[0030] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present invention, but should not be understood as limiting the present invention. On the contrary, the embodiments of the present invention include all changes, modifications and equivalents falling within the scope of the spirit and connotation of the appended claims.
[0031] The following describes the air conditioner and its throttle device clogging detection method and system according to the embodiments of the present invention with reference to the accompanying drawings.
[0032] In the embodiment of the present invention, the air conditioner includes a compressor, an indoor unit, an indoor unit evaporator, and a counter.
[0033] figure 1 It is a flowchart of a method for detecting clogging of a throttle device of an air conditioner according to an embodiment of the present invention. Such as figure 1 As shown, the method for detecting blockage of the throttling device includes the following steps:
[0034] S101: After the air conditioner is powered on, obtain the state of the compressor.
[0035] S102: When the compressor is in an operating state, determine whether the continuous operating time of the compressor reaches a first preset time t1.
[0036] Specifically, a timing module may be provided in the air conditioner, and when the compressor starts to run, a trigger signal may be sent to the timing module to enable the timing module to start timing, so as to realize the statistics of the compressor running time by the timing module.
[0037] S103: If the continuous operating time of the compressor reaches the first preset time t1, it is further determined whether the operating frequency of the compressor during the first preset time t1 is greater than the preset frequency f1.
[0038] Optionally, a rotation speed sensor may be provided on the compressor, and the operation frequency of the compressor may be detected by detecting the rotation speed of the compressor; the operation frequency of the compressor may also be detected by detecting the power supply frequency of the compressor.
[0039] S104. If the operating frequency of the compressor during the first preset time t1 is greater than the preset frequency f1, obtain the operating current I1 of the air conditioner and/or the inlet air temperature of the indoor unit every second preset time t2 T1 and the temperature of the indoor unit evaporator T2.
[0040] Specifically, a current detection device, such as a current transformer, a current sensor, etc., can be connected in series in the main circuit of the air conditioner to detect the operating current of the air conditioner. Corresponding temperature sensors can be set at the air inlet of the indoor unit and the surface of the indoor unit evaporator to detect the temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator respectively.
[0041] It should be noted that the detection period of the current detection device and temperature sensor should be less than the second preset time t2, that is, within the second preset time t2, the current detection device can achieve multiple current collections, and the temperature sensor can achieve multiple Secondary temperature collection. Furthermore, the operating current I1 of the air conditioner obtained every second preset time t2 may be the average value of multiple operating currents, and the inlet air temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator may both be corresponding multiple The average value of the temperature.
[0042] S105: Determine whether the throttling device of the air conditioner is blocked according to the working current I1 of the air conditioner and/or the inlet air temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator.
[0043] Specifically, it is determined whether the working current I1 of the air conditioner meets the first preset relationship, and/or whether the temperature difference T1-T2 between the inlet air temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator meets the second preset relationship. If the working current I1 of the air conditioner satisfies the first preset relationship, and/or the temperature difference T1-T2 between the inlet air temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator satisfies the second preset relationship, it is determined that the air conditioner The throttling device of the filter is blocked.
[0044] The first preset relationship may be I1
[0045] In the embodiment of the present invention, the preset current threshold I0 and the preset temperature difference ΔT can be obtained through experiments. For example, in the experiment, different clogging degrees of the throttling device are preset, and when the operating time of the compressor reaches the first preset time t1, and the operating frequency during the first preset time t1 is greater than the preset frequency f1, Real-time detection of the working current I1 of the air conditioner, the inlet temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator, and calculate ∣T1-T2∣, and then calculate the average value of multiple working currents I1, multiple ∣T1- The average value of T2∣. Thus, the preset current threshold I0 and the preset temperature difference ΔT can be set according to the calculated average value. For example, the preset current threshold I0 and the preset temperature difference ΔT can be set to be values less than the corresponding average value.
[0046] It should be noted that if the throttling device of the air conditioner is blocked, regardless of whether the air conditioner is running in cooling mode or heating mode, during the continuous operation of the compressor, even if the current operating frequency of the compressor is high , But the working current I1 of the corresponding air conditioner is very low, and the temperature difference T1-T2 between the inlet air temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator is very small.
