CN105526683A - Control method and device of air conditioning system - Google Patents
Control method and device of air conditioning system Download PDFInfo
- Publication number
- CN105526683A CN105526683A CN201610093816.2A CN201610093816A CN105526683A CN 105526683 A CN105526683 A CN 105526683A CN 201610093816 A CN201610093816 A CN 201610093816A CN 105526683 A CN105526683 A CN 105526683A
- Authority
- CN
- China
- Prior art keywords
- enthalpy compressor
- spray enthalpy
- temperature
- compressor
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004378 air conditioning Methods 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000004804 winding Methods 0.000 claims abstract description 55
- 238000010438 heat treatment Methods 0.000 claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 239000007921 spray Substances 0.000 claims description 160
- 230000008569 process Effects 0.000 claims description 25
- 230000001143 conditioned effect Effects 0.000 claims description 22
- 238000005507 spraying Methods 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 10
- 101100465000 Mus musculus Prag1 gene Proteins 0.000 claims description 3
- 230000006835 compression Effects 0.000 abstract description 35
- 238000007906 compression Methods 0.000 abstract description 35
- 230000003993 interaction Effects 0.000 abstract description 5
- 238000002347 injection Methods 0.000 abstract 6
- 239000007924 injection Substances 0.000 abstract 6
- 238000009825 accumulation Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 65
- 239000003507 refrigerant Substances 0.000 description 24
- 239000010687 lubricating oil Substances 0.000 description 18
- 241000521257 Hydrops Species 0.000 description 11
- 206010030113 Oedema Diseases 0.000 description 11
- 235000003642 hunger Nutrition 0.000 description 11
- 230000037351 starvation Effects 0.000 description 11
- 230000008859 change Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/26—Disposition of valves, e.g. of on-off valves or flow control valves of fluid flow reversing valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/031—Sensor arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application provides a control method and a control device of an air conditioning system, which are applied to a controller of the air conditioning system, wherein the method comprises the following steps: before a heating starting instruction is received, continuously acquiring the shell temperature of an enthalpy injection compressor by using a temperature sensor arranged on a shell of the enthalpy injection compressor; under the condition that the temperature of the shell is lower than a first temperature value, a preset current is transmitted to a stator winding in the enthalpy injection compressor; stopping transmitting the preset current to a stator winding in the enthalpy injection compressor under the condition that the shell temperature is higher than a second temperature value; wherein the first temperature value is less than the second temperature value. Because the enthalpy-injection compressor comprises the stator winding, the oil pool, the compression cavity and the shell, and all the components are close to each other, the heat generated by the stator winding can be transferred to the oil pool, the compression cavity and the shell through the heat interaction. Therefore, the problems of low-temperature oil shortage and low-temperature liquid accumulation of the enthalpy-injection compressor can be solved by adopting a stator winding heating mode.
Description
Technical field
The application relates to technical field of automation, particularly relates to a kind of control method and device of air-conditioning system.
Background technology
Generally speaking, air conditioner structure is primarily of being arranged on outdoor outer machine and being arranged on machine two parts composition in indoor, outer owner will comprise compressor, oil eliminator, gas-liquid separator and outdoor heat exchanger (also claiming condenser), interior owner will comprise indoor heat exchanger (also claiming evaporimeter), and in machine and interior machine, circulation has cold-producing medium outside.Cold-producing medium can carry out the conversion (gaseous state or liquid state) of different shape outside between machine and interior machine, thus the object realizing refrigeration or heat.
Because outer machine is arranged on outdoor, beyond machine easily by the impact of ambient temperature.When ambient temperature drops to below-20 DEG C, the gaseous refrigerant liquefy cold-producing medium in compressor can be caused, this causes compressor operationally can compressed liquid cold-producing medium, and occurs the problem (i.e. low temperature hydrops problem) that compression chamber is impaired.
Further, because ambient temperature is lower, cause the lubricating oil viscosity in compressor in oil sump to increase, this causes compressor oil-supplying obstructed, may cause compressor in running, burn out the problem (i.e. low temperature oil starvation problem) of compressor because of oil starvation.
In addition, because ambient temperature reduces, the pressure of inspiration(Pi) of compressor can be caused to reduce, when suction pressure of compressor reduces, compression mechanism heat can be caused on the low side, and then cause compressor to occur heating the problem of overlong time.
Given this, generally, air-conditioning system can only heat under the environment more than-20 DEG C, and when ambient temperature is lower than-20 degrees Celsius, air-conditioning system possibly cannot normally work.But territory of use gets more and more along with air-conditioning, using air-condition has been the problem that must solve at low ambient temperatures.
Therefore, need a kind of method now, to solve air-conditioning system because of the low problem of ambient temperature is lower, cause low temperature hydrops, low temperature oil starvation and low-temperature heating capacity, thus control air-conditioning system and normally work.
Summary of the invention
Present inventor finds in research process: original compressor is replaced with spray enthalpy compressor, utilize the air-conditioning system comprising spray enthalpy compressor, can solve air-conditioning system when ambient temperature is lower, the low problem of the low-temperature heating capacity occurred.
Air-conditioning system after improvement, can press position to introduce gaseous refrigerant in spray enthalpy compressor, thus improves spray enthalpy compressor air-discharging amount, high pressure and delivery temperature, the heating capacity under worst cold case is had to the lifting of 25-30%.Improve the specific works principle of heating capacity as spray enthalpy compressor, be not the emphasis of the application, do not repeat them here.
Applicant finds: although utilize spray enthalpy compressor can solve the problem of low-temperature heating capacity decay, air-conditioning system still can face the problem to low temperature hydrops and low temperature oil starvation.Therefore, need a kind of method now, so that on the basis of the air-conditioning system of spray enthalpy compressor, solve the problem because of ambient temperature is lower, cause low temperature hydrops and low temperature oil starvation, thus control air-conditioning system and normally work.
In order to solve the problem, the application adopts following technological means:
A control method for air-conditioning system, is applied to the controller of air-conditioning system, and described method comprises:
Before reception heats open command, utilization is arranged on the skin temperature of spraying enthalpy compressor described in the temperature sensor continuous collecting on spray enthalpy compressor case;
When described skin temperature is less than the first temperature value, to the stator winding conveying predetermined current in described spray enthalpy compressor; Wherein, described predetermined current is less than the starting current of described spray enthalpy compressor;
When described skin temperature is greater than the second temperature value, stop carrying described predetermined current to the stator winding in described spray enthalpy compressor;
Wherein, described first temperature value is less than described second temperature value.
