Self-cleaning auxiliary device and control method thereof

Abstract

The invention 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 body, the frame is provided with a mounting groove and a through opening, the mounting groove is adjacent to and communicates with the through opening, and the through opening corresponds to an air inlet of the outdoor unit body; the auxiliary assembly is located in the mounting groove and comprises a rotating part and a baffle, the rotating part is rotationally connected with the frame, and the baffle is wound on the rotating part; the rotating piece rotates to drive the baffle to slide in the length direction of the through opening so as to close or open the air inlet. According to the air conditioner, the auxiliary assembly is arranged in the frame, and when the air conditioner is in self-cleaning, the baffle slides to close the air inlet, so that air is prevented from flowing into the outdoor unit, temperature reduction of the heat exchanger is intensified, frosting of the heat exchanger is accelerated, the self-cleaning efficiency of the air conditioner is improved, and the frosting effect is enhanced; and meanwhile, the frosting effect is enhanced, dirt attached to a machine can be more thoroughly stripped, and the self-cleaning effect is improved.

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, as the machine's fan blades rotate, air from the external environment enters from the air inlet, flows through the heat exchanger, and then flows out from the air outlet. During this process, impurities such as dust and large particles 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, so the air conditioner's heat exchanger needs to be cleaned regularly.

[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] The embodiment of the present invention provides 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, which comprises:

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

[0007] An auxiliary component is located in the installation groove, the auxiliary component comprises a rotating member and a baffle, the rotating member is rotatably connected to the frame, and the baffle is rolled on the rotating member;

[0008] 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.

[0009] In the self-cleaning auxiliary device provided by the present invention, the auxiliary component also includes an infrared sensor, which is fixed on a side surface of the baffle facing the air inlet, and is used to monitor the state 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, and the slide rail 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 comprises a sensing device, and the sensing device is fixedly arranged on a side of the slide rail away from the mounting groove, and is used for sensing 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 rolled 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] Acquire the real-time temperature of the heat exchanger, and determine the cleaning stage of the heat exchanger according to the real-time temperature and the 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 cover 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, while 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 turned 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] After the step of ending the defrosting stage and turning off the heating element, the present invention further includes:

[0027] Receive detection instructions and control the baffle to block the opening;

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

[0029] The corresponding dirt level is acquired according to the preset interval, and the dirt level is fed back to the terminal.

[0030] The present application fixes the frame on the outer body of the air conditioner, and the auxiliary component is installed in the frame. When the air conditioner enters the self-cleaning mode, the baffle of the auxiliary component slides to cover the opening of the frame, thereby closing the air inlet of the outer body to prevent external air from entering the inner part of the outer body through the air inlet, 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, 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 THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0032] Figure 1 A structural diagram of a frame in an embodiment of the present invention;

[0033] Figure 2 A structural diagram of another embodiment of a frame in an embodiment of the present invention;

[0034] Figure 3 is a structural diagram of an auxiliary component in an embodiment of the present invention;

[0035] Figure 4 This is a structural diagram of a baffle shielding an air inlet in an embodiment of the present invention;

[0036] Figure 5 This is a structural diagram of the baffle opening the air inlet in an embodiment of the present invention;

[0037] Figure 6 This is an exploded view of the external machine body and frame in an embodiment of the present invention;

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

[0039] Figure 8 is a sub-flow chart of a control method of a self-cleaning auxiliary device in an embodiment of the present invention;

[0040] Fig. 9 is a sub-flow chart of a control method of a self-cleaning auxiliary device in an embodiment of the present invention;

[0041] Fig.10 is a sub-flow chart of a control method of a self-cleaning auxiliary device in an embodiment of the present invention;

[0042] Fig.11 A schematic diagram of the steps of a control method of a self-cleaning auxiliary device according to an embodiment of the present invention;

[0043] Fig.12 It is a schematic flow chart of another step of the control method of the self-cleaning auxiliary device in an embodiment of the present invention;

[0044] The reference numerals in the figures are:

[0045] 1. Frame; 11. Mounting groove; 12. Through hole; 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 in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, the preferred embodiments of the present invention are 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 machine body 3. The frame 1 is provided with a mounting groove 11 and a through-port 12. The mounting groove 11 is adjacent to and connected to the through-port 12. The through-port 12 is arranged corresponding to the air inlet 31 of the external machine 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 rolled on the rotating member 21. The rotating member 21 rotates to drive the baffle 22 to slide along the length direction of the through-port 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 fixedly mounted 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 fixedly mounted 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 arranged corresponding to the air inlet 31, The through opening 12 is used to avoid the air inlet 31, so as to ensure that the air flow can flow through the through opening 12 and through the air inlet 31 to enter the interior of the external machine body 3 and exchange heat with the heat exchanger; the mounting groove 11 is arranged adjacent to the through opening 12, that is, the mounting groove 11 is located on one side of the through opening 12, and the mounting groove 11 is extended along the height direction of the through opening 12, and the mounting groove 11 is used to install other structural parts, so as to improve the structural stability of the frame 1; the mounting groove 11 and the through opening 12 are connected, that is, the side of the mounting groove 11 close to the through opening 12 is connected with the through opening 12 along the height direction of the through opening 12, so that the structural parts located in the mounting groove 11 can enter the through opening 12.

