CN103398515B - Air-conditioning system and its control method - Google Patents
Air-conditioning system and its control method Download PDFInfo
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- CN103398515B CN103398515B CN201310273427.4A CN201310273427A CN103398515B CN 103398515 B CN103398515 B CN 103398515B CN 201310273427 A CN201310273427 A CN 201310273427A CN 103398515 B CN103398515 B CN 103398515B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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Abstract
The invention discloses a kind of air-conditioning system, the outlet of compressor connects the import of condenser respectively through the first escape pipe and the second escape pipe, regenerator is on the blast pipe and the first escape pipe of evaporimeter, first escape pipe is provided with the first magnetic valve being electrically connected with the controller, second escape pipe is provided with the second magnetic valve being electrically connected with the controller, the outlet of evaporimeter be provided be electrically connected with the controller, for detecting the first temperature sensor of evaporator outlet temperature；Controller is opened and the second closed electromagnetic valve according to evaporator outlet temperature, the first magnetic valve of control, or the first closed electromagnetic valve of control and the second magnetic valve are opened.The air-conditioning system and its control method of the present invention, it is therefore prevented that low temperature damp steam is entered in compressor, it is to avoid compressor due to liquid hammer cause to damage and accident generation situation；The vapor (steam) temperature entered in compressor and pressure are prevented more than size during normal work, so as to ensure that the security of compressor.
Description
Technical field
The present invention relates to air-conditioning technical field, is related specifically to a kind of air-conditioning system and its control method.
Background technology
With the offer of people's living standard, the use of air-conditioning is more and more universal, and most is split-type air conditioner, but
It is that split-type air conditioner still be present.Current air-conditioning in use, due to environment temperature ever-changing, a lot
When environment temperature beyond common air-conditioning range of operation, especially for temperature relatively low in the case of using air conditioner refrigerating
（Cryogenic refrigeration）When, in running, when being exchanged heat due to refrigerant and off-premises station, the refrigerant temperature for flowing into evaporimeter may be low
In 5 degree, through evaporator evaporation after refrigerant temperature be likely lower than 3 degree, cause evaporation not exclusively, discharge low temperature damp steam to compressing
In machine, liquid compression will be formed after low temperature damp steam in compressor suction, liquid hammer is produced, compressor is damaged, when serious, may
Generation accident.
Content of the invention
The main object of the present invention is that offer is a kind of can avoid compressor generation liquid hammer from causing to compressor damage
Air-conditioning system and its control method.
The present invention proposes a kind of air-conditioning system, and including evaporimeter, condenser and compressor, the outlet of the evaporimeter passes through
Blast pipe is connected with the import of the compressor, and the outlet of the compressor connects the import of the condenser, also includes controlling
Device and regenerator, the outlet of the compressor connect the import of the condenser respectively through the first escape pipe and the second escape pipe,
On the blast pipe and the first escape pipe, first escape pipe is provided with and is electrically connected with the controller regenerator
The first magnetic valve for connecing, second escape pipe are provided with the second magnetic valve electrically connected with the controller, the evaporimeter
Outlet be provided with electrically connect with the controller, for detecting the first temperature sensor of the evaporator outlet temperature；Described
Controller controls first magnetic valve and opens and second closed electromagnetic valve according to the evaporator outlet temperature, or control
Make first closed electromagnetic valve and second magnetic valve is opened.
Preferably, also include the indoor fan electrically connected with the controller, the evaporimeter inner disc be provided with described
Controller electrical connection, for detecting the second temperature sensor of the evaporimeter inner disc temperature, the controller is according to the steaming
Send out the rotating speed of the unlatching/closing of compressor and outdoor fan and the indoor fan described in device inner disc temperature control.
Preferably, also include the outdoor fan electrically connected with the controller, the outlet of the condenser be provided with described
Controller electrical connection, for detecting the three-temperature sensor of the condensator outlet temperature and outdoor environment temperature, the control
Device processed controls the rotating speed of the outdoor fan according to the condensator outlet temperature and outdoor environment temperature.
Preferably, also include that the electric expansion valve electrically connected with the controller, the electric expansion valve connect setting are existed
Between the outlet of the condenser and the import of the evaporimeter.
Preferably, the regenerator is fin-tube heat exchanger.
The present invention proposes a kind of control method of air-conditioning system, including step：
The air-conditioning system operation refrigeration, detects evaporator outlet temperature；
Judge the evaporator outlet temperature whether less than the first preset temperature value；
When the evaporator outlet temperature is less than first preset temperature value, control first magnetic valve open and
Second closed electromagnetic valve；
When the evaporator outlet temperature is more than or equal to first preset temperature value, first magnetic valve is controlled
Close and second magnetic valve is opened.
Preferably, also include step：
Detection evaporimeter inner disc temperature；
When the evaporimeter inner disc temperature within the default time continuously less than or be equal to the second preset temperature value when, control
Compressor and outdoor fan are closed and control indoor fan is transformed into the operation of the first rotating speed from current rotating speed.
Preferably, described when the evaporimeter inner disc temperature within the default time continuously less than or be equal to the second default temperature
During angle value, control compressor and outdoor fan is closed and control indoor fan is transformed into the step that the first rotating speed runs from current rotating speed
After rapid, also include step：
When the evaporimeter inner disc temperature is more than or equal to three preset temperature values, the compressor and outdoor wind is controlled
Machine starts and controls the indoor fan and is transformed into the current rotating speed operation from the first rotating speed.
