CN110332743A - Cooler and its refrigerant detection method, device, system - Google Patents
Cooler and its refrigerant detection method, device, system Download PDFInfo
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- CN110332743A CN110332743A CN201910635278.9A CN201910635278A CN110332743A CN 110332743 A CN110332743 A CN 110332743A CN 201910635278 A CN201910635278 A CN 201910635278A CN 110332743 A CN110332743 A CN 110332743A
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- pressure
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- pressure data
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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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
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
This application involves a kind of cooler and its refrigerant detection method, device, systems, and the current pressure data on condenser gas gathering manifold by obtaining cooler are analyzed to obtain the corresponding pressure divergence value of current pressure data according to preset pressure database.When pressure divergence value is greater than or equal to predetermined deviation value, it then says and thinks cooler the case where there are coolant leakages at this time, the warning message of the coolant leakage of control output at this time, to inform user's cooler in time, there are the risks of coolant leakage, in order to which user overhauls in time.Through the above scheme, as long as when the current pressure data that detection obtains condenser gas gathering manifold have greatly changed, the warning message that can export corresponding coolant leakage informs user.To which user can learn in time when coolant leakage occurs, the case where main component of lathe is come to harm due to cold water temperature upheaval is efficiently avoided, has the advantages that detect highly reliable.
Description
Technical field
This application involves refrigeration technology fields, more particularly to a kind of cooler and its refrigerant detection method, device, are
System.
Background technique
Cooler is a kind of machine for reaching refrigeration effect by both vapor compression or Absorption heat-transformer, generally in matched machine
It is used on bed, provides cold energy for lathe main component, cool down to the main component of lathe, to be effectively protected lathe
The main components such as main shaft guarantee the normal operation of lathe.Therefore, when lathe works, guarantee that the stable operation of cooler seems outstanding
It is important.
The abnormal conditions of coolant leakage often occur in the process of running for cooler, and traditional refrigerant detection method only has
When Shi Caihui quotes the information of low-voltage variation to coolant leakage to a certain extent.Due to that can not learn the abnormal feelings of coolant leakage in time
Condition, it is easy to the main component of lathe be caused to come to harm due to cold water temperature upheaval.Therefore traditional refrigerant detection method tool
There is the shortcomings that detection poor reliability.
Summary of the invention
Based on this, it is necessary to aiming at the problem that traditional refrigerant detection method detects poor reliability, provide a kind of cooler
And its refrigerant detection method, device, system.
A kind of refrigerant detection method of cooler, which comprises obtain working as the condenser gas gathering manifold of cooler
Preceding pressure data；Pressure divergence value, the preset pressure number are obtained according to the current pressure data and preset pressure database
The normal pressure data of the corresponding condenser gas gathering manifold in cooler stable operation are contained according to inventory；When the pressure
When deviation is greater than or equal to predetermined deviation value, the warning message of coolant leakage is exported.
In one embodiment, described to obtain pressure divergence value according to the current pressure data and preset pressure database
The step of after, further includes: when the pressure divergence value be less than predetermined deviation value when, control cooler run with current state.
In one embodiment, the step of current pressure data of the condenser gas gathering manifold for obtaining cooler, packet
It includes: using preset duration as the period, periodically acquiring the current pressure data of the condenser gas gathering manifold of cooler.
In one embodiment, described under the preset pressure database varying environment temperature and different compressors frequency
The normal pressure data of condenser gas gathering manifold, it is described to obtain pressure according to the current pressure data and preset pressure database
The step of deviation, comprising: obtain environment temperature corresponding with the current pressure data and compressor frequency；According to described
Environment temperature and the compressor frequency are matched with preset pressure database, are obtained described cold in cooler stable operation
The normal pressure data of condenser gas gathering manifold；It is calculated, is obtained according to the current pressure data and the normal pressure data
To pressure divergence value.
In one embodiment, described to be calculated according to the current pressure data and the normal pressure data, it obtains
The step of to pressure divergence value, comprising:Wherein, X is pressure divergence value, P1For current pressure number
According to P is normal pressure data.
In one embodiment, described to obtain pressure divergence value according to the current pressure data and preset pressure database
The step of before, further includes: when cooler stable operation, acquire the mark under varying environment temperature and different compressors frequency
Quasi- pressure data establishes corresponding preset pressure database.
A kind of refrigerant detection device of cooler, described device includes: current pressure data acquisition module, cold for obtaining
But the current pressure data of the condenser gas gathering manifold of machine；Pressure divergence value computing module, for according to the current pressure number
Pressure divergence value is obtained according to preset pressure database, the preset pressure database purchase has in cooler stable operation,
The normal pressure data of the condenser gas gathering manifold at varying environment temperature and different compressors frequency；Pressure divergence value point
Module is analysed, for exporting the warning message of coolant leakage when the pressure divergence value is greater than or equal to predetermined deviation value.
A kind of refrigerant detection system of cooler, the system comprises: pressure-detecting device and controller, the pressure inspection
The condenser gas gathering manifold that device is set to cooler is surveyed, the controller connects the pressure-detecting device, the pressure inspection
It surveys device and send for detecting the current pressure Data Concurrent of the condenser gas gathering manifold to the controller, the controller is used
According to above-mentioned method progress refrigerant detection.
It in one embodiment, further include ambient temperature detection device, the ambient temperature detection device connects the control
Device processed.
A kind of cooler, including compressor, condenser, evaporator and above-mentioned refrigerant detection system, the condenser and
The compressor is connected by condenser gas gathering manifold, and the condenser connects the evaporator, the compression by process duct
Machine connects the evaporator, and the outlet of the evaporator and the import of the evaporator are respectively used to connecting machine tool, the pressure
Detection device is set to the condenser gas gathering manifold of cooler.
