CN204513695U - A kind of temperature difference electric control valve of air-conditioning system - Google Patents
A kind of temperature difference electric control valve of air-conditioning system Download PDFInfo
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- CN204513695U CN204513695U CN201420768880.2U CN201420768880U CN204513695U CN 204513695 U CN204513695 U CN 204513695U CN 201420768880 U CN201420768880 U CN 201420768880U CN 204513695 U CN204513695 U CN 204513695U
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- valve
- temperature difference
- blower fan
- fan coil
- coil pipe
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- Y02B60/50—
Abstract
The utility model relates to a kind of temperature difference electric control valve of air-conditioning system, this temperature difference electric control valve is arranged on tail-end blower fan coil pipe, it is characterized in that: described temperature difference electric control valve comprises inflow temperature sensor, leaving water temperature sensors, YE, wireless communication module and valve; Wherein, inflow temperature sensor setting is on the inlet channel of tail-end blower fan coil pipe; On the outlet conduit of tail-end blower fan coil pipe, be disposed with valve and leaving water temperature sensors near tail-end blower fan coil pipe position; Inflow temperature sensor, leaving water temperature sensors and wireless communication module are electrically connected with YE respectively by cable; Described valve and described YE are mechanically connected.The utility model effectively can reduce pump energy consumption, improves the hydraulic misadjustment problem of pipe network, thus can be widely used in the variable-flow air conditioning water system adopting the temperature difference to control.
Description
Technical field
The utility model relates to a kind of air-conditioning system hydraulic balancing automatic control device, particularly about a kind of temperature difference electric control valve of air-conditioning system.
Background technology
Existing central air conditioning chilled water system temperature difference flow-changing control method (comprising fixed difference difference vari-able flow control and temp .-differential vari-able flow control), it is applicable to the more consistent air-conditioning system of the load changing rate of each terminal temperature difference.But in adjustment process, when portion distal end user closes, whole pipe network hydraulic misadjustment in various degree can be caused, the actual Inlet and outlet water temperature difference of portion distal end equipment and chilled water is caused to supply the setting temperature difference of return main to there is larger difference, fail to reach the control effects of expection, finally cause the larger fluctuation of indoor temperature and humidity, reduce the Stability and veracity of control.
As shown in Figure 1, when chilled water for return main set the temperature difference constant, when certain customers close, total flow needed for end reality is by by original Q
0be reduced to Q
1, pipe system performance curve will by S
0become S
1, the characteristic curve after pump variable frequency becomes n
1, some B is now pump operating point, and now each terminal temperature difference is different hydraulic misadjustment states.The variable water volume system that the temperature difference controls, when end total load and the temperature difference one timing, the total flow needed for system is also determined, so at same total flow Q
1under, the pipe system performance curve after end control valve regulates generally has S
2and S
3two kinds of situations: if most control valve opening value reduces in adjustment process, then pipe network impedance increases, and pipe system performance curve will become S
2, water pump curve becomes n
2, this time point C is the operating point of water pump, and pump energy consumption comparatively B point increases to some extent; On the contrary, if most control valve opening value increases in adjustment process, then pipe network impedance reduces, and pipe system performance curve will become S
3, water pump curve becomes n
3, this time point D is the operating point of water pump, and pump energy consumption comparatively B point decreases.
But, for existing equipment or the method for improving hydraulic misadjustment, the control valve of undercurrent equipment and the control valve simultaneously action often of crossing flow device in adjustment process, if do not limited the minimum aperture of valve, may increase the impedance of pipe network to some extent, namely pipe system performance curve becomes S
2situation, make the energy-saving effect of water pump unsatisfactory.In addition, existing control method or equipment are only applicable to the air-conditioning system adopting chilled water to control for return main's fixed difference difference, and for the air-conditioning system adopting chilled water to control for return main's temp .-differential, not yet propose effective solution.
Summary of the invention
For the problems referred to above, the purpose of this utility model is to provide one and effectively improves air-conditioning system hydraulic misadjustment problem, lowers pump energy consumption, reduces the temperature difference electric control valve of the air-conditioning system of cost of investment.
