CN114576793A - Refrigerating system and refrigerant leakage detection method and device thereof, equipment and storage medium - Google Patents
Refrigerating system and refrigerant leakage detection method and device thereof, equipment and storage medium Download PDFInfo
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- 238000001514 detection method Methods 0.000 title claims abstract description 45
- 238000005057 refrigeration Methods 0.000 claims abstract description 104
- 238000000034 method Methods 0.000 claims description 16
- 238000012423 maintenance Methods 0.000 abstract description 43
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- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
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- 230000005856 abnormality Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
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- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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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Abstract
The invention discloses a refrigerating system and a refrigerant leakage detection method, a refrigerant leakage detection device and a refrigerant leakage detection storage medium thereof, wherein the refrigerant leakage detection method comprises the steps of firstly accurately calculating the current refrigerant flow of a compressor, then subtracting the current refrigerant flow of the compressor from the standard refrigerant flow of the compressor under the current working condition to obtain a difference value, and then determining the refrigerant leakage condition of the refrigerating system according to the difference value. Therefore, the refrigerant leakage detection method of the refrigeration system can accurately judge the leakage degree of the refrigerant in the refrigeration system, further provide accurate maintenance information for maintenance personnel and the like, and provide help for maintenance of the refrigerant leakage problem in the refrigeration system.
Description
Technical Field
The present invention relates to the field of air conditioning equipment technologies, and in particular, to a refrigerant leakage detection method for a refrigeration system, a refrigerant leakage detection device for a refrigeration system, a refrigeration apparatus, a refrigeration system, and a computer-readable storage medium.
Background
The refrigerant is the guarantee that the air conditioner can normally run to generate a refrigeration effect, if the refrigerant leaks, the energy efficiency of a refrigeration system is reduced, the refrigeration effect is also reduced, and the leakage of the refrigerant can harm human health and environmental ecology. Since the refrigerant leakage fault in the refrigeration system frequently occurs due to the immaturity of the current refrigeration technology or the improper use of users, it is necessary to detect whether the refrigerant of the refrigeration system leaks or not with emphasis.
In the related art, most of the refrigerant leakage detection methods only use a single parameter to determine whether the system leaks, such as the discharge temperature, the compressor power, etc. Due to the complex multi-coupling of the refrigeration system, not only is the accuracy low, but also misjudgment often occurs with this method.
After the refrigerant leakage is judged by the related art detection method, the specific degree of the leakage is still not detected, and the amount of refrigerant present in the refrigeration system is unclear, which causes a great trouble in refilling the refrigerant.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, an object of the present invention is to provide a refrigerant leakage detection method for a refrigeration system, which can accurately determine the leakage degree of a refrigerant in the refrigeration system, so as to provide accurate maintenance information to maintenance personnel and the like, and provide help for maintenance of the refrigerant leakage problem in the refrigeration system.
The second objective of the present invention is to provide a refrigerant leakage detection device for a refrigeration system.
A third object of the invention is to propose a refrigeration system.
A fourth object of the invention is to propose a refrigeration device.
A fifth object of the present invention is to propose a computer-readable storage medium.
In order to achieve the above object, a first aspect of the present invention provides a refrigerant leakage detecting method for a refrigeration system, the method including: acquiring the current refrigerant flow of a compressor and the standard refrigerant flow of the compressor under the current working condition; acquiring a difference value between the current refrigerant flow and the standard refrigerant flow; and determining the refrigerant leakage condition of the refrigerating system according to the difference value.
The refrigerant leakage detection method of the embodiment of the invention firstly accurately calculates the current refrigerant flow of the compressor, then makes a difference between the current refrigerant flow of the compressor and the standard refrigerant flow of the compressor under the current working condition to obtain a difference value, and then determines the refrigerant leakage condition of the refrigeration system according to the difference value. Therefore, the refrigerant leakage detection method of the refrigeration system can accurately judge the leakage degree of the refrigerant in the refrigeration system, further provide accurate maintenance information for maintenance personnel and the like, and provide help for maintenance of the refrigerant leakage problem in the refrigeration system.
