CN103388856A - Multi-split air conditioner system and quick-starting heat generation method - Google Patents
Multi-split air conditioner system and quick-starting heat generation method Download PDFInfo
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- CN103388856A CN103388856A CN2013103040307A CN201310304030A CN103388856A CN 103388856 A CN103388856 A CN 103388856A CN 2013103040307 A CN2013103040307 A CN 2013103040307A CN 201310304030 A CN201310304030 A CN 201310304030A CN 103388856 A CN103388856 A CN 103388856A
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Abstract
The invention discloses a multi-split air conditioner system. When the temperature of an indoor environment reaches the preset temperature, the multi-split air conditioner system is controlled through a controller of the multi-split air conditioner system to run in a standby-ready mode, a refrigerant circulates between a compressor and an air and liquid separator, the capacity output of the compressor is controlled, and the pressure of a refrigerant outlet of the compressor is maintained within certain range, so when the multi-split air conditioner system is restarted to generate heat, the phenomenon of raising the lower pressure of the refrigerant to the working pressure is avoided, the cold air prevention time of an indoor unit is shortened, and the better user experience can be obtained. In addition, by setting the time of the multi-split air conditioner system entering the standby-ready mode through the controller, when the time of entering the standby-ready mode reaches the preset value, the multi-split air conditioner system is controlled to enter the standby mode, and the compressor is closed, so as to save the electric energy. The invention also provides a quick-starting heat generation method suitable for the multi-split air conditioner system.
Description
Technical field
The present invention relates to air-conditioning technical field, especially relate to a kind of multi-online air-conditioning system and start fast heating method.
Background technology
Multi-online air-conditioning system is called for short multi-connected machine, it is a kind of novel air conditioning system with central air-conditioning system characteristics, it integrates the technology such as frequency conversion, transfiguration, have use energy-conservation, comfortable, control the advantages such as flexible, the combination by the different capabilities unit and arrange the requirement that can meet the different scales building.
The application of multi-connected machine in people's live and work environment is more and more universal, thereby people are more and more higher to the comfortableness requirement of air-conditioning system.Open in the process that heats at multi-online air-conditioning system; the room temperature that detects when indoor set is during greater than design temperature; compressor shutdown; the room temperature that detects when indoor set is during less than design temperature; compressor starts again, and this is that conventional at present multi-online air-conditioning system is controlled the control method of air-conditioning ability output by the temperature difference.
As mentioned above, multi-connected machine is kept indoor temperature by the start and stop of controlling compressor and is changed within the specific limits in the process that heats, the drawback of this control method be compressor while again starting compressor exhaust temperature lower, indoor set pipeline temperature is also lower, therefore the indoor set blower fan can not be opened immediately, the time of the anti-cold wind of indoor set is longer, treat that system warm-up is complete, indoor set could normally be opened and heat, and this control model that heats can cause compressor again to start long problem of anti-cold wind time of indoor machine during heating.
Summary of the invention
Main purpose of the present invention is to provide a kind of multi-online air-conditioning system and starts fast heating method, is intended to shorten multi-online air-conditioning system and again starts the time of the anti-cold wind of indoor machine during heating, improves user's experience, saves simultaneously electric energy.
To achieve these objectives, the present invention proposes a kind of multi-online air-conditioning system, comprise some off-premises stations and indoor set, described off-premises station comprises controller, compressor, cross valve, magnetic valve, outer organic electronic expansion valve, interior organic electronic expansion valve, off-premises station blower fan, indoor set blower fan, and described controller comprises:
The first Opportunity awaiting control for linear module, be used at multi-online air-conditioning system according to default heating mode running, and when indoor environment temperature reached preset temperature, the control multi-online air-conditioning system moved with accurate standby mode;
Heat control module, be used at multi-online air-conditioning system according to accurate standby mode running, when the difference of described indoor environment temperature and described preset temperature during greater than predetermined threshold value, control multi-online air-conditioning system and enter described default heating mode and move;
The second Opportunity awaiting control for linear module, be used at multi-online air-conditioning system, controlling multi-online air-conditioning system and entering the standby mode operation when the time with described accurate standby mode operation reaches Preset Time according to accurate standby mode running.
Preferably, the described control module that heats also is used at multi-online air-conditioning system according to described standby mode running,, control multi-online air-conditioning system and enter described default heating mode operation during greater than described predetermined threshold value when the difference of described indoor environment temperature and described preset temperature.
Preferably, described the first Opportunity awaiting control for linear module controls multi-online air-conditioning system comprises with the step of accurate standby mode operation: control compressor and treat the unit frequency operation with standard, open magnetic valve, cross valve powers on, close outer organic electronic expansion valve, interior organic electronic expansion valve, off-premises station blower fan and indoor set blower fan, discharged by compressor exhaust pipe with the cold-producing medium in the refrigerant circulation loop of controlling multi-online air-conditioning system, flow through after magnetic valve and enter gas-liquid separator, compressed machine muffler is got back to compressor.
Preferably, described the first Opportunity awaiting control for linear module comprises: pressure sensing cell, for detection of the pressure of the refrigerant outlet of compressor in described refrigerant circulation loop; Frequency control unit, be used for controlling according to the pressure of the refrigerant outlet that detects the lifting of compressor operating frequency, and the pressure of the refrigerant outlet of described compressor is maintained in default pressure limit.
