Air inlet filtering device of duct type air conditioner and duct type air conditioner

Abstract

The utility model relates to a wind pipe machine air inlet filtering device and a wind pipe machine with the wind pipe machine air inlet filtering device, and belongs to the technical field of air conditioners. The wind pipe machine air inlet filtering device comprises a filtering frame and a filter element, the filter element is installed in the filtering frame, the filtering frame comprises a left side plate, a right side plate, a bottom plate and a top plate which are fixedly connected together, the front face of the filtering frame is a filtering air inlet, and the rear face of the filtering frame is a filtering air outlet. The filter element comprises a first filter element installed in the left side area of the filter frame and a second filter element installed in the right side area of the filter frame, first guide rail plates are fixedly arranged on the upper surface of the bottom plate and the lower surface of the top plate, a second guide rail plate is fixedly arranged on the inner wall of the right side plate, and a filter element dismounting opening is reserved in the right side area of the bottom plate of the filter frame; the bottom plate is provided with the limiting fixing piece in the left side area of the filter element disassembling and assembling opening through the switch switching connecting piece, the filter elements are all disassembled and assembled from the filter element disassembling and assembling opening in the right side area, and the structure is simple and reliable.

Description

Technical Field

[0001] The utility model relates to an air inlet filter device for an air duct unit and an air duct unit with the air inlet filter device, belonging to the technical field of air conditioning. Background Art

[0002] Duct air conditioners are hidden air conditioners, commonly known as duct air conditioners. Duct air conditioners have a wide range of applications due to their low price, relatively high unit energy efficiency, and ease of introducing fresh air. A filter device is usually fixed at the air inlet of the duct air conditioner. The filter device includes a filter frame. Various filter elements are installed in the filter frame to ensure that the incoming air can filter out impurities and bacteria. The conventional installation method of the filter device is to detachably install it in the outer casing of the duct air conditioner through screws or buckles or a combination of the two. The filter element therein needs to be cleaned and maintained regularly. The existing filter element is generally connected to the filter frame through an independently set screw or buckle structure. It cannot be quickly disassembled manually and cannot be quickly reset, which affects work efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an air inlet filter device for an air duct machine, which can facilitate the replacement and cleaning of the filter element at a later stage.

[0004] The filtration system of the present invention is characterized in that: the filtration system of the present invention has the advantages of small size and high efficiency, and the filtration efficiency is high, and the filtration efficiency is high, and the filtration efficiency is low, and the filtration efficiency is high; the filtration efficiency is high, and the filtration efficiency is high; the filtration efficiency is high, and the filtration efficiency is high; the filtration efficiency is high, and the filtration efficiency is high; the filtration efficiency is high, and the filtration efficiency is high; the filtration efficiency is high, and the filtration efficiency is high The limit fixing plate has a first state that allows the filter element to be installed in the filter frame through the filter element disassembly port and to be removed from the filter frame through the filter element disassembly port, and the limit fixing plate has a second state that provides limit support for the second filter element, and the switch switching connecting piece is used to realize the switching of the limit fixing plate between the first state and the second state; when the filter element is installed, the limit fixing plate is pre-initiated in the first state, and the first filter element can be clamped into the right end area of the first guide plate through the filter element disassembly port and slide to the left along the first guide plate to be clamped to the predetermined installation position, and the second filter element can be slid upward along the second guide plate through the filter element disassembly port to be clamped to the predetermined installation position, and at this time the second filter element can prevent the first filter element from sliding to the right; when the filter element is removed, the limit fixing plate is pre-initiated in the first state, and the second filter element can slide downward along the second guide plate and be removed from the filter element disassembly port, and the first filter element can slide to the right along the first guide plate to the area where the filter element disassembly port is located and be removed from the filter element disassembly port.

[0005] It is further preferred that the switch switching connecting piece is a locking bolt, and the limiting fixing piece has a bolt through hole matching the locking bolt.

[0006] It is further preferred that each limiting fixing piece is provided with two bolt through holes.

[0007] It is further preferred that at least part of the limiting fixing piece is used to simultaneously provide limiting support for two adjacent second filter elements.

[0008] It is further preferred that a plurality of first filter elements and second filter elements are respectively arranged at intervals along the front-to-back direction of the filter frame, and the first filter elements and the second filter elements are arranged in a bilaterally symmetrical manner within the filter frame.

[0009] It is further preferred that a handle structure is provided at the right end of the first filter element.

[0010] It is further preferred that at least part of the first guide rail plate on the bottom plate is fixedly connected to the right side plate of the filter frame, and the combination of two adjacent first guide rail plates constitutes a chute matching the first filter element.

