CN114279043A - Refrigerant shortage processing method and device, multi-split air conditioner and storage medium - Google Patents
Refrigerant shortage processing method and device, multi-split air conditioner and storage medium Download PDFInfo
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Abstract
The application relates to a refrigerant shortage processing method and device, a multi-split air conditioner and a storage medium, and belongs to the technical field of multi-split air conditioners. The application includes: when executing the refrigerant evaluation instruction, obtaining the numerical value of the refrigerant evaluation parameter, and executing the following operation at least once: in the parameters for refrigerant evaluation, if the numerical value of any one parameter is not in the normal range, one indoor unit is closed, and whether the numerical values of all the parameters are in the normal range or not is determined based on the operation of the rest indoor units; when the numerical values of all parameters are determined to be within the normal range based on the operation of the remaining internal machines, obtaining a refrigerant shortage evaluation result of the multi-split air conditioner based on the sum of the refrigerant amount which can be filled in the pipelines from the closed internal machines to the branch pipes; and performing prompt processing according to the refrigerant shortage evaluation result. Through the method and the device, the problem that maintenance and arrangement processing which is not adaptive possibly occur after the refrigerant of the multi-split air conditioner leaks is solved.
Description
Technical Field
The application belongs to the technical field of multi-split air conditioners, and particularly relates to a refrigerant shortage processing method and device, a multi-split air conditioner and a storage medium.
Background
Many online air conditioners have the interior machine many, the pipeline is long, characteristics such as high fall, often more take place the refrigerant under the complex system and leak, many online air conditioner refrigerant leak back, the user is difficult to discover very hard the very first time generally, and even the user discovers the refrigerant and leaks, the user reports to repair through the phone and communicates with maintainer, the user can not clearly describe and lacks the refrigerant condition and gives maintainer, maintainer can't make the aassessment in advance, the maintenance that probably takes place the non-adaptation arranges the problem of handling, if carry the refrigerant to the scene when going, probably can carry the refrigerant not enough, need go back to carry once more, lead to the waste time, the manpower.
Disclosure of Invention
Therefore, the refrigerant shortage processing method and device, the multi-split air conditioner and the storage medium are provided, and the method and device are helpful for solving the problem that after refrigerant leakage of the multi-split air conditioner, due to the fact that leakage assessment cannot be made in advance, maintenance and arrangement processing which is not adaptive may occur.
In order to achieve the purpose, the following technical scheme is adopted in the application:
in a first aspect, the present application provides a refrigerant shortage processing method, which is applied to a multi-split air conditioner, and includes:
when executing the refrigerant evaluation instruction, obtaining the numerical value of the refrigerant evaluation parameter, and executing the following operation at least once: in the parameters for refrigerant evaluation, if the numerical value of any one parameter is not in the normal range, one internal machine is closed, and whether the numerical values of all the parameters are in the normal range is determined based on the operation of the rest internal machines;
when the numerical values of all parameters are determined to be within the normal range based on the operation of the remaining internal machines, obtaining a refrigerant shortage evaluation result of the multi-split air conditioner based on the sum of the refrigerant amount which can be filled in the pipelines from the closed internal machines to the branch pipes;
and performing prompt processing according to the refrigerant shortage evaluation result.
Further, the refrigerant shortage evaluation result includes: the refrigerant shortage degree grade is the ratio of the refrigerant shortage quantity to the sum of the refrigerant quantity which can be filled in the pipelines between the internal machine and the branch pipe after the internal machine is closed.
Further, the acquiring of the value of the parameter for refrigerant evaluation includes:
and acquiring the current operation mode of the multi-split air conditioner, and acquiring the numerical value of the parameter for refrigerant evaluation based on the current operation mode.
Further, if the current operation mode is the refrigeration mode, the determined parameters for refrigerant evaluation are as follows: the method comprises the following steps that (1) the multi-split air conditioning system is high in pressure, the multi-split air conditioning system is low in pressure, the indoor unit is overheated during running, and the opening of an electronic expansion valve of the indoor unit is opened;
if the current operation mode is the heating mode, the determined parameters for refrigerant evaluation are as follows: the multi-split air conditioning system has high pressure and low pressure.
