CN103388856B - Multi-online air-conditioning system and start heating method fast - Google Patents
Multi-online air-conditioning system and start heating method fast Download PDFInfo
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- CN103388856B CN103388856B CN201310304030.7A CN201310304030A CN103388856B CN 103388856 B CN103388856 B CN 103388856B CN 201310304030 A CN201310304030 A CN 201310304030A CN 103388856 B CN103388856 B CN 103388856B
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Abstract
The invention discloses a kind of multi-online air-conditioning system.When indoor environment temperature reaches default temperature, the controller of this multi-online air-conditioning system runs with accurate standby mode by controlling multi-online air-conditioning system, cold-producing medium is circulated between compressor and gas-liquid separator, control the volume output of compressor simultaneously, the pressure of the refrigerant outlet of compressor is made to remain in certain scope, therefore, cold-producing medium can be avoided from lower pressure increase to operating pressure when multi-online air-conditioning system again starts and heats, shorten the time of the anti-cold wind of indoor set, good Consumer's Experience can be obtained.In addition, this controller also enters the time of accurate standby mode operation by setting multi-online air-conditioning system, when the time entering the operation of accurate standby mode reaches preset value, control multi-online air-conditioning system and enter standby mode, close compressor, thus reach the object of saving electric energy.The present invention also provides a kind of quick startup heating method being applicable to multi-online air-conditioning 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 heating method fast.
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 feature, it integrates the technology such as frequency conversion, transfiguration, have use energy-conservation, comfortable, control the advantages such as flexible, by the combination of different capabilities unit with arrange the requirement that can meet different scales building.
The application of multi-connected machine in the live and work environment of people is more and more universal, thus people require more and more higher to the comfortableness of air-conditioning system.Open at multi-online air-conditioning system in the process heated; when the room temperature that indoor set detects is greater than design temperature; then compressor shutdown; when the room temperature that indoor set detects is less than design temperature; then compressor starts again, and this is multi-online air-conditioning system conventional at present controls air conditioning capacity output control method by the temperature difference.
As mentioned above, multi-connected machine maintains indoor temperature by the start and stop controlling compressor in the process heated to be changed within the specific limits, the drawback of this control method be compressor when again starting compressor exhaust temperature lower, indoor set line temperature is also lower, therefore 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 normal could be opened and heat, and this control model that heats can cause compressor again to start indoor machine during heating anti-cold wind time longer problem.
Summary of the invention
Main purpose of the present invention is provide a kind of multi-online air-conditioning system and start heating method fast, is intended to shorten the time that multi-online air-conditioning system starts the anti-cold wind of indoor machine during heating again, improves Consumer's Experience, saves electric energy simultaneously.
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:
First standby control module, at multi-online air-conditioning system according in default heating mode running, when indoor environment temperature reaches preset temperature, control multi-online air-conditioning system run with accurate standby mode;
Heat control module, at multi-online air-conditioning system according in accurate standby mode running, when the difference of described indoor environment temperature and described preset temperature is greater than predetermined threshold value, controls multi-online air-conditioning system and enter described default heating mode and run;
Second standby control module, at multi-online air-conditioning system according in accurate standby mode running, when the time run with described accurate standby mode reaches Preset Time, control multi-online air-conditioning system and enter standby mode and run.
Preferably, described heat control module also at multi-online air-conditioning system according in described standby mode running, when the difference of described indoor environment temperature and described preset temperature is greater than described predetermined threshold value, controls multi-online air-conditioning system and enter described default heating mode and run.
Preferably, the step that described first standby control module control multi-online air-conditioning system runs with accurate standby mode comprises: control compressor and run with accurate standby frequency, 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 controlled in the refrigerant circulation loop of multi-online air-conditioning system, enter gas-liquid separator after flowing through magnetic valve, get back to compressor through compressor muffler.
Preferably, described first standby control module comprises: pressure sensing cell, for detecting the pressure of the refrigerant outlet of compressor in described refrigerant circulation loop; Frequency control unit, for the lifting of the Stress control compressor operating frequency according to the refrigerant outlet detected, makes the pressure of the refrigerant outlet of described compressor maintain in default pressure limit.
Preferably, described frequency control unit specifically for: when the pressure of refrigerant outlet compressor being detected is greater than 3.0MPa, then the running frequency controlling compressor is down to 20Hz ~ 30Hz; When the pressure of refrigerant outlet compressor being detected is less than 2.6MPa, then the running frequency controlling compressor rises to 50Hz ~ 60Hz.
