CN105928570B - Return air measuring device for the cold beam of induction type - Google Patents
Return air measuring device for the cold beam of induction type Download PDFInfo
- Publication number
- CN105928570B CN105928570B CN201610258766.9A CN201610258766A CN105928570B CN 105928570 B CN105928570 B CN 105928570B CN 201610258766 A CN201610258766 A CN 201610258766A CN 105928570 B CN105928570 B CN 105928570B
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- air
- nozzle
- return air
- induction type
- fan housing
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The present invention relates to a kind of return air measuring devices for the cold beam of induction type, including First air section, Secondary Air section, pressure fan connects the cold beam of induction type by nozzle, and differential pressure pickup is placed in the both sides of the nozzle in First air section, the size for measuring the new leeway in nozzle both sides；Frequency converting induced draft fan connects fan housing by nozzle；Indoor return air is introduced by frequency converting induced draft fan and is sent into fan housing, differential pressure pickup is placed in the both sides of the nozzle in Secondary Air section, the size for measuring nozzle both sides return air pressure difference；Four-way valve is connected by tracheae with fan housing aperture, and stacte is placed on four-way valve center, judges whether fan housing air pressure inside is equal with external atmosphere pressure holding by observing flow direction of the flue gas in four-way valve.The present invention can accurately measure back air volume, simple in structure, easy to operate, energy saving, the fluid measurement being also widely applied under other small flow low wind conditions.
Description
Technical field
The present invention relates to a kind of return air measuring device of water-type air conditioner system, especially a kind of returning for the cold beam of induction type
Wind measuring device.
Background technology
The cold beam category air-water-type air conditioner system of induction type, its working principle is that：After pressure fan introduces First air, through spray
Mouth high speed sprays, and negative pressure, room air are generated in cold beam（Secondary Air）It is inhaled by wind deflector；It is cooling（Or heating）Afterwards two
Secondary wind is mixed with First air, is finally sent into indoor.
Currently, the air measuring in air-conditioning system mostly uses Pitot flowmeter for pipe or hot-wire array measuring instrument.However,
In induction type cold girder system system, the air of Secondary Air section is the negative pressure-induced sucking by being generated inside cold beam, wind pressure is small,
Wind speed is low, and Pitot flowmeter for pipe or hot-wire array measuring instrument cause air quantity that can not show or can not be accurate due to extremely insensitive
Really the problems such as measurement, signal deletion, therefore, the measurement of return air amount is also very inaccurate in the cold girder system system of induction type, therefore having must
It is designed and is innovated.
Invention content
The purpose of the present invention is to provide a kind of return air measuring devices for the cold beam of induction type, avoid due to return air air quantity
It is small, wind speed is low and the problem of cannot accurately measure return air amount, the fluid under the low wind speed of small flow is accurately measured with realizing, structure
Simply, easy to operate, it is energy saving.
The present invention is achieved by following technical solution：
A kind of return air measuring device for the cold beam of induction type includes for the First air section of Leads to new breeze, for return air
The Secondary Air section of sucking is induced, the First air section is by pressure fan, nozzle A, fresh wind tube, differential pressure pickup B, the cold beam group of induction type
At the pressure fan is by the cold beam of nozzle A connection induction types, for introducing and being sent by outdoor fresh air in the cold beam of induction type；Institute
The both sides for stating the nozzle A that differential pressure pickup A is placed in First air section, the size for measuring the new leeway in the both sides nozzle A；Institute
It states Secondary Air section to be made of fan housing, smoking device, differential pressure pickup B, nozzle B, frequency converting induced draft fan, the frequency converting induced draft fan passes through
Nozzle B connects fan housing；Indoor return air is introduced by frequency converting induced draft fan and is sent into fan housing, the differential pressure pickup B is placed in
The both sides of nozzle B in Secondary Air section, the size for measuring nozzle B both sides return air pressure difference；The smoking device by four-way valve,
Tracheae and stacte composition, four-way valve are connected by tracheae with fan housing aperture, and the stacte is placed on four-way valve center, passes through observation
Flow direction of the flue gas in four-way valve judges whether fan housing air pressure inside is equal with external atmosphere pressure holding.