Further, the refrigerant quantity that can be filled in the pipeline between the internal machine and the branch pipe is obtained by the following method:
acquiring the length of a pipeline between an internal machine and a branch pipe and a refrigerant filling coefficient;
and obtaining the refrigerant quantity which can be filled in the pipeline between the internal machine and the branch pipe according to the product of the length of the pipeline between the internal machine and the branch pipe and the refrigerant filling coefficient.
Further, the obtaining of the length of the pipeline from the internal machine to the branch pipe comprises:
confirming whether the length of a pipeline between an internal machine and a branch pipe is set or not, and if so, acquiring the set length; if not, acquiring the preset maximum supporting distance of the pipeline between the internal machine and the branch pipe.
Further, the obtaining of the refrigerant filling coefficient of the pipeline from the internal machine to the branch pipe includes:
obtaining rated refrigerating capacity or liquid pipe diameter of an inner machine;
and obtaining the refrigerant filling coefficient of the pipeline between the inner machine and the branch pipe based on the corresponding relation between the rated refrigerating capacity or the liquid pipe diameter of the inner machine and the refrigerant filling coefficient.
Further, the prompting processing according to the refrigerant shortage evaluation result includes:
displaying the refrigerant shortage evaluation result on a display screen of the multi-split air conditioner, and/or,
and sending the refrigerant shortage evaluation result to a user terminal associated with the multi-split air conditioner so as to display and prompt on the user terminal.
Further, the method further comprises:
and when the residual quantity of the started internal machines reaches a preset threshold value, based on the operation of the residual internal machines, if the determined parameter value for refrigerant evaluation is still out of the normal range, prompting processing is carried out according to the most serious refrigerant shortage degree grade.
In a second aspect, the present application provides a refrigerant shortage processing apparatus, which is applied to a multi-split air conditioner, and includes:
the acquisition execution module is used for acquiring the numerical value of the parameter for refrigerant evaluation when executing the refrigerant evaluation instruction, and executing the following operation at least once: in the parameters for refrigerant evaluation, if the numerical value of any one parameter is not in the normal range, one internal machine is closed, and whether the numerical values of all the parameters are in the normal range is determined based on the operation of the rest internal machines;
the evaluation obtaining module is used for obtaining a refrigerant lack evaluation result of the multi-split air conditioner based on the sum of the refrigerant amount which can be filled in the pipelines from the closed inner machine to the branch pipe when the numerical values of all the parameters are determined to be in the normal range based on the operation of the residual inner machines;
and the prompt processing module is used for carrying out prompt processing according to the refrigerant shortage evaluation result.
In a third aspect, the present application provides a multi-split air conditioner, including:
a memory having an executable program stored thereon;
a processor for executing the executable program in the memory to implement the steps of any of the above methods.
In a fourth aspect, the present application provides a computer readable storage medium having stored thereon computer instructions for causing a computer to perform the steps of any of the methods described above.
This application adopts above technical scheme, possesses following beneficial effect at least:
through the method and the device, when the refrigerant evaluation instruction is executed, the numerical value of the parameter for refrigerant evaluation is obtained, and the following operations are executed at least once: in the parameters for refrigerant evaluation, if the numerical value of any parameter is not in the normal range, the refrigerant leakage condition of the multi-split air conditioner is indicated, and for the refrigerant leakage condition, one indoor unit is closed, and whether the numerical values of all the parameters are in the normal range or not is determined based on the operation of the rest indoor units; when the operation based on surplus indoor set, when determining that the numerical value of each parameter is all in normal range, it lets surplus indoor set normal operating to explain the refrigerant volume support of many online air conditioners, then based on the refrigerant volume sum that can fill of pipeline between the closed indoor set to the branch pipe, can obtain many online air conditioners's scarce refrigerant evaluation result, carry out the suggestion processing based on this lack refrigerant evaluation result, this lack refrigerant evaluation result can let user and maintenance personal clearly know many online air conditioners's the condition of revealing, and then can let maintenance personal make aassessment in advance, carry out the maintenance arrangement processing of adaptation, thereby, help promoting maintenance efficiency through this application, also help promoting many online air conditioners's use to experience and feel.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flow chart illustrating a refrigerant starvation processing method according to an exemplary embodiment;
fig. 2 is a flowchart illustrating a refrigerant starvation handling method in a cooling mode according to an exemplary embodiment;
fig. 3 is a schematic block diagram illustrating a refrigerant deficient processing apparatus according to an exemplary embodiment;
fig. 4 is a block diagram schematically illustrating a multi-split air conditioner according to an exemplary embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a flowchart illustrating a refrigerant shortage processing method applied to a multi-split air conditioner according to an exemplary embodiment, where as shown in fig. 1, the method includes: the method comprises the following steps:
step S11, when executing the refrigerant evaluation instruction, obtaining a value of the refrigerant evaluation parameter, and performing the following operation at least once: in the parameters for refrigerant evaluation, if the numerical value of any one parameter is not in the normal range, one internal machine is closed, and whether the numerical values of all the parameters are in the normal range is determined based on the operation of the rest internal machines;
step S12, when the numerical values of all parameters are determined to be within the normal range based on the operation of the remaining internal machines, obtaining a refrigerant shortage evaluation result of the multi-split air conditioner based on the sum of the refrigerant amount which can be filled in the pipelines from the closed internal machines to the branch pipes;
and step S13, performing prompt processing according to the refrigerant shortage evaluation result.