Preferably, after reception heats open command, described method also comprises:
Control described air-conditioning system and carry out pre-heat phase;
When meeting pre-conditioned, controlling described air-conditioning system and entering the heating period.
Preferably, the described air-conditioning system of described control is carried out pre-heat phase and is comprised:
Control described spray enthalpy compressor with predeterminated frequency work; Wherein, described predeterminated frequency is less than the commutating frequency of cross valve in described air-conditioning system;
At described spray enthalpy compressor with in the process of described predeterminated frequency work, utilize the first pressure sensor be arranged on described spray enthalpy compressor exhaust pipe, detect the pressure at expulsion of described spray enthalpy compressor;
When described pressure at expulsion is less than the first preset pressure value, utilize the mode controlling low temperature valve and close, increase the unlatching of enthalpy valve, control the cold-producing medium circulation first ring road in described spray enthalpy compressor;
When described pressure at expulsion is greater than the second preset pressure value, utilizes and controlled low temperature valve and open, increase the mode that enthalpy valve cuts out, the cold-producing medium controlled in described spray enthalpy compressor circulates the second loop; Described second preset pressure value is greater than described first preset pressure value;
Wherein, described first ring route spray enthalpy compressor, oil eliminator, cross valve, outdoor heat exchanger, subcooler and increasing enthalpy valve composition; Described second loop forms by spraying enthalpy compressor, oil eliminator, cross valve, outdoor heat exchanger, subcooler and gas-liquid separator.
Preferably, meet pre-conditioned deterministic process to comprise:
Utilize the second pressure sensor be arranged on described spray enthalpy compressor suction duct, detect the pressure of inspiration(Pi) of described spray enthalpy compressor;
When judge described pressure of inspiration(Pi) be greater than described first preset pressure value and described cross low temperature valve open time, determine to meet pre-conditioned.
Preferably, also comprise:
When judge described pressure of inspiration(Pi) be not more than described first preset pressure value or described cross low temperature valve close time, determine not meet pre-conditioned.
A control device for air-conditioning system, is integrated in the controller of air-conditioning system, and described device comprises:
Collecting unit, before heating open command in reception, utilization is arranged on the skin temperature of spraying enthalpy compressor described in the temperature sensor continuous collecting on spray enthalpy compressor case;
Supply unit, for when described skin temperature is less than the first temperature value, to the stator winding conveying predetermined current in described spray enthalpy compressor; Wherein, described predetermined current is less than the starting current of described spray enthalpy compressor;
Stop element, for when described skin temperature is greater than the second temperature value, stops carrying described predetermined current to the stator winding in described spray enthalpy compressor;
Wherein, described first temperature value is less than described second temperature value.
Preferably, also comprise:
Preheating control unit, carrying out pre-heat phase for controlling described air-conditioning system;
Heat control unit, for when meeting pre-conditioned, controlling described air-conditioning system and entering the heating period.
Preferably, preheat control unit described in comprise:
Controlled frequency unit, for controlling described spray enthalpy compressor with predeterminated frequency work; Wherein, described predeterminated frequency is less than the commutating frequency of cross valve in described air-conditioning system;
First detecting unit, at described spray enthalpy compressor with in the process of described predeterminated frequency work, utilize the first pressure sensor of being arranged on described spray enthalpy compressor exhaust pipe, detect the pressure at expulsion of described spray enthalpy compressor;
First control unit, for when described pressure at expulsion is less than the first preset pressure value, utilizes the mode controlling low temperature valve and close, increase the unlatching of enthalpy valve, controls the cold-producing medium circulation first ring road in described spray enthalpy compressor;
Second control unit, for when described pressure at expulsion is greater than the second preset pressure value, utilizes and controlled low temperature valve and open, increase the mode that enthalpy valve cuts out, and the cold-producing medium controlled in described spray enthalpy compressor circulates the second loop; Described second preset pressure value is greater than described first preset pressure value;
Wherein, described first ring route spray enthalpy compressor, oil eliminator, cross valve, outdoor heat exchanger, subcooler and increasing enthalpy valve composition; Described second loop forms by spraying enthalpy compressor, oil eliminator, cross valve, outdoor heat exchanger, subcooler and gas-liquid separator.
Preferably, described heat control unit comprises:
Second detecting unit, for utilizing the second pressure sensor be arranged on described spray enthalpy compressor suction duct, detects the pressure of inspiration(Pi) of described spray enthalpy compressor;
Determining unit, for when judge described pressure of inspiration(Pi) be greater than described first preset pressure value and described cross low temperature valve open time, determine to meet pre-conditioned.
Preferably, also comprise:
Nack unit, for when judge described pressure of inspiration(Pi) be not more than described first preset pressure value or described cross low temperature valve close time, determine not meet pre-conditioned.
Can find out that the application has following beneficial effect by above technological means:
Because the housing of spray enthalpy compressor is also in external environment, so can sensing external environment temperature cold and hot, in addition the change in oil sump and compression chamber is not easy to gather, and therefore, whether the application adopts the change of spray enthalpy compressor case temperature to control to heat stator winding.
The application before reception heats open command, can perform spray enthalpy compressor from heating process.Be: when skin temperature is less than the first temperature value that controller controls the stator winding circulation predetermined current of spray enthalpy compressor from the detailed process of heating.Because predetermined current is less than the starting current of spray enthalpy compressor, so stator winding can not operate.But stator winding can produce heat in the process of circulation predetermined current.
