CN215929762U - Frame assembly and air return fan set - Google Patents

Abstract

The application discloses frame subassembly and return fan group. The frame assembly is used for installing the filter and comprises a frame, a locking assembly, a first clamping assembly and a second clamping assembly. The first clamping assembly is mounted to a side portion of the frame. The second clamping assembly is arranged in the middle of the frame and is matched with the first clamping assembly to limit the filter in the direction perpendicular to the frame. The locking assembly is mounted to the frame and is switchable between a locked state and an unlocked state. The locking assembly locks the filter to the frame in a locked state and in an unlocked state the filter is movable between the first and second clamp assemblies laterally away from the frame. So set up, only need operate locking Assembly makes it switch between unblock state and locking state, realizes the dismouting of filter, easy dismounting, moreover locking Assembly installs on the frame, the condition that the widget (such as screw and checkpost) lost can not appear.

Description

Frame assembly and air return fan set

Technical Field

The application relates to the technical field of air conditioners, in particular to a filter frame assembly and a return fan set.

Background

The air return set comprises an air return box, a filter and a frame assembly. The frame assembly includes a frame and a mount. The frame is assembled on the air return box. The mount mounts the filter to the frame.

The technical personnel find that the existing air return unit still has a space for improvement, for example, a filter is a part which needs to be maintained and replaced frequently, and the convenience for disassembly and assembly is very critical.

SUMMERY OF THE UTILITY MODEL

The application aims to provide a frame component and a return fan set. The frame assembly enables the filter to be conveniently disassembled and assembled.

The present application provides a frame assembly for mounting a filter. The frame subassembly includes frame, locking Assembly, first centre gripping subassembly and second centre gripping subassembly, wherein: the first clamping component is arranged on the side part of the frame; the second clamping assembly is arranged in the middle of the frame and limits the filter in a direction perpendicular to the frame together with the first clamping assembly; the locking assembly is mounted on the frame and can be switched between a locking state and an unlocking state, the locking assembly is in the locking state and can lock the filter to the frame together with the first clamping assembly and the second clamping assembly, and in the unlocking state, the filter can move relative to the first clamping assembly and the second clamping assembly so as to be separated from the frame from the lateral direction of the frame, or the frame assembly comprises a frame, a locking assembly and a first clamping assembly, the first clamping assembly is mounted on two side parts of the frame, and the filter is limited in the direction perpendicular to the frame; the locking assembly is mounted on the frame and can be switched between a locking state and an unlocking state, the locking assembly and the first clamping assembly jointly lock the filter to the frame in the locking state, and the filter can move between the first clamping assembly and the unlocking state to be separated from the frame from the lateral direction of the frame. Due to the arrangement, the filter can be disassembled and assembled only by operating the locking assembly to switch between the unlocking state and the locking state, so that the filter is convenient to disassemble and assemble, for example, the disassembly and the assembly can be realized without screwing screws and the clips; and the locking assembly is mounted on the frame, so that the situation that small parts (screws and clips) are lost is avoided.

Optionally, the frame includes an opening, and the locking assembly includes a shutter that blocks the opening in the locked state and opens the opening in the unlocked state. So set up, shelter from through the baffle the opening or open the open-ended mode is realized locking Assembly switches between locking state and unblock state, locking Assembly's simple structure, dismouting filter is also convenient.

Optionally, the locking assembly comprises a hinge and a fixing member, the baffle plate is connected to the frame through the hinge and rotates around the frame in different directions through the hinge to shield or shield the opening, and the fixing member can prevent the baffle plate from rotating under the condition that the baffle plate shields the opening; or the baffle can be assembled on the frame in a sliding mode, and the baffle slides along the frame in different directions to shield the opening or open the opening. With the arrangement, the filter can be disassembled or assembled by rotating the baffle or sliding the baffle to enable the baffle to cover or uncover the opening, the filter is convenient to disassemble and assemble,

optionally, the fixing member is rotatably connected to the frame, and the fixing member rotates in different directions to lock the barrier so that the barrier covers the opening, or the barrier is in a free state, and in the free state, the barrier can rotate around the frame to open the opening. So set up, adopt aforementioned structure to realize baffle locking or unblock, and then, make dismantlement and installation the filter is convenient, moreover, the rotatable connection of mounting in the frame can not lose yet.

Optionally, the fixing piece comprises a rotating portion, a connecting portion and a supporting portion, the rotating portion is rotatably connected with the frame, the supporting portion and the rotating portion are located at two ends of the connecting portion and back to back, the supporting portion supports and presses the baffle to achieve locking of the fixing piece on the baffle, and the supporting portion avoids the baffle to achieve that the baffle can rotate around the frame. So set up, because the mounting includes rotation portion, connecting portion and support portion and rotation portion and support portion back of the body mutually, realize stopping with simple structure the baffle for the frame rotates.

Optionally, the first clamp assembly comprises first clamps, each first clamp being equidistant from the frame by a thickness of the filter; a first position adjusting structure is arranged between the first clamping piece and the frame, and the distance between the first clamping piece and the frame along the direction perpendicular to the frame is correspondingly adjusted by adjusting the first position adjusting structure. So set up, through the adjustment first position adjustment structure can be so that first centre gripping subassembly with the distance between the frame is different, and then, the frame subassembly can be applicable to the filter of different thickness.

