, the oxygen enrichment injected into the target protection space of the oxygen-nitrogen separation system is mainly oxygen enrichment of 23-50%, and can maintain the oxygen volume percentage of the target protection space between 23-40% together with the natural atmosphere sent by the other external circulation ventilation loop, so as to create a comfortable oxygen enrichment environment and improve the physiological efficacy of human body;
the other path is used as an emergency compensation air quantity loop, oxygen enrichment generated by the oxygen-nitrogen separation system is pressurized and stored in a buffer storage tank, and is sent to a target protection space according to the requirement of an air supply loop, and when the air supply loop works, the oxygen enrichment of 50-95% is generated by the oxygen-nitrogen separation system, so that a better effect is achieved; and when the air supply loop works, the air supply loop is used as a storage standby loop and is stored for standby in advance after the equipment is started, the air supply loop can be directly injected into the target protection space to accelerate the achievement of the environmental control target, and the oxygen volume percentage of the target protection space is more quickly realized to be 23-40%, so that a comfortable oxygen-enriched environment is created, and the physiological efficacy of a human body is improved.
5. The indoor environment control system according to claim 4, wherein the temperature and humidity control and inside and outside circulation air supply circuit adjusts the target in accordance with the oxygen-nitrogen ratio of the target protected space, and adjusts the target demand in accordance with the oxygen-nitrogen ratio in combination with the flow rate of the supplied nitrogen-rich or oxygen-rich air, and the inside circulation ventilation and temperature and humidity control circuit supplements at least a part of the outside circulation fresh air, and the total amount of the both is not less than the natural leakage amount and the organized discharge amount of the target protected space, so that a certain micro positive pressure is established in the target protected space, and the circuit performs inside circulation ventilation in the target protected space and can adjust the temperature and humidity of the target protected space.
6. The indoor environment control system of claim 5, wherein the organized exhausting circuit is configured to organically exhaust the gas in the target protected space, and the total amount of the input nitrogen-rich or oxygen-rich air supply flow and at least a part of the supplemented external circulation fresh air is not less than the natural leakage amount and the organized exhausting amount of the target protected space, and the target protected space is controlled to form the micro-positive pressure environment by adjusting and controlling the exhausting flow.
7. An indoor environmental control system according to claim 6, wherein said organized ventilation with inputs of nitrogen or oxygen rich generated by the oxygen nitrogen separation system and natural atmosphere supplemented by the external circulation ventilation with outputs of natural leakage and organized discharge under established micro-positive pressure environmental conditions follows the following principles:
air volume balance: nitrogen-rich or oxygen-rich flow generated by the oxygen-nitrogen separation system + natural atmospheric flow supplemented by external circulation ventilation = natural leakage amount + organized discharge amount under the established micro-positive pressure environmental condition;
oxygen quantity balance: the nitrogen-rich or oxygen-rich flow rate generated by the oxygen-nitrogen separation system x the oxygen-containing percentage + the natural atmospheric flow rate supplemented by the external circulation ventilation x 21% = (the nitrogen-rich or oxygen-rich flow rate generated by the oxygen-nitrogen separation system + the natural atmospheric flow rate supplemented by the external circulation ventilation) x the oxygen-containing percentage required to be established in the target protection space;
the natural leakage amount under the established micro-positive pressure environmental condition can be determined through testing or simulation calculation according to the wind speed and the static pressure of the external environment;
when the human living environment is involved, the ventilation volume required by the human is determined according to the standard;
the minimum discharge amount can be determined according to the above;
by solving the above equation, the nitrogen-rich or oxygen-rich flow rate, the minimum external circulation fresh air supplement amount and the organized discharge amount required by the oxygen-nitrogen separation system can be determined.
8. The indoor environmental control system of claim 7, wherein the environmental monitor is configured to monitor pressure, temperature, humidity, oxygen content, and contaminant gas content of the target protected space and to control the field device, comprising:
monitoring the pressure of a target protection space, testing and determining the natural leakage amount, and controlling the organized discharge amount;
the temperature and humidity of a target protection space are monitored, and refrigeration and heating equipment of temperature and humidity control and an internal and external circulating air supply loop is started;
the oxygen-nitrogen separation system, the oxygen-nitrogen separation circuit and the air supply circuit thereof as well as the internal and external circulating air supply circuit are controlled by monitoring the oxygen content of the target protection space, and organized ventilation is carried out on the target protection space;
controlling a purifier arranged in the target protection space to purify the environment by monitoring the contents of particulate matters and impurity gases in the target protection space;
by controlling the ventilation of the organized gas, the change of external environmental conditions is overcome, and the multi-target environmental control requirements of controllable target protection space temperature, humidity, oxygen-nitrogen ratio and impurity gas are obtained.
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| CN202211183238.3A CN115751547A (en) | 2022-09-27 | 2022-09-27 | Indoor environment control system |
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