The cold beam of induction type is made of panel, shell and shell side plate, wind deflector is provided in shell, in wind deflector
On be provided with surface cooler.
The fan housing is a rectangular closed bellows made of iron sheet, and the middle position of wherein side opens up one small
Hole, fan housing cover on after being connect with backwind tube on the return air inlet of the cold beam of induction type completely, play the work collected return air and reduce wind pressure
With.
The return air measuring device for the cold beam of induction type is for the air measuring that wind speed is within the scope of 0 ~ 0.1m/s.
The beneficial effects of the invention are as follows：
The present invention utilizes a kind of smoke measuring device of pressure balance, and return air is obtained by judging flow of flue gas track
Accurate pressure difference data, and then obtain the data of air quantity, can effectively avoid due to pressure difference is small and the problem of cannot accurately measure air quantity.
The apparatus structure is simple, easy to operate, energy saving, is widely used in the air quantity that wind speed is generally within the scope of 0 ~ 0.1m/s and surveys
Amount.
Description of the drawings
Fig. 1 is the principle schematic of the return air measuring device for the cold beam of induction type of the present invention；
Fig. 2 is the aperture schematic diagram of the return air measuring device for the cold beam of induction type of the present invention；
Fig. 3 is smoking device schematic diagram.
Specific implementation mode
The operation principle and specific method of the present invention are described in further detail below in conjunction with attached drawing, but the present invention protects
Range is without being limited thereto.
As shown in Figure 1 to Figure 3, a kind of return air measuring device for the cold beam of induction type, including First air section 10 and secondary
11 two parts of wind section, First air section 10 are the introducing of fresh air, and Secondary Air section 11 is that the induction of return air sucks.
First air section 10 is made of the cold beam of pressure fan 1, nozzle A3, fresh wind tube 5, differential pressure pickup A4, induction type 7.Air-supply
Outdoor fresh air is introduced and is sent into the cold beam of induction type 7 by machine 1；Nozzle A3 is placed among pressure fan 1 and the cold beam of induction type 7；Pressure
Gap sensor A4 is placed in the both sides of nozzle A3, the size for measuring the new leeway in the both sides nozzle A3；Inside the cold beam of induction type 7
Wind deflector and surface cooler are set.
Secondary Air section 11 is made of fan housing 8, smoking device 9, differential pressure pickup B24, nozzle B 23, frequency converting induced draft fan 2.Wind
Cover 8 is a rectangular closed bellows made of iron sheet；Smoking device 9 is made of four-way valve 12, tracheae 13 and stacte 14, is passed through
Four-way valve 12 is connected by tracheae with the aperture 15 of fan housing 8, and stacte 14 is placed on 12 center of four-way valve, by observing flue gas in four-way valve
Flow direction in 12 judges whether 8 air pressure inside of fan housing is equal with external atmosphere pressure holding, if flue gas is from four-way valve 12
It flows out surface, it was demonstrated that 8 air pressure inside of fan housing is balanced with external atmosphere pressure, and the air quantity that two secondary segment wind turbines are introduced is cold girder system system
Return air amount.
Nozzle B 23 is placed among frequency converting induced draft fan 2 and fan housing 8；Differential pressure pickup B24 is placed in the both sides of nozzle B 13,
Size for measuring 23 both sides return air pressure difference of nozzle B；Indoor return air is introduced and is sent into fan housing 8 by frequency converting induced draft fan 2.
The cold beam 7 of induction type is made of panel, shell and shell side plate, wind deflector is provided in shell, on wind deflector
It is provided with surface cooler.Fan housing 8 is a rectangular closed bellows made of iron sheet, and the middle position of wherein side opens up one small
Hole, fan housing 8 cover on after being connect with backwind tube 6 completely on the return air inlet of the cold beam of induction type 7, play and collect return air and reduce wind pressure
Effect.
