CN203744478U - Energy-saving structure - Google Patents
Energy-saving structure Download PDFInfo
- Publication number
- CN203744478U CN203744478U CN201420109879.9U CN201420109879U CN203744478U CN 203744478 U CN203744478 U CN 203744478U CN 201420109879 U CN201420109879 U CN 201420109879U CN 203744478 U CN203744478 U CN 203744478U
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- China
- Prior art keywords
- pump
- energy
- freezing
- frequency converter
- cooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 238000007710 freezing Methods 0.000 claims abstract description 18
- 230000008014 freezing Effects 0.000 claims abstract description 18
- 239000002826 coolant Substances 0.000 claims description 16
- 238000004378 air conditioning Methods 0.000 claims description 8
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Air Conditioning Control Device (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The utility model discloses an energy-saving structure applied to the operation of central air-conditioner freezing and cooling circulating water pumps or industrial freezing and cooling circulating water pumps. The energy-saving structure comprises a first cooling pump and a first freezing pump. The energy-saving structure is characterized in that the first cooling pump is connected with a second cooling pump in parallel; the first freezing pump is connected with a second freezing pump in parallel; the first cooling pump is connected with an outgoing end of a first frequency converter; the second cooling pump is connected with an outgoing end of a second frequency converter; the first freezing pump is connected with an outgoing end of a third frequency converter; the second freezing pump is connected with an outgoing end of a fourth frequency converter; and incoming ends of the first, second, third and fourth frequency converters are connected with a power supply. According to the energy-saving structure, the flow is increased, the cooling effect is improved correspondingly, the temperature difference of outgoing water and return water is reduced, the load of a host is reduced, the phenomenon that a circulating water pump saves energy while the energy consumption of the host is increased is eliminated, and the real energy saving of a central air-conditioner system is realized.
Description
Technical field
The utility model relates to a kind of energy-saving structure, more particularly, relates to a kind of central air-conditioning freezing, cooling circulating water pump or industrial freezing, operating energy-saving structure of cooling circulating water pump of being applied to.
Background technology
The circulating pump method of operation is generally the using and the reserved or a use two is standby.At present, known central air-conditioning freezing, cooling circulating water pump reducing energy consumption pattern adopt temperature sensor, PID controller, variable-frequency governor to control, temperature sensor by being arranged on out, on water return pipeline by the water outlet detecting, return water temperature data feedback to PID controller, PID controller is analyzed, compare, is calculated output one tunnel and simulate 4-20mA electric current to frequency converter according to the going out of the going out of reality test, backwater temperature difference value and setting, backwater temperature difference value, and frequency converter is adjusted a wherein circulation-water pump electric machine rotating speed of output frequency control according to the size of current signal.
From Hydrodynamics Theory, the output flow Q of centrifugal fluid transmission equipment is directly proportional to its rotation speed n; Square being directly proportional of output pressure P (lift) and its rotation speed n; Power output N is directly proportional to the cube of its rotation speed n, and frequency Hz is directly proportional to rotating speed, known according to mathematical formulae, reduces the rotating speed of water circulating pump, and the power output of water circulating pump just can decline more.As the frequency of supply of motor is reduced to 20%, by 50Hz, reduce to 40Hz, the power output of low frequency 40Hz is (40/50) in theory
3=0.512, water circulating pump power saving rate can reach 48.8%, before flow-rate ratio transformation, flow reduces by 20%, current central air-conditioning freezing, the cool cycles water yield is to carry out proportioning according to the metered flow of air-conditioning nominal substantially, air-conditioner host is all automatic control substantially, main frame is according to coolant pump, freezing pumping, the temperature difference of backwater and discharge are adjusted output load automatically, after water circulating pump reduces frequency, circulating water flow per hour must reduce, return water temperature rises, the temperature difference increases main unit load and increases, exist the energy-conservation and main frame energy consumption of water circulating pump to increase, it is comprehensive that relatively air-conditioning system is not energy-conservation.
Summary of the invention
In order to overcome the defect in existing closed cooling circulating water pump energy saving in running technology, the utility model provides that a kind of not only energy-saving effect is better for closed cooling circulating water pump, and can not reduce water circulating pump flow and can not affect, return water temperature, can not increase the energy-saving structure of air-conditioner host energy consumption.
It is as described below that the utility model solves the technical scheme that its technical problem adopts: a kind of energy-saving structure, this energy-saving structure be applied to central air-conditioning freezing, cooling circulating water pump or industrial freezing, cooling circulating water pump is in service, comprise the first coolant pump and the first refrigerating water pump, it is characterized in that, described the first coolant pump is parallel with the second coolant pump; The first refrigerating water pump is parallel with the second refrigerating water pump, and described the first coolant pump is connected with the first frequency converter leading-out terminal; Described the second coolant pump is connected with the second frequency converter leading-out terminal; Described the first refrigerating water pump is connected with the 3rd frequency converter leading-out terminal; Described the second refrigerating water pump is connected with the 4th frequency converter leading-out terminal, and this first, second, third, fourth frequency converter end of incoming cables is all connected with power supply.
