Filter screen assembly and temperature control equipment

Abstract

The utility model provides a filter screen assembly and temperature control equipment, the filter screen assembly can be installed at the air inlet end of the temperature control equipment, the filter screen assembly comprises a frame body, a first filter screen and a second filter screen, and the frame body is used for being connected with the air inlet end of the temperature control equipment; the first filter screen is arranged on the frame body and located at the air inlet end. The second filter screen is detachably connected with the frame body; in the air inlet direction, the second filter screen and the first filter screen are sequentially arranged, and the hole diameter of the first filter screen is larger than or equal to that of the second filter screen. The first filter screen and the second filter screen are sequentially arranged in the air inlet direction, and the two filter screens are arranged, so that the impurity filtering efficiency can be improved when air enters the temperature control equipment, impurities can be further prevented from entering the temperature control equipment, the filtering performance of the filter screen assembly can be improved, and the filtering effect of the filter screen assembly can be improved; and the service life of the temperature control equipment is prolonged. The second filter screen can filter smaller impurities such as catkin and the like, and the second filter screen is matched with the first filter screen, so that the filtering performance of the filter screen assembly is improved.

Description

Technical Field

[0001] The present application relates to the field of filtration technology, and in particular to a filter assembly and a temperature control device. Background Art

[0002] At present, a filter is set at the air inlet end of the temperature control equipment. Generally, only one layer of filter is set at the air inlet end of the temperature control equipment. The filter usually only has a single filtering function. When encountering complex and changeable environments (such as long-term strong winds, seasonal falling catkins, etc.), it cannot play a good filtering effect, resulting in poor filtering effect of the filter and affecting the service life of the temperature control equipment. Utility Model Content

[0003] In view of this, the present application provides a filter assembly that solves the problem of a single filter function, poor filtering effect, and shortened service life of a temperature control device. The present application also provides a temperature control device including the filter assembly.

[0004] In order to achieve the above objectives, this application provides the following technical solutions:

[0005] A filter assembly can be installed at the air inlet end of a temperature control device, and the filter assembly includes:

[0006] A frame, used for connecting to the temperature control device;

[0007] A first filter is provided on the frame and located at the air inlet end;

[0008] a second filter screen detachably connected to the frame;

[0009] Wherein, in the air inlet direction, the second filter screen and the first filter screen are arranged in sequence, and the aperture of the first filter screen is greater than or equal to the aperture of the second filter screen.

[0010] Optionally, the frame includes:

[0011] A body, the body being connected to the air inlet end of the temperature control device, the first filter being arranged on the body, and the second filter being detachably connected to the body;

[0012] A first mounting slot is provided at one end of the body;

[0013] a second mounting slot, disposed at the other end of the body;

[0014] The notches of the first installation slot and the second installation slot are arranged opposite to each other, and the two ends of the second filter screen are respectively installed in the first installation slot and the second installation slot.

[0015] Optionally, the first mounting groove and the second mounting groove are provided at both ends of the body in the vertical direction;

[0016] In the vertical direction, the first mounting groove is located at the upper end of the second mounting groove, the size of the second filter screen is L, the groove depth of the first mounting groove is L1, the groove depth of the second mounting groove is L2, the distance between the groove bottom of the first mounting groove and the end of the second mounting groove is L3, and the distance between the groove bottom of the second mounting groove and the end of the first mounting groove is L4, wherein L, L1, L2, L3 and L4 satisfy: L1>L2, and L4<L<L3.

[0017] Optional,

[0018] The first installation slot is connected to the body via a first connecting member, and a first notch is formed in the slot wall of the first installation slot to avoid the first connecting member; and / or,

[0019] The second installation groove is connected to the body via a second connecting member, and a groove wall of the second installation groove is provided with a second notch for accommodating the second connecting member.

[0020] Optionally, a handle is provided on a side of the frame close to the second filter screen.

[0021] Optionally, the handle is rotatably connected to the frame, and by rotating the handle, the handle can be made to fit into or protrude from the plane where the first filter is located.

[0022] Optionally, the handle has a rotating shaft portion and is rotatably connected to the frame through the rotating shaft portion, and a return spring is mounted on the rotating shaft portion to enable the handle to fit against the first filter when the handle is not subjected to force.

