Air conditioner and method for controlling same

Abstract

This air conditioner comprises: a memory storing at least one instruction; and at least one processor including a processing circuit and configured to execute the at least one instruction, wherein the at least one instruction is individually or collectively executed by the at least one processor, so that the air conditioner: assigns, while each of one or more operations of the air conditioner is being performed, a score to a parameter related to a variation in a refrigerant amount on the basis of whether the parameter corresponds to a predetermined condition at every predetermined time; obtains, on the basis of the score assigned to the parameter at every predetermined time, one or more average scores respectively corresponding to the one or more operations; obtains a refrigerant amount state score on the basis of the one or more average scores respectively corresponding to the one or more operations; and provides a notification regarding a refrigerant amount state on the basis of the refrigerant amount state score.

Description

Air conditioner and its control method

[0001] One embodiment of the present disclosure relates to an air conditioner, a method for controlling the air conditioner, and a computer-readable recording medium having recorded thereon a program for performing the air conditioner control method on a computer.

[0002] An air conditioner can regulate air conditions, such as temperature, humidity, and cleanliness. Typically, an air conditioner includes a heat pump device consisting of a compressor, a condenser, an expansion device, and an evaporator. The heat pump device can be controlled to compress, condense, expand, and evaporate a refrigerant, thereby driving the refrigerant cycle.

[0003] In the case of air conditioners, if the refrigerant level within the heat pump unit is insufficient, the performance of the air conditioner can be significantly reduced, and in more severe cases, there is a risk of damage. Accordingly, various methods have been proposed to check and monitor the refrigerant level within the heat pump unit.

[0004] For example, air conditioners can use AI models or algorithms to monitor the refrigerant level in a measurement mode separate from the normal operation mode. However, the air conditioner's measurement mode operates separately from the normal operation mode, and users must repeatedly perform the measurement mode to determine the refrigerant level, which is time-consuming. Furthermore, even through the measurement mode, only the presence of a refrigerant leak can be detected, making it difficult to monitor the current refrigerant level (e.g., whether it is decreasing) in real time.

[0005] For example, an air conditioner can alert the user when the refrigerant level is low even during normal operation. However, this alert occurs after the user has already complained about the low refrigerant level, which can reduce user convenience.

[0006] Alternatively, for example, if an air conditioner has a pressure sensor, the air conditioner can use this sensor to determine the refrigerant level. However, even in this case, it only detects whether the refrigerant is leaking, making it difficult to monitor the current refrigerant level in real time.

[0007] An air conditioner according to one embodiment of the present disclosure includes a memory and a processing circuit storing at least one instruction, and at least one processor configured to execute the at least one instruction.

[0008] In one embodiment of the present disclosure, the at least one instruction is individually or collectively executed by the at least one processor, so that the air conditioner assigns a score to a parameter related to a change in the amount of refrigerant at predetermined intervals during each of one or more operations of the air conditioner, based on whether the parameter corresponds to a predetermined condition.

[0009] In one embodiment of the present disclosure, the at least one instruction is individually or collectively executed by the at least one processor, whereby the air conditioner obtains one or more average scores corresponding to each of the one or more operations based on the scores assigned to the parameter at each predetermined time.

[0010] In one embodiment of the present disclosure, the at least one instruction is individually or collectively executed by the at least one processor, whereby the air conditioner obtains a refrigerant quantity status score based on the one or more average scores corresponding to each of the one or more operations.

[0011] In one embodiment of the present disclosure, the at least one instruction is individually or collectively executed by the at least one processor, whereby the air conditioner provides a notification regarding the refrigerant quantity status based on the refrigerant quantity status score.

[0012] A method for controlling an air conditioner according to one embodiment of the present disclosure includes the steps of: assigning a score to a parameter related to a change in refrigerant amount at predetermined intervals while each of one or more operations of the air conditioner is performed, based on whether the parameter corresponds to a predetermined condition; obtaining one or more average scores corresponding to each of the one or more operations based on the score assigned to the parameter at each predetermined interval; obtaining a refrigerant amount status score based on the one or more average scores corresponding to each of the one or more operations; and providing a notification regarding a refrigerant amount status based on the refrigerant amount status score.

[0013] A computer-readable recording medium having recorded thereon a program for performing a method for controlling an air conditioner according to one embodiment of the present disclosure on a computer is provided.

[0014] The features of one embodiment of the present disclosure can be more clearly understood through the following description taken in conjunction with the accompanying drawings.

[0015] FIG. 1 is a drawing showing the operation of an air conditioner according to one embodiment of the present disclosure.

[0016] Figure 2 is a graph showing parameter changes according to the amount of refrigerant according to one embodiment of the present disclosure.

[0017] Figure 3 is a block diagram of an air conditioner according to one embodiment of the present disclosure.

[0018] FIG. 4 is a block diagram of an air conditioner for identifying multiple parameters according to one embodiment of the present disclosure.

[0019] Fig. 5 is a flowchart illustrating a method for controlling an air conditioner according to one embodiment of the present disclosure.

[0020] FIG. 6 is a flowchart illustrating a method for calculating an average score while an air conditioner performs one operation according to one embodiment of the present disclosure.

[0021] FIG. 7 is a table showing an example of scores assigned to each parameter according to one embodiment of the present disclosure.

[0022] FIG. 8 is a table showing an example of an average score calculated while an air conditioner performs one operation according to one embodiment of the present disclosure.

[0023] FIG. 9 is a table showing an example of refrigerant quantity status scores calculated while an air conditioner performs multiple operations according to one embodiment of the present disclosure.

[0024] FIG. 10 is a graph showing the average score and refrigerant amount status score per driving cycle according to one embodiment of the present disclosure.

[0025] FIG. 11 is a graph for explaining the relationship between the refrigerant amount status score and the refrigerant amount change of an air conditioner according to one embodiment of the present disclosure.

[0026] FIG. 12 is a diagram illustrating the operation of an air conditioner and a server according to one embodiment of the present disclosure.

[0027] Figure 13 is a block diagram of a server according to one embodiment of the present disclosure.

[0028] Fig. 14 is a detailed block diagram of an air conditioner according to one embodiment of the present disclosure.

[0029] It should be understood that the various embodiments and terms used in this document are not intended to limit the technical features described in this document to specific embodiments, but rather to include various modifications, equivalents, or substitutes of the embodiments.

[0030] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0031] The singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0032] In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in that phrase, or all possible combinations thereof.

[0033] The term “and / or” includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0034] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish one component from another and do not qualify the components in any other respect (e.g., importance or order).

[0035] When a component (e.g., a first component) is referred to as being "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0036] The terms “include” or “have” are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in this document, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0037] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0038] When we say that a component is “on” another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0039] Hereinafter, air conditioners according to various embodiments will be specifically described with reference to the drawings.

[0040] FIG. 1 is a drawing showing the operation of an air conditioner according to one embodiment of the present disclosure.

[0041] Referring to FIG. 1, an air conditioner (1000) according to one embodiment of the present disclosure is a device that performs functions such as air purification, ventilation, humidity control, cooling, or heating in an air-conditioned space, and means a device having at least one of these functions.

[0042] An air conditioner (1000) according to one embodiment of the present disclosure can absorb heat from an air-conditioned space (hereinafter referred to as “indoor”) and release heat from the outside of the air-conditioned space (hereinafter referred to as “outdoor”) in order to cool the air-conditioned space that is the target of air conditioning.

[0043] According to one embodiment of the present disclosure, an air conditioner (1000) may include a heat pump device to perform a cooling function or a heating function. The heat pump device may include a refrigeration cycle in which a refrigerant is circulated along a compressor (10), an evaporator (20) (or a first heat exchanger), an expansion valve (30), and a condenser (40) (or a second heat exchanger). The air conditioner (1000) may include a refrigerant pipe (50) connecting the compressor (10), the evaporator (20), the expansion valve (30), and the condenser (40).

[0044] The evaporator (20) can perform heat exchange between the refrigerant and air by utilizing the phase change (e.g., evaporation) of the refrigerant. For example, the refrigerant flowing in the evaporator (20) can absorb heat from the air while evaporating. By blowing the cooled air through the cooled evaporator (20), the space can be cooled.

[0045] The condenser (40) can perform heat exchange between the refrigerant and air by utilizing the phase change (e.g., condensation) of the refrigerant. For example, while the refrigerant is condensing in the condenser (40), the refrigerant can release heat to the air. By blowing the heated air through the high-temperature condenser (40), the space can be heated.

[0046] That is, the air conditioner (1000) performs a cooling or heating function through a phase change process of the refrigerant circulating through the evaporator (20) and the condenser (40). For this circulation of the refrigerant, the air conditioner (1000) may include a compressor (10) that compresses the refrigerant. The compressor (10) can suck in refrigerant gas through an intake port and compress the refrigerant gas. The compressor (10) can discharge high-temperature, high-pressure refrigerant gas through an exhaust port.

[0047] The refrigerant may circulate in the order of a compressor (10), an evaporator (20), an expansion valve (30), and a condenser (40) through a refrigerant pipe (50), or may circulate in the order of a compressor (10), a condenser (40), an expansion valve (30), and an evaporator (20).

[0048] The expansion valve (30) can, for example, lower the temperature and pressure of the refrigerant by utilizing the throttling effect. The expansion valve (30) may include an orifice capable of reducing the cross-sectional area of ​​the flow path. The temperature and pressure of the refrigerant passing through the orifice may be lowered.

[0049] The expansion valve (30) may be implemented as an electronic expansion valve (EEV) that can control the degree of opening (i.e., the degree of opening of the valve), for example. The amount of refrigerant passing through the expansion valve (30) may be controlled depending on the degree of opening of the EEV. For example, 0% may mean that the valve is completely closed, and 100% may mean that the valve is completely open. As the degree of opening increases, the flow rate of the refrigerant may increase.

[0050] According to one embodiment of the present disclosure, the air conditioner (1000) can monitor in real time the amount of refrigerant circulating in the refrigerant pipe (50) (i.e., the amount of refrigerant) while the air conditioner (1000) is operating.

[0051] According to one embodiment of the present disclosure, the air conditioner (1000) can assign a score to a parameter related to a change in the amount of refrigerant at predetermined times during operation of the air conditioner (1000), depending on whether the parameter corresponds to a predetermined condition. The air conditioner (1000) can calculate (101) an average score during operation of the air conditioner (1000) based on the scores for the assigned parameters at predetermined times. The air conditioner (1000) can calculate (102) a refrigerant amount status score based on the average scores for each of multiple operations. The air conditioner (1000) can provide (103) a notification regarding the amount of refrigerant status based on the calculated amount of refrigerant status score. The amount of refrigerant status score can increase or decrease according to the change in the amount of refrigerant. For example, if the refrigerant condition score increases over time as driving cycles elapse, a refrigerant leak may be identified.

