Self-cleaning auxiliary device and control method thereof

Abstract

The application provides a self-cleaning auxiliary device and a control method thereof. The self-cleaning auxiliary device comprises a frame and an auxiliary assembly. The frame is fixedly connected with an outdoor unit main body. The frame is provided with a mounting groove and a through opening. The mounting groove and the through opening are adjacently and communicatively arranged. The through opening is correspondingly arranged with an air inlet of the outdoor unit main body. The auxiliary assembly is located in the mounting groove. The auxiliary assembly comprises a rotating member and a baffle. The rotating member is rotatably connected with the frame. The baffle is wound on the rotating member. The rotating member rotates to drive the baffle to slide along the length direction of the through opening to close or open the air inlet. According to the application, when the air conditioner is self-cleaning, the baffle slides to close the air inlet, thereby cutting off the air flow to the interior of the outdoor unit, intensifying the temperature reduction of the heat exchanger, and further accelerating the frosting of the heat exchanger to improve the self-cleaning efficiency of the air conditioner and strengthen the frosting effect. Meanwhile, the strengthened frosting effect helps to more completely peel off the dirt attached to the machine to improve the self-cleaning effect.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a self-cleaning auxiliary device and a control method thereof. Background Art

[0002] When the air conditioner is running, the fan blades rotate, drawing air from the outside environment into the air inlet, passing through the heat exchanger, and out the outlet. During this process, impurities such as dust and large particles in the air gradually settle and adhere to the surface of the heat exchanger fins. Long-term dust accumulation can gradually reduce the heat transfer efficiency of the heat exchanger, affecting the air conditioner's cooling and heating performance. Therefore, regular cleaning of the air conditioner's heat exchanger is necessary.

[0003] At present, the self-cleaning technology of the heat exchanger mainly removes impurities on the heat exchanger through steps such as condensation, frosting, and defrosting. In actual use, environmental conditions have a great impact on the self-cleaning of the air conditioner, resulting in poor cleaning effect and a long self-cleaning cycle of the air conditioner. Summary of the Invention

[0004] Embodiments of the present invention provide a self-cleaning auxiliary device and a control method thereof to improve the self-cleaning effect and shorten the self-cleaning cycle.

[0005] The present invention provides a self-cleaning auxiliary device, comprising:

[0006] A frame, the frame being fixedly connected to the outer unit body, the frame being provided with a mounting groove and a through opening, the mounting groove being adjacent to and communicating with the through opening, and the through opening being provided corresponding to the air inlet of the outer unit body;

[0007] an auxiliary component, located in the mounting groove, comprising a rotating member and a baffle, wherein the rotating member is rotatably connected to the frame, and the baffle is wound on the rotating member;

[0008] The rotating member rotates to drive the baffle to slide along the length direction of the opening to close or open the air inlet.

[0009] In the self-cleaning auxiliary device provided by the present invention, the auxiliary component further includes an infrared sensor, which is fixed on a side surface of the baffle facing the air inlet, and is used to monitor the status and dirtiness of the heat exchanger.

[0010] In the self-cleaning auxiliary device provided by the present invention, the auxiliary component further includes a heating element, and the heating element is arranged on a side surface of the baffle facing the air inlet along the length direction of the baffle.

[0011] In the self-cleaning auxiliary device provided by the present invention, the frame is further provided with a slide rail, which extends from one side of the installation groove along the circumference of the through opening and is arranged around the through opening, and the slide rail is slidably connected to the baffle.

[0012] In the self-cleaning auxiliary device provided by the present invention, the auxiliary component further includes a sensing device, which is fixed on a side of the slide rail away from the mounting groove and is used to sense the baffle.

[0013] In the self-cleaning auxiliary device provided by the present invention, the rotating member includes a motor and a rotating shaft, the motor is rotatably connected to the rotating shaft, the rotating shaft is extended along the height direction of the mounting groove, and the baffle is wound on the rotating shaft.

[0014] The present invention also provides a control method for a self-cleaning auxiliary device, which is applied to any of the above-mentioned self-cleaning auxiliary devices, and comprises:

[0015] Acquiring a real-time temperature of the heat exchanger, and determining a cleaning stage of the heat exchanger based on the real-time temperature and a preset temperature, wherein the cleaning stage includes a frosting stage and a defrosting stage;

[0016] If the heat exchanger is in a frosting stage, the baffle is controlled to slide to block the opening;

[0017] If the heat exchanger is in the defrosting stage, the heating element is turned on.

[0018] The step of obtaining the real-time temperature of the heat exchanger and determining the cleaning stage of the heat exchanger according to the real-time temperature and the preset temperature of the heat exchanger according to the present invention includes:

[0019] Obtaining a frosting temperature of the heat exchanger, and determining whether the frosting temperature reaches a preset frosting temperature;

[0020] If it is reached, the frosting stage ends and the defrosting stage begins, and the heating element is turned on for heating;

[0021] Obtaining the defrost temperature of the heat exchanger and determining whether the defrost temperature reaches a preset defrost temperature;

[0022] If reached, the defrost phase ends and the heating element is switched off.

