CN204239302U - A kind of automatic speed governing device of water-loop heat pump cooling tower fan - Google Patents
A kind of automatic speed governing device of water-loop heat pump cooling tower fan Download PDFInfo
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- CN204239302U CN204239302U CN201420319311.XU CN201420319311U CN204239302U CN 204239302 U CN204239302 U CN 204239302U CN 201420319311 U CN201420319311 U CN 201420319311U CN 204239302 U CN204239302 U CN 204239302U
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- loop heat
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- 238000001816 cooling Methods 0.000 title claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 69
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000004378 air conditioning Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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Abstract
The utility model discloses a kind of automatic speed governing device of water-loop heat pump cooling tower fan, be arranged in water-loop heat pump system, it comprises the first temperature transducer, the second temperature transducer, control chip and frequency variator, first temperature transducer is arranged on water-loop heat pump cooling tower water inlet, second temperature transducer is arranged on the water outlet of water-loop heat pump cooling tower, control chip connects the first temperature transducer, the second temperature transducer and frequency variator, and frequency variator connects fan; Water inlet water temperature, output water temperature is detected respectively by the first temperature transducer, the second temperature transducer, control chip exports corresponding grade control signal according to the temperature approach of water inlet water temperature and output water temperature, and frequency variator is according to the rotating speed of described grade control signal correspondence adjustment fan; Automatically change the rotating speed of fan according to temperature approach, solve the problem of the energy waste that existing water-loop heat pump cooling tower fan power frequency operation causes, decrease electric energy loss, extend the working life of fan simultaneously.
Description
Technical field
The utility model relates to water-loop heat pump system field, particularly a kind of automatic speed governing device of water-loop heat pump cooling tower fan.
Background technique
Water-loop heat pump system is a kind of air-conditioning system of novel constant temperature and humidity, and it is applicable to high-grade office building, precision type instrument machine room, file administration room and network computer room etc.Water loop heat pump air conditioning system refers to a kind of application mode of small-sized water/air heat pump unit, namely by water loops, small-sized water/heat pump unit is connected in parallel, form a closed circuit, form the heat pump heating of a set of recovery interior of building waste heat as its low level heat energy, the air-conditioning system of cooling.
Existing water loop heat pump air conditioning system is made up of three parts: indoor miniature water/air heat pump unit, water circulation loop, supplementary equipment (as water-loop heat pump cooling tower).The working principle of water loop heat pump air conditioning system is: when water/air unit refrigeration, take water as heat extraction source.When the caloric receptivity of water loop heat pump air conditioning system heating operation is less than the thermal discharge of heating operation, coolant-temperature gage in circulation loop raises, water-loop heat pump cooling tower is utilized to release heat time to a certain extent, water by higher temperature flows into the water by outflow lower temperature after fan cooling cooling in water-loop heat pump cooling tower, returns in circulation loop.When the caloric receptivity of water/air heat pump unit heating operation is substantially equal with the thermal discharge of refrigerating operaton, the water in circulation loop maintains in certain temperature range, and now system high efficiency runs.Due to the power frequency operation (namely at the uniform velocity operating) always of the fan in existing water-loop heat pump cooling tower, if entering water temp (namely flowing into the water temperature of water-loop heat pump cooling tower) is larger with the temperature difference of water-exit temperature (flowing out the water temperature of water-loop heat pump cooling tower after namely cooling), fan need operate the long period could effective temperature-reducing, namely in high temperature difference situation, the running of fan power frequency causes cooling rate very slow, effectively can not keep constant difference, the normal operation of end unit cannot be ensured; If the temperature difference is very little, fan still at the uniform velocity running can cause energy loss, cause waste of energy; Meanwhile, because water loop heat pump air conditioning system need work long hours (as 24 hours uninterrupted).If fan is power frequency operation always, cannot stop to stop, will the working life of fan be greatly reduced.
Therefore be necessary to improve prior art.
Model utility content
In view of above-mentioned the deficiencies in the prior art part, the purpose of this utility model is the automatic speed governing device providing a kind of water-loop heat pump cooling tower fan, to solve the problem that existing water-loop heat pump cooling tower fan power frequency operation causes energy loss, fan reduction in working life.
