CN201310667Y - Electronic dynamic balancing electric adjustable valve capable of realizing remote monitor and control - Google Patents
Electronic dynamic balancing electric adjustable valve capable of realizing remote monitor and control Download PDFInfo
- Publication number
- CN201310667Y CN201310667Y CNU2008201699600U CN200820169960U CN201310667Y CN 201310667 Y CN201310667 Y CN 201310667Y CN U2008201699600 U CNU2008201699600 U CN U2008201699600U CN 200820169960 U CN200820169960 U CN 200820169960U CN 201310667 Y CN201310667 Y CN 201310667Y
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Abstract
The utility model relates to an electronic dynamic balancing valve, and aims to provide an electronic dynamic balancing valve which is applied on the balancing throttling of a central air-conditioning water system in transmission and distribution processes, and has the function of remote monitor and control. The valve comprises an adjustable valve, wherein the adjustable valve, a pressure sensor, an electric performer, the adjustable valve, an air temperature sensor, an adjustable valve intelligent controller and a water temperature sensor form an electronic dynamic balancing electric adjustable valve unit, wherein a network communication module, the pressure sensor, the electric performer, the adjustable valve, the air temperature sensor and the water temperature sensor are respectively connected with the adjustable valve intelligent controller through cables. When the valve is applied in central air-conditioning and central heating pipe network water system flow capacity balancing control and thermal comfort throttling control and real time monitor and control of pipe networks, energy efficiency ratio of transmission and distribution of water systems can be apparently improved, and the energy-saving effect is obvious.
Description
Technical field
The utility model relates to a kind of electronic type dynamic balance valve, a kind of specifically electronic type dynamic balance valve that is applied to the balance throttling of central air conditioning water system transmission ﹠ distribution process and has remote monitoring and control function.
Background technique
Ubiquity the hydraulic misadjustment phenomenon in the central air conditioning water system transmission and distribution network, the pipe network water force unbalance easily causes the waste of system's energy and the increase of equipment operation noise, and dynamic balance motor-driven modulating valve technology is to solve the hydraulic equilibrium of air conditioner end equipment water system transmission ﹠ distribution and the best means of Energy Saving Control at present.The central air conditioning water system pipe network becomes increasingly complex and is huge now, in the water budget process of pipe network, often need each valve is carried out artificial debugging the right a large amount of wastes that after finishing a large amount of debugging work, cause energy owing to the effective monitoring and the control that have lacked valve.
The intelligent valve device of electronic transient equiliblium and throttling control one is as the intelligent integrated device of air quality control with water system transmission ﹠ distribution throttling control, not only has air thermal comfort throttling control function, and utilize integrated dynamic flow intelligent balance function to realize the hydraulic equilibrium of transmission ﹠ distribution node, thereby improve the transmission ﹠ distribution Energy Efficiency Ratio of pipe network system, the synthesis energy saving effect is very remarkable.
The intelligent valve device of electronic transient equiliblium and throttling control one makes the air that provides that it can be more perfect invite travelling comfort and throttling equilibrium function after increasing remote monitoring and control module.Can finish monitoring constantly and control in a control centre to each intelligent valve device.
The dynamic balance motor-driven modulating valve of widespread usage claims electronic dynamic adjustments valve again at present, be a kind of pressure independent type electric control valve in essence with mechanical self-powering type automatic flow equilibrium function, the principle of the dynamic flow equilibrium function of this valve is very simple, when being the two ends pressure reduction DP=P1-P3 change at random of one-piece type or combined dynamic balance motor-driven valve, utilize mechanical Differential Pressure Controller (device) constant by the pressure difference value DP1=P1-P2 at the pressure difference value DP2=P2-P3 automatic control and adjustment spool two ends at change differential pressure control valve door two ends, perhaps utilize mechanical self-powering type pressure balance control valve (device) to guarantee regulating spool pressure at two ends difference DP2=P2-P3 automatic constant by the pressure difference value DP1=P1-P2 that changes differential pressure control valve door two ends, when the pressure reduction autobalance of the spool two ends of electric control valve, the corresponding motor regulated valve function that realizes the dynamic flow balance.
