CN106545973A - Multiple on-line system and its coolant quantity decision method - Google Patents
Multiple on-line system and its coolant quantity decision method Download PDFInfo
- Publication number
- CN106545973A CN106545973A CN201611079140.8A CN201611079140A CN106545973A CN 106545973 A CN106545973 A CN 106545973A CN 201611079140 A CN201611079140 A CN 201611079140A CN 106545973 A CN106545973 A CN 106545973A
- Authority
- CN
- China
- Prior art keywords
- compressor
- temperature
- pressure
- preset value
- line system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- 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
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of multiple on-line system and its coolant quantity decision method, the multiple on-line system includes off-premises station and multiple indoor sets, and off-premises station includes fluid reservoir and compressor, the method comprising the steps of：After control off-premises station runs the first Preset Time in a chiller mode, pressure at expulsion, the back pressure of compressor, the temperature of off-premises station pressure duct, the inlet temperature of fluid reservoir, the suction temperature of compressor and the current outdoor ambient temperature of compressor are obtained；Whether the corresponding saturation temperature of back pressure of the corresponding saturation temperature of pressure at expulsion, compressor according to compressor, the temperature of off-premises station pressure duct, the inlet temperature of fluid reservoir, the suction temperature of compressor and current outdoor ambient temperature judge coolant quantity in multiple on-line system within normal range.So as to by realizing judgement to coolant quantity according to the relevant parameter of off-premises station, it is to avoid coolant is excessive or very few reliability and comfortableness to system is impacted.
Description
Technical field
The present invention relates to air-conditioning technical field, the decision method and one kind of coolant quantity in more particularly to a kind of multiple on-line system
Multiple on-line system.
Background technology
At present, multi-connected machine has been widely used in various larger office buildings, office building, hospital and villa etc., particularly
One drags much multi-connected machines, off-premises station only to need one or in parallel several, can provide refrigeration to multiple stage indoor set simultaneously or heat, full
The cooling and warming demand of the various large-scale occasions of foot.
Multiple on-line system, particularly large-scale multiple on-line system, indoor set are relatively more, and pipeline link is complicated and pipeline is longer,
System needs the coolant quantity of filling larger.As system pipeline is complicated, indoor set is more, it is understood that there may be artificial mistake in computation, leads
There is excessive or very few situation in cause system coolant quantity, and, the weld bond number typically comparison of multiple on-line system is more, and engineering
Installation quality differentiation is larger, fills coolant etc., then system boot may be caused to occur if the system dwell time falls short of
After micro- leakage, or operation a period of time, there is cold draining matchmaker's phenomenon in Jing high-pressure systems, cause cold medium shortage.
When system coolant quantity is more, system may be caused when serious to return liquid, cause hydraulic compression, or system pressure mistake
, there is high voltage protective shutdown in height；When system coolant quantity is less, indoor set may be caused to lack coolant, indoor unit capability is not enough, no
User's cooling and warming demand can be met, and the degree of superheat may be larger, exhaust high temperature protection or low pressure may be caused to cross minimum living
Shield.Accordingly, it would be desirable to judge that this is had great significance in practice in engineering to the number of system coolant quantity.
In correlation technique, mainly by the aerofluxuss of compressor, the discharge superheat of compressor, the high pressure of system and low
Pressure, return-air degree of superheat of compressor etc. judged to system coolant quantity, but under complicated use environment, it sometimes appear that by mistake
Sentence.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.For this purpose, the present invention
One purpose is the decision method for proposing coolant quantity in a kind of multiple on-line system, by being realized according to the relevant parameter of off-premises station
Judgement to coolant quantity, it is to avoid coolant is excessive or very few reliability and comfortableness to system is impacted.
Further object is that proposing a kind of multiple on-line system.
For achieving the above object, one aspect of the present invention embodiment proposes a kind of judgement side of coolant quantity in multiple on-line system
Method, the multiple on-line system include off-premises station and multiple indoor sets, and the off-premises station includes fluid reservoir and compressor, the liquid storage
The outlet of tank is connected with the gas returning port of the compressor, be the method comprising the steps of：The off-premises station is controlled with the mould that freezes
After formula runs the first Preset Time, the pressure at expulsion of the acquisition compressor, the back pressure of the compressor, the off-premises station
The temperature of pressure duct, the inlet temperature of the fluid reservoir, the suction temperature of the compressor and current outdoor ambient temperature；Obtain
Take the corresponding saturation temperature of back pressure of the corresponding saturation temperature of pressure at expulsion and the compressor of the compressor；According to
The corresponding saturation temperature of pressure at expulsion of the compressor, the corresponding saturation temperature of back pressure of the compressor, the room
The temperature of outer machine pressure duct, the inlet temperature of the fluid reservoir, the suction temperature of the compressor and the current outdoor ring
Border temperature judges whether the coolant quantity in the multiple on-line system is in normal range.
The decision method of coolant quantity in multiple on-line system according to embodiments of the present invention, in control off-premises station in a chiller mode
After running the first Preset Time, the pressure at expulsion of acquisition compressor, the back pressure of compressor, the temperature of off-premises station pressure duct
Degree, the inlet temperature of fluid reservoir, the suction temperature of compressor and current outdoor ambient temperature, then, according to the aerofluxuss of compressor
The corresponding saturation temperature of pressure, the corresponding saturation temperature of back pressure of compressor, the temperature of off-premises station pressure duct, fluid reservoir
Inlet temperature, the suction temperature of compressor and current outdoor ambient temperature judge whether the coolant quantity in multiple on-line system is in
In normal range.So as to by the judgement to coolant quantity is realized according to the relevant parameter of off-premises station, it is to avoid coolant is excessive or very few
The reliability and comfortableness of system are impacted.
According to one embodiment of present invention, judge whether the coolant quantity in the multiple on-line system is located in the following manner
Within normal range：
S1=Tc-Tcs, wherein, Tc is the corresponding saturation temperature of pressure at expulsion of the compressor, and Tcs is default mesh
Absolute altitude presses saturation temperature；
S2=Te-Tes, wherein, Te is the corresponding saturation temperature of back pressure of the compressor, and Tes is default mesh
Mark low pressure saturation temperature；
S3=Tc-T5, wherein, T5 is the temperature of the off-premises station pressure duct；
S4=(Tc-T5)/(Tc-T4), wherein, T4 is the current outdoor ambient temperature；
Wherein, if S1 is more than the first preset value and S2 is more than the second preset value and S3 is more than the 3rd preset value and S4
More than the 4th preset value, then judge that the multiple on-line system is in many coolant running statuses.
