Filtering device and air conditioner condenser

Abstract

The invention relates to the technical field of filtering, particularly provides a filtering device and an air conditioner condenser, and aims to solve the problems that in the prior art, when a filter with a filter screen is additionally arranged in front of a throttling device of the air conditioner condenser, the filter screen is blocked by copper scraps and / or aluminum scraps, and then the flow of a refrigerant in a pipeline is obviously reduced; the refrigeration effect of the air conditioner is obviously reduced; or the pipeline is blocked, so that the pipeline is broken. In order to achieve the purpose, the filtering device installed in the refrigerant circulating pipeline of the air conditioner condenser is provided, the filtering device is a magnetic filtering device, so that when a refrigerant flows through the filtering device, metal impurities in the refrigerant can be collected into the filtering device under the action of a magnetic field of the filtering device; in this way, a filter screen used for intercepting fluid does not need to be arranged in the filter device to filter the metal impurities, and therefore the situation that the refrigerant flow is affected when the filter device filters the metal impurities is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of filtration, and particularly relates to a filtration device and an air-conditioning condenser. Background Art

[0002] When the refrigerant of an air conditioner is in a pipeline system composed of copper pipes or aluminum pipes, it passes through a throttling device in and out of the compressor system. After being used for a period of time, metal impurities such as copper chips and / or aluminum chips remaining in the pipeline will flow in the pipeline along with the refrigerant. When there are too many copper chips, they will block the throttling device or the compressor, thereby affecting the refrigerant flow in the entire system. In the light case, it affects the operation of the air conditioner, and in the severe case, it damages the compressor and causes the entire air-conditioning system to be damaged.

[0003] To solve the above problems, usually a filter with a filter screen is added in front of the throttling device. However, after long-term use, copper chips and / or aluminum chips will block the filter screen, resulting in a significant reduction in the refrigerant flow rate in the pipeline, a significant decline in the air-conditioning refrigeration effect, and even a situation where the pipeline is blocked and the refrigerant bursts the pipeline.

[0004] Correspondingly, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] To solve the above problems in the prior art, that is, to solve the problem that when a filter with a filter screen is added in front of the throttling device of an air-conditioning condenser in the prior art, copper chips and / or aluminum chips block the filter screen, resulting in a significant reduction in the refrigerant flow rate in the pipeline, a significant decline in the air-conditioning refrigeration effect, and even a situation where the pipeline is blocked and the refrigerant bursts the pipeline.

[0006] In a first aspect, the present invention provides a filtration device for filtering metal impurities in a fluid flowing into its own pipeline, and is configured to filter the metal impurities by a filtration structure that does not use a filter screen for intercepting the fluid in the pipeline.

[0007] In a preferred technical solution of the above filtration device, the filtration device includes:

[0008] A magnetic filtration device configured such that when the fluid flows inside the pipeline, the metal impurities can be collected on the inner wall of the pipeline under the action of the magnetic field of the magnetic filtration device.

[0009] In a preferred technical solution of the above filtration device, the magnetic filtration device includes:

[0010] A housing having a through hole inside, and the through hole serves as the pipeline;

[0011] A magnetic unit, which is installed on the housing and configured to provide a magnetic field for the housing, and the direction of the magnetic field is set along a direction perpendicular to the axis of the pipeline; and

[0012] A filtering structure, which is connected to the housing and configured to be able to collect the metal impurities entering its interior, and is also configured to be able to discharge the metal impurities to the outside of the housing.

[0013] In a preferred technical solution of the above filtering device, the filtering structure includes:

[0014] A collection tank, which is in internal communication with the pipeline;

[0015] A one-way filter, which covers the inlet of the collection tank.

[0016] In a preferred technical solution of the above filtering device, the collection tank includes:

[0017] A cleaning port, which is provided at the bottom of the collection tank and is configured to be in communication or not in communication with the outside of the housing.

[0018] In a preferred technical solution of the above filtering device, the collection tank is slidably connected to the housing and is configured such that when the collection tank slides to a first position, the collection tank is in internal communication with the pipeline, and is also configured such that when the collection tank slides to a second position, the collection tank is fluid-isolated from the interior of the housing and forms a sealed cavity with the housing.

[0019] In a preferred technical solution of the above filtering device, the magnetic unit is an electromagnet installed on the housing, and the positive pole and the negative pole of the electromagnet are arranged on both sides of the housing in a facing manner.

[0020] In a preferred technical solution of the above filtering device, the filtering device further includes a camera module, and the camera module is arranged upstream of the magnetic filtering device and is used to detect the size of the metal impurities, so that the filtering device can control the magnetic field intensity of the electromagnet according to the size of the metal impurities.

[0021] In a preferred technical solution of the above filtering device, the filtering device further includes:

[0022] A flow meter, which is arranged on the inner wall of the housing and is used to measure the fluid flow rate, so that the filtering device can adjust the magnetic field intensity of the electromagnet according to the flow rate and / or the size of the metal impurities, so that metal impurities with different flow rates and / or different sizes can enter the collection tank under the action of the magnetic field.

[0023] In a second aspect, the present invention further provides an air conditioner condenser, which includes a refrigerant circulation pipeline, and the above-mentioned filtering device is connected in the refrigerant circulation pipeline.

[0024] In the case of adopting the above technical solution, when the filtering device filters the fluid containing metal impurities, the filtering structure that does not use a filter screen to intercept the fluid is not used in the pipeline to filter the metal impurities. In this way, it is not necessary to set a filter screen for intercepting the fluid inside the filtering device to filter the metal impurities, so that the filtering device will not affect the refrigerant flow when filtering the metal impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The preferred embodiments of the present invention will be described below in conjunction with the air conditioner condenser and the accompanying drawings. In the drawings:

[0026] Figure 1 is a schematic cross-sectional structure diagram of the filtering structure of the filtering device according to an embodiment of the present invention along the transverse direction.

[0027] Figure 2 is a schematic diagram of the filtering structure of the filtering device according to an embodiment of the present invention when it is in the first position and is cut along the Figure 1 section line B-B.

[0028] Figure 3 is a schematic diagram of the filtering structure of the filtering device according to an embodiment of the present invention when it is in the second position and is cut along the Figure 1 section line B-B.

[0029] Figure 4 is Figure 3 a partial enlarged view of area A in

[0030] Figure 5 is a schematic diagram of the section cut along the Figure 1 section line C-C in

[0031] List of Reference Numerals:

[0032] 100. Filtering device; 1. Magnetic filtering device; 11. Housing; 111. Through hole; 112. Opening; 12. Magnetic unit; 13. Filtering structure; 131. Collection tank; 1311. Tank bottom 1311; 132. One-way filter; 133. Cleaning port; 14. Two-way valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios. For example, although the description is made in combination with an air conditioner condenser, it is obvious that it can also be applied to other pipelines such as water supply pipelines and natural gas pipelines that need to filter metal impurities in fluids.

[0034] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "inside", "above", "below", "horizontal", "inside", "outside", etc. are based on the directions or positional relationships shown in the drawings. This is only for 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, and therefore cannot be construed as a limitation of the present invention. In addition, the terms "first", "second" are only for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0035] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0036] Figure 1 It is a schematic cross-sectional structure diagram of the filtering structure of a filtering device according to an embodiment of the present invention along the transverse direction. Figure 2 It is a schematic diagram of the filtering structure of a filtering device according to an embodiment of the present invention when it is in the first position and is cut along the Figure 1 section line B-B. Figure 3 It is a schematic diagram of the filtering structure of a filtering device according to an embodiment of the present invention when it is in the second position and is cut along the Figure 1 section line B-B. Figure 4 It is Figure 3 a partial enlarged view of area A in Figure 5 It is a schematic diagram cut along the Figure 1 section line C-C in

