CN201917036U - Pressure control device in ventilation air-conditioning system - Google Patents
Pressure control device in ventilation air-conditioning system Download PDFInfo
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- CN201917036U CN201917036U CN2010206283637U CN201020628363U CN201917036U CN 201917036 U CN201917036 U CN 201917036U CN 2010206283637 U CN2010206283637 U CN 2010206283637U CN 201020628363 U CN201020628363 U CN 201020628363U CN 201917036 U CN201917036 U CN 201917036U
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Abstract
The utility model provides a pressure control device in a ventilation air-conditioning system, comprising a sealing box body and a control device, the sealing box body is provided with an air inlet and an air outlet, the air outlet is provided with an air valve; the control device comprises a pitot tube used for detecting a pressure difference, a pressure difference transmitter, a direct digital controller, a control panel setting a pressure value, and an air valve actuator controlling the air valve, the pitot tube is connected with the direct digital controller via the pressure difference controller, the direct digital controller is connected with the air valve actuator, the air valve actuator is connected with the air valve. The pressure control device in a ventilation air-conditioning system is advantaged by high control precision and +/-2% error rate of set rated flow value.
Description
Technical field
The utility model relates to a kind of pressure control device, relates in particular to a kind of pressure control device that is applied in the ventilation and air conditioning system.
Background technology
Be used for being provided with the air conditioning area static pressure during pressure control device, several application modes are arranged in ventilation and air conditioning system, as: the application in local supply air system, the application in exhaust system, the application in air conditioning system with variable, the application in air cleaning and conditioning system, the application in airduct pipeline balance etc.For example: in the floor air supply system the control of chamber static pressure, it can be controlled at chamber, ground static pressure in certain scope according to designing requirement, as 5～10pa, when local chamber static pressure was lower than certain setting value, the valve area of pressure control device increased automatically, increased air-supply; When local chamber static pressure was higher than certain setting value, the valve area of pressure control device turned down automatically, reduced air-supply.
Suitably use pressure-control valve in engineering, can optimization system design, help air-supply, air draft balance, the systematic air flow balance reduces debugging work load.
But existing pressure control device control accuracy is not high, and the error rate that sets the metered flow value is bigger.
The utility model content
At the problems referred to above, the purpose of this utility model is to provide a kind of control accuracy height, set the pressure control device in the less ventilation and air conditioning system of the error rate of metered flow value.
The technical problem of the required solution of the utility model can be achieved through the following technical solutions:
Pressure control device in the ventilation and air conditioning system is characterized in that, comprises seal case and control device, and described seal case is provided with air inlet and air outlet, and described air outlet place is provided with air-valve;
Described control device comprises the control panel of the Pitot tube that is used to detect pressure reduction, pressure difference transmitter, direct digital controller, setup pressure value, the air-valve actuator of control air-valve, described Pitot tube is connected with direct digital controller by pressure difference transmitter, described direct digital controller connects and is connected with the air-valve actuator, and described air-valve actuator is connected with air-valve.
In the utility model, also comprise the control panel that is used for setting pressure, this control panel is connected with direct digital controller, come setup pressure value by control button on the control panel, and control the aperture of air-valve by direct digital controller and air-valve actuator, make ducted static pressure consistent with the force value of setting.
Pressure control device control accuracy height in the ventilation and air conditioning system of the present utility model, set error rate ± 2% of metered flow value.
The utility model can on-the-spot or long-range setting air quantity, control panel of the present utility model can be on-the-spot or long-range demonstration move real-time air quantity.The utility model can be realized by the estate management requirement SECO being set, and also can carry out networking control with automatic building control system (RA).
Description of drawings
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the schematic diagram of control device.
Fig. 3 is an electrical schematic diagram of the present utility model.
The specific embodiment
In order to make technological means of the present utility model, creation characteristic, to reach purpose and effect is easy to understand,, further set forth the utility model below in conjunction with concrete diagram.
Referring to Fig. 1,2 and 3, the pressure control device in a kind of ventilation and air conditioning system comprises seal case 100 and control device 200.The hot-dipping galvanized steel plate of 22# high density (1mm is thick) that seal case 100 adopts Shanghai Baosteel factory to produce is made.Seal case can be by salt air corrosion in 125 hours experiment.The assembling of sealing casing adopts the mechanical caging structure to finish, and does not have welding, connects between casing closely, to guarantee the sealing of structure.The seal case periphery has been set up the high strength suspension hook, with convenient present construction hoisting.