[0052] According to one embodiment of the present disclosure, a parameter may represent a sensing value, numerical value, data, signal, etc. of an air conditioner (1000) that changes when the amount of refrigerant changes within a heat pump device. For example, the predetermined condition may be a condition for a value, numerical value, data, signal, etc. of a parameter that changes in a certain pattern different from normal operation when the refrigerant leaks. The predetermined condition may correspond to a condition that appears when the parameter is in a refrigerant shortage state. The parameter according to one embodiment of the present disclosure may include one or more parameters. This is described in FIG. 2.

[0053] An air conditioner (1000) according to one embodiment of the present disclosure can identify parameters in real time while the air conditioner (1000) is operating, and can assign different scores to the parameters when they correspond to predetermined conditions and when they do not. For example, the air conditioner (1000) can assign a score corresponding to a refrigerant shortage state when the parameter corresponds to a predetermined condition. The air conditioner (1000) can identify a refrigerant shortage state based on the score corresponding to the refrigerant shortage state.

[0054] Referring to operation (101), the air conditioner (1000) according to one embodiment of the present disclosure can assign a score to a parameter at a predetermined time interval while the air conditioner (1000) is operating. That is, the score for the parameter can be assigned repeatedly at a predetermined time interval for a predetermined cycle while the air conditioner (1000) is operating. The air conditioner (1000) can obtain a plurality of scores by repeating the predetermined cycle during one operation, and can calculate an average score for one operation by averaging the plurality of scores. The air conditioner (1000) can obtain average scores for each of the multiple operations by calculating an average score over multiple operations. Referring to operation (102), the air conditioner (1000) can calculate a refrigerant amount status score by moving average the average scores for each of the multiple operations. Here, the refrigerant quantity status score may be a moving average of the average scores. This is specifically described in FIG. 3. The air conditioner (1000) can determine whether the calculated refrigerant quantity status score is equal to or greater than a threshold score, and if the refrigerant quantity status score is equal to or greater than the threshold score, it can determine that the refrigerant quantity is insufficient.

[0055] An air conditioner (1000) according to one embodiment of the present disclosure can score the refrigerant amount status in real time while operating. Since the air conditioner (1000) can constantly score the refrigerant amount status in a normal operating mode without monitoring the refrigerant amount through a separate refrigerant amount measurement mode, a user can easily manage the refrigerant amount of the air conditioner (1000). Since the user can check the refrigerant amount status every time the air conditioner (1000) is operated, if it is determined that the refrigerant is leaking, the air conditioner (1000) can be quickly inspected before a defect due to the refrigerant leak occurs.

[0056] Fig. 2 is a graph showing parameter changes according to refrigerant amount according to one embodiment of the present disclosure. By connecting Fig. 2 to Fig. 1, parameter changes according to refrigerant amount changes in an air conditioner (1000) will be described.

[0057] Graph (200) shows the cooling capacity of the air conditioner (1000) and the discharge temperature ('T) of the compressor (10) as the amount of refrigerant decreases. discharge ' shown.), the opening of the expansion valve (30), the outlet temperature of the evaporator (20) ('T evap_out ' shown.), and the inlet temperature ('T of the evaporator (20) evap_in ' is shown.) The change is shown. The horizontal axis of the graph (200) represents the amount of refrigerant, and the vertical axis represents the value of each parameter.

[0058] Referring to the graph (200), as the amount of refrigerant decreases, the cooling performance of the air conditioner (1000) may decrease. For example, when the amount of refrigerant is 100%, the cooling performance of the air conditioner (1000) may be 100%, and when the amount of refrigerant is 40%, the cooling performance of the air conditioner (1000) may be 60.6%. If the refrigerant of the air conditioner (1000) leaks, the cooling performance may decrease, resulting in an indoor temperature ('T room ' shown.) is the set temperature set by the user ('T setting' is not reached, or takes a long time to reach. This may be related to the first parameter of the present disclosure.

[0059] Referring to the graph (200), as the amount of refrigerant decreases, the outlet temperature of the evaporator (20) may increase, and the inlet temperature of the evaporator (20) may decrease. For example, when the amount of refrigerant is sufficient (e.g., 60% of the amount of refrigerant), the temperature difference between the outlet temperature and the inlet temperature of the evaporator (20) may be small due to latent heat exchange (e.g., change from liquid refrigerant to gaseous refrigerant) of the evaporator (20). When the amount of refrigerant is insufficient, sensible heat exchange (e.g., change from low-temperature gaseous refrigerant to high-temperature gaseous refrigerant) occurs after latent heat exchange, so that the outlet temperature of the evaporator (20) may become higher than the inlet temperature of the evaporator (20). This may be related to the second parameter of the present disclosure.

[0060] Meanwhile, although not shown in the graph (200), if the amount of refrigerant is significantly insufficient (e.g., 10% of the amount of refrigerant), the temperature of the evaporator (20) (i.e., the inlet temperature and the outlet temperature of the evaporator (20)) may significantly increase. For example, if the amount of refrigerant is significantly insufficient, the temperature difference between the indoor temperature and the inlet temperature of the evaporator (20) and the temperature difference between the indoor temperature and the outlet temperature of the evaporator (20) may be small because cold refrigerant does not flow into the evaporator (20). This may be related to the third parameter of the present disclosure.

[0061] Meanwhile, in the present disclosure, the temperature of the evaporator (20) may be referred to as the inlet temperature of the evaporator (20) and the outlet temperature of the evaporator (20).

[0062] Referring to the graph (200), as the amount of refrigerant decreases, the opening degree of the expansion valve (30) may increase. For example, when the amount of refrigerant is 100%, the opening degree of the expansion valve (30) may be 289, and when the amount of refrigerant is 40%, the opening degree of the expansion valve (30) may be 480. Here, when the opening degree of the expansion valve (30) is 480, the valve may be in a fully open state (i.e., 100%). Since the amount of refrigerant circulated decreases as the amount of refrigerant in the refrigerant pipe (50) becomes insufficient, the air conditioner (1000) may control the expansion valve (30) to be in a fully open state to increase the amount of refrigerant circulated. This may be related to the fourth parameter of the present disclosure.

[0063] Referring to the graph (200), as the amount of refrigerant decreases, the discharge temperature of the compressor (10) may increase. For example, when the amount of refrigerant is 100%, the discharge temperature of the compressor (10) is 72.5 degrees, and when the amount of refrigerant is 40%, the discharge temperature of the compressor (10) may rise to 95 degrees. The refrigerant circulating in the refrigerant pipe (50) serves to cool the compressor (10), and when the amount of refrigerant becomes insufficient, the temperature of the compressor (10) rises, and the temperature of the refrigerant being compressed (i.e., the discharge temperature of the compressor (10)) also rises. When the discharge temperature rises above a predetermined temperature (e.g., 95 degrees), the air conditioner (1000) may enter a protection control mode that adjusts the speed of the compressor (10). The air conditioner (1000) may generate a protection control signal that controls the compressor (10) to lower the rotation speed of the compressor (10). This may be related to the fifth parameter of the present disclosure.

[0064] Meanwhile, when the amount of refrigerant decreases, the air conditioner (1000) may enter a protective control mode for anti-freezing control. For example, when the medium-temperature, medium-pressure refrigerant that has passed through the condenser (40) passes through the expansion valve (30), it changes into a low-temperature, low-pressure refrigerant due to a throttling phenomenon and may be circulated to the evaporator (20). However, when the refrigerant is insufficient, the refrigerant temperature may drop excessively during the throttling phenomenon and may circulate through the evaporator (20) in a sub-zero refrigerant state. When the evaporator (20) has a sub-zero temperature, the condensate outside the evaporator (20) freezes (i.e., in a frozen state). In order to prevent such freezing, the air conditioner (1000) may enter a protective control mode that adjusts the speed of the compressor (10) when the temperature of the evaporator (20) drops below zero. The air conditioner (1000) can generate a protective control signal that controls the compressor (10) to lower the rotation speed of the compressor (10). This may be related to the sixth parameter of the present disclosure.

[0065] Figure 3 is a block diagram of an air conditioner according to one embodiment of the present disclosure.

[0066] Referring to FIG. 3, an air conditioner (1000) according to one embodiment of the present disclosure may include a processor (1100) and a memory (1200). However, not all components illustrated in FIG. 3 are essential components. The air conditioner (1000) may be implemented with more components than those illustrated in FIG. 3, or may be implemented with fewer components.

[0067] The processor (1100) can typically control the overall operation of the air conditioner (1000). The processor (1100) can control the overall operation of the air conditioner (1000) by executing programs stored in the memory (1200). The processor (1100) can include at least one processor. At least one processor can individually or collectively execute programs or instructions stored in the memory (1200).

[0068] The memory (1200) stores various information, data, instructions, programs, etc. required for the operation of the air conditioner (1000). The memory (1200) may include at least one of volatile memory and non-volatile memory, or a combination thereof.

[0069] The memory (1200) can store / remember various information necessary for the operation of the air conditioner (1000). The memory (1200) can store instructions, applications, data, and / or programs necessary for the operation of the air conditioner (1000). For example, the memory (1200) can store various programs for cooling operation, heating operation, dehumidification operation, and / or defrosting operation of the air conditioner (1000). The memory (1200) can include a volatile memory (1200) such as an S-RAM (Static Random Access Memory) and a D-RAM (Dynamic Random Access Memory) for temporarily storing data. Additionally, the memory (1200) may include non-volatile memory such as ROM (Read Only Memory), EPROM (Erasable Programmable Read Only Memory), and EEPROM (Electrically Erasable Programmable Read Only Memory) for storing data for a long period of time.

[0070] The processor (1100) may generate a control signal for controlling the operation of the air conditioner (1000) based on instructions, applications, data, and / or programs stored in the memory (1200). The processor (1100) may be hardware and include logic circuits and arithmetic circuits. The processor (1100) may process data according to the program and / or instructions provided from the memory (1200) and generate a control signal according to the processing result. The memory (1200) and the processor (1100) may be implemented as a single control circuit or as multiple circuits.

[0071] According to one embodiment of the present disclosure, a processor (1100) may assign a score to a parameter related to a change in refrigerant amount at predetermined intervals during operation of an air conditioner (1000) by executing at least one instruction, depending on whether the parameter corresponds to a predetermined condition. The processor (1100) may calculate an average score during operation of the air conditioner based on the score for the parameter assigned at predetermined intervals. The processor (1100) may calculate a refrigerant amount status score based on the average scores for each of a plurality of operations. The processor (1100) may provide a notification to a user regarding a change in refrigerant amount based on the calculated refrigerant amount status score. The refrigerant amount status score may increase or decrease according to the change in refrigerant amount. For example, if the refrigerant amount status score increases as the number of operations elapses, it may be identified that refrigerant has leaked.

