CN203323318U - Variable flow energy-saving system for central air conditioner - Google Patents
Variable flow energy-saving system for central air conditioner Download PDFInfo
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- CN203323318U CN203323318U CN2013203754355U CN201320375435U CN203323318U CN 203323318 U CN203323318 U CN 203323318U CN 2013203754355 U CN2013203754355 U CN 2013203754355U CN 201320375435 U CN201320375435 U CN 201320375435U CN 203323318 U CN203323318 U CN 203323318U
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Abstract
The utility model discloses a variable flow energy-saving system for a central air conditioner, belonging to the technical field of energy conservation of the central air conditioner. The variable flow energy-saving system is characterized in that a central processing unit (CPU) computing center is connected with and monitors a cooling tower fan programmable logic controller (PLC) control module, a cooling-water machine PLC control module, a chilled water pump PLC control module and a cooling water pump PLC control module. The variable flow energy-saving system has the beneficial effects that all links of the air-conditioning system, comprising the CPU computing center, the chilled water pump PLC control module, the cooling water pump PLC control module, the cooling tower fan PLC control module and the cooling-water machine PLC control module, are comprehensively controlled, so that the whole system is operated in a coordinated mode; in the system design, all parts of the central air conditioner are comprehensively controlled, and all control subsystems are connected together physically, logically and functionally through the system integration technology; moreover, all operating indexes can be optimized, operations of all modules are tracked and controlled in real time, the operating parameters are automatically adjusted and perfected, and the optimal operating effect and energy-saving effect are achieved.
Description
Technical field
The utility model belongs to the central air-conditioning energy technical field, particularly a kind of central air-conditioning variable-flow energy conserving system.
Background technology
At present, domestic central air conditioner system, owing to there is no advanced technological means support, all adopt traditional constant flow control mode basically, and air-condition freezing (temperature) discharge, cooling water flow and cooling air air quantity are all constant.That is to say, as long as start air-conditioner host, chilled water pump, cooling water pump and blower fan of cooling tower all move under 50Hz power frequency state.
The feature of constant flow control mode is that the quantity of circulating water of system keeps definite value constant, when load variations, by change, supplies water or return water temperature mates.The advantage of constant flow way of supplying water is that system is simple, does not need complicated automatic control equipment.But there are some problems in this control mode, no matter how the end payload changes, and air-conditioning system is all at the operation at rating of design, and system energy consumption is the maximum in design all the time, and energy waste is very large; Central air conditioner system is the complication system of many reference amounts, non-linear, time variation, frequent fluctuation due to the end load, must cause the operation parameters of systemic circulation solution to depart from the optimum Working of air-conditioner host, cause the main frame thermal conversion efficiency to reduce, system is moved for a long time under inefficient state, also can increase the energy resource consumption of system; Start and stop high powered water pump under the power frequency state, dash current is large, is unfavorable for the safe operation of electrical network, and the electromechanical equipment such as water pump high-speed cruising under the power frequency rated condition for a long time, and mechanical wear is serious, causes equipment fault to increase and the shortening in service life.
In order to ensure the air-conditioning effect of central air-conditioning under summer and winter extreme weather conditions, the redundancy of Air-conditioner design capacity is essential, indispensable; The variation of end service condition is very normal, inevitable, and constant is unpractical; The key of problem is that central air-conditioning lacks advanced control mode, if cold (heat) of central air-conditioning amount supply, can realize needing according to end the number and automatically regulate, so, no matter the Air-conditioner design surplus how, no matter also how air conditioner load changes, can energy-producingly not waste.
The utility model content
Technical problem to be solved in the utility model is by the dynamic monitoring to central air conditioner energy source operational system and closed-loop control, change air-conditioner host into the variable-flow operation by the constant flow operation, realize the air-conditioner host cold medium flux to follow the end workload demand and synchronous the variation, under any loading condiction of air-conditioning system, can both guarantee the comfortableness of central air conditioner system, realize the energy-conservation of maximum simultaneously.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is a kind of central air-conditioning variable-flow energy conserving system, comprise CPU computing center, blower fan of cooling tower PLC control module, cooling-water machine PLC control module, chilled water pump PLC control module and cooling water pump PLC control module, it is characterized in that CPU computing center connects and monitors blower fan of cooling tower PLC control module, cooling-water machine PLC control module, chilled water pump PLC control module and cooling water pump PLC control module.