Optionally, the first clamp assembly comprises first clamps, each first clamp being spaced from the frame by a distance equal to the thickness of the filter; at least one of the two first clamping pieces can move along the frame to reduce the distance between the two first clamping pieces, so that the first clamping pieces can limit the filter in the direction perpendicular to the frame; at least one of the two first clamping pieces can move along the frame to increase the distance between the two first clamping pieces so as to release the limit of the filter, and the filter can be taken out from the front face of the frame. So set up, the dismouting the filter is convenient, especially in returning fan group down, and the dismouting filter is more convenient.

Optionally, the first clamping assembly comprises a first clamping member and the second clamping assembly comprises a second clamping member, the distance between the first clamping member and the frame and the distance between the second clamping member and the frame are equal to the thickness of the filter; at least one of the first clamping piece and the second clamping piece can move along the frame to reduce the distance between the first clamping piece and the second clamping piece, so that the filter is limited in the direction perpendicular to the frame; at least one of the first clamping piece and the second clamping piece can move along the frame to increase the distance between the first clamping piece and the second clamping piece so as to release the limit of the filter, and the filter can be taken out from the front face of the frame. So set up, the frame subassembly can realize that the filter is in the positive dismouting of frame (i.e. under the condition facing the frame, the dismouting the filter), easy dismounting, this kind of mode combines together with aforementioned filter from side direction and frame separation, can realize that same set of frame subassembly has solved the problem that filter was dismantled and was installed in time fan unit and the back fan unit of returning, moreover, the replacement that two kinds of modes can be nimble for the design is unified, and the production of being convenient for reduces the material, the cost is reduced. This arrangement, in combination with the first position adjustment feature provided by the frame assembly, also accommodates filters of different thicknesses.

Optionally, the first clamping assembly comprises a first clamping member, the second clamping assembly comprises a second clamping member, a first position adjusting structure is arranged between the first clamping member and the frame, a second position adjusting structure is arranged between the second clamping member and the frame, and the distance between the first clamping member and the frame in the direction perpendicular to the frame is adjusted by adjusting the first position adjusting structure and the second position adjusting structure. According to the arrangement, the distance between each of the first clamping piece and the second clamping piece and the frame along the direction perpendicular to the frame is adjusted through the first position adjusting structure and the second position adjusting structure, so that the filter with different thicknesses is adapted.

Optionally, the first position adjusting structure comprises a first adjusting piece and first adjusting holes arranged at intervals in a direction perpendicular to the frame, the first adjusting holes are arranged in one of the frame and the first clamping piece, and the first adjusting piece is arranged in the other of the frame and the first clamping piece; the first adjusting pieces are positioned in different first adjusting holes and are locked to realize adjustment of the distance between the first clamping piece and the frame along the direction vertical to the frame; or, the first position adjusting structure comprises a first adjusting piece and a first sliding mechanism arranged between the first clamping piece and the frame, and the first clamping piece slides along the first sliding mechanism to adjust the distance between the first clamping piece and the frame along the direction perpendicular to the frame and is fixed by the first adjusting piece. As set forth above, the first position adjustment structure is simple in structure, and the adjustment of the distance between the first clamping member and the frame in the direction perpendicular to the frame can be more easily achieved.

Optionally, the second position adjusting structure comprises a second adjusting piece and second adjusting holes arranged at intervals in a direction perpendicular to the frame, the second adjusting holes are arranged in one of the frame and the second clamping piece, and the second adjusting piece is arranged in the other of the frame and the second clamping piece; the second adjusting piece is positioned in different second adjusting holes and is locked to adjust the distance between the second clamping piece and the frame along the direction vertical to the frame; or the second position adjusting structure comprises a second adjusting piece and a second sliding mechanism arranged between the second clamping piece and the frame, and the second clamping piece slides along the second sliding mechanism to adjust the distance between the second clamping piece and the frame along the direction perpendicular to the frame and is fixed by the second adjusting piece. As set forth above, the second position adjustment structure is simple in structure, and the distance adjustment between the second clamping member and the frame can be realized more easily.

Optionally, the second adjusting hole is a long hole extending in the transverse direction of the frame, and the second adjusting piece is located at a different position in the second adjusting hole to adjust the distance between the first clamping piece and the second clamping piece; the second adjusting piece is a screw and a nut, and the second clamping piece can slide relative to the nut under the damping condition and is fixed at the position after sliding. So set up, can just can adjust with the help of the instrument between first holder and the second holder along the horizontal distance of frame to simple realization the dismouting of filter, moreover, because can fix the position after the slip, like this, the second holder can comparatively firm install in the frame.

Optionally, the second adjusting holes arranged at intervals are communicated through second communication holes, and/or parts of the first clamping assembly and parts of the second clamping assembly are the same, the first clamping piece is vertically arranged on the side portion of the frame, and the second clamping piece is transversely arranged on the frame. So set up, under the condition that does not use the instrument, first adjusting part can pass through in first intercommunicating pore switches to different first adjustment, the second adjusting part can pass through in the second intercommunicating pore switches to different second adjustment, first holder with the second holder respectively with the distance adjustment along the direction of perpendicular to frame is convenient between the frame, and then, the filter of the different thickness of adaptation that can be convenient, reunion the second adjustment hole is the slot hole, and a part can adapt to the filter of different thickness, can realize the dismouting of filter again.

On the other hand, the embodiment of the application discloses a return air fan group. The return air fan unit comprises any one of the frame assemblies, the filter and the return air box, and the frame is assembled on the return air box. So set up, return fan group has at least the beneficial effect of frame subassembly, no longer redundantly.

