Filter screen component and air conditioner

Abstract

The invention discloses a filter screen part and an air conditioner, the filter screen part is suitable for being detachably installed at an air inlet of the air conditioner, the filter screen part comprises a filter screen and a dismounting handle, and the dismounting handle is movably arranged on the filter screen and located on the outer side of the filter screen. According to the filter screen component, the disassembly and assembly handle is movably arranged on the filter screen and located on the outer side of the filter screen, a user can conveniently hold the filter screen component, force application is convenient, and then the filter screen component is convenient to disassemble and assemble.

Description

Technical Field

[0001] The invention relates to the technical field of air conditioning equipment, and in particular to a filter screen component and an air conditioner. Background Art

[0002] In the related art, the handle for disassembling and assembling the filter component at the air inlet of the air conditioner is mainly a buckle groove handle, which is inconvenient to hold, resulting in difficulty in disassembling and assembling the filter component. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a filter net component, by providing a disassembly handle on the filter net, the disassembly handle can be movably arranged on the filter net and located on the outside of the filter net, so that the user can hold the disassembly handle and apply force, thereby facilitating the disassembly of the filter net component.

[0004] The present invention also provides an air conditioner having the filter screen component.

[0005] According to the filter component of the first aspect of the present invention, the filter component is suitable for being detachably installed at the air inlet of the air conditioner, and the filter component comprises: a filter; and a disassembly handle, wherein the disassembly handle is movably provided on the filter and is located on the outside of the filter.

[0006] According to the filter net component of the embodiment of the present invention, a disassembly handle is provided on the filter net, and the disassembly handle is movably provided on the filter net and located on the outside of the filter net, so that the user can hold the disassembly handle and apply force, thereby facilitating the disassembly of the filter net component.

[0007] According to some embodiments of the present invention, the disassembly handle is rotatably provided on the filter screen.

[0008] According to some embodiments of the present invention, the disassembly and assembly handle has a locked state and an unlocked state; in the locked state, the disassembly and assembly handle is fixed to the filter net by a locking structure; in the unlocked state, the disassembly and assembly handle can move relative to the filter net.

[0009] According to some optional embodiments of the present invention, the locking structure includes a snap-fit ​​structure.

[0010] In some optional embodiments of the present invention, the buckle structure includes a first buckle and a second buckle suitable for being engaged with each other, the first buckle is arranged on the filter net, and the second buckle is arranged on the disassembly and assembly handle; wherein, in the locked state, the second buckle is engaged with the first buckle; and in the unlocked state, the second buckle is disengaged from the first buckle.

[0011] According to some embodiments of the present invention, the disassembly handle is detachably provided on the filter screen.

[0012] According to some embodiments of the present invention, an air inlet grille is provided at the air inlet, and the filter component is located on the inner side of the air inlet grille; a disassembly and assembly port is formed on the casing of the air conditioner, the disassembly and assembly port is located on one side of the air inlet, the disassembly and assembly handle is located on a side of the filter close to the disassembly and assembly port and opposite to the disassembly and assembly port, and the filter component is suitable for being installed on the inner side of the air inlet grille through the disassembly and assembly port and suitable for being taken out through the disassembly and assembly port.

[0013] According to some embodiments of the present invention, the filter includes a filter body and a handle fixing seat provided on the filter body, and the disassembly handle is movably provided on the handle fixing seat.

[0014] According to some optional embodiments of the present invention, the handle fixing seat is detachably connected to the filter body.

[0015] In some optional embodiments of the present invention, the disassembly and assembly handle has a locked state and an unlocked state; in the locked state, the disassembly and assembly handle is received in the outer peripheral side of the handle fixing seat, and the disassembly and assembly handle is locked to the handle fixing seat by a locking structure; in the unlocked state, the disassembly and assembly handle can move relative to the filter net.

[0016] In some optional embodiments of the present invention, the handle fixing seat includes a fixing seat body and a connecting flange, the connecting flange is arranged on the outer peripheral side of the fixing seat body, the disassembly and assembly handle is rotatably connected to the fixing seat body, the connecting flange is connected to the filter body, and the locking structure includes a snap structure, the snap structure includes a first snap arranged on the connecting flange and a second snap arranged on the disassembly and assembly handle; in the locked state, the disassembly and assembly handle is stored on the outer peripheral side of the fixing seat body, and the second snap is snapped with the first snap; in the unlocked state, the second snap is disengaged from the first snap.

[0017] According to some optional embodiments of the present invention, the filter body includes a mesh body and a mounting seat, the mounting seat is arranged on one side of the mesh body, and the handle fixing seat is arranged on the mounting seat.

[0018] In some optional embodiments of the present invention, the mounting seat is detachably connected to the mesh body.

[0019] In some optional embodiments of the present invention, the mounting seat is connected to the mesh body by snap-on connection.

[0020] In some optional embodiments of the present invention, a third buckle is provided on one of the mounting seat and the mesh body and the other is provided with a buckle hole engaged with the third buckle, and the third buckle is suitable for being engaged with the buckle hole along the thickness direction of the mesh body; a mating groove is also formed on the mounting seat, and the mesh body has a mating protrusion, and the mating protrusion is accommodated in the mating groove along the extension direction of the mesh body.

[0021] In some optional embodiments of the present invention, a disassembly opening is formed on the casing of the air conditioner, the disassembly opening is located on one side of the air inlet, and the mounting seat covers the disassembly opening.

[0022] In some optional embodiments of the present invention, the mounting base is suitable for being snap-connected with the housing.

[0023] In some optional embodiments of the present invention, a fourth buckle and a fifth buckle are formed on the casing, and the fourth buckle and the fifth buckle are located on opposite sides of the disassembly and assembly port, and a sixth buckle and a slot are formed on the mounting base, and the sixth buckle is suitable for being connected with the fourth buckle, and the slot is suitable for being connected with the fifth buckle.

[0024] An air conditioner according to an embodiment of the second aspect of the present invention comprises: a casing, formed with an air inlet and an air outlet; a filter component according to the embodiment of the first aspect of the present invention, the filter component being detachably mounted on the air inlet; and an air supply assembly disposed in the casing.

[0025] According to the air conditioner of the embodiment of the present invention, by providing the above-mentioned filter component, the disassembly handle is movably provided on the filter and located outside the filter, which is convenient for the user to hold the disassembly handle and apply force, thereby facilitating the disassembly of the filter component.

[0026] According to some embodiments of the present invention, the filter net component can be pulled out along the circumference of the casing, and the casing is formed with a first guide limit groove and a second guide limit groove which are arranged at intervals along the length direction of the casing. In the length direction of the casing, one end of the filter net is accommodated in the first guide limit groove, and the other end of the filter net is accommodated in the second guide limit groove.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] Figure 1is a schematic structural diagram of an air-conditioning indoor unit according to some embodiments of the present invention;

[0030] Figure 2 yes Figure 1 Exploded view of the indoor unit of the air conditioner;

[0031] Figure 3 is a schematic diagram of the cooperation between the filter screen component and the rear box according to some embodiments of the present invention, wherein the disassembly handle is in a locked state;

[0032] Figure 4 is along Figure 3 Sectional view along line AA;

[0033] Figure 5 yes Figure 4 The enlarged view of point B in the middle;

[0034] Figure 6 yes Figure 3 Schematic diagram of the coordination between the middle filter component and the rear box, with the disassembly handle in the unlocked state;

[0035] Figure 7 yes Figure 6 Enlarged view of point C in the middle;

[0036] Figure 8 yes Figure 6 Exploded view of the middle filter component and the rear box;

[0037] Fig. 9 yes Figure 8 Schematic diagram of the structure of the middle and rear box;

[0038] Fig.10 yes Fig. 9 The enlarged view of point D in the middle;

[0039] Fig.11 yes Figure 8 A schematic diagram of the structure of the filter screen component;

[0040] Fig.12 yes Fig.11 Enlarged view of point E in the middle;

[0041] Fig.13 yes Fig.11 Exploded view of the middle filter component;

[0042] Fig.14 yes Fig.11 A schematic diagram of the filter screen component from another angle;

[0043] Fig.15 yes Fig.14 The enlarged view of F in the middle;

[0044] Fig.16 yes Fig.14 Schematic diagram of the coordination between the middle mounting seat, the handle fixing seat and the disassembly and assembly of the handle;

[0045] Fig.17 is along Fig.16 Sectional view of the mid-GG line;

[0046] Fig.18 yes Fig.17 The enlarged view of the M in the middle;

[0047] Fig.19 yes Fig.16 A schematic diagram of the structure of the middle mounting seat;

[0048] Fig. 20 yes Fig.19 The enlarged view of the N position in the middle;

[0049] Fig.21 yes Fig.16 A schematic diagram of another angle of the middle mounting seat;

[0050] Fig. 22 yes Fig.21 The enlarged view of P in the middle;

[0051] Fig.23 is a schematic diagram of the cooperation between the disassembly handle and the handle fixing seat according to some embodiments of the present invention, wherein the disassembly handle is in an unlocked state;

[0052] Fig.24 yes Fig.23 A schematic diagram of the structure of the middle handle fixing seat;

[0053] Fig.25 yes Fig.24 A schematic diagram of the middle handle fixing base from another angle;

[0054] Fig.26 yes Fig.23 A schematic diagram of the structure of the middle disassembly and assembly handle;

[0055] Fig. 27 yes Fig.26 Schematic diagram of the disassembly handle from another angle.

[0056] Reference numerals:

[0057] 100. Air conditioner indoor unit;

[0058] 1. Casing; 11. Rear box; 111. Air inlet; 112. Air inlet grille; 113. Disassembly and assembly port; 114. First guide limit slot; 115. Second guide limit slot; 116. Fourth buckle; 117. Fifth buckle; 118. Installation guide surface; 13. Air outlet frame; 131. Air outlet; 14. Front panel; 15. Base;

[0059] 2. Filter screen component; 20. Filter screen; 21. Filter screen body; 210. Net body; 211. Clamp hole; 212. Matching convex part; 213. Mounting lug; 22. Mounting seat; 220. Accommodating groove; 221. Third buckle; 222. Matching groove; 223. Sixth buckle; 224. Clamp groove; 225. Third reinforcing rib; 23. Handle fixing seat; 231. Fixing seat body; 232. Connecting flange; 233. Second groove; 234. Second reinforcing rib; 24. Disassembly and assembly handle; 241. First groove; 242. First reinforcing rib;

[0060] 3. Locking structure; 31. Buckle structure; 311. First buckle; 312. Second buckle; 32. Positioning column; 33. First fixing hole; 34. Positioning hole; 35. Second fixing hole; 36. Rotating shaft hole; 37. Rotating shaft;

[0061] 4. Air supply assembly; 41. First fan assembly; 42. Second fan assembly; 5. Heat exchanger assembly. DETAILED DESCRIPTION

[0062] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0063] The following describes a filter element 2 according to an embodiment of the present invention with reference to the accompanying drawings.

[0064] Reference Figure 3-Figure 6 According to the filter component 2 of the first embodiment of the present invention, the filter component 2 is suitable for being detachably mounted at the air inlet 111 of the air conditioner, and the filter component 2 can filter dust and other impurities in the airflow entering the air conditioner from the air inlet 111 to improve the air quality. By detachably mounting the filter component 2 at the air inlet 111 of the air conditioner, the filter component 2 can be easily maintained, disassembled, cleaned or replaced.

[0065] For example, the air conditioner may be a split floor-standing air conditioner, which may include an air conditioner indoor unit 100 and an air conditioner outdoor unit. The air conditioner indoor unit 100 has an air inlet 111 , and the filter component 2 may be detachably disposed at the air inlet 111 of the air conditioner indoor unit 100 .

[0066] Reference Figure 6 and Figure 7The filter component 2 includes a filter 20 and a disassembly handle 24. The disassembly handle 24 is movably provided on the filter 20, and the disassembly handle 24 is located on the outside of the filter 20. The outside of the filter 20 refers to the side of the filter 20 that faces away from the air inlet 111. For example, the disassembly handle 24 is located on the air inlet side of the filter 20, which is convenient for the user to hold the disassembly handle 24 and disassemble the filter 20. The airflow can pass through the mesh on the filter 20. The air inlet side of the filter 20 refers to the side where the airflow passes through, and the air outlet side of the filter 20 refers to the side where the airflow passes through.

