CN113357729A - VAV variable air volume experimental system - Google Patents

VAV variable air volume experimental system Download PDF

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Publication number
CN113357729A
CN113357729A CN202010136226.XA CN202010136226A CN113357729A CN 113357729 A CN113357729 A CN 113357729A CN 202010136226 A CN202010136226 A CN 202010136226A CN 113357729 A CN113357729 A CN 113357729A
Authority
CN
China
Prior art keywords
air volume
vav
air
exhaust
exhaust pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010136226.XA
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Chinese (zh)
Inventor
董提育
颜德倩
曹超
陈祥奇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zokinre Xiamen Environment Technology Co ltd
Original Assignee
Zokinre Xiamen Environment Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zokinre Xiamen Environment Technology Co ltd filed Critical Zokinre Xiamen Environment Technology Co ltd
Priority to CN202010136226.XA priority Critical patent/CN113357729A/en
Publication of CN113357729A publication Critical patent/CN113357729A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/52—Indication arrangements, e.g. displays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/75—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity for maintaining constant air flow rate or air velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • F24F2110/70—Carbon dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • F24F2110/72—Carbon monoxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • F24F2110/76—Oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/10—Pressure
    • F24F2140/12—Heat-exchange fluid pressure

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Fluid Mechanics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • Ventilation (AREA)

Abstract

A VAV variable air volume experimental system is arranged in an indoor space and consists of a VAV variable air volume controller, a new/exhaust air pipe connected with the VAV variable air volume controller, a blower/exhaust fan connected with the VAV variable air volume controller, a high-position exhaust pipe and a side exhaust pipe; the invention adjusts the indoor air by adopting the VAV variable air volume system, the air volume sent into the room adapts to the change of the load, and the invention can automatically adjust the running energy consumption of the fan and reduce the installed capacity of the fan; the tail end of the VAV system can adjust the air supply quantity according to the deviation of the indoor temperature and a set value, so that the system has good independent adjustment and control performance; the system has better flexibility, is easy to modify and expand, and is particularly suitable for buildings with variable patterns.

