CN2872447Y - Constant air-quantity cabin-width adjuster for testing indoor environment - Google Patents
Constant air-quantity cabin-width adjuster for testing indoor environment Download PDFInfo
- Publication number
- CN2872447Y CN2872447Y CN 200520047926 CN200520047926U CN2872447Y CN 2872447 Y CN2872447 Y CN 2872447Y CN 200520047926 CN200520047926 CN 200520047926 CN 200520047926 U CN200520047926 U CN 200520047926U CN 2872447 Y CN2872447 Y CN 2872447Y
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- venturi valve
- blast volume
- blast
- air
- venturi
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- Expired - Lifetime
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Abstract
A wide-range constant-blast volume regulating device for indoor environmental test cabin is composed of a blower 1 and Venturi valves. The utility model is characterized in that: the blower 1 is provided with a frequency transformer; a main air channel is composed of a blast pipe and a Venturi valve 2 with fixed blast volume. A Venturi valve 3 with variable blast volume is equipped on a blast discharge pipeline of a Venturi valve 1 with fixed blast volume through a by-pass pipeline. An output pipeline of the Venturi valve 3 with variable blast volume is connected with the blast inlet of the blower 1 after filtration. The adaptation of the coordination of Venturi valves with fixed blast volume and an electric Venturi valve could improve the blast volume control precision, extend the blast volume adjustment range, facilitate stable blast volume in the whole ventilation process, represent the natural status and guarantee the reliability and authenticity of the test data of the indoor environmental test cabin.
Description
Technical field
The utility model relates to a kind of indoor environment testing cabinet wide region permanent wind quantity regulating device, belongs to method of environmental monitoring and pick-up unit class, especially is suitable for the usefulness of the evaluation of indoor living environment quality.
Background technology
In the modern society that people-oriented, people are except the harm that the large natural environment of depending on for existence is subjected to havoc day by day and brings is fully paid close attention in addition, and indoor environments such as the room that also begins to pay close attention to, office are to health effects.This is because the human physilogical characteristics that form in nature long-term evolution process are set out, and the environmental factors such as heat, sound, light, air quality of having promoted mutual understanding gradually are to the material impact of people's health, comfortable and work efficiency.The modern spends indoor the average time more than 80%～90%, can imagine in so long exposure duration, under the so big contact area, the quality of IAQ (indoor air quality), indoor thermal environment, indoor acoustic environment and Interior Illumination Environment situation, how huge to the healthy influence of people.
Human body and environment carry out a kind of performance that heat interchange is a Human Physiology, and the human body temperature regulating system has determined physiological thermal comfort sensation.Radiation, convection current and evaporation are the principal modes that human body and environment carry out heat interchange.And heat mainly is because the metabolism of human body produces.Under normal circumstances, when the thermal environment disturbance appears in the external world, the temperature control system of human body can be kept 37 ℃ of healths.
Along with since the popularizing gradually of the middle of this century air-conditioning system,, more and more caused people's attention for the thermal comfort problems of indoor environment.The tradition air-conditioning method is to limit the gas velocity of environment in lower scope, simultaneously, the temperature of environment also remains on the metastable lower level, through practice and checking for many years, from health and energy consumption two aspects, there is some problem in this control method.
For example, the at present domestic and international disclosed indoor environment testing cabinet of great majority, in simulating chamber during ventilated environment, still be by the frequency converter of routine and the adjusting that fits into the sector-style amount between valve, but because surge phenomenon causes can not realizing air quantity under little air quantity situation stable regulation appear in blower fan.So at the true nature ventilation state that in fact can not reach under the physical environment, thereby cause to bring incredible conclusion to the monitoring result of indoor environment testing cabinet like this.
Therefore, propose a kind of new wide region permanent wind quantity regulating device, become an important topic that solves in indoor environment testing cabinet scientific research and the practice.
The utility model content
This indoor environment testing cabinet wide region permanent wind quantity regulating device, form by blower fan 1 and venturi valve, it is characterized in that: the blower fan 1 that will use frequency converter, form main defeated air channel by ajutage and certain air quantity venturi valve 2, and deciding by a bypass line one variable air rate venturi valve 3 to be installed on the air-out pipeline of air quantity venturi valve 1, and allow the export pipeline of this variable air rate venturi valve 3 join with the air inlet of blower fan 1 behind the gas after filtration.
This indoor environment testing cabinet wide region permanent wind quantity regulating device according to above technical scheme proposition, because taking to decide air quantity venturi valve and electronic venturi valve cooperatively interacts after this design, improve the precision of air quantity control, increased the scope that air quantity is regulated; Make the air quantity in the whole ventilation process more steady, can show the test of state of nature indoor environment more truly, guarantee the reliable true of indoor environment testing cabinet Monitoring Data.
Description of drawings
Accompanying drawing 1 is the utility model structural representation;
Accompanying drawing 2 is user mode figure.
