CN107560089B - Multi-split air conditioning system and method and device for diagnosing refrigerant quantity of multi-split air conditioning system - Google Patents
Multi-split air conditioning system and method and device for diagnosing refrigerant quantity of multi-split air conditioning system Download PDFInfo
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Abstract
The invention discloses a multi-split system and a method and a device for diagnosing the refrigerant quantity of the multi-split system, wherein the method comprises the following steps: when a refrigerant quantity diagnosis instruction is received, acquiring the outdoor environment temperature, and judging whether the outdoor environment temperature is greater than a first preset temperature and less than or equal to a second preset temperature; if the outdoor environment temperature is higher than the first preset temperature and lower than or equal to the second preset temperature, controlling the multi-split air-conditioning system to operate in a refrigeration test mode; when the startup operation time of the multi-split system is greater than or equal to a first preset time, acquiring the operation parameters of the multi-split system every other second preset time, and judging whether the multi-split system is in a stable operation state according to the operation parameters of the multi-split system; and if the multi-split system is in a stable operation state, diagnosing the refrigerant quantity according to the operation parameters of the multi-split system, and displaying the diagnosis result. The diagnosis method can avoid the influence of too much or too little refrigerant on the reliability and comfort of the system.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a method for diagnosing the amount of refrigerant in a multi-split system, a device for diagnosing the amount of refrigerant in the multi-split system and the multi-split system with the device.
Background
The multi-split air conditioner is widely applied to various large-scale office buildings, hospitals, villas and the like, in particular to a multi-split large-scale multi-split air conditioner system, and only one or a plurality of outdoor units are connected in parallel, so that refrigeration or heating can be provided for a plurality of indoor units simultaneously, and the refrigeration and heating requirements of various large-scale occasions are met.
At present, multi-split systems, particularly large multi-split systems, have many indoor units, complex pipeline connection and long pipelines, and the system needs a large amount of filled refrigerants. Due to the fact that system pipelines are complex, indoor units are multiple, the quantity of refrigerant of the system is large due to human errors, the number of welded junctions of the multi-split air conditioner system is generally large, the difference of engineering installation quality is large, refrigerant is filled if the pressure maintaining time of the system is not long enough, and the refrigerant is insufficient due to the fact that the system is slightly leaked when being started or the refrigerant is leaked through a high-pressure system after the system runs for a period of time. When the amount of the refrigerant is large, the liquid return of the system can cause hydraulic compression or the high-pressure protection shutdown of the system due to overhigh pressure can be caused seriously; when the amount of the refrigerant is small, the indoor unit may lack the refrigerant, the capacity is insufficient and the cooling and heating requirements of users cannot be met, and the superheat degree may be large, and the exhaust high-temperature protection or the low-pressure over-low protection may be caused. Therefore, the method has important significance in engineering practice by primarily judging the quantity of the system refrigerant.
Disclosure of Invention
The present invention is directed to solving at least one of the problems in the art to some extent. Therefore, a first object of the present invention is to provide a method for diagnosing refrigerant quantity in a multi-split system, which can avoid the influence of too much or too little refrigerant quantity on system reliability and comfort.
A second object of the invention is to propose a non-transitory computer-readable storage medium.
The third purpose of the present invention is to provide a device for diagnosing the amount of refrigerant in a multi-split system.
A fourth object of the present invention is to provide a multi-split system.
In order to achieve the above object, a method for diagnosing refrigerant quantity in a multi-split system according to an embodiment of a first aspect of the present invention includes the following steps: when a refrigerant quantity diagnosis instruction is received, acquiring an outdoor environment temperature, and judging whether the outdoor environment temperature is greater than a first preset temperature and less than or equal to a second preset temperature; if the outdoor environment temperature is higher than the first preset temperature and lower than or equal to the second preset temperature, controlling the multi-split air-conditioning system to operate in a refrigeration test mode; when the starting operation time of the multi-split system is greater than or equal to a first preset time, acquiring the operation parameters of the multi-split system every other second preset time, and judging whether the multi-split system is in a stable operation state or not according to the operation parameters of the multi-split system; and if the multi-split air conditioner system is in a stable operation state, diagnosing the refrigerant quantity according to the operation parameters of the multi-split air conditioner system, and displaying a diagnosis result.
