Air handling device and filter frame

Abstract

The application relates to an air treatment device and a filter frame. A filter frame for an air treatment device comprises: a plurality of frame units arranged in sequence; a first connecting piece; and a locking structure. At least one side of at least one frame unit in the plurality of frame units is locked and connected with an adjacent frame unit through the locking structure and the first connecting piece. The locking structure can be switched between a locked state, a first open state and a second open state. When the locking structure is in the locked state, the corresponding two frame units are locked and connected. Two frame units locked and connected through the locking structure and the first connecting piece are unlocked from the first connecting piece when the locking structure is in the first open state, and are unlocked from the first connecting piece when the locking structure is in the second open state. The filter frame reduces the number of locking structures, reduces the space occupied by the locking structures and simplifies the structure of the filter frame.

Description

Technical Field

[0001] This application relates to the field of air handling, and in particular to an air handling device and a filter frame. Background Technology

[0002] As people's living standards improve, air handling equipment is being used more and more widely in daily life. Some air handling equipment is equipped with filters (pre-filters, activated carbon filters, etc.), which are generally installed on the air handling equipment via filter frames. To facilitate filter removal and replacement, the filter frame is often divided into multiple adjacent filter units. However, currently, each filter unit needs to have its own individual locking structure to achieve individual removal, which is inefficient and the locking structure occupies a lot of space, hindering the lightweight design of the equipment. Utility Model Content

[0003] Therefore, it is necessary to provide an air handling unit and filter frame that can both allow adjacent frame units to be unlocked individually and reduce space occupation.

[0004] On one hand, this application provides a filter frame for an air handling device; the filter frame includes: a plurality of sequentially adjacent frame units, a first connector, and a locking structure. Among the plurality of frame units, at least one of the frame units has at least one side locked to an adjacent frame unit via the locking structure and the first connector. The locking structure can switch between a locked state, a first open state, and a second open state; when the locking structure is in the locked state, corresponding two frame units are locked together; of the two frame units locked together via the locking structure and the first connector, one is unlocked from the first connector when the locking structure is in the first open state, and the other is unlocked from the first connector when the locking structure is in the second open state.

[0005] Optionally, the lock structure includes an operating member disposed on the first connector; the operating member is movable to switch the lock structure between a locked state, a first open state, and a second open state.

[0006] Optionally, two frame units are configured to be locked and connected to the first connector via the locking structure, namely a first frame unit and a second frame unit; the first frame unit has a first side that is locked and connected to the first connector; the second frame unit has a second side that is locked and connected to the first connector; the locking structure further includes a first latching unit and a second latching unit;

[0007] The first latching unit includes a first latching element, a first fastener, and a first trigger. The first latching element is movable relative to the first connecting element to switch between a first engaged position and a first disengaged position. The first fastener is fixedly disposed on a first side of the first frame unit and matches the first latching element. The first trigger is drively connected to the operating element. The operating element moves to drive the first latching element from the first engaged position to the first disengaged position via the first trigger, thereby unlocking the first fastener from the first latching element and switching the lock structure from a locked state to the first open state.

[0008] The second latching unit includes a second latching member, a second fastener, and a second trigger. The second latching member is movable relative to the first connecting member to switch between a second engaged position and a second disengaged position. The second fastener is fixedly disposed on the second side of the second frame unit and matches the second latching member. The second trigger is drively connected to the operating member. The operating member moves to drive the second latching member from the second engaged position to the second disengaged position via the second trigger, thereby unlocking the second fastener from the second latching member and switching the lock structure from a locked state to a second open state.

[0009] Optionally, the first trigger is fixedly connected to the operating element; the second trigger is fixedly connected to the operating element.

[0010] Optionally, the first latching unit further includes a first reset member; the first reset member is used to provide a reset force for the first latching member to move to a first engaging position; and / or, the second latching unit further includes a second reset member; the second reset member is used to provide a reset force for the second latching member to move to a second engaging position.

[0011] Optionally, the operating element is movable to switch between a first position, a second position, and a third position; the third position is located between the first position and the second position; when the operating element is in the first position, the lock structure is in a first open state; when the operating element is in the second position, the lock structure is in a second open state; when the operating element is in the third position, the lock structure is in a locked state.

[0012] Optionally, in at least one of the lock structures, the number of the first latching units is at least two, and the at least two first latching units are arranged along the direction of the first side of the first frame unit. In at least one of the lock structures, the number of the second latching units is at least two, and the at least two second latching units are arranged along the direction of the second side of the second frame unit.

[0013] Optionally, when the operating member switches between the first position, the second position, and the third position, the direction of movement is the first direction. The first card can move along the second direction to switch between a first engaged position and a first disengaged position; the first card has a first contact surface, and the first trigger has a second contact surface; when the operating member moves from the third position to the first position, the first contact surface and the second contact surface are engaged; the angle between the first contact surface and the first direction is greater than zero; the angle between the first contact surface and the second direction is greater than zero.

[0014] The second card can move along a third direction to switch between a second engaged position and a second disengaged position; the second card has a third contact surface, and the second trigger has a fourth contact surface; when the operating member moves from the third position to the second position, the third contact surface and the fourth contact surface are engaged; the angle between the third contact surface and the first direction is greater than zero; the angle between the third contact surface and the third direction is greater than zero.

[0015] Optionally, the first trigger member is further provided with a first clearance groove; the first clearance groove is located on one side of the second contact surface; during the process of the second locking member moving from the second engaging position to the second non-engaging position, the first engaging surface of the first locking member can be partially inserted into the first clearance groove under the action of the first reset member;

[0016] The second trigger is also provided with a second clearance groove; the second clearance groove is located on one side of the fourth contact surface; during the process of the first card moving from the first engaging position to the first non-engaging position, the third engaging surface of the second card can be partially inserted into the second clearance groove under the action of the second reset member.

[0017] Optionally, the height direction of the frame unit is set as the fourth direction; the number of the first fastener is at least one, and the number of the second fastener is at least one; the number of the first fastener and the number of the second fastener are the same and correspond one-to-one; along the fourth direction, the height of the first fastener and the corresponding second fastener are the same.

[0018] Optionally, the first latching unit further includes a first push-out member and a first retaining member; the first push-out member is convexly connected to the operating member; after the first latching member moves to the first non-engaged position, the operating member can continue to move to push the first latching member away from the engaged position through the first push-out member, and the first retaining member abuts against the first latching member so that the first latching member is held in the first non-engaged position;

[0019] The second latching unit further includes a second push-out member and a second retaining member; the second push-out member is convexly connected to the operating member; after the second latching member moves to the second non-engaged position, the operating member can continue to move to push the second fastener out of the engaged position through the second push-out member, and the second retaining member abuts against the second latching member so that the second latching member is held in the second non-engaged position.

[0020] Optionally, there are two frame units connected in a ring; each frame unit is locked to the corresponding side of the other frame unit via a locking structure on both sides.