For achieving the above object, the utility model takes following technical scheme: a kind of temperature difference electric control valve of air-conditioning system, this temperature difference electric control valve is arranged on tail-end blower fan coil pipe, the water inlet of described tail-end blower fan coil pipe connects inlet channel, and the delivery port of described tail-end blower fan coil pipe connects outlet conduit; It is characterized in that: described temperature difference electric control valve comprises inflow temperature sensor, leaving water temperature sensors, YE, wireless communication module and valve; Wherein, described inflow temperature sensor setting is on the described inlet channel of described tail-end blower fan coil pipe; On the described outlet conduit of described tail-end blower fan coil pipe, be disposed with described valve and leaving water temperature sensors near described tail-end blower fan coil pipe position; Described inflow temperature sensor, leaving water temperature sensors and wireless communication module are electrically connected with described YE respectively by cable; Described valve and described YE are mechanically connected; Described inflow temperature sensor gathers the inflow temperature of described tail-end blower fan coil pipe and is sent to described YE; Described leaving water temperature sensors gathers the leaving water temperature of described tail-end blower fan coil pipe and is sent to described YE; Described wireless communication module is connected with central air conditioner system automatic control system, and real-time reception chilled water supplies the setting temperature approach of return main and is sent to described YE; Described YE regulates the aperture of described valve according to setting temperature approach, inflow temperature and leaving water temperature.
Described YE comprises control unit, performance element and control panel; Described control panel is for inputting the minimum opening value of described valve and being sent to described control unit; The inflow temperature that described control unit sends according to described inflow temperature sensor and the leaving water temperature that described leaving water temperature sensors sends calculate the actual temperature difference, and the setting temperature difference that the actual temperature difference and described wireless communication module send is compared, the control signal obtained is sent to described performance element, and described performance element regulates the aperture of described valve within the scope of minimum opening value to standard-sized sheet.
Described YE adopts angle distance electric executor or straight distance power-driven actuating.
Described wireless communication module adopts 3G or gsm wireless communication module.
Described valve adopts adjustable ball valve or adjustable butterfly valve.
The utility model is owing to taking above technical scheme, it has the following advantages: 1, the utility model is owing to being set with the minimum opening value of valve, by controlling opening of valve within the scope of minimum aperture to standard-sized sheet, make the impedance that additionally can not increase pipe network when adjust flux on the basis of system nominal operating mode, be conducive to reducing further the energy consumption of water pump under vari-able flow control, well can improve the hydraulic misadjustment problem of system simultaneously.2, the utility model is owing to being provided with wireless communication module, the setting temperature approach of chilled water for return main is accepted in real time by wireless communication module, not only be applicable to the air-conditioning system that fixed difference difference controls, be also applicable to the air-conditioning system adopting temp .-differential to control, there is the larger scope of application.3, the utility model can replace the multiple balanced valve in existing air-conditioning system due to the temperature difference electric control valve adopted, and the waterpower imbalance problem of air-conditioning system under improving temperature difference control mode, be conducive to reducing pump energy consumption and reducing cost of investment, also reduce the difficulty of the system maintenance management too much caused because of valve.The utility model effectively can reduce pump energy consumption, improves the waterpower imbalance problem of pipe network, improves the Stability and veracity of Cooling and Heat Source house steward temperature difference control mode, thus can be widely used in the variable-flow air conditioning water system adopting the temperature difference to control.
Accompanying drawing explanation
Fig. 1 is pipe network and pump characteristic under different adjustment mode in existing air-conditioning system
Fig. 2 is installation site of the present utility model schematic diagram
Fig. 3 is structural representation of the present utility model
Fig. 4 is method flow schematic diagram of the present utility model
Detailed description of the invention
Below in conjunction with drawings and Examples, the technical solution of the utility model is described in further detail.
As shown in Figure 2 and Figure 3, the water inlet of existing tail-end blower fan coil pipe 1 connects inlet channel 2, and the delivery port of tail-end blower fan coil pipe 1 connects outlet conduit 3.The temperature difference electric control valve of the utility model air-conditioning system comprises inflow temperature sensor 4, leaving water temperature sensors 5, YE 6, wireless communication module 7 and valve 8.Wherein, inflow temperature sensor 4 is arranged on the inlet channel 2 of tail-end blower fan coil pipe 1; On the outlet conduit 3 of tail-end blower fan coil pipe 1, be disposed with valve 8 and leaving water temperature sensors 5 near tail-end blower fan coil pipe 1 position.Inflow temperature sensor 4, leaving water temperature sensors 5 and wireless communication module 7 are electrically connected with YE 6 respectively by cable.Valve 8 and YE 6 are mechanically connected.Inflow temperature sensor 4 gathers the inflow temperature of tail-end blower fan coil pipe 1 and is sent to YE 6; Leaving water temperature sensors 5 gathers the leaving water temperature of tail-end blower fan coil pipe 1 and is sent to YE 6; Wireless communication module 7 is connected with existing air-conditioning system automatic control system, and real-time reception chilled water supplies the setting temperature approach of return main and is sent to YE 6; YE 6 is according to the aperture of setting temperature approach, inflow temperature and leaving water temperature control valve 8.
