CN109282420A - Amount of refrigerant detection method, device, system and the air-conditioning of temperature control equipment - Google Patents
Amount of refrigerant detection method, device, system and the air-conditioning of temperature control equipment Download PDFInfo
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- CN109282420A CN109282420A CN201811158489.XA CN201811158489A CN109282420A CN 109282420 A CN109282420 A CN 109282420A CN 201811158489 A CN201811158489 A CN 201811158489A CN 109282420 A CN109282420 A CN 109282420A
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- Prior art keywords
- expansion valve
- amount
- aperture
- refrigerant
- electric expansion
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Classifications
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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
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
- F25B2500/222—Detecting refrigerant leaks
Abstract
This application involves a kind of temperature control equipment amount of refrigerant detection method, device, system and air-conditionings, obtain amount of refrigerant detection parameters；Signal is controlled according to amount of refrigerant detection parameters and preset parameter area output electronic expansion valve opening, electronic expansion valve opening control signal is used to control the aperture of electric expansion valve, so that amount of refrigerant detection parameters are in default range；The aperture of electric expansion valve, obtains electric expansion valve target aperture when obtaining amount of refrigerant detection parameters in preset parameter area；Amount of refrigerant is carried out according to electric expansion valve target aperture and preset aperture threshold value to detect to obtain testing result.When amount of refrigerant detection parameters are in preset parameter area, determine electric expansion valve target aperture, based on electronic expansion valve opening in temperature control equipment operational process compared with preset aperture threshold size, judge whether system lacks refrigerant, without increasing cost, detection process is simple and reliable.
Description
Technical field
This application involves temperature control equipment control technology fields, more particularly to a kind of refrigerant of temperature control equipment
Detection method of content, device, system and air-conditioning.
Background technique
In recent years, being constantly progressive with social development, the continuous improvement that consumer requires quality of the life, to high energy efficiency
Temperature control equipment such as air-conditioning demand it is growing.
Refrigerant is temperature control equipment such as air-conditioning system " blood ", plays very key effect, refrigerant is in temperature
Vaporization, the conversion of liquefied state are completed in the closed-cycle system of adjustment equipment, realize the heat absorption and heat release of temperature control equipment,
Achieve the effect that refrigeration, heating.General temperature control equipment is in normal mounting and in use, in rectification service life, machine
Group internal refrigeration storage agent amount will not reduce, that is, be not in refrigerant leakage the problem of, at this time the performance of temperature control equipment, can
It can guarantee by property.But if occurring installing the welding of lack of standardization or pipeline, the bad problem of quality of connection, adjusted in temperature
It is likely to the problem of refrigerant leakage occur in the service life of equipment, temperature control equipment can be made cooling or heating effect occur
The problem of reduction, pipeline frosting, heat exchanger freeze, and error protection is shut down, influences the normal use of temperature control equipment, serious
It is also possible to lead to temperature control equipment damage of internal device.
Traditional judgement temperature control equipment lacks refrigerant and is mainly based upon temperature detection, current detecting, pressure detecting etc.
Condition, although can a degree of judgement system lack refrigerant, Rule of judgment is complex, and must rely on more
Sensor, detection process are complicated.
Summary of the invention
Based on this, it is necessary to for the technical problem of traditional temperature control equipment amount of refrigerant detection process complexity,
A kind of temperature control equipment amount of refrigerant detection method, device, system and air-conditioning that detection process is simple and reliable is provided.
A kind of amount of refrigerant detection method of temperature control equipment, which comprises
Obtain amount of refrigerant detection parameters；
Signal is controlled according to the amount of refrigerant detection parameters and preset parameter area output electronic expansion valve opening,
The electronic expansion valve opening control signal is used to control the aperture of electric expansion valve, so that amount of refrigerant detection parameters are pre-
If parameter area in；
The electric expansion valve opens when obtaining the amount of refrigerant detection parameters in the preset parameter area
Degree, obtains electric expansion valve target aperture；
Amount of refrigerant is carried out according to the electric expansion valve target aperture and preset aperture threshold value to be detected
As a result.
It is described in one of the embodiments, to be exported according to the amount of refrigerant detection parameters and preset parameter area
Electronic expansion valve opening controls signal, comprising:
When amount of refrigerant detection parameters are less than preset parameter area, output electronic expansion valve opening reduces control letter
Number, the electronic expansion valve opening reduces the aperture reduction that control signal is used to control electric expansion valve.
It is described in one of the embodiments, to be exported according to the amount of refrigerant detection parameters and preset parameter area
Electronic expansion valve opening controls signal, comprising:
When amount of refrigerant detection parameters are greater than preset parameter area, output electronic expansion valve opening increases control letter
Number, the electronic expansion valve opening increases the aperture increasing that control signal is used to control electric expansion valve.
It is described in one of the embodiments, to be carried out according to the electric expansion valve target aperture and preset aperture threshold value
Amount of refrigerant detects to obtain testing result, comprising:
When the electric expansion valve target aperture is greater than preset aperture threshold value, testing result lacks for amount of refrigerant
It is few.