[0023] Optionally, the frame includes a main body, the main body includes a frame portion located on a peripheral side of the main body and a connecting portion located in a middle portion of the main body, and the handle is provided on the connecting portion.

[0024] Optionally, at least one of the first filter screen or the second filter screen is formed by stacking a plurality of wavy nets, and the wave extension directions of adjacent wavy nets have an angle, and the angle is a right angle.

[0025] A temperature control device comprises a device body and the above-mentioned filter assembly installed at the air inlet end of the device body.

[0026] The filter assembly provided in the present application, by sequentially arranging the first filter and the second filter in the air inlet direction, by arranging two layers of filters, can improve the filtering efficiency of impurities when air enters the air inlet end of the temperature control device, and can further prevent impurities from entering the temperature control device, can improve the filtering performance of the filter assembly, improve its filtering effect, and thereby increase the service life of the temperature control device; at the same time, the first filter and the second filter have the effect of increasing each other's strength.

[0027] Furthermore, the aperture of the first filter is greater than or equal to the aperture of the second filter, and the second filter can filter smaller impurities such as catkins, etc. The second filter cooperates with the first filter to improve the filtering performance of the filter assembly;

[0028] Furthermore, due to the seasonal and regional characteristics of catkins, that is, catkins are only present for a few months of the year, some areas have catkins and other impurities, while other areas do not. The second filter is detachably connected to the frame, so that when the second filter is clogged with impurities, the second filter can be removed and cleaned, and then installed on the frame again after cleaning, which can improve the convenience of cleaning the second filter. Secondly, when there are no impurities such as catkins in the working environment, the second filter can be omitted, so it can adapt to the needs of various working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0030] Figure 1 A schematic structural diagram of the filter assembly provided in this embodiment;

[0031] Figure 2 is a front view of the filter assembly;

[0032] Figure 3 is a side view of the filter assembly;

[0033] Figure 4 It is a side view of a wavy net;

[0034] Figure 5 This is a top view of two adjacent wavy nets.

[0035] Figure 1-Figure 5 middle:

[0036] 1-frame, 2-first filter, 3-first connecting piece, 4-second connecting piece, 5-handle;

[0037] 11-body, 12-first mounting slot, 13-second mounting slot, 21-wavy net;

[0038] 111 - frame portion, 112 - connection portion, 121 - first slot wall, 131 - second slot wall;

[0039] 1211-first gap, 1311-second gap. DETAILED DESCRIPTION

[0040] The present application provides a filter assembly and a temperature control device including the filter assembly.

[0041] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] like Figures 1 to 5 As shown, an embodiment of the present application provides a filter assembly that can be installed at the air inlet end of a temperature control device, and the filter assembly is used to filter impurities in the gas directed to the temperature control device. The filter assembly mainly includes a frame 1, a first filter 2 and a second filter, and the first filter 2 and the second filter are both used to filter impurities. The frame 1 is used to connect to the air inlet end of the temperature control device, wherein the connection between the frame 1 and the temperature control device can be a fixed connection or a detachable connection; the first filter 2 is arranged on the frame 1 and is located at the air inlet end, specifically by installing the frame 1 to the air inlet end of the temperature control device, so that the first filter 2 can achieve a filtering effect at the air inlet end. The second filter is detachably connected to the frame 1, and the second filter is also arranged at the air inlet end of the temperature control device to perform double filtering on the gas entering the temperature control device to improve the filtering effect of the gas; and since the second filter is detachably connected to the frame 1, when the second filter filters impurities in the gas guided into the temperature control device, after the mesh of the second filter is blocked by impurities, the second filter is removed from the frame 1 and the filter is cleaned to improve the convenience of cleaning the filter.

[0043] Furthermore, in the air inlet direction, the second filter and the first filter 2 are arranged in sequence, and the aperture of the first filter 2 is greater than or equal to the aperture of the second filter. Specifically, when the temperature control device is working, when the external gas enters the temperature control device through the air inlet end, the gas first passes through the second filter and then passes through the first filter 2. The second filter and the first filter 2 cooperate to achieve double filtration of the gas, thereby improving the filtration efficiency of the gas and further preventing impurities from entering the temperature control device. In addition, ensuring that the aperture of the first filter 2 is greater than or equal to the aperture of the second filter can enable the second filter to filter impurities with smaller diameters in the air, thereby improving the filtering effect of impurities in the air. The first filter 2 can play a role of re-filtration. The first filter 2 and the second filter cooperate to enable the filter assembly to achieve a double filtration effect.