In some embodiments of the present invention, the determining the refrigerant leakage condition of the refrigeration system according to the difference includes: and acquiring the refrigerant leakage rate of the refrigerating system according to the difference value.
In some embodiments of the present invention, the determining a refrigerant leakage condition of the refrigeration system according to the difference further includes: and if the difference value is greater than a first threshold value and lasts for a first preset time, or the difference value is less than or equal to the first threshold value, the refrigerant leakage rate is greater than a second threshold value and keeps unchanged for a second preset time, or the difference value is less than or equal to the first threshold value, and the refrigerant leakage rate continuously increases within the second preset time, determining that refrigerant leakage occurs in the refrigeration system.
In some embodiments of the present invention, after determining that the refrigerant leakage occurs in the refrigeration system, the method further includes: and sending the refrigerant leakage rate to an after-sale terminal of the refrigeration system.
In some embodiments of the present invention, the obtaining the current refrigerant flow rate of the compressor includes: collecting operating parameters and ambient temperature of a compressor, wherein the operating parameters comprise the exhaust temperature, the exhaust pressure and the working frequency of the compressor; according to the operation parameters and the environment temperature, fitting by using a fitting equation to obtain the return air temperature and the return air pressure of the compressor; and acquiring the current refrigerant flow according to the exhaust temperature, the exhaust pressure, the return temperature and the return pressure of the compressor and a compressor ten-coefficient model.
In some embodiments of the present invention, the standard refrigerant flow rate is obtained according to a refrigerant flow rate base plane of the compressor under the current working condition.
In order to achieve the above object, an embodiment of a second aspect of the present invention provides a refrigerant leakage detection device for a refrigeration system, where the detection device includes an obtaining module, configured to obtain a current refrigerant flow rate of a compressor and a standard refrigerant flow rate of the compressor under a current working condition, and obtain a difference between the current refrigerant flow rate and the standard refrigerant flow rate; and the determining module is used for determining the refrigerant leakage condition of the refrigerating system according to the difference value.
The refrigerant leakage detection device of the refrigeration system comprises an acquisition module and a determination module, wherein the current refrigerant flow of the compressor is accurately calculated, the acquisition module is used for acquiring the refrigerant flow and a difference value obtained by the difference between the current refrigerant flow of the compressor and the standard refrigerant flow of the compressor under the current working condition, and then the determination module is used for determining the refrigerant leakage condition of the refrigeration system according to the difference value. Therefore, the refrigerant leakage detection device of the refrigeration system can accurately judge the leakage degree of the refrigerant in the refrigeration system, further provide accurate maintenance information for maintenance personnel and the like, and provide help for maintenance of the refrigerant leakage problem in the refrigeration system.
In order to achieve the above object, a refrigeration apparatus according to a third aspect of the present invention includes the refrigerant leakage detection device in the above embodiments.
According to the refrigeration equipment provided by the embodiment of the invention, the refrigerant leakage degree in the refrigeration system can be accurately judged through the refrigerant leakage detection device in the embodiment, so that accurate maintenance information is provided for maintenance personnel and the like, and help is provided for maintenance of the refrigerant leakage problem in the refrigeration system.
In order to achieve the above object, a fourth aspect of the present invention provides a refrigeration system, which includes a memory, a processor, and a refrigerant leakage detection program stored in the memory and operable on the processor, where when the processor executes the refrigerant leakage detection program, the refrigerant leakage detection method described in the foregoing embodiments is implemented.
The refrigerating system comprises the memory and the processor, wherein the processor executes the refrigerant leakage detection program stored in the memory, can accurately judge the leakage degree of the refrigerant in the refrigerating system, further provides accurate maintenance information for maintenance personnel and the like, and provides help for the maintenance of the refrigerant leakage problem in the refrigerating system.
To achieve the above object, a fifth embodiment of the present invention provides a computer-readable storage medium, on which a refrigerant leakage detection program is stored, and the refrigerant leakage detection program, when executed by a processor, implements the refrigerant leakage detection method according to the above embodiments.