It is described when the electric expansion valve target aperture is greater than preset aperture threshold value in one of the embodiments,
Testing result lacks for amount of refrigerant, comprising:
When the electric expansion valve target aperture is greater than the preset aperture threshold value, the electric expansion valve mesh is detected
Mark the duration that aperture is greater than the preset aperture threshold value；
When the duration reaches the first preset duration, the testing result lacks for amount of refrigerant, and unit
Refrigerant is lacked before booting.
It is described in one of the embodiments, to be carried out according to the electric expansion valve target aperture and preset aperture threshold value
Amount of refrigerant detects to obtain testing result, comprising:
When the electric expansion valve target aperture is less than or equal to preset aperture threshold value, testing result contains for refrigerant
Amount is normal.
It is described when the electric expansion valve target aperture is less than or equal to preset aperture threshold in one of the embodiments,
When value, testing result is after amount of refrigerant is normal, further includes:
When detecting that the electric expansion valve target aperture is greater than the preset aperture threshold value, it is swollen to detect the electronics
Swollen valve target aperture is greater than the duration of the preset aperture threshold value；
When the duration reaches the second preset duration, the testing result is that unit gradually lacks in the process of running
Few refrigerant.
In one of the embodiments, the amount of refrigerant detection parameters be delivery temperature or the degree of superheat,
When the amount of refrigerant detection parameters are delivery temperature, preset parameter area is preset delivery temperature model
It encloses；
When the amount of refrigerant detection parameters are the degree of superheat, preset parameter area is preset degree of superheat range.
A kind of amount of refrigerant detection device of temperature control equipment, described device include:
Detection parameters obtain module, for obtaining amount of refrigerant detection parameters；
Electronic expansion valve opening control module, for according to the amount of refrigerant detection parameters and preset parameter area
It exports electronic expansion valve opening and controls signal, the electronic expansion valve opening control signal is for controlling opening for electric expansion valve
Degree, so that amount of refrigerant detection parameters are in preset parameter area；
Electric expansion valve target aperture determining module, for obtaining the amount of refrigerant detection parameters described preset
The aperture of electric expansion valve when in parameter area obtains electric expansion valve target aperture；
Detection module, for carrying out amount of refrigerant according to the electric expansion valve target aperture and preset aperture threshold value
Detection obtains testing result.
A kind of computer readable storage medium, is stored thereon with computer program, and the computer program is held by processor
It is performed the steps of when row
Obtain amount of refrigerant detection parameters；
Signal is controlled according to the amount of refrigerant detection parameters and preset parameter area output electronic expansion valve opening,
The electronic expansion valve opening control signal is used to control the aperture of electric expansion valve, so that amount of refrigerant detection parameters are pre-
If parameter area in；
The electric expansion valve opens when obtaining the amount of refrigerant detection parameters in the preset parameter area
Degree, obtains electric expansion valve target aperture；
Amount of refrigerant is carried out according to the electric expansion valve target aperture and preset aperture threshold value to be detected
As a result.
A kind of amount of refrigerant detection system of temperature control equipment, including processor and electric expansion valve, the processing
Device connects the electric expansion valve,
The processor is used for according to method output electronic expansion valve opening control signal described above and is examined
Survey result；
The electric expansion valve controls electric expansion valve for the electronic expansion valve opening control signal based on the received
Aperture so that amount of refrigerant detection parameters are in preset parameter area.
A kind of air-conditioning, the amount of refrigerant detection system including temperature control equipment described above.
Above-mentioned temperature control equipment amount of refrigerant detection method, device, system and air-conditioning obtain amount of refrigerant detection
Parameter；Signal is controlled according to amount of refrigerant detection parameters and preset parameter area output electronic expansion valve opening, electronics is swollen
Swollen valve opening control signal is used to control the aperture of electric expansion valve, so that amount of refrigerant detection parameters are in preset range
It is interior；The aperture of electric expansion valve, obtains electric expansion valve when obtaining amount of refrigerant detection parameters in preset parameter area
Target aperture；Amount of refrigerant is carried out according to electric expansion valve target aperture and preset aperture threshold value to detect to obtain detection knot
Fruit.When amount of refrigerant detection parameters are in preset parameter area, electric expansion valve target aperture is determined, be based on temperature tune
It saves electronic expansion valve opening in equipment running process and judges whether system lacks refrigeration compared with preset aperture threshold size
Agent, without increasing cost, detection process is simple and reliable.