According to the method for diagnosing the refrigerant quantity in the multi-split air-conditioning system, when a refrigerant quantity diagnosis instruction is received, the outdoor environment temperature is obtained, whether the outdoor environment temperature is larger than a first preset temperature and smaller than or equal to a second preset temperature or not is judged, if the outdoor environment temperature is larger than the first preset temperature and smaller than or equal to the second preset temperature, the multi-split air-conditioning system is controlled to operate in a refrigeration test mode, when the startup operation time of the multi-split air-conditioning system is larger than or equal to the first preset time, the operation parameters of the multi-split air-conditioning system are obtained every second preset time, whether the multi-split air-conditioning system is in a stable operation state or not is judged according to the operation parameters of the multi-split air-conditioning system, if the multi-split air-conditioning system is in the stable operation state, the refrigerant quantity is diagnosed according to. Therefore, the method can avoid the influence of too much or too little refrigerant on the reliability and comfort of the system.
In addition, the method for diagnosing the refrigerant quantity in the multi-split system according to the embodiment of the present invention may further have the following additional technical features:
according to one embodiment of the invention, when the multi-split system runs in a refrigeration test mode, each indoor unit in the multi-split system is forcibly controlled to run in a refrigeration mode, and a first timer is controlled to start timing the total diagnosis time, wherein in the process of diagnosing the refrigerant quantity, whether the total diagnosis time is greater than a third preset time is also judged; and if the total diagnosis time is greater than a third preset time, displaying prompt information that the multi-split system cannot be stable and cannot be diagnosed.
According to one embodiment of the invention, in the process of diagnosing the refrigerant quantity, whether the starting-up proportion of the refrigeration indoor unit is greater than a preset proportion is also judged; and if the starting proportion of the refrigeration indoor unit is less than or equal to the preset proportion, displaying prompt information that the starting proportion of the indoor unit is too small and diagnosis cannot be performed.
According to an embodiment of the invention, in the process of diagnosing the refrigerant quantity, if a quit diagnosis instruction is received, the multi-split system is controlled to stop diagnosing the refrigerant quantity.
According to an embodiment of the invention, when the outdoor environment temperature is less than or equal to the first preset temperature or greater than the second preset temperature, a prompt message that the outdoor temperature is abnormal and diagnosis cannot be performed is displayed.
To achieve the above object, a second aspect of the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, the computer program, when executed by a processor, implementing the above diagnostic method.
By executing the diagnosis method, the non-transitory computer-readable storage medium of the embodiment of the invention can avoid the influence of too much or too little refrigerant on the reliability and comfort of the system.
In order to achieve the above object, a third aspect of the present invention provides an apparatus for diagnosing an amount of refrigerant in a multi-split system, including: the receiving module is used for receiving a user instruction; the temperature acquisition module is used for acquiring the outdoor environment temperature when the user instruction received by the receiving module is a refrigerant quantity diagnosis instruction; the first judgment module is used for judging whether the outdoor environment temperature is greater than a first preset temperature and less than or equal to a second preset temperature; the diagnosis control module is used for controlling the multi-split air conditioning system to operate in a refrigeration test mode when the outdoor environment temperature is greater than the first preset temperature and less than or equal to the second preset temperature; the parameter acquisition module is used for acquiring the operation parameters of the multi-split air-conditioning system every second preset time when the startup operation time of the multi-split air-conditioning system is greater than or equal to first preset time; the second judgment module is used for judging whether the multi-split system is in a stable operation state or not according to the operation parameters of the multi-split system; a display module; the diagnosis control module is further used for diagnosing the refrigerant quantity according to the operation parameters of the multi-split system when the multi-split system is in a stable operation state, and controlling the display module to display a diagnosis result.