[0021] Optionally, when both sides of the same frame unit are unlocked, the operating directions of the two lock structures may be the same or different.

[0022] Optionally, the operating components of the two lock structures can be operated independently; or, when one of the lock structures switches from the locked state to the first open state or the second open state, it can be linked with the other lock structure so that the other lock structure switches from the locked state to the first open state or the second open state.

[0023] Optionally, the number of frame units is two, and the two frame units are arranged symmetrically.

[0024] Optionally, the number of frame units is two; the central angles of the two frame units are different along the circumference of the filter frame.

[0025] On the other hand, this application also provides an air handling device, including the filter frame provided in this application.

[0026] The various embodiments provided in this application include a lock structure with two open states: a first open state and a second open state. By controlling the different open states of a single lock structure, adjacent locked frame units can be unlocked respectively. Furthermore, the lock structure can control the side locking and unlocking of two adjacent frame units, achieving "one lock, multiple controls," reducing the number of lock structures used, decreasing the space occupied by the lock structure, and simplifying the structure of the filter frame.

[0027] Furthermore, the operating element is movable, allowing the lock structure to switch between a locked state, a first open state, and a second open state. Thus, the user can adjust the state of the lock structure by operating the operating element.

[0028] In addition, the first and second triggers are fixedly connected to the operating member, which makes the transmission accuracy between the operating member and the first and second triggers high, thereby improving the operating accuracy of the lock structure.

[0029] Furthermore, the first reset member provides a reset force to the first locking member when it moves to the first engaged position, so that the first locking member remains in the first engaged position without external force, thereby making the first side of the first frame unit more stably locked. Similarly, the second reset member provides a reset force to the second locking member when it moves to the second engaged position, so that the second locking member remains in the second engaged position without external force, thereby making the second side of the second frame unit more stably locked.

[0030] In addition, the direction of movement of the operating element when the lock structure switches from the locked state to the first open state is opposite to the direction of movement of the operating element when the lock structure switches from the locked state to the second open state, reducing the risk of operational errors.

[0031] Furthermore, the two first snap-fit ​​units are arranged along the direction of the first side of the first frame unit to make the force on the first side of the first frame unit more balanced, reducing the risk of stress concentration and deformation of the first frame unit. The two second snap-fit ​​units are arranged along the direction of the second side of the second frame unit to make the force on the second side of the second frame unit more balanced, reducing the risk of stress concentration and deformation of the second frame unit.

[0032] Furthermore, when the operating member moves from the third position to the first position, the first trigger and the first locking member are engaged through the first and second contact surfaces, meaning the first trigger and the first locking member are in surface contact, reducing the risk of stress concentration in the first trigger and the first locking member. Additionally, the contact between the first trigger and the first locking member reduces the risk of the first locking member tilting relative to the second direction. Similarly, when the operating member moves from the third position to the second position, the contact between the second trigger and the second locking member reduces the risk of stress concentration in both the second trigger and the second locking member, and also reduces the risk of the second locking member tilting relative to the third direction.

[0033] Furthermore, during the movement of the second locking member from the second engaged position to the second disengaged position, the first engaging surface of the first locking member can be partially inserted into the first clearance groove under the action of the first reset member. This reduces the reset force exerted by the first reset member on the first locking member, thereby increasing the service life of the first reset member and the first trigger member. Additionally, the reduced reset force exerted by the first reset member on the first locking member lowers the pressure between the first locking member and the first trigger member, further increasing their service life. Moreover, the partial insertion of the first engaging surface of the first locking member into the first clearance groove also reduces the contact area between the first locking member and the first trigger member, minimizing wear on both. Similarly, the provision of the second reset member and the second clearance groove increases the service life of the second reset member, the second locking member, and the second trigger member, reduces the contact area between the second locking member and the second trigger member, and minimizes wear on both.

[0034] Furthermore, the first retaining member keeps the first locking member in the first non-engaged position, thereby preventing the first locking member from obstructing the first fastener when the first ejector pushes the first fastener away from the engaged position, allowing the first fastener to leave the engaged position more smoothly.

[0035] Furthermore, the second retaining member keeps the second locking member in the second non-engaged position, thereby preventing the second locking member from obstructing the second fastener when the second ejector pushes the second fastener away from the engaged position, allowing the second fastener to leave the engaged position more smoothly.

[0036] In addition, the operating components of the two lock structures are operated independently, making it easy to select the corresponding side of the corresponding frame unit for unlocking as needed. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of a filter frame provided in an embodiment of this application.

[0038] Figure 2 for Figure 1 A schematic diagram of the first connecting member and part of the lock structure.

[0039] Figure 3 for Figure 1 A schematic diagram of the first frame unit (frame unit) and part of the lock structure.

[0040] Figure 4 for Figure 1 A schematic diagram of the second frame unit (frame unit) and part of the lock structure.

[0041] Figure 5 for Figure 1 A schematic diagram of the connection structure between the first frame unit (frame unit) and the lock structure.

[0042] Figure 6 for Figure 5 A schematic diagram of the structure shown from another perspective.

[0043] Figure 7 for Figure 6 A sectional view along line AA.

[0044] Figure 8 for Figure 7 A magnified view of part M.

[0045] Figure 9 for Figure 5 A schematic diagram of the first fastener and the first locking element in the central locking structure when they are engaged.

[0046] Figure 10 for Figure 9 A magnified view of N in the middle.

[0047] Figure 11 for Figure 10 A schematic diagram of the structure of the first card component.

[0048] Figure 12 for Figure 11 A structural schematic diagram of the first card from another perspective.

[0049] Figure 13 for Figure 1 A partial structural diagram of the central locking structure.

[0050] Figure 14 for Figure 13 A schematic diagram of the structure shown from another perspective.

[0051] Figure 15 for Figure 5 A schematic diagram of the installation structure of the first card component.

[0052] Figure 16 for Figure 15 BB-direction sectional view.

[0053] Figure 17 for Figure 1 A schematic diagram of the connection structure between the second frame unit (frame unit) and the lock structure.

[0054] Figure 18 for Figure 17 A schematic diagram of the structure shown from another perspective.

[0055] Figure 19 for Figure 18 CC-direction sectional view.

[0056] Figure 20 for Figure 19 A magnified view of part P.

[0057] Figure 21 for Figure 17 A schematic diagram of the second fastener and the second locking element in the central locking structure when they are engaged.

[0058] Figure 22 for Figure 21 A magnified view of a portion of Q.

[0059] Figure 23 for Figure 22 A schematic diagram of the structure of the second card component.

[0060] Figure 24 for Figure 23 A structural schematic diagram of the second card from another perspective.

[0061] Figure 25 for Figure 1 A partial structural diagram of the central locking structure.

[0062] Figure 26 for Figure 25 A schematic diagram of the structure shown from another perspective.

[0063] Figure 27 for Figure 15 DD section view.

