Filtering device, heating user-side hydraulic device and heating and ventilation equipment

Abstract

The application discloses a filtering device, a heating household end hydraulic device and a heating and ventilation equipment. The filtering device comprises a filtering main body, a filtering structure, a first valve group and a second valve group. The filtering main body is internally provided with an inlet flow channel, an outlet flow channel and a pressure relief flow channel and is provided with an inlet, an outlet and a pressure relief port which are communicated with the three channels respectively. The filtering structure is arranged in the filtering main body and is provided with a filtering cavity and an annular wall. A cleaning cavity is arranged between the annular wall and the filtering main body. The cleaning cavity is communicated with the outlet flow channel and is communicated with the filtering cavity through the annular wall. The filtering structure is provided with an inlet and an outlet. The inlet flow channel is communicated with the filtering cavity through the inlet. The pressure relief flow channel is communicated with the filtering cavity through the outlet. The first valve group and the second valve group are connected to the filtering main body. The first valve group is used for controlling the inlet flow channel and the outlet flow channel to be synchronously turned on and turned off. The second valve group is used for controlling the pressure relief flow channel to be turned on and turned off. The filtering structure is convenient to maintain.

Description

Technical Field

[0001] This invention relates to the field of heating, ventilation and air conditioning (HVAC) technology, and in particular to a filtration device, a hydraulic device for heating households, and HVAC equipment. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] In HVAC equipment, filtration devices are often used to filter impurities in water to ensure clean water. When the internal filter structure needs to be cleaned or replaced after a period of use, it is inconvenient to remove the filter structure due to the pressure inside the filter device. Summary of the Invention

[0004] The objective of this invention is to at least solve the problem of facilitating the disassembly of the filter structure for maintenance. This objective is achieved through the following technical solution: In a first aspect, this application provides a filtration device, comprising: a filter body having an inlet channel, an outlet channel, and a pressure relief channel formed therein; the filter body having an inlet port communicating with the inlet channel, an outlet port communicating with the outlet channel, and a pressure relief port communicating with the pressure relief channel; a filter structure disposed within the filter body, the filter structure having a filter cavity and an annular wall surrounding the filter cavity; a cleaning cavity formed between the annular wall and the filter body; the cleaning cavity communicating with the outlet channel; the cleaning cavity and the filter cavity being in liquid communication via the annular wall; along the axial direction of the filter cavity, the filter structure having an inlet and an outlet communicating with the filter cavity at opposite ends; the inlet channel communicating with the filter cavity via the inlet; and the pressure relief channel communicating with the filter cavity via the outlet; a first valve group connected to the filter body for controlling the synchronous opening and closing of the inlet channel and the outlet channel; and a second valve group connected to the filter body for controlling the opening and closing of the pressure relief channel.

[0005] Using the above technical solution, when the filter device is in normal use, the first valve group is opened and the second valve group is closed, allowing liquid to flow into the interior of the filter body through the inlet, and sequentially through the inlet channel, filter chamber, annular wall, cleaning chamber, and outlet channel, finally flowing out through the outlet. The annular wall of the filter structure only allows liquid to pass through, thereby intercepting impurities in the liquid and improving the purity of the liquid flowing out of the outlet. When maintenance operations such as cleaning or replacing the filter structure are required, the first valve group is closed and the second valve group is opened, allowing the residual liquid inside the filter body to be discharged through the pressure relief port, thereby releasing the internal water pressure of the filter body and facilitating the removal of the filter structure from the filter body. This helps to reduce the operational difficulty of cleaning or replacing the filter structure.

[0006] In some embodiments of this application, the liquid inlet and the liquid outlet are both located above the pressure relief port along the direction of gravity, and the liquid inlet channel and the liquid outlet channel are both located above the pressure relief channel.

[0007] By adopting the above technical solution, during the pressure relief process, the residual liquid in the filter body can flow to the pressure relief channel more quickly and be discharged from the pressure relief port, which helps to improve the pressure relief efficiency of the filter device, thereby improving the maintenance efficiency of the filter structure.

[0008] In some embodiments of this application, the filter body includes a main body and a pressure relief section. The filter structure is disposed within the main body. A cleaning chamber is formed between the annular wall and the main body. A first valve group is connected to the main body. An inlet channel and an outlet channel are formed within the main body. The main body has an inlet port, an outlet port, and a first open end communicating with the filter chamber. A second valve group is connected to the pressure relief section. A pressure relief channel is formed within the pressure relief section. The pressure relief section has a pressure relief port communicating with the pressure relief channel and a second open end. The main body and the pressure relief section are sealed together through the first open end and the second open end. The filter chamber and the pressure relief channel are connected through the outlet, the first open end, and the second open end.

[0009] By adopting the above technical solution, it is easy to process and form liquid inlet and liquid outlet channels in the main body, and it is also easy to process and form pressure relief channels in the pressure relief section, which reduces the processing difficulty of the filter body. In addition, different materials can be selected for the main body and pressure relief section to be assembled, thereby improving the versatility of the filtration device.

[0010] In some embodiments of this application, the first opening end is detachably connected to the second opening end.

[0011] By adopting the above technical solution, different main bodies and pressure relief parts can be selected and assembled according to different usage requirements, different installation environments, or different filtration scenarios for different flow rates and different liquids. This is beneficial to improving the diversity and versatility of the filtration device, and also facilitates the individual maintenance or replacement of the main body or pressure relief part, reducing the cost of replacing the entire device due to a failure of a certain structure, thereby improving the economy of the filtration device.

[0012] In some embodiments of this application, one of the first open end and the second open end is sleeved on the other, and the first open end and the second open end are engaged by snap-fit ​​or threaded engagement.

[0013] The above technical solution is beneficial to improving the reliability and versatility of the sealing connection between the first opening end and the second opening end.

[0014] In some embodiments of this application, the main body includes a first main body and a second main body, the first main body and the second main body are detachably connected, the second main body is connected between the first main body and the pressure relief part, the first valve group is connected to the first main body, the first main body has the liquid inlet channel and the liquid outlet channel formed therein, the first main body is provided with the liquid inlet and the liquid outlet; the filter structure is disposed in the second main body, the annular wall and the second main body form the cleaning chamber, and the second main body is provided with the first opening end.

[0015] By adopting the above technical solution, when maintenance operations such as cleaning or replacing the filter structure are required, the filter structure located inside it can be removed by removing the second main body. This helps to improve the efficiency of disassembling and assembling the filter structure, and can also effectively reduce the adverse effects on the first main body caused by disassembling and assembling the filter structure, thereby helping to improve the service life of the filter device.

[0016] In some embodiments of this application, the filter structure further includes a magnetic suction element, at least a portion of which is disposed in the filter cavity.

[0017] Using the above technical solution, the magnetic suction component is used to adsorb magnetic substances such as iron filings in the liquid of the filter chamber. The magnetic suction component can work together with the annular wall to intercept magnetic and non-magnetic impurities in the liquid, which helps to improve the filtration effect of the filtration device.

[0018] In some embodiments of this application, a portion of the magnetic suction element is disposed in the filter cavity, and another portion is disposed in the pressure relief channel.

[0019] The above technical solution facilitates the disassembly and assembly of the magnetic components through the pressure relief channel, thereby meeting maintenance needs such as cleaning or replacement of the magnetic components.

[0020] In some embodiments of this application, the pressure relief channel includes a connected installation channel and a drainage channel, the installation channel and the drainage channel are intersecting, the pressure relief channel is connected to the filter chamber through the outlet, a part of the magnetic suction member is disposed in the filter chamber and another part is disposed in the installation channel, and the second valve group is connected to the drainage channel.

[0021] The above technical solution has a reasonable layout, which facilitates the assembly of the magnetic suction components and the second valve group.

[0022] In some embodiments of this application, the filter body is provided with an assembly port communicating with the installation channel, and the filter device further includes a sealing element, which is detachably connected to the filter body and seals the assembly port.