Dynamic balance motor-driven valve based on the realization of spring mechanical self-powering type principle, having (1) pressure balance controller (or title " differential pressure control valve ") also is hydraulic resistance element in essence, and this pressure difference occupies about 50% of dynamic balance motor-driven valve node total pressure head P at least.On fluid transmission and distribution network arbitrary node, this transmission ﹠ distribution energy consumption of nearly 50% is inreal saves; (2) do not have real high-precision sensor measuring device, be difficult to realize high-precision flow measurement and Balance Control during actual motion.Though the flow control deviation of many product famous brand signs can reach 5%, long-time conformity and the poor accuracy of using the back flow, (3) air-conditioning system cooling/heat the transmission ﹠ distribution operating mode can not realize automaticallying switch.If there is not the intelligent automatic switching of summer in winter pattern, by the dynamic balance motor-driven modulating valve of mode initialization debugging in summer winter during mode operation partly or entirely disequilibrium, can't realize accurate control, final result has wasted the transmission ﹠ distribution energy consumption, has reduced the stability of a system and thermal comfort; (4) it is undesirable that less than normal, the bad adaptability of the dynamic balance motor-driven modulating valve equilibrium flow value of pressure reduction DP1 fixed, on-the-spot secondary are provided with the back control characteristic, debug difficulties, and it is very complicated to regulate and revise controlled parameter; (5) mechanical self-powering type principle exist fatigue life problem and complex structure, particularly mechanical type pressure balance controller in the easy fatigue damage of thin film membrane; (6) signals such as the node pressure of distributing system, pressure reduction, flow can't be realized shortcomings such as the long-range setting of BA system and intelligent monitoring.For this reason, the inventor had once proposed several different methods, promptly adopt the generation information electronic technology to realize a kind of dynamic balance motor-driven modulating valve of electronic type principle, comprise: (one) is embedded into intelligent controller based on high-grade intelligent feature calculation method, and carry out senior combined integrated chemical control system in conjunction with differential pressure pickup, analog amount motorized adjustment butterfly valve, realize having the controlling method of the dynamic flow balance electric modulating valve of desirable valve regulating characteristic; (2) realize a kind of pressure independent type motor-operated control valve implementation method based on plug-in type flow transducer, intelligent controller, analog amount motor-operated control valve and embedded software technology with desirable valve regulating characteristic; (3) utilize two pressure transducer differential pressure sensors, intelligent controller, analog amount motor-operated control valve and embedded advanced algorithm technology to constitute realize ideal equal percent regulating characteristic and have the electric control valve of automatic flow equilibrium function of a kind of electrical principles.Above electric control valve door device all can be called for short Electronic-Type Dynamic Balance Electric Control Valve.Of the present utility model mainly is to increase the infinite network module on the basis of Electronic-Type Dynamic Balance Electric Control Valve, convenient remote centralized monitoring and control to each Electronic-Type Dynamic Balance Electric Control Valve.
Incorporate intelligent valve device is controlled at present known electronic transient equiliblium and the throttling that does not also have discovery to have remote monitoring and control function.This intelligent balance control throttle valve gear also has functions such as refrigerating/heating pattern automatic switchover control, electronic dynamic flow Balance Control, thermal comfort control and remote monitoring simultaneously.
The model utility content
Main purpose of the present utility model is to overcome deficiency of the prior art, provides a kind of and is used to realize the balance throttling of central air conditioning water system transmission ﹠ distribution process and has remote monitoring and the intelligent valve device of control function.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions.
The utility model provides a kind of Electronic-Type Dynamic Balance Electric Control Valve of realizing remote monitoring and control, comprise modulating valve 103, modulating valve 103 is formed Electronic-Type Dynamic Balance Electric Control Valve unit 100 with pressure transducer 101, electric actuator 102, modulating valve 103, air temperature sensor 104, modulating valve intelligent controller 105, cooling-water temperature sensor 106; Network communication module 200, pressure transducer 101, electric actuator 102, modulating valve 103, air temperature sensor 104, cooling-water temperature sensor 106 are connected to modulating valve intelligent controller 105 by cable respectively.
As a kind of improvement, described network communication module 200 is connected with modulating valve intelligent controller 105 by cable, and network communication module 200 is placed on Electronic-Type Dynamic Balance Electric Control Valve 100; Perhaps network communication module 200 is integrated in modulating valve controller 105 inside, becomes built-in network communication module.
As a kind of improvement, described network communication module 200 is cable network communication modules, is connected with control centre by the Local Area Network arrangement; Perhaps network communication module 200 is wireless network communication modules, is connected with control centre by wireless communication receiver.
As a kind of improvement, described pressure transducer 101 has two, is contained in modulating valve 103 entry ends and outlet end respectively.