[0023] After the step of ending the defrosting stage and turning off the heating element, the present invention further includes:

[0024] Acquiring cleaning data of the heat exchanger and determining whether the cleaning data reaches a preset cleaning value;

[0025] If it is reached, the damper is controlled to open the port and the self-cleaning mode is exited at the same time.

[0026] The step of ending the defrosting phase and closing the heating element of the present application further comprises:

[0027] Receiving a detection instruction, controlling the baffle to block the opening;

[0028] Obtaining the fouling data of the heat exchanger, and obtaining a preset interval corresponding to the fouling data;

[0029] According to the preset interval, the corresponding fouling level is obtained, and the fouling level is fed back to the terminal.

[0030] The present application is provided with the frame on the outdoor unit body of the air conditioner, and the auxiliary assembly is installed in the frame. When the air conditioner enters the self-cleaning mode, the baffle of the auxiliary assembly slides to block the opening of the frame, so as to close the air inlet of the outdoor unit body, so as to avoid the external airflow entering the interior of the outdoor unit body through the air inlet, so as to cut off the air flow, intensify the temperature reduction of the heat exchanger, and then accelerate the frosting of the heat exchanger, so as to improve the self-cleaning efficiency of the air conditioner, shorten the self-cleaning period, and strengthen the frosting effect. At the same time, strengthening the frosting effect helps to more completely peel off the dirt attached to the machine, so that the cleaning is more complete, and the external impurities cannot continue to enter the outdoor unit body, so as to avoid affecting the self-cleaning action of the air conditioner, so as to improve the self-cleaning effect of the air conditioner. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0032] Figure 1 The structure diagram of the frame in the embodiment of the present application;

[0033] Figure 2 The structure diagram of another embodiment of the frame in the embodiment of the present application;

[0034] Figure 3 The structure diagram of the auxiliary assembly in the embodiment of the present application;

[0035] Figure 4 The structure diagram of the baffle blocking the air inlet in the embodiment of the present application;

[0036] Figure 5 The structure diagram of the baffle opening the air inlet in the embodiment of the present application;

[0037] Figure 6 The exploded view of the outdoor unit body and the frame in the embodiment of the present application;

[0038] Figure 7 is a flow chart of a control method of a self-cleaning auxiliary device according to an embodiment of the present invention;

[0039] Figure 8 is a sub-flowchart of a control method of a self-cleaning auxiliary device according to an embodiment of the present invention;

[0040] Figure 9 is a sub-flowchart of a control method of a self-cleaning auxiliary device according to an embodiment of the present invention;

[0041] Figure 10 is a sub-flowchart of a control method of a self-cleaning auxiliary device according to an embodiment of the present invention;

[0042] Figure 11 1. A schematic flow chart of the steps of a method for controlling a self-cleaning auxiliary device according to an embodiment of the present invention;

[0043] Figure 12 2 is a flow chart of another step of the control method of the self-cleaning auxiliary device according to an embodiment of the present invention;

[0044] The reference numerals in the figures are:

[0045] 1. Frame; 11. Mounting slot; 12. Through port; 13. Slide rail; 2. Auxiliary components; 21. Rotating part; 211. Motor; 212. Rotating shaft; 22. Baffle; 23. Infrared sensor; 24. Heating element; 3. External unit body; 31. Air inlet. DETAILED DESCRIPTION

[0046] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. Now, in conjunction with the accompanying drawings, the preferred embodiments of the present invention will be described in detail.

[0047] Reference Figures 1 to 6 As shown, it shows an embodiment of the self-cleaning auxiliary device of the present invention. The self-cleaning auxiliary device includes a frame 1 and an auxiliary component 2. The frame 1 is fixedly connected to the external unit body 3. The frame 1 is provided with a mounting groove 11 and a through-hole 12. The mounting groove 11 is adjacent to and connected to the through-hole 12. The through-hole 12 is provided corresponding to the air inlet 31 of the external unit body 3. The auxiliary component 2 is located in the mounting groove 11. The auxiliary component 2 includes a rotating member 21 and a baffle 22. The rotating member 21 is rotatably connected to the frame 1. The baffle 22 is wound on the rotating member 21. The rotating member 21 rotates, driving the baffle 22 to slide along the length direction of the through-hole 12 to close or open the air inlet 31.

