CN203501386U - Frequency conversion driving system of central air conditioner - Google Patents
Frequency conversion driving system of central air conditioner Download PDFInfo
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- CN203501386U CN203501386U CN201320590790.4U CN201320590790U CN203501386U CN 203501386 U CN203501386 U CN 203501386U CN 201320590790 U CN201320590790 U CN 201320590790U CN 203501386 U CN203501386 U CN 203501386U
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- water pump
- frequency converter
- condenser
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Abstract
The utility model discloses a frequency conversion driving system of a central air conditioner. The frequency conversion driving system comprises an evaporator, a main machine of a condenser, a water tank, a blower fan water tower, a refrigeration water pump, a cooling water pump and a cooling water tower. The water tank is connected with a water inlet end of the evaporator. One end of the blower fan water tower is connected with the water inlet end of the evaporator, and the other end of the blower fan water tower is connected with the refrigeration water pump which is also connected with a water outlet end of the evaporator. One end of the cooling water pump is connected with a water outlet end of the condenser, and the other end of the cooling water pump is connected with a water inlet end of the condenser via the cooling water pump. The frequency conversion driving system further includes a first temperature sensor disposed at the water inlet end of the evaporator, a second temperature sensor disposed at the water outlet end of the evaporator, a third temperature sensor at the water inlet end of the condenser, a fourth temperature sensor at the water outlet end of the condenser, a first PID regulator, a second PID regulator, a first frequency converter and a second frequency converter. The frequency conversion driving system of a central air conditioner has the advantages of being energy-saving and highly efficient, etc.
Description
Technical field
The utility model relates to industrial control technology field, in particular, and particularly a kind of energy-saving central air-conditioning frequency changing driving system.
Background technology
The power consumption of pump motor in central air-conditioner accounts for the 30-40% of central air conditioner system total power consumption, by Application of frequency conversion technique in central air conditioner system, to promoting central air-conditioning automatization level, reduce energy consumption, reducing the aspects such as service life to the impact of electrical network, prolonged mechanical and pipe network, all have great importance.The backwater of each circulation of central air-conditioning and leaving water temperature poor, has reflected the heat exchange amount that whole system is carried out.Therefore, carrying out the flow of controlled circulation water according to the temperature difference of backwater and water outlet, thereby control the speed of heat exchange, is first-selected energy-saving control method.
Utility model content
The purpose of this utility model is to provide a kind of central air-conditioning frequency changing driving system, and it has energy-conservation, efficiency advantages of higher.
In order to solve problem set forth above, the technical solution adopted in the utility model is:
A kind of central air-conditioning frequency changing driving system, comprise the main frame that is provided with evaporimeter and condenser, and water tank, blower fan water tower, chilled water pump, cooling water pump and cooling tower, described water tank is connected with evaporimeter water inlet end, described blower fan water tower one end is connected with evaporimeter water inlet end, the other end is connected with chilled water pump, described chilled water pump is also connected with evaporimeter water side, described cooling water pump one end is connected with condenser water side, the other end is connected with condenser water inlet end through cooling tower, it also comprises the first temperature sensor and the second temperature sensor of being located at evaporimeter water inlet end and water side, be located at three-temperature sensor and the 4th temperature sensor of condenser water inlet end and water side, the PID adjuster being connected with the second temperature sensor with the first temperature sensor, the 2nd PID adjuster being connected with the 4th temperature sensor with three-temperature sensor, the first frequency converter that connects a described PID adjuster and chilled water pump, and the second frequency converter that connects described the 2nd PID adjuster and cooling water pump.
According to a preferred embodiment of the present utility model: a described PID adjuster is built in the first frequency converter, and described the 2nd PID adjuster is built in the second frequency converter.
According to a preferred embodiment of the present utility model: described the first frequency converter and the second frequency converter are vector frequency converter.
Compared with prior art, the beneficial effects of the utility model are: the utility model is respectively by delivery port, water inlet mounting temperature sensor at evaporimeter and condenser, and poor PID adjuster and the frequency converter given of feedback temperature, automatically to regulate the rotating speed of chilled water pump, cooling water pump, and then regulate the rate of heat exchange of each recirculated water, finally realize the control to constant indoor temperature degree.
Accompanying drawing explanation
Fig. 1. be the structural representation of central air-conditioning frequency changing driving system of the present utility model.
Fig. 2. be the wiring diagram of frequency converter in central air-conditioning frequency changing driving system of the present utility model.
Description of reference numerals: 1, main frame, 2, evaporimeter, 3, condenser, 4, water tank, 5, blower fan water tower, 6, chilled water pump, 7, the first frequency converter, the 8, first temperature sensor, the 9, second temperature sensor, 10, a PID adjuster, 11, three-temperature sensor, the 12, the 4th temperature sensor, 13, the 2nd PID adjuster, 14, the second frequency converter, 15, cooling water pump, 16, cooling tower.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Consult shown in Fig. 1, the utility model provides a kind of central air-conditioning frequency changing driving system, comprise the main frame 1 that is provided with evaporimeter 2 and condenser 3, and water tank 4, blower fan water tower 5, chilled water pump 6, cooling water pump 15 and cooling tower 16, water tank 4 is connected with evaporimeter 2 water inlet ends, blower fan water tower 5 one end are connected with evaporimeter 2 water inlet ends, the other end is connected with chilled water pump 6, chilled water pump 6 is also connected with evaporimeter 2 water sides, cooling water pump 15 one end are connected with condenser 3 water sides, the other end is connected with condenser 3 water inlet ends through cooling tower 16, the utility model also comprises the first temperature sensor 8 and the second temperature sensor 9 of being located at evaporimeter 2 water inlet ends and water side, be located at three-temperature sensor 11 and the 4th temperature sensor 12 of condenser 3 water inlet ends and water side, the PID adjuster 10 being connected with the second temperature sensor 9 with the first temperature sensor 8, the 2nd PID adjuster 13 being connected with the 4th temperature sensor 12 with three-temperature sensor 11, the first frequency converter 7 that connects a PID adjuster 10 and chilled water pump 6, and the second frequency converter 14 that connects the 2nd PID adjuster 13 and cooling water pump 15.