Preferably, the step that described second standby control module control multi-online air-conditioning system enters 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 one simultaneously and starts heating method fast, and the method is applicable to the multi-online air-conditioning system comprising accurate standby mode, standby mode and default heating mode, and the method comprises the following steps:
At multi-online air-conditioning system according in described default heating mode running, when indoor environment temperature reaches preset temperature, control multi-online air-conditioning system and run with described accurate standby mode;
At multi-online air-conditioning system according in described accurate standby mode running, when the difference of described indoor environment temperature and described preset temperature is greater than predetermined threshold value, controls multi-online air-conditioning system and enter described default heating mode and run;
At multi-online air-conditioning system according in described accurate standby mode running, when the time run with described accurate standby mode reaches Preset Time, control multi-online air-conditioning system and enter the operation of described standby mode.
Preferably, described at multi-online air-conditioning system according in described accurate standby mode running, when the time run with described accurate standby mode reaches Preset Time, control also to comprise after multi-online air-conditioning system enters the step of described standby mode operation: at multi-online air-conditioning system according in described standby mode running, when the difference of described indoor environment temperature and described preset temperature is greater than described predetermined threshold value, controls multi-online air-conditioning system and enter described default heating mode and run.
Preferably, the step that described control multi-online air-conditioning system runs with described accurate standby mode comprises: control compressor and run with accurate standby frequency, 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 controlled in the refrigerant circulation loop of multi-online air-conditioning system, after flowing through magnetic valve, enter gas-liquid separator, get back to compressor through compressor muffler.
Preferably, the step that described control compressor runs with accurate standby frequency comprises: the pressure detecting the refrigerant outlet of compressor in described refrigerant circulation loop; According to the lifting of the Stress control compressor operating frequency of the refrigerant outlet detected, the pressure of the refrigerant outlet of described compressor is maintained in default pressure limit.
Preferably, the lifting of the Stress control compressor operating frequency of the described refrigerant outlet according to detecting, the step that the pressure of the refrigerant outlet of described compressor is maintained in default pressure limit comprises: when the pressure of refrigerant outlet compressor being detected is greater than 3.0MPa, then the running frequency controlling compressor is down to 20Hz ~ 30Hz; When the pressure of refrigerant outlet compressor being detected is less than 2.6MPa, then the running frequency controlling compressor rises to 50Hz ~ 60Hz.
Preferably, described control multi-online air-conditioning system enter described standby mode run step comprise: 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 heating method fast, by being provided with magnetic valve between the pressure duct and low pressure line of cold-producing medium, when indoor environment temperature reaches default temperature, control multi-online air-conditioning system to run with accurate standby mode, opens solenoid valve, cold-producing medium is circulated between compressor and gas-liquid separator, control the volume output of compressor simultaneously, the pressure of the refrigerant outlet of compressor is made to remain in certain scope, when indoor environment temperature departs from default temperature range, multi-online air-conditioning system starts when heating again can avoid cold-producing medium from lower pressure increase to operating pressure, shorten the time of the anti-cold wind of indoor set, good Consumer's Experience can be obtained.In addition, the present invention also enters the time of accurate standby mode operation by setting multi-online air-conditioning system, when the time entering the operation of accurate standby mode reaches preset value, control multi-online air-conditioning system and enter standby mode, close compressor, thus reach the object of saving electric energy.
Accompanying drawing explanation
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 standby control 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 entering accurate holding state fast;
Fig. 6 is the schematic flow sheet that the present invention starts that in heating method, compressor runs with accurate standby frequency fast;
Fig. 7 is that the present invention starts in heating method the schematic flow sheet entering holding state fast.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
See the theory of constitution figure that Fig. 1, Fig. 1 are multi-online air-conditioning systems of the present invention.This multi-online air-conditioning system comprises some off-premises stations 1 and indoor set 2, in the present embodiment, be described for the multi-online air-conditioning system being provided with an off-premises station 1 and an indoor set 2 below, to one skilled in the art, with reference to following explanation, can realize the present invention easily about the controller control principle of multi-online air-conditioning system and start fast heating method and be applied to and be provided with more than an off-premises station 1 and an indoor set 2 (such as, 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 place, the port of export is communicated with the low pressure line at gas-liquid separator 18 refrigerant inlet place, thus a refrigerant circulation loop is formed between compressor 11 and gas-liquid separator 18, pressure sensor 12 accesses in the pressure duct in the exit of compressor 11 cold-producing medium, for detect magnetic valve 17 place refrigerant circulation loop in the force value of cold-producing medium.Indoor set 2 comprises interior organic electronic expansion valve 21, indoor heat exchanger 22 and indoor set blower fan 23.