Described CPU computing center also connects and monitors analog input module and analog output module.
Described blower fan of cooling tower PLC control module connects and monitors blower fan of cooling tower frequency converter, blower fan of cooling tower and cooling tower water temperature sensor.
Described cooling-water machine PLC control module connects and monitors cooling-water machine frequency converter and cooling-water machine.
Described chilled water pump PLC control module connects and monitors chilled water pump frequency converter, chilled water pump and chilled water pump intake-outlet temperature and differential pressure pickup.
Described cooling water pump PLC control module connects and monitors cooling water pump frequency converter, cooling water pump and cooling water pump intake-outlet temperature and differential pressure pickup.
The beneficial effects of the utility model are the links to air-conditioning system, comprise that CPU computing center, chilled water pump PLC control module, cooling water pump PLC control module, blower fan of cooling tower PLC control module and cooling-water machine PLC control module control comprehensively, make the total system coordinated operation, realize best synthesis energy saving; In system, not only the central air-conditioning each several part is controlled comprehensively, and by system integration technology by each RACS physically, be interconnected in logic with on function; Make each operating index can reach optimization, the operation of each module of real-Time Tracking Control, adjust and the perfect operation parameter automatically, reaches optimal running effect and energy-saving effect.
The accompanying drawing explanation
Fig. 1 is system syndeton block diagram of the present utility model.
In figure: 1.CPU computing center, 2. analog input module, 3. analog output module, 4. blower fan of cooling tower PLC control module, 41. blower fan of cooling tower frequency converter, 42. blower fan of cooling tower, 43. cooling tower water temperature sensor, 5. cooling-water machine PLC control module, 51. cooling-water machine frequency converter, 52. cooling-water machine, 6. chilled water pump PLC control module, 61. chilled water pump frequency converter, 62. chilled water pump, 63. chilled water pump intake-outlet temperature and differential pressure pickup, 7. cooling water pump PLC control module, 71. cooling water pump frequency converter, 72. cooling water pump, 73. cooling water pump intake-outlet temperature and differential pressure pickup.
The specific embodiment
Below in conjunction with embodiment, the utility model is described in further detail.
As shown in the figure, adopt CPU computing center 1 to connect existing central air-conditioning energy operational system and monitor blower fan of cooling tower PLC control module 4, cooling-water machine PLC control module 5, chilled water pump PLC control module 6 and cooling water pump PLC control module 7; CPU computing center 1 is also connected and monitor analog input module 2 and analog output module 3; Blower fan of cooling tower PLC control module 4 is connected and monitor blower fan of cooling tower frequency converter 41, blower fan of cooling tower 42 and cooling tower water temperature sensor 43; Cooling-water machine PLC control module 5 is connected and monitor cooling-water machine frequency converter 51 and cooling-water machine 52; Chilled water pump PLC control module 6 is connected and monitor chilled water pump frequency converter 61, chilled water pump 62 and chilled water pump intake-outlet temperature and differential pressure pickup 63; Cooling water pump PLC control module 7 is connected and monitor cooling water pump frequency converter 71, cooling water pump 72 and cooling water pump intake-outlet temperature and differential pressure pickup 73; Made the utility model central air-conditioning variable-flow energy conserving system.
During use, blower fan of cooling tower PLC control module 4 gathers the signal of cooling tower water temperature sensor 43, chilled water pump PLC control module 6 gathers the signal of chilled water pump intake-outlet temperature and differential pressure pickup 63, cooling water pump PLC control module 7 gathers the signal of cooling water pump intake-outlet temperature and differential pressure pickup 73, and be transferred to CPU computing center 1 after respectively signal being arranged, provide instruction after comprehensive each signal of computing in CPU computing center 1, and control in real time blower fan of cooling tower frequency converter 41 and blower fan of cooling tower 42 by blower fan of cooling tower PLC control module 4, control in real time cooling-water machine frequency converter 51 and cooling-water machine 52 by cooling-water machine PLC control module 5, control in real time chilled water pump frequency converter 61 and chilled water pump 62 by chilled water pump PLC control module 6, control in real time cooling water pump frequency converter 71 and cooling water pump 72 by cooling water pump PLC control module 7, so just by CPU computing center, the links each several part of air-conditioning system is controlled comprehensively, make each operating index can reach optimization, the operation of each module of real-Time Tracking Control, adjust and the perfect operation parameter automatically, reaches optimal running effect and energy-saving effect.
