CN106839294A - Control method and device when multiple on-line system and its cryogenic refrigeration - Google Patents
Control method and device when multiple on-line system and its cryogenic refrigeration Download PDFInfo
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- CN106839294A CN106839294A CN201710040941.1A CN201710040941A CN106839294A CN 106839294 A CN106839294 A CN 106839294A CN 201710040941 A CN201710040941 A CN 201710040941A CN 106839294 A CN106839294 A CN 106839294A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2120/00—Control inputs relating to users or occupants
- F24F2120/10—Occupancy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/40—Pressure, e.g. wind pressure
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses control method and device when a kind of multiple on-line system and its cryogenic refrigeration, wherein, the described method comprises the following steps：Outdoor environment temperature is obtained, and obtains high-pressure when multiple on-line system is run；When judging that multiple on-line system enters cryogenic refrigeration operational mode according to outdoor environment temperature and high-pressure, the degree of supercooling of multiple on-line system is calculated；Degree of supercooling according to multiple on-line system is controlled to the windscreen of outdoor fan.The method according to the invention, can not only improve the refrigeration of multiple on-line system, additionally it is possible to improve the operational reliability and service life of multiple on-line system.
Description
Technical field
The present invention relates to controlling party during a kind of multiple on-line system technical field, more particularly to multiple on-line system cryogenic refrigeration
Control device and a kind of multiple on-line system when method, a kind of multiple on-line system cryogenic refrigeration.
Background technology
During multiple on-line system refrigerating operaton, outdoor fan windscreen is typically adjusted according to system pressure.But in low temperature ring
When being run under border, typically than relatively low, now windscreen conversion causes the scope very little of pressure oscillation to system pressure, therefore, it is difficult to carry out
The control of windscreen conversion, and easily there is the situation of blower fan frequent start-stop, influence the service life of blower fan.Especially in ultralow temperature
Under environmental condition, easily occur in when should need to open blower fan, pressure is low and situation that blower fan is not opened, makes outer function power
Can not effectively bring into play, the effect of influence multiple on-line system refrigeration.If opening too low, the wind of the corresponding pressure setting of blower fan
Machine opens final vacuum rapid drop in temperature, the not enough situation of discharge superheat easily occurs, influences life-span of compressor and multi-joint
The reliability of machine system.
The content of the invention
It is contemplated that at least solving one of technical problem in above-mentioned technology to a certain extent.Therefore, of the invention
One purpose is control method when proposing a kind of multiple on-line system cryogenic refrigeration, can not only improve the system of multiple on-line system
Cold effect, additionally it is possible to improve the operational reliability and service life of multiple on-line system.
Second object of the present invention is control device when proposing a kind of multiple on-line system cryogenic refrigeration.
Third object of the present invention is to propose a kind of multiple on-line system.
To reach above-mentioned purpose, first aspect present invention embodiment proposes control during a kind of multiple on-line system cryogenic refrigeration
Method processed, the method is comprised the following steps：Outdoor environment temperature is obtained, and obtains the high pressure pressure when multiple on-line system is run
Power；Judge that the multiple on-line system enters cryogenic refrigeration operational mode according to the outdoor environment temperature and the high-pressure
When, calculate the degree of supercooling of the multiple on-line system；Degree of supercooling according to the multiple on-line system is carried out to the windscreen of outdoor fan
Control.
Control method during multiple on-line system cryogenic refrigeration according to embodiments of the present invention, in outdoor environment temperature and multi-joint
High-pressure during machine system operation can control multiple on-line system and enters cryogenic refrigeration operational mode when meeting certain condition, low
Under warm cooling operation mode, the windscreen of outdoor fan can be controlled according to degree of supercooling, can effectively prevent outdoor fan frequently
The situation of numerous start and stop, so as to the refrigeration of multiple on-line system can not only be improved, additionally it is possible to improve the operation of multiple on-line system
Reliability and service life.
In addition, according to the above embodiment of the present invention propose multiple on-line system cryogenic refrigeration when control method can also have
There is following additional technical characteristic：
Specifically, judge that the multiple on-line system enters low temperature system according to the outdoor environment temperature and the high-pressure
Cold operation pattern, including：Judge the outdoor environment temperature whether less than the first temperature threshold；Whether judge the high-pressure
Less than first pressure threshold value；If the outdoor environment temperature is less than institute less than first temperature threshold or the high-pressure
First pressure threshold value is stated, then controls the multiple on-line system to enter cryogenic refrigeration operational mode.