YE 6 comprises control unit 61, performance element 62 and control panel 63.Control panel 63 is for inputting the minimum opening value of valve 8 and being sent to control unit 61, the inflow temperature that control unit 61 sends according to inflow temperature sensor 4 and the leaving water temperature that leaving water temperature sensors 5 sends calculate the actual temperature difference, and the setting temperature difference that the actual temperature difference and wireless communication module 7 send is compared, the control signal obtained is sent to performance element 62, by the aperture of performance element 62 control valve 8 within the scope of minimum opening value to standard-sized sheet, and then the discharge of tail-end blower fan coil pipe 1 is regulated.
In above-described embodiment, YE 6 can be angle distance electric executor, also can be straight distance power-driven actuating.Angle distance electric executor can do rotary type motion by by-pass valve control; Straight distance power-driven actuating can do rectilinear motion by by-pass valve control.
In above-described embodiment, wireless communication module 7 can adopt 3G or gsm wireless communication module.
In above-described embodiment, valve 8 can adopt adjustable ball valve or adjustable butterfly valve, as V-shaped valve door.
As shown in Figure 4, the temperature difference control method of the temperature difference electric control valve of the utility model air-conditioning system, comprises the following steps:
1) in the commissioning of central air conditioning systems stage, regulate each valve 8 aperture, make air-conditioning system reach static hydraulic balancing, the opening value of now corresponding each valve 8, is the minimum opening value of valve 8.
2) the minimum opening value of each valve 8 is inputted corresponding control unit 61 by control panel 63.
3) inflow temperature of inflow temperature sensor 4 Real-time Collection associated end fan coil 1, and be sent to control unit 61; The leaving water temperature of leaving water temperature sensors 5 Real-time Collection associated end fan coil 1, and be sent to control unit 61.
4) wireless communication module 7 is connected with the automatic control system of existing air-conditioning system, and real-time reception chilled water for the setting temperature approach T1 of return main, and is sent to control unit 61.
5) control unit 61 calculates actual temperature difference T2 according to the inflow temperature received and leaving water temperature, and compared by setting temperature approach T1 and actual temperature difference T2, the control signal obtained is sent to performance element 62 simultaneously.
Control unit 61 calculates the difference of actual temperature difference T2 and setting temperature difference T1, and according to the aperture of difference size equal percentage control valve 8, difference is larger, and the opening value regulated is larger, concrete:
When actual temperature difference T2 is less than setting temperature difference T1, control unit 61 sends the control signal of reduction valve 8 aperture and is sent to performance element 62, the discharge of tail-end blower fan coil pipe is reduced, actual temperature difference T1 raises, when actual temperature difference T2=sets temperature difference T1 or valve 8 aperture is decreased to minimum opening value, control unit 61 no longer sends control signal, and now valve 8 aperture keeps constant.
When actual temperature difference T2 is greater than setting temperature difference T1, control unit 61 sends the control signal of increase valve 8 aperture and is sent to performance element 62, the discharge of tail-end blower fan coil pipe is increased, actual temperature difference T1 reduces, until when actual temperature difference T2=sets temperature difference T1 or valve 8 standard-sized sheet, control unit 61 no longer sends signal, and now valve 8 aperture keeps constant.
6) performance element 62 operates after receiving control signal accordingly, the aperture of control valve 8 within the scope of valve 8 minimum opening value to standard-sized sheet, the actual temperature difference T2 of the Inlet and outlet water of tail-end blower fan coil pipe 1 is reached or close to the setting temperature difference T1 of chilled water for return main, namely makes the discharge of tail-end blower fan coil pipe 1 reach or close actual required discharge.
The various embodiments described above are only for illustration of the utility model; wherein the structure of each parts, connected mode and manufacture craft etc. all can change to some extent; every equivalents of carrying out on the basis of technical solutions of the utility model and improvement, all should not get rid of outside protection domain of the present utility model.