It is the functional block diagram of the controller of multi-online air-conditioning system of the present invention see Fig. 2, Fig. 2.
The multi-online air-conditioning system that the present embodiment provides, also comprises controller, and this controller comprises:
First standby control module 30, at multi-online air-conditioning system according in default heating mode running, when indoor environment temperature reaches preset temperature, control multi-online air-conditioning system run with accurate standby mode;
Heat control module 40, at multi-online air-conditioning system according in accurate standby mode running, when the difference of indoor environment temperature and preset temperature is greater than predetermined threshold value, controls multi-online air-conditioning system and enter default heating mode and run;
Second standby control module 50, at multi-online air-conditioning system according in accurate standby mode running, when the time run with accurate standby mode reaches Preset Time, control multi-online air-conditioning system enter standby mode run.
In the present embodiment, first power on to multi-online air-conditioning system, what user set multi-online air-conditioning system according to demand heats parameter, as target heats temperature, wind speed etc., heat control module 40 to start, 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: cold-producing medium is after compressor 11 compresses, flow through cross valve 13 successively, indoor heat exchanger 22, interior organic electronic expansion valve 21, outer organic electronic expansion valve 16, outdoor heat exchanger 14, cross valve 13, compressor 11 is got back to after entering gas-liquid separator 18, complete and once circulate.
In the process that multi-online air-conditioning system runs, temperature sensor in indoor set 2 detects indoor environment temperature in real time and whether reaches preset temperature, the preset temperature that this place refers to be user when opening multi-online air-conditioning system or the target in use arranged heat temperature, certainly, also can be that multi-online air-conditioning system specifically heats and presetly in program heats temperature.
When the temperature sensor in indoor set 2 detects that indoor environment temperature reaches preset temperature, such as, preset temperature is 26 DEG C, 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, thus reduce environmental amenity degree residing for user.When indoor environment temperature depart from preset temperature reach certain value time, multi-online air-conditioning system need restart and heat, and changes within the specific limits to maintain indoor environment temperature.Consider that the environment temperature of opening when heating is lower, when multi-online air-conditioning system again start heat time, if open indoor set blower fan 23 when system starts, and now the heat exchanging pipe temperature of compressor 11 delivery temperature and indoor set 2 is all lower, then can blowing cold air; If after system startup heats, indoor set blower fan 23 delayed start-up, although can prevent blowing cold air, the time of anti-cold wind is longer.These two kinds of modes all can cause poor Consumer's Experience.In order to shorten the time of the anti-cold wind of indoor set 2, improve the comfortableness of multi-online air-conditioning system, when indoor environment temperature reaches preset temperature, first standby control module 30 controls multi-online air-conditioning system and runs with accurate standby mode, the pressure of compressor 11 refrigerant outlet is made to remain in certain scope, again starting when heating to avoid cold-producing medium from lower pressure increase to operating pressure, shortens the time of the anti-cold wind of indoor set 2, can obtain good Consumer's Experience.
When detecting that indoor environment temperature reaches preset temperature, controller sends and enters accurate standby mode instruction, controls multi-online air-conditioning system and goes to accurate standby mode by presetting heating mode.
Now, control compressor 11 to run with accurate standby frequency, 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, thus the cold-producing medium in refrigerant circulation loop is discharged by compressor 11 blast pipe, enter gas-liquid separator 18 after flowing through magnetic valve 17, the muffler through compressor 11 gets back to compressor 11.
Multi-online air-conditioning system is in higher state by presetting the running frequency of compressor 11 when heating mode goes to accurate standby mode, the force value of the refrigerant outlet of compressor 11 also maintains higher level, therefore compressor 11 runs with lower accurate standby frequency, such as, in the present embodiment, compressor 11 runs with the frequency of 20Hz, thus make the force value of the refrigerant outlet of compressor 11 be down to suitable scope, namely meet multi-online air-conditioning system and open the requirement heated fast, the object of saving electric energy can be reached again.After accurate standby frequency is down in the operation of compressor 11, open magnetic valve 17, connect the pressure duct in compressor 11 exit and the low pressure line of gas-liquid separator 18 import department, cross valve 13 keeps power-up state, then outer organic electronic expansion valve 16, interior organic electronic expansion valve 21, off-premises station blower fan 15 and indoor set blower fan 23 is closed, now the closed circuit of cold-producing medium is: cold-producing medium is discharged by the blast pipe of compressor 11, gas-liquid separator 18 is entered after flowing through magnetic valve 17, muffler through compressor 11 gets back to compressor 11, completes and once circulates.When multi-online air-conditioning system is in accurate standby mode, compressor 11 runs with lower frequency, and cold-producing medium gets back to compressor 11 by means of only after magnetic valve 17 and gas-liquid separator 18, heat exchange is not carried out by heat exchanger and the external world, therefore heat exchange amount is very little, while the pressure of refrigerant outlet maintaining compressor 11 is in certain scope, save electric energy, can ensure that multi-online air-conditioning system starts when heating again, the time of the anti-cold wind of shortening system, improve Consumer's Experience.