Preferably, described frequency control module specifically is used for: when the pressure of the refrigerant outlet that compressor detected, during greater than 3.0MPa, control the running frequency of compressor and be down to 20Hz ~ 30 Hz; During less than 2.6MPa, the running frequency of controlling compressor rises to 50Hz ~ 60 Hz when the pressure of the refrigerant outlet that compressor detected.
Preferably, described the second Opportunity awaiting control for linear module controls multi-online air-conditioning system step of entering standby mode operation comprises: close compressor, cross valve, magnetic valve, outer organic electronic expansion valve, interior organic electronic expansion valve, off-premises station blower fan and indoor set blower fan.
The present invention proposes a kind of quick startup heating method simultaneously, and the method is applicable to comprise the multi-online air-conditioning system of accurate standby mode, standby mode and default heating mode, and the method comprises the following steps:
Multi-online air-conditioning system according to described default heating mode running in, when indoor environment temperature reaches preset temperature, control multi-online air-conditioning system with described accurate standby mode operation;
Multi-online air-conditioning system according to described accurate standby mode running in,, control multi-online air-conditioning system and enter described default heating mode operation during greater than predetermined threshold value when the difference of described indoor environment temperature and described preset temperature;
Multi-online air-conditioning system according to described accurate standby mode running in, when the time with described accurate standby mode operation reaches Preset Time, control multi-online air-conditioning system and enter described standby mode operation.
Preferably, described multi-online air-conditioning system according to described accurate standby mode running in, when the time with described accurate standby mode operation reaches Preset Time, also comprise after controlling the step that multi-online air-conditioning system enters described standby mode operation: multi-online air-conditioning system according to described standby mode running in,, control multi-online air-conditioning system and enter described default heating mode operation during greater than described predetermined threshold value when the difference of described indoor environment temperature and described preset temperature.
Preferably, described control multi-online air-conditioning system comprises with the step of described accurate standby mode operation: control compressor and treat the unit frequency operation with standard, open magnetic valve, cross valve powers on, close outer organic electronic expansion valve, interior organic electronic expansion valve, off-premises station blower fan and indoor set blower fan, discharged by compressor exhaust pipe with the cold-producing medium in the refrigerant circulation loop of controlling multi-online air-conditioning system, enter gas-liquid separator after the magnetic valve of flowing through, compressed machine muffler is got back to compressor.
Preferably, described control compressor treats that with standard the step of unit frequency operation comprises: the pressure that detects the refrigerant outlet of compressor in described refrigerant circulation loop; Control the lifting of compressor operating frequency according to the pressure of the refrigerant outlet that detects, the pressure of the refrigerant outlet of described compressor is maintained in default pressure limit.
Preferably, the pressure of described refrigerant outlet according to detecting is controlled the lifting of compressor operating frequency, the step that the pressure of the refrigerant outlet of described compressor is maintained in default pressure limit comprises: when the pressure of the refrigerant outlet that compressor detected, during greater than 3.0MPa, control the running frequency of compressor and be down to 20Hz ~ 30 Hz; During less than 2.6MPa, the running frequency of controlling compressor rises to 50Hz ~ 60 Hz when the pressure of the refrigerant outlet that compressor detected.
Preferably, the described control multi-online air-conditioning system step that enters the operation of described standby mode comprises: close compressor, cross valve, magnetic valve, outer organic electronic expansion valve, interior organic electronic expansion valve, off-premises station blower fan and indoor set blower fan.
a kind of multi-online air-conditioning system provided by the present invention and start fast heating method, by being provided with magnetic valve between the pressure duct at cold-producing medium and low pressure line, when indoor environment temperature reaches default temperature, controlling multi-online air-conditioning system moves with accurate standby mode, opens solenoid valve, cold-producing medium is circulated between compressor and gas-liquid separator, control simultaneously the volume output of compressor, the pressure of the refrigerant outlet of compressor is remained in certain scope, when indoor environment temperature departs from default temperature range, multi-online air-conditioning system starts while heating again can avoid cold-producing medium from lower pressure rise to operating pressure, shortened the time of the anti-cold wind of indoor set, can access user preferably experiences.In addition, the present invention also enters the time of accurate standby mode operation by setting multi-online air-conditioning system, when the time that enters accurate standby mode operation reaches preset value, control multi-online air-conditioning system and enter standby mode, close compressor, thus reach the purpose of saving electric energy.
Description of drawings
Fig. 1 is the theory of constitution figure of multi-online air-conditioning system of the present invention;
Fig. 2 is the functional block diagram of the controller of multi-online air-conditioning system of the present invention;
Fig. 3 is the functional block diagram of the first Opportunity awaiting control for linear module of the controller of multi-online air-conditioning system of the present invention;
Fig. 4 is the schematic flow sheet that the present invention starts heating method one embodiment fast;
Fig. 5 is that the present invention starts in heating method the schematic flow sheet that enters accurate holding state fast;
Fig. 6 is that the present invention starts fast compressor in heating method and treats the schematic flow sheet of unit frequency operation with standard;
Fig. 7 is that the present invention starts in heating method the schematic flow sheet that enters holding state fast.
The realization of the object of the invention, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
The specific embodiment
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Referring to Fig. 1, Fig. 1 is the theory of constitution figure of multi-online air-conditioning system of the present invention.This multi-online air-conditioning system comprises some off-premises stations 1 and indoor set 2, in the present embodiment, below describe as an example of the multi-online air-conditioning system that is provided with an off-premises station 1 and an indoor set 2 example, to one skilled in the art, with reference to following explanation, can realize easily the present invention about the controller control principle of multi-online air-conditioning system and start fast heating method being applied to be provided with and for example surpassing an off-premises station 1 and an indoor set 2(, two off-premises stations and three indoor sets) multi-online air-conditioning system, therefore not to repeat here.
in the present embodiment, off-premises station 1 comprises compressor 11, pressure sensor 12, cross valve 13, outdoor heat exchanger 14, off-premises station blower fan 15, outer organic electronic expansion valve 16, magnetic valve 17 and gas-liquid separator 18, the entrance point of magnetic valve 17 is communicated with the pressure duct at compressor 11 refrigerant outlet places, the port of export is communicated with the low pressure line at gas-liquid separator 18 refrigerant inlet places, thereby form a refrigerant circulation loop between compressor 11 and gas-liquid separator 18, in the pressure duct in the exit of pressure sensor 12 access compressor 11 cold-producing mediums, force value for detection of cold-producing medium in the refrigerant circulation loop at magnetic valve 17 places.Indoor set 2 comprises interior organic electronic expansion valve 21, indoor heat exchanger 22 and indoor set blower fan 23.
Referring to Fig. 2, Fig. 2 is the functional block diagram of the controller of multi-online air-conditioning system of the present invention.
The multi-online air-conditioning system that the present embodiment provides, also comprise controller, and this controller comprises:
The first Opportunity awaiting control for linear module 30, be used at multi-online air-conditioning system according to default heating mode running, and when indoor environment temperature reached preset temperature, the control multi-online air-conditioning system moved with accurate standby mode;
Heat control module 40, be used at multi-online air-conditioning system according to accurate standby mode running, when the difference of indoor environment temperature and preset temperature during greater than predetermined threshold value, control multi-online air-conditioning system and enter default heating mode and move;
The second Opportunity awaiting control for linear module 50, be used at multi-online air-conditioning system, controlling multi-online air-conditioning system and entering the standby mode operation when the time with accurate standby mode operation reaches Preset Time according to accurate standby mode running.
in the present embodiment, at first power on to multi-online air-conditioning system, the user sets the parameter that heats of multi-online air-conditioning system according to demand, heat temperature as target, wind speed etc., heating control module 40 starts, shut electromagnetic valve 17, outer organic electronic expansion valve 16 and interior organic electronic expansion valve 21 go to initial opening, compressor 11 starts with original frequency, cross valve 13 powers on, multi-online air-conditioning system enters normal heating mode afterwards, the closed circuit of cold-producing medium is: after compressed machine 11 compressions of cold-producing medium, the cross valve 13 of flowing through successively, indoor heat exchanger 22, interior organic electronic expansion valve 21, outer organic electronic expansion valve 16, outdoor heat exchanger 14, cross valve 13, get back to compressor 11 after entering gas-liquid separator 18, complete once circulation.
In the process of multi-online air-conditioning system operation, temperature sensor in indoor set 2 detects in real time indoor environment temperature and whether reaches preset temperature, the preset temperature that this place refers to be the user while opening multi-online air-conditioning system or the target that in use arranges heat temperature, certainly, can be also that multi-online air-conditioning system specifically heats the preset temperature that heats in program.
When the temperature sensor in indoor set 2 detects indoor environment temperature and reaches preset temperature, for example, preset temperature is 26 ℃, when indoor environment temperature reaches this value, multi-online air-conditioning system should stop heating at once, to prevent the too high situation of indoor environment temperature, thereby reduce user's environmental amenity degree of living in.When indoor environment temperature departed from preset temperature and reaches certain value, multi-online air-conditioning system need restart and heat, and to keep indoor environment temperature, changes within the specific limits.Consider that the environment temperature of opening while heating is lower, when multi-online air-conditioning system starts while heating again, if open indoor set blower fan 23 when system starts, and this moment compressor 11 delivery temperatures and the heat exchanging pipe temperature of indoor set 2 all lower, can blowing cold air; After if the system startup heats, indoor set blower fan 23 delayed start-ups, although can prevent blowing cold air, the time of anti-cold wind is longer.This dual mode all can cause poor user to experience.In order to shorten the time of indoor set 2 anti-cold wind, improve the comfortableness of multi-online air-conditioning system, when indoor environment temperature reaches preset temperature, the first Opportunity awaiting control for linear module 30 is controlled multi-online air-conditioning system and is moved with accurate standby mode, the pressure of compressor 11 refrigerant outlets is remained in certain scope, again start and can avoid cold-producing medium from lower pressure rise to operating pressure while heating, shortened the time of indoor set 2 anti-cold wind, can access user preferably and experience.
When indoor environment temperature being detected and reach preset temperature, controller sends and enters accurate standby mode instruction, controls multi-online air-conditioning system and goes to accurate standby mode by default heating mode.
At this moment, control compressor 11 and treat the unit frequency operation with standard, open magnetic valve 17, cross valve 13 powers on, close outer organic electronic expansion valve 16, interior organic electronic expansion valve 21, off-premises station blower fan 15 and indoor set blower fan 23, thereby the cold-producing medium in refrigerant circulation loop is discharged by compressor 11 blast pipes, enter gas-liquid separator 18 after the magnetic valve 17 of flowing through, the muffler of compressed machine 11 is got back to compressor 11.
When multi-online air-conditioning system goes to accurate standby mode by default heating mode, the running frequency of compressor 11 is in higher state, the force value of the refrigerant outlet of compressor 11 also maintains higher level, therefore compressor 11 is treated the unit frequency operation with lower standard, for example, in the present embodiment, compressor 11 is with the frequency operation of 20Hz, thereby the force value that makes the refrigerant outlet of compressor 11 is down to suitable scope, namely meet multi-online air-conditioning system and open fast the requirement that heats, can reach again the purpose of saving electric energy.The operation of compressor 11 is down to standard after unit frequency, open magnetic valve 17, connect the pressure duct in compressor 11 exits and the low pressure line of gas-liquid separator 18 import departments, cross valve 13 keeps power-up state, then close outer organic electronic expansion valve 16, interior organic electronic expansion valve 21, off-premises station blower fan 15 and indoor set blower fan 23, this moment, the closed circuit of cold-producing medium was: cold-producing medium is discharged by the blast pipe of compressor 11, flow through after magnetic valve 17 and enter gas-liquid separator 18, the muffler of compressed machine 11 is got back to compressor 11, completes once circulation.When multi-online air-conditioning system is in accurate standby mode, compressor 11 is with lower frequency operation, and cold-producing medium is only by getting back to compressor 11 after magnetic valve 17 and gas-liquid separator 18, by heat exchanger and the external world, do not carry out heat exchange, therefore the heat exchange amount is very little, has saved electric energy when the pressure of the refrigerant outlet of keeping compressor 11 is in certain scope, can guarantee that multi-online air-conditioning system starts while heating again, the time of the anti-cold wind of shortening system, improved user's experience.
Referring to Fig. 3, Fig. 3 is the functional block diagram of the first Opportunity awaiting control for linear module of the controller of multi-online air-conditioning system of the present invention.
In the present embodiment, the first Opportunity awaiting control for linear module 30 further comprises:
Pressure sensing cell 31, pressure for detection of the refrigerant outlet of compressor in refrigerant circulation loop, multi-online air-conditioning system is during with the operation of accurate standby mode, and the pressure sensor 12 that is arranged in the pressure duct at compressor 11 refrigerant outlet places detects the pressure of cold-producing medium in real time.
Frequency control unit 32, be used for controlling according to the pressure of the refrigerant outlet that detects the lifting of compressor 11 running frequencies, and the pressure of the refrigerant outlet of compressor 11 is maintained in default pressure limit.
Particularly, the running frequency of the pressure of the refrigerant outlet of compressor 11 and compressor 11 forms the closed-loop control relation, when the pressure that cold-producing medium detected during greater than the higher limit of default pressure limit, reduce the running frequency of compressor 11, the pressure of cold-producing medium is fallen back in default pressure limit, thereby save electric energy; When the pressure that cold-producing medium detected during less than the lower limit of preset pressure scope, the running frequency of rising compressor 11, make the pressure rise of cold-producing medium to default pressure limit, thereby at multi-online air-conditioning system, again start while heating, can raise the fast delivery temperature of compressor 11, shorten time of indoor set 2 anti-cold wind.
In the present embodiment, when the pressure of the refrigerant outlet that compressor 11 detected, during greater than 3.0MPa, control the running frequency of compressor 11 and be down to 20Hz ~ 30 Hz; During less than 2.6MPa, the running frequency of controlling compressor 11 rises to 50Hz ~ 60 Hz when the pressure of the refrigerant outlet that compressor 11 detected.it is emphasized that, default pressure limit and the default corresponding running frequency of pressure limit mentioned in the present embodiment are only concrete embodiments, to one skilled in the art, based on inventive concept, explanation with reference to the present embodiment, default pressure limit and the default pressure limit corresponding running frequency of the multi-online air-conditioning system that can run away with different system parameter during with accurate standby mode operation, for example, default pressure limit can be 2.0MPa ~ 2.8MPa, when the Pressure Drop of cold-producing medium during to 2.0MPa, compressor 11 is with the frequency operation of 45 Hz ~ 50Hz, when the pressure of cold-producing medium rose to 2.8MPa, compressor 11 was with the frequency operation of 30 Hz ~ 35Hz, and therefore not to repeat here.
After multi-online air-conditioning system enters accurate standby mode, detect in real time indoor environment temperature, and the difference of calculating indoor environment temperature and preset temperature,, in order to save the number of times of electric energy and minimizing compressor 11 frequent startings, usually after reaching preset temperature, indoor environment temperature allow indoor environment temperature to change within the specific limits.In the present embodiment, 1 ℃ of preferred predetermined threshold value, for example preset temperature is 26 ℃, allow indoor environment temperature to float in the interval of 25 ℃ ~ 26 ℃, real experiences impact on the user is little, can reduce the heating operation time of multi-online air-conditioning system simultaneously, reaches the purpose of saving electric energy.When the difference of indoor environment temperature and preset temperature is less than or equal to predetermined threshold value, multi-online air-conditioning system is still with accurate standby mode operation, the pressure of the refrigerant outlet of compressor 11 is maintained in certain scope, improve multi-online air-conditioning system and again started speed while heating, shortened the time of the anti-cold wind of system.
In addition, when multi-online air-conditioning system enters accurate standby mode, namely start timing at every turn, and judge whether multi-online air-conditioning system reaches Preset Time with the time of accurate standby mode operation.Tested the test data that draws by multi-online air-conditioning system as can be known under comprehensive operating mode; the Preset Time of the present embodiment is preferably 3min; within this time; the indoor environment temperature 1 ℃ of left and right that usually can descend under field conditions (factors); and multi-online air-conditioning system need restart and heated this moment; keep indoor environment temperature in certain temperature range, the multi-online air-conditioning system that therefore is in accurate standby mode can be opened and heat fast, and the user is experienced preferably.
yet, better in indoor sealing thermal insulation effect, in the less situation of indoor/outdoor temperature-difference, the decrease speed of indoor environment temperature is often slower, therefore it is longer that multi-online air-conditioning system is in time of accurate standby mode state, in order to save the service life of electric energy and prolongation compressor 11, when the time that multi-online air-conditioning system moves with accurate standby mode reaches Preset Time, for example, while reaching 3min, control multi-online air-conditioning system by the second Opportunity awaiting control for linear module 50 and go to standby mode, can embody better the high energy efficiency ratio of multi-online air-conditioning system like this, meet the demand of environmental protection and energy saving.
After multi-online air-conditioning system goes to standby mode, close compressor 11, cross valve 13, magnetic valve 17, outer organic electronic expansion valve 16, interior organic electronic expansion valve 21, off-premises station blower fan 15 and indoor set blower fan 23.
In the present embodiment, in the process of multi-online air-conditioning system according to the standby mode operation, detect in real time indoor environment temperature, and the difference of calculating indoor environment temperature and preset temperature, judge that whether this difference is greater than predetermined threshold value,, if while being less than or equal to predetermined threshold value, control multi-online air-conditioning system still according to current standby mode operation; , if this difference during greater than predetermined threshold value, is controlled multi-online air-conditioning system and entered default heating mode, keep indoor environment temperature within certain scope.
particularly, heat control module 40 transmission startups and heat instruction, outer organic electronic expansion valve 16, interior organic electronic expansion valve 21 goes to and heats initial opening, compressor 11 goes to and heats original frequency, cross valve 13 powers on, shut electromagnetic valve 17, multi-online air-conditioning system enters default heating mode afterwards, this moment, the closed circuit of cold-producing medium was: after compressed machine 11 compressions of cold-producing medium, the cross valve 13 of flowing through successively, indoor heat exchanger 22, interior organic electronic expansion valve 21, outer organic electronic expansion valve 16, outdoor heat exchanger 14, cross valve 13, get back to compressor 11 after entering gas-liquid separator 18, complete once circulation.
accordingly, a kind of multi-online air-conditioning system provided by the present invention, by being provided with magnetic valve between the pressure duct at cold-producing medium and low pressure line, when indoor environment temperature reaches default temperature, controlling multi-online air-conditioning system moves with accurate standby mode, opens solenoid valve, cold-producing medium is circulated between compressor and gas-liquid separator, control simultaneously the volume output of frequency-changeable compressor, the pressure of compressor refrigerant outlet is remained in certain scope, when indoor environment temperature departs from default temperature range, multi-online air-conditioning system starts while heating again can avoid cold-producing medium from lower pressure rise to operating pressure, shortened the time of the anti-cold wind of indoor set, can access user preferably experiences.In addition, the present invention also enters the time of accurate standby mode operation by setting multi-online air-conditioning system, when the time that enters accurate standby mode operation reaches preset value, control multi-online air-conditioning system and enter standby mode, close compressor, thus reach the purpose of saving electric energy.
The present invention also provides a kind of quick startup heating method that is applicable to multi-online air-conditioning system.
Referring to Fig. 4, Fig. 4 is the schematic flow sheet that the present invention starts heating method one embodiment fast.
The method that the quick startup that the present embodiment provides heats comprises step:
Step S10, multi-online air-conditioning system is with default heating mode operation.
in this step S10, at first power on to multi-online air-conditioning system, the user sets the parameter that heats of multi-online air-conditioning system according to demand, heat temperature as target, wind speed etc., shut electromagnetic valve 17, outer organic electronic expansion valve 16 and interior organic electronic expansion valve 21 go to initial opening, compressor 11 starts with original frequency, cross valve 13 powers on, multi-online air-conditioning system enters normal heating mode afterwards, the closed circuit of cold-producing medium is: after compressed machine 11 compressions of cold-producing medium, the cross valve 13 of flowing through successively, indoor heat exchanger 22, interior organic electronic expansion valve 21, outer organic electronic expansion valve 16, outdoor heat exchanger 14, cross valve 13, get back to compressor 11 after entering gas-liquid separator 18, complete once circulation.
Step S11, judge whether indoor environment temperature reaches preset temperature.
In this step S11, temperature sensor in indoor set 2 detects in real time indoor environment temperature and whether reaches preset temperature, the preset temperature that this place refers to be the user while opening multi-online air-conditioning system or the target that in use arranges heat temperature, certainly, can be also that multi-online air-conditioning system specifically heats the preset temperature that heats in program.
Step S12, when indoor environment temperature reaches preset temperature, with accurate standby mode operation.
In this step S12, when the temperature sensor in indoor set 2 detects indoor environment temperature and reaches preset temperature, for example, preset temperature is 26 ℃, when indoor environment temperature reaches this value, multi-online air-conditioning system should stop heating at once, to prevent the too high situation of indoor environment temperature, thereby reduces user's environmental amenity degree of living in.When indoor environment temperature departed from preset temperature and reaches certain value, multi-online air-conditioning system need restart and heat, and to keep indoor environment temperature, changes within the specific limits.Consider that the environment temperature of opening while heating is lower,, when multi-online air-conditioning system starts while heating again, namely open indoor set blower fan 23, and this moment compressor 11 delivery temperatures and the heat exchanging pipe temperature of indoor set 2 all lower, can blowing cold air; After if the system startup heats, indoor set blower fan 23 delayed start-ups, although can prevent blowing cold air, the time of anti-cold wind is longer.This dual mode all can cause poor user to experience.In order to shorten the time of indoor set 2 anti-cold wind, improve the comfortableness of multi-online air-conditioning system, when indoor environment temperature reaches preset temperature, controlling multi-online air-conditioning system moves with accurate standby mode, the pressure of compressor 11 refrigerant outlets is remained in certain scope, again start and can avoid cold-producing medium from lower pressure rise to operating pressure while heating, shortened the time of indoor set 2 anti-cold wind, can access user preferably and experience.
Referring to Fig. 5, Fig. 5 is that the present invention starts in heating method the schematic flow sheet that enters accurate holding state fast.
In the present embodiment, step S12 specifically comprises:
Step S121, send and enter accurate standby mode instruction;
In this step S121, when indoor environment temperature being detected and reach preset temperature, the controller (not shown) sends and enters accurate standby mode instruction, controls multi-online air-conditioning system and goes to accurate standby mode by default heating mode.
Step S122, control compressor 11 and treat the unit frequency operation with standard, opens magnetic valve 17, and cross valve 13 powers on, and closes outer organic electronic expansion valve 16, interior organic electronic expansion valve 21, off-premises station blower fan 15 and indoor set blower fan 23.
In this step S122, when multi-online air-conditioning system goes to accurate standby mode by default heating mode, the running frequency of compressor 11 also is in higher state, the force value of the refrigerant outlet of compressor 11 maintains higher level, therefore compressor 11 is treated the unit frequency operation with lower standard, for example, in the present embodiment, compressor 11 is with the frequency operation of 20Hz, thereby the force value that makes the refrigerant outlet of compressor 11 is down to suitable scope, namely meet multi-online air-conditioning system and start fast the requirement that heats, can reach again the purpose of saving electric energy.The operation of compressor 11 is down to standard after unit frequency, open magnetic valve 17, connect the pressure duct in compressor 11 exits and the low pressure line of gas-liquid separator 18 import departments, cross valve 13 keeps power-up state, then close outer organic electronic expansion valve 16, interior organic electronic expansion valve 21, off-premises station blower fan 15 and indoor set blower fan 23, this moment, the closed circuit of cold-producing medium was: cold-producing medium is discharged by the blast pipe of compressor 11, flow through after magnetic valve 17 and enter gas-liquid separator 18, the muffler of compressed machine 11 is got back to compressor 11, completes once circulation.When multi-online air-conditioning system is in accurate standby mode, compressor 11 is with lower frequency operation, and cold-producing medium is only by getting back to compressor 11 after magnetic valve 17 and gas-liquid separator 18, by heat exchanger and the external world, do not carry out heat exchange, therefore the heat exchange amount is very little, has saved electric energy when the pressure of the refrigerant outlet of keeping compressor 11 is in certain scope, can guarantee that multi-online air-conditioning system starts while heating again, the time of the anti-cold wind of shortening system, improved user's experience.
Referring to Fig. 6, Fig. 6 is that the present invention starts fast compressor in heating method and treats the schematic flow sheet of unit frequency operation with standard.
In the present embodiment, step S122 specifically comprises:
Step S1221, the pressure of the refrigerant outlet of compressor 11 in the detection refrigerant circulation loop;
In this step S1221, multi-online air-conditioning system is during with the operation of accurate standby mode, and the pressure sensor 12 that is arranged in the pressure duct at refrigerant outlet place of compressor 11 detects the pressure of cold-producing medium in real time.
Step S1222, control the lifting of compressor 11 running frequencies according to the pressure of the refrigerant outlet that detects, the pressure of the refrigerant outlet of compressor is maintained in default pressure limit.
In this step S1222, the running frequency of the pressure of the refrigerant outlet of compressor 11 and compressor 11 forms the closed-loop control relation, when the pressure that cold-producing medium detected during greater than the higher limit of default pressure limit, reduce the running frequency of compressor 11, the pressure of cold-producing medium is fallen back in default pressure limit, thereby save electric energy; When the pressure that cold-producing medium detected during less than the lower limit of preset pressure scope, the running frequency of rising compressor 11, make the pressure rise of cold-producing medium to default pressure limit, thereby at multi-online air-conditioning system, again start while heating, can raise the fast delivery temperature of compressor 11, shorten time of indoor set 2 anti-cold wind.
Particularly,, control the running frequency of compressor 11 and be down to 20Hz ~ 30 Hz during greater than 3.0MPa when the pressure of the refrigerant outlet that compressor 11 detected; During less than 2.6MPa, the running frequency of controlling compressor 11 rises to 50Hz ~ 60 Hz when the pressure of the refrigerant outlet that compressor 11 detected.it is emphasized that, default pressure limit and the default corresponding running frequency of pressure limit mentioned in the present embodiment are only concrete embodiments, to one skilled in the art, based on inventive concept, explanation with reference to the present embodiment, default pressure limit and the default pressure limit corresponding running frequency of the multi-online air-conditioning system that can run away with different system parameter during with accurate standby mode operation, for example, default pressure limit can be 2.0MPa ~ 2.8MPa, when the Pressure Drop of cold-producing medium during to 2.0MPa, compressor 11 is with the frequency operation of 45 Hz ~ 50Hz, when the pressure of cold-producing medium rose to 2.8MPa, compressor 11 was with the frequency operation of 30 Hz ~ 35Hz, and therefore not to repeat here.
Step S13, judge that whether the difference of indoor environment temperature and preset temperature is greater than predetermined threshold value.
In this step S13, after multi-online air-conditioning system enters accurate standby mode, detect in real time indoor environment temperature, and the difference of calculating indoor environment temperature and preset temperature,, in order to save the number of times of electric energy and minimizing compressor 11 frequent startings, usually after reaching preset temperature, indoor environment temperature allow indoor environment temperature to change within the specific limits.In the present embodiment, preferred predetermined threshold value is 1 ℃, and for example preset temperature is 26 ℃, allow indoor environment temperature to float in the interval of 25 ℃ ~ 26 ℃, real experiences impact on the user is little, can reduce the heating operation time of multi-online air-conditioning system simultaneously, reaches the purpose of saving electric energy.When the difference of indoor environment temperature and preset temperature is less than or equal to predetermined threshold value, multi-online air-conditioning system is still with accurate standby mode operation, the pressure of the refrigerant outlet of compressor is maintained in certain scope, improve multi-online air-conditioning system and again started speed while heating, shortened the time of the anti-cold wind of system.
Step S14, whether judgement reaches Preset Time with the time of accurate standby mode operation.
In this step S14, when multi-online air-conditioning system enters accurate standby mode, namely start timing at every turn, and judge whether multi-online air-conditioning system reaches Preset Time with the time of accurate standby mode operation.Tested the test data that draws by multi-online air-conditioning system as can be known under comprehensive operating mode; the Preset Time of the present embodiment is preferably 3min; within this time; the indoor environment temperature 1 ℃ of left and right that usually can descend under field conditions (factors); and multi-online air-conditioning system need restart and heated this moment; keep indoor environment temperature in certain temperature range, the multi-online air-conditioning system that therefore is in accurate standby mode can start and heat fast, and the user is experienced preferably.
Step S15, when the time with accurate standby mode operation reaches Preset Time, enter standby mode.
In this step S15, in the situation that indoor sealing thermal insulation effect is better, indoor/outdoor temperature-difference is less, the decrease speed of indoor environment temperature is often slower, therefore it is longer that multi-online air-conditioning system is in time of accurate standby mode state, in order to save the service life of electric energy and prolongation compressor, when the time that multi-online air-conditioning system moves with accurate standby mode reaches Preset Time, for example, while reaching 3min, control multi-online air-conditioning system and go to standby mode, can embody better the high energy efficiency ratio of multi-online air-conditioning system like this, meet the demand of environmental protection and energy saving.
Referring to Fig. 7, Fig. 7 is that the present invention starts in heating method the schematic flow sheet that enters holding state fast.
In the present embodiment, step S15 specifically comprises:
Step S151, send and enter the standby mode instruction;
In this step S151, when the time with accurate standby mode operation reached Preset Time, controller sent and enters the standby mode instruction, controlled multi-online air-conditioning system and went to standby mode by accurate standby mode.
Step S152, close compressor 11, cross valve 13, magnetic valve 17, outer organic electronic expansion valve 16, interior organic electronic expansion valve 21, off-premises station blower fan 15 and indoor set blower fan 23.
It is emphasized that, in the present embodiment, in the process of multi-online air-conditioning system according to the standby mode operation, detect in real time indoor environment temperature, and the difference of calculating indoor environment temperature and preset temperature, whether judge this difference greater than predetermined threshold value, if while being less than or equal to predetermined threshold value, multi-online air-conditioning system is still according to current standby mode operation; , if this difference during greater than predetermined threshold value, is controlled multi-online air-conditioning system and entered default heating mode, keep indoor environment temperature within certain scope.
accordingly, a kind of quick startup heating method that is applicable to multi-online air-conditioning system provided by the present invention, by being provided with magnetic valve between the pressure duct at cold-producing medium and low pressure line, when indoor environment temperature reaches default temperature, controlling multi-online air-conditioning system moves with accurate standby mode, opens solenoid valve, cold-producing medium is circulated between compressor and gas-liquid separator, control simultaneously the volume output of frequency-changeable compressor, the pressure of compressor refrigerant outlet is remained in certain scope, when indoor environment temperature departs from default temperature range, multi-online air-conditioning system starts while heating again can avoid cold-producing medium from lower pressure rise to operating pressure, shortened the time of the anti-cold wind of indoor set, can access user preferably experiences.In addition, the present invention also enters the time of accurate standby mode operation by setting multi-online air-conditioning system, when the time that enters accurate standby mode operation reaches preset value, control multi-online air-conditioning system and enter standby mode, close compressor, thus reach the purpose of saving electric energy.
Should be understood that; these are only the preferred embodiments of the present invention; can not therefore limit the scope of the claims of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present invention.
Claims (12)
1. multi-online air-conditioning system, comprise some off-premises stations and indoor set, described off-premises station comprises controller, compressor, cross valve, magnetic valve, outer organic electronic expansion valve, interior organic electronic expansion valve, off-premises station blower fan, indoor set blower fan, it is characterized in that, described controller comprises:
The first Opportunity awaiting control for linear module, be used at multi-online air-conditioning system according to default heating mode running, and when indoor environment temperature reached preset temperature, the control multi-online air-conditioning system moved with accurate standby mode;
Heat control module, be used at multi-online air-conditioning system according to accurate standby mode running, when the difference of described indoor environment temperature and described preset temperature during greater than predetermined threshold value, control multi-online air-conditioning system and enter described default heating mode and move;
The second Opportunity awaiting control for linear module, be used at multi-online air-conditioning system, controlling multi-online air-conditioning system and entering the standby mode operation when the time with described accurate standby mode operation reaches Preset Time according to accurate standby mode running.
2. multi-online air-conditioning system according to claim 1, it is characterized in that, the described control module that heats also is used at multi-online air-conditioning system according to described standby mode running,, control multi-online air-conditioning system and enter described default heating mode operation during greater than described predetermined threshold value when the difference of described indoor environment temperature and described preset temperature.
3. multi-online air-conditioning system according to claim 1, is characterized in that, described the first Opportunity awaiting control for linear module controls multi-online air-conditioning system comprises with the step of accurate standby mode operation:
Control compressor and treat the unit frequency operation with standard, open magnetic valve, cross valve powers on, close outer organic electronic expansion valve, interior organic electronic expansion valve, off-premises station blower fan and indoor set blower fan, discharged by compressor exhaust pipe with the cold-producing medium in the refrigerant circulation loop of controlling multi-online air-conditioning system, flow through after magnetic valve and enter gas-liquid separator, compressed machine muffler is got back to compressor.
4. multi-online air-conditioning system according to claim 3, is characterized in that, described the first Opportunity awaiting control for linear module comprises:
Pressure sensing cell, for detection of the pressure of the refrigerant outlet of compressor in described refrigerant circulation loop;
Frequency control unit, be used for controlling according to the pressure of the refrigerant outlet that detects the lifting of compressor operating frequency, and the pressure of the refrigerant outlet of described compressor is maintained in default pressure limit.
5. multi-online air-conditioning system according to claim 4, is characterized in that, described frequency control module specifically is used for:
, control the running frequency of compressor and be down to 20Hz ~ 30 Hz during greater than 3.0MPa when the pressure of the refrigerant outlet that compressor detected;
During less than 2.6MPa, the running frequency of controlling compressor rises to 50Hz ~ 60 Hz when the pressure of the refrigerant outlet that compressor detected.
6. multi-online air-conditioning system according to claim 1, is characterized in that, the step that described the second Opportunity awaiting control for linear module controls multi-online air-conditioning system enters the standby mode operation comprises:
Close compressor, cross valve, magnetic valve, outer organic electronic expansion valve, interior organic electronic expansion valve, off-premises station blower fan and indoor set blower fan.
7. one kind starts heating method fast, and the method is applicable to comprise the multi-online air-conditioning system of accurate standby mode, standby mode and default heating mode, it is characterized in that, the method comprises the following steps:
Multi-online air-conditioning system according to described default heating mode running in, when indoor environment temperature reaches preset temperature, control multi-online air-conditioning system with described accurate standby mode operation;
Multi-online air-conditioning system according to described accurate standby mode running in,, control multi-online air-conditioning system and enter described default heating mode operation during greater than predetermined threshold value when the difference of described indoor environment temperature and described preset temperature;
Multi-online air-conditioning system according to described accurate standby mode running in, when the time with described accurate standby mode operation reaches Preset Time, control multi-online air-conditioning system and enter described standby mode operation.
8. quick startup heating method according to claim 7, it is characterized in that, described multi-online air-conditioning system according to described accurate standby mode running in, when the time with described accurate standby mode operation reached Preset Time, the step that the control multi-online air-conditioning system enters described standby mode operation also comprised afterwards:
Multi-online air-conditioning system according to described standby mode running in,, control multi-online air-conditioning system and enter described default heating mode operation during greater than described predetermined threshold value when the difference of described indoor environment temperature and described preset temperature.
9. quick startup heating method according to claim 7, is characterized in that, described control multi-online air-conditioning system comprises with the step of described accurate standby mode operation:
Control compressor and treat the unit frequency operation with standard, open magnetic valve, cross valve powers on, close outer organic electronic expansion valve, interior organic electronic expansion valve, off-premises station blower fan and indoor set blower fan, discharged by compressor exhaust pipe with the cold-producing medium in the refrigerant circulation loop of controlling multi-online air-conditioning system, flow through after magnetic valve and enter gas-liquid separator, compressed machine muffler is got back to compressor.
10. quick startup heating method according to claim 9, is characterized in that, described control compressor treats that with standard the step of unit frequency operation comprises:
Detect the pressure of the refrigerant outlet of compressor in described refrigerant circulation loop;
Control the lifting of compressor operating frequency according to the pressure of the refrigerant outlet that detects, the pressure of the refrigerant outlet of described compressor is maintained in default pressure limit.
11. quick startup heating method according to claim 10, it is characterized in that, the pressure of described refrigerant outlet according to detecting is controlled the lifting of compressor operating frequency, and the step that the pressure of the refrigerant outlet of described compressor maintains in default pressure limit is comprised:
, control the running frequency of compressor and be down to 20Hz ~ 30 Hz during greater than 3.0MPa when the pressure of the refrigerant outlet that compressor detected;
During less than 2.6MPa, the running frequency of controlling compressor rises to 50Hz ~ 60 Hz when the pressure of the refrigerant outlet that compressor detected.
12. quick startup heating method according to claim 7, is characterized in that, the step that described control multi-online air-conditioning system enters described standby mode operation comprises:
Close compressor, cross valve, magnetic valve, outer organic electronic expansion valve, interior organic electronic expansion valve, off-premises station blower fan and indoor set blower fan.
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