[0064] Figure 28 for Figure 1 A schematic diagram of the structure shown from another perspective.

[0065] Figure 29 for Figure 28 EE-directed sectional view.

[0066] Explanation of reference numerals in the attached figures

[0067] 100, Filter frame; 110, Frame unit; 110a, First frame unit; 110b, Second frame unit; 111, First side; 112, Second side; 120, First connector; 130, Locking structure; 131, Operating component; 132, First latching unit; 132a, First latching component; 132e, First mating surface; 132n, Sixth mating surface; 132p, First limiting component; 132b, First fastener; 132c, First trigger component; 132f, Second mating surface; 132g, First clearance groove; 132d, First reset component; 132h, First ejector component; 132k, First retainer component; 132m, Fifth mating surface; 133, Second snap-fit ​​unit; 133a, Second snap-fit ​​piece; 133e, Third mating surface; 133n, Eighth mating surface; 133b, Second fastener; 133c, Second trigger piece; 133f, Fourth mating surface; 133g, Second clearance groove; 133d, Second reset piece; 133h, Second push-out piece; 133k, Second retaining piece; 133m, Seventh mating surface; 133p, Second limiting piece; 134, Second connecting piece; 200, Air duct; aa, First direction; bb, Second direction; cc, Third direction; dd, Fourth direction; ee, Fifth direction; ff, Sixth direction. Detailed Implementation

[0068] To make the technical solution and beneficial effects of this application more apparent and understandable, a detailed description is provided below by listing specific embodiments. The accompanying drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application pertains.

[0069] See Figures 1 to 29This application provides a filter frame 100 for use in an air handling device. The filter frame 100 includes a plurality of sequentially adjacent frame units 110, a first connector 120, and a locking structure 130. At least one of the frame units 110 has at least one side locked to an adjacent frame unit 110 via the locking structure 130 and the first connector 120. The locking structure 130 can switch between a locked state, a first open state, and a second open state. When the locking structure 130 is in the locked state, corresponding two frame units 110 are locked together. Of the two frame units 110 locked together via the locking structure 130 and the first connector 120, one is unlocked from the first connector 120 when the locking structure 130 is in the first open state, and the other is unlocked from the first connector 120 when the locking structure 130 is in the second open state.

[0070] The aforementioned filter frame 100 has two open states: a first open state and a second open state. By controlling the different open states of the lock structure 130, adjacent sides of locked adjacent frame units 110 can be unlocked respectively. The lock structure 130 can control the locking and unlocking of the sides of two adjacent frame units 110, achieving "one lock, multiple controls," reducing the number of lock structures 130 used, reducing the space occupied by the lock structures 130, and simplifying the structure of the filter frame 100.

[0071] There are two or more filter units 110, and a locking structure 130 may be provided on the adjacent sides of some or all of the adjacent frame units 110. The number of locking structures 130 and filter units 110 is not limited here.

[0072] It is understood that the first connector 120 is used to lock the frame unit 110. It is also understood that when the filter frame 100 is used in an air handling unit, the first connector 120 can be fixed to other structures of the air handling unit.

[0073] Specifically, in this embodiment, the first connector 120 is disposed between the two corresponding frame units 110. It is understood that in other embodiments, the first connector may be disposed in other locations to achieve locking of the two frame units. For example, in some embodiments, the first connector may be disposed on the top or bottom side of the two corresponding frame units; in others, the first connector is partially disposed between the two corresponding frame units and partially disposed on the top or bottom side of the two corresponding frame units; and in still others, the first connector is disposed on the inner or outer side of the two corresponding frame units.

[0074] For details, see Figure 1 and Figure 2The lock structure 130 includes an operating member 131 disposed on the first connecting member 120. The operating member 131 is movable to switch the lock structure 130 between a locked state, a first open state, and a second open state. Thus, the user can adjust the state of the lock structure 130 by operating the operating member 131.

[0075] See Figures 1 to 26 Specifically, in this embodiment, two frame units 110 are configured to be locked and connected to the first connecting member 120 via the locking structure 130, namely the first frame unit 110a and the second frame unit 110b. The first frame unit 110a has a first side 111 locked and connected to the first connecting member 120. The second frame unit 110b has a second side 112 locked and connected to the first connecting member 120. The locking structure 130 also includes a first latching unit 132 and a second latching unit 133. It is understood that, for ease of explanation, this embodiment only uses two frame units 110 as an example, and the number of frame units 110 is not limited here; it can be three or more.

[0076] For details, see Figure 3 , Figures 5 to 16 In this embodiment, the first latching unit 132 includes a first latching member 132a, a first fastener 132b, and a first trigger member 132c. The first latching member 132a is movable relative to the first connecting member 120 to switch between a first engaged position and a first disengaged position. The first fastener 132b is fixedly disposed on the first side 111 of the first frame unit 110a and matches the first latching member 132a. The first trigger member 132c is drively connected to the operating member 131. The operating member 131 moves to drive the first latching member 132a from the first engaged position to the first disengaged position via the first trigger member 132c, thereby unlocking the first fastener 132b from the first latching member 132a and switching the lock structure 130 from the locked state to the first open state.

[0077] Understandably, when the first locking piece 132a is in the first engaged position, and the first locking piece 132a is engaged with the first fastener 132b, the lock structure 130 is in a locked state. When the first locking piece 132a is in the first disengaged position, the first locking piece 132a and the first fastener 132b are not engaged, the first fastener 132b and the first locking piece 132a are unlocked, and the lock structure 130 is in the first open state, that is, the first frame unit 110a is unlocked.

[0078] For details, see Figure 4 , Figures 17 to 27In this embodiment, the second latching unit 133 includes a second latching member 133a, a second fastener 133b, and a second trigger member 133c. The second latching member 133a is movable relative to the first connecting member 120 to switch between a second engaged position and a second disengaged position. The second fastener 133b is fixedly disposed on the second side 112 of the second frame unit 110b and matches the second latching member 133a. The second trigger member 133c is drively connected to the operating member 131. The operating member 131 moves to drive the second latching member 133a from the second engaged position to the second disengaged position via the second trigger member 133c, thereby unlocking the second fastener 133b from the second latching member 133a and switching the lock structure 130 from a locked state to a second open state.

[0079] Understandably, when the second locking piece 133a is in the second engaged position, and the second locking piece 133a is engaged with the second fastener 133b, the lock structure 130 is in a locked state. When the second locking piece 133a is in the second unengaged position, the second locking piece 133a and the second fastener 133b are not engaged, the second fastener 133b and the second locking piece 133a are unlocked, and the lock structure 130 is in a second open state, that is, the second frame unit 110b is unlocked.