Claims (5)
1. a temperature difference electric control valve for air-conditioning system, this temperature difference electric control valve is arranged on tail-end blower fan coil pipe, and the water inlet of described tail-end blower fan coil pipe connects inlet channel, and the delivery port of described tail-end blower fan coil pipe connects outlet conduit; It is characterized in that: described temperature difference electric control valve comprises inflow temperature sensor, leaving water temperature sensors, YE, wireless communication module and valve; Wherein, described inflow temperature sensor setting is on the described inlet channel of described tail-end blower fan coil pipe; On the described outlet conduit of described tail-end blower fan coil pipe, be disposed with described valve and leaving water temperature sensors near described tail-end blower fan coil pipe position; Described inflow temperature sensor, leaving water temperature sensors and wireless communication module are electrically connected with described YE respectively by cable; Described valve and described YE are mechanically connected; Described inflow temperature sensor gathers the inflow temperature of described tail-end blower fan coil pipe and is sent to described YE; Described leaving water temperature sensors gathers the leaving water temperature of described tail-end blower fan coil pipe and is sent to described YE; Described wireless communication module is connected with central air conditioner system automatic control system, and real-time reception chilled water supplies the setting temperature approach of return main and is sent to described YE; Described YE regulates the aperture of described valve according to setting temperature approach, inflow temperature and leaving water temperature.
2. the temperature difference electric control valve of a kind of air-conditioning system as claimed in claim 1, is characterized in that: described YE adopts angle distance electric executor or straight distance power-driven actuating.
3. the temperature difference electric control valve of a kind of air-conditioning system as described in any one of claim 1 ~ 2, is characterized in that: described wireless communication module adopts 3G or gsm wireless communication module.
4. the temperature difference electric control valve of a kind of air-conditioning system as described in any one of claim 1 ~ 2, is characterized in that: described valve adopts adjustable ball valve or adjustable butterfly valve.
5. the temperature difference electric control valve of a kind of air-conditioning system as claimed in claim 3, is characterized in that: described valve adopts adjustable ball valve or adjustable butterfly valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420768880.2U CN204513695U (en) | 2014-12-08 | 2014-12-08 | A kind of temperature difference electric control valve of air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420768880.2U CN204513695U (en) | 2014-12-08 | 2014-12-08 | A kind of temperature difference electric control valve of air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204513695U true CN204513695U (en) | 2015-07-29 |
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ID=53711669
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|---|---|---|---|
| CN201420768880.2U Expired - Fee Related CN204513695U (en) | 2014-12-08 | 2014-12-08 | A kind of temperature difference electric control valve of air-conditioning system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390323A (en) * | 2014-12-08 | 2015-03-04 | 中国建筑设计咨询有限公司 | Electric temperature difference control valve of air-conditioning system and temperature difference control method of electric temperature difference control valve |
| CN105202836A (en) * | 2015-09-08 | 2015-12-30 | 珠海格力电器股份有限公司 | Water flow detection method, device and system for hot water machine unit |
| CN106482281A (en) * | 2015-08-28 | 2017-03-08 | 青岛海尔空调电子有限公司 | A kind of control device for handpiece Water Chilling Units, control method and handpiece Water Chilling Units |
| CN107504659A (en) * | 2017-09-27 | 2017-12-22 | 安徽华斯源新能源科技有限公司 | A kind of HVAC end number amount Flow-rate adjustment temperature control system |
| CN114198825A (en) * | 2021-11-11 | 2022-03-18 | 青岛海尔空调电子有限公司 | Control method and device for single cooling of chilled water inter-row air conditioner and inter-row air conditioner |
| CN114383174A (en) * | 2022-01-13 | 2022-04-22 | 珠海格力电器股份有限公司 | Unit control method and device and unit |
-
2014
- 2014-12-08 CN CN201420768880.2U patent/CN204513695U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390323A (en) * | 2014-12-08 | 2015-03-04 | 中国建筑设计咨询有限公司 | Electric temperature difference control valve of air-conditioning system and temperature difference control method of electric temperature difference control valve |
| CN104390323B (en) * | 2014-12-08 | 2017-02-22 | 中国建筑设计咨询有限公司 | Electric temperature difference control valve of air-conditioning system and temperature difference control method of electric temperature difference control valve |
| CN106482281A (en) * | 2015-08-28 | 2017-03-08 | 青岛海尔空调电子有限公司 | A kind of control device for handpiece Water Chilling Units, control method and handpiece Water Chilling Units |
| CN105202836A (en) * | 2015-09-08 | 2015-12-30 | 珠海格力电器股份有限公司 | Water flow detection method, device and system for hot water machine unit |
| CN107504659A (en) * | 2017-09-27 | 2017-12-22 | 安徽华斯源新能源科技有限公司 | A kind of HVAC end number amount Flow-rate adjustment temperature control system |
| CN114198825A (en) * | 2021-11-11 | 2022-03-18 | 青岛海尔空调电子有限公司 | Control method and device for single cooling of chilled water inter-row air conditioner and inter-row air conditioner |
| CN114383174A (en) * | 2022-01-13 | 2022-04-22 | 珠海格力电器股份有限公司 | Unit control method and device and unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20191208 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |