Filters and air conditioners

Abstract

The present invention provides a filter device and an air conditioner. The filter device is used in the air conditioner. The filter device includes a frame and a filter structure. The filter structure is detachably connected to the frame through a first buckle. The frame is used to be installed in the housing of the air conditioner. In the filter device provided by the present invention, the filter structure can be detachably connected to the frame through the first buckle. After the filter device is used for a period of time, the user can remove the filter structure for cleaning, maintenance or replacement.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a filtering device and an air conditioner. Background Art

[0002] The filter structure of the air conditioner will become ineffective or accumulate dust after long-term use, so the filter structure needs to be disassembled for cleaning after a period of use. In the related art, the filter structure is installed by fasteners such as screws and remains unchanged after disassembly. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0004] To this end, a first aspect of the present invention provides a filtering device.

[0005] A second aspect of the present invention provides an air conditioner.

[0006] A first aspect of the present invention provides a filter device for an air conditioner, the filter device comprising a frame and a filter structure, the filter structure being detachably connected to the frame via a first buckle, and the frame being used to be installed on a housing of the air conditioner.

[0007] The filtering device proposed in the present invention can be used in an air conditioner and can be installed on the shell of the air conditioner during use to ensure that it can filter impurities during the use of the air conditioner, ensure that the impurities in the air flow entering the air conditioner are significantly reduced, thereby ensuring the cleanliness of the air entering the air conditioner and the cleanliness of the air blown out by the air conditioner.

[0008] Specifically, the filter device includes a frame and a filter structure. The frame can be installed on the air conditioner housing to ensure the installation of the entire filter device; the filter structure can be detachably connected to the frame through a buckle, and plays a role in filtering impurities during the operation of the air conditioner. In particular, the filter structure and the frame are detachably connected. After the filter device has been used for a period of time, the user can remove the filter structure for cleaning, repair or replacement. In addition, the filter structure is installed through the first buckle, which makes it easier for the user to disassemble and assemble the filter structure and facilitate user operation. Furthermore, the frame itself can be installed with a filter component to achieve multiple filtering.

[0009] Therefore, in the filter device proposed in the present invention, the filter structure can be detachably connected to the frame via the first buckle. After the filter device has been used for a period of time, the user can disassemble the filter structure for cleaning, repair or replacement.

[0010] The filtering device according to the above technical solution of the present invention may also have the following additional technical features:

[0011] In the above technical solution, the frame is provided with a first buckle, and the filtering structure is buckled with the first buckle.

[0012] In any of the above technical solutions, a mounting protrusion is provided on the peripheral edge of the frame, and the mounting protrusion extends toward the side of the frame to form a mounting position; the first buckle is provided on the mounting protrusion, and the filtering structure is detachably installed in the mounting position.

[0013] In any of the above technical solutions, the frame includes a first filter screen, and the filter structure includes a second filter screen; the mesh number of the first filter screen is not equal to the mesh number of the second filter screen.

[0014] In any of the above technical solutions, the mesh number of the second filter is greater than the mesh number of the first filter.

[0015] The second aspect of the present invention provides an air conditioner, comprising: a shell having a return air port and an air outlet connected to each other; a filter device according to any of the above technical solutions, wherein the frame of the filter device is installed at the return air port and is detachably connected to the shell.

[0016] The air conditioner proposed by the present invention includes a filter device as described in any of the above technical solutions. Therefore, all the beneficial effects of the above filter device will not be discussed here one by one.

[0017] In addition, the housing has an air inlet and an air return port connected to each other, and an air duct is formed between the air inlet and the air return port; when the air conditioner is running, the external air will enter the air duct from the return air port and be blown out from the air outlet. The filter device is installed at the return air port, and the filter device has a certain filtering effect on the airflow passing through the return air port, ensuring that the impurities in the airflow entering the air duct are significantly reduced, thereby ensuring the cleanliness of the air entering the air duct, ensuring the cleanliness of the air inside the air conditioner, and ensuring the cleanliness of the air blown out from the air outlet.

[0018] In particular, the filter device is directly connected to the shell at the return air outlet without adopting the flange structure used in the related art. On the one hand, it can reduce the number of parts of the air conditioner, reduce the size of the air conditioner, and reduce the weight of the air conditioner. On the other hand, it is convenient for the staff to assemble, thereby improving the assembly efficiency of the filter device and further improving the processing efficiency of the air conditioner.

[0019] Therefore, the air conditioner proposed by the present invention directly connects the filter device to the shell, eliminating the flange structure in the related art, which can reduce the size of the air conditioner, reduce the weight of the air conditioner, and facilitate assembly and manufacturing by workers.

[0020] The air conditioner according to the above technical solution of the present invention may also have the following additional technical features:

[0021] In the above technical solution, the frame includes a frame body and a second buckle arranged on the frame body, and the frame is buckled at the return air outlet through the second buckle.

[0022] In the above technical solution, the frame includes a frame body and a first mounting hole arranged in the frame body, and the shell is provided with a second mounting hole; the air conditioner also includes a fastener, which passes through the first mounting hole and is installed in the second mounting hole.

[0023] In any of the above technical solutions, the mounting protrusion of the frame has a first sealing surface, the mounting protrusion extends into the shell, and the first sealing surface fits against the inner wall of the shell.

[0024] In any of the above technical solutions, the mounting protrusion of the frame is an integrated structure with the frame.

[0025] In any of the above technical solutions, a limiting protrusion is provided on the peripheral edge of the frame; the limiting protrusion extends toward the peripheral side of the frame, and the limiting protrusion includes a second sealing surface facing the return air outlet side, and the second sealing surface is in contact with the shell.

[0026] In any of the above technical solutions, the shell is provided with a folded edge at the return air outlet, and the second sealing surface is in contact with the folded edge.

[0027] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned by 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 1 is a schematic structural diagram of a filtering device according to an embodiment of the present invention;

[0030] Figure 2 yes Figure 1 A schematic diagram of the structure of the frame in the filtering device shown;

[0031] Figure 3 yes Figure 2 A partial enlarged view of the frame shown at point A;

[0032] Figure 4 It is one of the assembly drawings of the filter device in the air conditioner according to one embodiment of the present invention;

[0033] Figure 5 This is the second assembly drawing of the filter device in the air conditioner according to one embodiment of the present invention;

[0034] Figure 6 yes Figure 2 A partial enlarged view of position B of the frame shown;

[0035] Figure 7 yes Figure 2 A partial enlarged view of point C of the frame shown.

[0036] in, Figures 1 to 7 The corresponding relationship between the reference numerals and the component names is as follows:

[0037] 100 filtering device, 102 frame, 104 filtering structure, 106 first buckle, 108 mounting protrusion, 110 mounting position, 112 second buckle, 114 first mounting hole, 116 limiting protrusion, 118 first sealing surface, 120 second sealing surface, 122 frame, 202 shell, 204 return air outlet, 206 second mounting hole, 208 folded edge. DETAILED DESCRIPTION

[0038] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0040] Refer to the following Figures 1 to 7 The filtering device and the air conditioner provided according to some embodiments of the present invention are described.

[0041] like Figure 1 and Figure 2 As shown, the first embodiment of the present invention proposes a filter device 100, which can be used in an air conditioner and can be installed on the housing 202 of the air conditioner during use to ensure that it can filter impurities during the use of the air conditioner, ensure that the impurities in the air flow entering the air conditioner are significantly reduced, thereby ensuring the cleanliness of the air entering the air conditioner, and further ensuring the cleanliness of the air blown out by the air conditioner.

[0042] Specifically, Figure 1 and Figure 2As shown, the filter device 100 includes a frame 102 and a filter structure 104. Among them, the frame 102 can be installed in the air conditioner housing 202 to ensure the installation of the entire filter device 100; the filter structure 104 can be detachably connected to the frame 102 through the first buckle 106, and plays the effect of filtering impurities during the operation of the air conditioner. In particular, the filter structure 104 and the frame 102 are detachably connected. After the filter device 100 has been used for a period of time, the user can disassemble the filter structure 104 for cleaning, repair or replacement. In addition, the filter structure 104 is installed through the first buckle 106, which is more convenient for the user to disassemble and assemble the filter structure 104 and facilitate user operation. Furthermore, the frame 102 itself can be installed with a filter component to achieve multiple filtering.

[0043] Therefore, in the filter device 100 proposed in this embodiment, the filter structure 104 can be detachably connected to the frame 102 via the first buckle 106. After the filter device 100 has been used for a period of time, the user can disassemble the filter structure 104 for cleaning, repair or replacement.

[0044] The second embodiment of the present invention provides a filtering device 100, which further comprises:

[0045] like Figure 2 and Figure 3 As shown, the frame 102 is provided with the above-mentioned first buckle 106, and the filter structure 104 is snapped with the first buckle 106. That is, the filter device 100 proposed in this embodiment is provided with the first buckle 106 on the frame 102. During the installation of the filter structure 104, the user can directly install the filter structure 104 on the frame 102, and fix it through the first buckle 106 of the frame 102, which ensures the stable installation of the filter structure 104 on the one hand, and ensures the convenience of disassembly and assembly by the user on the other hand.

[0046] In a specific embodiment, a plurality of first buckles 106 may be provided, and the plurality of first buckles 106 are distributed along the circumference of the frame 102 , so that the filter structure 104 has a plurality of snap-fit ​​positions, thereby ensuring the snap-fit ​​strength of the filter structure 104 .

[0047] In this embodiment, further, Figure 2 As shown, the peripheral edge of the frame 102 is provided with a mounting protrusion 108, and the first buckle 106 is provided on the mounting protrusion 108. In addition, the mounting protrusion 108 extends toward the side of the frame 102 and forms a mounting position 110. During the installation of the filter structure 104, the filter structure 104 can be directly installed in the mounting position 110 and fixed directly with the first buckle 106.

[0048] Specifically, Figure 3As shown, the first buckle 106 is formed on the mounting protrusion 108 and is located inside the mounting position 110. In this way, when the filter structure 104 is installed in the mounting position 110, the first buckle 106 can be directly snapped onto the filter structure 104 to ensure the installation of the filter structure 104. In addition, the first buckle 106 can be designed as an integral part with the mounting protrusion 108 to simplify the preparation of the first buckle 106 and simplify the overall structure of the first buckle 106 and the mounting protrusion 108.

[0049] In addition, if Figure 2 As shown, the mounting protrusion 108 and the frame 102 are an integrated structure. That is, during the process of preparing the frame 102, it can be directly prepared by an integrated injection molding method. In this way, through the integrated design method, on the one hand, the connection strength between the mounting protrusion 108 and the frame 102 can be ensured, while avoiding the use of additional connecting parts, and on the other hand, the preparation process of the frame 102 can be reduced, which is convenient for improving the preparation efficiency of the frame 102.

[0050] The third embodiment of the present invention provides a filtering device 100, which further comprises:

[0051] like Figure 1 and Figure 2 As shown, the frame 102 includes a first filter screen, and the filter structure 104 includes a second filter screen. In this way, during the use of the filter device 100, the first filter screen and the second filter screen can cooperate to achieve secondary filtration of impurities, which greatly improves the filtration efficiency and filtration effect of the filter device 100 on impurities. In addition, the mesh number of the first filter screen is not equal to the mesh number of the second filter screen, and the first filter screen and the second filter screen have different filtration effects on impurities; in this way, primary filtration can be achieved through one of the first filter screen and the second filter screen, and medium-efficiency filtration or high-efficiency filtration can be achieved through the other of the first filter screen and the second filter screen.

[0052] Specifically, Figure 1 and Figure 2 As shown, the mesh number of the second filter is greater than the mesh number of the first filter, and the airflow first passes through the first filter during use of the filter device 100. In this way, primary filtration can be achieved through the first filter, and medium-efficiency filtration or high-efficiency filtration can be achieved through the second filter.

[0053] In a specific embodiment, those skilled in the art can understand the concept of "mesh number". The larger the mesh number, the more filter holes there are per unit area, which means the denser the filter holes are, and the higher the filtering performance.