[0080] It is understood that when the first side 111 of the first frame unit 110a and the second side 112 of the second frame unit 110b are locked together by the locking structure 130, the locking structure 130 is in a locked state, the first latch 132a is in a first engaged position, and the first latch 132a is engaged with the first fastener 132b; and the second latch 133a is in a second engaged position, and the second latch 133a is engaged with the second fastener 133b. When the first side 111 of the first frame unit 110a and the second side 112 of the second frame unit 110b are locked together by the locking structure 130, if the locking structure 130 switches from a locked state to a first open state, the first latch 132a is in a first non-engaged position, so that the first side 111 of the first frame unit 110a is unlocked; the second latch 133a is in a second engaged position, so that the second side 112 of the second frame unit 110b remains locked to the first connector 120. When the first side 111 of the first frame unit 110a and the second side 112 of the second frame unit 110b are locked together by the locking structure 130, if the locking structure 130 switches from the locked state to the second open state, the second latch 133a is in the second non-engaged position, so that the second side 112 of the second frame unit 110b is unlocked; the first latch 132a is in the first engaged position, so that the first side 111 of the first frame unit 110a remains locked to the first connector 120.

[0081] Furthermore, when the first side 111 of the first frame unit 110a and the second side 112 of the second frame unit 110b are locked together by the locking structure 130, if the locking structure 130 switches from the locked state to the first open state and then to the second open state, the first side 111 of the first frame unit 110a and the second side 112 of the second frame unit 110b will be unlocked sequentially. Similarly, when the first side 111 of the first frame unit 110a and the second side 112 of the second frame unit 110b are locked together by the locking structure 130, if the locking structure 130 switches from the locked state to the second open state and then to the first open state, the second side 112 of the second frame unit 110b and the first side 111 of the first frame unit 110a will be unlocked sequentially.

[0082] In this embodiment, the first trigger 132c is fixedly connected to the operating member 131, which makes the transmission accuracy between the operating member 131 and the first trigger 132c higher, thereby improving the operating accuracy of the lock structure 130.

[0083] In this embodiment, the second trigger 133c is fixedly connected to the operating member 131, which makes the transmission accuracy between the operating member 131 and the second trigger 133c higher, thereby improving the operating accuracy of the lock structure 130.

[0084] In one embodiment, both the first trigger 132c and the second trigger 133c are fixedly connected to the operating member 131. Therefore, the movement of the operating member 131 will cause the first trigger 132c and the second trigger 133c to move synchronously. It can be understood that during the process where the operating member 131 moves to drive the first card 132a from the first engaged position to the first disengaged position via the first trigger 132c, although the second trigger 133c also moves with the operating member 131, it does not trigger a change in the second engaged position of the second card 133a. Similarly, during the process where the operating member 131 moves to drive the second card 133a from the second engaged position to the second disengaged position via the second trigger 133c, although the first trigger 132c also moves with the operating member 131, it does not trigger a change in the first engaged position of the first card 132a.

[0085] In this embodiment, the first trigger 132c and the operating member 131 are integrally formed. On the one hand, this improves the transmission accuracy between the operating member 131 and the first trigger 132c. On the other hand, no other structure is needed to achieve a fixed connection between the first trigger 132c and the operating member 131, making the lock structure 130 simpler, reducing the installation difficulty of the lock structure 130, and improving the installation efficiency of the lock structure 130.

[0086] In this embodiment, the second trigger 133c and the operating member 131 are integrally formed. On the one hand, this improves the transmission accuracy between the operating member 131 and the second trigger 133c. On the other hand, no other structure is needed to achieve a fixed connection between the second trigger 133c and the operating member 131, making the lock structure 130 simpler, reducing the installation difficulty of the lock structure 130, and improving the installation efficiency of the lock structure 130.

[0087] In this embodiment, the lock structure 130 further includes a second connecting member 134. The operating member 131 is fixedly connected to the second connecting member 134. The second connecting member 134 is fixedly connected to both the first trigger member 132c and the second trigger member 133c. In other words, the operating member 131 is fixedly connected to the first trigger member 132c and the second trigger member 133c through the second connecting member 134. The arrangement of the second connecting member 134 facilitates the design of the positions of the first trigger member 132c and the second trigger member 133c, avoiding interference with other structures in the lock structure 130 or with other structures in the air handling equipment. Furthermore, by reasonably setting the positions of the first trigger member 132c and the second trigger member 133c, the first trigger member 132c and the second trigger member 133c can be placed in appropriate positions, so that the size and shape of the first trigger member 132c and the second trigger member 133c can be reasonably set, so that the first trigger member 132c and the second trigger member 133c have better structural strength and are easier to drive and connect with the corresponding card.

[0088] See Figure 16 In this embodiment, the first latching unit 132 further includes a first reset member 132d. The first reset member 132d is used to provide a reset force for the first latch 132a to move to the first engaging position, so that the first latch 132a is held in the first engaging position without the action of external force, and the first side 111 of the first frame unit 110a is more stably locked.

[0089] See Figure 27 In this embodiment, the second latching unit 133 further includes a second reset member 133d. The second reset member 133d is used to provide a reset force for the second latch 133a to move to the second engaging position, so that the second latch 133a is held in the second engaging position without the action of external force, and the second side 112 of the second frame unit 110b is more stably locked.

[0090] Specifically, in this embodiment, the operating element 131 is movable to switch between a first position, a second position, and a third position. The third position is located between the first and second positions. When the operating element 131 is in the first position, the lock structure 130 is in a first open state. When the operating element 131 is in the second position, the lock structure 130 is in a second open state. When the operating element 131 is in the third position, the lock structure 130 is in a locked state. The operating element 131 moves by moving, which is simple. The direction of movement of the operating element 131 when the lock structure 130 switches from the locked state to the first open state is opposite to the direction of movement of the operating element 131 when the lock structure 130 switches from the locked state to the second open state, reducing the risk of operational errors.

[0091] It is understood that in some other embodiments, the first position may be located between the second and third positions, or the second position may be located between the first and third positions. In other words, in some other embodiments, the direction of movement of the operating member 131 when the lock structure 130 switches from the locked state to the first open state may be the same as the direction of movement of the operating member 131 when the lock structure 130 switches from the locked state to the second open state.

[0092] In this specific embodiment, the movement trajectory of the operating element 131 is a straight line. It is understood that in other embodiments, the movement trajectory of the operating element 131 may also be a regular or irregular shape such as an arc.

[0093] It is understood that in some other embodiments, the movement of the operating element is not limited to movement, but may also be rotation, or both movement and rotation may occur simultaneously.

[0094] See Figure 3 and Figure 9 In this embodiment, the number of first latching units 132 in the lock structure 130 is two. The two first latching units 132 are arranged along the direction of the first side 111 of the first frame unit 110a, so that the first side 111 of the first frame unit 110a is more evenly stressed, reducing the risk of stress concentration and the risk of deformation of the first frame unit 110a.

[0095] In this specific embodiment, the direction of the first side 111 is the same as the direction of movement of the operating member 131. It is understood that in other embodiments, the direction of the first side and the direction of movement of the operating member may be different.