Specifically, for a multi-split air conditioner, which is provided with a plurality of indoor units, the refrigerating/heating performance of the indoor units is stable and reliable when the indoor units are started to operate in a normal state (no refrigerant leakage occurs). In practical application, the refrigerant leakage is generally slow, little, and a user generally difficultly finds the refrigerant leakage at the first time, when the user finds the refrigerant leakage, the refrigerant leakage condition obviously affects the refrigerating/heating effect of an indoor unit, and after the user finds the refrigerant leakage, the user reports the refrigerant leakage condition to communicate with a maintenance worker through a telephone, so that the user cannot clearly describe the refrigerant shortage condition to the maintenance worker, the maintenance worker cannot make evaluation in advance, and the problem of maintenance arrangement processing which is not adaptive may occur.
In the method, the refrigerant evaluation instruction can be executed at fixed time or can be controlled and executed by a user at any time according to the will. And judging whether the numerical values of the parameters for refrigerant evaluation are all in a normal range or not, if so, indicating that the refrigerant of the multi-split air conditioner does not have the leakage problem, and if the numerical value of any parameter is not in the normal range, indicating that the refrigerant of the multi-split air conditioner leaks. The above judgment is specifically described as follows: in the multi-split air conditioner, the refrigerant conveyed to each indoor unit is conveyed to the branch pipes through the header pipe firstly, then is conveyed to the branch pipes and is conveyed to each indoor unit through the branch pipe in a shunting way, the branch pipes are provided with a plurality of output ports and are connected with the indoor units in a one-to-one correspondence mode, each indoor unit is connected with the branch pipes through corresponding pipelines, the refrigerant amount of the pipelines between the indoor units and the branch pipes can be filled, and the indicated refrigerant amount of the pipelines between the indoor units and the branch pipes under the condition of ensuring the normal operation of the multi-split air conditioner system is ensured. Under the normal condition, namely the condition that the refrigerant does not leak, when the inner machine is opened, the refrigerant amount distributed to the branch pipeline of the opened inner machine is sufficient, and the refrigerating/heating performance of the inner machine is stable and reliable. When the refrigerant leakage affects the refrigerating/heating effect of the internal machine, the refrigerant which is shunted into the internal machine is quite insufficient when the internal machine is started.
In practical applications, the method determination may be performed when the internal machine is fully turned on, or may be performed when a part of the internal machines are turned on.
For the condition that the refrigerant leakage exists, the following operations are executed at least once: and closing one internal machine, and determining whether the numerical values of all the parameters are in the normal range or not based on the operation of the rest internal machines. And when the numerical values of all the parameters are determined to be in the normal range based on the operation of the remaining internal machines, obtaining a refrigerant shortage evaluation result of the multi-split air conditioner based on the sum of the refrigerant amount which can be filled in the pipelines from the closed internal machines to the branch pipes. Specifically, for example, when all the internal machines are operated initially, since the refrigerant is output from the header pipe to a certain extent, when the refrigerant is leaked and is distributed to each internal machine through the branch pipe, the internal machines are insufficient in the quantity of the distributed refrigerant, which is expressed in that the numerical value of the parameter is out of the normal range in the parameter for refrigerant evaluation, so that when one internal machine is closed, the closed internal machine cannot be subjected to refrigerant distribution, and the refrigerants in the multi-split air-conditioning system are all distributed to the remaining operating internal machines. After one indoor unit is closed, if parameters are still out of normal ranges under the operation of the remaining operating indoor units, the fact that the refrigerants in the multi-split air-conditioning system are not sufficiently supplied to the remaining operating indoor units is indicated, under the condition, one indoor unit is closed again, the newly closed indoor unit cannot be shunted by the refrigerants, the refrigerants in the multi-split air-conditioning system are all distributed to the remaining operating indoor units, under the condition, the refrigerants in the multi-split air-conditioning system are determined again, whether the refrigerants are sufficiently supplied to the remaining operating indoor units is sufficient or not is determined, and if the refrigerants are sufficiently sufficient, the quantity of the lacking refrigerants can be determined, namely the sum of the quantities of the refrigerants which can be filled in pipelines between the two closed indoor units and the branch pipes.