As a kind of improvement, described pressure transducer 101 is differential pressure pickups, and the measuring pressure mouth of pipe of its high voltage terminal, low voltage terminal is connected respectively on the tube wall of modulating valve 103 entry ends and outlet end.
As a kind of improvement, described electric actuator 102 is angle stroke electric actuator or straight stroke electric final controlling element.
As a kind of improvement, described modulating valve 103 is that angle stroke motorized adjustment butterfly valve, angle stroke motorized adjustment ball valve or straight stroke electric are regulated seat valve.
As a kind of improvement, described water temperature sensor 106 is standard RI product or digital temperature sensor, is installed on modulating valve 103 valve bodies with overlap joint or infix form.
As a kind of improvement, described air temperature sensor is standard RI product or digital temperature sensor, and installation form is that metope is installed or airduct inserts.
Model utility servant had once proposed several different methods, promptly adopt the generation information electronic technology to realize a kind of dynamic balance motor-driven modulating valve of electronic type principle, be called for short Electronic-Type Dynamic Balance Electric Control Valve, the utility model increases remote control module on the basis of Electronic-Type Dynamic Balance Electric Control Valve, realize monitoring and control to Electronic-Type Dynamic Balance Electric Control Valve.
Working principle with Electronic-Type Dynamic Balance Electric Control Valve of remote monitoring and control function mainly is following steps:
(1) the transient equiliblium pressure differential resetting value Δ P at setting valve two ends in modulating valve intelligent controller 105
SWith the target air temperature setting value;
(2) read the measured value of cooling-water temperature sensor 106 in the central air conditioning water system transmission and distribution network, determine that according to the standard that is provided with the working state of intelligent controller is heating mode or refrigeration mode; Intelligent controller is carried out PID positive interaction algorithm under the refrigeration mode, and intelligent controller is carried out PID reaction algorithm under the heating mode;
(3) pass through the dynamic differential pressure Δ P that air temperature sensor 104 and pressure transducer 101 are measured air temperatures and valve two ends
P
(4) intelligent controller 105 compares according to air temperature measured value and air temperature setting value, carries out the electronics valve opening X value of pid algorithm output unitization; According to formula
Or
Calculate nondimensional valve mechanical opening ξ, and utilize analog amount output directly to regulate the mechanical opening ξ of controlling and driving analog amount electric actuator 102.
(5) network communication module 200 is connected with modulating valve intelligent controller 105 by cable, the network communication module uploads to control centre by wireless communication networks or wired local area network with the information of modulating valve intelligent controller inside, thereby comprises that information such as pressure reduction, flow, water temperature finish remote monitoring.
(6) network communication module 200 is accepted the information that control centre sends, and modulating valve intelligent controller 105 is passed in control information, finishes telecontrol thereby directly drive modulating valve 103 by electric actuator 102.
The beneficial effects of the utility model are:
The valving that the utility model provides not only has thermal comfort throttling control function, and also has functions such as refrigerating/heating pattern automatic switchover control, electronic dynamic flow Balance Control, remote monitoring and control simultaneously.This Electronic-Type Dynamic Balance Electric Control Valve with remote monitoring and control function belongs to a kind of pressure independent type control valve with desirable equal percent regulating characteristic, and its operating pressure differential initial value is little, through-current capability is big, simple in structure, reliable; And can have a try to this electric control valve and monitor and may inform, improve the energy conservation of pipe network greatly.When this Electronic-Type Dynamic Balance Electric Control Valve is applied to the monitoring constantly of central air-conditioner, central heat supply pipe network water flow system flow Balance Control, thermal comfort throttling control and pipe network and controls, can significantly improve the transmission ﹠ distribution Energy Efficiency Ratio of water system, energy-saving effect is fairly obvious.
Description of drawings
Fig. 1 is structural representation of valve broken section and a connection diagram among the embodiment;
Among the figure: 100 Electronic-Type Dynamic Balance Electric Control Valves, 200 network communication modules, 101 pressure transducers, 102 electric actuator, 103 modulating valve, 104 air temperature sensor, 105 modulating valve intelligent controllers, 106 cooling-water temperature sensors.
Embodiment
With reference to the accompanying drawings 1, will be described in detail the utility model below:
The utility model comprises Electronic-Type Dynamic Balance Electric Control Valve 100, network communication module 200, pressure transducer 101, electric actuator 102, modulating valve 103, air temperature sensor 104, modulating valve intelligent controller 105, cooling-water temperature sensor 106.