[0044] It should be noted that the air inlet direction refers to the direction perpendicular to the first filter screen 2 .

[0045] It should also be noted that the second filter is not shown in the figure. The second filter includes a frame and a filter disposed within the frame. The frame is detachably connected to the frame 1 to achieve a detachable connection between the second filter and the frame 1. In the air inlet direction, the second filter and the first filter 2 are arranged in sequence, that is, the second filter is located on the outside and the first filter 2 is located on the inside, and the second filter covers the first filter 2.

[0046] It should also be noted that willow catkins are seasonal and regional. When the temperature control device is set up in an environment with willow catkins, the second filter is installed at the air inlet end of the temperature control device. When the temperature control device is used in an environment without willow catkins, the second filter is removed. Here, the second filter is detachably connected to the frame, so that when the second filter is not in use, that is, when the temperature control device is used in an environment without willow catkins, the second filter can be easily removed.

[0047] The filter assembly of the above structure, by sequentially disposing a first filter 2 and a second filter in the direction of air intake, can improve the efficiency of filtering impurities when air enters the temperature control device by providing two layers of filters. This can further prevent impurities from entering the temperature control device, thereby improving the filtering performance of the filter assembly, enhancing its filtering effect, and thereby increasing the service life of the temperature control device. When the second filter is installed, the first filter 2 can provide support for the second filter, thereby enhancing the strength of the second filter. Of course, when the second filter is in the installed state, the second filter plays the primary filtering role, and the filtering effect of the first filter is not significant.

[0048] In some embodiments, the frame 1 includes a body 11 and a first mounting slot 12. The body 11 is used to connect to the air inlet end of the temperature control device. The first filter 2 is set on the body 11, and the second filter is detachably connected to the body 11. The first mounting slot 12 is set at one end of the body 11; the second mounting slot 13 is set at the other end of the body 11. The notches of the first mounting slot 12 and the second mounting slot 13 are arranged relative to each other, and the two ends of the second filter are respectively installed in the first mounting slot 12 and the second mounting slot 13. Specifically, when the second filter is installed on the frame 1, the two ends of the second filter are respectively slidably connected to the first mounting slot 12 and the second mounting slot 13. The second filter is installed in the first mounting slot 12 and the second mounting slot 13 from the sides of the first mounting slot 12 and the second mounting slot 13 to achieve the installation of the second filter, thereby improving the convenience of installing the second filter.

[0049] Furthermore, in order to improve the stability of the second filter after being installed in the first mounting groove 12 and the second mounting groove 13, after the second filter is installed in the first mounting groove 12 and the second mounting groove 13, a clip or a magnetic part is set between the first mounting groove 12 and / or the second mounting groove 13 and the second filter to limit the installed second filter, thereby preventing the second filter from shaking when the temperature control equipment vibrates or the external wind speed is high, thereby ensuring the stability of the installation of the second filter.

[0050] Further, in some embodiments, see Figure 3The first mounting groove 12 and the second mounting groove 13 are arranged at both ends of the body 11 in the vertical direction; in the vertical direction, the first mounting groove 12 is located at the upper end of the second mounting groove 13, the size of the second filter screen is L, the groove depth of the first mounting groove 12 is L1, the groove depth of the second mounting groove 13 is L2, the distance between the groove bottom of the first mounting groove 12 and the end of the second mounting groove 13 is L3, and the distance between the groove bottom of the second mounting groove 13 and the end of the first mounting groove 12 is L4, among which L, L1, L2, L3 and L4 satisfy: L1>L2, and L4<L<L3. Here, it is ensured that the dimensions of the first installation groove 12 and the second installation groove 13 are within the above range. With this arrangement, the second filter screen can also be installed in another way, that is, the operator installs it on the opposite side of the first filter screen 2. The specific installation method is as follows: First, the operator moves the second filter screen to a position facing the first filter screen 2; then, the second filter screen is tilted so that the top of the second filter screen fits the bottom of the second installation groove 13. Since L4<L<L3, the bottom end of the second filter screen now exceeds the top end of the second groove wall 131 of the second installation groove 13 in the vertical direction; then, ensure that the second filter screen The top of the second filter screen is in contact with the bottom of the first installation groove 12, and the bottom end of the second filter screen is rotated toward the position of the first filter screen 2, so that the bottom end of the second filter screen is located above the bottom of the second installation groove 13; finally, the operator releases the second filter screen. At this time, the bottom end of the second filter screen moves to abut against the bottom of the second installation groove 13 under the action of gravity. Since L1>L2 and L4<L<L3, after the bottom end of the second filter screen is located at the bottom of the second installation groove 13, the top end of the second filter screen is also higher than the bottom end of the first groove wall 121, thereby realizing the installation of the second filter screen.