[0067] The filter in the related art is usually provided with a buckle groove handle. It is understandable that the buckle groove handle is fixed relative to the filter, and it is difficult to adjust different directions according to the user's usage habits. It is inconvenient for the user to hold and apply force.

[0068] The disassembly and assembly handle 24 is movably provided on the filter 20, and the disassembly and assembly handle 24 is located on the outside of the filter 20. The user can adjust the disassembly and assembly handle 24 according to his own usage habits. The disassembly and assembly handle 24 can be adjusted in different directions to facilitate the user to hold the disassembly and assembly handle 24 and apply force, thereby facilitating the disassembly and assembly of the filter component 2.

[0069] According to the filter component 2 of the first aspect of the present invention, a disassembly handle 24 is provided on the filter 20. The disassembly handle 24 is movably provided on the filter 20 and is located on the outside of the filter 20, so that the user can hold the disassembly handle 24 for applying force, thereby facilitating the disassembly of the filter component 2.

[0070] Reference Figure 6 and Figure 7 According to some embodiments of the present invention, the disassembly handle 24 is rotatably provided on the filter 20, and the state of the disassembly handle 24 can be flexibly adjusted. For example, the disassembly handle 24 can be adjusted to different angles and directions to facilitate the user to hold the disassembly handle 24 and to facilitate the disassembly of the filter component 2 to meet the different needs of the user.

[0071] Reference Figure 3-Figure 7 According to some embodiments of the present invention, the disassembly and assembly handle 24 has a locked state and an unlocked state; in the locked state, the disassembly and assembly handle 24 is fixed to the filter net 20 by the locking structure 3, which can facilitate the storage of the disassembly and assembly handle 24 and ensure the stability of the installation of the disassembly and assembly handle 24 on the filter net 20; in the unlocked state, the disassembly and assembly handle 24 can move relative to the filter net 20, which is convenient for the user to hold the disassembly and assembly handle 24 and facilitate the disassembly and assembly of the filter net component 2.

[0072] Reference Figure 16-Figure 18According to some optional embodiments of the present invention, the locking structure 3 includes a snap structure 31, and the disassembly and assembly handle 24 is fixed to the filter net 20 through the snap structure 31. The installation stability of the disassembly and assembly handle 24 is relatively strong. In addition, the disassembly and assembly handle 24 is fixed to the filter net 20 through the snap structure 31, and the structure is relatively simple, which facilitates the switching of the disassembly and assembly handle 24 between the locked state and the unlocked state.

[0073] Reference Figure 7 and Figure 15-18 In some optional embodiments of the present invention, the buckle structure 31 includes a first buckle 311 and a second buckle 312 adapted to be engaged with each other, the first buckle 311 is provided on the filter 20, and the second buckle 312 is provided on the disassembly handle 24; wherein, in the locked state, the second buckle 312 is engaged with the first buckle 311; in the unlocked state, the second buckle 312 is disengaged from the first buckle 311. By engaging the second buckle 312 with the first buckle 311, the disassembly handle 24 can be fixed to the filter 20; by disengaging the second buckle 312 from the first buckle 311, the disassembly handle 24 can move relative to the filter 20. The buckle structure 31 is relatively simple, so that the operation of switching the disassembly handle 24 between the locked state and the unlocked state is relatively simple.

[0074] Reference Figure 7 According to some embodiments of the present invention, the disassembly handle 24 is detachably provided on the filter 20. After long-term use, the disassembly handle 24 may be damaged or malfunction. By detachably providing the disassembly handle 24 on the filter 20, it is convenient to install or disassemble the disassembly handle 24, and it is convenient to maintain or replace the disassembly handle 24.

[0075] Reference Figure 6-Figure 8 According to some embodiments of the present invention, an air inlet grille 112 is provided at the air inlet 111, and the filter component 2 is located at the inner side of the air inlet grille 112. For example, the outer side of the air inlet grille 112 refers to the air inlet side of the air inlet grille 112, and the inner side of the air inlet grille 112 refers to the air outlet side of the air inlet grille 112, wherein the filter component 2 is located at the air outlet side of the air inlet grille 112. Since the filter component 2 is located at the inner side of the air inlet grille 112, the air inlet grille 112 can protect the filter component 2 and reduce the squeezing or wear of the filter component 2 by external force; and the air inlet grille 112 can block some impurities such as dust from entering the air conditioner from the air inlet 111, and the filter 20 can further filter the air at the air inlet 111, which can further improve the air quality.

[0076] Reference Figure 6 and Figure 8The housing 1 of the air conditioner is provided with a disassembly opening 113, which is located at one side of the air inlet 111. The disassembly opening 113 is located at a side of the filter 20 close to the disassembly opening 113, and the disassembly opening 113 is opposite to the disassembly opening 113. The filter component 2 is suitable for being installed on the inner side of the air inlet grille 112 through the disassembly opening 113, and the filter component 2 is suitable for being taken out through the disassembly opening 113. For example, the air inlet 111 extends in the up-down direction, the length direction of the air inlet 111 is the up-down direction, the width direction of the air inlet 111 is perpendicular to the up-down direction, and the disassembly opening 113 is located at one side of the width direction of the air inlet 111.

[0077] The disassembly handle 24 is located on the side of the filter 20 close to the disassembly opening 113 and opposite to the disassembly opening 113, and the disassembly handle 24 is opposite to the disassembly opening 113, so that it is convenient for the user to apply force when holding the disassembly handle 24, thereby facilitating the installation or removal of the filter component 2 through the disassembly opening 113. The user can hold the disassembly handle 24 and push the disassembly handle 24 in the direction from the disassembly opening 113 to the air inlet 111, so that the filter component 2 can be installed to the inner side of the air inlet grille 112 through the disassembly opening 113; the user can hold the disassembly handle 24 and pull the disassembly handle 24 in the direction from the air inlet 111 to the disassembly opening 113, so that the filter component 2 can be removed through the disassembly opening 113. In addition, the disassembly handle 24 is located on the side of the filter 20 close to the disassembly opening 113 and opposite to the disassembly opening 113, so that the wind blocking area of ​​the disassembly handle 24 at the air inlet 111 can be reduced, so as to ensure the air intake at the air inlet 111 of the air conditioner.

[0078] Reference Figure 13-Figure 16 According to some embodiments of the present invention, the filter 20 includes a filter body 21 and a handle fixing seat 23, the handle fixing seat 23 is provided on the filter body 21, and the disassembly handle 24 is movably provided on the handle fixing seat 23. Compared with providing a buckle groove handle on the handle fixing seat 23, by movably providing the disassembly handle 24 on the handle fixing seat 23, it is convenient for the user to hold the disassembly handle 24, and the size of the handle fixing seat 23 can be made small, reducing the wind blocking of the handle fixing seat 23, and ensuring the air intake at the air inlet 111 of the air conditioner.

[0079] Reference Fig.13 According to some optional embodiments of the present invention, the handle fixing base 23 is detachably connected to the filter body 21. After the filter element 2 is used for a long time, the filter body 21 is prone to accumulate a lot of dust. The handle fixing base 23 is detachably connected to the filter body 21, which makes it convenient to clean the filter body 21, maintain or replace the handle fixing base 23, and maintain or replace the filter body 21.

[0080] Reference Figure 15-18In some optional embodiments of the present invention, the disassembly and assembly handle 24 has a locked state and an unlocked state; in the locked state, the disassembly and assembly handle 24 is stored in the outer peripheral side of the handle fixing seat 23, and the disassembly and assembly handle 24 is locked to the handle fixing seat 23 by the locking structure 3, which can facilitate the storage of the disassembly and assembly handle 24, ensure the stability of the disassembly and assembly handle 24, and make the overall structure of the disassembly and assembly handle 24 and the handle fixing seat 23 compact; in the unlocked state, the disassembly and assembly handle 24 can move relative to the filter net 20, which is convenient for the user to hold the disassembly and assembly handle 24 and facilitate the disassembly and assembly of the filter net component 2.

[0081] Reference Figure 16-Figure 18 In some optional embodiments of the present invention, the handle fixing seat 23 includes a fixing seat body 231 and a connecting flange 232, the connecting flange 232 is arranged on the outer peripheral side of the fixing seat body 231, the disassembly handle 24 is rotatably connected to the fixing seat body 231, and the connecting flange 232 is connected to the filter body 21, so that the disassembly handle 24 can be rotatably connected to the filter body 21.

[0082] The locking structure 3 includes a buckle structure 31, and the buckle structure 31 includes a first buckle 311 and a second buckle 312. The first buckle 311 is arranged on the connecting flange 232, and the second buckle 312 is arranged on the disassembly handle 24. Fig.25 and Fig. 27 A first groove 241 is formed on one side of the disassembly handle 24 in the thickness direction, which can help reduce the weight of the disassembly handle 24; a second buckle 312 is formed on the side wall of the first groove 241; a plurality of first reinforcing ribs 242 are arranged at intervals in the first groove 241, which helps to enhance the structural strength of the disassembly handle 24 and prevent the disassembly handle 24 from being easily deformed or broken. A second groove 233 is formed in the fixing seat body 231, and a plurality of second reinforcing ribs 234 are arranged at intervals in the second groove 233, which can help reduce the weight of the fixing seat body 231 and ensure the structural strength of the fixing seat body 231.

[0083] In the locked state, the disassembly handle 24 is received in the outer peripheral side of the fixing seat body 231, and the second buckle 312 is engaged with the first buckle 311; in the unlocked state, the second buckle 312 is disengaged from the first buckle 311. The disassembly handle 24 can be fixed to the handle fixing seat 23 by engaging the second buckle 312 with the first buckle 311; the disassembly handle 24 can move relative to the handle fixing seat 23 by disengaging the second buckle 312 from the first buckle 311. The buckle structure 31 is relatively simple, so that the operation of switching the disassembly handle 24 between the locked state and the unlocked state is relatively simple.

[0084] For example, refer to Fig. 20 and Figure 23-Figure 27According to some specific embodiments of the present invention, the handle fixing seat 23 includes a fixing seat body 231 and a connecting flange 232, the connecting flange 232 is arranged on the outer peripheral side of the fixing seat body 231, the disassembly handle 24 is rotatably connected to the fixing seat body 231, and the connecting flange 232 is detachably connected to the filter body 21. The filter body 21 is provided with a positioning column 32 and a first fixing hole 33, and the connecting flange 232 is formed with a positioning hole 34 and a second fixing hole 35, the positioning hole 34 corresponds to the positioning column 32, and the positioning column 32 is suitable for being inserted into the positioning hole 34 to position the handle fixing seat 23 on the filter body 21; the second fixing hole 35 corresponds to the first fixing hole 33, and the fastener is suitable for being inserted into the second fixing hole 35 and the first fixing hole 33 to fix the handle fixing seat 23 to the filter body 21. The fixing seat body 231 protrudes from the filter screen 20 body, and the disassembly and assembly handle 24 is U-shaped. At least part of the fixing seat body 231 is accommodated in the U-shaped notch of the disassembly and assembly handle 24. A rotating shaft hole 36 is formed at both upper and lower ends of the fixing seat body 231. A rotating shaft 37 corresponding to the rotating shaft hole 36 is formed on the disassembly and assembly handle 24. The rotating shaft 37 is suitable for being inserted into the rotating shaft hole 36, and the rotating shaft 37 can rotate in the rotating shaft hole 36, so that the disassembly and assembly handle 24 is rotatably connected to the fixing seat body 231.