[0072] In the present disclosure, assigning a score to a parameter may correspond to determining a score for the parameter, awarding a score for the parameter, etc.

[0073] According to one embodiment of the present disclosure, a parameter may represent a sensing value, numerical value, data, signal, etc. of a processor (1100) that changes when the amount of refrigerant changes within a heat pump device. For example, a predetermined condition may be a condition for a value, numerical value, data, signal, etc. of a parameter that changes in a certain pattern different from normal operation when a refrigerant leaks. The predetermined condition may correspond to a condition that appears when the parameter is in a refrigerant shortage state. A parameter according to one embodiment of the present disclosure may include one or more parameters. In the present disclosure, a parameter may include one or more parameters. Specific examples for each parameter and the predetermined condition are further described in FIG. 4.

[0074] According to one embodiment of the present disclosure, the processor (1100) can identify parameters in real time while the processor (1100) is operating, and can assign different scores to the parameters when they correspond to predetermined conditions and when they do not. For example, the processor (1100) can assign a score corresponding to a refrigerant shortage state when the parameter corresponds to a predetermined condition. The processor (1100) can identify that the refrigerant is insufficient based on the score corresponding to the refrigerant shortage state.

[0075] In the present disclosure, a score corresponding to a state of insufficient refrigerant may correspond to a score assigned when a parameter corresponds to a predetermined condition.

[0076] For example, if a parameter corresponds to a predetermined condition, the assigned score (i.e., the score corresponding to a refrigerant shortage condition) may be set to a relatively high score. If the parameter does not correspond to a predetermined condition, the assigned score may be set to a relatively low score. The processor (1100) may be set to identify a refrigerant shortage condition as a higher refrigerant quantity condition score. This is described in FIG. 7.

[0077] Meanwhile, the score assigned when a parameter corresponds to a predetermined condition (i.e., the score corresponding to a refrigerant shortage condition) may vary depending on the implementation example. For example, the score assigned when a parameter corresponds to a predetermined condition may be set to a relatively low score. In this case, the processor (1100) may identify a refrigerant shortage condition as a lower refrigerant quantity condition score.

[0078] According to one embodiment of the present disclosure, a processor (1100) may assign a score to a parameter at predetermined intervals while the air conditioner (1000) is operating. That is, the score for the parameter may be assigned repeatedly at predetermined time intervals for a predetermined period while the air conditioner (1000) is operating. The processor (1100) may obtain a plurality of scores by repeating the process for a predetermined period during one operation, and may calculate an average score for one operation by averaging the plurality of scores. The processor (1100) may obtain average scores for each of the plurality of operations by calculating an average score over multiple operations. The processor (1100) may provide a notification to the user regarding a refrigerant shortage condition.

[0079] In the present disclosure, the meaning of while the air conditioner (1000) is operating may mean a period from the time when the air conditioner (1000) starts operating to the time when the operation ends. The operating operation of the air conditioner (1000) may correspond to the operation of the compressor. For example, when the processor (1100) controls the compressor so that the compressor rotates at a predetermined frequency, it may be said that the air conditioner (1000) is operating. While the air conditioner (1000) is operating, the compressor may rotate at a predetermined frequency. When the processor (1100) controls the compressor so that the compressor stops rotating, it may be said that the air conditioner (1000) is terminating operation. When the air conditioner (1000) terminates operation, the compressor may stop starting.

[0080] According to one embodiment of the present disclosure, the processor (1100) can assign a score to a parameter every k minutes from the time the air conditioner (1000) starts operating (where k is a positive integer). For example, if the air conditioner (1000) operates for 5 minutes and identifies a parameter and assigns a score every minute, 5 scores can be assigned. That is, the processor (1100) can assign scores to parameters five times repeatedly during one operation. The processor (1100) can obtain an average score for the operation by calculating an average of the 5 scores. This is described in FIG. 8.

[0081] According to one embodiment of the present disclosure, a processor (1100) may calculate a refrigerant quantity status score by performing a moving average of the average scores for each of multiple operations. Here, the refrigerant quantity status score may be a moving average value of the average scores. The processor (1100) may determine whether the calculated refrigerant quantity status score is equal to or greater than a threshold score, and if the refrigerant quantity status score is equal to or greater than the threshold score, determine that the refrigerant quantity is insufficient.

[0082] In the present disclosure, a moving average may be an average of data that changes over time. For example, the processor (1100) may calculate a refrigerant quantity status score by performing a moving average on n average scores calculated through n previous operations (where n is a natural number). However, the method for calculating the moving average value is not limited to the example described above. The processor (1100) may minimize the deviation of the average scores by calculating a moving average value on the average scores. The processor (1100) may identify the refrigerant quantity status through a refrigerant quantity status score that exhibits a similar trend to the refrigerant quantity status. This will be described in FIG. 9.

[0083] A processor (1100) according to one embodiment of the present disclosure can score the refrigerant amount status in real time while performing operation. Since the processor (1100) can constantly score the refrigerant amount status in a normal operation mode without monitoring the refrigerant amount through a separate refrigerant amount measurement mode, a user can easily manage the refrigerant amount of the processor (1100). Since a user can check the refrigerant amount status every time the air conditioner (1000) is operated, the user can quickly inspect the air conditioner (1000) if it is determined that the refrigerant is leaking, even before a malfunction due to the refrigerant leak occurs.

[0084] FIG. 4 is a block diagram of an air conditioner for identifying multiple parameters according to one embodiment of the present disclosure.

[0085] Referring to FIG. 4, an air conditioner (1000) according to one embodiment of the present disclosure may include a compressor (10), an evaporator (20), an expansion valve (30), a processor (1100), a memory (1200), a temperature sensor (1710), a refrigerant temperature sensor (1720), and an output interface (1500). However, not all of the components illustrated in FIG. 4 are essential components. The air conditioner (1000) may be implemented with more components than the components illustrated in FIG. 4, or may be implemented with fewer components.

[0086] The compressor (10), evaporator (20), and expansion valve (30) are described in Fig. 1.

[0087] The temperature sensor (1710) may be a sensor for sensing the temperature of the air, which is placed in a predetermined space inside or outside the housing of the indoor or outdoor unit. For example, the temperature sensor (1710) may be placed inside or outside the housing of the indoor unit, and may sense the indoor temperature (e.g., T room ) may include an indoor temperature sensor that senses the indoor temperature. The processor (1100) may receive the indoor temperature from the indoor temperature sensor.

[0088] The refrigerant temperature sensor (1720) may be a sensor for detecting the refrigerant temperature of the refrigerant pipe. For example, the refrigerant temperature sensor (1720) may include each refrigerant temperature sensor that detects the inlet, middle, and / or outlet temperatures of the refrigerant pipe passing through the heat exchanger. For example, the refrigerant temperature sensor (1720) may include a first refrigerant temperature sensor located at the inlet of the evaporator (20). The first refrigerant temperature sensor may detect the inlet temperature (e.g., T) of the evaporator (20). evap_in ) can be sensed. For example, the refrigerant temperature sensor (1720) may include a second refrigerant temperature sensor located at the outlet of the evaporator (20). The second refrigerant temperature sensor may sense the outlet temperature of the evaporator (20) (e.g., T evap_out) can be sensed. For example, the refrigerant temperature sensor (1720) may include a third refrigerant temperature sensor located at the discharge end of the compressor (10). The third refrigerant temperature sensor may sense the discharge temperature (e.g., T) of the compressor (10). discharge ) can be sensed. The processor (1100) can receive at least one of the inlet temperature of the evaporator (20), the outlet temperature of the evaporator (20), or the discharge temperature of the compressor (10) from the refrigerant temperature sensor (1720).

[0089] The output interface (1500) is electrically connected to the processor (1100) and can output information related to the operation of the air conditioner (1000) under the control of the processor (1100). For example, information such as the operating mode, wind direction, wind volume, and temperature selected by a user input can be output. In addition, the output interface (1500) can output sensing information acquired from a sensor and warning / error messages. For example, the output interface (1500) can output a notification regarding the refrigerant amount status.

[0090] The output interface (1500) may include a display and a speaker. The speaker, as an audio device, may output various sounds. The display may display information input by the user or information provided to the user using various graphic elements. For example, operation information of the air conditioner (1000) may be displayed as at least one of an image or text. In addition, the display may include an indicator that provides specific information. The display may include an LCD panel (Liquid Crystal Display Panel), an LED panel (Light Emitting Diode Panel), an OLED panel (Organic Light Emitting Diode Panel), a micro LED panel, and / or a plurality of LEDs.

[0091] A processor (1100) according to one embodiment of the present disclosure can identify a plurality of parameters. The processor (1100) can assign a score to each of the plurality of parameters based on whether each of the plurality of parameters corresponds to a predetermined condition. The processor (1100) can store the score for each of the plurality of parameters in each data item. For example, the processor (1100) can identify a parameter that changes in a certain pattern compared to normal operation when a refrigerant leaks. Alternatively, for example, the processor (1100) can identify a protective control signal generated by the processor (1100) when a refrigerant leaks.

[0092] According to one embodiment of the present disclosure, a parameter may indicate at least one of a temperature difference between an indoor temperature and a set temperature, a temperature difference between an inlet temperature of an evaporator and an outlet temperature of the evaporator, a temperature difference between an indoor temperature and an inlet temperature and / or an outlet temperature of the evaporator, an opening degree of an expansion valve, or whether a protection control signal for an air conditioner (1000) is generated.

[0093] According to one embodiment of the present disclosure, a processor (1100) can identify whether the indoor temperature received from an indoor temperature sensor is higher than a set temperature. If the processor (1100) determines that the indoor temperature is higher than the set temperature, it can assign a score corresponding to a refrigerant shortage condition. The processor (1100) can store a score regarding the temperature difference between the indoor temperature and the set temperature (hereinafter, referred to as the "first parameter") in a first item.

[0094] According to one embodiment of the present disclosure, a processor (1100) can identify whether an outlet temperature received from a second refrigerant temperature sensor is higher than an inlet temperature of an evaporator (20) received from a first refrigerant temperature sensor. When the processor (1100) determines that the outlet temperature is higher than the inlet temperature, the processor (1100) can assign a score corresponding to a refrigerant shortage state. The processor (1100) can store a score regarding a temperature difference between the outlet temperature and the inlet temperature of the evaporator (20) (hereinafter, referred to as a "second parameter") in a second item.

[0095] According to one embodiment of the present disclosure, a processor (1100) may identify whether a temperature difference between an indoor temperature received from an indoor temperature sensor and an inlet temperature received from a first refrigerant temperature sensor and / or a temperature difference between an indoor temperature and an outlet temperature received from a second refrigerant temperature sensor is less than a predetermined temperature difference. When the processor (1100) determines that the temperature difference is less than the predetermined temperature difference, the processor (1100) may assign a score corresponding to a refrigerant shortage state. The processor (1100) may store a score regarding a temperature difference between an indoor temperature and a temperature of an evaporator (20) (hereinafter, referred to as a 'third parameter') in a third item.

