CN101561173B - Electricity-saving system of circulating pump in central air conditioner - Google Patents
Electricity-saving system of circulating pump in central air conditioner Download PDFInfo
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- CN101561173B CN101561173B CN2009100152499A CN200910015249A CN101561173B CN 101561173 B CN101561173 B CN 101561173B CN 2009100152499 A CN2009100152499 A CN 2009100152499A CN 200910015249 A CN200910015249 A CN 200910015249A CN 101561173 B CN101561173 B CN 101561173B
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- circulating pump
- temperature
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Abstract
The invention discloses an electricity-saving system of a circulating pump in a central air conditioner, comprising a temperature-detecting device, a water return valve, a solenoid valve, a pressure gauge and a transducer; wherein, the temperature-detecting device is arranged at an air outlet of a central air-conditioning system; the water return valve is arranged on a return pipe of each fan coil; the opening of the water return valve is adjusted according to the data displayed on the temperature-detecting device so as to maintain the same temperature at the air outlet; the solenoid valve is arranged in the front of the water return valves in fan coils except two endmost fan coils and is used for ensuring that circulating water does not pass through fan coils when air conditioners are notused; the pressure gauge is arranged on an exhaust pipe of the circulating pump and the transducer is matched with the circulating pump; the pressure gauge transmits signals to the transducer; the tr ansducer sends variable frequency signals to a power switch of the circulating pump to control the rotating speed of the circulating pump so as to maintain constant pressure difference between an inlet pipe and the return pipe of the fan coil. The electricity-saving system adopts variable frequency technology to control rise or drop of the rotating speed of the circulating pump so as to maintain constant pressure difference between the inlet pipe and the return pipe of the fan coil to reach the aim of electricity saving. The electricity-saving system is simple in structure, low in cost and convenient in installation, replacement and maintenance.
Description
(1) technical field
The present invention relates to a kind of central air-conditioning electricity-saving system of circulating pump, belong to the central air-conditioning technical field.
(2) background technology
Central air conditioner system generally is applied to places such as office, school, hospital, market, hotel, hotel, factory and bank.
As the structural representation of Fig. 1 for existing central air-conditioning fan coil, be equipped with water intaking valve 4 on the water inlet pipe 6 of each fan coil, its return pipe 2 only is provided with back-water valve (BWV) 3 and back-water valve (BWV) 3 and is full open work and nonadjustable, thus when not using recirculated water still by fan coil 1.The recirculated water power that said structure design cycle pump is provided, generally satisfy each fan coil demand in order to reach, but generally overall supplies power is that supply exceed demand, make heat (cold) the discharge surplus of the subsystem and the single fan coil of its part, particularly under obsolete situation, the heat of its inside (cold) water is still flowing, form idle running, the electric weight of waste is surprising especially, this is because a part or small part make heat supply (cold) water whole system still in running at full capacity also using in the whole system.
In the unit of numerous use central air-conditioning, having (single) of part wouldn't usability and usability at random, temporary transient or obsolete fan coil of part-time with regard to these, cold water that it is inner or hot water are still in idle running, and the running of Air Conditioning Facilities circulating pump, can not therefore reduce operate power, waste a large amount of electric energy.
In order to overcome the shortcoming that water circulating pump idle running causes waste of energy, No. 200820000606 patent of invention of State Intellectual Property Office discloses a kind of economize on electricity automatic controller of center air-condition circle water device, comprise and contain the control module of controlling software module and coupled display screen, also be provided with the thermal module, the analog module that link to each other with control module; Thermal module is connected with that temperature A2 measures input port, temperature B2 measures input port, and afterwards both link to each other with the measurement thermocouple of the delivery port of the measurement thermocouple of the delivery port of chilled water, cooling water respectively; Analog module then connects pressure one and measures input, and pressure one is measured input and linked to each other with the pressometer of the delivery port of chilled water; Control module connects temperature difference A data output end, and temperature difference A data output end is connected with the temperature difference data input pin of chilled water pump control frequency converter.But the node automatic controller of said mechanism has adopted many control modules, complex structure, manufacturing processing cost height.
(3) summary of the invention
The technical problem to be solved in the present invention has provided a kind of central air-conditioning electricity-saving system of circulating pump, and it is using electricity wisely not only, and simple in structure, installation, replacing, easy to maintenance.
In order to solve the problems of the technologies described above, the present invention realizes by following measure:
A kind of central air-conditioning electricity-saving system of circulating pump comprises: temperature-detecting device is arranged on the air outlet of central air conditioner system; Back-water valve (BWV), to use draught temperature constant to adjust its aperture according to the temperature-detecting device video data, is arranged on each fan coil return pipe; Magnetic valve is arranged on the place ahead except back-water valve (BWV) in two fan coils of end, and recirculated water does not pass through fan coil when being used to make without air-conditioning; Also comprise Pressure gauge that is arranged on the circulating pump outlet pipe and the frequency converter that is complementary with circulating pump, the Pressure gauge signal sends frequency converter to, frequency converter sends the rotating speed that frequency variation signal is used to control circulating pump to the power switch of circulating pump, to keep fan coil water inlet pipe and return pipe pressure difference constant.
