CN106765919A

CN106765919A - A kind of control method of air-conditioning, device and air-conditioning

Info

Publication number: CN106765919A
Application number: CN201611120347.5A
Authority: CN
Inventors: 焦华超; 张红梅; 张仕强; 武连发; 熊建国
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2016-12-08
Filing date: 2016-12-08
Publication date: 2017-05-31
Anticipated expiration: 2036-12-08
Also published as: CN106765919B

Abstract

The invention discloses a kind of control method of air-conditioning, device and air-conditioning, the method includes：Determine the current state of the air-conditioning；Wherein, the state, including：Any state in the third state of the first state, the second state by air supply pattern operation and shutdown or disorderly closedown run by refrigeration or dehumidification mode；Determine whether air-conditioning reaches default anti-freeze protective condition under the state；When air-conditioning reaches the anti-freeze protective condition under the state, air-conditioning is set to perform default anti-freeze protection act under the state, so that air-conditioning enters the anti-freeze protected mode being adapted to anti-freeze protection act under the state；Wherein, the anti-freeze protection act, including：The engineering water valve that opening is adapted to air-conditioning.The solution of the present invention, can overcome the easy bursting by freezing of heat exchanger in the prior art, unit operation reliability low and the defect such as poor user experience, realize the beneficial effect that heat exchanger is difficult bursting by freezing, unit operation reliability is high and Consumer's Experience is good.

Description

A kind of control method of air-conditioning, device and air-conditioning

Technical field

The invention belongs to air-conditioning technical field, and in particular to a kind of control method of air-conditioning, device and air-conditioning, more particularly to A kind of anti-freeze of double heat source heat pump air-conditioner set protects control method device corresponding with the method and with the device Air-conditioning.

Background technology

Double heat source heat pump air-conditioner set, while having the heat exchanger of water circulation and the heat exchanger of refrigerant circulation, is heating season Section can be heated using hot water, it is also possible to be heated using heat pump；In refrigeration season, air-conditioning system refrigeration, water system are typically used System is stopped using.

This unit is in refrigerating operaton, if leaving air temp is too low, can cause the heat exchanger surface frosting of refrigerant circulation with And the heat exchanger inner loop water freezing of water circulation, if now can not reasonably control unit out of service, heat exchange occurs The problem of device bursting by freezing.

In the prior art, have that the easy bursting by freezing of heat exchanger, unit operation reliability be low and the defect such as poor user experience.

The content of the invention

It is an object of the present invention to be directed to drawbacks described above, there is provided a kind of control method of air-conditioning, device and air-conditioning, to solve Certainly unit can cause the problem of heat exchanger bursting by freezing in refrigerating operaton if leaving air temp is too low in the prior art, reach heat exchanger It is difficult the effect of bursting by freezing.

The present invention provides a kind of control method of air-conditioning, including：Determine the current state of the air-conditioning；Wherein, the shape State, including：First state, the second state by air supply pattern operation and shutdown or the event run by refrigeration or dehumidification mode Hinder any state in the third state shut down；Determine whether the air-conditioning reaches default anti-freeze ceiling under the state Part；When the air-conditioning reaches the anti-freeze protective condition under the state, perform the air-conditioning pre- under the state If anti-freeze protection act so that the air-conditioning enters the anti-freeze that is adapted to the anti-freeze protection act under the state Protected mode；Wherein, the anti-freeze protection act, including：The engineering water valve that opening is adapted to the air-conditioning.

Optionally it is determined that whether the air-conditioning reaches default anti-freeze protective condition under the state, including：When described When state includes the first state, determine the first temperature at the refrigerant circulation heat exchanger entrance of the air-conditioning whether be less than or Equal to the first preset value, and/or determine whether the second temperature of the water circulation heat exchange device porch of the air-conditioning is less than or equal to Second preset value；It is less than or waits less than or equal to first preset value, and/or the second temperature with when first temperature When second preset value, determine that the air-conditioning reaches the anti-freeze protective condition under the first state；And/or, When the state includes second state or the third state, the temperature for obtaining the air-conditioning local environment is the 3rd temperature Degree；Determine whether the 3rd temperature is less than or equal to the 3rd preset value and determines the water circulation heat exchange device entrance of the air-conditioning Whether the second temperature at place is less than or equal to the second preset value；Preset less than or equal to the described 3rd with when the 3rd temperature Value and when the second temperature is less than or equal to the second preset value, determines that the air-conditioning reaches second state or described the The anti-freeze protective condition under three condition.

Alternatively, wherein it is determined that whether the first temperature at the refrigerant circulation heat exchanger entrance of the air-conditioning is less than or waits In the first preset value, including：Determine whether the operation duration after the compressor start of the air-conditioning reaches the first preset duration；When When the operation duration reaches first preset duration, described the at the refrigerant circulation heat exchanger entrance of the air-conditioning is obtained One temperature；And whether first temperature is determined less than or equal to first preset value；And/or, determine the sky Whether the second temperature of the water circulation heat exchange device porch of tune is less than or equal to the second preset value, including：Determine the air-conditioning Whether the operation duration after compressor start reaches the second preset duration；When the operation duration reaches second preset duration When, obtain the second temperature of the water circulation heat exchange device porch of the air-conditioning；And to the second temperature whether be less than or It is determined equal to second preset value.

Alternatively, wherein, obtain first temperature at the refrigerant circulation heat exchanger entrance of the air-conditioning, including：Obtain Take first temperature that the temperature sensor set by the refrigerant circulation heat exchanger entrance is detected；And/or, and to institute State whether the first temperature is determined less than or equal to first preset value, including：In the 3rd preset duration, to described Whether one temperature is determined less than or equal to first preset value；And/or, the water circulation heat exchange device for obtaining the air-conditioning enters The second temperature at mouthful, including：Obtain what the temperature sensor set by the water circulation heat exchange device porch was detected The second temperature；And/or, and whether the second temperature is determined less than or equal to second preset value, including： In the 4th preset duration, whether the second temperature is determined less than or equal to second preset value；And/or, obtain Temperature i.e. the 3rd temperature of the air-conditioning local environment is taken, including：Obtain by being adapted to the temperature for setting with the air-conditioning local environment The 3rd temperature that degree sensor is detected；And/or, determine the 3rd temperature whether less than or equal to the 3rd preset value, And determine whether the second temperature of the water circulation heat exchange device porch of the air-conditioning is less than or equal to the second preset value, including： In 5th preset duration, whether being less than or equal to the 3rd preset value and the second temperature to the 3rd temperature is It is no to be determined less than or equal to second preset value.

Alternatively, wherein, when the state include the first state when, the anti-freeze protection act also includes：Make The blower fan of the air-conditioning maintains the operation under the first state, and closes the electric expansion valve of the air-conditioning；And/or, work as institute When stating state including second state, the anti-freeze protection act also includes：The blower fan of the air-conditioning is set to maintain described the Operation under two-state.

Alternatively, also include：During the air-conditioning is performed the anti-freeze protection act under the state, really Whether the fixed air-conditioning reaches under the state default anti-freeze exit criteria, and/or determines whether the air-conditioning occurs institute State the conversion of state；When the anti-freeze exit criteria, and/or the air-conditioning that the air-conditioning is reached under the state occur institute When stating the conversion of state, make the anti-freeze protected mode that the air-conditioning is exited under the state.

Optionally it is determined that whether the air-conditioning reaches default anti-freeze exit criteria under the state, including：When described When state includes the first state, determine the first temperature at the refrigerant circulation heat exchanger entrance of the air-conditioning whether be more than or Whether the second temperature equal to the 4th preset value and the water circulation heat exchange device porch of the air-conditioning is pre- more than or equal to the 5th If value；With when first temperature more than or equal to the 4th preset value and the second temperature more than or equal to described the During five preset values, determine that the air-conditioning reaches the anti-freeze exit criteria under the first state；And/or, when the shape When state includes second state or the third state, the second temperature of the water circulation heat exchange device porch of the air-conditioning is determined Whether the 5th preset value is more than or equal to；With when the second temperature is more than or equal to five preset value, it is determined that described Air-conditioning reaches the anti-freeze exit criteria under second state or the third state.

Alternatively, wherein it is determined that whether the first temperature at the refrigerant circulation heat exchanger entrance of the air-conditioning is more than or waits Whether the second temperature in the 4th preset value and the water circulation heat exchange device porch of the air-conditioning is preset more than or equal to the 5th Value, including：In the 6th preset duration, to the first temperature at the refrigerant circulation heat exchanger entrance of the air-conditioning whether be more than or It is determined equal to the 4th preset value；And/or, in the 7th preset duration, to the water circulation heat exchange device porch of the air-conditioning Second temperature whether be determined more than or equal to the 5th preset value；And/or, determine that the water circulation heat exchange device of the air-conditioning enters Whether the second temperature at mouthful is more than or equal to the 5th preset value, including：In the 8th preset duration, the water to the air-conditioning is followed Whether the second temperature at ring heat exchanger entrance is determined more than or equal to the 5th preset value.