The present invention also proposes a kind of control method of air-conditioning system, including step：
The air-conditioning system operation refrigeration, detects condensator outlet temperature；
The condensator outlet temperature and the 4th preset temperature value are compared；
When the condensator outlet temperature is more than four preset temperature value, the outdoor fan is controlled with second turn
Speed operation；
When the condensator outlet temperature is less than or equal to four preset temperature value, by the condensator outlet temperature
Degree is compared with the 5th preset temperature value；
When the condensator outlet temperature is more than five preset temperature value, the outdoor fan is controlled with the 3rd turn
Speed operation；
When the condensator outlet temperature is less than or equal to five preset temperature value, by the condensator outlet temperature
Degree is compared with the 6th preset temperature value；
When the condensator outlet temperature is more than six preset temperature value, the outdoor fan is controlled with the 4th turn
Speed operation；
When the condensator outlet temperature is less than or equal to six preset temperature value, controls the outdoor fan and close
Close.
Preferably, specifically include the step of the detection condensator outlet temperature：
Air-conditioning system operation refrigeration, detects outdoor environment temperature；
When outdoor environment temperature is more than seven preset temperature values, control outdoor fan is run with the second rotating speed；
When outdoor environment temperature is less than or equal to seven preset temperature values, then detect the outlet temperature of condenser.
Preferably, also include step：
Detection evaporimeter inner disc temperature；
When the evaporimeter inner disc temperature within the default time continuously less than or be equal to the second preset temperature value when, control
Compressor and outdoor fan are closed and control indoor fan is transformed into the operation of the first rotating speed from current rotating speed.
Preferably, described when the evaporimeter inner disc temperature within the default time continuously less than or be equal to the second default temperature
During angle value, control compressor and outdoor fan is closed and indoor fan is transformed into the step of the first rotating speed runs it from current rotating speed
Afterwards, also include step：
When the evaporimeter inner disc temperature is more than or equal to three preset temperature values, the compressor and outdoor wind is controlled
Machine starts and controls the indoor fan and is transformed into the current rotating speed operation from the first rotating speed.
Preferably, also include step：
Detection evaporator outlet temperature；
Judge the evaporator outlet temperature whether less than the first preset temperature value；
When the evaporator outlet temperature is less than first preset temperature value, control first magnetic valve open and
Second closed electromagnetic valve；
When the evaporator outlet temperature is more than or equal to first preset temperature value, first magnetic valve is controlled
Close and second magnetic valve is opened.
The air-conditioning system and its control method of the present invention, automatically controls according to evaporator outlet temperature and selects going out for compressor
Air pipe, when evaporator outlet temperature is less than the preset temperature value at this, the first magnetic valve of control is opened and the second magnetic valve
Close, so that the outlet of compressor conveys the gaseous coolant of HTHP to condenser by the first escape pipe, the first outlet
Pipe carries out heating evaporation to the low temperature damp steam in evaporator discharge pipe in regenerator, it is therefore prevented that low temperature damp steam enters compression
In machine, it is to avoid compressor due to liquid hammer cause to damage and accident generation situation；Being not less than in evaporator outlet temperature should
During place's preset temperature value, the second magnetic valve of control is opened and the first closed electromagnetic valve, so that the outlet of compressor directly passes through
The gaseous coolant of the second escape pipe conveying HTHP is not heated to the steam in blast pipe by regenerator, is prevented to condenser
The vapor (steam) temperature and pressure that enter in compressor are stopped more than size during normal work, so as to ensure that the safety of compressor
Property；Ensure that the safety and stability of air-conditioning system.
Description of the drawings
Fig. 1 is the structural representation of air-conditioning system preferred embodiment of the present invention；
Fig. 2 is the connection block diagram of air-conditioning system preferred embodiment of the present invention；
Fig. 3 is the flow chart of the control method first embodiment of air-conditioning system of the present invention；
Fig. 4 is the flow chart of the control method second embodiment of air-conditioning system of the present invention；
Fig. 5 is the flow chart of the control method 3rd embodiment of air-conditioning system of the present invention；
Fig. 6 is the flow chart of the control method fourth embodiment of air-conditioning system of the present invention；
Fig. 7 is the flow chart of the 5th embodiment of control method of air-conditioning system of the present invention；
Fig. 8 is the flow chart of the control method sixth embodiment of air-conditioning system of the present invention.
The realization of the object of the invention, functional characteristics and advantage will be described further in conjunction with the embodiments referring to the drawings.
Specific embodiment
It should be appreciated that specific embodiment described herein is not intended to limit the present invention only in order to explain the present invention.
As depicted in figs. 1 and 2, Fig. 1 is the structural representation of air-conditioning system preferred embodiment of the present invention, and Fig. 2 is of the invention
The connection block diagram of air-conditioning system preferred embodiment.