According to the refrigerant quantity diagnosis device in the multi-split air-conditioning system, the receiving module receives a user instruction, when the user instruction received by the receiving module is a refrigerant quantity diagnosis instruction, the temperature obtaining module obtains the outdoor environment temperature, then the first judging module judges whether the outdoor environment temperature is greater than a first preset temperature and less than or equal to a second preset temperature, when the outdoor environment temperature is greater than the first preset temperature and less than or equal to the second preset temperature, the diagnosis control module controls the multi-split air-conditioning system to operate in a refrigeration test mode, when the startup operation time of the multi-split air-conditioning system is greater than or equal to the first preset time, the parameter obtaining module obtains the operation parameters of the multi-split air-conditioning system every second preset time, the second judging module judges whether the multi-split air-conditioning system is in a stable operation state according to the operation parameters of the multi-split air-conditioning system, when the multi-split air-conditioning system is in, the diagnosis control module diagnoses the refrigerant quantity according to the operation parameters of the multi-split system and controls the display module to display the diagnosis result. Therefore, the device can avoid the influence of too much or too little refrigerant on the reliability and comfort of the system.
In addition, the diagnostic apparatus for refrigerant quantity in a multi-split system according to the above embodiment of the present invention may further have the following additional technical features:
according to an embodiment of the invention, the multi-split air conditioning system further comprises a third judging module, wherein when the multi-split air conditioning system operates in a cooling test mode, the diagnosis control module is used for forcibly controlling each indoor unit in the multi-split air conditioning system to perform cooling operation, controlling a first timer to start timing total diagnosis time, and judging whether the total diagnosis time is greater than a third preset time through the third judging module in the process of diagnosing the refrigerant quantity; and if the total diagnosis time is greater than a third preset time, controlling the display module to display prompt information that the multi-online system cannot be stable and cannot be diagnosed.
According to an embodiment of the present invention, the indoor unit further includes a fourth determining module, wherein the diagnosis control module is configured to determine whether a startup proportion of the refrigeration indoor unit is greater than a preset proportion through the fourth determining module in a process of diagnosing the refrigerant quantity; and if the starting proportion of the refrigeration indoor unit is less than or equal to the preset proportion, controlling the display module to display prompt information that the starting proportion of the indoor unit is too small and diagnosis cannot be carried out.
According to an embodiment of the present invention, in the process of diagnosing the refrigerant quantity, if the user instruction received by the receiving module is a diagnosis exit instruction, the diagnosis control module controls the multi-split system to stop diagnosing the refrigerant quantity.
According to an embodiment of the present invention, when the outdoor ambient temperature is less than or equal to the first preset temperature or greater than the second preset temperature, the diagnosis control module is further configured to control the display module to display a prompt message indicating that the outdoor temperature is abnormal and the diagnosis cannot be performed.
In order to achieve the above object, a fourth object of the present invention is to provide a multi-split system, which includes the apparatus for diagnosing the refrigerant quantity in the multi-split system.
According to the multi-split system provided by the embodiment of the invention, through the diagnostic device for the refrigerant quantity in the multi-split system, the influence of too much or too little refrigerant quantity on the reliability and comfort of the system can be avoided.
Drawings
Fig. 1 is a flowchart of a method for diagnosing an amount of refrigerant in a multi-split system according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a method for diagnosing an amount of refrigerant in a multi-split system according to an embodiment of the present invention;
fig. 3 is a block diagram illustrating an apparatus for diagnosing an amount of refrigerant in a multi-split 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.
A method for diagnosing an amount of refrigerant in a multi-split system, an apparatus for diagnosing an amount of refrigerant in a multi-split system, and a multi-split system having the apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings.
Fig. 1 is a flowchart illustrating a method for diagnosing an amount of refrigerant in a multi-split system according to an embodiment of the present invention.
As shown in fig. 1, a method for diagnosing a refrigerant quantity in a multi-split system according to an embodiment of the present invention may include the following steps:
and S1, when the refrigerant quantity diagnosis instruction is received, acquiring the outdoor environment temperature, and judging whether the outdoor environment temperature is greater than the first preset temperature and less than or equal to the second preset temperature. The first preset temperature and the second preset temperature can be calibrated according to actual conditions.
And S2, if the outdoor environment temperature is greater than the first preset temperature and less than or equal to the second preset temperature, controlling the multi-split air conditioning system to operate in a refrigeration test mode.
And S3, when the startup operation time of the multi-split air-conditioning system is greater than or equal to the first preset time, acquiring the operation parameters of the multi-split air-conditioning system every second preset time, and judging whether the multi-split air-conditioning system is in a stable operation state according to the operation parameters of the multi-split air-conditioning system. The first preset time and the second preset time can be calibrated according to actual conditions.
