CN106322680A - Alarm device and method for air conditioner - Google Patents
Alarm device and method for air conditioner Download PDFInfo
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- CN106322680A CN106322680A CN201610808138.3A CN201610808138A CN106322680A CN 106322680 A CN106322680 A CN 106322680A CN 201610808138 A CN201610808138 A CN 201610808138A CN 106322680 A CN106322680 A CN 106322680A
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- operational factor
- setting
- coolant
- interior machine
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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
-
- 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
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
- F24F11/58—Remote control using Internet communication
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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
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The embodiment of the invention discloses an alarm device and method for an air conditioner, and belongs to the technical field of debugging of multi-split engineering. The alarm device comprises a communication unit, a judgment unit and an alarm unit, wherein the communication unit is connected with a communication interface of a unit in an air-conditioning system and used for obtaining operating parameters of the unit; the judgment unit is connected with the communication unit and used for judging whether refrigerants in the unit are insufficient or excessive according to the operating parameters; and the alarm unit is connected with the judgment unit and used for giving alarm prompt according to a judgment result. According to the alarm device and method for the air conditioner, an alarm can be given when it is found that the refrigerants are insufficient or excessive in the actual engineering debugging stage.
Description
Technical field
The present embodiments relate to multi-connected machine engineering debugging technique field, particularly relate to a kind of air-conditioning alarm device and side
Method.
Background technology
When the air conditioning system of multi-connected machine is carried out installation and debugging or maintenance and debugging, owing to the air conditioning system of multi-connected machine being managed
Road length and interior machine are different from the installation site of outer machine, need to fill coolant to the air conditioning system of multi-connected machine.Wherein, coolant is
Pervaporation makes the hot a kind of material shifted with condensing within air-conditioning systems.
The amount of filling coolant needs according to the length of pipe of air conditioning system in Practical Project and engineer operation Guide Book meter
Obtain.But, due to different in the mode of Commissioning field filling coolant and the operation level of installation and debugging personnel, often lead to
May there is certain deviation with the calculated amount needing to fill coolant in the amount of actual filling coolant, thus cause air-conditioning system
In system, unit runs in the case of cold medium shortage or coolant excess, and then to the runnability of unit, longevity in air conditioning system
Life etc. adversely affects, and wherein, unit is to machine interior in air conditioning system and the general designation of outer machine.
Summary of the invention
The embodiment of the present invention provides a kind of air-conditioning alarm device and method, to realize debugging the stage at Practical Project, if sending out
Existing cold medium shortage or coolant excess, then start warning.
First aspect, embodiments provides a kind of air-conditioning alarm device, and this device includes:
Communication unit, is connected with the communication interface of unit in air conditioning system, for obtaining the operational factor of described unit；
Judging unit, is connected with described communication unit, for described unit being carried out coolant not according to described operational factor
Foot or the judgement of coolant excess；
Alarm unit, is connected with described judging unit, for carrying out alarm according to judged result.
Further, described judging unit includes cold medium shortage controller, is used for:
When described unit refrigerating operaton is stablized, if subcooler valve opening is more than setting the first aperture in described operational factor
Threshold value, and the average valve opening of interior machine is more than setting the second aperture threshold value, then judge described unit cold medium shortage；Or
When described unit heating operation is stablized, if described operational factor China and foreign countries organic electronic expansion valve opening is more than setting the
Three aperture threshold values, and the described average valve opening of interior machine is less than setting the 4th aperture threshold value, then judge described unit cold medium shortage.
Further, the described average valve opening of interior machine is that the interior organic electronic expansion valve of all starts in described operational factor is opened
The ratio of the interior machine number of degree sum and start.
Further, described judging unit includes that coolant crosses amount controller, is used for:
When described unit refrigerating operaton is stablized, if subcooler valve opening is less than setting the 5th aperture in described operational factor
Threshold value, the described average valve opening of interior machine are less than setting the 6th aperture threshold value and the interior machine average inlet/outlet pipe temperature difference less than setting the first temperature
Difference limen value, then judge described unit coolant excess；Or
When described unit heating operation is stablized, if described operational factor China and foreign countries organic electronic expansion valve opening is less than setting the
Seven aperture threshold values, pipeline high pressure peak divide the inlet pipe temperature difference with pipeline low voltage value less than setting more than setting HVT high voltage threshold and vapour
Fixed second temperature difference threshold, then judge described unit coolant excess.
Further, the described interior machine average inlet/outlet pipe temperature difference is the interior machine inlet/outlet pipe temperature difference sum of all starts and described fortune
The ratio of the interior machine number of start in line parameter, wherein, the described interior machine inlet/outlet pipe temperature difference is that in described operational factor, interior machine goes out pipe
Temperature and interior machine inlet pipe temperature difference.
Further, described air-conditioning alarm device also includes running status diagnosis apparatus, is used for:
Before according to described operational factor described unit carried out the judgement of cold medium shortage or coolant excess, if described fortune
Compressor frequency in line parameter is more than setpoint frequency threshold value, and the compressor continuous working period in described operational factor is more than setting
Surely run unit refrigeration continuous operating time in time threshold, and/or described operational factor and be more than setting time threshold, then described
Unit refrigerating operaton is stable；Or
Before according to described operational factor described unit carried out the judgement of cold medium shortage or coolant excess, if described fortune
Compressor frequency in line parameter is more than setpoint frequency threshold value, and the compressor continuous working period in described operational factor is more than setting
Surely run unit in time threshold, and/or described operational factor and heat continuous operating time more than setting time threshold, then described
Unit heating operation is stable.
Further, described air-conditioning alarm device also includes:
Reset parts, for the compressor continuous working period in judging described operational factor more than setting the operation time
Before threshold value, if there is compressor start, compressor shutdown, interior machine number change, oil return or defrost, the most described compression in described unit
The machine continuous working period resets.
Further, described air-conditioning alarm device also includes:
Computer, is connected with communication unit, in the communication interface by described unit, obtains the operation of described unit
Before parameter, calculate the amount needing to fill coolant, and root according to the difference in height between the length of pipe of air conditioning system and described unit
The amount filling coolant is needed to fill coolant to described unit according to described.
Further, described communication unit includes: wireless communication interface or wired communication interface.
Further, described alarm unit includes:
Display, be used for showing described operational factor and or judged result；
Buzzer, for sending alarm according to judged result.
The operational factor of the embodiment of the present invention unit by obtaining according to communication unit, utilizes judging unit to enter unit
Row cold medium shortage or the judgement of coolant excess, and utilize alarm unit to carry out alarm, to realize debugging rank at Practical Project
Section, if finding cold medium shortage or coolant excess, then starts warning.
Second aspect, the embodiment of the present invention additionally provides a kind of air-conditioning alarm method, and the method includes:
By the communication interface of unit in air conditioning system, obtain the operational factor of described unit；
According to described operational factor, described unit carried out cold medium shortage or the judgement of coolant excess；
Alarm is carried out according to judged result.
Further, the judgement according to described operational factor, described unit being carried out cold medium shortage includes:
When described unit refrigerating operaton is stablized, if subcooler valve opening is more than setting the first aperture in described operational factor
Threshold value, and the average valve opening of interior machine is more than setting the second aperture threshold value, then judge described unit cold medium shortage；Or
When described unit heating operation is stablized, if described operational factor China and foreign countries organic electronic expansion valve opening is more than setting the
Three aperture threshold values, and the described average valve opening of interior machine is less than setting the 4th aperture threshold value, then judge described unit cold medium shortage.
Further, the described average valve opening of interior machine is that the interior organic electronic expansion valve of all starts in described operational factor is opened
The ratio of the interior machine number of degree sum and start.
Further, the judgement according to described operational factor, described unit being carried out coolant excessive includes:
When described unit refrigerating operaton is stablized, if subcooler valve opening is less than setting the 5th aperture in described operational factor
Threshold value, the described average valve opening of interior machine are less than setting the 6th aperture threshold value and the interior machine average inlet/outlet pipe temperature difference less than setting the first temperature
Difference limen value, then judge described unit coolant excess；Or
When described unit heating operation is stablized, if described operational factor China and foreign countries organic electronic expansion valve opening is less than setting the
Seven aperture threshold values, pipeline high pressure peak divide the inlet pipe temperature difference with pipeline low voltage value less than setting more than setting HVT high voltage threshold and vapour
Fixed second temperature difference threshold, then judge described unit coolant excess.
Further, the described interior machine average inlet/outlet pipe temperature difference is the interior machine inlet/outlet pipe temperature difference sum of all starts and described fortune
The ratio of the interior machine number of start in line parameter, wherein, the described interior machine inlet/outlet pipe temperature difference is that in described operational factor, interior machine goes out pipe
Temperature and interior machine inlet pipe temperature difference.
Further, before the judgement that according to described operational factor described unit carried out cold medium shortage or coolant excess,
Also include:
If the compressor frequency in described operational factor is more than setpoint frequency threshold value, the compressor in described operational factor is held
The reforwarding row time freezes continuous operating time more than setting more than setting unit in operation time threshold, and/or described operational factor
Fixing time threshold value, the most described unit refrigerating operaton is stable；Or
If the compressor frequency in described operational factor is more than setpoint frequency threshold value, the compressor in described operational factor is held
The reforwarding row time heats continuous operating time more than setting more than setting unit in operation time threshold, and/or described operational factor
Fixing time threshold value, the most described unit heating operation is stable.
Further, the compressor continuous working period in judging described operational factor runs time threshold more than setting
Before, also include:
If there is compressor start, compressor shutdown, interior machine number change, oil return or defrost in described unit, then by described
The compressor continuous working period resets.
Further, the communication interface of unit in by air conditioning system, before obtaining the operational factor of described unit, also
Including:
Difference in height between length of pipe according to air conditioning system and described unit calculates the amount needing to fill coolant, and according to
The described amount needing filling coolant fills coolant to described unit.
The embodiment of the present invention, by the operational factor according to the unit obtained, carries out cold medium shortage or coolant excess to unit
Judgement, and carry out alarm, to realize debugging the stage at Practical Project, if finding cold medium shortage or coolant excess, then
Start and report to the police.
Accompanying drawing explanation
Fig. 1 is the structural representation of the air conditioning system of multi-connected machine in prior art；
Fig. 2 is the structural representation of a kind of air-conditioning alarm device that the embodiment of the present invention one provides；
Fig. 3 is a kind of air-conditioning alarm device connection diagram with unit of the embodiment of the present invention one offer；
Fig. 4 is the structural representation of the another kind of air-conditioning alarm device that the embodiment of the present invention one provides；
Fig. 5 is the structural representation of a kind of air-conditioning alarm device that the embodiment of the present invention two provides；
Fig. 6 is the flow chart of a kind of air-conditioning alarm method that the embodiment of the present invention three provides；
Fig. 7 is the flow chart of the another kind of air-conditioning alarm method that the embodiment of the present invention three provides；
Fig. 8 is the flow chart of a kind of air-conditioning alarm method that the embodiment of the present invention four provides.
Detailed description of the invention
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just
Part related to the present invention is illustrate only rather than entire infrastructure in description, accompanying drawing.
Embodiment one
The air conditioning system of the multi-connected machine that the air-conditioning alarm device provided to clearly introduce the present embodiment is suitable for, based on
The structural representation of the air conditioning system of the multi-connected machine shown in Fig. 1, introduces its work process as follows:
From figure 1 it appears that the air conditioning system of this multi-connected machine includes an outer machine 02 and two interior machines 03.If receiving
Refrigeration instruction, the cross valve 022 in outer machine 02 turns on as shown in the figure.The gas compression of low-temp low-pressure is become high temperature by compressor 021
The gas of high pressure, and through the filtration of oil eliminator, so that the oil component discharged in company with gas is filtered and is recycled to compressor
021.Then, the gas of High Temperature High Pressure flows into outside heat exchangers 023 by cross valve 022, and through outside heat exchangers 023
Condensation generate middle temperature high pressure liquid.Subsequently, the liquid of middle temperature high pressure is through the filtration of filter 024 and subcooler 026
Cooling, in flowing in machine 03.Wherein, do not work at process of refrigerastion China and foreign countries organic electronic expansion valve 025.The liquid stream of central temperature high pressure
After entering interior machine 03, first pass around the throttling of interior organic electronic expansion valve 031, cooling and blood pressure lowering and process, then heat exchange inside inflow
Device 033 is evaporated making to be become gas from liquid heat absorption, to reach the effect of refrigeration.Finally, gas is from inner side heat exchanger 033
Discharge, enter in compressor 021 through cross valve 022 and gas-liquid separator 029, thus realize circularly cooling process.Heated
Journey is the inverse process of process of refrigerastion, and here is omitted.Wherein, subcooler electric expansion valve 027 is for high to the middle temperature flowed into
Press liquid throttles；Vapour divides and divides inlet pipe temperature into temperature-sensitive bag 028 for measuring vapour；Enter pipe temperature-sensitive bag 032 for measuring interior machine
Inlet pipe temperature；Go out pipe temperature-sensitive bag 034 and go out pipe temperature for measuring interior machine.
Fig. 2 is the structural representation of a kind of air-conditioning alarm device that the embodiment of the present invention one provides, and the present embodiment is applicable
When the air conditioning system of multi-connected machine is carried out installation and debugging or maintenance and debugging, fill the feelings of coolant to the air conditioning system of multi-connected machine
Condition.Seeing Fig. 2, the air-conditioning alarm device 01 that the present embodiment provides includes: communication unit 10, judging unit 20 and alarm unit
30。
Wherein, communication unit 10, it is connected with the communication interface of unit in air conditioning system, for obtaining the operation of described unit
Parameter；Judging unit 20, is connected with described communication unit, for described unit being carried out cold medium shortage according to described operational factor
Or the judgement of coolant excess；Alarm unit 30, is connected with described judging unit, for carrying out alarm according to judged result.
It should be noted that unit is multiple interior machines and the general designation of outer machine in air conditioning system；Operational factor is described for reaction
The parameter of unit current operating conditions；Cold medium shortage is that the amount adding coolant is less than the situation needing to fill the amount of coolant；Coolant
Excess is that the amount adding coolant is more than the situation needing to fill the amount of coolant；Coolant is normally that the amount adding coolant adds equal to needs
The situation of the amount of note coolant.It is understood that judged result during can be cold medium shortage, coolant excess and coolant normal extremely
Few one.
Optionally, described communication unit 10 may include that wireless communication interface or wired communication interface.Thus air-conditioning is reported to the police
Device 01 can be connected with unit by wireless communication interface or wired communication interface, to obtain the operational factor of described unit.
Fig. 3 is a kind of air-conditioning alarm device connection diagram with unit of the embodiment of the present invention one offer.Seeing Fig. 3, air-conditioning is reported to the police
Device 01 is connected with the multiple interior machine in unit and an outer machine by wire communication mode or communication, outside obtaining
Machine and the operational factor of multiple interior machine.
Concrete, described alarm unit 30 includes: display and buzzer.
Wherein, display, be used for showing described operational factor and or judged result；Buzzer, for according to judged result
Send alarm.It will be appreciated by persons skilled in the art that in addition to can realizing reporting to the police by buzzer, it is also possible to
Realize reporting to the police by light emitting diode or audible-visual annunciator.This is not limited by the present embodiment.
It is understood that debug the stage at Practical Project, if receiving cold medium shortage or the warning of coolant excess, debugging
Personnel carry out respective handling to coolant, thus protect the properly functioning of unit in positive air conditioning system.And then lifting unit runnability,
Life-span and debugging efficiency, and reduce after-sales service cost.Wherein, if respective handling may is that cold medium shortage, then to air conditioning system
Continuously add coolant until the alarm of cold medium shortage is stopped；If coolant is excessive, then by outside for the coolant in air conditioning system
Discharge, until stopping the alarm of coolant excess.Concrete, the warning to cold medium shortage can be by indirect ring buzzing
Device, it is also possible to pointed out by Light-Emitting Diode display redness；Corresponding, the warning to coolant excess can be by ring continuously
Ring buzzer, it is also possible to being pointed out by Light-Emitting Diode display yellow, this is not defined by the present embodiment.
Fig. 4 is the structural representation of the another kind of air-conditioning alarm device that the embodiment of the present invention one provides.See Fig. 4, in reality
In the application of border, air-conditioning alarm device includes: power pack, for powering to air-conditioning alarm device；Communications portion, is used for and unit
Set up communication, and obtain the operational factor of unit；Interactive portion, for judging whether cold medium shortage or coolant according to operational factor
Excess, and report to the police and show.Wherein, interactive portion can also include: touch screen, is connected with communication unit, is used for passing through
Communication unit sends control instruction to unit, directly to control unit work, it is to avoid use the trouble of air-conditioning remote control.
The technical scheme of the embodiment of the present invention, the operational factor of the unit by obtaining according to communication unit, utilize and judge
Unit carries out cold medium shortage or the judgement of coolant excess to unit, and utilizes alarm unit to carry out alarm.To realize in reality
In the border engineering debugging stage, if finding cold medium shortage or coolant excess, then start warning.
For realizing the accurate judgement to cold medium shortage situation, described judging unit can include cold medium shortage controller, uses
In:
When described unit refrigerating operaton is stablized, if subcooler valve opening is more than setting the first aperture in described operational factor
Threshold value, and the average valve opening of interior machine is more than setting the second aperture threshold value, then judge described unit cold medium shortage；Or
When described unit heating operation is stablized, if described operational factor China and foreign countries organic electronic expansion valve opening is more than setting the
Three aperture threshold values, and the described average valve opening of interior machine is less than setting the 4th aperture threshold value, then judge described unit cold medium shortage.
Wherein, subcooler valve refers to subcooler electric expansion valve.The average valve opening of interior machine is all in described operational factor
The interior organic electronic expansion valve opening sum of start and the ratio of the interior machine number of start.First aperture threshold value, the second aperture threshold value,
The marginal value of each electronic expansion valve opening when 3rd aperture threshold value and the 4th aperture threshold value are cold medium shortage, can be by a large amount of imitative
True experiment obtains.
For realizing the accurate judgement to coolant excess situation, described judging unit can include that coolant crosses amount controller, uses
In:
When described unit refrigerating operaton is stablized, if subcooler valve opening is less than setting the 5th aperture in described operational factor
Threshold value, the described average valve opening of interior machine are less than setting the 6th aperture threshold value and the interior machine average inlet/outlet pipe temperature difference less than setting the first temperature
Difference limen value, then judge described unit coolant excess；Or
When described unit heating operation is stablized, if described operational factor China and foreign countries organic electronic expansion valve opening is less than setting the
Seven aperture threshold values, pipeline high pressure peak divide the inlet pipe temperature difference with pipeline low voltage value less than setting more than setting HVT high voltage threshold and vapour
Fixed second temperature difference threshold, then judge described unit coolant excess.
Wherein, the described interior machine average inlet/outlet pipe temperature difference is the interior machine inlet/outlet pipe temperature difference sum of all starts and described operation ginseng
The ratio of the interior machine number of start in number, further, the described interior machine inlet/outlet pipe temperature difference is that in described operational factor, interior machine goes out pipe
Temperature and interior machine inlet pipe temperature difference.
Concrete, interior machine inlet pipe temperature can be recorded by the pipe temperature-sensitive bag that enters in interior machine；Interior machine goes out pipe temperature can be by interior
The pipe temperature-sensitive bag that goes out in machine records；Vapour divides inlet pipe temperature can be divided by vapour to record into temperature-sensitive bag；Pipeline high pressure peak can be by
Pressure transducer records in the high-pressure side of compressor；Low voltage value can be recorded in the low-pressure side of compressor by pressure transducer.The
Five aperture threshold values, the 6th aperture threshold value, the first temperature difference threshold, the 7th aperture threshold value, HVT high voltage threshold and the second temperature difference threshold are cold
Marginal value during matchmaker's excess, can be obtained by a large amount of emulation experiments, it is also possible to obtained by the experience of those skilled in the art.
Embodiment two
Fig. 5 is the structural representation of a kind of air-conditioning alarm device that the embodiment of the present invention two provides.The present embodiment is upper
A kind of alternative proposed on the basis of stating embodiment.Seeing Fig. 5, the air-conditioning alarm device that the present embodiment provides includes: logical
Letter unit 10, alarm unit 30, cold medium shortage controller 21, coolant cross amount controller 22, running status diagnosis apparatus 23, replacement portion
Part 24 and computer 40.
Wherein, described running status diagnosis apparatus 23 can be arranged in judging unit, with described cold medium shortage controller 21
Cross amount controller 22 with described coolant to connect, it is also possible to be arranged on outside judging unit, be connected with judging unit.Described running status
Diagnosis apparatus 23 is used for:
Before according to described operational factor described unit carried out the judgement of cold medium shortage or coolant excess, if described fortune
Compressor frequency in line parameter is more than setpoint frequency threshold value, and the compressor continuous working period in described operational factor is more than setting
Surely run unit refrigeration continuous operating time in time threshold, and/or described operational factor and be more than setting time threshold, then described
Unit refrigerating operaton is stable；Or
Before according to described operational factor described unit carried out the judgement of cold medium shortage or coolant excess, if described fortune
Compressor frequency in line parameter is more than setpoint frequency threshold value, and the compressor continuous working period in described operational factor is more than setting
Surely run unit in time threshold, and/or described operational factor and heat continuous operating time more than setting time threshold, then described
Unit heating operation is stable.
It should be noted that the frequency values that setpoint frequency threshold value is compressor operating when stablizing；Set and run time threshold
For compressor from start to continuous working period time stable；Set time threshold as unit freeze from starting shooting to stable or
Continuous working period when heating stable.Wherein, setpoint frequency threshold value, setting operation time threshold and setting time threshold are permissible
Obtained by a large amount of emulation experiments, it is also possible to obtained by the experience of those skilled in the art.
Concrete, reset parts 24 and be connected with running status diagnosis apparatus 23, for the pressure in judging described operational factor
The contracting machine continuous working period is run before time threshold more than setting, if compressor start, compressor shutdown, interior occurs in described unit
Machine number change, oil return or defrost, then reset the described compressor continuous working period.So that persistently transported by compressor
The state of unit can be judged by the row time accurately, and then improves the accuracy rate judging cold medium shortage or coolant excess.
By running status diagnosis apparatus and replacement parts, the technical scheme of the embodiment of the present invention, ensure that coolant excess controls
Device and cold medium shortage controller when described unit refrigerating operaton is stablized or when described unit heating operation is stablized to coolant not
The situation of foot or coolant excess judges, thus the accuracy rate that the situation to cold medium shortage or coolant excess that improves judges.
Further, the air-conditioning alarm device that the present embodiment provides can also include: computer 40.
Wherein, computer 40, it is connected with communication unit 10, for the communication interface of unit in by air conditioning system, obtains
Before taking the operational factor of described unit, calculate needs according to the difference in height between the length of pipe of air conditioning system and described unit and add
The amount of note coolant, and need the amount filling coolant to fill coolant to described unit according to described.Engineering in air conditioning system is debugged
In, if the duty of air conditioning system is refrigeration, then carry out coolant charging in high-pressure side；If the duty of air conditioning system is system
Heat, then carry out coolant charging in low-pressure side.
Embodiment three
Fig. 6 is the flow chart of a kind of air-conditioning alarm method that the embodiment of the present invention three provides.The method is applicable to many
When online air conditioning system carries out installation and debugging or maintenance and debugging, fill the situation of coolant to the air conditioning system of multi-connected machine.The party
Method can be performed by the air-conditioning alarm device described in above-described embodiment.See Fig. 6, the air-conditioning alarm method that the present embodiment provides
Including:
S110, by the communication interface of unit in air conditioning system, obtain the operational factor of described unit.
S120, according to described operational factor described unit carried out cold medium shortage or the judgement of coolant excess.
S130, carry out alarm according to judged result.
Fig. 7 is the flow chart of the another kind of air-conditioning alarm method that the embodiment of the present invention three provides.See Fig. 7, to multi-joint
In the Practical Project debugging of the air conditioning system of machine, first set up with the interior machine in the air conditioning system of multi-connected machine and outer machine and communicate, and
Machine and the operational factor of outer machine in obtaining；Then, according to operational factor, cold medium shortage or coolant excess are judged；Finally,
Respective handling is carried out according to judged result.
The technical scheme of the embodiment of the present invention, by the operational factor according to the unit obtained, carries out coolant not to unit
Foot or the judgement of coolant excess, and carry out alarm, to realize debugging the stage at Practical Project, if find cold medium shortage or
Coolant excess, then start warning.
Further, the judgement according to described operational factor, described unit being carried out cold medium shortage may include that
When described unit refrigerating operaton is stablized, if subcooler valve opening is more than setting the first aperture in described operational factor
Threshold value, and the average valve opening of interior machine is more than setting the second aperture threshold value, then judge described unit cold medium shortage；Or
When described unit heating operation is stablized, if described operational factor China and foreign countries organic electronic expansion valve opening is more than setting the
Three aperture threshold values, and the described average valve opening of interior machine is less than setting the 4th aperture threshold value, then judge described unit cold medium shortage.
Further, the described average valve opening of interior machine is that the interior organic electronic expansion valve of all starts in described operational factor is opened
The ratio of the interior machine number of degree sum and start.
Further, the judgement according to described operational factor, described unit being carried out coolant excessive may include that
When described unit refrigerating operaton is stablized, if subcooler valve opening is less than setting the 5th aperture in described operational factor
Threshold value, the described average valve opening of interior machine are less than setting the 6th aperture threshold value and the interior machine average inlet/outlet pipe temperature difference less than setting the first temperature
Difference limen value, then judge described unit coolant excess；Or
When described unit heating operation is stablized, if described operational factor China and foreign countries organic electronic expansion valve opening is less than setting the
Seven aperture threshold values, pipeline high pressure peak divide the inlet pipe temperature difference with pipeline low voltage value less than setting more than setting HVT high voltage threshold and vapour
Fixed second temperature difference threshold, then judge described unit coolant excess.
Further, before the judgement that according to described operational factor described unit carried out cold medium shortage or coolant excess,
Can also include:
If the compressor frequency in described operational factor is more than setpoint frequency threshold value, the compressor in described operational factor is held
The reforwarding row time freezes continuous operating time more than setting more than setting unit in operation time threshold, and/or described operational factor
Fixing time threshold value, the most described unit refrigerating operaton is stable；Or
If the compressor frequency in described operational factor is more than setpoint frequency threshold value, the compressor in described operational factor is held
The reforwarding row time heats continuous operating time more than setting more than setting unit in operation time threshold, and/or described operational factor
Fixing time threshold value, the most described unit heating operation is stable.
Further, the compressor continuous working period in judging described operational factor runs time threshold more than setting
Before, it is also possible to including:
If there is compressor start, compressor shutdown, interior machine number change, oil return or defrost, the most described pressure in described unit
The contracting machine continuous working period resets.
Further, the described interior machine average inlet/outlet pipe temperature difference is the interior machine inlet/outlet pipe temperature difference sum of all starts and described fortune
The ratio of the interior machine number of start in line parameter, wherein, the described interior machine inlet/outlet pipe temperature difference is that in described operational factor, interior machine goes out pipe
Temperature and interior machine inlet pipe temperature difference.
Further, the communication interface of unit in by air conditioning system, before obtaining the operational factor of described unit, also
May include that
Difference in height between length of pipe according to air conditioning system and described unit calculates the amount needing to fill coolant, and according to
The described amount needing filling coolant fills coolant to described unit.
Embodiment four
Fig. 8 is the flow chart of a kind of air-conditioning alarm method that the embodiment of the present invention four provides.The present embodiment is in above-mentioned reality
Execute a kind of alternative that the basis of example three proposes.Seeing Fig. 8, the air-conditioning alarm method that the present embodiment provides includes:
S210, calculate the amount needing to fill coolant, and root according to the difference in height between the length of pipe of air conditioning system and unit
The amount filling coolant is needed to fill coolant to described unit according to described.
S220, communication interface by described unit, obtain the operational factor of described unit.
If compressor start, compressor shutdown, interior machine number change, oil return or defrost occurs in the described unit of S230, then will
The compressor continuous working period in described operational factor resets.
If the compressor frequency in the described operational factor of S240 is more than setpoint frequency threshold value, the pressure in described operational factor
The contracting machine continuous working period runs unit refrigeration continuous operating time in time threshold, and/or described operational factor more than setting
More than setting time threshold, the most described unit refrigerating operaton is stable；Or
If the compressor frequency in described operational factor is more than setpoint frequency threshold value, the compressor in described operational factor is held
The reforwarding row time heats continuous operating time more than setting more than setting unit in operation time threshold, and/or described operational factor
Fixing time threshold value, the most described unit heating operation is stable.
S250, when described unit refrigerating operaton is stablized, if subcooler valve opening is more than setting the in described operational factor
One aperture threshold value, and the average valve opening of interior machine is more than setting the second aperture threshold value, then judge described unit cold medium shortage；If it is described
In operational factor, subcooler valve opening is less than setting the 5th aperture threshold value, the described average valve opening of interior machine less than setting the 6th aperture
Threshold value and the interior machine average inlet/outlet pipe temperature difference less than setting the first temperature difference threshold, then judge described unit coolant excess；Or
When described unit heating operation is stablized, if described operational factor China and foreign countries organic electronic expansion valve opening is more than setting the
Three aperture threshold values, and the described average valve opening of interior machine is less than setting the 4th aperture threshold value, then judge described unit cold medium shortage；If
Described operational factor China and foreign countries organic electronic expansion valve opening is less than setting the 7th aperture threshold value, pipeline high pressure peak more than setting height
Pressure threshold value and vapour divide the inlet pipe temperature difference with pipeline low voltage value less than setting the second temperature difference threshold, then judge described unit coolant mistake
Amount.
Wherein, the described average valve opening of interior machine be all starts in described operational factor interior organic electronic expansion valve opening it
And the ratio of the interior machine number with start.The interior machine average inlet/outlet pipe temperature difference is interior machine inlet/outlet pipe temperature difference sum and the institute of all starts
State the ratio of the interior machine number of start in operational factor.The described interior machine inlet/outlet pipe temperature difference is that in described operational factor, interior machine goes out Guan Wen
Degree and interior machine inlet pipe temperature difference.
S260, carry out alarm according to judged result.
The technical scheme that the embodiment of the present invention provides, by the case of guaranteeing that unit operation is stable, according to obtain
The situation of cold medium shortage or coolant excess is judged by unit operation parameter, and reports to the police according to judged result.Thus it is real
In the Practical Project debugging stage now, if finding cold medium shortage or coolant excess, then start warning.
The said goods can perform the method that any embodiment of the present invention is provided, and possesses the corresponding functional module of execution method
And beneficial effect.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious change,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although by above example, the present invention is carried out
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other Equivalent embodiments more can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (18)
1. an air-conditioning alarm device, it is characterised in that including:
Communication unit, is connected with the communication interface of unit in air conditioning system, for obtaining the operational factor of described unit；
Judging unit, is connected with described communication unit, for according to described operational factor described unit carried out cold medium shortage or
The judgement of coolant excess；
Alarm unit, is connected with described judging unit, for carrying out alarm according to judged result.
Device the most according to claim 1, it is characterised in that described judging unit includes cold medium shortage controller, is used for:
When described unit refrigerating operaton is stablized, if subcooler valve opening is more than setting the first aperture threshold in described operational factor
Value, and the average valve opening of interior machine is more than setting the second aperture threshold value, then judge described unit cold medium shortage；Or
When described unit heating operation is stablized, if described operational factor China and foreign countries organic electronic expansion valve opening is opened more than setting the 3rd
Degree threshold value, and the described average valve opening of interior machine is less than setting the 4th aperture threshold value, then judge described unit cold medium shortage.
Device the most according to claim 2, it is characterised in that the described average valve opening of interior machine is institute in described operational factor
There is the ratio of the interior organic electronic expansion valve opening sum of start and the interior machine number of start.
Device the most according to claim 1, it is characterised in that described judging unit includes that coolant crosses amount controller, is used for:
When described unit refrigerating operaton is stablized, if subcooler valve opening is less than setting the 5th aperture threshold in described operational factor
Value, the described average valve opening of interior machine are less than setting the 6th aperture threshold value and the interior machine average inlet/outlet pipe temperature difference less than setting first temperature difference
Threshold value, then judge described unit coolant excess；Or
When described unit heating operation is stablized, if described operational factor China and foreign countries organic electronic expansion valve opening is opened less than setting the 7th
Degree threshold value, pipeline high pressure peak divide the difference of inlet pipe temperature and pipeline low voltage value less than setting the more than setting HVT high voltage threshold and vapour
Two temperature difference threshold, then judge described unit coolant excess.
Device the most according to claim 4, it is characterised in that the described interior machine average inlet/outlet pipe temperature difference is the interior of all starts
Machine inlet/outlet pipe temperature difference sum and the ratio of the interior machine number of start in described operational factor, wherein, the described interior machine inlet/outlet pipe temperature difference
Pipe temperature and interior machine inlet pipe temperature difference is gone out for machine interior in described operational factor.
Device the most according to claim 1, it is characterised in that also include running status diagnosis apparatus, be used for:
Before according to described operational factor described unit carried out the judgement of cold medium shortage or coolant excess, run ginseng if described
Compressor frequency in number is more than setpoint frequency threshold value, and the compressor continuous working period in described operational factor is more than setting fortune
In row time threshold, and/or described operational factor, unit refrigeration continuous operating time is more than setting time threshold, the most described unit
Refrigerating operaton is stable；Or
Before according to described operational factor described unit carried out the judgement of cold medium shortage or coolant excess, run ginseng if described
Compressor frequency in number is more than setpoint frequency threshold value, and the compressor continuous working period in described operational factor is more than setting fortune
In row time threshold, and/or described operational factor, unit heats continuous operating time more than setting time threshold, the most described unit
Heating operation is stable.
Device the most according to claim 6, it is characterised in that also include:
Reset parts, run time threshold for the compressor continuous working period in judging described operational factor more than setting
Before, if there is compressor start, compressor shutdown, interior machine number change, oil return or defrost in described unit, then by described compressor
Continuous working period resets.
Device the most according to claim 1, it is characterised in that also include:
Computer, is connected with described communication unit, in the communication interface by described unit, obtains the operation of described unit
Before parameter, calculate the amount needing to fill coolant, and root according to the difference in height between the length of pipe of air conditioning system and described unit
The amount filling coolant is needed to fill coolant to described unit according to described.
Device the most according to claim 1, it is characterised in that described communication unit includes: wireless communication interface or wired
Communication interface.
Device the most according to claim 1, it is characterised in that described alarm unit includes:
Display, be used for showing described operational factor and or judged result；
Buzzer, for sending alarm according to judged result.
11. 1 kinds of air-conditioning alarm methods, it is characterised in that including:
By the communication interface of unit in air conditioning system, obtain the operational factor of described unit；
According to described operational factor, described unit carried out cold medium shortage or the judgement of coolant excess；
Alarm is carried out according to judged result.
12. methods according to claim 11, it is characterised in that described unit is carried out coolant according to described operational factor
Not enough judgement includes:
When described unit refrigerating operaton is stablized, if subcooler valve opening is more than setting the first aperture threshold in described operational factor
Value, and the average valve opening of interior machine is more than setting the second aperture threshold value, then judge described unit cold medium shortage；Or
When described unit heating operation is stablized, if described operational factor China and foreign countries organic electronic expansion valve opening is opened more than setting the 3rd
Degree threshold value, and the described average valve opening of interior machine is less than setting the 4th aperture threshold value, then judge described unit cold medium shortage.
13. methods according to claim 12, it is characterised in that the described average valve opening of interior machine is in described operational factor
The interior organic electronic expansion valve opening sum of all starts and the ratio of the interior machine number of start.
14. methods according to claim 11, it is characterised in that described unit is carried out coolant according to described operational factor
The judgement of excess includes:
When described unit refrigerating operaton is stablized, if subcooler valve opening is less than setting the 5th aperture threshold in described operational factor
Value, the described average valve opening of interior machine are less than setting the 6th aperture threshold value and the interior machine average inlet/outlet pipe temperature difference less than setting first temperature difference
Threshold value, then judge described unit coolant excess；Or
When described unit heating operation is stablized, if described operational factor China and foreign countries organic electronic expansion valve opening is opened less than setting the 7th
Degree threshold value, pipeline high pressure peak divide the difference of inlet pipe temperature and pipeline low voltage value less than setting the more than setting HVT high voltage threshold and vapour
Two temperature difference threshold, then judge described unit coolant excess.
15. methods according to claim 14, it is characterised in that the described interior machine average inlet/outlet pipe temperature difference is all starts
Interior machine inlet/outlet pipe temperature difference sum and the ratio of the interior machine number of start in described operational factor, wherein, described interior machine inlet/outlet pipe temperature
Difference goes out pipe temperature and interior machine inlet pipe temperature difference for machine interior in described operational factor.
16. methods according to claim 11, it is characterised in that described unit is being carried out cold according to described operational factor
Matchmaker is not enough or before the judgement of coolant excess, also includes:
If the compressor frequency in described operational factor is more than setpoint frequency threshold value, the compressor in described operational factor is persistently transported
The row time freezes continuous operating time more than when setting more than setting unit in operation time threshold, and/or described operational factor
Between threshold value, the most described unit refrigerating operaton is stable；Or
If the compressor frequency in described operational factor is more than setpoint frequency threshold value, the compressor in described operational factor is persistently transported
The row time heats continuous operating time more than when setting more than setting unit in operation time threshold, and/or described operational factor
Between threshold value, the most described unit heating operation is stable.
17. methods according to claim 16, it is characterised in that the compressor in judging described operational factor is persistently transported
Before the row time is more than setting operation time threshold, also include:
If there is compressor start, compressor shutdown, interior machine number change, oil return or defrost in described unit, then by described compression
The machine continuous working period resets.
18. methods according to claim 11, it is characterised in that the communication interface of unit in by air conditioning system, obtain
Before taking the operational factor of described unit, also include:
Difference in height between length of pipe according to air conditioning system and described unit calculates the amount needing to fill coolant, and according to described
The amount filling coolant is needed to fill coolant to described unit.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576112A (en) * | 2017-09-19 | 2018-01-12 | 青岛海尔空调器有限总公司 | Detection method and device, air-conditioning for refrigerant leakage |
| CN109282420A (en) * | 2018-09-30 | 2019-01-29 | 珠海格力电器股份有限公司 | Amount of refrigerant detection method, device, system and the air-conditioning of temperature control equipment |
| CN109357357A (en) * | 2018-10-10 | 2019-02-19 | 珠海格力电器股份有限公司 | Compressor exhaust temperature detection abnormal diagnostic method, multi-connected machine and storage medium |
| CN111365824A (en) * | 2018-12-26 | 2020-07-03 | 青岛海尔空调电子有限公司 | Air conditioner fluorine deficiency judgment method and control method |
| CN111412636A (en) * | 2020-04-07 | 2020-07-14 | 珠海格力电器股份有限公司 | Air conditioner without communication circuit between indoor unit and outdoor unit and control method thereof |
| CN114279043A (en) * | 2021-12-08 | 2022-04-05 | 珠海格力电器股份有限公司 | Refrigerant shortage processing method and device, multi-split air conditioner and storage medium |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101504177A (en) * | 2008-02-05 | 2009-08-12 | Lg电子株式会社 | Air conditioning apparatus and method for determining the amount of refrigerant of air-conditioning apparatus |
| CN102788403A (en) * | 2012-07-30 | 2012-11-21 | 广东美的电器股份有限公司 | Method for detecting lack of refrigerant in air conditioner, and air conditioner |
| CN103293010A (en) * | 2012-02-27 | 2013-09-11 | 珠海格力电器股份有限公司 | Method and device and system for detecting air conditioner coolants |
| CN104405629A (en) * | 2014-11-21 | 2015-03-11 | 珠海格力电器股份有限公司 | Control method and system of improving running reliability of compressor |
| CN104534752A (en) * | 2015-01-26 | 2015-04-22 | 珠海格力电器股份有限公司 | Refrigerant filling system and method and air-conditioning machine set |
| CN104676855A (en) * | 2015-02-28 | 2015-06-03 | 广东美的制冷设备有限公司 | Variable-frequency air conditioner and coolant leakage detection method thereof |
| CN105091215A (en) * | 2015-07-24 | 2015-11-25 | 珠海格力电器股份有限公司 | Fluorine lack start-up detection method and device for multi-split air-conditioner |
| WO2015193976A1 (en) * | 2014-06-17 | 2015-12-23 | 三菱電機株式会社 | Air-conditioning system |
| CN206281150U (en) * | 2016-09-07 | 2017-06-27 | 珠海格力电器股份有限公司 | A kind of air-conditioning warning device |
-
2016
- 2016-09-07 CN CN201610808138.3A patent/CN106322680B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101504177A (en) * | 2008-02-05 | 2009-08-12 | Lg电子株式会社 | Air conditioning apparatus and method for determining the amount of refrigerant of air-conditioning apparatus |
| CN103293010A (en) * | 2012-02-27 | 2013-09-11 | 珠海格力电器股份有限公司 | Method and device and system for detecting air conditioner coolants |
| CN102788403A (en) * | 2012-07-30 | 2012-11-21 | 广东美的电器股份有限公司 | Method for detecting lack of refrigerant in air conditioner, and air conditioner |
| WO2015193976A1 (en) * | 2014-06-17 | 2015-12-23 | 三菱電機株式会社 | Air-conditioning system |
| CN104405629A (en) * | 2014-11-21 | 2015-03-11 | 珠海格力电器股份有限公司 | Control method and system of improving running reliability of compressor |
| CN104534752A (en) * | 2015-01-26 | 2015-04-22 | 珠海格力电器股份有限公司 | Refrigerant filling system and method and air-conditioning machine set |
| CN104676855A (en) * | 2015-02-28 | 2015-06-03 | 广东美的制冷设备有限公司 | Variable-frequency air conditioner and coolant leakage detection method thereof |
| CN105091215A (en) * | 2015-07-24 | 2015-11-25 | 珠海格力电器股份有限公司 | Fluorine lack start-up detection method and device for multi-split air-conditioner |
| CN206281150U (en) * | 2016-09-07 | 2017-06-27 | 珠海格力电器股份有限公司 | A kind of air-conditioning warning device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576112A (en) * | 2017-09-19 | 2018-01-12 | 青岛海尔空调器有限总公司 | Detection method and device, air-conditioning for refrigerant leakage |
| CN109282420A (en) * | 2018-09-30 | 2019-01-29 | 珠海格力电器股份有限公司 | Amount of refrigerant detection method, device, system and the air-conditioning of temperature control equipment |
| CN109357357A (en) * | 2018-10-10 | 2019-02-19 | 珠海格力电器股份有限公司 | Compressor exhaust temperature detection abnormal diagnostic method, multi-connected machine and storage medium |
| CN111365824A (en) * | 2018-12-26 | 2020-07-03 | 青岛海尔空调电子有限公司 | Air conditioner fluorine deficiency judgment method and control method |
| CN111365824B (en) * | 2018-12-26 | 2021-09-24 | 青岛海尔空调电子有限公司 | Air conditioner fluorine deficiency judgment method and control method |
| CN111412636A (en) * | 2020-04-07 | 2020-07-14 | 珠海格力电器股份有限公司 | Air conditioner without communication circuit between indoor unit and outdoor unit and control method thereof |
| CN111412636B (en) * | 2020-04-07 | 2021-05-25 | 珠海格力电器股份有限公司 | Air conditioner without communication circuit between indoor unit and outdoor unit and control method thereof |
| CN114279043A (en) * | 2021-12-08 | 2022-04-05 | 珠海格力电器股份有限公司 | Refrigerant shortage processing method and device, multi-split air conditioner and storage medium |
| CN114279043B (en) * | 2021-12-08 | 2022-11-25 | 珠海格力电器股份有限公司 | Refrigerant shortage processing method and device, multi-split air conditioner and storage medium |
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|---|---|
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