CN204648592U - A kind of laboratory variable air ventilating system - Google Patents
A kind of laboratory variable air ventilating system Download PDFInfo
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- CN204648592U CN204648592U CN201520340200.1U CN201520340200U CN204648592U CN 204648592 U CN204648592 U CN 204648592U CN 201520340200 U CN201520340200 U CN 201520340200U CN 204648592 U CN204648592 U CN 204648592U
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- ventilating system
- interface circuit
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- variable air
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Abstract
The utility model discloses a kind of laboratory variable air ventilating system, described laboratory variable air ventilating system comprises vent cabinet, face air velocity transducer, differential pressure pickup, air exhausting device, human-computer interaction device, pass through Temperature Humidity Sensor, differential pressure pickup, air velocity transducer can detect the experimental situation of vent cabinet in real time, the humiture information of receiving sensor detection is carried out by the interface circuit of human-computer interaction device, draught head information and ventilation information, MCU processor is sent to process information by communicating circuit, LED display is issued and TFT display board carries out showing and controlling after being disposed, the laboratory variable air ventilating system of said structure, experimental situation information centralized-moni-tor and management can be realized, its structure is simple, cost is low, dependable performance, automatic air quantity can be realized and control air draft.
Description
Technical field
The utility model relates to laboratory ventilation technical field, particularly relates to a kind of laboratory variable air ventilating system.
Background technology
In various laboratory, particularly in test, producing the laboratory of toxic and harmful, in order to ensure that experimenter's is healthy, needing in time toxic and harmful to be discharged outside laboratory.Now conventional air draft way: a kind of mode is that ventilation equipment (vent cabinet, ventilator cowling, universal draft hood) and pipeline, blower fan are connect direct air draft, this mode blower fan is opened or is closed, blower fan exhaust air rate can not regulate, as long as ventilation equipment use, blower fan just must running at full capacity.Therefore, laboratory is crossed air draft and is caused winter cold, and summer is hot.And noise is large, the shortcomings such as electric energy loss is large.Another kind of mode is exactly controlled by PLC or computer programming, this mode can realize VAV control air draft, but experimental laboratory air exhausting number of devices is different, programing work amount is large, control appliance cost is high, only have the high-level laboratory of minute quantity just can afford to use, in reality, generally use quite difficulty.
Utility model content
In view of current laboratory variable air air draft controls above shortcomings, the utility model provides a kind of laboratory variable air ventilating system, and structure is simple, cost is low, dependable performance, can realize automatic air quantity and control air draft.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
A kind of laboratory variable air ventilating system, described laboratory variable air ventilating system comprises vent cabinet, face air velocity transducer, differential pressure pickup, air exhausting device, human-computer interaction device, described vent cabinet is connected with air exhausting device, described air velocity transducer, differential pressure pickup is fixedly installed on vent cabinet, described air velocity transducer, differential pressure pickup, air exhausting device is connected with human-computer interaction device respectively, described human-computer interaction device comprises LED display, TFT display board, communicating circuit, interface circuit, power supply changeover device, described TFT display board is provided with parallel interface, described communicating circuit is connected with TFT display board, described TFT display board is connected with LED display, described interface circuit is connected with communicating circuit, described TFT display board, interface circuit is connected with power supply changeover device respectively, described air velocity transducer, differential pressure pickup, air exhausting device is connected with interface circuit respectively.
According to an aspect of the present utility model, described human-computer interaction device also comprises MCU processor, crystal oscillator, FPC connector, reset circuit, described MCU processor is provided with parallel interface, described MCU processor is connected with communicating circuit, described MCU processor is connected with TFT display board by FPC connector, described MCU processor is connected with LED display, and described crystal oscillator, reset circuit are connected with MCU processor respectively.
According to an aspect of the present utility model, described air exhausting device comprises VAV control valve, actuator, frequency conversion fan, duct static pressure sensor, duct static pressure controller, frequency converter, described VAV control valve is connected with actuator, described VAV control valve is connected with frequency conversion fan, described duct static pressure sensor setting is on ventilation shaft, described duct static pressure sensor is connected with interface circuit, described interface circuit is connected with duct static pressure controller, described duct static pressure controller is connected with frequency converter, and described frequency converter is connected with frequency conversion fan.
According to an aspect of the present utility model, described laboratory variable air ventilating system also comprises Temperature Humidity Sensor, and described Temperature Humidity Sensor is arranged in vent cabinet, and described Temperature Humidity Sensor is connected with interface circuit.
According to an aspect of the present utility model, described Temperature Humidity Sensor comprises condenser type condensate hygrometric element, energy gap type temperature element, A/D converter, described hygrometric element, temperature element are connected with A/D converter respectively, and described A/D converter is connected with interface circuit.
According to an aspect of the present utility model, described differential pressure pickup comprises pressure reduction calculator, A/D converter, room pressure sensing probe, pressure outside sensing probe, described room pressure sensing probe, pressure outside sensing probe are connected with A/D converter respectively, described pressure reduction calculator is connected with A/D converter, and described pressure reduction calculator is connected with interface circuit.