And S4, if the multi-split system is in a stable operation state, diagnosing the refrigerant quantity according to the operation parameters of the multi-split system, and displaying the diagnosis result.
According to one embodiment of the invention, when the outdoor environment temperature is less than or equal to the first preset temperature or greater than the second preset temperature, prompt information that the outdoor temperature is abnormal and diagnosis cannot be carried out is displayed.
Further, according to an embodiment of the present invention, when the multi-split air-conditioning system operates in the cooling test mode, each indoor unit in the multi-split air-conditioning system is forcibly controlled to perform cooling operation, and the first timer is controlled to start timing the total diagnosis time, wherein in the process of diagnosing the refrigerant quantity, it is further determined whether the total diagnosis time is greater than a third preset time, and if the total diagnosis time is greater than the third preset time, a prompt message indicating that the multi-split air-conditioning system cannot be stable and cannot perform diagnosis is displayed. And the third preset time can be calibrated according to the actual condition.
Furthermore, according to an embodiment of the present invention, in the process of diagnosing the refrigerant quantity, it is further determined whether the startup proportion of the indoor refrigeration unit is greater than the preset proportion, and if the startup proportion of the indoor refrigeration unit is less than or equal to the preset proportion, a prompt message indicating that the indoor refrigeration unit is too small to be diagnosed is displayed. The preset proportion can be calibrated according to actual conditions.
Specifically, in the process of operating the multi-split air-conditioning system, if a refrigerant quantity diagnosis instruction is received, the current outdoor environment temperature T4 is obtained and is judged. When the T4 is less than or equal to the first preset temperature a or the T4 is greater than the second preset temperature b, the prompt message of 'abnormal outdoor temperature and incapability of diagnosis' is displayed to remind the user timely. And when a is more than T4 and less than or equal to b, controlling the multi-split air conditioning system to operate in a refrigeration test mode.
When the multi-split air conditioner system runs in a refrigeration test mode, all indoor units are forcibly controlled to run in a refrigeration mode, and a first timer is controlled to start timing the total diagnosis time. And then when the starting operation time of the multi-split air-conditioning system is more than or equal to a first preset time t1, acquiring the current operation parameters of the multi-split air-conditioning system every second preset time t2, calculating the average value of the current operation parameters, and judging whether the system is in a stable operation state or not according to the average value and the preset condition of the stable operation of the system.
Wherein, if the compressor operating frequency f meets fmax-fmin < d1 (for example, d1 is 5, where fmax is the maximum operating frequency in t2 time, and fmin is the minimum operating frequency in t2 time) within the second preset time t 2; the rotating speed V of the fan meets Vmax-Vmin < d2 (for example, d2 is 100rpm, Vmax is the maximum rotating speed of the fan within t2 time, and Vmin is the minimum rotating speed of the fan within t2 time); the exhaust temperature Tp of the compressor meets Tpmax-Tpmin < d3 (for example, d3 is 5, wherein Tpmax is the maximum value of the exhaust temperature in t2 time, and Tpmin is the minimum value of the exhaust temperature in t2 time), the return temperature Th of the compressor meets Thmax-Thmin < d4 (for example, d4 is 4, wherein Thmax is the maximum value of the return temperature in t2 time, and Thmin is the minimum value of the return temperature in t2 time), when the above conditions are all met, the multi-split air-conditioning system is in a stable state, and then the diagnosis result of the quantity of refrigerant is displayed according to the diagnosis condition of the quantity of refrigerant. And if the multi-split air-conditioning system is not in the stable state, acquiring the current operating parameters of the multi-split air-conditioning system again at intervals of a second preset time t2, and judging the current operating parameters.
In the process of diagnosing the refrigerant quantity, if the total diagnosis time is longer than a third preset time t3, displaying prompt information that the multi-split air conditioning system cannot be stable and cannot be diagnosed, timely reminding a user, and otherwise, continuously executing the refrigerant quantity diagnosis. In addition, in order to improve the judgment accuracy, the starting-up proportion of the refrigerating inner machine is also judged, if the starting-up proportion of the refrigerating inner machine is smaller than or equal to the preset proportion, prompt information of 'the starting-up proportion of the indoor machine is too small and diagnosis cannot be carried out' is displayed, a user is reminded in time, and otherwise, the diagnosis of the refrigerant quantity is continuously carried out.