Detailed description of the invention
Fig. 1 is the amount of refrigerant detection method flow chart of temperature control equipment in one embodiment；
Fig. 2 is the amount of refrigerant detection method flow chart of temperature control equipment in another embodiment；
Fig. 3 is the amount of refrigerant detection method flow chart of temperature control equipment in another embodiment；
Fig. 4 is electronic expansion valve controls flow diagram in one embodiment；
Fig. 5 is electronic expansion valve controls flow diagram in another embodiment；
Fig. 6 is the amount of refrigerant detection method flow chart of temperature control equipment in another embodiment；
Fig. 7 is the amount of refrigerant detection method flow chart of temperature control equipment in another embodiment；
Fig. 8 is the amount of refrigerant detection method flow chart of temperature control equipment in another embodiment；
Fig. 9 is the amount of refrigerant detection method flow chart of temperature control equipment in another embodiment；
Figure 10 is the amount of refrigerant detection method flow diagram of temperature control equipment in one embodiment；
Figure 11 is the amount of refrigerant structure of the detecting device block diagram of temperature control equipment in one embodiment；
Figure 12 is the amount of refrigerant detection system structural block diagram of temperature control equipment in one embodiment.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not
For limiting the application.
In one embodiment, as shown in Figure 1, providing a kind of amount of refrigerant detection method of temperature control equipment,
It is applied to be illustrated for processor in this way, comprising the following steps:
Step S110: amount of refrigerant detection parameters are obtained.
Specifically, in the present embodiment, amount of refrigerant detection parameters are delivery temperature or the degree of superheat, and the degree of superheat can be
Suction superheat (by obtaining suction temperature and pressure of inspiration(Pi) and calculating) or evaporator superheat (pass through acquisition evaporator
Inlet pipe and outlet pipe temperature computation).It is the master of current electronic expansion valve controls by delivery temperature control and degree of superheat control
Want method.
Step S120: according to amount of refrigerant detection parameters and the output electronic expansion valve opening control of preset parameter area
Signal.
Specifically, electronic expansion valve opening control signal is used to control the aperture of electric expansion valve, so that amount of refrigerant
Detection parameters are in default range.When amount of refrigerant detection parameters are delivery temperature, preset parameter area is default
Exhaust temperature ranges；When amount of refrigerant detection parameters are the degree of superheat, preset parameter area is preset degree of superheat model
It encloses.Amount of refrigerant detection parameters and preset parameter area are compared to obtain comparison result, according to comparison result and in advance
If electronic expansion valve opening control corresponding relationship export corresponding electronic expansion valve opening and control signal so that amount of refrigerant
Detection parameters are in default range.
Step S130: the aperture of electric expansion valve when obtaining amount of refrigerant detection parameters in preset parameter area,
Obtain electric expansion valve target aperture.
Specifically, when amount of refrigerant detection parameters are in preset parameter area, electric expansion valve at this time is obtained
Aperture maintains current aperture as electric expansion valve target aperture.
Step S140: amount of refrigerant is carried out according to electric expansion valve target aperture and preset aperture threshold value and detects to obtain
Testing result.
Specifically, the temperature control equipment to be throttled using electric expansion valve, what electric expansion valve can be independent or comprehensive
Adjustment appropriate is carried out according to detection parameters such as the environment temperature of temperature control equipment, the heat exchanger degree of superheat, delivery temperatures, one
Perfect electronic expansion valve regulation control can be such that temperature control equipment operates in normal range, guarantee temperature control equipment
Cooling, heating effect, while also guaranteeing the reliability of temperature control equipment, but if the aperture of electric expansion valve continues one section
Between reach preset aperture threshold value, then can be determined that system has exception, and this exception is likely to system lacks refrigerant and draw
It rises.By principles above, it is compared according to electric expansion valve target aperture and preset aperture threshold value, is obtained according to comparison result
To testing result.
In another embodiment, it if temperature control equipment is practical not to be equipped with electric expansion valve throttling, but uses
It is swollen still virtual electronics can be calculated by collected detection parameters in other such as capillaries, heating power expansion valve mode
The target aperture of swollen valve still can be determined that system lacks refrigerant if target aperture is more than preset aperture threshold value.
The amount of refrigerant detection method of above-mentioned temperature control equipment, when amount of refrigerant detection parameters are in preset parameter
When in range, electric expansion valve target aperture is determined, based on electronic expansion valve opening in temperature control equipment operational process and in advance
If aperture threshold size compare, judge whether system lacks refrigerant, it is simple and reliable without increasing cost.Avoid tradition
Judgement air-conditioning system lack refrigerant and be mainly based upon the conditions such as temperature detection, current detecting, pressure detecting, although can be certain
The judgement system of degree lacks refrigerant, but Rule of judgment is complex, and must rely on more sensor, and use electricity
The system of sub- expansion valve throttling, the aperture of electric expansion valve can have adjustment appropriate according to the variation of system mode, and freeze
After agent lacks, the adjustment of electronic expansion valve opening will affect temperature, electric current, pressure and other parameters, will affect and sentences by these parameters
Disconnected the drawbacks of whether lacking the determination method accuracy of refrigerant.
In one embodiment, electronic expansion valve opening control signal include electronic expansion valve opening reduce control signal and
Electronic expansion valve opening increases control signal, as shown in Fig. 2, step S120 includes when amount of refrigerant detection parameters are less than default
Parameter area when, output electronic expansion valve opening reduce control signal.
Specifically, electronic expansion valve opening reduces the aperture reduction that control signal is used to control electric expansion valve.In this reality
It applies in example, electronic expansion valve opening reduces the default aperture of aperture reduction that control signal is used to control electric expansion valve, with correspondence
Increase amount of refrigerant parameter values for detection, wherein default aperture can be adjusted according to actual needs.
In another embodiment, as shown in figure 3, step S120 includes when amount of refrigerant detection parameters are greater than preset
When parameter area, output electronic expansion valve opening increases control signal.
Specifically, electronic expansion valve opening increases the aperture increasing that control signal is used to control electric expansion valve.In this reality
It applies in example, electronic expansion valve opening increases the default aperture of aperture increase that control signal is used to control electric expansion valve, to reduce
Amount of refrigerant parameter values for detection.
Further, as shown in Figure 4,5, traditional electric expansion valve air-conditioning mainly according to delivery temperature or crosses thermal control
System.Wherein as shown in " electronic expansion valve controls process 1 ", after compressor start operation, initially opening for electric expansion valve is controlled
Whether degree is default aperture, completes the initialization of electric expansion valve, by system exhaust temperature in comparison confirmation operation default
Exhaust temperature ranges in, if temperature is excessively high, control electronic expansion valve opening increasing, if temperature is too low, control electronic expansion
Valve opening reduces, and if delivery temperature is in preset exhaust temperature ranges, then can maintain current aperture.For " electronics is swollen
Swollen valve control flow 2 " is then by system overheat degree (generally suction superheat) in comparison confirmation operational process, such as the degree of superheat
It is bigger than normal, then electronic expansion valve opening increasing is controlled, if the degree of superheat is less than normal, electronic expansion valve opening reduction is controlled, as the degree of superheat exists
In preset degree of superheat range, that is, normal range (NR), then current aperture can be maintained.
In one embodiment, as shown in fig. 6, step S140 includes when electric expansion valve target aperture is greater than preset open
When spending threshold value, testing result lacks for amount of refrigerant.
Specifically, after temperature control equipment refrigerant lacks, compared to the detection parameters of normal refrigeration dose, system
Delivery temperature can be got higher, and system discharge pressure can be lower, and pressure of inspiration(Pi) can be lower, and suction temperature can be got higher, and discharge superheat becomes
High, suction superheat is got higher, and above all of variation can all cause same as a result, i.e. to control electronics swollen for temperature control equipment
Swollen valve opening increases, if the amount that temperature control equipment refrigerant lacks is more than certain ratio (for example, can be set to 80%),
There was only electronic expansion valve opening at this time is more than a certain threshold value, that is, preset aperture threshold value (for example, can be set to electric expansion valve most
The 80% of big aperture), the amount of refrigerant such as delivery temperature, pressure at expulsion, pressure of inspiration(Pi), degree of superheat of system detection parameters ability
In normal range (NR)；Or even if electronic expansion valve opening has been more than this threshold value, system parameter cannot still be in normal range (NR),
When this occurs, system alarm can control, be based on this, it is possible to determine that temperature control equipment lacks refrigerant.
In one embodiment, as shown in fig. 7, step S140 includes step S142 and step S144.
Step S142: when electric expansion valve target aperture is greater than preset aperture threshold value, electric expansion valve target is detected
Aperture is greater than the duration of preset aperture threshold value.
Specifically, when judging for the first time, after electric expansion valve target aperture is greater than preset aperture threshold value, i.e., electronics is swollen
Swollen valve target aperture, which is greater than preset aperture threshold value, just can make amount of refrigerant detection parameters in preset parameter area, determine
System lacks refrigerant, and detection electric expansion valve target aperture is greater than the duration of preset aperture threshold value.
Step S144: when duration reaches the first preset duration, testing result lacks for amount of refrigerant, and unit
Refrigerant is lacked before booting.
It specifically, can be with if continuous first preset duration of electric expansion valve target aperture is more than preset aperture threshold value
Refrigerant is lacked before booting labeled as unit, reference frame can be provided for maintenance.
In another embodiment, as shown in figure 8, step S140 includes when electric expansion valve target aperture is less than or equal to
When preset aperture threshold value, testing result is that amount of refrigerant is normal.
Specifically, amount of refrigerant can be made to examine when electric expansion valve target aperture does not need to reach preset aperture threshold value
Parameter is surveyed in preset parameter area, illustrates that the refrigeration dose of temperature control equipment is normal.
It in one embodiment, further include step S150 and step S160 as shown in figure 9, after step S140.
Step S150: when detecting that electric expansion valve target aperture is greater than preset aperture threshold value, electronic expansion is detected
Valve target aperture is greater than the duration of preset aperture threshold value.
