Control method of air conditioning equipment and air conditioning equipment

Abstract

The invention relates to the technical field of air conditioning equipment, particularly provides a control method of air conditioning equipment and the air conditioning equipment, and aims to solve the technical problem that a filtering device of the existing air conditioning equipment cannot be cleaned in time, so that the filtering effect of the filtering device is influenced. Therefore, the air conditioning equipment comprises a filtering device, the filtering device is installed on an air conditioning pipeline and can filter and collect metal chippings in the air conditioning pipeline, and the control method of the air conditioning equipment comprises the steps that the accumulation amount of the metal chippings in the filtering device is obtained; and according to the accumulation amount, a prompt signal is selectively sent out so as to remind a user to clean the metal chippings. By means of the arrangement, the accumulation degree of the metal chippings in the filtering device can be mastered in real time, a prompt signal can be sent out when the metal chippings are seriously accumulated, a user is reminded to clean the metal chippings in time, and the situation that the filtering effect of the filtering device is affected by accumulation of a large number of metal chippings, and then normal operation of air conditioner equipment is affected is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of air-conditioning equipment, and in particular provides a control method for air-conditioning equipment and air-conditioning equipment. Background Art

[0002] When the air-conditioning equipment is running, the refrigerant circulates in the piping system composed of copper or aluminum tubes, enters and exits the compressor after passing through the throttling device. After running for a period of time, the copper chips, aluminum chips and other metal debris remaining in the pipeline will flow in the circulation pipeline along with the refrigerant. When there are too many metal debris, it will block the throttling device or the compressor, affecting the circulation of the refrigerant and the normal operation of the air-conditioning equipment, and even causing damage to the compressor or the scrapping of the air-conditioning equipment.

[0003] In order to solve this problem, some air-conditioning equipment is equipped with a filtering device that can filter and collect metal debris in the air-conditioning system to prevent the metal debris from flowing with the refrigerant and causing blockage in the circulation pipeline.

[0004] However, as the equipment continues to operate, metal debris will accumulate more and more in the filter device, and regular cleaning is required to ensure the filtering effect of the filter device. However, since the filter device is located inside the air-conditioning equipment, the accumulation of metal debris in the filter device cannot be directly observed, making it impossible for the user to accurately control the cleaning cycle, resulting in untimely cleaning of metal debris and affecting the filtering effect of the filter device or the normal operation of the air-conditioning equipment.

[0005] Therefore, this field needs a new technical solution to solve the above problems. Summary of the Invention

[0006] The present invention aims to solve the above technical problem, namely, the technical problem that the filtering device of the existing air-conditioning equipment cannot be cleaned in time, thereby affecting the filtering effect of the filtering device.

[0007] In a first aspect, the present invention provides a control method for air-conditioning equipment, wherein the air-conditioning equipment includes a filtering device, which is installed on an air-conditioning duct and can filter and collect metal debris in the air-conditioning duct. The control method includes: obtaining the accumulation amount of metal debris in the filtering device; and selectively issuing a prompt signal based on the accumulation amount to remind the user to clean the metal debris.

[0008] In the preferred technical solution of the above-mentioned control method, the specific steps of "selectively issuing a prompt signal based on the accumulation amount to remind the user to clean up the metal debris" include: comparing the accumulation amount with the preset accumulation amount; and selectively issuing a prompt signal based on the comparison result to remind the user to clean up the metal debris.

[0009] In the preferred technical solution of the above-mentioned control method, the specific step of "selectively issuing a prompt signal based on the comparison result to remind the user to clean up the metal debris" includes: if the accumulation amount is greater than the preset accumulation amount, issuing a prompt signal; if the accumulation amount is not greater than the preset accumulation amount, not issuing a prompt signal.

[0010] In a preferred technical solution of the above control method, in the case where "the accumulated amount is greater than the preset accumulated amount", the control method further includes: controlling the air-conditioning compressor to reduce the operating frequency.

[0011] In a preferred technical solution of the above control method, the prompt signal includes at least one of a sound signal, a light signal, a voice message and a text message.

[0012] In a second aspect, the present invention provides an air conditioning device, comprising a controller configured to execute the above control method.