Specifically, the degree of supercooling of the multiple on-line system is calculated, including：Obtain the condensator outlet of the multiple on-line system
Temperature；The mistake of multiple on-line system according to the corresponding saturation temperature of the high-pressure and the condensator outlet temperature computation
Cold degree.
Specifically, the degree of supercooling according to the multiple on-line system is controlled to the windscreen of the outdoor fan, including：Sentence
Whether the degree of supercooling of breaking is more than the first setting value；If the degree of supercooling is more than first setting value, the room is reduced
The windscreen of outer blower fan；If the degree of supercooling is less than or equal to first setting value, whether the degree of supercooling is determined whether
Less than the second setting value, wherein, second setting value is less than first setting value；If the degree of supercooling is less than described the
Two setting values, then improve the windscreen of the outdoor fan.
To reach above-mentioned purpose, second aspect present invention embodiment proposes control during a kind of multiple on-line system cryogenic refrigeration
Device processed, the device includes：First acquisition module, first acquisition module is used to obtain outdoor environment temperature；Second obtains
Module, second acquisition module is used to obtain the high-pressure when multiple on-line system is run；Control module, the control
Module is used to judge that the multiple on-line system is run into cryogenic refrigeration according to the outdoor environment temperature and the high-pressure
During pattern, the degree of supercooling of the multiple on-line system is calculated, and according to the degree of supercooling of the multiple on-line system to the wind of outdoor fan
Gear is controlled.
Control device during multiple on-line system cryogenic refrigeration according to embodiments of the present invention, control module is in outdoor environment temperature
High-pressure when degree and multiple on-line system are run can control multiple on-line system and run into cryogenic refrigeration when meeting certain condition
Pattern, under cryogenic refrigeration operational mode, can be controlled according to degree of supercooling to the windscreen of outdoor fan, can effectively prevent room
The situation of outer blower fan frequent start-stop, so as to the refrigeration of multiple on-line system can not only be improved, additionally it is possible to improve multi-connected machine system
The operational reliability and service life of system.
In addition, according to the above embodiment of the present invention propose multiple on-line system cryogenic refrigeration when control device can also have
There is following additional technical characteristic：
Specifically, whether the control module is used to judge the outdoor environment temperature less than the first temperature threshold, and sentences
Whether the high-pressure that breaks is less than first pressure threshold value, and is less than first temperature threshold in the outdoor environment temperature
Or the high-pressure is when being less than the first pressure threshold value, the multiple on-line system is controlled to enter cryogenic refrigeration operational mode.
Specifically, control device during described multiple on-line system cryogenic refrigeration also includes：3rd acquisition module, described
Three acquisition modules are used to obtain the condensator outlet temperature of the multiple on-line system, wherein, the control module is according to the height
The degree of supercooling of the corresponding saturation temperature of pressure pressure and multiple on-line system described in the condensator outlet temperature computation.
Specifically, whether the control module is used to judge the degree of supercooling more than the first setting value, in the degree of supercooling
During more than first setting value, the windscreen of the outdoor fan is reduced, in the degree of supercooling less than or equal to the described first setting
During value, whether the degree of supercooling is determined whether less than the second setting value, when the degree of supercooling is less than second setting value,
The windscreen of the outdoor fan is improved, wherein, second setting value is less than first setting value.
To reach above-mentioned purpose, third aspect present invention embodiment proposes a kind of multiple on-line system, and it includes the present invention
Control device during the multiple on-line system cryogenic refrigeration that second aspect embodiment is proposed.
Multiple on-line system according to embodiments of the present invention, can not only improve refrigeration, additionally it is possible to improve reliable
Property and service life.
Brief description of the drawings
The flow chart of control method when Fig. 1 is the multiple on-line system cryogenic refrigeration according to the embodiment of the present invention；
The flow of control method when Fig. 2 is the multiple on-line system cryogenic refrigeration according to one specific embodiment of the present invention
Figure；
The block diagram of control device when Fig. 3 is the multiple on-line system cryogenic refrigeration according to the embodiment of the present invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, it is intended to for explaining the present invention, and be not considered as limiting the invention.