For the "in the parameters for evaluating the refrigerant, if the value of any one of the parameters is not in the normal range, one of the internal machines is closed, and whether the values of the parameters are in the normal range is determined based on the operation of the remaining internal machines", in practical application, the step may be performed only once or may be performed twice or more, for the closed internal machine, the multi-split air conditioner does not supply the refrigerant quantity, and the refrigerant quantity of the multi-split air conditioner is supplied to the remaining internal machines for operation. When the operation based on surplus indoor set, when determining that the numerical value of each parameter is all in normal range, it lets surplus indoor set normal operating to explain the refrigerant volume support of multi-split air conditioner, then based on the refrigerant volume sum that can fill of pipeline between the closed indoor set to the branch pipe, can obtain the scarce refrigerant evaluation result of multi-split air conditioner, from this according to lacking the refrigerant evaluation result and carrying out the suggestion processing, this lacks the refrigerant evaluation result and can let user and maintenance personal clearly know the condition of revealing of multi-split air conditioner, and then can let maintenance personal make aassessment in advance, carry out the maintenance arrangement processing of adaptation, thereby, help promoting maintenance efficiency through this application, also help promoting the use experience of multi-split air conditioner and feel.
In one embodiment, the refrigerant shortage evaluation result includes: the refrigerant shortage degree grade is the ratio of the refrigerant shortage quantity to the sum of the refrigerant quantity which can be filled in the pipelines between the internal machine and the branch pipe after the internal machine is closed.
This lack refrigerant evaluation result when lacking the refrigerant volume, can carry the adaptation refrigerant volume for maintenance personal and provide the aassessment basis to the maintenance scene, avoid maintenance personal to carry the refrigerant not enough, need go back to carry once more, lead to waste time, manpower, perhaps, avoid maintenance personal to carry too much refrigerant volume, lead to increasing the transportation burden.
When the refrigerant lack evaluation result comprises the refrigerant lack degree grade, a user can visually judge the refrigerant lack degree of the multi-split air conditioner, repair time can be reasonably arranged accordingly, repair needs to be conducted as soon as possible under the condition that the refrigerant lack degree prompts the serious condition, and repair can be conducted according to the time when the refrigerant lack degree is not serious. Meanwhile, for maintenance personnel, the refrigerant lack degree grade of the multi-split air conditioner of the user is known, the self door-to-door maintenance plan can be reasonably determined, and the proper door-to-door maintenance date is arranged according to the refrigerant lack degree grade.
Therefore, in practical application, when the refrigerant shortage evaluation result comprises the refrigerant shortage amount and the refrigerant shortage degree grade, the time arrangement of users and maintenance personnel is facilitated.
The refrigerant perfusion of the multi-split air conditioner can be determined according to the following modes: the total refrigerant quantity in the system is the standard refrigerant carried by the unit plus the additional refrigerant in the pipeline. The pipeline includes a pipe section from the outdoor unit to the branch pipe (also called a main pipe), and a pipe section from the branch pipe to the indoor unit. In the present application, the refrigerant shortage evaluation result is obtained based on the sum of the refrigerant amounts that can be filled in the pipelines from the closed internal machine to the branch pipe.
The quantity of the refrigerant which can be filled in a pipeline between the internal machine and the branch pipe can be a value which is directly configured in advance; for the configuration that is not directly configured in advance, the application also provides the following implementation modes:
in one embodiment, the refrigerant amount that the pipeline between the inner machine and the branch pipe can be filled is obtained by the following method:
acquiring the length of a pipeline between an internal machine and a branch pipe and a refrigerant filling coefficient;
and obtaining the refrigerant quantity which can be filled in the pipeline between the internal machine and the branch pipe according to the product of the length of the pipeline between the internal machine and the branch pipe and the refrigerant filling coefficient.
In actual engineering installation and application, the lengths of pipelines from different internal machines to the branch pipes are often different, and the refrigerant filling coefficients of the pipelines from the different internal machines to the branch pipes are possibly different due to the fact that the rated refrigerating capacity of the internal machines is possibly different.
Further, the obtaining of the length of the pipeline from the internal machine to the branch pipe comprises:
confirming whether the length of a pipeline between an internal machine and a branch pipe is set or not, and if so, acquiring the set length; if not, acquiring the preset maximum supporting distance of the pipeline between the internal machine and the branch pipe.
Specifically, the length of the branch pipeline corresponding to the internal machine may be preset, and if not, the maximum support distance of the pipeline between the internal machine and the branch pipeline is determined according to the preset maximum support distance, and if the maximum distance of the external machine of the multi-split air conditioner, which supports the internal machine, to the branch pipeline is 30m, and if the length of the pipeline between the internal machine and the branch pipeline is not set, the maximum support distance of the pipeline between the internal machine and the branch pipeline is set to be 30m, and the maximum support distance is used as the length of the pipeline between the internal machine and the branch pipeline.
Further, the obtaining of the refrigerant filling coefficient of the pipeline from the internal machine to the branch pipe includes:
obtaining rated refrigerating capacity or liquid pipe diameter of an inner machine;
and obtaining the refrigerant filling coefficient of the pipeline between the inner machine and the branch pipe based on the corresponding relation between the rated refrigerating capacity or the liquid pipe diameter of the inner machine and the refrigerant filling coefficient.
Please refer to the following table, which is a table of the corresponding relationship between the rated refrigerating capacity of the indoor unit or the pipe diameter of the liquid pipe of the indoor unit and the refrigerant filling coefficient:
by utilizing the upper table, when one of the rated refrigerating capacity of the internal machine and the pipe diameter of the liquid pipe of the internal machine is obtained, the corresponding refrigerant filling coefficient can be obtained. And then, the product of the length of the refrigerant and the length of the pipeline between the internal machine and the branch pipe is calculated, and the refrigerant amount of the pipeline between the internal machine and the branch pipe can be filled.
After the N internal machines are closed, if the parameters of the multi-split system are normal, the refrigerant quantity which can be filled in the pipeline between the internal machine and the branch pipe is calculated for the closed internal machines respectively, and then the refrigerant quantity lacking quantity is obtained through summation. Such as: after 1 2.8KW and 1 6.3KW internal machines are closed, the parameters of the multi-split system reach normal, and the lengths of pipelines from the internal machines to the branch pipes are all 30M as an example, the quantity M of the refrigerant lacking obtained by calculation is as follows:
M＝0.05kg/m*30m+0.20kg/m*30m＝7.5kg
the total refrigerant quantity Z in the pipeline is the sum of the refrigerant quantities that can be filled in the pipelines from all the internal machines to the branch pipes, and therefore, the total refrigerant quantity Z can be obtained by referring to the calculation method of the refrigerant quantity M lacking, which is not described herein again.
The refrigerant shortage degree grade is obtained based on the ratio of the refrigerant shortage quantity to the pipeline refrigerant total quantity, and the calculated ratio is as follows: and V is M/Z.
In practical application, a plurality of refrigerant shortage degree grades can be set, each grade corresponds to a ratio section, and taking setting of four grades as an example, the refrigerant shortage degree grades are respectively: grades G1, G2, G3 and G4, refrigerant shortage degree: g1 < G2 < G3 < G4, with G4 being the most severe, see the following examples:
| ratio interval section | V＜20％ | 20％≤V＜30％ | 30％≤V＜50％ | 50％≤V |
| Degree of lack of refrigerant | G1 | G2 | G3 | G4 |
After the ratio of the refrigerant shortage quantity to the total refrigerant quantity of the pipeline is obtained, the corresponding refrigerant shortage degree grade can be obtained through the table.
In an embodiment, for step S11, the obtaining the value of the parameter for refrigerant evaluation includes:
and acquiring the current operation mode of the multi-split air conditioner, and acquiring the numerical value of the parameter for refrigerant evaluation based on the current operation mode.
Further, if the current operation mode is the refrigeration mode, the determined parameters for refrigerant evaluation are as follows: the method comprises the following steps that (1) the multi-split air conditioning system is high in pressure, the multi-split air conditioning system is low in pressure, the indoor unit is overheated during running, and the opening of an electronic expansion valve of the indoor unit is opened;
if the current operation mode is the heating mode, the determined parameters for refrigerant evaluation are as follows: the multi-split air conditioning system has high pressure and low pressure.
Specifically, for system low pressure, it refers to the low side refrigerant saturation pressure, in units: mpa; for system high pressure, it is meant the high side refrigerant saturation pressure, unit: mpa; indoor unit superheat degree is equal to indoor unit outlet pipe temperature-indoor unit inlet pipe temperature, unit: DEG C; the unit is the number of steps (PLS) for the opening of the internal electronic expansion valve.
Taking a cooling mode of a multi-split air conditioner as an example, please refer to fig. 2, where fig. 2 is a flowchart illustrating a method for processing a refrigerant lack in the cooling mode according to an exemplary embodiment, and parameters for refrigerant evaluation in the cooling mode are: the method comprises four parameters of high pressure of the multi-split air conditioning system, low pressure of the multi-split air conditioning system, superheat degree of an inner machine and opening degree of an electronic expansion valve of the inner machine. For each parameter, the following normal range table of parameters is exemplified:
| parameter for refrigerant evaluation | Normal Range example | Unit of |
| Low pressure Pd of system | 0.73≤Pd＜1.26 | MPa |
| System high pressure Ph | 1.90≤Pd＜3.45 | MPa |
| Superheat degree Ta of indoor unit | 0≤Ta＜10 | ℃ |
| Opening EXV of electronic expansion valve of internal machine | 50≤EXV＜200 | PLS |
In the cooling mode, if the numerical value of any parameter in the refrigerant evaluation parameters is not in the normal range, the leakage problem of the multi-split air conditioner is indicated.
In an embodiment, for step S13, the performing a prompt process according to the refrigerant shortage evaluation result includes:
displaying the refrigerant shortage evaluation result on a display screen of the multi-split air conditioner, and/or,
and sending the refrigerant shortage evaluation result to a user terminal associated with the multi-split air conditioner so as to display and prompt on the user terminal.
Specifically, the display screen of the multi-split air conditioner may include: the display screens of the indoor units, the display screens of the line controllers and the outdoor unit, the display screens of the centralized controller and the like can be set to display the refrigerant shortage evaluation result in practical application of various display screens of the multi-split air conditioner.
In one embodiment, the method further comprises:
and when the residual quantity of the started internal machines reaches a preset threshold value, based on the operation of the residual internal machines, if the determined parameter value for refrigerant evaluation is still out of the normal range, prompting processing is carried out according to the most serious refrigerant shortage degree grade.
In practical application, the threshold value can be set, and if only the last 1 (or 2 or 3) indoor units are left in the last time and each parameter is still not in the normal range, the prompt processing is directly performed according to the most serious degree grade of lack of refrigerant.
Referring to fig. 3, fig. 3 is a schematic block diagram illustrating a refrigerant shortage processing apparatus according to an exemplary embodiment, where the refrigerant shortage processing apparatus 3 is applied to a multi-split air conditioner, and includes:
the obtaining and executing module 31 is configured to obtain a numerical value of a parameter for refrigerant evaluation when executing the refrigerant evaluation instruction, and perform the following operation at least once: in the parameters for refrigerant evaluation, if the numerical value of any one parameter is not in the normal range, one internal machine is closed, and whether the numerical values of all the parameters are in the normal range is determined based on the operation of the rest internal machines;
the evaluation obtaining module 32 is configured to obtain a refrigerant shortage evaluation result of the multi-split air conditioner based on the sum of the refrigerant amounts that can be filled in the pipelines from the closed internal machines to the branch pipes when it is determined that the numerical values of the parameters are within the normal range based on the operation of the remaining internal machines;
and the prompt processing module 33 is configured to perform prompt processing according to the refrigerant shortage evaluation result.
Further, the refrigerant shortage evaluation result includes: the refrigerant shortage degree grade is a ratio of the refrigerant shortage quantity to the sum of the refrigerant quantity which can be filled in the pipelines between the internal machine and the branch pipe after the internal machine is closed.
Further, in the obtaining execution module 31, the obtaining of the numerical value of the parameter for refrigerant evaluation includes:
and acquiring the current operation mode of the multi-split air conditioner, and acquiring the numerical value of the parameter for refrigerant evaluation based on the current operation mode.
Further, if the current operation mode is the refrigeration mode, the determined parameters for refrigerant evaluation are as follows: the method comprises the following steps that (1) the multi-split air conditioning system is high in pressure, the multi-split air conditioning system is low in pressure, the indoor unit is overheated during running, and the opening of an electronic expansion valve of the indoor unit is opened;
if the current operation mode is the heating mode, the determined parameters for refrigerant evaluation are as follows: the multi-split air conditioning system has high pressure and low pressure.
Further, the refrigerant shortage processing device 3 further includes:
the pipeline refrigerant quantity obtaining module is used for obtaining the length of a pipeline between the internal machine and the branch pipe and the refrigerant filling coefficient; and obtaining the refrigerant quantity which can be filled in the pipeline between the internal machine and the branch pipe according to the product of the length of the pipeline between the internal machine and the branch pipe and the refrigerant filling coefficient.
Further, in the module for obtaining the refrigerant quantity of the pipeline, the length of the pipeline between the internal machine and the branch pipe is obtained, and the module comprises: confirming whether the length of a pipeline between an internal machine and a branch pipe is set or not, and if so, acquiring the set length; if not, acquiring the preset maximum supporting distance of the pipeline between the internal machine and the branch pipe.
Further, in the module for obtaining the refrigerant quantity of the pipeline, the refrigerant filling coefficient of the pipeline between the internal machine and the branch pipe is obtained, and the method comprises the following steps: obtaining rated refrigerating capacity or liquid pipe diameter of an inner machine; and obtaining the refrigerant filling coefficient of the pipeline between the inner machine and the branch pipe based on the corresponding relation between the rated refrigerating capacity or the liquid pipe diameter of the inner machine and the refrigerant filling coefficient.
Further, the prompt processing module 33 is specifically configured to: and displaying the refrigerant shortage evaluation result on a display screen of the multi-split air conditioner, and/or sending the refrigerant shortage evaluation result to a user terminal associated with the multi-split air conditioner so as to display and prompt on the user terminal.
Further, the refrigerant shortage processing device 3 further includes:
the threshold judging and prompting level module is used for: and when the residual quantity of the started internal machines reaches a preset threshold value, based on the operation of the residual internal machines, if the determined parameter value for refrigerant evaluation is still out of the normal range, prompting processing is carried out according to the most serious refrigerant shortage degree grade.
The specific manner in which the modules of the refrigerant-deficient processing apparatus 3 in the above embodiment perform operations has been described in detail in the above related method embodiment, and will not be described in detail here.
Referring to fig. 4, fig. 4 is a block diagram schematically illustrating a multi-split air conditioner according to an exemplary embodiment, where the multi-split air conditioner 4 includes:
a memory 41 having an executable program stored thereon;
a processor 42 for executing the executable program in the memory 41 to implement the steps of any of the above methods.
With regard to the multi-split air conditioner 4 in the above-described embodiment, the specific manner in which the processor 42 executes the program in the memory 41 has been described in detail in the embodiment related to the method, and will not be described in detail here.
Further, the present application provides a computer readable storage medium having stored thereon computer instructions for causing a computer to perform the steps of any of the methods described above. The storage medium may be a magnetic Disk, an optical Disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD) or a Solid State Drive (SSD), etc.; the storage medium may also comprise a combination of memories of the kind described above.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present application, the meaning of "plurality" means at least two unless otherwise specified.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, and further, as used herein, connected may include wirelessly connected; the term "and/or" is used to include any and all combinations of one or more of the associated listed items.
Any process or method descriptions in flow charts or otherwise described herein may be understood as: represents modules, segments or portions of code which include one or more executable instructions for implementing specific logical functions or steps of a process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present application.
It should be understood that portions of the present application 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.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means 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 application. 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.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (12)
1. The refrigerant shortage processing method is applied to a multi-split air conditioner and comprises the following steps:
when executing the refrigerant evaluation instruction, obtaining the numerical value of the refrigerant evaluation parameter, and executing the following operation at least once: in the parameters for refrigerant evaluation, if the numerical value of any one parameter is not in the normal range, one internal machine is closed, and whether the numerical values of all the parameters are in the normal range is determined based on the operation of the rest internal machines;
when the numerical values of all parameters are determined to be within the normal range based on the operation of the remaining internal machines, obtaining a refrigerant shortage evaluation result of the multi-split air conditioner based on the sum of the refrigerant amount which can be filled in the pipelines from the closed internal machines to the branch pipes;
and performing prompt processing according to the refrigerant shortage evaluation result.
