CN104154690B - The emptier of central air conditioner system and control method, central air conditioner system - Google Patents
The emptier of central air conditioner system and control method, central air conditioner system Download PDFInfo
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- CN104154690B CN104154690B CN201410380670.0A CN201410380670A CN104154690B CN 104154690 B CN104154690 B CN 104154690B CN 201410380670 A CN201410380670 A CN 201410380670A CN 104154690 B CN104154690 B CN 104154690B
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Abstract
The invention provides emptier and control method, the central air conditioner system of a kind of central air conditioner system.The emptier of this central air conditioner system includes: container, and container is connected with central air conditioner system；Vacuum extractor, vacuum extractor is connected with container；Cooling medium charging device, cooling medium charging device is connected with container；Detection device, detection device is connected with container to detect the purity of refrigerant in pressure in container and container.In accordance with the invention it is possible to accelerate vacuum pumping rate and efficiency, the simple and fast of vacuum extractor.
Description
Technical field
The present invention relates to emptier technical field, more particularly, to emptier and the control thereof of a kind of central air conditioner system
Method, central air conditioner system.
Background technology
The reasons such as Large Central Air Conditioning System is big due to volume, and the cut-off valve port of unit is little, the emptying operation before refrigerant tank note is always whole
The bottleneck operation that machine produces.As it is shown in figure 1, prior art has been used up vavuum pump 1 ' directly take out method, by system vacuum by
0.1MPa is extracted into about 100Pa.Whole process is slow, is more extracted into last evacuation speed slower, time-consumingly long.Whole process evacuates
Speed is as in figure 2 it is shown, evacuated time presents exponential type growth, and speed is slow, time-consumingly long.
Content of the invention
It is desirable to provide the emptier of a kind of central air conditioner system and control method, central air conditioner system, existing to solve
There is the long problem slow, time-consuming of the central air conditioner system speed in technology.
For solving above-mentioned technical problem, according to an aspect of the invention, it is provided the emptier of a kind of central air conditioner system,
Including: container, container is connected with central air conditioner system；Vacuum extractor, vacuum extractor is connected with container；Cooling medium charging fills
Putting, cooling medium charging device is connected with container；Detection device, detection device is connected with container to detect pressure in container and container
The purity of interior refrigerant.
Further, cooling medium charging device includes: refrigerant tank, and refrigerant tank is connected with container；Boosting assembly, boosting assembly is arranged
With the pressure in increase container between refrigerant tank and container.
Further, device for drying and filtering and the flash evaporation that the assembly that boosts includes being connected in turn between refrigerant tank and container.
Further, cooling medium charging device also includes flow control element, and flow control element is arranged on refrigerant tank and boosting assembly
Between.
Further, cooling medium charging device also includes pressure-control valve, and pressure-control valve is arranged between boosting assembly and container.
Further, detect device to include: pressure detecting element, pressure detecting element is connected with container；Refrigerant purity analysis instrument,
Refrigerant purity analysis instrument is connected with container.
Further, the emptier of central air conditioner system also includes the first stop valve being arranged on container head and is arranged on container
3rd stop valve of bottom, the first stop valve and the 3rd stop valve are connected with refrigerant purity analysis instrument by same pipeline.
Further, it is provided with the second stop valve between vacuum extractor and container.
Further, the emptier of central air conditioner system also includes injector, injector and detection device, flash evaporation and does
Dry filter all connects.
Further, the emptier of central air conditioner system also includes: switch valve, and switch valve is arranged on refrigerant tank and boosting assembly
Between.
Further, the emptier of central air conditioner system also includes control unit and warning device, control unit and detection device
Connecting, warning device is connected with control unit.
According to a further aspect in the invention, providing a kind of central air conditioner system, including emptier, emptier is above-mentioned
The emptier of central air conditioner system.
In accordance with a further aspect of the present invention, the control method of the emptier of a kind of central air conditioner system, central air-conditioning system are provided
The emptier of system includes container；Cooling medium charging device that the vacuum extractor being connected with container is connected with container and be used for examining
The detection device of the purity of refrigerant in pressure in xylometer and container；The control method of the emptier of central air conditioner system includes:
Initial perfusion refrigerant step: utilize cooling medium charging device to irrigate refrigerant to container；Initial evacuation step: utilize vacuum extractor
Container is vacuumized；Detecting step: utilize detection device to detect the refrigerant purity in container, if the refrigerant in container is pure
Degree reaches the first preset value in the given time, then stop vacuumizing；Judge step: if refrigerant purity is less than the first preset value,
Then compare the pressure in container and the size of the second preset value, if the pressure in container is more than or equal to the second preset value, then beat
Drive vacuum extractor, the purity of the refrigerant in container vacuum-pumping to container is reached the first preset value；If the pressure in container is little
In the second preset value, then close vacuum extractor, and open cooling medium charging device, the pressure in container perfusion refrigerant to container
More than or equal to the second preset value, open vacuum extractor afterwards, the purity of the refrigerant in container vacuum-pumping to container is reached
One preset value.