Control method when below in conjunction with the accompanying drawings come the multiple on-line system and its cryogenic refrigeration that describe the embodiment of the present invention and
Device.
The flow chart of control method when Fig. 1 is the multiple on-line system cryogenic refrigeration according to the embodiment of the present invention.
As shown in figure 1, the control method during multiple on-line system cryogenic refrigeration of the embodiment of the present invention, comprises the following steps：
S1, obtains outdoor environment temperature, and obtain high-pressure when multiple on-line system is run.
The multiple on-line system of the embodiment of the present invention may include an outdoor unit and multiple indoor sets.In a reality of the invention
Apply in example, outdoor environment temperature can be obtained by being built in the environment temperature sensor of outdoor unit, and can be by being disposed in the outdoor
Pressure sensor at machine condenser obtains high-pressure when multiple on-line system is run.
S2, when judging that multiple on-line system enters cryogenic refrigeration operational mode according to outdoor environment temperature and high-pressure, meter
Calculate the degree of supercooling of multiple on-line system.
The multiple on-line system of the embodiment of the present invention can carry out refrigerating operaton or main refrigerating operaton, when outdoor environment temperature is relative
During too low or relatively too low high-pressure, cryogenic refrigeration operational mode can be entered.
Specifically, whether whether outdoor environment temperature T1 is can determine whether less than the first temperature threshold a, and judges high-pressure P
Less than first pressure threshold value b, if outdoor environment temperature T1 is less than first pressure less than the first temperature threshold a or high-pressure P
Threshold value b, then control multiple on-line system to enter cryogenic refrigeration operational mode.
After multiple on-line system enters cryogenic refrigeration operational mode, the condensator outlet temperature of multiple on-line system can be obtained,
And according to the corresponding saturation temperature of high-pressure and the degree of supercooling of condensator outlet temperature computation multiple on-line system.Can specifically pass through
The temperature-sensitive bag for being disposed in the outdoor machine condensator outlet obtains condensator outlet temperature, and computational methods see below formula：
△ T=Tp-Tc,
Wherein, △ T are the degree of supercooling of multiple on-line system, and Tp is the corresponding saturation temperature of high-pressure, and Tc goes out for condenser
Mouth temperature.
S3, the degree of supercooling according to multiple on-line system is controlled to the windscreen of outdoor fan.
Specifically, can determine whether degree of supercooling △ T whether more than the first setting value g.If degree of supercooling △ T are more than the first setting value
G, then reduce the windscreen of outdoor fan, if degree of supercooling △ T are less than or equal to the first setting value g, determines whether degree of supercooling △ T
Whether the second setting value h is less than.If degree of supercooling △ T are less than the second setting value h, the windscreen of outdoor fan is improved.Wherein,
Two setting value h are less than the first setting value g.
In one embodiment of the invention, the windscreen of outdoor fan can be corresponded with the tachometer value of outdoor fan,
That is, the rotating speed of outdoor fan can be controlled according to the degree of supercooling of multiple on-line system, when degree of supercooling is relatively low, can improve
Outdoor fan turn, to ensure the lower cooling capacity of outdoor unit.
In one particular embodiment of the present invention, as shown in Fig. 2 control method during multiple on-line system cryogenic refrigeration can
Comprise the following steps：
S201, obtains the initial windscreen of outdoor fan.
S202, determines whether T1 ＜ a or P ＜ b.If it is, control multiple on-line system enters cryogenic refrigeration runs mould
Formula, performs step S203；If it is not, then return to step S201, maintains current operating conditions, or the controlling stream for performing current default
Journey.
S203, determines whether △ T ＞ g.If it is, performing step S204；If it is not, then performing step S205.
S204, windscreen subtracts 1 gear.The numerical value of windscreen can be with outdoor fan tachometer value correlation, i.e. the windscreen gear that subtracts 1
When, outdoor fan rotating speed correspondence reduces corresponding amount.
S205, determines whether △ T ＜ h.If it is, performing step S206；If it is not, then return to step S203.