[0054] like Figure 4 and Figure 5As shown, the fourth embodiment of the present invention provides an air conditioner, comprising: a housing 202 and a filter device 100 as in any one of the first to third embodiments.

[0055] The air conditioner proposed in this embodiment includes the filter device 100 as in any one of the embodiments 1 to 3. Therefore, all the beneficial effects of the filter device 100 are not discussed here one by one.

[0056] In addition, the housing 202 has an air inlet and an air return port 204 that are connected, and an air duct is formed between the air inlet and the air return port 204; when the air conditioner is running, the external air will enter the air duct from the air return port 204 and be blown out from the air outlet. The filter device 100 is installed at the air return port 204, and the filter device 100 has a certain filtering effect on the airflow passing through the air return port 204, ensuring that the impurities in the airflow entering the air duct are significantly reduced, thereby ensuring the cleanliness of the air entering the air duct, ensuring the cleanliness of the air inside the air conditioner, and further ensuring the cleanliness of the air blown out from the air outlet.

[0057] In particular, if Figure 4 and Figure 5 As shown, the filter device 100 is directly connected to the shell 202 at the return air outlet 204 without adopting the flange structure used in the related art. On the one hand, the number of parts of the air conditioner can be reduced, the size of the air conditioner can be reduced, and the weight of the air conditioner can be reduced. On the other hand, it is convenient for the staff to assemble, thereby improving the assembly efficiency of the filter device 100 and the processing efficiency of the air conditioner.

[0058] Therefore, the air conditioner proposed in this embodiment directly connects the filter device 100 to the shell 202, eliminating the flange structure in the related art, which can reduce the size of the air conditioner, reduce the weight of the air conditioner, and facilitate assembly and manufacturing by workers.

[0059] The fifth embodiment of the present invention provides an air conditioner, which is based on the fourth embodiment and further comprises:

[0060] like Figure 2 and Figure 6 As shown, the frame 102 includes a frame body 122 and a second buckle 112 provided on the frame body 122, and the frame 102 is snapped at the return air outlet 204 through the second buckle 112. The frame 102 of the filter device 100 is provided with a second buckle 112, so that the frame 102 is installed at the return air outlet 204 by snapping. In the process of assembling the frame 102, the frame 102 can be directly installed at the position of the return air outlet 204, and the second buckle 112 is ensured to be snapped with the shell 202, thereby ensuring that the frame 102 is stably installed at the return air outlet 204, and ensuring the stable connection between the filter device 100 and the shell 202.

[0061] In particular, the second buckle 112 has a simple structure and the snap-on connection is easy to operate. During the installation of the frame 102, the staff can directly snap the frame 102 to the return air outlet 204 without using additional tools, which is convenient for the staff to operate and helps to improve the installation efficiency of the filter device 100.

[0062] In a specific embodiment, a plurality of second buckles 112 may be provided, and the plurality of second buckles 112 are distributed along the circumference of the frame 102 , so that the frame 102 has a plurality of snap-fit ​​positions, thereby ensuring the snap-fit ​​strength of the frame 102 .

[0063] The sixth embodiment of the present invention provides an air conditioner, which is based on the fourth embodiment and further comprises:

[0064] like Figure 2 and Figure 7 As shown, the frame 102 includes a frame body 122 and a first mounting hole 114 provided in the frame body 122, a second mounting hole is provided in the shell, and a second mounting hole 206 is provided at the return air outlet 204, so that the frame 102 is installed at the return air outlet 204 by fasteners. Specifically, in the process of installing the frame 102, the frame 102 is first placed at the position of the return air outlet 204, and the positions of the first mounting hole 114 and the second mounting hole 206 are aligned; then, the fastener passes through the first mounting hole 114 and is tightened in the second mounting hole 206 to ensure the stable connection between the frame 102 and the shell 202.

[0065] In particular, the connection method of the fasteners can greatly improve the connection strength and connection stability of the frame 102, and can prevent the filter device 100 from falling off during the operation of the air conditioner.

