CN112611094A - Pressure balancing device of laboratory air conditioner circulating system - Google Patents
Pressure balancing device of laboratory air conditioner circulating system Download PDFInfo
- Publication number
- CN112611094A CN112611094A CN202110006406.0A CN202110006406A CN112611094A CN 112611094 A CN112611094 A CN 112611094A CN 202110006406 A CN202110006406 A CN 202110006406A CN 112611094 A CN112611094 A CN 112611094A
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- Prior art keywords
- laboratory
- air
- closed valve
- electric closed
- valve
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Classifications
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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
- 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
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
- F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
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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
- F24F11/00—Control or safety arrangements
- F24F11/0001—Control or safety arrangements for ventilation
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/04—Air-mixing units
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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
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
The invention discloses a pressure balancing device of a laboratory air conditioner circulating system, which comprises a first electric sealing valve arranged at an air inlet of a laboratory, and a resistance balancing box and a second electric sealing valve which are sequentially arranged on a second air inlet channel.
Description
Technical Field
The invention relates to a pressure balancing device, in particular to a pressure balancing device of a laboratory air conditioning circulating system.
Background
At present, how to ensure the room pressure in a laboratory with an exhaust type biological safety cabinet is a very big problem. That is, when the biological safety cabinet in the laboratory is not opened, the standard design pressure value is guaranteed in the room, and when the biological safety cabinet is opened, because partial indoor air is discharged, the negative pressure in the room is increased instantly, and sudden pressure change brings many adverse effects to the balance of the whole air conditioning system and the operation of the laboratory.
The existing pressure balancing device for the laboratory air conditioning circulating system generally has three modes: the first one is to use the blower, ventilator frequency conversion, all end pipelines use the Venturi variable air volume and constant air volume adjusting valve, the technical scheme has large initial investment, and is difficult to bear the cost for some small laboratories; the second one is specially provided with a set of air supplement system which is interlocked with a biological safety cabinet in a laboratory to realize pressure balance, the technical scheme has large initial investment, and the air supplement system has small air volume, complex system, large pressure loss and difficult guarantee of air supplement quality; the third is that the biological safety cabinet fan is normally open, increases the room air supply, guarantees pressure balance, and this kind of technical scheme running cost is too high, has increased the working costs.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned problems and providing a pressure balancing device for a laboratory air conditioning cycle system.
In order to overcome the technical problems, the invention adopts the technical scheme that:
the air conditioner comprises a first electric closed valve arranged at an air inlet of a laboratory, and a resistance balancing box and a second electric closed valve which are sequentially arranged on a second air inlet channel, wherein the resistance balancing box is positioned at the front end of the second electric closed valve, the first electric closed valve is connected with an air outlet of an air conditioning unit, and an air inlet of the air conditioning unit is connected with the first air inlet channel; the resistance balancing box consists of a high-efficiency filter and an air volume adjusting valve, and is used for adjusting the area of a balancing valve of air volume and a filter of air volume; the first electric closed valve and the second electric closed valve realize switch interlocking logic control between the first electric closed valve and the second electric closed valve through a PLC; set up the biological safety cabinet in the laboratory, the biological safety cabinet passes through the one end of tube coupling safety cabinet exhaust unit, first exhaust duct is connected to the other end of safety cabinet exhaust unit, laboratory air outlet department passes through the one end of tube coupling laboratory exhaust unit, second exhaust duct is connected to the other end of laboratory exhaust unit.
Compared with the prior art, the invention has the beneficial effects that: switch interlocking logic control between each other is realized through first electronic airtight valve and the electronic airtight valve of second adoption PLC, realizes that the pressure of laboratory is undulant, saves the working costs, simple structure, and is with low costs.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
As shown in fig. 1, a pressure balancing device of a laboratory air conditioning circulation system comprises a first electric closed valve 1 arranged at an air inlet of a laboratory 6, and a resistance balancing box 3 and a second electric closed valve 2 which are sequentially arranged on a second air inlet channel 4b, wherein the resistance balancing box 3 is positioned at the front end of the second electric closed valve 2, the first electric closed valve 1 is connected with an air outlet of an air conditioning unit 5, and an air inlet of the air conditioning unit 5 is connected with a first air inlet channel 4 a; the resistance balancing box 3 consists of a high-efficiency filter and an air volume adjusting valve, and is used for adjusting the area of a balancing valve of air volume and a filter of air volume; the first electric closed valve 1 and the second electric closed valve 2 realize switch interlocking logic control between each other through a PLC; set up biological safety cabinet 7 in the laboratory 6, biological safety cabinet 7 passes through the one end that pipeline 8 connects safety cabinet exhaust unit 9, first exhaust duct 10 is connected to safety cabinet exhaust unit 9's the other end, laboratory 6 air outlet department connects the one end of laboratory exhaust unit 12 through pipeline 11, second exhaust duct 13 is connected to the other end of laboratory exhaust unit 12.
The high-efficiency filter and the air volume adjusting valve of the resistance balance box 3 are arranged inside the resistance balance box 3, wherein the filter grade of the high-efficiency filter is H14.
When the air conditioner works, the air quantity regulating valve of the resistance balancing box 3 controls and regulates the air quantity, the air quantity is filtered by the high-efficiency filter, when the second electric closed valve 2 is closed, the first electric closed valve 1 is opened at the same time, the air quantity enters the air conditioning unit 5 from the first air inlet channel 4a, the air outlet of the air conditioning unit 5 enters the laboratory 6 through the first electric closed valve 1, when the biological safety cabinet 7 in the laboratory 6 is closed, the first electric closed valve 1 is closed, the second electric closed valve 2 is opened at the same time, partial air quantity sent into the laboratory 6 flows to the resistance balancing box 3 through the second electric closed valve 2, returns to the first air inlet channel 4a through the second air inlet channel 4b, is mixed with the air quantity fed from the port of the first air inlet channel 4a and then enters the air conditioning unit 5 again, the operation cost is further reduced, the air exhaust is estimated by 1300 m/h of the biological safety cabinet 7, the heating energy consumption can be saved by about 15KW when the [1] [2] runs in winter per hour; the operation in summer [3] can save the refrigeration energy consumption by about 12KW, and compared with the conventional biological safety cabinet in a normal arrangement form, the operation cost is saved. When the biosafety cabinet 7 is opened, the first electric closed valve 1 is opened, the second electric closed valve 2 is closed, and the fresh air is fed into the laboratory 6 through the first electric closed valve 1, so that the fresh air supplementing quantity is consistent with the exhaust quantity of the biosafety cabinet, and the pressure of the laboratory 6 is not fluctuated. The air volume area of the second air inlet channel 4b can be adjusted by adjusting the air volume adjusting valve of the resistance balancing box 3, so that the resistance of the air inlet channel is changed, and [4] the air inlet volume and the air outlet volume in the laboratory 6 are balanced. Compared with a complex venturi valve system with constant air volume and variable air volume, the system is simpler, has much lower initial investment and is very suitable for laboratory projects with low budget cost.
The invention is not limited to the precise arrangements described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (2)
1. The utility model provides a pressure balance device of laboratory air conditioning circulation system which characterized in that: the air conditioner comprises a first electric closed valve (1) arranged at an air inlet of a laboratory (6), and a resistance balance box (3) and a second electric closed valve (2) which are sequentially arranged on a second air inlet channel (4 b), wherein the resistance balance box (3) is positioned at the front end of the second electric closed valve (2), the first electric closed valve (1) is connected with an air outlet of an air conditioning unit (5), and an air inlet of the air conditioning unit (5) is connected with a first air inlet channel (4 a); the resistance balancing box (3) consists of a high-efficiency filter and an air volume adjusting valve, and is used for adjusting the area of a balancing valve of air volume and a filter of air volume; the first electric closed valve (1) and the second electric closed valve (2) realize switch interlocking logic control between each other through a PLC; set up biological safety cabinet (7) in laboratory (6), biological safety cabinet (7) are through the one end that pipeline (8) connect safety cabinet exhaust unit (9), first exhaust duct way (10) are connected to the other end of safety cabinet exhaust unit (9), laboratory (6) air outlet department connects the one end of laboratory exhaust unit (12) through pipeline (11), second exhaust duct way (13) are connected to the other end of laboratory exhaust unit (12).
2. The pressure balancing device of a laboratory air conditioning cycle system according to claim 1, wherein: the efficient filter and the air volume adjusting valve of the resistance balance box (3) are both arranged inside the resistance balance box (3), wherein the filter grade of the efficient filter is H14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110006406.0A CN112611094B (en) | 2021-01-05 | 2021-01-05 | Pressure balancing device of laboratory air conditioner circulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110006406.0A CN112611094B (en) | 2021-01-05 | 2021-01-05 | Pressure balancing device of laboratory air conditioner circulating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112611094A true CN112611094A (en) | 2021-04-06 |
| CN112611094B CN112611094B (en) | 2023-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202110006406.0A Active CN112611094B (en) | 2021-01-05 | 2021-01-05 | Pressure balancing device of laboratory air conditioner circulating system |
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| CN (1) | CN112611094B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357730A (en) * | 2021-05-25 | 2021-09-07 | 南京航宇实验设备科技有限公司 | Intelligent pressure balancing system and pressure balancing method for biosafety laboratory |
Citations (9)
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|---|---|---|---|---|
| US5255710A (en) * | 1988-04-07 | 1993-10-26 | David Palmer | Process-chamber flow control system |
| CN1895782A (en) * | 2006-06-13 | 2007-01-17 | 中国人民解放军军事医学科学院 | Movable safety biological laboratory |
| CN102814207A (en) * | 2012-07-27 | 2012-12-12 | 苏州江南航天机电工业有限公司 | Movable biological examination laboratory |
| CN203727245U (en) * | 2014-02-24 | 2014-07-23 | 中国人民解放军军事医学科学院卫生装备研究所 | Bio-safety detecting vehicle |
| CN204830359U (en) * | 2015-08-12 | 2015-12-02 | 广州澳升洁净技术有限公司 | Pressure differential control system of positive control room |
| CN208794643U (en) * | 2018-05-09 | 2019-04-26 | 山东辉瑞净化工程有限公司 | A kind of laboratory pressure automatic-balancing system |
| CN209782906U (en) * | 2019-03-14 | 2019-12-13 | 安徽一洋实验设备有限公司 | Energy-conserving exhaust system in laboratory |
| CN209960702U (en) * | 2019-04-24 | 2020-01-17 | 中国科学院武汉病毒研究所 | Biological safety laboratory exhaust system |
| CN111790712A (en) * | 2020-07-13 | 2020-10-20 | 中国电子系统工程第二建设有限公司 | High-grade biosafety laboratory exhaust system with biosafety cabinet |
-
2021
- 2021-01-05 CN CN202110006406.0A patent/CN112611094B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5255710A (en) * | 1988-04-07 | 1993-10-26 | David Palmer | Process-chamber flow control system |
| CN1895782A (en) * | 2006-06-13 | 2007-01-17 | 中国人民解放军军事医学科学院 | Movable safety biological laboratory |
| CN102814207A (en) * | 2012-07-27 | 2012-12-12 | 苏州江南航天机电工业有限公司 | Movable biological examination laboratory |
| CN203727245U (en) * | 2014-02-24 | 2014-07-23 | 中国人民解放军军事医学科学院卫生装备研究所 | Bio-safety detecting vehicle |
| CN204830359U (en) * | 2015-08-12 | 2015-12-02 | 广州澳升洁净技术有限公司 | Pressure differential control system of positive control room |
| CN208794643U (en) * | 2018-05-09 | 2019-04-26 | 山东辉瑞净化工程有限公司 | A kind of laboratory pressure automatic-balancing system |
| CN209782906U (en) * | 2019-03-14 | 2019-12-13 | 安徽一洋实验设备有限公司 | Energy-conserving exhaust system in laboratory |
| CN209960702U (en) * | 2019-04-24 | 2020-01-17 | 中国科学院武汉病毒研究所 | Biological safety laboratory exhaust system |
| CN111790712A (en) * | 2020-07-13 | 2020-10-20 | 中国电子系统工程第二建设有限公司 | High-grade biosafety laboratory exhaust system with biosafety cabinet |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357730A (en) * | 2021-05-25 | 2021-09-07 | 南京航宇实验设备科技有限公司 | Intelligent pressure balancing system and pressure balancing method for biosafety laboratory |
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| Publication number | Publication date |
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| CN112611094B (en) | 2023-01-20 |
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Effective date of registration: 20230619 Address after: 110000 Qianjin Farm, Shenbei New District, Shenyang City, Liaoning Province Patentee after: Liaoning Kuntai Purification Equipment Co.,Ltd. Address before: 110000 1102, no.4-2 Wenwen Road, Heping District, Shenyang City, Liaoning Province Patentee before: Liaoning Youxinde Construction Engineering Co.,Ltd. |