Further, initial perfusion refrigerant step includes: by container perfusion refrigerant until the pressure in container reaches the 3rd preset value.
Further, cooling medium charging device includes: refrigerant tank, and refrigerant tank is connected with container；Boosting assembly, boosting assembly is arranged
Pressure between refrigerant tank and container so that in container raises.
Further, detect device to include: pressure detecting element, pressure detecting element is connected with container；Refrigerant purity analysis instrument,
Refrigerant purity analysis instrument is connected with container.
Application technical scheme, when carrying out vacuumizing process to system, owing to being provided with cooling medium charging device in system
It with detection device, predetermined vacuum level can be reached is converted into the detection to the purity of refrigerant in container by vacuumizing, it is only necessary to be simple
Perfusion refrigerant process can make air-conditioning system in fixed gas be discharged to the outside of air-conditioning system, quickly save time, specifically,
First can irrigate refrigerant in container, then recycle vacuum extractor and carry out vacuumizing process, recycling detection device to container
Pressure in detection container and the purity of refrigerant in container, in the present invention, utilize the pressure in detection device detection container be for
The operation setting vacuumizing, reason is, when the pressure in container is more than certain preset value, vacuum extractor suction is true
Empty speed ratio is very fast, therefore, when the pressure in detecting device and container being detected is less than certain preset value, it is possible to use refrigerant
Device for casting irrigates refrigerant in container, increases the pressure in container, the like, until detection device detects in container
When refrigerant purity reaches another preset value, then illustrate that the content of tainer air, moisture and on-condensible gas is of a sufficiently low,
Reach the properly functioning standard of air-conditioning system.Visible, the present invention use cooling medium charging device constantly to container perfusion refrigerant
Method, accelerates vacuum pumping rate and efficiency, the simple and fast of vacuum extractor.
Brief description
A part of accompanying drawing constituting the application is used for providing a further understanding of the present invention, the illustrative examples of the present invention and
Its explanation is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 diagrammatically illustrates the front view of the vacuum extractor of the central air conditioner system of prior art；
The time that Fig. 2 diagrammatically illustrates when utilizing the vacuum extractor of existing central air conditioner system to vacuumize closes with pressure
System's figure；
Fig. 3 diagrammatically illustrates the front view of the emptier of the central air conditioner system of the present invention；And
Fig. 4 diagrammatically illustrates time and pressure when the vacuum extractor of the central air conditioner system utilizing the present invention vacuumizes
Graph of a relation.
Description of reference numerals: the 10th, container；20th, vacuum extractor；30th, cooling medium charging device；31st, refrigerant tank；32nd, rise
Pressure assembly；321st, device for drying and filtering；322nd, flash evaporation；33rd, flow control element；34th, pressure-control valve；40th, detect
Device；41st, pressure detecting element；42nd, refrigerant purity analysis instrument；50th, the first stop valve；60th, injector；70th, unidirectional
Valve；80th, the 3rd stop valve；90th, the second stop valve；100th, switch valve.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the present invention can be defined by the claims and cover
Multitude of different ways implement.
See shown in Fig. 3 and Fig. 4, according to embodiments of the invention, provide the emptier of a kind of central air conditioner system.Should
The emptier of central air conditioner system includes container the 10th, vacuum extractor the 20th, cooling medium charging device 30 and detection device 40.