[0047] Therefore, the method for detecting clogging of the throttle device of the air conditioner uses the operating current I1 of the air conditioner when the compressor operates at a high frequency, and/or the inlet air temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator. The temperature difference between T1-T2 is very small, and it is simple and reliable to detect whether the throttle device of the air conditioner is blocked.
[0048] In the embodiments of the present invention, see figure 2 When the compressor is running, the count value N of the counter can be set to 0.
[0049] Further, see figure 2 When it is judged that the throttling device of the air conditioner is blocked, the count value of the counter can be controlled to increase by 1, and it can be judged whether the count value of the counter reaches the preset value. Among them, if the count value of the counter is less than the preset value, the compressor is controlled to stop running for the third preset time t3 and then the compressor is controlled to start; if the count value of the counter reaches the preset value, the air conditioner is controlled to stop and the air conditioner is controlled The device sends out the first prompt message.
[0050] It can be understood that when the throttling device is not clogged, the air conditioner has the best cooling or heating effect; when the throttling device is clogged, the fewer the number of clogging, the better the cooling or heating effect of the air conditioner.
[0051] In the example of the present invention, the number of clogging times of the throttling device, that is, the preset value, can be obtained through experiments when a certain effect of cooling or heating is ensured.
[0052] Specifically, each time it is determined that the throttle device of the air conditioner is blocked, the count value N of the counter is controlled to increase by 1, and when the count value N is greater than or equal to 1 and less than the preset value, the compressor can be controlled to stop running the third preset value. Set the time t3 and then control the compressor to start. Among them, in the third preset time when the compressor stops running, the air conditioner can be controlled to perform self-adjustment or self-repair, such as controlling the air conditioner's throttling device such as a solenoid valve to increase the opening to increase the flow or inlet Air volume and so on.
[0053] When the count value N of the counter reaches the preset value, it means that the throttling device has been blocked too many times, which has seriously affected the cooling or heating effect of the air conditioner. At this time, the air conditioner can be controlled to stop and control the air conditioner to send out the first Prompt information, such as a "di di di" sound through the buzzer set on the air conditioner, to remind the user to repair the throttling device of the air conditioner in time.
[0054] In summary, according to the method for detecting blockage of the throttling device of an air conditioner according to an embodiment of the present invention, the compressor is continuously operated for the first preset time t1, and the operating frequency of the compressor during the first preset time t1 is greater than the preset time. When the frequency f1 is set, the operating current I1 of the air conditioner is obtained every second preset time t2, and/or the inlet air temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator, and then according to the operating current I1 of the air conditioner, And/or, the inlet air temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator determine whether the throttling device of the air conditioner is blocked. The method can realize the detection of clogging of the throttle device of the air conditioner, and the detection method is simple and reliable. In addition, the compressor can be controlled to start and stop or the air conditioner can be shut down according to the number of clogging of the throttle device, thereby reducing energy consumption.
[0055] The present invention also proposes a non-transitory computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the method for detecting blockage of the throttle device of the air conditioner as in the above-mentioned embodiment is realized.
[0056] The non-transitory computer-readable storage medium of the embodiment of the present invention can realize the detection of clogging of the throttle device of the air conditioner by executing the program stored thereon corresponding to the above-mentioned method for detecting refrigerant leakage in the air conditioner, and the implementation method is simple reliable.
[0057] image 3 It is a system for detecting clogging of a throttle device of an air conditioner according to an embodiment of the present invention. Such as image 3 As shown, the throttling device blockage detection system 100 includes: a first acquisition module 10, a first determination module 20, a second determination module 30, a second acquisition module 40, and a third determination module 50.
[0058] The first acquiring module 10 is used to acquire the state of the compressor after the air conditioner is powered on. The first judgment module 20 is used for judging whether the continuous operation time of the compressor reaches the first preset time t1 when the compressor is in the running state. The second judgment module 30 is configured to further judge whether the operating frequency of the compressor during the first preset time t1 is greater than the preset frequency f1 when the continuous operating time of the compressor reaches the first preset time t1. The second acquiring module 40 is used to acquire the operating current I1 of the air conditioner every second preset time t2 when the operating frequency of the compressor during the first preset time t1 is greater than the preset frequency f1, and/or indoor The inlet air temperature T1 of the unit and the temperature T2 of the indoor unit evaporator. The third judgment module 50 is used to judge whether the throttle device of the air conditioner is blocked according to the working current I1 of the air conditioner, and/or the inlet air temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator.
[0059] In the embodiment of the present invention, a timing module can be set in the air conditioner. When the compressor starts to run, a trigger signal can be sent to the timing module to enable the timing module to start timing, so as to realize the timing module's monitoring of the compressor running time. statistics.
[0060] Further, a current detection device, such as a current transformer, a current sensor, etc., can be connected in series in the main circuit of the air conditioner to detect the working current of the air conditioner. Corresponding temperature sensors can be set at the air inlet of the indoor unit and the surface of the indoor unit evaporator to detect the temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator respectively.
[0061] It should be noted that the detection period of the current detection device and temperature sensor should be less than the second preset time t2, that is, within the second preset time t2, the current detection device can achieve multiple current collections, and the temperature sensor can achieve multiple Secondary temperature collection. Furthermore, the operating current I1 of the air conditioner acquired by the second acquiring module 40 every second preset time t2 may be an average value of multiple operating currents, and both the inlet air temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator may be It is the average of multiple corresponding temperatures.
[0062] In the embodiment of the present invention, the third determining module 50 may be specifically used to determine whether the working current I1 of the air conditioner satisfies the first preset relationship, and/or the inlet air temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator Whether the temperature difference between T1-T2 satisfies the second preset relationship; if the working current I1 of the air conditioner satisfies the first preset relationship, and/or, between the inlet air temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator If the temperature difference T1-T2 meets the second preset relationship, it is determined that the throttle device of the air conditioner is blocked.
[0063] The first preset relationship is I1
[0064] In the embodiment of the present invention, the preset current threshold I0 and the preset temperature difference ΔT can be obtained through experiments. For example, in the experiment, different clogging degrees of the throttling device are preset, and when the operating time of the compressor reaches the first preset time t1, and the operating frequency during the first preset time t1 is greater than the preset frequency f1, Real-time detection of the working current I1 of the air conditioner, the inlet temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator, and calculate ∣T1-T2∣, and then calculate the average value of multiple working currents I1, multiple ∣T1- The average value of T2∣. Thus, the preset current threshold I0 and the preset temperature difference ΔT can be set according to the calculated average value. For example, the preset current threshold I0 and the preset temperature difference ΔT can be set to be values less than the corresponding average value.
[0065] It should be noted that if the throttling device of the air conditioner is blocked, regardless of whether the air conditioner is running in cooling mode or heating mode, during the continuous operation of the compressor, even if the current operating frequency of the compressor is high , But the working current I1 of the corresponding air conditioner is very low, and the temperature difference T1-T2 between the inlet air temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator is very small.
[0066] Therefore, the air conditioner throttling device clogging detection system uses the temperature difference between the operating current I1 of the air conditioner, the inlet air temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator when the compressor operates at a high frequency. T1-T2 has a very small rule, which is simple and reliable to detect whether the throttling device of the air conditioner is blocked.
[0067] In another embodiment of the present invention, such as Figure 4 As shown, the detection system 100 may also include a control module 60.
[0068] In this embodiment, when the first obtaining module 10 obtains the current operating state of the compressor, the control module 60 may set the count value N of the counter to zero.
[0069] Further, the control module 60 may also control the count value of the counter to increase by 1 when judging that the throttling device of the air conditioner is blocked, and judge whether the count value of the counter reaches a preset value.
[0070] Wherein, if the count value of the counter is less than the preset value, the control module 60 controls the compressor to stop running for a third preset time before controlling the compressor to start. If the count value of the counter reaches the preset value, the control module 60 controls the air conditioner to stop, and controls the air conditioner to send the first prompt message.
[0071] It can be understood that when the throttling device is not clogged, the air conditioner has the best cooling or heating effect; when the throttling device is clogged, the fewer the number of clogging, the better the cooling or heating effect of the air conditioner.
[0072] In the example of the present invention, the number of clogging times of the throttling device, that is, the preset value, can be obtained through experiments when a certain effect of cooling or heating is ensured.
[0073] Specifically, every time it is determined that the throttle device of the air conditioner is blocked, the control module 60 controls the count value N of the counter to increase by 1. When the count value N is greater than or equal to 1 and less than the preset value, the control module 60 can control the compression The compressor stops running for the third preset time t3 and then controls the compressor to start. Among them, during the third preset time when the compressor stops running, the control module 60 can also control the air conditioner to perform self-adjustment or self-repair, such as controlling the throttle device of the air conditioner such as a solenoid valve to increase the opening to increase the refrigerant The flow rate or intake air volume, etc.
[0074] When the count value N of the counter reaches the preset value, it means that the throttling device has been blocked too many times, which has seriously affected the cooling or heating effect of the air conditioner. At this time, the control module 60 can control the air conditioner to stop and control the air conditioner. The first prompt message is issued, such as a "di di di" sound through a buzzer set on the air conditioner to remind the user to repair the throttling device of the air conditioner in time.
[0075] In summary, according to the system for detecting blockage of the throttling device of an air conditioner according to an embodiment of the present invention, the compressor is continuously operated for the first preset time t1, and the operating frequency of the compressor during the first preset time t1 is greater than the preset time. When the frequency f1 is set, the operating current I1 of the air conditioner is obtained every second preset time t2 through the second obtaining module, and/or the inlet air temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator are passed through the third The judging module judges whether the throttling device of the air conditioner is blocked according to the operating current I1 of the air conditioner, and/or the inlet air temperature T1 of the indoor unit and the temperature T2 of the indoor unit evaporator. The system can realize the detection of clogging of the throttle device of the air conditioner, and is simple and reliable. In addition, the compressor can be controlled to start and stop or the air conditioner can be shut down according to the number of clogging of the throttle device, thereby reducing energy consumption.
[0076] Figure 5 It is a block diagram of an air conditioner according to an embodiment of the present invention. Such as Figure 5 As shown, the air conditioner 1000 includes the clogging detection system 100 of the throttle device of the air conditioner according to the above embodiment of the present invention.
[0077] The air conditioner of the embodiment of the present invention adopts the detection system for the clogging of the throttle device of the air conditioner, which can realize the detection of the clogging of the throttle device of the air conditioner, and the implementation method is simple and reliable.
[0078] It should be noted that the logic and/or steps represented in the flowchart or described in other ways herein, for example, can be considered as a sequence table of executable instructions for implementing logic functions, and can be implemented in any computer. In a readable medium, for use by an instruction execution system, device, or device (such as a computer-based system, a system including a processor, or other systems that can fetch instructions from the instruction execution system, device, or device and execute the instructions), or combine these Used for instruction execution system, device or equipment. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transmit a program for use by an instruction execution system, device, or device or in combination with these instruction execution systems, devices, or devices. More specific examples (non-exhaustive list) of computer readable media include the following: electrical connections (electronic devices) with one or more wiring, portable computer disk cases (magnetic devices), random access memory (RAM), Read only memory (ROM), erasable and editable read only memory (EPROM or flash memory), fiber optic devices, and portable compact disk read only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable media on which the program can be printed, because it can be used, for example, by optically scanning the paper or other media, and then editing, interpreting, or other suitable media if necessary. The program is processed in a manner to obtain the program electronically and then stored in the computer memory.
[0079] Any process or method description in the flowchart or described in other ways herein can be understood as a module, segment or part of code that includes one or more executable instructions for implementing specific logical functions or steps of the process , And the scope of the preferred embodiment of the present invention includes additional implementations, which may not be in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. It is understood by those skilled in the art to which the embodiments of the present invention belong.
[0080] It should be understood that each part of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the foregoing embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if it is implemented by hardware, as in another embodiment, it can be implemented by any one or a combination of the following technologies known in the art: a logic gate circuit for implementing logic functions on data signals Discrete logic circuits, application-specific integrated circuits with suitable combinational logic gates, programmable gate array (PGA), field programmable gate array (FPGA), etc.
[0081] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that the terms "connected" and "connected" should be understood in a broad sense unless otherwise clearly specified and limited. For example, they may be fixed connection, detachable connection, or integral Ground connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present invention can be understood in specific situations. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.
[0082] In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean specific features described in conjunction with the embodiment or example , Structure, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner.
[0083] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and modifications can be made to these embodiments without departing from the principle and purpose of the present invention. The scope of the present invention is defined by the claims and their equivalents.