S206, windscreen adds 1 gear.I.e. outdoor fan rotating speed correspondence increases corresponding amount.
Control method during multiple on-line system cryogenic refrigeration according to embodiments of the present invention, in outdoor environment temperature and multi-joint
High-pressure during machine system operation can control multiple on-line system and enters cryogenic refrigeration operational mode when meeting certain condition, low
Under warm cooling operation mode, the windscreen of outdoor fan can be controlled according to degree of supercooling, can effectively prevent outdoor fan frequently
The situation of numerous start and stop, so as to the refrigeration of multiple on-line system can not only be improved, additionally it is possible to improve the operation of multiple on-line system
Reliability and service life.
Control method during for the multiple on-line system cryogenic refrigeration for realizing above-described embodiment, the present invention also proposes a kind of multi-joint
Control device when machine system hypothermia freezes.
As shown in figure 3, the control device during multiple on-line system cryogenic refrigeration of the embodiment of the present invention, including the first acquisition mould
Block 10, the second acquisition module 20 and control module 30.
Wherein, the first acquisition module 10 is used to obtain outdoor environment temperature, and the second acquisition module 20 is used to obtain multi-connected machine
High-pressure during system operation, control module 30 is used to judge that multiple on-line system is entered according to outdoor environment temperature and high-pressure
When entering cryogenic refrigeration operational mode, the degree of supercooling of multiple on-line system is calculated, and according to the degree of supercooling of multiple on-line system to outdoor wind
The windscreen of machine is controlled.
The multiple on-line system of the embodiment of the present invention may include an outdoor unit and multiple indoor sets.In a reality of the invention
Apply in example, the first acquisition module 10 can be the environment temperature sensor for being built in outdoor unit, the second acquisition module 20 can be setting
Pressure sensor at outdoor condenser.
The multiple on-line system of the embodiment of the present invention can carry out refrigerating operaton or main refrigerating operaton, when outdoor environment temperature is relative
During too low or relatively too low high-pressure, can control multiple on-line system and enter cryogenic refrigeration operational mode.
Specifically, whether control module 30 can determine whether outdoor environment temperature T1 less than the first temperature threshold a, and judge high pressure
Whether pressure P is less than first pressure threshold value b, and small less than the first temperature threshold a or high-pressure P in outdoor environment temperature T1
When first pressure threshold value b, control multiple on-line system enters cryogenic refrigeration operational mode.
The control device of the embodiment of the present invention may also include the 3rd acquisition module, and the 3rd acquisition module can be used to obtain multi-joint
The condensator outlet temperature of machine system, wherein, the 3rd acquisition module can be the temperature-sensitive bag for being disposed in the outdoor machine condensator outlet, control
Molding block 30 can be according to the corresponding saturation temperature of high-pressure and the degree of supercooling of condensator outlet temperature computation multiple on-line system.Tool
Body ground, control module 30 can be calculated according to below equation：
△ T=Tp-Tc,
Wherein, △ T are the degree of supercooling of multiple on-line system, and Tp is the corresponding saturation temperature of high-pressure, and Tc goes out for condenser
Mouth temperature.
After acquisition degree of supercooling is calculated, whether control module 30 can determine whether degree of supercooling △ T more than the first setting value g, in mistake
When cold degree △ T are more than the first setting value g, it is possible to decrease the windscreen of outdoor fan.The first setting value g is less than or equal in degree of supercooling △ T
When, whether degree of supercooling △ T can be determined whether less than the second setting value h.When degree of supercooling △ T are less than the second setting value h, can carry
The windscreen of outdoor fan high.Wherein, the second setting value h is less than the first setting value g.
In one embodiment of the invention, the windscreen of outdoor fan can be corresponded with the tachometer value of outdoor fan,
That is, the rotating speed of outdoor fan can be controlled according to the degree of supercooling of multiple on-line system, when degree of supercooling is relatively low, can improve
Outdoor fan turn, to ensure the lower cooling capacity of outdoor unit.
Control device during multiple on-line system cryogenic refrigeration according to embodiments of the present invention, control module is in outdoor environment temperature
High-pressure when degree and multiple on-line system are run can control multiple on-line system and run into cryogenic refrigeration when meeting certain condition
Pattern, under cryogenic refrigeration operational mode, can be controlled according to degree of supercooling to the windscreen of outdoor fan, can effectively prevent room
The situation of outer blower fan frequent start-stop, so as to the refrigeration of multiple on-line system can not only be improved, additionally it is possible to improve multi-connected machine system
The operational reliability and service life of system.
Correspondence above-described embodiment, the present invention also proposes a kind of multiple on-line system, and it includes that the above embodiment of the present invention is proposed
Multiple on-line system cryogenic refrigeration when control device, specific embodiment can refer to above-described embodiment, to avoid redundancy,
This is repeated no more.
Multiple on-line system according to embodiments of the present invention, can not only improve refrigeration, additionally it is possible to improve reliable
Property and service life.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outward ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description, must rather than the device or element for indicating or imply meaning
With specific orientation, with specific azimuth configuration and operation, therefore must be not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In the description of the invention, " multiple " is meant that two or more,
Unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be that machinery connects
Connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or two interaction relationships of element.For the ordinary skill in the art, can be according to specific feelings
Condition understands above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be with
It is the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office
Combined in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
Art personnel can be tied the feature of the different embodiments or example described in this specification and different embodiments or example
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (9)
1. control method during a kind of multiple on-line system cryogenic refrigeration, it is characterised in that comprise the following steps：
Outdoor environment temperature is obtained, and obtains the high-pressure when multiple on-line system is run；
Judge that the multiple on-line system enters cryogenic refrigeration operational mode according to the outdoor environment temperature and the high-pressure
When, calculate the degree of supercooling of the multiple on-line system；
Degree of supercooling according to the multiple on-line system is controlled to the windscreen of outdoor fan.
2. control method during multiple on-line system cryogenic refrigeration according to claim 1, it is characterised in that according to the room
External environment temperature and the high-pressure judge that the multiple on-line system enters cryogenic refrigeration operational mode, including：
Judge the outdoor environment temperature whether less than the first temperature threshold；
Judge the high-pressure whether less than first pressure threshold value；
If the outdoor environment temperature is less than the first pressure threshold less than first temperature threshold or the high-pressure
Value, then control the multiple on-line system to enter cryogenic refrigeration operational mode.
3. control method during multiple on-line system cryogenic refrigeration according to claim 2, it is characterised in that calculate described many
The degree of supercooling of on-line system, including：
Obtain the condensator outlet temperature of the multiple on-line system；
The mistake of multiple on-line system according to the corresponding saturation temperature of the high-pressure and the condensator outlet temperature computation
Cold degree.
4. control method during multiple on-line system cryogenic refrigeration according to any one of claim 1-3, it is characterised in that
Degree of supercooling according to the multiple on-line system is controlled to the windscreen of the outdoor fan, including：
Judge the degree of supercooling whether more than the first setting value；
If the degree of supercooling is more than first setting value, the windscreen of the outdoor fan is reduced；
If the degree of supercooling is less than or equal to first setting value, determine whether whether the degree of supercooling sets less than second
Definite value, wherein, second setting value is less than first setting value；
If the degree of supercooling is less than second setting value, the windscreen of the outdoor fan is improved.
5. control device during a kind of multiple on-line system cryogenic refrigeration, it is characterised in that including：
First acquisition module, first acquisition module is used to obtain outdoor environment temperature；
Second acquisition module, second acquisition module is used to obtain the high-pressure when multiple on-line system is run；
Control module, the control module is used to judge the multi-connected machine according to the outdoor environment temperature and the high-pressure
When system enters cryogenic refrigeration operational mode, the degree of supercooling of the multiple on-line system is calculated, and according to the multiple on-line system
Degree of supercooling is controlled to the windscreen of outdoor fan.
6. control device during multiple on-line system cryogenic refrigeration according to claim 5, it is characterised in that the control mould
Whether whether block is used to judge the outdoor environment temperature less than the first temperature threshold, and judge the high-pressure less than first
Pressure threshold, and it is less than described first less than first temperature threshold or the high-pressure in the outdoor environment temperature
During pressure threshold, the multiple on-line system is controlled to enter cryogenic refrigeration operational mode.
7. control device during multiple on-line system cryogenic refrigeration according to claim 6, it is characterised in that also include：
3rd acquisition module, the 3rd acquisition module is used to obtain the condensator outlet temperature of the multiple on-line system,
Wherein, the control module is according to the corresponding saturation temperature of the high-pressure and the condensator outlet temperature computation institute
State the degree of supercooling of multiple on-line system.
8. control device during multiple on-line system cryogenic refrigeration according to any one of claim 5-7, it is characterised in that
Whether the control module is used to judge the degree of supercooling more than the first setting value, in the degree of supercooling more than the described first setting
During value, the windscreen of the outdoor fan is reduced, when the degree of supercooling is less than or equal to first setting value, determine whether institute
Whether degree of supercooling is stated less than the second setting value, when the degree of supercooling is less than second setting value, the outdoor fan is improved
Windscreen, wherein, second setting value be less than first setting value.
9. a kind of multiple on-line system, it is characterised in that low including the multiple on-line system according to any one of claim 5-8
Control device during temperature refrigeration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710040941.1A CN106839294A (en) | 2017-01-17 | 2017-01-17 | Control method and device when multiple on-line system and its cryogenic refrigeration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710040941.1A CN106839294A (en) | 2017-01-17 | 2017-01-17 | Control method and device when multiple on-line system and its cryogenic refrigeration |
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| Publication Number | Publication Date |
|---|---|
| CN106839294A true CN106839294A (en) | 2017-06-13 |
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| CN201710040941.1A Withdrawn CN106839294A (en) | 2017-01-17 | 2017-01-17 | Control method and device when multiple on-line system and its cryogenic refrigeration |
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| CN107421171A (en) * | 2017-06-20 | 2017-12-01 | 广东海悟科技有限公司 | It is a kind of to determine the anti-cavitation system of frequency refrigerated medium pump entrance and its control method |
| CN107421172A (en) * | 2017-06-20 | 2017-12-01 | 广东海悟科技有限公司 | A kind of anti-cavitation system of frequency conversion refrigerated medium pump entrance and its control method |
| CN107917512A (en) * | 2017-11-03 | 2018-04-17 | 广东美的暖通设备有限公司 | A kind of control method of air-conditioning system, device and air conditioner |
| CN109210672A (en) * | 2018-08-01 | 2019-01-15 | 珠海格力电器股份有限公司 | A kind of control method of outdoor fan, device, outdoor fan and air-conditioning system |
| CN110360780A (en) * | 2019-07-23 | 2019-10-22 | 珠海格力电器股份有限公司 | Multi-line system and its degree of supercooling determine method, apparatus and equipment, storage medium |
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| CN111964238A (en) * | 2020-08-24 | 2020-11-20 | 广东美的暖通设备有限公司 | Control method and device of air conditioner, air conditioner and readable storage medium |
| CN113915723A (en) * | 2021-11-09 | 2022-01-11 | 宁波奥克斯电气股份有限公司 | Control method of air conditioner outdoor unit and air conditioner |
| CN114777312A (en) * | 2022-05-17 | 2022-07-22 | 宁波奥克斯电气股份有限公司 | Low-temperature refrigeration continuous operation control method and device, air conditioner and storage medium |
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| CN110360780A (en) * | 2019-07-23 | 2019-10-22 | 珠海格力电器股份有限公司 | Multi-line system and its degree of supercooling determine method, apparatus and equipment, storage medium |
| CN110440406A (en) * | 2019-08-05 | 2019-11-12 | 珠海格力电器股份有限公司 | A kind of blower control method, device and unit equipment |
| CN111964238A (en) * | 2020-08-24 | 2020-11-20 | 广东美的暖通设备有限公司 | Control method and device of air conditioner, air conditioner and readable storage medium |
| CN111964238B (en) * | 2020-08-24 | 2022-03-25 | 广东美的暖通设备有限公司 | Control method and device of air conditioner, air conditioner and readable storage medium |
| CN113915723A (en) * | 2021-11-09 | 2022-01-11 | 宁波奥克斯电气股份有限公司 | Control method of air conditioner outdoor unit and air conditioner |
| CN114777312A (en) * | 2022-05-17 | 2022-07-22 | 宁波奥克斯电气股份有限公司 | Low-temperature refrigeration continuous operation control method and device, air conditioner and storage medium |
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