In the preferred embodiment of the invention, described Pressure gauge is the teletransmission Pressure gauge.
In order fully to save the energy, described magnetic valve is the pulse self-holding electromagnetic valve.
In the preferred embodiment of the invention, described temperature-detecting device is a thermometer.
Operation principle of the present invention:
After circulating pump is opened operation, adjust closing and the unlatching rate of fan coil by back-water valve (BWV) and magnetic valve, when closing of fan coil acquires a certain degree, the water outlet pressure of circulating pump is increased, Pressure gauge can transmit signal and give frequency converter, frequency converter reduces the speed of service of circulating pump by the power supply frequency conversion of control circulating pump, make it to keep the operating pressure of former setting, after motor speed reduces operation, its power consumption reduces, and uses how many quantity of circulating water, exports how much recirculated water, make it the operation of supplying water as required, to reach the purpose of economize on electricity.
Beneficial effect of the present invention:
1. utilization converter technique regulation and control circulating pump rotating speed improves or reduces, and to keep fan coil water inlet pipe and return pipe pressure difference constant, reaches purpose of saving;
2. all multimodes are not set, simple in structure, with low cost, installation, replacing, easy to maintenance.
(4) description of drawings
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 is the structural representation of existing central air-conditioning fan coil.
Fig. 2 is the structural representation of fan coil in the embodiment of the invention.
Fig. 3 is a circulating pump control system structural representation.
1 fan coil among the figure, 2 return pipes, 3 back-water valve (BWV)s, 4 water intaking valves, 5 magnetic valves, 6 water inlet pipes, the 7 backwater bag that catchments, 8 circulating pumps, 9 pressure of return water tables, 10 Pressure gauges, 11 small pumps, 12 condensation water tanks, 13 small pump frequency converters, 14 cold water frequency converters, 15 temperature sensors, 16 go out moisture water bag, 17 steam control valves, 18 frequency converters, 19 refrigeration machines or heat exchanger, 20 heat supply thermostats.
(5) specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail, following explanation only is exemplary.
A kind of as shown in Figure 2 central air-conditioning electricity-saving system of circulating pump comprises: temperature-detecting device is arranged on the air outlet of central air conditioner system; Back-water valve (BWV) 3, to use draught temperature constant to adjust its aperture according to the temperature-detecting device video data, is arranged on each fan coil 1 return pipe 2; Magnetic valve 5 is arranged on the place ahead except back-water valve (BWV) 3 in two fan coils 1 of end, and recirculated water is not by fan coil 1 when being used to make without air-conditioning; Also comprise Pressure gauge 10 that is arranged on circulating pump 8 outlet pipes and the frequency converter 18 that is complementary with circulating pump as shown in Figure 3, Pressure gauge 10 signals send frequency converter 18 to, frequency converter 18 sends the rotating speed that frequency variation signal is used to control circulating pump 8 to the power switch of circulating pump 8, to keep fan coil water inlet pipe and return pipe pressure difference constant.
Consider that the convenient described Pressure gauge of cost and installation, maintenance is the teletransmission Pressure gauge, described temperature-detecting device is a thermometer.
In order fully to save the energy, described magnetic valve is the pulse self-holding electromagnetic valve.
Manufacture process of the present invention is as follows:
1. at each fan coil 1 back-water valve (BWV) 3 pre-installed one satisfactory magnetic valve 5, for preventing freeze in winter, end in system should have 2 fan coils of not adorning magnetic valve, for magnetic valve 5 gauge taps easy to use and fan coil power switch can be located on the switch-board.
2. calculate the sectional area of total outlet pipe, calculate all fan coil 1 return pipe 2 total sectional areas, according to the aperture of calculating adjustment fan coil 1 back-water valve (BWV) 3, and actual test adjusted heating (giving cold) effect, meet instructions for use.
With reference to Fig. 3 in the control system of circulating pump, equipped frequency converter 18, control water outlet pressure is to reach the circulation requirement.
It is as follows that back-water valve (BWV) is adjusted the aperture process: back-water valve (BWV) 3 should be adjusted after data computation is adjusted once more,
1. hang a thermometer in the middle of fan coil 1 air outlet, blower fan runs up under the state, when measuring shown temperature-resistant of thermometer, writes down this temperature.
2. fan coil units power-on, make its machine that blows in promptly under the total system normal operating condition, close back-water valve (BWV) 3 gradually in high speed position, a suitable aperture, the temperature (air outlet) that makes it to keep air-conditioning to blow out wind is constant, in practical operation, should measure and with the record one to three ten minutes of Temperature numerical constant.
3. write down the switch degree of this valve, and finish numbering and mark, for maintenance next time is given instruction.
