CN210801515U - Variable air volume air treatment system for laboratory - Google Patents
Variable air volume air treatment system for laboratory Download PDFInfo
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- CN210801515U CN210801515U CN201921285553.0U CN201921285553U CN210801515U CN 210801515 U CN210801515 U CN 210801515U CN 201921285553 U CN201921285553 U CN 201921285553U CN 210801515 U CN210801515 U CN 210801515U
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Abstract
The utility model discloses a variable air volume air processing system for a laboratory, which comprises a fresh air component and an exhaust component; the fresh air assembly comprises a variable air volume fresh air processing unit and a fresh air supply pipe, wherein the inlet of the variable air volume fresh air processing unit is communicated with the outside atmosphere, and the outlet of the variable air volume fresh air processing unit is communicated with the inlet of the fresh air supply pipe; the outlet of the fresh air supply pipe is communicated with the interior of the laboratory; and the fresh air supply pipe is provided with a pressure sensor A and an electric adjusting butterfly valve A. The utility model has the advantages that: the utility model designs a fresh air component and an exhaust component, which can timely adjust the fresh air and the exhaust air volume entering the laboratory, ensure the environment pressure required by the indoor working area and the air supplement amount required by the fume exhaust cabinet, and save the energy consumption of the system operation; meanwhile, the fresh air of the part needed by the smoke exhaust cabinet is realized, the indoor air conditioning treatment is not needed, and the energy conservation of the laboratory air treatment system is realized.
Description
Technical Field
The utility model relates to an experiment auxiliary assembly technical field, concretely relates to laboratory is with variable air volume air processing system.
Background
In large-scale laboratory rooms of inspection and testing centers such as steel and iron combination enterprises and the like, certain temperature and environmental pressure are required to be kept in indoor working areas according to process requirements, for example, the room temperature is kept at 23 +/-3 ℃, and the pressure is kept at 5-10 Pa micro positive pressure, so that an indoor air conditioner and an outdoor fresh air system are required to be arranged to meet the requirements of the indoor temperature and the pressure; meanwhile, the smoke exhaust cabinet is arranged in the laboratory, a large amount of indoor air needs to be supplemented in the experimental process, and the indoor air is purified by the exhaust system of the smoke exhaust cabinet and then is exhausted outdoors, so that the air supplementing requirement of the smoke exhaust cabinet of the part of the fresh air quantity sent into the room by the fresh air system is also considered. In order to ensure the indoor temperature requirement, a large amount of outdoor fresh air sent into the laboratory needs to be cooled or heated, so that a large amount of air conditioner load is increased, and the energy consumption of the air conditioner is increased.
Disclosure of Invention
An object of the utility model is to provide a can guarantee indoor work area required ambient pressure and save system operation energy consumption's laboratory variable air volume air treatment system to prior art's not enough.
The utility model adopts the technical proposal that: a variable air volume air processing system for a laboratory comprises a fresh air assembly and an air exhaust assembly; the fresh air assembly comprises a variable air volume fresh air processing unit and a fresh air supply pipe, the variable air volume fresh air processing unit is arranged outside the laboratory room, the inlet of the variable air volume fresh air processing unit is communicated with the outside atmosphere, and the outlet of the variable air volume fresh air processing unit is communicated with the inlet of the fresh air supply pipe; the outlet of the fresh air supply pipe is communicated with the interior of the laboratory; the fresh air supply pipe is provided with a pressure sensor A and an electric adjusting butterfly valve A, and the pressure sensor A is connected with a variable frequency controller A of the variable air volume fresh air processing unit; a pressure sensor B and a smoke exhaust cabinet are arranged in the laboratory; the air outlet assembly comprises an exhaust pipe and a variable-frequency exhaust unit arranged on the exhaust pipe, and an air outlet of the exhaust cabinet is communicated with the exhaust pipe.
According to the scheme, the fresh air component further comprises a fresh air branch pipe provided with an electric adjusting butterfly valve B, one end of the fresh air branch pipe is communicated with a fresh air supply pipe, and the other end of the fresh air supply pipe is communicated with a floor air supply outlet arranged in a laboratory; the upper part in the laboratory is provided with a suspended ceiling which divides the laboratory into an upper space and a lower space, and the pressure sensor B is arranged in the lower space; a pressure sensor C is arranged in the upper space; the upper space is communicated with an air supply outlet arranged on the floor slab; the inlet of the smoke exhaust cabinet is communicated with one end of the air supply pipe, and the other end of the air supply pipe is communicated with the upper space.
According to the scheme, the laboratory ceiling is provided with an air outlet of an air diffuser and a room shutter air return opening; the upper space is internally provided with a plurality of groups of fan coil units, the inlets of the fan coil units are communicated with the shutter air return inlet through pipelines, the outlets of the fan coil units are communicated with the air supply outlet of the air diffuser through pipelines, and the shutter air return inlet and the air supply outlet of the air diffuser are both arranged on the ceiling.
According to the scheme, the outlet of the fresh air supply pipe is communicated with the air supply outlet of one of the air diffusers.
According to the scheme, the exhaust pipe comprises an indoor exhaust section and an outdoor exhaust main pipe, one end of the indoor exhaust section is communicated with an outlet of the fume exhaust cabinet machine, and the other end of the indoor exhaust pipe is communicated with the outdoor exhaust main pipe through an electric butterfly valve after sequentially passing through a ceiling and a floor slab of a laboratory; an adsorption purifier and a pressure sensor D are installed on the outdoor exhaust main pipe, and an outlet of the adsorption purifier is communicated with an inlet of the variable-frequency exhaust unit.
According to the scheme, the adsorption type purifier is not limited to a dry adsorption purifier or a wet spraying purifier.
According to the scheme, the adsorption purifier is a waste gas dry adsorption purifier or a wet spray purifier.
The utility model has the advantages that:
1. the utility model designs a fresh air component and an exhaust component, which can timely adjust the fresh air and the exhaust air volume entering the laboratory, ensure the environment pressure required by the indoor working area and the air supplement amount required by the fume exhaust cabinet, and save the energy consumption of the system operation; meanwhile, the fresh air of the part needed by the smoke exhaust cabinet is realized, the indoor air conditioning treatment is not needed, and the energy conservation of the laboratory air treatment system is realized.
2. The utility model discloses set up fan-coil unit in the upper portion space, the air in the lower part space gets into fan-coil unit through the tripe return air inlet and handles the back, sends into lower part space (also indoor work area) by the air diffuser supply-air outlet again, has guaranteed required ambient temperature in the laboratory work area.
3. The utility model can directly utilize the upper space and the air supply pipe to supply fresh air to the smoke exhaust cabinet, and the fresh air of the part does not need to be treated by an indoor fan coil air conditioner, thereby reducing the energy consumption of the indoor fan coil unit air conditioner; when the number of the smoke exhaust cabinets in the laboratory is large or the required air supplement amount is large, the energy-saving effect is obvious.
4. The utility model has the advantages of reasonable design, convenient operation.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Wherein: 1. a variable air volume fresh air processing unit; 2. a fan coil unit; 3. a smoke exhaust cabinet; 4. a variable frequency exhaust fan set; 5. an adsorption purifier; 6. a fresh air blast pipe; 7. an outdoor main exhaust duct; 8. air supplementing pipes; 9. an electric adjusting butterfly valve A; 10. an electric adjusting butterfly valve B; 11. an electric butterfly valve; 12. a floor air supply outlet; 13. an indoor air exhaust section; 14. an air outlet of the air diffuser; 15. a louver air return opening; 16. a pressure sensor A; 17. a pressure sensor B; 18. a pressure sensor C; 19. a pressure sensor D; 20. A variable frequency controller A; 21. a variable frequency controller B; 22. a fresh air branch pipe; 23. a floor slab; 24. an upper space; 25. a suspended ceiling; 26. A lower space.
Detailed Description
For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
The variable air volume air processing system for the laboratory as shown in figure 1 comprises a fresh air assembly and an air exhaust assembly; the fresh air assembly comprises a variable air volume fresh air processing unit 1 and a fresh air supply pipe 6, the variable air volume fresh air processing unit 1 is arranged outside the laboratory chamber, the inlet of the variable air volume fresh air processing unit 1 is communicated with the outside atmosphere, and the outlet of the variable air volume fresh air processing unit 1 is communicated with the inlet of the fresh air supply pipe 6; the outlet of the fresh air supply pipe 6 is communicated with the inside of the laboratory; the fresh air blast pipe 6 is provided with a pressure sensor A16 and an electric adjusting butterfly valve A9; a pressure sensor B17 and a smoke exhaust cabinet 3 are arranged in the laboratory, and a pressure sensor B17 is connected with an electric adjusting butterfly valve A9; the air outlet assembly comprises an exhaust pipe and a variable-frequency exhaust unit 4 arranged on the exhaust pipe, and an air outlet of the exhaust cabinet 3 is communicated with the exhaust pipe; the pressure sensor A16, the variable-frequency controller A20 of the variable-air-volume fresh air processing unit 1, the pressure sensor B17 and the electric adjusting butterfly valve A9 are respectively connected with the controller.