Drawings

FIG. 1 is a schematic view of an air return train;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a schematic view of an assembly of a frame assembly and a filter according to an embodiment of the present application;

fig. 4 is a partially enlarged view of a portion B of fig. 3;

fig. 5 is a partially enlarged view of a portion C in fig. 3;

FIG. 6 is an exploded view of the assembly shown in FIG. 3;

fig. 7 is a partial enlarged view of a portion D in fig. 6;

FIG. 8 is a schematic view of a locking assembly of a frame assembly shown assembled to the bottom of a frame according to an embodiment of the present application;

fig. 9 is a partial enlarged view of portion E of fig. 8;

FIG. 10 is a schematic view of a fastener shown according to an embodiment of the present application;

FIG. 11 is a schematic view of a frame assembly shown in accordance with an embodiment of the present application applied to a post return air condition with a filter removed;

FIG. 12 is a schematic view of a rear return fan set according to embodiments of the present application;

fig. 13 is a schematic diagram of a bottom return fan set according to an embodiment of the present application.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, in some embodiments, a frame assembly 10 includes a frame 1 and an L-shaped clip 5. The filter 20 is fixed to the return air case 30 by a screw and the clip 5. There are the following problems:

1) when the filter is disassembled and assembled, the screws need to be screwed, then the clips 5 are disassembled, and then the filter 20 is disassembled, so that the disassembly and the assembly are troublesome;

2) small parts such as screws and clips 5 are easy to lose after being disassembled;

3) the filter 20 can only be removed from the front of the frame 1 as shown in the figures, which makes it inconvenient to replace the filter 20, especially in the back return fan set, since the access opening is small, which makes it inconvenient to take out the filter from the front as shown in the figures;

4) because the L-shaped clips 5 are different in length in the transverse direction and the vertical direction, the L-shaped clips can be applied to filters with two thicknesses, and the application range is limited.

In order to solve at least one of the above problems, embodiments of the present application disclose a frame assembly and a return fan unit. The corresponding structure of the frame assembly is described in detail below.

Referring to fig. 3 and 6 in conjunction with fig. 11, 12 and 13, a frame assembly 10 is provided for mounting a filter 20. Two filters 20 are illustrated in fig. 3, 6 and 11. The number of the filters 20 is not limited, and for example, the concept of the present application can also be applied to a case where the filter 20 is one, as described later. In the case where the filter 20 has two, an embodiment of the frame assembly 10 is described, and the frame assembly 10 includes a frame 1, a locking assembly 2, a first clamping assembly 3, and a second clamping assembly 4. The first clamping assembly 3 is mounted to a side portion 12 of the frame 1. The mounting of the second clamping assembly 4 in the middle of the frame 1 may be in the middle of the top and the middle of the bottom 11 of the frame 1 as shown in fig. 3, 6 and 11, or in any case, the middle is determined by the length of the filter 20, so that the cooperation of the second clamping assembly 4 with the first clamping assembly 3 also limits the filter 20 in the direction perpendicular to the frame 1 (Z direction), so that the filter 20 is mounted in the frame 1 without tilting, e.g. ensuring that it stands upright in the frame 1 as shown in fig. 3, 11, 12 and 13. The first and second clamp assemblies 3, 4 also enable the filter 20 to move in a lateral direction of the frame 1 (in the embodiment shown in the figures, the lateral direction is downward). The skilled person will appreciate that the limitation and movement of the filter 20 includes two cases: 1) is limited in the direction perpendicular to the frame, and as will be described later, the filter 20 is drawn out downward, but of course, the filter 20 may also be drawn out upward; 2) is restrained in a direction perpendicular to the frame and draws the filter 20 either to the left or to the right. Of course, in both cases, the filter 20 can be removed in the Z-direction based on the configuration of the first clamp assembly 3 or the respective first and second clamp assemblies 3 and 4. The manner of extraction downwards, and/or from a direction perpendicular to the frame 1 (Z direction), and so on, is described in detail below in connection with the drawings.

In the embodiment of the present application, the first clamping assembly 3 and the second clamping assembly 4 include the same components, and the skilled person will understand that the components included in the two assemblies may be different. The locking assembly 2 is mounted to the frame 1, fig. 3 and 11 illustrate the locking assembly 2 mounted to the bottom 11 of the frame 1, and fig. 11 illustrates the filter 20 removed from the bottom 11 of the frame 1, so that the mounting position of the locking assembly 2 depends on the direction of removal of the filter. The locking assembly 2 can be switched between a locked state and an unlocked state. How the locking assembly 2 is mounted at the bottom or the top of the frame 1 has various structures, which are not described in detail. The locking assembly 2, together with the first clamping assembly 3 and the second clamping assembly 4, locks the filter 20 to the frame 1 in the locked state, and in the unlocked state, the filter 20 can be separated from the frame 1 between the first clamping assembly 3 and the second clamping assembly 4 from a lateral direction (in the illustrated embodiment, the lateral direction is a downward direction) of the frame 1, as described below with reference to the drawings, and the frame assembly 10 is applied to a rear fan set.