2. The method of claim 1, wherein the refrigerant starvation assessment comprises: the refrigerant shortage degree grade is the ratio of the refrigerant shortage quantity to the sum of the refrigerant quantity which can be filled in the pipelines between the internal machine and the branch pipe after the internal machine is closed.
3. The method of claim 1, wherein the obtaining the value of the parameter for refrigerant evaluation comprises:
and acquiring the current operation mode of the multi-split air conditioner, and acquiring the numerical value of the parameter for refrigerant evaluation based on the current operation mode.
4. The method of claim 3,
if the current operation mode is a refrigeration mode, the determined parameters for refrigerant evaluation are as follows: the method comprises the following steps that (1) the multi-split air conditioning system is high in pressure, the multi-split air conditioning system is low in pressure, the indoor unit is overheated during running, and the opening of an electronic expansion valve of the indoor unit is opened;
if the current operation mode is the heating mode, the determined parameters for refrigerant evaluation are as follows: the multi-split air conditioning system has high pressure and low pressure.
5. The method as claimed in claim 1, wherein the refrigerant volume fillable for the line from the internal machine to the branch pipe is obtained by:
acquiring the length of a pipeline between an internal machine and a branch pipe and a refrigerant filling coefficient;
and obtaining the refrigerant quantity which can be filled in the pipeline between the internal machine and the branch pipe according to the product of the length of the pipeline between the internal machine and the branch pipe and the refrigerant filling coefficient.
6. The method of claim 5, wherein obtaining the length of the line between the internal machine and the manifold comprises:
confirming whether the length of a pipeline between an internal machine and a branch pipe is set or not, and if so, acquiring the set length; if not, acquiring the preset maximum supporting distance of the pipeline between the internal machine and the branch pipe.
7. The method of claim 5, wherein obtaining the refrigerant fill factor of the indoor unit to the branch pipe comprises:
obtaining rated refrigerating capacity or liquid pipe diameter of an inner machine;
and obtaining the refrigerant filling coefficient of the pipeline between the inner machine and the branch pipe based on the corresponding relation between the rated refrigerating capacity or the liquid pipe diameter of the inner machine and the refrigerant filling coefficient.
8. The method as claimed in claim 1, wherein the performing a prompt process according to the refrigerant shortage assessment result comprises:
displaying the refrigerant shortage evaluation result on a display screen of the multi-split air conditioner, and/or,
and sending the refrigerant shortage evaluation result to a user terminal associated with the multi-split air conditioner so as to display and prompt on the user terminal.
9. The method according to any one of claims 1-8, further comprising:
and when the residual quantity of the started internal machines reaches a preset threshold value, based on the operation of the residual internal machines, if the determined parameter value for refrigerant evaluation is still out of the normal range, prompting processing is carried out according to the most serious refrigerant shortage degree grade.
10. The refrigerant shortage processing device is applied to a multi-split air conditioner and comprises:
the acquisition execution module is used for acquiring the numerical value of the parameter for refrigerant evaluation when executing the refrigerant evaluation instruction, and executing the following operation at least once: in the parameters for refrigerant evaluation, if the numerical value of any one parameter is not in the normal range, one internal machine is closed, and whether the numerical values of all the parameters are in the normal range is determined based on the operation of the rest internal machines;
the evaluation obtaining module is used for obtaining a refrigerant lack evaluation result of the multi-split air conditioner based on the sum of the refrigerant amount which can be filled in the pipelines between the closed inner machine and the branch pipe when the numerical values of all the parameters are determined to be in the normal range based on the operation of the residual inner machines;
and the prompt processing module is used for carrying out prompt processing according to the refrigerant shortage evaluation result.
11. A multi-split air conditioner, comprising:
a memory having an executable program stored thereon;
a processor for executing the executable program in the memory to implement the steps of the method of any one of claims 1-9.
12. A computer-readable storage medium having stored thereon computer instructions for causing a computer to perform the steps of the method of any one of claims 1-9.
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