[0096] A processor (1100) according to one embodiment of the present disclosure can identify whether the opening degree of the expansion valve (30) is higher than a predetermined opening degree. When the processor (1100) determines that the opening degree of the expansion valve (30) is higher than the predetermined opening degree, the processor (1100) can assign a score corresponding to a state of insufficient refrigerant. The processor (1100) can store a score related to the opening degree of the expansion valve (30) (hereinafter, referred to as the "fourth parameter") in the fourth item.

[0097] According to one embodiment of the present disclosure, a processor (1100) can identify whether a protection control signal has been generated for an air conditioner (1000). Upon generating the protection control signal, the processor (1100) can assign a score corresponding to a refrigerant shortage condition. The processor (1100) can store a score regarding whether a protection control signal has been generated (hereinafter, referred to as the "fifth parameter") in a fifth item.

[0098] A specific example of the scores set to be assigned to each parameter is described in Fig. 7.

[0099] According to one embodiment of the present disclosure, the processor (1100) can calculate an average score per drive based on the scores for each parameter stored in each data item. For example, the processor (1100) can calculate an average score per drive by summing the scores for each of a plurality of stored parameters at predetermined intervals and dividing the summed scores by a predetermined period.

[0100] Fig. 5 is a flowchart illustrating a method for controlling an air conditioner according to one embodiment of the present disclosure.

[0101] Referring to FIG. 5, a method for controlling an air conditioner (1000) according to an embodiment of the present disclosure may include operations 510 to 540. Operations 510 to 540 may be performed by a processor (1100) of the air conditioner (1000). The method for controlling an air conditioner (1000) according to an embodiment of the present disclosure is not limited to that illustrated in FIG. 5, and any one of the steps illustrated in FIG. 5 may be omitted, or additional steps not illustrated in FIG. 5 may be included.

[0102] In operation 510, the air conditioner (1000) may assign a score to a parameter at predetermined time intervals while the air conditioner (1000) is operating, based on whether the parameter related to the change in the amount of refrigerant corresponds to a predetermined condition. In operation 520, the air conditioner (1000) may calculate an average score while the air conditioner (1000) is operating, based on the score assigned to the parameter at predetermined time intervals. The parameter may include one or more parameters.

[0103] The air conditioner (1000) may assign a score to a parameter related to a change in the amount of refrigerant at predetermined intervals while each of one or more operations of the air conditioner is performed, based on whether the parameter corresponds to a predetermined condition. The air conditioner (1000) may obtain one or more average scores corresponding to each of the one or more operations based on the scores assigned to the parameter at predetermined intervals.

[0104] Referring to FIG. 6, a method for assigning a score to each of a plurality of parameters and calculating an average score while the air conditioner (1000) according to one embodiment of the present disclosure performs one operation will be described. Operations 610 to 670 may be performed by the processor (1100) of the air conditioner (1000). The method for assigning a score to each of a plurality of parameters while the air conditioner (1000) performs one operation may include, but is not limited to, operations 610 to 650. The method for calculating an average score while the air conditioner (1000) performs one operation may include, but is not limited to, operations 660 to 670. Any one of the steps illustrated in FIG. 6 may be omitted, and steps not illustrated in FIG. 6 may be further included.

[0105] The air conditioner (1000) can identify each of the plurality of parameters and assign a score to each of the plurality of parameters based on whether each of the plurality of parameters corresponds to a predetermined condition. The air conditioner (1000) can store the score for each of the plurality of parameters in each data item.

[0106] In operation 610, the air conditioner (1000) can assign a score to the temperature difference (first parameter) between the indoor temperature and the set temperature by identifying whether the indoor temperature is higher than the set temperature, and store the score in the first item. That is, the air conditioner (1000) can assign a score to the first parameter by identifying whether the first parameter corresponds to a predetermined condition.

[0107] In operation 620, the air conditioner (1000) can assign a score for the temperature difference between the outlet temperature and the inlet temperature (second parameter) by identifying whether the outlet temperature of the evaporator is higher than the inlet temperature of the evaporator, and store the score in a second item. That is, the air conditioner (1000) can assign a score for the second parameter by identifying whether the second parameter corresponds to a predetermined condition.

[0108] In operation 630, the air conditioner (1000) can assign a score to the temperature difference between the indoor temperature and the temperature of the evaporator (the third parameter) by identifying whether the temperature difference between the indoor temperature and the temperature of the evaporator (i.e., the inlet temperature and the outlet temperature of the evaporator) is less than a predetermined temperature difference, and store the score in a third item. That is, the air conditioner (1000) can assign a score to the third parameter by identifying whether the third parameter corresponds to a predetermined condition.

[0109] In operation 640, the air conditioner (1000) can assign a score to the opening degree of the expansion valve (the fourth parameter) by identifying whether the opening degree of the expansion valve is higher than a predetermined opening degree and store the score in the fourth item. That is, the air conditioner (1000) can assign a score to the fourth parameter by identifying whether the fourth parameter corresponds to a predetermined condition.

[0110] In operation 650, the air conditioner (1000) can assign a score for whether a protection control signal is generated by identifying whether a protection control signal is generated, and store the score in a data item. For example, the air conditioner (1000) can assign a score for protection control due to an increase in the discharge temperature of the compressor (the fifth parameter) and store the assigned score in the fifth item. For example, the air conditioner (1000) can assign a score for protection control for preventing freezing of the evaporator (the sixth parameter) and store the assigned score in the sixth item.

[0111] At operation 660, the air conditioner (1000) may sum the scores for each of the plurality of parameters stored at predetermined intervals. At operation 670, the air conditioner (1000) may calculate an average score per operation by dividing the summed scores by a predetermined cycle. For example, the air conditioner (1000) may calculate an average score per operation based on the scores for each of the plurality of parameters stored in each data item.

[0112] Referring again to FIG. 5 , at operation 530, the air conditioner (1000) may calculate a refrigerant quantity condition score based on the average scores for each of the multiple operations. For example, the air conditioner (1000) may calculate the refrigerant quantity condition score by calculating a moving average of the average scores for each of the multiple operations. The air conditioner (1000) may obtain a refrigerant quantity condition score based on the one or more average scores corresponding to each of the one or more operations.

[0113] In operation 540, the air conditioner (1000) may provide a notification regarding the refrigerant level status based on the calculated refrigerant level status score. For example, the air conditioner (1000) may determine whether the refrigerant level status score is equal to or greater than a threshold score. If the refrigerant level status score is equal to or greater than the threshold score, the air conditioner (1000) may provide a notification regarding a refrigerant shortage status to the user via the output interface.

[0114] FIG. 7 is a table showing an example of scores assigned to each parameter according to one embodiment of the present disclosure.

[0115] Referring to the table (700) of Fig. 7, for example, the air conditioner (1000) is a temperature difference ('ΔT1(T)) between the indoor temperature and the set temperature. room -T setting )' can be identified. The cooling performance of the air conditioner (1000) decreases as the amount of refrigerant becomes insufficient, making it difficult for the indoor temperature to reach the set temperature. For example, the air conditioner (1000) can be set to assign -1 point when the indoor temperature is lower than or equal to the set temperature. For example, the air conditioner (1000) can be set to assign 1 point when the indoor temperature is higher than the set temperature.

[0116] For example, the air conditioner (1000) has a temperature difference ('ΔT2(T)') between the outlet temperature and the inlet temperature of the evaporator. evap_out -Tevap_in )' can be identified. The air conditioner (1000) may have a higher outlet temperature of the evaporator than the inlet temperature of the evaporator as the amount of refrigerant is insufficient. For example, the air conditioner (1000) may be set to assign a point of '(temperature difference between the outlet temperature and the inlet temperature) / 2' when the outlet temperature of the evaporator is higher than the inlet temperature. For example, the air conditioner (1000) may be set to assign a point of 0 when the outlet temperature of the evaporator is lower than or equal to the inlet temperature.

[0117] For example, the air conditioner (1000) has a temperature difference ('ΔT3(T)) between the room temperature and the temperature of the evaporator. room -T evap_in , T room -T evap_out )' can be compared with the predetermined temperature difference (the third parameter). As the amount of refrigerant in the air conditioner (1000) becomes insufficient, the temperature of the evaporator increases, and can approach the room temperature. For example, the air conditioner (1000) can be set to assign 5 points when the temperature difference between the room temperature and the temperature of the evaporator is less than 4.

[0118] For example, the air conditioner (1000) can compare the opening degree (fourth parameter) of the expansion valve with a predetermined opening degree. The air conditioner (1000) can open the opening degree of the expansion valve to the maximum degree as the amount of refrigerant is insufficient. For example, the air conditioner (1000) can be set to allocate 4 points when the opening degree of the expansion valve is 480 (i.e., maximum opening). For example, the air conditioner (1000) can be set to allocate 2 points when the opening degree of the expansion valve is between 440 and 480.

[0119] For example, the air conditioner (1000) can identify whether a protection control signal is generated (the fifth parameter and / or the sixth parameter). The air conditioner (1000) can enter a protection control mode when the amount of refrigerant is insufficient. For example, the air conditioner (1000) can be set to assign 2 points when a signal for entering the protection control mode is generated due to an increase in the discharge temperature of the compressor. For example, the air conditioner (1000) can be set to assign 0 points when it does not enter the protection control mode.

[0120] For example, the air conditioner (1000) may be set to assign a point of (the temperature difference between the outlet temperature and the inlet temperature) / 2' when a signal is generated to enter a protection control mode for preventing freezing of the evaporator. For example, the air conditioner (1000) may be set to assign a point of 0 when it does not enter the protection control mode.

[0121] An air conditioner (1000) according to one embodiment of the present disclosure may assign different scores in order of increasing influence in indicating a state of refrigerant leakage. For example, the air conditioner (1000) may be configured to assign the highest scores to the second and fourth parameters. For example, in the event of a refrigerant leakage, the difference between the inlet and outlet temperatures of the evaporator may be more likely to increase. For example, the expansion valve may be more likely to open to its maximum.

[0122] In addition, since the air conditioner (1000) identifies the refrigerant amount status in a general operation mode rather than in a separate measurement mode, the parameters change as the opening of the expansion valve or the frequency of the compressor changes. Accordingly, the air conditioner (1000) can be set to assign scores for the first parameter, the fourth parameter, the fifth parameter, and the sixth parameter.

[0123] FIG. 8 is a table showing an example of an average score calculated while an air conditioner performs one operation according to one embodiment of the present disclosure.

[0124] Referring to Table (800) of Fig. 8, a case is described where an air conditioner (1000) operates for 5 minutes and assigns scores to multiple parameters by identifying them every minute. The air conditioner (1000) can assign scores to multiple parameters five times during one operation.

[0125] The air conditioner (1000) can identify whether the first parameter ('ΔT1') corresponds to a predetermined condition at one-minute intervals. The air conditioner (1000) can repeat the operation of assigning a predetermined score (e.g., 1 point) to the first parameter and storing the assigned score in the first item five times.

[0126] The air conditioner (1000) can identify whether the second parameter ('ΔT2') corresponds to a predetermined condition at one-minute intervals. The air conditioner (1000) can repeat the operation of assigning a predetermined score to the second parameter and storing the assigned score in the second item five times.

[0127] The air conditioner (1000) can identify whether each of the third parameter ('ΔT3'), the fourth parameter (opening degree of the expansion valve), the fifth parameter (protective control due to an increase in compressor discharge temperature), and the sixth parameter (protective control for freezing prevention) corresponds to a predetermined condition at one-minute intervals. The air conditioner (1000) can assign a predetermined score to each of the third parameter, the fourth parameter, the fifth parameter, and the sixth parameter, and repeat the operation of storing the assigned score in each data item five times.

[0128] The air conditioner (1000) can obtain multiple scores for each of multiple parameters by repeating the process five times during a single operation, and can average the multiple scores. The air conditioner (1000) can calculate an overall total (e.g., 41 points) by adding the scores for the multiple parameters. The air conditioner (1000) can calculate an average score (e.g., 8.2 points) for a single operation by dividing the overall total (e.g., 41 points) by the cycle (e.g., 5 cycles).

[0129] In the table (800), the air conditioner (1000) is exemplified as calculating a total sum (e.g., 41 points) by adding up the scores for multiple parameters acquired at 1-minute intervals by minute and adding up the minute totals (e.g., 10 points, 9 points, 7 points, 8 points, 7 points), but is not limited thereto.

[0130] FIG. 9 is a table showing an example of refrigerant quantity status scores calculated while an air conditioner performs multiple operations according to one embodiment of the present disclosure.

[0131] Referring to table (900) of Fig. 9, a case in which the air conditioner (1000) calculates a refrigerant amount status score by calculating an average score for each operating cycle is described.

[0132] The air conditioner (1000) can calculate an average score for each operation (e.g., ID: 1 to ID: 8).

[0133] The air conditioner (1000) can calculate a refrigerant quantity status score by calculating a moving average of the average scores of multiple operations. For example, the air conditioner (1000) can calculate a moving average value for five average scores calculated through five previous operations.

[0134] The air conditioner (1000) can minimize the deviation of average scores by performing moving averages on the average scores. The air conditioner (1000) can identify the refrigerant quantity status through the refrigerant quantity status score, which shows a similar trend to the refrigerant quantity status.

[0135] FIG. 10 is a graph showing the average score and refrigerant amount status score per driving cycle according to one embodiment of the present disclosure.

[0136] Referring to FIG. 10, a graph (1001) shows an average score (1003) and a refrigerant quantity status score (1005) calculated during multiple operations. The horizontal axis of the graph (1001) may represent an operation number (ID), and the vertical axis may represent a score. Since the refrigerant quantity status score (1005) is a moving average value for the average scores (e.g., a moving average value of 5 times), there may be fewer sections in which the value changes rapidly than the average score (1003). That is, since the refrigerant quantity status score (1005) has less deviation than the average score (1003), a user can easily identify a change in the refrigerant quantity status through the refrigerant quantity status score (1005).

[0137] FIG. 11 is a graph for explaining the relationship between the refrigerant amount status score and the refrigerant amount change of an air conditioner according to one embodiment of the present disclosure.

[0138] Referring to FIG. 11, a graph (1101) represents a refrigerant quantity status score calculated during multiple operations. The horizontal axis of the graph (1101) may be the operation number (ID), and the vertical axis may be the score.

[0139] In a section (e.g., ID: 69) where the refrigerant quantity status score is greater than or equal to a critical score (e.g., 9 points), the air conditioner (1000) can identify a refrigerant shortage condition. In this case, the air conditioner (1000) can provide a notification to the user regarding the refrigerant shortage. The user can identify that a refrigerant leak has occurred in the air conditioner (1000). The user can repair the refrigerant leak by requesting service (1102) for the air conditioner (1000).

[0140] At a point where the refrigerant quantity condition score decreases (e.g., ID: 75), repairs are made to the air conditioner (1000) and the refrigerant leak can be eliminated (see Service Action (1104)). Thereafter, the air conditioner (1000) may identify that a re-leak has occurred at a point where the refrigerant quantity condition score increases again (e.g., ID: 115) (see Re-leak Occurrence (1106)).

[0141] FIG. 12 is a diagram illustrating the operation of an air conditioner and a server according to one embodiment of the present disclosure.

[0142] Referring to FIG. 12, a system according to one embodiment of the present disclosure may include an air conditioner (1000) and a server (2000).

[0143] An air conditioner (1000) according to one embodiment of the present disclosure can transmit operating data to a server (2000). For example, the air conditioner (1000) may include a communication module for communicating with the server (2000) or an external device. For example, the air conditioner (1000) may transmit operating data to the server (2000) using wireless communication such as Wi-Fi.

[0144] The air conditioner (1000) can store operating data acquired during operation in memory. For example, the operating data may be stored at predetermined intervals. For example, the operating data may be stored at one-minute intervals during operation. For example, the operating data may be stored as shown in table (800) of FIG. 8.

[0145] According to one embodiment of the present disclosure, a server (2000) can receive operating data from an air conditioner (1000) via a communication module. The server (2000) can assign a score to a parameter at predetermined intervals. For example, the server (2000) can assign a score to a parameter each time it receives operating data from the air conditioner (1000). The server (2000) can identify a parameter included in the operating data and assign a score to the parameter each time it receives operating data from the air conditioner (1000). The server (2000) can monitor the refrigerant amount status of the air conditioner (1000) based on the score assigned to the parameter.

[0146] For example, the server (2000) may assign a score to a parameter based on the operation data, depending on whether the parameter related to the change in the refrigerant amount corresponds to a predetermined condition. The server (2000) may calculate an average score for the operation of the air conditioner (1000) based on the score for the assigned parameter each time the operation data is received from the air conditioner (1000). The server (2000) may calculate a refrigerant amount status score based on the average scores for each of multiple operations. The server (2000) may provide a notification regarding the refrigerant amount status to the user based on the calculated refrigerant amount status score. For example, the server (2000) may transmit a notification regarding the refrigerant amount status to the air conditioner (1000). For example, the server (2000) may transmit a notification regarding the refrigerant amount status to an external device. The method by which the server (2000) calculates the refrigerant amount status score corresponds to the operation of the air conditioner (1000) according to FIGS. 1 to 12, and is therefore omitted.

[0147] Figure 13 is a block diagram of a server according to one embodiment of the present disclosure.

[0148] Referring to FIG. 13, a server (2000) according to one embodiment of the present disclosure may include a processor (2100), a memory (2200), and a communication module (2300). However, not all of the components illustrated in FIG. 13 are essential components. The server (2000) may be implemented with more components than the components illustrated in FIG. 13, or may be implemented with fewer components.

[0149] The processor (2100) can typically control the overall operation of the server (2000). The processor (2100) can control the overall operation of the server (2000) by executing programs stored in the memory (2200). The processor (2100) can include at least one processor.

[0150] The memory (2200) stores various information, data, instructions, programs, etc. required for the operation of the server (2000). The memory (2200) may include at least one of volatile memory and non-volatile memory, or a combination thereof.

[0151] The memory (2200) can store / remember various information necessary for the operation of the server (2000). The memory (2200) can store instructions, applications, data, and / or programs necessary for the operation of the server (2000). For example, the memory (2200) can store various programs for cooling operation, heating operation, dehumidification operation, and / or defrosting operation of an air conditioner. The memory (2200) can include volatile memory (2200) such as Static Random Access Memory (S-RAM) and Dynamic Random Access Memory (D-RAM) for temporarily storing data. In addition, the memory (2200) can include nonvolatile memory such as Read Only Memory (ROM), Erasable Programmable Read Only Memory (EPROM), and Electrically Erasable Programmable Read Only Memory (EEPROM) for long-term storage of data.

[0152] The processor (2100) may generate a control signal for controlling the operation of the server (2000) based on instructions, applications, data, and / or programs stored in the memory (2200). The processor (2100) may be hardware and include logic circuits and arithmetic circuits. The processor (2100) may process data according to programs and / or instructions provided from the memory (2200) and generate a control signal according to the processing results. The memory (2200) and the processor (2100) may be implemented as a single control circuit or as multiple circuits.

[0153] The communication module (2300) may include at least one of a short-range communication module and a long-range communication module. The communication module (2300) may include at least one antenna for wirelessly communicating with another device.

[0154] The short-range wireless communication module may include, but is not limited to, a Bluetooth communication module, a BLE (Bluetooth Low Energy) communication module, a near field communication module, a WLAN (Wi-Fi) communication module, a Zigbee communication module, an infrared (IrDA, infrared Data Association) communication module, a WFD (Wi-Fi Direct) communication module, an UWB (ultrawideband) communication module, an Ant+ communication module, a microwave (uWave) communication module, etc.

[0155] The remote communication module may include a communication module that performs various types of remote communication, and may include a mobile communication module. The mobile communication module transmits and receives wireless signals with at least one of a base station, an external terminal, and a server on a mobile communication network.

[0156] According to one embodiment of the present disclosure, a processor (2100) may assign a score to a parameter based on whether the parameter corresponds to a predetermined condition at a predetermined time interval by executing at least one instruction. Here, the predetermined time interval may mean a time when the server (2000) receives operation data from the air conditioner. The processor (2100) may calculate an average score while the air conditioner is being operated based on the score for the assigned parameter at a predetermined time interval. The processor (2100) may calculate a refrigerant amount status score based on the average scores for each of a plurality of operations. The processor (2100) may provide a notification regarding a change in the refrigerant amount based on the calculated refrigerant amount status score. The processor (2100) may transmit a notification regarding a change in the refrigerant amount to the air conditioner via the communication module (2300).

[0157] Fig. 14 is a detailed block diagram of an air conditioner according to one embodiment of the present disclosure.

[0158] Referring to FIG. 14, an air conditioner (1000) according to an embodiment of the present disclosure may include an indoor unit (1800), an outdoor unit (1300), an input interface (1400), an output interface (1500), a communication module (1600), a sensor (1700), a processor (1100), and a memory (1200). However, not all of the components illustrated in FIG. 14 are essential components. The air conditioner (1000) may be implemented with more components than the components illustrated in FIG. 14, or may be implemented with fewer components. The processor (1100) and the memory (1200) of FIG. 14 may correspond to the processor (1100) and the memory (1200) of FIG. 3, respectively. The temperature sensor (1710), the refrigerant temperature sensor (1720), and the output interface (1500) of FIG. 14 may correspond to the temperature sensor (1710), the refrigerant temperature sensor (1720), and the output interface (1500) of FIG. 4, respectively.

[0159] All components of a heat pump device may be built into a single housing forming the exterior of an air conditioner (1000), and a window-type air conditioner or a portable air conditioner may be an example of such an air conditioner (1000). On the other hand, some components of a heat pump device may be built into multiple housings forming a single air conditioner (1000), and this includes a wall-mounted air conditioner, a stand-alone air conditioner, a system air conditioner, etc.

[0160] An air conditioner (1000) including a plurality of housings may include at least one outdoor unit (1300) installed outdoors and at least one indoor unit (1800) installed indoors. For example, the air conditioner (1000) may be provided such that one outdoor unit (1300) and one indoor unit (1800) are connected via a refrigerant pipe. For example, the air conditioner (1000) may be provided such that one outdoor unit (1300) is connected to two or more indoor units (1800) via refrigerant pipes. For example, the air conditioner (1000) may be provided such that two or more outdoor units (1300) and two or more indoor units (1800) are connected via a plurality of refrigerant pipes.

[0161] The outdoor unit (1300) can be electrically connected to the indoor unit (1800). For example, information (or commands) for controlling the air conditioner (1000) can be input through an input interface (1400) provided in the outdoor unit (1300) or the indoor unit (1800), and the outdoor unit (1300) and the indoor unit (1800) can operate simultaneously or sequentially in response to user input.

[0162] The air conditioner (1000) may include an outdoor heat exchanger (1330) provided in an outdoor unit (1300), an indoor heat exchanger (1810) provided in an indoor unit (1800), and a refrigerant pipe connecting the outdoor heat exchanger (1330) and the indoor heat exchanger (1810).

[0163] The outdoor heat exchanger (1330) can perform heat exchange between the refrigerant and outdoor air by utilizing a phase change of the refrigerant (e.g., evaporation or condensation). For example, the outdoor heat exchanger (1330) can correspond to at least one of the evaporator (20) or condenser (40) of FIG. 1.

[0164] The indoor unit (1800) is installed indoors. For example, the indoor unit (1800) can be classified into a ceiling-mounted indoor unit, a stand-alone indoor unit, a wall-mounted indoor unit, etc., depending on the method of installation. For example, the ceiling-mounted indoor unit can be classified into a 4-way indoor unit, a 1-way indoor unit, a duct-type indoor unit, etc., depending on the method of air discharge.

[0165] Similarly, the indoor heat exchanger (1810) can perform heat exchange between the refrigerant and indoor air by utilizing a phase change of the refrigerant (e.g., evaporation or condensation). For example, the indoor heat exchanger (1810) can correspond to at least one of the evaporator (20) or condenser (40) of FIG. 1.

[0166] The compressor (1310) may be placed inside the outdoor unit (1300). The compressor (1310) may correspond to the compressor (10) of FIG. 1.

[0167] For example, in an air conditioner (1000), if one outdoor unit (1300) and one indoor unit (1800) are directly connected through a refrigerant pipe, the refrigerant may be arranged to circulate between one outdoor unit (1300) and one indoor unit (1800) through the refrigerant pipe.

[0168] For example, in an air conditioner (1000), when one outdoor unit (1300) is connected to two or more indoor units (1800) through refrigerant pipes, the refrigerant can flow to multiple indoor units (1800) through refrigerant pipes branching from the outdoor unit (1300). The refrigerants discharged from the multiple indoor units (1800) can be combined and circulated to the outdoor unit (1300). For example, multiple indoor units (1800) can be directly connected in parallel to one outdoor unit (1300) through separate refrigerant pipes.

[0169] The plurality of indoor units (1800) can be independently operated according to the operating mode set by the user. That is, some of the plurality of indoor units (1800) can be operated in cooling mode, while others can be operated in heating mode. At this time, the refrigerant can be selectively introduced into each indoor unit (1800) at a high or low pressure along a designated circulation path through a flow switching valve, which will be described later, and discharged to be circulated to the outdoor unit (1300).

[0170] For example, when an air conditioner (1000) has two or more outdoor units (1300) and two or more indoor units (1800) connected through multiple refrigerant pipes, refrigerants discharged from multiple outdoor units (1300) can join and flow through one refrigerant pipe, then branch off again at some point and flow into multiple indoor units (1800).

[0171] The plurality of outdoor units (1300) may all be driven or at least some may not be driven depending on the operating load according to the operating amount of the plurality of indoor units (1800). At this time, the refrigerant may be arranged to be introduced into the outdoor unit (1300) that is selectively driven through a flow switching valve and circulated. The air conditioner (1000) may include an expansion valve (1320) to reduce the pressure of the refrigerant introduced into the heat exchanger. For example, the expansion valve (1320) may be arranged inside the indoor unit (1800) or the outdoor unit (1300), or may be arranged in both. The expansion valve (1320) may correspond to the expansion valve (30) of FIG. 1.

[0172] The air conditioner (1000) may further include a refrigerant circulation path diverter valve disposed on the refrigerant circulation path. The refrigerant circulation path diverter valve may include, for example, a 4-way valve. The refrigerant circulation path diverter valve may determine the refrigerant circulation path depending on the operating mode of the indoor unit (1800) (e.g., cooling operation or heating operation). The refrigerant circulation path diverter valve may be connected to the discharge port of the compressor (1310).

[0173] The air conditioner (1000) may include an accumulator. The accumulator may be connected to the suction port of the compressor (1310). Low-temperature, low-pressure refrigerant evaporated in the indoor heat exchanger (1810) or the outdoor heat exchanger (1330) may be introduced into the accumulator.

[0174] The accumulator can separate the refrigerant liquid from the refrigerant gas when a refrigerant mixture of refrigerant liquid and refrigerant gas is introduced, and provide the refrigerant gas from which the refrigerant liquid has been separated to the compressor (1310).

[0175] An outdoor fan may be provided near the outdoor heat exchanger (1330). The outdoor fan may blow outdoor air to the outdoor heat exchanger (1330) to promote heat exchange between the refrigerant and the outdoor air.

[0176] The outdoor unit (1300) of the air conditioner (1000) may include a communication module (1600). The communication module (1600) provided in the outdoor unit (1300) may be referred to as an outdoor unit communication module. The outdoor unit communication module may be provided to receive a control signal from a control unit of an indoor unit (1800) of the air conditioner (1000), which will be described later. The outdoor unit (1300) may control the operation of a compressor (1310), an outdoor heat exchanger (1330), an expansion valve (1320), a flow switching valve, an accumulator, or an outdoor fan based on the control signal received through the outdoor unit communication module. The outdoor unit (1300) may transmit a sensing value detected from an outdoor unit sensor to the control unit of the indoor unit (1800) through the outdoor unit communication module.

[0177] The outdoor unit (1300) of the air conditioner (1000) may include a sensor (1700). The sensor (1700) provided in the outdoor unit (1300) may be referred to as an outdoor unit sensor. For example, the outdoor unit sensor may be provided as an environmental sensor. The outdoor unit sensor may be placed at any location inside or outside the outdoor unit (1300). For example, the outdoor unit sensor may include a temperature sensor (1710) for detecting the air temperature around the outdoor unit (1300), or a refrigerant temperature sensor (1720) for detecting the refrigerant temperature of a refrigerant pipe passing through the outdoor unit (1300). Without being limited thereto, the outdoor unit sensor may further include a humidity sensor for detecting the air humidity around the outdoor unit (1300), or a refrigerant pressure sensor for detecting the refrigerant pressure of a refrigerant pipe passing through the outdoor unit (1300).

[0178] An indoor unit (1800) of an air conditioner (1000) may include a housing, a blower for circulating air into or out of the housing, and an indoor heat exchanger (1810) for exchanging heat with air flowing into the interior of the housing.

[0179] The housing may include an intake port through which indoor air may be drawn into the interior of the housing.

[0180] The indoor unit (1800) of the air conditioner (1000) may include a filter provided to filter foreign substances in the air flowing into the housing through the intake port.

[0181] The housing may include an exhaust port. Air flowing within the housing may be discharged to the exterior of the housing through the exhaust port.

[0182] The housing of the indoor unit (1800) may be provided with an airflow guide that guides the direction of air discharged through the exhaust port. For example, the airflow guide may include blades positioned above the exhaust port. For example, the airflow guide may include an auxiliary fan for controlling the exhaust airflow. However, the airflow guide is not limited thereto and may be omitted.

[0183] An indoor heat exchanger (1810) and a blower may be provided inside the housing of the indoor unit (1800) and are arranged on a path connecting the intake and exhaust ports.

[0184] Blowers may include indoor fans and fan motors. For example, indoor fans may include axial fans, diffusion fans, crossflow fans, and centrifugal fans.

[0185] An indoor heat exchanger (1810) may be positioned between the blower and the exhaust port, or between the intake port and the blower. The indoor heat exchanger (1810) may absorb heat from air introduced through the intake port, or transfer heat to the air introduced through the intake port. The indoor heat exchanger (1810) may include heat exchange tubes through which refrigerant flows, and heat exchange fins in contact with the heat exchange tubes to increase the heat transfer surface area.

[0186] The indoor unit (1800) of the air conditioner (1000) may include a drain tray disposed below the indoor heat exchanger (1810) to collect condensate generated in the indoor heat exchanger (1810). The condensate collected in the drain tray may be drained to the outside through a drain hose. The drain tray may be provided to support the indoor heat exchanger (1810).

[0187] The indoor unit (1800) of the air conditioner (1000) may include a power module. The power module may be connected to an external power source to supply power to components of the indoor unit (1800).

[0188] The indoor unit (1800) of the air conditioner (1000) may include a sensor (1700). The sensor (1700) provided in the indoor unit (1800) may be referred to as an indoor unit sensor. The indoor unit sensor may be an environmental sensor disposed in a space inside or outside the housing. For example, the indoor unit sensor may include a temperature sensor (1710) disposed in a predetermined space inside or outside the housing of the indoor unit (1800). For example, the indoor unit sensor may include a refrigerant temperature sensor (1720) for detecting a refrigerant temperature of a refrigerant pipe passing through the indoor unit (1800). For example, the indoor unit sensor may include each refrigerant temperature sensor (1720) for detecting an inlet, middle, and / or outlet temperature of a refrigerant pipe passing through an indoor heat exchanger (1810). Without being limited thereto, the indoor unit sensor may further include a humidity sensor.

[0189] For example, each environmental information detected by an indoor unit sensor can be transmitted to the indoor unit control unit described later or transmitted externally through the indoor unit communication module described later.

[0190] The indoor unit (1800) of the air conditioner (1000) may include a communication module (1600). The communication module (1600) provided in the indoor unit (1800) may be referred to as an indoor unit communication module. The indoor unit communication module may include at least one of a short-range communication module and a long-range communication module. The indoor unit communication module may include at least one antenna for wirelessly communicating with another device. The outdoor unit communication module may also include at least one of a short-range communication module and a long-range communication module.

[0191] The short-range wireless communication module may include, but is not limited to, a Bluetooth communication module, a BLE (Bluetooth Low Energy) communication module, a near field communication module, a WLAN (Wi-Fi) communication module, a Zigbee communication module, an infrared (IrDA, infrared Data Association) communication module, a WFD (Wi-Fi Direct) communication module, an UWB (ultrawideband) communication module, an Ant+ communication module, a microwave (uWave) communication module, etc.

[0192] The remote communication module may include a communication module that performs various types of remote communication, and may include a mobile communication module. The mobile communication module transmits and receives wireless signals with at least one of a base station, an external terminal, and a server on a mobile communication network.

[0193] The indoor unit communication module can communicate with external devices such as a server, mobile device, and other home appliances through a surrounding access point (AP). The access point (AP) can connect a local area network (LAN) to which the air conditioner (1000) or a user device is connected to a wide area network (WAN) to which the server is connected. The air conditioner (1000) or the user device can be connected to the server through the wide area network (WAN). The indoor unit (1800) of the air conditioner (1000) can include an indoor unit control unit that controls components of the indoor unit (1800) including a blower, etc. The outdoor unit (1300) of the air conditioner (1000) can include an outdoor unit control unit that controls components of the outdoor unit (1300) including a compressor (1310), etc. The indoor unit control unit can communicate with the outdoor unit control unit through the indoor unit communication module and the outdoor unit communication module. The outdoor unit communication module can transmit a control signal generated by the outdoor unit control unit to the indoor unit communication module, or transmit a control signal transmitted from the indoor unit communication module to the outdoor unit control unit. In other words, the outdoor unit (1300) and the indoor unit (1800) can perform two-way communication. The outdoor unit (1300) and the indoor unit (1800) can transmit and receive various signals generated during the operation of the air conditioner (1000).

[0194] The outdoor unit control unit can be electrically connected to components of the outdoor unit (1300) and can control the operation of each component. For example, the outdoor unit control unit can adjust the frequency of the compressor (1310) and control the flow switching valve to change the circulation direction of the refrigerant. The outdoor unit control unit can adjust the rotation speed of the outdoor fan. In addition, the outdoor unit control unit can generate a control signal for adjusting the opening degree of the expansion valve. Under the control of the outdoor unit control unit, the refrigerant can circulate along a refrigerant circulation circuit including the compressor (1310), the flow switching valve, the outdoor heat exchanger (1330), the expansion valve (1320), and the indoor heat exchanger (1810).

[0195] The various temperature sensors included in the outdoor unit (1300) and the indoor unit (1800) can transmit electrical signals corresponding to the detected temperatures to the outdoor unit control unit and / or the indoor unit control unit, respectively. For example, the humidity sensors included in the outdoor unit (1300) and the indoor unit (1800) can transmit electrical signals corresponding to the detected humidity to the outdoor unit control unit and / or the indoor unit control unit, respectively.

[0196] The indoor unit control unit can obtain user input from a user device, including a mobile device, through an indoor unit communication module, and can obtain user input directly through an input interface (1400) or through a remote controller. The indoor unit control unit can control components of the indoor unit (1800), including a blower, in response to the received user input. The indoor unit control unit can transmit information regarding the received user input to the outdoor unit control unit of the outdoor unit (1300).

[0197] The outdoor unit control unit can control the components of the outdoor unit (1300), including the compressor (1310), based on information regarding user input received from the indoor unit (1800). For example, when a control signal corresponding to a user input for selecting an operation mode, such as cooling operation, heating operation, ventilation operation, defrosting operation, or dehumidifying operation, is received from the indoor unit (1800), the outdoor unit control unit can control the components of the outdoor unit (1300) so that the operation of the air conditioner (1000) corresponding to the selected operation mode is performed.

[0198] The outdoor unit control unit and the indoor unit control unit may each include a processor and a memory. The indoor unit control unit may include at least one first processor and at least one first memory, and the outdoor unit control unit may include at least one second processor and at least one second memory.

[0199] The memory (1200) can store / remember various information necessary for the operation of the air conditioner (1000). The memory (1200) can store instructions, applications, data, and / or programs necessary for the operation of the air conditioner (1000). For example, the memory (1200) can store various programs for cooling operation, heating operation, dehumidification operation, and / or defrosting operation of the air conditioner (1000). The memory (1200) can include a volatile memory (1200) such as an S-RAM (Static Random Access Memory) and a D-RAM (Dynamic Random Access Memory) for temporarily storing data. Additionally, the memory (1200) may include non-volatile memory such as ROM (Read Only Memory), EPROM (Erasable Programmable Read Only Memory), and EEPROM (Electrically Erasable Programmable Read Only Memory) for storing data for a long period of time.

[0200] The processor (1100) may generate a control signal for controlling the operation of the air conditioner (1000) based on instructions, applications, data, and / or programs stored in the memory (1200). The processor (1100) may be hardware and include logic circuits and arithmetic circuits. The processor (1100) may process data according to the program and / or instructions provided from the memory (1200) and generate a control signal according to the processing result. The memory (1200) and the processor (1100) may be implemented as a single control circuit or as multiple circuits.

[0201] The indoor unit (1800) of the air conditioner (1000) may include an input interface (1400). The input interface (1400) may include any type of user input means, including buttons, switches, a touch screen, and / or a touch pad. The user may directly input setting data (e.g., desired indoor temperature, operation mode settings for cooling / heating / dehumidification / air purification, outlet selection settings, and / or wind speed settings) through the input interface (1400).

[0202] The input interface (1400) may also be connected to an external input device. For example, the input interface (1400) may be electrically connected to a wired remote controller. The wired remote controller may be installed at a specific location in an indoor space (e.g., a portion of a wall). A user may input setting data regarding the operation of the air conditioner (1000) by operating the wired remote controller. An electrical signal corresponding to the setting data acquired through the wired remote controller may be transmitted to the input interface (1400). In addition, the input interface (1400) may include an infrared sensor. A user may remotely input setting data regarding the operation of the air conditioner (1000) using a wireless remote controller. The setting data input through the wireless remote controller may be transmitted to the input interface (1400) as an infrared signal.

[0203] Additionally, the input interface (1400) may include a microphone. A user's voice command may be acquired through the microphone. The microphone may convert the user's voice command into an electrical signal and transmit the converted electrical signal to the indoor unit control unit. The indoor unit control unit may control the components of the air conditioner (1000) to execute a function corresponding to the user's voice command. Setting data acquired through the input interface (1400) (e.g., desired indoor temperature, operation mode settings for cooling / heating / dehumidification / air purification, outlet selection settings, and / or air volume settings) may be transmitted to the indoor unit control unit described below. In one example, the setting data acquired through the input interface (1400) may be transmitted externally, i.e., to the outdoor unit (1300) or a server, through the indoor unit communication module.

[0204] The indoor unit (1800) of the air conditioner (1000) may include an output interface (1500). The output interface (1500) is electrically connected to the indoor unit control unit and may output information related to the operation of the air conditioner (1000) under the control of the indoor unit control unit. For example, information such as an operation mode, wind direction, wind volume, and temperature selected by a user input may be output. In addition, the output interface (1500) may output sensing information and warning / error messages acquired from an indoor unit sensor or an outdoor unit sensor.

[0205] The output interface (1500) may include a display and a speaker. The speaker, as an audio device, may output various sounds. The display may display information input by the user or information provided to the user using various graphic elements. For example, operation information of the air conditioner (1000) may be displayed as at least one of an image or text. In addition, the display may include an indicator that provides specific information. The display may include an LCD panel (Liquid Crystal Display Panel), an LED panel (Light Emitting Diode Panel), an OLED panel (Organic Light Emitting Diode Panel), a micro LED panel, and / or a plurality of LEDs.

[0206] An air conditioner according to one embodiment of the present disclosure includes a memory storing at least one instruction, and a processing circuit, and at least one processor configured to execute the at least one instruction.

[0207] In one embodiment of the present disclosure, the at least one instruction is individually or collectively executed by the at least one processor, so that the air conditioner assigns a score to a parameter related to a change in the amount of refrigerant at predetermined intervals during each of one or more operations of the air conditioner, based on whether the parameter corresponds to a predetermined condition.

[0208] In one embodiment of the present disclosure, the at least one instruction is individually or collectively executed by the at least one processor, whereby the air conditioner obtains one or more average scores corresponding to each of the one or more operations based on the scores assigned to the parameter at each predetermined time.

[0209] In one embodiment of the present disclosure, the at least one instruction is individually or collectively executed by the at least one processor, whereby the air conditioner obtains a refrigerant quantity status score based on the one or more average scores corresponding to each of the one or more operations.

[0210] In one embodiment of the present disclosure, the at least one instruction is individually or collectively executed by the at least one processor, whereby the air conditioner provides a notification regarding the refrigerant quantity status based on the refrigerant quantity status score.

[0211] An air conditioner according to one embodiment of the present disclosure may further include an evaporator, a first refrigerant temperature sensor for sensing an inlet temperature at an inlet of the evaporator, and a second refrigerant temperature sensor for sensing an outlet temperature at an outlet of the evaporator. By individually or collectively executing the at least one instruction by the at least one processor, the air conditioner may identify whether the outlet temperature received from the second refrigerant temperature sensor is higher than the inlet temperature received from the first refrigerant temperature sensor. By individually or collectively executing the at least one instruction by the at least one processor, the air conditioner may assign a score corresponding to a refrigerant shortage state when the outlet temperature is identified as being higher than the inlet temperature.

[0212] An air conditioner according to one embodiment of the present disclosure may further include an indoor temperature sensor for sensing an indoor temperature. The at least one instruction may be individually or collectively executed by the at least one processor, such that the air conditioner may, by executing the at least one instruction, identify whether at least one of a temperature difference between an indoor temperature received from the indoor temperature sensor and the inlet temperature received from the first refrigerant temperature sensor or a temperature difference between the indoor temperature and the outlet temperature received from the second refrigerant temperature sensor is less than a predetermined temperature difference. When the at least one processor determines that the temperature difference is less than the predetermined temperature difference, it may assign a score corresponding to a refrigerant shortage state.

[0213] An air conditioner according to one embodiment of the present disclosure may further include an expansion valve. By individually or collectively executing at least one instruction by the at least one processor, the air conditioner can identify whether the opening degree of the expansion valve is higher than a predetermined opening degree. The at least one processor can assign a score corresponding to a refrigerant shortage state when, by executing the at least one instruction, it is identified that the opening degree of the expansion valve is higher than the predetermined opening degree.

[0214] According to one embodiment of the present disclosure, the at least one instruction is individually or collectively executed by the at least one processor, so that the air conditioner can assign a score corresponding to a refrigerant shortage condition based on the identification that a protection control signal for the air conditioner has been generated. The protection control signal for the air conditioner may include a control signal for adjusting the frequency of the compressor.

[0215] An air conditioner according to one embodiment of the present disclosure may further include an indoor temperature sensor for sensing an indoor temperature. By individually or collectively executing at least one instruction by the at least one processor, the air conditioner can identify whether the indoor temperature received from the indoor temperature sensor is higher than a set temperature. By individually or collectively executing at least one instruction by the at least one processor, the air conditioner can assign a score corresponding to a refrigerant shortage state when the indoor temperature is identified as being higher than the set temperature.

[0216] For each of one or more operations of the air conditioner according to one embodiment of the present disclosure, the predetermined time may be characterized by being repeated at predetermined time intervals.

[0217] According to an embodiment of the present disclosure, by individually or collectively executing the at least one instruction by the at least one processor, the air conditioner can assign a score to each of the plurality of parameters based on whether each of the plurality of parameters corresponds to a predetermined condition at predetermined intervals during at least one operation of the air conditioner. By individually or collectively executing the at least one instruction by the at least one processor, the air conditioner can obtain a sum of scores for each of the plurality of parameters. By individually or collectively executing the at least one instruction by the at least one processor, the air conditioner can obtain an average score for the at least one operation by dividing the sum of the scores by the number of the scores.

[0218] By individually or collectively executing the at least one instruction by the at least one processor according to one embodiment of the present disclosure, the air conditioner can obtain the refrigerant amount status score by obtaining a moving average of one or more average scores corresponding to each of the one or more operations.

[0219] The air conditioner according to one embodiment of the present disclosure may further include an output interface. By individually or collectively executing the at least one instruction by the at least one processor, the air conditioner may provide a user with a notification regarding a refrigerant shortage through the output interface based on the determination that the calculated refrigerant amount status score is greater than or equal to a threshold score by executing the at least one instruction.

[0220] A method for controlling an air conditioner according to one embodiment of the present disclosure includes the steps of: assigning a score to a parameter related to a change in refrigerant amount at predetermined intervals while each of one or more operations of the air conditioner is performed, based on whether the parameter corresponds to a predetermined condition; obtaining one or more average scores corresponding to each of the one or more operations based on the score assigned to the parameter at each predetermined interval; obtaining a refrigerant amount status score based on the one or more average scores corresponding to each of the one or more operations; and providing a notification regarding a refrigerant amount status based on the refrigerant amount status score.

[0221] The step of assigning a score to the parameter according to one embodiment of the present disclosure may include the step of identifying whether the outlet temperature received from a second refrigerant temperature sensor sensing an outlet temperature of the evaporator is higher than the inlet temperature received from a first refrigerant temperature sensor sensing an inlet temperature of the evaporator, and the step of assigning a score corresponding to a refrigerant shortage state when the outlet temperature is identified as being higher than the inlet temperature.

[0222] The step of assigning a score to the above parameter according to one embodiment of the present disclosure may include the step of identifying whether the opening degree of the expansion valve is higher than a predetermined opening degree, and the step of assigning a score corresponding to a state of insufficient refrigerant amount when the opening degree of the expansion valve is identified as being higher than the predetermined opening degree.

[0223] The step of assigning a score to the parameter according to one embodiment of the present disclosure includes the step of assigning a score corresponding to a refrigerant shortage state based on identification that a protection control signal for the air conditioner has been generated, wherein the protection control signal for the air conditioner may include a control signal for frequency adjustment of the compressor.

[0224] A computer-readable recording medium having recorded thereon a program for performing a method for controlling an air conditioner according to one embodiment of the present disclosure on a computer is provided.

[0225] A device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, the term "non-transitory storage medium" simply means a tangible device that does not contain signals (e.g., electromagnetic waves). This term does not distinguish between cases where data is permanently stored in the storage medium and cases where data is temporarily stored. For example, a "non-transitory storage medium" may include a buffer in which data is temporarily stored.

[0226] According to one embodiment, the method according to various embodiments disclosed in the present document may be provided as included in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read-only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) through an application store or directly between two user devices (e.g., smartphones). In the case of online distribution, at least a portion of the computer program product (e.g., a downloadable app) may be temporarily stored or temporarily generated in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

Claims

1. In air conditioners, memory that stores at least one instruction; and comprising at least one processor configured to execute at least one instruction, and comprising a processing circuit; By individually or collectively executing said at least one instruction by said at least one processor, said air conditioner, While each of one or more operations of the air conditioner is performed, at predetermined time intervals, a score is assigned to the parameter based on whether the parameter related to the change in the amount of refrigerant corresponds to a predetermined condition, Obtain one or more average scores corresponding to each of the one or more drives based on the scores assigned to the parameters at each of the above-determined times, Obtaining a refrigerant quantity status score based on the one or more average scores corresponding to each of the one or more operations, An air conditioner that provides notification regarding the refrigerant amount status based on the above refrigerant amount status score.

2. In paragraph 1, The above air conditioner, evaporator; A first refrigerant temperature sensor for sensing an inlet temperature at the inlet of the evaporator; and Further comprising a second refrigerant temperature sensor for sensing the outlet temperature at the outlet of the above evaporator, By individually or collectively executing said at least one instruction by said at least one processor, said air conditioner, Identifying whether the outlet temperature received from the second refrigerant temperature sensor is higher than the inlet temperature received from the first refrigerant temperature sensor; An air conditioner that assigns a score corresponding to a refrigerant shortage condition when the outlet temperature is identified as being higher than the inlet temperature.

3. In paragraph 2, The above air conditioner, Further comprising an indoor temperature sensor for sensing the indoor temperature, By individually or collectively executing said at least one instruction by said at least one processor, said air conditioner, Identifying whether at least one of the temperature difference between the indoor temperature received from the indoor temperature sensor and the inlet temperature received from the first refrigerant temperature sensor or the temperature difference between the indoor temperature and the outlet temperature received from the second refrigerant temperature sensor is less than a predetermined temperature difference, An air conditioner that assigns a score corresponding to a refrigerant shortage state when the temperature difference is identified as being smaller than the predetermined temperature difference.

4. In any one of paragraphs 1 to 3, The above air conditioner, Including an expansion valve, By individually or collectively executing said at least one instruction by said at least one processor, said air conditioner, Identify whether the opening of the above expansion valve is higher than the predetermined opening, An air conditioner that assigns a score corresponding to a state of insufficient refrigerant when the opening degree of the expansion valve is identified as being higher than the predetermined opening degree.

5. In any one of paragraphs 1 to 4, By individually or collectively executing said at least one instruction by said at least one processor, said air conditioner, Identify whether a protective control signal is generated for the above air conditioner, Based on the identification that a protective control signal for the above air conditioner has been generated, a score corresponding to a refrigerant shortage condition is assigned, An air conditioner, wherein the protection control signal for the air conditioner includes a control signal for frequency adjustment of the compressor.

6. In any one of paragraphs 1 to 5, The above air conditioner, Further comprising an indoor temperature sensor for sensing the indoor temperature, By individually or collectively executing said at least one instruction by said at least one processor, said air conditioner, Identifying whether the indoor temperature received from the indoor temperature sensor is higher than the set temperature, An air conditioner that assigns a score corresponding to a refrigerant shortage condition when the indoor temperature is identified as being higher than the set temperature.

7. In any one of paragraphs 1 to 6, An air conditioner, characterized in that, for each of one or more operations of the air conditioner, the predetermined time is repeated at predetermined time intervals.

8. In paragraph 7, By individually or collectively executing said at least one instruction by said at least one processor, said air conditioner, At a predetermined time interval while at least one operation of the air conditioner is performed, a score is assigned to each of the plurality of parameters based on whether each of the plurality of parameters corresponds to a predetermined condition, Obtain the sum of scores for each of the above multiple parameters, An air conditioner that obtains an average score for at least one operation by dividing the sum of the above scores by the number of the above scores.

9. In any one of paragraphs 1 to 8, By individually or collectively executing said at least one instruction by said at least one processor, said air conditioner, An air conditioner that obtains the refrigerant amount status score by obtaining a moving average of one or more average scores corresponding to each of the one or more operations.

10. In any one of paragraphs 1 to 9, The above air conditioner, Including more output interfaces, By individually or collectively executing said at least one instruction by said at least one processor, said air conditioner, An air conditioner that provides a notification regarding a lack of refrigerant to a user through the output interface based on the identification that the above-mentioned calculated refrigerant amount status score is greater than or equal to a threshold score.

11. In the method of controlling an air conditioner, A step of assigning a score to a parameter related to a change in the amount of refrigerant at predetermined intervals while each of one or more operations of the air conditioner is performed based on whether the parameter corresponds to a predetermined condition; A step of obtaining one or more average scores corresponding to each of the one or more drives based on the scores assigned to the parameters at each of the predetermined times; A step of obtaining a refrigerant quantity status score based on one or more of the average scores corresponding to each of the one or more of the operations; and A method comprising the step of providing a notification regarding the refrigerant quantity status based on the refrigerant quantity status score.

12. In paragraph 11, The step of assigning scores to the above parameters is: A step of identifying whether the outlet temperature received from the second refrigerant temperature sensor sensing the outlet temperature of the evaporator is higher than the inlet temperature received from the first refrigerant temperature sensor sensing the inlet temperature of the evaporator; and A method comprising the step of assigning a score corresponding to a refrigerant shortage condition when the outlet temperature is identified as being higher than the inlet temperature.

13. In paragraph 11 or 12, The step of assigning scores to the above parameters is: A step of identifying whether the opening of the expansion valve is higher than a predetermined opening; and A method comprising the step of assigning a score corresponding to a refrigerant shortage state when the opening degree of the expansion valve is identified as being higher than the predetermined opening degree.

14. In any one of paragraphs 11 to 13, The step of assigning scores to the above parameters is: A step of assigning a score corresponding to a refrigerant shortage condition based on identification that a protective control signal for the air conditioner has been generated, A method wherein the protection control signal for the air conditioner includes a control signal for frequency adjustment of the compressor.

15. A step of assigning a score to a parameter related to a change in the amount of refrigerant at predetermined intervals while each of one or more operations of the air conditioner is performed based on whether the parameter corresponds to a predetermined condition; A step of obtaining one or more average scores corresponding to each of the one or more drives based on the scores assigned to the parameters at each of the predetermined times; A step of obtaining a refrigerant quantity status score based on one or more of the average scores corresponding to each of the one or more of the operations; and A computer-readable recording medium having recorded thereon a program for performing a control method of an air conditioner, including a step of providing a notification regarding the refrigerant amount status based on the above refrigerant amount status score, on a computer.

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