CN204084678U - A kind of novel energy-conserving central air conditioner system - Google Patents

A kind of novel energy-conserving central air conditioner system Download PDF

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Publication number
CN204084678U
CN204084678U CN201420560394.1U CN201420560394U CN204084678U CN 204084678 U CN204084678 U CN 204084678U CN 201420560394 U CN201420560394 U CN 201420560394U CN 204084678 U CN204084678 U CN 204084678U
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CN
China
Prior art keywords
evaporimeter
rattler
butterfly valve
condenser
water
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Expired - Fee Related
Application number
CN201420560394.1U
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Chinese (zh)
Inventor
任德新
李志敏
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SICHUAN KBHG ENERGY TECHNOLOGY Co Ltd
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SICHUAN KBHG ENERGY TECHNOLOGY Co Ltd
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Priority to CN201420560394.1U priority Critical patent/CN204084678U/en
Application granted granted Critical
Publication of CN204084678U publication Critical patent/CN204084678U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses a kind of novel energy-conserving central air conditioner system, comprise evaporimeter, condenser and cooling tower, evaporimeter is with user, be all connected by water outlet, backwater two pipelines between condenser with cooling tower, the anti-rattler, butterfly valve, the temperature sensor that go out for being connected successively in water line between evaporimeter with user, butterfly valve, anti-rattler, Pressure gauge, water pump, anti-rattler, filter, butterfly valve, temperature sensor for being connected successively on the water return lines between evaporimeter with user; Water outlet between condenser with cooling tower, the attaching parts on water return pipeline are identical with between evaporimeter and user, the drive motors of evaporimeter, condenser adopts Frequency Converter Control, frequency converter is connected with PLC by D/A modular converter, and PLC is connected with each temperature sensor by A/D modular converter.The utility model is reasonable in design, complete function, and excellent performance is practical, and automatization level is high, is convenient to promote the use of.