In order to achieve the above object, the utility model takes following technological scheme:
An automatic speed governing device for water-loop heat pump cooling tower fan, is arranged in water-loop heat pump cooling tower, described water-loop heat pump cooling tower built-in fans, and it comprises:
For detecting the first temperature transducer of the water inlet water temperature flowing into water-loop heat pump cooling tower;
For detecting the second temperature transducer of the output water temperature flowing out water-loop heat pump cooling tower;
For exporting the control chip of corresponding grade control signal according to the temperature approach of water inlet water temperature and output water temperature;
For the frequency variator of the rotating speed according to described grade control signal correspondence adjustment fan;
Described first temperature transducer is arranged on water-loop heat pump cooling tower water inlet, second temperature transducer is arranged on 15% of the power frequency of water-loop heat pump cooling tower) water outlet, control chip connects the first temperature transducer, the second temperature transducer and frequency variator, and described frequency variator connects fan.
In described automatic speed governing device, described frequency variator and fan are respectively two, and a frequency variator connects a fan.
In described automatic speed governing device, the model of described control chip is S7-200.
Compared to prior art, the automatic speed governing device of a kind of water-loop heat pump cooling tower fan that the utility model provides, be arranged in water-loop heat pump cooling tower, comprise the first temperature transducer, the second temperature transducer, control chip and frequency variator, first temperature transducer is arranged on water-loop heat pump cooling tower water inlet, second temperature transducer is arranged on the water outlet of water-loop heat pump cooling tower, and control chip connects the first temperature transducer, the second temperature transducer and frequency variator, and frequency variator connects fan; Water inlet water temperature, output water temperature is detected respectively by the first temperature transducer, the second temperature transducer, control chip exports corresponding grade control signal according to the temperature approach of water inlet water temperature and output water temperature, and frequency variator is according to the rotating speed of described grade control signal correspondence adjustment fan; Automatically change the rotating speed of fan according to temperature approach, solve the problem of the energy waste that existing water-loop heat pump cooling tower fan power frequency operation causes, decrease electric energy loss, also extend the working life of fan.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the automatic speed governing device of the utility model water-loop heat pump cooling tower fan.
Fig. 2 is the structural representation of the automatic speed governing device of the utility model water-loop heat pump cooling tower fan.
Embodiment
The utility model provides a kind of automatic speed governing device of water-loop heat pump cooling tower fan, for making the purpose of this utility model, technological scheme and effect clearly, clearly, further describes the utility model referring to the accompanying drawing embodiment that develops simultaneously.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Please refer to Fig. 1 and Fig. 2, the automatic speed governing device of the water-loop heat pump cooling tower fan that the utility model provides is arranged in water-loop heat pump system cooling tower, described water-loop heat pump cooling tower built-in fans.Described automatic speed governing device comprises the first temperature transducer 10, second temperature transducer 20, control chip 30 and frequency variator 40.Described control chip 30 is arranged in the main control board of water-loop heat pump cooling tower, and its wired connection first temperature transducer 10, second temperature transducer 20 and frequency variator 40, described frequency variator 40 connects fan 50.Described first temperature transducer 10 is arranged on the water inlet of water-loop heat pump cooling tower, for detecting the water inlet water temperature flowing into water-loop heat pump cooling tower.Described second temperature transducer 20 is arranged on the water outlet of water-loop heat pump cooling tower, for detecting the output water temperature flowing out water-loop heat pump cooling tower.Described control chip 30 prestores multiple temperature grade, calculates after the temperature approach of water water temperature and output water temperature, judges which temperature grade is temperature approach belong to and export corresponding grade control signal to frequency variator.Frequency variator is variable-frequency motor, and itself and fan are fixed on the air duct place at water-loop heat pump system cooling tower top, and frequency variator is according to the rotating speed of this grade control signal correspondence adjustment fan.Wherein, the model of described control chip is S7-200.
It is to be appreciated that Fig. 2 is the structural representation of a preferred embodiment of the present embodiment automatic speed governing device.In the specific implementation, if carry out corresponding change to the profile of water-loop heat pump cooling tower, also can to the location-appropriate adjustment of the first temperature transducer, the second temperature transducer, frequency variator, fan with applicable different occasion, the present embodiment is not construed as limiting this.
