CN210461139U - Low-temperature environment air conditioner refrigeration condensation fan control system - Google Patents
Low-temperature environment air conditioner refrigeration condensation fan control system Download PDFInfo
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- CN210461139U CN210461139U CN201921293723.XU CN201921293723U CN210461139U CN 210461139 U CN210461139 U CN 210461139U CN 201921293723 U CN201921293723 U CN 201921293723U CN 210461139 U CN210461139 U CN 210461139U
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- alternating current
- current contactor
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Abstract
The utility model discloses a low temperature environment air conditioner refrigeration condensation fan control system, which comprises a controller mainboard AP1, three AC contactors, three overload relays and a pressure controller PH, wherein one ends of normally open contacts of the three AC contactors are connected with a live wire, the other ends of the normally open contacts of the three AC contactors are connected with one ends of coils of the three overload relays, and the other ends of the coils of the three overload relays are connected with a compressor MC, a condensation fan MF and a water pump MP; the controller main board AP1 is provided with two voltage output ends which are respectively connected with one ends of normally closed contacts in two overload relays, the controller main board AP1 is also provided with a voltage output end which is connected with one end of a normally closed contact in a third overload relay, and the other end of the normally closed contact in the three overload relays is connected with one ends of coils of three alternating current contactors; the other ends of the three alternating current contactor coils are connected with a zero line access end of a controller mainboard AP1 together and then connected with a zero line.
Description
Technical Field
The utility model relates to an air conditioner refrigerating system controlling means field specifically is a low temperature environment air conditioner refrigeration condensation fan control system.
Background
In the field of industrial refrigeration, circulating low-temperature cooling water is often needed to dissipate heat of equipment, and a common method is to prepare certain low-temperature cooling water by using an air-cooled air conditioner water chilling unit, circulate the cooling water in load equipment through a circulating water pump, exchange heat generated by the equipment and keep the temperature of working equipment within a normal range.
In the equipment operation process, along with the change of ambient temperature, the condensation temperature of the air-cooled air-conditioning water chilling unit is constantly reduced, the condensation pressure of the system is in direct proportion to the temperature, the reduction of the condensation pressure can lead to the reduction of the evaporation pressure of the system, the return air pressure is protected, the return oil of the system is not smooth, and the system can not work normally. In practical engineering, the condition of low-pressure protection of the air-cooled air-conditioning water chilling unit is often met.
The utility model aims at providing a low temperature environment air conditioner refrigeration condensation fan control system to solve the problem that prior art air-cooled air conditioner refrigerating system can not normally work under the evaporation low pressure condition.
In order to achieve the above purpose, the utility model discloses the technical scheme who adopts is:
the utility model provides a low temperature environment air conditioner refrigeration condensation fan control system which characterized in that: the device comprises a controller main board AP1, an alternating current contactor KM1, an alternating current contactor KM2, an alternating current contactor KM3, an overload relay FR1, an overload relay FR2, an overload relay FR3 and a pressure controller PH, wherein:
one ends of respective normally open contacts of an alternating current contactor KM1, an alternating current contactor KM2 and an alternating current contactor KM3 are respectively connected with a live wire, the other ends of the respective normally open contacts of the alternating current contactor KM1, the alternating current contactor KM2 and the alternating current contactor KM3 are connected with one end of respective coils of an overload relay FR1, an overload relay FR2 and an overload relay FR3 in a one-to-one correspondence mode, and the other ends of the respective coils of the overload relay FR1, the overload relay FR2 and the overload relay FR3 are connected with power ends of a compressor MC, a condensation fan MF and a water;
one voltage output end in the controller mainboard AP1 is connected with one end of a normally closed contact in the overload relay FR1, and the other end of the normally closed contact in the overload relay FR1 is connected with one end of a coil of the alternating current contactor KM 1;
the other voltage output end of the controller mainboard AP1 is connected with one end of a relay electrical contact of a pressure controller PH, a pressure detection element of the pressure controller PH is communicated with a fluorine-filled pipeline bypass in an air-conditioning refrigeration system, the other end of the relay electrical contact of the pressure controller PH is connected with one end of a normally closed contact of an overload relay FR2, and the other end of the normally closed contact of the overload relay FR2 is connected with one end of a coil of an alternating current contactor KM 2;
a third voltage output end in the controller mainboard AP1 is connected with one end of a normally closed contact in the overload relay FR3, and the other end of the normally closed contact in the overload relay FR3 is connected with one end of a coil of the alternating current contactor KM 3;
the other ends of the coils of the alternating current contactor KM1, the alternating current contactor KM2 and the alternating current contactor KM3 are connected with the zero line access end of the controller main board AP1 in common and then connected with the zero line.