The computer readable storage medium of the embodiment of the invention can accurately judge the leakage degree of the refrigerant in the refrigeration system by executing the refrigerant leakage detection program stored in the processor through the processor, thereby providing accurate maintenance information for maintenance personnel and the like and providing help for the maintenance of the refrigerant leakage problem in the refrigeration system.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a flow chart illustrating a refrigerant leakage detection method of a refrigeration system according to an embodiment of the present invention;
fig. 2 is a flow chart illustrating a refrigerant leakage detection method of a refrigeration system according to another embodiment of the present invention;
FIG. 3 is a flow chart of a refrigerant leak detection method for a refrigeration system according to an embodiment of the present invention;
fig. 4 is a block diagram illustrating a refrigerant leakage detecting apparatus of a refrigeration system according to an embodiment of the present invention;
fig. 5 is a block diagram of a structure of a refrigerating apparatus according to an embodiment of the present invention;
fig. 6 is a block diagram of a refrigeration system according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following describes a refrigeration system, a refrigerant leakage detection method and device, equipment and a storage medium thereof according to an embodiment of the invention with reference to the accompanying drawings.
Fig. 1 is a flow chart illustrating a refrigerant leakage detection method of a refrigeration system according to an embodiment of the present invention.
As shown in fig. 1, the present invention provides a refrigerant leakage detection method for a refrigeration system, which includes the following steps:
and S10, acquiring the current refrigerant flow of the compressor and the standard refrigerant flow of the compressor under the current working condition.
Specifically, the current refrigerant flow rate of the compressor may be obtained through various methods, such as directly obtaining the current refrigerant flow rate through a sensor, or indirectly obtaining the current refrigerant flow rate through calculation according to the working data of the compressor. Similarly, the standard refrigerant flow under the current working condition of the compressor may also be obtained in various ways, for example, the standard refrigerant flow corresponding to the current working condition is obtained according to a table look-up of the current working condition of the compressor, or various parameters of the current working condition of the compressor are obtained, and then the standard refrigerant flow under the current working condition of the compressor is calculated on line by using a calculation formula of the standard refrigerant flow.
In this embodiment, the obtaining manner of the current refrigerant flow rate of the compressor and the standard refrigerant flow rate of the compressor under the current working condition is not specifically limited, and only the obtained result, that is, the current refrigerant flow rate of the compressor and the standard refrigerant flow rate of the compressor under the current working condition, is limited.
In some embodiments of the present invention, as shown in fig. 2, the obtaining of the current refrigerant flow rate of the compressor includes the following steps:
s201, collecting operation parameters of the compressor and ambient temperature, wherein the operation parameters comprise the exhaust temperature, the exhaust pressure and the working frequency of the compressor.
Specifically, in this embodiment, a sensor originally provided in the refrigeration system may be used to acquire an operation parameter of the compressor, where the operation parameter of the compressor may include a discharge temperature of the compressor, a discharge pressure of the compressor, and an operating frequency of the compressor, and the sensor may also acquire the operation parameter of the compressor, an ambient temperature where the current refrigeration system is located, and the like. That is, the discharge temperature and discharge pressure of the compressor can be directly obtained, for example, from the point inspection parameters.
And S202, fitting by using a fitting equation according to the operation parameters and the environment temperature to obtain the return air temperature and the return air pressure of the compressor.
Specifically, the fitting equation in this embodiment may be preset, and the setting process of the fitting equation is to use multiple sets of compressor operating parameters and ambient temperature as input parameters, and then train the return air temperature and return air pressure of the corresponding multiple sets of compressors as output parameters, so as to obtain the fitting equation. After the fitting equation is determined, the operating parameters of the compressor and the ambient temperature can be obtained and used as the input of the fitting equation, and the return air temperature and the return air pressure of the output compressor can be calculated. It should be noted that the parameters obtained by fitting the equation may be understood as parameters acquired by the virtual sensor, that is, the return air temperature and the return air pressure of the compressor in this embodiment are parameters acquired by the virtual sensor.
And S203, acquiring the current refrigerant flow according to the exhaust temperature, the exhaust pressure, the return air temperature and the return air pressure of the compressor and the compressor ten-coefficient model.