Alternatively, also include：Make after the anti-freeze protected mode that the air-conditioning is exited under the state, make described Air-conditioning recovers the state or maintains the conversion of the state；Wherein, when the state includes the first state or described the During two-state, the conversion of the state, including：Shutdown or conversion operation pattern；And/or, when the state includes described the During three condition, the conversion of the state, including：Enter operational mode after start or fault recovery；And/or, when the air-conditioning Reach the anti-freeze protective condition under the state, the anti-freeze that the air-conditioning is reached under the state exits bar When part, the air-conditioning occur at least one of conversion of the state, shown, reminded and default user client communication At least one interactive operation；And/or, the air-conditioning, including：Double heat source air conditioner source pumps.

Match with the above method, another aspect of the present invention provides a kind of control device of air-conditioning, including：Determining unit, The state current for determining the air-conditioning；Wherein, the state, including：By refrigeration or dehumidification mode run first state, Any state in the second state and the third state of shutdown or disorderly closedown run by air supply pattern；Execution unit, uses In it is determined that default anti-freeze protective condition under whether the air-conditioning reaches the state；The execution unit, is additionally operable to work as institute When stating the anti-freeze protective condition that air-conditioning is reached under the state, perform the air-conditioning default antifreeze under the state Knot protection act, so that the air-conditioning enters the anti-freeze protection mould being adapted to the anti-freeze protection act under the state Formula；Wherein, the anti-freeze protection act, including：The engineering water valve that opening is adapted to the air-conditioning.

Alternatively, execution unit, including：Judge module, for when the state includes the first state, determining institute Whether the first temperature at the refrigerant circulation heat exchanger entrance of air-conditioning is stated less than or equal to the first preset value, and/or is determined described Whether the second temperature of the water circulation heat exchange device porch of air-conditioning is less than or equal to the second preset value；With when first temperature it is small When first preset value, and/or the second temperature are less than or equal to second preset value, the sky is determined Tune reaches the anti-freeze protective condition under the first state；And/or, acquisition module, for including institute when the state When stating the second state or the third state, the temperature for obtaining the air-conditioning local environment is the 3rd temperature；The judge module, It is additionally operable to determine whether the 3rd temperature is less than or equal to the 3rd preset value and determines that the water circulation heat exchange device of the air-conditioning enters Whether the second temperature at mouthful is less than or equal to the second preset value；Preset less than or equal to the described 3rd with when the 3rd temperature Value and when the second temperature is less than or equal to the second preset value, determines that the air-conditioning reaches second state or described the The anti-freeze protective condition under three condition.

Alternatively, the execution unit, also includes：Time block；Wherein, the time block, for determining the sky Whether the operation duration after the compressor start of tune reaches the first preset duration；And, the acquisition module is additionally operable to when described When operation duration reaches first preset duration, first temperature at the refrigerant circulation heat exchanger entrance of the air-conditioning is obtained Degree；And, whether the judge module is additionally operable to carry out really first temperature less than or equal to first preset value It is fixed；And/or, the time block is additionally operable to determine whether the operation duration after the compressor start of the air-conditioning reaches second Preset duration；And, the acquisition module is additionally operable to, when the operation duration reaches second preset duration, obtain institute State the second temperature of the water circulation heat exchange device porch of air-conditioning；And, the judge module is additionally operable to the described second temperature Whether degree is determined less than or equal to second preset value.

Alternatively, wherein, the acquisition module, including：First temperature sensor；The acquisition module, is additionally operable to obtain First temperature that the temperature sensor set by the refrigerant circulation heat exchanger entrance is detected；And/or, the judgement Module, is additionally operable in the 3rd preset duration, and whether first temperature is carried out really less than or equal to first preset value It is fixed；And/or, the acquisition module also includes：Second temperature sensor；The acquisition module, is additionally operable to obtain and is followed by the water The second temperature that the temperature sensor set at ring heat exchanger entrance is detected；And/or, the judge module is additionally operable to In the 4th preset duration, whether the second temperature is determined less than or equal to second preset value；And/or, institute Acquisition module is stated, is also included：Three-temperature sensor；The acquisition module, be additionally operable to obtain by with the air-conditioning local environment It is adapted to the 3rd temperature that the temperature sensor for setting is detected；And/or, the judge module is additionally operable to default the 5th In duration, whether whether the 3rd temperature is less than less than or equal to the 3rd preset value and the second temperature or It is determined equal to second preset value.

Alternatively, also include：The execution unit, is additionally operable to described antifreeze in the case where the air-conditioning execution state is made During knot protection act, determine whether the air-conditioning reaches default anti-freeze exit criteria, and/or determination under the state Whether the air-conditioning there is the conversion of the state；And, when the anti-freeze that the air-conditioning is reached under the state is exited When condition, and/or the air-conditioning occur the conversion of the state, the anti-freeze for making the air-conditioning exit under the state is protected Shield pattern.

Alternatively, when the execution unit includes judge module, the judge module is additionally operable to include when the state During the first state, determine the first temperature at the refrigerant circulation heat exchanger entrance of the air-conditioning whether more than or equal to the 4th Whether the second temperature of the water circulation heat exchange device porch of preset value and the air-conditioning is more than or equal to the 5th preset value；With When first temperature is more than or equal to the 4th preset value and the second temperature is more than or equal to the 5th preset value When, determine that the air-conditioning reaches the anti-freeze exit criteria under the first state；And/or, the judge module is also used In when the state includes second state or the third state, the water circulation heat exchange device porch of the air-conditioning is determined Second temperature whether be more than or equal to the 5th preset value；It is more than or equal to the 5th preset value with when the second temperature When, determine that the air-conditioning reaches the anti-freeze exit criteria under second state or the third state.

Alternatively, wherein, the judging unit is additionally operable in the 6th preset duration, to the refrigerant circulation of the air-conditioning Whether the first temperature at heat exchanger entrance is determined more than or equal to the 4th preset value；And/or, the judging unit, also For in the 7th preset duration, to the second temperature of the water circulation heat exchange device porch of the air-conditioning whether more than or equal to the Five preset values are determined；And/or, the judging unit is additionally operable in the 8th preset duration, to the water circulation of the air-conditioning Whether the second temperature at heat exchanger entrance is determined more than or equal to the 5th preset value.

Alternatively, also include：The execution unit, is additionally operable to the anti-freeze for making the air-conditioning exit under the state After protected mode, the air-conditioning is recovered the state or maintain the conversion of the state；Wherein, when the state includes When the first state or second state, the conversion of the state, including：Shutdown or conversion operation pattern；And/or, When the state includes the third state, the conversion of the state, including：Enter operation after start or fault recovery Pattern；And/or, interactive unit, for reaching the anti-freeze protective condition, the air-conditioning under the state when the air-conditioning When reaching the anti-freeze exit criteria under the state, the air-conditioning at least one of conversion of the state occurring, enter Row display, prompting and at least one interactive operation of default user client communication；And/or, the air-conditioning, including：Double thermals source are empty Adjust source pump.

Match with said apparatus, further aspect of the present invention provides a kind of air-conditioning, including：The control of above-described air-conditioning Device.

The solution of the present invention, control method is protected by the anti-freeze of rational double heat source air conditioner source pumps, makes unit Protected in the suitable time, it is to avoid air-conditioning equipment is damaged.

Further, the solution of the present invention, control method is protected by the anti-freeze of rational double heat source air conditioner source pumps, Unit is set to exit protection in the suitable time, it is ensured that air-conditioning equipment reliability service.

Further, the solution of the present invention, according to the state of double heat source air conditioner source pumps, discriminatively enters anti-freeze and protects Shield, and different anti-freeze protection controls are performed, quickly to improve heat exchange temperature, so that unit exits anti-freeze protection.

Thus, the solution of the present invention, by determining air-conditioning state, judges whether air-conditioning needs anti-freeze under corresponding state Protection, and anti-freeze protection is carried out when needing anti-freeze to protect, and anti-freeze guarantor is exited when not needing anti-freeze to protect Shield, solves the problems, such as that unit can cause heat exchanger bursting by freezing in refrigerating operaton if leaving air temp is too low in the prior art, so that, Overcome low and poor user experience the defect of the easy bursting by freezing of heat exchanger in the prior art, unit operation reliability, realize that heat exchanger is difficult Bursting by freezing, the beneficial effect that unit operation reliability is high and Consumer's Experience is good.

Other features and advantages of the present invention will be illustrated in the following description, also, the partly change from specification Obtain it is clear that or being understood by implementing the present invention.

Below by drawings and Examples, technical scheme is described in further detail.

Brief description of the drawings

Fig. 1 is the schematic flow sheet of an embodiment of the control method of air-conditioning of the invention；

Fig. 2 be the method for the present invention in air supply pattern operation the second state under shutdown or disorderly closedown the 3rd shape The schematic flow sheet of the embodiment for determining whether to reach anti-freeze protective condition under state；

Timing determination refrigerant circulation changes under the first state that Fig. 3 runs for refrigeration in the method for the present invention or dehumidification mode Whether hot device inlet temperature value reaches the schematic flow sheet of an embodiment of anti-freeze protective condition；

Fig. 4 is the heat exchange of timing determination water circulation under refrigeration in the method for the present invention or the first state of dehumidification mode operation The flow whether device inlet temperature value reaches an embodiment of the schematic flow sheet of an embodiment of anti-freeze protective condition is shown It is intended to；

Fig. 5 be the method for the present invention in perform anti-freeze protection act during determine whether to reach anti-freeze exit criteria The schematic flow sheet of one embodiment；

Fig. 6 is the structural representation of an embodiment of the control device of air-conditioning of the invention；

Fig. 7 is the structural representation of an embodiment of acquisition module in device of the invention；

Fig. 8 be air-conditioning of the invention (for example：Double heat source air conditioner source pumps) an embodiment anti-cold air control stream Journey schematic diagram.