In one embodiment, be provided in the process duct between the condenser and the evaporator first filter and
Electric expansion valve, the electric expansion valve connect the controller.
In one embodiment, it is provided with connecting pipe between the condenser gas gathering manifold and the process duct, and
Bypass solenoid valve and the second filter are respectively arranged in the connecting pipe, the bypass solenoid valve connects the controller.
Above-mentioned cooler and its refrigerant detection method, device, system, by obtain cooler condenser gas gathering manifold on
Current pressure data, analyzed to obtain the corresponding pressure divergence value of current pressure data according to preset pressure database.When
When pressure divergence value is greater than or equal to predetermined deviation value, then says and think cooler the case where there are coolant leakages at this time, this time control
The warning message of system output coolant leakage, to inform user's cooler in time, there are the risks of coolant leakage, in order to user
It is overhauled in time.Through the above scheme, if when detection obtain condenser gas gathering manifold current pressure data occur it is larger
Variation when, can export corresponding coolant leakage warning message inform user.To user's energy when coolant leakage occurs
It is enough to learn in time, the case where main component of lathe is come to harm due to cold water temperature upheaval is efficiently avoided, is had
Detect highly reliable advantage.
Detailed description of the invention
Fig. 1 is the refrigerant detection method flow diagram of cooler in an embodiment；
Fig. 2 is the refrigerant detection method flow diagram of cooler in another embodiment；
Fig. 3 is the refrigerant detection method flow diagram of cooler in another embodiment；
Fig. 4 is the refrigerant detection method flow diagram of cooler in another embodiment；
Fig. 5 is the refrigerant detection method flow chart of cooler in an embodiment；
Fig. 6 is the refrigerant structure of the detecting device schematic diagram of cooler in an embodiment；
Fig. 7 is the refrigerant structure of the detecting device schematic diagram of cooler in another embodiment；
Fig. 8 is the refrigerant detection system structure of cooler in an embodiment；
Fig. 9 is Refrigerator structure schematic diagram in an embodiment.
Specific embodiment
The application in order to facilitate understanding is described more fully the application below with reference to relevant drawings.In attached drawing
Give the preferred embodiment of the application.But the application can realize in many different forms, however it is not limited to herein
Described embodiment.On the contrary, purpose of providing these embodiments is keeps the understanding to disclosure of this application more saturating
It is thorough comprehensive.
Referring to Fig. 1, a kind of refrigerant detection method of cooler, comprising: step S200, step S300 and step S400.
Step S200 obtains the current pressure data of the condenser gas gathering manifold of cooler.
Specifically, condenser belongs to one kind of heat exchanger, gas or steam can be transformed into liquid, by the heat in pipe
It is passed in a manner of cracking in air near pipe.Condenser working process is an exothermic process, so condenser temperature
All it is higher, thus is typically provided with condensation fan around condenser and radiating treatment is carried out to condenser.Cooler
It is connected between condenser and compressor by condenser gas gathering manifold, compressor is a kind of low-pressure gas to be promoted to high pressure gas
Driven fluid machinery, it from air intake duct sucking low-temp low-pressure refrigerant gas, by motor operate band piston to it
After being compressed, to the refrigerant gas of exhaust pipe discharge high temperature and pressure, power is provided for refrigeration cycle.If cooler stablizes fortune
Row, there is no the abnormal conditions such as coolant leakage, under identical environment temperature, when compressor frequency (the i.e. operation of compressor
Frequency) timing, the pressure of condenser gas collecting tube will fluctuation up and down to a very small extent.Therefore, by detecting condenser
The variation degree of the pressure data of condenser gas collecting tube between compressor, the judgement whether Lai Jinhang refrigerant leaks,
Realize the refrigerant detection of cooler.
The acquisition that pressure data is carried out by the way that corresponding pressure-detecting device is arranged on condenser gas gathering manifold, will cool down
The pressure data collected in real time in machine operational process is denoted as current pressure data, and is sent to controller and carries out at analysis
Reason.It should be pointed out that the type of pressure-detecting device be not it is unique, specifically can be pressure sensor etc., as long as
Can accurate detection obtain the current pressure data of condenser gas gathering manifold.It is appreciated that since condenser gas collection is total
Pressure in pipe is larger, and pressure sensor uses the better high-pressure pressure sensor of high pressure resistant effect.
Step S300 obtains pressure divergence value according to current pressure data and preset pressure database.
Specifically, preset pressure database purchase has the mark of the corresponding condenser gas gathering manifold in cooler stable operation
Quasi- pressure data.Goal pressure data are when coolant leakage not occurring and cooler works normally, and condenser gas collection is total
The normal pressure data that pipe should have.Pressure divergence value characterizes under identical running environment, and coolant leakage and cooler do not occur
The pressure data of condenser gas gathering manifold when normal operation and the departure degree of current pressure data, if departure degree is allowing
In the range of, then under current operating environment, coolant leakage does not occur explanation for cooler.When controller acquires current work
Make under state after corresponding current pressure data, it is only necessary to by current pressure data and target pressure corresponding in pressure data library
Force data compares and analyzes, it can obtains corresponding pressure divergence value.
Step S400 exports the warning message of coolant leakage when pressure divergence value is greater than or equal to predetermined deviation value.
Specifically, predetermined deviation value indicates condenser gas gathering manifold when coolant leakage and cooler normal operation not occurring
Pressure data and current pressure data between maximum deviation degree threshold value.More than the threshold value then indicate current pressure data with
Normal pressure data difference is larger, when pressure divergence value is greater than or equal to predetermined deviation value, indicates that cooler has occurred at this time
Coolant leakage.The case where being come to harm in order to avoid the main component of lathe due to cold water temperature upheaval, at this time controller
The corresponding warning message of coolant leakage will be exported, in order to which user can make maintenance process in time.In one embodiment,
When coolant leakage occurs, cooler continues to run, and is only through the warning message of controller output coolant leakage.Another
In a embodiment, it can also be in the case where coolant leakage occurs, while controller exports the warning message of coolant leakage, control
It is out of service that device processed can also control compressor, so that cooler be made to stop working.
In one embodiment, cooler is provided with warning device, when pressure divergence value is greater than or equal to predetermined deviation value
When, controller will send corresponding warning message to alarm, and control warning device issues alarm signal and informs user.It can be with
Understand, the type of warning device is not that uniquely, can be the alarms such as sound, light, per family may be used as long as informing is facilitated to use.It should
, it is noted that the size of predetermined deviation value is not uniquely, as long as can reasonably react whether refrigerant in cooler occurs
The state of leakage.For example, in one embodiment, predetermined deviation value is 10%, i.e., when the pressure divergence value that analysis obtains
When more than or equal to 10%, indicate that coolant leakage has occurred in current cooler.It is appreciated that in other embodiments, presetting inclined
Difference may be arranged as other sizes, such as 9%, 9.5%, 10.5% or 11% etc..
Referring to Fig. 2, in one embodiment, after step S300, this method further includes step S500.
Step S500, when pressure divergence value is less than predetermined deviation value, control cooler is run with current state.
Specifically, controller obtains pressure divergence value according to the current pressure data and preset pressure database of acquisition, and
And when pressure divergence value and predetermined deviation value are compared and analyzed, it is also possible to pressure divergence value occur less than predetermined deviation value
Situation.When pressure divergence value is less than predetermined deviation value, expression differs between current pressure data and normal pressure data at this time
Smaller, coolant leakage does not occur for cooling system at this time, and controller is only needed to control cooler and run with the currently state of transporting
?.It is appreciated that in one embodiment, when pressure divergence value is less than predetermined deviation value, controller controls cooler to work as
After preceding operating status operation, controller can also return to the current pressure for executing the condenser gas gathering manifold for obtaining cooler simultaneously
The operation of data, carry out next time current pressure data analysis, in order to when the state of cooler changes can and
Shi get Zhi.
Referring to Fig. 3, in one embodiment, step S200 includes step S210.
Step S210 periodically acquires the current pressure of the condenser gas gathering manifold of cooler using preset duration as the period
Data.
Specifically, in order to guarantee timely detect to obtain when coolant leakage occurs for cooler, to condenser gas collection
The analysis of the current pressure data of general pipeline is real-time perfoming.In the present embodiment, periodically real using preset duration as the period
When obtain the current pressure data of condenser gas gathering manifold, current pressure data of every acquisition will do it corresponding analysis
Processing judges whether generation coolant leakage according to pressure divergence value, and concrete analysis process is similar to the above, and details are not described herein.
It should be pointed out that the size of preset duration is not uniquely, as long as the pressure of condenser gas gathering manifold can reasonably be reacted
Power variation.
Referring to Fig. 3, in one embodiment, preset pressure database varying environment temperature and different compressors frequency
The normal pressure data of lower condenser gas gathering manifold, step S300 include step S310, step S320 and step S330.
Step S310 obtains environment temperature corresponding with current pressure data and compressor frequency.
Specifically, the current pressure data of condenser gas gathering manifold are and the environment temperature of cooler local environment and adopt
Compressor frequency when collecting current pressure data is corresponding.Cooler is provided with corresponding temperature collection device, environment
Temperature collecting device is connected with controller, while controller obtains current pressure data, can also obtain corresponding compressor
Frequency and corresponding environment temperature is obtained by ambient temperature detection device, in order to be matched to environment temperature in subsequent operation
With normal pressure data of compressor frequency when consistent.And for compressor frequency, since the running frequency of compressor is logical
Cross what controller was adjusted, therefore, while the current pressure data acquisition for carrying out condenser gas gathering manifold, controller is also
Corresponding compressor frequency at this time can be directly obtained.It is appreciated that setting position and the type of ambient temperature detection device
It is not uniquely, as long as the acquisition of the environment temperature of cooler can be carried out reasonably.For example, in one embodiment
In, the acquisition of environment temperature is carried out by environment temperature sensing package.
Step S320 is matched with preset pressure database according to environment temperature and compressor frequency, is obtained in cooling
The normal pressure data of condenser gas gathering manifold when machine stable operation.
Specifically, preset pressure database purchase has between multiple groups environment temperature, compressor frequency and normal pressure data
Three-dimensional data, controller only needs to acquire corresponding environment temperature and compression while obtaining current pressure data
Unit frequency.Then environment temperature is matched with compressor frequency with preset pressure database, it can obtain working as front ring
At border temperature and compressor frequency, cooler is there is no when coolant leakage and normal work, the pressure of condenser gas gathering manifold
The theoretical value of data, as normal pressure data.
Step S330 is calculated according to current pressure data and normal pressure data, obtains pressure divergence value.
Specifically, after obtaining normal pressure data, controller will be according to current pressure data and normal pressure number
According to analytical calculation is carried out, to obtain extent of deviation of the current pressure data relative to normal pressure data, as pressure divergence
Value.According to the size of pressure divergence value, it can carry out the judgement operation whether cooler refrigerant leaks.
In one embodiment, it is calculated according to current pressure data and normal pressure data, obtains pressure divergence value
The step of, comprising:Wherein, X is pressure divergence value, P1For current pressure data, P is standard pressure
Force data.
Specifically, in the present embodiment, carry out pressure divergence value calculating when, using make difference analysis by the way of, first when
Preceding pressure data subtracts each other with normal pressure data, and the difference for obtaining the two does ratio with normal pressure data later, by what is obtained
Ratio, which takes absolute value, obtains final pressure divergence value.It is appreciated that in other embodiments, other way can also be used
The calculating of pressure divergence value is carried out, as long as pressure divergence value, which can reasonably react current pressure data, deviates normal pressure data
Degree.
