CN201474940U - Flow control device for cooling pump of ice water making machine - Google Patents
Flow control device for cooling pump of ice water making machine Download PDFInfo
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- CN201474940U CN201474940U CN2009201848987U CN200920184898U CN201474940U CN 201474940 U CN201474940 U CN 201474940U CN 2009201848987 U CN2009201848987 U CN 2009201848987U CN 200920184898 U CN200920184898 U CN 200920184898U CN 201474940 U CN201474940 U CN 201474940U
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- coolant pump
- temperature
- programmable controller
- control device
- flow control
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Abstract
The utility model discloses a flow control device for a cooling pump of an ice water making machine, which comprises temperature sensors arranged at a water inlet port and a water outlet port of a condenser respectively, a programmable controller electrically connected with output ends of the temperature sensors and a frequency converter electrically connected with an output end of the programmable controller. The frequency converter is in control connection with the cooling pump, the programmable controller conducts the temperature difference calculation according to temperature signals collected by the two temperature sensors and compares with a set temperature difference value to adjust the output frequency of the frequency converter, thereby controlling the flow rate of the cooling pump by controlling the rotation speed thereof and achieving the energy-saving purpose.
Description
Technical field
The utility model belongs to the industrial refrigeration field, relates in particular to industrial frozen water machine.
Background technique
Most industrial chiller plants are all finished by the frozen water machine at present, shown in Figure 1 is that frozen water machine structure realizes theory diagram, it mainly comprises vaporizer, condenser, coolant pump and cooling tower, its working principle is: after liquid refrigerant enters vaporizer, beginning to draw external heat evaporates, owing to constantly absorb extraneous heat, refrigeration agent becomes overheated refrigerant vapor, these refrigerant vapors enter compressor pressurizes again and become the high pressure, high temperature refrigerant steam, these overheated refrigerant vapors enter condenser, and take away its heat by cooling water by coolant pump, enter cooling tower and cool off, became cold liquid refrigerant, enter expansion valve then, these refrigeration agents are become refrigerant of low temperature by step-down, enter the vaporizer refrigeration again.At present the temperature difference of most of industrial frozen water machine is controlled to be 5 ℃, and the flow of frozen water machine coolant pump is that maximum load by the frozen water machine designs, because the frozen water machine often is not a maximum load when work, so the flow of cooling waterpump does not need maximum flow yet.But present industrial air-conditioning system all can't be adjusted the flow of frozen water machine coolant pump according to the load of frozen water machine, and in load hour, the flow of frozen water machine coolant pump but remains unchanged, thereby with consumed power, has brought bigger waste to industrial production.
The model utility content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art a kind of flow size that can regulate frozen water machine coolant pump is provided, thereby reaches the control gear of energy-conservation purpose.
For solving above technical problem, the utility model adopts following technological scheme: a kind of frozen water machine coolant pump flow control device, described frozen water machine comprises the condenser with water intake and water outlet, the coolant pump that is connected with the water outlet of described condenser, described coolant pump flow control device comprises the water intake that is separately positioned on condenser and the temperature transducer at water outlet place, the programmable controller that is electrically connected with each temperature transducer output terminal, the frequency variator that is electrically connected with described programmable controller output terminal, described frequency variator and coolant pump be control connection mutually, programmable controller carries out according to the temperature signal of two temperatures sensor acquisition that the temperature difference is calculated and compares regulating the output frequency of frequency variator with setting temperature approach, thereby the rotating speed of control coolant pump is with the flow size of control coolant pump.
Further, described programmable controller adopts the PID regulative mode.
Described programmable controller is embedded with temperature measurement module.
Because the enforcement of above technological scheme, the utility model compared with prior art has following advantage: the utility model is by the temperature sensor measurement that is arranged on condenser water intake and the water outlet place water temperature of intaking out, programmable controller calculates two place's water temperature temperature difference, and compare with the temperature approach of setting, thereby the frequency of output control signal control frequency variator is with the control of pump flow, if the actual temperature difference is less than setting temperature approach, then adjust the output frequency of frequency variator, make the flow of coolant pump reduce, thereby the power that consumes also will reduce, and reach purpose of energy saving.