When the refrigerant quantity is diagnosed according to the operation parameters of the multi-split system, if the startup proportion L1 meets 70% < L1< 150%, the current outdoor environment temperature T4, the high pressure liquid pipe temperature T5, the return air temperature Th of the compressor, the high pressure (where the saturation temperature Tc corresponding to the high pressure is obtained from the high pressure), the low pressure (where the saturation temperature Te corresponding to the low pressure is obtained from the low pressure) are obtained, and then the refrigerant quantity is determined as follows: if (Tc-T5)/(Tc-T4) > a1, Tp-Tc < a2 and Th-Te < a3, the system is judged to be in a multi-refrigerant state operation due to a large amount of refrigerant. If (Tc-T5)/(Tc-T4) < b1, Tp-Tc > b2 and Th-Te > b3, the system is judged to be in a state of less refrigerant and the system is judged to be in a state of less refrigerant. Wherein if (Tc-T5) or (Tc-T4) is less than 0, (Tc-T5)/(Tc-T4) is calculated as 0, a1, a2, a3, b1, b2 and b3 are preset values (obtained by a large number of experimental tests), (Tc-T5)/(Tc-T4) is between 0 and 1, b 1< a1, b2 > a2, and b3> a 3. If the judgment conditions of excessive refrigerant quantity and insufficient refrigerant quantity are not met, the refrigerant quantity is in a normal range.
In addition, according to an embodiment of the present invention, in the process of diagnosing the refrigerant quantity, if the exit diagnosis instruction is received, the multi-split system is controlled to stop diagnosing the refrigerant quantity.
That is, in the entire diagnosis process, if the exit diagnosis command is received, the diagnosis of the refrigerant amount is stopped.
Therefore, the method for diagnosing the refrigerant quantity in the multi-split system disclosed by the embodiment of the invention is beneficial to diagnosing the refrigerant quantity when the system is put into operation for the first time after the engineering installation is finished, is also beneficial to determining whether the influence of the refrigerant quantity is caused in the maintenance, overhaul and troubleshooting, helps maintenance personnel to lock and analyze the reason more quickly, and avoids the influence of too much or too little refrigerant quantity on the reliability and comfort of the system.
To make the present invention more clear to those skilled in the art, fig. 3 is a flowchart illustrating a method for diagnosing the refrigerant quantity in a multi-split system according to an embodiment of the present invention. As shown in fig. 3, the method for diagnosing the amount of refrigerant in the multi-split system may include the following steps:
s101, a refrigerant quantity diagnosis command is received.
S102, the outdoor environment temperature T4 is obtained.
S103, judging whether the first preset temperature a is more than T4 and less than or equal to the second preset temperature b. If yes, go to step S105; if not, step S104 is executed.
S104, displaying the abnormal outdoor temperature and the failure of diagnosis.
And S105, operating the multi-split system in a cooling test mode.
And S106, forcing all indoor units to perform cooling operation.
S107, the first timer starts counting the total diagnosis time.
And S108, starting the computer for a running time which is not less than the first preset time t1, and starting single-cycle timing.
And S109, judging whether the total diagnosis time is greater than the third preset time t 3. If yes, go to step S110; if not, step S111 is performed.
And S110, displaying that the multi-split system cannot be stabilized and cannot be diagnosed.
And S111, judging whether the starting ratio of the refrigeration indoor unit is greater than the preset ratio L or not. If yes, go to step S113; if not, step S112 is performed.
S112, displaying that the indoor unit is too small in starting ratio and cannot be diagnosed.
S113, judging whether the single-cycle accumulated time is larger than or equal to the second preset time t 2. If yes, go to step S114; if not, return to step S109.
And S114, acquiring the operating parameters of the multi-split system.
And S115, judging whether the system is in stable operation. If yes, go to step S116; if not, step S108 is performed.
And S116, displaying the diagnosis result.
And S117, quitting the diagnosis.