Wherein, container 10 is connected with central air conditioner system (not shown)；Vacuum extractor 20 is connected with container 10, to container
10 carry out vacuumizing process；Cooling medium charging device 30 is connected with container 10, for irrigating refrigerant in container 10；Detection device
40 are connected with container 10 to detect the purity of refrigerant in pressure in container 10 and container 10.According to embodiments of the invention,
When vacuumizing process is carried out to system, owing to system being provided with cooling medium charging device 30 and detection device 40, can will vacuumize
Reach predetermined vacuum level and be converted into the detection to the purity of refrigerant in container 10, it is only necessary to simple perfusion refrigerant process can make sky
Fixed gas in adjusting system is discharged to the outside of air-conditioning system, quickly saves time, and specifically, can first irrigate cold in container 10
Matchmaker, then recycles vacuum extractor 20 and carries out vacuumizing process to container 10, and recycling detection device 40 detects container 10
The purity of the refrigerant in interior pressure and container 10, in the present embodiment, the pressure utilizing detection device 40 to detect in container 10 is
For the operation setting that vacuumizes, reason is, when the pressure in container 10 is more than certain preset value, and vacuum extractor 20
The speed of aspiration vacuum is than very fast, therefore, when the pressure in detecting device 40 and container 10 being detected is less than certain preset value,
Cooling medium charging device 30 can be utilized to irrigate refrigerant in container 10, increase the pressure in container 10, the like, until inspection
Survey device 40 when detecting that the refrigerant purity in container 10 reaches another preset value, then illustrate air in container 10, moisture with
And the content of on-condensible gas is of a sufficiently low, reach the properly functioning standard of air-conditioning system.Visible, the present embodiment use cold
Matchmaker's device for casting constantly to the method for container perfusion refrigerant, accelerates vacuum pumping rate and efficiency, the simple and fast of vacuum extractor 20.
According to embodiments of the invention, cooling medium charging device 30 includes refrigerant tank 31 and boosting assembly 32.Wherein refrigerant tank 31 with
Container 10 connects, for irrigating refrigerant to container 10；Boosting assembly 32 is arranged between refrigerant tank 31 and container 10 so that holding
Pressure in device 10 raises, it is simple to accelerates vacuum extractor 20 and carries out vacuumizing the speed of process to container 10.
Preferably, device for drying and filtering 321 and the shwoot that the assembly 32 that boosts includes being connected in turn between refrigerant tank 31 and container 10
Device 322, it is simple to liquid refrigerants heating is become gaseous coolant, makes the pressure in container 10 raise rapidly, simple in construction, boosting
Speed is fast.
Preferably, cooling medium charging device 30 also includes flow control element 33, and flow control element 33 is arranged on refrigerant tank 31 He
Between boosting assembly 32, it is simple to be adjusted the amount of the refrigerant entering in container 10, improve stability and the controllability of system.
Powerful little in order to control container 10 internal pressure further exactly, the cooling medium charging device 30 of the present embodiment also includes pressure control
Valve 34 processed, this pressure-control valve 34 is arranged between boosting assembly 32 and container 10, by detecting the detection effect of device 40,
The amount of the gaseous coolant entering in container 10 can be controlled, and then the pressure in container 10 is controlled, further
Improve the security of the emptier of whole central air conditioner system.
Referring again to shown in Fig. 3, detection device 40 includes pressure detecting element 41 and refrigerant purity analysis instrument 42, pressure detecting
Element 41 is connected with container 10 to detect pressure in container 10；Refrigerant purity analysis instrument 42 is connected with container 10 to detect container
The purity of the refrigerant in 10, simple in construction.Preferably, pressure detecting element 41 is pressure sensor.
In the present embodiment, the emptier of central air conditioner system also includes the first stop valve 50 He being arranged on container 10 top
Being arranged on the 3rd stop valve 80 of container 10 bottom, the first stop valve 50 and the 3rd stop valve 80 are pure with refrigerant by same pipeline
Degree analyzer 42 connects.During work, the first stop valve 50 and the 3rd stop valve 80 are in open mode, now, and container 10
The fluid at bottom and top enters in refrigerant purity analysis instrument 42 through same pipeline, it is possible to increase refrigerant purity analysis instrument 42
Accuracy of detection, similarly, in order to ensure the accuracy of detection of pressure detecting element 41, pressure detecting element 41 detection pressure
Also there is the pressure elected as in above-mentioned pipeline.When refrigerant purity analysis instrument 42 quits work, it is only necessary to simultaneously close off the first stop valve
50 and the 3rd stop valve 80 can prevent refrigerant from flowing in refrigerant purity analysis instrument 42.
It for the ease of operation and control, between the vacuum extractor 20 in the present embodiment and container 10, is provided with the second stop valve 90,
Preventing from stopping vacuumizing under state, in container 10, fluid flow in vacuum extractor 20.Preferably, taking out in the present embodiment
Vacuum plant 20 is vavuum pump, simple in construction, it is simple to operation.
Preferably, the emptier of central air conditioner system also includes injector 60, this injector 60 and detection device the 40th, shwoot
Device 322 and device for drying and filtering 321 all connect, and can make the refrigerant return in the refrigerant purity analysis instrument 42 of detection device 40
To system, it is ensured that the accuracy of refrigerant analysis and the recoverable of refrigerant.