As shown in Figure 3 for better energy-conservation, in system, be provided with automatic temperature control system, automatic temperature control system comprises refrigeration machine or the heat exchanger 19 that links to each other with circulating pump 8 outlet pipes, temperature sensor 15 on pipeline between water outlet subpackage 15 and refrigeration machine or the heat exchanger 19, the cold water frequency converter 14 that is connected with refrigeration machine or heat exchanger 19, heat supply thermostat 20 that links to each other with temperature sensor 15 and steam control valve 17.Temperature sensor 15 induction links to each other with water outlet subpackage 16 after the temperature of pipeline during work, and signal is sent to the temperature of steam control valve 17, control cold water frequency converter 14 or heat supply thermostat 20, and is constant with maintenance cooling or heat supply temperature.
Basic principle of the present invention has only been explained in above-mentioned explanation; the technology that the present invention does not mention is a prior art; those skilled in the art can make many variations according to prompting; above-mentioned variation belongs to prior art; can not be used for limiting protection scope of the present invention, protection scope of the present invention is as the criterion with claim.
Claims (4)
1. central air-conditioning electricity-saving system of circulating pump is characterized in that comprising:
Temperature-detecting device is arranged on the air outlet of central air conditioner system;
Back-water valve (BWV), to use draught temperature constant to adjust its aperture according to the temperature-detecting device video data, is arranged on each fan coil return pipe;
Magnetic valve is arranged on the place ahead except back-water valve (BWV) in two fan coils of end, and recirculated water does not pass through fan coil when being used to make without air-conditioning;
Also comprise Pressure gauge that is arranged on the circulating pump outlet pipe and the frequency converter that is complementary with circulating pump, the Pressure gauge signal sends frequency converter to, frequency converter sends the rotating speed that frequency variation signal is used to control circulating pump to the power switch of circulating pump, to keep fan coil water inlet pipe and return pipe pressure difference constant.
2. according to the described central air-conditioning electricity-saving system of circulating pump of claim 1, it is characterized in that: described Pressure gauge is the teletransmission Pressure gauge.
3. according to claim 1 or 2 described central air-conditioning electricity-saving system of circulating pump, it is characterized in that: described magnetic valve is the pulse self-holding electromagnetic valve.
4. according to the described central air-conditioning electricity-saving system of circulating pump of claim 1, it is characterized in that: described temperature-detecting device is a thermometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100152499A CN101561173B (en) | 2009-05-15 | 2009-05-15 | Electricity-saving system of circulating pump in central air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100152499A CN101561173B (en) | 2009-05-15 | 2009-05-15 | Electricity-saving system of circulating pump in central air conditioner |
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| Publication Number | Publication Date |
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| CN101561173A CN101561173A (en) | 2009-10-21 |
| CN101561173B true CN101561173B (en) | 2010-09-08 |
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| CN2009100152499A Expired - Fee Related CN101561173B (en) | 2009-05-15 | 2009-05-15 | Electricity-saving system of circulating pump in central air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102353124B (en) * | 2011-08-31 | 2015-03-18 | 广州市设计院 | Method for controlling heat-humidity ratio of air conditioning system and fixed heat-humidity ratio type surface cooler |
| CN104089328B (en) | 2013-04-01 | 2018-10-12 | 开利公司 | Air-conditioning system and the method that air-conditioning system is controlled |
| DE212021000144U1 (en) * | 2021-07-14 | 2021-11-25 | Suzhou Sichengzhe Information Technology Co.,Ltd. | Atmospheric sampling devices with their own protective function |
| CN117469746A (en) * | 2023-12-27 | 2024-01-30 | 珠海格力电器股份有限公司 | Semiconductor fan and control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598425A (en) * | 2004-07-20 | 2005-03-23 | 贵州华城楼宇科技有限公司 | Cold / worming water energy-saving apparatus of central air conditioner |
| CN1629556A (en) * | 2003-12-19 | 2005-06-22 | 珠海福士得冷气工程有限公司 | Energy-saving central air conditioning system |
| CN2929552Y (en) * | 2006-07-18 | 2007-08-01 | 熊伟安 | Controller for central air conditioning system |
| CN101017021A (en) * | 2007-02-14 | 2007-08-15 | 广州金关节能科技发展有限公司 | Intelligent cluster control system of central air-conditioning |
| CN201416985Y (en) * | 2009-05-15 | 2010-03-03 | 魏占海 | Central air-conditioning circulating pump power saving system |
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- 2009-05-15 CN CN2009100152499A patent/CN101561173B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1629556A (en) * | 2003-12-19 | 2005-06-22 | 珠海福士得冷气工程有限公司 | Energy-saving central air conditioning system |
| CN1598425A (en) * | 2004-07-20 | 2005-03-23 | 贵州华城楼宇科技有限公司 | Cold / worming water energy-saving apparatus of central air conditioner |
| CN2929552Y (en) * | 2006-07-18 | 2007-08-01 | 熊伟安 | Controller for central air conditioning system |
| CN101017021A (en) * | 2007-02-14 | 2007-08-15 | 广州金关节能科技发展有限公司 | Intelligent cluster control system of central air-conditioning |
| CN201416985Y (en) * | 2009-05-15 | 2010-03-03 | 魏占海 | Central air-conditioning circulating pump power saving system |
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| CN101561173A (en) | 2009-10-21 |
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