[0023] Using the above technical solution, when it is necessary to clean or replace the magnetic component, the magnetic component can be removed through the assembly port by removing the seal, which is convenient for operation.

[0024] In some embodiments of this application, along the axial direction of the filter cavity, the annular wall has a first top end and a first bottom end facing opposite directions, the magnetic attractor has a second top end and a second bottom end facing opposite directions, the distance between the first top end and the first bottom end is L1, the distance between the second top end and the first bottom end is L2, and 1 / 3≤(L2 / L1)≤2 / 3.

[0025] By adopting the above technical solution, and setting the ratio of L2 to L1 within the above range, it is beneficial to improve the adsorption effect of the magnetic suction component on the magnetic substances in the liquid in the filter chamber, and also to allow the liquid to have sufficient flow space in the filter chamber to increase the flow rate of the liquid, thereby improving the filtration efficiency of the filter device.

[0026] In some embodiments of this application, the magnetic suction component includes a magnetic suction part and an assembly part connected together, wherein the magnetic suction part and the assembly part are made of different materials, and the magnetic suction part is disposed in the filter cavity.

[0027] By adopting the above technical solution, the magnetic suction component can be assembled from magnetic suction parts and assembly parts made of different materials, which helps to reduce the material cost of the magnetic suction component, thereby helping to reduce the overall cost of the filtration device.

[0028] In some embodiments of this application, the first valve assembly includes a first valve, the first valve including a first valve core, the first valve core being rotatably disposed within the filter body for connecting the liquid inlet to the inlet and the liquid outlet to the cleaning chamber, or disconnecting the connection between the liquid inlet and the inlet and the liquid outlet and the cleaning chamber.

[0029] By adopting the above technical solution, the opening and closing of the inlet and outlet flow channels can be controlled simultaneously by rotating the first valve core, which helps to reduce operation steps and improve operation efficiency.

[0030] In some embodiments of this application, the first valve group includes an inlet valve and an outlet valve. The inlet valve is connected to the side of the inlet opposite to the filter body and is used to control the opening and closing of the inlet. The outlet valve is connected to the side of the outlet opposite to the filter body and is used to control the opening and closing of the outlet.

[0031] By adopting the above technical solution, and by placing both the inlet valve and the outlet valve on the outside of the filter body, the space occupied by the two valves on the internal space of the filter body can be reduced, which helps to simplify the structure of the filter body and facilitate its processing and manufacturing.

[0032] In some embodiments of this application, the second valve assembly includes a second valve, the second valve including a second valve core, the second valve core being rotatably disposed within the pressure relief channel for connecting the pressure relief port with the outlet or disconnecting the connection between the pressure relief port and the outlet.

[0033] By adopting the above technical solution, the second valve core is placed in the pressure relief channel, which helps to reduce its external space occupation and thus improves the structural compactness of the filter device.

[0034] In some embodiments of this application, the filtering device further includes a protective component disposed at the pressure relief port of the filtering body, for covering the pressure relief port or exposing the pressure relief port.

[0035] By adopting the above technical solution, the protective components can protect the pressure relief port, thereby reducing the possibility of external impurities entering the pressure relief channel through the pressure relief port, which helps to improve the sealing performance and reliability of the filtration device.

[0036] In some embodiments of this application, the protective component includes a protective member and a flexible connector. The protective member is used to cover the pressure relief port or expose the pressure relief port. The protective member is connected to the filter body through the flexible connector.

[0037] By adopting the above technical solution, when the pressure relief port is exposed by the protective component, the protective component can still be connected to the filter body through the flexible connector, reducing the possibility of loss of the protective component.

[0038] Secondly, this application also provides a heating household hydraulic device, comprising: a body; and a filtration device as described in any of the above technical solutions, wherein the filtration device is disposed within the body.

[0039] By adopting the above technical solution, when maintenance operations such as cleaning or replacing the filter device inside the machine are required, it is convenient to disassemble and assemble the filter structure inside the filter device, thereby improving the maintenance efficiency of the filter device and thus improving the circulation efficiency of the hydraulic device at the heating end.

[0040] Thirdly, this application also provides a heating and ventilation device, including the heating end hydraulic device described in any of the above technical solutions. Attached Figure Description

[0041] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the structure of a filtering device provided in some embodiments of this application; Figure 2 Cross-sectional views of a filtering device provided in some embodiments of this application; Figure 3 This is a schematic diagram of the structure of a filtering device provided in other embodiments of this application; Figure 4 Cross-sectional views of a filtering device provided in other embodiments of this application; Figure 5 Cross-sectional views of a filtering device provided in some embodiments of this application; Figure 6 Schematic diagrams of the structure of the filtering device provided in some embodiments of this application; Figure 7 This is a schematic diagram of the structure of a heating household hydraulic device provided in some embodiments of this application.

[0042] The attached figures are labeled as follows: 1. Heating unit at the customer's end; 100. Filtration device; 200. Unit body; 10. Filter body; 101. Liquid inlet channel; 102. Liquid outlet channel; 103. Pressure relief channel; 1031. Installation channel; 1032. Drainage channel; 104. Liquid inlet; 105. Liquid outlet; 106. Pressure relief port; 107. First opening end; 108. Second opening end; 109. Assembly port; 11. Main body; 111. First main body; 112. Second main body; 12. Pressure relief part; 20. Filter structure; 201. Filter chamber; 202. Cleaning chamber; 203. Inlet; 204. Outlet; 21. Annular wall; 211. First top end; 212. First bottom end; 22. Magnetic suction element; 220. Second top end; 221. Magnetic suction part; 222. Assembly part; 30. First valve assembly; 31. First valve; 311. First valve core; 312. First valve stem; 32. Inlet valve; 33. Outlet valve; 40. Second valve assembly; 41. Second valve; 411. Second valve core; 412. Second valve stem; 50. Seal; 60. Protective assembly; 61. Protective component; 62. Flexible connector; 70. Positioning structure; X, direction of gravity. Detailed Implementation

[0043] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0044] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “” used herein may also indicate the inclusion of the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated, unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0045] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0046] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0047] Combined with appendix Figure 1-7 As shown in the figure, this application provides a filtration device 100 for filtering liquids such as refrigerant, water, and oil, and can be used in heating and ventilation equipment or heat pump systems.

[0048] The filtration device 100 provided in this embodiment includes a filter body 10, a filter structure 20, a first valve group 30, and a second valve group 40. The filter body 10 has an inlet channel 101, an outlet channel 102, and a pressure relief channel 103. The filter body 10 is provided with an inlet port 104 communicating with the inlet channel 101, an outlet port 105 communicating with the outlet channel 102, and a pressure relief port 106 communicating with the pressure relief channel 103. The filter structure 20 is disposed within the filter body 10 and has a filter cavity 201 and an annular wall 21 surrounding the filter cavity 201. A cleaning chamber is formed between the annular wall 21 and the filter body 10. 202, the cleaning chamber 202 is connected to the liquid outlet channel 102. The cleaning chamber 202 and the filter chamber 201 are connected by an annular wall 21. Along the axial direction of the filter chamber 201, the two ends of the filter structure 20 are respectively provided with an inlet 203 and an outlet 204 connected to the filter chamber 201. The liquid inlet channel 101 is connected to the filter chamber 201 through the inlet 203. The pressure relief channel 103 is connected to the filter chamber 201 through the outlet 204. The first valve group 30 is connected to the filter body 10 and is used to control the synchronous opening and closing of the liquid inlet channel 101 and the liquid outlet channel 102. The second valve group 40 is connected to the filter body 10 and is used to control the opening and closing of the pressure relief channel 103.

[0049] The filter body 10 is the main part of the filter device 100. The filter body 10 has an inlet channel 101, an outlet channel 102 and a pressure relief channel 103 processed inside. The outer wall of the filter body 10 has an inlet port 104, an outlet port 105 and a pressure relief port 106. The filter body 10 also has a part that accommodates the filter structure 20. The inner wall surface of the annular wall 21 included in the filter structure 20 encloses to form a filter cavity 201. The outer wall surface of the annular wall 21 and the inner wall surface of the filter body 10 enclose to form a cleaning cavity 202.

