CN202074652U - Differential pressure accurate control system for cleaning air-conditioning system - Google Patents
Differential pressure accurate control system for cleaning air-conditioning system Download PDFInfo
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- CN202074652U CN202074652U CN2011201704812U CN201120170481U CN202074652U CN 202074652 U CN202074652 U CN 202074652U CN 2011201704812 U CN2011201704812 U CN 2011201704812U CN 201120170481 U CN201120170481 U CN 201120170481U CN 202074652 U CN202074652 U CN 202074652U
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Abstract
The utility model discloses a differential pressure accurate control system for a cleaning air-conditioning system comprises a fixed air volume adjusting valve installed on an air supplying branch pipe, a variable frequency fan installed on an air exhausting branch pipe for controlling air exhausting volume of the air exhausting branch pipe, an air exhausting pressure detecting unit for detecting air exhausting pressure of the air exhausting branch pipe in real time and a controller for correspondingly adjusting the air exhausting pressure of the air exhausting branch pipe by regulating rotating speed of the variable frequency fan. The controller controls the variable frequency fan according to air pressure signals detected by the air exhausting pressure detecting unit. The air exhausting pressure detecting unit, the controller and the variable frequency fan form a closed-loop control system for controlling the air exhausting pressure of the air exhausting branch pipe. The differential pressure accurate control system for the cleaning air-conditioning system is reasonable in design, simple in installation and distribution, convenient to use and good in using effect, and can solve the problems that an existing differential pressure control system which utilizes an electric control valve for controlling air exhausting volume is large in errors of adjusting, easy to cause air leakage, severe in resource waste, loud in noise and the like.
Description
Technical field
The utility model relates to a kind of pressure reduction control system, especially relates to a kind of air cleaning and conditioning system pressure reduction accuracy-control system.
Background technology
Use the laboratory for some hospitals, though it does not have very high request to purifying rank, but the internally pressure reduction control accuracy requirement between air-supply blast and the air draft blast in the department purification air-conditioning system, but head and shoulders above zones such as operating room, ICU, thereby the difficulty that its pressure reduction precision is controlled is bigger.Nowadays, the air output in each room is controlled by the volume damper that sets on the blowpipe that enters each room in this laboratory, and exhaust air rate is controlled by the electric control valve of installing on the air draft arm of adorning in each room.In the actual use, because the air output of blowpipe is by deciding volume damper control in each room, thereby need all to detect in real time by the air draft blast of pressure sensor to the air draft arm, and with the detection signal synchronous driving to the DDC (abbreviation of English Direct Digital Control, Direct Digital control) controller, the DDC controller carries out corresponding adjusting again according to testing result to the aperture of institute's installation electric control valve on the air draft arm, to reach pressure reduction precision control requirement.
But, the precision of pressure reduction is difficult to control in the actual debug process, though the air draft electric control valve can accurately be regulated valve area according to the control instruction of DDC controller, because there is precision problem in various degree in valve block, thereby can causes inevitably and leak out or the regulating error problem; And electric control valve can only regulate air quantity under the constant situation of air draft blower fan frequency, thus, also can cause the waste of the energy and the increase of noise.
The utility model content
Technical problem to be solved in the utility model is at above-mentioned deficiency of the prior art, a kind of air cleaning and conditioning system pressure reduction accuracy-control system is provided, it is reasonable in design, install lay easy and use easy to operate, result of use good, the regulating error that can solve existence when adopting electric control valve that the air draft air quantity is regulated and control in the existing pressure reduction control system more greatly, easily cause leak out, energy waste seriously, practical problem such as noise is bigger.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of air cleaning and conditioning system pressure reduction accuracy-control system, it is characterized in that: comprise being installed in the volume damper of deciding that leads in the monitoring area on the blowpipe, be installed in the frequency conversion fan of laying in the monitoring area on the air draft arm and the exhaust air rate of described air draft arm being regulated and control, the air draft blast detecting unit that the air draft blast of described air draft arm is detected in real time with by the rotation speed of fan of frequency conversion fan being regulated and control the controller that the air draft blast of tackling described air draft arm is mutually adjusted, describedly decide volume damper and control by described controller, and described controller is controlled frequency conversion fan according to the wind pressure signal that described air draft blast detecting unit is detected, describedly decide volume damper, frequency conversion fan and described air draft blast detecting unit are controlled by described controller, and described air draft blast detecting unit, described controller and frequency conversion fan are formed the closed-loop control system that the air draft blast of described air draft arm is controlled.