In summary, according to the method for diagnosing the amount of refrigerant in the multi-split air-conditioning system in the embodiment of the present invention, when a refrigerant amount diagnosis instruction is received, the outdoor environment temperature is obtained, and it is determined whether the outdoor environment temperature is greater than the first preset temperature and less than or equal to the second preset temperature, if the outdoor environment temperature is greater than the first preset temperature and less than or equal to the second preset temperature, the multi-split air-conditioning system is controlled to operate in the refrigeration test mode, when the startup operation time of the multi-split air-conditioning system is greater than or equal to the first preset time, the operation parameters of the multi-split air-conditioning system are obtained every second preset time, and it is determined whether the multi-split air-conditioning system is in the stable operation state according to the operation parameters of the multi-split air-conditioning system, if the multi-split air-conditioning system is in the stable operation state. Therefore, the method can avoid the influence of too much or too little refrigerant on the reliability and comfort of the system.
Fig. 3 is a block diagram illustrating an apparatus for diagnosing an amount of refrigerant in a multi-split system according to an embodiment of the present invention. As shown in fig. 3, the apparatus for diagnosing the amount of refrigerant in a multi-split system according to an embodiment of the present invention may include: the device comprises a receiving module 10, a temperature obtaining module 20, a first judging module 30, a diagnosis control module 40, a parameter obtaining module 50, a second judging module 60 and a display module 70.
The receiving module 10 is configured to receive a user instruction. The temperature obtaining module 20 is configured to obtain the outdoor environment temperature when the user instruction received by the receiving module is a refrigerant quantity diagnosis instruction. The first determining module 30 is configured to determine whether the outdoor ambient temperature is greater than a first preset temperature and less than or equal to a second preset temperature. The diagnosis control module 40 is configured to control the multi-split system to operate in the cooling test mode when the outdoor ambient temperature is greater than the first preset temperature and less than or equal to the second preset temperature. The parameter obtaining module 50 is configured to obtain the operation parameters of the multi-split system every second preset time when the startup operation time of the multi-split system is greater than or equal to the first preset time. The second judging module 60 is configured to judge whether the multi-split air-conditioning system is in a stable operation state according to the operation parameters of the multi-split air-conditioning system. The diagnosis control module 40 is further configured to diagnose the refrigerant quantity according to the operation parameters of the multi-split air-conditioning system when the multi-split air-conditioning system is in a stable operation state, and control the display module 70 to display a diagnosis result.
According to an embodiment of the present invention, as shown in fig. 3, the apparatus for diagnosing the refrigerant quantity in the multi-split system further includes a third determining module 80, wherein when the multi-split system operates in the cooling test mode, the diagnosis control module 40 is configured to forcibly control each indoor unit in the multi-split system to perform cooling operation, and control the first timer to start timing the total diagnosis time, and during the process of diagnosing the refrigerant quantity, further determine whether the total diagnosis time is greater than a third preset time through the third determining module 80, and if the total diagnosis time is greater than the third preset time, control the display module 70 to display a prompt message that the multi-split system cannot be stabilized and cannot perform diagnosis.
According to an embodiment of the present invention, as shown in fig. 3, the apparatus for diagnosing refrigerant quantity in a multi-split system further includes a fourth determining module 90, wherein the diagnosis control module 40 is configured to determine whether a startup proportion of the indoor refrigeration unit is greater than a preset proportion through the fourth determining module 90 in a process of diagnosing the refrigerant quantity, and if the startup proportion of the indoor refrigeration unit is less than or equal to the preset proportion, control the display module 70 to display a prompt message that the startup proportion of the indoor refrigeration unit is too small and diagnosis cannot be performed.
According to an embodiment of the present invention, in the process of diagnosing the refrigerant quantity, if the user instruction received by the receiving module 10 is a diagnosis exit instruction, the diagnosis control module 40 controls the multi-split system to stop diagnosing the refrigerant quantity.
According to an embodiment of the present invention, when the outdoor ambient temperature is less than or equal to the first preset temperature or greater than the second preset temperature, the diagnosis control module 40 is further configured to control the display module 70 to display a prompt message indicating that the outdoor temperature is abnormal and cannot be diagnosed.
It should be noted that details that are not disclosed in the apparatus for diagnosing an amount of refrigerant in a multi-split air-conditioning system according to the embodiment of the present invention refer to details disclosed in the method for diagnosing an amount of refrigerant in a multi-split air-conditioning system according to the embodiment of the present invention, and are not described herein again in detail.
According to the refrigerant quantity diagnosis device in the multi-split air-conditioning system, the receiving module receives a user instruction, when the user instruction received by the receiving module is a refrigerant quantity diagnosis instruction, the temperature obtaining module obtains the outdoor environment temperature, then the first judging module judges whether the outdoor environment temperature is greater than a first preset temperature and less than or equal to a second preset temperature, when the outdoor environment temperature is greater than the first preset temperature and less than or equal to the second preset temperature, the diagnosis control module controls the multi-split air-conditioning system to operate in a refrigeration test mode, when the startup operation time of the multi-split air-conditioning system is greater than or equal to the first preset time, the parameter obtaining module obtains the operation parameters of the multi-split air-conditioning system every second preset time, the second judging module judges whether the multi-split air-conditioning system is in a stable operation state according to the operation parameters of the multi-split air-conditioning system, when the multi-split air-conditioning system is in, the diagnosis control module diagnoses the refrigerant quantity according to the operation parameters of the multi-split system and controls the display module to display the diagnosis result. Therefore, the device can avoid the influence of too much or too little refrigerant on the reliability and comfort of the system.
In addition, an embodiment of the present invention also proposes a non-transitory computer-readable storage medium on which a computer program is stored, which when executed by a processor implements the above-mentioned diagnostic method.
By executing the diagnosis method, the non-transitory computer-readable storage medium of the embodiment of the invention can avoid the influence of too much or too little refrigerant on the reliability and comfort of the system.
In addition, an embodiment of the present invention further provides a multi-split system, which includes the apparatus for diagnosing the refrigerant quantity in the multi-split system.
According to the multi-split system provided by the embodiment of the invention, through the diagnostic device for the refrigerant quantity in the multi-split system, the influence of too much or too little refrigerant quantity on the reliability and comfort of the system can be avoided.
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 are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present invention 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 present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., 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. 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 invention 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. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, 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.
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 device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
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 is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, 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 (12)
1. A method for diagnosing the refrigerant quantity in a multi-split system is characterized by comprising the following steps:
when a refrigerant quantity diagnosis instruction is received, acquiring an outdoor environment temperature, and judging whether the outdoor environment temperature is greater than a first preset temperature and less than or equal to a second preset temperature;
if the outdoor environment temperature is greater than the first preset temperature and less than or equal to the second preset temperature, controlling the multi-split air-conditioning system to operate in a refrigeration test mode, wherein when the multi-split air-conditioning system operates in the refrigeration test mode, each indoor unit in the multi-split air-conditioning system is forcibly controlled to operate in a refrigeration mode, and a first timer is controlled to start timing the total diagnosis time;
when the starting-up running time of the multi-split air-conditioning system is greater than or equal to a first preset time, the total diagnosis time is less than or equal to a third preset time, the starting-up proportion of the refrigeration indoor unit is greater than a preset proportion, and the single-cycle accumulated time is greater than or equal to a second preset time, obtaining the running parameters of the multi-split air-conditioning system every other second preset time, and judging whether the multi-split air-conditioning system is in a stable running state or not according to the running parameters of the multi-split air-conditioning system;
and if the multi-split air-conditioning system is in a stable operation state, diagnosing the refrigerant quantity according to the operation parameters of the multi-split air-conditioning system, and displaying a diagnosis result, wherein in the process of diagnosing the refrigerant quantity, if the total diagnosis time is longer than the third preset time, the refrigerant quantity is not diagnosed.
2. The method for diagnosing the amount of refrigerant in a multi-split system as claimed in claim 1, wherein,
and when the total diagnosis time is greater than the third preset time, displaying prompt information that the multi-split system cannot be stable and cannot be diagnosed.
3. The method for diagnosing the amount of refrigerant in a multi-split system as claimed in claim 2, wherein in the process of diagnosing the amount of refrigerant, if the turn-on ratio of the refrigerating indoor units is less than or equal to a preset ratio, a prompt message indicating that the turn-on ratio of the indoor units is too low to be diagnosed is displayed.
4. The method for diagnosing the amount of refrigerant in a multi-split air-conditioning system as claimed in any one of claims 1 to 3, wherein in the process of diagnosing the amount of refrigerant, if a quit diagnosis instruction is received, the multi-split air-conditioning system is controlled to stop diagnosing the amount of refrigerant.
5. The method for diagnosing the amount of refrigerant in a multi-split system as claimed in claim 1, wherein when the outdoor ambient temperature is less than or equal to the first preset temperature or greater than the second preset temperature, a prompt message indicating that the outdoor temperature is abnormal and diagnosis cannot be performed is displayed.
6. A non-transitory computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the diagnostic method according to any one of claims 1 to 5.
7. A diagnostic device for refrigerant quantity in a multi-split system is characterized by comprising:
the receiving module is used for receiving a user instruction;
the temperature acquisition module is used for acquiring the outdoor environment temperature when the user instruction received by the receiving module is a refrigerant quantity diagnosis instruction;
the first judgment module is used for judging whether the outdoor environment temperature is greater than a first preset temperature and less than or equal to a second preset temperature;
the diagnosis control module is used for controlling the multi-split air conditioning system to operate in a refrigeration test mode when the outdoor environment temperature is greater than the first preset temperature and less than or equal to the second preset temperature, wherein when the multi-split air conditioning system operates in the refrigeration test mode, the diagnosis control module is also used for forcibly controlling each indoor unit in the multi-split air conditioning system to operate in a refrigeration mode and controlling a first timer to start timing the total diagnosis time;
the third judging module is used for judging whether the total diagnosis time is less than or equal to a third preset time or not;
the fourth judgment module is used for judging whether the starting-up proportion of the refrigeration indoor unit is greater than the preset proportion;
the parameter acquisition module is used for acquiring the operation parameters of the multi-split air-conditioning system at intervals of second preset time when the startup operation time of the multi-split air-conditioning system is more than or equal to first preset time, the total diagnosis time is less than or equal to third preset time, the startup proportion of the refrigeration indoor unit is more than the preset proportion, and the single-cycle accumulated time is more than or equal to the second preset time;
the second judgment module is used for judging whether the multi-split system is in a stable operation state or not according to the operation parameters of the multi-split system;
a display module;
the diagnosis control module is further configured to diagnose the refrigerant quantity according to the operation parameters of the multi-split air-conditioning system when the multi-split air-conditioning system is in a stable operation state, and control the display module to display a diagnosis result, wherein in the process of diagnosing the refrigerant quantity, when the third judgment module judges that the total diagnosis time is longer than the third preset time, the diagnosis control module does not diagnose the refrigerant quantity.
8. The apparatus for diagnosing an amount of refrigerant in a multi-split system as claimed in claim 7,
and when the total diagnosis time is longer than the third preset time, the diagnosis control module controls the display module to display prompt information that the multi-online system cannot be stable and cannot perform diagnosis.
9. The apparatus for diagnosing an amount of refrigerant in a multi-split system as claimed in claim 8,
and if the starting proportion of the refrigeration indoor unit is smaller than or equal to the preset proportion, the diagnosis control module controls the display module to display prompt information that the starting proportion of the indoor unit is too small and diagnosis cannot be performed.
10. The apparatus for diagnosing an amount of refrigerant in a multi-split air-conditioning system as claimed in any one of claims 7 to 9, wherein the diagnosis control module controls the multi-split air-conditioning system to stop diagnosing the amount of refrigerant if the user command received by the receiving module is a diagnosis exit command during the process of diagnosing the amount of refrigerant.
11. The apparatus as claimed in claim 7, wherein the diagnosis control module is further configured to control the display module to display a prompt indicating that the outdoor temperature is abnormal and the diagnosis cannot be performed when the outdoor environment temperature is less than or equal to the first preset temperature or greater than the second preset temperature.
12. A multi-split system, comprising the apparatus for diagnosing the amount of refrigerant in the multi-split system as set forth in any one of claims 7 to 11.
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| CN108518808B (en) * | 2018-06-12 | 2020-08-04 | 广东美的暖通设备有限公司 | Control method and device of air conditioner and air conditioner with control device |
| CN111397086B (en) * | 2020-03-25 | 2021-06-04 | 珠海格力电器股份有限公司 | Refrigerant detection method and device for air conditioning system, air conditioner and storage medium |
| CN115164379B (en) * | 2022-06-09 | 2023-11-10 | 珠海格力电器股份有限公司 | Air conditioner refrigerant quantity prediction method and system and air conditioner |
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