[0050] In this embodiment, the inlet channel 101 and the outlet channel 102 can be the main flow channels. Liquid can enter the interior of the filter body 10 through the inlet port 104 and flow out sequentially through the inlet channel 101, the inlet 203, the filter chamber 201, the annular wall 21, the cleaning chamber 202, the outlet channel 102, and the outlet port 105 to meet the user's liquid filtration needs. The pressure relief channel 103 can be a branch channel. Residual liquid in the filter body 10 can flow into the pressure relief channel 103 and be discharged through the pressure relief port 106.

[0051] "The first valve assembly 30 is used to control the synchronous opening and closing of the inlet channel 101 and the outlet channel 102" means that the first valve assembly 30 may include a valve core portion disposed within the filter body 10. The opening and closing states of the inlet channel 101 and the outlet channel 102 are controlled by rotating or moving the valve core. For example, when the inlet channel 101 is in the connected state, the inlet port 104 and the inlet 203 (or the filter chamber 201) can be connected through the inlet channel 101, allowing liquid to enter sequentially from the inlet port 104. The inlet flow channel 101, inlet 203, and filter chamber 201 are connected. When the inlet flow channel 101 is disconnected, the inlet port 104 and the inlet 203 (or filter chamber 201) are disconnected, preventing liquid entering the inlet flow channel 101 through the inlet 203 from entering the filter chamber 201. When the outlet flow channel 102 is connected, the outlet port 105 and the cleaning chamber 202 are connected through the outlet flow channel 102, allowing liquid in the cleaning chamber 202 to flow into and out of the outlet flow channel 102. 02 flows out from the outlet 105. When the outlet channel 102 is disconnected, the connection between the outlet 105 and the cleaning chamber 202 is broken, preventing the liquid entering the outlet channel 102 from the cleaning chamber 202 from flowing out from the outlet 105. Of course, the first valve group 30 may also include two valve bodies respectively disposed at the inlet 104 and the outlet 105. The two valve bodies are independently disposed, and the opening and closing of the inlet 104 and the outlet 105 are controlled by driving the two valve bodies to rotate or move individually. In the closed state, when the inlet 104 is open, liquid can enter the inlet channel 101 through the inlet 104 and then enter the filter chamber 201 through the inlet 203. When the inlet 104 is closed, liquid cannot enter the inlet channel 101 through the inlet 104. When the outlet 105 is open, liquid in the outlet channel 102 flows out through the outlet 105. When the outlet 105 is closed, liquid in the outlet channel 102 cannot flow out through the outlet 105.

[0052] "Synchronous on / off" means that both the inlet channel 101 and the outlet channel 102 are either connected or disconnected. Controlling the synchronous opening and closing of the inlet port 104 and the outlet port 105 is one way to "control the synchronous on / off of the inlet channel 101 and the outlet channel 102". "Synchronous opening and closing" means that both the inlet port 104 and the outlet port 105 are either open or closed.

[0053] "The second valve assembly 40 is used to control the opening and closing of the pressure relief channel 103" means that the second valve assembly 40 may include a valve core portion disposed within the filter body 10. The opening and closing state of the pressure relief channel 103 is controlled by rotating or moving the valve core. When the pressure relief channel 103 is in the connected state, the pressure relief port 106 and the outlet 204 (or the filter chamber 201) are connected through the pressure relief channel 103, allowing the liquid in the filter body 10 to sequentially enter the pressure relief channel 103 through the filter chamber 201 and the outlet 204, and be discharged from the pressure relief port 106. When the pressure relief channel 103 is in the disconnected state... In this state, the pressure relief port 106 and the outlet 204 (or the filter chamber 201) are disconnected, and the liquid entering the pressure relief channel 103 from the outlet 204 cannot be discharged from the pressure relief port 106. Of course, the second valve group 40 may also include a valve body disposed on the pressure relief port 106, and the opening and closing state of the pressure relief port 106 is controlled by driving the valve body to rotate or move. When the pressure relief port 106 is open, the liquid in the pressure relief channel 103 is discharged from the pressure relief port 106. When the pressure relief port 106 is closed, the liquid in the pressure relief channel 103 cannot be discharged from the pressure relief port 106.

[0054] Among them, controlling the opening and closing of the pressure relief port 106 is one of the ways to "control the on / off state of the pressure relief channel 103".

[0055] The filter device 100 has a filtration state and a maintenance state. In the filtration state, liquid can sequentially flow from the inlet 104 into the inlet channel 101, the filter chamber 201, the cleaning chamber 202, and the outlet channel 102, and then flow out from the outlet 105. Liquid in the filter chamber 201 can flow through the annular wall 21 into the cleaning chamber 202. The annular wall 21 can intercept impurities and other particles carried by the liquid, thereby improving the purity of the liquid flowing into the cleaning chamber 202. This allows the liquid to flow into the filter device 100 from the inlet 104 and out from the outlet 105. The filter is filtered to complete the flow. In the filtration state, the first valve group 30 controls the inlet flow channel 101 and the outlet flow channel 102 to be opened simultaneously, and the second valve group 40 controls the shut-off of the pressure relief flow channel 103. In the maintenance state, the residual liquid inside the filter device 100 can be discharged sequentially through the outlet 204, the pressure relief flow channel 103 and the pressure relief port 106 to discharge the residual liquid inside the filter device 100 and complete the pressure relief. In the maintenance state, the first valve group 30 controls the inlet flow channel 101 and the outlet flow channel 102 to be closed simultaneously, and the second valve group 40 controls the opening of the pressure relief flow channel 103.

[0056] The filter device 100 is used as follows: the first valve group 30 is opened and the second valve group 40 is closed to open the inlet channel 101 and the outlet channel 102 respectively, and to cut off the pressure relief channel 103, so that liquid can enter the interior of the filter device 100 from the inlet port 104 and flow out sequentially through the inlet channel 101, the inlet 203, the filter chamber 201, the cleaning chamber 202, the outlet channel 102 and the outlet port 105 to complete the filtration of the liquid; the first valve group 30 is closed and the second valve group 40 is opened to cut off the inlet channel 101 and the outlet channel 102 respectively, and to open the pressure relief channel 103, so that liquid cannot enter the interior of the filter device 100 from the inlet port 104, and the liquid inside the filter device 100 cannot flow out from the outlet port 105, but is discharged sequentially through the outlet 204, the pressure relief channel 103 and the pressure relief port 106 to complete the internal pressure relief of the filter device 100.

[0057] The filtration device 100 provided in this embodiment can switch between filtration and maintenance states by controlling the first valve group 30 and the second valve group 40 respectively. When the filtration device 100 is in filtration state, liquid can flow into the interior of the filter body 10 through the inlet 104, and sequentially pass through the inlet channel 101, the filter chamber 201, the annular wall 21, the cleaning chamber 202, and the outlet channel 102, and finally flow out through the outlet 105. The annular wall 21 of the filter structure 20 only allows liquid to pass through, so as to intercept impurities in the liquid and improve the purity of the liquid flowing out of the outlet 105 to meet user needs. When the filtration device 100 is in maintenance state, the residual liquid inside the filter body 10 can flow along the filter chamber 201, the outlet 204, and the pressure relief channel. The flow channel 103 and the pressure relief port 106 discharge outward to release the internal water pressure of the filter body 10. After the filter body 10 is depressurized, it is easy for operators to remove the filter structure 20 from the filter body 10 for cleaning or replacement and other maintenance. This helps to reduce the difficulty of maintaining the filter structure 20. In addition, when the liquid outlet 105 of the filter device 100 is connected to the unit 200 in the user's room, the user can operate it himself without the need for professional maintenance, so as to realize the convenience and practicality of the filter device 100. Furthermore, after the pressure is released, there is no liquid or very little liquid inside the filter device 100. During the disassembly of the filter structure 20, the possibility of liquid spraying out of the filter device 100 is reduced, which also helps to improve the safety of maintaining the filter structure 20.