[0096] It is understood that in some other embodiments, the number of first latching units in the lock structure may be more than two, and the multiple first latching units are arranged along the direction of the first side of the first frame unit.

[0097] It is understood that in some other embodiments, the number of first latching units in the partial locking structure may be at least two, and at least two first latching units may be arranged along the direction of the first side of the first frame unit.

[0098] See Figure 4 and Figure 21 In this embodiment, the number of second latching units 133 in the lock structure 130 is two. The two second latching units 133 are arranged along the direction of the second side 112 of the second frame unit 110b, so that the second side 112 of the second frame unit 110b is more evenly stressed, reducing the risk of stress concentration and the risk of deformation of the second frame unit 110b.

[0099] In this specific embodiment, the direction of the first side 111 is the same as the direction of movement of the operating member 131. It is understood that in other embodiments, the direction of the second side may be different from the direction of movement of the operating member.

[0100] It is understood that in some other embodiments, the number of second latching units in the lock structure may be more than two, and the multiple second latching units are arranged along the direction of the second side of the second frame unit.

[0101] It is understood that in some other embodiments, the number of second latching units may be at least two in only part of the locking structure, and at least two second latching units may be arranged along the direction of the second side of the second frame unit.

[0102] For ease of description, when the operating component 131 switches between the first position, the second position, and the third position, the direction of movement is the first direction aa.

[0103] See Figures 5 to 14 In this embodiment, the first locking member 132a can move along the second direction bb to switch between a first engaged position and a first disengaged position. The first locking member 132a has a first contact surface 132e, and the first trigger member 132c has a second contact surface 132f. When the operating member 131 moves from the third position to the first position, the first contact surface 132e and the second contact surface 132f are engaged. The angle between the first contact surface 132e and the first direction aa is greater than zero. The angle between the first contact surface 132e and the second direction bb is greater than zero. Therefore, when the operating member 131 moves from the third position to the first position, it can drive the first trigger member 132c to move along the first direction aa, thereby driving the first locking member 132a to move along the second direction bb.

[0104] Furthermore, when the operating member 131 moves from the third position to the first position, the first trigger member 132c and the first locking member 132a are engaged through the first contact surface 132e and the second contact surface 132f, that is, the first trigger member 132c and the first locking member 132a are in surface contact, reducing the risk of stress concentration between the first trigger member 132c and the first locking member 132a. In addition, the surface contact between the first trigger member 132c and the first locking member 132a reduces the risk of the first locking member 132a tilting relative to the second direction bb.

[0105] See Figures 17 to 26 In this embodiment, the second card 133a can move along the third direction cc to switch between a second engaged position and a second disengaged position. The second card 133a has a third contact surface 133e, and the second trigger 133c has a fourth contact surface 133f. When the operating member 131 moves from the third position to the second position, the third contact surface 133e and the fourth contact surface 133f are engaged. The angle between the third contact surface 133e and the first direction aa is greater than zero. The angle between the third contact surface 133e and the third direction cc is greater than zero. Therefore, when the operating member 131 moves from the third position to the second position, it can drive the second trigger 133c to move along the first direction aa, thereby driving the second card 133a to move along the third direction cc.

[0106] Furthermore, when the operating member 131 moves from the third position to the second position, the second trigger member 133c and the second locking member 133a are engaged through the third contact surface 133e and the fourth contact surface 133f, that is, the second trigger member 133c and the second locking member 133a are in surface contact, reducing the risk of stress concentration between the second trigger member 133c and the second locking member 133a. In addition, the surface contact between the second trigger member 133c and the second locking member 133a reduces the risk of the second locking member 133a tilting relative to the third party (cc).

[0107] See Figures 5 to 14In this embodiment, the first trigger 132c is further provided with a first clearance groove 132g. The first clearance groove 132g is located on one side of the second mating surface 132f. During the process of the second locking member 133a moving from the second engaging position to the second non-engaging position, the first engaging surface of the first locking member 132a can be partially inserted into the first clearance groove 132g under the action of the first reset member 132d, so as to reduce the reset force of the first reset member 132d on the first locking member 132a and improve the service life of the first reset member 132d and the first trigger 132c. In addition, the reduction of the reset force of the first reset member 132d on the first locking member 132a reduces the pressure between the first locking member 132a and the first trigger 132c, thereby improving the service life of the first locking member 132a and the first trigger 132c. In addition, the first engaging surface of the first card 132a is inserted into the first clearance groove 132g, which can reduce the contact area between the first card 132a and the first trigger 132c, thereby reducing wear on the first card 132a and the first trigger 132c.

[0108] See Figures 17 to 26 In this embodiment, the second trigger 133c is further provided with a second clearance groove 133g. The second clearance groove 133g is located on one side of the fourth mating surface 133f. During the process of the first locking member 132a moving from the first engaging position to the first disengaged position, the third engaging surface of the second locking member 133a can be partially inserted into the second clearance groove 133g under the action of the second reset member 133d, so as to reduce the reset force of the second reset member 133d on the second locking member 133a and improve the service life of the second reset member 133d and the second trigger 133c. In addition, the reduction of the reset force of the second reset member 133d on the second locking member 133a reduces the pressure between the second locking member 133a and the second trigger 133c, thereby improving the service life of the second locking member 133a and the second trigger 133c. Furthermore, the third engaging surface of the second card 133a is inserted into the second clearance groove 133g, which can reduce the contact area between the second card 133a and the second trigger 133c, thereby reducing wear on the second card 133a and the second trigger 133c.

[0109] In this embodiment, the second direction bb and the third direction cc are co-directional. It is understood that in other embodiments, the second direction and the third direction may not be co-directional.

[0110] In this embodiment, both the second direction bb and the third direction cc are perpendicular to the first direction aa. It is understood that in other embodiments, at least one of the second direction bb and the third direction cc may not be perpendicular to the first direction aa.

[0111] See Figure 29The height direction of frame unit 110 is set as the fourth direction dd. There is at least one first fastener 132b and at least one second fastener 133b. The number of first fasteners 132b and second fasteners 133b is the same, and they correspond one-to-one. Along the fourth direction dd, the heights of the first fasteners 132b and their corresponding second fasteners 133b are the same. Therefore, the forces on the first frame unit 110a and the second frame unit 110b are symmetrical, reducing the risk of deformation for both.

[0112] In this embodiment, the fourth direction dd is co-directional with the first direction aa. It is understood that in other embodiments, the fourth direction and the first direction may not be co-directional.