With reference to accompanying drawing, reference is as follows in the embodiment of the present invention：

102- determining units；104- execution units；1042- acquisition modules；The temperature sensors of 10422- first；10424- Two temperature sensors；10426- three-temperature sensors；1044- judge modules；1046- time blocks；106- interactive units.

Specific embodiment

To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and Corresponding accompanying drawing is clearly and completely described to technical solution of the present invention.Obviously, described embodiment is only the present invention one Section Example, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing Go out the every other embodiment obtained under the premise of creative work, belong to the scope of protection of the invention.

Embodiments in accordance with the present invention, there is provided a kind of control method of air-conditioning, the one of the method for the present invention as shown in Figure 1 The schematic flow sheet of embodiment.The control method of the air-conditioning can include：

At step S110, the current state of the air-conditioning is determined.Wherein, the state, can include：By freezing or remove In the third state of the first state of wet model operation, the second state run by air supply pattern and shutdown or disorderly closedown Any state.

For example：Judge the current state of unit, if be refrigeration or dehumidification mode operation, air supply pattern operation, shutdown or One kind in disorderly closedown.

Thus, by determining that air-conditioning is currently located in default multiple states in concrete form, with the state according to air-conditioning Discriminatively anti-freeze protection control is carried out, and then may insure that air-conditioning equipment is not frozen to damage, and carried out based on state Discriminatively anti-freeze protection control also helps energy-conservation.

Alternatively, the air-conditioning, can include：Double heat source air conditioner source pumps.

For example：The unit that the application is related to is while having two units of heat exchanger (rather than single refrigerant circulation Unit or water circulation unit), a heat exchanger is used for refrigerant circulation, and a heat exchanger is used for water circulation.What the application was proposed The characteristics of scheme is based on the unit, under unit different working condition, there is combine unit water side detection temperature, cold with distinguishing Matchmaker surveys the parameter such as detection temperature or environment temperature and is judged and performed different anti-freezes actions, with reach protection unit and The quick purpose for releasing anti-freeze protection.

For example：The water- to-water heat exchanger of double heat source air conditioner source pumps only has the hot water circuit not have circulating chilled water, in refrigeration season, Water- to-water heat exchanger is not involved in refrigerating operaton, it should the water in water- to-water heat exchanger of draining, but is not excluded for the situation of some engineering not drainings, I.e. freeze season when water- to-water heat exchanger in also have accumulate recirculated water.

Thus, control is protected by the anti-freeze to double heat source air conditioner source pumps, double heat source air conditioner heat pumps can be lifted The safety and reliability of unit, and then lift the experience of user.

At step S120, determine whether the air-conditioning reaches default anti-freeze protective condition under the state.

For example：According to the current state of unit, the judgement whether the anti-freeze protective condition under every kind of state reaches is carried out.

Thus, by determining whether air-conditioning reaches the anti-freeze protective condition under corresponding state, and then can be according to corresponding Anti-freeze protection act under state carries out anti-freeze protection control to air-conditioning, to realize discriminatively carrying out anti-freeze to air-conditioning Protection control, is conducive to lifting reliability and the accuracy that anti-freeze protection act is performed, and then lift anti-freeze protecting effect.

In an optional example, determine whether the air-conditioning reaches default anti-freeze under the state in step S120 One process of protective condition, can include：When the state can include the first state, the cold of the air-conditioning is determined First temperature of matchmaker's circulation heat exchanger porch is (for example：Temperature value T in unit at the heat exchanger entrance of refrigerant circulation_Enter) whether Less than or equal to the first preset value (for example：Preset temperature value T₁), and/or the water circulation heat exchange device porch for determining the air-conditioning Second temperature (for example：Temperature value T in unit at the heat exchanger entrance of water circulation_Water) whether it is less than or equal to the second preset value (for example：Preset temperature value T₂)；With when first temperature is less than or equal to first preset value, and/or second temperature When degree is less than or equal to second preset value, determine that the air-conditioning reaches the anti-freeze ceiling under the first state Part.

For example：If unit is refrigeration or dehumidification mode operation, if meeting T_Enter≤ preset temperature T₁、T_Water≤ preset temperature T₂'s Either condition in two conditions, then unit into anti-freeze protect.

It is alternatively possible to work as first temperature more than first preset value and the second temperature more than described the During two preset values, the air-conditioning is set to maintain the first state.

For example：If unit is refrigeration or dehumidification mode operation, if two above condition is all unsatisfactory for, continue to freeze or remove Wet model runs.

Wherein, the refrigerant circulation heat exchanger, can be used for the heat exchanger of refrigerant circulation in the air-conditioning.It is described Water circulation heat exchange device, can be used for the heat exchanger of water circulation in the air-conditioning.

Thus, by temperature value, the heat exchanger of water circulation at heat exchanger entrance in the first state to refrigerant circulation Temperature value of porch etc. is judged, and then is provided to determine whether air-conditioning reaches the anti-freeze protective condition under first state Precisely reliable foundation, and judgment mode is easy, workable.

It is alternatively possible to determine under refrigeration or the first state of dehumidification mode operation in the method for the present invention with reference to shown in Fig. 3 When determine whether temperature value at the heat exchanger entrance of refrigerant circulation reaches the flow of an embodiment of anti-freeze protective condition and illustrate Whether figure, further illustrate the first temperature at the refrigerant circulation heat exchanger entrance of the above-mentioned determination air-conditioning less than or equal to the The detailed process of one preset value.

Step S310, determines whether the operation duration after the compressor start of the air-conditioning reaches the first preset duration (example Such as：Preset time t 1).

Step S320, when the operation duration reaches first preset duration, obtains the refrigerant circulation of the air-conditioning First temperature at heat exchanger entrance.

More alternatively, first temperature at the refrigerant circulation heat exchanger entrance of the air-conditioning is obtained in step S320, Can include：Obtain first temperature that the temperature sensor set by the refrigerant circulation heat exchanger entrance is detected.

Thus, the temperature sensor at refrigerant circulation heat exchanger entrance is arranged on by adaptation and detects the first temperature, detection Mode is convenient, and testing result accuracy is good.

Step S330, and whether first temperature is determined less than or equal to first preset value.

Thus, whether by obtaining the first temperature after operation of air conditioner stabilization, and the first temperature in certain time length is determined Less than or equal to the first preset value, be conducive to improving the accuracy for judging the first temperature.

More alternatively, whether carried out really less than or equal to first preset value in step S330 and to first temperature It is fixed, can include：In the 3rd preset duration (for example：Preset time t 2) in, whether institute is less than or equal to first temperature The first preset value is stated to be determined.

Wherein, the 3rd preset duration, can include：The 3rd of continuous 3rd preset duration or intermittent integration is pre- If duration.

For example：The compressor start t1 times, and continuous t2 time detectings are to T_Enter≤ preset temperature T₁。

Thus, by timing controlled, the first temperature can be carried out really after operation of air conditioner stabilization and operation certain time length It is fixed, the accuracy that the first temperature of lifting determines, and then lift the reliability and promptness of anti-freeze protection control under the state.

It is alternatively possible to determine under refrigeration or the first state of dehumidification mode operation in the method for the present invention with reference to shown in Fig. 4 When determine whether temperature value at the heat exchanger entrance of water circulation reaches the schematic flow sheet of an embodiment of anti-freeze protective condition An embodiment schematic flow sheet, further illustrate the above-mentioned determination air-conditioning water circulation heat exchange device porch second temperature Whether degree is less than or equal to the detailed process of the second preset value.

Step S410, determines whether the operation duration after the compressor start of the air-conditioning reaches the second preset duration (example Such as：Preset time t 3).

Step S420, when the operation duration reaches second preset duration, the water circulation for obtaining the air-conditioning is changed The second temperature of hot device porch.

More alternatively, the second temperature of the water circulation heat exchange device porch of the air-conditioning is obtained in step S420, can To include：Obtain the second temperature that the temperature sensor set by the water circulation heat exchange device porch is detected.

Thus, the temperature sensor for being arranged on water circulation heat exchange device porch by adaptation detects second temperature, detection side Formula is convenient, and testing result accuracy is good.

Step S430, and whether the second temperature is determined less than or equal to second preset value.

Thus, whether by obtaining second temperature after operation of air conditioner stabilization, and the second temperature in certain time length is determined Less than or equal to the second preset value, be conducive to improving the accuracy for judging second temperature.

More alternatively, whether carried out really less than or equal to second preset value in step S430 and to the second temperature It is fixed, can include：In the 4th preset duration (for example：Preset time t 4) in, whether institute is less than or equal to the second temperature The second preset value is stated to be determined.

Wherein, the 4th preset duration, can include：The 4th of continuous 4th preset duration or intermittent integration is pre- If duration.

For example：The compressor start t3 times, and continuous t4 time detectings are to T_Water≤ preset temperature T₂。

Thus, by timing controlled, second temperature can be carried out really after operation of air conditioner stabilization and operation certain time length It is fixed, the accuracy that lifting second temperature determines, and then lift the reliability and promptness of anti-freeze protection control under the state.