[0011] It is further preferred that the front end of the left side panel and the front end of the right side panel, and the rear end of the left side panel and the rear end of the right side panel are respectively connected via fixed connecting plates.

[0012] It is further preferred that the lower surface of the top plate is fixedly connected to the upper surface of the bottom plate in the middle area in the left-right direction through a plurality of vertical support columns, and the vertical support columns are arranged at intervals along the front-to-back direction of the filter frame.

[0013] Correspondingly, the utility model also provides a duct air conditioner with the above-mentioned duct air conditioner air inlet filter device, including a shell, the front of the shell having an air-conditioning air inlet, the bottom of the shell having an inspection port, the inspection port being equipped with an openable and closable inspection door, the air-conditioning air inlet of the shell being fixedly provided with the above-mentioned duct air conditioner air inlet filter device, and the filter air inlet of the duct air conditioner air inlet filter device is facing the air-conditioning air inlet, and the filter element disassembly and assembly port is facing the inspection port.

[0014] The beneficial effects of the present invention are as follows: after the filter element is installed, the first filter element located in the left area is limited in the up-down and front-back directions by the bottom plate, top plate and first guide plate, and is limited in the left and right directions by the left plate and the second filter element, which can fully ensure the installation reliability of the first filter element; the second filter element located in the right area is limited in the up-down and front-back directions by the limiting fixing plate, top plate and second guide plate, and is limited in the left and right directions by the right plate and the first filter element, which can fully ensure the installation reliability of the first filter element. When it is necessary to disassemble and remove the filter element, it is only necessary to pre-switch the limiting fixing plate to the first state, and then slide out the second filter element and the first filter element in sequence according to the set action sequence; when it is necessary to install the filter element, it is necessary to slide in the first filter element and the second filter element in sequence according to the set action sequence, and finally switch the limiting fixing plate to the second state. The present invention greatly reduces the workload of disassembling and assembling connectors such as screws or buckles when replacing and cleaning the filter element, thereby effectively improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the air inlet filter device of the duct air conditioner in the present invention.

[0016] Figure 2 It is a three-dimensional structural diagram of the filter frame in the present invention (without filter element installed).

[0017] Figure 3 It is a schematic structural diagram of the bottom plate assembly of the filter frame in the present utility model.

[0018] Figure 4The utility model is a structural diagram of the air inlet filter device of the duct air conditioner after being installed in the duct air conditioner.

[0019] Figure 5 This is a schematic diagram of the process of removing the filter element of the duct machine in this utility model Figure 1 (Rotate the limit fixing piece to a certain angle).

[0020] Figure 6 This is a schematic diagram of the process of removing the filter element of the duct machine in this utility model Figure 2 (Take out the second filter element downwards).

[0021] Figure 7 This is a schematic diagram of the process of removing the filter element of the duct machine in this utility model Figure 3 (Slide to the right first and then slide downward to remove the first filter element).

[0022] Parts marked in the figure: filter frame 10, left side plate 11, right side plate 12, bottom plate 13, top plate 14, filter air inlet 15, filter air outlet 16, first guide plate 17, second guide plate 18, filter element disassembly and assembly port 19, switch switching connector 110, limit fixing plate 111, fixed connecting plate 112, vertical support column 113, avoidance gap 114, lug 115; filter element 20; outer shell 30, air conditioning air inlet 31, inspection port 32. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] It should be noted in advance that the limitations on directions such as front, back, left, right, up, down, top and bottom in the present invention are only for the convenience of understanding the technical solution. If the observation angle is different, the positions of the corresponding components will also be different.