[0113] See Figures 5 to 14 In this embodiment, the first latching unit 132 further includes a first push-out member 132h and a first retaining member 132k. The first push-out member 132h is convexly connected to the operating member 131. After the first latching member 132a moves to the first non-engaged position, the operating member 131 can continue to move, so as to push the first fastener 132b away from the latching position through the first push-out member 132h, and the first retaining member 132k abuts against the first latching member 132a, so that the first latching member 132a is held in the first non-engaged position. It can be understood that the setting of the first push-out member 132h causes the first fastener 132b to deviate from the first latching member 132a, which helps to unlock the first side 111 of the first frame unit 110a. The first retaining member 132k keeps the first locking member 132a in the first non-engaged position, thereby preventing the first locking member 132a from blocking the first fastener 132b when the first ejector 132h pushes the first fastener 132b away from the engaged position, allowing the first fastener 132b to leave the engaged position more smoothly.

[0114] Specifically, in this embodiment, the first pusher 132h pushes the first fastener 132b to move along the fifth direction ee. More specifically, the fifth direction ee is perpendicular to the second direction bb. It is understood that in some other embodiments, the fifth direction and the second direction may not be perpendicular.

[0115] See Figure 9 and Figure 10 In this embodiment, the first fastener 132b is in surface contact with the first clip 132a, and the contact surface is perpendicular to the fifth direction ee, so as to reduce the stress concentration at the contact position of the first fastener 132b and the first clip 132a and improve the service life of the first fastener 132b and the first clip 132a.

[0116] See Figures 17 to 26In this embodiment, the second latching unit 133 further includes a second push-out member 133h and a second retaining member 133k. The second push-out member 133h is tractively connected to the operating member 131. After the second latching member 133a moves to the second non-engaged position, the operating member 131 can continue to move, so as to push the second fastener 133b out of the engaged position through the second push-out member 133h, and the second retaining member 133k abuts against the second latching member 133a, so that the second latching member 133a is held in the second non-engaged position. It can be understood that the setting of the second push-out member 133h causes the second fastener 133b to deviate from the second latching member 133a, which helps to unlock the second side 112 of the second frame unit 110b. The second retainer 133k keeps the second locking member 133a in the second non-engaged position, thereby preventing the second locking member 133a from blocking the second fastener 133b when the second pusher 133h pushes the second fastener 133b away from the engaged position, allowing the second fastener 133b to leave the engaged position more smoothly.

[0117] Specifically, in this embodiment, the second pusher 133h pushes the second fastener 133b to move along the sixth direction ff. More specifically, the sixth direction ff is perpendicular to the third direction cc. It is understood that in some other embodiments, the sixth direction may not be perpendicular to the third direction.

[0118] See Figure 21 and Figure 22 In this embodiment, the second fastener 133b is in surface contact with the second clip 133a, and the contact surface is perpendicular to the sixth direction ff, so as to reduce the stress concentration at the contact position of the second fastener 133b and the second clip 133a and improve the service life of the second fastener 133b and the second clip 133a.

[0119] See Figures 5 to 14 In this embodiment, the first ejector 132h is fixedly connected to the operating member 131. The first retainer 132k is fixedly connected to the operating member 131. Therefore, the operating member 131 can move synchronously with the first ejector 132h and the first retainer 132k. It is understood that in other embodiments, the operating member and the first ejector can be connected via other transmission methods, and the operating member and the first retainer can also be connected via other transmission methods.

[0120] Specifically, in this embodiment, both the first push-out member 132h and the first retaining member 132k are fixedly connected to the operating member 131 via the second connecting member 134. This facilitates the design of the positions of the first push-out member 132h and the first retaining member 132k, avoiding interference with other structures in the lock structure 130. Furthermore, by reasonably setting the positions of the first push-out member 132h and the first retaining member 132k, their size and shape can be appropriately determined.

[0121] In this embodiment, the first push-out member 132h and the operating member 131 are integrally formed. On the one hand, this improves the transmission accuracy between the operating member 131 and the first push-out member 132h. On the other hand, no other structure is needed to achieve a fixed connection between the first push-out member 132h and the operating member 131, making the lock structure 130 simpler, reducing the installation difficulty of the lock structure 130, and improving the installation efficiency of the lock structure 130.

[0122] In this embodiment, the first retaining member 132k and the operating member 131 are integrally formed. On the one hand, this improves the transmission accuracy between the operating member 131 and the first retaining member 132k. On the other hand, no other structure is needed to achieve a fixed connection between the first retaining member 132k and the operating member 131, making the lock structure 130 simpler, reducing the installation difficulty of the lock structure 130, and improving the installation efficiency of the lock structure 130.

[0123] See Figures 17 to 26 In this embodiment, the second pusher 133h is fixedly connected to the operating member 131. The second retainer 133k is fixedly connected to the operating member 131. Therefore, the operating member 131, the second pusher 133h, and the second retainer 133k can move synchronously. It is understood that in other embodiments, the operating member and the second pusher can be connected via other transmission methods, and the operating member and the second retainer can also be connected via other transmission methods.

[0124] Specifically, in this embodiment, both the second push-out member 133h and the second retaining member 133k are fixedly connected to the operating member 131 via the second connecting member 134. This facilitates the design of the positions of the second push-out member 133h and the second retaining member 133k, avoiding interference with other structures in the lock structure 130. Furthermore, by reasonably setting the positions of the second push-out member 133h and the second retaining member 133k, they can be placed in suitable spaces, facilitating the reasonable setting of their size and shape.

[0125] In this embodiment, the second push-out member 133h and the operating member 131 are integrally formed. On the one hand, this improves the transmission accuracy between the operating member 131 and the second push-out member 133h. On the other hand, no other structure is needed to achieve a fixed connection between the second push-out member 133h and the operating member 131, making the lock structure 130 simpler, reducing the installation difficulty of the lock structure 130, and improving the installation efficiency of the lock structure 130.

[0126] In this embodiment, the second retainer 133k and the operating member 131 are integrally formed. On the one hand, this improves the transmission accuracy between the operating member 131 and the second retainer 133k. On the other hand, no other structure is needed to achieve a fixed connection between the second retainer 133k and the operating member 131, making the lock structure 130 simpler, reducing the installation difficulty of the lock structure 130, and improving the installation efficiency of the lock structure 130.

[0127] See Figure 13 In this embodiment, a first retainer 132k and a second retainer 133k are integrally formed, which simplifies the lock structure 130 and facilitates the miniaturization and lightweight design of the lock structure 130.

[0128] In some other embodiments, a first retainer and a second retainer are combined into one retainer, simplifying the lock structure. For ease of description, the shared retainer is referred to as the common retainer. It is understood that the common retainer is located between a first trigger and a second trigger. When the operating member moves to the first position, and continues to move in the first direction away from the third position, the common retainer abuts against the first locking member, holding the first locking member in the first non-engaged position. When the operating member moves to the second position, and continues to move in the first direction away from the third position, the common retainer abuts against the second locking member, holding the second locking member in the second non-engaged position.