[0048] Specifically, when the air conditioner is running, as the machine blades rotate, air from the external environment enters from the air inlet 31, flows through the heat exchanger, and then flows out from the air outlet. In this process, impurities such as dust and large particles contained in the air will gradually deposit and adhere to the surface of the heat exchanger fins. Long-term dust accumulation will cause the heat exchange performance of the heat exchanger to gradually decrease, affecting the cooling and heating effects of the air conditioner. Therefore, it is necessary to self-clean the heat exchanger from time to time. The self-cleaning auxiliary device is used to assist the air conditioner in self-cleaning the outdoor heat exchanger, thereby improving the self-cleaning efficiency and cleaning effect; the self-cleaning auxiliary device is fixed on the external body 3 of the air conditioner, and is located on the side of the external body 3 where the air inlet 31 is provided; the self-cleaning auxiliary device includes a frame 1 and an auxiliary component 2, the frame 1 is fixedly connected to the external body 3, and the frame 1 is fixed on the edge of the external body 3 along the circumference of the external body 3, the frame 1 is provided with a through opening 12 and a mounting groove 11, and the through opening 12 is provided corresponding to the air inlet 31. The through-port 12 is used to avoid the air inlet 31, thereby ensuring that the air flow can flow through the through-port 12 and through the air inlet 31 to enter the interior of the external unit body 3 and exchange heat with the heat exchanger; the mounting groove 11 is arranged adjacent to the through-port 12, that is, the mounting groove 11 is located on one side of the through-port 12, and the mounting groove 11 is extended along the height direction of the through-port 12, and the mounting groove 11 is used to install other structural parts, thereby improving the structural stability of the frame 1; the mounting groove 11 and the through-port 12 are arranged in communication, that is, the side of the mounting groove 11 close to the through-port 12 is communicated with the through-port 12 along the height direction of the through-port 12, so that the structural parts located in the mounting groove 11 can enter the through-port 12.

[0049] The auxiliary assembly 2 is installed in the installation slot 11, is located at one side of the through port 12, and is located at the front side of the air inlet 31. The auxiliary assembly 2 is used for assisting the self-cleaning of the heat exchanger of the air conditioner. The auxiliary assembly 2 comprises a rotating piece 21 and a baffle 22. The rotating piece 21 is rotationally connected with the frame 1. The rotating piece 21 is used for driving the baffle 22 to move. The baffle 22 is wound on the rotating piece 21. The height of the baffle 22 is consistent with the height of the through port 12. The baffle 22 is used for shielding the through port 12 or opening the through port 12, so as to close or open the air inlet 31. In the initial state, the baffle 22 is wound on the rotating piece 21 and is located in the installation slot 11. At this time, the baffle 22 does not shield the through port 12, so that the air inlet 31 is in an open state. In the use state, the rotating piece 21 drives the baffle 22 to slide. One end of the baffle 22 enters the through port 12 from one side of the through port 12 through the installation slot 11 and slides to the other side of the through port 12 from one side of the through port 12. At this time, the baffle 22 completely shields the through port 12, so that the air inlet 31 is in a closed state.

[0050] When the self-cleaning mode is started, the rotating piece 21 is driven to rotate, so as to drive the baffle 22 wound on the rotating piece 21 to slide along the length direction of the through port 12 towards the direction away from the installation slot 11. One end of the baffle 22 slides to the other side of the through port 12 from one side of the through port 12. The rotation of the rotating piece 21 is stopped. Both ends of the baffle 22 are located at both sides of the through port 12, so that the baffle 22 completely shields the through port 12, so that the air inlet 31 is closed, and the airflow cannot enter the outdoor unit main body 3 along the air inlet 31.

[0051] When the self-cleaning mode is closed, the rotating piece 21 is driven to reverse, so as to drive the baffle 22 to slide along the length direction of the through port 12 towards the direction close to the installation slot 11, so that the baffle 22 is wound on the rotating piece 21 until the baffle 22 is completely located in the installation slot 11. The rotation of the rotating piece 21 is stopped. At this time, the baffle 22 is completely located at one side of the through port 12, the through port 12 is not shielded, so that the air inlet 31 is opened, and the airflow can enter the outdoor unit main body 3 from the outside through the through port 12 and the air inlet 31.

[0052] The present application fixes the frame 1 on the outer body 3 of the air conditioner, and the auxiliary component 2 is installed in the frame 1. When the air conditioner enters the self-cleaning mode, the baffle 22 of the auxiliary component 2 slides to cover the opening 12 of the frame 1, thereby closing the air inlet 31 of the outer body 3 to prevent external air from entering the interior of the outer body 3 through the air inlet 31, thereby cutting off the air circulation, aggravating the temperature drop of the heat exchanger, and then accelerating the frosting of the heat exchanger, so as to improve the self-cleaning efficiency of the air conditioner, shorten the self-cleaning cycle, and enhance the frosting effect; at the same time, enhancing the frosting effect helps to more thoroughly remove the dirt attached to the machine, making the cleaning more thorough, and external impurities cannot continue to enter the outer body 3, so as to avoid affecting the self-cleaning action of the air conditioner, so as to improve the self-cleaning effect of the air conditioner.