It is the functional block diagram of the first standby control module of the controller of multi-online air-conditioning system of the present invention see Fig. 3, Fig. 3.
In the present embodiment, the first standby control module 30 comprises further:
Pressure sensing cell 31, for detecting the pressure of the refrigerant outlet of compressor in refrigerant circulation loop, when multi-online air-conditioning system runs with accurate standby mode, the pressure sensor 12 be arranged in the pressure duct at compressor 11 refrigerant outlet place detects the pressure of cold-producing medium in real time.
Frequency control unit 32, for the lifting of Stress control compressor 11 running frequency according to the refrigerant outlet detected, makes the pressure of the refrigerant outlet of compressor 11 maintain in default pressure limit.
Particularly, the pressure of the refrigerant outlet of compressor 11 and the running frequency of compressor 11 form closed-loop control relation, when detecting that the pressure of cold-producing medium is 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, thus saves electric energy; When detecting that the pressure of cold-producing medium is less than the lower limit of preset pressure scope, raise the running frequency of compressor 11, make the pressure increase of cold-producing medium in the pressure limit preset, thus multi-online air-conditioning system again start heat time, the delivery temperature of compressor 11 can be raised fast, shorten the time of the anti-cold wind of indoor set 2.
In the present embodiment, when the pressure of refrigerant outlet compressor 11 being detected is greater than 3.0MPa, then the running frequency controlling compressor 11 is down to 20Hz ~ 30Hz; When the pressure of refrigerant outlet compressor 11 being detected is less than 2.6MPa, then the running frequency controlling compressor 11 rises to 50Hz ~ 60Hz.It is emphasized that, the pressure limit preset mentioned in the present embodiment and the running frequency corresponding to default pressure limit are only concrete embodiments, to one skilled in the art, based on inventive concept, with reference to the explanation of the present embodiment, the multi-online air-conditioning system of different system parameter can be run away with the pressure limit preset during accurate standby mode operation and the running frequency corresponding to default pressure limit, such as, the pressure limit preset can be 2.0MPa ~ 2.8MPa, when the Pressure Drop of cold-producing medium is to 2.0MPa, compressor 11 runs with the frequency of 45Hz ~ 50Hz, when the pressure of cold-producing medium rises to 2.8MPa, compressor 11 runs with the frequency of 30Hz ~ 35Hz, and therefore not to repeat here.
After multi-online air-conditioning system enters accurate standby mode, real-time detection indoor environment temperature, and calculate the difference of indoor environment temperature and preset temperature, in order to save the number of times of electric energy and minimizing compressor 11 frequent starting, after indoor environment temperature reaches preset temperature, indoor environment temperature is usually allowed to change within the specific limits.In the present embodiment, preferred predetermined threshold value 1 DEG C, such as preset temperature is 26 DEG C, indoor environment temperature is then allowed to float in the interval of 25 DEG C ~ 26 DEG C, little on the real experiences impact of user, the heating operation time of multi-online air-conditioning system can be reduced simultaneously, reach the object 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 still runs with accurate standby mode, the pressure of the refrigerant outlet of compressor 11 is made to maintain in certain scope, improve multi-online air-conditioning system and again start speed when heating, the time of the anti-cold wind of the system that shortens.
In addition, when multi-online air-conditioning system enters accurate standby mode at every turn, namely start timing, and judge whether the time that multi-online air-conditioning system runs with accurate standby mode reaches Preset Time.Carried out testing the test data drawn under comprehensive operating mode from multi-online air-conditioning system; the Preset Time of the present embodiment is preferably 3min; within this time; indoor environment temperature can decline about 1 DEG C under field conditions (factors) usually; and now multi-online air-conditioning system need restart and heats; maintain indoor environment temperature in certain temperature range, the multi-online air-conditioning system being therefore in accurate standby mode can be opened fast and heat, and user is experienced preferably.
But, better in indoor sealing thermal insulation effect, when indoor/outdoor temperature-difference is less, the decrease speed of indoor environment temperature is often slower, therefore to be in time of accurate standby mode state longer for multi-online air-conditioning system, in order to save the service life of electric energy and prolongation compressor 11, when multi-online air-conditioning system reaches Preset Time with the time that accurate standby mode runs, such as, when reaching 3min, control multi-online air-conditioning system by the second standby control module 50 and go to standby mode, the high energy efficiency ratio of multi-online air-conditioning system can be embodied so better, 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 that multi-online air-conditioning system runs according to standby mode, real-time detection indoor environment temperature, and calculate the difference of indoor environment temperature and preset temperature, judge whether this difference is greater than predetermined threshold value, if when being less than or equal to predetermined threshold value, then controlling multi-online air-conditioning system and still run according to current standby mode; If when this difference is greater than predetermined threshold value, then controls multi-online air-conditioning system and enter default heating mode, maintain indoor environment temperature within certain scope.
Particularly, heat control module 40 to send startup 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, now the closed circuit of cold-producing medium is: cold-producing medium is after compressor 11 compresses, flow through cross valve 13 successively, indoor heat exchanger 22, interior organic electronic expansion valve 21, outer organic electronic expansion valve 16, outdoor heat exchanger 14, cross valve 13, compressor 11 is got back to after entering gas-liquid separator 18, complete and once circulate.
Accordingly, a kind of multi-online air-conditioning system provided by the present invention, by being provided with magnetic valve between the pressure duct and low pressure line of cold-producing medium, when indoor environment temperature reaches default temperature, control multi-online air-conditioning system to run with accurate standby mode, opens solenoid valve, cold-producing medium is circulated between compressor and gas-liquid separator, control the volume output of frequency-changeable compressor simultaneously, the pressure that compressor refrigerant is exported remains in certain scope, when indoor environment temperature departs from default temperature range, multi-online air-conditioning system starts when heating again can avoid cold-producing medium from lower pressure increase to operating pressure, shorten the time of the anti-cold wind of indoor set, good Consumer's Experience can be obtained.In addition, the present invention also enters the time of accurate standby mode operation by setting multi-online air-conditioning system, when the time entering the operation of accurate standby mode reaches preset value, control multi-online air-conditioning system and enter standby mode, close compressor, thus reach the object of saving electric energy.
The present invention also provides a kind of quick startup heating method being applicable to multi-online air-conditioning system.
The schematic flow sheet that the present invention starts heating method one embodiment fast see Fig. 4, Fig. 4.
The method that the quick startup that the present embodiment provides heats, comprises step:
Step S10, multi-online air-conditioning system runs with default heating mode.
In this step S10, first power on to multi-online air-conditioning system, what user set multi-online air-conditioning system according to demand heats parameter, as target heats temperature, 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: cold-producing medium is after compressor 11 compresses, flow through cross valve 13 successively, indoor heat exchanger 22, interior organic electronic expansion valve 21, outer organic electronic expansion valve 16, outdoor heat exchanger 14, cross valve 13, compressor 11 is got back to after entering gas-liquid separator 18, complete and once circulate.
Step S11, judges whether indoor environment temperature reaches preset temperature.
In this step S11, temperature sensor in indoor set 2 detects indoor environment temperature in real time and whether reaches preset temperature, the preset temperature that this place refers to be user when opening multi-online air-conditioning system or the target in use arranged heat temperature, certainly, also can be that multi-online air-conditioning system specifically heats and presetly in program heats temperature.
Step S12, when indoor environment temperature reaches preset temperature, runs with accurate standby mode.
In this step S12, when the temperature sensor in indoor set 2 detects that indoor environment temperature reaches preset temperature, such as, preset temperature is 26 DEG C, 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, thus reduces environmental amenity degree residing for user.When indoor environment temperature depart from preset temperature reach certain value time, multi-online air-conditioning system need restart and heat, and changes within the specific limits to maintain indoor environment temperature.Consider that the environment temperature of opening when heating is lower, when multi-online air-conditioning system again start heat time, namely open indoor set blower fan 23, and now the heat exchanging pipe temperature of compressor 11 delivery temperature and indoor set 2 is all lower, then can blowing cold air; If after system startup heats, indoor set blower fan 23 delayed start-up, although can prevent blowing cold air, the time of anti-cold wind is longer.These two kinds of modes all can cause poor Consumer's Experience.In order to shorten the time of the anti-cold wind of indoor set 2, improve the comfortableness of multi-online air-conditioning system, when indoor environment temperature reaches preset temperature, control multi-online air-conditioning system to run with accurate standby mode, the pressure of compressor 11 refrigerant outlet is made to remain in certain scope, again starting when heating to avoid cold-producing medium from lower pressure increase to operating pressure, shortens the time of the anti-cold wind of indoor set 2, can obtain good Consumer's Experience.