[0037] As shown in Figure 1 , it can also be seen in Figure 2 and Figure 5, In order to solve the problem that in the existing technology, a filter containing a filter screen for intercepting refrigerant is added in front of the throttling device of the air conditioner condenser pipeline, and during long-term filtering operation, copper chips and / or aluminum chips accumulate on the filter screen, resulting in a reduction in refrigerant flow rate, affecting the refrigeration effect of the air conditioner, or damaging the air conditioner condenser pipeline and compressor. The present invention provides a filtering device 100 installed on the air conditioner condenser circulation pipeline (not shown). The filtering device 100 is installed in the refrigerant pipeline of the air conditioner condenser. The filtering device 100 is a magnetic filtering device 1, configured such that when the refrigerant flows through the filtering device 100, the copper chips and / or aluminum chips can perform a magnetic induction line cutting movement in the through hole 111, and further, the copper chips and / or aluminum chips can generate a Lorentz force that interacts with the magnetic field of the magnetic filtering device 1, so that the copper chips and / or aluminum chips can move in the direction close to the inner wall of the through hole 111 under the action of the Lorentz force, so that the copper chips and / or aluminum chips can enter the filtering device 100. In this way, it is not necessary to provide a filter screen for intercepting fluid inside the through hole 111 to filter the copper chips and / or aluminum chips, so that the filtering device 100 will not affect the refrigerant flow rate in the through hole 111 during metal impurity filtering, and thus ensure the stable flow of the refrigerant in the through hole 111.

[0038] It should be noted that although the above-described filtering device 100 filters non-magnetic metals such as copper chips and / or aluminum chips in the pipeline through the magnetic filtering device 1, this is not restrictive. Those skilled in the art can set the magnetic filtering device 100 to filter magnetic metals according to needs, that is, drive the magnetic metal through the magnetic field force of the magnetic filtering device 1, so that the magnetic metal can move in the direction of the inner wall of the pipeline under the action of the magnetic field force, so that the metal impurities can be collected in the filtering structure 13. Similarly, when the present invention is specifically implemented, the magnetic filtering device 1 can also filter magnetic metals and non-magnetic metals simultaneously. Without departing from the basic principle of the present application, those skilled in the art can flexibly select the setting form of the filtering device 100 according to the specific application scenario, as long as the filtering device 100 can filter metal impurities.

[0039] As a possible implementation manner, as Figure 1 shown, see also Figures 2 - 5, the magnetic filtration device 1 includes a housing 11, a magnetic unit 12, and a filtration structure 13. A through hole 111 extending in the axial direction is provided inside the housing 11 so that the through hole 111 can be communicated with the refrigerant circulation pipeline. The magnetic unit 12 is connected to the housing 11 and provides a magnetic field for the through hole 111 inside the housing 11, and the direction of the magnetic field is set perpendicular to the axis of the through hole 111. In this way, the magnetic force exerted by the magnetic field on the copper chips and / or aluminum chips can be perpendicular to the axis of the through hole 111, so that the copper chips and / or aluminum chips can quickly move towards the direction close to the inner wall of the through hole 111. The filtration structure 13 is connected to the inner wall of the housing 11, and the filtration structure 13 can collect the copper chips and / or aluminum chips entering its own interior, thereby filtering the metal impurities in the refrigerant.

[0040] It should be noted that although the direction of the magnetic field generated by the magnetic unit 12 described above in combination with Figure 1 and Figure 5 is perpendicular to the axis of the through hole 111, this is not restrictive. Those skilled in the art can also set the direction of the magnetic field generated by the magnetic unit 12 not to be perpendicular to the axis of the through hole 111 according to needs, as long as the direction of the magnetic field can have a certain angle with the axis of the through hole 111, so that the copper chips and / or aluminum chips can enter the filtration structure 13 under the action of the magnetic force.