Preferably, the emptier of the central air conditioner system of the present embodiment also includes the check valve 70 being arranged on container 10, should
When in container 10, pressure is excessive, container 10 can be protected by the setting of check valve 70, improves the central air-conditioning system of the present invention
The security of the emptier of system.
In the present embodiment, the emptier of central air conditioner system also includes switch valve 100 and control unit (not shown),
Wherein switch valve 100 is arranged between refrigerant tank 31 and boosting assembly 32, when without irrigating refrigerant to container 10, by opening
The effect closing valve 100 can be cut off the pipeline disconnection between boosting assembly 32 and refrigerant tank 31.Preferably, in the present embodiment
Switch valve 100 be magnetic valve.
Preferably, the emptier of central air conditioner system also includes control unit and warning device, control unit and detection device 40
Connecting, each components and parts of the emptier of the signal pair centre air-conditioning system according to detection device detection are controlled, this control list
Unit can when PLC or logic circuit controller, warning device is connected with control unit, when the emptying of central air conditioner system
When device reaches required vacuum requirement, warning device can send alarm signal, by the effect of warning device, can remind work
Personnel carry out next step operation, it is simple to realize that automation vacuumizes.
According to another embodiment of the present invention, providing a kind of central air conditioner system, including emptier, emptier is above-mentioned
The emptier of central air conditioner system.
According to one more embodiment of the present invention, provide the control method of the emptier of a kind of central air conditioner system, the present embodiment
In the emptier for above-mentioned central air conditioner system.The control method of the emptier of the central air conditioner system in the present embodiment
Including: initial perfusion refrigerant step: utilize cooling medium charging device 30 to irrigate refrigerant to container 10；Initial evacuation step: profit
With vacuum extractor 20, container 10 is vacuumized；Detecting step: utilize detection device 40 to detect the refrigerant in container 10
Purity, if the refrigerant purity in container 10 reaches the first preset value in the given time, then stops vacuumizing；Judge step:
If refrigerant purity is less than the first preset value, then compare the pressure in container 10 and the size of the second preset value, if container 10
Interior pressure is more than or equal to the second preset value, then open vacuum extractor 20, vacuumize container 10, to container 10
The purity of refrigerant reaches the first preset value；If the pressure in container 10 is less than the second preset value, then close vacuum extractor 20,
And open cooling medium charging device 30, irrigate refrigerant to container 10 and be more than or equal to the second preset value to the pressure in container 10, it
After open vacuum extractor 20, the purity of the refrigerant being evacuated to container 10 in container 10 reaches the first preset value.According to this
The method of embodiment, can make the pressure in container 10 be maintained at the state being easy to vacuumize, be changed to cold by the detection vacuumizing
The detection of matchmaker's purity, is greatly saved the time vacuumizing central air-conditioning, accelerate vacuum extractor vacuum pumping rate and
Efficiency.
During tentatively irrigating refrigerant step, open magnetic valve and pressure-control valve 34, now cold in refrigerant tank 31
Matchmaker is flowed in device for drying and filtering 321 and flash evaporation 322, and drying is flowed in container 10 after filtering evaporation, when pressure passes
Pressure in sensor detects container 10 reaches the 3rd preset value, such as during 0.1MPa, it is possible to carry out initial evacuation step.
When carrying out initial evacuation step, it is only necessary to open the second stop valve 90, making vacuum extractor 20 work can be to container
10 carry out vacuum pumping.
During initial evacuation is carried out to container 10, open the first stop valve 50 and the 3rd stop valve 80 simultaneously, make appearance
Fluid in device 10 enters in refrigerant purity analysis instrument 42, when refrigerant purity analysis instrument 42 detects container in the given time
When the purity of the refrigerant in 10 reaches the first preset value, then illustrate that the vacuum in container 10 has reached to require, then close first section
Only valve the 50th, the second stop valve 90 and the 3rd stop valve 80, make refrigerant purity analysis instrument 42 and vacuum extractor 20 stop work
Making, now, central air conditioner system can enter into normal operating conditions.
If in Preset Time, refrigerant in container 10 is not reaching to the first preset value, such as 0.1%, then compare container 10
Interior pressure and the size of the second preset value, such as 0.01MPa, if the pressure in container 10 is more than or equal to the second preset value,
Then opening vacuum extractor 20, vacuumizing container 10, the purity of the refrigerant to container 10 reaches the first preset value；If
Pressure in container 10 is less than the second preset value, then close vacuum extractor 20, and open cooling medium charging device 30, to container
10 perfusion refrigerants are more than or equal to the second preset value to the pressure in container 10, open vacuum extractor 20 afterwards, by container 10
The purity being evacuated to the refrigerant in container 10 reaches the first preset value.