That the present invention starts in heating method the schematic flow sheet entering accurate holding state fast see Fig. 5, Fig. 5.
In the present embodiment, step S12 specifically comprises:
Step S121, sends and enters accurate standby mode instruction;
In this step S121, when detecting that indoor environment temperature reaches preset temperature, controller (not shown) sends and enters accurate standby mode instruction, controls multi-online air-conditioning system and goes to accurate standby mode by presetting heating mode.
Step S122, control compressor 11 and run with accurate standby frequency, open magnetic valve 17, 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, multi-online air-conditioning system is also in higher state by presetting the running frequency of compressor 11 when heating mode goes to accurate standby mode, the force value of the refrigerant outlet of compressor 11 maintains higher level, therefore compressor 11 runs with lower accurate standby frequency, such as, in the present embodiment, compressor 11 runs with the frequency of 20Hz, thus make the force value of the refrigerant outlet of compressor 11 be down to suitable scope, namely meet multi-online air-conditioning system and start the requirement heated fast, the object of saving electric energy can be reached again.After accurate standby frequency is down in the operation of compressor 11, open magnetic valve 17, connect the pressure duct in compressor 11 exit and the low pressure line of gas-liquid separator 18 import department, cross valve 13 keeps power-up state, then outer organic electronic expansion valve 16, interior organic electronic expansion valve 21, off-premises station blower fan 15 and indoor set blower fan 23 is closed, now the closed circuit of cold-producing medium is: cold-producing medium is discharged by the blast pipe of compressor 11, gas-liquid separator 18 is entered after flowing through magnetic valve 17, muffler through compressor 11 gets back to compressor 11, completes and once circulates.When multi-online air-conditioning system is in accurate standby mode, compressor 11 runs with lower frequency, and cold-producing medium gets back to compressor 11 by means of only after magnetic valve 17 and gas-liquid separator 18, heat exchange is not carried out by heat exchanger and the external world, therefore heat exchange amount is very little, while the pressure of refrigerant outlet maintaining compressor 11 is in certain scope, save electric energy, can ensure that multi-online air-conditioning system starts when heating again, the time of the anti-cold wind of shortening system, improve Consumer's Experience.
The schematic flow sheet that the present invention starts that in heating method, compressor runs with accurate standby frequency fast see Fig. 6, Fig. 6.
In the present embodiment, step S122 specifically comprises:
Step S1221, detects the pressure of the refrigerant outlet of compressor 11 in refrigerant circulation loop;
In this step S1221, when multi-online air-conditioning system runs with accurate standby mode, the pressure sensor 12 be arranged in the pressure duct at the refrigerant outlet place of compressor 11 detects the pressure of cold-producing medium in real time.
Step S1222, according to the lifting of Stress control compressor 11 running frequency of the refrigerant outlet detected, makes the pressure of the refrigerant outlet of compressor maintain in default pressure limit.
In this step S1222, the pressure of the refrigerant outlet of compressor 11 and the running frequency of compressor 11 form closed-loop control relation, when detecting that the pressure of cold-producing medium is 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, thus saves electric energy; When detecting that the pressure of cold-producing medium is less than the lower limit of preset pressure scope, raise the running frequency of compressor 11, make the pressure increase of cold-producing medium in the pressure limit preset, thus multi-online air-conditioning system again start heat time, the delivery temperature of compressor 11 can be raised fast, shorten the time of the anti-cold wind of indoor set 2.
Particularly, when the pressure of refrigerant outlet compressor 11 being detected is greater than 3.0MPa, then the running frequency controlling compressor 11 is down to 20Hz ~ 30Hz; When the pressure of refrigerant outlet compressor 11 being detected is less than 2.6MPa, then the running frequency controlling compressor 11 rises to 50Hz ~ 60Hz.It is emphasized that, the pressure limit preset mentioned in the present embodiment and the running frequency corresponding to default pressure limit are only concrete embodiments, to one skilled in the art, based on inventive concept, with reference to the explanation of the present embodiment, the multi-online air-conditioning system of different system parameter can be run away with the pressure limit preset during accurate standby mode operation and the running frequency corresponding to default pressure limit, such as, the pressure limit preset can be 2.0MPa ~ 2.8MPa, when the Pressure Drop of cold-producing medium is to 2.0MPa, compressor 11 runs with the frequency of 45Hz ~ 50Hz, when the pressure of cold-producing medium rises to 2.8MPa, compressor 11 runs with the frequency of 30Hz ~ 35Hz, and therefore not to repeat here.