In the present embodiment, rate range, grade control signal, rotation speed of the fan corresponding relation are as follows:
Temperature approach is less than 4 °, belongs to one-level temperature, and export one-level control signal, rotation speed of the fan is 0.Water temperature of now intaking and output water temperature gap not quite, can meeting the ambient operating temperatures of end unit, dispelling the heat without the need to using fan.
Temperature approach equals 5 °, belongs to secondary temperature, and export Two-stage control signal, rotation speed of the fan is: 15% of 15%(and power frequency).Water temperature of now intaking and output water temperature have certain gap, and fan can meet cooling requirement with existing converting operation fan for cooling;
Temperature approach equals 6 °, belongs to three grades of temperature, and export three class control signal, rotation speed of the fan is: 50% of 50%(and power frequency).Water temperature of now intaking and output water temperature gap are comparatively large, can improve the rotating speed of fan to accelerate pectinid cooling.
Temperature approach equals 8 °, belongs to level Four temperature, and export level Four control signal, rotation speed of the fan is: 100%.Water temperature of now intaking and output water temperature gap are comparatively large, and the rotating speed that can improve fan is that power frequency state is run, and accelerates pectinid cooling.
When fan described in the present embodiment is two, correspondence arranges two frequency variators, and its structure as shown in Figure 2.Then when temperature approach equals 9 °, belong to Pyatyi temperature, export Pyatyi control signal, the 2nd desk fan rotating speed is: 15%.Water temperature of now intaking and output water temperature gap are comparatively large, can increase the rotating speed of fan, utilize the 1st desk fan for the operation of power frequency state, and the 2nd desk fan is that converting operation is to accelerate pectinid cooling.
The like, multiple temperature grade scope can also be set in the specific implementation, each temperature value of temperature grade scope and the rotation speed of the fan of correspondence thereof be not construed as limiting herein.
In order to extend the working life of fan, the present embodiment also increases an elementary temperature in one-level temperature, namely when temperature approach is less than 4 °, export stop control signal, because now water inlet is substantially identical with water-exit temperature, can stopping fan rotation be made, reduce the wearing and tearing of fan electromotor, avoid fan continuous service to make its internal electronic device overheated, improve the Security of cooling.
In order to adjust radiating effect flexibly, when specifically implementing, described fan is multiple, then correspondence arranges multiple frequency variator.In each temperature grade, each fan can be made to run in turn, make each fan obtain the time of having a rest, when avoiding long, running makes fan overheated.Wherein several or all fans can also be made to run together, accelerate heat dissipation rate.
For two fans, when judging that temperature approach is less than 10 ° and is more than or equal to 6 °, when belonging to three grades of temperature, the following two kinds mode can be adopted:
1, in control chip, increase timer, control transducer drive fan with the speed pectinid preset heat radiation, start timer simultaneously.After timing reaches, control chip controls this frequency variator and closes, and this fan shuts down; Make another frequency variator start, timer starts again simultaneously, and this another fan of another transducer drive is with the speed pectinid preset heat radiation; During to avoid long, running makes that fan is overheated causes fan working life to reduce.After timing reaches, control chip controls this another frequency variator and closes, and another fan shuts down.Timer starts again, and control chip first transducer drive first fan is with the speed preset pectinid heat radiation again.Circulation like this, until temperature approach meets cooling require that (as being less than 2 °) can stop fan running.
Should be understood that, during above-mentioned two fan alternate-runnings, fan is all with the speed preset running (can be 15% or 50% of power frequency).In the specific implementation, temperature approach can also be detected in real time, export corresponding grade control signal according to concrete temperature approach during two fan alternate-runnings and change rotation speed of the fan to corresponding frequency variator, make rotation speed of the fan corresponding with concrete temperature approach.
2, control two fans simultaneously with the speed pectinid preset heat radiation, to accelerate rate of heat removal, shorten the time that fan runs.Like this when temperature drop to temperature approach be less than 1 ° time, can stopping fan rotation be made, reduce the wearing and tearing of fan electromotor.