[0085] Reference Fig.13 and Fig.14 According to some optional embodiments of the present invention, the filter body 21 includes a mesh body 210 and a mounting seat 22, the mounting seat 22 is arranged on one side of the mesh body 210, and the handle fixing seat 23 is arranged on the mounting seat 22. The airflow at the air inlet 111 can pass through the mesh body 210 and enter the air conditioner, and the handle fixing seat 23 is arranged on the mounting seat 22 to prevent the handle fixing seat 23 from blocking the wind. For example, the handle fixing seat 23 is arranged on one side of the mounting seat 22 in the thickness direction, and a plurality of third reinforcing ribs 225 are arranged on the other side of the mounting seat 22 in the thickness direction, and the plurality of third reinforcing ribs 225 are arranged at intervals along the length direction of the mounting seat 22, so that the structural strength of the mounting seat 22 can be enhanced.

[0086] Reference Fig.11 and Fig.12 In some optional embodiments of the present invention, the mounting base 22 is detachably connected to the mesh body 210. After the filter body 21 is used for a long time, the mesh body 210 is prone to accumulate a lot of dust. The mounting base 22 is detachably connected to the mesh body 210, which makes it convenient to clean the mesh body 210, maintain or replace the mesh body 210, and maintain or replace the mounting base 22.

[0087] Reference Fig.12In some optional embodiments of the present invention, the mounting seat 22 is snap-connected to the mesh body 210, which is convenient for cleaning, maintenance or replacement of the mesh body 210, and also convenient for maintenance or replacement of the mounting seat 22, and is easy to operate.

[0088] Reference Fig.12 In some optional embodiments of the present invention, one of the mounting seat 22 and the net body 210 is provided with a third buckle 221 and the other is provided with a clamping hole 211 clamped with the third buckle 221, and the third buckle 221 is suitable for clamping with the clamping hole 211 along the thickness direction of the net body 210. One of the mounting seat 22 and the net body 210 is provided with the third buckle 221 and the other is provided with a clamping hole 211 clamped with the third buckle 221, which may include the following situations: the mounting seat 22 is provided with the third buckle 221, and the net body 210 is provided with a clamping hole 211 matched with the third buckle 221; or the net body 210 is provided with the third buckle 221, and the mounting seat 22 is provided with a clamping hole 211 matched with the third buckle 221. The third buckle 221 is suitable for clamping with the clamping hole 211 along the thickness direction of the net body 210, so as to realize the clamping connection between the mounting seat 22 and the net body 210, and the connection structure is relatively simple.

[0089] Continue to refer to Fig.12 The mounting seat 22 is also formed with a matching groove 222, and the mesh 210 has a matching protrusion 212, which is accommodated in the matching groove 222 along the extension direction of the mesh 210. The matching groove 222 can limit the mesh 210 and enhance the stability of the matching between the mounting seat 22 and the mesh 210. For example, the mesh 210 extends in the up-down direction, and the upper side or the lower side of the matching groove 222 is blocked to limit the matching protrusion 212 in the up-down direction, so that the mesh 210 can be limited in the up-down direction.

[0090] For example, refer to Fig.12 According to some specific embodiments of the present invention, the net body 210 has a mounting lug 213, and a clamping hole 211 is formed on the mounting lug 213; a receiving groove 220 is formed on the mounting seat 22, and a third clamping buckle 221 is formed on the bottom wall of the receiving groove 220, and the mounting lug 213 is suitable for being received in the receiving groove 220, and the third clamping buckle 221 is engaged with the clamping hole 211. There are a plurality of mounting lugs 213 arranged at intervals in the up-down direction, and the upper and lower ends of the mounting lugs 213 abut against the side walls of the receiving groove 220 to realize the upper limit position of the mounting lugs 213 in the up-down direction, thereby realizing the upper limit position of the net body 210 by the mounting seat 22 in the up-down direction.

[0091] Reference Figure 3 , Figure 6 and Figure 8In some optional embodiments of the present invention, a disassembly opening 113 is formed on the casing 1 of the air conditioner, and the disassembly opening 113 is located on one side of the air inlet 111. The mounting seat 22 covers the disassembly opening 113 to prevent the air flow in the casing 1 from leaking out from the disassembly opening 113, and can prevent dust outside the casing 1 from entering the casing 1 through the disassembly opening 113, so as to avoid affecting the normal operation of the internal components of the casing 1.

[0092] Reference Figure 4-Figure 5 In some optional embodiments of the present invention, the mounting seat 22 is suitable for being snap-connected with the casing 1, so that the filter component 2 can be snap-connected with the casing 1, so that the connection stability between the filter component 2 and the casing 1 is relatively strong, and it is convenient to disassemble and assemble, and the filter component 2 can be maintained or replaced.

[0093] Reference Figure 5 In some optional embodiments of the present invention, a fourth buckle 116 and a fifth buckle 117 are formed on the housing 1, and the fourth buckle 116 and the fifth buckle 117 are located on opposite sides of the disassembly and assembly opening 113, for example, the fourth buckle 116 and the fifth buckle 117 are located on opposite sides of the width direction of the disassembly and assembly opening 113. A sixth buckle 223 and a slot 224 are formed on the mounting seat 22, and the sixth buckle 223 is suitable for being engaged with the fourth buckle 116, and the slot 224 is suitable for being engaged with the fifth buckle 117. By engaging the sixth buckle 223 with the fourth buckle 116 and the slot 224 with the fifth buckle 117, the mounting seat 22 can be engaged with the housing 1, thereby achieving the engagement of the filter screen component 2 with the housing 1, and further enhancing the connection stability between the filter screen component 2 and the housing 1.

[0094] For example, refer to Figure 5 A mounting guide surface 118 is formed on the side of the fourth buckle 116 facing the outside of the housing 1. During the process of installing the mounting seat 22 to the disassembly and assembly port 113, that is, during the process of the sixth buckle 223 being engaged with the fourth buckle 116, the sixth buckle 223 cooperates with the mounting guide surface 118 and the sixth buckle 223 is suitable for moving along the mounting guide surface 118, and the mounting guide surface 118 guides the movement of the sixth buckle 223; when the engagement of the sixth buckle 223 with the fourth buckle 116 is completed, the sixth buckle 223 disengages from the mounting guide surface 118.

[0095] Reference Figure 1 and Figure 2 The air conditioner according to the second embodiment of the present invention comprises: a casing 1, an air supply assembly 4 and a filter component 2 according to the first embodiment of the present invention, the casing 1 is formed with an air inlet 111 and an air outlet 131; the filter component 2 is detachably mounted on the air inlet 111; the air supply assembly 4 is arranged in the casing 1.

