CN203561028U - Central air conditioner pipeline anti-freeze control circuit - Google Patents
Central air conditioner pipeline anti-freeze control circuit Download PDFInfo
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- CN203561028U CN203561028U CN201320744039.5U CN201320744039U CN203561028U CN 203561028 U CN203561028 U CN 203561028U CN 201320744039 U CN201320744039 U CN 201320744039U CN 203561028 U CN203561028 U CN 203561028U
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Abstract
The utility model provides a central air conditioner pipeline anti-freeze control circuit, and belongs to the field of central air conditioner control circuits. According to the anti-freeze control circuit, a change-over normally-open switch is connected between a normally-open contact KT1 of a control water pump and a coil of a first control relay KA1 in an air conditioner main machine circuit board, a change-over normally-open switch is connected between a second normally-open contact KT2 of a temperature controller and a coil of a second control relay KA2, one end of a switch SA1 linked with the change-over normally-open switches is connected with a power supply, and the other end of the switch SA1 is connected with a first contact AL1 of the temperature controller, a second contact AL2 of the temperature controller, a third relay contact KA3 and the temperature controller T2 at the same time; the other end of the first contact AL1 of the temperature controller and the other end of the coil of the third relay contact KA3 are connected between the normally-open contact KT2 and the coil of the second control relay KA2, the normally-open contact KT2 and the coil of the second control relay KA2 control electric auxiliary heating, the other end of the second contact AL2 of the temperature controller is connected with the power supply through the third relay KA3 and an indicator lamp, and the third relay KA3 and the indicator lamp are in parallel connection; the other end of the temperature controller T2 is connected with the power supply. The central air conditioner pipeline anti-freeze control circuit has the advantages of being simple, practical, convenient to maintain, and capable of controlling occurrence of circuit faults.
Description
Technical field
The utility model relates to a kind of central air-conditioning control circuit, particularly the antifreeze control circuit of a kind of central air-conditioning pipeline.
Background technology
At present, in the control circuit of central air-conditioning, include the anti-freezing control system of air-conditioner host, for the water in pipeline is not frozen, need to increase peripheral circuit and when low temperature, start water circulating pump and electric auxiliary heater, and when water temperature rises to certain temperature, stop water circulating pump and electric auxiliary heat to save power consumption.The water circulating pump of this anti-freezing control system is connected with power supply with electrothermal relay contact by the power relay contact of series connection respectively with electric auxiliary heater, and mechanical temperature controller normally-closed contact T1, control relay contact KA2 are connected to power supply after connecting with power relay KM2 coil; Control relay contact KA1 is connected to power supply after connecting with power relay KM1 coil; Normally opened contact KT1, the first control relay KA1 coil of in air-conditioner host circuit board, controlling water pump are connected to power supply after connecting; Normally opened contact KT2, the second control relay KA2 coil of in air-conditioner host circuit board, controlling electric auxiliary heat are connected to power supply after connecting.
This anti-freezing control system just starts compressor in environment temperature during lower than 3 degrees Celsius, and near the water temperature in pipeline main frame is remained on more than 3 degrees Celsius.Because water pump does not turn round, the water temperature away from main frame place in pipeline can approach with ambient temperature, and when ambient temperature reaches subzero 5 degrees Celsius, the water in pipeline starts to freeze.And in the city of northern China, in the time of in the winter time, outdoor temperature can drop to below subzero 10 degree, now the anti-freezing function of this air-conditioning self loses meaning substantially.
Therefore, the anti-freezing function imperfection of existing central air-conditioning, causes circulating water line to freeze, and main frame starts water circulating pump by force, cause motor to burn out or current freely do not cause loine pressure increase damage pipeline, cause central air-conditioning to lose heating function.
Utility model content
The purpose of this utility model is to provide a kind of central air-conditioning pipeline antifreeze control circuit, solve the anti-freezing function imperfection of existing central air-conditioning, cause circulating water line to freeze, main frame starts water circulating pump by force, cause motor to burn out or current freely do not cause loine pressure increase damage pipeline, cause central air-conditioning to lose the problem of heating function.
The purpose of this utility model be achieved in that in air-conditioner host circuit board, control between the normally opened contact KT1 of water pump and the first control relay KA1 coil and in air-conditioner host circuit board, control the normally opened contact KT2 of electric auxiliary heat and the second control relay KA2 coil between be connected with conversion normal open switch, be connected with power supply with switch S A1 one end of this conversion normal open switch interlock, the other end of switch S A1 is connected with temperature controller the first contact A L1, temperature controller the second contact A L2, the 3rd relay contact KA3 and temperature controller T2 simultaneously; The other end of temperature controller the first contact A L1 and the other end of the 3rd relay contact KA3 are connected between the normally opened contact KT2 and the second control relay KA2 coil that controls electric auxiliary heat in air-conditioner host circuit board, and the other end of temperature controller the second contact A L2 connects power supply by the 3rd relay K A3 and the indicator lamp of parallel connection; The other end of temperature controller T2 is connected with power supply.