In an optional example, the second state of air supply pattern operation in the method for the present invention shown in Fig. 2 can be combined Under or the third state of shutdown or disorderly closedown under determine whether to reach the flow of an embodiment of anti-freeze protective condition and illustrate Figure, further illustrates and determines whether the air-conditioning reaches the another of default anti-freeze protective condition under the state in step S120 One process.

Step S210, when the state can include second state or the third state, obtains the air-conditioning The temperature of local environment be the 3rd temperature (for example：The environment temperature T of unit_Ring)。

Alternatively, temperature i.e. the 3rd temperature of the air-conditioning local environment is obtained in step S210, can be included：Obtain by The 3rd temperature that the temperature sensor for setting is detected is adapted to the air-conditioning local environment.

Thus, the 3rd temperature is detected by being adapted to the temperature sensor for setting with air-conditioning, detection mode is convenient, testing result Accuracy is good.

Whether less than or equal to the 3rd preset value (for example step S220, determine the 3rd temperature：Preset temperature value T₅)、 And determine whether the second temperature of the water circulation heat exchange device porch of the air-conditioning is less than or equal to the second preset value；With when described When 3rd temperature is less than or equal to the second preset value less than or equal to the 3rd preset value and the second temperature, institute is determined State the anti-freeze protective condition that air-conditioning is reached under second state or the third state.

For example：If unit runs for air supply pattern, judge whether to meet：Continuous t7 time detectings are to T_Ring≤ preset temperature T₅And T_Water≤ preset temperature T₂.If so, then unit is protected into anti-freeze.

For example：If unit is off-mode or disorderly closedown state, judge whether to meet：Continuous t7 time detectings are arrived T_Ring≤ preset temperature T₅And T_Water≤ preset temperature T₂.If so, then unit is protected into anti-freeze.

It is alternatively possible to work as the 3rd temperature more than the 3rd preset value, and/or the second temperature more than described During the second preset value, the air-conditioning is set to maintain second state or the third state.

For example：If unit runs for air supply pattern, if it is not, then continuing air supply pattern operation.

For example：If unit is off-mode or disorderly closedown state, if it is not, then maintaining current state.

Thus, judged by the environment temperature to unit local environment under the second state or the third state, and then To determine that the anti-freeze protective condition whether air-conditioning is reached under the second state or the third state is provided precisely and reliable foundation, Air-conditioning is caused to freeze and damage in case winter temperature is too low.

Alternatively, determine the 3rd temperature whether less than or equal to described in the 3rd preset value and determination in step S220 Whether the second temperature of the water circulation heat exchange device porch of air-conditioning is less than or equal to the second preset value, can include：It is pre- the 5th If duration is (for example：Preset time t 7) in, to the 3rd temperature whether less than or equal to the 3rd preset value and described Whether second temperature is determined less than or equal to second preset value.

Wherein, the 5th preset duration, can include：The 5th of continuous 5th preset duration or intermittent integration is pre- If duration.

Thus, by obtaining the environment temperature of air-conditioning local environment, and judge whether environment temperature is less than in certain time length Or equal to the 3rd preset value, and then the precise results judged environment temperature can be obtained, and processing mode is succinct, reliable.

At step S130, when the air-conditioning reaches the anti-freeze protective condition under the state, make the sky Adjust and perform default anti-freeze protection act under the state, so that the air-conditioning is protected under entering the state with the anti-freeze The anti-freeze protected mode of shield action adaptation.Wherein, the anti-freeze protection act, can include：Open suitable with the air-conditioning The engineering water valve matched somebody with somebody.

For example：According to the state of double heat source air conditioner source pumps, discriminatively enter anti-freeze and protect, and perform different Anti-freeze protection control, quickly to improve heat exchange temperature.

For example：Engineering water valve is opened, and can cause that the water in water and pipeline in heat exchanger carries out heat transfer or water is followed Ring, improves heat exchange temperature.

For example：Because the unit involved by the application is while having refrigerant circulation heat exchanger and water circulation heat exchange device, The electronic expansion valve controls that the break-make and Flow-rate adjustment of refrigerant circulation pass through refrigerant heat exchanger upstream, and the break-make of water circulation will lead to The water valve (i.e. engineering water valve) for crossing project installation is controlled.Wherein, engineering water valve can be an electronic two-port valve, break-make Signal can be sent by the mainboard of unit.

Alternatively, in step s 130, the anti-freeze ceiling that the air-conditioning is not up under the state can be worked as During part, the air-conditioning is set to maintain the state.

Thus, by reaching corresponding state when air-conditioning under anti-freeze protective condition when, make air-conditioning enter corresponding state under Anti-freeze protected mode, with realize carrying out air-conditioning (especially double heat source air conditioner source pumps) reasonably anti-freeze protection control System, makes unit be protected in the suitable time, it is to avoid air-conditioning equipment is damaged.

Alternatively, when the state can include the first state, the anti-freeze protection act can also include： Make the operation under the blower fan maintenance first state of the air-conditioning, and close the electric expansion valve of the air-conditioning.

For example：Unit performs the action of following anti-freeze protection.Anti-freeze protection act, can include：Fan part is tieed up Original running status is held, electric expansion valve is closed, and engineering water valve is opened.Wherein, electric expansion valve can be provided in refrigerant and change One part of the upstream in hot device refrigeration direction, the flow for controlling refrigerant.

For example：Fan part maintains running status, and can maintain the circulation of air makes heat exchange temperature raise faster.Electronics is swollen Swollen valve is closed, and the refrigerant of more low temperature can be avoided to enter heat exchanger.

Alternatively, when the state can include second state, the anti-freeze protection act can also include： Make the operation under blower fan maintenance second state of the air-conditioning.

For example：If unit runs for air supply pattern, the anti-freeze protection act that unit is performed can include：Fan part is tieed up Original running status is held, engineering water valve is opened.

For example：If unit is off-mode or disorderly closedown state, the anti-freeze protection act that unit is performed can be wrapped Include：Engineering water valve is opened.

Thus, the anti-freeze protection act for setting is adapted to by based on different conditions, on the one hand may insure corresponding state The reliability of lower anti-freeze protection control, on the other hand can be based on different conditions and select different anti-freeze protection acts to carry The efficiency of anti-freeze high protection and be conducive to energy-conservation.

In an optional embodiment, can also include：Exit the process of anti-freeze protected mode.

Specifically, can determine whether to reach with reference to during performing anti-freeze protection act in the method for the present invention shown in Fig. 5 To the schematic flow sheet of an embodiment of anti-freeze exit criteria, the specific mistake for exiting anti-freeze protected mode is further illustrated Journey.

Step S510, during the air-conditioning is performed the anti-freeze protection act under the state, determines institute State whether air-conditioning reaches under the state default anti-freeze exit criteria, and/or determine whether the air-conditioning occurs the shape The conversion of state.

In an optional example, determine whether the air-conditioning reaches default anti-freeze under the state in step S510 Exit criteria, can include：When the state can include the first state, the refrigerant circulation heat exchange of the air-conditioning is determined Whether more than or equal to the 4th preset value (for example the first temperature of device porch：Preset temperature value T₃) and the air-conditioning Whether more than or equal to the 5th preset value (for example the second temperature of water circulation heat exchange device porch：Preset temperature value T₄)；To work as First temperature is more than or equal to the 4th preset value and the second temperature is more than or equal to the 5th preset value When, determine that the air-conditioning reaches the anti-freeze exit criteria under the first state.

For example：During above anti-freeze protection act under the first state for performing refrigeration or dehumidification mode operation, together When make following to judge：First, continuous t5 time detectings are to T_Enter>=preset temperature T₃, and continuous t6 time detectings are to T_Water≥T₄.Its Two, user carries out power-off operation or is transferred to other patterns (heat, isotype of blowing).

For example：During above anti-freeze protection act under the first state for performing refrigeration or dehumidification mode operation, if Meet the either condition in two above condition, then unit exits anti-freeze protection, running status or entrance are used before recovery The new state (off-mode or other patterns) of family setting.

In an optional specific example, the first temperature at the refrigerant circulation heat exchanger entrance of the above-mentioned determination air-conditioning Whether it is more than or equal to the 4th preset value, can includes：In the 6th preset duration (for example：Preset time t 5) in, to the sky Whether the first temperature at the refrigerant circulation heat exchanger entrance of tune is determined more than or equal to the 4th preset value.

Wherein, the 6th preset duration, can include：The 6th of continuous 6th preset duration or intermittent integration is pre- If duration.

In an optional specific example, the second temperature of the water circulation heat exchange device porch of the above-mentioned determination air-conditioning is It is no to be more than or equal to the 5th preset value, can include：In the 7th preset duration (for example：Preset time t 6) in, to the air-conditioning The second temperature of water circulation heat exchange device porch whether be determined more than or equal to the 5th preset value.

Wherein, the 7th preset duration, can include：The 7th of continuous 7th preset duration or intermittent integration is pre- If duration.

Thus, judged by the timing to anti-freeze exit criteria under first state, be conducive to being lifted the essence of judged result Parasexuality and reliability.

It is alternatively possible to work as first temperature less than the 4th preset value, and/or the second temperature less than described During five preset values, the air-conditioning is set to maintain the anti-freeze being adapted to the anti-freeze protection act under the first state to protect Pattern.

For example：During above anti-freeze protection act under the first state for performing refrigeration or dehumidification mode operation, if Two above condition is all unsatisfactory for, then continue executing with anti-freeze protection act.