The seal case inner lining as thermal insulation material adopts and does not fire as moulding the plate insulation material.Not firing as moulding the plate insulation material is that one deck 25.4mm is thick, the uniform fire-type of density looks like to mould the plate liner.Its thermal conductivity factor is less than 0.033w/m ℃.This does not fire picture moulds the plate insulation material and does not have any cut edge and be exposed in the air-flow, effectively prevents dewfall.Surfacing is attractive in appearance, and the unit surface can not produce moisture.Not firing as moulding the plate insulation material can anti-maximum air velocity be 20m/s.
Seal case is provided with air inlet and air outlet, and the air outlet place is provided with air-valve (not indicating among the figure); Air-valve has the double-deck zinc-plated valve plate of adiabatic sealing ring to constitute by galvanized steel plain sheet cylindrical tube that adds protective layer and outer rim.It is little to have operating noise, the characteristics that friction loss is few.This air-valve is in inlet 750Pa hydrostatic pressure condition following time, inleakage be lower than the maximum rated intake of inlet 1%.The air-valve adjustable range is 0-100%; Can between the maximum under the control, minimum air quantity, regulate air-valve, do continuous ratio row integration aperture adjusting according to the engineering design technology parameter request.
Control device 200 comprises Pitot tube (figure does not indicate), pressure difference transmitter, direct digital controller 210, the control panel 220 that is used for detecting pressure reduction, the air-valve actuator 230 of controlling air-valve, Pitot tube is connected with direct digital controller by pressure difference transmitter, direct digital controller connects and is connected with the air-valve actuator, and the air-valve actuator is connected with air-valve; Control panel is connected with direct digital controller, comes setup pressure value by control button on the control panel, and controls the aperture of air-valve by direct digital controller and air-valve actuator, makes ducted static pressure consistent with the force value of setting.
Pressure control device control accuracy height in the ventilation and air conditioning system of the present utility model, set error rate ± 2% of metered flow value.
The utility model can on-the-spot or long-range setting air quantity, control panel of the present utility model can be on-the-spot or long-range demonstration move real-time air quantity.The utility model can be realized by the estate management requirement SECO being set, and also can carry out networking control with automatic building control system (BA).
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. the pressure control device in the ventilation and air conditioning system is characterized in that, comprises seal case and control device, and described seal case is provided with air inlet and air outlet, and described air outlet place is provided with air-valve;
Described control device comprises the control panel of the Pitot tube that is used to detect pressure reduction, pressure difference transmitter, direct digital controller, setup pressure value, the air-valve actuator of control air-valve, described Pitot tube is connected with direct digital controller by pressure difference transmitter, described direct digital controller connects and is connected with the air-valve actuator, and described air-valve actuator is connected with air-valve.
2. the pressure control device in the ventilation and air conditioning system according to claim 1, it is characterized in that, also comprise the control panel that is used for setting pressure, this control panel is connected with direct digital controller, come setup pressure value by control button on the control panel, and control the aperture of air-valve by direct digital controller and air-valve actuator, make ducted static pressure consistent with the force value of setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206283637U CN201917036U (en) | 2010-11-26 | 2010-11-26 | Pressure control device in ventilation air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206283637U CN201917036U (en) | 2010-11-26 | 2010-11-26 | Pressure control device in ventilation air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201917036U true CN201917036U (en) | 2011-08-03 |
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ID=44416831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206283637U Expired - Fee Related CN201917036U (en) | 2010-11-26 | 2010-11-26 | Pressure control device in ventilation air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201917036U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393061A (en) * | 2011-11-30 | 2012-03-28 | 苏州市建筑设计研究院有限责任公司 | Pressure-differential controlled air supply outlet |
| CN111023421A (en) * | 2019-12-27 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Static pressure self-adjustment control method and device and air conditioner |
-
2010
- 2010-11-26 CN CN2010206283637U patent/CN201917036U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102393061A (en) * | 2011-11-30 | 2012-03-28 | 苏州市建筑设计研究院有限责任公司 | Pressure-differential controlled air supply outlet |
| CN111023421A (en) * | 2019-12-27 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Static pressure self-adjustment control method and device and air conditioner |
| CN111023421B (en) * | 2019-12-27 | 2021-08-24 | 宁波奥克斯电气股份有限公司 | Static pressure self-adjustment control method and device and air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20131126 |