[0025] like Figures 1 to 7As shown, the air duct air inlet filter device of the present invention includes a filter frame 10 and a filter element 20, the filter element 20 is installed in the filter frame 10, the filter frame 10 includes a left plate 11, a right plate 12, a bottom plate 13 and a top plate 14 fixedly connected together, the front of the filter frame 10 is a filter air inlet 15, and the back is a filter air outlet 16, the filter air inlet 15 and the filter air outlet 16 are arranged relative to each other, the filter element 20 is installed in the interval area between the filter air inlet 15 and the filter air outlet 16, the filter element 20 includes a first filter element installed in the left area of the filter frame 10 and a second filter element installed in the right area of the filter frame 10 The second filter element in the domain, the upper surface of the bottom plate 13 and the lower surface of the top plate 14 are fixedly provided with first guide rail plates 17 arranged opposite to each other, the first guide rail plate 17 extends horizontally in the left and right directions, and the inner wall of the right side plate 12 is fixedly provided with a second guide rail plate 18 extending vertically. The filter frame 10 is reserved with a filter element disassembly and assembly port 19 in the right area of the bottom plate 13, and the bottom plate 13 is installed with a limit fixing piece 111 in the left area of the filter element disassembly and assembly port 19 through a switch switching connector 110. The limit fixing piece 111 has the function of allowing the filter element 20 to be installed in the filter frame 10 through the filter element disassembly and assembly port 19 and to pass through the filter element disassembly and assembly port 19. When the filter element 20 is installed, the limiting fixing piece 111 is in the first state, the first filter element can be inserted into the right end area of the first guide plate 17 through the filter element disassembly and assembly opening 19, and slide to the left along the first guide plate 17 to be inserted into the predetermined installation position, and the second filter element can be inserted into the predetermined installation position by sliding upward along the second guide plate 18 through the filter element disassembly and assembly opening 19, and at this time the second filter element can block the filter element 20. Stop the first filter element from sliding to the right; when removing the filter element 20, the limiting fixing plate 111 is in the first state in advance, the second filter element can slide downward along the second guide plate 18 and be taken out from the filter element disassembly port 19, and the first filter element can slide to the right along the first guide plate 17 to the area where the filter element disassembly port 19 is located and be taken out from the filter element disassembly port 19. It should be noted that the description of the process of installing and removing the filter element 20 here is only to clearly reflect the specific coordination relationship between the first guide plate 17, the second guide plate 18, the filter element disassembly port 19, the limiting fixing plate 111 and other components, and is not a limitation on the disassembly method.

[0026] More specifically, the left side plate 11, the right side plate 12, the bottom plate 13 and the top plate 14 can be understood in a broad sense. A flat plate can be used as the main structure, or a folded plate-shaped main structure can be used. The folded plate-shaped main structure can be a whole piece or a plurality of sheet metal parts spliced and fixed. In addition, the outside of the filter frame 10 can also be arranged with fixed connecting plates for various functional components (such as various sensors) according to actual needs. The filter element 20 can also be understood in a broad sense. For example, it can be various filter core blocks that can filter impurities and bacteria or a filter screen with a fixed frame. The first guide plate 17 and the second guide plate 18 can also be understood in a broad sense. It can be a chute structure that matches the end of the filter element 20 directly integrated on the first guide plate 17 and the second guide plate 18, or a chute structure that matches the end of the filter element 20 is formed between two adjacent first guide plates 17, and a chute structure that matches the end of the filter element 20 is formed between two adjacent second guide plates 18. The filter element disassembly and assembly port 19 can be an integral opening, or a partial opening corresponding to each group of filter elements 20 (one second filter element and one first filter element constitute a group). In the preferred embodiment, the right end face of the base plate 13 is provided with an avoidance notch 114 as a component of the filter element disassembly and assembly port 19. The area where the avoidance notch 114 is located is the channel for the filter element 20 to be inserted upward, and the spacing area between the avoidance notches 114 corresponds to forming a lug 115, which can also serve as a connecting base plate for the limiting fixing plate 111.

[0027] For specific implementation, please refer to Figures 4 to 7 The main structure of the duct air conditioner is an existing mature technology and can be implemented with reference to the existing technology. It includes a shell 30, an air-conditioning air inlet 31 is provided on the front of the shell 30, and an inspection port 32 is provided on the bottom of the shell 30. The inspection port 32 is equipped with an openable and closable inspection door. The air-conditioning air inlet 31 of the shell 30 is pre-fixed with the aforementioned duct air conditioner air inlet filter device, and the filter air inlet 15 of the duct air conditioner air inlet filter device is directed toward the air-conditioning air inlet 31, and the filter element disassembly and assembly port 19 is directed toward the inspection port 32. The fixing method of the duct air conditioner air inlet filter device is conventional technology, usually the filter frame 10 is fixed to the shell 30 by bolts. The setting method of the inspection door can also be implemented with reference to existing conventional technology, such as the common integral detachable inspection door, or an inspection door with one end rotatably set on the shell 30 and the other end detachably fixed. When the filter element 20 needs to be removed, first open the inspection door, and then refer to Figure 5 and Figure 6 , so that the limiting fixing piece 111 is in the first state in advance, at this time the second filter element can slide down along the second guide plate 18 and be taken out from the filter element disassembly port 19; after the second filter element is removed, then refer to Figure 7At this time, the first filter element can slide rightward along the first guide plate 17 to the area where the filter element removal opening 19 is located and be removed from the filter element removal opening 19. The installation process of the filter element 20 is the opposite. First, install the first filter element (through the filter element removal opening 19, snap it upward into the right end area of the first guide plate 17, then slide it leftward along the first guide plate 17 to the predetermined installation position), then install the second filter element (directly slide it upward along the second guide plate 18 to the predetermined installation position), and finally switch the limiting fixing plate 111 to the second state to prevent the second filter element from falling downward.