[0058] Furthermore, when the filter device 100 is depressurized by draining liquid through the pressure relief port 106, the impurities intercepted by the annular wall 21 inside the filter body 10 can also be discharged through the pressure relief port 106 along with the liquid, so that the pressure relief port 106 also has a sewage discharge function, thereby improving the cleanliness inside the filter body 10 and reducing the number of times the annular wall 21 of the filter structure 20 needs to be cleaned or replaced.

[0059] In some embodiments, the axis of the inlet 104 is parallel to the axis of the liquid inlet 104. As an example, the axis of the inlet 104 and the axis of the liquid inlet 104 are the same straight line.

[0060] like Figure 2 As shown, in some embodiments, along the direction of gravity X, the liquid inlet 104 and the liquid outlet 105 are both located above the pressure relief port 106, and the liquid inlet channel 101 and the liquid outlet channel 102 are both located above the pressure relief channel 103.

[0061] When the filter body 10 is placed vertically along the gravity direction X, the gravity direction X can also be understood as the height direction of the filter body 10. Optionally, the gravity direction X is parallel to the axial direction of the filter cavity 201.

[0062] By configuring the filter device 100 as described above, residual liquid inside the filter device 100 can enter the pressure relief channel 103 more quickly and smoothly under the effect of the height difference and be discharged from the pressure relief port 106. This effectively improves the pressure relief efficiency inside the filter device 100, shortens the pressure relief waiting time before maintenance of the filter structure 20, and thus improves the maintenance efficiency of the filter structure 20. This allows the filter device 100 to be put back into operation more quickly. Furthermore, it helps to reduce the possibility of residual liquid inside the filter device 100 after pressure relief, thereby improving the pressure relief effect inside the filter device 100. This facilitates subsequent cleaning or disassembly of the filter structure 20 and effectively reduces the possibility of liquid spraying out when disassembling the filter device 100, thereby improving operational safety. In addition, by configuring the filter device 100 as described above, the liquid can only flow towards the lower pressure relief channel 103 and the pressure relief port 106, reducing the possibility of liquid backflow and further improving the pressure relief efficiency.

[0063] Furthermore, when the filter device 100 is in the filtration state, the mud and other impurities filtered by the annular wall 21 of the filter structure 20 will naturally settle in the filter chamber 201 or adhere to the annular wall 21. The mud and other impurities may also settle from the outlet 204 to the pressure relief channel 103 located at the lower position. When the filter structure 20 needs to be cleaned, maintained or replaced, that is, during the process of depressurizing the inside of the filter device 100, the residual liquid inside will carry the mud and other impurities out through the pressure relief port 106 located at the lower position. This also helps to improve the cleanliness of the filter chamber 201 and the pressure relief channel 103, thereby effectively reducing the possibility of blockage of the outlet 204 of the filter chamber 201 and the pressure relief channel 103, thus helping to improve the filtration effect and reliability of the filter device 100.

[0064] Please see Figure 2 At once Figure 4 In some embodiments, the filter body 10 includes a main body 11 and a pressure relief part 12. The filter structure 20 is disposed in the main body 11. A cleaning chamber 202 is formed between the annular wall 21 and the main body 11. A first valve group 30 is connected to the main body 11. An inlet channel 101 and an outlet channel 102 are formed in the main body 11. The main body 11 is provided with an inlet 104, an outlet 105, and a first opening end 107 connected to the filter chamber 201. A second valve group 40 is connected to the pressure relief part 12. A pressure relief channel 103 is formed in the pressure relief part 12. The pressure relief part 12 is provided with a pressure relief port 106 connected to the pressure relief channel 103 and a second opening end 108. The main body 11 and the pressure relief part 12 are sealed together through the first opening end 107 and the second opening end 108. The filter chamber 201 and the pressure relief channel 103 are connected through the outlet 204, the first opening end 107, and the second opening end 108.

[0065] By dividing the filter body 10 into a main body 11 for filtering liquids and a pressure relief part 12 for depressurization, the main body 11 and the pressure relief part 12 can be manufactured independently and sealed together by the first open end 107 and the second open end 108. This reduces the difficulty of manufacturing and improves the efficiency of manufacturing the filter body 10. Furthermore, by installing the first valve group 30 and the second valve group 40 on the main body 11 and the pressure relief part 12 respectively, the possibility of interference between the first valve group 30 and the second valve group 40 can be reduced. This improves the effectiveness of the filter device 100 in switching between the filtering state and the depressurization state, and thus improves the reliability of the filter device 100.

[0066] Furthermore, by dividing the filter body 10 into a combination structure of a main body 11 and a pressure relief part 12, it is easy to process and form an inlet flow channel 101 and an outlet flow channel 102 in the main body 11, and it is also easy to process and form a pressure relief flow channel 103 in the pressure relief part 12. This reduces the processing difficulty of the filter body 10, and different materials of the main body 11 and the pressure relief part 12 can be selected for assembly to improve the versatility of the filter device 100.

[0067] Optionally, the main body 11 and the pressure relief part 12 can be detachably connected via the first open end 107 and the second open end 108, which facilitates their assembly and disassembly, improving operational convenience. When one of them malfunctions, it is also convenient to maintain or replace it, which helps reduce the cost of replacing the whole unit. Furthermore, the detachable connection also enhances the assembly flexibility between the main body 11 and the pressure relief part 12, allowing the filter device 100 to be assembled with different main body 11 and pressure relief part 12 according to different installation environments and requirements, thereby further improving the practicality and versatility of the filter device 100 to better meet user needs. Of course, the main body 11 and the pressure relief part 12 can also be connected by non-detachable methods such as bonding or welding.

[0068] Optionally, the first open end 107 and the second open end 108 can be sealed together by butt joint, or they can be sealed together by sleeve.

[0069] Optionally, the main body 11 and the pressure relief part 12 can be integrally formed, which is beneficial to improving processing efficiency. Alternatively, the main body 11 and the pressure relief part 12 can be provided separately and then assembled into one unit, which is beneficial to reducing processing difficulty and also to improving the flexibility of making the main body 11 and the pressure relief part 12 separately, thereby improving the diversity of the filter body 10 and the filter device 100.

[0070] Optionally, the main body 11 and the pressure relief part 12 can be made of the same material, or of course, they can be made of different materials.

[0071] In some embodiments, the first opening end 107 is detachably connected to the second opening end 108.

[0072] By making the main body 11 and the pressure relief part 12 detachably connected, different main bodies 11 and different pressure relief parts 12 can be selected for assembly according to different usage requirements, different installation environments, or different filtration scenarios for different flow rates and different liquids. This is beneficial to improving the diversity and versatility of the filter device 100, and also facilitates the individual maintenance or replacement of the main body 11 or the pressure relief part 12, reducing the cost of replacing the entire device due to a failure of a certain structure, thereby improving the economy of the filter device 100.

[0073] like Figure 4 As shown, in some embodiments, one of the first open end 107 and the second open end 108 is fitted onto the other, and the first open end 107 and the second open end 108 are engaged by snap-fit ​​or threaded engagement.

[0074] By fitting the first opening end 107 and the second opening end 108 together, installation and positioning are facilitated, and the sealing effect is improved, thereby improving the reliability of the filter device 100.

[0075] The first open end 107 can be fitted onto the outer periphery of the second open end 108. Of course, the second open end 108 can also be fitted onto the outer periphery of the first open end 107. As an example, the first open end 107 is fitted onto the outer periphery of the second open end 108.

[0076] The first opening end 107 and the second opening end 108 can be detachably connected by a snap-fit ​​mechanism, which facilitates installation and disassembly without the need for tools, thereby improving the efficiency of assembly and disassembly and thus improving the manufacturing efficiency of the filter device 100. Optionally, one of the first opening end 107 and the second opening end 108 has a protrusion, and the other has a groove, with the protrusion snapping into the groove.