As shown in Figure 1, the present invention is at work, pressure fan 1 introduces First air, is sprayed through nozzle A3 high speeds, induction type
Negative pressure, room air are generated in cold beam 7（Secondary Air）Pass through wind deflector（Diagram is not drawn into）It is inhaled into；It is cooling（Or heating）Afterwards
Secondary Air is mixed with First air, is finally sent into indoor.
When carrying out the measurement or control of return air amount, one end of backwind tube 6 is connect and is sealed with fan housing 8, later will
The return air inlet of the cold beam of induction type 7（Diagram is not drawn into）It is covered completely with fan housing 8；Four-way valve 12 is connected with tracheae 13, then will
One end of tracheae 13（It is left）It is inserted perpendicularly into the aperture of fan housing 8；At this point, stacte 14 is lighted, and be disposed below a gas
Pipe 13（Under）Underface, stacte 14 and tracheae 13（Under）Spacing to enable flue gas to flow into tracheae 13（Under）It is interior, it is unsuitable
It is too far；If the track of flue gas is the vertical bronchus 13 along top（On）Outflow, then show air pressure in fan housing 8 with it is outer
Boundary's atmospheric pressure is equal, then the return air pressure difference that the differential pressure pickup B24 mounted on 23 both sides of nozzle B is measured can be obtained by calculating
Go out the exact value of return air amount；If the track of flue gas is along tracheae 13（It is left）It flows to inside fan housing 8, then shows that 8 inside of fan housing is negative
Pressure condition；If the track of flue gas is along tracheae 13（It is right）It flows to outside fan housing 8, then shows that 8 inside of fan housing is barotropic state；This two
The wind pressure value that differential pressure pickup B24 is measured under kind atmospheric pressure state all cannot accurately calculate practical return air amount.So the device exists
In by return air inlet（Diagram is not drawn into）It is covered completely with fan housing 8, and return air decompression can be made to slow down, then dexterously pass through smoke
Device 9 judges the atmospheric pressure state inside fan housing 8, to ensure that differential pressure pickup B24 obtains accurate wind pressure value, if flue gas is from four
It flows out the surface of port valve 12, it was demonstrated that 8 air pressure inside of fan housing is balanced with external atmosphere pressure, and the air quantity that two secondary segment wind turbines are introduced is
The return air amount of cold girder system system.
The present invention utilizes a kind of smoke measuring device of pressure balance, and return air is obtained by judging flow of flue gas track
Accurate pressure difference data, and then obtain the data of air quantity, can effectively avoid due to pressure difference is small and the problem of cannot accurately measure air quantity.
The apparatus structure is simple, easy to operate, energy saving, is widely used in the air quantity that wind speed is generally within the scope of 0 ~ 0.1m/s and surveys
Amount.
Illustrative description is carried out to the present invention above in conjunction with attached drawing, realization of the invention is not limited by aforesaid way
System, if the various improvement of inventive concept and technical scheme of the present invention progress are used, or the not improved structure by the present invention
Think and technical solution directly applies to other occasions, is within the scope of the invention.
Claims (4)
1. a kind of return air measuring device for the cold beam of induction type, include for Leads to new breeze First air section (10), be used for back
The Secondary Air section (11) of wind induction sucking, it is characterised in that：The First air section (10) is by pressure fan (1), nozzle A (3), fresh air
(5), differential pressure pickup A (4), the cold beam of induction type (7) composition are managed, the pressure fan (1) is cold by nozzle A (3) connection induction types
Beam (7), for introducing and being sent by outdoor fresh air in the cold beam of induction type (7)；The differential pressure pickup A (4) is placed in First air
The both sides of nozzle (3) in section (10), the size for measuring the new leeway in nozzle A (3) both sides；The Secondary Air section (11) by
Fan housing (8), smoking device (9), differential pressure pickup B (24), nozzle B (23), frequency converting induced draft fan (2) composition, the frequency conversion air inducing
Machine (2) connects fan housing (8) by nozzle B (23)；Indoor return air is introduced by frequency converting induced draft fan (2) and is sent into fan housing (8),
The differential pressure pickup B (24) is placed in the both sides of the nozzle B (23) in Secondary Air section (11), for measuring nozzle B (23) two
The size of side return air pressure difference；The smoking device (9) is made of four-way valve (12), tracheae (13) and stacte (14), four-way valve
(12) it is connected with the aperture (15) of fan housing (8) by tracheae, the stacte (14) is placed on four-way valve (12) center, passes through observation
Flow direction of the flue gas in four-way valve (12) judges whether fan housing (8) air pressure inside is equal with external atmosphere pressure holding；Two
Secondary wind section (11) passes through backwind tube（6）And fan housing（8）With the cold beam of induction type of First air section (10)（7）Return air inlet connection.