Should be understood that, when above-mentioned two fans operate simultaneously, no matter how temperature approach changes, and rotation speed of the fan maintains fixed value, until just stop fan running when temperature approach is less than 1 °.In the specific implementation, also can detect temperature approach in real time, export corresponding grade control signal according to concrete temperature approach and change rotation speed of the fan to corresponding frequency variator, make two rotation speeds of the fan corresponding with concrete temperature approach.
In sum, the automatic speed governing device of a kind of water-loop heat pump cooling tower fan that the utility model provides, automatically can adjust rotation speed of the fan according to the temperature approach of entering water temp and water-exit temperature, accelerate fan running when temperature approach is larger, slow down when temperature approach is less fan running; To solve the problem of the energy waste that existing water-loop heat pump cooling tower fan power frequency operation causes, electric energy loss can also be decreased.Meanwhile, set up the fan of multiple frequency variator and correspondence thereof, between fan, alternate-running extends the working life of fan.
Be understandable that; for those of ordinary skills; can be equal to according to the technical solution of the utility model and model utility design thereof and replace or change, and all these change or replace the protection domain that all should belong to the claim appended by the utility model.
Claims (3)
1. an automatic speed governing device for water-loop heat pump cooling tower fan, is arranged in water-loop heat pump cooling tower, and described water-loop heat pump cooling tower built-in fans, is characterized in that, comprising:
For detecting the first temperature transducer of the water inlet water temperature flowing into water-loop heat pump cooling tower;
For detecting the second temperature transducer of the output water temperature flowing out water-loop heat pump cooling tower;
For exporting the control chip of corresponding grade control signal according to the temperature approach of water inlet water temperature and output water temperature;
For the frequency variator of the rotating speed according to described grade control signal correspondence adjustment fan;
Described first temperature transducer is arranged on water-loop heat pump cooling tower water inlet, second temperature transducer is arranged on the water outlet of water-loop heat pump cooling tower, control chip connects the first temperature transducer, the second temperature transducer and frequency variator, and described frequency variator connects fan.
2. automatic speed governing device according to claim 1, is characterized in that, described frequency variator and fan are respectively two, and a frequency variator connects a fan.
3. automatic speed governing device according to claim 1, is characterized in that, the model of described control chip is S7-200.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420319311.XU CN204239302U (en) | 2014-06-16 | 2014-06-16 | A kind of automatic speed governing device of water-loop heat pump cooling tower fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420319311.XU CN204239302U (en) | 2014-06-16 | 2014-06-16 | A kind of automatic speed governing device of water-loop heat pump cooling tower fan |
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| Publication Number | Publication Date |
|---|---|
| CN204239302U true CN204239302U (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420319311.XU Expired - Lifetime CN204239302U (en) | 2014-06-16 | 2014-06-16 | A kind of automatic speed governing device of water-loop heat pump cooling tower fan |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107860243A (en) * | 2016-09-21 | 2018-03-30 | 荏原冷热系统株式会社 | Heat exchanger |
| CN111381616A (en) * | 2018-12-28 | 2020-07-07 | 天津市威匡电气设备有限公司 | Automatic cooling control cabinet |
| CN115573936A (en) * | 2022-10-28 | 2023-01-06 | 江苏金碧田系统集成有限公司 | Frequency conversion control, energy saving and consumption reduction system and method for cooling tower fan |
-
2014
- 2014-06-16 CN CN201420319311.XU patent/CN204239302U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107860243A (en) * | 2016-09-21 | 2018-03-30 | 荏原冷热系统株式会社 | Heat exchanger |
| CN107860243B (en) * | 2016-09-21 | 2020-08-14 | 荏原冷热系统株式会社 | Heat exchanger |
| CN111381616A (en) * | 2018-12-28 | 2020-07-07 | 天津市威匡电气设备有限公司 | Automatic cooling control cabinet |
| CN115573936A (en) * | 2022-10-28 | 2023-01-06 | 江苏金碧田系统集成有限公司 | Frequency conversion control, energy saving and consumption reduction system and method for cooling tower fan |
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| Date | Code | Title | Description |
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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: 20150401 |