Claims (1)
1. central air-conditioning variable-flow energy conserving system, comprise CPU computing center (1), blower fan of cooling tower PLC control module (4), cooling-water machine PLC control module (5), chilled water pump PLC control module (6) and cooling water pump PLC control module (7), it is characterized in that CPU computing center (1) connects and monitors blower fan of cooling tower PLC control module (4), cooling-water machine PLC control module (5), chilled water pump PLC control module (6) and cooling water pump PLC control module (7);
Described CPU computing center (1) also connects and monitors analog input module (2) and analog output module (3);
Described blower fan of cooling tower PLC control module (4) connects and monitors blower fan of cooling tower frequency converter (41), blower fan of cooling tower (42) and cooling tower water temperature sensor (43);
Described cooling-water machine PLC control module (5) connects and monitors cooling-water machine frequency converter (51) and cooling-water machine (52);
Described chilled water pump PLC control module (6) connects and monitors chilled water pump frequency converter (61), chilled water pump (62) and chilled water pump intake-outlet temperature and differential pressure pickup (63);
Described cooling water pump PLC control module (7) connects and monitors cooling water pump frequency converter (71), cooling water pump (72) and cooling water pump intake-outlet temperature and differential pressure pickup (73).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203754355U CN203323318U (en) | 2013-06-27 | 2013-06-27 | Variable flow energy-saving system for central air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203754355U CN203323318U (en) | 2013-06-27 | 2013-06-27 | Variable flow energy-saving system for central air conditioner |
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| Publication Number | Publication Date |
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| CN203323318U true CN203323318U (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203754355U Expired - Fee Related CN203323318U (en) | 2013-06-27 | 2013-06-27 | Variable flow energy-saving system for central air conditioner |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994553A (en) * | 2014-05-30 | 2014-08-20 | 厦门立思科技股份有限公司 | Refrigerating system cooling water energy-saving control method, system and device |
| CN104406276A (en) * | 2014-12-12 | 2015-03-11 | 常熟市兴华机电设备安装工程有限责任公司 | Intelligent control system of central air conditioner |
| CN106369772A (en) * | 2016-11-07 | 2017-02-01 | 深圳市奥宇节能技术股份有限公司 | Safety protection method for variable-flow operation of central air conditioner cooling water system |
| CN109990435A (en) * | 2017-12-31 | 2019-07-09 | ***通信集团四川有限公司 | Control method, device, equipment and the medium of air conditioner in machine room |
-
2013
- 2013-06-27 CN CN2013203754355U patent/CN203323318U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994553A (en) * | 2014-05-30 | 2014-08-20 | 厦门立思科技股份有限公司 | Refrigerating system cooling water energy-saving control method, system and device |
| CN103994553B (en) * | 2014-05-30 | 2017-03-08 | 厦门立思科技股份有限公司 | A kind of refrigeration system cooling water energy-saving control method, system and device |
| CN104406276A (en) * | 2014-12-12 | 2015-03-11 | 常熟市兴华机电设备安装工程有限责任公司 | Intelligent control system of central air conditioner |
| CN106369772A (en) * | 2016-11-07 | 2017-02-01 | 深圳市奥宇节能技术股份有限公司 | Safety protection method for variable-flow operation of central air conditioner cooling water system |
| CN106369772B (en) * | 2016-11-07 | 2019-06-18 | 深圳市奥宇节能技术股份有限公司 | A kind of method for security protection of central air conditioning cooling water system variable-flow operation |
| CN109990435A (en) * | 2017-12-31 | 2019-07-09 | ***通信集团四川有限公司 | Control method, device, equipment and the medium of air conditioner in machine room |
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| 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 |
Granted publication date: 20131204 Termination date: 20140627 |
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| EXPY | Termination of patent right or utility model |