Step S13, judges 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, real-time detection indoor environment temperature, and calculate the difference of indoor environment temperature and preset temperature, in order to save the number of times of electric energy and minimizing compressor 11 frequent starting, after indoor environment temperature reaches preset temperature, indoor environment temperature is usually allowed to change within the specific limits.In the present embodiment, preferred predetermined threshold value is 1 DEG C, and such as preset temperature is 26 DEG C, indoor environment temperature is then allowed to float in the interval of 25 DEG C ~ 26 DEG C, little on the real experiences impact of user, the heating operation time of multi-online air-conditioning system can be reduced simultaneously, reach the object 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 still runs with accurate standby mode, the pressure of the refrigerant outlet of compressor is made to maintain in certain scope, improve multi-online air-conditioning system and again start speed when heating, the time of the anti-cold wind of the system that shortens.
Step S14, judges whether the time run with accurate standby mode reaches Preset Time.
In this step S14, when multi-online air-conditioning system enters accurate standby mode at every turn, namely start timing, and judge whether the time that multi-online air-conditioning system runs with accurate standby mode reaches Preset Time.Carried out testing the test data drawn under comprehensive operating mode from multi-online air-conditioning system; the Preset Time of the present embodiment is preferably 3min; within this time; indoor environment temperature can decline about 1 DEG C under field conditions (factors) usually; and now multi-online air-conditioning system need restart and heats; maintain indoor environment temperature in certain temperature range, the multi-online air-conditioning system being therefore in accurate standby mode can start fast and heats, and user is experienced preferably.
Step S15, when the time run with accurate standby mode reaches Preset Time, enters standby mode.
In this step S15,, indoor/outdoor temperature-difference better in indoor sealing thermal insulation effect is less, the decrease speed of indoor environment temperature is often slower, therefore to be in time of accurate standby mode state longer for multi-online air-conditioning system, in order to save the service life of electric energy and prolongation compressor, when multi-online air-conditioning system reaches Preset Time with the time that accurate standby mode runs, such as, when reaching 3min, control multi-online air-conditioning system and go to standby mode, the high energy efficiency ratio of multi-online air-conditioning system can be embodied so better, meet the demand of environmental protection and energy saving.
That the present invention starts in heating method the schematic flow sheet entering holding state fast see Fig. 7, Fig. 7.
In the present embodiment, step S15 specifically comprises:
Step S151, sends and enters standby mode instruction;
In this step S151, when the time run with accurate standby mode reaches Preset Time, controller sends and enters standby mode instruction, controls multi-online air-conditioning system and goes 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 that multi-online air-conditioning system runs according to standby mode, real-time detection indoor environment temperature, and calculate the difference of indoor environment temperature and preset temperature, judge whether this difference is greater than predetermined threshold value, if when being less than or equal to predetermined threshold value, then multi-online air-conditioning system still runs according to current standby mode; If when this difference is greater than predetermined threshold value, then controls multi-online air-conditioning system and enter default heating mode, maintain indoor environment temperature within certain scope.
Accordingly, a kind of quick startup heating method being applicable to multi-online air-conditioning system provided by the present invention, by being provided with magnetic valve between the pressure duct and low pressure line of cold-producing medium, when indoor environment temperature reaches default temperature, control multi-online air-conditioning system to run with accurate standby mode, opens solenoid valve, cold-producing medium is circulated between compressor and gas-liquid separator, control the volume output of frequency-changeable compressor simultaneously, the pressure that compressor refrigerant is exported remains in certain scope, when indoor environment temperature departs from default temperature range, multi-online air-conditioning system starts when heating again can avoid cold-producing medium from lower pressure increase to operating pressure, shorten the time of the anti-cold wind of indoor set, good Consumer's Experience can be obtained.In addition, the present invention also enters the time of accurate standby mode operation by setting multi-online air-conditioning system, when the time entering the operation of accurate standby mode reaches preset value, control multi-online air-conditioning system and enter standby mode, close compressor, thus reach the object 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 utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (12)
1. a 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 it is characterized in that, described controller comprises:
First standby control module, at multi-online air-conditioning system according in default heating mode running, when indoor environment temperature reaches preset temperature, control multi-online air-conditioning system run with accurate standby mode;
Heat control module, at multi-online air-conditioning system according in accurate standby mode running, when the difference of described indoor environment temperature and described preset temperature is greater than predetermined threshold value, controls multi-online air-conditioning system and enter described default heating mode and run;
Second standby control module, at multi-online air-conditioning system according in accurate standby mode running, when the time run with described accurate standby mode reaches Preset Time, control multi-online air-conditioning system and enter standby mode and run.