[0053] In one embodiment, referring to Figure 3 As shown, the auxiliary component 2 also includes an infrared sensor 23, which is fixed on the side surface of the baffle 22 facing the air inlet 31, and the infrared sensor 23 is used to monitor the state and dirtiness of the heat exchanger. Specifically, the auxiliary component 2 also includes an infrared sensor 23, which is fixed on the baffle 22 and is located on the side surface of the baffle 22 facing the air inlet 31. The infrared sensor 23 is used to monitor the state of the heat exchanger inside the external unit body 3 and the self-cleaning effect. The state of the heat exchanger refers to the state of the heat exchanger in each stage during self-cleaning. For example, the infrared sensor 23 can obtain the temperature of the heat exchanger and feed it back to the controller. The controller can determine whether the heat exchanger is in the frosting stage or the defrosting stage according to the temperature of the heat exchanger, and then control the self-cleaning auxiliary device; the dirtiness can be detected after the heat exchanger defrosts and can be detected at the beginning of the heat exchanger. Detection before self-cleaning: when the infrared sensor 23 detects the contamination condition of the heat exchanger after the heat exchanger is defrosted, the controller can judge the cleaning effect of the heat exchanger according to the contamination condition, thereby judging whether to continue to execute the self-cleaning mode. For example, the infrared sensor 23 can obtain impurity data on the heat exchanger and feed it back to the controller. The controller can judge the self-cleaning effect of the heat exchanger according to the impurity data. If the self-cleaning effect is poor, the self-cleaning mode will continue to be executed. If the self-cleaning effect is good, the self-cleaning mode will be turned off. When the infrared sensor 23 detects the contamination condition of the heat exchanger before the heat exchanger is self-cleaned, the controller can judge the contamination level of the heat exchanger according to the contamination condition to perform the corresponding self-cleaning function.

[0054] In this embodiment, the infrared sensor 23 is provided on one side surface of the baffle 22 facing the air inlet 31. The status information and dirtiness of the heat exchanger are obtained according to the infrared changes of the infrared sensor 23, so that the self-cleaning stage of the heat exchanger can be monitored in real time to control the self-cleaning auxiliary device to provide assistance, thereby reducing the running time of each self-cleaning stage and meeting the expected needs more quickly, thereby shortening the self-cleaning cycle and improving the self-cleaning efficiency; at the same time, the dirtiness level and self-cleaning effect of the heat exchanger can be detected in real time according to the dirtiness level, and corresponding actions can be performed according to different levels and effects, thereby improving the self-cleaning effect and achieving higher accuracy.

[0055] More specifically, there are multiple infrared sensors 23, and the multiple infrared sensors 23 are spaced apart along the length direction of the baffle 22 on the side of the baffle 22 facing the air inlet 31, so as to fully obtain the status and dirtiness of the heat exchanger and improve the detection accuracy.

[0056] In a specific embodiment, referring to Figure 3 As shown, the auxiliary component 2 further includes a heating element 24 , which is arranged on a side surface of the baffle 22 facing the air inlet 31 along the length direction of the baffle 22 . Specifically, the auxiliary component 2 also includes a heating element 24, which is used to generate heat to assist the heat exchanger in defrosting. The heating element 24 is arranged on the baffle 22 along the length direction of the baffle 22 and is located on the side surface of the baffle 22 facing the air inlet 31. The heating element 24 is evenly arranged on the baffle 22, and the multiple infrared sensors 23 are arranged at intervals between the heating element 24, so that the multiple infrared sensors 23 and the heating element 24 do not interfere with each other; when the self-cleaning mode is started, the baffle 22 blocks the opening 12, and one side of the baffle 22 faces the air inlet 31. At this time, the heating element 24 faces the heat exchanger. When the heat exchanger is in the defrosting stage, the heating element 24 is turned on, and the heating element 24 generates heat to assist the heat exchanger in defrosting, thereby improving the defrosting efficiency of the heat exchanger, so as to further improve the self-cleaning efficiency of the air conditioner, until the heat exchanger ends the defrosting stage and the heating element 24 is turned off.

[0057] More specifically, the heating element 24 is a heating wire, which is arranged in a ring shape on the baffle 22 so that the heating wire is evenly arranged on the baffle 22, thereby increasing the heating range of the heating wire and improving the defrosting efficiency.

[0058] In one embodiment, referring to Figures 1 to 2As shown, the frame 1 is further provided with a slide rail 13, which extends from one side of the mounting groove 11 along the circumference of the through opening 12 and is arranged around the through opening 12, and the slide rail 13 is slidably connected to the baffle 22. Specifically, the frame 1 is further provided with a slide rail 13, which is used to limit the sliding of the baffle 22, so that the sliding of the baffle 22 is smoother and the sliding direction of the baffle 22 is guaranteed; the slide rail 13 extends from one side of the mounting groove 11 toward the through opening 12 and extends around the through opening 12 along the circumference of the through opening 12, that is, the slide rail 13 passes through the mounting groove 11 and the through opening 12, and at the same time, the slide rail 13 is formed by the side wall of the frame 1 facing the through opening 12 being recessed inward, that is, the slide rail 13 faces the through opening 12 and is located around the through opening 12, and the slide rail 13 is slidably connected to the baffle 22.

[0059] When the self-cleaning mode is started, the baffle 22 slides from the side of the slide rail 13 close to the mounting groove 11 along the extension direction of the slide rail 13 to the side of the slide rail 13 away from the mounting groove 11. At this time, the baffle 22 completely blocks the opening 12, thereby closing the air inlet 31 and isolating air from entering the external unit body 3; when the self-cleaning mode is ended, the baffle 22 slides from the side of the slide rail 13 away from the mounting groove 11 along the extension direction of the slide rail 13 to the side of the slide rail 13 close to the mounting groove 11, and is located in the mounting groove 11. At this time, the baffle 22 does not block the opening 12, thereby opening the air inlet 31 and allowing air to enter the external unit body 3.

[0060] In this embodiment, the slide rail 13 is provided on the frame 1 so that the baffle 22 slides along the extension direction of the slide rail 13 to improve the smoothness of the sliding of the baffle 22 and limit the sliding range of the baffle 22 to prevent the baffle 22 from separating from the frame 1, thereby improving the structural stability of the self-cleaning auxiliary device.

[0061] In a specific embodiment, the auxiliary component 2 further includes a sensing device (not shown in the figure), which is fixed on the side of the slide rail 13 away from the mounting groove 11 and is used to sense the baffle 22. Specifically, the auxiliary component 2 further includes a sensing device, which is fixed on the side of the slide rail 13 away from the mounting groove 11. The sensing device is used to sense whether the baffle 22 reaches the side of the slide rail 13 away from the mounting groove 11. When the baffle 22 slides from the side of the through-port 12 close to the mounting groove 11 to the side of the through-port 12 away from the mounting groove 11, the baffle 22 abuts the sensing device. At this time, the sensing device senses that the baffle 22 slides to the side of the through-port 12 away from the mounting groove 11, proving that the baffle 22 completely blocks the through-port 12, and the air inlet 31 is closed. The controller receives the sensing information of the sensing device and controls the rotating member 21 to stop rotating, thereby improving the structural stability of the self-cleaning auxiliary device.

[0062] In one embodiment, referring to Figures 1 to 2 As shown, the rotating member 21 includes a motor 211 and a rotating shaft 212 . The motor 211 is rotatably connected to the rotating shaft 212 . The rotating shaft 212 is extended along the height direction of the mounting groove 11 , and the baffle 22 is wound on the rotating shaft 212 . Specifically, the rotating member 21 is used to drive the baffle 22 to slide, so that the baffle 22 can slide along the length direction of the slide rail 13. The rotating member 21 includes a motor 211 and a rotating shaft 212. The motor 211 is electrically connected to the rotating shaft 212. The motor 211 is used to drive the rotating shaft 212 to rotate. The rotating shaft 212 extends along the height direction of the mounting groove 11. The height of the rotating shaft 212 is equal to or greater than the height of the through-port 12. The baffle 22 is wound on the rotating shaft 212. When the motor 211 is turned on, the motor 211 drives the rotating shaft 212 to rotate. At this time, the rotating shaft 212 drives the baffle 22 to slide along the slide rail 13, so that the baffle 22 can cover or open the through-port 12, thereby closing or opening the air inlet 31. The rotating member 21 has a simple structure, low production cost, and is easy to assemble.

[0063] More specifically, the rotating member 21 and the baffle 22 are both installed in the mounting groove 11, and the mounting groove 11 is completely located inside the frame 1, so that the rotating member 21 and the baffle 22 are completely located inside the frame 1, thereby protecting the rotating member 21 and the baffle 22 and improving the safety of the frame 1.

[0064] For example, referring to Figure 2As shown, the external unit body 3 includes two air inlets 31, which are a first air inlet and a second air inlet. The first air inlet and the second air inlet are adjacently arranged on either side of the external unit body 3. The frame 1 includes a first opening and a second opening, which are respectively arranged opposite to the first air inlet and the second air inlet. The self-cleaning auxiliary device includes two auxiliary components 2, which are respectively fixed to the frame 1 adjacent to the first opening and the second opening. The two baffles 22 respectively block or open the first opening and the second opening, thereby opening or closing the first air inlet and the second air inlet. More specifically, the two auxiliary components 2 are independently controlled so as not to interfere with each other, thereby improving the structural stability of the self-cleaning auxiliary device.

[0065] The self-cleaning auxiliary device of the present application can enhance the frosting effect and help to more thoroughly remove the dirt attached to the machine, making the cleaning more thorough and improving the cleaning effect; at the same time, it can accelerate the frosting and defrosting speed, thereby increasing the self-cleaning rate.

[0066] The embodiment of the present invention also provides a control method for a self-cleaning auxiliary device. Figure 11 and Figure 12 is a flow chart of the steps of the control method of the self-cleaning auxiliary device, Figure 7 Flowchart of the control method of the self-cleaning auxiliary device, wherein the steps of the control method of the self-cleaning auxiliary device include S110-S130:

[0067] S110, obtaining a real-time temperature of the heat exchanger, and determining a cleaning stage of the heat exchanger based on the real-time temperature and a preset temperature, wherein the cleaning stage includes a frosting stage and a defrosting stage;

[0068] Specifically, the heat exchanger's self-cleaning technology primarily involves condensation, frosting, defrosting, drainage, and drying stages to automatically clean the heat exchanger surface. Specifically, water droplets condense on the heat exchanger surface, which then transforms into frost. The frost's expansion force separates dust particles from the fins. Next, heating rapidly melts the frost, expelling dust particles along with the condensed water. Finally, drying and high-temperature sterilization are performed to ensure the cleanliness and hygiene of the heat exchanger surface.

[0069] In this embodiment, the cleaning stage refers to the stage in which the heat exchanger is in the self-cleaning mode. The cleaning stage in this embodiment includes a frosting stage and a defrosting stage. The frosting stage refers to the process of turning water droplets on the surface of the heat exchanger into frost, and the defrosting stage refers to the process of melting the frost. The real-time temperature is obtained by detecting the surface of the heat exchanger by the infrared sensor 23. The preset temperature is the temperature data pre-set on the controller, and the preset temperatures for different cleaning stages are different.

[0070] When the heat exchanger is in the self-cleaning mode, it is first necessary to determine which cleaning stage the heat exchanger is in, and to start the self-cleaning auxiliary device according to the cleaning stage of the heat exchanger to assist in cleaning and improve the self-cleaning efficiency; the infrared sensor 23 obtains the real-time temperature of the heat exchanger and feeds it back to the controller, the controller receives the real-time temperature and compares it with the preset temperature to determine the cleaning stage of the heat exchanger at this time. The cleaning stage includes the frosting stage and the defrosting stage, so that the self-cleaning auxiliary device can be controlled to assist in cleaning according to different cleaning stages.

[0071] S120, if the heat exchanger is in the frosting stage, controlling the baffle 22 to slide to cover the opening 12;

[0072] Specifically, if it is detected that the heat exchanger is in the frosting stage, the heat exchanger is in a cooling state so that the water on the surface of the heat exchanger condenses into frost. At this time, the baffle 22 is controlled to slide to block the opening 12, thereby closing the air inlet 31 to cut off the air circulation, thereby intensifying the temperature drop of the heat exchanger, causing the surface to frost quickly, shortening the cycle of the frosting stage, and improving the frosting efficiency; at the same time, it prevents external dust from continuing to enter and accumulate on the heat exchanger, thereby improving the cleaning effect.

[0073] S130, if the heat exchanger is in the defrosting stage, turning on the heating element 24;

[0074] Specifically, if it is detected that the heat exchanger is in the defrosting stage, the heat exchanger is in a heating state to melt the frost on the surface of the heat exchanger. Since the defrosting stage is after the frosting stage, the baffle 22 is always in a state of closing the air inlet 31, and the heating element 24 on the baffle 22 is facing the direction of the heat exchanger. At this time, the heating element 24 is turned on to generate heat, thereby increasing the temperature around the heat exchanger, assisting the heat exchanger in defrosting, shortening the defrosting stage cycle, and improving the defrosting efficiency.

[0075] In one embodiment, if Figure 8 As shown, step S110 also includes S111-S114.

[0076] S111. Obtaining a frosting temperature of the heat exchanger, and determining whether the frosting temperature reaches a preset frosting temperature;

[0077] S112, if reached, then end the frosting stage and enter the defrosting stage, while turning on the heating element 24 for heating;

[0078] S113, obtaining the defrost temperature of the heat exchanger, and determining whether the defrost temperature reaches a preset defrost temperature;

[0079] S114: If reached, end the defrosting stage and turn off the heating element 24.

[0080] Specifically, the heat exchanger has different temperatures in different cleaning stages. When the heat exchanger is in the frosting stage, the frosting temperature of the heat exchanger is obtained by the infrared sensor 23. The frosting temperature is the real-time temperature of the heat exchanger in the frosting stage. The controller compares the frosting temperature with the preset frosting temperature to determine whether the frosting temperature reaches the preset frosting temperature. The preset frosting temperature refers to the expected temperature pre-set in the controller. The preset frosting temperature is the expected temperature corresponding to the thickness of the frost layer after frosting in the expected state. The preset frosting temperature can be verified and determined according to different product development stages; if the frosting temperature of the heat exchanger reaches the preset The preset frosting temperature indicates that the thickness of the frost layer generated on the surface of the heat exchanger has reached the expected value. At this time, the frosting stage can be ended and the defrosting stage can be entered, that is, the cooling mode is turned off and the heating mode is turned on, and the heating element 24 is turned on at the same time to assist heating and improve the defrosting efficiency; if the frosting temperature of the heat exchanger does not reach the preset frosting temperature, it indicates that the thickness of the frost layer generated on the surface of the heat exchanger has not reached the expected value, and the frost layer thickness is not enough. It is necessary to continue the frosting stage and continue cooling to allow the heat exchanger surface to continue to frost until the frost layer thickness of the heat exchanger reaches the expected value, that is, until the frosting temperature is lower than or equal to the preset frosting temperature, and then end the frosting stage.