Wherein, the 4th preset value is more than first preset value, and the 5th preset value is preset more than described second Value.

Thus, during being performed by anti-freeze protection act in the first state, judge whether to reach under the state Anti-freeze exit criteria, and then can be provided precisely and reliable foundation to exit anti-freeze protected mode, be conducive to lifting anti- The promptness that freeze protection is exited, and then can in time recover the normal operation of air-conditioning or stop anti-freeze protection act in time And energy-conservation.

In an optional example, determine whether the air-conditioning reaches default anti-freeze under the state in step S510 Exit criteria, can also include：When the state can include second state or the third state, the sky is determined Whether the second temperature of the water circulation heat exchange device porch of tune is more than or equal to the 5th preset value；It is more than with when the second temperature Or during equal to five preset value, determine that the air-conditioning reaches described antifreeze under second state or the third state Knot exit criteria.

For example：Perform air supply pattern operation the second state under shutdown or disorderly closedown the third state under with During upper anti-freeze protection act, while making following judgement：First, continuous t8 time detectings are to T_Water>=preset temperature T₄.Second, User carries out power-off operation.Third, user is transferred to other patterns (freeze, heat isotype).

For example：Perform air supply pattern operation the second state under shutdown or disorderly closedown the third state under with During upper anti-freeze protection act, if meeting the either condition in three above condition, unit exits anti-freeze protection, recovers Before running status or enter access customer setting new state (off-mode or other patterns).

In an optional specific example, the second temperature of the water circulation heat exchange device porch of the above-mentioned determination air-conditioning is It is no to be more than or equal to the 5th preset value, can include：In the 8th preset duration (for example：Preset time t 8) in, to the air-conditioning The second temperature of water circulation heat exchange device porch whether be determined more than or equal to the 5th preset value.

Wherein, the 8th preset duration, can include：The 8th of continuous 8th preset duration or intermittent integration is pre- If duration.

Thus, judged by the timing to anti-freeze exit criteria under the second state or the third state, judged result reliability, Precisely.

It is alternatively possible to when the second temperature is less than five preset value, make the air-conditioning maintain described second The anti-freeze protected mode being adapted to the anti-freeze protection act under state or the third state.

For example：Perform air supply pattern operation the second state under shutdown or disorderly closedown the third state under with During upper anti-freeze protection act, if three above condition is all unsatisfactory for, anti-freeze protection act is continued executing with.

Thus, during being performed by the anti-freeze protection act under the second state or the third state, judge whether to reach Anti-freeze exit criteria under the state, and then can be provided precisely and reliable foundation to exit anti-freeze protected mode, people Propertyization is good.

Step S520, the anti-freeze exit criteria, and/or the air-conditioning hair under the state are reached when the air-conditioning During the conversion of the life state, make the anti-freeze protected mode that the air-conditioning is exited under the state.

For example：After quick raising heat exchange temperature, unit is exited anti-freeze and protect.

Thus, during by the anti-freeze protection act under air-conditioning execution corresponding state, when air-conditioning reaches corresponding state Under anti-freeze exit criteria or air-conditioning generating state change when, anti-freeze protected mode is exited, so that air-conditioning is when suitable Between exit protection, it is ensured that air-conditioning equipment reliability service.

In an optional embodiment, can also include：The processing procedure exited after anti-freeze protected mode.

In an optional example, after making the anti-freeze protected mode that the air-conditioning is exited under the state, can So that the air-conditioning recovers the state or maintains the conversion of the state.

Alternatively, when the state can include the first state or second state, the conversion of the state, Can include：Shutdown or conversion operation pattern are (for example：In the first state, heating mode or air supply pattern etc. are converted to. And for example：In the second condition, refrigeration mode, heating mode etc. are converted to).

Alternatively, when the state can include the third state, the conversion of the state can include：Start, Or enter operational mode (for example after fault recovery：Machine halt trouble recovers, and unit enters running status).Wherein, fault recovery Enter operational mode afterwards, can be specifically：After fault recovery in disorderly closedown, operational mode is entered by disorderly closedown.

Thus, by exiting after anti-freeze protected mode, recover former operation or run by the state of user's new settings, Flexibility is good, and hommization is excellent.

In an optional embodiment, can also include：The entry and exit of the anti-freeze protected mode based on air-conditioning, The man-machine interactive operation between air-conditioning and user can be carried out.

It is alternatively possible to work as the anti-freeze protective condition, the air-conditioning that the air-conditioning reached under the state reach When the anti-freeze exit criteria, the air-conditioning under the state occur at least one of conversion of the state, shown Show, remind and default user client communication at least one interactive operation.

For example：Remote controller displays failure code.

Thus, it is possible to be based on the entry and exit of anti-freeze protected mode, man-machine interaction is carried out, can more facilitate user Operation of air conditioner situation is understood in time, and Consumer's Experience is more preferable.

Through substantial amounts of verification experimental verification, using the technical scheme of the present embodiment, by rational double heat source air conditioner source pumps Anti-freeze protection control method, unit is protected in the suitable time, it is to avoid air-conditioning equipment damage.

Embodiments in accordance with the present invention, additionally provide a kind of control device of air-conditioning of control method corresponding to air-conditioning. The structural representation of one embodiment of device of the invention shown in Figure 6.The control device of the air-conditioning can include：It is determined that single Unit 102 and execution unit 104.

In one example, determining unit 102, are determined for the current state of the air-conditioning.Wherein, the shape State, can include：First state, the second state by air supply pattern operation and the shutdown run by refrigeration or dehumidification mode Or any state in the third state of disorderly closedown.The concrete function of the determining unit 102 and treatment are referring to step S110.

In an optional example, execution unit 104, be determined for the air-conditioning whether reach it is pre- under the state If anti-freeze protective condition.The concrete function of the execution unit 104 and treatment are referring to step S120.

Alternatively, execution unit 104, can include：Judge module 1044.

In an optional specific example, judge module 1044 can be used for that when the state described first can be included During state, determine the first temperature at the refrigerant circulation heat exchanger entrance of the air-conditioning (for example：The heat exchange of refrigerant circulation in unit The temperature value T of device porch_Enter) whether less than or equal to the first preset value (for example：Preset temperature value T₁), and/or determine described The second temperature of the water circulation heat exchange device porch of air-conditioning is (for example：Temperature value T in unit at the heat exchanger entrance of water circulation_Water) Whether less than or equal to the second preset value (for example：Preset temperature value T₂)；With when first temperature is less than or equal to described the When one preset value, and/or the second temperature are less than or equal to second preset value, determine that the air-conditioning reaches described first The anti-freeze protective condition under state.

In an optional specific example, judge module 1044 can be also used for when first temperature is more than described the When one preset value and the second temperature are more than second preset value, the air-conditioning is set to maintain the first state.

More alternatively, the execution unit 104, can also include：Time block 1046.Wherein it is determined that the air-conditioning Whether the first temperature at refrigerant circulation heat exchanger entrance is less than or equal to the process of the first preset value, can specifically include：

In a more optional specific example, the time block 1046 is determined for the compressor of the air-conditioning Whether the operation duration after startup reaches the first preset duration (for example：Preset time t 1).The specific work(of the time block 1046 Can and process referring to step S310.

It is described to obtain when the execution unit 104 includes acquisition module 1042 in a more optional specific example Modulus block 1042, can be also used for being obtained when the operation duration reaches first preset duration refrigerant of the air-conditioning First temperature of circulation heat exchanger porch.The concrete function of the acquisition module 1042 and treatment are referring further to step S320.

For example：The time block 1046, can be also used for when the operation duration reaches first preset duration, Start the acquisition module 1042.And by the acquisition module 1042, obtain the refrigerant circulation heat exchanger entrance of the air-conditioning First temperature at place.

Specifically, example shown in Figure 7, the acquisition module 1042 can include：First temperature sensor 10422.The acquisition module 1042, can be also used for obtaining the TEMP set by the refrigerant circulation heat exchanger entrance First temperature that device (i.e. the first temperature sensor 10422) is detected.

In a more optional specific example, the judge module 1044, can be also used for first temperature whether It is determined less than or equal to first preset value.The concrete function of the judge module 1044 and treatment are referring further to step S330。

Specifically, the judge module 1044, can be also used in the 3rd preset duration (for example：Preset time t 2) in, Whether first temperature is determined less than or equal to first preset value.

For example：The judge module 1044, can be also used for coordinating with the time block 1046, with the timing mould In the 3rd preset duration that block 1046 is timed, whether first temperature is carried out less than or equal to first preset value It is determined that.

More alternatively, when the execution unit 104 includes time block 1046, the water circulation heat exchange of the air-conditioning is determined Whether the second temperature of device porch is less than or equal to the process of the second preset value, can specifically include：

In a more optional specific example, the time block 1046 can be also used for determining the compression of the air-conditioning Whether the operation duration after machine starts reaches the second preset duration (for example：Preset time t 3).The time block 1046 it is specific Function and treatment are referring further to step S410.

In a more optional specific example, the acquisition module 1042 can be also used for being reached when the operation duration During second preset duration, the second temperature of the water circulation heat exchange device porch of the air-conditioning is obtained.The acquisition module 1042 concrete function and treatment are referring further to step S420.

For example：The time block 1046, can be also used for when the operation duration reaches second preset duration, Start the acquisition module 1042.And by the acquisition module 1042, obtain the water circulation heat exchange device porch of the air-conditioning The second temperature.

Specifically, example shown in Figure 7, the acquisition module 1042 can also include：Second temperature sensor 10424.The acquisition module 1042, can be also used for obtaining the temperature sensor set by the water circulation heat exchange device porch The second temperature that (i.e. second temperature sensor 10424) is detected.

In a more optional specific example, the judge module 1044, can be also used for the second temperature whether It is determined less than or equal to second preset value.The concrete function of the judge module 1044 and treatment are referring further to step S430。

Specifically, the judge module 1044, can be also used in the 4th preset duration (for example：Preset time t 4) in, Whether the second temperature is determined less than or equal to second preset value.

For example：The judge module 1044, can be also used for coordinating with the time block 1046, with the timing mould In the 4th preset duration that block 1046 is timed, whether the second temperature is carried out less than or equal to second preset value It is determined that.

Alternatively, execution unit 104, can also include：Acquisition module 1042.

In an optional specific example, acquisition module 1042 can be used for that when the state described second can be included When state or the third state, the temperature for obtaining the air-conditioning local environment be the 3rd temperature (for example：The environment temperature of unit T_Ring).The concrete function of the acquisition module 1042 and treatment are referring to step S210.

Specifically, example shown in Figure 7, the acquisition module 1042 can also include：Three-temperature sensor 10426.The acquisition module 1042, can be also used for obtaining by being adapted to the temperature sensor the (the i.e. the 3rd for setting with the air-conditioning Temperature sensor 10426) the 3rd temperature that detects.

In an optional specific example, whether the judge module 1044 can be also used for determining the 3rd temperature Less than or equal to the 3rd preset value (for example：Preset temperature value T₅) and determine the water circulation heat exchange device porch of the air-conditioning Whether second temperature is less than or equal to the second preset value；With when the 3rd temperature less than or equal to the 3rd preset value and When the second temperature is less than or equal to the second preset value, determine that the air-conditioning reaches second state or the third state Under the anti-freeze protective condition.The concrete function of the judge module 1044 and treatment are referring further to step S220.

In an optional specific example, the judge module 1044 can be also used for being more than institute when the 3rd temperature When stating the 3rd preset value, and/or the second temperature more than second preset value, the air-conditioning is set to maintain second state Or the third state.

Specifically, the judge module 1044, can be also used in the 5th preset duration (for example：Preset time t 7) in, It is described to whether whether the 3rd temperature be less than or equal to less than or equal to the 3rd preset value and the second temperature Second preset value is determined.

For example：The judge module 1044, can be also used for coordinating with the time block 1046, with the timing mould In the 5th preset duration that block 1046 is timed, to the 3rd temperature whether less than or equal to the 3rd preset value, with And whether the second temperature is determined less than or equal to second preset value.

In an optional example, the execution unit 104 can be also used for being reached under the state when the air-conditioning During the anti-freeze protective condition, the air-conditioning is set to perform default anti-freeze protection act under the state, so that the sky Transfer in the anti-freeze protected mode being adapted to the anti-freeze protection act under the state.Wherein, the anti-freeze protection Action, can include：The engineering water valve that opening is adapted to the air-conditioning.The concrete function of the execution unit 104 and treatment are also joined See step S130.

Alternatively, the execution unit 104, can be also used for when the air-conditioning be not up to it is described antifreeze under the state During knot protective condition, the air-conditioning is set to maintain the state.

In an optional specific example, when the state can include the first state, the anti-freeze protection Action can also include：Make the operation under the blower fan maintenance first state of the air-conditioning, and close the electronics of the air-conditioning Expansion valve.

In an optional specific example, when the state can include second state, the anti-freeze protection Action can also include：Make the operation under blower fan maintenance second state of the air-conditioning.

In an optional example, the execution unit 104 can be also used for making the air-conditioning perform under the state The anti-freeze protection act during, determine the air-conditioning whether reach the state under default anti-freeze exit bar Whether part, and/or the determination air-conditioning there is the conversion of the state.The concrete function of the execution unit 104 and treatment are also joined See step S510.

Alternatively, when the execution unit 104 can include judge module 1044, the judge module 1044 may be used also For when the state can include the first state, determining the at the refrigerant circulation heat exchanger entrance of the air-conditioning Whether more than or equal to the 4th preset value (for example one temperature：Preset temperature value T₃) and the air-conditioning water circulation heat exchange device Whether more than or equal to the 5th preset value (for example the second temperature of porch：Preset temperature value T₄)；With when first temperature When being more than or equal to five preset value more than or equal to the 4th preset value and the second temperature, the sky is determined Tune reaches the anti-freeze exit criteria under the first state.

In an optional specific example, the judging unit can be also used in the 6th preset duration (for example：It is default Time t5) in, whether the 4th preset value is more than or equal to the first temperature at the refrigerant circulation heat exchanger entrance of the air-conditioning It is determined.

For example：When the execution unit 104 can also include time block 1046, the judge module 1044 may be used also It is right with the 6th preset duration that is timed in the time block 1046 for coordinating with the time block 1046 Whether the first temperature at the refrigerant circulation heat exchanger entrance of the air-conditioning is determined more than or equal to the 4th preset value.

In an optional specific example, the judging unit can be also used in the 7th preset duration (for example：It is default Time t6) in, whether the second temperature to the water circulation heat exchange device porch of the air-conditioning is entered more than or equal to the 5th preset value Row determines.

For example：When the execution unit 104 can also include time block 1046, the judge module 1044 may be used also It is right with the 7th preset duration that is timed in the time block 1046 for coordinating with the time block 1046 Whether the second temperature of the water circulation heat exchange device porch of the air-conditioning is determined more than or equal to the 5th preset value.

In an optional specific example, the judge module 1044 can be also used for being less than institute when first temperature When stating the 4th preset value, and/or the second temperature less than five preset value, the air-conditioning is set to maintain the first state Under the anti-freeze protected mode that is adapted to the anti-freeze protection act.

Alternatively, the judge module 1044, can be also used for that when the state second state or institute can be included When stating the third state, determine whether the second temperature of the water circulation heat exchange device porch of the air-conditioning is preset more than or equal to the 5th Value；With when the second temperature be more than or equal to five preset value when, determine the air-conditioning reach second state or The anti-freeze exit criteria under the third state.

In an optional specific example, the judging unit can be also used in the 8th preset duration (for example：It is default Time t8) in, whether the second temperature to the water circulation heat exchange device porch of the air-conditioning is entered more than or equal to the 5th preset value Row determines.

For example：When the execution unit 104 can also include time block 1046, the judge module 1044 may be used also It is right with the 8th preset duration that is timed in the time block 1046 for coordinating with the time block 1046 Whether the second temperature of the water circulation heat exchange device porch of the air-conditioning is determined more than or equal to the 5th preset value.

In an optional specific example, the judge module 1044 can be also used for being less than institute when the second temperature When stating five preset values, make the air-conditioning maintain under second state or the third state with the anti-freeze protection act The anti-freeze protected mode of adaptation.

In an optional example, the execution unit 104 can be also used for being reached under the state when the air-conditioning When the anti-freeze exit criteria, and/or the air-conditioning occur the conversion of the state, the air-conditioning is set to exit under the state The anti-freeze protected mode.The concrete function of the execution unit 104 and treatment are referring further to step S520.

In an optional example, the execution unit 104 can be also used for making the air-conditioning exit under the state After the anti-freeze protected mode, the air-conditioning is recovered the state or maintain the conversion of the state.

In an optional embodiment, can also include：Interactive unit 106；By interactive unit 106, can be based on The entry and exit of the anti-freeze protected mode of air-conditioning, can carry out the man-machine interactive operation between air-conditioning and user.

In an optional example, interactive unit 106, can be used for when the air-conditioning reach it is described anti-under the state Freeze protection condition, the air-conditioning reach the anti-freeze exit criteria, the air-conditioning generation state under the state At least one of conversion when, shown, remind and default user client communication at least one interactive operation.

For example：Remote controller displays failure code.

The treatment and function realized by the device of the present embodiment essentially correspond to method of the earlier figures 1 shown in Fig. 5 Embodiment, principle and example, therefore not detailed part in the description of the present embodiment may refer to mutually speaking on somebody's behalf in previous embodiment It is bright, will not be described here.

Through substantial amounts of verification experimental verification, using technical scheme, by rational double heat source air conditioner source pumps Anti-freeze protects control method, unit is exited protection in the suitable time, it is ensured that air-conditioning equipment reliability service.

Embodiments in accordance with the present invention, additionally provide a kind of air-conditioning of the control device corresponding to air-conditioning.The air-conditioning can be with Including：The control device of above-described air-conditioning.

In one example, double heat source air conditioner source pumps are illustrated first, it may occur that several situations freezed, so as to In the technical scheme for more fully understanding the application.

Alternatively, a kind of situation, Ke Yishi：Because the water- to-water heat exchanger of double heat source air conditioner source pumps only has hot water circuit not have There is circulating chilled water, so freezing season, water- to-water heat exchanger is not involved in refrigerating operaton, it should the water in water- to-water heat exchanger of draining, but not Exclude the situation of some engineering not drainings, that is, freeze season when water- to-water heat exchanger in also have accumulate recirculated water.In this case, when Unit refrigerating operaton, when leaving air temp is too low, cold wind can blow to water- to-water heat exchanger surface, i.e., refrigerant heat exchanger surface knot can occur The situation of frost, water- to-water heat exchanger inside water freezing, in now needing to melt refrigerant heat exchanger surface frost and improving water- to-water heat exchanger Water temperature.

Alternatively, another situation, Ke Yishi：When winter environment temperature is very low, the water in water- to-water heat exchanger is by ring The risk that border cooling can also freeze.

In an optional example, example shown in Figure 8, a kind of technical scheme of the application, i.e., air-conditioning is antifreeze The process of knot protection control, can include：

Step 1, judge the current state of unit, if be refrigeration or dehumidification mode operation, air supply pattern operation, shutdown or One kind in disorderly closedown.

Step 2, according to the current state of unit, carry out the anti-freeze protection control under every kind of state.

In an optional specific example, if unit is refrigeration or dehumidification mode operation, make the following judgment：

First, the compressor start t1 times, and continuous t2 time detectings are to T_Enter≤ preset temperature T₁。

Second, the compressor start t3 times, and continuous t4 time detectings are to T_Water≤ preset temperature T₂。

Alternatively, if meeting the either condition in two above condition, unit is protected into anti-freeze, remote controller displays Failure code, unit performs the action of following anti-freeze protection.Or, if two above condition is all unsatisfactory for, continue to freeze Or dehumidification mode operation.

Alternatively, anti-freeze protection act, can include：Fan part maintains original running status, and electric expansion valve is closed Close, engineering water valve is opened.

Wherein, fan part maintains running status, and can maintain the circulation of air makes heat exchange temperature raise faster.Electronics is swollen Swollen valve is closed, and the refrigerant of more low temperature can be avoided to enter heat exchanger.Engineering water valve is opened, can cause water in heat exchanger and Water in pipeline carries out heat transfer or water circulation, improves heat exchange temperature.

In a more optional specific example, during above anti-freeze protection act is performed, while making following judgement：

First, continuous t5 time detectings are to T_Enter>=preset temperature T₃, and continuous t6 time detectings are to T_Water≥T₄。

Second, user carries out power-off operation or is transferred to other patterns (heat, isotype of blowing).

More alternatively, if meeting the either condition in two above condition, unit exits anti-freeze protection, before recovery Running status enters the new state (off-mode or other patterns) that access customer sets.Or, if two above condition is not Meet, then continue executing with anti-freeze protection act.

In an optional specific example, if unit runs for air supply pattern, judge whether to meet：The continuous t7 times are examined Measure T_Ring≤ preset temperature T₅And T_Water≤ preset temperature T₂.If so, then unit is protected into anti-freeze, remote controller displays failure generation Code, unit performs the action of following anti-freeze protection；If it is not, then continuing air supply pattern operation.

Alternatively, anti-freeze protection act：Fan part maintains original running status, and engineering water valve is opened.

First, continuous t8 time detectings are to T_Water>=preset temperature T₄。

Second, user carries out power-off operation.

Third, user is transferred to other patterns (freeze, heat isotype).

More alternatively, if meeting the either condition in three above condition, unit exits anti-freeze protection, before recovery Running status enters the new state (off-mode or other patterns) that access customer sets.Or, if three above condition is not Meet, then continue executing with anti-freeze protection act.

In an optional specific example, if unit is off-mode or disorderly closedown state, judge whether to meet： Continuous t7 time detectings are to T_Ring≤ preset temperature T₅And T_Water≤ preset temperature T₂.If so, then unit is protected into anti-freeze, remote control Device shows failure code, and unit performs the action of following anti-freeze protection.Or, if it is not, then maintaining current state.

Alternatively, anti-freeze protection act：Engineering water valve is opened.

First, continuous t8 time detectings are to T_Water>=preset temperature T₄。

Second, user boots up operation.

Third, machine halt trouble recovers, unit enters running status.

More alternatively, if meeting the either condition in three above condition, unit exits anti-freeze protection, recovers shutdown State enters running status.Or, if being all unsatisfactory for, continue executing with anti-freeze protection act.

Wherein, in the embodiment above, time t1, t2, t3, t4, t5, t6, t7, t8, is program Preset Time；Temperature T₁、T₂、T₃、T₄、T₅, it is program preset temperature value；Temperature T_EnterIt is the temperature set at the heat exchanger entrance of refrigerant circulation in unit The temperature value of degree sensor detection；Temperature T_WaterFor at the heat exchanger entrance of water circulation in unit set temperature sensor detection Temperature value；Temperature T_RingTo be used to detect the temperature value of the temperature sensor detection of environment temperature in unit.

For example：Because the unit that the application is related to is a kind of indoor set, the water circulation heat exchange device included in indoor set has temperature There is the possibility of bursting by freezing when degree is very low.So, environment temperature herein can refer to the environment temperature of indoor set.

The treatment and function realized by the air-conditioning of the present embodiment essentially correspond to device of the earlier figures 6 shown in Fig. 7 Embodiment, principle and example, therefore not detailed part in the description of the present embodiment may refer to mutually speaking on somebody's behalf in previous embodiment It is bright, will not be described here.

Through substantial amounts of verification experimental verification, using technical scheme, according to the state of double heat source air conditioner source pumps, have Distinctively enter anti-freeze to protect, and perform different anti-freeze protection controls, quickly to improve heat exchange temperature, so that machine Group exits anti-freeze protection.

To sum up, skilled addressee readily understands that, on the premise of not conflicting, above-mentioned each advantageous manner can from Combined by ground, be superimposed.

Embodiments of the invention are the foregoing is only, is not intended to limit the invention, for those skilled in the art For member, the present invention can have various modifications and variations.All any modifications within the spirit and principles in the present invention, made, Equivalent, improvement etc., should be included within scope of the presently claimed invention.

Claims

1. a kind of control method of air-conditioning, it is characterised in that including：

Determine the current state of the air-conditioning；Wherein, the state, including：By refrigeration or dehumidification mode run first state, Any state in the second state and the third state of shutdown or disorderly closedown run by air supply pattern；

Determine whether the air-conditioning reaches default anti-freeze protective condition under the state；

When the air-conditioning reaches the anti-freeze protective condition under the state, perform the air-conditioning pre- under the state If anti-freeze protection act so that the air-conditioning enters the anti-freeze that is adapted to the anti-freeze protection act under the state Protected mode；Wherein, the anti-freeze protection act, including：The engineering water valve that opening is adapted to the air-conditioning.

2. method according to claim 1, it is characterised in that determine whether the air-conditioning reaches default under the state Anti-freeze protective condition, including：

When the state includes the first state,

Whether the first temperature at the refrigerant circulation heat exchanger entrance of the air-conditioning is determined less than or equal to the first preset value, and/ Or determine whether the second temperature of the water circulation heat exchange device porch of the air-conditioning is less than or equal to the second preset value；

First preset value, and/or the second temperature are less than or equal to less than or equal to described with when first temperature During the second preset value, determine that the air-conditioning reaches the anti-freeze protective condition under the first state；

And/or,

When the state includes second state or the third state,

Obtain temperature i.e. the 3rd temperature of the air-conditioning local environment；

Determine whether the 3rd temperature is less than or equal to the 3rd preset value and determines the water circulation heat exchange device entrance of the air-conditioning Whether the second temperature at place is less than or equal to the second preset value；

With when the 3rd temperature is less than or equal to the 3rd preset value and the second temperature is default less than or equal to second During value, determine that the air-conditioning reaches the anti-freeze protective condition under second state or the third state.

3. method according to claim 2, it is characterised in that wherein,

Determine the first temperature at the refrigerant circulation heat exchanger entrance of the air-conditioning whether less than or equal to the first preset value, bag Include：

Determine whether the operation duration after the compressor start of the air-conditioning reaches the first preset duration；

When the operation duration reaches first preset duration, obtain at the refrigerant circulation heat exchanger entrance of the air-conditioning First temperature, and whether first temperature is determined less than or equal to first preset value；

And/or,

Whether the second temperature of water circulation heat exchange device porch of the air-conditioning is determined less than or equal to the second preset value, including：

Determine whether the operation duration after the compressor start of the air-conditioning reaches the second preset duration；

When the operation duration reaches second preset duration, the institute of the water circulation heat exchange device porch of the air-conditioning is obtained Second temperature is stated, and whether the second temperature is determined less than or equal to second preset value.

4. method according to claim 3, it is characterised in that wherein,

First temperature at the refrigerant circulation heat exchanger entrance of the air-conditioning is obtained, including：

Obtain first temperature that the temperature sensor set by the refrigerant circulation heat exchanger entrance is detected；

And/or,

And whether first temperature is determined less than or equal to first preset value, including：

In the 3rd preset duration, whether first temperature is determined less than or equal to first preset value；

And/or,

The second temperature of the water circulation heat exchange device porch of the air-conditioning is obtained, including：

Obtain the second temperature that the temperature sensor set by the water circulation heat exchange device porch is detected；

And/or,

And whether the second temperature is determined less than or equal to second preset value, including：

In the 4th preset duration, whether the second temperature is determined less than or equal to second preset value；

And/or,

Temperature i.e. the 3rd temperature of the air-conditioning local environment is obtained, including：

Obtain by being adapted to the 3rd temperature that the temperature sensor for setting is detected with the air-conditioning local environment；

And/or,

Determine whether the 3rd temperature is less than or equal to the 3rd preset value and determines the water circulation heat exchange device entrance of the air-conditioning Whether the second temperature at place is less than or equal to the second preset value, including：

In the 5th preset duration, whether the 3rd preset value and described second are less than or equal to the 3rd temperature Whether temperature is determined less than or equal to second preset value.

5. according to the method that one of claim 1-4 is described, it is characterised in that wherein,

When the state includes the first state, the anti-freeze protection act also includes：Tie up the blower fan of the air-conditioning The operation under the first state is held, and closes the electric expansion valve of the air-conditioning；

And/or,

When the state includes second state, the anti-freeze protection act also includes：Tie up the blower fan of the air-conditioning Hold the operation under second state.

6. according to the method that one of claim 1-5 is described, it is characterised in that also include：

During the air-conditioning is performed the anti-freeze protection act under the state, determine whether the air-conditioning reaches Whether default anti-freeze exit criteria, and/or the determination air-conditioning there is the conversion of the state under the state；

When the anti-freeze exit criteria, and/or the air-conditioning that the air-conditioning is reached under the state occur the state During conversion, make the anti-freeze protected mode that the air-conditioning is exited under the state.

7. method according to claim 6, it is characterised in that determine whether the air-conditioning reaches default under the state Anti-freeze exit criteria, including：

When the state includes the first state,

Determine the first temperature at the refrigerant circulation heat exchanger entrance of the air-conditioning whether more than or equal to the 4th preset value and Whether the second temperature of the water circulation heat exchange device porch of the air-conditioning is more than or equal to the 5th preset value；

With when first temperature is more than or equal to the 4th preset value and the second temperature is more than or equal to the described 5th During preset value, determine that the air-conditioning reaches the anti-freeze exit criteria under the first state；

And/or,

When the state includes second state or the third state, the water circulation heat exchange device entrance of the air-conditioning is determined Whether the second temperature at place is more than or equal to the 5th preset value；

With when the second temperature be more than or equal to five preset value when, determine the air-conditioning reach second state or The anti-freeze exit criteria under the third state.

8. method according to claim 7, it is characterised in that wherein,

Determine the first temperature at the refrigerant circulation heat exchanger entrance of the air-conditioning whether more than or equal to the 4th preset value and Whether the second temperature of the water circulation heat exchange device porch of the air-conditioning is more than or equal to the 5th preset value, including：

In the 6th preset duration, whether the first temperature at the refrigerant circulation heat exchanger entrance of the air-conditioning is more than or equal to 4th preset value is determined；And/or,

In the 7th preset duration, to the second temperature of the water circulation heat exchange device porch of the air-conditioning whether more than or equal to the Five preset values are determined；

And/or,

Whether the second temperature of water circulation heat exchange device porch of the air-conditioning is determined more than or equal to the 5th preset value, including：

In the 8th preset duration, to the second temperature of the water circulation heat exchange device porch of the air-conditioning whether more than or equal to the Five preset values are determined.

9. according to the method that one of claim 6-8 is described, it is characterised in that also include：

After making the anti-freeze protected mode that the air-conditioning is exited under the state, make the air-conditioning recover the state, Or maintain the conversion of the state；Wherein,

When the state includes the first state or second state, the conversion of the state, including：Shutdown or Conversion operation pattern；And/or,

When the state includes the third state, the conversion of the state, including：Enter after start or fault recovery Operational mode；

And/or,

Reached when the air-conditioning described under the anti-freeze protective condition under the state, the air-conditioning reach the state When anti-freeze exit criteria, the air-conditioning occur at least one of conversion of the state, shown, reminded and default At least one interactive operation of user client communication；

And/or,

The air-conditioning, including：Double heat source air conditioner source pumps.

10. a kind of control device of air-conditioning, it is characterised in that including：

Determining unit, the state current for determining the air-conditioning；Wherein, the state, including：Transported by refrigeration or dehumidification mode Any shape in the third state of capable first state, the second state by air supply pattern operation and shutdown or disorderly closedown State；

Execution unit, for determining whether the air-conditioning reaches default anti-freeze protective condition under the state；

The execution unit, is additionally operable to, when the air-conditioning reaches the anti-freeze protective condition under the state, make described Air-conditioning performs default anti-freeze protection act under the state so that the air-conditioning enter under the state with the anti-freeze The anti-freeze protected mode of protection act adaptation；Wherein, the anti-freeze protection act, including：Opening is adapted to the air-conditioning Engineering water valve.

11. devices according to claim 10, it is characterised in that execution unit, including：

Judge module, for when the state includes the first state, determining that the refrigerant circulation heat exchanger of the air-conditioning enters Whether the first temperature at mouthful is less than or equal to the first preset value, and/or the water circulation heat exchange device porch for determining the air-conditioning Second temperature whether be less than or equal to the second preset value；

And/or,

Acquisition module, for when the state includes second state or the third state, obtaining residing for the air-conditioning The temperature of environment is the 3rd temperature；

The judge module, is additionally operable to determine whether the 3rd temperature is less than or equal to the 3rd preset value and determines the sky Whether the second temperature of the water circulation heat exchange device porch of tune is less than or equal to the second preset value；

12. devices according to claim 11, it is characterised in that the execution unit, also include：Time block；Wherein,

The time block, for the operation duration after the compressor start for determining the air-conditioning whether reach first it is default when It is long；And,

The acquisition module, is additionally operable to, when the operation duration reaches first preset duration, obtain the cold of the air-conditioning First temperature of matchmaker's circulation heat exchanger porch；And,

Whether the judge module, is additionally operable to be determined first temperature less than or equal to first preset value；

And/or,

The time block, be additionally operable to determine the operation duration after the compressor start of the air-conditioning whether reach second it is default when It is long；And,

The acquisition module, is additionally operable to be obtained when the operation duration reaches second preset duration water of the air-conditioning The second temperature of circulation heat exchanger porch；And,

Whether the judge module, is additionally operable to be determined the second temperature less than or equal to second preset value.

13. devices according to claim 12, it is characterised in that wherein,

The acquisition module, including：

First temperature sensor；The acquisition module, is additionally operable to obtain the temperature set by the refrigerant circulation heat exchanger entrance First temperature that degree sensor is detected；

And/or,

The judge module, is additionally operable in the 3rd preset duration, and whether described first is less than or equal to first temperature Preset value is determined；

And/or,

The acquisition module, also includes：

Second temperature sensor；The acquisition module, is additionally operable to obtain the temperature set by the water circulation heat exchange device porch The second temperature that sensor is detected；

And/or,

The judge module, is additionally operable in the 4th preset duration, and whether described second is less than or equal to the second temperature Preset value is determined；

And/or,

The acquisition module, also includes：

Three-temperature sensor；The acquisition module, is additionally operable to obtain by being adapted to the temperature for setting with the air-conditioning local environment The 3rd temperature that sensor is detected；

And/or,

The judge module, is additionally operable in the 5th preset duration, and whether the described 3rd is less than or equal to the 3rd temperature Whether preset value and the second temperature are determined less than or equal to second preset value.

14. according to one of claim 10-13 described device, it is characterised in that wherein,

And/or,

15. according to one of claim 10-14 described device, it is characterised in that also include：

The execution unit, is additionally operable to during the air-conditioning is performed the anti-freeze protection act under the state, Determine whether the air-conditioning reaches under the state default anti-freeze exit criteria, and/or determine whether the air-conditioning occurs The conversion of the state；And,

16. devices according to claim 15, it is characterised in that when the execution unit includes judge module,

The judge module, is additionally operable to, when the state includes the first state, determine that the refrigerant circulation of the air-conditioning is changed Whether the first temperature of hot device porch is more than or equal to the 4th preset value and the water circulation heat exchange device porch of the air-conditioning Second temperature whether be more than or equal to the 5th preset value；

And/or,

The judge module, is additionally operable to, when the state includes second state or the third state, determine the sky Whether the second temperature of the water circulation heat exchange device porch of tune is more than or equal to the 5th preset value；

17. devices according to claim 16, it is characterised in that wherein,

The judging unit, is additionally operable in the 6th preset duration, at the refrigerant circulation heat exchanger entrance of the air-conditioning Whether one temperature is determined more than or equal to the 4th preset value；

And/or,

The judging unit, is additionally operable in the 7th preset duration, to the second of the water circulation heat exchange device porch of the air-conditioning Whether temperature is determined more than or equal to the 5th preset value；

And/or,

The judging unit, is additionally operable in the 8th preset duration, to the second of the water circulation heat exchange device porch of the air-conditioning Whether temperature is determined more than or equal to the 5th preset value.

18. according to one of claim 15-17 described device, it is characterised in that also include：

The execution unit, is additionally operable to after the anti-freeze protected mode for making the air-conditioning exit under the state, makes institute Air-conditioning is stated to recover the state or maintain the conversion of the state；Wherein,

And/or,

Interactive unit, institute is reached for reaching the anti-freeze protective condition under the state, the air-conditioning when the air-conditioning When stating the anti-freeze exit criteria under state, the air-conditioning at least one of conversion of the state occurring, shown, Prompting and at least one interactive operation of default user client communication；

And/or,

A kind of 19. air-conditionings, it is characterised in that including：The control device of the air-conditioning as described in claim 10-18 is any.