Because spray enthalpy compressor comprises stator winding, oil sump, compression chamber and housing, all parts is close to mutually.Therefore, by thermal interaction, the heat that stator winding produces just can be passed to oil sump, compression chamber and housing, thus the lubricating oil temperature in oil sump is raised, thus lubricating oil viscosity is reduced; Further, the refrigerant temperature in compression chamber also can be made to raise, thus become gaseous refrigerant by liquid refrigerant gradually.Adopt the mode of stator winding heating, the problem of spray enthalpy compressor low temperature oil starvation and low temperature hydrops can be solved.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structure chart of Fig. 1 air-conditioning system disclosed in the embodiment of the present application;
The flow chart of Fig. 2 control method of air-conditioning system disclosed in the embodiment of the present application;
The structure chart of compressor in Fig. 3 air-conditioning system disclosed in the embodiment of the present application;
The flow chart of Fig. 4 control method of another air-conditioning system disclosed in the embodiment of the present application;
The flow chart of Fig. 5 control method of another air-conditioning system disclosed in the embodiment of the present application;
The flow chart of Fig. 6 control method of another air-conditioning system disclosed in the embodiment of the present application;
The structural representation of Fig. 7 control device of air-conditioning system disclosed in the embodiment of the present application;
The structural representation of Fig. 8 control device of another air-conditioning system disclosed in the embodiment of the present application;
The structural representation of Fig. 9 control device of another air-conditioning system disclosed in the embodiment of the present application;
The structural representation of Figure 10 control device of another air-conditioning system disclosed in the embodiment of the present application.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present application, be clearly and completely described the technical scheme in the embodiment of the present application, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.
See Fig. 1, for comprising the air-conditioning system of spray enthalpy compressor.
Air-conditioning system comprises: temperature sensor 101, spray enthalpy compressor 102, increase enthalpy valve 103, oil eliminator 104, cross valve 105, outdoor heat exchanger 106, heat electric expansion valve 107, subcooler electric expansion valve 108, subcooler 109, cross low temperature valve 110, first pressure sensor 111, second pressure sensor 112, gas-liquid separator 113, interior organic electronic expansion valve 114 and indoor heat exchanger 115.Certainly, also comprise miscellaneous part in air-conditioning system, due to other parts, to relate to content in the application less, and therefore, other parts do not illustrate in the example shown.
Based on the air-conditioning system shown in above-mentioned Fig. 1, this application provides a kind of control method of air-conditioning system, be applied to the controller (illustrating not shown) of air-conditioning system.As shown in Figure 2, described method comprises:
Step S201: before reception heats open command, utilization is arranged on the skin temperature of spraying enthalpy compressor described in the temperature sensor continuous collecting on spray enthalpy compressor case.
See Fig. 3, spray enthalpy compressor housing, compression chamber, stator winding and oil sump, also have other parts certainly, not shown at this.Spray enthalpy compressor is in external environment, and in compression chamber, circulation has cold-producing medium, and in oil sump, circulation has lubricating oil.When ambient temperature is lower residing for compression chamber, the cold-producing medium in compression chamber can be caused to be converted to liquid state by gaseous state; When the ambient temperature residing for oil sump is lower, the lubricating oil viscosity in oil sump can be caused to increase; These all can affect the normal work of spray enthalpy compressor.Therefore, when residing for compression chamber and oil sump, ambient temperature is lower, need to perform heating work.
Be in same external environment owing to spraying enthalpy compressor housing and compression chamber and oil sump, so by the skin temperature of spray enthalpy compressor, can judge that whether the ambient temperature of environment residing for compression chamber and oil sump is lower.Due in the lower situation of temperature, control spray enthalpy compressor operating and can cause damage to spray enthalpy compressor, therefore, in the present embodiment before the reception of spray enthalpy compressor heats open command (namely before spray enthalpy compressor operating), controller utilizes the temperature sensor 101 be arranged on spray enthalpy compressor housing to carry out the skin temperature of continuous collecting spray enthalpy compressor, so that whether the ambient temperature understanding environment residing for spray enthalpy compressor is lower.
Step S202: judge whether skin temperature is less than the first temperature value, if so, then enters step S203, otherwise enter step S201.
Be previously stored with in controller for representing the first temperature value that ambient temperature is lower.When ambient temperature is lower than the first temperature value, the cold-producing medium in compression chamber may be converted to liquid state by gaseous state, and in oil sump, lubricating oil meeting viscosity is larger.
Therefore, skin temperature and the first temperature value, after the skin temperature that temperature sensor collects, contrast by controller, if skin temperature is greater than the first temperature value, then illustrate that the ambient temperature of spraying environment residing for enthalpy compressor is not at present low especially, therefore need not carry out heating process.If skin temperature is less than the first temperature value, then illustrates that the ambient temperature of environment residing for spray enthalpy compressor is at present lower, need to carry out compressor from heating process.
Step S203: when described skin temperature is less than the first temperature value, to the stator winding conveying predetermined current in described spray enthalpy compressor; Wherein, described predetermined current is less than the starting current of described spray enthalpy compressor.
Due to spray enthalpy compressor, residing environment temperature is lower at present, and heating can cause spray enthalpy compressor damage rashly, therefore, first carries out spray enthalpy compressor from heating process.Spray enthalpy compressor from the detailed process of heating can be: controller controls the stator winding circulation predetermined current of spray enthalpy compressor.Predetermined current is the current value preset in controller, and predetermined current is less than the starting current of spray enthalpy compressor.
Because predetermined current is less than the starting current of spray enthalpy compressor, so after the predetermined current that circulates in stator winding, stator winding can not operate.But, because the resistance of stator winding is comparatively large, in the process of circulation predetermined current, produce more heat transfer.Because spray enthalpy compressor comprises stator winding, oil sump, compression chamber and housing, all parts is close to mutually, and therefore by thermal interaction, the heat that stator winding produces just can be passed to oil sump, compression chamber and housing.
After the heat that stator winding produces arrives oil sump, the lubricating oil temperature in oil sump raises, thus lubricating oil viscosity is reduced, thus solves the problem of spray enthalpy compressor low temperature oil starvation.After the heat that stator winding produces reaches compression chamber, the refrigerant temperature in compression chamber raises, thus becomes gaseous refrigerant by liquid refrigerant gradually, thus solves spray enthalpy compressor low temperature hydrops problem.That is, adopt the mode of stator winding heating, the problem of spray enthalpy compressor low temperature oil starvation and low temperature hydrops can be solved.
The heat of stator winding is passed to oil sump and compression chamber gradually, and, lubricating oil in oil sump and the cold-producing medium in compression chamber can not heat up immediately, after needing one period of heat time, just to reach in oil sump that lubricating oil viscosity reduces, cold-producing medium is converted to this object liquid by gaseous state in compression chamber.Therefore, the heat time being decided stator winding by a mode is needed.
Because the temperature of oil sump and compression chamber is little with spray enthalpy compressor case temperature difference, therefore, can determine whether continuing to utilize stator winding to heat oil sump and compression chamber by the skin temperature of spray enthalpy compressor.
Step S204: judge whether skin temperature is greater than the second temperature value, if so, then enters step S205, otherwise again enter step S204.Wherein, described first temperature value is less than described second temperature value.
Controller inside is provided with the second temperature value, and the second temperature value is for representing that in oil sump, lubricating oil temperature has been elevated to a certain degree, and now oil body is lower; Further, the cold-producing medium in compression chamber is elevated to uniform temperature, and now cold-producing medium is gaseous state.
When skin temperature has been greater than the second temperature value in electronics winding heating process, then illustrate that now stator winding heats a period of time, reached the object of cold-producing medium in lubricating oil and compression chamber in heating oil sump, now can stop heating process.Otherwise, continue to perform heating process.
Step S205: when described skin temperature is greater than the second temperature value, stops carrying described predetermined current to the stator winding in described spray enthalpy compressor.
That is, when skin temperature is greater than the second temperature value, stop to stator winding conveying predetermined current, after this, stator winding can be lowered the temperature gradually, and along with the cooling of stator winding, housing, oil sump and compression chamber also can constantly be lowered the temperature.When skin temperature is less than the first temperature value, said process can be repeated, so that the problem of maintenance spray enthalpy compressor is between the first temperature value and the second temperature value.
Can be found out by above technological means, the application has following beneficial effect:
The application before reception heats open command, can perform spray enthalpy compressor from heating process, from the detailed process of heating be: controller controls the stator winding circulation predetermined current of spray enthalpy compressor.Because predetermined current is less than the starting current of spray enthalpy compressor, so stator winding can not operate.But stator winding can produce heat in the process of circulation predetermined current.
Because spray enthalpy compressor comprises stator winding, oil sump, compression chamber and housing, all parts is close to mutually.Therefore, by thermal interaction, the heat that stator winding produces just can be passed to oil sump, compression chamber and housing, thus the lubricating oil temperature in oil sump is raised, thus lubricating oil viscosity is reduced; Further, the refrigerant temperature in compression chamber also can be made to raise, thus become gaseous refrigerant by liquid refrigerant gradually.Adopt the mode of stator winding heating, the problem of spray enthalpy compressor low temperature oil starvation and low temperature hydrops can be solved.
Although by the mode of spray enthalpy compressor from heating, the problem of low temperature oil starvation and low temperature hydrops in spray enthalpy compressor can be solved to a certain extent.But applicant finds except spray enthalpy compressor 102, when external environment is lower, shown in Figure 1, the cold-producing medium in oil eliminator 104, outdoor heat exchanger 106 and gas-liquid separator 113 also can liquefy, thus affects the normal work of air-conditioning system.Therefore, the application also needs to solve the problem having hydrops in oil eliminator 104, outdoor heat exchanger 106 and gas-liquid separator 113.
For this reason, after reception heats open command, present invention also provides following technological means.As shown in Figure 4, specifically comprise the following steps:
Step S401: control described air-conditioning system and carry out pre-heat phase.
Lower mask body introduction controls the concrete implementation that air-conditioning system carries out pre-heat phase, shown in Figure 5, specifically comprises the following steps:
Step S501: control described spray enthalpy compressor with predeterminated frequency work; Wherein, described predeterminated frequency is less than the commutating frequency of cross valve in described air-conditioning system.
Because in gas-liquid separator 113, oil eliminator 104 and outdoor heat exchanger 106, cold-producing medium is all liquid, so control spray enthalpy compressor first carries out work with predeterminated frequency and predeterminated frequency can not be too high.If because predeterminated frequency is too high, then spray enthalpy compressor can be caused excessive from the pressure of inspiration(Pi) of gas-liquid separator 113, spray enthalpy compressor may be caused to produce liquid hammer, damage spray enthalpy compressor.Because the suction frequency of spray enthalpy compressor is directly proportional to the commutating frequency of cross valve, therefore, the commutating frequency of cross valve is less than at the predeterminated frequency of pre-heat phase spray enthalpy compressor, too high with blowout prevention enthalpy compressor operating frequency, and there is the problem of spraying enthalpy compressor liquid hammer.
Step S502: at described spray enthalpy compressor with in the process of described predeterminated frequency work, utilizes the first pressure sensor be arranged on described spray enthalpy compressor exhaust pipe, detects the pressure at expulsion of described spray enthalpy compressor.
In spray enthalpy compressor operation, lower at the temperature and pressure of the cold-producing medium of initial period spray enthalpy compressor output, after operation a period of time, the temperature and pressure of cold-producing medium can raise gradually.When spraying enthalpy compressor and exporting the cold-producing medium of different pressures, the circulation path of cold-producing medium is different.Therefore, controller is arranged on the pressure at expulsion of the first pressure sensor collection spray enthalpy compressor on spray enthalpy compressor exhaust pipe.
Step S503: when described pressure at expulsion is less than the first preset pressure value, utilizes the mode controlling low temperature valve and close, increase the unlatching of enthalpy valve, controls the cold-producing medium circulation first ring road in described spray enthalpy compressor; Wherein, described first ring route spray enthalpy compressor, oil eliminator, cross valve, outdoor heat exchanger, subcooler and increasing enthalpy valve composition.
Be previously stored with the first preset pressure value in controller, the first preset pressure value is lower for representing the pressure of the cold-producing medium that spray enthalpy compressor exports, and now, can control low temperature valve 110 and close, controls to increase enthalpy valve 103 and open, and cold-producing medium is circulated first ring road.
Close, increase after enthalpy valve 103 opens controlling low temperature valve 110, spray enthalpy compressor can export the gaseous refrigerant of high pressure-temperature and the gas mixture of lubricating oil composition gradually.After gas mixture exports after the exhaust of spray enthalpy compressor, can through oil eliminator 104, oil eliminator 104 can by lubricating oil separation out thus export gaseous refrigerant.Gaseous refrigerant, through cross valve 105, enters outdoor heat exchanger 106.And then flow into spray enthalpy compressor 102 inside through heating electric expansion valve 107, subcooler electric expansion valve 108, subcooler 109 and increasing enthalpy valve 103.
Be high temperature liquid refrigerant due to what export from spray enthalpy compressor, after the first loop, high temperature liquid refrigerant utilizes the principle of heat exchange, the heat of gaseous refrigerant is distributed to the cold-producing medium in oil eliminator 104 and outdoor heat exchanger 106, thus improve the temperature of oil eliminator 104 and outdoor heat exchanger 106, thus cold-producing medium in oil eliminator 104 and outdoor heat exchanger 106 is made to have liquid state to be gaseous state gradually.
Step S504: when described pressure at expulsion is greater than the second preset pressure value, utilizes and controlled low temperature valve and open, increase the mode that enthalpy valve cuts out, and the cold-producing medium controlled in described spray enthalpy compressor circulates the second loop; Described second preset pressure value is greater than described first preset pressure value; Wherein, described second loop forms by spraying enthalpy compressor, oil eliminator, cross valve, outdoor heat exchanger, subcooler and gas-liquid separator.
Along with the increase of spray enthalpy Compressor Discharge Pressure, when the pressure at expulsion of spray enthalpy compressor is greater than the second preset pressure value, illustrate that the pressure at expulsion of spray enthalpy compressor is excessive, increase pressure if continue, spray enthalpy compressor can be caused to damage because pressure is excessive.Therefore, now control to increase enthalpy valve 103 and close, controlled low temperature valve 110 and open, thus make flow of refrigerant through second servo loop.
Process and first loop of second servo loop are unanimous on the whole, in the second loop when cold-producing medium is after subcooler, no longer through increasing enthalpy valve 103 but low temperature valve 110 can being flowed through, and then enter gas-liquid separator 113, thus cold-producing medium in gas-liquid separator 113 is heated, finally flow in spray enthalpy compressor 102.That is, when gaseous refrigerant device is in the process of circulation second servo loop, can the cold-producing medium in gas-liquid separator 113 be heated.
Then feedback diagram 4, enters step S402: when meeting pre-conditioned, controls described air-conditioning system and enters the heating period.
After step S401 performs a period of time, cold-producing medium in oil eliminator 104, outdoor heat exchanger 106 and gasoline trap 113 is converted to gaseous state, thus realizes in preheating process the object that the cold-producing medium in oil eliminator 104, outdoor heat exchanger 106 and gasoline trap 113 heats.
When in step S401 implementation, when meeting pre-conditioned, determining to have heated complete to the cold-producing medium in oil eliminator 104, outdoor heat exchanger 106 and gasoline trap 113, now can terminate preheating process, directly enter the heating period, thus realize the object of air-conditioning heating.
Wherein, in step S402, meet pre-conditioned deterministic process, as shown in Figure 6, specifically comprise the following steps:
Step S601: utilize the second pressure sensor be arranged on described spray enthalpy compressor suction duct, detect the pressure of inspiration(Pi) of described spray enthalpy compressor;
Step S602: when judge described pressure of inspiration(Pi) be greater than described first preset pressure value and described cross low temperature valve open time, determine to meet pre-conditioned.Be understandable that, when judging that described pressure of inspiration(Pi) is not more than described first preset pressure value or the described closedown of low temperature valve excessively, judgement does not meet pre-conditioned.
Because the output pressure in spray enthalpy compressor rises gradually, therefore, when the pressure at expulsion of spray enthalpy compressor is less than the first preset pressure value, gaseous refrigerant flows through the first loop; Along with the rising gradually of pressure at expulsion, when pressure at expulsion is greater than the second preset pressure value, gaseous refrigerant can flow through second servo loop.In the process of flow process second servo loop, can heat air liquid/gas separator 113.
At gas-liquid separator 113 in heating process, the pressure of gas-liquid separator 113 inside can increase gradually, and suck in spray enthalpy compressor along with spray enthalpy compressor suction duct, therefore, when spraying the pressure of inspiration(Pi) in enthalpy compressor suction duct and being greater than the first preset pressure value, then illustrate and heated complete to gas-liquid separator.Now can stop preheating, enter the heating period from control spray enthalpy compressor.
As shown in Figure 7, present invention also provides a kind of control device of air-conditioning system, be integrated in the controller of air-conditioning system, described device comprises:
Collecting unit 71, before heating open command in reception, utilization is arranged on the skin temperature of spraying enthalpy compressor described in the temperature sensor continuous collecting on spray enthalpy compressor case;
Supply unit 72, for when described skin temperature is less than the first temperature value, to the stator winding conveying predetermined current in described spray enthalpy compressor; Wherein, described predetermined current is less than the starting current of described spray enthalpy compressor;
Stop element 73, for when described skin temperature is greater than the second temperature value, stops carrying described predetermined current to the stator winding in described spray enthalpy compressor;
Wherein, described first temperature value is less than described second temperature value.
As shown in Figure 8, the control device of air-conditioning system that the application provides also comprises:
Preheating control unit 81, carrying out pre-heat phase for controlling described air-conditioning system;
Heat control unit 82, for when meeting pre-conditioned, controlling described air-conditioning system and entering the heating period.
Wherein, as shown in Figure 9, preheat control unit described in comprise:
Controlled frequency unit 91, for controlling described spray enthalpy compressor with predeterminated frequency work; Wherein, described predeterminated frequency is less than the commutating frequency of cross valve in described air-conditioning system;
First detecting unit 92, at described spray enthalpy compressor with in the process of described predeterminated frequency work, utilize the first pressure sensor of being arranged on described spray enthalpy compressor exhaust pipe, detect the pressure at expulsion of described spray enthalpy compressor;
First control unit 93, for when described pressure at expulsion is less than the first preset pressure value, utilizes the mode controlling low temperature valve and close, increase the unlatching of enthalpy valve, controls the cold-producing medium circulation first ring road in described spray enthalpy compressor;
Second control unit 94, for when described pressure at expulsion is greater than the second preset pressure value, utilizes and controlled low temperature valve and open, increase the mode that enthalpy valve cuts out, and the cold-producing medium controlled in described spray enthalpy compressor circulates the second loop; Described second preset pressure value is greater than described first preset pressure value;
Wherein, described first ring route spray enthalpy compressor, oil eliminator, cross valve, outdoor heat exchanger, subcooler and increasing enthalpy valve composition; Described second loop forms by spraying enthalpy compressor, oil eliminator, cross valve, outdoor heat exchanger, subcooler and gas-liquid separator.