The advantage that the utility model is implemented: pass through Temperature Humidity Sensor, differential pressure pickup, air velocity transducer can detect the experimental situation of vent cabinet in real time, the humiture information of receiving sensor detection is carried out by the interface circuit of human-computer interaction device, draught head information and ventilation information, MCU processor is sent to process information by communicating circuit, LED display is issued and TFT display board carries out showing and controlling after being disposed, the laboratory variable air ventilating system of said structure, experimental situation information centralized-moni-tor and management can be realized, its structure is simple, cost is low, dependable performance, automatic air quantity can be realized and control air draft.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of laboratory variable air ventilating system described in the utility model;
Fig. 2 is the circuit simplified schematic diagram of the human-computer interaction device of a kind of laboratory variable air ventilating system described in the utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As depicted in figs. 1 and 2, a kind of laboratory variable air ventilating system, described laboratory variable air ventilating system comprises vent cabinet 1, face air velocity transducer 2, differential pressure pickup 3, air exhausting device 4, human-computer interaction device 5, described vent cabinet 1 is connected with air exhausting device 4, described air velocity transducer 2, differential pressure pickup 3 is fixedly installed on vent cabinet 1, described air velocity transducer 2, differential pressure pickup 3, air exhausting device 4 is connected with human-computer interaction device 5 respectively, and described human-computer interaction device 5 comprises LED display 52, TFT shows control 53, communicating circuit 54, interface circuit 55, power supply changeover device 57, described TFT display board 53 is provided with parallel interface 510, and described communicating circuit 54 is connected with TFT display board 53, and described TFT display board 53 is connected with LED display 52, described interface circuit 55 is connected with communicating circuit 54, described TFT display board 53, interface circuit 55 is connected with power supply changeover device 57 respectively, described air velocity transducer 2, differential pressure pickup 3, air exhausting device 4 is connected with interface circuit 55 respectively.
In the present embodiment, human-computer interaction device 5 also comprises MCU processor 51, crystal oscillator 56, FPC connector 58, reset circuit 59, described MCU processor 51 is provided with parallel interface 510, described MCU processor 51 is connected with communicating circuit 54, described MCU processor 51 is connected with TFT display board 53 by FPC connector 58, described MCU processor 51 is connected with LED display 52, and described crystal oscillator 56, reset circuit 59 are connected with MCU processor 51 respectively.
In the present embodiment, air exhausting device 4 comprises VAV control valve 41, actuator 42, frequency conversion fan 43, duct static pressure sensor 44, duct static pressure controller 45, frequency converter 46, described VAV control valve 41 is connected with actuator 42, described VAV control valve 41 is connected with frequency conversion fan 43, described duct static pressure sensor 44 is arranged on ventilation shaft, described duct static pressure sensor 44 is connected with interface circuit 55, described interface circuit 55 is connected with duct static pressure controller 45, described duct static pressure controller 45 is connected with frequency converter 46, described frequency converter 46 is connected with frequency conversion fan 43.
In the present embodiment, laboratory variable air ventilating system also comprises Temperature Humidity Sensor 6, and described Temperature Humidity Sensor 6 is arranged in vent cabinet 1, and described Temperature Humidity Sensor 6 is connected with interface circuit 55.
In the present embodiment, Temperature Humidity Sensor 6 comprises condenser type condensate hygrometric element 61, energy gap type temperature element 62, A/D converter 63, described hygrometric element 61, temperature element 62 are connected with A/D converter 63 respectively, and described A/D converter 63 is connected with interface circuit 55.
In the present embodiment, differential pressure pickup 3 comprises pressure reduction calculator 31, A/D converter 63, room pressure sensing probe 32, pressure outside sensing probe 33, described room pressure sensing probe 32, pressure outside sensing probe 33 are connected with A/D converter 63 respectively, described pressure reduction calculator 31 is connected with A/D converter 63, and described pressure reduction calculator 31 is connected with interface circuit 55.
The advantage that the utility model is implemented: pass through Temperature Humidity Sensor, differential pressure pickup, air velocity transducer can detect the experimental situation of vent cabinet in real time, the humiture information of receiving sensor detection is carried out by the interface circuit of human-computer interaction device, draught head information and ventilation information, MCU processor is sent to process information by communicating circuit, LED display is issued and TFT display board carries out showing and controlling after being disposed, the laboratory variable air ventilating system of said structure, experimental situation information centralized-moni-tor and management can be realized, its structure is simple, cost is low, dependable performance, automatic air quantity can be realized and control air draft.The above; be only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; the technical staff of any skilled is in technical scope disclosed in the utility model; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (6)
1. a laboratory variable air ventilating system, it is characterized in that, described laboratory variable air ventilating system comprises vent cabinet, face air velocity transducer, differential pressure pickup, air exhausting device, human-computer interaction device, described vent cabinet is connected with air exhausting device, described air velocity transducer, differential pressure pickup is fixedly installed on vent cabinet, described air velocity transducer, differential pressure pickup, air exhausting device is connected with human-computer interaction device respectively, described human-computer interaction device comprises LED display, TFT display board, communicating circuit, interface circuit, power supply changeover device, described TFT display board is provided with parallel interface, described communicating circuit is connected with TFT display board, described TFT display board is connected with LED display, described interface circuit is connected with communicating circuit, described TFT display board, interface circuit is connected with power supply changeover device respectively, described air velocity transducer, differential pressure pickup, air exhausting device is connected with interface circuit respectively.