[0013] In the preferred technical solution of the above-mentioned air-conditioning equipment, the filtering device includes: a filter pipe, a collecting tank, a positive magnetic block, a negative magnetic block and a detection device, the two ends of the filter pipe are respectively connected to the air-conditioning pipeline to allow the refrigerant to pass through; the collecting tank is distributed circumferentially on the inner wall of the filter pipe to collect metal debris; the positive magnetic block and the negative magnetic block are fixed on opposite sides of the filter pipe in the vertical direction, and can apply Lorentz force to the metal debris passing through the filter pipe, so that the metal debris enters the collecting tank to prevent the metal debris from passing through the filter pipe; the detection device can detect the accumulation of metal debris in the collecting tank.

[0014] In a preferred technical solution of the above-mentioned air-conditioning equipment, the filtering device further includes a baffle, which is located at the bottom of the filtering pipe and can cover the lower half of the notch of the collecting tank.

[0015] In the preferred technical solution of the above-mentioned air-conditioning equipment, the filtering device further includes a one-way filter screen, and the one-way filter screen circumferentially covers the notch of the collection tank.

[0016] In a preferred technical solution of the above-mentioned air-conditioning equipment, the detection device is configured as a pressure sensor, which is installed at the bottom of the collection tank and can detect the pressure generated by the metal debris.

[0017] When the above technical solution is adopted, the air conditioning equipment of the present invention includes a filter device, which is installed on the air conditioning pipeline and can filter and collect metal debris in the air conditioning pipeline. The control method of the present invention includes: obtaining the accumulation of metal debris in the filter device; and selectively issuing a prompt signal based on the accumulation to remind the user to clean the metal debris. Through such a setting, on the one hand, copper chips, aluminum chips and other metal debris in the pipeline can be filtered and collected to prevent them from flowing with the refrigerant in the pipeline and causing pipeline blockage; on the other hand, the accumulation of metal debris deposited in the filter device can be monitored in real time so that when the metal debris accumulates too much, a prompt message can be issued in time to remind the user to clean the filter device, prevent excessive metal debris from affecting the filtering effect, and ensure the smooth flow of the circulation pipeline and the normal operation of the air conditioning equipment.

[0018] Furthermore, the control method of the present invention further includes comparing the accumulated amount with a preset accumulated amount; and selectively issuing a prompt signal based on the comparison result to remind the user to clean up the metal debris. By setting the preset accumulated amount as the critical amount that affects the filtration effect of the filter device, the detected accumulated amount can be compared with the preset accumulated amount to accurately assess the accumulation of metal debris, providing an accurate basis for issuing the prompt signal.

[0019] Furthermore, the control method of the present invention further includes: issuing a warning signal if the accumulated amount is greater than a preset amount; and not issuing a warning signal if the accumulated amount is not greater than the preset amount. This configuration allows for prompting a warning signal to be issued promptly after the actual accumulated amount of metal debris exceeds a critical amount, prompting the user to promptly clean the metal debris to avoid affecting the filtering effect of the filter device. If the actual accumulated amount of metal debris does not exceed the critical amount, no warning signal is issued, ensuring continuous operation of the air conditioner. This allows for precise control of the cleaning cycle, allowing the user to maintain normal operation of the air conditioner with minimal cleaning cycles.

[0020] Furthermore, in the event that the accumulation level exceeds a predetermined level, the control method of the present invention further includes controlling the air conditioner compressor to reduce its operating frequency. This configuration allows the compressor's operating frequency to be reduced immediately after the actual accumulation level of metal debris exceeds a critical level, thereby reducing the refrigerant flow rate within the circulation pipeline and, consequently, minimizing the flow and accumulation of metal debris.

[0021] Furthermore, the prompt signal of the present invention includes at least one of a sound signal, a light signal, a voice message and a text message. Through such an arrangement, the form of the prompt signal is more diversified to meet different usage scenarios and usage habits.

[0022] In addition, the air-conditioning equipment further provided by the present invention on the basis of the above-mentioned technical solution adopts the above-mentioned control method, and thus has the technical effects of the above-mentioned control method. Compared with the air-conditioning equipment before the improvement, the air-conditioning equipment of the present invention can monitor the accumulation of metal debris in the filter device in real time, and send a prompt signal when the accumulation amount is too large to remind the user to clean it in time to avoid affecting the filtering effect of the filter device, thereby ensuring the smooth flow of the circulation pipeline and the normal operation of the air-conditioning equipment.

[0023] Furthermore, the filtering device of the present invention includes: a filter pipe, a collection tank, a positive magnetic block, a negative magnetic block, and a detection device. The two ends of the filter pipe are respectively connected to the air conditioning pipe to allow the refrigerant to pass through; the collection tank is distributed circumferentially on the inner wall of the filter pipe to collect metal debris; the positive magnetic block and the negative magnetic block are fixed in the vertical direction on opposite sides of the filter pipe, and can exert a Lorentz force on the metal debris passing through the filter pipe, causing the metal debris to enter the collection tank, thereby preventing the metal debris from passing through the filter pipe; and the detection device can detect the amount of metal debris accumulated in the collection tank. Through this arrangement, on the one hand, the Lorentz force can be exerted on the metal debris passing through the filter pipe, causing the metal debris to deflect to the sides and eventually settle in the collection tank, preventing the metal debris from passing through the filter pipe and continuing to flow in the circulation pipe, thereby achieving the purpose of filtering and collecting the metal debris; on the other hand, the amount of metal debris accumulated in the collection tank can be detected in real time, providing an accurate basis for issuing a prompt signal.

[0024] Furthermore, the filter device of the present invention includes a baffle located at the bottom of the filter pipe, which covers the lower half of the collection tank. This arrangement blocks metal debris deposited at the bottom of the collection tank, preventing it from being washed away again by the flowing refrigerant and affecting the filtration effect.

[0025] Furthermore, the filtration device of the present invention includes a one-way filter that circumferentially covers the notch of the collection tank. This arrangement completely covers the collection tank, preventing metal debris from entering the collection tank and preventing it from exiting. This prevents metal debris that enters the collection tank from being flushed away by the refrigerant, further improving the filtration effect.

[0026] Furthermore, the detection device of the present invention is configured as a pressure sensor, which is installed at the bottom of the collection tank and can detect the pressure generated by the metal debris. This configuration makes the detection device simple in structure and low in cost, while effectively ensuring the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0028] Figure 1 It is a schematic diagram of the assembly of the filter device and the air conditioning pipeline of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of the filter device of the present invention. Figure 1 ;

[0030] Figure 3 This is a schematic diagram of the structure of the filter device of the present invention. Figure 2 ;

[0031] Figure 4 This is a schematic diagram of the structure of the filter device of the present invention. Figure 3 ;

[0032] Figure 5 yes Figure 4 A local enlarged view of the AA point in the middle;

[0033] Figure 6 is a flow chart of a method for controlling an air-conditioning device according to the present invention;

[0034] Figure 7 It is a flow chart of an embodiment of a method for controlling an air-conditioning device according to the present invention.

[0035] List of reference numerals:

[0036] 11. Filter pipe; 12. Collection tank; 131. Positive magnetic block; 132. Negative magnetic block; 14. Detection device; 151. Baffle; 152. One-way filter; 2. Air conditioning pipeline. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0038] It should be noted that, in the description of the present invention, terms such as "inside", "outside", "up", "down", "top", and "bottom" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0039] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "connected," and "installed" should be understood in a broad sense, and may refer to, for example, a fixed connection, a detachable connection, or an integral connection. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0040] Based on the technical problem pointed out in the background art that the filter device of the existing air-conditioning equipment cannot be cleaned in time, which affects the filtering effect of the filter device. To this end, the present invention provides a control method for air-conditioning equipment and air-conditioning equipment, which aims to obtain the accumulation of metal debris in the filter device in real time; and selectively issue a prompt signal based on the accumulation amount to remind the user to clean the metal debris. Through such a setting, the accumulation level of metal debris in the filter device can be monitored in real time, and a prompt signal can be issued when the accumulation of metal debris is serious to remind the user to clean it in time, so as to avoid the accumulation of large amounts of metal debris that affects the filtering effect and further affects the normal operation of the air-conditioning equipment.

[0041] Specifically, if Figures 1 to 6 As shown, the air conditioning device of the present invention includes a filtering device, which is installed on the air conditioning pipeline 2 and can filter and collect metal debris in the air conditioning pipeline 2. The control method of the present invention includes:

[0042] S100: Obtaining the amount of metal debris accumulated in the filter device;

[0043] S200: selectively issuing a prompt signal according to the accumulated amount to remind the user to clean up the metal debris.

[0044] Since the circulation pipeline of the air-conditioning equipment is composed of metal pipes such as copper pipes or aluminum pipes, as the air-conditioning equipment continues to operate, a large amount of metal debris such as copper chips or aluminum chips will be generated on the inner wall of the circulation pipeline. In order to solve this problem, a filtering device is installed on the air-conditioning pipeline 2 of the present invention, which can effectively filter out the metal debris flowing with the refrigerant in the pipeline, and collect the filtered metal debris in the filtering device.