Fig. 12 illustrates a structure of a rear return fan unit. As shown in fig. 11 and 12, in the state where the locking assembly 2 is mounted to the bottom of the frame 1 and in the unlocked state, the filter 20 can be moved in a vertically downward direction as shown by an arrow a1 and then withdrawn from the frame 1 to be separated from the frame 1; the skilled person will appreciate that with the locking assembly 2 mounted on top of the frame 1 and in the unlocked condition, the filter 20 can be moved in a vertically upward direction and then withdrawn from the top of the frame 1 to effect separation. In the case of a filter which needs to be installed after being cleaned, the locking assembly 2 is in the unlocked state, and the locking assembly 2 is switched to the locked state after the filter 20 is moved to the proper position in the direction of arrow a 2. Due to the arrangement, the filter 20 can be disassembled and assembled only by operating the locking assembly 2 to switch between the unlocking state and the locking state, and the disassembly and the assembly are convenient, for example, the disassembly and the assembly are realized without screwing screws and the clips 5; and the locking assembly 2 is mounted on the frame 1, so that small parts (screws and clips 5) cannot be lost. In the embodiment of the present application, two filters 20 are installed on the frame 1, if it is necessary to detach the filter 20 on the right side of the frame 1, the filter 20 on the left side is detached first in the direction of the arrow a1, the filter 20 on the right side is slid to the position of the filter 20 on the left side in the direction of the arrow A3, and then the filter 20 is detached in the direction of the arrow a 1. Of course, the locking assembly 2 can also be arranged below the right-hand filter 20, so that it can be removed just as the left-hand filter 20. Further, after the right filter 20 is cleaned, the filter 20 is inserted in the direction of the arrow a2 with the latch assembly 2 in the unlocked state, and then the right filter 20 is moved into position in the direction of the arrow a4 to assemble the right filter 20.

Based on the above-described function of the locking assembly 2, the structure of the locking assembly 2 is not limited. The components that comprise one locking assembly 2 and their corresponding structure are described below.

Referring to fig. 6, 8 and 9 in combination with fig. 11, the bottom 11 of the frame 1 includes an opening 111. The opening 111 is used to draw out the filter 20, and thus, although the opening 111 is illustrated as being provided in the bottom 11, it will be understood by those skilled in the art that the position of the opening 111 depends on the direction in which the filter 20 is drawn out. The locking assembly 2 comprises a shutter 21. The shutter 21 blocks the opening 111 in the locked state, as shown in fig. 3 and 8, in which case the filter 20 cannot be removed from the longitudinal direction of the frame 1, and the shutter 21 opens the opening 111 in the unlocked state, in which case the filter 20 can be removed from the lateral direction (i.e., downward) of the frame 1, as shown in fig. 11 by removing the filter 20 in the direction of the arrow a 1. Of course, in the case where it is desired to remove the filter 20 from the top of the frame 1 (i.e., upwardly), the opening 111 is provided at the top of the frame 1. With such an arrangement, the locking assembly 2 is switched between the locking state and the unlocking state by blocking the opening 111 or opening the opening 111 with the baffle 21, and further, when the locking assembly 2 is in the unlocking state, the filter 20 is drawn out from the opening 111, the locking assembly 2 has a simple structure, and the filter 20 is also convenient to mount and dismount, for example, in the back air return unit shown in fig. 12, the back air return unit is connected with a relevant pipeline at the back as shown in the figure, so that the maintenance space is small, and it is inconvenient to take out or mount the filter 20 from the direction facing the frame 1, and the filter assembly 10 is arranged as shown in fig. 11, so that the filter 20 can be conveniently taken out or mounted.

The skilled person will understand that there are many structures for covering the opening 111 or opening the opening 111 by the baffle 21, for example, the locking assembly 2 comprises a hinge 22 and a fixing member 23. The flap 21 is connected to the frame 1 by hinges 22. In fig. 3, 6 and 11, said baffle 21 is attached to the bottom 11 of the frame 1. The shutter 21 rotates around the frame via the hinge 22 in different directions to block or block the opening 111, for example, in fig. 3, the opening 111 may be blocked by rotating around the direction R1, and the opening 111 may be blocked by rotating around the direction R2. The fixing member 23 can prevent the flap 21 from rotating around the hinge 22 when the flap 21 blocks the opening 111. With such an arrangement, it is convenient to detach and mount the filter 20, and more specifically, after the fixing of the fixing piece 23 to the baffle 21 is released, the baffle 21 rotates around the hinge 22, and the filter 20 can be detached in the direction a1 shown in fig. 11; the filter 20 is installed in the direction of a2 shown in fig. 11 with the opening 111 open, and after the installation is completed, the blocking plate 21 is rotated in the direction of R2 to block the opening 111, and then the fixing member 23 prevents the blocking plate 21 from rotating, whereby the locking assembly 2, together with the first clamping assembly 3 and the second clamping assembly 4, locks the filter 20 to the frame 1.

As an alternative to the above-mentioned locking assembly 2, the blocking plate 21 blocks or opens the opening 111 through the hinge 22 and the fixing member 23, the blocking plate 21 may be slidably assembled to the frame 1, for example, the bottom 11 of the frame 1 may slide along the frame 1 in different directions to block the opening 111, or the opening 111 may be opened, for example, as shown in fig. 3, the blocking plate may slide along the bottom 11 of the frame 1 in the left direction to block the opening 111, and the blocking plate may slide along the bottom 11 of the frame 1 in the right direction to open the opening 111.

There are various ways how the fixing member 23 can prevent the shutter 21 from rotating, for example, in the case that the shutter 21 blocks the opening 111, the fixing member 23 slides relative to the frame 1 to press the shutter 21 against the frame 1 to prevent the shutter from rotating, which is similar to the principle that the structure of a door latch prevents the door from rotating. Another way of preventing the flap 21 from rotating by the fixing member 23 is described as follows:

referring to fig. 8 and 9 in combination with fig. 6 and 11, the fixing member 23 is rotatably connected to the frame 1. The fixing member 23 rotates in different directions to lock the blocking plate 21, so that the blocking plate 21 blocks the opening 111, or the blocking plate 21 is in a free state, in which the blocking plate 21 can rotate around the frame 1 to open the opening 111, for example, in fig. 9, the fixing member 23 rotates counterclockwise to lock the blocking plate 21, and rotates clockwise to enable the blocking plate 21 to be in a free state. So set up, adopt aforementioned structure to realize baffle 21 locks or unblock, and then, make dismantlement and installation filter 20 is convenient, moreover, the rotatable connection of mounting 23 in frame 1 also can not lose.