The air-conditioning system that the embodiment is mentioned, including evaporimeter 10, condenser 20 and compressor 30, the outlet of evaporimeter 10
It is connected with the import of compressor 30 by blast pipe 11, the import of the outlet connection condenser 20 of compressor 30 also includes controlling
Device 40 and regenerator 50, the outlet of compressor 30 connect entering for condenser 20 through the first escape pipe 31 and the second escape pipe 32 respectively
Mouthful, on blast pipe 11 and the first escape pipe 31, the first escape pipe 31 is provided with and is electrically connected with controller 40 regenerator 50
The first magnetic valve 60, the second escape pipe 32 is provided with the second magnetic valve 70 electrically connected with controller 40, and evaporimeter 10 goes out
Mouth be provided with electrically connect with controller 40, for detecting the first temperature sensor 12 of 10 outlet temperature of evaporimeter；Controller 40
According to 10 outlet temperature of evaporimeter, the first magnetic valve 60 of control is opened and the second magnetic valve 70 cuts out, or the first magnetic valve 60 of control
Close and the second magnetic valve 70 is opened.
The air-conditioning system of the present embodiment realizes that principle is as follows：
When controller 40 receive 10 outlet temperature of evaporimeter that the first temperature sensor 12 detects less than this at preset
Temperature value（When the outlet temperature of evaporimeter 10 is less than the default temperature value, low temperature damp steam is discharged in the outlet of evaporimeter 10）
When, the first magnetic valve 60 of control of controller 40 is opened and the second magnetic valve 70 cuts out, and now, compressor 30 is through the first escape pipe 31
High pressure gaseous refrigerant after compressor 30 is compressed is transported to condenser 20, and the first escape pipe 31 is in regenerator 50 by which
The partial heat of the high pressure gaseous refrigerant in pipe is delivered on the blast pipe 11 of evaporimeter 10, to the low temperature in blast pipe 11
Damp steam carries out heat temperature raising, so that damp steam further evaporates, removes damp steam, so avoids compressor 30 and suck
Damp steam and cause liquid hit phenomenon to damage compressor 30 and accident；Detect when controller 40 receives the first temperature sensor 12
More than or equal at this during default temperature value, controller 40 controls the first magnetic valve 60 and cuts out and the 10 outlet temperature of evaporimeter
Two magnetic valves 70 are opened, now, compressor 30 compressor 30 is compressed through the second escape pipe 32 after high pressure gaseous refrigerant
It is transported to condenser 20, the higher steam of the temperature of the drying that evaporimeter 10 is discharged, without HTHP in the first escape pipe 31
Gaseous coolant flows through, and will not carry out heat temperature raising to the blast pipe 11 of evaporimeter 10, not result in from 10 blast pipe 11 of evaporimeter
The vapor (steam) temperature and pressure that are transported in compressor 30 are too high and work range of operation that exceed compressor 30 damages compressor 30
And accident.
Air-conditioning system proposed by the present invention, automatically controls the escape pipe for selecting compressor 30 according to 10 outlet temperature of evaporimeter
Road, when 10 outlet temperature of evaporimeter is less than the preset temperature value at this, the first magnetic valve 60 of control is opened and the second magnetic valve
70 close, so that the outlet of compressor 30 conveys the gaseous coolant of HTHP to condenser 20 by the first escape pipe 31,
First escape pipe 31 carries out heating evaporation to the low temperature damp steam in 10 blast pipe 11 of evaporimeter in regenerator 50, it is therefore prevented that low
Warm and humid steam entered in compressor 30, it is to avoid compressor 30 due to liquid hammer cause to damage and accident generation situation；Steaming
10 outlet temperature of device is sent out not less than, during preset temperature value, the second magnetic valve 70 of control is opened and the first magnetic valve 60 cuts out at this,
So that the outlet of compressor 30 directly conveys the gaseous coolant of HTHP to condenser 20 by the second escape pipe 32, obstructed
Cross regenerator 50 to heat the steam in blast pipe 11, it is therefore prevented that the vapor (steam) temperature entered in compressor 30 and pressure exceed normal
Size during work, so that ensure that the security of compressor 30；Ensure that the safety and stability of air-conditioning system.
Further, the air-conditioning system of the present embodiment also includes the indoor fan 80 electrically connected with controller 40, evaporimeter
10 inner discs be provided with electrically connect with controller 40, for detecting the second temperature sensor 13 of 10 inner disc temperature of evaporimeter, control
Device 40 is according to the unlatching/cut out of 10 inner disc temperature control compressor 30 of evaporimeter and outdoor fan 90 and turning for indoor fan 80
Speed.
When controller 40 receives 10 inner disc temperature of evaporimeter that second temperature sensor 13 detects in the default time
Interior continuously less than at this during default temperature value（If the temperature of 10 inner disc of evaporimeter default temperature value at less than this continues
When time exceedes the default time, frosting or icing can be produced）, compressor 30 cuts out the control of controller 40, outdoor fan 90 is closed
Close, so as to stop the refrigeration of air-conditioning system；And control the rotating speed of indoor fan 80 and be switched to default rotational speed（This is default
Rotating speed before rotating ratio conversion is big, can be the rotating speed of 80 maximum of indoor fan）, accelerate cold air in evaporimeter 10 with
The heat transfer rate of room air, raises the temperature of 10 inner disc of evaporimeter, prevents frosting or icing.Can so avoid due to evaporation
10 inner disc frosting of device or icing and affect refrigeration and the damage air-conditioning system for causing, it is ensured that the stable system of air-conditioning system
Cold effect and the safety of air-conditioning system.