Description

VAV variable air volume experimental system
Technical Field
The invention belongs to the technical field of air management systems, and particularly relates to a VAV variable air volume experimental system with a good purification function on air in a closed space.
Background
Generally speaking, a laboratory belongs to a relatively closed space, various physical or chemical experiments are carried out in the closed space, pungent odor is generated certainly, and physical and psychological health of experimenters is affected if the odor is not discharged in time; therefore, 24-hour exhaust systems are installed in numerous laboratories, and aiming at the existing exhaust systems, the structures of the exhaust systems are complex, only exhaust is performed, and the function of exchanging fresh air is not achieved.
Disclosure of Invention
The invention aims to provide a VAV variable air volume experimental system which is reasonable in structural design and strong in fresh air exchange function aiming at the defects of the prior art.
The variable air volume system is a system which adjusts the indoor temperature and humidity by changing the air volume to adapt to the load change.
The VAV variable air volume experimental system is arranged in an indoor space and is characterized in that: the VAV air conditioner consists of a VAV variable air volume controller, a fresh air/exhaust air pipe connected with the VAV variable air volume controller, a blower/exhaust fan connected with the VAV variable air volume controller, a high-level exhaust pipe and a side exhaust pipe.
The high-position exhaust pipe is arranged at the top of the room, and the side exhaust pipe is vertically arranged from bottom to top according to the indoor side wall.
The top surface of the indoor space is respectively provided with a fresh air inlet and a top surface high-level air outlet; the fresh air inlet is connected with a fresh air/exhaust air pipe, and the top surface high-level exhaust outlet is connected with a high-level exhaust pipe.
And a low-level air outlet is arranged below the side air exhaust pipe, and a side high-level air outlet is arranged above the side air exhaust pipe.
And a first variable constant air volume regulating valve is arranged on the new/exhaust air pipe.
And the high-position exhaust pipe is provided with a second variable constant air volume adjusting valve and a sensor.
And the side exhaust pipes are respectively provided with a third variable fixed air volume regulating valve.
The side exhaust pipe is communicated with the high-position exhaust pipe, and the tail end of the high-position exhaust pipe is connected with the power system or the unpowered system.
Compared with the prior art, the invention has the beneficial effects that: the invention adjusts the indoor air by adopting the VAV variable air volume system, the air volume sent into the room adapts to the change of the load, and the invention can automatically adjust the running energy consumption of the fan and reduce the installed capacity of the fan; the tail end of the VAV system can adjust the air supply quantity according to the deviation of the indoor temperature and a set value, so that the system has good independent adjustment and control performance; the system has better flexibility, is easy to modify and expand, and is particularly suitable for buildings with variable patterns.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
In the figure: 1. a blower/exhaust fan; 2. VAV variable air volume controller; 3. a first variable constant air volume regulating valve; 4. a fresh/exhaust air duct; 5. a fresh air port; 6. a low-level air outlet; 7. a side exhaust duct; 8. a side high-level air outlet; 9. a variable fixed air volume regulating valve III; 10. a high-level exhaust duct; 11. a sensor; 12. a second variable constant air volume regulating valve; 13. a top high-level air outlet; 14. an indoor space.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a VAV variable air volume experimental system is installed in an indoor space 14, and is composed of a VAV variable air volume controller 2, a fresh/exhaust air duct 4 connected to the VAV variable air volume controller 2, a blower/exhaust fan 1 connected to the VAV variable air volume controller 2, a high-level exhaust duct 10, and a side exhaust duct 7; the high-position exhaust pipe 10 and the side exhaust pipe 7 respectively exhaust air in the indoor space 14, and the tail ends of the high-position exhaust pipe 10 and the side exhaust pipe 7 are respectively connected with a second variable fixed air quantity regulating valve 12 and a third variable fixed air quantity regulating valve 9, so that the air quantity drawn indoors can be better controlled, and the indoor air can keep a normal air quantity and pressure.
The high-position exhaust duct 10 is arranged at the top of the room, and the side exhaust duct 7 is vertically arranged from bottom to top along the indoor side wall.
The top surface of the indoor space 14 is respectively provided with a fresh air inlet 5 and a top surface high-level air outlet 13; the fresh air port 5 is connected with a fresh air/exhaust air pipe 4, and the top surface high-level exhaust port 13 is connected with a high-level exhaust pipe 10; the fresh air outside is conveyed into the indoor space through the fresh/exhaust air pipe 4; the top high-level air outlet 13 on the top mainly changes the direction of the air flow and extracts the harmful gas with density less than that of the air.
A low-level air outlet 6 is arranged below the side air outlet pipe 7, and a side high-level air outlet 8 is arranged above the side air outlet pipe and mainly used for changing the airflow direction and extracting harmful gas with density smaller than that of air; the low-level air outlet 6 mainly changes the direction of air flow and extracts harmful gas with density higher than that of air.
And a variable fixed air quantity regulating valve I3 is arranged on the new/exhaust air pipe 4, so that the amount of fresh air input into the indoor space can be adjusted according to the requirement.
The high-level exhaust pipe 10 is provided with a second variable constant air volume adjusting valve 12 and a sensor 11, and the sensor 11 can detect carbon monoxide, carbon dioxide, oxygen and the like; the second variable air volume regulating valve 12 can output the amount of indoor air to the outdoor space according to the requirement, and the control is completely carried out through the display of a valve meter arranged on the valve so as to achieve the appropriate indoor air volume and air pressure.
And the side exhaust pipes 7 are respectively provided with a variable fixed air volume regulating valve III 9.
The side exhaust duct 7 is communicated with the high-position exhaust duct 10, and the tail end of the high-position exhaust duct 10 is connected with a power system or an unpowered system.
The system is suitable for any indoor space, can effectively improve indoor air and timely change fresh air, and keeps indoor reasonable air volume and air pressure.
The working principle of the invention is as follows: after the exhaust fan and the blower are started, the low-level exhaust outlet 6 mainly changes the airflow direction and extracts harmful gas with density larger than that of air; the top high-level air outlet 13 and the side high-level air outlet 8 mainly change the airflow direction and extract harmful gases with density less than that of air; the VAV variable air volume controller 2 is used for controlling the first variable fixed air volume adjusting valve 3, the second variable fixed air volume adjusting valve 12 and the second variable fixed air volume adjusting valve 12 to ensure the balance of air flow organization in the indoor space, namely, the amount of fresh air entering from the fresh air/exhaust air pipe 4 and the amount of air exhausted from the side exhaust pipe 7 and the high-level exhaust pipe 10.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. The utility model provides a VAV variable air volume experimental system, installs in the interior space, its characterized in that: the VAV air conditioner consists of a VAV variable air volume controller, a fresh air/exhaust air pipe connected with the VAV variable air volume controller, a blower/exhaust fan connected with the VAV variable air volume controller, a high-level exhaust pipe and a side exhaust pipe.
2. The VAV variable air volume experimental system according to claim 1, characterized in that: the high-position exhaust pipe is arranged at the top of the room, and the side exhaust pipe is vertically arranged from bottom to top according to the indoor side wall.
3. The VAV variable air volume experimental system according to claim 1, characterized in that: the top surface of the indoor space is respectively provided with a fresh air inlet and a top surface high-level air outlet; the fresh air inlet is connected with a fresh air/exhaust air pipe, and the top surface high-level exhaust outlet is connected with a high-level exhaust pipe.
4. The VAV variable air volume experimental system according to claim 1, characterized in that: the lower side of the side exhaust pipe is provided with a low-level exhaust outlet, and the upper side of the side exhaust pipe is provided with a side high-level exhaust outlet.
5. The VAV variable air volume experimental system according to claim 1, characterized in that: the new/exhaust air pipe is provided with a first variable constant air volume adjusting valve.
6. The VAV variable air volume experimental system according to claim 1, characterized in that: and a second variable constant air volume adjusting valve and a sensor are arranged on the high-level exhaust pipe.
7. The VAV variable air volume experimental system according to claim 1, characterized in that: and the side exhaust pipes are respectively provided with a third variable fixed air volume regulating valve.
8. The VAV variable air volume experimental system according to claim 1, characterized in that: the side exhaust pipe is communicated with the high-level exhaust pipe, and the tail end of the high-level exhaust pipe is connected with the power system or the unpowered system.
CN202010136226.XA 2020-03-02 2020-03-02 VAV variable air volume experimental system Pending CN113357729A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010136226.XA CN113357729A (en) 2020-03-02 2020-03-02 VAV variable air volume experimental system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010136226.XA CN113357729A (en) 2020-03-02 2020-03-02 VAV variable air volume experimental system

Publications (1)

Publication Number Publication Date
CN113357729A true CN113357729A (en) 2021-09-07

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CN202010136226.XA Pending CN113357729A (en) 2020-03-02 2020-03-02 VAV variable air volume experimental system

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006008757U1 (en) * 2006-06-02 2006-10-12 Zehnder Verkaufs- Und Verwaltungs Ag Room ventilating system for ventilating apartments and offices comprises a feed line, a removal line, a ventilating device, a connecting element, a valve for protecting from overheating and a switching unit
CN102029203A (en) * 2010-10-25 2011-04-27 广州市泛美实业有限公司 Control system of laboratory variable air volume (VAV) fume hood
CN202059850U (en) * 2011-04-26 2011-12-07 上海开纯洁净室技术工程有限公司 Independent ventilation cage tool environment control device
CN203100056U (en) * 2013-02-28 2013-07-31 东南大学 Building natural ventilating system free of energy consumption
CN204006357U (en) * 2014-08-21 2014-12-10 南京健友生化制药股份有限公司 A kind of air-conditioning system and voltage stabilizing pipeline thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006008757U1 (en) * 2006-06-02 2006-10-12 Zehnder Verkaufs- Und Verwaltungs Ag Room ventilating system for ventilating apartments and offices comprises a feed line, a removal line, a ventilating device, a connecting element, a valve for protecting from overheating and a switching unit
CN102029203A (en) * 2010-10-25 2011-04-27 广州市泛美实业有限公司 Control system of laboratory variable air volume (VAV) fume hood
CN202059850U (en) * 2011-04-26 2011-12-07 上海开纯洁净室技术工程有限公司 Independent ventilation cage tool environment control device
CN203100056U (en) * 2013-02-28 2013-07-31 东南大学 Building natural ventilating system free of energy consumption
CN204006357U (en) * 2014-08-21 2014-12-10 南京健友生化制药股份有限公司 A kind of air-conditioning system and voltage stabilizing pipeline thereof

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