CN201416985Y - Central air-conditioning circulating pump power saving system - Google Patents
Central air-conditioning circulating pump power saving system Download PDFInfo
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- CN201416985Y CN201416985Y CN2009200253067U CN200920025306U CN201416985Y CN 201416985 Y CN201416985 Y CN 201416985Y CN 2009200253067 U CN2009200253067 U CN 2009200253067U CN 200920025306 U CN200920025306 U CN 200920025306U CN 201416985 Y CN201416985 Y CN 201416985Y
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- circulating pump
- central air
- conditioning
- water
- temperature
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Abstract
The utility model discloses a central air-conditioning circulating pump power saving system, which comprises a temperature detection device, return valves and electromagnetic valves, wherein the temperature detection device is arranged on an air outlet of a central air-conditioning system, the opening degree of the return valves are adjusted according to a display data of the temperature detectiondevice to keep the temperature of the air outlet not to change, and are arranged on a return tube of each fan coil. The electromagnetic valves are arranged on the front portions of the return valveswhich are arranged in the fan coils beside the two fan coils on the end, and are used to lead circulating water not to pass through the fan coils when an air conditioning is not used. The central air-conditioning circulating pump power saving system further comprises a pressure gage and an inverter, wherein the pressure gage is arranged on a water outlet pipe of a circulating pump, the inverter ismatched with the circulating pump, signals of pressure gage are transferred to the inverter, the inverter sends variable frequency signals to a power switch of the circulating pump to control the rotating speed of the circulating pump, thereby keeping the constant pressure difference of the water inlet pipes of the fan coils and the return pipes. The central air-conditioning circulating pump power saving system uses frequency conversion technology to adjust and control the rotating speed of the circulating pump to increase or reduce, thereby keeping the constant pressure difference of the water inlet pipes of the fan coils and the return pipes, and achieving the purpose of saving power. The structure is simple, the cost is low, and the mounting, the replacement and the maintenance are convenient.
Description
(1) technical field
The utility model relates to a kind of central air-conditioning electricity-saving system of circulating pump, belongs 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 utility model patent 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 problems to be solved in the utility model 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 utility model is realized 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.
Among the preferential embodiment of the utility model, 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.
Among the preferential embodiment of the utility model, described temperature-detecting device is a thermometer.
Operation principle of the present utility model:
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.
The beneficial effects of the utility model:
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 utility model 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 among the utility model embodiment.
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 utility model 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.
The utility model manufacture process 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 utility model has only been explained in above-mentioned explanation; the technology that the utility model is not mentioned 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 domain of the present utility model, protection domain of the present utility model 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 |
|---|---|---|---|
| CN2009200253067U CN201416985Y (en) | 2009-05-15 | 2009-05-15 | Central air-conditioning circulating pump power saving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200253067U CN201416985Y (en) | 2009-05-15 | 2009-05-15 | Central air-conditioning circulating pump power saving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201416985Y true CN201416985Y (en) | 2010-03-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200253067U Expired - Lifetime CN201416985Y (en) | 2009-05-15 | 2009-05-15 | Central air-conditioning circulating pump power saving system |
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| Country | Link |
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| CN (1) | CN201416985Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561173B (en) * | 2009-05-15 | 2010-09-08 | 魏占海 | Electricity-saving system of circulating pump in central air conditioner |
| CN102353124A (en) * | 2011-08-31 | 2012-02-15 | 广州市设计院 | Method for controlling heat-humidity ratio of air conditioning system and fixed heat-humidity ratio type surface cooler |
| US10215427B2 (en) | 2013-04-01 | 2019-02-26 | Carrier Corporation | Air conditioning system and method for controlling air conditioning system |
| CN115143613A (en) * | 2022-06-29 | 2022-10-04 | 广东美的制冷设备有限公司 | Control method of air source water machine, air source water machine system and operation control device |
-
2009
- 2009-05-15 CN CN2009200253067U patent/CN201416985Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561173B (en) * | 2009-05-15 | 2010-09-08 | 魏占海 | Electricity-saving system of circulating pump in central air conditioner |
| CN102353124A (en) * | 2011-08-31 | 2012-02-15 | 广州市设计院 | Method for controlling heat-humidity ratio of air conditioning system and fixed heat-humidity ratio type surface cooler |
| 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 |
| US10215427B2 (en) | 2013-04-01 | 2019-02-26 | Carrier Corporation | Air conditioning system and method for controlling air conditioning system |
| CN115143613A (en) * | 2022-06-29 | 2022-10-04 | 广东美的制冷设备有限公司 | Control method of air source water machine, air source water machine system and operation control device |
| CN115143613B (en) * | 2022-06-29 | 2024-04-09 | 广东美的制冷设备有限公司 | Control method of air source water machine, air source water machine system and operation control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100303 Effective date of abandoning: 20090515 |