2. the return air measuring device according to claim 1 for the cold beam of induction type, it is characterised in that：The induction type is cold
Beam (7) is made of panel, shell and shell side plate, and wind deflector is provided in shell, surface cooler is provided on wind deflector.
3. the return air measuring device according to claim 1 for the cold beam of induction type, it is characterised in that：The fan housing (8)
For a rectangular closed bellows made of iron sheet, the middle position of wherein side opens up an aperture (15), fan housing (8) with return
It is covered on completely on the return air inlet of the cold beam of induction type (7) after air hose (6) connection, play the role of collecting return air and reduces wind pressure.
4. the return air measuring device according to claim 1 for the cold beam of induction type, it is characterised in that：It is described to be used to induce
The return air measuring device of the cold beam of type is for the air measuring that wind speed is within the scope of 0 ~ 0.1m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610258766.9A CN105928570B (en) | 2016-04-25 | 2016-04-25 | Return air measuring device for the cold beam of induction type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610258766.9A CN105928570B (en) | 2016-04-25 | 2016-04-25 | Return air measuring device for the cold beam of induction type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105928570A CN105928570A (en) | 2016-09-07 |
| CN105928570B true CN105928570B (en) | 2018-10-12 |
Family
ID=56837131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610258766.9A Expired - Fee Related CN105928570B (en) | 2016-04-25 | 2016-04-25 | Return air measuring device for the cold beam of induction type |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6370906B1 (en) * | 1999-05-10 | 2002-04-16 | Chin-Sheng Kuo | Wind inlet and outlet system for an air conditioner |
| CN202133068U (en) * | 2011-06-16 | 2012-02-01 | 上海大智科技发展有限公司 | Active beam-cooling induction unit |
| CN203131984U (en) * | 2013-02-04 | 2013-08-14 | 李建荣 | Inducible type chilled beam |
| CN104302983A (en) * | 2012-03-16 | 2015-01-21 | 奥义霍尔顿集团有限公司 | Chilled beam with multiple modes |
| CN204923300U (en) * | 2015-09-08 | 2015-12-30 | 上海中房建筑设计有限公司 | Single wind channel variable blast volume and cold roof beam combined system of passive form |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2423537Y (en) * | 2000-05-12 | 2001-03-14 | 威昂电器发展(深圳)有限公司 | Economic domestic ventilating machine |
-
2016
- 2016-04-25 CN CN201610258766.9A patent/CN105928570B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6370906B1 (en) * | 1999-05-10 | 2002-04-16 | Chin-Sheng Kuo | Wind inlet and outlet system for an air conditioner |
| CN202133068U (en) * | 2011-06-16 | 2012-02-01 | 上海大智科技发展有限公司 | Active beam-cooling induction unit |
| CN104302983A (en) * | 2012-03-16 | 2015-01-21 | 奥义霍尔顿集团有限公司 | Chilled beam with multiple modes |
| CN203131984U (en) * | 2013-02-04 | 2013-08-14 | 李建荣 | Inducible type chilled beam |
| CN204923300U (en) * | 2015-09-08 | 2015-12-30 | 上海中房建筑设计有限公司 | Single wind channel variable blast volume and cold roof beam combined system of passive form |
Non-Patent Citations (1)
| Title |
|---|
| "主动式冷梁性能实验研究";翁文兵 等;《建筑节能》;20160229;第9-12页 * |
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| CN105928570A (en) | 2016-09-07 |
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Granted publication date: 20181012 Termination date: 20210425 |