A low temperature environment air conditioner refrigeration condensation fan control system, its characterized in that: the model of the controller mainboard AP1 is DF2FS-TS7C, and the live wire access end of the controller mainboard AP1 is connected with a live wire.
A low temperature environment air conditioner refrigeration condensation fan control system, its characterized in that: the controller main board AP1 is also connected to an operation board AP 2.
A low temperature environment air conditioner refrigeration condensation fan control system, its characterized in that: the alternating current contactor KM1 is LC1-D2510N M7, the alternating current contactor KM2 is LC1-D0910N M7, and the alternating current contactor KM3 is LC1-D1210N M7.
A low temperature environment air conditioner refrigeration condensation fan control system, its characterized in that: the model of the overload relay FR1 is LRD-16C, the model of the overload relay FR2 is LRD-07C, and the model of the overload relay FR3 is LRD-10C.
A low temperature environment air conditioner refrigeration condensation fan control system, its characterized in that: the pressure controller PH is of the type RF 880.
Compared with the prior art, the utility model discloses the advantage does:
the utility model discloses a select the pressure controller of installation from taking the screw cap needle ejector filling fluorine pipeline, open through pressure value control condensation fan and stop, adjustment condenser temperature and pressure solve the problem on the low side of air-cooled air conditioner cooling water set condensation pressure of working under the low temperature environment, have with low costs, convenient and fast's advantage, make air-cooled air conditioner cooling water set condensation pressure control in the certain limit to make the normal work of refrigerating unit, improved the security and the reliability of system operation.
Drawings
Fig. 1 is a schematic diagram of the system of the present invention.
Fig. 2 is a schematic diagram of the system connection of the present invention.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 1, a low-temperature environment air-conditioning refrigeration condensing fan control system comprises a controller mainboard AP1, an ac contactor KM1, an ac contactor KM2, an ac contactor KM3, an overload relay FR1, an overload relay FR2, an overload relay FR3, and a pressure controller PH, wherein:
one ends of respective normally open contacts of an alternating current contactor KM1, an alternating current contactor KM2 and an alternating current contactor KM3 are respectively connected with a live wire, the other ends of the respective normally open contacts of the alternating current contactor KM1, the alternating current contactor KM2 and the alternating current contactor KM3 are connected with one end of respective coils of an overload relay FR1, an overload relay FR2 and an overload relay FR3 in a one-to-one correspondence mode, and the other ends of the respective coils of the overload relay FR1, the overload relay FR2 and the overload relay FR3 are connected with power supply ends of a compressor, a condensation fan and;
one voltage output end in the controller mainboard AP1 is connected with one end of a normally closed contact in the overload relay FR1, and the other end of the normally closed contact in the overload relay FR1 is connected with one end of a coil of the alternating current contactor KM 1;
the other voltage output end of the controller mainboard AP1 is connected with one end of a relay electrical contact of a pressure controller PH, a pressure detection element of the pressure controller PH is communicated with a fluorine-filled pipeline bypass in an air-conditioning refrigeration system, the other end of the relay electrical contact of the pressure controller PH is connected with one end of a normally closed contact of an overload relay FR2, and the other end of the normally closed contact of the overload relay FR2 is connected with one end of a coil of an alternating current contactor KM 2;
a third voltage output end in the controller mainboard AP1 is connected with one end of a normally closed contact in the overload relay FR3, and the other end of the normally closed contact in the overload relay FR3 is connected with one end of a coil of the alternating current contactor KM 3;
the utility model discloses in, the zero line is reconnected after the zero line incoming end of the respective coil other end of ac contactor KM1, ac contactor KM2, ac contactor KM3 and controller mainboard AP1 connects altogether.
The utility model discloses in, controller mainboard AP1 model is DF2FS-TS7C, and the live wire is connected to controller mainboard AP 1's live wire incoming end. The controller main board AP1 is also connected to an operation board AP 2.
In the utility model discloses in, ac contactor KM1 model is LC1-D2510N M7, and ac contactor KM2 model is LC1-D0910N M7, and ac contactor KM3 model is LC1-D1210N M7.