[0045] Exemplarily, the filtering device includes a filter pipe 11 and a magnetic field generating device. The filter pipe 11 is connected to the circulation pipeline of the air-conditioning equipment. The refrigerant can pass through the filter pipe 11 during the circulation process. The magnetic field generating device is arranged on opposite sides of the filter pipe 11, thereby generating a magnetic field perpendicular to the extension direction of the filter pipe 11 in the internal space of the filter pipe 11. A collection tank 12 is also provided on the inner wall of the filter pipe 11. When metal debris flows through the filter pipe 11 together with the refrigerant, the moving metal debris will be affected by the Lorentz force generated by the magnetic field, causing its moving path to deviate and hit the inner wall, and finally slide into the collection tank 12, thereby realizing the filtering and collection of metal debris.

[0046] It should be noted that, in practical applications, those skilled in the art can flexibly set the structure and type of the magnetic field generating device. For example, it can be two permanent magnets arranged opposite to each other, or it can be two electromagnets arranged opposite to each other, as long as it can generate a magnetic field in the filter pipe 11.

[0047] However, as the metal debris accumulates more and more, it will exceed the storage capacity of the collection tank 12, causing the metal debris to be washed away by the refrigerant again. This requires the user to clean the collection tank 12 regularly. However, since the collection tank 12 is located inside the pipeline, the user cannot directly grasp the accumulation of metal debris in the collection tank 12 from the outside and can only make judgments based on experience. The accuracy of the cleaning cycle is difficult to guarantee, resulting in untimely cleaning or too frequent cleaning.

[0048] Based on the above reasons, the filter device of the present invention is further provided with a detection device 14, which can detect the accumulation of metal debris in real time and send a prompt signal to the user.

[0049] This arrangement, on the one hand, can filter and collect metal debris such as copper chips and aluminum chips in the pipeline to prevent them from flowing with the refrigerant in the pipeline and causing blockage of the pipeline; on the other hand, it can monitor the accumulation of metal debris deposited in the filter device in real time, so that when too much metal debris accumulates, a prompt message can be issued to remind the user to clean the filter device in time to prevent excessive metal debris from affecting the filtering effect, thereby ensuring the smooth flow of the circulation pipeline and the normal operation of the air-conditioning equipment.

[0050] Preferably, if Figure 4 、 Figure 5 and Figure 7 As shown in FIG, the specific steps of “selectively issuing a prompt signal based on the accumulation amount to remind the user to clean up the metal debris” include:

[0051] S210: Compare the accumulated amount with a preset accumulated amount;

[0052] S220: Based on the comparison result, selectively sending a prompt signal to remind the user to clean the metal debris.

[0053] For example, to detect the amount of metal debris accumulation, a pressure sensor can be installed at the bottom of the collection tank 12 to obtain the accumulation amount by detecting the pressure generated by the metal debris. Alternatively, a camera or infrared sensor can be installed in the collection tank 12 to obtain the accumulation amount of metal debris by detecting the stacking height or volume of the metal debris.

[0054] In this case, a pressure sensor is preferably used to obtain the pressure generated by metal debris, so that the preset accumulation amount is the preset pressure. In practical applications, the value of the preset pressure can be determined through experiments. In this solution, the initial pressure F0 is obtained and recorded when the air conditioner is first run, and the preset pressure Fn is set to 1.05 times the initial pressure F0, that is, Fn = 1.05F0. Under normal circumstances, F0 = 1g, Fn = 1.05g.

[0055] The preset accumulation amount is set as the critical accumulation amount that may affect the filtering effect of the filtering device. By comparing the detected accumulation amount with the preset accumulation amount, an accurate assessment of the accumulation of metal debris can be made, providing an accurate basis for the issuance of the prompt signal.

[0056] Preferably, if Figure 7 As shown in FIG, the specific steps of “selectively issuing a prompt signal based on the comparison result to remind the user to clean up the metal debris” include:

[0057] S221: If the accumulated amount is greater than the preset accumulated amount, a prompt signal is issued;

[0058] S222: If the accumulated amount is not greater than the preset accumulated amount, no prompt signal is issued.

[0059] When the detected accumulation amount is greater than the preset accumulation amount, it means that the accumulation amount of metal debris has exceeded the holding capacity of the collection tank 12, causing the metal debris to be washed away by the refrigerant and continue to flow in the pipeline, which greatly reduces the filtering efficiency of the filter device. The collection tank 12 needs to be cleaned in time to restore the filtering and collection capacity of the filter device. At this time, the controller will control the playback device to send a prompt signal.