[0041] As a possible implementation manner, as Figure 1 shown, see also Figures 2 - 5 , the filtration structure 13 includes a collection tank 131 and a one-way filter 132. The collection tank 131 is provided in the housing 11, and the notch of the collection tank 131 is communicated with the inside of the through hole 111, so that the copper chips and / or aluminum chips can enter the collection tank 131 under the action of the magnetic field. The one-way filter 132 is arranged at the inlet of the collection tank 131. In this way, when the copper chips and / or aluminum chips enter the collection tank 131, the one-way filter 132 can intercept the copper chips and / or aluminum chips in the collection tank 131, thereby filtering the copper chips and / or aluminum chips in the refrigerant and preventing the copper chips and / or aluminum chips from flowing back into the refrigerant. Moreover, as Figure 1 and Figure 2 shown, the one-way filter 132 is arranged along the axial direction of the through hole 111, that is, the one-way filter 132 of the present invention does not filter the copper chips and / or aluminum chips in the refrigerant in the installation manner of intercepting the refrigerant. In this way, when filtering the copper chips and / or aluminum chips through the one-way filter 132, even if the copper chips and / or aluminum chips block the one-way filter 132, it will not affect the flow rate of the refrigerant in the through hole 111.

[0042] It should be noted that the one-way filter 132 has the function of unidirectionally guiding copper chips and / or aluminum chips. That is, when the copper chips and / or aluminum chips move from the inside of the through-hole 111 towards the collecting groove 131, the copper chips and / or aluminum chips can smoothly enter the collecting groove 131 under the action of the one-way filter 132. However, when the copper chips and / or aluminum chips in the collecting groove 131 move from the collecting groove 131 towards the inside of the through-hole 111, the one-way filter 132 can prevent the copper chips and / or aluminum chips from flowing out of the inside of the collecting groove 131. Specifically, the one-way filter 132 can have a device simulating the structure of a heart valve, and its working principle is similar to that of a check valve in a water pipe. It can achieve the unidirectional flow of copper chips and / or aluminum chips under the drive of power, thereby realizing the one-way filtration of copper chips and / or aluminum chips. The specific structure of the one-way filter 132 will not be elaborated here as long as it can achieve the unidirectional movement of copper chips and / or aluminum chips from the inside of the through-hole 111 towards the collecting groove 131 under the drive of power.

[0043] It should be noted that, as Figure 1 shown, reference can also be made to Figure 2 and Figure 3 and Figure 5 . When the present invention is specifically implemented, the number of the collecting grooves 131 is two, and the two collecting grooves 131 are arranged on both sides of the housing symmetrically with respect to the axis of the housing 11, so that the refrigerant can enter the collecting groove 131 under the action of the magnetic field force both when flowing forward and backward in the through-hole 111. Specifically, when the present invention is specifically implemented, the axial directions of the two collecting grooves 131 are perpendicular to the magnetic induction lines of the magnetic field, that is, Figure 2 the Z direction in Figure 2 . It should be noted that Figure 2 the X direction in Figure 2 is along the axial direction of the copper hole 111,

[0044] the Y direction in is along the magnetic induction lines of the magnetic field, and Figure 2 the Z direction in

[0044] is perpendicular to the X direction and the Y direction. In this way, when the copper chips and / or aluminum chips flow inside the through-hole 111 and move perpendicular to the magnetic induction lines, an electromotive force and current will be generated inside the copper chips and / or aluminum chips, so that the copper chips and / or aluminum chips can be subjected to the Lorentz force perpendicular to the magnetic induction lines and then enter the collecting groove 131.

[0045] In addition, although a one-way filter 132 is provided at the notch of the collection groove 131 described above, so that when the copper chips and / or aluminum chips enter the collection groove 131, the copper chips and / or aluminum chips can be blocked in the collection groove 131 under the action of the one-way filter 132, this is not restrictive, and those skilled in the art can do so as needed.