Beneficial effect: owing to having adopted such scheme, in order not affect the control to water pump and electric auxiliary heat of air-conditioner host, on the basis of original control circuit, increased by a change-over switch SA1, a temperature control instrument T2, with this, carry out the temperature in signal piping, and can start water circulating pump and electric auxiliary heat.In circuit:
1) temperature sense of T2 probe need be arranged in electric auxiliary heat pipeline far away, and actual is 5 meters;
2) AL1 contact is low-temperature warning, is set to 2 degrees Celsius, and warning output return difference AH1 is set to 5;
3) AL2 contact is high temperature alarm, and value is set to 100 degree, when disconnection fault appears in probe, the temperature of system-computed will exceed this value, for pipeline is not frozen, will continue to start water pump and electric auxiliary heat, and can start warning, notify maintenance personal to arrange to change.
4) this circuit should be in failure mode when summer; By SA1, switch off the pump and the interlock of the auxiliary heat of electricity, and the power supply that cuts off T2.
Solved the anti-freezing function imperfection of existing central air-conditioning, cause circulating water line to freeze, main frame starts water circulating pump by force, cause motor to burn out or current freely do not cause loine pressure increase damage pipeline, cause central air-conditioning to lose the problem of heating function, reached the purpose of this utility model.
Advantage: this circuit structure is simple, can effectively solve the problem that the central air-conditioning of cold district is normally worked in the winter time.Circuit the selection of material is electrical equipment common in control circuit, on market, is easy to buy, and cheap, implement convenient and swift.Place near the steps circuit is simple and practical, all energy practical operations of general electric personnel, and also easy to maintenance.Adopt ripe temperature controller product, effectively the generation of control circuit fault.
Accompanying drawing explanation
Fig. 1 is background technology circuit control circuit structure chart.
Fig. 2 is circuit control structure figure of the present utility model.
The specific embodiment
Embodiment 1: the water circulating pump of this antifreeze control circuit is connected with power supply with electrothermal relay contact by the power relay contact of series connection respectively with electric auxiliary heater, and mechanical temperature controller normally-closed contact T1, control relay contact KA2 are connected to power supply after connecting with power relay KM2 coil; Control relay contact KA1 is connected to power supply after connecting with power relay KM1 coil; Normally opened contact KT1, the first control relay KA1 coil of in air-conditioner host circuit board, controlling water pump are connected to power supply after connecting; Normally opened contact KT2, the second control relay KA2 coil of in air-conditioner host circuit board, controlling electric auxiliary heat are connected to power supply after connecting.
In air-conditioner host circuit board, control between the normally opened contact KT1 of water pump and the first control relay KA1 coil and in air-conditioner host circuit board, control the normally opened contact KT2 of electric auxiliary heat and the second control relay KA2 coil between be connected with conversion normal open switch, be connected with power supply with switch S A1 one end of this conversion normal open switch interlock, the other end of switch S A1 is connected with temperature controller the first contact A L1, temperature controller the second contact A L2, the 3rd relay contact KA3 and temperature controller T2 simultaneously; The other end of temperature controller the first contact A L1 and the other end of the 3rd relay contact KA3 are connected between the normally opened contact KT2 and the second control relay KA2 coil that controls electric auxiliary heat in air-conditioner host circuit board, and the other end of temperature controller the second contact A L2 connects power supply by the 3rd relay K A3 and the indicator lamp of parallel connection; The other end of temperature controller T2 is connected with power supply.
Described temperature control instrument T2 model is Huo Yu HYG-731.
1) temperature sense of T2 probe need be arranged in electric auxiliary heat pipeline far away, and actual is 5 meters;
2) AL1 contact is low-temperature warning, is set to 2 degrees Celsius, and warning output return difference AH1 is set to 5;
3) AL2 contact is high temperature alarm, and value is set to 100 degree, when disconnection fault appears in probe, the temperature of system-computed will exceed this value, for pipeline is not frozen, will continue to start water pump and electric auxiliary heat, and can start warning, notify maintenance personal to arrange to change.
4) this circuit should be in failure mode when summer; By SA1, switch off the pump and the interlock of the auxiliary heat of electricity, and the power supply that cuts off T2.
Circuit working process:
1) in outdoor season that can be not icing, change-over switch (SA1) is placed in to open position, makes temperature control instrument power-off.Now electrical heating and water circulating pump are completely by air-conditioner host control.