Referring to Fig. 4, in one embodiment, before step S300, this method further includes step S100.
Step S100 acquires the mark under varying environment temperature and different compressors frequency when cooler stable operation
Quasi- pressure data establishes corresponding preset pressure database.
Specifically, in the present embodiment, in cooler stable operation, when coolant leakage does not occur by acquisition cooler
Normal pressure data at varying environment temperature and different compressors frequency, will establish environment temperature, compressor frequency and mark
Three-dimensional corresponding relationship between quasi- pressure data three, as preset pressure database.When controller obtains environment temperature and pressure
After contracting unit frequency, corresponding normal pressure data can be directly obtained by preset pressure database.In cooler, if
Cooler operates normally, and when environment temperature and compressor frequency must be, the pressure data acquired on condenser gas gathering manifold will
It can float to a very small extent.The present embodiment passes through the normal pressure under acquisition varying environment temperature and different compressors frequency
Data establish corresponding preset pressure database, and the matching degree in obtained pressure data library and cooler is high, further ensure
The accuracy of refrigerant detection method.It is appreciated that in other embodiments, since the cooler of same type is every at runtime
Parameter is substantially coincident, therefore preset pressure database can also be directly entered by user, and this method has easy to operate
Advantage.
Each embodiment of the application in order to facilitate understanding, explains the application below with reference to specifically embodiment
It is bright.Referring to Fig. 5, being established first by acquiring the normal pressure data under different environment temperature and different compressors frequency
Three-dimensional corresponding relationship between environment temperature, compressor frequency and normal pressure data three, as preset pressure database.When
When cooler (i.e. diagram unit) booting operation, the compressor start operation of cooler, controller with m second for the period, it is periodical
Acquisition current pressure data P1, environment temperature and compressor frequency, and according to the environment temperature and compressor frequency of acquisition
Obtain the normal pressure data P under identical environment temperature and compressor frequency.Controller will be according to current pressure data
It is calculated with corresponding normal pressure data, calculation formula are as follows:Wherein, X is pressure divergence
Value, P1For current pressure data, P is normal pressure data.Last controller by the X being calculated and preset pressure deviation into
Row comparative analysis, the size of preset pressure deviation is 10% at this time.When X be greater than or equal to 10%, then illustrate cooler at this time
Refrigerant leak, controller will export the warning message of coolant leakage to inform user at this time, but cooler is still at this time
Operation is not shut down so.And when X is less than 10%, illustrate that the current pressure data of condenser gas gathering manifold at this time are in normal fluctuation
Coolant leakage does not occur for range, cooler, and controller only needs to control cooler to be continued to run with current operating conditions.
The refrigerant detection method of above-mentioned cooler, the current pressure number on condenser gas gathering manifold by obtaining cooler
According to being analyzed to obtain the corresponding pressure divergence value of current pressure data according to preset pressure database.When pressure divergence value is big
In or when being equal to predetermined deviation value, then says and thinks cooler the case where there are coolant leakages at this time, control exports refrigerant and lets out at this time
The warning message of leakage, to inform user's cooler in time, there are the risks of coolant leakage, in order to which user overhauls in time.
Through the above scheme, as long as can when the current pressure data that detection obtains condenser gas gathering manifold have greatly changed
The warning message for exporting corresponding coolant leakage informs user.To which when coolant leakage occurs, user can learn in time have
Effect ground avoids the case where main component of lathe is come to harm due to cold water temperature upheaval, has detection highly reliable
Advantage.
Referring to Fig. 6, a kind of refrigerant detection device of cooler, including current pressure data acquisition module 200, pressure are inclined
Difference calculating module 300 and pressure divergence value analysis module 400.
Current pressure data acquisition module 200 is used to obtain the current pressure data of the condenser gas gathering manifold of cooler.
Specifically, condenser belongs to one kind of heat exchanger, gas or steam can be transformed into liquid, by the heat in pipe
It is passed in a manner of cracking in air near pipe.Condenser working process is an exothermic process, so condenser temperature
All it is higher, thus is typically provided with condensation fan around condenser and radiating treatment is carried out to condenser.Cooler
It is connected between condenser and compressor by condenser gas gathering manifold, compressor is a kind of low-pressure gas to be promoted to high pressure gas
Driven fluid machinery, it from air intake duct sucking low-temp low-pressure refrigerant gas, by motor operate band piston to it
After being compressed, to the refrigerant gas of exhaust pipe discharge high temperature and pressure, power is provided for refrigeration cycle.If cooler stablizes fortune
Row, there is no the abnormal conditions such as coolant leakage, under identical environment temperature, when compressor frequency (the i.e. operation of compressor
Frequency) timing, the pressure of condenser gas collecting tube will fluctuation up and down to a very small extent.Therefore, by detecting condenser
The variation degree of the pressure data of condenser gas collecting tube between compressor, the judgement whether Lai Jinhang refrigerant leaks,
Realize the refrigerant detection of cooler.
The acquisition that pressure data is carried out by the way that corresponding pressure-detecting device is arranged on condenser gas gathering manifold, will cool down
The pressure data collected in real time in machine operational process is denoted as current pressure data, and is sent to controller and carries out at analysis
Reason.It should be pointed out that the type of pressure-detecting device be not it is unique, specifically can be pressure sensor etc., as long as
Can accurate detection obtain the current pressure data of condenser gas gathering manifold.It is appreciated that since condenser gas collection is total
Pressure in pipe is larger, and pressure sensor uses the better high-pressure pressure sensor of high pressure resistant effect.