Wherein, as shown in Figure 10, described heat control unit comprises:
Second detecting unit 101, for utilizing the second pressure sensor be arranged on described spray enthalpy compressor suction duct, detects the pressure of inspiration(Pi) of described spray enthalpy compressor;
Determining unit 102, for when judge described pressure of inspiration(Pi) be greater than described first preset pressure value and described cross low temperature valve open time, determine to meet pre-conditioned.
Nack unit 103, for when judge described pressure of inspiration(Pi) be not more than described first preset pressure value or described cross low temperature valve close time, determine not meet pre-conditioned.
Can find out that the application has following beneficial effect by above technological means:
Because the housing of spray enthalpy compressor is also in external environment, so can sensing external environment temperature cold and hot, in addition the change in oil sump and compression chamber is not easy to gather, and therefore, whether the application adopts the change of spray enthalpy compressor case temperature to control to heat stator winding.
The application before reception heats open command, can perform spray enthalpy compressor from heating process.Be: when skin temperature is less than the first temperature value that controller controls the stator winding circulation predetermined current of spray enthalpy compressor from the detailed process of heating.Because predetermined current is less than the starting current of spray enthalpy compressor, so stator winding can not operate.But stator winding can produce heat in the process of circulation predetermined current.
Because spray enthalpy compressor comprises stator winding, oil sump, compression chamber and housing, all parts is close to mutually.Therefore, by thermal interaction, the heat that stator winding produces just can be passed to oil sump, compression chamber and housing, thus the lubricating oil temperature in oil sump is raised, thus lubricating oil viscosity is reduced; Further, the refrigerant temperature in compression chamber also can be made to raise, thus become gaseous refrigerant by liquid refrigerant gradually.Adopt the mode of stator winding heating, the problem of spray enthalpy compressor low temperature oil starvation and low temperature hydrops can be solved.
If the function described in the present embodiment method using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computing equipment read/write memory medium.Based on such understanding, the part of the part that the embodiment of the present application contributes to prior art or this technical scheme can embody with the form of software product, this software product is stored in a storage medium, comprising some instructions in order to make a computing equipment (can be personal computer, server, mobile computing device or the network equipment etc.) perform all or part of step of method described in each embodiment of the application.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only storage (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc. various can be program code stored medium.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, between each embodiment same or similar part mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the application.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the spirit or scope of the application, can realize in other embodiments.Therefore, the application can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a control method for air-conditioning system, is characterized in that, is applied to the controller of air-conditioning system, and described method comprises:
Before reception heats open command, utilization is arranged on the skin temperature of spraying enthalpy compressor described in the temperature sensor continuous collecting on spray enthalpy compressor case;
When described skin temperature is less than the first temperature value, to the stator winding conveying predetermined current in described spray enthalpy compressor; Wherein, described predetermined current is less than the starting current of described spray enthalpy compressor;
When described skin temperature is greater than the second temperature value, stop carrying described predetermined current to the stator winding in described spray enthalpy compressor;
Wherein, described first temperature value is less than described second temperature value.
2. the method for claim 1, is characterized in that, after reception heats open command, described method also comprises:
Control described air-conditioning system and carry out pre-heat phase;
When meeting pre-conditioned, controlling described air-conditioning system and entering the heating period.
3. method as claimed in claim 2, it is characterized in that, the described air-conditioning system of described control is carried out pre-heat phase and is comprised:
Control described spray enthalpy compressor with predeterminated frequency work; Wherein, described predeterminated frequency is less than the commutating frequency of cross valve in described air-conditioning system;
At described spray enthalpy compressor with in the process of described predeterminated frequency work, utilize the first pressure sensor be arranged on described spray enthalpy compressor exhaust pipe, detect the pressure at expulsion of described spray enthalpy compressor;
When described pressure at expulsion is less than the first preset pressure value, utilize the mode controlling low temperature valve and close, increase the unlatching of enthalpy valve, control the cold-producing medium circulation first ring road in described spray enthalpy compressor;
When described pressure at expulsion is greater than the second preset pressure value, utilizes and controlled low temperature valve and open, increase the mode that enthalpy valve cuts out, the cold-producing medium controlled in described spray enthalpy compressor circulates the second loop; Described second preset pressure value is greater than described first preset pressure value;
Wherein, described first ring route spray enthalpy compressor, oil eliminator, cross valve, outdoor heat exchanger, subcooler and increasing enthalpy valve composition; Described second loop forms by spraying enthalpy compressor, oil eliminator, cross valve, outdoor heat exchanger, subcooler and gas-liquid separator.
4. method as claimed in claim 3, is characterized in that, meet pre-conditioned deterministic process and comprise:
Utilize the second pressure sensor be arranged on described spray enthalpy compressor suction duct, detect the pressure of inspiration(Pi) of described spray enthalpy compressor;
When judge described pressure of inspiration(Pi) be greater than described first preset pressure value and described cross low temperature valve open time, determine to meet pre-conditioned.
5. method as claimed in claim 4, is characterized in that, also comprise:
When judge described pressure of inspiration(Pi) be not more than described first preset pressure value or described cross low temperature valve close time, determine not meet pre-conditioned.
6. a control device for air-conditioning system, is characterized in that, is integrated in the controller of air-conditioning system, and described device comprises:
Collecting unit, before heating open command in reception, utilization is arranged on the skin temperature of spraying enthalpy compressor described in the temperature sensor continuous collecting on spray enthalpy compressor case;
Supply unit, for when described skin temperature is less than the first temperature value, to the stator winding conveying predetermined current in described spray enthalpy compressor; Wherein, described predetermined current is less than the starting current of described spray enthalpy compressor;
Stop element, for when described skin temperature is greater than the second temperature value, stops carrying described predetermined current to the stator winding in described spray enthalpy compressor;
Wherein, described first temperature value is less than described second temperature value.
7. device as claimed in claim 6, is characterized in that, also comprise:
Preheating control unit, carrying out pre-heat phase for controlling described air-conditioning system;
Heat control unit, for when meeting pre-conditioned, controlling described air-conditioning system and entering the heating period.