Described pressure transducer 101, electric actuator 102, modulating valve 103, air temperature sensor 104, cooling-water temperature sensor 106 are by being connected to modulating valve intelligent controller 105 by cable.Network communication module 200 is connected to modulating valve intelligent controller 105 by cable, perhaps is built in modulating valve intelligent controller 105 inside.
Modulating valve intelligent controller 105 is embedded in or downloads a kind of " program of thermal comfort throttling control and the control of electronic dynamic flow intelligent balance ".Utilize this program, modulating valve intelligent controller 105 qualitatively judges according to the measurement temperature value of cooling-water temperature sensor, with decision refrigeration mode or heating mode work, usually when spending less than 20, water temperature selects refrigeration mode automatically, automatically selecting when water temperature is spent greater than 30 is heating mode, 20～30 degree are transition zone, keep last operating mode (water temperature of air conditioner refrigerating pattern is generally less than 10 degree, and the water temperature of heating mode is generally greater than 50 degree).Modulating valve intelligent controller 105 both can adopt the universal controller that has senior mathematical function computing function and can realize pid control algorithm, the intelligent controller product that also can develop the specially exploitation of single-chip microprocessor MCU (for example based on).
Dynamic balance motor-driven modulating valve implementation method step of the present utility model is as follows:
(1) the transient equiliblium pressure differential resetting value Δ P at setting valve two ends in modulating valve intelligent controller 105
SWith the target air temperature setting value;
(2) read the measured value of cooling-water temperature sensor 106 in the central air conditioning water system transmission and distribution network, determine that according to the standard that is provided with the working state of intelligent controller is heating mode or refrigeration mode; Intelligent controller is carried out PID positive interaction algorithm under the refrigeration mode, and intelligent controller is carried out PID reaction algorithm under the heating mode;
(3) pass through the dynamic differential pressure Δ P that air temperature sensor 104 and pressure transducer 101 are measured air temperatures and valve two ends
P
(4) intelligent controller 105 compares according to air temperature measured value and air temperature setting value, carries out the electronics valve opening X value of pid algorithm output unitization; According to formula
Or
Calculate nondimensional valve mechanical opening ξ, and utilize analog amount output directly to regulate the mechanical opening ξ of controlling and driving analog amount electric actuator 102.
(5) network communication module 200 is connected with modulating valve intelligent controller 105 by cable, the network communication module uploads to control centre by wireless communication networks or wired local area network with the information of modulating valve intelligent controller inside, thereby comprises that information such as pressure reduction, flow, water temperature finish remote monitoring.
(6) network communication module 200 is accepted the information that control centre sends, and modulating valve intelligent controller 105 is passed in control information, finishes telecontrol thereby directly drive modulating valve 103 by electric actuator 102.
When reality is used, only need to change the program of modulating valve intelligent controller 105, can also realize linear adjustment characteristic or parabola control characteristic, and these desirable control characteristics all belong to the adjusting of pressure independent type, and have automatic flow intelligent balance function and thermal comfort control function.
Obviously, the utility model is not limited to above embodiment, and many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought protection domain of the present utility model.
Claims (9)
1, a kind of Electronic-Type Dynamic Balance Electric Control Valve of realizing remote monitoring and control, comprise modulating valve (103), it is characterized in that modulating valve (103) is formed Electronic-Type Dynamic Balance Electric Control Valve unit (100) with pressure transducer (101), electric actuator (102), modulating valve (103), air temperature sensor (104), modulating valve intelligent controller (105), cooling-water temperature sensor (106); Network communication module (200), pressure transducer (101), electric actuator (102), modulating valve (103), air temperature sensor (104), cooling-water temperature sensor (106) are connected to modulating valve intelligent controller (105) by cable respectively.
2, the Electronic-Type Dynamic Balance Electric Control Valve of realizing remote monitoring and control according to claim 1, it is characterized in that, described network communication module (200) is connected with modulating valve intelligent controller (105) by cable, and network communication module (200) is placed on Electronic-Type Dynamic Balance Electric Control Valve (100); Perhaps network communication module (200) is integrated in modulating valve controller (105) inside, becomes built-in network communication module.
3, the Electronic-Type Dynamic Balance Electric Control Valve of realizing remote monitoring and control according to claim 1 is characterized in that, described network communication module (200) is the cable network communication module, is connected with control centre by the Local Area Network arrangement; Perhaps network communication module (200) is the wireless network communication module, is connected with control centre by wireless communication receiver.
4, the Electronic-Type Dynamic Balance Electric Control Valve of realizing remote monitoring and control according to claim 1 is characterized in that, described pressure transducer (101) has two, is contained in modulating valve (103) entry end and outlet end respectively.