Specifically, normally such as initial stage judgement, it but also will continue to be detected during the continuous operation in later period, if detecting
When electric expansion valve target aperture is greater than preset aperture threshold value, then illustrate that amount of refrigerant lacks, detects electric expansion valve mesh
Mark the duration that aperture is greater than preset aperture threshold value.
Step S160: when duration reaches the second preset duration, testing result be unit in the process of running gradually
Lack refrigerant.
Specifically, continuous second preset duration of the target aperture of electric expansion valve is more than aperture threshold values, determines that temperature is adjusted
Equipment lacks refrigerant, while unit can be marked gradually to lack refrigerant in the process of running.In operational process by comparing
The variation of practical electric expansion valve target aperture and preset aperture threshold size has lacked refrigeration before can distinguishing unit operation
Lack refrigerant in agent or operational process, reference frame can be provided for maintenance.
In a detailed embodiment, as shown in Figure 10, when judging for the first time, if electric expansion valve target aperture connects
The continuous t1 time is more than preset aperture threshold value, and decision-making system lacks refrigerant, while can mark to have lacked before booting
Few refrigerant；If initial stage judgement is normal, but during the continuous operation in later period, when the continuous t2 of the target aperture of electric expansion valve
Between be more than preset aperture threshold values, decision-making system lacks refrigerant, while unit can be marked gradually to lack in the process of running
Refrigerant.
The amount of refrigerant detection method of above-mentioned temperature control equipment, based on electric expansion valve in air-conditioning system operational process
Aperture judges whether system lacks refrigerant compared with preset aperture threshold size, it is possible to prevente effectively from due to electronic expansion
The drawbacks of valve opening adjustment leads to other judgment method accuracies, and without increasing cost, it is simple, reliable；Operational process
In by comparing practical electronic expansion valve opening and preset aperture threshold size variation, unit can be distinguished and run preceding lacked
Lack refrigerant in few refrigerant, operational process, reference frame can be provided for maintenance, refrigerant judgement can also be lacked with other
Method combines；By the detection of continuous time, it is possible to prevente effectively from erroneous judgement caused by being fluctuated due to instantaneous aperture；And in temperature
The adjustment equipment design phase is spent, whether can rationally provide reference frame for system electronic expansion valve type selecting, i.e., system is normal
Occurs few refrigerant alarm within the scope of refrigerant, then it is believed that electric expansion valve type selecting is unreasonable.
It should be understood that although each step in the flow chart of Fig. 1-3,6-9 is successively shown according to the instruction of arrow,
But these steps are not that the inevitable sequence according to arrow instruction successively executes.Unless expressly state otherwise herein, these
There is no stringent sequences to limit for the execution of step, these steps can execute in other order.Moreover, in Fig. 1-3,6-9
At least part step may include multiple sub-steps perhaps these sub-steps of multiple stages or stage be not necessarily
Synchronization executes completion, but can execute at different times, and the execution sequence in these sub-steps or stage also need not
Be so successively carry out, but can at least part of the sub-step or stage of other steps or other steps in turn or
Person alternately executes.
In one embodiment, as shown in figure 11, a kind of amount of refrigerant detection device of temperature control equipment is provided,
Device includes that detection parameters obtain module 110, electronic expansion valve opening control module 120, the determination of electric expansion valve target aperture
Module 130 and detection module 140, in which:
Detection parameters obtain module 110, for obtaining amount of refrigerant detection parameters；Electronic expansion valve opening control module
120, for controlling signal, electronics according to amount of refrigerant detection parameters and preset parameter area output electronic expansion valve opening
Expansion valve opening control signal is used to control the aperture of electric expansion valve, so that amount of refrigerant detection parameters are in preset parameter
In range；Electric expansion valve target aperture determining module 130, for obtaining amount of refrigerant detection parameters in preset parameter model
The aperture of electric expansion valve when enclosing interior obtains electric expansion valve target aperture；Detection module 140, for according to electric expansion valve
Target aperture and preset aperture threshold value carry out amount of refrigerant and detect to obtain testing result.
In one embodiment, electronic expansion valve opening control module includes presetting when amount of refrigerant detection parameters are less than
Parameter area when, output electronic expansion valve opening reduces control signal, and electronic expansion valve opening reduces control signal for controlling
The aperture of electric expansion valve processed reduces.
In another embodiment, electronic expansion valve opening control module includes when amount of refrigerant detection parameters are greater than in advance
If parameter area when, output electronic expansion valve opening increase control signal, electronic expansion valve opening increase control signal be used for
The aperture for controlling electric expansion valve increases.
In one embodiment, detection module include when electric expansion valve target aperture be greater than preset aperture threshold value when,
Testing result lacks for amount of refrigerant.
In one embodiment, detection module includes duration detection unit and detection unit；Duration detection is single
Member is for when electric expansion valve target aperture is greater than preset aperture threshold value, detection electric expansion valve target aperture to be greater than default
Aperture threshold value duration；Detection unit is used for when duration reaches the first preset duration, and testing result is refrigeration
Agent content lacks, and unit has lacked refrigerant before booting.
In another embodiment, detection module includes when electric expansion valve target aperture is less than or equal to preset aperture
When threshold value, testing result is that amount of refrigerant is normal.
It in one embodiment, further include duration detection module and amount of refrigerant detection mould after detection module
Block, duration detection module are used for when detecting that electric expansion valve target aperture is greater than preset aperture threshold value, detection electricity
Sub- expansion valve target aperture is greater than the duration of preset aperture threshold value；Amount of refrigerant detection module is for working as duration
When reaching the second preset duration, testing result is that unit gradually lacks refrigerant in the process of running.
The amount of refrigerant detection device of above-mentioned temperature control equipment, based on electric expansion valve in air-conditioning system operational process
Aperture judges whether system lacks refrigerant compared with preset aperture threshold size, it is possible to prevente effectively from due to electronic expansion
The drawbacks of valve opening adjustment leads to other judgment method accuracies, and without increasing cost, it is simple, reliable；Operational process
In by comparing practical electronic expansion valve opening and preset aperture threshold size variation, unit can be distinguished and run preceding lacked
Lack refrigerant in few refrigerant, operational process, reference frame can be provided for maintenance, refrigerant judgement can also be lacked with other
Method combines；By the detection of continuous time, it is possible to prevente effectively from erroneous judgement caused by being fluctuated due to instantaneous aperture；And in temperature
The adjustment equipment design phase is spent, whether can rationally provide reference frame for system electronic expansion valve type selecting, i.e., system is normal
Occurs few refrigerant alarm within the scope of refrigerant, then it is believed that electric expansion valve type selecting is unreasonable.
The specific restriction of amount of refrigerant detection device about temperature control equipment may refer to above for temperature
The restriction of the amount of refrigerant detection method of adjustment equipment, details are not described herein.The amount of refrigerant of above-mentioned temperature control equipment
Modules in detection device can be realized fully or partially through software, hardware and combinations thereof.Above-mentioned each module can be hard
Part form is embedded in or independently of in the processor in computer equipment, can also be stored in computer equipment in a software form
Memory in, execute the corresponding operation of above modules in order to which processor calls.
In one embodiment, a kind of computer readable storage medium is provided, computer program is stored thereon with, is calculated
Machine program performs the steps of when being executed by processor obtains amount of refrigerant detection parameters；It is detected and is joined according to amount of refrigerant
Several and preset parameter area output electronic expansion valve opening controls signal, and electronic expansion valve opening control signal is for controlling electricity
The aperture of sub- expansion valve, so that amount of refrigerant detection parameters are in preset parameter area；Obtain amount of refrigerant detection ginseng
The aperture of electric expansion valve, obtains electric expansion valve target aperture when number is in preset parameter area；According to electric expansion valve
Target aperture and preset aperture threshold value carry out amount of refrigerant and detect to obtain testing result.
In one embodiment, it when computer program is executed by processor, according to amount of refrigerant detection parameters and presets
Parameter area output electronic expansion valve opening control signal, comprising: when amount of refrigerant detection parameters be less than preset parameter
When range, output electronic expansion valve opening reduces control signal, and electronic expansion valve opening reduces control signal for controlling electronics
The aperture of expansion valve reduces.
In one embodiment, it when computer program is executed by processor, according to amount of refrigerant detection parameters and presets
Parameter area output electronic expansion valve opening control signal, comprising: when amount of refrigerant detection parameters be greater than preset parameter
When range, output electronic expansion valve opening increases control signal, and electronic expansion valve opening increases control signal for controlling electronics
The aperture of expansion valve increases.
In one embodiment, it when computer program is executed by processor, according to electric expansion valve target aperture and presets
Aperture threshold value carry out amount of refrigerant detect to obtain testing result, comprising: when electric expansion valve target aperture be greater than it is preset
When aperture threshold value, testing result lacks for amount of refrigerant.
In one embodiment, it when computer program is executed by processor, is preset when electric expansion valve target aperture is greater than
Aperture threshold value when, testing result lacks for amount of refrigerant, comprising: when electric expansion valve target aperture be greater than preset aperture
When threshold value, detection electric expansion valve target aperture is greater than the duration of preset aperture threshold value；When duration reaches first
When preset duration, testing result lacks for amount of refrigerant, and unit has lacked refrigerant before booting.
In one embodiment, it when computer program is executed by processor, according to electric expansion valve target aperture and presets
Aperture threshold value carry out amount of refrigerant detect to obtain testing result, comprising: when electric expansion valve target aperture is less than or equal to
When preset aperture threshold value, testing result is that amount of refrigerant is normal.
In one embodiment, when computer program is executed by processor, when electric expansion valve target aperture is less than or waits
When preset aperture threshold value, testing result is after amount of refrigerant is normal, further includes: is detecting electric expansion valve target
When aperture is greater than preset aperture threshold value, detection electric expansion valve target aperture is greater than the duration of preset aperture threshold value；
When duration reaches the second preset duration, testing result is that unit gradually lacks refrigerant in the process of running.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Instruct relevant hardware to complete by computer program, computer program to can be stored in a non-volatile computer readable
It takes in storage medium, the computer program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, this Shen
Please provided by any reference used in each embodiment to memory, storage, database or other media, may each comprise
Non-volatile and/or volatile memory.Nonvolatile memory may include read-only memory (ROM), programming ROM
(PROM), electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM) or flash memory.Volatile memory may include
Random access memory (RAM) or external cache.By way of illustration and not limitation, RAM is available in many forms,
Such as static state RAM (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate sdram (DDRSDRAM), enhancing
Type SDRAM (ESDRAM), synchronization link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM
(RDRAM), direct memory bus dynamic ram (DRDRAM) and memory bus dynamic ram (RDRAM) etc..
In one embodiment, as shown in figure 12, the amount of refrigerant detection system of a kind of temperature control equipment, including place
Device 210 and electric expansion valve 220 are managed, processor 210 connects electric expansion valve 220, and processor 210 is for obtaining amount of refrigerant
Detection parameters；220 opening control signal of electric expansion valve is exported according to amount of refrigerant detection parameters and preset parameter area；
The aperture of electric expansion valve 220, obtains electric expansion valve when obtaining amount of refrigerant detection parameters in preset parameter area
220 target apertures；And amount of refrigerant is carried out according to 220 target aperture of electric expansion valve and preset aperture threshold value and is detected
To testing result；Electric expansion valve 220 controls electric expansion valve for 220 opening control signal of electric expansion valve based on the received
220 aperture, so that amount of refrigerant detection parameters are in preset parameter area.
The specific restriction of amount of refrigerant detection system about temperature control equipment may refer to above for temperature
The restriction of the amount of refrigerant detection method of adjustment equipment, details are not described herein.
The amount of refrigerant detection system of above-mentioned temperature control equipment, based on electric expansion valve in air-conditioning system operational process
Aperture judges whether system lacks refrigerant compared with preset aperture threshold size, it is possible to prevente effectively from due to electronic expansion
The drawbacks of valve opening adjustment leads to other judgment method accuracies, and without increasing cost, it is simple, reliable；Operational process
In by comparing practical electronic expansion valve opening and preset aperture threshold size variation, unit can be distinguished and run preceding lacked
Lack refrigerant in few refrigerant, operational process, reference frame can be provided for maintenance, refrigerant judgement can also be lacked with other
Method combines；By the detection of continuous time, it is possible to prevente effectively from erroneous judgement caused by being fluctuated due to instantaneous aperture；And in temperature
The adjustment equipment design phase is spent, whether can rationally provide reference frame for system electronic expansion valve type selecting, i.e., system is normal
Occurs few refrigerant alarm within the scope of refrigerant, then it is believed that electric expansion valve type selecting is unreasonable.
A kind of air-conditioning, the amount of refrigerant detection system including above-mentioned temperature control equipment.
Specific about air-conditioning limits the amount of refrigerant detection method that may refer to above for temperature control equipment
Restriction, details are not described herein.
Above-mentioned air-conditioning, based on electronic expansion valve opening in air-conditioning system operational process and preset aperture threshold size ratio
Compared with, judge whether system lacks refrigerant, it is possible to prevente effectively from due to electronic expansion valve opening adjustment lead to other judgment methods
The drawbacks of accuracy, and without increasing cost, it is simple, reliable；It is opened in operational process by comparing practical electric expansion valve
Degree and the variation of preset aperture threshold size can be distinguished and lack refrigerant before unit operation, lacked system in operational process
Cryogen can provide reference frame for maintenance, can also lack in conjunction with refrigerant judgment method with other；Pass through the inspection of continuous time
It surveys, it is possible to prevente effectively from erroneous judgement caused by being fluctuated due to instantaneous aperture；And in temperature control equipment design phase, Ke Yiwei
Whether system electronic expansion valve type selecting rationally provides reference frame, i.e. few refrigerant announcement occurs within the scope of normal refrigerant in system
It is alert, then it is believed that electric expansion valve type selecting is unreasonable.
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (12)
1. a kind of amount of refrigerant detection method of temperature control equipment, which comprises
Obtain amount of refrigerant detection parameters；
Signal is controlled according to the amount of refrigerant detection parameters and preset parameter area output electronic expansion valve opening, it is described
Electronic expansion valve opening control signal is used to control the aperture of electric expansion valve, so that amount of refrigerant detection parameters are preset
In parameter area；
The aperture of the electric expansion valve, obtains when obtaining the amount of refrigerant detection parameters in the preset parameter area
To electric expansion valve target aperture；
Amount of refrigerant is carried out according to the electric expansion valve target aperture and preset aperture threshold value to detect to obtain testing result.
2. the method according to claim 1, wherein described according to the amount of refrigerant detection parameters and default
Parameter area output electronic expansion valve opening control signal, comprising:
When amount of refrigerant detection parameters are less than preset parameter area, output electronic expansion valve opening reduces control signal,
The electronic expansion valve opening reduces the aperture reduction that control signal is used to control electric expansion valve.
3. the method according to claim 1, wherein described according to the amount of refrigerant detection parameters and default
Parameter area output electronic expansion valve opening control signal, comprising:
When amount of refrigerant detection parameters are greater than preset parameter area, output electronic expansion valve opening increases control signal,
The electronic expansion valve opening increases the aperture increasing that control signal is used to control electric expansion valve.
4. the method according to claim 1, wherein described according to the electric expansion valve target aperture and default
Aperture threshold value carry out amount of refrigerant detect to obtain testing result, comprising:
When the electric expansion valve target aperture is greater than preset aperture threshold value, testing result lacks for amount of refrigerant.
5. according to the method described in claim 4, it is characterized in that, described preset when the electric expansion valve target aperture is greater than
Aperture threshold value when, testing result lacks for amount of refrigerant, comprising:
When the electric expansion valve target aperture is greater than the preset aperture threshold value, detects the electric expansion valve target and open
Degree is greater than the duration of the preset aperture threshold value；
When the duration reaches the first preset duration, the testing result lacks for amount of refrigerant, and unit is being opened
Refrigerant is lacked before machine.
6. the method according to claim 1, wherein described according to the electric expansion valve target aperture and default
Aperture threshold value carry out amount of refrigerant detect to obtain testing result, comprising:
When the electric expansion valve target aperture be less than or equal to preset aperture threshold value when, testing result be amount of refrigerant just
Often.
7. according to the method described in claim 6, it is characterized in that, described when the electric expansion valve target aperture is less than or waits
When preset aperture threshold value, testing result is after amount of refrigerant is normal, further includes:
When detecting that the electric expansion valve target aperture is greater than the preset aperture threshold value, the electric expansion valve is detected
Target aperture is greater than the duration of the preset aperture threshold value；
When the duration reaches the second preset duration, the testing result is that unit gradually lacks system in the process of running
Cryogen.
8. the method according to claim 1, wherein the amount of refrigerant detection parameters are delivery temperature or mistake
Temperature,
When the amount of refrigerant detection parameters are delivery temperature, preset parameter area is preset exhaust temperature ranges；
When the amount of refrigerant detection parameters are the degree of superheat, preset parameter area is preset degree of superheat range.
9. a kind of amount of refrigerant detection device of temperature control equipment, which is characterized in that described device includes:
Detection parameters obtain module, for obtaining amount of refrigerant detection parameters；
Electronic expansion valve opening control module, for being exported according to the amount of refrigerant detection parameters and preset parameter area
Electronic expansion valve opening controls signal, and the electronic expansion valve opening control signal is used to control the aperture of electric expansion valve, with
Make amount of refrigerant detection parameters in preset parameter area；
Electric expansion valve target aperture determining module, for obtaining the amount of refrigerant detection parameters in the preset parameter
The aperture of electric expansion valve when in range obtains electric expansion valve target aperture；
Detection module, for carrying out amount of refrigerant detection according to the electric expansion valve target aperture and preset aperture threshold value
Obtain testing result.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program
Step described in any item of the claim 1 to 8 is realized when being executed by processor.
11. a kind of amount of refrigerant detection system of temperature control equipment, which is characterized in that including processor and electronic expansion
Valve, the processor connect the electric expansion valve,
The processor is for method according to any one of claim 1 to 8 output electronic expansion valve opening control letter
Number and obtain testing result；
The electric expansion valve is opened for the electronic expansion valve opening control signal control electric expansion valve based on the received
Degree, so that amount of refrigerant detection parameters are in preset parameter area.
12. a kind of air-conditioning, which is characterized in that the amount of refrigerant detection including temperature control equipment as claimed in claim 11
System.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811158489.XA CN109282420A (en) | 2018-09-30 | 2018-09-30 | Amount of refrigerant detection method, device, system and the air-conditioning of temperature control equipment |
| PCT/CN2018/120623 WO2020062597A1 (en) | 2018-09-30 | 2018-12-12 | Method, device and system for detecting refrigerant content of temperature regulation apparatus, and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811158489.XA CN109282420A (en) | 2018-09-30 | 2018-09-30 | Amount of refrigerant detection method, device, system and the air-conditioning of temperature control equipment |
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| CN109282420A true CN109282420A (en) | 2019-01-29 |
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| CN201811158489.XA Pending CN109282420A (en) | 2018-09-30 | 2018-09-30 | Amount of refrigerant detection method, device, system and the air-conditioning of temperature control equipment |
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| WO (1) | WO2020062597A1 (en) |
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| CN111271814A (en) * | 2019-07-22 | 2020-06-12 | 宁波奥克斯电气股份有限公司 | Refrigerant flow control method and device and air conditioner |
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| WO2020062597A1 (en) | 2020-04-02 |
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