[0096] For example, the air conditioner can be a split floor-standing air conditioner, and the air conditioner can include an air conditioner indoor unit 100 and an air conditioner outdoor unit, wherein the air conditioner indoor unit 100 is a cabinet unit, and the air conditioner indoor unit 100 includes the above-mentioned housing 1, filter screen component 2 and air supply component 4. The housing 1 includes a rear box 11, a top cover, an air outlet frame 13, a front panel 14 and a base 15, and an air inlet 111 is formed on the rear box 11; the air outlet frame 13 is located on the upper side of the front panel 14, and the air outlet 131 is formed on the air outlet frame 13; the top cover is arranged on the top of the air outlet frame 13 and the rear box 11, and the base 15 is located on the bottom of the front panel 14 and the rear box 11. The air supply component 4 is located between the air inlet 111 and the air outlet 131, and a heat exchanger component 5 is also arranged in the housing 1 of the air conditioner indoor unit, and the heat exchanger component 5 is located in front of the air inlet 111, and the air supply component 4 is located in front of the heat exchanger component 5.

[0097] For example, refer to Figure 2 The housing 1 has a first installation cavity and a second installation cavity arranged up and down, and the second installation cavity can be located at the lower side of the first installation cavity. The air supply component 4 includes a first fan component 41 and a second fan component 42. The first fan component 41 is located in the first installation cavity, and the first fan component 41 includes a duct volute and a wind wheel arranged in the duct volute. When the wind wheel is working, a negative pressure is formed at the air inlet 111. The airflow at the air inlet 111 enters the housing 1 after being filtered by the filter component 2, and the airflow in the housing 1 can exchange heat with the heat exchanger component 5. The airflow after heat exchange can be blown out through the air outlet 131 and blown into the room to cool down or heat up the room. The second fan component 42 is arranged in the second installation cavity, and an air processing module is also arranged in the second installation cavity. The second fan component 42 can discharge the introduced outdoor air into the room after being processed by the air processing module. The second fan component 42 can also discharge the indoor air into the room after being processed by the air processing module. This can avoid long-term circulation of indoor air and improve the indoor air quality.

[0098] According to the air conditioner of the embodiment of the present invention, by setting the above-mentioned filter component 2, the disassembly handle 24 can be movably arranged on the filter 20 and located on the outside of the filter 20, so that the user can hold the disassembly handle 24 and apply force, thereby facilitating the disassembly of the filter component 2.

[0099] Reference Figure 6-Figure 8According to some embodiments of the present invention, the filter screen component 2 can be pulled out along the circumference of the housing 1, and the housing 1 is provided with a first guide limit groove 114 and a second guide limit groove 115 which are arranged at intervals along the length direction of the housing 1. In the length direction of the housing 1, one end of the filter screen 20 is accommodated in the first guide limit groove 114, and the other end of the filter screen 20 is accommodated in the second guide limit groove 115. The first guide limit groove 114 and the second guide limit groove 114 guide the installation process of the filter screen 20 on the housing 1, ensuring that the filter screen 20 can be installed smoothly; and the first guide limit groove 114 and the second guide limit groove 114 can limit the two ends of the filter screen 20 in the length direction, so as to improve the installation stability of the filter screen 20 on the housing 1.

[0100] For example, refer to Figure 8 The first guide limit groove 114 and the second guide limit groove 115 are both located on the rear box body 11, and can be in the up-down direction in the length direction of the housing 1. The first guide limit groove 114 is located above the second guide limit groove 115. The upper end of the filter 20 is accommodated in the first guide limit groove 114, and the lower end of the filter 20 is accommodated in the second guide limit groove 115. After the filter 20 is installed on the housing 1, the upper end of the net body 210 is accommodated in the first guide limit groove 114, and the lower end of the net body 210 is accommodated in the second guide limit groove 115. The mounting seat 22 covers the disassembly and assembly port 113, and the sixth buckle 223 on the mounting seat 22 is engaged with the fourth buckle 116 on the housing 1, and the slot 224 on the mounting seat 22 is engaged with the fifth buckle 117 on the housing 1.

[0101] Refer to the following Figure 1-Figure 27 An air conditioner according to an embodiment of the present invention is described.

[0102] Reference Figure 1-Figure 27 In this embodiment, the air conditioner is a split floor-standing air conditioner, and the air conditioner includes an air conditioner indoor unit 100 and an air conditioner outdoor unit, wherein the air conditioner indoor unit 100 is a cabinet unit, and the air conditioner indoor unit 100 includes a casing 1, a filter component 2 and an air supply assembly 4. The casing 1 includes a rear box 11, a top cover, an air outlet frame 13, a front panel 14 and a base 15. An air inlet 111 is formed on the rear box 11, an air inlet grille 112 is provided at the air inlet 111, and an air outlet 131 is formed on the air outlet frame 13; the top cover is provided on the top of the air outlet frame 13 and the rear box 11, and the base 15 is located at the bottom of the front panel 14 and the rear box 11. The air supply assembly 4 is provided in the casing 1, and the filter component 2 is detachably installed at the air inlet 111 of the casing 1, and the filter component 2 is located on the inner side of the air inlet grille 112.

[0103] The filter element 2 includes a filter 20 and a disassembly handle 24. The filter 20 includes a filter body 21 and a handle fixing seat 23 provided on the filter body 21. The disassembly handle 24 is movably provided on the handle fixing seat 23, and the disassembly handle 24 is located outside the filter 20. The filter body 21 includes a mesh body 210 and a mounting seat 22. The mounting seat 22 is provided on one side of the mesh body 210, and the handle fixing seat 23 is provided on the mounting seat 22.

[0104] The filter screen component 2 can be pulled out along the circumferential direction of the housing 1. The rear box body 11 is formed with a first guide limit groove 114 and a second guide limit groove 115 which are arranged at intervals along the length direction of the housing 1. The first guide limit groove 114 is located above the second guide limit groove 115. In the length direction of the housing 1, one end of the filter screen 20 is accommodated in the first guide limit groove 114, and the other end of the filter screen 20 is accommodated in the second guide limit groove 115, wherein the upper end of the net body 210 is accommodated in the first guide limit groove 114, and the lower end of the net body 210 is accommodated in the second guide limit groove 115.

[0105] The housing 1 is formed with a disassembly opening 113, which is located on one side of the air inlet 111 and extends in the up-down direction. The disassembly opening 113 is located on the side of the filter 20 close to the disassembly opening 113, and the disassembly opening 113 is opposite to the disassembly opening 113. The filter component 2 is suitable for being installed on the inner side of the air inlet grille 112 through the disassembly opening 113, and the filter component 2 is suitable for being taken out through the disassembly opening 113.

[0106] The mounting seat 22 is suitable for being snap-connected with the housing 1, and the housing 1 is formed with a fourth snap 116 and a fifth snap 117, which are located at opposite sides of the disassembly opening 113 in the width direction, and the mounting seat 22 is formed with a sixth snap 223 and a slot 224. The mounting seat 22 covers the disassembly opening 113, and the sixth snap 223 on the mounting seat 22 is snap-connected with the fourth snap 116 on the housing 1, and the slot 224 on the mounting seat 22 is snap-connected with the slot 224 on the housing 1. A mounting guide surface 118 is formed on the side of the fourth buckle 116 facing the outside of the housing 1. During the process of the sixth buckle 223 being engaged with the fourth buckle 116, the sixth buckle 223 cooperates with the mounting guide surface 118 and the sixth buckle 223 moves along the mounting guide surface 118; when the sixth buckle 223 is engaged with the fourth buckle 116, the sixth buckle 223 disengages from the mounting guide surface 118.

[0107] The mounting seat 22 is detachably connected to the net body 210, and the mounting seat 22 is connected to the net body 210 by snapping. The net body 210 has a mounting lug 213, and a snap hole 211 is formed on the mounting lug 213; a receiving groove 220 is formed on the mounting seat 22, and a third snap 221 is formed on the bottom wall of the receiving groove 220, and the mounting lug 213 is suitable for being received in the receiving groove 220, and the third snap 221 is snapped with the snap hole 211; the mounting lug 213 is arranged in a plurality of intervals along the up-down direction, and the upper and lower ends of the mounting lug 213 abut against the side wall of the receiving groove 220. A matching groove 222 is also formed on the mounting seat 22, and the net body 210 has a matching convex portion 212, and the matching convex portion 212 is received in the matching groove 222 along the extension direction of the net body 210.

[0108] The handle fixing seat 23 is arranged on the mounting seat 22, and the handle fixing seat 23 is detachably connected to the mounting seat 22. The handle fixing seat 23 includes a fixing seat body 231 and a connecting flange 232, and the connecting flange 232 is arranged on the outer peripheral side of the fixing seat body 231. The mounting seat 22 is provided with a positioning column 32 and a first fixing hole 33, and the connecting flange 232 is formed with a positioning hole 34 and a second fixing hole 35, the positioning hole 34 corresponds to the positioning column 32, and the positioning column 32 is suitable for being inserted into the positioning hole 34 to position the handle fixing seat 23 on the mounting seat 22; the second fixing hole 35 corresponds to the first fixing hole 33, and the fastener is suitable for being inserted into the second fixing hole 35 and the first fixing hole 33 to fix the handle fixing seat 23 to the mounting seat 22.

[0109] The disassembly handle 24 is rotatably disposed on the handle fixing seat 23, and the disassembly handle 24 is detachably connected to the handle fixing seat 23. The disassembly handle 24 has a locked state and an unlocked state; in the locked state, the disassembly handle 24 is received in the outer peripheral side of the handle fixing seat 23, and the disassembly handle 24 is fixed to the handle fixing seat 23 by the locking structure 3; in the unlocked state, the disassembly handle 24 can move relative to the filter 20. The locking structure 3 includes a buckle structure 31, and the disassembly handle 24 is fixed to the filter 20 by the buckle structure 31.

[0110] The buckle structure 31 includes a first buckle 311 and a second buckle 312 suitable for being engaged with each other, the first buckle 311 is arranged on the connecting flange 232, and the second buckle 312 is arranged on the disassembly and assembly handle 24; wherein, in the locked state, the second buckle 312 is engaged with the first buckle 311; in the unlocked state, the second buckle 312 is disengaged from the first buckle 311.

[0111] The disassembly handle 24 is rotatably connected to the fixed seat body 231. The fixed seat body 231 protrudes from the filter screen 20 body, and the disassembly handle 24 is U-shaped. A part of the fixed seat body 231 is accommodated in the U-shaped notch of the disassembly handle 24. The upper and lower ends of the fixed seat body 231 are formed with a rotating shaft hole 36. The disassembly handle 24 is formed with a rotating shaft 37 corresponding to the rotating shaft hole 36. The rotating shaft 37 is suitable for being inserted into the rotating shaft hole 36, and the rotating shaft 37 is rotatable in the rotating shaft hole 36, so that the disassembly handle 24 is rotatably connected to the fixed seat body 231.

[0112] A first groove 241 is formed on one side of the disassembly handle 24 in the thickness direction, and a second buckle 312 is formed on the side wall of the first groove 241; a plurality of first reinforcing ribs 242 are arranged at intervals in the first groove 241, and the first reinforcing ribs 242 are used to enhance the structural strength of the disassembly handle 24. A second groove 233 is formed in the fixing seat body 231, and a plurality of second reinforcing ribs 234 are arranged at intervals in the second groove 233, and the second reinforcing ribs 234 are used to enhance the structural strength of the fixing seat body 231.

[0113] The assembly process of the filter screen component 2 is as follows: first, the clamping hole 211 on the mesh body 210 can be clamped with the third clamping buckle 221 on the mounting seat 22, and the matching protrusion 212 can be accommodated in the matching groove 222 to connect the mesh body 210 with the mounting seat 22; then, the positioning column 32 is inserted into the positioning hole 34, and the fastener is passed through the second fixing hole 35 and the first fixing hole 33 to fix the handle fixing seat 23 to the mounting seat 22; finally, the rotating shaft 37 on the disassembly handle 24 is inserted into the rotating shaft hole 36 of the handle fixing seat 23, and the disassembly handle 24 is rotatably connected with the handle fixing seat 23; thereby, the assembly of the filter screen component 2 can be completed.

[0114] The installation process of the filter component 2 is as follows: first, extend the mesh body 210 into the inner side of the air inlet grille 112 through the disassembly and assembly opening 113, the upper end of the mesh body 210 cooperates with the first guide limit groove 114, and the lower end of the mesh body 210 cooperates with the second guide limit groove 115; then, hold the disassembly and assembly handle 24 and push the filter 20 to move circumferentially along the casing 1 until the mounting seat 22 covers the disassembly and assembly opening 113; finally, the sixth buckle 223 on the mounting seat 22 is engaged with the fourth buckle 116 on the casing 1, and the slot 224 on the mounting seat 22 is engaged with the slot 224 on the casing 1, so as to realize the installation of the filter component 2 on the casing 1.

[0115] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0116] In the description of the present invention, "plurality" means two or more.

[0117] In the description of the present invention, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0118] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0119] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0120] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A filter screen component, characterized in that: The filter screen component is suitable for being detachably mounted at the air inlet of the air conditioner, and the filter screen component comprises: Filter; A disassembly and assembly handle is movably arranged on the filter screen and is located outside the filter screen.

2. The filter element according to claim 1, characterized in that: The disassembly handle is rotatably arranged on the filter screen.

3. The filter element according to claim 1, characterized in that: The disassembly handle has a locked state and an unlocked state; In the locked state, the disassembly handle is fixed to the filter screen via a locking structure; in the unlocked state, the disassembly handle can move relative to the filter screen.

4. The filter element according to claim 3, characterized in that: The locking structure includes a snap-fit ​​structure.

5. The filter element according to claim 4, characterized in that: The buckle structure comprises a first buckle and a second buckle suitable for mutually buckling, the first buckle is arranged on the filter screen, and the second buckle is arranged on the disassembly handle; Wherein, in the locked state, the second buckle is engaged with the first buckle; in the unlocked state, the second buckle is disengaged from the first buckle.

6. The filter element according to claim 1, characterized in that: The disassembly handle is detachably arranged on the filter screen.

7. The filter element according to claim 1, characterized in that: An air inlet grille is provided at the air inlet, and the filter component is located on the inner side of the air inlet grille; a disassembly and assembly port is formed on the casing of the air conditioner, the disassembly and assembly port is located on one side of the air inlet, the disassembly and assembly handle is located on a side of the filter close to the disassembly and assembly port and opposite to the disassembly and assembly port, and the filter component is suitable for being installed on the inner side of the air inlet grille through the disassembly and assembly port and suitable for being taken out through the disassembly and assembly port.

8. The filter element according to claim 1, characterized in that: The filter screen comprises a filter screen body and a handle fixing seat arranged on the filter screen body, and the disassembly handle is movably arranged on the handle fixing seat.

9. The filter element according to claim 8, characterized in that: The handle fixing seat is detachably connected to the filter body.

10. The filter element according to claim 8, characterized in that: The disassembly handle has a locked state and an unlocked state; In the locked state, the detachable handle is stored in the outer peripheral side of the handle fixing seat, and the detachable handle is locked to the handle fixing seat by a locking structure; In the unlocked state, the disassembly handle can move relative to the filter screen.

11. The filter element according to claim 10, characterized in that: The handle fixing seat comprises a fixing seat body and a connecting flange, wherein the connecting flange is arranged on the outer peripheral side of the fixing seat body, the disassembly handle is rotatably connected to the fixing seat body, the connecting flange is connected to the filter body, and the locking structure comprises a buckle structure, wherein the buckle structure comprises a first buckle arranged on the connecting flange and a second buckle arranged on the disassembly handle; In the locked state, the disassembly handle is stored in the outer peripheral side of the fixing seat body, and the second buckle is engaged with the first buckle; in the unlocked state, the second buckle is disengaged from the first buckle.

12. The filter element according to claim 8, characterized in that: The filter body comprises a mesh body and a mounting seat, wherein the mounting seat is arranged at one side of the mesh body, and the handle fixing seat is arranged at the mounting seat.

13. The filter element according to claim 12, characterized in that: The mounting seat is detachably connected to the net body.

14. The filter element according to claim 13, characterized in that: The mounting seat is connected with the mesh body by snap-on connection.

15. The filter element according to claim 14, characterized in that: A third buckle is provided on one of the mounting seat and the net body, and a clamping hole engaged with the third buckle is provided on the other, and the third buckle is suitable for being clamped into the clamping hole along the thickness direction of the net body; a matching groove is also formed on the mounting seat, and the net body has a matching protrusion, and the matching protrusion is accommodated in the matching groove along the extension direction of the net body.

16. The filter element according to claim 12, characterized in that: A disassembly and assembly opening is formed on the casing of the air conditioner, the disassembly and assembly opening is located on one side of the air inlet, and the mounting seat covers the disassembly and assembly opening.

17. The filter element according to claim 16, characterized in that: The mounting seat is suitable for being snap-connected with the housing.

18. The filter element according to claim 17, characterized in that A fourth buckle and a fifth buckle are formed on the casing, and the fourth buckle and the fifth buckle are located on opposite sides of the disassembly and assembly port. A sixth buckle and a slot are formed on the mounting seat, and the sixth buckle is suitable for being connected with the fourth buckle, and the slot is suitable for being connected with the fifth buckle.

19. An air conditioner, characterized in that: include: A housing, formed with an air inlet and an air outlet; The filter component according to any one of claims 1 to 18, wherein the filter component is detachably mounted on the air inlet; The air supply component is arranged in the casing.

20. The air conditioner according to claim 19, characterized in that: The filter screen component can be pulled out along the circumference of the casing, and the casing is formed with a first guide limit groove and a second guide limit groove which are arranged at intervals along the length direction of the casing. In the length direction of the casing, one end of the filter screen is accommodated in the first guide limit groove, and the other end of the filter screen is accommodated in the second guide limit groove.

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