CN207702671U - A kind of water pump of central air conditioner energy conserving system - Google Patents
A kind of water pump of central air conditioner energy conserving system Download PDFInfo
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- CN207702671U CN207702671U CN201721817926.5U CN201721817926U CN207702671U CN 207702671 U CN207702671 U CN 207702671U CN 201721817926 U CN201721817926 U CN 201721817926U CN 207702671 U CN207702671 U CN 207702671U
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Abstract
The utility model discloses a kind of water pump of central air conditioner energy conserving systems, including temperature sensor, pressure sensor, micro-control machine, frequency converter and motor；The micro-control machine includes signal isolation conditioning conversion module, analog input card, signal scale conversion module, server, output board card and liquid crystal display, the analog input card is connected by signal scale conversion module with server, and the server is connected by output board card with the frequency converter；The temperature sensor and pressure sensor are connected with micro-control machine, the working frequency that the micro-control machine passes through Frequency Converter Control motor.By acquiring the temperature difference in central air conditioning water system, pressure difference provides controlled quentity controlled variable in real time by the analysis and operation of micro-control machine, to change freezing, the cooling water flow of system, to reach the energy-efficient purpose of water pump of central air conditioner.
Description
Technical field
The utility model is related to pump energy saving field more particularly to a kind of water pump of central air conditioner energy conserving systems.
Background technology
Or existing water pump of central air conditioner energy-saving and frequency-variable technology is with pressure adjusting water pump frequency or with temperature back tune
Water-saving pump frequency, although two ways is attained by the effect of the energy saving adjusting of water pump of central air conditioner to a certain extent, not
It is maximum energy-saving scheme, when tail end of central air conditioner load changes, each road chilled water supply and return water temperature and terminal pressure are all
It can change therewith, Gu controlling water pump of central air conditioner working efficiency in a manner of temperature or pressure merely is unable to reach maximization section
Can, the closed-loop control of complete water pump part should add the pattern of temperature back combination adjusting to reach central hollow water transfer with hydraulic pressure
Pump energy-efficient effect.
Utility model content
In order to solve the above technical problems, the utility model provide it is a kind of by acquire central air conditioning water system in the temperature difference,
Pressure difference provides controlled quentity controlled variable in real time by the analysis and operation of micro-control machine, to change freezing, the cooling water flow of system, to reach
To the energy-efficient purpose of water pump of central air conditioner.
A kind of water pump of central air conditioner energy conserving system, including temperature sensor, pressure sensor, micro-control machine, frequency converter and electricity
Machine, the micro-control machine include signal isolation conditioning conversion module, analog input card, signal scale conversion module, server, output board
Card and liquid crystal display, the temperature sensor and pressure sensor improve conversion module and analog input card phase by signal isolation
Even, the analog input card is connected by signal scale conversion module with server, the server by output board card with it is described
Frequency converter is connected, and the frequency converter is connected with the motor, the working frequency for controlling motor.
Further include a low voltage complete set in said program, the low voltage complete set includes change-over switch and contactor,
For the working condition between switch motor.
In said program, the server includes database and rule base, and the database root is advised according to the operation of rule base
Then carry out big data processing.
In said program, the liquid crystal display is connected with server, for freezing temperature difference, output frequency, behaviour
It notes down, fault-signal and alarm signal are shown.
The beneficial effects of the utility model are compared with prior art：By acquire central air conditioning water system in the temperature difference and
Pressure difference provides time-varying control amount to adjust frequency converter output frequencies at different levels, to control by the analysis and operation of micro-control machine PID
The rotating speed of fine frozen water pump, the flow of dynamic regulation cooling water make the import and export temperature approaches of cooling water obscure micro-control machine given
Optimal value, to ensure central air conditioner main machine at any time be in optimal conversion efficiency state under run, with realize cooling water pump and
Air-conditioner host energy-saving run under optimum condition.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model water pump of central air conditioner energy conserving system.
Specific implementation mode
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.
As described in Figure 1, a kind of water pump of central air conditioner energy conserving system, including temperature sensor, pressure sensor, micro-control machine,
Frequency converter and motor；The micro-control machine includes signal isolation conditioning conversion module, analog input card, signal scale conversion module, clothes
Business device, output board card and liquid crystal display, the temperature sensor and pressure sensor improve conversion module by signal isolation
It is connected with analog input card, the analog input card is connected by signal scale conversion module with server, and the server passes through defeated
Go out board with the frequency converter to be connected, the frequency converter is connected with the motor, the working frequency for controlling motor.
When tail end of central air conditioner load changes, each road chilled water supply and return water temperature and terminal pressure change therewith,
54TA, 55TA water temperature sensor are installed on host cooling water return water and outlet pipe, every water temperature sensor is through transfer wire
It is connected with micro-control machine, PT type pressure sensors is installed near cooling tower, every pressure sensor is through wire transmission and micro-control
Machine is connected, and collected resistance value and pressure parameter are improved modulus of conversion by water temperature sensor and pressure sensor by signal isolation
Block is converted into the current and voltage signals parameter value that analog input card can identify, signal scale conversion module is for receiving analog input card
The data of collection carry out the communications protocol that change server can receive and are transmitted, and are such as transmitted using RS485 communications protocol.