[0129] See figure Figures 5 to 14 In this embodiment, the first retainer 132k has a fifth mating surface 132m, and the first locking member 132a has a sixth mating surface 132n that matches the fifth mating surface 132m. It can be understood that when the first retainer 132k and the first locking member 132a abut, the fifth mating surface 132m and the sixth mating surface 132n are in contact, thus reducing the risk of local stress concentration in the first retainer 132k and the first locking member 132a, and better maintaining the stability of the first locking member 132a.

[0130] It is understandable that both the fifth mating surface 132m and the sixth mating surface 132n are parallel to the first direction aa.

[0131] See Figures 17 to 26In this embodiment, the second retainer 133k has a seventh mating surface 133m, and the second locking member 133a has an eighth mating surface 133n that matches the seventh mating surface 133m. It is understood that when the second retainer 133k and the second locking member 133a abut, the seventh mating surface 133m and the eighth mating surface 133n are in contact, thus reducing the risk of local stress concentration in the second retainer 133k and the second locking member 133a, and better maintaining the stability of the second locking member 133a.

[0132] It is understandable that both the seventh mating surface 133m and the eighth mating surface 133n are parallel to the first direction aa.

[0133] See Figures 1 to 27 In this embodiment, there are two frame units 110, which are connected in a ring. Both sides of each frame unit 110 are locked to the corresponding side of the other frame unit 110 via a locking structure 130. It is understood that in some other embodiments, only one side of a frame unit may be locked to the corresponding side of the other frame unit via a locking structure. Correspondingly, the other side of the frame unit is fixedly connected to other structures of the air handling equipment.

[0134] In this embodiment, when both sides of the same frame unit 110 are unlocked, the operating directions of the operating members 131 of the two lock structures 130 are the same. It is understood that in other embodiments, when both sides of the same frame unit are unlocked, the operating directions of the operating members of the two lock structures may be different.

[0135] In this embodiment, the operating components 131 of the two lock structures 130 are operated independently, which makes it convenient to select the corresponding side of the corresponding frame unit 110 for unlocking as needed.

[0136] It is understood that in some other embodiments, the operating components of the two lock structures can also be linked. Specifically, when one lock structure switches from a locked state to a first open state or a second open state, it is linked with the other lock structure to switch the other lock structure from a locked state to the first open state or the second open state. For example, in some embodiments, the two lock structures can simultaneously switch from a locked state to the first open state and simultaneously switch from a locked state to the second open state. Furthermore, in some embodiments, when one of the two lock structures switches from a locked state to the first open state, the other switches from a locked state to the second open state.

[0137] In this embodiment, there are two frame units 110, which are symmetrically arranged to improve the aesthetic appearance of the filter frame 100. Of course, it is understood that in other embodiments, the central angles of the two frame units may be different along the circumference of the filter frame.

[0138] See Figure 9 , Figure 10 and Figure 16 When the first locking member 132a and the first fastener 132b are engaged, the first locking member 132a and the first fastener 132b abut against each other along the second direction bb, and the first fastener 132b and the first reset member 132d are respectively located on both sides of the first locking member 132a along the second direction bb. In other words, the first locking member 132a is held in the first engaged position under the combined action of the first fastener 132b and the first reset member 132d.

[0139] See Figure 21 , Figure 22 and Figure 27 When the second locking piece 133a and the second fastener 133b are engaged, the second locking piece 133a and the second fastener 133b abut against each other along the third direction cc, and the second fastener 133b and the second reset piece 133d are respectively located on both sides of the second locking piece 133a along the third direction cc. In other words, the second locking piece 133a is held in the second engaged position under the combined action of the second fastener 133b and the second reset piece 133d.

[0140] See Figure 16 and Figure 27 In this embodiment, both the first reset member 132d and the second reset member 133d are springs. It is understood that in other embodiments, the first reset member and the second reset member are not limited to springs, but can be any other structure that can provide a reset force.

[0141] Furthermore, in this embodiment, see Figure 12 The first locking member 132a is provided with a first limiting member 132p. A first reset member 132d is sleeved on the first limiting member 132p to prevent the first reset member 132d from slipping off. See also... Figure 24 The second locking member 133a is provided with a second limiting member 133p. The second reset member 133d is sleeved on the second limiting member 133p to prevent the second reset member 133d from slipping off.

[0142] See Figure 16 and Figure 17 A first retaining member 132a is movably mounted on the outer wall of the air duct 200 of the air handling equipment. One end of a first resetting member 132d abuts against the first retaining member 132a, and the other end abuts against the outer wall of the air duct 200.

[0143] It is understandable that the installation position of the first card is determined based on the layout of other structures in the air handling unit, and no restrictions are imposed here.

[0144] It is understood that, in some other embodiments, the first card may also be movably mounted on the first connector.

[0145] See Figure 16 and Figure 27 A second locking member 133a is movably mounted on the outer wall of the air duct 200 of the air handling equipment. One end of the second resetting member 133d abuts against the second locking member 133a, and the other end abuts against the outer wall of the air duct 200.

[0146] It is understandable that the installation position of the second card is determined based on the layout of other structures in the air handling unit, and no restrictions are imposed here.

[0147] It is understood that, in some other embodiments, the second card may also be movably mounted on the first connector.

[0148] One embodiment of this application provides an air handling device, including the filter frame provided in this application.

[0149] The aforementioned air handling unit has a locking structure with two open states: a first open state and a second open state. By controlling the different open states of the locking structure, adjacent sides of locked adjacent frame units can be unlocked separately, preventing two frame units from popping open simultaneously. Furthermore, the locking structure can control the locking and unlocking of adjacent sides of two adjacent frame units, reducing the number of locking structures, decreasing the space occupied by the locking structures, and simplifying the structure of the filter frame.

[0150] In some embodiments, the air handling equipment is an air purification equipment.

[0151] It is understood that, in other embodiments, the air handling equipment is not limited to air purification equipment, but may also be a fan, air humidifier, air dehumidifier, air heater, or other equipment with multiple air handling functions.

[0152] In this application, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the purpose of simplifying the description of this application and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. In other words, they should not be construed as limitations on this application.

[0153] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating the relative importance of the indicated features or the number of indicated technical features. Therefore, a feature specified as "first" or "second" may explicitly include at least one of those features. In this application, "multiple" means at least two, such as two, three, etc.; "several" means at least one, such as one, two, three, etc., unless otherwise explicitly specified.

[0154] In this application, unless otherwise expressly defined, the terms "installation," "connection," "linking," "fixing," "setting," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0155] In this application, unless otherwise expressly defined, the terms "above," "on top of," "over," "above," "below," "below," "below," or "below" for "first feature over second feature" can refer to the first and second features being in direct contact, or to the first and second features being in indirect contact through an intermediate medium. Furthermore, "above," "over," and "below" for "first feature over second feature" can mean the first feature is directly above or diagonally above the second feature, or simply indicates that the horizontal height of the first feature is higher than the horizontal height of the second feature. Similarly, "below," "below," and "below" for "first feature over second feature" can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0156] It should be understood that the above embodiments are exemplary and are not intended to include all possible embodiments covered by the claims. Various modifications and changes can be made to the above embodiments without departing from the scope of this disclosure. Similarly, the various technical features of the above embodiments can be arbitrarily combined to form other embodiments of this application that may not be explicitly described. Therefore, the above embodiments only illustrate several embodiments of this application and do not limit the scope of protection of this patent application.