According to the utility model of said structure, its beneficial effect is, the utility model improves flow, the corresponding raising of cooling effect, goes out, backwater temperature difference reduces, and main unit load reduces, having eliminated the energy-conservation and main frame energy consumption of water circulating pump increases phenomenon, realizes central air conditioner system really energy-conservation.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and embodiment, the utility model is described further.
Fig. 1 is the utility model structural representation.
The specific embodiment
As shown in Figure 1, a kind of energy-saving structure, this energy-saving structure be applied to central air-conditioning freezing, cooling circulating water pump or industrial freezing, cooling circulating water pump is in service, comprises that the first coolant pump 3 and the first refrigerating water pump 7, the first coolant pumps 3 are parallel with the second coolant pump 4; The first refrigerating water pump 7 is parallel with the second refrigerating water pump 8, the first coolant pumps 3 and is connected with the first frequency converter 2 leading-out terminals; The second coolant pump 4 is connected with the second frequency converter 5 leading-out terminals; The first refrigerating water pump 7 is connected with the 3rd frequency converter 6 leading-out terminals; The second refrigerating water pump 8 is connected with the 4th frequency converter 9 leading-out terminals, and these first, second, third, fourth frequency converter, 2,5,6,9 ends of incoming cables are all connected with power supply.
The utility model is by every attached with frequency converters of the water circulating pump of the using and the reserved, temperature sensor 10 by being arranged on out, on water return pipeline by the water outlet detecting, return water temperature data feedback to PID controller 1, PID controller 1 according to the going out of the going out of reality test, backwater temperature difference value and setting, backwater temperature difference value is analyzed, compare, calculate synchronous output two-way simulates 4-20mA current signal to two frequency converters, frequency converter is adjusted output frequency controlled circulation pump motor rotating speed according to the size of current signal.
For preventing that energy saver from occurring that chance failure affects equipment and normally moves, this control device is provided with frequency conversion chance failure and is switched to civil power running status function,
From Hydrodynamics Theory, the output flow Q of centrifugal fluid transmission equipment is directly proportional to its rotation speed n; Square being directly proportional of output pressure P (lift) and its rotation speed n; Power output N is directly proportional to the cube of its rotation speed n, and frequency Hz is directly proportional to rotating speed, known according to mathematical formulae, reduces the rotating speed of water circulating pump, and the power output of water circulating pump is just 3 powers and declines.
The frequency of supply of two motors is reduced to 40%, by 50Hz, reduce to 30Hz, the power output of two water circulating pump low frequency 30Hz is 2* (30/50) in theory
3=0.432, water circulating pump power saving rate can reach 56.8%, and because output flow Q becomes with its rotation speed n, frequency Hz is directly proportional to rotating speed, flow 2* (30/50)=1.2, before flow-rate ratio transformation flow enhancement 20%, two water circulating pump be operated in 30H
zduring converting operation, economize on electricity 56.8% during than a power frequency operation, flow enhancement per hour 20%.
Claims (1)
1. an energy-saving structure, this energy-saving structure be applied to central air-conditioning freezing, cooling circulating water pump or industrial freezing, cooling circulating water pump is in service, comprise the first coolant pump and the first refrigerating water pump, it is characterized in that, described the first coolant pump is parallel with the second coolant pump; The first refrigerating water pump is parallel with the second refrigerating water pump, and the first coolant pump is connected with the first frequency converter leading-out terminal; The second coolant pump is connected with the second frequency converter leading-out terminal; The first refrigerating water pump is connected with the 3rd frequency converter leading-out terminal; The second refrigerating water pump is connected with the 4th frequency converter leading-out terminal, and this first, second, third, fourth frequency converter end of incoming cables is all connected with power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420109879.9U CN203744478U (en) | 2014-03-12 | 2014-03-12 | Energy-saving structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420109879.9U CN203744478U (en) | 2014-03-12 | 2014-03-12 | Energy-saving structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203744478U true CN203744478U (en) | 2014-07-30 |
Family
ID=51344269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420109879.9U Expired - Lifetime CN203744478U (en) | 2014-03-12 | 2014-03-12 | Energy-saving structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203744478U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106672470A (en) * | 2016-10-17 | 2017-05-17 | 广汉市思科信达科技有限公司 | Oil storage tank cooling system |
-
2014
- 2014-03-12 CN CN201420109879.9U patent/CN203744478U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106672470A (en) * | 2016-10-17 | 2017-05-17 | 广汉市思科信达科技有限公司 | Oil storage tank cooling system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |
|
| CX01 | Expiry of patent term |