Further, in the present embodiment, air-conditioning system also includes the outdoor fan 90 electrically connected with controller 40, condenser
20 outlet be provided with electrically connect with controller 40, for detecting the 3rd temperature of 20 outlet temperature of condenser and outdoor environment temperature
Sensor 21, controller 40 control the rotating speed of outdoor fan 90 according to 20 outlet temperature of condenser and outdoor environment temperature.For example：
Controller 40 is compared with default environment temperature threshold value according to the outdoor environment temperature that three-temperature sensor 21 is detected, and works as room
When external environment temperature is more than default environment temperature threshold value, control outdoor fan 90 is run with corresponding preset rotation speed（This is preset
Rotating speed can be the rotating speed of 90 maximum of outdoor fan）；When outdoor environment temperature is less than or equal to default environment temperature threshold value, control
Device processed 40 is further according to 20 outlet temperature of condenser that sensor is detected 20 outlet temperature area of default condenser different from three
（First humidity province, second temperature area and the 3rd humidity province）It is compared, when 20 outlet temperature of condenser is located at the first humidity province
When, controller 40 is controlled outdoor fan 90 and is run with the first rotating speed；When 20 outlet temperature of condenser is located at second temperature area, control
Device processed 40 is controlled outdoor fan 90 and is run with the second rotating speed；When 20 outlet temperature of condenser is located at three humidity provinces, controller
40 control outdoor fans 90 are run with the 3rd rotating speed；20 outlet temperature of condenser is higher positioned at higher humidity province, outdoor fan
90 rotating speed is in higher rotating speed（Temperature in such as the first humidity province is higher than the temperature in second temperature area, then first turn
Speed is more than the second rotating speed）.Certainly, the present embodiment is explained as a example by being in the above described manner, not in order to limiting in fact
Existing mode.
Difference of the air-conditioning system of the present embodiment according to 20 outlet temperature of condenser（That is the load of condenser 20 is different）, control
Outdoor fan processed 90 is adjusted to corresponding rotating speed operation, i.e., when 20 load of condenser is low, control the rotating speed phase of outdoor fan 90
Should reduce, when 20 load of condenser is high, the rotating speed for controlling outdoor fan 90 accordingly increases, dynamic regulation outdoor fan 90
Rotating speed, the i.e. power of dynamic regulation outdoor fan 90, have saved the energy.
Further, the present embodiment air-conditioning system also includes the electric expansion valve 100 electrically connected with controller 40, and electronics is swollen
100 connect setting of swollen valve is between the outlet of condenser 20 and the import of evaporimeter 10.Electric expansion valve 100 can pass through control
In device processed 40, default program carries out throttling control, can adjust, and flexibility is strong.Regenerator 50 be fin-tube heat exchanger, fin
When pipe heat exchanger is installed, finned tube can be socketed on blast pipe 11 and the first escape pipe 31, the effect of such heat transfer is more
Good.
With reference to Fig. 3, the present invention proposes a kind of control method of air-conditioning system, including：
Step S101, air-conditioning system operation refrigeration, detects evaporator outlet temperature；
Evaporator outlet temperature, the i.e. temperature of the steam of detection evaporator outlet are detected by the first temperature sensor, will
The temperature is sent to controller.
Whether step S102, judge evaporator outlet temperature less than the first preset temperature value；
Controller is by evaporator outlet temperature and the first preset temperature value（Such as 5 DEG C）Carry out size comparison.
Step S103, when evaporator outlet temperature is less than the first preset temperature value, the first magnetic valve of control is opened and the
Two closed electromagnetic valves；
When evaporator outlet temperature is less than the first preset temperature value（The outlet temperature of evaporimeter is less than the first preset temperature
During value, evaporator outlet discharges low temperature damp steam）, controller control the first magnetic valve open and the second closed electromagnetic valve, that is, press
The outlet of contracting machine can not pass through the second escape pipe and condensation by the first escape pipe and the inlet communication of condenser, compressor outlet
The inlet communication of device.The partial heat of the high pressure gaseous refrigerant in its pipe is delivered to steaming in regenerator by the first escape pipe
Send out on the blast pipe of device, heat temperature raising is carried out to the low temperature damp steam in blast pipe, so that damp steam further evaporates, remove
Damp steam, so avoids compressor suction damp steam and causes liquid hit phenomenon to damage compressor and accident.
Step S104, when evaporator outlet temperature is more than or equal to the first preset temperature value, the first magnetic valve of control is closed
Close and the second magnetic valve is opened.
When evaporator outlet temperature is more than or equal to the first default temperature value（Evaporimeter discharge drying temperature compared with
High steam）, controller controls the first closed electromagnetic valve and the second magnetic valve is opened, and now, the outlet of compressor passes through second
Escape pipe and the inlet communication of condenser, the outlet of compressor can not pass through the inlet communication of the first escape pipe and condenser, the
Flow through without high pressure gaseous refrigerant in one escape pipe, heat temperature raising will not be carried out to the blast pipe of evaporimeter, not resulted in
The vapor (steam) temperature and pressure that are transported in compressor from evaporator discharge pipe are too high and work range of operation that exceed compressor is damaged
Bad compressor and accident.
The control method of the air-conditioning system of the present embodiment, selects compressor according to evaporator outlet end temperature automatic control
Outlet pipe, the damage of the compressor caused so as to avoid the liquid hit phenomenon and abnormal work of compressor and accident occur,
Provide the safety and stability of air-conditioning system.
Further, with reference to Fig. 4, the control method of the air-conditioning system of the present embodiment also includes：
Step S201, detects evaporimeter inner disc temperature；
Second temperature sensor detects evaporimeter inner disc temperature, and the temperature is sent to controller.
Step S202, when evaporimeter inner disc temperature within the default time continuously less than or be equal to the second preset temperature value
When, control compressor and outdoor fan closing and control indoor fan are transformed into the operation of the first rotating speed from current rotating speed.
Evaporimeter inner disc constant temperature is less than or equal to the second preset temperature value（Such as 0 DEG C）Time exceed Preset Time
（Such as 3 minutes）When, evaporimeter inner disc will frosting, even freeze, certainly, when evaporimeter inner disc temperature condition is not satisfied
When, the work operation of whole air-conditioning system continues as usual, does not do other responses.So, when evaporimeter inner disc temperature is default
In time continuously less than or when being equal to the second default temperature value, controller control compressor cuts out, outdoor fan is closed, from
And stop the refrigeration of air-conditioning system；And control indoor fan be transformed into the first rotating speed operation（First rotating speed is more than current rotating speed）,
To accelerate the heat transfer rate with room air of cold air in evaporimeter, the temperature of evaporimeter inner disc is raised, frosting or icing is prevented.
Further, after step S202, also include：
Step S203, when evaporimeter inner disc temperature is more than or equal to the 3rd preset temperature value（Such as 5 DEG C）When, control compression
Machine and outdoor fan start and control indoor fan is transformed into current rotating speed operation from the first rotating speed.
When evaporimeter inner disc temperature is more than or equal to three preset temperature values（3rd preset temperature value is preset more than second
Temperature value, evaporimeter inner disc will not frosting or icing at this temperature）, controller controls compressor and outdoor fan restarts
Work and freezed, and control indoor fan rotating speed and the rotating speed before conversion is returned to from the first rotating speed, normally change with room air
Refrigeration heat.
The control method of the air-conditioning system of the present embodiment, it is ensured that the refrigeration of air-conditioning system, while ensure that air-conditioning
The stability and security of system.
With reference to Fig. 5, the present invention also proposes a kind of control method of air-conditioning system, including：
Step S301, air-conditioning system operation refrigeration, detects condensator outlet temperature；
Air-conditioning system work operation refrigeration, three-temperature sensor detect condensator outlet temperature, three-temperature sensor
The temperature of condensator outlet is detected by the way of real-time or timing, and the condensator outlet temperature for detecting is sent to control
Device processed.
Step S302, the condensator outlet temperature and the 4th preset temperature value are compared；
Condensator outlet temperature is carried out size with the 4th default temperature value and is compared by controller；
Step S303, when condensator outlet temperature is more than four preset temperature values, control outdoor fan is with the second rotating speed
Operation；
If the condensator outlet temperature is more than the 4th preset temperature value, controller control outdoor fan is transformed into second turn
Speed operation.
Step S304, when condensator outlet temperature is less than or equal to four preset temperature values, by condensator outlet temperature
It is compared with the 5th preset temperature value；
If the condensator outlet temperature is not more than the 4th preset temperature value, controller will be default to the condenser and the 5th warm
Angle value carries out size comparison.
Step S305, when condensator outlet temperature is more than five preset temperature values, control outdoor fan is with the 3rd rotating speed
Operation（3rd rotating speed is less than the second rotating speed）；
If the condensator outlet temperature is more than the 5th preset temperature value, controller control outdoor fan is transformed into the 3rd turn
Speed operation.
Step S306, when condensator outlet temperature is less than or equal to five preset temperature values, by condensator outlet temperature
It is compared with the 6th preset temperature value；
If the condensator outlet temperature is not more than five preset temperature values, controller is by the condensator outlet temperature and the
Six preset temperature values are compared.
Step S307, when condensator outlet temperature is more than six preset temperature values, control outdoor fan is with the 4th rotating speed
Operation（4th rotating speed is less than the 3rd rotating speed）；
If the condensator outlet temperature is more than the 6th preset temperature value, controller control outdoor fan is converted to the 4th turn
Speed operation.
Step S308, when condensator outlet temperature is less than or equal to six preset temperature values, control room exogenous wind office closes.
If the condensator outlet temperature is not more than six preset temperature values, controller control room exogenous wind office closes, and stops
Only run.
Complete discriminatory analysises of the above-mentioned steps S301 to S308 for the control method of the present embodiment air-conditioning system, this
The control method of embodiment air-conditioning system, each condensator outlet temperature that controller is sended over to temperature sensor by
Discriminatory analysis is carried out according to above-mentioned steps, control outdoor fan is operated accordingly.
Further, with reference to Fig. 6, step S301 is specifically included：
Step S3011, air-conditioning system operation refrigeration, detects outdoor environment temperature；
Air-conditioning system opens operation refrigeration, three-temperature sensor detection outdoor environment temperature by the outdoor environment temperature
It is sent to controller.
Step S3012, when outdoor environment temperature is more than seven preset temperature values, control outdoor fan is transported with the second rotating speed
OK；
The outdoor environment temperature is carried out size with the 7th preset temperature value and is compared by controller, and in the outdoor environment temperature
During more than seven preset temperature values, controller control outdoor fan is converted to the operation of the second rotating speed.
Step S3013, when outdoor environment temperature is less than or equal to seven preset temperature values, then detects the outlet of condenser
Temperature.
If the outdoor environment temperature is not more than seven preset temperature values, three-temperature sensor detects going out for condenser
Mouth temperature.
Further, with reference to Fig. 7, the control method of the air-conditioning system of the present embodiment also includes：
Step S401, detects evaporimeter inner disc temperature；
Step S402, when evaporimeter inner disc temperature within the default time continuously less than or be equal to the second preset temperature value
When, control compressor and outdoor fan closing and control indoor fan are transformed into the operation of the first rotating speed from current rotating speed.
Specifically, below by taking specific temperature value as an example, the control method of the air-conditioning system of the present embodiment is carried out more clear
The explanation of Chu.For example, the 4th preset temperature is 32 DEG C, and the 5th preset temperature is 23 DEG C, and the 6th preset temperature is 10 DEG C, and the 7th is pre-
If temperature is 43 DEG C.Then when outdoor environment temperature is more than 43 DEG C, controller control outdoor fan is run with high wind shelves；Work as outdoor
Environment temperature be less than 43 DEG C, and condensator outlet temperature be more than 32 DEG C when, controller control outdoor fan with high wind shelves（Herein
High wind shelves can with outdoor environment temperature be more than 43 DEG C when outdoor fan operation high wind shelves outdoor fan rotating speed identical,
Can be with difference）Operation；When outdoor environment temperature is less than 43 DEG C, condensator outlet temperature more than or equal to 23 DEG C and is less than 32 DEG C
When, controller is controlled outdoor fan and is run with apoplexy shelves；When outdoor environment temperature is less than 43 DEG C, condensator outlet temperature is more than
Or when being equal to 10 DEG C and being less than 23 DEG C, controller control outdoor fan is run with low wind shelves；When outdoor environment temperature is less than 43
DEG C, and condensator outlet temperature be less than 10 DEG C when, controller control outdoor fan out of service.Above-mentioned high wind shelves, apoplexy shelves
And low wind shelves are corresponding three rotating speed gears in air-conditioning system, the corresponding rotating speed of certainly high wind shelves is more than corresponding turn of apoplexy shelves
Fast size, the corresponding rotating speed size of apoplexy shelves are more than the corresponding rotating speed size of low wind shelves.
The control method of the air-conditioning system of the present embodiment, according to the difference of condensator outlet temperature（That is the load of condenser
Different）, control outdoor fan is adjusted to corresponding rotating speed and runs, i.e., when condenser duty is low, the rotating speed of control outdoor fan
Corresponding reduction, when condenser duty is high, the rotating speed for controlling outdoor fan accordingly increases, and dynamically adjusts turning for outdoor fan
Speed, the i.e. power of dynamic regulation outdoor fan, have saved the energy.
Further, after step S402, also include：
Step S403, when evaporimeter inner disc temperature is more than or equal to three preset temperature values, controls compressor and outdoor
Blower fan starts and control indoor fan is transformed into current rotating speed operation from the first rotating speed.
Specifically, the detailed description of the present embodiment can refer to previous embodiment, will not be described here.
Further, with reference to Fig. 8, the control method of the air-conditioning system of the present embodiment also includes：
Step S501, detects evaporator outlet temperature；
Whether step S502, judge evaporator outlet temperature less than the first preset temperature value；
Step S503, when evaporator outlet temperature is less than the first preset temperature value, the first magnetic valve of control is opened and the
Two closed electromagnetic valves；
Step S504, when evaporator outlet temperature is more than or equal to the first preset temperature value, the first magnetic valve of control is closed
Close and the second magnetic valve is opened.
Specifically, the detailed description of the present embodiment can refer to previous embodiment, will not be described here.
The preferred embodiments of the present invention are the foregoing is only, the scope of the claims of the present invention, every utilization is not thereby limited
Equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or it is related to be directly or indirectly used in other
Technical field, be included within the scope of the present invention.
Claims (18)
1. a kind of air-conditioning system, including evaporimeter, condenser and compressor, the outlet of the evaporimeter by blast pipe with described
The import connection of compressor, the outlet of the compressor connect the import of the condenser, it is characterised in that also include controller
And regenerator, the outlet of the compressor is respectively through the import of the first escape pipe and the second escape pipe connection condenser, institute
Regenerator is stated on the blast pipe and the first escape pipe, first escape pipe is provided with and is electrically connected with the controller
The first magnetic valve, second escape pipe is provided with the second magnetic valve electrically connected with the controller, the evaporimeter
Outlet be provided with electrically connect with the controller, be used for detect the evaporimeter outlet temperature the first temperature sensor；Institute
When stating the outlet temperature of evaporimeter less than the first preset temperature value, the controller controls first magnetic valve and opens and described
Second closed electromagnetic valve；When the outlet temperature of the evaporimeter is more than or equal to first preset temperature value, the control
Device controls first closed electromagnetic valve and second magnetic valve is opened.