Claims

1. A filter frame for an air handling unit; characterized in that, The filter framework includes: Multiple frame units that are sequentially adjacent; First connector; and A locking structure is provided in which at least one side of one of the frame units is locked to an adjacent frame unit via the locking structure and a first connector. The lock structure can switch between a locked state, a first open state, and a second open state. When the lock structure is in the locked state, it can lock the connection between the two corresponding frame units. The two frame units that are locked to the first connector through the lock structure, one of which is unlocked from the first connector when the lock structure is in the first open state, and the other of which is unlocked from the first connector when the lock structure is in the second open state.

2. The filter frame according to claim 1, characterized in that, The lock structure includes an operating member disposed on the first connector; the operating member is movable to switch the lock structure between a locked state, a first open state, and a second open state.

3. The filter frame according to claim 2, characterized in that, Two frame units are configured to be locked and connected to the first connector via the locking structure, namely a first frame unit and a second frame unit; the first frame unit has a first side that is locked and connected to the first connector; the second frame unit has a second side that is locked and connected to the first connector; the locking structure further includes a first latching unit and a second latching unit; The first latching unit includes: The first card is movable relative to the first connector to switch between a first engaged position and a first disengaged position; The first fastener is fixedly disposed on the first side of the first frame unit and matches the first locking component; and The first trigger is connected to the operating member; the operating member moves to drive the first locking member from the first engaging position to the first disengaged position through the first trigger, thereby unlocking the first fastener from the first locking member and switching the lock structure from the locked state to the first open state. The second snap-fit ​​unit includes: The second locking component is movable relative to the first connecting component to switch between a second engaged position and a second disengaged position; The second fastener is fixedly disposed on the second side of the second frame unit and matches the second locking member; and The second trigger is connected to the operating member in a transmission manner; the operating member moves to drive the second locking member from the second engaged position to the second disengaged position through the second trigger, thereby unlocking the second fastener from the second locking member and switching the lock structure from the locked state to the second open state.

4. The filter frame according to claim 3, characterized in that, The first trigger is fixedly connected to the operating element; the second trigger is fixedly connected to the operating element.

5. The filter frame according to claim 3, characterized in that, The first latching unit further includes a first reset member; the first reset member is used to provide a reset force for the first latching member to move to the first engaging position; And / or, the second latching unit further includes a second reset member; the second reset member is used to provide a reset force for the second latching member to move to the second engaging position.

6. The filter frame according to claim 5, characterized in that, The operating element is movable to switch between a first position, a second position, and a third position; the third position is located between the first position and the second position; when the operating element is in the first position, the lock structure is in a first open state; when the operating element is in the second position, the lock structure is in a second open state. When the operating element is in the third position, the lock structure is in a locked state.

7. The filter frame according to claim 6, characterized in that, In at least one of the lock structures, the number of the first latching units is at least two, and the at least two first latching units are arranged along the direction of the first side of the first frame unit; In at least one of the lock structures, the number of the second latching units is at least two, and the at least two second latching units are arranged along the direction of the second side of the second frame unit.

8. The filter frame according to claim 6, characterized in that, When the operating component switches between the first position, the second position, and the third position, the direction of movement is the first direction. The first card can move along the second direction to switch between a first engaged position and a first disengaged position; the first card has a first contact surface, and the first trigger has a second contact surface; when the operating member moves from the third position to the first position, the first contact surface and the second contact surface are engaged. The angle between the first bonding surface and the first direction is greater than zero; The angle between the first bonding surface and the second direction is greater than zero; The second card can move along a third direction to switch between a second engaged position and a second disengaged position; the second card has a third contact surface, and the second trigger has a fourth contact surface; when the operating member moves from the third position to the second position, the third contact surface and the fourth contact surface are engaged; the angle between the third contact surface and the first direction is greater than zero; the angle between the third contact surface and the third direction is greater than zero.

9. The filter frame according to claim 8, characterized in that, When the first latching unit includes the first reset member and the second latching unit includes the second reset member, the first trigger member is further provided with a first clearance groove; the first clearance groove is located on one side of the second contact surface; during the process of the second latching member moving from the second engaging position to the second non-engaging position, the first engaging surface of the first latching member can be partially inserted into the first clearance groove under the action of the first reset member; The second trigger is also provided with a second clearance groove; the second clearance groove is located on one side of the fourth contact surface; during the process of the first card moving from the first engaging position to the first non-engaging position, the third engaging surface of the second card can be partially inserted into the second clearance groove under the action of the second reset member.

10. The filter frame according to any one of claims 3 to 5, characterized in that, The height direction of the frame unit is set as the fourth direction; the number of the first fastener is at least one, and the number of the second fastener is at least one; the number of the first fastener and the number of the second fastener are the same and correspond one-to-one; along the fourth direction, the height of the first fastener and the corresponding second fastener are the same.

11. The filter frame according to any one of claims 3 to 5, characterized in that, The first latching unit further includes a first push-out member and a first retaining member; the first push-out member is convexly connected to the operating member; after the first latching member moves to the first non-engaged position, the operating member can continue to move to push the first fastener away from the latching position through the first push-out member, and the first retaining member abuts against the first latching member so that the first latching member is held in the first non-engaged position; The second latching unit further includes a second push-out member and a second retaining member; the second push-out member is convexly connected to the operating member; after the second latching member moves to the second non-engaged position, the operating member can continue to move to push the second fastener out of the engaged position through the second push-out member, and the second retaining member abuts against the second latching member so that the second latching member is held in the second non-engaged position.

12. The filter frame according to any one of claims 1 to 5, characterized in that, The frame unit consists of two units connected in a ring; each frame unit is locked to the corresponding side of the other frame unit via a locking structure on both sides.

13. The filter frame according to claim 12, characterized in that, When both sides of the same frame unit are unlocked, the operating directions of the two lock structures are the same or different.

14. The filter frame according to claim 12, characterized in that, The operating components of the two lock structures operate independently; Alternatively, when one of the lock structures switches from a locked state to a first open state or a second open state, it may be linked with another lock structure to switch the other lock structure from the locked state to the first open state or the second open state.

15. The filter frame according to claim 1, characterized in that, The frame unit consists of two units, which are arranged symmetrically.

16. The filter frame according to claim 1, characterized in that, The number of frame units is two; the central angles of the two frame units are different along the circumference of the filter frame.

17. An air handling device, characterized in that, Includes the filter frame as described in any one of claims 1 to 16.

18. The air handling apparatus according to claim 17, characterized in that, The air handling equipment is an air purification device.

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