CN204787075U - Energy -saving control system for central air conditioner - Google Patents
Energy -saving control system for central air conditioner Download PDFInfo
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- CN204787075U CN204787075U CN201520421147.8U CN201520421147U CN204787075U CN 204787075 U CN204787075 U CN 204787075U CN 201520421147 U CN201520421147 U CN 201520421147U CN 204787075 U CN204787075 U CN 204787075U
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- variable frequency
- temperature controller
- temperature
- host computer
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Abstract
The utility model discloses an energy -saving control system for central air conditioner, including the host computer, a variable frequency speed governing(VFSG) switch board, the 2nd variable frequency speed governing(VFSG) switch board, the cooling pump, freezing pump, first temperature controller, the second temperature controller, a temperature sensor, the 2nd temperature sensor, air -cooler and heat dissipation water tower, the host computer links to each other with first temperature controller through a temperature sensor, a first temperature controller and a variable frequency speed governing(VFSG) switch board link to each other, a variable frequency speed governing(VFSG) switch board by freezing pump links to each other with the host computer, the host computer still links to each other with the second temperature controller through the 2nd temperature sensor, second temperature controller and the 2nd variable frequency speed governing(VFSG) switch board link to each other, the 2nd variable frequency speed governing(VFSG) switch board links to each other with the host computer through freezing pump, the host computer links to each other with a plurality of air -coolers, the air -cooler links to each other with freezing pump, the host computer links to each other with the cooling pump through the heat dissipation water tower. The utility model discloses can practice thrift the electric energy greatly, stable system has prolonged the life of equipment.
Description
Technical field
The utility model relates to air conditioner energy saving technical field, is specifically related to controlling system of central air conditioner.
Background technology
Central air conditioner system is very general in modern enterprise and living environment improvement, and is belong to necessary in certain this living environment or production process, i.e. so-called artificial environment, is not only the requirement of temperature, also has humidity, cleanliness factor etc.The space of the central air-conditioning that general major company uses be all closure, effect of natural ventilation is also bad, except festivals or holidays, general is all round-the-clock unlatching, due to during Design of Central Air Conditioning Systems must, load the hottest by weather maximum time design, and leave the design margin of about 10%-20%.Wherein freezing main frame can load or off-load according to load change thereupon, and chilled water pump and cooling water pump but can not make corresponding adjustment with load change.Like this, chilled water, cooling water system are almost long-term to be run under the state of large discharge, the little temperature difference, causes the significant wastage of energy.And freezing, cooling water pump adopts is all Y-△ start modes, the starting current of motor is 3-4 times of its rated current, and under so large rush of current, the service life of contactor declines greatly; Meanwhile, water hammer when mechanical shock during startup and termination of pumping, easily damages mechanical devices, bearing, valve and pipeline etc., thus increase maintenance load, maintenance cost, equipment are also easily aging.The cold carried due to freezing pump shaft in addition can not the change of system for tracking actual load, and the balance of its thermal drying can only by manually adjusting freezing main frame leaving water temperature, and the little temperature difference of large discharge is covered.Like this, not only waste energy, be also degrading the running environment of system, running quality.Particularly on the low side in environment temperature, when some end-equipment temperature control is slightly malfunctioning or sensitivity is not high, large area air-conditioning room temperature will be caused colder, do not feel like oneself, the running quality of severe jamming central air conditioner system.
In sum, need to improve existing air-conditioner control system.
Utility model content
For solving the problem, the utility model provides controlling system of central air conditioner, greatly can save electric energy, systems stabilisation, extends the service life of equipment.
For achieving the above object, the technical scheme that the utility model is taked is: controlling system of central air conditioner, comprise main frame, first variable frequency regulating speed control cabinet, second variable frequency regulating speed control cabinet, coolant pump, refrigerating water pump, first temperature controller, second temperature controller, first temperature sensor, second temperature sensor, air-cooler and cooling tower, main frame is connected with the first temperature controller by the first temperature sensor, first temperature controller is connected with the first variable frequency regulating speed control cabinet, first variable frequency regulating speed control cabinet is connected with main frame by coolant pump, main frame is also connected with the second temperature controller by the second temperature sensor, second temperature controller is connected with the second variable frequency regulating speed control cabinet, second variable frequency regulating speed control cabinet is connected with main frame by refrigerating water pump, main frame is connected with multiple air-cooler, air-cooler is connected with refrigerating water pump, main frame is connected with coolant pump by cooling tower.
It should be noted that the first described variable frequency regulating speed control cabinet, the second variable frequency regulating speed control cabinet is all connected with PCL controller.
The utility model has following beneficial effect: greatly can save electric energy, systems stabilisation, extends the service life of equipment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
In order to make the purpose of this utility model and advantage clearly understand, below in conjunction with embodiment, the utility model is further elaborated.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.