[0028] It is understood that the switch-toggle connector 110 can be configured in a variety of ways, as long as it can enable the position-limiting fixing plate 111 to switch between the first and second states. For example, the position-limiting fixing plate 111 can be directly provided in a detachable connection (when the position-limiting fixing plate 111 is removed, the position-limiting fixing plate 111 is in the first state; when the position-limiting fixing plate 111 is fixed, the position-limiting fixing plate 111 is in the second state). The position-limiting fixing plate 111 can also be installed in the form of a rotating shaft with a damping structure, and the position-limiting fixing plate 111 can be directly rotated to different positions to achieve switching between the first and second states. To ensure a simple and reliable structure and easy processing, manufacturing, and assembly, the switch-toggle connector 110 in the present invention is preferably a locking bolt, and the position-limiting fixing plate 111 has a bolt hole that matches the locking bolt. When the locking bolt is loosened, the position-limiting fixing plate 111 can freely rotate around the locking bolt using the bolt hole, thereby rotating the position-limiting fixing plate 111 to different positions to achieve switching between the first and second states. When the position-limiting fixing plate 111 is rotated to the second state, the locking bolt can be tightened to ensure the reliability of the position-limiting support structure. To improve practicality, each position-limiting fixing plate 111 is provided with two bolt holes. One of the bolt holes can be selected to connect the locking bolt according to actual conditions, and the other bolt hole is used as a backup.

[0029] To further reduce the number of fixed connectors, the present invention preferably uses at least some of the position-limiting fixing plates 111 to simultaneously provide position-limiting support for two adjacent second filter elements. For example, in the embodiment shown in the accompanying drawings of the present invention, only three position-limiting fixing plates 111 are designed, but five second filter elements can be simultaneously provided with position-limiting support.

[0030] To ensure a simple, reliable structure, and ease of fabrication, manufacturing, and assembly, multiple first and second filter elements are spaced apart along the front-to-back direction of the filter frame 10, and the first and second filter elements are arranged bilaterally symmetrically within the filter frame 10. In this solution, the first and second filter elements, located in the same vertical plane, have identical dimensions, facilitating batch fabrication. Furthermore, the symmetrical design helps ensure filtration efficiency and structural reliability. In this solution, the second guide plate 18 also guides the first filter element as it slides upward for insertion and downward for removal.

[0031] It is understandable that in some alternative embodiments, the first filter element may also be designed to be shorter, as long as it can meet the corresponding technical requirements for loading and unloading from the filter element assembly and disassembly port 19 .

[0032] In order to facilitate the removal of the first filter element by sliding it to the right from the first guide plate 17, a handle structure is provided at the right end of the first filter element. The "handle structure" can be understood in a broad sense and can be in various forms such as a buckle groove and a pull rope.

[0033] To further enhance structural reliability, at least a portion of the first guide plate 17 on the base plate 13 is fixedly connected to the right side plate 12 of the filter frame 10. Correspondingly, the first guide plate 17 on the base plate 13 can be designed to match the length of the first filter element only and does not necessarily have to be fixedly connected to the right side plate 12 of the filter frame 10. Because the filter frame 10 has a filter element removal and assembly port 19 reserved in the right area of the base plate 13, the lengthened first guide plate 17 (i.e., the first guide plate 17 fixedly connected to the right side plate 12 of the filter frame 10) can act as a reinforcing beam. It is understandable that the arrangement of the first guide plate 17 cannot interfere with the assembly path of the filter element 20. In this solution, the spacing area between adjacent first guide plates 17 should serve as a chute for matching the first filter element.

[0034] To further enhance structural reliability, the front end of the left panel 11 is connected to the front end of the right panel 12, and the rear end of the left panel 11 is connected to the rear end of the right panel 12, respectively, via fixed connecting plates 112. The lower surface of the top panel 14 is fixedly connected to the upper surface of the bottom panel 13 in the middle region in the left-right direction via a number of vertical support columns 113, which are spaced apart along the front-to-back direction of the filter frame 10. Any fixed connection methods not described in detail in this utility model can be implemented using conventional methods, such as screws or welding, and should be selected based on actual conditions.