According to one embodiment of present invention, judge whether the coolant quantity in the multiple on-line system is located in the following manner
Within normal range：
S1=Tc-Tcs, wherein, Tc is the corresponding saturation temperature of pressure at expulsion of the compressor, and Tcs is default mesh
Absolute altitude presses saturation temperature；
S2=Te-Tes, wherein, Te is the corresponding saturation temperature of back pressure of the compressor, and Tes is default mesh
Mark low pressure saturation temperature；
S3=Tc-T5, wherein, T5 is the temperature of the off-premises station pressure duct；
S4=(Tc-T5)/(Tc-T4), wherein, T4 is the current outdoor ambient temperature；
S5=T6-Te, wherein, T6 is the inlet temperature of the fluid reservoir；
S6=T7-Te+a, wherein, T7 is the suction temperature of the compressor, and a is the 5th preset value；
Wherein, if S1 is less than the 6th preset value and S2 is less than the 7th preset value and S3 is less than the 8th preset value and S4
Less than the 9th preset value and S5 is more than the tenth preset value and S6 and is more than the 11st preset value, then judge at the multiple on-line system
In few coolant running status.
According to one embodiment of present invention, after the control off-premises station runs the first Preset Time in a chiller mode,
Also include：Machine start capacity in obtaining, and the most short fortune being in obtaining the plurality of indoor set in the indoor set of open state
The row time；Whether the interior machine start capacity is judged more than the first preset capacity, and judge whether the The shortest operation time is big
In the second Preset Time；If the interior machine start capacity is more than first preset capacity and the The shortest operation time is big
In second Preset Time, then judge whether the coolant quantity in the multiple on-line system is in normal range again.
For achieving the above object, another aspect of the present invention embodiment proposes a kind of multiple on-line system, including：Off-premises station,
The off-premises station includes fluid reservoir and compressor, and the outlet of the fluid reservoir is connected with the gas returning port of the compressor；Multiple rooms
Interior machine；Control module, the control module is for controlling after the off-premises station runs the first Preset Time in a chiller mode, to obtain
Take the pressure at expulsion of the compressor, the back pressure of the compressor, the temperature of the off-premises station pressure duct, the liquid storage
The inlet temperature of tank, the suction temperature of the compressor and current outdoor ambient temperature, and obtain the exhaust pressure of the compressor
The corresponding saturation temperature of back pressure of the corresponding saturation temperature of power and the compressor, and according to the aerofluxuss of the compressor
The corresponding saturation temperature of pressure, the corresponding saturation temperature of back pressure of the compressor, the temperature of the off-premises station pressure duct
Degree, the inlet temperature of the fluid reservoir, the suction temperature of the compressor and the current outdoor ambient temperature judge described many
Whether the coolant quantity in on-line system is within normal range.
Multiple on-line system according to embodiments of the present invention, it is pre- that control module runs first in a chiller mode in control off-premises station
If after the time, obtaining the pressure at expulsion of compressor, the back pressure of compressor, the temperature of off-premises station pressure duct, fluid reservoir
Inlet temperature, the suction temperature of compressor and current outdoor ambient temperature, it is then, corresponding full according to the pressure at expulsion of compressor
With the back pressure of temperature, compressor corresponding saturation temperature, the temperature of off-premises station pressure duct, the inlet temperature of fluid reservoir,
The suction temperature and current outdoor ambient temperature of compressor judges whether the coolant quantity in multiple on-line system is in normal range.
So as to by realizing judgement to coolant quantity according to the relevant parameter of off-premises station, it is to avoid coolant is excessive or the very few reliability to system
Property and comfortableness are impacted.
According to one embodiment of present invention, during the control module judges the multiple on-line system in the following manner
Whether coolant quantity is within normal range：
S1=Tc-Tcs, wherein, Tc is the corresponding saturation temperature of pressure at expulsion of the compressor, and Tcs is default mesh
Absolute altitude presses saturation temperature；
S2=Te-Tes, wherein, Te is the corresponding saturation temperature of back pressure of the compressor, and Tes is default mesh
Mark low pressure saturation temperature；
S3=Tc-T5, wherein, T5 is the temperature of the off-premises station pressure duct；
S4=(Tc-T5)/(Tc-T4), wherein, T4 is the current outdoor ambient temperature；
Wherein, if S1 is more than the first preset value and S2 is more than the second preset value and S3 is more than the 3rd preset value and S4
More than the 4th preset value, the control module then judges that the multiple on-line system is in many coolant running statuses.
According to one embodiment of present invention, during the control module judges the multiple on-line system in the following manner
Whether coolant quantity is within normal range：
S1=Tc-Tcs, wherein, Tc is the corresponding saturation temperature of pressure at expulsion of the compressor, and Tcs is default mesh
Absolute altitude presses saturation temperature；
S2=Te-Tes, wherein, Te is the corresponding saturation temperature of back pressure of the compressor, and Tes is default mesh
Mark low pressure saturation temperature；
S3=Tc-T5, wherein, T5 is the temperature of the off-premises station pressure duct；
S4=(Tc-T5)/(Tc-T4), wherein, T4 is the current outdoor ambient temperature；
S5=T6-Te, wherein, T6 is the inlet temperature of the fluid reservoir；
S6=T7-Te+a, wherein, T7 is the suction temperature of the compressor, and a is the 5th preset value；
Wherein, if S1 is less than the 6th preset value and S2 is less than the 7th preset value and S3 is less than the 8th preset value and S4
Less than the 9th preset value and S5 is more than the tenth preset value and S6 and is more than the 11st preset value, the control module then judges described
Multiple on-line system is in few coolant running status.
According to one embodiment of present invention, the control module is additionally operable to be transported in the control off-premises station in a chiller mode
After the first Preset Time of row, interior machine start capacity is obtained, and in obtaining the plurality of indoor set, is in the indoor set of open state
In The shortest operation time, and judge that whether the interior machine start capacity is more than the first preset capacity and most short described in judging
Whether run time is more than the second Preset Time, wherein, if the interior machine start capacity be more than first preset capacity and
The The shortest operation time is more than second Preset Time, and the control module then judges cold in the multiple on-line system again
Whether matchmaker's amount is within normal range.
Description of the drawings
Fig. 1 is the flow chart of the decision method of coolant quantity in multiple on-line system according to embodiments of the present invention；
Fig. 2 is the structural representation of multiple on-line system according to an embodiment of the 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
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
With reference to the accompanying drawings describing the decision method of coolant quantity in the multiple on-line system of proposition according to embodiments of the present invention
And multiple on-line system.
Fig. 1 is the flow chart of the decision method of coolant quantity in multiple on-line system according to embodiments of the present invention.
In an embodiment of the present invention, multiple on-line system may include off-premises station and multiple indoor sets, and off-premises station includes liquid storage
Tank (low-pressure tank) and compressor, the outlet of fluid reservoir are connected with the gas returning port of compressor.
Specifically, as shown in Fig. 2 multiple on-line system may include that off-premises station 100 and multiple indoor sets (specifically do not show in figure
Go out), off-premises station 100 may include fluid reservoir 101, compressor 102, oil eliminator 103, cross valve 104, outdoor heat exchanger 106, list
To valve 105,107,108,109,110 and 111, the low pressure valve 112 being arranged on low pressure line and it is arranged on pressure duct
High pressure valve 113.
Wherein, the gas returning port of compressor 102 is connected with the outlet of fluid reservoir 101, the air vent of compressor 102 with it is separating of oil
The first end of device 103 is connected.Second end of oil eliminator 103 is connected with the first end of cross valve 104, and the second of cross valve 104
End is connected with the entrance of fluid reservoir 101.3rd end of cross valve 104 respectively with one end of check valve 105 and check valve 108 one
End is connected, and the other end of check valve 105 is connected with one end of check valve 111 and one end of outdoor heat exchanger 106 respectively, and outdoor is changed
The other end of hot device 106 is connected with one end of check valve 107 and the other end of check valve 108 respectively, the other end of check valve 107
It is connected with one end of check valve 109 and one end of high pressure valve 113 respectively, the other end of high pressure valve 113 and multiple indoor sets (if
Have part flow arrangement in system, be then connected with part flow arrangement) it is connected.4th end of cross valve 104 is another with check valve 109 respectively
End is connected with one end of check valve 110, the other end of check valve 110 respectively with the other end and low pressure valve 112 of check valve 111
One end is connected, and the other end of low pressure valve 112 is connected with multiple indoor sets (if there is part flow arrangement in system, with part flow arrangement
It is connected).
When 100 refrigerating operaton of off-premises station, from the high pressure gaseous coolant that compressor 102 is discharged, Jing oil eliminators 103
Afterwards, entered in outdoor heat exchanger 106 by cross valve 104 and check valve 105 and condensed, condensed 107 He of coolant Jing check valves
After high pressure valve 113, into multiple indoor sets (or part flow arrangement).It is cold that coolant is converted to low-pressure gaseous after evaporating in machine indoors
Matchmaker, is then return to off-premises station 100, by low pressure valve 112 Jing after check valve 110 and cross valve 104, returns to fluid reservoir 101, then again
Compression is sucked by compressor 102, is so circulated.
When 100 heating operation of off-premises station, from the high pressure gaseous coolant that compressor 102 is discharged, Jing oil eliminators 103
Afterwards, check valve 109 is flow through along pipeline by cross valve 104,113 machine of getting in of Jing high pressure valves is heated, and machine is cold indoors
After solidifying heat release, off-premises station 100 being returned to, off-premises station 100 being entered from low pressure valve 112, outdoor heat exchanger 106 is entered by check valve 111,
Jing after the heat absorption evaporation of outdoor heat exchanger 106, Jing check valves 108 and cross valve 104 return to fluid reservoir 101, then again by compressor
102 suction compressions, so circulate.
As shown in figure 1, the decision method of coolant quantity may include following steps in the multiple on-line system：
S1, after control off-premises station runs the first Preset Time in a chiller mode, obtains pressure at expulsion, the compressor of compressor
Back pressure, the temperature of off-premises station pressure duct, the inlet temperature of fluid reservoir, the suction temperature of compressor and current outdoor ring
Border temperature.
S2, obtains the corresponding saturation temperature of the back pressure of the corresponding saturation temperature of pressure at expulsion and compressor of compressor
Degree.
Specifically, as shown in figure 1, high-pressure pressure sensor can be arranged on the gas exhaust piping of compressor, to detect
The pressure at expulsion (also referred to as system high pressure pressure) of compressor, is obtained corresponding saturation temperature Tc according to the pressure at expulsion of compressor
(i.e. high-pressure saturation temperature)；Low-pressure sensor is set in the return line of compressor, to detect returning for compressor
Atmospheric pressure (also referred to as system low-voltage pressure), is obtained corresponding saturation temperature Te (i.e. low pressure pressure according to the back pressure of compressor
Power saturation temperature)；Temperature temperature-sensitive bag is set on pressure duct residing for high pressure valve, to detect temperature T5 of off-premises station pressure duct
(Guan Wen also referred to as at high pressure valve)；Temperature temperature-sensitive bag is set in the porch of fluid reservoir, to detect inlet temperature T6 of fluid reservoir；
Temperature temperature-sensitive bag is set in being exported in the return line of compressor for fluid reservoir, to detect the suction temperature T7 of compressor；
Temperature temperature-sensitive bag is set in off-premises station, to detect current outdoor ambient temperature T4.
S3, the corresponding saturation temperature of back pressure of the corresponding saturation temperature of pressure at expulsion, compressor according to compressor,
The temperature of off-premises station pressure duct, the inlet temperature of fluid reservoir, the suction temperature of compressor and current outdoor ambient temperature judge
Whether the coolant quantity in multiple on-line system is within normal range.
According to one embodiment of present invention, can judge whether the coolant quantity in multiple on-line system is in the following manner
In normal range：
S1=Tc-Tcs, wherein, pressure at expulsion corresponding saturation temperatures of the Tc for compressor, Tcs are that default target is high
Pressure saturation temperature；
S2=Te-Tes, wherein, back pressure corresponding saturation temperatures of the Te for compressor, Tes are that default target is low
Pressure saturation temperature；
S3=Tc-T5, wherein, temperature of the T5 for off-premises station pressure duct；
S4=(Tc-T5)/(Tc-T4), wherein, T4 is current outdoor ambient temperature；
Wherein, if S1 is more than the first preset value and S2 is more than the second preset value and S3 is more than the 3rd preset value and S4
More than the 4th preset value, then judge that multiple on-line system is in many coolant running statuses.
Further, according to one embodiment of present invention, the coolant in multiple on-line system can be judged in the following manner
Whether amount is within normal range：
S1=Tc-Tcs；
S2=Te-Tes；
S3=Tc-T5；
S4=(Tc-T5)/(Tc-T4)；
S5=T6-Te, wherein, inlet temperatures of the T6 for fluid reservoir；
S6=T7-Te+a, wherein, suction temperatures of the T7 for compressor, a is the 5th preset value, and a can be according to practical situation
Demarcated, such as a can be 1；
Wherein, if S1 is less than the 6th preset value and S2 is less than the 7th preset value and S3 is less than the 8th preset value and S4
Less than the 9th preset value and S5 is more than the tenth preset value and S6 and is more than the 11st preset value, then judge multiple on-line system in lacking
Coolant running status.
It should be noted that in the above-described embodiments, if the S3 ＜ 0 for calculating, S3 are calculated according to 0；If Tc-T5 is ＜
0, or Tc-T4 ＜ 0, then S4 calculate according to 0, also, S4 is between 0 to 1；6th the first preset values of preset value ＜, the 7th
The second preset values of preset value ＜, the 3rd preset values of the 8th preset value ＜, the 4th preset values of the 9th preset value ＜.
Specifically, after the completion of project installation, when system is put into operation for the first time, the coolant quantity of system can be examined
It is disconnected, the pressure at expulsion of compressor now, after control system runs a period of time in a chiller mode, is obtained, to obtain pressure at expulsion
Corresponding saturation temperature Tc, and the back pressure of compressor is obtained, to obtain corresponding saturation temperature Te of back pressure, and obtain
Take temperature T5, inlet temperature T6 of fluid reservoir, the suction temperature T7 of compressor and the current outdoor environment of off-premises station pressure duct
Temperature T4, then, according to Tc, Te, T5, T6, T7 and T4, calculates S1, S2, S3, S4, S5 and S6, and root by the way
Judge the coolant quantity of multiple on-line system whether within normal range according to S1, S2, S3, S4, S5 and S6 for calculating.Wherein, if
S1 ＞ the first preset value a1 and S2 ＞ the second preset value a2 and the 3rd preset value a3 of S3 ＞ and the 4th preset value a4 of S4 ＞, then
Coolant quantity in explanation system is excessive, and now system is in many coolant states；If the 6th preset value a6 of S1 ＜ and S2 ＜ the 7th
Preset value a7 and the 9th preset value a9 of the 8th preset value a8, S4 ＜ of S3 ＜ and the tenth preset value a10 of S5 ＞ and S6 ＞ the 11st
Preset value a11, then the coolant quantity in explanation system is very few, and now system is in few coolant state；Otherwise, illustrate the coolant of system
Amount is within normal range.
In addition, when Maintenance and Repair are carried out to system, can also be using aforesaid way to system during malfunction elimination
Coolant quantity diagnosed, to determine impact of the coolant quantity to failure, help maintainer locking faster and analyze reason, keep away
Exempt from that system coolant quantity is excessive or very few reliability and comfortableness to system is impacted.
Further, according to one embodiment of present invention, when control off-premises station runs first in a chiller mode and presets
Between after, also include：Machine start capacity in obtaining, and the most short fortune being in obtaining multiple indoor sets in the indoor set of open state
The row time；In judging, whether machine start capacity is more than the first preset capacity, and judges whether The shortest operation time is pre- more than second
If the time；If interior machine start capacity is more than the first preset capacity and The shortest operation time is more than the second Preset Time, then sentences
Whether the coolant quantity in disconnected multiple on-line system is within normal range.Wherein, the first preset capacity and the second Preset Time can roots
Demarcated according to practical situation, for example, the first preset capacity can be 70%～150%, and the second Preset Time is pre- less than first
If the time.
Specifically, when needing to judge that the coolant quantity of multiple on-line system is whether within normal range, first can control be
System after operation a period of time, obtains interior machine start capacity (interior machine start capacity=indoor set start number/outdoor in a chiller mode
Machine number), and whether machine start capacity is more than the first preset capacity (such as 110%) in judging, if interior machine start capacity is more than
First preset capacity, and in the indoor set of start operation, the The shortest operation time of indoor set is more than the second Preset Time, then
Relevant parameter Tc, Te, T5, T6, T7 and T4 of off-premises station are obtained, then according to Tc, Te, T5, T6, T7 and T4, by above-mentioned side
Formula calculates S1, S2, S3, S4, S5 and S6, and the coolant of multiple on-line system is judged according to S1, S2, S3, S4, S5 and the S6 for calculating
Whether amount is in normal range, further to improve the accuracy of judgement.
In sum, in multiple on-line system according to embodiments of the present invention coolant quantity decision method, control off-premises station
After running the first Preset Time in a chiller mode, the pressure at expulsion of acquisition compressor, the back pressure of compressor, off-premises station high pressure
The temperature of pipeline, the inlet temperature of fluid reservoir, the suction temperature of compressor and current outdoor ambient temperature, then, according to compression
The corresponding saturation temperature of pressure at expulsion of machine, the corresponding saturation temperature of back pressure of compressor, the temperature of off-premises station pressure duct
Degree, the inlet temperature of fluid reservoir, the suction temperature of compressor and current outdoor ambient temperature judge the coolant in multiple on-line system
Whether amount is within normal range.So as to by the judgement to coolant quantity is realized according to the relevant parameter of off-premises station, it is to avoid coolant
Excessive or very few reliability and comfortableness to system is impacted.
The multiple on-line system of the embodiment of the present invention is described in detail below.
Fig. 2 is the structural representation of multiple on-line system according to an embodiment of the invention.As shown in Fig. 2 the multi-connected machine
System may include off-premises station 100, multiple indoor sets (not specifically illustrated in figure) and control module (not specifically illustrated in figure).
Wherein, off-premises station 100 may include fluid reservoir 101 and compressor 102, outlet and the compressor 102 of fluid reservoir 101
Gas returning port is connected.Control module for control off-premises station 100 run the first Preset Time in a chiller mode after, obtain compressor
102 pressure at expulsion, the back pressure of compressor 102, the temperature of 100 pressure duct of off-premises station, the entrance temperature of fluid reservoir 101
Degree, the suction temperature of compressor 102 and current outdoor ambient temperature, and obtain the corresponding saturation of the pressure at expulsion of compressor 102
The corresponding saturation temperature of back pressure of temperature and compressor 102, and according to the corresponding saturation of pressure at expulsion of compressor 102
Temperature, the corresponding saturation temperature of back pressure of compressor 102, the temperature of 100 pressure duct of off-premises station, fluid reservoir 101 enter
Mouth temperature, the suction temperature of compressor 102 and current outdoor ambient temperature judge whether the coolant quantity in multiple on-line system is in
In normal range.
According to one embodiment of present invention, control module can judge the coolant quantity in multiple on-line system in the following manner
Whether within normal range：
S1=Tc-Tcs, wherein, pressure at expulsion corresponding saturation temperatures of the Tc for compressor, Tcs are that default target is high
Pressure saturation temperature；
S2=Te-Tes, wherein, back pressure corresponding saturation temperatures of the Te for compressor, Tes are that default target is low
Pressure saturation temperature；
S3=Tc-T5, wherein, temperature of the T5 for off-premises station pressure duct；
S4=(Tc-T5)/(Tc-T4), wherein, T4 is current outdoor ambient temperature；
Wherein, if S1 is more than the first preset value and S2 is more than the second preset value and S3 is more than the 3rd preset value and S4
More than the 4th preset value, control module then judges that multiple on-line system is in many coolant running statuses.
Further, according to one embodiment of present invention, control module can judge multiple on-line system in the following manner
In coolant quantity whether within normal range：
S1=Tc-Tcs；
S2=Te-Tes；
S3=Tc-T5；
S4=(Tc-T5)/(Tc-T4)；
S5=T6-Te, wherein, inlet temperatures of the T6 for fluid reservoir；
S6=T7-Te+a, wherein, suction temperatures of the T7 for compressor, a are the 5th preset value, and such as a can be 1；
Wherein, if S1 is less than the 6th preset value and S2 is less than the 7th preset value and S3 is less than the 8th preset value and S4
Less than the 9th preset value and S5 is more than the tenth preset value and S6 and is more than the 11st preset value, control module then judges multi-connected machine system
System is in few coolant running status.
It should be noted that in the above-described embodiments, if the S3 ＜ 0 for calculating, S3 are calculated according to 0；If Tc-T5 is ＜
0, or Tc-T4 ＜ 0, then S4 calculate according to 0, also, S4 is between 0 to 1；6th the first preset values of preset value ＜, the 7th
The second preset values of preset value ＜, the 3rd preset values of the 8th preset value ＜, the 4th preset values of the 9th preset value ＜.
Specifically, as shown in Fig. 2 after the completion of project installation, when system is put into operation for the first time, can be to the cold of system
Matchmaker's amount is diagnosed.Now, can first control system run a period of time in a chiller mode, then, by being arranged on compressor 102
Gas exhaust piping on high-pressure pressure sensor HP detect compressor 102 pressure at expulsion (also referred to as system high pressure pressure), to obtain
Obtain corresponding saturation temperature Tc of pressure at expulsion (i.e. high-pressure saturation temperature) of compressor 102；By being arranged on compressor 102
Return line on low-pressure sensor LP detect compressor back pressure (also referred to as system low-voltage pressure), to be pressed
Corresponding saturation temperature Te of back pressure (i.e. low pressure saturation temperature) of contracting machine 102；By being arranged on residing for high pressure valve 113
Temperature temperature-sensitive bag 120 on pressure duct detects the temperature T5 (pipe also referred to as at high pressure valve 113 of 100 pressure duct of off-premises station
Temperature)；Inlet temperature T6 of fluid reservoir 101 is detected by being arranged on the temperature temperature-sensitive bag 121 of the porch of fluid reservoir 101；Pass through
The temperature temperature-sensitive bag 122 being exported in the return line of compressor 102 for being arranged on fluid reservoir 101 detects returning for compressor 102
Temperature degree T7；Current outdoor ambient temperature T4 is detected by the temperature temperature-sensitive bag 123 being disposed in the outdoor in machine 100.
Then, control module calculates S1, S2, S3, S4, S5 by the way according to Tc, Te, T5, T6, T7 and T4
And S6, and judge the coolant quantity of multiple on-line system whether within normal range according to S1, S2, S3, S4, S5 and the S6 for calculating.
Wherein, if S1 ＞ the first preset value a1 and S2 ＞ the second preset value a2 and the 3rd preset value a3 of S3 ＞ and S4 ＞ the 4th are pre-
If value a4, then coolant quantity in explanation system is excessive, and now control module judges that system is in many coolant states；If S1 ＜
Six preset value a6 and the 7th preset value a7 of S2 ＜ and the 9th preset value a9 of the 8th preset value a8, S4 ＜ of S3 ＜ and S5 ＞ the tenth
Preset value a10 and the 11st preset value a11 of S6 ＞, then the coolant quantity in explanation system is very few, and now control module judges system
In few coolant state；Otherwise, illustrate the coolant quantity of system within normal range.
In addition, when Maintenance and Repair are carried out to system, can also be using aforesaid way to system during malfunction elimination
Coolant quantity diagnosed, to determine impact of the coolant quantity to failure, help maintainer locking faster and analyze reason, keep away
Exempt from that system coolant quantity is excessive or very few reliability and comfortableness to system is impacted.
Further, according to one embodiment of present invention, control module is additionally operable in control off-premises station 100 with the mould that freezes
After formula runs the first Preset Time, interior machine start capacity is obtained, and in obtaining multiple indoor sets, is in the indoor set of open state
In The shortest operation time, and whether machine start capacity is more than the first preset capacity in judging, and judges The shortest operation time
Whether the second Preset Time is more than, wherein, if interior machine start capacity is more than the first preset capacity and The shortest operation time is more than
Second Preset Time, control module then judge whether the coolant quantity in multiple on-line system is in normal range again.Wherein, first
Preset capacity can be 70%～150%, and the second Preset Time is less than the first Preset Time.
Specifically, whether when needing to judge the coolant quantity of multiple on-line system within normal range, control module can
After first control system runs a period of time in a chiller mode, interior machine start capacity (interior machine start capacity=indoor set start is obtained
Number/off-premises station number), and whether machine start capacity is more than the first preset capacity (such as 110%) in judging, if the start of interior machine
Capacity is more than the first preset capacity, and in the indoor set of start operation, the The shortest operation time of indoor set is pre- more than second
If the time, control module then obtains relevant parameter Tc, Te, T5, T6, T7 and T4 of off-premises station, then according to Tc, Te, T5, T6,
T7 and T4, calculates S1, S2, S3, S4, S5 and S6 by the way, and is sentenced according to S1, S2, S3, S4, S5 and the S6 for calculating
Whether the coolant quantity of disconnected multiple on-line system is in normal range, further to improve the accuracy of judgement.
Multiple on-line system according to embodiments of the present invention, it is pre- that control module runs first in a chiller mode in control off-premises station
If after the time, obtaining the pressure at expulsion of compressor, the back pressure of compressor, the temperature of off-premises station pressure duct, fluid reservoir
Inlet temperature, the suction temperature of compressor and current outdoor ambient temperature, it is then, corresponding full according to the pressure at expulsion of compressor
With the back pressure of temperature, compressor corresponding saturation temperature, the temperature of off-premises station pressure duct, the inlet temperature of fluid reservoir,
The suction temperature and current outdoor ambient temperature of compressor judges whether the coolant quantity in multiple on-line system is in normal range.
So as to by realizing judgement to coolant quantity according to the relevant parameter of off-premises station, it is to avoid coolant is excessive or the very few reliability to system
Property and comfortableness are impacted.
In describing the invention, it is to be understood that term " " center ", " longitudinal direction ", " horizontal ", " 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, rather than indicates or imply that the device or element of indication must
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 at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or it is integral；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 the interaction relationship of two elements, unless otherwise clearly restriction.For one of ordinary skill in the art
For, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
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 is 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
Example ", or the description of " some examples " etc. mean specific features with reference to the embodiment or example description, structure, material or spy
Point is contained at least one embodiment or example of the present invention.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 one or more embodiments or example in an appropriate manner.Additionally, in the case of not conflicting, the skill of this area
The feature of the different embodiments or example described in this specification and different embodiments or example can be tied by art personnel
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 (8)
1. in a kind of multiple on-line system coolant quantity decision method, it is characterised in that the multiple on-line system include off-premises station and
Multiple indoor sets, the off-premises station include fluid reservoir and compressor, the gas returning port of the outlet of the fluid reservoir and the compressor
It is connected, the method comprising the steps of：
Control after the off-premises station runs the first Preset Time in a chiller mode, obtain the pressure at expulsion of the compressor, described
The back pressure of compressor, the temperature of the off-premises station pressure duct, the inlet temperature of the fluid reservoir, the compressor return
Temperature degree and current outdoor ambient temperature；
Obtain the corresponding saturation temperature of the back pressure of the corresponding saturation temperature of pressure at expulsion and the compressor of the compressor
Degree；
The corresponding saturation temperature of back pressure of the corresponding saturation temperature of pressure at expulsion, the compressor according to the compressor
Degree, the temperature of the off-premises station pressure duct, the inlet temperature of the fluid reservoir, the suction temperature of the compressor and it is described work as
Front outdoor environment temperature judges whether the coolant quantity in the multiple on-line system is in normal range.
2. in multiple on-line system as claimed in claim 1 coolant quantity decision method, it is characterised in that sentence in the following manner
Whether the coolant quantity in the multiple on-line system of breaking is within normal range：
S1=Tc-Tcs, wherein, Tc is the corresponding saturation temperature of pressure at expulsion of the compressor, and Tcs is that default target is high
Pressure saturation temperature；
S2=Te-Tes, wherein, Te is the corresponding saturation temperature of back pressure of the compressor, and Tes is that default target is low
Pressure saturation temperature；
S3=Tc-T5, wherein, T5 is the temperature of the off-premises station pressure duct；
S4=(Tc-T5)/(Tc-T4), wherein, T4 is the current outdoor ambient temperature；
Wherein, if S1 is more than the first preset value and S2 is more than the second preset value and S3 is more than the 3rd preset value and S4 is more than
4th preset value, then judge that the multiple on-line system is in many coolant running statuses.
3. in multiple on-line system as claimed in claim 1 coolant quantity decision method, it is characterised in that sentence in the following manner
Whether the coolant quantity in the multiple on-line system of breaking is within normal range：
S1=Tc-Tcs, wherein, Tc is the corresponding saturation temperature of pressure at expulsion of the compressor, and Tcs is that default target is high
Pressure saturation temperature；
S2=Te-Tes, wherein, Te is the corresponding saturation temperature of back pressure of the compressor, and Tes is that default target is low
Pressure saturation temperature；
S3=Tc-T5, wherein, T5 is the temperature of the off-premises station pressure duct；
S4=(Tc-T5)/(Tc-T4), wherein, T4 is the current outdoor ambient temperature；
S5=T6-Te, wherein, T6 is the inlet temperature of the fluid reservoir；
S6=T7-Te+a, wherein, T7 is the suction temperature of the compressor, and a is the 5th preset value；
Wherein, if S1 is less than the 6th preset value and S2 is less than the 7th preset value and S3 is less than the 8th preset value and S4 is less than
9th preset value and S5 are more than the tenth preset value and S6 is more than the 11st preset value, then judge the multiple on-line system in few
Coolant running status.
4. in the multiple on-line system as any one of claim 1-3 coolant quantity decision method, it is characterised in that control
Make after the off-premises station runs the first Preset Time in a chiller mode, also include：
Machine start capacity in obtaining, and when being in the most short operation in the indoor set of open state in obtaining the plurality of indoor set
Between；
Whether the interior machine start capacity is judged more than the first preset capacity, and judge the The shortest operation time whether more than the
Two Preset Times；
If the interior machine start capacity is more than first preset capacity and the The shortest operation time is pre- more than described second
If the time, then judge whether the coolant quantity in the multiple on-line system is in normal range again.
5. a kind of multiple on-line system, it is characterised in that include：
Off-premises station, the off-premises station include fluid reservoir and compressor, the gas returning port of the outlet of the fluid reservoir and the compressor
It is connected；
Multiple indoor sets；
Control module, the control module is for controlling after the off-premises station runs the first Preset Time in a chiller mode, to obtain
Take the pressure at expulsion of the compressor, the back pressure of the compressor, the temperature of the off-premises station pressure duct, the liquid storage
The inlet temperature of tank, the suction temperature of the compressor and current outdoor ambient temperature, and obtain the exhaust pressure of the compressor
The corresponding saturation temperature of back pressure of the corresponding saturation temperature of power and the compressor, and according to the aerofluxuss of the compressor
The corresponding saturation temperature of pressure, the corresponding saturation temperature of back pressure of the compressor, the temperature of the off-premises station pressure duct
Degree, the inlet temperature of the fluid reservoir, the suction temperature of the compressor and the current outdoor ambient temperature judge described many
Whether the coolant quantity in on-line system is within normal range.
6. in multiple on-line system as claimed in claim 5 coolant quantity decision maker, it is characterised in that the control module lead to
Cross in the following manner and judge whether the coolant quantity in the multiple on-line system is in normal range：
S1=Tc-Tcs, wherein, Tc is the corresponding saturation temperature of pressure at expulsion of the compressor, and Tcs is that default target is high
Pressure saturation temperature；
S2=Te-Tes, wherein, Te is the corresponding saturation temperature of back pressure of the compressor, and Tes is that default target is low
Pressure saturation temperature；
S3=Tc-T5, wherein, T5 is the temperature of the off-premises station pressure duct；
S4=(Tc-T5)/(Tc-T4), wherein, T4 is the current outdoor ambient temperature；
Wherein, if S1 is more than the first preset value and S2 is more than the second preset value and S3 is more than the 3rd preset value and S4 is more than
4th preset value, the control module then judge that the multiple on-line system is in many coolant running statuses.
7. in multiple on-line system as claimed in claim 5 coolant quantity decision maker, it is characterised in that the control module lead to
Cross in the following manner and judge whether the coolant quantity in the multiple on-line system is in normal range：
S1=Tc-Tcs, wherein, Tc is the corresponding saturation temperature of pressure at expulsion of the compressor, and Tcs is that default target is high
Pressure saturation temperature；
S2=Te-Tes, wherein, Te is the corresponding saturation temperature of back pressure of the compressor, and Tes is that default target is low
Pressure saturation temperature；
S3=Tc-T5, wherein, T5 is the temperature of the off-premises station pressure duct；
S4=(Tc-T5)/(Tc-T4), wherein, T4 is the current outdoor ambient temperature；
S5=T6-Te, wherein, T6 is the inlet temperature of the fluid reservoir；
S6=T7-Te+a, wherein, T7 is the suction temperature of the compressor, and a is the 5th preset value；
Wherein, if S1 is less than the 6th preset value and S2 is less than the 7th preset value and S3 is less than the 8th preset value and S4 is less than
9th preset value and S5 are more than the tenth preset value and S6 is more than the 11st preset value, and the control module then judges described multi-joint
Machine system is in few coolant running status.
8. in the multiple on-line system as any one of claim 5-7 coolant quantity decision maker, it is characterised in that it is described
Control module is additionally operable to after the control off-premises station runs the first Preset Time in a chiller mode, obtains interior machine start capacity,
And the The shortest operation time being in obtaining the plurality of indoor set in the indoor set of open state, and judge that the interior machine is opened
Whether machine capacity is more than the first preset capacity, and whether judges the The shortest operation time more than the second Preset Time, wherein,
If the interior machine start capacity is more than first preset capacity and the The shortest operation time is pre- more than described second
If the time, the control module then judges whether the coolant quantity in the multiple on-line system is in normal range again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611079140.8A CN106545973B (en) | 2016-11-29 | 2016-11-29 | Multi-line system and its coolant quantity determination method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611079140.8A CN106545973B (en) | 2016-11-29 | 2016-11-29 | Multi-line system and its coolant quantity determination method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106545973A true CN106545973A (en) | 2017-03-29 |
| CN106545973B CN106545973B (en) | 2019-07-26 |
Family
ID=58396905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611079140.8A Active CN106545973B (en) | 2016-11-29 | 2016-11-29 | Multi-line system and its coolant quantity determination method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106545973B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931604A (en) * | 2017-03-30 | 2017-07-07 | 四川长虹电器股份有限公司 | The anti-refrigerant of VRF air conditioning piles up processing method |
| CN107560089A (en) * | 2017-09-20 | 2018-01-09 | 合肥美的暖通设备有限公司 | The diagnostic method and diagnostic device of multiple on-line system and its coolant quantity |
| CN107906672A (en) * | 2017-10-31 | 2018-04-13 | 广东美的暖通设备有限公司 | Coolant quantity determination methods and system |
| CN107975988A (en) * | 2017-11-13 | 2018-05-01 | 广东美的暖通设备有限公司 | Coolant injection quantity measuring method, device and heat pump type air conditioning system |
| CN109282425A (en) * | 2018-09-29 | 2019-01-29 | 珠海格力电器股份有限公司 | Air conditioning system and self-detection method for pressure abnormity thereof |
| CN109455057A (en) * | 2018-10-22 | 2019-03-12 | 珠海格力电器股份有限公司 | Air conditioner control method and device, storage medium and air conditioner |
| CN109556226A (en) * | 2018-11-01 | 2019-04-02 | 珠海格力电器股份有限公司 | Method, device and unit for determining content of refrigerant |
| CN109883011A (en) * | 2018-12-24 | 2019-06-14 | 珠海格力电器股份有限公司 | Refrigerant adjusting method and device and air conditioning system |
| CN111306851A (en) * | 2019-12-05 | 2020-06-19 | 宁波奥克斯电气股份有限公司 | Refrigerant storage tank, multi-split air conditioner and refrigerant control method |
| CN112710068A (en) * | 2020-12-29 | 2021-04-27 | 四川长虹空调有限公司 | Method and device for controlling rotating speed of outdoor motor during air conditioner refrigeration and storage medium |
| CN112856716A (en) * | 2021-01-15 | 2021-05-28 | 广东美的暖通设备有限公司 | Air conditioning system and refrigerant state detection method and device thereof |
| CN115523604A (en) * | 2022-10-11 | 2022-12-27 | 宁波奥克斯电气股份有限公司 | Multi-split-unit fault detection method and device and multi-split-unit |
| CN115523604B (en) * | 2022-10-11 | 2024-07-30 | 宁波奥克斯电气股份有限公司 | Multi-split air conditioner fault detection method, detection device and multi-split air conditioner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009281645A (en) * | 2008-05-21 | 2009-12-03 | Sanyo Electric Co Ltd | Air conditioner and control method for air conditioner |
| CN202769873U (en) * | 2012-07-04 | 2013-03-06 | 海尔集团公司 | System used to judge lack of air conditioner refrigerant |
| CN103293010A (en) * | 2012-02-27 | 2013-09-11 | 珠海格力电器股份有限公司 | Air conditioner refrigerant detection method, device and system |
| CN105485992A (en) * | 2016-01-06 | 2016-04-13 | 广东美的暖通设备有限公司 | Air conditioning system and refrigerant shortage detecting method thereof |
-
2016
- 2016-11-29 CN CN201611079140.8A patent/CN106545973B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009281645A (en) * | 2008-05-21 | 2009-12-03 | Sanyo Electric Co Ltd | Air conditioner and control method for air conditioner |
| CN103293010A (en) * | 2012-02-27 | 2013-09-11 | 珠海格力电器股份有限公司 | Air conditioner refrigerant detection method, device and system |
| CN202769873U (en) * | 2012-07-04 | 2013-03-06 | 海尔集团公司 | System used to judge lack of air conditioner refrigerant |
| CN105485992A (en) * | 2016-01-06 | 2016-04-13 | 广东美的暖通设备有限公司 | Air conditioning system and refrigerant shortage detecting method thereof |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931604B (en) * | 2017-03-30 | 2019-07-30 | 四川长虹电器股份有限公司 | The anti-refrigerant of VRF air conditioning accumulates processing method |
| CN106931604A (en) * | 2017-03-30 | 2017-07-07 | 四川长虹电器股份有限公司 | The anti-refrigerant of VRF air conditioning piles up processing method |
| CN107560089B (en) * | 2017-09-20 | 2020-09-04 | 合肥美的暖通设备有限公司 | Multi-split air conditioning system and method and device for diagnosing refrigerant quantity of multi-split air conditioning system |
| CN107560089A (en) * | 2017-09-20 | 2018-01-09 | 合肥美的暖通设备有限公司 | The diagnostic method and diagnostic device of multiple on-line system and its coolant quantity |
| CN107906672A (en) * | 2017-10-31 | 2018-04-13 | 广东美的暖通设备有限公司 | Coolant quantity determination methods and system |
| CN107906672B (en) * | 2017-10-31 | 2020-03-10 | 广东美的暖通设备有限公司 | Refrigerant quantity judging method and system |
| CN107975988A (en) * | 2017-11-13 | 2018-05-01 | 广东美的暖通设备有限公司 | Coolant injection quantity measuring method, device and heat pump type air conditioning system |
| CN109282425A (en) * | 2018-09-29 | 2019-01-29 | 珠海格力电器股份有限公司 | Air conditioning system and self-detection method for pressure abnormity thereof |
| CN109455057A (en) * | 2018-10-22 | 2019-03-12 | 珠海格力电器股份有限公司 | Air conditioner control method and device, storage medium and air conditioner |
| CN109556226A (en) * | 2018-11-01 | 2019-04-02 | 珠海格力电器股份有限公司 | Method, device and unit for determining content of refrigerant |
| CN109556226B (en) * | 2018-11-01 | 2020-01-03 | 珠海格力电器股份有限公司 | Method, device and unit for determining content of refrigerant |
| CN109883011A (en) * | 2018-12-24 | 2019-06-14 | 珠海格力电器股份有限公司 | Refrigerant adjusting method and device and air conditioning system |
| CN111306851A (en) * | 2019-12-05 | 2020-06-19 | 宁波奥克斯电气股份有限公司 | Refrigerant storage tank, multi-split air conditioner and refrigerant control method |
| CN112710068A (en) * | 2020-12-29 | 2021-04-27 | 四川长虹空调有限公司 | Method and device for controlling rotating speed of outdoor motor during air conditioner refrigeration and storage medium |
| CN112710068B (en) * | 2020-12-29 | 2022-03-08 | 四川长虹空调有限公司 | Method and device for controlling rotating speed of outdoor motor during air conditioner refrigeration and storage medium |
| CN112856716A (en) * | 2021-01-15 | 2021-05-28 | 广东美的暖通设备有限公司 | Air conditioning system and refrigerant state detection method and device thereof |
| CN112856716B (en) * | 2021-01-15 | 2022-05-17 | 广东美的暖通设备有限公司 | Air conditioning system and refrigerant state detection method and device thereof |
| CN115523604A (en) * | 2022-10-11 | 2022-12-27 | 宁波奥克斯电气股份有限公司 | Multi-split-unit fault detection method and device and multi-split-unit |
| CN115523604B (en) * | 2022-10-11 | 2024-07-30 | 宁波奥克斯电气股份有限公司 | Multi-split air conditioner fault detection method, detection device and multi-split air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106545973B (en) | 2019-07-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106545973A (en) | Multiple on-line system and its coolant quantity decision method | |
| CN106765894A (en) | Multiple on-line system and its coolant quantity decision method | |
| CN105066539B (en) | Multi-line system and its control method for electronic expansion valve | |
| CN103982951B (en) | Multi-gang air-conditioner off-premises station and control method thereof | |
| CN103398520B (en) | The liquid-level detecting method of air-conditioning system and gas-liquid separator thereof | |
| CN105485992B (en) | Air-conditioning system and its deficient refrigerant detection method | |
| CN105698284B (en) | Air-conditioning system and its refrigeration control method and device | |
| CN105627612B (en) | The refrigeration control method of outdoor unit refrigerant pipe-line system, air conditioner and air conditioner | |
| CN106524557A (en) | Multi-couple unit system and anti-liquid-return control method during defrosting of multi-couple unit system | |
| CN108139086A (en) | Air-conditioning and the method for controlling air-conditioning | |
| AU2020290866B2 (en) | Refrigerant cycle apparatus | |
| CN106403429B (en) | The liquid impact prevention control method and control device and air-conditioning system of air-conditioning system | |
| CN104819547A (en) | Fluorine-lacking detection and protection method and system during startup of variable frequency air conditioning system | |
| CN103673398B (en) | Compressor oil return system and oil return state detection method of compressor | |
| CN106123205A (en) | Moveable air conditioner and coolant leakage detection method thereof | |
| CN109916106A (en) | A kind of heat pump air conditioner unit that can control lubricating oil temperature and its control method | |
| CN107228507A (en) | Compressor oil-control system, oil control method and the air conditioner with the system | |
| CN109073306A (en) | Refrigerating circulatory device | |
| CN106322680A (en) | Air conditioner alarm device and method | |
| CN108291757A (en) | The by-passing valve leak judgement control method of refrigerating circulatory device and refrigerating circulatory device | |
| CN106461281B (en) | Cooling system | |
| CN106895607A (en) | A kind of air-conditioning, automatic oil-return device and method | |
| CN102954638B (en) | Refrigeration system and the method for operation refrigeration system | |
| CN114484911A (en) | Refrigerating system and double-layer one-to-two high-low temperature test box comprising same | |
| CN104896675B (en) | The return-air degree of superheat method of testing and multiple on-line system of multiple on-line system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |