Method and device for air conditioner heat exchanger dredging control, air conditioner and storage medium

Abstract

The application relates to the technical field of intelligent air conditioners, and discloses a method and device for dredging control of an air conditioner heat exchanger, an air conditioner and a storage medium. The method comprises the following steps: acquiring a current working current of an indoor fan of the air conditioner in a running state; in the case that the current working current is greater than a preset working current, determining current dredging position information on a hairpin tube in the indoor heat exchanger of the air conditioner according to a temperature difference corresponding to a strip-shaped air outlet of the air conditioner; and controlling liquid inlet pressure valves and liquid outlet pressure valves of the corresponding hairpin tube according to the current dredging position information to perform dredging treatment. In this way, the dirty blockage detection of the air conditioner heat exchanger and the dredging of the hairpin tube can be automatically completed, and the service life of the air conditioner and the comfort of user experience are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent air conditioners, for example to a method and device for air conditioner heat exchanger dredging control, an air conditioner and a storage medium. BACKGROUND

[0002] Air conditioners are now essential household and office appliances, especially in summer and winter. Air conditioners can cool in summer and heat in winter, adjusting indoor temperature to achieve winter and summer, providing a comfortable environment for users.

[0003] During the use of the air conditioner, if the air conditioner is used for too long or impurities exist in the refrigerant, it will cause a certain degree of obstruction in the operation process of the refrigerant in the air conditioner pipeline. If the obstruction position exists in the hairpin pipe, it is difficult to clean due to the relatively long length of the hairpin pipe, and if it is accumulated for a long time, it will cause the performance of the air conditioner to decline and affect normal use.

[0004] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0005] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an overall description of the application, nor is it intended to determine key / important elements or delineate the scope of these embodiments, but as a prelude to the detailed description below.

[0006] The embodiments of the present disclosure provide a method and device for air conditioner heat exchanger dredging control, an air conditioner and a storage medium to solve the technical problem of dirty and blocked hairpin pipes of the air conditioner heat exchanger.

[0007] In some embodiments, the method comprises:

[0008] obtaining a current working current of the air conditioner indoor fan in a running state;

[0009] In the case where the current working current is greater than a preset working current, according to the temperature difference corresponding to the air conditioner strip air outlet, the current dredging position information of the hairpin pipe in the air conditioner indoor heat exchanger is determined;

[0010] According to the current dredging position information, the liquid inlet pressure valve and the liquid outlet pressure valve of the corresponding hairpin pipe are controlled for dredging treatment.

[0011] In some embodiments, before determining the current dredging position information of the hairpin pipe in the air conditioner indoor heat exchanger, the method further comprises:

[0012] receiving the unblocking command; or

[0013] determining that the obtained current coil temperature of the air conditioner is greater than or equal to the freezing temperature.

[0014] In some embodiments, the determining the current unblocking position information of the hairpin tube in the air conditioner indoor heat exchanger comprises:

[0015] According to the liquid inlet direction, the air outlet temperature of each position of the strip-shaped air outlet is obtained from one end of the strip-shaped air outlet as the starting point, and the temperature difference between the air outlet temperature corresponding to each position and the air outlet temperature corresponding to the previous position is obtained.

[0016] In the case that the current temperature difference is greater than the previous temperature difference by a set value, and the last temperature difference is greater than the current temperature difference, the unblocking position to be unblocked on the hairpin tube of the air conditioner indoor heat exchanger is determined according to the current temperature difference.

[0017] In some embodiments, the determining the unblocking position to be unblocked on the hairpin tube of the air conditioner indoor heat exchanger comprises:

[0018] determining the current position of the strip-shaped air outlet corresponding to the current temperature difference;

[0019] According to the proportional relationship between the strip-shaped air outlet and the hairpin tube, the unblocking position to be unblocked on each hairpin tube corresponding to the current position is determined.

[0020] In some embodiments, after determining the unblocking position to be unblocked on each hairpin tube corresponding to the current position, the method further comprises:

[0021] obtaining the pressure value in each hairpin tube corresponding to the hairpin tube, and determining one or more hairpin tubes to be unblocked according to the pressure value in the hairpin tube;

[0022] determining the unblocking position to be unblocked on the hairpin tube as the current unblocking position of the air conditioner.

[0023] In some embodiments, the unblocking processing comprises:

[0024] According to the current unblocking position information, the corresponding hairpin tube is determined as the current hairpin tube;

[0025] opening the current liquid inlet pressure valve of the current hairpin tube, and closing the corresponding current liquid outlet pressure valve, and monitoring the pressure value of the current liquid outlet pressure valve;

[0026] In the case that the monitored current pressure value is greater than or equal to the set pressure value, the current liquid outlet pressure valve is opened.

[0027] In some embodiments, after closing the corresponding current liquid outlet pressure valve, the method further comprises:

[0028] controlling the air conditioner to operate in a heating mode, and performing frequency increasing processing on the compressor.

[0029] In some embodiments, the apparatus comprises:

[0030] an acquisition module configured to acquire a current working current of the indoor fan of the air conditioner in an operating state;

[0031] a dredging determination module configured to, in a case where the current working current is greater than a preset working current, determine current dredging position information on a hairpin tube in the indoor heat exchanger of the air conditioner according to a temperature difference corresponding to a strip-shaped air outlet of the air conditioner;

[0032] a dredging control module configured to control an inlet liquid pressure valve and an outlet liquid pressure valve of a corresponding hairpin tube to perform dredging processing according to the current dredging position information.

[0033] In some embodiments, the apparatus for air conditioner heat exchanger dredging control comprises a processor and a memory storing program instructions, and the processor is configured to execute the above-mentioned method for air conditioner heat exchanger dredging control when executing the program instructions.

[0034] In some embodiments, the air conditioner comprises an air conditioner body, and the above-mentioned apparatus for air conditioner heat exchanger dredging control is installed in the air conditioner body.

[0035] In some embodiments, the storage medium stores program instructions, and the program instructions execute the above-mentioned method for air conditioner heat exchanger dredging control when running.

[0036] The method, apparatus and air conditioner for air conditioner heat exchanger dredging control provided by the embodiments of the present disclosure can achieve the following technical effects:

[0037] By monitoring the working current of the indoor fan of the air conditioner, it is determined that the hairpin tube in the indoor heat exchanger of the air conditioner has a dirty blockage phenomenon, and according to the temperature difference corresponding to the strip-shaped air outlet of the air conditioner, the specific dredging position information on the hairpin tube is determined, and then by controlling the inlet liquid pressure valve and the outlet liquid pressure valve of the corresponding hairpin tube, dredging processing is performed, thereby automatically completing the dirty blockage detection of the air conditioner heat exchanger and the dredging of the hairpin tube, and improving the service life of the air conditioner and the comfort of user experience.

[0038] The general description above and the following description below are exemplary and explanatory only and are not restrictive of the application. BRIEF DESCRIPTION OF DRAWINGS

[0039] One or more embodiments are illustrated by way of example in the figures that are not intended to be limiting of the present embodiments. Like numbers refer to like elements throughout the drawings, which are not necessarily to scale, and in which:

[0040] Figure 1 is a flow diagram of a method for clogging control of an air conditioner heat exchanger according to an embodiment of the present disclosure;

[0041] Figure 2 is a flow diagram of a method for clogging control of an air conditioner heat exchanger according to an embodiment of the present disclosure;

[0042] Figure 3 is a flow diagram of a method for clogging control of an air conditioner heat exchanger according to an embodiment of the present disclosure;

[0043] Figure 4 is a structural diagram of a clogging control device for an air conditioner heat exchanger according to an embodiment of the present disclosure;

[0044] Figure 5 is a structural diagram of a clogging control device for an air conditioner heat exchanger according to an embodiment of the present disclosure;

[0045] Figure 6 is a structural diagram of a clogging control device for an air conditioner heat exchanger according to an embodiment of the present disclosure;

[0046] Figure 7 is a schematic diagram of an air conditioner according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0047] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, which are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0048] The terms "first", "second", and the like in the description and claims of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0049] The term "plurality" means two or more, unless otherwise specified.

[0050] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the preceding and following objects. For example, A / B represents: A or B.

[0051] The term "and / or" is a description of the association relationship between objects, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, three relationships.

[0052] In the embodiments of the present disclosure, during the operation of the air conditioner, by monitoring the working current of the air conditioner indoor fan, it is determined that the hairpin tube in the air conditioner indoor heat exchanger exists a dirty blockage phenomenon, and according to the temperature difference corresponding to the air conditioner strip air outlet, the specific dredging position information on the hairpin tube is determined, and the liquid inlet pressure valve and the liquid outlet pressure valve of the corresponding hairpin tube are controlled for dredging treatment. In this way, the dirty blockage detection and cleaning of the air conditioner are automatically completed, the service life of the air conditioner is improved, and the comfort of the user experience is improved. And when the dredging treatment is carried out, the air conditioner is controlled to run in the heating mode, and the compressor is subjected to frequency increasing treatment, so as to increase the gas-liquid ratio in the pipeline of the hairpin tube, and continuously increase the pressure in the pipeline, so that the pressure value at the position of the liquid outlet pipe reaches the set pressure value, and when the liquid outlet pressure valve is fully opened, the high-pressure refrigerant gas carrying liquid refrigerant can be quickly flushed in the hairpin tube, further improving the efficiency of dredging.

[0053] Figure 1 is a flowchart of a method for air conditioner heat exchanger dredging control provided by the present disclosure. As shown in Figure 1 , the process of air conditioner heat exchanger dredging control includes:

[0054] Step 101: Obtain the current working current of the air conditioner indoor fan in the running state.

[0055] At present, the air conditioner can have multiple operating modes, including: cooling mode, heating mode, dehumidification mode, sterilization mode, etc. During the normal operation of the air conditioner, the working current of the air conditioner indoor fan can be monitored, that is, the working current of the air conditioner indoor fan can be obtained in time or in real time. Among them, the current working current of the air conditioner indoor fan is obtained at the current time.

[0056] Step 102: In the case where the current working current is greater than the preset working current, according to the temperature difference corresponding to the air conditioner strip air outlet, the current dredging position information on the hairpin tube in the air conditioner indoor heat exchanger is determined.

[0057] In the embodiments of the present disclosure, if an abnormality occurs in the pipeline of the indoor heat exchanger of the air conditioner, for example, a dirty blockage phenomenon occurs, or a freezing phenomenon occurs, etc., it may cause the working current of the indoor fan to be relatively large. Therefore, when the current working current is greater than the preset working current, it can be determined that an abnormality occurs in the pipeline of the indoor heat exchanger.

[0058] Alternatively, in some embodiments, in the case that the current working current is greater than the preset working current, it can be directly determined that a dirty blockage phenomenon occurs in the indoor heat exchanger of the air conditioner and needs to be dredged. Alternatively, in some embodiments, in the case that the current working current is greater than the preset working current, if a dredging command is received, it can be determined that a dirty blockage phenomenon occurs in the indoor heat exchanger of the air conditioner and needs to be dredged. Alternatively, in some embodiments, in the case that the current working current is greater than the preset working current, if the current coil temperature of the air conditioner obtained is greater than or equal to the freezing temperature, it indicates that a freezing phenomenon does not occur in the indoor heat exchanger of the air conditioner, but a dirty blockage phenomenon occurs and needs to be dredged. That is, before determining the current dredging position information on the hairpin tube in the indoor heat exchanger of the air conditioner, it further includes: receiving a dredging command; or, determining that the current coil temperature of the air conditioner obtained is greater than or equal to the freezing temperature.

[0059] In the embodiments of the present disclosure, when it is determined that a dirty blockage phenomenon occurs in the indoor heat exchanger of the air conditioner and needs to be dredged, the specific to-be-dredged position in the indoor heat exchanger of the air conditioner also needs to be determined. In some embodiments, the current dredging position information on the hairpin tube in the indoor heat exchanger of the air conditioner can be determined according to the temperature difference corresponding to the air conditioner belt-shaped air outlet. Since the inlet pipe and the outlet pipe connected with the hairpin tube in the indoor heat exchanger respectively have a large angle with the horizontal direction, when impurities in the refrigerant enter the inlet pipe or the outlet pipe, they will enter the corresponding hairpin tube under the influence of the refrigerant and gravity. Therefore, only the current dredging position information on the hairpin tube in the indoor heat exchanger of the air conditioner needs to be determined.

[0060] The indoor air outlet of the air conditioner is generally a belt-shaped air outlet. Therefore, the outlet air temperature of the belt-shaped air outlet can be monitored according to the liquid inlet direction, the temperature difference between the outlet air temperatures corresponding to different air outlet positions can be obtained, and the current dredging position information on the hairpin tube in the indoor heat exchanger of the air conditioner can be determined according to the temperature difference. In some embodiments, it can include: starting from one end of the belt-shaped air outlet according to the liquid inlet direction, obtaining the outlet air temperature of two or more positions of the belt-shaped air outlet one by one, and obtaining the temperature difference between the outlet air temperature corresponding to each position and the outlet air temperature corresponding to the last position; in the case that the current temperature difference is greater than the last temperature difference by a set value, and the next temperature difference is greater than the current temperature difference, determining the to-be-dredged position on the hairpin tube in the indoor heat exchanger of the air conditioner according to the current air outlet position corresponding to the current temperature difference.

[0061] The hairpin tube of the air conditioner can be composed of two or more straight tubes and corresponding bent tubes, and the air conditioner can save the proportional relationship between the strip-shaped air outlet and the hairpin tube. Therefore, the liquid inlet direction can be determined from the end of the strip-shaped air outlet corresponding to the liquid inlet tube of the hairpin tube of the indoor heat exchanger, and the outlet air temperature of the two or more positions of the strip-shaped air outlet can be obtained according to the set position interval or the set time interval. After obtaining each current outlet air temperature, the current outlet air temperature can be compared with the outlet air temperature corresponding to the previous position, i.e., the previous outlet air temperature, to obtain the current temperature difference between the current outlet air temperature and the previous outlet air temperature. Of course, there is no corresponding temperature difference at the beginning.

[0062] If there is no dirty blockage to be dredged in the hairpin tube of the indoor heat exchanger of the air conditioner, the obtained temperature difference is relatively stable, basically unchanged or changes little. If the temperature difference significantly increases at a certain time, i.e., the current temperature difference is greater than the previous temperature difference by a set value, and the next temperature difference is greater than the current temperature difference, the current position corresponding to the current temperature difference can be determined to determine the position to be dredged on the hairpin tube of the indoor heat exchanger of the air conditioner.

[0063] Since the proportional relationship between the strip-shaped air outlet and the hairpin tube is saved, after the current position of the strip-shaped air outlet corresponding to the current temperature difference is determined, the position to be dredged on each hairpin tube corresponding to the current position can be determined according to the proportional relationship between the strip-shaped air outlet and the hairpin tube.

[0064] The hairpin tube can have one, two or more, so in some embodiments, when the hairpin tube has two or more, the specific hairpin tube can be further determined, i.e., after the position to be dredged on each hairpin tube corresponding to the current position is determined, the method comprises: obtaining the pressure value in each hairpin tube, and determining one or more hairpin tubes as the hairpin tube to be dredged according to the pressure value in the tube; and determining the position to be dredged on the hairpin tube to be dredged as the current dredging position of the air conditioner.

[0065] The liquid outlet pressure valve arranged on the corresponding liquid outlet pipe connected to each hairpin tube can detect the pressure value of the liquid outlet pressure valve to obtain the pressure value in each hairpin tube. If the detected current pressure value in the tube is greater than a certain set value, it can be determined that the corresponding current hairpin tube has a dirty blockage to be dredged, i.e., the current hairpin tube can be determined as the hairpin tube to be dredged, so that the position to be dredged on the hairpin tube to be dredged is determined as the current dredging position of the air conditioner.

[0066] Step 103: According to the current dredging position information, control the liquid inlet pressure valve and the liquid outlet pressure valve of the corresponding hairpin tube to perform dredging processing.

[0067] The current dredging position on the hairpin tube in the air conditioner indoor heat exchanger is determined, that is, the current dredging position information is obtained, so that the corresponding hairpin tube is determined as the current hairpin tube according to the current dredging position information; the current liquid inlet pressure valve of the current hairpin tube is opened, and the corresponding current liquid outlet pressure valve is closed, and the pressure value of the current liquid outlet pressure valve is monitored; in the case that the monitored current pressure value is greater than or equal to the set pressure value, the current liquid outlet pressure valve is opened.

[0068] The current liquid inlet pressure valve of the current hairpin tube is opened, and the corresponding current liquid outlet pressure valve is closed, so that the liquid in the current hairpin tube increases, so that the current monitored current pressure value is greater than or equal to the set pressure value, and the current liquid outlet pressure valve can be opened, so that the liquid refrigerant can be flushed in the hairpin tube to dredge.

[0069] Because the pressure generated by the gas is much greater than that of the liquid with the same amount of refrigerant, in some embodiments, after the corresponding current liquid outlet pressure valve is closed, the air conditioner is controlled to run in the heating mode, so that the gas-liquid ratio in the pipeline is increased, the proportion of other refrigerants is increased, and the pressure in the hairpin tube is increased. In some embodiments, the compressor can also be subjected to frequency conversion processing, so that the pressure in the hairpin tube is continuously increased, so that when the current monitored current pressure value is greater than or equal to the set pressure value, the current liquid outlet pressure valve is completely opened, so that the high-pressure refrigerant gas carries the liquid refrigerant to rapidly flush in the hairpin tube, and the dredging of the hairpin tube is realized.

[0070] It can be seen that in the embodiments of the present disclosure, during the running of the air conditioner, the working current of the air conditioner indoor fan is monitored to determine that the hairpin tube in the air conditioner indoor heat exchanger has a dirty blockage phenomenon, the dredging position information of the hairpin tube is determined according to the temperature difference corresponding to the air conditioner strip air outlet, and the liquid inlet pressure valve and the liquid outlet pressure valve of the corresponding hairpin tube are controlled for dredging processing, so that the dirty blockage detection and cleaning of the air conditioner are automatically completed, the service life of the air conditioner is improved, and the comfort of the user experience is improved. When the dredging processing is performed, the air conditioner is controlled to run in the heating mode, and the compressor is subjected to frequency conversion processing, so that the gas-liquid ratio in the pipeline of the hairpin tube is increased, and the pressure in the pipeline can be continuously increased, so that when the pressure value of the liquid outlet pipe position reaches the set pressure value and the liquid outlet pressure valve is completely opened, the high-pressure refrigerant gas carries the liquid refrigerant to rapidly flush in the hairpin tube, and the efficiency of dredging is further improved.

[0071] The operation flow is combined into specific embodiments below to illustrate the air conditioner heat exchanger dredging control process provided by the embodiments of the present disclosure.

[0072] In an embodiment of the present disclosure, the indoor heat exchanger of the air conditioner comprises a hairpin tube, and corresponding liquid inlet pipe and liquid outlet pipe, and the liquid inlet pressure valve and the liquid outlet pressure valve are arranged in the liquid inlet pipe and the liquid outlet pipe respectively, and the air conditioner stores the proportional relationship between the strip-shaped air outlet and the hairpin tube.

[0073] Figure 2 is a flowchart of a method for unclogging control of an air conditioner heat exchanger provided by an embodiment of the present disclosure. As shown in Figure 2 , the unclogging control process of the air conditioner heat exchanger comprises:

[0074] Step 201: The air conditioner obtains the current working current of the indoor fan of the air conditioner in the running state.

[0075] Step 202: The air conditioner determines whether the current working current is greater than the preset working current. If yes, step 203 is executed, otherwise, the process is ended.

[0076] Step 203: The air conditioner determines whether a unclogging command is received. If yes, step 204 is executed, otherwise, the process is ended.

[0077] Among them, the order of step 202 and step 203 can not be limited, and step 203 can be executed before step 202.

[0078] Step 204: According to the liquid inlet direction, the air conditioner obtains the air outlet temperature of two or more positions of the strip-shaped air outlet from one end of the strip-shaped air outlet as the starting point, and obtains the temperature difference between the air outlet temperature corresponding to each position and the air outlet temperature corresponding to the previous position.

[0079] Step 205: The air conditioner determines whether there is a current temperature difference. Among them, the current temperature difference is greater than the previous temperature difference by a set value, and the next temperature difference is greater than the current temperature difference. If yes, step 206 is executed, otherwise, the process is ended.

[0080] When the monitored temperature difference starts to increase from a certain section, the position of the unclogging hairpin tube can be determined.

[0081] Step 206: The air conditioner determines the current position of the strip-shaped air outlet corresponding to the current temperature difference.

[0082] Step 207: The air conditioner determines the unclogging position on the hairpin tube corresponding to the current position according to the proportional relationship between the strip-shaped air outlet and the hairpin tube.

[0083] Step 208: The liquid inlet pressure valve corresponding to the hairpin tube is opened, and the corresponding liquid outlet pressure valve is closed, and the pressure value of the liquid outlet pressure valve is monitored.

[0084] Step 209: The air conditioner determines whether the current pressure value is greater than or equal to the set pressure value. If yes, step 210 is executed, otherwise, step 208 is returned.

[0085] Step 210: The air conditioner opens the liquid outlet pressure valve to flush the liquid refrigerant in the current hairpin tube to achieve dredging.

[0086] It can be seen that in the embodiment, the existence of the dirty blockage of the hairpin tube in the air conditioner indoor heat exchanger is determined by monitoring the working current of the air conditioner indoor fan, and the specific dredging position information on the hairpin tube is determined according to the temperature difference corresponding to the air conditioner strip air outlet, and then the liquid inlet pressure valve and the liquid outlet pressure valve of the corresponding hairpin tube are controlled for dredging treatment, thereby automatically completing the dirty blockage detection of the air conditioner heat exchanger and the dredging of the hairpin tube, and improving the service life of the air conditioner and the comfort of user experience.

[0087] In an embodiment of the present disclosure, the indoor heat exchanger of the air conditioner includes two or more hairpin tubes, and a liquid inlet pipe and a liquid outlet pipe corresponding to each hairpin tube, and a liquid inlet pressure valve and a liquid outlet pressure valve are arranged in the liquid inlet pipe and the liquid outlet pipe respectively, and the air conditioner saves the proportional relationship between the strip air outlet and the hairpin tube.

[0088] Figure 3 is a flowchart of a method for air conditioner heat exchanger dredging control provided by an embodiment of the present disclosure. As shown in Figure 3 , the air conditioner heat exchanger dredging control process includes:

[0089] Step 301: The air conditioner obtains the current working current of the air conditioner indoor fan in the running state.

[0090] Step 302: The air conditioner determines whether the current working current is greater than the preset working current. If yes, step 303 is executed, otherwise, the flow ends.

[0091] Step 303: According to the liquid inlet direction, taking one end of the strip air outlet as the starting point, the air conditioner obtains the outlet air temperature of two or more positions of the strip air outlet, and obtains the temperature difference between the outlet air temperature corresponding to each position and the outlet air temperature corresponding to the previous position.

[0092] Step 304: The air conditioner determines whether there is a current temperature difference. Wherein, the current temperature difference is greater than the previous temperature difference by a set value, and the next temperature difference is greater than the current temperature difference. If yes, step 305 is executed, otherwise, the flow ends.

[0093] Step 305: The air conditioner determines the current position of the strip air outlet corresponding to the current temperature difference.

[0094] Step 306: The air conditioner determines the to-be-dredged position on the hairpin tube corresponding to the current position according to the proportional relationship between the strip air outlet and the hairpin tube.

[0095] Step 307: The air conditioner obtains the pressure value of each hairpin tube corresponding to the liquid outlet pressure valve, and determines one or more hairpin tubes as the unclogging hairpin tube according to the pressure value.

[0096] The air conditioner can obtain the pressure value of each hairpin tube corresponding to the liquid outlet pressure valve, and in the case that the obtained pressure value is greater than a certain set value, the corresponding hairpin tube can be determined as the unclogging hairpin tube.

[0097] Step 308: The air conditioner determines the current unclogging position of the air conditioner as the unclogging position of the unclogging hairpin tube.

[0098] Step 309: The air conditioner determines one unclogging hairpin tube as the current hairpin tube.

[0099] Step 310: The air conditioner opens the current liquid inlet pressure valve of the current hairpin tube, closes the corresponding current liquid outlet pressure valve, controls the air conditioner to run in the heating mode, and performs the frequency increasing processing on the compressor.

[0100] Step 311: The air conditioner monitors the pressure value of the current liquid outlet pressure valve.

[0101] Step 312: The air conditioner determines whether the current pressure value is greater than or equal to the set pressure value. If yes, step 313 is executed, otherwise, step 311 is returned.

[0102] Step 313: The air conditioner opens the current liquid outlet pressure valve to allow the high-pressure refrigerant gas to carry the liquid refrigerant to flush quickly in the current hairpin tube for unclogging.

[0103] Step 314: The air conditioner determines whether all unclogging hairpin tubes have been unclogged. If yes, the current process is ended, otherwise, step 309 is returned.

[0104] It can be seen that in the embodiment, during the running process of the air conditioner, by monitoring the working current of the air conditioner indoor fan, when the dirty blockage phenomenon of the hairpin tube in the air conditioner indoor heat exchanger is determined, the specific unclogging hairpin tube and the corresponding specific unclogging position information can be determined according to the temperature difference corresponding to the air conditioner strip air outlet and the pressure value of each hairpin tube corresponding to the tube, and after the liquid inlet pressure valve of the corresponding hairpin tube is opened and the liquid outlet pressure valve is closed, the air conditioner is controlled to run in the heating mode and the frequency increasing processing is performed on the compressor, so as to increase the gas-liquid ratio in the hairpin tube and continuously increase the pressure in the tube, so that the pressure value of the liquid outlet tube position reaches the set pressure value, and when the liquid outlet pressure valve is fully opened, the high-pressure refrigerant gas carrying the liquid refrigerant can flush quickly in the hairpin tube. Not only the dirty blockage detection and unclogging of the air conditioner are automatically completed, the service life of the air conditioner and the comfort of the user experience are improved, but also the unclogging efficiency is further improved.

[0105] According to the process for the clogging control of the air conditioner heat exchanger, a device for the clogging control of the air conditioner heat exchanger can be constructed.

[0106] Figure 4 is a structural schematic diagram of a device for clogging control of an air conditioner heat exchanger provided by an embodiment of the present disclosure. As shown in Figure 4 The device for clogging control of the air conditioner heat exchanger 400 includes an acquisition module 410, a clogging determination module 420, and a clogging control module 430.

[0107] The acquisition module 410 is configured to acquire a current working current of an air conditioner indoor fan in a running state.

[0108] The clogging determination module 420 is configured to, in a case where the current working current is greater than a preset working current, determine current clogging position information on a hairpin tube in an air conditioner indoor heat exchanger according to a temperature difference corresponding to a belt-shaped air outlet of the air conditioner.

[0109] The clogging control module 430 is configured to control a liquid inlet pressure valve and a liquid outlet pressure valve of a corresponding hairpin tube according to the current clogging position information to perform clogging processing.

[0110] In some embodiments, the device further includes a clogging operation module configured to receive a clogging command or determine that a current coil temperature of the air conditioner acquired is greater than or equal to a freezing temperature.

[0111] In some embodiments, the clogging determination module 420 includes:

[0112] A temperature difference monitoring unit is configured to, according to a liquid inlet direction, take one end of the belt-shaped air outlet as a starting point, acquire air outlet temperatures of two or more positions of the belt-shaped air outlet one by one, and obtain a temperature difference between an air outlet temperature corresponding to a current position and an air outlet temperature corresponding to a previous position.

[0113] A position determination unit is configured to, in a case where a current temperature difference is greater than a previous temperature difference by a set value and a next temperature difference is greater than the current temperature difference, determine a to-be-clogged position on a hairpin tube of the air conditioner indoor heat exchanger according to the current position corresponding to the current temperature difference.

[0114] In some embodiments, the position determination unit is specifically configured to determine a current position of the belt-shaped air outlet corresponding to the current temperature difference, and determine a to-be-clogged position on each hairpin tube corresponding to the current position according to a proportional relationship between the belt-shaped air outlet and the hairpin tube.

[0115] In some embodiments, the clogging determination module 420 further includes a pipe fitting determination unit configured to acquire a pipe internal pressure value corresponding to each hairpin tube, and determine one or more hairpin tubes as to-be-clogged hairpin tubes according to the pipe internal pressure value; and determine the to-be-clogged position on the to-be-clogged hairpin tube as the current clogging position of the air conditioner.

[0116] In some embodiments, the unclogging control module 430 is specifically configured to determine a corresponding hairpin tube as a current hairpin tube according to the current unclogging position information, open a current liquid inlet pressure valve of the current hairpin tube and close a corresponding current liquid outlet pressure valve, and monitor a pressure value of the current liquid outlet pressure valve; and open the current liquid outlet pressure valve when the monitored current pressure value is greater than or equal to a set pressure value.

[0117] In some embodiments, the unclogging control module 430 is further configured to control the air conditioner to operate in a heating mode and perform frequency increase processing on the compressor after closing the corresponding current liquid outlet pressure valve.

[0118] The air conditioner heat exchanger unclogging control process of the air conditioner heat exchanger unclogging control device is further described below in combination with embodiments.

[0119] In this embodiment, the indoor heat exchanger of the air conditioner includes two or more hairpin tubes, and a liquid inlet pipe and a liquid outlet pipe corresponding to each hairpin tube, and a liquid inlet pressure valve and a liquid outlet pressure valve are configured in the liquid inlet pipe and the liquid outlet pipe, respectively, and the air conditioner stores the proportional relationship between the strip-shaped air outlet and the hairpin tube.

[0120] Figure 5 is a structural schematic diagram of an air conditioner heat exchanger unclogging control device provided by the embodiments of the present disclosure. As shown in Figure 5 The air conditioner heat exchanger unclogging control device 400 includes an acquisition module 410, an unclogging determination module 420, and an unclogging control module 430, and further includes an unclogging operation module 440. The unclogging determination module 420 includes a temperature difference monitoring unit 421, a position determination unit 422, and a pipe determination unit 423.

[0121] In this embodiment, during the operation of the air conditioner, the dredging operation module 440 receives a dredging command, so that the acquisition module 410 acquires the current working current of the indoor fan of the air conditioner in the running state. And in the case where the current working current is greater than the preset working current, the temperature difference monitoring unit 421 in the dredging determination module 420 acquires the outlet air temperature of two or more positions of the strip-shaped air outlet according to the liquid inlet direction, taking one end of the strip-shaped air outlet as the starting point, and obtains the temperature difference between the outlet air temperature corresponding to each position and the outlet air temperature corresponding to the previous position. Among them, if the current temperature difference is greater than the previous temperature difference by a set value, and the next temperature difference is greater than the current temperature difference, the position determination unit 422 determines the current position of the strip-shaped air outlet corresponding to the current temperature difference, and determines the dredging position on the hairpin tube corresponding to the current position according to the proportional relationship between the strip-shaped air outlet and the hairpin tube. In this way, the pipe determination unit 423 can acquire the pipe pressure value corresponding to each hairpin tube, and determine one or more hairpin tubes as the dredging hairpin tube according to the pipe pressure value, and determine the dredging position on the dredging hairpin tube as the current dredging position of the air conditioner.

[0122] Therefore, the dredging control module 430 can perform dredging processing on the dredging hairpin tube one by one, wherein the dredging control module 430 can determine one dredging hairpin tube as the current hairpin tube, open the current liquid inlet pressure valve of the current hairpin tube, close the corresponding current liquid outlet pressure valve, control the air conditioner to run in the heating mode, and perform frequency up processing on the compressor, then monitor the pressure value of the current liquid outlet pressure valve, and in the case where the monitored current pressure value is greater than or equal to the set pressure value, open the current liquid outlet pressure valve, so that the high-pressure refrigerant gas carries the liquid refrigerant to perform rapid flushing in the current hairpin tube to dredge.

[0123] It can be seen that in this embodiment, during the operation of the air conditioner, the device for controlling the dredging of the air conditioner heat exchanger can determine the specific dredging hairpin tube and the specific dredging position information according to the temperature difference corresponding to the strip-shaped air outlet of the air conditioner and the pipe pressure value corresponding to each hairpin tube after determining that the hairpin tube in the indoor heat exchanger of the air conditioner exists dirty blockage phenomenon by monitoring the working current of the indoor fan of the air conditioner, and control the liquid inlet pressure valve of the corresponding hairpin tube to be opened and the liquid outlet pressure valve to be closed, then control the air conditioner to run in the heating mode and perform frequency up processing on the compressor, thereby increasing the gas-liquid ratio in the pipeline of the hairpin tube and continuously increasing the pressure in the pipeline, so that the pressure value of the liquid outlet pipe position reaches the set pressure value, and when the liquid outlet pressure valve is fully opened, the high-pressure refrigerant gas carrying the liquid refrigerant can perform rapid flushing in the hairpin tube. Not only automatically completes the dirty blockage detection and dredging of the air conditioner, improves the service life and user experience comfort of the air conditioner, but also further improves the efficiency of dredging.

[0124] In combination Figure 6The embodiment of the present disclosure provides a device 600 for air conditioner heat exchanger dredging control, comprising:

[0125] The processor 1000 and the memory 1001 can also include a communication interface 1002 and a bus 1003. The processor 1000, the communication interface 1002, and the memory 1001 can communicate with each other through the bus 1003. The communication interface 1002 can be used for information transmission. The processor 1000 can call the logical instructions in the memory 1001 to execute the method for air conditioner heat exchanger dredging control of the above-mentioned embodiment.

[0126] In addition, the logical instructions in the memory 1001 described above can be realized in the form of a software function unit and sold or used as an independent product, which can be stored in a computer readable storage medium.

[0127] The memory 1001 as a kind of computer readable storage medium can be used to store software programs, computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 1000 executes the program instructions / modules stored in the memory 1001, thereby executing functional applications and data processing, i.e. realizing the method for air conditioner heat exchanger dredging control in the above-mentioned method embodiment.

[0128] The memory 1001 can include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application required by a function; the data storage area can store data created according to the use of the terminal device, etc. In addition, the memory 1001 can include a high-speed random access memory, and can also include a non-volatile memory.

[0129] The embodiment of the present disclosure provides a device for air conditioner heat exchanger dredging control, comprising: a processor and a memory storing program instructions, the processor is configured to execute the method for air conditioner heat exchanger dredging control when executing the program instructions.

[0130] In combination with Figure 7The air conditioner 700 comprises an air conditioner body and the above-mentioned clogging control device 400 (600) for the air conditioner heat exchanger. The clogging control device 400 (600) for the air conditioner heat exchanger is installed on the air conditioner body. The installation relationship described herein is not limited to placing inside the product, but also includes installation connection with other components of the product, including but not limited to physical connection, electrical connection or signal transmission connection, etc. Those skilled in the art can understand that the clogging control device 400 (600) for the air conditioner heat exchanger can be adapted to a feasible air conditioner body, thereby realizing other feasible embodiments.

[0131] The embodiment of the present disclosure provides a storage medium, which stores program instructions. When the program instructions are executed, the method for clogging control of the air conditioner heat exchanger is executed.

[0132] The embodiment of the present disclosure provides a computer program product, which comprises a computer program stored on a storage medium. The computer program comprises program instructions, which, when executed by a computer, cause the computer to execute the above-mentioned method for clogging control of the air conditioner heat exchanger.

[0133] The above-mentioned storage medium can be a transitory computer readable storage medium or a non-transitory computer readable storage medium.

[0134] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product. The computer software product is stored in a storage medium and comprises one or more instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiment of the present disclosure. The above-mentioned storage medium can be a non-transitory storage medium, including a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc. various media that can store program codes, or a transitory storage medium.

[0135] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or replace parts and features of other embodiments. The scope of the embodiments of this disclosure includes the entire scope of the claims and all available equivalents of the claims. While the terms “first,” “second,” etc., may be used in this application to describe elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, a first element may be called a second element without changing the meaning of the description, and similarly, a second element may be called a first element, provided that all occurrences of “first element” are consistently renamed and all occurrences of “second element” are consistently renamed. First and second elements are both elements, but may not be the same element. Moreover, the terminology used in this application is only for describing embodiments and is not intended to limit the claims. As used in the description of the embodiments and claims, unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “the” are intended to also include the plural forms. Similarly, the term “and / or” as used herein means including one or more of the associated listed elements and all possible combinations thereof. Additionally, when used herein, the terms “comprise” and its variations “comprises” and / or “comprising” refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase “comprising an…” does not exclude the presence of additional identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0136] Those skilled in the art can understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. The skilled person can use different methods for each specific application to realize the described functions, but such implementation should not be considered beyond the scope of the embodiments of the present disclosure. The skilled person can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

[0137] In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the above-described device embodiments are only schematic, for example, the division of the units can only be a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms. The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to implement the embodiments. In addition, each functional unit in the embodiments of the present disclosure can be integrated in one processing unit, or each unit can be a physically independent unit, or two or more units can be integrated in one unit.

[0138] The computer program instructions can also be loaded onto a computer, other programmable data processing apparatus, or other processing device to cause a series of operational steps to be performed on the computer, other programmable apparatus or other processing device to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions / acts specified in the flowchart and / or block diagram block or blocks.

Claims

1. A method for heat exchanger unblocking control of an air conditioner, characterized by, The method comprises: acquiring a current working current of the indoor fan of the air conditioner in a running state; in a case where the current working current is greater than a preset working current, determining a current dredging position information of a hairpin tube in the indoor heat exchanger of the air conditioner according to a temperature difference corresponding to a strip-shaped air outlet of the air conditioner; controlling an inlet pressure valve and an outlet pressure valve of the corresponding hairpin tube according to the current dredging position information to perform dredging processing; wherein the determining of the current dredging position information of the hairpin tube in the indoor heat exchanger of the air conditioner comprises: starting from one end of the strip-shaped air outlet in the inlet direction, acquiring the outlet air temperature of two or more positions of the strip-shaped air outlet one by one, and obtaining the temperature difference between the outlet air temperature corresponding to each position and the outlet air temperature corresponding to the previous position; in a case where the current temperature difference is greater than the previous temperature difference by a set value, and the next temperature difference is greater than the current temperature difference, determining a to-be-dredged position of the hairpin tube in the indoor heat exchanger of the air conditioner according to the current temperature difference.

2. The method of claim 1, wherein, Before the determining of the current dredging position information of the hairpin tube in the indoor heat exchanger of the air conditioner, the method further comprises: receiving a dredging command; or determining that the current coil temperature of the air conditioner acquired is greater than or equal to a freezing temperature.

3. The method of claim 1, wherein, The determining of the to-be-dredged position of the hairpin tube in the indoor heat exchanger of the air conditioner comprises: determining a current position of the strip-shaped air outlet corresponding to the current temperature difference; determining the to-be-dredged position of each hairpin tube corresponding to the current position according to the proportional relationship between the strip-shaped air outlet and the hairpin tube.

4. The method of claim 3, wherein, After the determining of the to-be-dredged position of each hairpin tube corresponding to the current position, the method comprises: acquiring a pipe pressure value corresponding to each hairpin tube, and determining one or more hairpin tubes as to-be-dredged hairpin tubes according to the pipe pressure value; determining the to-be-dredged position of the to-be-dredged hairpin tube as the current dredging position of the air conditioner.

5. The method according to any one of claims 1 to 4, characterized in that, The dredging processing comprises: determining the corresponding hairpin tube as a current hairpin tube according to the current dredging position information; opening the current inlet pressure valve of the current hairpin tube, closing the corresponding current outlet pressure valve, and monitoring the pressure value of the current outlet pressure valve; in a case where the monitored current pressure value is greater than or equal to a set pressure value, opening the current outlet pressure valve.

6. The method of claim 5, wherein, After the closing of the corresponding current outlet pressure valve, the method further comprises: controlling the air conditioner to run in a heating mode and performing frequency increasing processing on the compressor.

7. A device for air conditioner heat exchanger unclogging control, characterized by, comprises: an acquisition module configured to acquire a current working current of the indoor fan of the air conditioner in a running state; a dredging determination module configured to, in a case where the current working current is greater than a preset working current, determine a current dredging position information of a hairpin tube in the indoor heat exchanger of the air conditioner according to a temperature difference corresponding to a strip-shaped air outlet of the air conditioner; a dredging control module configured to control an inlet pressure valve and an outlet pressure valve of the corresponding hairpin tube according to the current dredging position information to perform dredging processing; wherein the dredging determination module comprises: The temperature difference monitoring unit is configured to, according to the liquid inlet direction, take the one end of the strip-shaped air outlet as a starting point, obtain the air outlet temperature of two or more positions of the strip-shaped air outlet one by one, and obtain the temperature difference between the air outlet temperature corresponding to each position and the air outlet temperature corresponding to the previous position; The position determining unit is configured to, in a case where the current temperature difference is greater than the previous temperature difference by more than a set value, and the next temperature difference is greater than the current temperature difference, determine, according to a current position corresponding to the current temperature difference, a position to be dredged on the hairpin tube of the air conditioner indoor heat exchanger.

8. An apparatus for air conditioner heat exchanger unclogging control, the apparatus comprising a processor and a memory having stored therein program instructions, wherein, The processor is configured to execute the method for air conditioner heat exchanger dredging control according to any one of claims 1 to 6 when executing the program instructions.

9. An air conditioner characterized by comprising: The method comprises: An air conditioner body; The device for air conditioner heat exchanger dredging control according to claim 7 or 8 is installed in the air conditioner body.

10. A storage medium storing program instructions, characterized in that, The program instructions execute the method for air conditioner heat exchanger dredging control according to any one of claims 1 to 6 when running.

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