5, according to the described Electronic-Type Dynamic Balance Electric Control Valve of realizing remote monitoring and control of claim 1, it is characterized in that, described pressure transducer (101) is a differential pressure pickup, and the measuring pressure mouth of pipe of its high voltage terminal, low voltage terminal is connected respectively on the tube wall of modulating valve (103) entry end and outlet end.
According to the described Electronic-Type Dynamic Balance Electric Control Valve of realizing remote monitoring and control of claim 1, it is characterized in that 6, described electric actuator (102) is angle stroke electric actuator or straight stroke electric final controlling element.
According to the described Electronic-Type Dynamic Balance Electric Control Valve of realizing remote monitoring and control of claim 1, it is characterized in that 7, described modulating valve (103) is that angle stroke motorized adjustment butterfly valve, angle stroke motorized adjustment ball valve or straight stroke electric are regulated seat valve.
8, according to the described Electronic-Type Dynamic Balance Electric Control Valve of realizing remote monitoring and control of claim 1, it is characterized in that, described water temperature sensor (106) is standard RI product or digital temperature sensor, is installed on modulating valve (103) valve body with overlap joint or infix form.
9, according to the described Electronic-Type Dynamic Balance Electric Control Valve of realizing remote monitoring and control of claim 1, described air temperature sensor (104) is standard RI product or digital temperature sensor, and installation form is that metope is installed or airduct inserts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201699600U CN201310667Y (en) | 2008-12-09 | 2008-12-09 | Electronic dynamic balancing electric adjustable valve capable of realizing remote monitor and control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201699600U CN201310667Y (en) | 2008-12-09 | 2008-12-09 | Electronic dynamic balancing electric adjustable valve capable of realizing remote monitor and control |
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| CN201310667Y true CN201310667Y (en) | 2009-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201699600U Expired - Lifetime CN201310667Y (en) | 2008-12-09 | 2008-12-09 | Electronic dynamic balancing electric adjustable valve capable of realizing remote monitor and control |
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| CN103017833A (en) * | 2012-12-14 | 2013-04-03 | 卓旦春 | Handheld debugging instrument |
| CN103629414A (en) * | 2013-12-20 | 2014-03-12 | 北京金房暖通节能技术股份有限公司 | Intelligent flow regulating controller for heat supply pipe network system and regulating and controlling method thereof |
| CN104407630A (en) * | 2014-11-19 | 2015-03-11 | 江苏天泽环保科技有限公司 | Control method of fluid flow control valve based on sensor network |
| CN104613213A (en) * | 2015-01-23 | 2015-05-13 | 苏州巨瀚阀门有限公司 | Remote control valve |
| CN105333207A (en) * | 2015-12-11 | 2016-02-17 | 中国航空工业集团公司西安飞机设计研究所 | Bleed air valve based on flow adjustment |
| CN105697830A (en) * | 2016-04-13 | 2016-06-22 | 安徽康成工业产品设计有限公司 | Gas pressure medium integration rotator for industrial pressure reducing valve |
| CN106015718A (en) * | 2016-06-06 | 2016-10-12 | 淮南市鸿裕工业产品设计有限公司 | Thermal efficiency loss reduction control device of hydraulic control valve |
| CN107061844A (en) * | 2016-12-15 | 2017-08-18 | 青岛精锐机械制造有限公司 | Intelligent fluid homeostasis control device |
| CN107435759A (en) * | 2017-08-15 | 2017-12-05 | 柳州声光万家科技有限公司 | A kind of water-carrying capacity regulates and controls water valve |
| CN107956910A (en) * | 2016-10-14 | 2018-04-24 | 上海熊猫机械(集团)有限公司 | Intelligent running water protective device |
| CN108958101A (en) * | 2018-06-19 | 2018-12-07 | 杨永生 | A kind of Internet of Things intelligence intake-discharge pipe road assembly and its management system |