Above-mentioned air cleaning and conditioning system pressure reduction accuracy-control system is characterized in that: also comprise the rotation speed detection unit that the rotation speed of fan to described frequency conversion fan detects in real time, described rotation speed detection unit and described controller join.
Above-mentioned air cleaning and conditioning system pressure reduction accuracy-control system is characterized in that: also comprise the air-supply blast detecting unit that the air-supply blast to described blowpipe detects in real time, described air-supply blast detecting unit and described controller join.
Above-mentioned air cleaning and conditioning system pressure reduction accuracy-control system is characterized in that: also comprise the data transmission unit that joins with described controller, described controller by described data transmission unit be laid in the indoor host computer of remote monitoring and carry out two-way communication.
Above-mentioned air cleaning and conditioning system pressure reduction accuracy-control system is characterized in that: described controller is the DDC controller.
Above-mentioned air cleaning and conditioning system pressure reduction accuracy-control system is characterized in that: also comprise respectively the parameter input unit and the display unit that join with described controller, and described parameter input unit and display unit are integrated into touching display screen.
Above-mentioned air cleaning and conditioning system pressure reduction accuracy-control system is characterized in that: described rotation speed detection unit is a photoelectric encoder.
Above-mentioned air cleaning and conditioning system pressure reduction accuracy-control system is characterized in that: described air draft blast detecting unit is a wind pressure sensor, and described wind pressure sensor is installed on the inwall of described air draft arm.
The utility model compared with prior art has the following advantages:
1, reasonable in design, easy-to-connect and installing lay convenient.
2, use is easy and simple to handle, adopt frequency conversion fan that the exhaust air rate of air draft arm is regulated and control, and form the closed-loop control system that the air draft blast of air draft arm is controlled by air draft blast detecting unit, controller and frequency conversion fan, decide volume damper owing to being equipped with on the blowpipe simultaneously, thereby can accurately control the pressure reduction between air-supply blast and the air draft blast.
3, result of use is good, controller is controlled frequency conversion fan according to the wind pressure signal that air draft blast detecting unit is detected, because frequency conversion fan is realized the variation of air quantity by rotation speed of fan, regulation and control are more accurate with respect to electric control valve, so just can reach energy-conservation, noise abatement and the accurate purpose of controlling air quantity.
4, input cost is low and popularizing application prospect is extensive, and the price of frequency converter and electric control valve is suitable, thereby can not increase input cost, and can effectively be suitable for to the higher zone of other pressure reduction required precision.
In sum, the utility model is reasonable in design, install lay easy and use easy to operate, result of use good, can effectively solve the regulating error that exists when adopting electric control valve that the air draft air quantity is regulated and control in the existing pressure reduction control system and more greatly, easily cause practical problem such as leak out, energy waste is serious, noise is bigger.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is a schematic block circuit diagram of the present utility model.
Description of reference numerals:
1-decides volume damper; The 2-frequency conversion fan; The 3-wind pressure sensor;
The 4-parameter input unit; The 5-display unit; 6-air-supply blast detecting unit;
The 7-data transmission unit; The 8-host computer; The 9-rotation speed detection unit;
The 10-DDC controller.
The specific embodiment
As shown in Figure 1, the utility model comprises being installed in to lead in the monitoring area decides volume damper 1 on the blowpipe, be installed in the frequency conversion fan 2 of laying in the monitoring area on the air draft arm and the exhaust air rate of described air draft arm being regulated and control, the air draft blast detecting unit that the air draft blast of described air draft arm is detected in real time with by the rotation speed of fan of frequency conversion fan 2 being regulated and control the controller that the air draft blast of tackling described air draft arm is mutually adjusted, describedly decide volume damper 1 and control by described controller, and described controller is controlled frequency conversion fan 2 according to the wind pressure signal that described air draft blast detecting unit is detected, describedly decide volume damper 1, frequency conversion fan 2 and described air draft blast detecting unit are controlled by described controller, and described air draft blast detecting unit, described controller and frequency conversion fan 2 are formed the closed-loop control system that the air draft blast of described air draft arm is controlled.