Preferably, the fresh air component further comprises a fresh air branch pipe 22 provided with an electric adjusting butterfly valve B10, one end of the fresh air branch pipe 22 is communicated with the fresh air supply pipe 6, and the other end of the fresh air supply pipe 6 is communicated with an air supply outlet 12 of a floor 23 arranged in a laboratory; a ceiling 25 is arranged at the upper part in the laboratory, the ceiling 25 divides the laboratory into an upper space 24 and a lower space 26, and air in the upper space and the lower space can only circulate a small amount through gaps of the ceiling 25 (the ceiling 25 is spliced by a plurality of buckle plates, and gaps exist between adjacent buckle plates); the pressure sensor B17 is provided in the lower space 26; a pressure sensor C18 is arranged in the upper space 24, and the pressure sensor C18 and the pressure sensor B17 are respectively connected with a controller of a laboratory; the upper space 24 is communicated with an air supply outlet arranged on the floor 23; the inlet of the smoke exhaust cabinet 3 is communicated with one end of an air supply pipe 8, and the other end of the air supply pipe 8 is communicated with the upper space 24.
Preferably, the laboratory ceiling 25 is provided with a diffuser air outlet 14 and a room louver air return opening 15; the upper space 24 is internally provided with a plurality of groups of fan coil units 2, the inlets of the fan coil units 2 are communicated with the louver air return openings 15 through pipelines, the outlets of the fan coil units 2 are communicated with the air supply openings 14 of the air diffusers through pipelines, and the louver air return openings 15 and the air supply openings 14 of the air diffusers are both arranged on the suspended ceiling 25. In this embodiment, the outlet of the fresh air supply pipe 6 is communicated with one of the diffuser air supply outlets 14.
Preferably, the exhaust pipe comprises an indoor exhaust section 13 and an outdoor exhaust main pipe 7, one end of the indoor exhaust section 13 is communicated with an outlet of the fume hood 3, and the other end of the indoor exhaust pipe is communicated with the outdoor exhaust main pipe 7 through an electric butterfly valve 11 after sequentially passing through a ceiling 25 and a floor 23 of a laboratory; the outdoor exhaust main pipe 7 is provided with an adsorption purifier 5 and a pressure sensor D19, and the outlet of the adsorption purifier 5 is communicated with the inlet of the variable-frequency exhaust unit 4; the pressure sensor D19 is connected with the variable-frequency controller B21 of the variable-frequency exhaust fan unit 4. In this embodiment, the adsorption purifier 5 is a dry adsorption purifier or a wet spray purifier, but is not limited to the above two.
In this embodiment, the variable air volume fresh air handling unit comprises air inlet section, middle effect filter section, fan section, air outlet section and controller, can increase primary cooling or heating section as required.
The variable air volume fresh air processing unit 1 is arranged outside a laboratory, outdoor fresh air is effectively filtered through the variable air volume fresh air processing unit 1 (a primary cooling section or a heating section can be added as required to carry out primary cooling or heating processing), then is sent into a lower working area space 26 of the laboratory through a fresh air supply pipe 6 and an air supply outlet 14 of an air diffuser, and is sent into an upper space 24 of a suspended ceiling 25 of the laboratory through a fresh air branch pipe 22 and an air supply outlet 12 of a floor 23. The pressure sensor B17 in the lower laboratory space 26 (i.e., the working area) detects the gas pressure (positive or negative pressure) in the space and sends the pressure signal to the controller, and the controller adjusts the opening of the electric control butterfly valve a9 according to the pressure signal, thereby adjusting the amount of fresh air sent from the outside and maintaining the required ambient pressure in the lower indoor space 26. The pressure sensor C18 in the upper space 24 of the laboratory detects the gas pressure (positive pressure or negative pressure) in the space and sends the pressure signal to the controller, and the controller adjusts the opening of the electric adjusting butterfly valve B10 according to the pressure signal, thereby adjusting the amount of fresh outdoor air fed into the upper space 24 and maintaining the pressure in the upper space 24 stable.
The pressure sensor A16 on the fresh air supply pipe 6 detects the positive pressure value in the fresh air pipeline and sends the pressure signal to the controller, the controller sends a frequency modulation instruction to the variable frequency controller A20 of the variable air volume fresh air processing unit 1 according to the pressure signal, and the controller controls the fan rotating speed of the variable air volume fresh air processing unit 1 through the pressure signal. When the demand of fresh air in an indoor working area or a suspended ceiling is increased, the opening of an electric adjusting butterfly valve A9 or an electric adjusting butterfly valve B10 is increased, a pressure sensor A16 arranged on a fresh air pipeline detects that the positive pressure value in the fresh air pipeline is reduced, a frequency increasing signal is input to a frequency conversion controller A20 of a variable air volume fresh air processing unit 1 through a controller, the rotating speed of a fan of the fresh air processing unit is increased to increase the fresh air input volume in a fresh air supply pipe 6, and the frequency increasing signal is stopped from being input until the pressure sensor A16 detects that the positive pressure in the fresh air pipeline is restored to a set value; on the contrary, when the demand of the fresh air volume in the indoor working area or the suspended ceiling is reduced, the opening of the electric adjusting butterfly valve A9 or the electric adjusting butterfly valve B10 is reduced, the pressure sensor A16 arranged on the fresh air supply pipe 6 detects that the positive pressure value in the fresh air supply pipe 6 is increased, the controller inputs a frequency reduction signal to the frequency conversion controller A20 of the variable air volume fresh air processing unit 1, the rotating speed of the variable air volume fresh air processing unit 1 is reduced to reduce the fresh air supply volume in the fresh air supply pipe 6, and the frequency reduction signal is stopped being input until the pressure sensor A16 detects that the positive pressure in the fresh air supply pipe 6 is recovered to the set.
The fume hood 3 is arranged in a lower space 26 (i.e. a working space) in the laboratory. When the smoke exhaust cabinet 3 works, experimenters open the electric valve 11 in advance and start the exhaust fan 4. The working condition of the fume exhaust cabinet is as follows: the experimental personnel open the cabinet door to a certain degree, stretch the hand into the fume exhaust cabinet to carry out experimental operation, discharge the harmful gas produced in the experimental operation process through the exhaust pipe, and discharge the harmful gas to the outside through the variable-frequency exhaust fan unit 4 after purifying the harmful gas by the waste gas dry adsorption purifier 5; at the same time, air in the lower space 26 and the upper space 24 of the laboratory is sucked into the cabinet through the opening of the cabinet door and the air supplementing pipe 8. And a second working condition of the fume exhaust cabinet 3: experimental substances are put into the smoke exhaust cabinet 3 by an experimenter, the cabinet door is closed to observe the reaction condition of the experimental substances in the smoke exhaust cabinet 3, harmful gas generated in the reaction process is exhausted through an exhaust pipe, purified through an adsorption purifier 5 and then exhausted to the outside through a variable-frequency exhaust fan set 4; at the same time, air in the upper laboratory space 24 is sucked into the cabinet through the air supply duct 8. In the utility model, a plurality of fume exhaust cabinets 3 can be arranged in the laboratory, and the indoor air exhaust sections 13 of the fume exhaust cabinets 3 are connected with the same outdoor air exhaust main pipe 7; the corresponding electric butterfly valve 11 is arranged at the indoor air exhaust section 13 of each smoke exhaust cabinet 3 and is in linkage control with the corresponding smoke exhaust cabinet 3, when one smoke exhaust cabinet 3 stops working, the corresponding electric butterfly valve 11 is closed, the air exhaust amount of the outdoor air exhaust main pipe 7 is reduced, the pressure sensor D19 arranged on the outdoor air exhaust main pipe 7 detects that the negative pressure value in the outdoor air exhaust main pipe 7 is increased and sends the signal to the controller, and the controller sends a frequency modulation signal to the frequency conversion controller B24 of the frequency conversion exhaust unit 4, so that the rotating speed of the frequency conversion exhaust unit 4 is reduced, and the purpose of energy conservation is achieved. When a plurality of smoke exhaust cabinets 3 work simultaneously, the pressure sensor D19 arranged on the outdoor exhaust main pipe 7 detects that the negative pressure value in the outdoor exhaust main pipe 7 is reduced and sends the signal to the controller, and the controller sends a frequency modulation signal to the frequency conversion controller B24 of the frequency conversion exhaust fan set 4, so that the rotating speed of the frequency conversion exhaust fan set 4 is increased.