Description of drawings
Accompanying drawing 1 is realized theory diagram for the utility model flow control device;
Accompanying drawing 2 is the utility model flow control device working principle flow chart;
Wherein: 1, condenser; 2, coolant pump; 3, programmable controller; 4, frequency variator;
Embodiment
Below in conjunction with accompanying drawing the utility model preferred embodiment is elaborated:
Frozen water machine flow control device as shown in Figure 1, the temperature transducer T1 that mainly comprises the water inlet of the condenser 1 that is arranged on the frozen water machine, be arranged on the temperature transducer T2 that the water outlet of condenser 1 goes out, programmable logic controller (PLC) PLC3 and frequency variator 4, the coolant pump 2 of the output terminal of frequency variator 4 and frozen water machine control connection mutually wherein, two temperatures sensor T1, the output terminal of T2 is connected with programmable controller 3 respectively, working principle as shown in Figure 2, in frozen water machine running, programmable controller 3 is gathered the temperature of the temperature transducer T2 output at the temperature transducer T1 of water inlet of condenser 1 and water outlet place respectively, and the two temperatures that receives is carried out the temperature difference calculate, the temperature difference that obtains and programmable controller 3 predefined temperature approach are carried out PID and are regulated, the frequency of output control signal control frequency variator, thereby the rotating speed of control coolant pump 2, the flow of regulating coolant pump 2 makes the frozen water machine turnover water temperature temperature difference maintain setting value, to reach purpose of energy saving.
Now flow control device of the present utility model is specifically described in conjunction with real process:
Existing frozen water machine is in when operation, and the temperature of cooling water control is 32 ℃ in a water into, 37 ℃ of water outlets, and 5 ℃ of the temperature difference, this design turnover water temperature are the turnover water temperatures at frozen water machine frozen water machine coolant pump full flow at full capacity the time.If the load of frozen water machine is not at full capacity, then during frozen water machine coolant pump full flow, the temperature difference of turnover water temperature will be less than 5 ℃, when after adopting flow control device of the present utility model on the frozen water machine, by two temperatures sensor measurement turnover water temperature, for making the frozen water machine turnover water temperature temperature difference maintain 5 ℃, PLC calculates the turnover water temperature temperature difference, carrying out PID regulates, thereby the frequency control coolant pump flow of output control signal control frequency variator, as when the temperature difference (3 ℃) that detects less than the temperature approach of setting, to reduce the rotating speed of coolant pump so, thereby make the flow of coolant pump reduce, the power of the corresponding consumption of coolant pump also will reduce like this, thereby reach purpose of energy saving.
Our hypothesis is an example with Trane RTHD165KW unit, joins the 22KW coolant pump, 1 year standard-sized sheet machine, and the total power consumption of coolant pump will reach 192720 degree so, close RMB121220 unit.And after this employing the utility model controlling schemes, to the frozen water machine not at full capacity the time, reduce coolant pump power to regulate, the load of average of the whole year frozen water machine is greatly about 50% so, the average power of coolant pump can be controlled in 11KW, thereby energy-conservation about 50%, promptly save half the electricity charge, have bigger application value.
The foregoing description only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the personage that is familiar with this art can understand content of the present utility model and is implemented; can not limit protection domain of the present utility model with this; all equivalences of doing according to spirit of the present utility model change or modify, and all should be encompassed in the protection domain of the present utility model.
Claims (2)
1. frozen water machine coolant pump flow control device, described frozen water machine comprises the condenser (1) with water intake and water outlet, the coolant pump (2) that is connected with the water outlet of described condenser (1), it is characterized in that: described coolant pump flow control device comprises the water intake that is separately positioned on condenser (1) and the temperature transducer (T1 at water outlet place, T2), with each temperature transducer (T1, T2) programmable controller (3) that is electrically connected of output terminal, with the frequency variator (4) that described programmable controller (3) output terminal is electrically connected, described frequency variator (4) and coolant pump (2) be control connection mutually.