The fixing member 23 has various structures, referring to fig. 10 in combination with fig. 6, 8, 9 and 11, in one embodiment, the fixing member 23 includes a rotating portion 231, a connecting portion 232 and an abutting portion 233. The rotating part 231 is rotatably connected to the frame 1, for example, the rotating part 231 is provided with a through hole 2311, and the rotating part is rotatably connected to the through hole 2311 through a pivot or a screw. The abutting portion 233 and the rotating portion 231 are located at two ends of the connecting portion 232 and are opposite to each other, for example, the abutting portion 233, the connecting portion 232 and the rotating portion 231 form a zigzag shape or a step shape. The distance between the abutting portion 233 and the rotating portion 231 may be considered as the thickness of the shutter 21. The fixing member 23 is rotated counterclockwise so that the abutting portion 233 abuts against the shutter 21, as shown in fig. 8 and 9, in which case the shutter 21 cannot rotate about the hinge 22 and, therefore, the opening 111 cannot be opened. The fixing member 23 rotates clockwise to make the abutting portion 233 avoid the flap 21, and in this case, the flap 21 is in a free state and can rotate relative to the frame 1 around the hinge 22 to open the opening 111. With this arrangement, since the fixing member 23 includes the rotating portion 231, the connecting portion 232 and the abutting portion 233, and the rotating portion 231 and the abutting portion 233 are opposite to each other, the rotation of the baffle 21 with respect to the frame 1 is blocked by a simple structure, and finally the opening 111 is blocked or opened.

As described above in relation to the structure for detaching or mounting the filter 20 and its locking assembly 2 in the longitudinal direction of the frame 1, it is desirable to realize various attaching and detaching modes of the filter 20 in practical products, for example, attaching and detaching the filter 20 not only in the lateral direction of the frame 1 to be applied to a rear return fan unit. A rear return air fan assembly is shown in figure 12. It is also desirable that a set of frame assemblies be adaptable not only to a rear return fan assembly (such as the rear return fan assembly shown in fig. 12) but also to a lower return fan assembly (such as the lower return fan assembly shown in fig. 13). The construction of such a frame assembly is described in detail below.

With continued reference to fig. 4, 5, and 7 in conjunction with fig. 3 and 6, in one embodiment, the first clamping assembly 3 includes a first clamping member 31. The second clamping assembly 4 comprises a second clamping member 41. The distance between the first and second clamps 31 and 41 and the frame 1 in a direction perpendicular to the frame 1 is equal to the thickness of the filter 20. At least one of the first and second clamps 31 and 41 is movable along the frame 1 to reduce the distance therebetween, and in fig. 6 and 11 in the direction of arrow a3, to restrain the filter 20 in a direction perpendicular to the frame 1. At least one of the first and second clamps 31 and 41 is movable along the frame 1 to increase the distance therebetween along the frame 1 to release the filter 20 so that the filter 20 can be removed in a direction facing the frame (as shown in the front of the frame 1), and the removed state can be as shown in fig. 6. The skilled person will understand that of course it is possible that both the first 31 and second 41 clamping members move relatively along the frame 1 to achieve said distance reduction; it is also possible that one is stationary and the other is moving relative to one to achieve a reduction in the distance between the two. The process of how to increase or decrease the distance is explained in connection with fig. 5 to 7 as follows:

this way of removing the filter 20 from the front face of the frame 1 is more suitable for a lower return air fan unit as shown in fig. 13, for example, in fig. 5, 6, 7 and 13, the first clamping member 31 is stationary with respect to the frame 1 in the operation of clamping the filter 20 or removing the filter 20; the second clamping assembly 4 comprises a second adjusting member 42 mounted on the frame, the second clamping member 41 comprises a second adjusting hole 411, the second adjusting member 42 is located in the second adjusting hole 411, so that the second clamping member 41 can slide towards different directions, more specifically, the second clamping member 41 can slide towards the right in the direction of an arrow A4 shown in figures 5, 6, 7 and 11 to the state shown in figure 7, the limit of the filter 20 can be released, and the filter 20 can be taken out in the direction of a V1 shown in figures 6 and 13 (taken out from the front of the frame 1). The filter 20 is mounted in the direction of the arrow V2 shown in fig. 6 and 13, and then the second clamping member 41 is slid leftward in the direction of the arrow A3 to the state shown in fig. 5, thereby restraining the filter 20 in the direction perpendicular to the frame 1. With this arrangement, the frame assembly 10 can achieve both the front removal of the filter 20 from the frame 1 (i.e., the removal and installation of the filter facing the frame), and the lateral removal of the filter 20 from the frame 1 (from the bottom 11 in the embodiment of the present application) as described above, and in some cases, the removal of the filter 20 from the front and the removal of the filter 20 from the left or right side can be achieved, as described above, the same set of frame assembly 10 solves the problems of the removal and installation of the filter 20 in the lower and rear return air fan sets, and the two types can be flexibly replaced, so that the design is uniform, the production is facilitated, the material is reduced, and the cost is reduced.