2. laboratory variable air ventilating system according to claim 1, it is characterized in that, described human-computer interaction device also comprises MCU processor, crystal oscillator, FPC connector, reset circuit, described MCU processor is provided with parallel interface, described MCU processor is connected with communicating circuit, described MCU processor is connected with TFT display board by FPC connector, and described MCU processor is connected with LED display, and described crystal oscillator, reset circuit are connected with MCU processor respectively.
3. laboratory variable air ventilating system according to claim 1, it is characterized in that, described air exhausting device comprises VAV control valve, actuator, frequency conversion fan, duct static pressure sensor, duct static pressure controller, frequency converter, described VAV control valve is connected with actuator, described VAV control valve is connected with frequency conversion fan, described duct static pressure sensor setting is on ventilation shaft, described duct static pressure sensor is connected with interface circuit, described interface circuit is connected with duct static pressure controller, described duct static pressure controller is connected with frequency converter, described frequency converter is connected with frequency conversion fan.
4. laboratory variable air ventilating system according to claim 1, is characterized in that, described laboratory variable air ventilating system also comprises Temperature Humidity Sensor, and described Temperature Humidity Sensor is arranged in vent cabinet, and described Temperature Humidity Sensor is connected with interface circuit.
5. laboratory variable air ventilating system according to claim 4, it is characterized in that, described Temperature Humidity Sensor comprises condenser type condensate hygrometric element, energy gap type temperature element, A/D converter, described hygrometric element, temperature element are connected with A/D converter respectively, and described A/D converter is connected with interface circuit.
6. laboratory variable air ventilating system according to claim 1, it is characterized in that, described differential pressure pickup comprises pressure reduction calculator, A/D converter, room pressure sensing probe, pressure outside sensing probe, described room pressure sensing probe, pressure outside sensing probe are connected with A/D converter respectively, described pressure reduction calculator is connected with A/D converter, and described pressure reduction calculator is connected with interface circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520340200.1U CN204648592U (en) | 2015-05-25 | 2015-05-25 | A kind of laboratory variable air ventilating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520340200.1U CN204648592U (en) | 2015-05-25 | 2015-05-25 | A kind of laboratory variable air ventilating system |
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| CN204648592U true CN204648592U (en) | 2015-09-16 |
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| CN201520340200.1U Expired - Fee Related CN204648592U (en) | 2015-05-25 | 2015-05-25 | A kind of laboratory variable air ventilating system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106020302A (en) * | 2016-07-27 | 2016-10-12 | 南京诺丹工程技术有限公司 | Lab environment monitoring device |
| CN106814213A (en) * | 2015-11-27 | 2017-06-09 | 上海卓思智能科技股份有限公司 | A kind of vent cabinet and vent cabinet face wind measurement method and device |
| CN107866434A (en) * | 2016-09-26 | 2018-04-03 | 苏州天弘益华机电有限公司 | A kind of ventilation hoods for laboratories system |
| CN109737548A (en) * | 2019-03-06 | 2019-05-10 | 上海朗绿建筑科技股份有限公司 | A kind of fresh air system of self-adaption constant positive pressure |
-
2015
- 2015-05-25 CN CN201520340200.1U patent/CN204648592U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106814213A (en) * | 2015-11-27 | 2017-06-09 | 上海卓思智能科技股份有限公司 | A kind of vent cabinet and vent cabinet face wind measurement method and device |
| CN106020302A (en) * | 2016-07-27 | 2016-10-12 | 南京诺丹工程技术有限公司 | Lab environment monitoring device |
| CN107866434A (en) * | 2016-09-26 | 2018-04-03 | 苏州天弘益华机电有限公司 | A kind of ventilation hoods for laboratories system |
| CN109737548A (en) * | 2019-03-06 | 2019-05-10 | 上海朗绿建筑科技股份有限公司 | A kind of fresh air system of self-adaption constant positive pressure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160902 Address after: 201108 Minhang District, Shanghai, King Road, No. 439, building 303, room 3, room 5 Patentee after: SHANGHAI QUADJOIN ELECTRONIC TECHNOLOGY CO., LTD. Patentee after: S&F(Shanghai)Laboratory Equipment Co., Ltd. Address before: 201108 Minhang District, Shanghai, King Road, No. 439, building 303, room 3, room 5 Patentee before: SHANGHAI QUADJOIN ELECTRONIC TECHNOLOGY CO., LTD. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20200525 |
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| CF01 | Termination of patent right due to non-payment of annual fee |