[0066] In a specific embodiment, a plurality of fasteners may be provided, and the number of the first mounting holes 114 and the number of the second mounting holes 206 match the number of fasteners, so that the frame 102 has a plurality of fastening positions, thereby ensuring the connection strength of the frame 102 .

[0067] The seventh embodiment of the present invention provides an air conditioner, which is based on the fourth embodiment and further comprises:

[0068] like Figure 2 , Figure 6 and Figure 7As shown, the frame 102 includes a frame body 122 and a first mounting hole and a second buckle 112 provided on the frame body 122. The frame 102 of the filter device 100 is provided with a second buckle 112, so that the frame 102 is mounted at the return air outlet 204 by snapping. In addition, the frame 102 is provided with a first mounting hole 114, and the return air outlet 204 is provided with a second mounting hole 206, so that the frame 102 is mounted at the return air outlet 204 by fasteners.

[0069] Specifically, during the installation of the frame 102, the frame 102 is first placed at the position of the return air outlet 204, and the first mounting hole 114 is aligned with the second mounting hole 206; at this time, the second buckle 112 is engaged with the housing 202, and the preliminary installation of the frame 102 is achieved. Then, the fastener passes through the first mounting hole 114 and is tightened in the second mounting hole 206 to ensure a stable connection between the frame 102 and the housing 202.

[0070] In particular, the second buckle 112 can play a role in preliminarily fixing the frame 102 on the one hand, and can play a role in positioning on the other hand, ensuring that during the process of tightening the fastener, the frame 102 is positioned by the second buckle 112, ensuring that the positions of the first mounting hole 114 and the second mounting hole 206 are aligned, and the staff is required to hold the frame 102. In addition, the fastener can play a role in secondary fixing, greatly improving the connection strength and connection stability of the frame 102.

[0071] The eighth embodiment of the present invention provides an air conditioner, which is based on the fourth embodiment and further comprises:

[0072] like Figure 6 and Figure 7 As shown, the mounting protrusion 108 of the frame 102 has a first sealing surface 118. After the frame 102 is installed, the mounting protrusion 108 of the frame 102 extends into the inner wall of the housing 202, and ensures that the first sealing surface 118 fits the inside of the housing 202, thereby ensuring the sealing of the frame 102 and the housing 202 at the return air port 204.

[0073] In this embodiment, further, Figure 6 and Figure 7As shown, a limiting protrusion 116 is provided on the peripheral edge of the frame 102. The limiting protrusion 116 extends toward the peripheral side of the frame 102, and the limiting protrusion 116 is located at the periphery of the mounting protrusion 108. A second sealing surface 120 is formed on the side of the limiting protrusion 116 facing the air inlet. After the frame 102 is installed, the second sealing surface 120 fits with the shell 202, which can play a certain limiting role on the one hand, ensuring the size of the mounting protrusion 108 extending into the return air outlet 204, and on the other hand, ensuring that the second sealing surface 120 of the frame 102 is directly and tightly fitted with the shell 202, thereby ensuring the sealing effect at the return air outlet 204.

[0074] Specifically, during the installation of the frame 102, the installation protrusion 108 is first inserted into the interior of the return air port 204 so that the installation protrusion 108 can play a good guiding role, and the first sealing surface 118 of the installation protrusion 108 is attached to the inner wall of the housing 202 to ensure the sealing effect at the return air port 204 to a certain extent. After the installation protrusion 108 is inserted a certain distance, the second sealing surface 120 of the limiting protrusion 116 abuts against the end of the return air port 204 to limit the insertion depth of the installation protrusion 108. At this time, the second sealing surface 120 is attached to the end of the return air port 204, and then the sealing at the return air port 204 is ensured by the cooperation of the first sealing surface 118 of the installation protrusion 108 and the second sealing surface 120 of the limiting protrusion 116.

[0075] In this embodiment, further, Figure 6 and Figure 7 As shown, the housing 202 is provided with a folded edge 208 at the return air outlet 204. The folded edge 208 is bent toward the inner side of the return air outlet 204. After the frame 102 is installed, the second sealing surface 120 of the frame 102 directly fits with the folded edge 208, ensuring the fitting area between the second sealing surface 120 and the folded edge 208, and ensuring the sealing at the return air outlet 204.

[0076] In a specific embodiment, the shell 202 is directly bent at the air return port 204 to form the folded edge 208 , and the bending direction of the folded edge 208 is toward the inner side of the shell 202 .

[0077] In addition, a seal (not shown in the figure) may be provided between the second sealing surface 120 and the folded edge 208, thereby further improving the sealing effect between the second sealing surface 120 and the folded edge 208. Those skilled in the art may choose whether to add a seal according to actual needs, which is understandable to those skilled in the art.

[0078] In addition, the air conditioner further includes a fan (not shown in the figure). The fan is arranged in the housing 202, between the air inlet and the return air outlet 204, and can be used to drive external air from the return air outlet 204 into the air duct and be discharged from the air outlet.

[0079] In addition, the air conditioner also includes a heat exchanger (not shown in the figure). The heat exchanger is arranged in the housing 202, between the air inlet and the return air outlet 204, and can be used to exchange heat with the air in the air duct to achieve the cooling and heating capabilities of the air conditioner.

[0080] like Figure 1 and Figure 2 As shown, the first specific embodiment of the present invention proposes a filter device 100, which includes a frame 102 and a filter structure 104. The frame 102 can be installed in the air conditioner housing 202 to ensure the installation of the entire filter device 100; the filter structure 104 can be detachably connected to the frame 102 through a first buckle 106, and plays a role in filtering impurities during the operation of the air conditioner. After the filter device 100 has been used for a period of time, the user can disassemble the filter structure 104 for cleaning, maintenance or replacement.

[0081] In this embodiment, further, Figure 2 and Figure 3 As shown, the frame 102 is provided with the above-mentioned first buckle 106, and the filter structure 104 is buckled with the first buckle 106. In addition, the peripheral edge of the frame 102 is provided with a mounting protrusion 108, and the first buckle 106 is arranged on the mounting protrusion 108. Moreover, the mounting protrusion 108 extends toward the side of the frame 102 and forms a mounting position 110. During the process of installing the filter structure 104, the filter structure 104 can be directly installed in the mounting position 110 and directly fixed with the first buckle 106.

[0082] In this embodiment, further, Figure 1 and Figure 2 As shown, the frame 102 includes a first filter screen, and the filter structure 104 includes a second filter screen, and the mesh number of the second filter screen is greater than the mesh number of the first filter screen. In this way, primary filtration can be achieved through the first filter screen, and medium-efficiency filtration or high-efficiency filtration can be achieved through the second filter screen.

[0083] A second specific embodiment of the present invention provides an air conditioner, comprising the filter device 100 provided in the first specific embodiment of the present invention.

[0084] In addition, if Figure 4 and Figure 5As shown, the housing 202 has a connected air inlet and return air outlet 204. The filter device 100 is directly connected to the housing 202 at the return air outlet 204, without having to adopt the flange structure used in the related art. On the one hand, the number of parts of the air conditioner can be reduced, the size of the air conditioner can be reduced, and the weight of the air conditioner can be reduced. On the other hand, it is convenient for the staff to assemble, thereby improving the assembly efficiency of the filter device 100 and the processing efficiency of the air conditioner.

[0085] In this embodiment, further, Figure 2 , Figure 6 and Figure 7 As shown, the frame 102 of the filter device 100 may be provided with a second buckle 112, so that the frame 102 is mounted at the return air outlet 204 by snapping. The frame 102 of the filter device 100 may also be provided with a first mounting hole 114, and the return air outlet 204 is provided with a second mounting hole 206, so that the frame 102 is mounted at the return air outlet 204 by fasteners.

[0086] In this embodiment, further, Figure 6 and Figure 7 As shown, the mounting protrusion 108 of the frame 102 has a first sealing surface 118. After the frame 102 is installed, the mounting protrusion 108 of the frame 102 extends into the inner wall of the housing 202, and ensures that the first sealing surface 118 fits the inside of the housing 202, thereby ensuring the sealing of the frame 102 and the housing 202 at the return air port 204. Figure 6 and Figure 7 As shown, a limiting protrusion 116 is provided on the peripheral edge of the frame 102. The limiting protrusion 116 extends toward the peripheral side of the frame 102, and the limiting protrusion 116 is located on the outer periphery of the mounting protrusion 108. A second sealing surface 120 is formed on the side of the limiting protrusion 116 facing the air inlet. After the frame 102 is installed, the second sealing surface 120 fits with the shell 202. On the one hand, it can play a certain limiting role to ensure that the mounting protrusion 108 extends into the size of the return air outlet 204. On the other hand, it ensures that the second sealing surface 120 of the frame 102 is directly and tightly fitted with the shell 202, thereby ensuring the sealing effect at the return air outlet 204. In addition, as shown in FIG. Figure 6 and Figure 7 As shown, the housing 202 is provided with a folded edge 208 at the return air outlet 204. The folded edge 208 is bent toward the inner side of the return air outlet 204. After the frame 102 is installed, the second sealing surface 120 of the frame 102 directly fits with the folded edge 208, ensuring the fitting area between the second sealing surface 120 and the folded edge 208, and ensuring the sealing at the return air outlet 204.

[0087] In this embodiment, the air conditioner further includes a fan, which is arranged in the housing 202, between the air inlet and the return air outlet 204, and can be used to drive the external air into the air duct from the return air outlet 204, and discharged from the air outlet. The air conditioner also includes a heat exchanger, which is arranged in the housing 202, between the air inlet and the return air outlet 204, and can be used to exchange heat with the air in the air duct to achieve the cooling and heating capabilities of the air conditioner.

[0088] In the related art, the filter device of the air conditioner is installed at the return air outlet of the shell through a flange structure. Specifically, during the installation process, the flange structure is fixed to the return air outlet of the shell, and then the filter device is fixed to the flange structure. Among them, the flange structure is a sheet metal structure, which increases the overall size and weight of the air conditioner; and the sealing of the connection position between the filter device and the flange structure is difficult to ensure, which makes it difficult to ensure the sealing of the return air outlet; and the filter device is inconvenient to disassemble.

[0089] Therefore, if Figure 4 and Figure 5 As shown, the air conditioner proposed by the present invention eliminates the flange structure of the related art, directly installs the frame 102 of the filter device 100 at the return air port 204 of the housing 202, and makes the filter device 100 directly connected to the housing 202. In addition, the type of the filter device 100 can be selected according to actual needs, and a low-efficiency filter device, a medium-efficiency filter device, and a high-efficiency filter device can be selected; the filter structure 104 can also be installed on the frame 102 of the filter device 100, so that the filter device 100 and the filter structure 104 are used in conjunction, providing users with more choices.

[0090] In a specific embodiment, Figure 2 , Figure 6 and Figure 7 As shown, the frame 102 of the filter device 100 is provided with a second buckle 112, a mounting protrusion 108, a limiting protrusion 116, and a first mounting hole 114; the return air outlet 204 is provided with a second mounting hole 206 and a folded edge 208. Figure 4 and Figure 5As shown, during the installation of the filter device 100, the frame 102 is first fixed to the return air outlet 204 of the shell 202 by the second buckle 112. At this time, the mounting protrusion 108 extends into the interior of the return air outlet 204, the first sealing surface 118 of the mounting protrusion 108 fits the inner wall of the shell 202, and the second sealing surface 120 of the limiting protrusion 116 fits tightly against the folded edge 208 of the return air outlet 204, thereby achieving the sealing between the frame 102 and the shell 202 at the return air outlet 204. In addition, a fastener can also be inserted into the first mounting hole 114 and tightened in the first mounting hole 114 to fix the frame 102 to the return air outlet 204 of the shell 202. Specifically, the fastener can be a screw, and the first mounting hole 114 and the second mounting hole 206 are screw holes.

[0091] In a specific embodiment, Figure 1 and Figure 2 As shown, the frame 102 includes a first filter screen, and the filter structure 104 includes a second filter screen. In this way, during the use of the filter device 100, the first filter screen and the second filter screen can cooperate to achieve secondary filtration of impurities. Specifically, the filter structure 104 and the filter structure 104 are fixed by the first buckle 106, the first filter screen can be a coarse filter screen, and the second filter screen can be a medium-efficiency filter screen or a high-efficiency filter screen.

[0092] Therefore, the air conditioner proposed by the present invention directly connects the filter device 100 to the housing 202, eliminating the flange structure in the related art. During the installation of the filter device 100, the staff can directly snap the filter device 100 to the return air port 204 without using additional tools, which is convenient for the staff to operate and helps to improve the installation efficiency of the filter device 100. At the same time, the size of the air conditioner can be greatly reduced, while reducing the weight of the air conditioner, and it is convenient for the staff to assemble and manufacture.

[0093] Furthermore, based on eliminating the flange structure, the present invention can ensure that after the filter device 100 is installed, the first sealing surface 118 of the mounting protrusion 108 fits the inner wall of the shell 202, and the second sealing surface 120 of the limiting protrusion 116 fits tightly against the folded edge 208 of the return air outlet 204, thereby achieving sealing at the return air outlet 204, and effectively solving the problem of poor sealing effect at the return air outlet in related technologies.

[0094] In the description of the present invention, the term "plurality" refers to two or more than two. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention. The terms "connection", "installation", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0095] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. 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 can be combined in any one or more embodiments or examples in a suitable manner.

[0096] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A filtering device for an air conditioner, the air conditioner comprising a housing having a return air port and an air outlet connected to each other, characterized in that: The filter device comprises a frame and a filter structure, the filter structure is detachably connected to the frame via a first buckle, and the frame is used to be installed on the housing of the air conditioner; The frame includes a first filter screen, and the filter structure includes a second filter screen; The mesh number of the first filter is not equal to the mesh number of the second filter, and the mesh number of the second filter is greater than the mesh number of the first filter; The air conditioner comprises a shell, the shell has a return air port and an air outlet which are connected to each other, the frame of the filter device is installed at the return air port and is detachably connected to the shell; The peripheral edge of the frame is provided with a mounting protrusion, and the mounting protrusion extends toward the side of the frame to form a mounting position; The first buckle is arranged on the mounting protrusion, and the filtering structure is detachably mounted on the mounting position; The mounting protrusion and the frame are an integrated structure, and the first buckle and the mounting protrusion are an integrated structure; The mounting protrusion has a first sealing surface, the mounting protrusion extends into the housing, and the first sealing surface is in contact with the inner wall of the housing; The peripheral side edge of the frame is provided with a limiting protrusion; The limiting protrusion extends toward the peripheral side of the frame, and the limiting protrusion includes a second sealing surface facing the return air port, and the second sealing surface is in contact with the shell.

2. The filtering device according to claim 1, characterized in that: The frame is provided with the first buckle, and the filtering structure is buckled with the first buckle.

3. An air conditioner, characterized in that: include: A housing having an air return port and an air outlet that are connected to each other; The filter device according to claim 1 or 2, wherein the frame of the filter device is installed at the return air outlet and is detachably connected to the shell.

4. The air conditioner according to claim 3, characterized in that: The frame includes a frame body and a second buckle arranged on the frame body, and the frame is buckled at the return air outlet through the second buckle.

5. The air conditioner according to claim 3, characterized in that: The frame includes a frame body and a first mounting hole arranged in the frame body, and the housing is provided with a second mounting hole; The air conditioner further comprises a fastener, wherein the fastener is passed through the first mounting hole and is mounted in the second mounting hole.

6. The air conditioner according to any one of claims 3 to 5, characterized in that: The mounting protrusion of the frame has a first sealing surface, the mounting protrusion extends into the shell, and the first sealing surface is in contact with the inner wall of the shell.

7. The air conditioner according to any one of claims 3 to 5, characterized in that: The peripheral side edge of the frame is provided with a limiting protrusion; The limiting protrusion extends toward the peripheral side of the frame, and the limiting protrusion includes a second sealing surface facing the return air port, and the second sealing surface is in contact with the shell.

8. The air conditioner according to claim 7, characterized in that: The shell is provided with a folded edge at the return air outlet, and the second sealing surface is in contact with the folded edge.

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