[0077] The first open end 107 and the second open end 108 can also be detachably connected by a threaded connection. The assembly body connected in this way has a stronger locking force, which helps to improve the connection strength and sealing effect of the first open end 107 and the second open end 108, thereby improving the reliability of the filter device 100.

[0078] Please see Figure 2 and Figure 4 In some embodiments, the main body 11 includes a first main body 111 and a second main body 112, which are detachably connected. The second main body 112 is connected between the first main body 111 and the pressure relief part 12. The first valve group 30 is connected to the first main body 111. An inlet channel 101 and an outlet channel 102 are formed in the first main body 111. The first main body 111 is provided with an inlet port 104 and an outlet port 105. A filter structure 20 is disposed in the second main body 112. A cleaning chamber 202 is formed between the annular wall 21 and the second main body 112. The second main body 112 is provided with a first open end 107.

[0079] By setting it up in the above manner, the first main body 111 and the second main body 112 can be processed and assembled independently, which helps to reduce processing difficulty and improve production efficiency. When it is necessary to clean, maintain or replace the filter structure 20, the filter structure 20 located inside it can be disassembled by removing the second main body 112, which helps to improve the efficiency of disassembling and assembling the filter structure 20.

[0080] The first main body 111 is provided with an inlet 104 and an outlet 105. During the use of the filter device 100, an inlet pipe is connected to the inlet 104 and an outlet pipe is connected to the outlet 105 to ensure the normal operation of the filter device 100. Therefore, with the above-mentioned configuration, when disassembling and assembling the filter structure 20, only the second main body 112 needs to be removed from the first main body 111 to remove the filter structure 20, thereby improving the convenience and efficiency of operation and reducing the possibility of affecting the sealing performance due to frequent disassembly and assembly of the first main body 111. At the same time, since the first main body 111 is also provided with a first valve group 30, the possibility of readjusting the first valve group 30 due to disassembly and assembly of the first main body 111 can also be reduced, which is conducive to improving the reliability and service life of the filter device 100.

[0081] Furthermore, by setting the first body 111 and the second body 112 as detachably connected structures, different first bodies 111 and different second bodies 112 can be selected for connection and assembly according to different usage requirements, different installation environments, or different flow rates or different liquid filtration scenarios. This is beneficial to improving the diversity and versatility of the filter device 100. In addition, it is also convenient to maintain or replace the first body 111 or the second body 112 individually, reducing the cost of replacing the entire device due to a failure of a certain structure, thereby improving the economy of the filter device 100.

[0082] A cleaning chamber 202 is formed between the annular wall 21 and the second body 112. Along the direction of gravity, an opening is formed between the end of the annular wall 21 facing the first body 111 and the end of the second body 112 facing the first body 111. The cleaning chamber 202 is connected to the liquid outlet channel 102 through this opening.

[0083] Please continue reading Figure 2 and Figure 4 In some embodiments, the filter structure 20 further includes a magnetic member 22, at least a portion of which is disposed in the filter cavity 201.

[0084] The magnetic suction element 22 is used to adsorb magnetic substances such as iron filings, rust, metal shavings, and welding slag in the liquid in the filter chamber 201. The liquid in the liquid inlet channel 101 enters the filter chamber 201 through the inlet 203. The liquid will first come into contact with the magnetic suction element 22 and then flow through the annular wall 21 to the cleaning chamber 202. The magnetic suction element 22 can adsorb magnetic substances in the liquid, and the annular wall 21 can block the passage of small non-magnetic substances in the liquid. This allows the magnetic suction element 22 to work together with the filter structure 20 to intercept magnetic and non-magnetic impurities in the liquid, which helps to improve the filtration effect and accuracy of the filter device 100 and makes the liquid flowing out of the outlet 204 cleaner.

[0085] By setting up the magnetic suction element 22 to adsorb magnetic substances in the liquid inside the filter chamber 201, the possibility of these substances impacting the annular wall 21 along with the liquid can be reduced. This reduces the possibility of the annular wall 21 becoming clogged, worn, or even scratched, thereby improving the interception efficiency and service life of the annular wall 21 for impurity particles. Consequently, this improves the filtration effect and service life of the filter structure 20 and the filter device 100. Furthermore, it also helps to reduce the frequency of cleaning, maintenance, or replacement of the filter structure 20, thereby improving the working efficiency of the filter device 100.

[0086] Optionally, the magnetic attractor 22 may be entirely located within the filter chamber 201, or only a portion of it may be located within the filter chamber 201.

[0087] Optionally, the magnetic attractor 22 can be a permanent magnet or an electromagnet, which can be selected and replaced according to actual needs.

[0088] Optionally, the magnetic attractor 22 is located at the center of the filter structure 20. This can be understood as the magnetic attractor 22 being located at the center of the orthographic projection of the filter structure 20 within the same projection plane perpendicular to the axis of the filter cavity 201. Alternatively, it can be understood as the magnetic attractor 22 being located at the center of the annular wall 21 when the annular wall 21 is a circular structure.

[0089] The annular wall 21 and magnetic suction component 22 included in the filter structure 20 are separately configured structures, and can be disassembled and maintained separately.

[0090] In some embodiments, a portion of the magnetic suction member 22 is disposed in the filter chamber 201, and another portion is disposed in the pressure relief channel 103.

[0091] The above technical solution facilitates the disassembly and assembly of the magnetic component 22 through the pressure relief channel 103, so as to meet the maintenance needs such as cleaning or replacement of the magnetic component 22.

[0092] The other part of the magnetic suction member 22 located in the pressure relief channel 103 may or may not be magnetic. Optionally, a part of the magnetic suction member 22 is disposed in the filter chamber 201 and is magnetic, while the other part is disposed in the pressure relief channel 103 and is not magnetic. In this structure, the other part of the magnetic suction member 22 located in the pressure relief channel 103 only serves to fix the assembly. Alternatively, a part of the magnetic suction member 22 is disposed in the filter chamber 201 and is magnetic, while the other part is disposed in the pressure relief channel 103 and is magnetic. In this structure, the other part of the magnetic suction member 22 located in the pressure relief channel 103 is used to adsorb magnetic substances in the liquid in the pressure relief channel 103, so as to reduce the possibility of magnetic impurities adhering to the inner wall of the pressure relief channel 103 or clogging the pressure relief channel 103, thereby effectively ensuring the cleanliness of the pressure relief channel 103. During pressure relief, the liquid can be discharged more quickly and smoothly through the pressure relief channel 103 and the pressure relief port 106, thereby improving the pressure relief efficiency of the filter device 100.

[0093] The filter device 100 provided in this application embodiment can maintain the annular wall 21 and the magnetic suction member 22 included in the filter structure 20 separately according to the usage requirements. For example, when there are too many impurities on the annular wall 21, the annular wall 21 can be disassembled and reassembled by disassembling the second main body 112 to maintain it. When there are too many impurities on the magnetic suction member 22, the magnetic suction member 22 can be disassembled and reassembled by disassembling the pressure relief part 12 to maintain it.

[0094] like Figure 2 As shown, in some embodiments, the pressure relief channel 103 includes a connected installation channel 1031 and a drainage channel 1032. The installation channel 1031 and the drainage channel 1032 are intersected. The installation channel 1031 is connected to the filter chamber 201 through the outlet 204. A part of the magnetic suction member 22 is disposed in the filter chamber 201 and another part is disposed in the installation channel 1031. The second valve group 40 is connected to the drainage channel 1032.

[0095] "The installation channel 1031 and the drainage channel 1032 are intersecting" means that there is an angle between the axis of the installation channel 1031 and the axis of the drainage channel 1032, which makes the pressure relief channel 103 more compact and helps to improve the structural compactness of the filter device 100.

[0096] The magnetic suction member 22 has a portion that is installed in the mounting channel 1031, so that when it is installed or removed, it can be installed in a layout in which part of it is located in the liquid inlet channel 101 and the other part is located in the mounting channel 1031.

[0097] As an example, one end of the installation channel 1031 along its own axis is connected to the filter chamber 201 through the outlet 204. The periphery of the installation channel 1031 is provided with a communication port connected to the drain channel 1032, so that during the depressurization process of the filter device 100, the residual liquid inside the filter body 10 can be discharged sequentially through the installation channel 1031, the depressurization channel 103 and the depressurization port 106.

[0098] like Figure 2 As shown, in some embodiments, the filter body 10 is provided with an assembly port 109 communicating with the installation channel 1031, and the filter device 100 further includes a seal 50, which is detachably connected to the filter body 10 and seals the assembly port 109.

[0099] When maintenance operations such as cleaning or replacing the magnetic component 22 are required, there is no need to disassemble the filter body 10 or remove the pressure relief part 12. The magnetic component 22 can be removed through the assembly port 109 simply by removing the seal 50. This effectively simplifies the disassembly and assembly steps of the magnetic component 22, reduces operation time and difficulty, and improves the ease of maintenance of the magnetic component 22.

[0100] It should be noted that before disassembling the magnetic component 22, the filter device 100 also needs to be depressurized, that is, the first valve group 30 is closed and the second valve group 40 is opened, so that the residual liquid inside the filter device 100 is discharged from the pressure relief port 106, releasing the pressure inside the filter device 100, so as to facilitate the disassembly of the seal 50, and also reducing the possibility of liquid spraying out directly during the disassembly of the seal, thereby improving the cleanliness of the maintenance process.

[0101] The filter device 100 provided in this application embodiment can maintain the annular wall 21 and the magnetic suction member 22 included in the filter structure 20 separately according to the usage requirements. For example, when there are too many impurities on the annular wall 21, the annular wall 21 can be disassembled and reassembled by disassembling the second main body 112 to maintain it. When there are too many impurities on the magnetic suction member 22, the magnetic suction member 22 can be disassembled and reassembled by disassembling the sealing member 50 to maintain it.

[0102] Please see Figure 5 In some embodiments, along the axial direction of the filter cavity 201, the annular wall 21 has a first top end 211 and a first bottom end 212 facing opposite directions, and the magnetic attractor 22 has a second top end 220 and a second bottom end facing opposite directions. The distance between the first top end 211 and the first bottom end 212 is L1, and the distance between the second top end 220 and the first bottom end 212 is L2, where 1 / 3 ≤ (L2 / L1) ≤ 2 / 3.

[0103] As an example, the ratio of L2 to L1 can be, but is not limited to, 1 / 3, 5 / 12, 1 / 2, 7 / 12, 2 / 3, etc.

[0104] If the ratio of L2 to L1 is designed to be too small, i.e., L2 / L1≤1 / 3, the magnetic suction element 22 will be positioned too low in the filter chamber 201, weakening its ability to attract magnetic impurities in the liquid. Conversely, if the ratio of L2 to L1 is designed to be too large, i.e., L2 / L1≥2 / 3, the magnetic suction element 22 will be positioned too high in the filter chamber 201, reducing the filtration space for the liquid and affecting the filtration efficiency of the filter device 100. Therefore, by setting the ratio of L2 to L1 between 1 / 3 and 2 / 3, including both 1 / 3 and 2 / 3, it is beneficial to improve the magnetic suction effect of the magnetic suction element 22 on the magnetic substances in the liquid in the filter chamber 201, and also to provide sufficient flow space for the liquid in the filter chamber 201 to increase the flow rate of the liquid, thereby improving the filtration efficiency of the filter device 100.

[0105] Please see Figure 2 In some embodiments, the magnetic suction member 22 includes a magnetic suction part 221 and an assembly part 222 connected together. The magnetic suction part 221 and the assembly part 222 are made of different materials. The magnetic suction part 221 is disposed in the filter chamber 201.

[0106] Optionally, the assembly section 222 is disposed in the mounting channel 1031.

[0107] The magnetic suction part 221 can be made of a magnetic material to adsorb ferromagnetic impurities in the liquid. The assembly part 222 can be made of a non-magnetic material to fix and support the magnetic suction part 221. Alternatively, the assembly part 222 can be made of a material with a magnetic field smaller than that of the magnetic suction part 221. By setting it in the above manner, the magnetic suction part 22 can be assembled from the magnetic suction part 221 and the assembly part 222 of different materials, which helps to reduce the material cost of the magnetic suction part 22, thereby helping to reduce the overall cost of the filter device 100.

[0108] Please see Figures 1 to 5 In some embodiments, the first valve group 30 includes a first valve 31, the first valve 31 includes a first valve core 311, the first valve core 311 is rotatably disposed in the filter body 10, and is used to connect the liquid inlet 104 with the inlet 203 and the liquid outlet 105 with the cleaning chamber 202, or disconnect the connection between the liquid inlet 104 and the inlet 203 and the connection between the liquid outlet 105 and the cleaning chamber 202, so as to realize the synchronous opening and closing of the liquid inlet channel 101 and the liquid outlet channel 102.

[0109] By configuring the first valve group 30 to include the first valve 31, the opening and closing of the liquid inlet channel 101 and the liquid outlet channel 102 can be controlled simultaneously by rotating the first valve core 311, which helps to reduce operation steps and improve operation efficiency. Furthermore, by placing the first valve core 311 of the first valve 31 inside the filter body 10, it helps to reduce its external space occupation, thereby improving the structural compactness of the filter device 100 and reducing the area occupied by the filter device 100.

[0110] In some embodiments, the first valve 31 further includes a first valve stem 312, which passes through the filter body 10 and is convexly connected to the first valve core 311. The first valve stem 312 is used to drive the first valve core 311 to rotate relative to the filter body 10.

[0111] A portion of the first valve stem 312 is located outside the filter body 10, and the other portion extends into the interior of the filter body 10 to be connected to the first valve core 311 in a transmission manner, so that the operator can drive the first valve core 311 to rotate by moving or rotating the first valve stem 312.

[0112] Optionally, the first valve 31 is a first ball valve.

[0113] Please see Figure 6 In some embodiments, the first valve group 30 includes an inlet valve 32 and an outlet valve 33. The inlet valve 32 is connected to the side of the inlet port 104 away from the filter body 10 and is used to control the opening and closing of the inlet port 104. The outlet valve 33 is connected to the side of the outlet port 105 away from the filter body 10 and is used to control the opening and closing of the outlet port 105.

[0114] The inlet valve 32 is used to control the opening and closing of the inlet port 104 to realize the opening and closing of the inlet flow channel 101, and the outlet valve 33 is used to control the opening and closing of the outlet port 105 to realize the opening and closing of the outlet flow channel 102.

[0115] By configuring the first valve assembly 30 to include an external inlet valve 32 and an outlet valve 33, it is easier to maintain both of them and to reduce their occupation of the internal space of the filter body 10. This simplifies the structure of the filter body 10, facilitates the internal processing of the filter body 10, and improves the manufacturing efficiency of the filter device 100. Furthermore, by configuring it in the above way, inlet valves 32 or outlet valves 33 with different structures can be selected to be assembled with the filter body 10, which improves the versatility and flexibility of the filter device 100.

[0116] Furthermore, by configuring the first valve group 30 to include an independently controlled inlet valve 32 and an outlet valve 33, each valve can be individually selected based on the inlet or outlet pressure, flow rate, and specifications of the external pipeline.

[0117] Optionally, the inlet valve 32 is detachably connected to the filter body 10, and the outlet valve 33 is detachably connected to the filter body 10.

[0118] Please see Figures 1 to 5 In some embodiments, the second valve group 40 includes a second valve 41, the second valve 41 includes a second valve core 411, the second valve core 411 is rotatably disposed in the pressure relief channel 103, and is used to connect the pressure relief port 106 and the filter chamber 201 or disconnect the connection between the pressure relief port 106 and the filter chamber 201, so as to control the opening and closing of the pressure relief channel 103.

[0119] By configuring the second valve assembly 40 to include the second valve 41, the opening and closing of the pressure relief channel 103 can be controlled by rotating the second valve core 411. Furthermore, by placing the second valve core 411 inside the pressure relief channel 103, it is beneficial to reduce its external space occupation, thereby improving the structural compactness of the filter device 100 and reducing the area occupied by the filter device 100. In addition, when the residual liquid inside the filter device 100 is discharged through the pressure relief port 106, it is also convenient to connect the pressure relief port 106 to the connecting pipe.

[0120] Optionally, a second valve seat may be provided in the pressure relief channel 103, and the second valve core 411 is rotatably disposed in the second valve seat. As an example, a second valve seat may be provided in the drain channel 1032.

[0121] In some embodiments, the second valve 41 further includes a second valve stem 412, which passes through the filter body 10 and is throttle-connected to the second valve core 411. The second valve stem 412 is used to drive the second valve core 411 to rotate relative to the filter body 10.

[0122] A portion of the second valve stem 412 is located outside the filter body 10, and the other portion extends into the interior of the filter body 10 to be connected to the second valve core 411 in a transmission manner, so that the operator can drive the second valve core 411 to rotate by moving or rotating the second valve stem 412.

[0123] Optionally, the second valve 41 is a second ball valve.

[0124] When the first valve group 30 includes the first valve 31 and the second valve group 40 includes the second valve 41, the filter device 100 is used as follows: the first valve core 311 is opened, and the first valve core 311 is rotated by a first angle in a first direction to open the liquid inlet channel 101 and the liquid outlet channel 102, so that the liquid inlet 104 is connected to the inlet 203 (or the filter chamber 201) and the liquid outlet 105 is connected to the cleaning chamber 202; the second valve core 411 is closed, and the second valve core 411 is rotated by a second angle in a second direction to cut off the pressure relief channel 103 and thus disconnect the outlet 204 (or the filter chamber 201). The first valve core 311 is closed, causing it to rotate by a first angle in the opposite direction to the first direction, thereby cutting off the liquid inlet channel 101 and the liquid outlet channel 102. This disconnects the connection between the liquid inlet 104 and the inlet 203 (or the filter chamber 201), and the connection between the liquid outlet 105 and the cleaning chamber 202. The second valve group 40 is then opened to open the pressure relief channel 103, thereby connecting the outlet 204 (or the filter chamber 201) and the pressure relief port 106, thus putting the filter device 100 in a pressure relief state. Optionally, the first direction can be clockwise or counterclockwise, and the second direction can be clockwise or counterclockwise. The first direction can be the same as or different from the second direction; the first angle can be the same as or different from the second angle.

[0125] When the first valve group 30 includes an inlet valve 32 and an outlet valve, and the second valve group 40 includes a second valve 41, the filter device 100 is used as follows: the inlet valve 32 and the outlet valve 33 are opened respectively to open the inlet port 104 and the outlet port 105; the second valve core 411 is closed, and the second valve core 411 is rotated at a second angle in the second direction to cut off the pressure relief channel 103, thereby disconnecting the connection between the outlet 204 (or the filter chamber 201) and the pressure relief port 106, so that the filter device 100 is in the filtration state; the inlet valve 32 and the outlet valve 33 are closed respectively to close the inlet port 104 and the outlet port 105; the second valve group 40 is opened to conduct the pressure relief channel 103, thereby connecting the outlet 204 (or the filter chamber 201) and the pressure relief port 106, so that the filter device 100 is in the pressure relief state.

[0126] Please see Figures 1 to 5 In some embodiments, the filter device 100 further includes a protective component 60, which is disposed at the pressure relief port 106 of the filter body 10 and is used to cover the pressure relief port 106 or expose the pressure relief port 106.

[0127] When the filter device 100 is in the filtering state, the protective component 60 covers the pressure relief port 106. When the filter device 100 is in the depressurization state, the protective component 60 exposes the pressure relief port 106 to discharge the residual liquid inside the filter device 100. The filter device 100 provided in this application embodiment, by setting the protective component 60, can protect the pressure relief port 106, thereby reducing the possibility that external dust and other impurities will enter the pressure relief channel 103 through the pressure relief port 106 during normal use of the filter device 100. This can effectively reduce the probability of blockage of the pressure relief port 106 or the pressure relief channel 103, and allow the residual liquid inside the filter device 100 to be discharged smoothly through the pressure relief channel 103 and the pressure relief port 106, thereby improving the sealing and reliability of the filter device 100.

[0128] Optionally, the protective element 61 is used to cover the pressure relief port 106 or to expose the pressure relief port 106 to communicate with the connecting pipe. The residual liquid in the filter device 100 can be discharged by connecting the connecting pipe to the outside of the pressure relief port 106, so that the residual liquid in the filter device 100 can be discharged to the corresponding position through the connecting pipe. This helps to maintain the cleanliness of the filter device 100 and the device connected to the outlet 105 of the filter device 100.

[0129] In some embodiments, the protective component 60 includes a protective member 61 and a flexible connector 62. The protective member 61 is used to cover the pressure relief port 106 or expose the pressure relief port 106. The protective member 61 is connected to the filter body 10 via the flexible connector 62.

[0130] When the protective component 61 exposes the pressure relief port 106 for drainage and pressure relief, the protective component 61 can still be connected to the filter body 10 through the flexible connector 62, which helps to reduce the possibility of the protective component 61 being lost and also helps to improve the efficiency of reinstalling the protective component 61 back onto the filter body 10 after pressure relief.

[0131] The flexible connector 62 may include structures such as silicone, rubber, flexible plastic, and braided belt, and may also be a chain, enabling the flexible connector 62 to provide good flexibility and durability to enhance the overall reliability of the protective assembly 60.

[0132] like Figure 2 As shown, in some embodiments, the outer wall of the filter body 10 is provided with a positioning structure 70 at the pressure relief port 106, and the positioning structure 70 is used to connect with the connecting pipe.

[0133] The connecting pipe can be sleeved on the outer wall of the filter body 10 and connected with the positioning structure 70. By setting the positioning structure 70, it is easy to quickly align the connecting pipe with the pressure relief port 106, and also to quickly install the connecting pipe with the filter body 10, which helps to reduce assembly time, improve operating efficiency, and also helps to improve the connection strength and sealing performance between the connecting pipe and the filter body 10, reduce the possibility of liquid leakage between the pressure relief port 106 and the connecting pipe, and also reduce the possibility of loosening or leakage under high pressure or high flow rate liquid, which helps to improve the structural stability and practicality of the filter device 100.

[0134] As an example, the outer wall of the pressure relief section 12 is provided with a positioning structure 70 at the pressure relief port 106.

[0135] Optionally, the positioning structure 70 may include, but is not limited to, protrusions, grooves, annular steps, threaded structures, etc., provided on the outer periphery of the pressure relief part 12, so that the connecting pipe can be accurately aligned during the assembly process, avoiding leakage or loose connection caused by positional deviation.

[0136] In some embodiments, the positioning structure 70 includes a plurality of annular grooves provided on the outer wall of the pressure relief portion 12, the plurality of annular grooves being spaced apart.

[0137] Multiple annular grooves are spaced apart along the extension direction of the pressure relief section 12.

[0138] This design allows for the use of flexible connecting pipes such as rubber hoses, plastic corrugated pipes, and silicone tubes, facilitating quick installation and disassembly of both components.

[0139] In some embodiments, the positioning structure 70 includes a spiral groove provided on the outer wall of the pressure relief portion 12.

[0140] This design allows the connecting pipe to be a rigid connecting pipe commonly used in heat pump systems, such as a metal rigid pipe or a rigid plastic connecting pipe, and it is matched with the positioning structure 70 spiral.

[0141] The filtration device 100 provided in this application embodiment has a positioning structure 70 that can be an annular groove or a spiral groove. This can effectively improve the tightness of the connection between the positioning structure 70 and the connecting pipe, thereby reducing the risk of loosening caused by media impact. In addition, it can also improve the flexibility of use of the filtration device 100. Furthermore, it is convenient to process and manufacture the positioning structure 70 without affecting the space occupied by the filtration device 100.

[0142] In some embodiments, the protective component 60 is also used to cover the positioning structure 70 or expose the positioning structure 70 to achieve a mating connection with the connecting tube.

[0143] The protective component 60 can also protect the positioning structure 70, effectively reducing the possibility of bumps or damage to the filter device 100 during transportation, installation and use. At the same time, it can also isolate the positioning structure 70 from dust, water vapor and other impurities, which is conducive to improving the accuracy and service life of the positioning structure 70. This, in turn, helps to improve the connection strength and sealing performance after the positioning structure 70 is connected to the connecting pipe, and thus helps to improve the service life and reliability of the filter device 100.

[0144] Please see Figure 7 This application also provides a heating household hydraulic device 1, including a body 200 and a filter device 100 as described in any of the above embodiments, the filter device 100 being disposed within the body 200.

[0145] By improving the structure of the filter device 100, it is easier to disassemble and assemble the filter structure 20 when maintenance operations such as cleaning or replacing it are required. This improves the maintenance efficiency of the filter device 100 and, in turn, improves the circulation efficiency of the heating household hydraulic device 1.

[0146] This application also provides a heating, ventilation, and air conditioning (HVAC) device, including a heating end hydraulic device 1 as described in any of the above embodiments.

[0147] In addition, the HVAC equipment may also include a heat pump system, which can be connected to the body 200 in the hydraulic device 1 at the heating end, so that the liquid in the heat pump system can be filtered through the filter device 100 in the body 200.

[0148] Since HVAC equipment is a structure well known to those skilled in the art, the operating principle and other structures of HVAC equipment can be referred to relevant technologies, and this embodiment will not elaborate on them.

[0149] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A filtration device, characterized in that, include: The filter body has an inlet channel, an outlet channel and a pressure relief channel formed therein. The filter body is provided with an inlet port connected to the inlet channel, an outlet port connected to the outlet channel and a pressure relief port connected to the pressure relief channel. A filter structure is disposed within the filter body. The filter structure has a filter chamber and an annular wall surrounding the filter chamber. A cleaning chamber is formed between the annular wall and the filter body. The cleaning chamber is connected to the liquid outlet channel. The cleaning chamber and the filter chamber are in liquid communication through the annular wall. Along the axial direction of the filter chamber, the filter structure has an inlet and an outlet at opposite ends that are respectively connected to the filter chamber. The liquid inlet channel is connected to the filter chamber through the inlet, and the pressure relief channel is connected to the filter chamber through the outlet. The first valve group is connected to the filter body and is used to control the synchronous opening and closing of the liquid inlet channel and the liquid outlet channel; The second valve assembly, connected to the filter body, is used to control the opening and closing of the pressure relief channel.

2. The filtration device according to claim 1, characterized in that, Along the direction of gravity, the liquid inlet and the liquid outlet are both located above the pressure relief port, and the liquid inlet channel and the liquid outlet channel are both located above the pressure relief channel.

3. The filtration device according to claim 1, characterized in that, The filter body includes a main body and a pressure relief part. The filter structure is disposed in the main body. A cleaning chamber is formed between the annular wall and the main body. The first valve group is connected to the main body. The main body has an inlet channel and an outlet channel. The main body is provided with an inlet port, an outlet port and a first opening end that communicates with the filter chamber. The second valve assembly is connected to the pressure relief section, and the pressure relief section has a pressure relief flow channel formed therein. The pressure relief section is provided with a pressure relief port and a second opening end that are connected to the pressure relief flow channel. The main body and the pressure relief section are sealed and connected through the first opening end and the second opening end. The filter chamber is connected to the pressure relief flow channel through the outlet, the first opening end and the second opening end.

4. The filtration device according to claim 3, characterized in that, The first opening end is detachably connected to the second opening end.

5. The filtration device according to claim 4, characterized in that, One of the first open end and the second open end is fitted onto the other, and the first open end and the second open end are engaged by snap-fit ​​or threaded fit.

6. The filtration device according to claim 3, characterized in that, The main body includes a first main body and a second main body, which are detachably connected. The second main body is connected between the first main body and the pressure relief part. The first valve group is connected to the first main body. The first main body has the liquid inlet channel and the liquid outlet channel formed therein. The first main body is provided with the liquid inlet and the liquid outlet. The filter structure is disposed inside the second body, and the cleaning cavity is formed between the annular wall and the second body. The second body is provided with the first opening end.

7. The filtration device according to any one of claims 1 to 6, characterized in that, The filter structure further includes a magnetic suction element, at least a portion of which is disposed in the filter cavity.

8. The filtration device according to claim 7, characterized in that, One part of the magnetic suction element is disposed in the filter cavity, and the other part is disposed in the pressure relief channel.

9. The filtration device according to claim 8, characterized in that, The pressure relief channel includes a connected installation channel and a drainage channel. The installation channel and the drainage channel are intersected. The installation channel is connected to the filter chamber through the outlet. A part of the magnetic suction element is disposed in the filter chamber and another part is disposed in the installation channel. The second valve group is connected to the drainage channel.

10. The filtration device according to claim 9, characterized in that, The filter body is provided with an assembly port that communicates with the installation channel. The filter device also includes a sealing element that is detachably connected to the filter body and seals the assembly port.

11. The filtration device according to claim 7, characterized in that, Along the axial direction of the filter cavity, the annular wall has a first top end and a first bottom end facing opposite directions, the magnetic attractor has a second top end and a second bottom end facing opposite directions, the distance between the first top end and the first bottom end is L1, the distance between the second top end and the first bottom end is L2, and 1 / 3≤(L2 / L1)≤2 / 3.

12. The filtration device according to claim 7, characterized in that, The magnetic component includes a magnetic suction part and an assembly part connected together. The magnetic suction part and the assembly part are made of different materials. The magnetic suction part is disposed in the filter cavity.

13. The filtration device according to any one of claims 1 to 6, characterized in that, The first valve assembly includes a first valve, the first valve including a first valve core, the first valve core being rotatably disposed within the filter body, for connecting the liquid inlet to the inlet and the liquid outlet to the cleaning chamber, or disconnecting the connection between the liquid inlet and the inlet and the liquid outlet and the cleaning chamber.

14. The filtration device according to any one of claims 1 to 6, characterized in that, The first valve assembly includes an inlet valve and an outlet valve. The inlet valve is connected to the side of the inlet opposite to the filter body and is used to control the opening and closing of the inlet. The outlet valve is connected to the side of the outlet opposite to the filter body and is used to control the opening and closing of the outlet.

15. The filtration device according to any one of claims 1 to 6, characterized in that, The second valve assembly includes a second valve, the second valve includes a second valve core, the second valve core is rotatably disposed in the pressure relief channel, and is used to connect the pressure relief port and the outlet or disconnect the connection between the pressure relief port and the outlet.

16. The filtration device according to any one of claims 1 to 6, characterized in that, The filter device further includes a protective component located at the pressure relief port of the filter body, which is used to cover the pressure relief port or expose the pressure relief port.

17. The filtration device according to claim 16, characterized in that, The protective component includes a protective element and a flexible connector. The protective element is used to cover the pressure relief port or expose the pressure relief port. The protective element is connected to the filter body through the flexible connector.

18. A hydraulic device for heating households, characterized in that, include: Organism; The filtration device as described in any one of claims 1 to 17, wherein the filtration device is disposed within the body of the machine.

19. A heating, ventilation, and air conditioning (HVAC) device, characterized in that, Includes the heating household hydraulic device as described in claim 18.

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