Description

A kind of novel energy-conserving central air conditioner system
Technical field
The utility model relates to central air-conditioning energy control technology field, especially relates to a kind of novel energy-conserving central air conditioner system.
Background technology
China is the relatively poor country of a per capita energy, the half of world standard that per capita energy's occupancy volume is not enough, along with the fast development of China's economy, China has become the second in the world power consumption big country, but energy use efficiency is common on the low side, cause waste of energy phenomenon very serious.Although China's electrical network total installation of generating capacity and the quick dilatation of generated energy, but still be unable to catch up with the speed of power consumption increase, the situation is tense in power supply, and economizing on energy and electricity is extremely urgent.
Central air conditioner system is one of indispensable auxiliary facility of modern building, and the consumption of electric energy is very large, accounts for 50% of the total power consumption of building.Be all by maximum load due to central air conditioner system and increase certain surplus design, and in fact in 1 year, run and only have at most more than ten day under full load, even more than ten hour, almost most time load all runs below 70%.In usual central air conditioner system, the load of freezing main frame can with the automatic regulating load of temperature Change in season, and the refrigerating water pump matched with freezing main frame, coolant pump can not regulating loads automatically, to run under 100% load almost for a long time, cause the significant wastage of energy, be also degrading running environment and the running quality of central air-conditioning.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of novel energy-conserving central air conditioner system is provided, it forms temperature difference closed-loop automatic control by frequency converter, PLC, D/A converter module, thermal module and temperature sensor etc., automatically adjust the running frequency of water pump according to load weight, eliminate the factor of manual operation mistake; Owing to have employed the frequency control of temperature difference closed loop, improve the operating efficiency of freezing unit, improve automatization level.The utility model is reasonable in design, simple operation, complete function, and excellent performance is practical, and automatization level is high, and result of use is good, is convenient to promote the use of.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of novel energy-conserving central air conditioner system, it is characterized in that: comprise evaporimeter, condenser and cooling tower, described evaporimeter and user pass through water outlet, backwater two pipelines connect, described condenser and cooling tower also pass through water outlet, backwater two pipelines connect, described evaporimeter and the anti-rattler gone out for being connected successively in water line between user, butterfly valve, temperature sensor, described evaporimeter and the butterfly valve for being connected successively on the water return lines between user, anti-rattler, Pressure gauge, water pump, anti-rattler, filter, butterfly valve, temperature sensor, described filter output is connected with water tank by butterfly valve, described condenser and anti-rattler, temperature sensor and the butterfly valve for being connected successively on the outlet pipeline between cooling tower, described condenser and anti-rattler, temperature sensor, butterfly valve, anti-rattler, Pressure gauge, water pump, anti-rattler, filter, the butterfly valve for being connected successively on the water return pipeline between cooling tower, the drive motors of described evaporimeter, condenser adopts Frequency Converter Control, and described frequency converter is connected with PLC by D/A modular converter, and described PLC is connected with each temperature sensor described by A/D modular converter.
Above-mentioned a kind of novel energy-conserving central air conditioner system, is characterized in that: described PLC model is FX2N-64MR.
Above-mentioned a kind of novel energy-conserving central air conditioner system, is characterized in that: described frequency converter model is FR-F540-37K-CH.
Above-mentioned a kind of novel energy-conserving central air conditioner system, is characterized in that: described temperature sensor model is PT-100.
The utility model compared with prior art has the following advantages:
The utility model forms temperature difference closed-loop automatic control by frequency converter, PLC, D/A converter module, thermal module and temperature sensor etc., automatically adjusts the running frequency of water pump, eliminate the factor of manual operation mistake according to load weight; Owing to have employed the frequency control of temperature difference closed loop, improve the operating efficiency of freezing unit, improve automatization level.The utility model is reasonable in design, simple operation, complete function, and excellent performance is practical, and automatization level is high, and result of use is good, is convenient to promote the use of.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is central air conditioner system structural representation of the present utility model;
Fig. 2 is central air conditioner system control principle block diagram of the present utility model;
Fig. 3 is central air conditioner system PLC of the present utility model and frequency converter catenation principle figure.
Detailed description of the invention
As Fig. 1, shown in Fig. 2, a kind of novel energy-conserving central air conditioner system, it is characterized in that: comprise evaporimeter 1, condenser 2 and cooling tower 11, described evaporimeter 1 passes through water outlet with user 9, backwater two pipelines connect, described condenser 2 also passes through water outlet with cooling tower 11, backwater two pipelines connect, described evaporimeter 1 and the anti-rattler 3 gone out for being connected successively in water line between user 9, butterfly valve 4, temperature sensor 10, described evaporimeter 1 and the butterfly valve 4 for being connected successively on the water return lines between user 9, anti-rattler 3, Pressure gauge 5, water pump 6, anti-rattler 3, filter 7, butterfly valve 4, temperature sensor 10, described filter 7 output is connected with water tank 8 by butterfly valve 4, described condenser 2 and anti-rattler 3, temperature sensor 10 and the butterfly valve 4 for being connected successively on the outlet pipeline between cooling tower 11, described condenser 2 and anti-rattler 3, temperature sensor 10, butterfly valve 4, anti-rattler 3, Pressure gauge 5, water pump 6, anti-rattler 3, filter 7, the butterfly valve 4 for being connected successively on the water return pipeline between cooling tower 11, the drive motors of described evaporimeter 1, condenser 2 adopts Frequency Converter Control, and described frequency converter is connected with PLC by D/A modular converter, and described PLC is connected with each temperature sensor 10 described by A/D modular converter.
In the present embodiment, described PLC model is FX2N-64MR.
In the present embodiment, described frequency converter model is FR-F540-37K-CH, and power during its work is 37KW.
As shown in Figure 3, be PLC and frequency converter catenation principle figure, in the present embodiment, adopt a PLC to control four frequency converters, wherein two frequency converters are that refrigerating water pump controls frequency converter, and two frequency converters are that coolant pump controls frequency converter.
In the present embodiment, described temperature sensor 10 model is PT-100.
Systematical control principle is described as follows: in the chilled water circulatory system, under the effect of refrigerating water pump, chilled water flow is through freezing main frame, heat exchange is carried out at evaporimeter, terminal bay pipe blower or air-conditioning draught fan is sent to after absorbing and cooling temperature, after the heat absorbing air-conditioning room air through surface cooler heats up, then deliver to main frame evaporimeter by refrigerating water pump and form closed circulation.In cooling water recirculation system, under the effect of coolant pump, cooling water flow is through refrigerator, is sent to cooling tower, after fan cooling, delivers to main frame again by coolant pump, form circulation after condenser heat absorption heats up.In this process, chilled water, cooling water, as the carrier of energy transferring, obtain kinetic energy ceaselessly circulate in respective pipe-line system at refrigerating water pump, coolant pumps, constantly by the effect of the heat of indoor through refrigerator, discharged, as shown in Figure 1 by cooling tower.
The return water temperature of refrigerator and leaving water temperature are read in controller internal memory by thermal module 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; The temperature difference is large, illustrates that indoor temperature height system loading is large, should improve the rotating speed of refrigerating water pump, accelerates circulation rate and the flow of chilled water, accelerates 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.
Meanwhile, during due to freezing unit operation, the heat exchange amount of its condenser 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, improves 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 above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solutions of the utility model.