[0049] The auxiliary component 2 is installed in the installation groove 11, the auxiliary component 2 is located on one side of the through opening 12, and the auxiliary component 2 is located on the front side of the air inlet 31, and the auxiliary component 2 is used to assist the air conditioner in self-cleaning the heat exchanger; 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 rotating member 21 is used to drive the baffle 22 to move, the baffle 22 is rolled on the rotating member 21, and the height of the baffle 22 is consistent with the height of the through opening 12, and the baffle 22 is used to cover the through opening 12 or open the through opening 12 , thereby closing or opening the air inlet 31; in the initial state, the baffle 22 is rolled up on the rotating member 21 and is located in the mounting groove 11. At this time, the baffle 22 does not cover the through opening 12, so that the air inlet 31 is in an open state; in the use state, the rotating member 21 drives the baffle 22 to slide, and one end of the baffle 22 enters the through opening 12 from the mounting groove 11 through one side of the through opening 12, and slides from one side of the through opening 12 to the other side of the through opening 12. At this time, the baffle 22 completely covers the through opening 12, so that the air inlet 31 is in a closed state.

[0050] When the self-cleaning mode is turned on, the rotating member 21 is driven to rotate, thereby driving the baffle 22 wound on the rotating member 21, and the baffle 22 slides along the length direction of the through opening 12 toward the direction away from the mounting groove 11, so that one end of the baffle 22 slides from one side of the through opening 12 to the other side of the through opening 12, and the rotation of the rotating member 21 is stopped, so that the two ends of the baffle 22 are respectively located on both sides of the through opening 12, so that the baffle 22 completely blocks the through opening 12, and then the air inlet 31 is closed, and the airflow cannot enter the external machine body 3 along the air inlet 31.

[0051] When the self-cleaning mode is turned off, the rotating member 21 is driven to reverse, so as to drive the baffle 22 to slide along the length direction of the through opening 12 toward the mounting groove 11, so that the baffle 22 is rolled up on the rotating member 21 until the baffle 22 is completely located in the mounting groove 11, and the rotation of the rotating member 21 is stopped. At this time, the baffle 22 is completely located on one side of the through opening 12, and the through opening 12 is not blocked, so that the air inlet 31 is opened, and air can enter the external machine body 3 from the outside through the through opening 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 the outside air from entering the outer body 3 through the air inlet 31, thereby blocking 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 is defrosted and can be detected when the heat exchanger starts to defrost. 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, so as to judge 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, and 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 assist, so that the running time of each self-cleaning stage is reduced, and the expected demand can be met 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, and corresponding actions can be performed according to different levels and effects, so as to improve the self-cleaning effect with higher accuracy.

[0055] More specifically, a plurality of infrared sensors 23 are provided, and the plurality of 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 acquire the state and dirtiness of the heat exchanger and improve the detection accuracy.

[0056] In a specific embodiment, refer to Figure 3 As shown, the auxiliary component 2 further includes a heating element 24 , and the heating element 24 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 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 through port 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, and the heating wire 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 Figure 1 to Figure 2As shown, the frame 1 is also provided with a slide rail 13, and the slide rail 13 is extended 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 with the baffle 22. Specifically, the frame 1 is also provided with a slide rail 13, and the slide rail 13 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 inwardly, 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 with 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 can slide 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 detaching 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, and 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 against 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 Figure 1 to Figure 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 rolled 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 is extended along the height direction of the installation 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 rolled 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 simple assembly.

[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, refer to Figure 2As shown, the external machine body 3 includes two air inlets 31, the two air inlets 31 are a first air inlet and a second air inlet, the first air inlet and the second air inlet are adjacently arranged on both sides of the external machine body 3, the frame 1 includes a first opening and a second opening, the first opening and the second opening are respectively arranged opposite to the first air inlet and the second air inlet, the self-cleaning auxiliary device includes two auxiliary components 2, the two auxiliary components 2 are respectively adjacent to the first opening and the second opening and fixed on the frame 1, the two baffles 22 respectively block or open the first opening and the second opening, thereby respectively 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 of a self-cleaning auxiliary device. Fig.11 and Fig.12 is a schematic flow chart of the steps of the control method of the self-cleaning auxiliary device, Figure 7 Flow chart of the control method of the self-cleaning auxiliary device, the steps of the control method of the self-cleaning auxiliary device include S110-S130:

[0067] S110, 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, wherein the cleaning stage includes a frosting stage and a defrosting stage;

[0068] Specifically, the self-cleaning technology of the heat exchanger mainly includes condensation, frosting, defrosting, drainage and drying stages to achieve automatic cleaning of the heat exchanger surface. Specifically, it is to first condense water droplets on the heat exchanger surface, then turn the water droplets into frost, and use the expansion force of the frost to separate the dust particles from the fins. Then, the frost is quickly melted by heating, and the dust particles are discharged together 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 of 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 cover 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, preventing 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. 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 cycle of the defrosting stage, 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, the defrosting stage is ended and the heating element 24 is turned off.

[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 in 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 surface of the heat exchanger to continue to frost until the thickness of the frost layer 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 frosting. 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 controller will automatically detect the 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 the heating and the heating element 24 are continued to be turned on to allow the surface of the heat exchanger 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 adjusts the self-cleaning process of the heat exchanger in combination with control logic analysis and judgment, thereby assisting in accelerating the frosting and defrosting process of the heat exchanger.

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

[0084] S1141, obtaining cleaning data of the heat exchanger, and determining whether the cleaning data reaches a preset cleaning value;

[0085] S1142: If reached, the baffle 22 is controlled to open the opening 12 and the self-cleaning mode is exited at the same time.

[0086] Specifically, when the heat exchanger ends 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 cleaning state of the heat exchanger when the product is produced. Considering the heat exchanger wear problem 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 dirtiness 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 mounting 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 dirtiness 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 a self-cleaning process, it detects the cleaning effect of the heat exchanger. If the expected requirement is 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 Fig.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, obtaining dirtiness data of the heat exchanger, and obtaining a preset interval corresponding to the dirtiness data;

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

[0092] Specifically, the detection instruction is information transmitted 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 cover the opening 12 to close the air inlet 31. At this time, the infrared sensor 23 on the baffle 22 faces the heat exchanger, and detects the dirtiness of the heat exchanger, detects the dirtiness of the heat exchanger, obtains the dirtiness data of the heat exchanger, and feeds back the dirtiness data 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 being a range interval of the dirt data pre-set on the controller, and 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, and the dirt level is pre-set in the controller, and the dirt level in this embodiment includes heavy dirt, severe dirt and light dirt; the controller feeds back the dirt level to the terminal, and the user can choose whether to perform the self-cleaning function of the air conditioner according to needs after receiving the dirt level.

[0093] In this embodiment, when the user wants to know the dirtiness and blockage condition of the heat exchanger of the outdoor unit and determine whether self-cleaning is required, the baffle 22 can be started by remote control, and the infrared sensor 23 can be used to detect dust and other impurities on the heat exchanger of the outdoor unit, 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 to detect 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, unlike the previous self-cleaning function logic and rigid parameter control, the next step can only be entered when the expected parameters are met, 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 is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A self-cleaning auxiliary device, characterized in that: include: A frame, the frame is fixedly connected to the outer machine body, the frame is provided with a mounting groove and a through opening, the mounting groove is adjacent to and connected to the through opening, and the through opening is arranged corresponding to the air inlet of the outer machine body; An auxiliary component is located in the installation groove, the auxiliary component comprises a rotating member and a baffle, the rotating member is rotatably connected to the frame, and the baffle is rolled 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.

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

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

4. The self-cleaning auxiliary device according to claim 1, characterized in that: 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.

5. The self-cleaning auxiliary device according to claim 4, characterized in that: 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.

6. The self-cleaning auxiliary device according to any one of claims 1 to 5, characterized in that: The rotating member comprises a motor and a rotating shaft, wherein 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.

7. 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 6, the method comprising: Acquire the real-time temperature of the heat exchanger, and determine the cleaning stage of the heat exchanger according to the real-time temperature and the 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 cover the opening; If the heat exchanger is in the defrosting stage, the heating element is turned on.

8. The method according to claim 7, 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 the 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, while 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 turned off.

9. The method according to claim 8, characterized in that After the step of ending the defrosting stage and turning off the heating element, the method further comprises: 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.

10. The method according to claim 7, characterized in that The method further comprises: Receive detection instructions and control the baffle to block the opening; Obtaining dirtiness data of the heat exchanger, and obtaining a preset interval corresponding to the dirtiness data; The corresponding dirt level is acquired according to the preset interval, and the dirt level is fed back to the terminal.

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