Pressure divergence value computing module 300 is used to obtain pressure divergence according to current pressure data and preset pressure database
Value.
Specifically, preset pressure database purchase has in cooler stable operation, varying environment temperature and different pressures
The normal pressure data of condenser gas gathering manifold under contracting unit frequency.Goal pressure data are that coolant leakage and cold is not occurring
But when machine works normally, normal pressure data that condenser gas gathering manifold should have.Pressure divergence value characterizes identical operation ring
Under border, the pressure data and current pressure data of condenser gas gathering manifold when coolant leakage and cooler operate normally do not occur
Departure degree, if departure degree in allowed limits, illustrates that under current operating environment, refrigerant does not occur for cooler
Leakage.After controller acquires corresponding current pressure data under current working status, it is only necessary to by current pressure number
It is compared and analyzed according to goal pressure data corresponding in pressure data library, it can obtain corresponding pressure divergence value.
Pressure divergence value analysis module 400 is used to export refrigerant when pressure divergence value is greater than or equal to predetermined deviation value
The warning message of leakage.
Specifically, predetermined deviation value indicates condenser gas gathering manifold when coolant leakage and cooler normal operation not occurring
Pressure data and current pressure data between maximum deviation degree threshold value.More than the threshold value then indicate current pressure data with
Normal pressure data difference is larger, when pressure divergence value is greater than or equal to predetermined deviation value, indicates that cooler has occurred at this time
Coolant leakage.The case where being come to harm in order to avoid the main component of lathe due to cold water temperature upheaval, at this time controller
The corresponding warning message of coolant leakage will be exported, in order to which user can make maintenance process in time.In one embodiment,
When coolant leakage occurs, cooler continues to run, and is only through the warning message of controller output coolant leakage.Another
In a embodiment, it can also be in the case where coolant leakage occurs, while controller exports the warning message of coolant leakage, control
It is out of service that device processed can also control compressor, so that cooler be made to stop working.
In one embodiment, pressure divergence value analysis module 400 is also used to be less than predetermined deviation value when pressure divergence value
When, control cooler is run with current state.Concrete operation method is similar with the embodiment of above method part, no longer superfluous
It states.
In one embodiment, current pressure data acquisition module 200 is also used to periodically obtain using preset duration as the period
Take the current pressure data of the condenser gas gathering manifold of cooler.The embodiment class of concrete operation method and above method part
Seemingly, it is repeating no more.
In one embodiment, pressure divergence value computing module 300 is also used to obtain corresponding with current pressure data
Environment temperature and compressor frequency；It is matched, is obtained with preset pressure database according to environment temperature and compressor frequency
The normal pressure data of condenser gas gathering manifold when cooler stable operation；According to current pressure data and normal pressure data into
Row calculates, and obtains pressure divergence value.Concrete operation method is similar with the embodiment of above method part, is repeating no more.
Referring to Fig. 7, in one embodiment, the refrigerant detection device of cooler further includes Database module 100.
Database module 100 is used for when cooler stable operation, acquires varying environment temperature and different compressions
Normal pressure data under unit frequency establish corresponding preset pressure database.
Specifically, in the present embodiment, in cooler stable operation, when coolant leakage does not occur by acquisition cooler
Normal pressure data at varying environment temperature and different compressors frequency, will establish environment temperature, compressor frequency and mark
Three-dimensional corresponding relationship between quasi- pressure data three, as preset pressure database.When controller obtains environment temperature and pressure
After contracting unit frequency, corresponding normal pressure data can be directly obtained by preset pressure database.In cooler, if
Cooler operates normally, and when environment temperature and compressor frequency must be, the pressure data acquired on condenser gas gathering manifold will
It can float to a very small extent.The present embodiment passes through the normal pressure under acquisition varying environment temperature and different compressors frequency
Data establish corresponding preset pressure database, and the matching degree in obtained pressure data library and cooler is high, further ensure
The accuracy of refrigerant detection method.It is appreciated that in other embodiments, since the cooler of same type is every at runtime
Parameter is substantially coincident, therefore preset pressure database can also be directly entered by user, and this method has easy to operate
Advantage.
The refrigerant detection device of above-mentioned cooler, the current pressure number on condenser gas gathering manifold by obtaining cooler
According to being analyzed to obtain the corresponding pressure divergence value of current pressure data according to preset pressure database.When pressure divergence value is big
In or when being equal to predetermined deviation value, then says and thinks cooler the case where there are coolant leakages at this time, control exports refrigerant and lets out at this time
The warning message of leakage, to inform user's cooler in time, there are the risks of coolant leakage, in order to which user overhauls in time.
Through the above scheme, as long as can when the current pressure data that detection obtains condenser gas gathering manifold have greatly changed
The warning message for exporting corresponding coolant leakage informs user.To which when coolant leakage occurs, user can learn in time have
Effect ground avoids the case where main component of lathe is come to harm due to cold water temperature upheaval, has detection highly reliable
Advantage.
Referring to Fig. 8, a kind of refrigerant detection system of cooler, comprising: pressure-detecting device 10 and controller 20, pressure
Detection device 10 is set to the condenser gas gathering manifold of cooler, and controller 20 connects pressure-detecting device 10, pressure detecting dress
It sets 10 and send for detecting the current pressure Data Concurrent of condenser gas gathering manifold to controller 20, controller 20 is used for according to above-mentioned
Method carry out refrigerant detection.