It should be noted that the first preset value in the present embodiment, the second preset value, the 3rd preset value and the scheduled time
It is set with the actually used situation according to central air-conditioning and needs.
Shown in Figure 4, according to embodiments of the invention, it is only necessary to more than repeating, perfusion, about three times refrigerants of evacuation process are pure
Degree analyzer 42 detects that the refrigerant degree of purity in pressure vessel i.e. feeds back the signal of telecommunication about 0.1% (can set as required) and closes
Closing magnetic valve, and closing the stop valve etc. connecting between central air conditioner system and evacuator, evacuation system disconnects.
In the present embodiment, the refrigerant that different air-conditionings use is different, partly at the refrigerant that about 20 ° saturation pressures of room temperature are relatively low
Due to and air-conditioning system between pressure reduction relatively low, perfusion refrigerant during in order to ensure injection effect can increase refrigerant tank note machine,
Also the exhaust outlet of vavuum pump and refrigerant tank can be connected, utilize the compression cooled coal gas evacuating to improve the refrigerant pressure in refrigerant tank,
Must be provided with pressure limiting valve with the exhaust outlet of this way vavuum pump, it is ensured that pressure at expulsion is less than below the design pressure of refrigerant tank.
The present invention utilizes and evacuates from high-pressure extraction to few feature of middle pressure time, evacuates and is targeted by 0.01MPa, and pressure sensor sets
Fixed two threshold values, before evacuating for the first time, magnetic valve is normally opened, pressure-control valve when pressure sensor detects that container pressure is 0.1MPa
Closing, vavuum pump starts, and force value reaches to stop evacuating during 0.01MPa, and now refrigerant purity reaches 90%, and now system is beaten
Opening battery valve to be filled with coolant system pressure and reach 0.1MPa, the signal of telecommunication is passed to pressure-control valve, Stress control by pressure sensor
Valve cuts out, and vavuum pump starts, and is again extracted into 0.01MPa, and refrigerant purity now is 99%；Repeat above procedure third time to take out
Air cooling matchmaker, now closed electromagnetic valve, complete whole evacuation procedure, and the refrigerant purity in container reaches 99.9%.Visible, the present invention
Constant at vavuum pump, evacuate in the case that stop valve does not change size with the emptying time of a central air conditioner system reduce 50% with
On.Whole process eliminates employee and constantly checks manometric situation in direct evacuation process, utilizes this system to have only to by the time
System completes three times and evacuates, and system is provided with warning device, and after completing to evacuate, warning employee directly removes system, can be through under row
One step operation.The whole pilot process evacuating does not needs employee's special concern, eliminates the manpower of pilot process.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art
For, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any modification of being made, etc.
With replacement, improvement etc., should be included within the scope of the present invention.
Claims (15)
1. the emptier of a central air conditioner system, it is characterised in that include:
Container (10), described container (10) is connected with described central air conditioner system；
Vacuum extractor (20), described vacuum extractor (20) is connected with described container (10)；
Cooling medium charging device (30), described cooling medium charging device (30) is connected with described container (10)；
Detection device (40), described detection device (40) is connected with described container (10) to detect described container (10)
Interior pressure and the purity of the interior refrigerant of described container (10)；
Described detection device (40) includes:
Pressure detecting element (41), described pressure detecting element (41) is connected with described container (10)；
Refrigerant purity analysis instrument (42), described refrigerant purity analysis instrument (42) is connected with described container (10).
2. the emptier of central air conditioner system according to claim 1, it is characterised in that described cooling medium charging device (30)
Including:
Refrigerant tank (31), described refrigerant tank (31) is connected with described container (10)；
Boosting assembly (32), described boosting assembly (32) be arranged on described refrigerant tank (31) and described container (10) it
Between to raise the pressure in described container (10).
3. the emptier of central air conditioner system according to claim 2, it is characterised in that described boosting assembly (32) includes
The device for drying and filtering (321) being connected in turn between described refrigerant tank (31) and described container (10) and flash evaporation (322).
4. the emptier of central air conditioner system according to claim 2, it is characterised in that described cooling medium charging device (30)
Also including flow control element (33), described flow control element (33) is arranged on described refrigerant tank (31) and described liter
Between pressure assembly (32).