Claims

1. An air inlet filter device for an air duct unit, comprising a filter frame (10) and a filter element (20), wherein the filter element (20) is installed in the filter frame (10), and is characterized in that: The filter frame (10) includes a left side plate (11), a right side plate (12), a bottom plate (13) and a top plate (14) fixedly connected together. The front of the filter frame (10) is a filter air inlet (15), and the back is a filter air outlet (16). The filter air inlet (15) and the filter air outlet (16) are arranged opposite to each other. The filter element (20) is installed in the interval area between the filter air inlet (15) and the filter air outlet (16). The filter element (20) includes a first filter element installed in the left area of the filter frame (10) and a second filter element installed in the right area of the filter frame (10). The upper surface of the bottom plate (13) and the lower surface of the top plate (14) are fixedly provided with first guide rail plates (17) arranged opposite to each other. The first guide rail plates (17) are horizontally extended in the left and right directions. The inner wall of the right side plate (12) is fixedly provided with a second guide rail plate (18) extending vertically. The filter frame (10) is provided with a filter element disassembly and assembly port (19) in the right area of the bottom plate (13). The bottom plate (13) is provided with a limit fixing plate (111) in the left area of the filter element disassembly and assembly port (19) through a switch switching connector (110). The limit fixing plate (111) has a function of allowing the filter element ( The filter element (20) is installed into the filter frame (10) through the filter element disassembly and assembly port (19) and is taken out of the filter frame (10) through the filter element disassembly and assembly port (19). The limiting fixing piece (111) has a second state for limiting and supporting the second filter element. The switch switching connecting piece (110) is used to realize the switching of the limiting fixing piece (111) between the first state and the second state. When the filter element (20) is installed, the limiting fixing piece (111) is in the first state in advance. The first filter element can be inserted into the right end area of the first guide plate (17) through the filter element disassembly and assembly port (19) and can be moved along the first guide plate (17). The rail plate (17) slides to the left and is inserted into a predetermined installation position, and the second filter element can slide upward along the second guide rail plate (18) through the filter element disassembly opening (19) and be inserted into the predetermined installation position, and at this time, the second filter element can prevent the first filter element from sliding to the right; when the filter element (20) is removed, the limiting fixing plate (111) is in the first state in advance, the second filter element can slide downward along the second guide rail plate (18) and be removed from the filter element disassembly opening (19), and the first filter element can slide to the right along the first guide rail plate (17) to the area where the filter element disassembly opening (19) is located and be removed from the filter element disassembly opening (19).

2. The air inlet filter device for an air duct unit according to claim 1, characterized in that: The switch switching connector (110) is a locking bolt, and the position limiting fixing piece (111) has a bolt through hole matching the locking bolt.

3. The air inlet filter device for an air duct unit according to claim 2, characterized in that: Each limiting fixing piece (111) is provided with two bolt through holes.

4. The air inlet filter device for an air duct unit according to claim 2, wherein: At least part of the limiting fixing piece (111) is used to simultaneously provide limiting support for two adjacent second filter elements.

5. The air inlet filter device for an air duct unit according to claim 1, wherein: A plurality of first filter elements and second filter elements are respectively arranged at intervals along the front-to-back direction of the filter frame (10), and the first filter elements and the second filter elements are arranged in a bilaterally symmetrical manner within the filter frame (10).

6. The air inlet filter device for an air duct unit according to claim 1, characterized in that: A handle structure is provided at the right end of the first filter element.

7. The air inlet filter device for an air duct unit according to claim 1, characterized in that: At least part of the first guide rail plate (17) on the bottom plate (13) is fixedly connected to the right side plate (12) of the filter frame (10), and two adjacent first guide rail plates (17) are combined to form a chute matching the first filter element.

8. The air inlet filter device for an air duct unit according to claim 1, characterized in that: The front end of the left side plate (11) and the front end of the right side plate (12), as well as the rear end of the left side plate (11) and the rear end of the right side plate (12) are connected respectively via fixed connecting plates (112).

9. The air inlet filter device for an air duct unit according to claim 1, characterized in that: The lower surface of the top plate (14) is fixedly connected to the upper surface of the bottom plate (13) in the middle area in the left-right direction through a plurality of vertical support columns (113), and the vertical support columns (113) are arranged at intervals along the front-back direction of the filter frame (10).

10. A ducted air conditioner comprising a housing (30), wherein the front of the housing (30) is provided with an air conditioning air inlet (31), characterized in that: The bottom surface of the shell (30) has an inspection port (32), and the inspection port (32) is equipped with an openable and closable inspection door. The air-conditioning air inlet (31) of the shell (30) is fixedly provided with an air duct air inlet filter device as described in any one of claims 1 to 9, and the filter air inlet (15) of the air duct air inlet filter device is directed toward the air-conditioning air inlet (31), and the filter element disassembly and assembly port (19) is directed toward the inspection port (32).

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