In the present embodiment, the utility model also comprises the rotation speed detection unit 9 that the rotation speed of fan to described frequency conversion fan 2 detects in real time, and described rotation speed detection unit 9 is joined with described controller.Simultaneously, the utility model also comprises the air-supply blast detecting unit 6 that the air-supply blast to described blowpipe detects in real time, and described air-supply blast detecting unit 6 joins with described controller.
In addition, be to realize Long-distance Control, the utility model also comprises the data transmission unit 7 that joins with described controller, described controller by described data transmission unit 7 be laid in the indoor host computer of remote monitoring 8 and carry out two-way communication.
In the present embodiment, described controller is a DDC controller 10, and described rotation speed detection unit 9 is a photoelectric encoder.Simultaneously, the utility model also comprises respectively parameter input unit 4 and the display unit 5 that joins with described controller, and described parameter input unit 4 and display unit 5 are integrated into touching display screen.Described air draft blast detecting unit is a wind pressure sensor 3, and during actual installation, described wind pressure sensor 3 is installed on the inwall of described air draft arm.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of technical solutions of the utility model according to the utility model technical spirit.
Claims (8)
1. air cleaning and conditioning system pressure reduction accuracy-control system, it is characterized in that: comprise being installed in to lead in the monitoring area and decide volume damper (1) on the blowpipe, be installed in the frequency conversion fan (2) of laying in the monitoring area on the air draft arm and the exhaust air rate of described air draft arm being regulated and control, the air draft blast detecting unit that the air draft blast of described air draft arm is detected in real time with by the rotation speed of fan of frequency conversion fan (2) being regulated and control the controller that the air draft blast of tackling described air draft arm is mutually adjusted, describedly decide volume damper (1) and control by described controller, and described controller is controlled frequency conversion fan (2) according to the wind pressure signal that described air draft blast detecting unit is detected, describedly decide volume damper (1), frequency conversion fan (2) and described air draft blast detecting unit are controlled by described controller, and described air draft blast detecting unit, described controller and frequency conversion fan (2) are formed the closed-loop control system that the air draft blast of described air draft arm is controlled.
2. according to the described air cleaning and conditioning system of claim 1 pressure reduction accuracy-control system, it is characterized in that: also comprise the rotation speed detection unit (9) that the rotation speed of fan to described frequency conversion fan (2) detects in real time, described rotation speed detection unit (9) is joined with described controller.
3. according to claim 1 or 2 described air cleaning and conditioning system pressure reduction accuracy-control systems, it is characterized in that: also comprise the air-supply blast detecting unit (6) that the air-supply blast to described blowpipe detects in real time, described air-supply blast detecting unit (6) joins with described controller.
4. according to claim 1 or 2 described air cleaning and conditioning system pressure reduction accuracy-control systems, it is characterized in that: also comprise the data transmission unit (7) that joins with described controller, described controller by described data transmission unit (7) be laid in the indoor host computer of remote monitoring (8) and carry out two-way communication.
5. according to claim 1 or 2 described air cleaning and conditioning system pressure reduction accuracy-control systems, it is characterized in that: described controller is DDC controller (10).
6. according to claim 1 or 2 described air cleaning and conditioning system pressure reduction accuracy-control systems, it is characterized in that: also comprise respectively the parameter input unit (4) and the display unit (5) that join with described controller, and described parameter input unit (4) and display unit (5) are integrated into touching display screen.
7. according to the described air cleaning and conditioning system of claim 2 pressure reduction accuracy-control system, it is characterized in that: described rotation speed detection unit (9) is photoelectric encoder.