5. the emptier of central air conditioner system according to claim 2, it is characterised in that described cooling medium charging device (30)
Also including pressure-control valve (34), described pressure-control valve (34) is arranged on described boosting assembly (32) and described container
(10) between.
6. the emptier of central air conditioner system according to claim 1, it is characterised in that the emptying of described central air conditioner system
Device also includes the first stop valve (50) being arranged on described container (10) top and is arranged on described container (10) bottom
The 3rd stop valve (80), described first stop valve (50) and described 3rd stop valve (80) pass through same pipeline and institute
State refrigerant purity analysis instrument (42) to connect.
7. the emptier of central air conditioner system according to claim 1, it is characterised in that described vacuum extractor (20) with
It is provided with the second stop valve (90) between described container (10).
8. the emptier of central air conditioner system according to claim 3, it is characterised in that the emptying of described central air conditioner system
Device also includes injector (60), described injector (60) and described detection device (40), described flash evaporation (322)
And described device for drying and filtering (321) all connects.
9. the emptier of central air conditioner system according to claim 2, it is characterised in that the emptying of described central air conditioner system
Device also includes:
Switch valve (100), described switch valve (100) is arranged on described refrigerant tank (31) and described boosting assembly (32)
Between.
10. the emptier of central air conditioner system according to claim 1, it is characterised in that the emptying of described central air conditioner system
Device also includes control unit and warning device, and described control unit is connected with described detection device (40), described dress of reporting to the police
Put and be connected with described control unit.
11. 1 kinds of central air conditioner systems, including emptier, it is characterised in that described emptier is to appoint in claim 1 to 10
The emptier of the central air conditioner system described in.
The control method of the emptier of 12. 1 kinds of central air conditioner systems, it is characterised in that the emptier bag of described central air conditioner system
Include container (10)；The refrigerant that the vacuum extractor (20) being connected with described container (10) is connected with described container (10)
Device for casting (30) and being used for detects the purity of pressure and the interior refrigerant of described container (10) in described container (10)
Detection device (40)；The control method of the emptier of described central air conditioner system includes:
Initial perfusion refrigerant step: utilize described cooling medium charging device (30) to irrigate refrigerant to described container (10)；
Initial evacuation step: utilize described vacuum extractor (20) to vacuumize described container (10)；
Detecting step: utilize described detection device (40) to detect the refrigerant purity in described container (10), if described appearance
Refrigerant purity in device (10) reaches the first preset value in the given time, then stop vacuumizing；
Judge step: if refrigerant purity is less than described first preset value, then the pressure in more described container (10) and the
The size of two preset values, if the pressure in described container (10) is more than or equal to described second preset value, then opens described
Vacuum extractor (20), the purity of the refrigerant being evacuated to described container (10) in described container (10) reaches described
First preset value；
If the pressure in described container (10) is less than described second preset value, then close described vacuum extractor (20),
And open described cooling medium charging device (30), the pressure in described container (10) perfusion refrigerant to described container (10)
More than or equal to described second preset value, open described vacuum extractor (20) afterwards, described container (10) is vacuumized
The purity of the refrigerant to described container (10) reaches described first preset value.
The control method of the emptier of 13. central air conditioner systems according to claim 12, it is characterised in that described initial filling
Note refrigerant step includes:
By described container (10) perfusion refrigerant until the pressure in described container (10) reaches the 3rd preset value.
The control method of the emptier of 14. central air conditioner systems according to claim 12, it is characterised in that described refrigerant fills
Dispensing device (30) includes:
Refrigerant tank (31), described refrigerant tank (31) is connected with described container (10)；
Boosting assembly (32), described boosting assembly (32) be arranged on described refrigerant tank (31) and described container (10) it
Between so that pressure in described container (10) raises.
The control method of the emptier of 15. central air conditioner systems according to claim 12, it is characterised in that described detection fills
Put (40) to include:
Pressure detecting element (41), described pressure detecting element (41) is connected with described container (10)；
Refrigerant purity analysis instrument (42), described refrigerant purity analysis instrument (42) is connected with described container (10).
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| CN201410380670.0A CN104154690B (en) | 2014-08-04 | 2014-08-04 | The emptier of central air conditioner system and control method, central air conditioner system |
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| CN201410380670.0A CN104154690B (en) | 2014-08-04 | 2014-08-04 | The emptier of central air conditioner system and control method, central air conditioner system |
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| CN104154690B true CN104154690B (en) | 2016-10-05 |
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