2. frozen water machine coolant pump flow control device according to claim 1, it is characterized in that: described programmable controller (3) is embedded with temperature measurement module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201848987U CN201474940U (en) | 2009-05-04 | 2009-05-04 | Flow control device for cooling pump of ice water making machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201848987U CN201474940U (en) | 2009-05-04 | 2009-05-04 | Flow control device for cooling pump of ice water making machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201474940U true CN201474940U (en) | 2010-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201848987U Expired - Fee Related CN201474940U (en) | 2009-05-04 | 2009-05-04 | Flow control device for cooling pump of ice water making machine |
Country Status (1)
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| CN (1) | CN201474940U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103946648A (en) * | 2011-11-22 | 2014-07-23 | 富士通株式会社 | Suction-type heat pump system and suction-type heat pump driving method |
| CN104697388A (en) * | 2015-03-17 | 2015-06-10 | 芜湖凯博实业股份有限公司 | Energy-saving cooling tower control system and method |
| CN104713208A (en) * | 2015-02-13 | 2015-06-17 | 上海大众祥源动力供应有限公司 | Efficient centrifugal water cooling unit output energy saving adjusting system and method |
| CN105972784A (en) * | 2016-06-30 | 2016-09-28 | 上海大众祥源动力供应有限公司 | Temperature regulation system for cooling water for centrifugal unit and method |
| CN106163236A (en) * | 2016-08-08 | 2016-11-23 | 福建省汽车工业集团云度新能源汽车股份有限公司 | A kind of electric automobile cooling system and method |
| CN106352630A (en) * | 2016-08-31 | 2017-01-25 | 浪潮电子信息产业股份有限公司 | Control device and method and air-conditioning system |
| CN106347100A (en) * | 2016-09-29 | 2017-01-25 | 浙江吉利控股集团有限公司 | Cooling system for generator for stroke increasing hybrid vehicle |
| CN108176934A (en) * | 2016-08-23 | 2018-06-19 | 合肥国声电子通信有限责任公司 | A kind of control method of universal conversion integrating water route module |
| CN110762733A (en) * | 2019-10-30 | 2020-02-07 | 南京亚派软件技术有限公司 | Online frequency conversion control method and device for cooling pump of central air conditioner |
-
2009
- 2009-05-04 CN CN2009201848987U patent/CN201474940U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103946648A (en) * | 2011-11-22 | 2014-07-23 | 富士通株式会社 | Suction-type heat pump system and suction-type heat pump driving method |
| US20140250927A1 (en) * | 2011-11-22 | 2014-09-11 | Fujitsu Limited | Adsorption heat pump system and method of driving adsorption heat pump |
| CN103946648B (en) * | 2011-11-22 | 2016-03-02 | 富士通株式会社 | The driving method of adsorption type heat pump system and adsorption type heat pump |
| CN104713208A (en) * | 2015-02-13 | 2015-06-17 | 上海大众祥源动力供应有限公司 | Efficient centrifugal water cooling unit output energy saving adjusting system and method |
| CN104697388A (en) * | 2015-03-17 | 2015-06-10 | 芜湖凯博实业股份有限公司 | Energy-saving cooling tower control system and method |
| CN105972784A (en) * | 2016-06-30 | 2016-09-28 | 上海大众祥源动力供应有限公司 | Temperature regulation system for cooling water for centrifugal unit and method |
| CN106163236A (en) * | 2016-08-08 | 2016-11-23 | 福建省汽车工业集团云度新能源汽车股份有限公司 | A kind of electric automobile cooling system and method |
| CN108176934A (en) * | 2016-08-23 | 2018-06-19 | 合肥国声电子通信有限责任公司 | A kind of control method of universal conversion integrating water route module |
| CN108176934B (en) * | 2016-08-23 | 2019-11-12 | 合肥国声电子通信有限责任公司 | A kind of control method of universal conversion integrating water route module |
| CN106352630A (en) * | 2016-08-31 | 2017-01-25 | 浪潮电子信息产业股份有限公司 | Control device and method and air-conditioning system |
| CN106347100A (en) * | 2016-09-29 | 2017-01-25 | 浙江吉利控股集团有限公司 | Cooling system for generator for stroke increasing hybrid vehicle |
| CN110762733A (en) * | 2019-10-30 | 2020-02-07 | 南京亚派软件技术有限公司 | Online frequency conversion control method and device for cooling pump of central air conditioner |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20160504 |