8. device as claimed in claim 7, is characterized in that, described in preheat control unit and comprise:
Controlled frequency unit, for controlling described spray enthalpy compressor with predeterminated frequency work; Wherein, described predeterminated frequency is less than the commutating frequency of cross valve in described air-conditioning system;
First detecting unit, at described spray enthalpy compressor with in the process of described predeterminated frequency work, utilize the first pressure sensor of being arranged on described spray enthalpy compressor exhaust pipe, detect the pressure at expulsion of described spray enthalpy compressor;
First control unit, for when described pressure at expulsion is less than the first preset pressure value, utilizes the mode controlling low temperature valve and close, increase the unlatching of enthalpy valve, controls the cold-producing medium circulation first ring road in described spray enthalpy compressor;
Second control unit, for when described pressure at expulsion is greater than the second preset pressure value, utilizes and controlled low temperature valve and open, increase the mode that enthalpy valve cuts out, and the cold-producing medium controlled in described spray enthalpy compressor circulates the second loop; Described second preset pressure value is greater than described first preset pressure value;
Wherein, described first ring route spray enthalpy compressor, oil eliminator, cross valve, outdoor heat exchanger, subcooler and increasing enthalpy valve composition; Described second loop forms by spraying enthalpy compressor, oil eliminator, cross valve, outdoor heat exchanger, subcooler and gas-liquid separator.
9. device as claimed in claim 8, it is characterized in that, described heat control unit comprises:
Second detecting unit, for utilizing the second pressure sensor be arranged on described spray enthalpy compressor suction duct, detects the pressure of inspiration(Pi) of described spray enthalpy compressor;
Determining unit, for when judge described pressure of inspiration(Pi) be greater than described first preset pressure value and described cross low temperature valve open time, determine to meet pre-conditioned.
10. device as claimed in claim 9, is characterized in that, also comprise:
Nack unit, for when judge described pressure of inspiration(Pi) be not more than described first preset pressure value or described cross low temperature valve close time, determine not meet pre-conditioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610093816.2A CN105526683B (en) | 2016-02-19 | 2016-02-19 | Control method and device of air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610093816.2A CN105526683B (en) | 2016-02-19 | 2016-02-19 | Control method and device of air conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105526683A true CN105526683A (en) | 2016-04-27 |
| CN105526683B CN105526683B (en) | 2018-09-07 |
Family
ID=55769073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610093816.2A Active CN105526683B (en) | 2016-02-19 | 2016-02-19 | Control method and device of air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105526683B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106288196A (en) * | 2016-08-17 | 2017-01-04 | 珠海格力电器股份有限公司 | Control device and control method for refrigerant shortage protection of air conditioner and air conditioning system |
| WO2018090894A1 (en) * | 2016-11-16 | 2018-05-24 | 艾默生环境优化技术(苏州)有限公司 | Compressor assembly and control method thereof and refrigerating/heating system |
| CN108679882A (en) * | 2018-05-18 | 2018-10-19 | 浙江国祥股份有限公司 | A kind of low-temperature air source heat pump Gas-supplying enthalpy-increasing system |
| CN109099610A (en) * | 2018-09-07 | 2018-12-28 | 青岛海信日立空调系统有限公司 | Refrigeration system, air conditioner and the air-conditioner control method of Gas-supplying enthalpy-increasing |
| CN109469971A (en) * | 2018-11-13 | 2019-03-15 | 珠海格力电器股份有限公司 | heating control method and air conditioner control system |
| CN110243062A (en) * | 2019-06-24 | 2019-09-17 | 广东志高暖通设备股份有限公司 | The heating means and air-conditioning press of air-conditioning press |
| CN110285535A (en) * | 2019-06-24 | 2019-09-27 | 珠海格力电器股份有限公司 | Enthalpy increasing control method and device for air conditioning system |
| WO2020164212A1 (en) * | 2019-02-12 | 2020-08-20 | 珠海格力电器股份有限公司 | Refrigerant circulation system and control method thereof, and air conditioner |
| WO2020177284A1 (en) * | 2019-03-01 | 2020-09-10 | 青岛海尔空调电子有限公司 | Control method and control system for preventing liquid hammer in compressor of air conditioner |
| CN111928421A (en) * | 2020-08-07 | 2020-11-13 | 珠海格力电器股份有限公司 | Air-supplementing enthalpy-increasing heat pump system and early warning control method thereof |
| CN112197408A (en) * | 2020-10-13 | 2021-01-08 | 广东美的制冷设备有限公司 | Heating control method of compressor winding, air conditioner control method, system and equipment |
| CN113834205A (en) * | 2020-06-24 | 2021-12-24 | 广东美的制冷设备有限公司 | Control method for heating of compressor winding, air conditioner and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11108473A (en) * | 1997-10-03 | 1999-04-23 | Mitsubishi Heavy Ind Ltd | Air conditioner |
| CN102105759A (en) * | 2008-07-23 | 2011-06-22 | 开利公司 | Methods and systems for compressor operation |
| CN103743059A (en) * | 2013-12-23 | 2014-04-23 | 广东美芝精密制造有限公司 | Air conditioner and pre-heating control method and device of compressor |
| CN104179668A (en) * | 2014-07-25 | 2014-12-03 | 浙江新昌三瑞香雪冲业有限公司 | Air condition compressor control method |
| CN104613665A (en) * | 2015-02-02 | 2015-05-13 | 珠海格力电器股份有限公司 | Heat pump air conditioning system |
| CN105004008A (en) * | 2015-07-20 | 2015-10-28 | 广东美的暖通设备有限公司 | Low-temperature start control method and system for frequency conversion air conditioner and air conditioner |
-
2016
- 2016-02-19 CN CN201610093816.2A patent/CN105526683B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11108473A (en) * | 1997-10-03 | 1999-04-23 | Mitsubishi Heavy Ind Ltd | Air conditioner |
| CN102105759A (en) * | 2008-07-23 | 2011-06-22 | 开利公司 | Methods and systems for compressor operation |
| CN103743059A (en) * | 2013-12-23 | 2014-04-23 | 广东美芝精密制造有限公司 | Air conditioner and pre-heating control method and device of compressor |