[0046] As a possible implementation, as Figure 1 shown, see also Figures 2 - 5 , the collection groove 131 includes a cleaning port 133, which is provided at the bottom 1311 of the collection groove 131 and is configured to be connected or not connected to the outside of the housing 11. So that when the cleaning port 133 is not connected to the outside of the housing 11, the copper chips and / or aluminum chips can be collected in the collection groove 131. In this way, when the cleaning port 133 is connected to the outside of the housing 11, the copper chips and / or aluminum chips can be discharged to the outside of the housing 11 through the cleaning port 133. Specifically, in the specific implementation of the present invention, the refrigerant circulation pipeline includes a two-way valve 14, and the two-way valve 14 is arranged upstream of the filtering device 100. The cleaning port 133 is a threaded port provided at the end of the filtering structure, and a nut is connected to the threaded port. So that when the nut is connected to the threaded port, the filtering structure 13 can be in an isolated state from the outside of the housing 11. When the nut is unscrewed from the threaded port, the filtering structure is in a communicating state with the housing 11. In this way, when the filtering device 100 needs to be cleaned, the two-way valve 14 upstream of the filtering device 100 is closed, so that the nut can be removed from the threaded port, so that the maintenance personnel can clean the copper chips and / or aluminum chips in the collection groove 131 and the one-way filter 132 of the filtering structure.

[0047] As a possible implementation, as Figure 2 and Figure 3As shown, the collection groove 131 is slidably connected to the outer wall of the housing 11. There are many ways to slidably connect the collection groove 131 to the outer wall of the housing 11. For example, an axial groove is provided on the outer wall of the housing 11, and a protrusion capable of mating with the groove is provided at a position corresponding to the groove in the filtering structure. So that when the collection groove 131 is sleeved on the outer wall of the housing 11, the protrusion of the filtering structure can slide in the groove on the outer wall of the housing 11, so that the filtering structure is slidably connected to the housing 11. Based on this, the way of slidably connecting the filtering structure to the housing 11 will not be elaborated here as long as the filtering structure can be slidably connected to the housing 11. And the collection groove 131 is configured such that when the collection groove 131 slides to the first position, the notch of the collection groove 131 communicates with the opening of the housing, so that the collection groove 131 can communicate with the refrigerant inside the through hole 111, so that the copper chips and / or aluminum chips in the refrigerant can enter the collection groove 131. It is also configured such that when the collection groove 131 slides to the second position, the notch of the collection groove 131 is away from the opening 112 of the housing 11, and the filtering structure 13 can block the opening 112 of the housing 11 and the collection groove 131 of the filtering structure 13 can form a sealed cavity with the housing 11, so that the refrigerant can be sealed inside the housing 11.

[0048] As a possible implementation manner, the magnetic force unit 12 is an electromagnet installed on the housing 11. The positive pole and the negative pole of the electromagnet are arranged on both sides of the housing 11 in a facing manner, so that the through hole 111 can be in a straight and uniform magnetic field, so that the copper chips and / or aluminum chips flowing with the refrigerant can be subjected to a Lorentz force with a constant direction under the action of the magnetic field, so that the copper chips and / or aluminum chips can quickly enter the collection groove 131.

[0049] As a possible implementation manner, the filtering device 100 further includes a camera module. The camera module is arranged upstream of the magnetic filtering device 1 and on the inner wall of the through hole 111, so that the camera module can detect the size of the copper chips and / or aluminum chips in the refrigerant. In this way, the filtering device 100 can control the magnetic field intensity of the electromagnet according to the size of the copper chips and / or aluminum chips, so that copper chips and / or aluminum chips of different sizes can enter the collection groove 131. Specifically, when the present invention is specifically implemented, the camera module can be an optical imaging system module, so that an image of the metal chips in the refrigerant can be obtained through the camera module, and then the size of the metal chips can be measured through image processing and analysis techniques.

[0050] It should be noted that although the above description is about detecting the size of copper chips and / or aluminum chips in the refrigerant through the imaging module provided on the inner wall of the through hole 111, this is not restrictive. In the specific implementation of the present invention, the size of copper chips and / or aluminum chips in the through hole 111 can also be detected by a metal chip detector. When the copper chips and / or aluminum chips pass through the detector, the magnetic field in the through hole 111 will change, so that the metal chip detector can detect the size of the copper chips and / or aluminum chips.

[0051] As a possible implementation manner, the filtering device 100 further includes a flow meter, which is arranged on the inner wall of the through hole 111 and is used to measure the flow rate of the fluid, so that the filtering device 100 can adjust the magnetic field intensity of the electromagnet according to different flow rates and / or different sizes of copper chips and / or aluminum chips, so that copper chips and / or aluminum chips with different flow rates and / or different sizes enter the collection tank 131.