Embodiment
This indoor environment testing cabinet wide region permanent wind quantity regulating device as shown in the figure, it is to a kind of inventive improvements that cooperates, carries out volume adjusting apparatus between the frequency converter of tradition by routine and valve, its concrete improvement is as follows: the blower fan 1 that will use frequency converter, form main defeated air channel by ajutage and certain air quantity venturi valve 2, and deciding by a bypass line one variable air rate venturi valve 3 to be installed on the air-out pipeline of air quantity venturi valve 1, and allow the export pipeline of this variable air rate venturi valve 3 join with the air inlet of blower fan 1 behind the gas after filtration.
The principle of work of this indoor environment testing cabinet wide region permanent wind quantity regulating device is as follows:
Decide the air quantity range of adjustment of air quantity venturi valve, when realizing that little air quantity is regulated, reduce rotation speed of fan, increase the aperture of variable air rate venturi valve simultaneously by frequency converter.When realizing that big air quantity is regulated, improve rotation speed of fan by frequency converter, reduce the aperture of variable air rate venturi valve simultaneously.
Because blower fan uses frequency converter, by airduct with decide air quantity venturi valve family of power and influence door and combine,, realize the air quantity adjusting by just air quantity venturi valve is installed on the by-pass line.
Air quantity venturi valve is decided in flow testing device control among the figure aperture and blower fan frequency.When air requirement increases, reduce the just aperture and the blower fan frequency of air quantity venturi valve; When air requirement reduces, increase the aperture of variable air rate venturi valve, improve the rotating speed of blower fan.
Claims (1)
1, a kind of indoor environment testing cabinet wide region permanent wind quantity regulating device, form by blower fan (1) and venturi valve, it is characterized in that: the blower fan (1) that will use frequency converter, form main defeated air channel by ajutage and certain air quantity venturi valve (2), and on the air-out pipeline of deciding air quantity venturi valve (1), one variable air rate venturi valve (3) is installed, and allow the export pipeline of this variable air rate venturi valve (3) join with the air inlet of blower fan (1) behind the gas after filtration by a bypass line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520047926 CN2872447Y (en) | 2005-12-23 | 2005-12-23 | Constant air-quantity cabin-width adjuster for testing indoor environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520047926 CN2872447Y (en) | 2005-12-23 | 2005-12-23 | Constant air-quantity cabin-width adjuster for testing indoor environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2872447Y true CN2872447Y (en) | 2007-02-21 |
Family
ID=37740790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520047926 Expired - Lifetime CN2872447Y (en) | 2005-12-23 | 2005-12-23 | Constant air-quantity cabin-width adjuster for testing indoor environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2872447Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763450A (en) * | 2019-11-12 | 2020-02-07 | 宁波奥克斯电气股份有限公司 | Constant air volume function test method |
| CN112212656A (en) * | 2020-09-27 | 2021-01-12 | 王国斌 | Air inlet drying device capable of intelligently controlling air inlet amount |
-
2005
- 2005-12-23 CN CN 200520047926 patent/CN2872447Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763450A (en) * | 2019-11-12 | 2020-02-07 | 宁波奥克斯电气股份有限公司 | Constant air volume function test method |
| CN110763450B (en) * | 2019-11-12 | 2021-04-02 | 宁波奥克斯电气股份有限公司 | Constant air volume function test method |
| CN112212656A (en) * | 2020-09-27 | 2021-01-12 | 王国斌 | Air inlet drying device capable of intelligently controlling air inlet amount |
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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: SHANGHAI JIANKE INSPECTION CO., LTD. Free format text: FORMER OWNER: SHANGHAI CITY BUILDING SCIENCE RESEARCH INSTITUTE ( GROUP ) CO., LTD. Effective date: 20090605 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI CITY BUILDING SCIENCE RESEARCH INSTITUTE Free format text: FORMER NAME: SHANGHAI CITY BUILDING SCIENCE RESEARCH INSTITUTE CO.LTD. |
|
| CP03 | Change of name, title or address |
Address after: Shanghai City, Xuhui District Wanping Road No. 75, zip code: 200032 Patentee after: SHANGHAI RESEARCH INSTITUTE OF BUILDING SCIENCES (Group) Co.,Ltd. Address before: Shanghai City, Xuhui District Wanping Road No. 75, zip code: 200032 Patentee before: SHANGHAI BUILDING SCIENCE RESEARCH INSTITUTE Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20090605 Address after: Shanghai Wanping Road No. 75 Building No. 2, zip code: 200032 Patentee after: SHANGHAI JIANKE TECHNICAL ASSESSMENT OF CONSTRUCTION Co.,Ltd. Address before: Shanghai City, Xuhui District Wanping Road No. 75, zip code: 200032 Patentee before: SHANGHAI RESEARCH INSTITUTE OF BUILDING SCIENCES (Group) Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070221 |
|
| EXPY | Termination of patent right or utility model |