[0060] When the detected accumulation amount is not greater than the preset accumulation amount, it means that the accumulation amount of metal debris has not reached the upper limit of the collection tank 12, and will not temporarily affect the filtering effect of the filtering device. There is no need to clean the holding tank, and the air-conditioning equipment can maintain continuous operation.

[0061] Through such a setting, a prompt signal can be issued in time after the actual accumulation of metal debris exceeds the critical accumulation amount to remind the user to clean it up and avoid affecting the filtering effect of the filter device. When the actual accumulation of metal debris does not exceed the critical accumulation amount, no prompt signal will be issued to ensure the continuous operation of the air-conditioning equipment, thereby achieving precise control of the cleaning cycle, which can not only avoid cleaning too frequently and affecting the normal operation of the air-conditioning equipment, but also avoid failure of the filter device and resulting in pipe blockage, so that users can ensure the normal operation of the air-conditioning equipment with the least number of cleanings.

[0062] Preferably, if Figure 7 As shown, in the case where "the accumulated amount is greater than the preset accumulated amount", the control method of the present invention further includes:

[0063] S300: Control the air-conditioning compressor to reduce the operating frequency.

[0064] Illustratively, when the actual accumulation of metal debris exceeds the critical accumulation amount, the control method of the present invention not only sends a prompt signal to the customer, but also reduces the operating frequency of the compressor during the operation of the air-conditioning equipment to reduce the flow rate of the refrigerant in the circulation pipeline, thereby reducing the flow and accumulation of metal debris.

[0065] Preferably, the prompt signal of the present invention includes at least one of a sound signal, a light signal, a voice message and a text message.

[0066] For example, prompt signals are sent to users in various forms through indicator lights, speakers, display screens, and communication equipment on the air-conditioning equipment, making the forms of prompt signals more diverse and meeting different usage scenarios and usage habits.

[0067] In addition, the air-conditioning equipment further provided by the present invention on the basis of the above-mentioned technical solution adopts the above-mentioned control method, and thus has the technical effects of the above-mentioned control method. Compared with the air-conditioning equipment before the improvement, the air-conditioning equipment of the present invention can monitor the accumulation of metal debris in the filter device in real time, and send a prompt signal when the accumulation amount is too large to remind the user to clean it in time to avoid affecting the filtering effect of the filter device, thereby ensuring the smooth flow of the circulation pipeline and the normal operation of the air-conditioning equipment.

[0068] Preferably, if Figure 1 、 Figures 4 to 6 As shown, the filtering device of the present invention includes: a filtering pipe 11, a collecting tank 12, a positive magnetic block 131, a negative magnetic block 132 and a detection device 14. The two ends of the filtering pipe 11 are respectively connected to the air-conditioning pipe 2 to allow the refrigerant to pass through; the collecting tank 12 is distributed circumferentially on the inner wall of the filtering pipe 11 to collect metal debris; the positive magnetic block 131 and the negative magnetic block 132 are fixed on opposite sides of the filtering pipe 11 in the vertical direction, and can apply Lorentz force to the metal debris passing through the filtering pipe 11, so that the metal debris enters the collecting tank 12 to prevent the metal debris from passing through the filtering pipe 11; the detection device 14 can detect the accumulation of metal debris in the collecting tank 12.

[0069] Exemplarily, the positive pole magnetic block 131 and the negative pole magnetic block 132 can be set as permanent magnets or as electromagnets, thereby realizing the control of the magnetic field and the strength of the Lorentz force. Through such a setting, on the one hand, the Lorentz force can be applied to the metal debris passing through the filter pipe 11, causing the metal debris to deviate to both sides and eventually deposit in the collection tank 12, thereby preventing the metal debris from passing through the filter pipe 11 and flowing in the circulation pipeline, thereby achieving the purpose of filtration; on the other hand, the accumulation of metal debris in the collection tank 12 can be detected in real time, providing an accurate basis for the issuance of the prompt signal.

[0070] like Figure 2As shown, in the first preferred embodiment of the present invention, the filter device further includes a baffle 151 . The baffle 151 is located at the bottom of the filter pipe 11 and can cover the lower half of the notch of the collection tank 12 .