In some embodiments, a first position adjusting structure is disposed between the first clamping member 31 and the frame 1, a second position adjusting structure is disposed between the second clamping member 41 and the frame 1, and the first position adjusting structure and the second position adjusting structure are adjusted to adjust the distance between the first clamping member 31 and the second clamping member 41 and the frame 1 in the direction perpendicular to the frame 1, respectively. With this arrangement, the distance between each of the first and second clamping members 31 and 41 and the frame 1 in the direction perpendicular to the frame 1 is adjusted by the first and second position adjustment structures, thereby accommodating filters 20 of different thicknesses. The skilled person will appreciate that accommodating filters of different thicknesses includes the following: 1) in the case of the frame assembly 10 being adapted for use in a rear return air fan unit, the first and second clamping assemblies 3, 4 cooperate to accommodate filters 20 of different thicknesses; 2) as shown in fig. 3, 6, 11, 12 and 13, when the frame assembly 10 is applied not only to the attachment and detachment of the filter 20 of the rear return fan unit but also to the attachment and detachment of the filter 20 of the lower return fan unit, the engagement between the first clamp assembly 3 and the second clamp assembly 4 is adapted to the filters 20 having different thicknesses; 3) the frame assembly 10 is adapted to accommodate filters 20 of different thicknesses in the case of a lower return stack.

The specific structure of the first position adjusting structure is various, please refer to fig. 4, the first position adjusting structure includes first adjusting parts 32 and first adjusting holes 311 arranged at intervals along a direction perpendicular to the frame 1, the first adjusting holes 311 are disposed in one of the frame 1 and the first clamping part 31, the first adjusting parts 32 are disposed in the other of the frame 1 and the first clamping part 31; the first adjusting members 32 are located in different first adjusting holes 311 and locked to adjust the distance between the first clamping member 31 and the frame 1. In the embodiment of the present application, the structure of the first clamping member 31 and the structure of the second clamping member 41 are the same, as shown in fig. 4, 5 and 7 and fig. 3, 6, 11, 12 and 13, and the difference between the two is that the first clamping member 31 is vertically disposed on the side portion 12 of the frame 1, and the second clamping member 41 is transversely disposed on the frame 1 (in the present embodiment, on the bottom portion 11 and the top portion), so the first adjustment hole 311 is a long hole, and the skilled person can understand that in other embodiments, the first adjustment hole 311 may not be a long hole, for example, a round hole. The first adjustment holes 311 are arranged in a straight line. As an alternative to the above-described embodiment, the first position adjustment structure includes a first adjustment member 32 and a first sliding mechanism provided between the first clamping member 31 and the frame 1, and the first sliding mechanism may be a slide rail or a slide groove or the like. The first clamping member 31 slides along the first sliding mechanism to adjust the distance between the first clamping member and the frame 1 in the direction perpendicular to the frame 1 and is fixed by the first adjusting member 32 at the adjusted distance.

Similar to the first position adjustment structure, the second position adjustment structure includes a second adjustment member 42 and second adjustment holes 411 arranged at intervals in a direction perpendicular to the frame 1, the second adjustment holes 411 are disposed in one of the frame 1 and the second clamping member 41, and the second adjustment member 42 is disposed in the other of the frame 1 and the second clamping member 41; the second adjusting members 42 are located in different second adjusting holes 411 and locked to adjust the distance between the second clamping member 41 and the frame 1 in the direction perpendicular to the frame. Alternatively, the second position adjustment structure includes a second adjustment member 42 and a second sliding mechanism disposed between the second clamping member 41 and the frame 1, and the second sliding mechanism may be a sliding rail or a sliding chute. The second clamping member 41 slides along the second sliding mechanism to adjust the distance from the frame 1 in the direction perpendicular to the frame and is fixed by the second adjusting member 42 at the adjusted distance.

As described above, the first position adjustment structure and the second position adjustment structure are simple in structure, and the distance between the first clamping member 31 and the second clamping member 41 and the frame 1 can be adjusted more easily.

With continued reference to fig. 5 and 7, the second adjusting hole 411 is a long hole, the length direction of the second adjusting hole 411 depends on the direction of taking out the filter 20, for example, a long hole extending along the transverse direction of the frame 1, the second adjusting member 42 is located at different positions in the second adjusting hole 411 so as to adjust the distance between the first clamping member 31 and the second clamping member 41, and thus, the second clamping member 41 can realize two functions by matching the second adjusting hole 411 with the second adjusting member 42: 1) the second adjusting member 42 is located at a different position in the same second adjusting hole 411, so that the distance between the first clamping member 31 and the second clamping member 41 along the frame 1 (e.g., in the transverse direction of the figure) can be increased or decreased, and the filter 20 can be detached or assembled from the front side of the frame 1; 2) the second adjusting member 42 is located in a different second adjusting hole 411, so that the distance between the second clamping member 41 and the frame 1 can be adjusted, and further, the second adjusting member can be matched with the first clamping assembly 3 to adapt to filters 20 with different thicknesses, so that the filters 20 are convenient to assemble and disassemble; for example, in FIGS. 5 and 7, the second adjustment member 42 is positioned within the first and second adjustment holes 411 to receive a filter 20 of a first thickness; the second adjusting member 42 is positioned in the second adjusting hole 411 to mount the filter 20 with a second thickness; the second adjusting member 42 is positioned in the third second adjusting hole 411 to install the filter 20 having a third thickness.