[0081] When the heat exchanger is in the defrosting stage, the defrosting temperature of the heat exchanger is obtained in real time through the infrared sensor 23. The defrosting temperature is the real-time temperature of the heat exchanger in the defrosting stage. The controller compares the defrosting temperature with the preset defrosting temperature to determine whether the defrosting temperature reaches the preset defrosting temperature. The preset defrosting temperature refers to the expected temperature pre-set in the controller. The preset defrosting temperature is the surface temperature of the heat exchanger before frost. The preset defrosting temperature can be verified and determined according to different product development stages; if the defrosting temperature of the heat exchanger reaches the preset defrosting temperature, The preset defrost temperature indicates that the frost layer on the surface of the heat exchanger has been completely melted, and the defrost stage can be ended at this time, that is, the heating mode is turned off, and the heating element 24 is turned off at the same time; if the defrost temperature of the heat exchanger does not reach the preset defrost temperature, it indicates that there is still a frost layer on the surface of the heat exchanger, and the defrost stage needs to continue, and heating and the heating element 24 are continued to be turned on to allow the heat exchanger surface to continue to defrost until the defrost temperature of the heat exchanger reaches the preset defrost temperature, that is, until the defrost temperature is higher than or equal to the preset defrost temperature and then the defrost stage is ended.

[0082] In this embodiment, the infrared sensor 23 monitors the temperature of the heat exchanger in the frosting stage and the defrosting stage in real time, and combines the control logic analysis and judgment to adjust the self-cleaning process of the heat exchanger to help speed up the frosting and defrosting process of the heat exchanger.

[0083] In one embodiment, if Figure 9 As shown, after step S114, steps S1141-S1142 are also included.

[0084] S1141. Acquire cleaning data of the heat exchanger, and determine whether the cleaning data reaches a preset cleaning value;

[0085] S1142: If reached, control the baffle 22 to open the port 12 and exit the self-cleaning mode.

[0086] Specifically, after the heat exchanger finishes the defrosting stage, it is also necessary to detect the self-cleaning effect of the heat exchanger, and judge whether the heat exchanger is clean by the self-cleaning effect; at this time, it is necessary to obtain the cleaning data of the heat exchanger through the infrared sensor 23, and the cleaning data refers to the distribution data and quantity data of impurities on the surface of the heat exchanger. The controller compares the cleaning data with the preset cleaning value, and the preset cleaning value refers to the value pre-set on the controller, which refers to the expected distribution data and expected quantity data of impurities on the surface of the heat exchanger under the expected state. The preset cleaning value is the clean state of the heat exchanger when the product is produced. Considering the problem of heat exchanger wear during use, there may be a certain state deviation from it. Specifically, the preset cleaning value It can be developed and determined; when the cleaning data reaches the preset cleaning value, it indicates that the dirt condition of the heat exchanger has reached an acceptable range, that is, the self-cleaning of the heat exchanger has been cleaned. At this time, the baffle 22 is controlled to slide in the direction of the installation groove 11 to open the through port 12, thereby opening the air inlet 31 and turning off the self-cleaning mode so that the air conditioner can operate normally; when the cleaning data does not reach the preset cleaning value, it indicates that the dirt condition of the heat exchanger has not reached an acceptable range, that is, the cleaning effect of the heat exchanger is poor, and it is necessary to continue to cycle the self-cleaning mode and clean the heat exchanger again until the self-cleaning effect of the heat exchanger reaches the expected state, and then slide the baffle 22 to open the air inlet 31 and turn off the self-cleaning mode.

[0087] This embodiment monitors the self-cleaning effect in real time. After performing a self-cleaning process, it detects the cleaning effect of the heat exchanger. If the expected requirements are not met, it can enter the self-cleaning process again according to the control logic until the expected self-cleaning effect is achieved, thereby significantly enhancing the self-cleaning effect of the air conditioner.

[0088] In one embodiment, if Figure 10 As shown, the method further includes steps S210-S230.

[0089] S210, receiving a detection instruction and controlling the baffle 22 to block the opening 12;

[0090] S220: Obtain contamination data of the heat exchanger, and obtain a preset interval corresponding to the contamination data;

[0091] S230: Obtain a corresponding dirt level according to the preset interval, and feed the dirt level back to the terminal.

[0092] Specifically, the detection instruction is information sent by the user to the controller through the terminal. After receiving the detection instruction, the controller starts to execute the action of detecting the dirtiness of the heat exchanger; first, the baffle 22 is controlled to block the opening 12 to close the air inlet 31. At this time, the infrared sensor 23 on the baffle 22 is directed towards the heat exchanger, and the heat exchanger is detected to detect the dirtiness of the heat exchanger, obtain the dirtiness data of the heat exchanger, and feed the dirtiness data back to the controller. The dirtiness data refers to the total amount of impurities on the surface of the heat exchanger, that is, data based on the thickness of impurities, dust, etc. accumulated on the heat exchanger; the controller After obtaining the dirt data, a preset interval pre-stored in the controller is obtained according to the dirt data. The preset interval is a range interval of the dirt data pre-set on the controller. There are multiple preset intervals, and different preset intervals correspond to different dirt levels. The controller obtains the dirt level corresponding to the preset interval according to the preset interval. The dirt level is pre-set in the controller. The dirt level in this embodiment includes heavy dirt, very dirty and light dirt. The controller feeds back the dirt level to the terminal. After receiving the dirt level, the user can choose whether to perform the self-cleaning function of the air conditioner according to needs.