[0071] Exemplarily, the baffle 151 is configured as a semi-annular structure, covering the notch in the lower half. As the metal debris is horizontally offset to both sides under the action of the Lorentz force, it can directly enter the collection tank 12 and then slide to the bottom of the collection tank 12 under the action of gravity. Under the isolation effect of the baffle 151, the refrigerant cannot wash away the metal debris at the bottom of the collection tank 12 when flowing through the filter pipe 11, thereby ensuring the filtering effect of the filtering device.

[0072] like Figure 3 As shown, in the second preferred embodiment of the present invention, the filtering device further includes a one-way filter 152 , and the one-way filter 152 covers the notch of the collecting tank 12 along the circumferential direction.

[0073] The one-way filter 152 is configured as an annular structure, which can completely close the collection tank 12 along the circumference, and the one-way filter 152 structure allows metal debris to only enter the collection tank 12 but not come out of the collection tank 12, thereby preventing the metal debris entering the collection tank 12 from being carried away again by the refrigerant, further improving the filtering effect.

[0074] Preferably, if Figure 4 and Figure 5 As shown, the detection device 14 of the present invention is configured as a pressure sensor, which is installed at the bottom of the collection tank 12 and can detect the pressure generated by the metal debris.

[0075] For example, multiple pressure sensors are evenly arranged at the bottom of the collection tank 12. As the metal debris continues to accumulate, the pressure signal sensed by the pressure sensor will become stronger and stronger, which not only makes the structure of the detection device 14 simple and low-cost, but also effectively ensures the accuracy of the detection results.

[0076] It should be noted that, in actual applications, those skilled in the art can also flexibly set the detection device 14 to an infrared sensor, a high-definition camera, etc., as long as it can accurately and timely detect the accumulation of metal debris. Such flexible adjustments and changes do not deviate from the principles and scope of the present invention and should be limited to the protection scope of the present invention.

[0077] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A method for controlling an air-conditioning device, characterized in that: The air conditioning equipment includes a filter device, which is installed on the air conditioning pipeline and can filter and collect metal debris in the air conditioning pipeline. The control method includes: Obtaining the amount of metal debris accumulated in the filtering device; According to the accumulated amount, a prompt signal is selectively issued to remind the user to clean up the metal debris.

2. The control method according to claim 1, characterized in that: The specific steps of "selectively issuing a prompt signal based on the accumulated amount to remind the user to clean up the metal debris" include: comparing the accumulated amount with a preset accumulated amount; According to the comparison result, a prompt signal is selectively issued to remind the user to clean the metal debris.

3. The control method according to claim 2, characterized in that: The specific steps of "selectively issuing a prompt signal based on the comparison result to remind the user to clean up the metal debris" include: If the accumulated amount is greater than the preset accumulated amount, a prompt signal is issued; If the accumulated amount is not greater than the preset accumulated amount, no prompt signal is issued.

4. The control method according to claim 3, characterized in that: In the case where "the accumulated amount is greater than the preset accumulated amount", the control method further includes: Control the air conditioning compressor to reduce the operating frequency.

5. The control method according to any one of claims 1 to 4, characterized in that: The prompt signal includes at least one of a sound signal, a light signal, a voice message and a text message.

6. An air conditioning device, characterized in that: The air conditioning apparatus includes a controller configured to execute the control method according to any one of claims 1 to 5 .

7. The air conditioning device according to claim 6, characterized in that The filtering device includes: a filtering pipe, a collecting tank, a positive magnetic block, a negative magnetic block and a detection device. Both ends of the filter pipe are connected to the air conditioning pipeline to allow the refrigerant to pass through; The collecting grooves are distributed circumferentially on the inner wall of the filter pipe to collect metal debris; The positive magnetic block and the negative magnetic block are fixed on opposite sides of the filter pipe in the vertical direction, and can exert a Lorentz force on metal debris passing through the filter pipe, so that the metal debris enters the collection tank, thereby preventing the metal debris from passing through the filter pipe; The detection device is capable of detecting the accumulation amount of metal scraps in the collection tank.

8. The air conditioning device according to claim 7, characterized in that: The filtering device further comprises a baffle, which is located at the bottom of the filtering pipe and can cover the lower half of the notch of the collecting tank.

9. The air conditioning device according to claim 7, characterized in that: The filtering device further comprises a one-way filter screen, which covers the notch of the collecting tank along the circumferential direction.

10. The air conditioning device according to claim 7, characterized in that The detection device is configured as a pressure sensor, which is installed at the bottom of the collecting tank and can detect the pressure generated by metal debris.

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