[0052] As a possible implementation manner, the filtering device 100 further includes a controller (not shown). The electromagnet, the imaging module (not shown), and the flow meter (not shown) are respectively connected to the controller, so that the controller can measure the flow rate of the refrigerant inside the through hole 111 according to the flow meter, and detect the size of copper chips and / or aluminum chips in the refrigerant through the imaging module. Furthermore, the controller can adjust the magnetic field intensity of the electromagnet according to the flow rate of the refrigerant and / or the size of copper chips and / or aluminum chips.

[0053] In addition, those skilled in the art can understand that although some of the embodiments described herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means that it is within the scope of the present invention and forms different embodiments. For example, in the claims of the present invention, any one of the claimed embodiments can be used in any combination.

[0054] So far, the technical solutions of the present invention have been described in conjunction with the optional embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0055] In addition, those skilled in the art can understand that although some of the embodiments described herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means that it is within the scope of the present invention and forms different embodiments. For example, in the claims of the present invention, any one of the claimed embodiments can be used in any combination.

[0056] So far, the technical solution of the present invention has been described in conjunction with the optional embodiments shown in the accompanying drawings. However, it is easily understood by those skilled in the art that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

Claims

1. A filtering device, characterized in that, The filtering device is installed in the refrigerant circulation pipeline of the air conditioner condenser. The filtering device is a magnetic filtering device, and is configured to collect metal impurities in the refrigerant into the filtering device under the action of the magnetic field of the filtering device when the refrigerant flows through the filtering device.

2. The filtering device according to claim 1, wherein The filtering device includes: A housing having an axial through-hole formed therein. The through-hole serves as a flow channel for the refrigerant. An opening is provided in the radial direction of the housing, and the opening communicates with the through-hole. A magnetic force unit disposed outside the housing and configured to provide a magnetic field for the housing. The direction of the magnetic field is set along a direction perpendicular to the axis of the housing; and A filtering structure communicating with the opening and configured to collect the metal impurities entering therein and further configured to discharge the metal impurities to the outside of the housing.

3. The filtering device according to claim 2, characterized in that, The filtering structure includes: A collection tank communicating with the opening; A one-way filter covering the inlet of the collection tank.

4. The filtering device according to claim 3, characterized in that, The collection tank includes: A cleaning port provided at the bottom of the collection tank and configured to be able to communicate or not communicate with the outside of the housing.

5. The filtering device according to claim 4, wherein, The filtering structure is slidably connected to the housing and is configured such that when the collection tank slides to a first position, the collection tank communicates with the opening, and is further configured such that when the collection tank slides to a second position, the collection tank is away from the opening and is isolated from the refrigerant inside the housing, and the filtering structure forms a sealed cavity with the housing.

6. The filtering device according to claim 2, characterized in that, The magnetic force unit is an electromagnet installed on the housing, and the positive pole and the negative pole of the electromagnet are symmetrically arranged on both sides of the housing with respect to the axis of the housing.

7. The filtering device according to claim 6, characterized in that, The filtering device further includes a camera module disposed upstream of the filtering device for detecting the size of the metal impurities so that the filtering device can control the magnetic field strength of the electromagnet according to the size of the metal impurities.

8. The filtering device according to claim 7, characterized in that The filtering device further includes: An anemometer disposed in the through-hole of the housing for measuring the flow rate of the refrigerant so that the filtering device adjusts the magnetic field strength of the electromagnet according to the flow rate and / or the size of the metal impurities, such that metal impurities with different flow rates and / or different sizes can enter the collection tank under the action of the magnetic field.

9. The filtering device according to any one of claims 1-8, characterized in that, The refrigerant circulation pipeline includes a two-way valve disposed upstream of the filtering device.

10. An air conditioner condenser, characterized in that, The air conditioner condenser includes a refrigerant circulation pipeline. The air conditioner condenser further includes the filtering device according to any one of claims 1-9.

Images