2) when outdoor temperature is too low while likely freezing, change-over switch (SA1) is placed in to on-position, makes temperature control instrument power connection, simultaneously water pump and electric auxiliary heat are in linkage status.When water temperature in pipeline is lower than design temperature (2 degrees Celsius), no matter whether air-conditioner host moves, and temperature control instrument (T2) will produce low-temperature warning, and the AL1 contact conducting of T2 starts water circulating pump and electrical heating, and now water temperature starts to rise.When water temperature in pipeline reaches 7 degrees Celsius, the AL1 of T2 reports to the police and eliminates, and water circulating pump and electrical heating quit work, and because bad border, external world temperature is low, in pipeline, water temperature can slowly reduce, and when lower than 2 degrees Celsius, T2 restarts water pump and electric auxiliary heat.Make water temperature in pipeline be not less than 2 degrees Celsius, thereby reach antifreeze object.
3) due to temperature sense probe be arranged on outdoor, may be because outside cause cause damaging, for reaching anti-freezing object, now T2 should continue controlled circulation water pump and electrical heating.Temperature sensor damages, the overwhelming majority is broken string, the temperature that now T2 calculates can be the maximum amount journey of instrument, can be greater than 100 degrees Celsius, now T2 produces high temperature alarm, the conducting of AL2 contact, make relay K A3 adhesive and drive alarm HL1, KA3 starts water circulating pump and electrical heating, guarantees that in pipeline, water temperature is not less than 2 degrees Celsius, and HL1 sends sound and light alarm and notifies maintenance personal to overhaul.Because temperature sense probe damages, T2 will be all the time in high temperature alarm state, until repair.Now water pump and electrical heating meeting continuous firing, until pipeline temperature sets value (being generally 45 degrees Celsius) higher than mechanical temperature controller (T1), T1 action, normally-closed contact disconnects, and electric auxiliary heat quits work.Because T1 is mounted near electric auxiliary heat, water temperature is herein higher than other places, and water circulating pump should not stop, therefore work on.Also can add a deblocking temperature control instrument, two in parallel uses of instrument, to prevent instrument or temperature inductor fault, then this repeats no more.
Claims (1)
1. the antifreeze control circuit of central air-conditioning pipeline, the water circulating pump of the antifreeze control circuit of place near the steps is connected with power supply with electrothermal relay contact by the power relay contact of series connection respectively with electric auxiliary heater, and mechanical temperature controller normally-closed contact T1, control relay contact KA2 are connected to power supply after connecting with power relay KM2 coil; Control relay contact KA1 is connected to power supply after connecting with power relay KM1 coil; Normally opened contact KT1, the first control relay KA1 coil of in air-conditioner host circuit board, controlling water pump are connected to power supply after connecting; Normally opened contact KT2, the second control relay KA2 coil of in air-conditioner host circuit board, controlling electric auxiliary heat are connected to power supply after connecting;
It is characterized in that: in air-conditioner host circuit board, control between the normally opened contact KT1 of water pump and the first control relay KA1 coil and in air-conditioner host circuit board, control the normally opened contact KT2 of electric auxiliary heat and the second control relay KA2 coil between be connected with conversion normal open switch, be connected with power supply with switch S A1 one end of this conversion normal open switch interlock, the other end of switch S A1 is connected with temperature controller the first contact A L1, temperature controller the second contact A L2, the 3rd relay contact KA3 and temperature controller T2 simultaneously; The other end of temperature controller the first contact A L1 and the other end of the 3rd relay contact KA3 are connected between the normally opened contact KT2 and the second control relay KA2 coil that controls electric auxiliary heat in air-conditioner host circuit board, and the other end of temperature controller the second contact A L2 connects power supply by the 3rd relay K A3 and the indicator lamp of parallel connection; The other end of temperature controller T2 is connected with power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320744039.5U CN203561028U (en) | 2013-11-16 | 2013-11-16 | Central air conditioner pipeline anti-freeze control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320744039.5U CN203561028U (en) | 2013-11-16 | 2013-11-16 | Central air conditioner pipeline anti-freeze control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203561028U true CN203561028U (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320744039.5U Expired - Fee Related CN203561028U (en) | 2013-11-16 | 2013-11-16 | Central air conditioner pipeline anti-freeze control circuit |
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| CN (1) | CN203561028U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765889A (en) * | 2016-11-29 | 2017-05-31 | 重庆美的通用制冷设备有限公司 | Air-conditioning and its pipeline antifreeze control method and device |
| CN110221636A (en) * | 2019-06-18 | 2019-09-10 | 国网天津市电力公司 | A kind of hot satellite line intelligent temperature controller and its application method |
-
2013
- 2013-11-16 CN CN201320744039.5U patent/CN203561028U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765889A (en) * | 2016-11-29 | 2017-05-31 | 重庆美的通用制冷设备有限公司 | Air-conditioning and its pipeline antifreeze control method and device |
| CN110221636A (en) * | 2019-06-18 | 2019-09-10 | 国网天津市电力公司 | A kind of hot satellite line intelligent temperature controller and its application method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20141116 |
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| EXPY | Termination of patent right or utility model |