As shown in Figure 1, the utility model embodiment provides controlling system of central air conditioner, comprise main frame 1, first variable frequency regulating speed control cabinet 2, second variable frequency regulating speed control cabinet 3, coolant pump 4, refrigerating water pump 5, first temperature controller 6, second temperature controller 7, first temperature sensor 8, second temperature sensor 9, air-cooler 10 and cooling tower 11, main frame 1 is connected with the first temperature controller 6 by the first temperature sensor 8, first temperature controller 6 is connected with the first variable frequency regulating speed control cabinet 2, first variable frequency regulating speed control cabinet 2 is connected with main frame 1 by coolant pump 4, main frame 1 is also connected with the second temperature controller 7 by the second temperature sensor 9, second temperature controller 7 is connected with the second variable frequency regulating speed control cabinet 3, second variable frequency regulating speed control cabinet 3 is connected with main frame 1 by refrigerating water pump 5, main frame 1 is connected with multiple air-cooler 10, air-cooler 10 is connected with refrigerating water pump 5, main frame 1 is connected with coolant pump 4 by cooling tower 11.
It should be noted that the first described variable frequency regulating speed control cabinet 2, second variable frequency regulating speed control cabinet 3 is all connected with PCL controller.
The operation principle of this detailed description of the invention: the return water temperature of refrigerator and leaving water temperature are read in controller internal memory by temperature controller and temperature sensor by PLC, and calculate temperature approach; Then control the rotating speed of frequency converter according to the backwater of refrigerator and the temperature approach of water outlet, the flow of adjusting water outlet, control the speed of heat exchange; When the temperature difference is large, illustrate that indoor temperature height system loading is large, the rotating speed of refrigerating water pump should be improved, accelerate circulation rate and the flow of chilled water, accelerate the speed of heat exchange; Otherwise have a narrow range of temperature, then illustrate that indoor temperature is low, system loading is little, can reduce the rotating speed of refrigerating water pump, slows down circulation rate and the flow of chilled water, slows down the speed of heat exchange to save electric energy.
The heat exchange amount of the condenser of this detailed description of the invention takes cooling tower radiating and cooling to by cooling water, then deliver to condenser by coolant pump and carry out continuous circulation.Cooling water water inlet temperature difference of outlet water is large, and illustrate that refrigerator load is large, the heat needing cooling water to take away is large, should improve the rotating speed of coolant pump, strengthens the internal circulating load of cooling water; Have a narrow range of temperature, then illustrate, refrigerator load is little, and the heat that need take away is little, can reduce the rotating speed of coolant pump, reduces the internal circulating load of cooling water, to save electric energy.
The blower fan of cooling tower VFC of this detailed description of the invention: frequency control closed-loop control is carried out to blower fan of cooling tower by detecting cooling tower water temperature, make cooling tower water temperature constant in design temperature, effectively can save the electric energy excess loss of blower fan, best power savings can be reached.
This detailed description of the invention carries out frequency control closed-loop control by detecting cold-room temperature to the blower fan becoming blower fan group, realizes cold-room temperature constant at design temperature.Can reach desirable power savings after indoor fan group VFC, and air-conditioning effect is better.
The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (2)
1. controlling system of central air conditioner, it is characterized in that, comprise main frame (1), first variable frequency regulating speed control cabinet (2), second variable frequency regulating speed control cabinet (3), coolant pump (4), refrigerating water pump (5), first temperature controller (6), second temperature controller (7), first temperature sensor (8), second temperature sensor (9), air-cooler (10) and cooling tower (11), main frame (1) is connected with the first temperature controller (6) by the first temperature sensor (8), first temperature controller (6) is connected with the first variable frequency regulating speed control cabinet (2), first variable frequency regulating speed control cabinet (2) is connected with main frame (1) by coolant pump (4), main frame (1) is also connected with the second temperature controller (7) by the second temperature sensor (9), second temperature controller (7) is connected with the second variable frequency regulating speed control cabinet (3), second variable frequency regulating speed control cabinet (3) is connected with main frame (1) by refrigerating water pump (5), main frame (1) is connected with multiple air-cooler (10), air-cooler (10) is connected with refrigerating water pump (5), main frame (1) is connected with coolant pump (4) by cooling tower (11).
2. controlling system of central air conditioner according to claim 1, is characterized in that, the first described variable frequency regulating speed control cabinet (2), the second variable frequency regulating speed control cabinet (3) are all connected with PCL controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520421147.8U CN204787075U (en) | 2015-06-17 | 2015-06-17 | Energy -saving control system for central air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520421147.8U CN204787075U (en) | 2015-06-17 | 2015-06-17 | Energy -saving control system for central air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204787075U true CN204787075U (en) | 2015-11-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520421147.8U Expired - Fee Related CN204787075U (en) | 2015-06-17 | 2015-06-17 | Energy -saving control system for central air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204787075U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107166597A (en) * | 2017-06-30 | 2017-09-15 | 宁波钱创节能科技有限公司 | A kind of energy-saving air central |
-
2015
- 2015-06-17 CN CN201520421147.8U patent/CN204787075U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107166597A (en) * | 2017-06-30 | 2017-09-15 | 宁波钱创节能科技有限公司 | A kind of energy-saving air central |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20151118 Termination date: 20160617 |