2. air-conditioning system according to claim 1, it is characterised in that also include the indoor wind electrically connected with the controller
Machine, the inner disc of the evaporimeter be provided with electrically connect with the controller, for detect the inner disc temperature of the evaporimeter the
Two temperature sensors, the unlatching of the controller compressor and outdoor fan according to the evaporimeter inner disc temperature control/
Closing and the rotating speed of the indoor fan.
3. air-conditioning system according to claim 1, it is characterised in that also include the outdoor wind electrically connected with the controller
Machine, the outlet of the condenser be provided with electrically connect with the controller, for detecting outlet temperature and the outdoor of the condenser
The three-temperature sensor of environment temperature, outlet temperature and outdoor environment temperature control of the controller according to the condenser
The rotating speed of the outdoor fan.
4. air-conditioning system according to claim 1, it is characterised in that also include that the electronics electrically connected with the controller is swollen
Swollen valve, the electric expansion valve connect setting is between the outlet and the import of the evaporimeter of the condenser.
5. air-conditioning system according to claim 1, it is characterised in that the regenerator is fin-tube heat exchanger.
6. a kind of control method of the air-conditioning system being applied to any one of claim 1-5, it is characterised in that including step
Suddenly：
The air-conditioning system operation refrigeration, detects evaporator outlet temperature；
Judge the outlet temperature of the evaporimeter whether less than the first preset temperature value；
When the outlet temperature of the evaporimeter is less than first preset temperature value, controls first magnetic valve and open and institute
State the second closed electromagnetic valve；
When the temperature of the evaporator outlet is more than or equal to first preset temperature value, controls first magnetic valve and close
Close and second magnetic valve is opened.
7. the control method of air-conditioning system according to claim 6, it is characterised in that also include step：
The inner disc temperature of detection evaporimeter；
When the evaporimeter inner disc temperature within the default time continuously less than or be equal to the second preset temperature value when, control pressure
Contracting machine and outdoor fan are closed and control indoor fan is transformed into the operation of the first rotating speed from current rotating speed.
8. the control method of air-conditioning system according to claim 7, it is characterised in that when the inner disc temperature of the evaporimeter
Within the default time continuously less than or when being equal to the second preset temperature value, control compressor and outdoor fan are closed and control room
After inner blower is transformed into the step of the first rotating speed runs from current rotating speed, also include step：
When the inner disc temperature of the evaporimeter is more than or equal to three preset temperature values, the compressor and outdoor fan is controlled
Start and control the indoor fan the current rotating speed operation is transformed into from the first rotating speed.
9. a kind of control method of the air-conditioning system being applied to described in Claims 2 or 3, it is characterised in that including step：
The air-conditioning system operation refrigeration, detects the outlet temperature of condenser；
The outlet temperature of the condenser is compared with the 4th preset temperature value；
When the outlet temperature of the condenser is more than four preset temperature value, the outdoor fan is controlled with the second rotating speed
Operation；
When the outlet temperature of the condenser is less than or equal to four preset temperature value, by the outlet temperature of the condenser
Degree is compared with the 5th preset temperature value；
When the outlet temperature of the condenser is more than five preset temperature value, the outdoor fan is controlled with the 3rd rotating speed
Operation；
When the outlet temperature of the condenser is less than or equal to five preset temperature value, by the outlet temperature of the condenser
Degree is compared with the 6th preset temperature value；
When the outlet temperature of the condenser is more than six preset temperature value, the outdoor fan is controlled with the 4th rotating speed
Operation；
When the outlet temperature of the condenser is less than or equal to six preset temperature value, controls the outdoor fan and close
Close.
10. the control method of air-conditioning system according to claim 9, it is characterised in that the outlet of the detection condenser
The step of temperature, specifically includes：
Air-conditioning system operation refrigeration, detects outdoor environment temperature；
When outdoor environment temperature is more than seven preset temperature values, control outdoor fan is run with the second rotating speed；
When outdoor environment temperature is less than or equal to seven preset temperature values, then detect the outlet temperature of condenser.
The control method of 11. air-conditioning systems according to claim 9, it is characterised in that also include step：
The inner disc temperature of detection evaporimeter；
When the evaporimeter inner disc temperature within the default time continuously less than or be equal to the second preset temperature value when, control pressure
Contracting machine and outdoor fan are closed and control indoor fan is transformed into the operation of the first rotating speed from current rotating speed.
The control method of 12. air-conditioning systems according to claim 11, it is characterised in that described interior when the evaporimeter
Disk temperature within the default time continuously less than or when being equal to the second preset temperature value, control compressor and outdoor fan close and
After indoor fan is transformed into the step of the first rotating speed runs from current rotating speed, also include step：
When the inner disc temperature of the evaporimeter is more than or equal to three preset temperature values, the compressor and outdoor fan is controlled
Start and control the indoor fan the current rotating speed operation is transformed into from the first rotating speed.
The control method of 13. air-conditioning systems according to claim 9, it is characterised in that also include step：
The outlet temperature of detection evaporimeter；
Judge the outlet temperature of the evaporimeter whether less than the first preset temperature value；
When the temperature of the evaporator outlet is less than first preset temperature value, controls first magnetic valve and open and institute
State the second closed electromagnetic valve；
When the outlet temperature of the evaporimeter is more than or equal to first preset temperature value, controls first magnetic valve and close
Close and second magnetic valve is opened.