[0051] It should be noted that this installation method is used when the second filter cannot be installed on the frame 1 from the side of the first installation groove 12 and the second installation groove 13, that is, there are other components on both sides of the frame 1 that block the installation of the second filter, and the other components will interfere with the installation of the second filter from the side of the first installation groove 12 and the second installation groove 13.

[0052] For example, the vertical direction of the body 11 is Figure 3 The direction indicated by the double-headed arrow A.

[0053] Here, by installing the first mounting groove 12 and the second mounting groove 13 in the above-mentioned manner, the convenience of installing the second filter can be improved and the difficulty of installing the second filter can be reduced, so that the second filter can be installed on the frame 1 in a variety of ways. When one of the installation methods cannot achieve the installation of the second filter, the second filter can be installed by other methods, thereby improving the selectivity of the installation of the second filter.

[0054] It should be noted that the groove wall of the first installation groove 12 refers to the first groove wall 121 , and the groove wall of the second installation groove 13 refers to the second groove wall 131 .

[0055] In some embodiments, the first mounting slot 12 is connected to the body 11 via the first connector 3, and the slot wall of the first mounting slot 12 defines a first notch 1211 that avoids the first connector 3. Alternatively, the second mounting slot 13 is connected to the body 11 via the second connector 4, and the slot wall of the second mounting slot 13 defines a second notch 1311 that avoids the second connector 4. For example, the first connector 3 and the second connector 4 may be structures such as rivets or bolts to achieve the connection between the first mounting slot 12 and the body 11, and between the second mounting slot 13 and the body 11. By defining the first notch 1211 in the first slot wall 121 to avoid the first connector 3, and / or defining the second notch 1311 in the second slot wall 131 to avoid the second connector 4, after the second filter screen is installed between the first mounting slot 12 and the second mounting slot 13, the protrusion of the second filter screen caused by the first connector 3 and the second connector 4 can be avoided, facilitating installation of the second filter screen. Furthermore, the first connecting member 3 and the second connecting member 4 are set as flat-head rivets, which can reduce the protrusion size of the first connecting member 3 and the second connecting member 4, thereby reducing the protrusion of the second filter screen caused by the first connecting member 3 and the second connecting member 4 after the second filter screen is installed.

[0056] In some embodiments, a handle 5 is provided on the side of the frame 1 near the second filter. Specifically, the first filter 2 is provided on the frame 1, and the first filter 2 is installed by installing the frame 1 to the air inlet end of the temperature control device. Here, by providing the handle 5 on the side of the frame 1 near the second filter, the frame 1 can be easily taken out and placed, and the first filter 2 can be easily taken out and placed. The handle 5 is provided to facilitate the operator's grip.

[0057] In some embodiments, the handle 5 is rotatably connected to the frame 1. By rotating the handle 5, the handle 5 can be made to fit in or protrude from the plane where the first filter 2 is located. Since the second filter and the first filter 2 are arranged sequentially in the air inlet direction, in order to improve the filtering efficiency of the first filter 2 and the second filter for impurities, the first filter 2 and the second filter are arranged adjacent to each other, and the distance between the first filter 2 and the second filter is small. Here, the handle 5 is rotatably connected to the frame 1. In this arrangement, after the frame 1 and the first filter 2 are installed, the handle 5 is rotated so that the handle 5 fits in the plane where the first filter 2 is located to facilitate the installation of the second filter. This can reduce the interference of the handle 5 on the second filter and improve the installation efficiency of the second filter. When the frame 1 and the first filter 2 need to be removed, the handle 5 is rotated so that the handle 5 protrudes from the plane where the first filter 2 is located. This makes it easier for the operator to remove the frame 1 and the first filter 2 from the temperature control device using the handle 5.