In order to ensure the required environmental temperature in the laboratory working area, a fan-coil unit 2 is arranged in an upper space 24 of the laboratory, outdoor fresh air is sent into a lower space 26 through an air supply pipe 6, mixed with air in the indoor lower space 26, enters the fan-coil unit 2 through a shutter air return opening 15 for cooling or heating treatment, and then is sent into the indoor working area through an air supply opening 14 of a diffuser. The utility model discloses 3 mends wind of well fume chamber, only open through the cabinet door or the gap department air in the inspiratory lower part space 26 has been handled through 2 air conditioners of fan-coil unit, from 24 inspiratory outdoor new trend in upper portion space needn't handle through 2 fan-coil units, have saved 2 new trend air conditioners of indoor fan-coil unit and have handled the energy consumption.
It should be noted that the above is only a preferred embodiment of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that the technical solutions described in the foregoing embodiments can be modified or some technical features can be replaced with equivalents, but any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A variable air volume air processing system for a laboratory is characterized by comprising a fresh air component and an air exhaust component; the fresh air assembly comprises a variable air volume fresh air processing unit and a fresh air supply pipe, the variable air volume fresh air processing unit is arranged outside the laboratory room, the inlet of the variable air volume fresh air processing unit is communicated with the outside atmosphere, and the outlet of the variable air volume fresh air processing unit is communicated with the inlet of the fresh air supply pipe; the outlet of the fresh air supply pipe is communicated with the interior of the laboratory; the fresh air supply pipe is provided with a pressure sensor A and an electric adjusting butterfly valve A, and the pressure sensor A is connected with a variable frequency controller A of the variable air volume fresh air processing unit; a pressure sensor B and a smoke exhaust cabinet are arranged in the laboratory; the exhaust assembly comprises an exhaust pipe and a variable-frequency exhaust unit arranged on the exhaust pipe, and an air outlet of the exhaust cabinet is communicated with the exhaust pipe.
2. The laboratory variable air volume air processing system according to claim 1, wherein the fresh air assembly further comprises a fresh air branch pipe provided with an electric adjusting butterfly valve B, one end of the fresh air branch pipe is communicated with a fresh air supply pipe, and the other end of the fresh air supply pipe is communicated with a floor air supply outlet arranged in the laboratory; the upper part in the laboratory is provided with a suspended ceiling which divides the laboratory into an upper space and a lower space, and the pressure sensor B is arranged in the lower space; a pressure sensor C is arranged in the upper space; the upper space is communicated with an air supply outlet arranged on the floor slab; the inlet of the smoke exhaust cabinet is communicated with one end of the air supply pipe, and the other end of the air supply pipe is communicated with the upper space.
3. The laboratory variable air volume air handling system of claim 2, wherein the laboratory ceiling is provided with diffuser air inlets and room louvered return air inlets; the upper space is internally provided with a plurality of groups of fan coil units, the inlets of the fan coil units are communicated with the shutter air return inlet through pipelines, the outlets of the fan coil units are communicated with the air supply outlet of the air diffuser through pipelines, and the shutter air return inlet and the air supply outlet of the air diffuser are both arranged on the ceiling.
4. The laboratory variable air volume air treatment system of claim 3, wherein the outlet of the fresh air supply duct is in communication with one of the diffuser air supply outlets.
5. The laboratory variable air volume air processing system according to claim 2, wherein the exhaust duct comprises an indoor exhaust section and an outdoor exhaust main pipe, one end of the indoor exhaust section is communicated with an outlet of the fume exhaust cabinet, and the other end of the indoor exhaust duct is communicated with the outdoor exhaust main pipe through an electric butterfly valve after sequentially passing through a ceiling and a floor slab of a laboratory; an adsorption purifier and a pressure sensor D are installed on the outdoor exhaust main pipe, and an outlet of the adsorption purifier is communicated with an inlet of the variable-frequency exhaust unit.
6. The laboratory variable air volume air treatment system according to claim 5, wherein the adsorption purifier is an exhaust gas not limited to a dry adsorption purifier or a wet spray purifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921285553.0U CN210801515U (en) | 2019-08-09 | 2019-08-09 | Variable air volume air treatment system for laboratory |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921285553.0U CN210801515U (en) | 2019-08-09 | 2019-08-09 | Variable air volume air treatment system for laboratory |
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| CN210801515U true CN210801515U (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921285553.0U Active CN210801515U (en) | 2019-08-09 | 2019-08-09 | Variable air volume air treatment system for laboratory |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112484253A (en) * | 2020-11-24 | 2021-03-12 | 珠海格力电器股份有限公司 | Indoor pressure control method, device, controller and exhaust system |
-
2019
- 2019-08-09 CN CN201921285553.0U patent/CN210801515U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112484253A (en) * | 2020-11-24 | 2021-03-12 | 珠海格力电器股份有限公司 | Indoor pressure control method, device, controller and exhaust system |
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