In the above embodiments, the first adjusting member 32 and the second adjusting member 42 are both a screw and a nut, and the first clamping member 31 and the second clamping member 41 can slide and be fixed in a position after sliding relative to the nut under a resistance force (the damping amount is selected according to actual requirements, and the first clamping member 31 or the second clamping member 41 can slide and be fixed), for example, a locking force of the first adjusting member 32 to the first clamping member 31 and a locking force of the second adjusting member 42 to the second clamping member 41 are adjusted in advance, and the two clamping members can be locked and can slide under an external force, so that a distance between the first clamping member 31 and the second clamping member 41 along the frame 1 (for example, a transverse direction shown in the figure) can be adjusted without using tools, and the filter 20 can be easily disassembled and assembled. And can be fixed at the position after sliding, and the first clamping piece 31 and the second clamping piece 41 are fixed relatively firmly.

Referring to fig. 5 and 7 in conjunction with fig. 4, the first through holes 311 are connected to each other through the first communication holes 312, and the second through holes 411 are connected to each other through the second communication holes 412. With this arrangement, the first adjusting member 32 can be switched into a different first adjusting hole 311 through the first communicating hole 312 and the second adjusting member 42 can be switched into a different second adjusting hole 411 through the second communicating hole 412 without using a tool, and the distance between each of the first holding member 31 and the second holding member 41 and the frame 1 in the direction perpendicular to the frame 1 can be easily adjusted.

On the other hand, please refer to fig. 12 and 13, the embodiment of the present application discloses a ventilator unit. The return fan unit comprises any one of the frame assembly 10, the filter 20 and the return air box 30, and the frame assembly 10 is assembled on the return air box 30. The air return unit can be a lower air return unit or a rear air return unit.

In the above embodiment, the two filters 20 are taken as an example to illustrate the respective configurations of the locking assembly 2, the first clamping assembly 3 and the second clamping assembly 4, and a skilled person can understand that the disassembly and assembly of other numbers of filters 20 are referred to in the foregoing, and are not described again. The attachment and detachment of one filter 20 will be briefly described below.

In this case, in the preceding illustration, the second clamping assembly 4 can be eliminated, while the length of the shutter 21 of the locking assembly 2 and the length of the opening 111 become longer, as follows: the frame assembly comprises a frame 1, a locking assembly 2 and first clamping assemblies 3 (the number of the first clamping assemblies 3 can be two), the first clamping assemblies 3 are arranged at two side parts (for example, the left side and the right side) of the frame 1, and limit the filter 20 in a direction perpendicular to the frame; the locking assembly 2 is mounted on the frame 1 and can be switched between a locking state and an unlocking state, the locking assembly 2 and the first clamping assembly 3 jointly lock the filter 20 on the frame 1 in the locking state, and the filter 20 can move between the first clamping assemblies 3 and is separated from the frame 1 from the lateral direction of the frame 1 in the unlocking state. How to disassemble and assemble the filter 20 and the advantages thereof can be seen from the foregoing, and are not described in detail.

The above description is only for the purpose of illustrating the preferred embodiments of the present application and is not to be construed as limiting the present application, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present application should be included in the scope of the present application.

Claims (14)

1. A frame assembly for mounting a filter (20), comprising a frame (1), a locking assembly (2), a first clamping assembly (3) and a second clamping assembly (4), wherein:

the first clamping assembly (3) is mounted to a side portion (12) of the frame (1);

the second clamping assembly (4) is arranged in the middle of the frame (1) and limits the filter (20) with the first clamping assembly (3) in a direction perpendicular to the frame (1);

the locking assembly (2) is mounted on the frame (1) and can be switched between a locking state and an unlocking state, the locking assembly (2) locks the filter (20) to the frame (1) together with the first clamping assembly (3) and the second clamping assembly (4) in the locking state, and the filter (20) can be separated from the frame (1) from the lateral direction of the frame (1) between the first clamping assembly (3) and the second clamping assembly (4) in the unlocking state;

or the frame assembly comprises a frame (1), a locking assembly (2) and a first clamping assembly (3), the first clamping assembly (3) is mounted at two side parts of the frame (1), and the filter is limited in the direction perpendicular to the frame;

the locking assembly (2) is mounted on the frame (1) and can be switched between a locking state and an unlocking state, the locking assembly (2) and the first clamping assembly (3) jointly lock the filter (20) on the frame (1) in the locking state, and the filter (20) can move between the first clamping assembly (3) and is separated from the frame (1) in the lateral direction of the frame (1) in the unlocking state.

2. The frame assembly according to claim 1, characterized in that the frame (1) comprises an opening (111) and the locking assembly (2) comprises a flap (21), the flap (21) covering the opening (111) in the locked state and opening the opening (111) in the unlocked state.

3. The frame assembly according to claim 2, characterized in that the locking assembly (2) comprises a hinge (22) and a fixing member (23), the flap (21) is connected to the frame (1) by the hinge (22) and is rotated around the frame (1) by the hinge (22) in different directions to block or uncover the opening (111), the fixing member (23) can prevent the flap (21) from rotating in case the flap (21) blocks the opening (111);

or the baffle (21) can be assembled on the frame (1) in a sliding mode and slides along the frame (1) in different directions to block the opening (111) or open the opening (111).

4. A frame assembly according to claim 3, characterized in that the fixing member (23) is rotatably connected to the frame (1), the fixing member (23) being rotated in different directions to lock the flap (21) so that the flap (21) covers the opening (111), or to bring the flap (21) into a free state in which the flap (21) is rotatable around the frame (1) to open the opening (111).

5. The frame assembly according to claim 4, characterized in that the fixing member (23) includes a rotating portion (231), a connecting portion (232), and an abutting portion (233), the rotating portion (231) is rotatably connected to the frame (1), the abutting portion (233) and the rotating portion (231) are located at two ends of the connecting portion (232) and are opposite to each other, the abutting portion (233) abuts against the baffle (21) to lock the baffle (21) by the fixing member (23), and the abutting portion (233) avoids the baffle (21) to enable the baffle (21) to rotate around the frame (1).

6. The frame assembly according to claim 1, characterized in that said first gripping assembly (3) comprises first gripping members (31), each first gripping member (31) being distanced from said frame (1) by a distance equal to the thickness of said filter (20);

a first position adjusting structure is arranged between the first clamping piece (31) and the frame (1), and the distance between the first clamping piece (31) and the frame (1) along the direction perpendicular to the frame (1) is adjusted by adjusting the first position adjusting structure.

7. The frame assembly according to any of the claims from 1 to 6, characterized in that said first gripping assembly (3) comprises first gripping members (31), each first gripping member (31) being distanced from said frame (1) by a distance equal to the thickness of said filter (20);

at least one of the two first clamping pieces (31) can move along the frame (1) to reduce the distance between the two first clamping pieces, so that the first clamping pieces (31) can limit the filter (20) in the direction vertical to the frame (1); at least one of the two first clamping pieces (31) can move along the frame (1) to increase the distance between the two first clamping pieces so as to release the limit of the filter (20), and the filter (20) can be taken out from the front surface of the frame (1).

8. The frame assembly according to claim 1, characterized in that the first clamping assembly (3) comprises a first clamping member (31) and the second clamping assembly (4) comprises a second clamping member (41), the distance between the first clamping member (31) and the frame (1) and the distance between the second clamping member (41) and the frame (1) being equal to the thickness of the filter (20);

a first position adjusting structure is arranged between the first clamping piece (31) and the frame (1), a second position adjusting structure is arranged between the second clamping piece (41) and the frame (1), and the distance between the first clamping piece (31) and the second clamping piece (41) and the frame (1) along the direction perpendicular to the frame (1) is adjusted correspondingly by adjusting the first position adjusting structure and the second position adjusting structure.

9. The frame assembly according to any of claims 1 to 5 and 8, characterized in that the first clamping assembly (3) comprises a first clamping member (31) and the second clamping assembly (4) comprises a second clamping member (41), the distance between the first clamping member (31) and the frame (1) and the distance between the second clamping member (41) and the frame (1) being equal to the thickness of the filter (20);

at least one of the first clamping piece (31) and the second clamping piece (41) can move along the frame (1) to reduce the distance between the first clamping piece and the second clamping piece, so that the filter (20) is limited in the direction perpendicular to the frame (1); at least one of the first clamping piece (31) and the second clamping piece (41) can move along the frame (1) to increase the distance between the first clamping piece and the second clamping piece so as to release the limit of the filter (20), and the filter (20) can be taken out from the front surface of the frame (1).

10. The frame assembly according to claim 6 or 8, wherein the first position adjustment structure comprises a first adjustment member (32) and first adjustment holes (311) arranged at intervals in a direction perpendicular to the frame (1), the first adjustment holes (311) being provided in one of the frame (1) and the first clamping member (31), the first adjustment member (32) being provided in the other of the frame (1) and the first clamping member (31); the first adjusting pieces (32) are positioned in different first adjusting holes (311) and are locked to realize the adjustment of the distance between the first clamping piece (31) and the frame (1) along the direction vertical to the frame (1);

or, the first position adjusting structure comprises a first adjusting piece (32) and a first sliding mechanism arranged between the first clamping piece (31) and the frame (1), and the first clamping piece (31) slides along the first sliding mechanism to adjust the distance between the first clamping piece and the frame (1) along the direction perpendicular to the frame (1) and is fixed by the first adjusting piece (32) at the adjusted distance.

11. The frame assembly according to claim 8, wherein the second position adjustment structure comprises a second adjustment member (42) and second adjustment holes (411) arranged at intervals in a direction perpendicular to the frame (1), the second adjustment holes (411) being provided in one of the frame (1) and the second clamping member (41), the second adjustment member (42) being provided in the other of the frame (1) and the second clamping member (41); the second adjusting piece (42) is positioned in a different second adjusting hole (411) and is locked to realize the adjustment of the distance between the second clamping piece (41) and the frame (1) along the direction vertical to the frame (1);

or the second position adjusting structure comprises a second adjusting piece (42) and a second sliding mechanism arranged between the second clamping piece (41) and the frame (1), wherein the second clamping piece (41) slides along the second sliding mechanism to adjust the distance between the second clamping piece and the frame (1) along the direction perpendicular to the frame (1) and is fixed by the second adjusting piece (42) at the adjusted distance.

12. The frame assembly according to claim 11, wherein the second adjustment holes (411) are long holes, and the second adjustment members (42) are located in different second adjustment holes (411) to adjust the distance between the first clamping member (31) and the second clamping member (41);

the second adjusting piece (42) is a screw and a nut, and the second clamping piece (41) can slide relative to the nut under the damping condition and is fixed at the position after sliding.

13. The frame assembly according to claim 12, wherein a plurality of the second adjustment holes (411) arranged at intervals communicate through a second communication hole (412);

and/or the parts of the first clamping assembly (3) and the parts of the second clamping assembly (4) are the same, the first clamping piece (31) is vertically arranged on the side part (12) of the frame (1), and the second clamping piece (41) is transversely arranged on the frame (1).

14. A fan return stack comprising a frame assembly (10) according to any one of claims 1 to 13, the filter (20) and a fan return box (30), the filter (20) being mounted to the frame assembly (10), the frame assembly (10) being assembled to the fan return box (30).

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