[0093] In this embodiment, when the user wants to know the dirtiness and blockage condition of the outdoor unit's heat exchanger and determine whether self-cleaning is required, the baffle 22 can be activated by remote control, and the infrared sensor 23 can be used to detect dust and other impurities on the outdoor unit's heat exchanger, and the information is transmitted to the indoor unit and fed back to the user. The user can choose whether the air conditioner needs to perform self-cleaning operation according to the situation, which brings users a more convenient, efficient and convenient air conditioning experience.

[0094] The control method of the self-cleaning auxiliary device of the present application has an infrared sensor that detects various operating states of the heat exchanger in real time, and with the assistance of the self-cleaning auxiliary device, the time of each cleaning stage is reduced, the expected needs can be met more quickly, and the self-cleaning efficiency is improved. At the same time, it is different from the previous self-cleaning function logic and rigid parameter control. It cannot enter the next step until the expected parameters are reached, resulting in a long self-cleaning cycle. At the same time, the use of the self-cleaning auxiliary device can also detect the dirt and blockage of the outdoor heat exchanger, providing convenience for users to determine whether self-cleaning of the air conditioner outdoor unit is needed.

[0095] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A self-cleaning auxiliary device, characterized in that: include: A frame, the frame being fixedly connected to the outer unit body, the frame being provided with a mounting groove and a through opening, the mounting groove being adjacent to and communicating with the through opening, and the through opening being provided corresponding to the air inlet of the outer unit body; an auxiliary component, located in the mounting groove, comprising a rotating member and a baffle, wherein the rotating member is rotatably connected to the frame, and the baffle is wound on the rotating member; The frame is further provided with a slide rail, which extends from one side of the mounting groove along the circumference of the through opening and is arranged around the through opening, and the slide rail is slidably connected to the baffle; the auxiliary component also includes a sensing device, which is fixed on a side of the slide rail away from the mounting groove and is used to sense the baffle; The rotating member rotates to drive the baffle to slide along the length direction of the opening to close or open the air inlet.

2. The self-cleaning auxiliary device according to claim 1, characterized in that: The auxiliary component further includes an infrared sensor, which is fixed on a side surface of the baffle facing the air inlet, and is used to monitor the status and dirtiness of the heat exchanger.

3. The self-cleaning auxiliary device according to claim 1, characterized in that: The auxiliary component further includes a heating element, which is arranged on a side surface of the baffle facing the air inlet along the length direction of the baffle.

4. The self-cleaning auxiliary device according to any one of claims 1 to 3, characterized in that: The rotating member includes a motor and a rotating shaft. The motor is rotatably connected to the rotating shaft. The rotating shaft is extended along the height direction of the mounting groove, and the baffle is rolled on the rotating shaft.

5. A control method for a self-cleaning auxiliary device, characterized in that: Applied to the self-cleaning auxiliary device according to any one of claims 1 to 4, the method comprises: Acquiring a real-time temperature of the heat exchanger, and determining a cleaning stage of the heat exchanger based on the real-time temperature and a preset temperature, wherein the cleaning stage includes a frosting stage and a defrosting stage; If the heat exchanger is in a frosting stage, the baffle is controlled to slide to block the opening; If the heat exchanger is in the defrosting stage, the heating element is turned on.

6. The method according to claim 5, characterized in that The step of obtaining the real-time temperature of the heat exchanger and determining the cleaning stage of the heat exchanger according to the real-time temperature and a preset temperature includes: Obtaining a frosting temperature of the heat exchanger, and determining whether the frosting temperature reaches a preset frosting temperature; If it is reached, the frosting stage ends and the defrosting stage begins, and the heating element is turned on for heating; Obtaining the defrost temperature of the heat exchanger and determining whether the defrost temperature reaches a preset defrost temperature; If reached, the defrost phase ends and the heating element is switched off.

7. The method according to claim 6, characterized in that After the step of ending the defrosting stage and turning off the heating element, the method includes: Acquiring cleaning data of the heat exchanger and determining whether the cleaning data reaches a preset cleaning value; If it is reached, the damper is controlled to open the port and the self-cleaning mode is exited at the same time.

8. The method according to claim 5, characterized in that The method further comprises: Receive detection instructions and control the baffle to block the opening; Obtaining contamination data of the heat exchanger and obtaining a preset interval corresponding to the contamination data; A corresponding dirt level is acquired according to the preset interval, and the dirt level is fed back to the terminal.

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