8. according to claim 1 or 2 described air cleaning and conditioning system pressure reduction accuracy-control systems, it is characterized in that: described air draft blast detecting unit is wind pressure sensor (3), and described wind pressure sensor (3) is installed on the inwall of described air draft arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201704812U CN202074652U (en) | 2011-05-25 | 2011-05-25 | Differential pressure accurate control system for cleaning air-conditioning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201704812U CN202074652U (en) | 2011-05-25 | 2011-05-25 | Differential pressure accurate control system for cleaning air-conditioning system |
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| Publication Number | Publication Date |
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| CN202074652U true CN202074652U (en) | 2011-12-14 |
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| CN2011201704812U Expired - Lifetime CN202074652U (en) | 2011-05-25 | 2011-05-25 | Differential pressure accurate control system for cleaning air-conditioning system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913466A (en) * | 2015-04-27 | 2015-09-16 | 北京德利迅达科技有限公司 | Automatic control system and method for fan air supply of data center computer room |
| CN104913467A (en) * | 2015-04-27 | 2015-09-16 | 北京德利迅达科技有限公司 | Automatic control system and method for air valves of data center computer room |
| CN104913433A (en) * | 2015-04-27 | 2015-09-16 | 北京德利迅达科技有限公司 | Automatic control system and method for fan exhaust of data center computer room |
| CN111693248A (en) * | 2020-04-22 | 2020-09-22 | 宁波锚点驱动技术有限公司 | Test method for small-air-volume fan |
| CN112240634A (en) * | 2020-12-17 | 2021-01-19 | 浙江大学 | Variable-distance air conditioner air supply tail end capable of balancing air outlet resistance and adjusting method thereof |
| CN113741572A (en) * | 2021-09-10 | 2021-12-03 | 南京机电职业技术学院 | Differential pressure debugging system and method for purification laboratory |
| CN113864886A (en) * | 2021-08-31 | 2021-12-31 | 奥星制药设备（石家庄）有限公司 | Biological safety type clean air conditioning system and control method |
-
2011
- 2011-05-25 CN CN2011201704812U patent/CN202074652U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913466A (en) * | 2015-04-27 | 2015-09-16 | 北京德利迅达科技有限公司 | Automatic control system and method for fan air supply of data center computer room |
| CN104913467A (en) * | 2015-04-27 | 2015-09-16 | 北京德利迅达科技有限公司 | Automatic control system and method for air valves of data center computer room |
| CN104913433A (en) * | 2015-04-27 | 2015-09-16 | 北京德利迅达科技有限公司 | Automatic control system and method for fan exhaust of data center computer room |
| CN104913466B (en) * | 2015-04-27 | 2017-10-27 | 北京德利迅达科技有限公司 | Data center machine room blower fan air-supply automatic control system and method |
| CN104913433B (en) * | 2015-04-27 | 2017-10-27 | 北京德利迅达科技有限公司 | Data center machine room blower fan air draft automatic control system and method |
| CN104913467B (en) * | 2015-04-27 | 2017-12-01 | 北京德利迅达科技有限公司 | Data center machine room air-valve automatic control system and method |
| CN111693248A (en) * | 2020-04-22 | 2020-09-22 | 宁波锚点驱动技术有限公司 | Test method for small-air-volume fan |
| CN112240634A (en) * | 2020-12-17 | 2021-01-19 | 浙江大学 | Variable-distance air conditioner air supply tail end capable of balancing air outlet resistance and adjusting method thereof |
| CN113864886A (en) * | 2021-08-31 | 2021-12-31 | 奥星制药设备（石家庄）有限公司 | Biological safety type clean air conditioning system and control method |
| CN113741572A (en) * | 2021-09-10 | 2021-12-03 | 南京机电职业技术学院 | Differential pressure debugging system and method for purification laboratory |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XI'AN SITENG ENVIRONMENTAL TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SITENG ENGINEERING CO., LTD., XI'AN Effective date: 20150824 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150824 Address after: 5 building, 9 Times Building, No. three, 710075 hi tech Road, Xi'an hi tech Zone, Shaanxi, China Patentee after: Xi'an four Teng Environmental Technology Co., Ltd. Address before: 710075 No. three, No. 9, hi tech Zone, Xi'an hi tech Zone, Shaanxi Patentee before: Siteng Engineering Co., Ltd., Xi'an |
|
| CX01 | Expiry of patent term |
Granted publication date: 20111214 |
|
| CX01 | Expiry of patent term |