Server includes database module and regular library module, the amount of being accurately controlled is exported after PID analytic operations, and pass through micro-control machine
Output board card output, adjust the output frequency of frequency converters at different levels, to control the rotating speed of refrigerating water pump motor, reach change it is cold
Freeze water flow and is allowed to the effect changed with load.
Water pump of central air conditioner energy conserving system further includes a low voltage complete set, including change-over switch and contactor, controls water
The motor of operating is pumped because of the in running order service life that can influence it for a long time, two motors is provided in the system and controls
Pump working can be switched between two motors by mortgaging complete set of equipments, make cycle operation between two motors, prolong
The service life of long motor.
Liquid crystal display is connected with server, for freezing temperature difference, output frequency, operation note, fault-signal
It is shown with alarm signal.If chilled water outlet temperature, chilled-water flow or chilled water occur abnormal for pressure of return water,
Alarm signal can be shown on liquid crystal display, and each operation and the failure of frequency converter can be collected by the second analog input card,
And in liquid crystal display screen display.
Server includes database module and regular library module, by taking central air-conditioning summer operation as an example, temperature sensor inspection
The return water temperature and chilled water leaving water temperature of chilled water are measured, the chilled water temperature difference is expressed as chilled water return water temperature and goes out with chilled water
The difference of coolant-temperature gage.The definite value and pressure P=0.1MPA that 4 to 5 jelly summer temperature difference are set in regular library module, freeze the summer temperature difference
Value is expressed as the difference of chilled water return water temperature and chilled water leaving water temperature.It is carried out by freezing temperature difference with summer temperature difference is frozen
The actual value of comparison, pressure sensor detection is compared with pressure P, according to certain operation rule, obtains different output
Frequency values reach change chilled-water flow and are allowed to change with load by the rotating speed of Frequency Converter Control refrigerating water pump motor
Effect.
Above example is only to illustrate the technological thought of the utility model, and the protection model of the utility model cannot be limited with this
Enclose, it is every according to the utility model proposes technological thought, any change is made on the basis of technical solution, each falls within this reality
With in novel protected range.
Claims (4)
1. a kind of water pump of central air conditioner energy conserving system, it is characterised in that：Including temperature sensor, pressure sensor, micro-control machine, become
Frequency device and motor, the micro-control machine include signal isolation conditioning conversion module, analog input card, signal scale conversion module, service
Device, output board card and liquid crystal display；The temperature sensor and pressure sensor by signal isolation improve conversion module with
Analog input card is connected, and the analog input card is connected by signal scale conversion module with server, and the server passes through output
Board is connected with the frequency converter；The frequency converter is connected with the motor, the working frequency for controlling motor；The liquid crystal
Display screen is connected with server, for showing analysis data.
2. water pump of central air conditioner energy conserving system as described in claim 1, it is characterised in that：Further include a low voltage complete set,
The low voltage complete set includes change-over switch and contactor, for the working condition between switch motor.
3. water pump of central air conditioner energy conserving system as described in claim 1, it is characterised in that：The server include database and
Rule base, the database root carry out big data analysis processing according to the operation rule of rule base.
4. water pump of central air conditioner energy conserving system as described in claim 1, it is characterised in that：The analog input card is adopted including first
Collect board and the second analog input card；First analog input card is for receiving temperature sensor and pressure sensor transmission information；
Transmission information of second analog input card for receiving frequency converter, including operation note, fault-signal and alarm signal, and
It is shown on liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721817926.5U CN207702671U (en) | 2017-12-22 | 2017-12-22 | A kind of water pump of central air conditioner energy conserving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721817926.5U CN207702671U (en) | 2017-12-22 | 2017-12-22 | A kind of water pump of central air conditioner energy conserving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207702671U true CN207702671U (en) | 2018-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721817926.5U Active CN207702671U (en) | 2017-12-22 | 2017-12-22 | A kind of water pump of central air conditioner energy conserving system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671769A (en) * | 2019-10-24 | 2020-01-10 | 浙江国祥股份有限公司 | Water-cooling integrated water cooler with variable-frequency hydraulic module and control method |
| CN112432307A (en) * | 2020-11-17 | 2021-03-02 | 珠海格力电器股份有限公司 | Water pump evaluation method and device, air conditioning system, storage medium and electronic equipment |
| CN113028619A (en) * | 2021-04-22 | 2021-06-25 | 武汉奇威特建安工程有限公司 | Variable-flow active energy-saving automatic control system of heating and ventilation air conditioning water system |
-
2017
- 2017-12-22 CN CN201721817926.5U patent/CN207702671U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671769A (en) * | 2019-10-24 | 2020-01-10 | 浙江国祥股份有限公司 | Water-cooling integrated water cooler with variable-frequency hydraulic module and control method |
| CN112432307A (en) * | 2020-11-17 | 2021-03-02 | 珠海格力电器股份有限公司 | Water pump evaluation method and device, air conditioning system, storage medium and electronic equipment |
| CN112432307B (en) * | 2020-11-17 | 2021-11-02 | 珠海格力电器股份有限公司 | Water pump evaluation method and device, air conditioning system, storage medium and electronic equipment |
| CN113028619A (en) * | 2021-04-22 | 2021-06-25 | 武汉奇威特建安工程有限公司 | Variable-flow active energy-saving automatic control system of heating and ventilation air conditioning water system |
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