Operation principle of the present utility model is: the first temperature sensor 8 and the second temperature sensor 9 detect the temperature difference of evaporimeter 2 water inlet ends and water side in real time, three-temperature sensor 11 and the 4th temperature sensor 12 detect the temperature difference of condenser 3 water inlet ends and water side in real time, and temperature signal is fed back to a PID adjuster 10 and the 2nd PID adjuster 13 formation PID conditioning signals with analog signal (0-10V or 4-20ma), finally by the first frequency converter 7 and the second frequency converter 14, regulate the rotating speed of chilled water pump 6 and cooling water pump 15, thereby regulate the rate of heat exchange of each recirculated water, finally realize the control to constant indoor temperature degree.
In an embodiment, the first frequency converter 7 and the second frequency converter 14 are all selected the 8000B Series Frequency Converter of Guangzhou San Jing Electric Applicance Co., Ltd, and it is built in a PID adjuster 10 in the first frequency converter 7, and the 2nd PID adjuster 13 is built in the second frequency converter 14; And the first frequency converter 7 and the second frequency converter 14 are vector frequency converter; This Series Frequency Converter also has the following advantages:
1, simple to operation, plant maintenance amount is little, and applicability is strong;
2, due to built-in PID adjuster, can realize automatically and regulating according to indoor actual temperature, greatly improved environmental degree of comfort;
3, can realize thermostatic control and control, avoid the frequent start-stop of pump motor, power saving rate can reach 20-50%, and power savings is remarkable.
4, startup is level and smooth, little to electrical network and motor and water pump impact, has greatly extended the service life of water pump.
5, there is omnibearing defencive function, as: under-voltage, overcurrent, overload, overheated, phase shortage, short-circuit protection etc., effective guarantee the normal operation of system.
As shown in Figure 2, it is the first frequency converter 7 and the second frequency converter 14 and the wiring diagram of chilled water pump 6, cooling water pump 15.
Above-described embodiment is preferably embodiment of the utility model; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection domain of the present utility model.
Claims (3)
1. a central air-conditioning frequency changing driving system, comprise the main frame (1) that is provided with evaporimeter (2) and condenser (3), and water tank (4), blower fan water tower (5), chilled water pump (6), cooling water pump (15) and cooling tower (16), described water tank (4) is connected with evaporimeter (2) water inlet end, described blower fan water tower (5) one end is connected with evaporimeter (2) water inlet end, the other end is connected with chilled water pump (6), described chilled water pump (6) is also connected with evaporimeter (2) water side, described cooling water pump (15) one end is connected with condenser (3) water side, the other end is connected with condenser (3) water inlet end through cooling tower (16), it is characterized in that: also comprise the first temperature sensor (8) and the second temperature sensor (9) of being located at evaporimeter (2) water inlet end and water side, be located at three-temperature sensor (11) and the 4th temperature sensor (12) of condenser (3) water inlet end and water side, the PID adjuster (10) being connected with the second temperature sensor (9) with the first temperature sensor (8), the 2nd PID adjuster (13) being connected with the 4th temperature sensor (12) with three-temperature sensor (11), the first frequency converter (7) that connects a described PID adjuster (10) and chilled water pump (6), and the second frequency converter (14) that connects described the 2nd PID adjuster (13) and cooling water pump (15).
2. according to central air-conditioning frequency changing driving system claimed in claim 1, it is characterized in that: a described PID adjuster (10) is built in the first frequency converter (7), described the 2nd PID adjuster (13) is built in the second frequency converter (14).
3. according to central air-conditioning frequency changing driving system claimed in claim 1, it is characterized in that: described the first frequency converter (7) and the second frequency converter (14) are vector frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320590790.4U CN203501386U (en) | 2013-09-24 | 2013-09-24 | Frequency conversion driving system of central air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320590790.4U CN203501386U (en) | 2013-09-24 | 2013-09-24 | Frequency conversion driving system of central air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203501386U true CN203501386U (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320590790.4U Expired - Lifetime CN203501386U (en) | 2013-09-24 | 2013-09-24 | Frequency conversion driving system of central air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203501386U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107631523A (en) * | 2017-11-06 | 2018-01-26 | 中国水利水电第八工程局有限公司 | A kind of mass concrete cold feed device |
| CN113619765A (en) * | 2021-07-21 | 2021-11-09 | 上海外高桥造船有限公司 | Ventilation system at ship machinery place |
-
2013
- 2013-09-24 CN CN201320590790.4U patent/CN203501386U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107631523A (en) * | 2017-11-06 | 2018-01-26 | 中国水利水电第八工程局有限公司 | A kind of mass concrete cold feed device |
| CN107631523B (en) * | 2017-11-06 | 2023-06-06 | 中国水利水电第八工程局有限公司 | Large-volume concrete cold water supply device |
| CN113619765A (en) * | 2021-07-21 | 2021-11-09 | 上海外高桥造船有限公司 | Ventilation system at ship machinery place |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 510663 No. 17 Xiangshan Road, Science Town, Guangzhou hi tech Industrial Development Zone, Guangdong, China Patentee after: GUANGZHOU SANJING ELECTRIC Co.,Ltd. Address before: 510663 No. 17 Xiangshan Road, Science Town, Guangzhou hi tech Industrial Development Zone, Guangdong, China Patentee before: GUANGZHOU SANJING ELECTRIC Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140326 |