| CN110030493A (en) * | 2019-04-24 | 2019-07-19 | 浙江双林环境股份有限公司 | Intelligent control fluid distributor |
| CN113074323A (en) * | 2021-03-31 | 2021-07-06 | 杨大松 | Intelligent voltage regulation control system and method |
| US11092354B2 (en) | 2019-06-20 | 2021-08-17 | Johnson Controls Tyco IP Holdings LLP | Systems and methods for flow control in an HVAC system |
| US11149976B2 (en) | 2019-06-20 | 2021-10-19 | Johnson Controls Tyco IP Holdings LLP | Systems and methods for flow control in an HVAC system |
| WO2022000372A1 (en) * | 2020-07-01 | 2022-01-06 | 杭州联和工具制造有限公司 | Intelligent valve |
| US11391480B2 (en) | 2019-12-04 | 2022-07-19 | Johnson Controls Tyco IP Holdings LLP | Systems and methods for freeze protection of a coil in an HVAC system |
| US11624524B2 (en) | 2019-12-30 | 2023-04-11 | Johnson Controls Tyco IP Holdings LLP | Systems and methods for expedited flow sensor calibration |
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- 2008-12-09 CN CNU2008201699600U patent/CN201310667Y/en not_active Expired - Lifetime
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| CN103017833A (en) * | 2012-12-14 | 2013-04-03 | 卓旦春 | Handheld debugging instrument |
| CN103017833B (en) * | 2012-12-14 | 2015-07-22 | 卓旦春 | Handheld debugging instrument |
| CN103629414A (en) * | 2013-12-20 | 2014-03-12 | 北京金房暖通节能技术股份有限公司 | Intelligent flow regulating controller for heat supply pipe network system and regulating and controlling method thereof |
| CN104407630A (en) * | 2014-11-19 | 2015-03-11 | 江苏天泽环保科技有限公司 | Control method of fluid flow control valve based on sensor network |
| CN104613213A (en) * | 2015-01-23 | 2015-05-13 | 苏州巨瀚阀门有限公司 | Remote control valve |
| CN105333207A (en) * | 2015-12-11 | 2016-02-17 | 中国航空工业集团公司西安飞机设计研究所 | Bleed air valve based on flow adjustment |
| CN105333207B (en) * | 2015-12-11 | 2018-08-24 | 中国航空工业集团公司西安飞机设计研究所 | A kind of bleed valve based on flow-rate adjustment |
| CN105697830A (en) * | 2016-04-13 | 2016-06-22 | 安徽康成工业产品设计有限公司 | Gas pressure medium integration rotator for industrial pressure reducing valve |
| CN106015718A (en) * | 2016-06-06 | 2016-10-12 | 淮南市鸿裕工业产品设计有限公司 | Thermal efficiency loss reduction control device of hydraulic control valve |
| CN107956910A (en) * | 2016-10-14 | 2018-04-24 | 上海熊猫机械(集团)有限公司 | Intelligent running water protective device |
| CN107061844A (en) * | 2016-12-15 | 2017-08-18 | 青岛精锐机械制造有限公司 | Intelligent fluid homeostasis control device |
| CN107435759A (en) * | 2017-08-15 | 2017-12-05 | 柳州声光万家科技有限公司 | A kind of water-carrying capacity regulates and controls water valve |
| CN108958101A (en) * | 2018-06-19 | 2018-12-07 | 杨永生 | A kind of Internet of Things intelligence intake-discharge pipe road assembly and its management system |
| CN110030493A (en) * | 2019-04-24 | 2019-07-19 | 浙江双林环境股份有限公司 | Intelligent control fluid distributor |
| US11092354B2 (en) | 2019-06-20 | 2021-08-17 | Johnson Controls Tyco IP Holdings LLP | Systems and methods for flow control in an HVAC system |
| US11149976B2 (en) | 2019-06-20 | 2021-10-19 | Johnson Controls Tyco IP Holdings LLP | Systems and methods for flow control in an HVAC system |
| US11644215B2 (en) | 2019-06-20 | 2023-05-09 | Johnson Controls Tyco IP Holdings LLP | Systems and methods for flow control in an HVAC system |
| US11391480B2 (en) | 2019-12-04 | 2022-07-19 | Johnson Controls Tyco IP Holdings LLP | Systems and methods for freeze protection of a coil in an HVAC system |
| US12055309B2 (en) | 2019-12-04 | 2024-08-06 | Tyco Fire & Security Gmbh | Systems and methods for freeze protection of a coil in an HVAC system |
| US11624524B2 (en) | 2019-12-30 | 2023-04-11 | Johnson Controls Tyco IP Holdings LLP | Systems and methods for expedited flow sensor calibration |
| WO2022000372A1 (en) * | 2020-07-01 | 2022-01-06 | 杭州联和工具制造有限公司 | Intelligent valve |
| CN113074323A (en) * | 2021-03-31 | 2021-07-06 | 杨大松 | Intelligent voltage regulation control system and method |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090916 |