Claims (4)

1. a novel energy-conserving central air conditioner system, it is characterized in that: comprise evaporimeter (1), condenser (2) and cooling tower (11), described evaporimeter (1) and user (9) pass through water outlet, backwater two pipelines connect, described condenser (2) and cooling tower (11) also pass through water outlet, backwater two pipelines connect, the anti-rattler (3) gone out for being connected successively in water line between described evaporimeter (1) with user (9), butterfly valve (4), temperature sensor (10), butterfly valve (4) for being connected successively on water return lines between described evaporimeter (1) with user (9), anti-rattler (3), Pressure gauge (5), water pump (6), anti-rattler (3), filter (7), butterfly valve (4), temperature sensor (10), described filter (7) output is connected with water tank (8) by butterfly valve (4), anti-rattler (3), temperature sensor (10) and butterfly valve (4) for being connected successively on outlet pipeline between described condenser (2) with cooling tower (11), anti-rattler (3), temperature sensor (10), butterfly valve (4), anti-rattler (3), Pressure gauge (5), water pump (6), anti-rattler (3), filter (7), butterfly valve (4) for being connected successively on the water return pipeline between described condenser (2) with cooling tower (11), the drive motors of described evaporimeter (1), condenser (2) adopts Frequency Converter Control, described frequency converter is connected with PLC by D/A modular converter, and described PLC is connected with described each temperature sensor (10) by A/D modular converter.
2. according to a kind of novel energy-conserving central air conditioner system according to claim 1, it is characterized in that: described PLC model is FX2N-64MR.
3. according to a kind of novel energy-conserving central air conditioner system according to claim 2, it is characterized in that: described frequency converter model is FR-F540-37K-CH.
4., according to a kind of novel energy-conserving central air conditioner system according to claim 2, it is characterized in that:
Described temperature sensor (10) model is PT-100.
CN201420560394.1U 2014-09-25 2014-09-25 A kind of novel energy-conserving central air conditioner system Expired - Fee Related CN204084678U (en)

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CN201420560394.1U CN204084678U (en) 2014-09-25 2014-09-25 A kind of novel energy-conserving central air conditioner system

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Application Number Priority Date Filing Date Title
CN201420560394.1U CN204084678U (en) 2014-09-25 2014-09-25 A kind of novel energy-conserving central air conditioner system

Publications (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150107

Termination date: 20170925

CF01 Termination of patent right due to non-payment of annual fee