A kind of 14. control methods for being applied to the air-conditioning system described in claim 1,4 or 5, it is characterised in that the air-conditioning system
System also includes outdoor fan；The control method includes step：
The air-conditioning system operation refrigeration, detects condensator outlet temperature；
The outlet temperature of the condenser is compared with the 4th preset temperature value；
When the outlet temperature of the condenser is more than four preset temperature value, the outdoor fan is controlled with the second rotating speed
Operation；
When the outlet temperature of the condenser is less than or equal to four preset temperature value, by the condensator outlet temperature
It is compared with the 5th preset temperature value；
When the outlet temperature of the condenser is more than five preset temperature value, the outdoor fan is controlled with the 3rd rotating speed
Operation；
When the outlet temperature of the condenser is less than or equal to five preset temperature value, by the condensator outlet temperature
It is compared with the 6th preset temperature value；
When the outlet temperature of the condenser is more than six preset temperature value, the outdoor fan is controlled with the 4th rotating speed
Operation；
When the outlet temperature of the condenser is less than or equal to six preset temperature value, controls the outdoor fan and close
Close.
The control method of 15. air-conditioning systems according to claim 14, it is characterised in that the detection condensator outlet temperature
The step of spending specifically includes：
Air-conditioning system operation refrigeration, detects outdoor environment temperature；
When outdoor environment temperature is more than seven preset temperature values, control outdoor fan is run with the second rotating speed；
When outdoor environment temperature is less than or equal to seven preset temperature values, then detect the outlet temperature of condenser.
The control method of 16. air-conditioning systems according to claim 14, it is characterised in that also include step：
The inner disc temperature of detection evaporimeter；
When the evaporimeter inner disc temperature within the default time continuously less than or be equal to the second preset temperature value when, control pressure
Contracting machine and outdoor fan are closed and control indoor fan is transformed into the operation of the first rotating speed from current rotating speed.
The control method of 17. air-conditioning systems according to claim 16, it is characterised in that described interior when the evaporimeter
Disk temperature within the default time continuously less than or when being equal to the second preset temperature value, control compressor and outdoor fan close and
After indoor fan is transformed into the step of the first rotating speed runs from current rotating speed, also include step：
When the inner disc temperature of the evaporimeter is more than or equal to three preset temperature values, the compressor and outdoor fan is controlled
Start and control the indoor fan the current rotating speed operation is transformed into from the first rotating speed.
The control method of 18. air-conditioning systems according to claim 14, it is characterised in that also include step：
The outlet temperature of detection evaporimeter；
Judge the outlet temperature of the evaporimeter whether less than the first preset temperature value；
When the outlet temperature of the evaporimeter is less than first preset temperature value, controls first magnetic valve and open and institute
State the second closed electromagnetic valve；
When the outlet temperature of the evaporimeter is more than or equal to first preset temperature value, controls first magnetic valve and close
Close and second magnetic valve is opened.
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| CN201310273427.4A CN103398515B (en) | 2013-07-01 | 2013-07-01 | Air-conditioning system and its control method |
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| CN201310273427.4A CN103398515B (en) | 2013-07-01 | 2013-07-01 | Air-conditioning system and its control method |
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| CN103398515B true CN103398515B (en) | 2017-03-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807987B (en) * | 2014-03-07 | 2017-01-18 | 珠海格力电器股份有限公司 | High-pressure preventing system and high-pressure preventing method for air conditioner |
| CN104132487B (en) * | 2014-07-24 | 2017-01-18 | 康特能源科技(苏州)有限公司 | Air source heat pump system of double-pressure control |
| CN112776556B (en) * | 2019-11-11 | 2023-04-14 | 宇通客车股份有限公司 | Vehicle fixed-displacement single-compressor double-area air conditioning system and liquid impact prevention method thereof |
| CN111023515B (en) * | 2019-12-18 | 2021-08-13 | 广东美的制冷设备有限公司 | Air conditioner, refrigeration control method of air conditioner and storage medium |
| CN111947280A (en) * | 2020-07-16 | 2020-11-17 | 海信（山东）空调有限公司 | Air conditioning system and control method thereof |
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| JPH07190515A (en) * | 1993-11-19 | 1995-07-28 | Sanyo Electric Co Ltd | Freezer |
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| CN202361718U (en) * | 2011-12-12 | 2012-08-01 | 广州联合冷热设备有限公司 | Air source heat pump hot-water system with regenerative liquid removing device |
| CN202973682U (en) * | 2012-12-17 | 2013-06-05 | 广州科力新能源有限公司 | Low-temperature-type air source heat pump hot water machine using heat-regeneration liquid-removing steam oil |
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| JPH07190515A (en) * | 1993-11-19 | 1995-07-28 | Sanyo Electric Co Ltd | Freezer |
| CN201093668Y (en) * | 2007-08-10 | 2008-07-30 | 以莱特空调(深圳)有限公司 | System for controlling air conditioner outdoor fan rotational speed |
| CN202361718U (en) * | 2011-12-12 | 2012-08-01 | 广州联合冷热设备有限公司 | Air source heat pump hot-water system with regenerative liquid removing device |
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| CN103398515A (en) | 2013-11-20 |
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