[0058] Furthermore, in some embodiments, the handle 5 has a rotating shaft portion (not shown in the figure) and is rotatably connected to the frame 1 through the rotating shaft portion, and a return spring (not shown in the figure) is provided on the rotating shaft portion to make the handle 5 fit against the first filter 2 when the handle 5 is not subjected to force. Specifically, when the operator does not apply a rotational force to the handle 5, the handle 5 will fit against the first filter 2 under the elastic force of the return spring; and when the operator applies a rotational force to the handle 5, the handle 5 will overcome the elastic force of the return spring and protrude from the surface of the first filter 2, so that the subsequent operator can take and place the frame 1 by holding the handle 5. Here, a return spring is added on the basis of the above embodiment so that the handle 5 can automatically snap onto the first filter 2 when it is not in use to avoid interfering with the installation of the second filter. This arrangement improves the convenience of setting and using the handle 5.

[0059] In some embodiments, the frame 1 includes a main body 11, which includes a frame portion 111 located on the periphery of the main body 11 and a connecting portion 112 located in the middle of the main body 11. Specifically, the frame portion 111 is assembled from a plurality of H-shaped aluminum profiles, and the first filter 2 is disposed in the middle of the H-shaped aluminum profile to secure and clamp the first filter 2. Since the main body 11 is large in size and has poor bending resistance such as stability, by disposing the connecting portion 112 in the middle of the main body 11, the connecting portion 112 can act as a reinforcing rib to enhance the stability of the main body 11. Furthermore, the handle 5 is disposed on the connecting portion 112, that is, the handle 5 is disposed in the middle of the main body 11. This improves the convenience of the operator in grasping the frame 1 via the handle 5, and also balances the force on the frame 1 when grasping the frame 1 via the handle 5, so that the frame 1 can be taken and placed more easily via the handle 5.

[0060] In some embodiments, see Figure 4 At least one of the first filter screen 2 or the second filter screen is formed by stacking multiple wavy meshes 21. Exemplarily, only the first filter screen 2 is formed by stacking multiple wavy meshes 21; only the second filter screen is formed by stacking multiple wavy meshes 21; and both the first filter screen 2 and the second filter screen are formed by stacking multiple wavy meshes 21. Here, by stacking the first filter screen 2 and / or the second filter screen with multiple meshes, not only the structural strength of the first filter screen 2 and / or the second filter screen can be improved, but also their filtering capacity can be improved. Moreover, by forming the first filter screen 2 and / or the second filter screen with the wavy mesh 21, when the incoming air flow rate is high or in strong winds, the wavy mesh has better stability and is less likely to be damaged by the wind, thereby extending the service life of the first filter screen 2 and / or the second filter screen.

[0061] In some embodiments, the waves of adjacent wavy meshes 21 extend at an angle. This arrangement makes the filter less susceptible to damage during high airflow or strong winds, further enhancing the structural stability of the first and second filter screens. Furthermore, the angle between the waves of adjacent wavy meshes 21 further reduces the filter pore size, further enhancing the filter's ability to filter impurities.

[0062] For example, the wave extension direction of the wavy net 21 is Figure 4 The direction indicated by the double-headed arrow X.

[0063] In some embodiments, the angle between the wave extension directions of adjacent wavy nets 21 is a right angle. For example, in two adjacent layers of wavy nets 21, the wave extension direction of one wavy net 21 extends in the vertical direction, and the wave extension direction of the other wavy net 21 extends in the horizontal direction. Figure 4 and Figure 5 As shown, the wave extension direction of a wave-shaped net 21 is Figure 4 and Figure 5 The direction indicated by the double-headed arrow X in the middle, the direction in which the waves of the other wavy net 21 extend is Figure 5 In the direction indicated by the double-headed arrow Y. Such an arrangement can further enhance the structural strength of the first filter screen 2 and / or the second filter screen composed of the plurality of wavy meshes 21, and further enhance the filtering performance thereof.