| CN104179668A (en) * | 2014-07-25 | 2014-12-03 | 浙江新昌三瑞香雪冲业有限公司 | Air condition compressor control method |
| CN104613665A (en) * | 2015-02-02 | 2015-05-13 | 珠海格力电器股份有限公司 | Heat pump air conditioning system |
| CN105004008A (en) * | 2015-07-20 | 2015-10-28 | 广东美的暖通设备有限公司 | Low-temperature start control method and system for frequency conversion air conditioner and air conditioner |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106288196A (en) * | 2016-08-17 | 2017-01-04 | 珠海格力电器股份有限公司 | Control device and control method for refrigerant shortage protection of air conditioner and air conditioning system |
| CN106288196B (en) * | 2016-08-17 | 2018-11-23 | 珠海格力电器股份有限公司 | Control device and control method for refrigerant shortage protection of air conditioner and air conditioning system |
| KR20190082875A (en) * | 2016-11-16 | 2019-07-10 | 에머슨 클라이미트 테크놀로지스 (쑤저우) 코., 엘티디. | Compressor assembly and its control method and cooling / heating system |
| WO2018090894A1 (en) * | 2016-11-16 | 2018-05-24 | 艾默生环境优化技术(苏州)有限公司 | Compressor assembly and control method thereof and refrigerating/heating system |
| CN108072198A (en) * | 2016-11-16 | 2018-05-25 | 艾默生环境优化技术(苏州)有限公司 | Compressor assembly, control method thereof and refrigerating/heating system |
| KR102189168B1 (en) | 2016-11-16 | 2020-12-09 | 에머슨 클라이미트 테크놀로지스 (쑤저우) 코., 엘티디. | Compressor assembly and its control method and cooling/heating system |
| CN108679882A (en) * | 2018-05-18 | 2018-10-19 | 浙江国祥股份有限公司 | A kind of low-temperature air source heat pump Gas-supplying enthalpy-increasing system |
| CN108679882B (en) * | 2018-05-18 | 2019-04-19 | 浙江国祥股份有限公司 | A kind of low-temperature air source heat pump Gas-supplying enthalpy-increasing system |
| CN109099610A (en) * | 2018-09-07 | 2018-12-28 | 青岛海信日立空调系统有限公司 | Refrigeration system, air conditioner and the air-conditioner control method of Gas-supplying enthalpy-increasing |
| CN109469971A (en) * | 2018-11-13 | 2019-03-15 | 珠海格力电器股份有限公司 | heating control method and air conditioner control system |
| CN109469971B (en) * | 2018-11-13 | 2020-01-17 | 珠海格力电器股份有限公司 | Heating control method and air conditioner control system |
| WO2020164212A1 (en) * | 2019-02-12 | 2020-08-20 | 珠海格力电器股份有限公司 | Refrigerant circulation system and control method thereof, and air conditioner |
| WO2020177284A1 (en) * | 2019-03-01 | 2020-09-10 | 青岛海尔空调电子有限公司 | Control method and control system for preventing liquid hammer in compressor of air conditioner |
| CN110285535A (en) * | 2019-06-24 | 2019-09-27 | 珠海格力电器股份有限公司 | Enthalpy increasing control method and device for air conditioning system |
| CN110285535B (en) * | 2019-06-24 | 2020-11-17 | 珠海格力电器股份有限公司 | Enthalpy increasing control method and device for air conditioning system |
| CN110243062A (en) * | 2019-06-24 | 2019-09-17 | 广东志高暖通设备股份有限公司 | The heating means and air-conditioning press of air-conditioning press |
| CN113834205A (en) * | 2020-06-24 | 2021-12-24 | 广东美的制冷设备有限公司 | Control method for heating of compressor winding, air conditioner and storage medium |
| CN113834205B (en) * | 2020-06-24 | 2022-09-27 | 广东美的制冷设备有限公司 | Control method for heating of compressor winding, air conditioner and storage medium |
| CN111928421A (en) * | 2020-08-07 | 2020-11-13 | 珠海格力电器股份有限公司 | Air-supplementing enthalpy-increasing heat pump system and early warning control method thereof |
| CN112197408A (en) * | 2020-10-13 | 2021-01-08 | 广东美的制冷设备有限公司 | Heating control method of compressor winding, air conditioner control method, system and equipment |
| CN112197408B (en) * | 2020-10-13 | 2022-04-01 | 广东美的制冷设备有限公司 | Heating control method of compressor winding, air conditioner control method, system and equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105526683B (en) | 2018-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105526683A (en) | Control method and device of air conditioning system | |
| EP2102569B1 (en) | Methods and systems for controlling an air conditioning system operating in free cooling mode | |
| CN101611275B (en) | Methods and systems for controlling air conditioning systems having a cooling mode and a free-cooling mode | |
| CN101688703B (en) | Air conditioning systems and methods having free-cooling pump-protection sequences | |
| EP2446200B1 (en) | Low ambient operating procedure for cooling systems with high efficiency condensers | |
| CN108474519A (en) | Cooling hydrogen supply station and hydrogen cooling system | |
| CN105593611A (en) | Heat source device and method for controlling same | |
| CN107091516A (en) | Current control method, current control system and air conditioner | |
| CN104956155A (en) | System and method for controlling a system that includes variable speed compressor | |
| CN101821509A (en) | Compressor protection system and method | |
| CN107218741A (en) | A kind of multiple on-line system method for controlling oil return | |
| CN101813396B (en) | Air conditioner and method for detecting oil level of compressor thereof | |
| CN106394184B (en) | CO (carbon monoxide)2Heat pump air conditioning system and control method thereof | |
| CN103216909A (en) | Control method of outdoor fan during heating of variable-frequency multi-connection type air conditioning unit | |
| CN104110922A (en) | Heat pump system and start control method thereof | |
| CN100447509C (en) | Condensation pressure control method | |
| CN102725596B (en) | Heat pump system | |
| CN105258332A (en) | Waste heat recycling system of data room | |
| CN104848379B (en) | Air compressor machine recuperation of heat and handpiece Water Chilling Units joint refrigeration heating | |
| KR101497210B1 (en) | Hybrid cooling and heating system and the appratus having it | |
| CN108006865A (en) | Air-conditioning system and its control method | |
| CN104279694A (en) | Integrated air conditioner and refrigerant control energy-saving device and control method thereof | |
| CN106679220A (en) | Heat pump air conditioning system and control method thereof | |
| CN206338887U (en) | Cold-storing type mobile air conditioner system | |
| CN101469903B (en) | Condensation fan control method for year round cooling air source heat pump units |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |