CN206281150U - A kind of air-conditioning warning device - Google Patents
A kind of air-conditioning warning device Download PDFInfo
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- CN206281150U CN206281150U CN201621042245.1U CN201621042245U CN206281150U CN 206281150 U CN206281150 U CN 206281150U CN 201621042245 U CN201621042245 U CN 201621042245U CN 206281150 U CN206281150 U CN 206281150U
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Abstract
The utility model embodiment discloses a kind of air-conditioning warning device, belongs to multi-connected machine engineering debugging technique field.The device includes：Communication unit, the communication interface with unit in air-conditioning system is connected, the operational factor for obtaining the unit；Judging unit, is connected with the communication unit, for carrying out cold medium shortage or the excessive judgement of refrigerant to the unit according to the operational factor；Alarm unit, is connected with the judging unit, for carrying out alarm according to judged result.A kind of air-conditioning warning device that the utility model embodiment is provided, to realize debugging the stage in Practical Project, if finding cold medium shortage or refrigerant excess, starts alarm.
Description
Technical field
The utility model embodiment is related to multi-connected machine engineering debugging technique field, more particularly to a kind of air-conditioning warning device.
Background technology
When the air-conditioning system to multi-connected machine carries out installation and debugging or maintenance and debugging, due to being managed in the air-conditioning system of multi-connected machine
Road length and interior machine are different from the installation site of outer machine, it is necessary to fill refrigerant to the air-conditioning system of multi-connected machine.Wherein, refrigerant is
Pervaporation makes a kind of material of heat transfer with condensation within air-conditioning systems.
Fill the length of pipe and engineer operation Guide Book meter of the amount needs according to air-conditioning system in Practical Project of refrigerant
Obtain.But, due to different in the mode of Commissioning field filling refrigerant and the operation level of installation and debugging personnel, often lead to
The amount of actual filling refrigerant may be calculated the need for fill the amount of refrigerant and there is certain deviation, so as to cause air-conditioning system
Unit runs in the case of cold medium shortage or refrigerant excess in system, and then to the runnability of unit, longevity in air-conditioning system
Life etc. is adversely affected, wherein, unit is the general designation to interior machine and outer machine in air-conditioning system.
Utility model content
The utility model embodiment provides a kind of air-conditioning warning device, to realize debugging the stage in Practical Project, if finding
Cold medium shortage or refrigerant excess, then start alarm.
In a first aspect, the utility model embodiment provides a kind of air-conditioning warning device, the device includes：
Communication unit, the communication interface with unit in air-conditioning system is connected, the operational factor for obtaining the unit；
Judging unit, is connected with the communication unit, for carrying out refrigerant not to the unit according to the operational factor
Foot or the excessive judgement of refrigerant；
Alarm unit, is connected with the judging unit, for carrying out alarm according to judged result.
Further, the judging unit includes cold medium shortage controller, is used for：
In unit refrigerating operaton stabilization, if subcooler valve opening is more than the first aperture of setting in the operational factor
Threshold value, and the average valve opening of interior machine then judges the unit cold medium shortage more than the second aperture threshold value of setting；Or
In unit heating operation stabilization, if the operational factor China and foreign countries machine electronic expansion valve opening is more than setting the
Three aperture threshold values, and the average valve opening of interior machine then judges the unit cold medium shortage less than the 4th aperture threshold value of setting.
Further, the average valve opening of interior machine is that the interior machine electric expansion valve of all starts in the operational factor is opened
The ratio of degree sum and the interior machine number of start.
Further, the judging unit crosses amount controller including refrigerant, is used for：
In unit refrigerating operaton stabilization, if subcooler valve opening is less than the 5th aperture of setting in the operational factor
Threshold value, the interior average valve opening of machine are less than the 6th aperture threshold value of setting and the average inlet/outlet pipe temperature difference of interior machine is warm less than setting first
Difference limen value, then judge the unit refrigerant excess；Or
In unit heating operation stabilization, if the operational factor China and foreign countries machine electronic expansion valve opening is less than setting the
Seven aperture threshold values, pipeline high pressure peak are less than more than the difference of setting HVT high voltage threshold and vapour point inlet pipe temperature and pipeline low voltage value and set
Fixed second temperature difference threshold, then judge the unit refrigerant excess.
Further, the average inlet/outlet pipe temperature difference of the interior machine is the interior machine inlet/outlet pipe temperature difference sum and the fortune of all starts
The ratio of the interior machine number started shooting in line parameter, wherein, the interior machine inlet/outlet pipe temperature difference is interior machine outlet pipe in the operational factor
Temperature and interior machine inlet pipe temperature difference.
Further, the air-conditioning warning device also includes running status determining device, is used for：
Before cold medium shortage or the excessive judgement of refrigerant is carried out to the unit according to the operational factor, if the fortune
Compressor frequency in line parameter is more than setpoint frequency threshold value, and the compressor continuous working period in the operational factor is more than setting
Unit refrigeration continuous operating time is more than setting time threshold value, then described in determining run time threshold value, and/or the operational factor
Unit refrigerating operaton stabilization；Or
Before cold medium shortage or the excessive judgement of refrigerant is carried out to the unit according to the operational factor, if the fortune
Compressor frequency in line parameter is more than setpoint frequency threshold value, and the compressor continuous working period in the operational factor is more than setting
Unit heats continuous operating time more than setting time threshold value in determining run time threshold value, and/or the operational factor, then described
Unit heating operation stabilization.
Further, the air-conditioning warning device also includes：
Part is reset, for the compressor continuous working period in the operational factor is judged more than setting run time
Before threshold value, if there is compressor start, compressor shutdown, interior machine number change, oil return or defrost, the compression in the unit
The machine continuous working period resets.
Further, the air-conditioning warning device also includes：
Calculator, is connected with communication unit, in the communication interface by the unit, obtaining the operation of the unit
Before parameter, the difference in height between the length of pipe and the unit according to air-conditioning system calculates the amount for needing to fill refrigerant, and root
The amount for filling refrigerant is needed to fill refrigerant to the unit according to described.
Further, the communication unit includes：Wireless communication interface or wired communication interface.
Further, the alarm unit includes：
Display, for show the operational factor and or judged result；
Buzzer, for sending alarm according to judged result.
The operational factor of unit of the utility model embodiment by being obtained according to communication unit, using judging unit to machine
Group carries out cold medium shortage or the excessive judgement of refrigerant, and carries out alarm using alarm unit, to realize being adjusted in Practical Project
In the examination stage, if finding cold medium shortage or refrigerant excess, start alarm.
Brief description of the drawings
Fig. 1 is the structural representation of the air-conditioning system of multi-connected machine in the prior art；
Fig. 2 is a kind of structural representation of air-conditioning warning device that the utility model embodiment one is provided；
Fig. 3 is the connection diagram of a kind of air-conditioning warning device that the utility model embodiment one is provided and unit；
Fig. 4 is the structural representation of another air-conditioning warning device that the utility model embodiment one is provided；
Fig. 5 is a kind of structural representation of air-conditioning warning device that the utility model embodiment two is provided；
Fig. 6 is a kind of flow chart of the air-conditioning alarm method performed by air-conditioning warning device in the utility model embodiment；
Fig. 7 is air-conditioning warning device a kind of air-conditioning alarm side performed in actual applications in the utility model embodiment
The flow chart of method；
Fig. 8 is the flow of another air-conditioning alarm method performed by air-conditioning warning device in the utility model embodiment
Figure.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that herein
Described specific embodiment is used only for explanation the utility model, rather than to restriction of the present utility model.Further need exist for
It is bright, for the ease of description, part rather than the entire infrastructure related to the utility model is illustrate only in accompanying drawing.
Embodiment one
The air-conditioning system of the multi-connected machine that the air-conditioning warning device provided to clearly introduce the present embodiment is applicable, is based on
The structural representation of the air-conditioning system of the multi-connected machine shown in Fig. 1, introduces its course of work as follows：
From figure 1 it appears that the air-conditioning system of the multi-connected machine includes an outer machine 02 and two interior machines 03.If receiving
Refrigeration instruction, the four-way valve 022 in outer machine 02 is turned on as shown in the figure.Compressor 021 is by the gas compression of low-temp low-pressure into high temperature
The gas of high pressure, and by the filtering of oil eliminator, will filter and be recycled to compressor in company with the oil component of gas discharge
021.Then, the gas of HTHP flows into outside heat exchangers 023 by four-way valve 022, and by outside heat exchangers 023
The condensation middle temperature high pressure of generation liquid.Then, the filtering and subcooler 026 of the liquid of middle temperature high pressure by filter 024
Cooling, in inflow in machine 03.Wherein, do not worked in process of refrigerastion China and foreign countries machines electric expansion valve 025.The liquid flow of central temperature high pressure
After entering interior machine 03, throttling, cooling and the step-down treatment of interior machine electric expansion valve 031 are first passed around, then flow into inner side heat exchange
Device 033 is evaporated to be made to be changed into gas from liquid heat absorption, to reach the effect of refrigeration.Finally, gas is from inner side heat exchanger 033
Discharge, enters in compressor 021, by four-way valve 022 and gas-liquid separator 029 so as to 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 used for high to the middle temperature for flowing into
Press liquid is throttled；Vapour point enters temperature-sensitive bag 028 to be used to measure vapour point inlet pipe temperature；Enter pipe temperature-sensitive bag 032 for measuring interior machine
Inlet pipe temperature；Outlet pipe temperature-sensitive bag 034 is used to measure interior machine outlet pipe temperature.
Fig. 2 is a kind of structural representation of air-conditioning warning device that the utility model embodiment one is provided, and the present embodiment can
When carrying out installation and debugging or maintenance and debugging suitable for the air-conditioning system to multi-connected machine, refrigerant is filled to the air-conditioning system of multi-connected machine
Situation.Referring to Fig. 2, the air-conditioning warning device 01 that the present embodiment is provided includes：Communication unit 10, judging unit 20 and alarm unit
30。
Wherein, communication unit 10, the communication interface with unit in air-conditioning system is connected, the operation for obtaining the unit
Parameter；Judging unit 20, is connected with the communication unit, for carrying out cold medium shortage to the unit according to the operational factor
Or the excessive judgement of refrigerant；Alarm unit 30, is connected with the judging unit, for carrying out alarm according to judged result.
It should be noted that unit is the general designation of multiple interior machines and outer machine in air-conditioning system；Operational factor is described for reaction
The parameter of unit current operating conditions；Cold medium shortage is the situation for adding the amount of refrigerant to be less than the amount for needing filling refrigerant；Refrigerant
It is excessively the situation for adding the amount of refrigerant to be more than the amount for needing filling refrigerant；Refrigerant is normally to add the amount of refrigerant to be equal to need to add
Note the situation of the amount of refrigerant.It is understood that judged result can be cold medium shortage, refrigerant excess and refrigerant it is normal in extremely
Few one kind.
Optionally, the communication unit 10 can include：Wireless communication interface or wired communication interface.So as to air-conditioning alarm
Device 01 can be connected by wireless communication interface or wired communication interface with unit, to obtain the operational factor of the unit.
Fig. 3 is the connection diagram of a kind of air-conditioning warning device that the utility model embodiment one is provided and unit.Referring to Fig. 3, air-conditioning
Warning device 01 is connected by wired communication mode or communication with machine in the multiple in unit and an outer machine, to obtain
Take the operational factor of outer machine and multiple interior machines.
Specifically, the alarm unit 30 includes：Display and buzzer.
Wherein, display, for show the 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 it can realize alarm by buzzer, can be with
Alarm is realized by light emitting diode or audible-visual annunciator.The present embodiment is to this and is not limited.
It is understood that the stage is debugged in Practical Project, if being connected to cold medium shortage or the excessive alarm of refrigerant, debugging
Personnel carry out respective handling to refrigerant, so as to protect the normal operation of unit in positive air-conditioning system.And then lifting unit runnability,
Life-span and debugging efficiency, and reduce after-sales service cost.Wherein, respective handling can be：If cold medium shortage, to air-conditioning system
Refrigerant is continuously added until stopping to the alarm of cold medium shortage；If refrigerant excess, outside by the refrigerant in air-conditioning system
Discharge, until stopping to the excessive alarm of refrigerant.Specifically, the alarm to cold medium shortage can be by indirect ring buzzing
Device, it is also possible to show that red is pointed out by Light-Emitting Diode；It is corresponding, can be by continuous ring to the excessive alarm of refrigerant
Ring buzzer, it is also possible to show that yellow is pointed out by Light-Emitting Diode, the present embodiment is not defined to this.
Fig. 4 is the structural representation of another air-conditioning warning device that the utility model embodiment one is provided.Referring to Fig. 4,
In actual applications, air-conditioning warning device includes：Power pack, for being powered to air-conditioning warning device；Communications portion, for
Unit sets up communication, and obtains the operational factor of unit；Interactive portion, for according to operational factor judge whether cold medium shortage or
Refrigerant excess, and alarmed and shown.Wherein, interactive portion can also include：Touch-screen, is connected with communication unit, is used for
Control instruction is sent to unit by communication unit, directly to control unit to work, it is to avoid use the trouble of air-conditioning remote control.
The technical scheme of the utility model embodiment, the operational factor of the unit by being obtained according to communication unit is utilized
Judging unit carries out cold medium shortage or the excessive judgement of refrigerant to unit, and carries out alarm using alarm unit.To realize
The stage is debugged in Practical Project, if finding cold medium shortage or refrigerant excess, starts alarm.
To realize the accurate judgement to cold medium shortage situation, the judging unit can include cold medium shortage controller, use
In：
In unit refrigerating operaton stabilization, if subcooler valve opening is more than the first aperture of setting in the operational factor
Threshold value, and the average valve opening of interior machine then judges the unit cold medium shortage more than the second aperture threshold value of setting；Or
In unit heating operation stabilization, if the operational factor China and foreign countries machine electronic expansion valve opening is more than setting the
Three aperture threshold values, and the average valve opening of interior machine then judges the unit cold medium shortage less than the 4th aperture threshold value of setting.
Wherein, subcooler valve refers to subcooler electric expansion valve.The interior average valve opening of machine is all in the operational factor
The ratio of the interior machine electronic expansion valve opening sum of start and the interior machine number of start.First aperture threshold value, the second aperture threshold value,
The critical 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
What true experiment was obtained.
To realize the accurate judgement to refrigerant excess situation, the judging unit can cross amount controller including refrigerant, use
In：
In unit refrigerating operaton stabilization, if subcooler valve opening is less than the 5th aperture of setting in the operational factor
Threshold value, the interior average valve opening of machine are less than the 6th aperture threshold value of setting and the average inlet/outlet pipe temperature difference of interior machine is warm less than setting first
Difference limen value, then judge the unit refrigerant excess；Or
In unit heating operation stabilization, if the operational factor China and foreign countries machine electronic expansion valve opening is less than setting the
Seven aperture threshold values, pipeline high pressure peak are less than more than the difference of setting HVT high voltage threshold and vapour point inlet pipe temperature and pipeline low voltage value and set
Fixed second temperature difference threshold, then judge the unit refrigerant excess.
Wherein, the average inlet/outlet pipe temperature difference of the interior machine is the interior machine inlet/outlet pipe temperature difference sum and the operation ginseng of all starts
The ratio of the interior machine number started shooting in number, further, the interior machine inlet/outlet pipe temperature difference is interior machine outlet pipe in the operational factor
Temperature and interior machine inlet pipe temperature difference.
Specifically, interior machine inlet pipe temperature can be measured by the pipe temperature-sensitive bag that enters in interior machine；Interior machine outlet pipe temperature can be by interior
Outlet pipe temperature-sensitive bag in machine is measured；Vapour point inlet pipe temperature can enter temperature-sensitive bag and measure by vapour point；Pipeline high pressure peak can be by
Pressure sensor is measured in the high-pressure side of compressor；Low voltage value can be by pressure sensor in compressor low-pressure side measure.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
Critical value when matchmaker is excessive, can be obtained by a large amount of emulation experiments, it is also possible to be obtained by the experience of those skilled in the art.
Embodiment two
Fig. 5 is a kind of structural representation of air-conditioning warning device that the utility model embodiment two is provided.The present embodiment is
A kind of alternative proposed on the basis of above-described embodiment.Referring to the air-conditioning warning device bag that Fig. 5, the present embodiment are provided
Include：Communication unit 10, alarm unit 30, cold medium shortage controller 21, refrigerant cross amount controller 22, running status determining device 23,
Reset part 24 and calculator 40.
Wherein, the running status determining device 23 can be arranged in judging unit, with the cold medium shortage controller 21
Amount controller 22 is crossed with the refrigerant to connect, it is also possible to be arranged on outside judging unit, be connected with judging unit.The running status
Determining device 23 is used for：
Before cold medium shortage or the excessive judgement of refrigerant is carried out to the unit according to the operational factor, if the fortune
Compressor frequency in line parameter is more than setpoint frequency threshold value, and the compressor continuous working period in the operational factor is more than setting
Unit refrigeration continuous operating time is more than setting time threshold value, then described in determining run time threshold value, and/or the operational factor
Unit refrigerating operaton stabilization；Or
Before cold medium shortage or the excessive judgement of refrigerant is carried out to the unit according to the operational factor, if the fortune
Compressor frequency in line parameter is more than setpoint frequency threshold value, and the compressor continuous working period in the operational factor is more than setting
Unit heats continuous operating time more than setting time threshold value in determining run time threshold value, and/or the operational factor, then described
Unit heating operation stabilization.
It should be noted that frequency values when setpoint frequency threshold value is for compressor operating stabilization；Setting run time threshold value
For compressor from start to it is stable when continuous working period；Setting time threshold value be unit from start shooting to freezing stably or
Heat continuous working period during stabilization.Wherein, setpoint frequency threshold value, setting run time threshold value and setting time threshold value can be with
Obtained by a large amount of emulation experiments, it is also possible to obtained by the experience of those skilled in the art.
Specifically, reset part 24 be connected with running status determining device 23, for the pressure in the operational factor is judged
Before the contracting machine continuous working period is more than setting run time threshold value, if there is compressor start, compressor shutdown, interior in the unit
Machine number change, oil return or defrost, then reset the compressor continuous working period.So that persistently being transported by compressor
The row time can be accurately judged the state of unit, and then improves the accuracy rate excessively judged cold medium shortage or refrigerant.
The technical scheme of the utility model embodiment, refrigerant excess is ensure that by running status determining device and replacement part
Controller and cold medium shortage controller are in unit refrigerating operaton stabilization or in unit heating operation stabilization to cold
The situation that matchmaker is not enough or refrigerant is excessive is judged, so as to improve the accurate of the situation judgement excessive to cold medium shortage or refrigerant
Rate.
Further, the air-conditioning warning device that the present embodiment is provided can also include：Calculator 40.
Wherein, calculator 40, are connected with communication unit 10, for the communication interface of the unit in by air-conditioning system, obtain
Before taking the operational factor of the unit, the difference in height between the length of pipe and the unit according to air-conditioning system is calculated to be needed to add
The amount of refrigerant is noted, and needs the amount for filling refrigerant to fill refrigerant to the unit according to described.Debugged in the engineering of air-conditioning system
In, if the working condition of air-conditioning system is refrigeration, coolant charging is carried out in high-pressure side；If the working condition of air-conditioning system is system
Heat, then carry out coolant charging in low-pressure side.
Fig. 6 is a kind of flow chart of the air-conditioning alarm method performed by air-conditioning warning device in the utility model embodiment.
When the method goes for carrying out installation and debugging or maintenance and debugging to the air-conditioning system of multi-connected machine, to the air-conditioning system of multi-connected machine
Fill the situation of refrigerant.The method can be performed by above-mentioned air-conditioning warning device.Referring to the air-conditioning report that Fig. 6, the present embodiment are provided
Alarm method includes：
S110, the communication interface by unit in air-conditioning system, obtain the operational factor of the unit.
S120, the judgement for carrying out cold medium shortage or refrigerant excess to the unit according to the operational factor.
S130, alarm is carried out according to judged result.
Fig. 7 is air-conditioning warning device a kind of air-conditioning alarm side performed in actual applications in the utility model embodiment
The flow chart of method.Referring to Fig. 7, in the Practical Project debugging of the air-conditioning system to multi-connected machine, first with the air-conditioning system of multi-connected machine
Interior machine and outer machine in system set up communication, and obtain the operational factor of interior machine and outer machine；Then, according to operational factor to refrigerant not
Foot or refrigerant are excessively judged；Finally, respective handling is carried out according to judged result.
The technical scheme of the utility model embodiment, by the operational factor according to the unit for obtaining, is carried out cold to unit
The judgement that matchmaker is not enough or refrigerant is excessive, and alarm is carried out, to realize debugging the stage in Practical Project, if finding cold medium shortage
Or refrigerant excess, then start alarm.
Further, the judgement for cold medium shortage being carried out to the unit according to the operational factor can include：
In unit refrigerating operaton stabilization, if subcooler valve opening is more than the first aperture of setting in the operational factor
Threshold value, and the average valve opening of interior machine then judges the unit cold medium shortage more than the second aperture threshold value of setting；Or
In unit heating operation stabilization, if the operational factor China and foreign countries machine electronic expansion valve opening is more than setting the
Three aperture threshold values, and the average valve opening of interior machine then judges the unit cold medium shortage less than the 4th aperture threshold value of setting.
Further, the average valve opening of interior machine is that the interior machine electric expansion valve of all starts in the operational factor is opened
The ratio of degree sum and the interior machine number of start.
Further, the excessive judgement of refrigerant being carried out to the unit according to the operational factor can include：
In unit refrigerating operaton stabilization, if subcooler valve opening is less than the 5th aperture of setting in the operational factor
Threshold value, the interior average valve opening of machine are less than the 6th aperture threshold value of setting and the average inlet/outlet pipe temperature difference of interior machine is warm less than setting first
Difference limen value, then judge the unit refrigerant excess；Or
In unit heating operation stabilization, if the operational factor China and foreign countries machine electronic expansion valve opening is less than setting the
Seven aperture threshold values, pipeline high pressure peak are less than more than the difference of setting HVT high voltage threshold and vapour point inlet pipe temperature and pipeline low voltage value and set
Fixed second temperature difference threshold, then judge the unit refrigerant excess.
Further, before cold medium shortage or the excessive judgement of refrigerant is carried out to the unit according to the operational factor,
Can also include：
If the compressor frequency in the operational factor is more than setpoint frequency threshold value, the compressor in the operational factor is held
Continuous run time is more than unit refrigeration continuous operating time in setting run time threshold value, and/or the operational factor more than setting
Fix time threshold value, then the unit refrigerating operaton stabilization；Or
If the compressor frequency in the operational factor is more than setpoint frequency threshold value, the compressor in the operational factor is held
Continuous run time heats continuous operating time more than setting more than unit in setting run time threshold value, and/or the operational factor
Fix time threshold value, then the unit heating operation stabilization.
Further, the compressor continuous working period in the operational factor is judged is more than setting run time threshold value
Before, can also include：
If there is compressor start, compressor shutdown, interior machine number change, oil return or defrost, the pressure in the unit
The contracting machine continuous working period resets.
Further, the average inlet/outlet pipe temperature difference of the interior machine is the interior machine inlet/outlet pipe temperature difference sum and the fortune of all starts
The ratio of the interior machine number started shooting in line parameter, wherein, the interior machine inlet/outlet pipe temperature difference is interior machine outlet pipe in the operational factor
Temperature and interior machine inlet pipe temperature difference.
Further, in by air-conditioning system unit communication interface, before obtaining the operational factor of the unit, also
Can include：
Difference in height between the length of pipe and the unit according to air-conditioning system calculates the amount for needing to fill refrigerant, and according to
It is described to need the amount for filling refrigerant to fill refrigerant to the unit.
Fig. 8 is the flow of another air-conditioning alarm method performed by air-conditioning warning device in the utility model embodiment
Figure.The method can be performed by above-mentioned air-conditioning warning device.Referring to Fig. 8, the air-conditioning alarm method that the present embodiment is provided includes：
S210, the amount for needing to fill refrigerant, and root are calculated according to the difference in height between the length of pipe and unit of air-conditioning system
The amount for filling refrigerant is needed to fill refrigerant to the unit according to described.
S220, the communication interface by the unit, obtain the operational factor of the unit.
If there is compressor start, compressor shutdown, interior machine number change, oil return or defrost in S230, the unit, will
The compressor continuous working period in the operational factor resets.
If the compressor frequency in S240, the operational factor is more than setpoint frequency threshold value, the pressure in the operational factor
The contracting machine continuous working period is more than unit refrigeration continuous operating time in setting run time threshold value, and/or the operational factor
More than setting time threshold value, then the unit refrigerating operaton is stable；Or
If the compressor frequency in the operational factor is more than setpoint frequency threshold value, the compressor in the operational factor is held
Continuous run time heats continuous operating time more than setting more than unit in setting run time threshold value, and/or the operational factor
Fix time threshold value, then the unit heating operation stabilization.
S250, in unit refrigerating operaton stabilization, if subcooler valve opening is more than setting the in the operational factor
One aperture threshold value, and the average valve opening of interior machine then judges the unit cold medium shortage more than the second aperture threshold value of setting；If described
Subcooler valve opening is less than the 6th aperture of setting less than the 5th aperture threshold value of setting, the interior average valve opening of machine in operational factor
Threshold value and the average inlet/outlet pipe temperature difference of interior machine then judge the unit refrigerant excess less than the first temperature difference threshold of setting；Or
In unit heating operation stabilization, if the operational factor China and foreign countries machine electronic expansion valve opening is more than setting the
Three aperture threshold values, and the average valve opening of interior machine then judges the unit cold medium shortage less than the 4th aperture threshold value of setting；If
The operational factor China and foreign countries machine electronic expansion valve opening is high more than setting less than the 7th aperture threshold value of setting, pipeline high pressure peak
The difference of pressure threshold value and vapour point inlet pipe temperature and pipeline low voltage value then judges the unit refrigerant mistake less than the second temperature difference threshold of setting
Amount.
Wherein, the average valve opening of interior machine be all starts in the operational factor interior machine electronic expansion valve opening it
And the ratio with the interior machine number of start.The interior average inlet/outlet pipe temperature difference of machine is interior machine inlet/outlet pipe temperature difference sum and the institute of all starts
State the ratio of the interior machine number started shooting in operational factor.The interior machine inlet/outlet pipe temperature difference is interior machine outlet pipe temperature in the operational factor
Degree and interior machine inlet pipe temperature difference.
S260, alarm is carried out according to judged result.
The technical scheme that the utility model embodiment is provided, by the case where unit operation stabilization is ensured, according to obtaining
The unit operation parameter for taking is judged cold medium shortage or the excessive situation of refrigerant, and is alarmed according to judged result.From
And realize debugging the stage in Practical Project, if finding cold medium shortage or refrigerant excess, start alarm.
Note, above are only preferred embodiment of the present utility model and institute's application technology principle.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, can carry out for a person skilled in the art various bright
Aobvious change, readjust and substitute without departing from protection domain of the present utility model.Therefore, although by above example
The utility model is described in further detail, but the utility model is not limited only to above example, is not departing from
In the case that the utility model is conceived, more other Equivalent embodiments can also be included, and scope of the present utility model is by appended
Right determine.
Claims (10)
1. a kind of air-conditioning warning device, it is characterised in that including：
Communication unit, the communication interface with unit in air-conditioning system is connected, the operational factor for obtaining the unit；
Judging unit, is connected with the communication unit, for according to the operational factor unit is carried out cold medium shortage or
The excessive judgement of refrigerant；
Alarm unit, is connected with the judging unit, for carrying out alarm according to judged result.
2. device according to claim 1, it is characterised in that the judging unit includes cold medium shortage controller, is used for：
In unit refrigerating operaton stabilization, if subcooler valve opening is more than the first aperture threshold of setting in the operational factor
Value, and the average valve opening of interior machine then judges the unit cold medium shortage more than the second aperture threshold value of setting；Or
In unit heating operation stabilization, if the operational factor China and foreign countries machine electronic expansion valve opening is opened more than setting the 3rd
Degree threshold value, and the average valve opening of interior machine then judges the unit cold medium shortage less than the 4th aperture threshold value of setting.
3. device according to claim 2, it is characterised in that the interior average valve opening of machine is institute in the operational factor
There are the interior machine electronic expansion valve opening sum of start and the ratio of the interior machine number of start.
4. device according to claim 2, it is characterised in that the judging unit crosses amount controller including refrigerant, is used for：
In unit refrigerating operaton stabilization, if subcooler valve opening is less than the 5th aperture threshold of setting in the operational factor
Value, the interior average valve opening of machine are less than the 6th aperture threshold value of setting and the average inlet/outlet pipe temperature difference of interior machine is less than first temperature difference of setting
Threshold value, then judge the unit refrigerant excess；Or
In unit heating operation stabilization, if the operational factor China and foreign countries machine electronic expansion valve opening is opened less than setting the 7th
Degree threshold value, pipeline high pressure peak more than setting HVT high voltage threshold and vapour point inlet pipe temperature and pipeline low voltage value difference less than setting the
Two temperature difference thresholds, then judge the unit refrigerant excess.
5. device according to claim 4, it is characterised in that the interior average inlet/outlet pipe temperature difference of machine is the interior of all starts
The ratio of the interior machine number started shooting in machine inlet/outlet pipe temperature difference sum and the operational factor, wherein, the interior machine inlet/outlet pipe temperature difference
It is interior machine outlet pipe temperature in the operational factor and interior machine inlet pipe temperature difference.
6. device according to claim 1, it is characterised in that also including running status determining device, be used for：
Before cold medium shortage or the excessive judgement of refrigerant is carried out to the unit according to the operational factor, if the operation ginseng
Compressor frequency in number is more than setpoint frequency threshold value, and the compressor continuous working period in the operational factor transports more than setting
Unit refrigeration continuous operating time is more than setting time threshold value in row time threshold, and/or the operational factor, then the unit
Refrigerating operaton stabilization；Or
Before cold medium shortage or the excessive judgement of refrigerant is carried out to the unit according to the operational factor, if the operation ginseng
Compressor frequency in number is more than setpoint frequency threshold value, and the compressor continuous working period in the operational factor transports more than setting
Unit heats continuous operating time more than setting time threshold value in row time threshold, and/or the operational factor, then the unit
Heating operation stabilization.
7. device according to claim 6, it is characterised in that also include：
Part is reset, for the compressor continuous working period in the operational factor is judged more than setting run time threshold value
Before, if compressor start, compressor shutdown, interior machine number change, oil return or defrost occurs in the unit, by the compressor
Continuous working period resets.
8. device according to claim 1, it is characterised in that also include：
Calculator, is connected with the communication unit, in the communication interface by the unit, obtaining the operation of the unit
Before parameter, the difference in height between the length of pipe and the unit according to air-conditioning system calculates the amount for needing to fill refrigerant, and root
The amount for filling refrigerant is needed to fill refrigerant to the unit according to described.
9. device according to claim 1, it is characterised in that the communication unit includes：Wireless communication interface is wired
Communication interface.
10. device according to claim 1, it is characterised in that the alarm unit includes：
Display, for show the operational factor and or judged result；
Buzzer, for sending alarm according to judged result.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621042245.1U CN206281150U (en) | 2016-09-07 | 2016-09-07 | A kind of air-conditioning warning device |
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| CN201621042245.1U CN206281150U (en) | 2016-09-07 | 2016-09-07 | A kind of air-conditioning warning device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322680A (en) * | 2016-09-07 | 2017-01-11 | 珠海格力电器股份有限公司 | Alarm device and method for air conditioner |
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2016
- 2016-09-07 CN CN201621042245.1U patent/CN206281150U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322680A (en) * | 2016-09-07 | 2017-01-11 | 珠海格力电器股份有限公司 | Alarm device and method for air conditioner |
| CN106322680B (en) * | 2016-09-07 | 2018-08-07 | 珠海格力电器股份有限公司 | A kind of air-conditioning warning device and method |
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