Specifically, condenser belongs to one kind of heat exchanger, gas or steam can be transformed into liquid, by the heat in pipe
It is passed in a manner of cracking in air near pipe.Condenser working process is an exothermic process, so condenser temperature
All it is higher, thus is typically provided with condensation fan around condenser and radiating treatment is carried out to condenser.Cooler
It is connected between condenser and compressor by condenser gas gathering manifold, compressor is a kind of low-pressure gas to be promoted to high pressure gas
Driven fluid machinery, it from air intake duct sucking low-temp low-pressure refrigerant gas, by motor operate band piston to it
After being compressed, to the refrigerant gas of exhaust pipe discharge high temperature and pressure, power is provided for refrigeration cycle.If cooler stablizes fortune
Row, there is no the abnormal conditions such as coolant leakage, under identical environment temperature, when compressor frequency (the i.e. operation of compressor
Frequency) timing, the pressure of condenser gas collecting tube will fluctuation up and down to a very small extent.Therefore, by detecting condenser
The variation degree of the pressure data of condenser gas collecting tube between compressor, the judgement whether Lai Jinhang refrigerant leaks,
Realize the refrigerant detection of cooler.
The acquisition that pressure data is carried out by the way that corresponding pressure-detecting device 10 is arranged on condenser gas gathering manifold, will be cold
But the pressure data collected in real time in machine operational process is denoted as current pressure data, and is sent to controller 20 and is analyzed
Processing.It should be pointed out that the type of pressure-detecting device 10 is not that uniquely, specifically can be pressure sensor etc.,
As long as can accurate detection obtain the current pressure data of condenser gas gathering manifold.It is appreciated that due to condenser collection
Pressure in gas general pipeline is larger, and pressure sensor uses the better high-pressure pressure sensor of high pressure resistant effect.
Pressure divergence value is obtained according to current pressure data and preset pressure database.Preset pressure database purchase has
When cooler stable operation, the normal pressure number of condenser gas gathering manifold at varying environment temperature and different compressors frequency
According to.Goal pressure data are when coolant leakage not occurring and cooler works normally, and condenser gas gathering manifold should have
Standby normal pressure data.Pressure divergence value characterizes under identical running environment, and coolant leakage does not occur and cooler operates normally
When condenser gas gathering manifold pressure data and current pressure data departure degree, if departure degree is in the range of permission
Interior, then under current operating environment, coolant leakage does not occur explanation for cooler.When controller 20 acquires work at present shape
Under state after corresponding current pressure data, it is only necessary to by current pressure data and goal pressure number corresponding in pressure data library
According to comparing and analyzing, it can obtain corresponding pressure divergence value.
When pressure divergence value is greater than or equal to predetermined deviation value, the warning message of coolant leakage is exported.Predetermined deviation value
Indicate the pressure data and current pressure data of condenser gas gathering manifold when coolant leakage and cooler normal operation not occurring
Between maximum deviation degree threshold value.Then indicate that current pressure data differ larger with normal pressure data more than the threshold value, when
When pressure divergence value is greater than or equal to predetermined deviation value, indicate that coolant leakage has occurred in cooler at this time.In order to avoid lathe
The case where main component is come to harm due to cold water temperature upheaval, controller 20 will export the corresponding of coolant leakage at this time
Warning message, in order to which user can make maintenance process in time.In one embodiment, when coolant leakage occurs, cooler
It continues to run, is only through the warning message that controller 20 exports coolant leakage.In another embodiment, it can also be
In the case where coolant leakage occurs, while controller 20 exports the warning message of coolant leakage, controller 20 can also control pressure
Contracting machine is out of service, so that cooler be made to stop working.
Referring to Fig. 8, further including ambient temperature detection device 30, ambient temperature detection device 30 in one embodiment
Connect controller 20.
Specifically, the current pressure data of condenser gas gathering manifold are and the environment temperature of cooler local environment and adopt
Compressor frequency when collecting current pressure data is corresponding.Cooler is provided with corresponding temperature collection device, environment
Temperature collecting device is connected with controller 20, while controller 20 obtains current pressure data, can also obtain corresponding pressure
Contracting unit frequency and corresponding environment temperature is obtained by ambient temperature detection device 30, in order to be matched to ring in subsequent operation
Normal pressure data of the border temperature with compressor frequency when consistent.And for compressor frequency, due to the running frequency of compressor
It is to be adjusted by controller 20, therefore, while the current pressure data acquisition for carrying out condenser gas gathering manifold,
Controller 20 can also directly obtain corresponding compressor frequency at this time.It is appreciated that the setting of ambient temperature detection device 30
Position and type are not uniquely, as long as the acquisition of the environment temperature of cooler can be carried out reasonably.For example,
In one embodiment, the acquisition of environment temperature is carried out by environment temperature sensing package.
The refrigerant detection system of above-mentioned cooler, the current pressure number on condenser gas gathering manifold by obtaining cooler
According to being analyzed to obtain the corresponding pressure divergence value of current pressure data according to preset pressure database.When pressure divergence value is big
In or when being equal to predetermined deviation value, then says and thinks cooler the case where there are coolant leakages at this time, control exports refrigerant and lets out at this time
The warning message of leakage, to inform user's cooler in time, there are the risks of coolant leakage, in order to which user overhauls in time.
Through the above scheme, as long as can when the current pressure data that detection obtains condenser gas gathering manifold have greatly changed
The warning message for exporting corresponding coolant leakage informs user.To which when coolant leakage occurs, user can learn in time have
Effect ground avoids the case where main component of lathe is come to harm due to cold water temperature upheaval, has detection highly reliable
Advantage.
Referring to Fig. 9, a kind of cooler, including compressor 40, condenser 50, evaporator 60 and above-mentioned refrigerant detection system
System, condenser 50 are connected with compressor 40 by condenser gas gathering manifold, and condenser 50 connects evaporator 60, pressure by process duct
Contracting machine 40 connects evaporator 60, and the outlet of evaporator 60 and the import of evaporator 60 are respectively used to connecting machine tool, pressure detecting dress
Set the 10 condenser gas gathering manifolds for being set to cooler.
