CN216790395U - Air conditioning system based on CO2 control - Google Patents

Air conditioning system based on CO2 control Download PDF

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Publication number
CN216790395U
CN216790395U CN202120543038.9U CN202120543038U CN216790395U CN 216790395 U CN216790395 U CN 216790395U CN 202120543038 U CN202120543038 U CN 202120543038U CN 216790395 U CN216790395 U CN 216790395U
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air
return
pipeline
indoor
conditioning system
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王龙
陈诗林
高江
胡海涛
董轶
王友民
赵舒斌
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China Railway 18th Bureau Group Co Ltd
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China Railway 18th Bureau Group Co Ltd
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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]
    • Y02B30/54—Free-cooling systems

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Abstract

The utility model discloses a method based on CO2Controlled air conditioning system using CO2The concentration sensor controls the wind speeds of the return fan and the blower in a linkage manner, so that the fresh air quantity is controlled, the total air supply quantity is ensured to be unchanged, and finally, the fresh air quantity and indoor CO are controlled2And (4) dynamically controlling the concentration. The method is characterized in that air is promoted to jet along the wall surface by utilizing an air supply mode of wall-attached jet, an air lake is formed in a person dense area by mixing fresh air and indoor air in a natural convection mode by utilizing the air pressure and density difference, and the air flow slowly moves upwards in a laminar-flow-like plug flow state to separate indoor dirty air from a person staying area. In order to ensure the cleanliness requirement of indoor air supply, an electrostatic dust removal device is additionally arranged in the air treatment unit, and a manual disassembly function and an O-shaped structure are arranged3The concentration limit value alarm device embodies economy and intelligence. In general, the utility model reduces indoor CO2Concentration, indoor airflow organization is optimized, indoor air cleanliness is improved, and a healthy and comfortable indoor air environment is created.

Description

Based on CO2Controlled air conditioning system
Technical Field
The utility model belongs to the field of air conditioning equipment, mainly relates to a primary return air conditioning system for office buildings, and particularly relates to a CO-based air conditioner system for improving indoor air quality2A controlled air conditioning system.
Background
Modern society life rhythm is fast, and operating pressure is big for people have to prolong the operating time at the office, and office's staff mostly engages in the mental work of certain intensity, and is comparatively sensitive to indoor environment parameter, and office environment still has certain effect to work efficiency when influencing indoor personnel health.
Found through a large amount of research and studyThe main influence factors of the indoor air quality of the public building are as follows: 1) CO22Concentration, when the indoor personnel are dense, the activities are frequent or the ventilation is not smooth, can cause indoor CO2The concentration is increased. Numerous studies have shown that: when indoor CO2The concentration is higher than 15L/m3In time, the human body feels uncomfortable and the work efficiency is reduced. 2) Fresh air volume, if the fresh air volume is introduced inadequately, will lead to indoor dirty air can't in time dilute the discharge, will influence indoor personnel's health and work efficiency. 3) Fresh air cleanliness is becoming more serious along with the pollution of outdoor environment air, and the particulate pollutant carried by outdoor new trend not only can not improve indoor air quality and can aggravate indoor pollution, influences indoor personnel work efficiency. 4) The air flow organization form, air supply parameters, air supply mode and the like all influence the indoor air flow field, and further influence the distribution of pollutants. If the air current organization is unreasonable, fresh air can not be delivered to a designated area, or part of fresh air forms a short circuit and directly flows back to an air outlet, so that energy waste is caused, and the comfort level of indoor workers is reduced.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems, the utility model makes up the defects of the prior art and provides a CO-based air conditioner for improving the indoor air quality2A controlled air conditioning system.
In order to achieve the purpose, the utility model adopts the following technical scheme.
The utility model is based on CO2The controlled air conditioning system comprises an air conditioning device and an automatic control device. The method is characterized in that: the air conditioning device includes: supply-air outlet, supply-air duct, return air inlet, return air duct, new trend pipeline, electrostatic precipitator device, air treatment unit, self-control device includes: fresh air valve, return air valve, CO2Concentration detector, O3Concentration alarm device. The air supply pipeline is connected with an indoor air supply outlet and the air handling unit, the fresh air pipeline is connected with the air handling unit from the outside, one end of the air return machine is connected with an air return inlet through an air return pipeline, and the other end of the air return machine is connected with the air handling unit; the fresh air valve and the return air valve are respectively arranged on the fresh air pipeline and the return air pipeline, and the CO is2Concentration ofThe detector is arranged in the return air pipeline; the electrostatic dust collection device and the device3The concentration alarm devices are all arranged in a box body of the air handling unit; the air supply outlet is arranged in a suspended ceiling of a room 500mm away from a wall, and the air return outlet is arranged in the suspended ceiling at the middle position of the room.
As a preferred aspect of the present invention, the air handling unit includes a unit housing, and a primary filter, an electrostatic dust removal device, a surface condenser, a blower, a heater, and a humidifier disposed in the unit housing, wherein the primary filter, the electrostatic dust removal device, the surface condenser, the blower, the heater, and the humidifier are sequentially disposed in the unit housing from left to right.
As another preferable mode of the present invention, CO is installed in the return air duct2A concentration detector, wherein O is arranged at the right lower part of the surface condenser3Concentration limit value alarm device.
In another preferred scheme of the utility model, the air return fan and the air blower both adopt double-speed fans.
As another preferable scheme of the utility model, a manual disassembling device is connected below the electrostatic dust removal device, and the device is convenient to clean through disassembly.
As another preferred scheme of the utility model, a water inlet pipeline and a water outlet pipeline are respectively connected to the lower parts of the surface condenser and the heater, and a cold water valve and a hot water valve are respectively arranged on the water outlet pipelines of the surface condenser and the heater.
As another preferable scheme of the utility model, the air treatment unit is additionally provided with an air conditioner automatic controller, and O in the air treatment unit3Concentration limit value alarm device and CO in return air pipeline2The concentration sensor is connected with an air-conditioning automatic controller through input signals, and the speed change control device of the air feeder, the speed change control device of the air return fan, the fresh air valve, the air return valve, the cold water valve, the hot water valve and the humidifier are connected with the air-conditioning automatic controller through output signals.
The utility model provides a catalyst based on CO2The controlled air conditioning system has the following advantages:
(1) the air supply port adopts a wall attachment jet flow air supply mode, an air lake is formed in a personnel dense area due to the wall attachment effect, indoor dirty air is brought to the upper part of a room in a natural convection mode and is separated from the inside of the room through the air return port. The air flow form improves the comfort level of indoor personnel and creates a comfortable and healthy indoor air environment.
(2) When more people are in the room, CO is passed2The concentration sensor controls the air speed of the air supply fan and the air return fan, increases the fresh air quantity, reduces the air return quantity and ensures the indoor air quality; when the indoor personnel are less, the CO is passed2The concentration sensor controls the wind speed of the air supply fan and the air return fan, increases the fresh air quantity, reduces the air return quantity, reduces the energy consumption of the air conditioner and improves the energy-saving effect.
(3) An electrostatic dust removal device is additionally arranged in the air handling unit, so that the cleanliness of the mixed fresh air sent into a room is improved.
(4) The electrostatic dust collection device is provided with the manual dismounting device, can be cleaned and recycled, reduces the use cost of equipment, and embodies the economical efficiency of the utility model.
(5) The electrostatic dust collector inevitably generates O in the process of ionizing air3，O3The hazard of (2) is not negligible. Therefore, the indoor air handling unit is provided with an O3Concentration limit alarm device controls opening of electrostatic precipitator device and stops, has better embodied intellectuality.
In summary, the present invention provides a method for producing a carbon dioxide based on CO2A controlled air conditioning system. By using CO2The concentration sensor controls the wind speed of the return fan and the blower in a linkage manner, so that the fresh air quantity is controlled, the total air supply quantity is ensured to be unchanged, and finally, the fresh air quantity and CO are controlled2And (4) dynamically controlling the concentration. In addition, the air is promoted to jet along the wall surface by utilizing the air supply mode of wall-attached jet, an air lake is formed in a person dense area by mixing fresh air and indoor air in a natural convection mode by utilizing the air pressure and density difference, and the air flow slowly moves upwards in a state similar to laminar piston flow to separate the indoor dirty air from a person staying area. To ensure the cleanliness of indoor air supplyThe requirement is met, an electrostatic dust removal device is additionally arranged in the air treatment unit, and a manual disassembly function and a disassembly ratio of 0 are also arranged3The concentration limit value alarm device embodies economy and intelligence. In general, the utility model reduces indoor CO2Concentration, indoor airflow organization is optimized, indoor air cleanliness is improved, and a healthy and comfortable indoor air environment is created.
Drawings
In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly apparent, the following description is made in conjunction with the accompanying drawings and the detailed description.
FIG. 1 shows a CO-based process of the present invention2Schematic diagram of the connection of the controlled air conditioning system to the room.
Fig. 2 is a schematic view of the internal structure of the air handling unit shown as part a in fig. 1.
FIG. 3 shows a CO-based version of the present invention2An automatic control system diagram of a controlled air conditioning system.
The notation in the figure is: 100 is a room, 1 is an air supply outlet, 2 is an air return inlet, 3 is an air supply pipeline, 4 is an air return pipeline, 5 is an air return fan, 6 is a fresh air pipeline, 7 is a fresh air valve, 8 is an air return valve, 9 is a primary filter, 10 is an electrostatic dust removal device, 11 is a surface condenser, 12 is an air supply fan, 13 is a heater, 14 is a humidifier, 15 is a cold water valve, 16 is a hot water valve, and 17 is O3Concentration limit alarm device, 18 is CO2The concentration sensor, 19 is a return air fan speed change control device, 20 is a blower speed change control device, 21 is a water inlet pipeline, and 22 is a water outlet pipeline.
Detailed Description
As shown in fig. 1, the air handling unit a is installed at an outdoor portion of a room 100, the air supply duct 3 connects the air handling unit a with the air supply opening 1, the air return duct 4 connects the air handling unit a with the air return opening 2, the air supply opening 1 is disposed in a ceiling of the room 500mm away from a wall, and the air return opening 2 is disposed in a ceiling of a middle position of the room. One end of a fresh air pipeline 6 is connected with outdoor fresh air, the other end of the fresh air pipeline is connected with an air handling unit a, a fresh air valve 7 is installed on the fresh air pipeline 6, and a return fan 5 and a return air valve 8 are installed on the outdoor part of the return air pipeline 4.
As shown in fig. 2, a primary filter 9, an electrostatic dust collector 10, a surface condenser 11, a blower 12, a heater 13, and a humidifier 14 are sequentially disposed in the air handling unit a from left to right, a water inlet pipe 21 and a water outlet pipe 22 are connected to the lower portions of the surface condenser 11 and the heater 13, a cold water valve 15 is disposed on the water outlet pipe 22 below the surface condenser 11, and a hot water valve 16 is disposed on the water outlet pipe 22 below the heater 13.
FIG. 3 shows a CO-based system2An automatic control system diagram of a controlled air conditioning system. O is3 Concentration limit alarm 17 and CO in return air duct 42The concentration sensor 18 is connected with an air conditioner automatic controller by an input signal; the variable speed control device 19 of the air return fan 5, the variable speed control device 20 of the blower 12, the fresh air valve 7, the air return valve 8, the cold water valve 15, the hot water valve 16 and the humidifier 14 are connected with an air conditioner automatic controller through output signals.
And (3) automatic linkage control starting sequence control: the fresh air valve 7 and the return air valve 8 are opened, the air feeder 12 and the return air feeder 5 are started, the cold water valve 15 and the hot water valve 16 are opened, and the humidifier 14 is opened; shutdown sequence control: the humidifier 14 is turned off, the cold water valve 15 and the hot water valve 16 are closed, the blower 12 and the return fan 5 are turned off, and the fresh air valve 7 and the return air valve 8 are closed.
The working principle of the utility model is as follows: firstly, determine the indoor CO2Concentration value when CO2The concentration is higher than 15L/m3When it is CO2The concentration sensor controls the speed change control device 20 of the air blower and the speed change control device 19 of the return air blower in a linkage manner, the air blower 12 runs at a high speed, the return air blower 5 runs at a low speed, the fresh air quantity is increased, and the indoor air quality is guaranteed. When CO is present2The concentration is lower than 8L/m3When it is CO2The concentration sensor controls the speed change control device 20 of the air blower and the speed change control device 19 of the return fan in a linkage manner, the air blower 12 runs at a low speed, the return fan 5 runs at a high speed, the fresh air quantity is reduced, and the air conditioning system runs in an energy-saving manner.
After being mixed with return air, the fresh air and the return air are firstly purified by fine particles through a primary filter 9 and an electrostatic dust removal device 10, and the purified air passes through a surface condenser 11, a blower 12 and a humidifier 13 in sequence to reach the indoor required air supply temperature and humidity. The mixed fresh air is sent into the room through the air supply outlet 1 through the air supply pipeline 3, the mixed fresh air continuously flows downwards along the wall surface jet flow, the mixed fresh air and the indoor air form an air lake in the indoor central area due to the wall attachment effect, the air lake slowly rises in a natural convection mode, the airflow slowly moves upwards in a state similar to laminar piston flow, indoor dirty air is separated from a human staying area, the indoor dirty air enters the air return pipeline 4 through the air return inlet 2, and finally the return air is mixed with the outdoor fresh air again in the air processing unit a through the air return fan 5.
Wherein, the electrostatic dust collector 10 can generate O in the ionization process3When O is present3When the concentration limit value alarm device 17 sends out an alarm signal, the electrostatic dust collection device 10 stops working until the alarm signal is removed. In addition, the electrostatic precipitator 10 may be manually disassembled, cleaned, and reused.
Although the embodiments of the present invention have been disclosed above, it is not limited to the contents of the utility models set forth in the description and embodiments. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the utility model not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.

Claims (9)

1. Based on CO2The controlled air conditioning system comprises an air conditioning device and an automatic control device; the method is characterized in that: the air conditioner includes: the air conditioner comprises an air supply outlet (1), an air supply pipeline (3), an air return inlet (2), an air return pipeline (4), a fresh air pipeline (6), an electrostatic dust collection device (10) and an air handling unit (a); the automatic control device comprises: fresh air valve (7), return air valve (8), CO2Concentration sensor (18), O3A concentration limit alarm device (17); the air supply pipeline (3) is connected with the indoor air supply outlet (1) and the air processing unit (a), the fresh air pipeline (6) is connected with the air processing unit (a) from the outside, one end of the air return machine (5) is connected with the air return opening (2) through the air return pipeline (4), and the other end of the air return machine is connected with the air processing unit (a); the fresh air valve (7) and the return air valve (8) are respectively arranged on the fresh air pipeline (6) and the return air pipeline (4), and the CO is2The concentration sensor (18) is arranged on the return airInside the pipeline (4); the electrostatic dust collection device (10) and the dust collector O3The concentration limit value alarm devices (17) are all arranged in a box body of the air handling unit (a).
2. CO-based composition according to claim 12Controlled air conditioning system characterized by: the air supply outlet (1) is arranged in a suspended ceiling of a room 500mm away from a wall.
3. A CO-based composition according to claim 12Controlled air conditioning system characterized by: the air return opening (2) is arranged in a suspended ceiling in the middle of a room.
4. A CO-based composition according to claim 12Controlled air conditioning system characterized by: the air treatment unit (a) comprises a unit box body, and a primary filter (9), an electrostatic dust collection device (10), a surface condenser (11), a blower (12), a heater (13) and a humidifier (14) which are sequentially arranged in the unit box body.
5. A CO-based composition according to claim 42Controlled air conditioning system characterized by: CO is arranged in the return air pipeline (4)2A concentration sensor (18) with O arranged below the surface condenser (11)3Concentration limit value alarm device (17).
6. A CO-based composition according to claim 42Controlled air conditioning system characterized by: the air return fan (5) and the air feeder (12) both adopt double-speed fans.
7. A CO-based composition according to claim 42Controlled air conditioning system characterized by: and a manual dismounting device is connected below the electrostatic dust removal device (10).
8. A CO-based composition according to claim 42Controlled air conditioning system characterized by: the above-mentionedThe lower parts of the surface condenser (11) and the heater (13) are respectively connected with a water inlet pipeline (21) and a water outlet pipeline (22); the water outlet pipelines of the surface condenser (11) and the heater (13) are respectively provided with a cold water valve (15) and a hot water valve (16).
9. A CO-based composition according to claim 42Controlled air conditioning system characterized by: the air treatment unit (a) is additionally provided with an air conditioner automatic controller, and O in the air treatment unit (a)3Concentration limit value alarm device (17) and CO in return air pipeline (4)2The concentration sensor (18) is connected with an air conditioner automatic controller, and the speed change control device (20) of the air feeder, the speed change control device (19) of the air return fan, the fresh air valve (7), the air return valve (8), the cold water valve (15), the hot water valve (16) and the humidifier (14) are connected with the air conditioner automatic controller.
CN202120543038.9U 2021-03-16 2021-03-16 Air conditioning system based on CO2 control Active CN216790395U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120543038.9U CN216790395U (en) 2021-03-16 2021-03-16 Air conditioning system based on CO2 control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120543038.9U CN216790395U (en) 2021-03-16 2021-03-16 Air conditioning system based on CO2 control

Publications (1)

Publication Number Publication Date
CN216790395U true CN216790395U (en) 2022-06-21

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Application Number Title Priority Date Filing Date
CN202120543038.9U Active CN216790395U (en) 2021-03-16 2021-03-16 Air conditioning system based on CO2 control

Country Status (1)

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CN (1) CN216790395U (en)

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