The utility model discloses in, overload relay FR1 model is LRD-16C, and overload relay FR2 number is LRD-07C, and overload relay FR3 is LRD-10C.
In the utility model, the PH model of the pressure controller is RF8801.3MPa OFF/1.8MPa ON.
As shown in fig. 2, the specific connections are: the three-phase 380V power incoming line is connected with an air switch QA terminal 2T1, 4T2 and 6T3, an N terminal is connected with a zero line, a PE terminal is connected with a protective grounding line, an outgoing line terminal 1L1, 3L2 and 5L3 of the air switch QA are connected with a connecting terminal 1L1, 3L 1 and 5L 1 of an alternating current contactor KM1, the N terminal is connected with a working zero line, the PE terminal is connected with a load protection grounding line, normally-open contact ends 1L1, 3L 1 and 5L 1 of the alternating current contactor KM1 are connected with a live line L1, an L1 and an L1 in a one-to-one correspondence manner, and normally-open contact ends 1L1, 3L 1 and a live line 5L 1 of the alternating current contactor KM1 are connected with a live line L1, an L1 and an L1 in a one-to-one correspondence manner.
The other ends of normally open contacts 2T1, 4T2 and 6T3 of the alternating current contactor KM1 are connected with one end A2 of a coil of an overload relay FR1, the other ends of normally open contacts 2T1, 4T2 and 6T3 of the alternating current contactor KM2 are connected with one end A2 of a coil of the overload relay FR2, and the other ends of normally open contacts 2T1, 4T2 and 6T3 of the alternating current contactor KM3 are connected with one end A2 of a coil of the overload relay FR 3.
The other ends 2T1, 4T2 and 6T3 of the coil of the overload relay FR1 are connected with three-phase power source ends T1, T2 and T3 of the compressor MC in a one-to-one correspondence mode, the other ends 2T1, 4T2 and 6T3 of the coil of the overload relay FR2 are connected with three-phase power source ends T1, T2 and T3 of the condensing fan MF in a one-to-one correspondence mode, and the other ends 2T1, 4T2 and 6T3 of the coil of the overload relay FR3 are connected with three-phase power source ends T1, T2 and T3 of the water pump MP in a one-to.
The voltage output end D21 of the controller main board AP1 is connected to one terminal 96 of the normally closed contact in the overload relay FR1, and the other terminal 95 of the normally closed contact in the overload relay FR1 is connected to one terminal a2 of the coil of the ac contactor KM 1.
The voltage output end D02 of the controller mainboard AP1 is connected with one end of a relay contact of the pressure controller PH, the other end of the relay contact of the pressure controller PH is connected with one terminal 96 of a normally closed contact in an overload relay FR2, and the other terminal 95 of the normally closed contact in the overload relay FR2 is connected with one terminal A2 of a coil of an alternating current contactor KM 2.
The voltage output end D01 of the controller main board AP1 is connected to one terminal 96 of the normally closed contact in the overload relay FR3, and the other terminal 95 of the normally closed contact in the overload relay FR3 is connected to one terminal a2 of the coil of the ac contactor KM 3.
The other terminal A1 of the coil of the alternating current contactor KM1, the other terminal A1 of the coil of the alternating current contactor KM2 and the other terminal A1 of the coil of the alternating current contactor KM3 are connected with the neutral wire access end of the controller main board AP1 in a common mode and then connected with the neutral wire.
The live wire access end of the controller mainboard AP1 is respectively connected with the live wires L1, L2 and L3.
When the air-cooled air-conditioning water chilling unit is powered ON, the operating panel AP2 presses a start button, the alternating current contactor KM3 is attracted, the water pump MP is started for 3 minutes, normally open contacts of the alternating current contactors KM1 and KM2 are attracted, the compressor MC and the condensing fan MF are started, when the ambient temperature is reduced and the condensing pressure is reduced to P ≦ 1.3MPa, a relay contact of the pressure controller PH is changed from ON (ON) to OFF (OFF), a coil of the alternating current contactor KM2 is powered OFF, the condensing fan stops working, the temperature of the condenser of the air-cooled air-conditioning water chilling unit is increased, the condensing pressure is increased, when the condensing pressure is increased to P ≥ 1.8MPa, the relay contact of the pressure controller PH is changed from OFF (OFF) to ON (ON), the normally open contact of the alternating current contactor KM2 is attracted, the condensing fan is started, the temperature of the condenser of the air-cooled air-, and the condensing pressure is adjusted to keep the condensing pressure of the air-cooled air-conditioning water chiller within a certain range, so that the unit works normally.
The embodiments of the present invention are only descriptions of the preferred embodiments of the present invention, not right the present invention is designed and limited, without departing from the design concept of the present invention, the technical personnel in the field should fall into the protection scope of the present invention for various modifications and improvements made by the technical solution of the present invention, and the technical contents of the present invention are all recorded in the claims.
Claims (6)
1. The utility model provides a low temperature environment air conditioner refrigeration condensation fan control system which characterized in that: the device comprises a controller main board AP1, an alternating current contactor KM1, an alternating current contactor KM2, an alternating current contactor KM3, an overload relay FR1, an overload relay FR2, an overload relay FR3 and a pressure controller PH, wherein:
one ends of respective normally open contacts of an alternating current contactor KM1, an alternating current contactor KM2 and an alternating current contactor KM3 are respectively connected with a live wire, the other ends of the respective normally open contacts of the alternating current contactor KM1, the alternating current contactor KM2 and the alternating current contactor KM3 are connected with one end of respective coils of an overload relay FR1, an overload relay FR2 and an overload relay FR3 in a one-to-one correspondence mode, and the other ends of the respective coils of the overload relay FR1, the overload relay FR2 and the overload relay FR3 are connected with power ends of a compressor MC, a condensation fan MF and a water;
one voltage output end in the controller mainboard AP1 is connected with one end of a normally closed contact in the overload relay FR1, and the other end of the normally closed contact in the overload relay FR1 is connected with one end of a coil of the alternating current contactor KM 1;
the other voltage output end of the controller mainboard AP1 is connected with one end of a relay electrical contact of a pressure controller PH, a pressure detection element of the pressure controller PH is communicated with a fluorine-filled pipeline bypass in an air-conditioning refrigeration system, the other end of the relay electrical contact of the pressure controller PH is connected with one end of a normally closed contact of an overload relay FR2, and the other end of the normally closed contact of the overload relay FR2 is connected with one end of a coil of an alternating current contactor KM 2;
a third voltage output end in the controller mainboard AP1 is connected with one end of a normally closed contact in the overload relay FR3, and the other end of the normally closed contact in the overload relay FR3 is connected with one end of a coil of the alternating current contactor KM 3;
the other ends of the coils of the alternating current contactor KM1, the alternating current contactor KM2 and the alternating current contactor KM3 are connected with the zero line access end of the controller main board AP1 in common and then connected with the zero line.
2. The system of claim 1, wherein the control system comprises: the model of the controller mainboard AP1 is DF2FS-TS7C, and the live wire access end of the controller mainboard AP1 is connected with a live wire.
3. The control system of the refrigeration condensing fan of the air conditioner for the low-temperature environment as claimed in claim 1 or 2, wherein: the controller main board AP1 is also connected to an operation board AP 2.
4. The system of claim 1, wherein the control system comprises: the alternating current contactor KM1 is LC1-D2510N M7, the alternating current contactor KM2 is LC1-D0910N M7, and the alternating current contactor KM3 is LC1-D1210N M7.
5. The system of claim 1, wherein the control system comprises: the model of the overload relay FR1 is LRD-16C, the model of the overload relay FR2 is LRD-07C, and the model of the overload relay FR3 is LRD-10C.
6. The system of claim 1, wherein the control system comprises: the pressure controller PH is of the type RF 880.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921293723.XU CN210461139U (en) | 2019-08-12 | 2019-08-12 | Low-temperature environment air conditioner refrigeration condensation fan control system |
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| CN201921293723.XU CN210461139U (en) | 2019-08-12 | 2019-08-12 | Low-temperature environment air conditioner refrigeration condensation fan control system |
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| CN210461139U true CN210461139U (en) | 2020-05-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374911A (en) * | 2019-08-12 | 2019-10-25 | 合肥天鹅制冷科技有限公司 | A kind of low temperature environment air conditioner refrigerating condensation fan control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374911A (en) * | 2019-08-12 | 2019-10-25 | 合肥天鹅制冷科技有限公司 | A kind of low temperature environment air conditioner refrigerating condensation fan control system |
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