Specifically, condenser 50 belongs to one kind of heat exchanger, gas or steam can be transformed into liquid, by the heat in pipe
Amount is passed in the air near pipe in a manner of cracking.50 course of work of condenser is an exothermic process, so condenser
50 temperature are all higher, thus are typically provided with condensation fan around condenser 50 and carry out at heat dissipation to condenser 50
Reason.The condensed fluid of low temperature carries out heat exchange by evaporator 60, with extraneous air, and gasification heat absorption achievees the effect that refrigeration.
Evaporator 60 is mainly made of heating room and vaporization chamber two parts, and heating room is provided to liquid evaporates required heat, is promoted
Liquid boiling vaporization, vaporization chamber are kept completely separate gas-liquid two-phase.
It is connected between the condenser 50 and compressor 40 of cooler by condenser gas gathering manifold, compressor 40 is a kind of incites somebody to action
Low-pressure gas is promoted to the driven fluid machinery of high pressure gas, it leads to from the refrigerant gas of air intake duct sucking low-temp low-pressure
Cross motor operating band piston it is compressed after, to exhaust pipe discharge high temperature and pressure refrigerant gas, be refrigeration cycle
Power is provided.If cooler stable operation, there is no the abnormal conditions such as coolant leakage to work as pressure under identical environment temperature
40 frequency of contracting machine (i.e. the running frequency of a compressor 40) timing, the pressure of 50 gas collecting tube of condenser will be to a very small extent
Fluctuation up and down.Therefore, pass through the variation of the pressure data of 50 gas collecting tube of condenser between detection condenser 50 and compressor 40
Degree, the judgement whether Lai Jinhang refrigerant leaks, i.e. the refrigerant detection of realization cooler.
The acquisition that pressure data is carried out by the way that corresponding pressure-detecting device 10 is arranged on condenser gas gathering manifold, will be cold
But the pressure data collected in real time in machine operational process is denoted as current pressure data, and is sent to controller 20 and is analyzed
Processing.It should be pointed out that the type of pressure-detecting device 10 is not that uniquely, specifically can be pressure sensor etc.,
As long as can accurate detection obtain the current pressure data of condenser gas gathering manifold.It is appreciated that due to condenser collection
Pressure in gas general pipeline is larger, and pressure sensor uses the better high-pressure pressure sensor of high pressure resistant effect.
Pressure divergence value is obtained according to current pressure data and preset pressure database.Preset pressure database purchase has
When cooler stable operation, the normal pressure number of condenser gas gathering manifold under 40 frequency of varying environment temperature and different compressors
According to.Goal pressure data are when coolant leakage not occurring and cooler works normally, and condenser gas gathering manifold should have
Standby normal pressure data.Pressure divergence value characterizes under identical running environment, and coolant leakage does not occur and cooler operates normally
When condenser gas gathering manifold pressure data and current pressure data departure degree, if departure degree is in the range of permission
Interior, then under current operating environment, coolant leakage does not occur explanation for cooler.When controller 20 acquires work at present shape
Under state after corresponding current pressure data, it is only necessary to by current pressure data and goal pressure number corresponding in pressure data library
According to comparing and analyzing, it can obtain corresponding pressure divergence value.
When pressure divergence value is greater than or equal to predetermined deviation value, the warning message of coolant leakage is exported.Predetermined deviation value
Indicate the pressure data and current pressure data of condenser gas gathering manifold when coolant leakage and cooler normal operation not occurring
Between maximum deviation degree threshold value.Then indicate that current pressure data differ larger with normal pressure data more than the threshold value, when
When pressure divergence value is greater than or equal to predetermined deviation value, indicate that coolant leakage has occurred in cooler at this time.In order to avoid lathe
The case where main component is come to harm due to cold water temperature upheaval, controller 20 will export the corresponding of coolant leakage at this time
Warning message, in order to which user can make maintenance process in time.In one embodiment, when coolant leakage occurs, cooler
It continues to run, is only through the warning message that controller 20 exports coolant leakage.In another embodiment, it can also be
In the case where coolant leakage occurs, while controller 20 exports the warning message of coolant leakage, controller 20 can also control pressure
Contracting machine 40 is out of service, so that cooler be made to stop working.
Referring to Fig. 9, in one embodiment, the first mistake is provided in the process duct between condenser 50 and evaporator 60
Filter 72 and electric expansion valve 71, electric expansion valve 71 connect 20 (not shown) of controller.
Specifically, filter (filter) is indispensable a kind of device on pumped (conveying) medium pipeline, is typically mounted on and subtracts
Pressure valve, relief valve, Valve for keeping constant water level, the import end equipment of the square other equipment of work filter.Filter by cylinder, stainless steel filtering net,
Blowdown part, transmission device and electrical control division are grouped as.Water to be processed is after the filter cylinder of strainer screen, impurity quilt
Stop, when needing to clean, as long as dismountable filter cylinder is taken out, is reloaded after processing, therefore, working service is extremely
It is convenient.Electric expansion valve 71 controls the voltage or electric current being applied on expansion valve using the electric signal for being conditioned parameter generation, into
And achieve the purpose that adjust liquid supply rate.By being provided with first filter in the process duct between condenser 50 and evaporator 60
72 and electric expansion valve 71, it ensure that refrigerant safe and stable transmission between evaporator 60 and condenser 50.
Referring to Fig. 9, in one embodiment, connecting pipe is provided between condenser gas gathering manifold and process duct, and
And bypass solenoid valve 81 and the second filter 82 are respectively arranged in connecting pipe, bypass solenoid valve 81 connects the (figure of controller 20
Do not show).
Specifically, in the present embodiment, by the way that by-pass line is arranged between condenser gas gathering manifold and process duct, pass through
Controller 20 detects the pressure at 50 both ends of condenser, then goes out difference according to the calculation of pressure tested, then by controller 20
It is compared the decision way of output with preset value according to calculated difference, is to increase aperture or reduce to open with control valve
Degree, thus to adjust flow, to achieve the purpose that 50 pressure at two ends of balancing condenser.It should be pointed out that in one embodiment
In, the import of compressor and evaporator is respectively arranged with different temperature sensing packages and pressure detector from exit, and setting position can
With in such as Fig. 9 P (pressure detector) and T (temperature sensing package) shown in, thus in real time carry out cooler different location parameter adopt
Collection and analysis ensure that cooler being capable of stable operation.
Above-mentioned cooler, the current pressure data on condenser gas gathering manifold by obtaining cooler, according to default pressure
It is analyzed to obtain the corresponding pressure divergence value of current pressure data in force data library.It is preset partially when pressure divergence value is greater than or equal to
When difference, then says and think cooler the case where there are coolant leakages at this time, the warning message of the coolant leakage of control output at this time, from
And inform user's cooler in time there are the risks of coolant leakage, in order to which user overhauls in time.Through the above scheme, only
It can export corresponding refrigerant when the current pressure data that detection obtains condenser gas gathering manifold have greatly changed and let out
The warning message of leakage informs user.To which user can learn in time when coolant leakage occurs, lathe is efficiently avoided
The case where main component is come to harm due to cold water temperature upheaval has the advantages that detection is highly reliable.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, 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
The limitation to claim therefore cannot be interpreted as.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 refrigerant detection method of cooler, which is characterized in that the described method includes:
Obtain the current pressure data of the condenser gas gathering manifold of cooler；
Pressure divergence value, the preset pressure database purchase are obtained according to the current pressure data and preset pressure database
There are the normal pressure data of the corresponding condenser gas gathering manifold in cooler stable operation；
When the pressure divergence value is greater than or equal to predetermined deviation value, the warning message of coolant leakage is exported.
2. refrigerant detection method according to claim 1, which is characterized in that described according to the current pressure data and pre-
If pressure data library obtained after the step of pressure divergence value, further includes:
When the pressure divergence value is less than predetermined deviation value, control cooler is run with current state.
3. refrigerant detection method according to claim 1, which is characterized in that the condenser gas collection for obtaining cooler is total
The step of current pressure data of pipe, comprising:
Using preset duration as the period, the current pressure data of the condenser gas gathering manifold of cooler are periodically acquired.
4. refrigerant detection method according to claim 3, which is characterized in that the preset pressure database varying environment temperature
The normal pressure data of the condenser gas gathering manifold, described according to the current pressure number under degree and different compressors frequency
According to the step of obtaining pressure divergence value with preset pressure database, comprising:
Obtain environment temperature corresponding with the current pressure data and compressor frequency；
It is matched according to the environment temperature and the compressor frequency with preset pressure database, obtains stablizing in cooler
The normal pressure data of condenser gas gathering manifold when operation；
It is calculated according to the current pressure data and the normal pressure data, obtains pressure divergence value.
5. refrigerant detection method according to claim 4, which is characterized in that described according to the current pressure data and institute
State the step of normal pressure data are calculated, obtain pressure divergence value, comprising:
Wherein, X is pressure divergence value, P1For current pressure data, P is normal pressure data.
6. refrigerant detection method according to claim 1, which is characterized in that described according to the current pressure data and pre-
If pressure data library obtained before the step of pressure divergence value, further includes:
When cooler stable operation, the normal pressure data under varying environment temperature and different compressors frequency are acquired, are built
Found corresponding preset pressure database.
7. a kind of refrigerant detection device of cooler, which is characterized in that described device includes:
Current pressure data acquisition module, the current pressure data of the condenser gas gathering manifold for obtaining cooler；
Pressure divergence value computing module, for obtaining pressure divergence according to the current pressure data and preset pressure database
Value, the preset pressure database purchase have in cooler stable operation, varying environment temperature and different compressors frequency
Under the condenser gas gathering manifold normal pressure data；
Pressure divergence value analysis module, for when the pressure divergence value is greater than or equal to predetermined deviation value, output refrigerant to be let out
The warning message of leakage.
8. a kind of refrigerant detection system of cooler, which is characterized in that the system comprises: pressure-detecting device and controller,
The pressure-detecting device is set to the condenser gas gathering manifold of cooler, and the controller connects the pressure-detecting device,
The current pressure Data Concurrent that the pressure-detecting device is used to detect the condenser gas gathering manifold is sent to the control
Device, the controller carry out refrigerant detection for method according to claim 1-6.
9. refrigerant detection system according to claim 8, which is characterized in that it further include ambient temperature detection device, it is described
Ambient temperature detection device connects the controller.
10. a kind of cooler, which is characterized in that including described in compressor, condenser, evaporator and claim any one of 8-9
Refrigerant detection system, the condenser connected with the compressor by condenser gas gathering manifold, and the condenser passes through work
Skill pipe connects the evaporator, and the compressor connects the evaporator, the outlet of the evaporator and the evaporator into
Mouth is respectively used to connecting machine tool, and the pressure-detecting device is set to the condenser gas gathering manifold of cooler.
11. cooler according to claim 10, which is characterized in that the technique between the condenser and the evaporator
First filter and electric expansion valve are provided on pipe, the electric expansion valve connects the controller.
12. cooler according to claim 11, which is characterized in that the condenser gas gathering manifold and the process duct it
Between be provided with connecting pipe, and bypass solenoid valve and the second filter are respectively arranged in the connecting pipe, the bypass
Solenoid valve connects the controller.
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| CN113695980A (en) * | 2021-08-06 | 2021-11-26 | 珠海格力智能装备有限公司 | Purification mechanism, cooling machine and purification detection method |
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