[0064] A temperature control device includes a device body and the aforementioned filter assembly mounted on the air inlet end of the device body. Since the temperature control device includes the aforementioned filter assembly, the beneficial effects of the temperature control device brought about by the filter assembly are described above and will not be repeated here.

[0065] The basic principles of the present application have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, and effects mentioned in this application are merely illustrative and not restrictive, and it should not be assumed that these advantages, strengths, and effects are required of each embodiment of this application. In addition, the specific details disclosed above are merely illustrative and facilitating understanding, and are not restrictive. The above details do not limit this application to necessarily being implemented using the above specific details.

[0066] The block diagrams of the devices, devices, equipment, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, devices, equipment, and systems can be connected, arranged, or configured in any manner. Words such as "include," "comprise," "have," and the like are open-ended words, meaning "including but not limited to," and can be used interchangeably therewith. The words "or" and "and" used herein refer to the words "and / or" and can be used interchangeably therewith, unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to," and can be used interchangeably therewith.

[0067] It should also be noted that in the apparatus, device, and method of the present application, each component or each step can be decomposed and / or recombined, and such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0068] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0069] It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used to more clearly illustrate the technical solutions and cannot be used to limit the scope of protection of the present application.

[0070] The above description has been provided for the purpose of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A filter assembly, characterized in that: It can be installed at the air inlet end of the temperature control equipment. The filter assembly includes: A frame, used for connecting to the air inlet end of the temperature control device; A first filter is provided on the frame and located at the air inlet end; a second filter screen detachably connected to the frame; In which, in the air inlet direction, the second filter screen and the first filter screen are arranged in sequence, and the aperture of the first filter screen is larger than the aperture of the second filter screen; at least one of the first filter screen or the second filter screen is formed by stacking multiple wavy nets, and the wave extension directions of adjacent wavy nets have an angle.

2. The filter assembly according to claim 1, characterized in that The frame comprises: A body, the body being connected to the air inlet end of the temperature control device, the first filter being disposed on the body, and the second filter being detachably connected to the body; A first mounting slot is provided at one end of the body; a second mounting slot, disposed at the other end of the body; The notches of the first installation slot and the second installation slot are arranged opposite to each other, and the two ends of the second filter screen are respectively installed in the first installation slot and the second installation slot.

3. The filter assembly according to claim 2, characterized in that The first mounting groove and the second mounting groove are provided at both ends of the body in the vertical direction; In the vertical direction, the first mounting groove is located at the upper end of the second mounting groove, the size of the second filter screen is L, the groove depth of the first mounting groove is L1, the groove depth of the second mounting groove is L2, the distance between the groove bottom of the first mounting groove and the end of the second mounting groove is L3, and the distance between the groove bottom of the second mounting groove and the end of the first mounting groove is L4, wherein L, L1, L2, L3 and L4 satisfy: L1>L2, and L4<L<L3.

4. The filter assembly according to claim 3, characterized in that The first installation slot is connected to the body via a first connecting member, and a first notch is formed in the slot wall of the first installation slot to avoid the first connecting member; and / or, The second installation groove is connected to the body via a second connecting member, and a groove wall of the second installation groove is provided with a second notch for accommodating the second connecting member.

5. The filter assembly according to claim 1, wherein: A handle is provided on one side of the frame close to the second filter screen.

6. The filter assembly according to claim 5, characterized in that The handle is rotatably connected to the frame, and by rotating the handle, the handle can be made to fit in or protrude from the plane where the first filter is located.

7. The filter assembly according to claim 6, characterized in that The handle has a rotating shaft portion and is rotatably connected to the frame through the rotating shaft portion. A return spring is sleeved on the rotating shaft portion to enable the handle to fit against the first filter when the handle is not subjected to force.

8. The filter assembly according to claim 5, characterized in that The frame includes a main body, which includes a frame portion located on the periphery of the main body and a connecting portion located in the middle of the main body. The handle is arranged on the connecting portion.

9. The filter assembly according to claim 1, wherein: The angle is a right angle.

10. A temperature control device, characterized in that: The invention comprises an equipment body and a filter assembly as described in any one of claims 1 to 9, which is installed at the air inlet end of the equipment body.

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