Specifically, after obtaining relevant parameters such as the exhaust temperature and the exhaust pressure of the compressor, the current refrigerant flow of the compressor is calculated according to the obtained relevant parameters of the compressor and a compressor ten-coefficient calculation equation. It should be noted that the compressor ten-coefficient calculation equation is a calculation equation known to those skilled in the art, and therefore the present embodiment may not describe the calculation equation in detail.
It should be noted that, in the present embodiment, the current refrigerant flow rate of the compressor is calculated according to a plurality of parameters of the compressor, and compared with the related art that only according to a single parameter, the calculated refrigerant flow rate is more accurate, so that whether the refrigeration system leaks can be more accurately determined.
In some embodiments of the present invention, the standard refrigerant flow rate is obtained according to a refrigerant flow rate base plane of the compressor under the current working condition.
Specifically, in this embodiment, the refrigerant flow base surface may be modeled according to data of normal laboratory operation, in which reference is made to the fitting process of the fitting equation in the above embodiment, and the refrigerant flow base surface model in this embodiment may be trained to obtain relevant parameters in the refrigerant flow base surface model by using laboratory data as input data and output data. More specifically, various working conditions of the compressor can be used as input data of the refrigerant flow base level model, then the refrigerant flow is used as output data, and the refrigerant flow base level model can be determined after multiple times of training. After the current working condition of the compressor is obtained, the standard refrigerant flow of the compressor under the current working condition can be determined according to the refrigerant flow base surface model.
It should be noted that, in this embodiment, the refrigerant flow base plane is also obtained according to a plurality of parameter types of the compressor, and the training times of the refrigerant flow base plane model may be limited to exceed a preset number, for example, 100 times, so as to sufficiently improve the accuracy of the refrigerant flow base plane model, and further make the subsequent refrigerant leakage detection more accurate.
And S20, acquiring the difference between the current refrigerant flow and the standard refrigerant flow.
Specifically, after the current refrigerant flow rate of the compressor and the standard refrigerant flow rate under the current working condition are obtained through calculation, the current refrigerant flow rate and the standard refrigerant flow rate are subjected to difference operation to obtain a difference value. Optionally, in this embodiment, a plurality of corresponding difference values may be obtained within a period of time, and then averaged, and the average value is used as the difference value between the compressor refrigerant flow rate and the standard refrigerant flow rate within the period of time. It can be understood that by obtaining the difference value between the current refrigerant flow and the standard refrigerant flow within a period of time, the situation that the difference value is calculated wrongly due to incorrect acquired refrigerant flow caused by accidental abnormality in the refrigeration system can be prevented, and the accuracy of the difference value between the current refrigerant flow and the standard refrigerant flow of the compressor is further improved.
And S30, determining the refrigerant leakage condition of the refrigerating system according to the difference.
Specifically, after the difference between the current refrigerant flow rate of the compressor and the standard refrigerant flow rate is calculated and obtained, whether the refrigerant leakage condition of the refrigeration system exists or not, the refrigerant leakage condition such as the refrigerant leakage rate of the refrigeration system, and the like can be determined according to the difference.
It can be understood that, in the embodiment, there is a correlation between the difference between the current refrigerant flow rate and the standard refrigerant flow rate of the compressor and the refrigerant leakage rate, for example, there is a linear relationship between the two. It can be understood that the difference between the current refrigerant flow rate and the standard refrigerant flow rate of the compressor and the refrigerant leakage rate can be expressed by a relational equation, and each parameter in the relational equation can be obtained by training through experimental data.
In some embodiments of the present invention, determining a refrigerant leakage condition of the refrigeration system according to the difference further includes: and if the difference value is greater than the first threshold value and lasts for a first preset time, or the difference value is less than or equal to the first threshold value, the refrigerant leakage rate is greater than a second threshold value and keeps unchanged for a second preset time, or the difference value is less than or equal to the first threshold value, and the refrigerant leakage rate continuously increases within the second preset time, determining that refrigerant leakage occurs in the refrigeration system.
Specifically, in this embodiment, an average value of differences between a plurality of current refrigerant flows and a plurality of standard refrigerant flows within a period of time may be first obtained, and the average value is used as a difference between the current refrigerant flow and the standard refrigerant flow within the period of time, and then the difference is compared with a first threshold, if the difference is continuously greater than the first threshold for a first preset time, it is determined that the difference between the current refrigerant flow and the standard refrigerant flow of the compressor is too large, and it may be determined that refrigerant leakage has occurred in the refrigeration system.
If the difference value is judged to be not greater than the first threshold value, and the refrigerant leakage rate is greater than the second threshold value and is not changed for the second preset time, it is indicated that a filth blockage phenomenon possibly exists in a heat exchanger in the current refrigeration system, and it can be determined that refrigerant leakage has occurred in the refrigeration system.
If the difference value is smaller than or equal to the first threshold value and the refrigerant leakage rate is continuously increased within the second preset time, it is indicated that although the current refrigerant leakage amount is not large, the refrigerant leakage is always in a refrigerant leakage state in the refrigeration system, and it can be determined that the refrigerant leakage has occurred in the refrigeration system.
It should be noted that, in this embodiment, the numerical values of the preset categories, such as the first threshold, the second threshold, the first preset time, the second preset time, and the like, may be all defined according to the actual situation of the refrigeration system, for example, the second threshold in this embodiment may be 10%, and is not specifically limited.
In this embodiment, after having confirmed that refrigerating system has taken place the refrigerant and leaked, then can leak the refrigerant leakage rate and send to refrigerating system's after sale terminal on, of course, can also report to the police and remind to help operation maintenance personal to judge refrigerating system's leakage position and need fill the refrigerant volume of annotating again, thereby solved among the correlation technique maintenance personal and can't accurately fill the drawback of refrigerant volume to refrigerating system.
In one embodiment, as shown in FIG. 3Firstly, the parameters of the sensor are acquired through the existing sensor which is originally arranged on the refrigerating system, the parameters of the sensor can be input to the basal plane of the compressor flow, and then the standard flow q of the refrigerant of the current compressor under the working condition is calculated and obtained0The compressor exhaust temperature Td and the compressor exhaust pressure Pd can be directly obtained from the sensor parameters through the point detection parameters, and the sensor parameters are subjected to fitting calculation by using a fitting equation to obtain the compressor return air temperature Ts and the compressor return air pressure Ps, wherein the compressor return air temperature Ts and the compressor return air pressure Ps can be understood as parameters obtained through the virtual sensor. Calculating the real-time refrigerating flow q of the compressor by the aid of the compressor exhaust temperature Td, the compressor exhaust pressure Pd, the compressor return temperature Ts, the compressor return pressure Ps and the compressor ten coefficientst。
After obtaining the standard flow q of the refrigerant0Real-time refrigeration flow q with compressortThen, calculating the standard flow rate q of the refrigerant in a period of time0Real-time refrigerating flow q with compressortDetermining whether the flow difference value delta q is greater than a threshold value A, wherein the threshold value A is a first threshold value in the embodiment, and if the flow difference value delta q is greater than the threshold value A, determining that the current refrigeration system leaks; if the flow difference value deltaq is not larger than the threshold value A, calculating according to a relation equation between the refrigerant leakage percentage RefLeak (namely the refrigerant leakage rate) and the deltaq to obtain the refrigerant leakage percentage RefLeak, then judging whether the refrigerating system leaks according to the refrigerant leakage percentage RefLeak percent, and outputting the leakage degree. The relation equation between the refrigerant leakage percentage RefLeak% and the delta q can be obtained by training according to laboratory data.
In summary, the refrigerant leakage detection method for the refrigeration system according to the embodiment of the invention can accurately determine the leakage degree of the refrigerant in the refrigeration system, so as to provide accurate maintenance information for maintenance personnel and the like, help the maintenance of the refrigerant leakage problem in the refrigeration system, save the maintenance time, and improve the user experience.
Fig. 4 is a block diagram illustrating a refrigerant leakage detection apparatus of a refrigeration system according to an embodiment of the present invention.
Further, as shown in fig. 4, the present invention provides a refrigerant leakage detection apparatus 100 for a refrigeration system, where the refrigerant leakage detection apparatus 100 includes an obtaining module 101 and a determining module 102.
The acquisition module 101 is configured to acquire a current refrigerant flow of the compressor and a standard refrigerant flow of the compressor under a current working condition, and acquire a difference between the current refrigerant flow and the standard refrigerant flow; the determining module 102 is configured to determine a refrigerant leakage condition of the refrigeration system according to the difference.
In some embodiments of the present invention, the determining module 102 is further configured to obtain a refrigerant leakage rate of the refrigeration system according to the difference.
In some embodiments of the present invention, the determining module 102 is further configured to determine that refrigerant leakage occurs in the refrigeration system if the difference is greater than the first threshold and lasts for a first preset time, or the difference is less than or equal to the first threshold and the refrigerant leakage rate is greater than the second threshold and keeps unchanged for a second preset time, or the difference is less than or equal to the first threshold and the refrigerant leakage rate continuously increases within the second preset time.
In some embodiments of the present invention, the determining module 102 is further configured to send the refrigerant leakage rate to an after-market terminal of the refrigeration system after determining that the refrigeration system has a refrigerant leakage.
In some embodiments of the present invention, the obtaining module 101 is further configured to acquire an operation parameter of the compressor and an ambient temperature, where the operation parameter includes an exhaust temperature, an exhaust pressure, and a working frequency of the compressor; according to the operation parameters and the environment temperature, fitting by using a fitting equation to obtain the return air temperature and the return air pressure of the compressor; and obtaining the current refrigerant flow according to the exhaust temperature, the exhaust pressure, the return air temperature and the return air pressure of the compressor and the compressor ten-coefficient model.
In some embodiments of the present invention, the standard refrigerant flow rate is obtained according to a refrigerant flow rate base plane of the compressor under the current working condition.
It should be noted that, for a specific implementation of the refrigerant leakage detection apparatus of the refrigeration system according to the embodiment of the present invention, reference may be made to the implementation of the refrigerant leakage detection method of the refrigeration system in the foregoing embodiment, and details are not described here again.
In summary, the refrigerant leakage detection device of the refrigeration system in the embodiment of the invention can accurately judge the leakage degree of the refrigerant in the refrigeration system, so as to provide accurate maintenance information for maintenance personnel and the like, help is provided for the maintenance of the refrigerant leakage problem in the refrigeration system, the maintenance time is saved, and the user experience is improved.
Fig. 5 is a block diagram of a structure of a refrigerating apparatus according to an embodiment of the present invention.
Further, as shown in fig. 5, the present invention provides a refrigeration apparatus 200, and the refrigeration apparatus 200 includes the refrigerant leakage detecting device 100 in the above embodiment.
The refrigeration equipment provided by the embodiment of the invention can accurately judge the leakage degree of the refrigerant in the refrigeration system through the refrigerant leakage detection device in the embodiment, so as to provide accurate maintenance information for maintenance personnel and the like, help is provided for the maintenance of the refrigerant leakage problem in the refrigeration system, the maintenance time is saved, and the user experience is improved.
Fig. 6 is a block diagram of a refrigeration system according to an embodiment of the present invention.
Further, as shown in fig. 6, the present invention provides a refrigeration system 300, where the refrigeration system 300 includes a memory 301, a processor 302, and a refrigerant leakage detection program stored in the memory 301 and operable on the processor 302, and when the processor 302 executes the refrigerant leakage detection program, the refrigerant leakage detection method according to the above embodiment is implemented.
The refrigeration system of the embodiment of the invention can accurately judge the leakage degree of the refrigerant in the refrigeration system by executing the refrigerant leakage detection program stored in the memory through the processor, thereby providing accurate maintenance information for maintenance personnel and the like, providing help for the maintenance of the refrigerant leakage problem in the refrigeration system, saving the maintenance time and improving the user experience.
Further, the present invention provides a computer-readable storage medium having a refrigerant leakage detection program stored thereon, wherein the refrigerant leakage detection program, when executed by a processor, implements the refrigerant leakage detection method according to the above embodiments.
The computer-readable storage medium of the embodiment of the invention can accurately judge the leakage degree of the refrigerant in the refrigeration system by executing the refrigerant leakage detection program stored on the processor through the processor, thereby providing accurate maintenance information for maintenance personnel and the like, providing help for the maintenance of the refrigerant leakage problem in the refrigeration system, saving the maintenance time and improving the user experience.
It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second", and the like used in the embodiments of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated in the embodiments. Thus, a feature of an embodiment of the present invention that is defined by the terms "first," "second," etc. may explicitly or implicitly indicate that at least one of the feature is included in the embodiment. In the description of the present invention, the word "plurality" means at least two or two and more, such as two, three, four, etc., unless specifically limited otherwise in the examples.
In the present invention, unless otherwise explicitly stated or limited by the relevant description or limitation, the terms "mounted," "connected," and "fixed" in the embodiments are to be understood in a broad sense, for example, the connection may be a fixed connection, a detachable connection, or an integrated connection, and it may be understood that the connection may also be a mechanical connection, an electrical connection, etc.; of course, they may be directly connected or indirectly connected through intervening media, or they may be interconnected within one another or in an interactive relationship. Those of ordinary skill in the art will understand the specific meaning of the above terms in the present invention according to their specific implementation.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A refrigerant leakage detection method of a refrigeration system is characterized by comprising the following steps:
acquiring the current refrigerant flow of a compressor and the standard refrigerant flow of the compressor under the current working condition;
acquiring a difference value between the current refrigerant flow and the standard refrigerant flow;
and determining the refrigerant leakage condition of the refrigerating system according to the difference value.
2. The method of claim 1, wherein the determining a refrigerant leakage condition of the refrigeration system based on the difference comprises:
and acquiring the refrigerant leakage rate of the refrigerating system according to the difference value.
3. The method of claim 2, wherein the determining a refrigerant leakage condition of the refrigeration system based on the difference further comprises:
and if the difference value is greater than a first threshold value and lasts for a first preset time, or the difference value is less than or equal to the first threshold value, the refrigerant leakage rate is greater than a second threshold value and keeps unchanged for a second preset time, or the difference value is less than or equal to the first threshold value, and the refrigerant leakage rate continuously increases within the second preset time, determining that refrigerant leakage occurs in the refrigeration system.
4. The method of claim 3, wherein after determining that a refrigerant leak has occurred in the refrigeration system, the method further comprises:
and sending the refrigerant leakage rate to an after-sale terminal of the refrigeration system.
5. The method as claimed in any one of claims 1 to 4, wherein the obtaining the current refrigerant flow rate of the compressor comprises:
collecting operation parameters and ambient temperature of a compressor, wherein the operation parameters comprise the exhaust temperature, the exhaust pressure and the working frequency of the compressor;
according to the operation parameters and the environment temperature, fitting by using a fitting equation to obtain the return air temperature and the return air pressure of the compressor;
and acquiring the current refrigerant flow according to the exhaust temperature, the exhaust pressure, the return temperature and the return pressure of the compressor and a compressor ten-coefficient model.
6. The method of claim 1, wherein the standard refrigerant flow is obtained according to a refrigerant flow base of the compressor under a current operating condition.
7. A refrigerant leakage detection device of a refrigeration system, comprising:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the current refrigerant flow of a compressor and the standard refrigerant flow of the compressor under the current working condition and acquiring the difference value between the current refrigerant flow and the standard refrigerant flow;
and the determining module is used for determining the refrigerant leakage condition of the refrigerating system according to the difference value.
8. A refrigerating apparatus, characterized by comprising the refrigerant leakage detecting device according to claim 7.
9. A refrigeration system, comprising a memory, a processor, and a refrigerant leakage detection program stored in the memory and operable on the processor, wherein the processor implements the refrigerant leakage detection method according to any one of claims 1 to 6 when executing the refrigerant leakage detection program.
10. A computer-readable storage medium, having a refrigerant leakage detection program stored thereon, the refrigerant leakage detection program, when executed by a processor, implementing the refrigerant leakage detection method according to any one of claims 1 to 6.
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