2. multi-online air-conditioning system according to claim 1, it is characterized in that, described heat control module also at multi-online air-conditioning system according in described standby mode running, when the difference of described indoor environment temperature and described preset temperature is greater than described predetermined threshold value, controls multi-online air-conditioning system and enter described default heating mode and run.
3. multi-online air-conditioning system according to claim 1, is characterized in that, the step that described first standby control module control multi-online air-conditioning system runs with accurate standby mode comprises:
Control compressor to run with accurate standby frequency, 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 controlled in the refrigerant circulation loop of multi-online air-conditioning system, enter gas-liquid separator after flowing through magnetic valve, get back to compressor through compressor muffler.
4. multi-online air-conditioning system according to claim 3, is characterized in that, described first standby control module comprises:
Pressure sensing cell, for detecting the pressure of the refrigerant outlet of compressor in described refrigerant circulation loop;
Frequency control unit, for the lifting of the Stress control compressor operating frequency according to the refrigerant outlet detected, makes the pressure of the refrigerant outlet of described compressor maintain in default pressure limit.
5. multi-online air-conditioning system according to claim 4, is characterized in that, described frequency control unit specifically for:
When the pressure of refrigerant outlet compressor being detected is greater than 3.0MPa, then the running frequency controlling compressor is down to 20Hz ~ 30Hz;
When the pressure of refrigerant outlet compressor being detected is less than 2.6MPa, then the running frequency controlling compressor rises to 50Hz ~ 60Hz.
6. multi-online air-conditioning system according to claim 1, is characterized in that, the step that described second standby control module control multi-online air-conditioning system enters 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. start a heating method fast, the method is applicable to the multi-online air-conditioning system comprising accurate standby mode, standby mode and default heating mode, and it is characterized in that, the method comprises the following steps:
At multi-online air-conditioning system according in described default heating mode running, when indoor environment temperature reaches preset temperature, control multi-online air-conditioning system and run with described accurate standby mode;
At multi-online air-conditioning system according in described accurate standby mode running, when the difference of described indoor environment temperature and described preset temperature is greater than predetermined threshold value, controls multi-online air-conditioning system and enter described default heating mode and run;
At multi-online air-conditioning system according in described accurate standby mode running, when the time run with described accurate standby mode reaches Preset Time, control multi-online air-conditioning system and enter the operation of described standby mode.
8. quick startup heating method according to claim 7, it is characterized in that, described at multi-online air-conditioning system according in described accurate standby mode running, when the time run with described accurate standby mode reaches Preset Time, control also to comprise after multi-online air-conditioning system enters the step of described standby mode operation:
At multi-online air-conditioning system according in described standby mode running, when the difference of described indoor environment temperature and described preset temperature is greater than described predetermined threshold value, controls multi-online air-conditioning system and enter described default heating mode and run.
9. quick startup heating method according to claim 7, is characterized in that, the step that described control multi-online air-conditioning system runs with described accurate standby mode comprises:
Control compressor to run with accurate standby frequency, 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 controlled in the refrigerant circulation loop of multi-online air-conditioning system, enter gas-liquid separator after flowing through magnetic valve, get back to compressor through compressor muffler.
10. quick startup heating method according to claim 9, is characterized in that, the step that described control compressor runs with accurate standby frequency comprises:
Detect the pressure of the refrigerant outlet of compressor in described refrigerant circulation loop;
According to the lifting of the Stress control compressor operating frequency of the refrigerant outlet detected, the pressure of the refrigerant outlet of described compressor is maintained in default pressure limit.
11. quick startup heating methods according to claim 10, it is characterized in that, the lifting of the Stress control compressor operating frequency of the described refrigerant outlet according to detecting, the step that the pressure of the refrigerant outlet of described compressor is maintained in default pressure limit comprises:
When the pressure of refrigerant outlet compressor being detected is greater than 3.0MPa, then the running frequency controlling compressor is down to 20Hz ~ 30Hz;
When the pressure of refrigerant outlet compressor being detected is less than 2.6MPa, then the running frequency controlling compressor rises to 50Hz ~ 60Hz.
12. quick startup heating methods according to claim 7, is characterized in that, the step that described control multi-online air-conditioning system 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.
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