Filter screen and duct type air conditioner

Abstract

The embodiment of the utility model provides a filter screen and a duct type air conditioner, the filter screen comprises a first filter screen part, a second filter screen part and a third filter screen part, the second filter screen part is fixed in a central area on the surface of one side of the first filter screen part, the third filter screen part is clamped between the first filter screen part and the second filter screen part, and the first filter screen part and the second filter screen part are fixed on the central area of the surface of one side of the third filter screen part. The second filter screen part covers the third filter screen part, and the mesh number of the third filter screen part is larger than the mesh number of the first filter screen part and the mesh number of the second filter screen part.

Description

Technical Field

[0001] The present application relates to the technical field of filter screens, and in particular to a filter screen and an air duct machine. Background Art

[0002] Duct air conditioners usually need to be equipped with a filter at the air inlet to purify and filter the introduced air. After the filter in the related art is installed at the air inlet of the duct air conditioner, the air intake is insufficient due to the filter mesh being too dense, or the filtering and dust removal effect is poor due to the filter mesh being too sparse, and the use requirements of the duct air conditioner cannot be met well. Utility Model Content

[0003] The embodiment of the present application provides a filter screen and an air duct machine, which can take into account both the air intake volume and the filtering and dust removal effect, and better meet the use needs of the air duct machine.

[0004] On the one hand, an embodiment of the present application provides a filter screen, comprising a first filter screen portion, a second filter screen portion and a third filter screen portion, wherein the second filter screen portion is fixed to a central area on a side surface of the first filter screen portion, the third filter screen portion is sandwiched between the first filter screen portion and the second filter screen portion, the second filter screen portion covers the third filter screen portion, and the mesh number of the third filter screen portion is greater than the mesh number of the first filter screen portion and the second filter screen portion.

[0005] In some embodiments, multiple side edges of the second filter portion are respectively fixedly connected to the first filter portion, so that the first filter portion and the second filter portion enclose a net bag portion, and the third filter portion is embedded in the net bag portion.

[0006] In some embodiments, the other side edge of the second filter portion is spaced apart from the first filter portion to form an opening end of the net bag portion between the first filter portion and the second filter portion, and the third filter portion is embedded in the net bag portion through the opening end of the net bag portion.

[0007] In some embodiments, the open end of the net bag is provided with Velcro.

[0008] In some embodiments, the filter screen further includes a support frame, and an outer edge of the first filter screen portion is fixed on the support frame.

[0009] In some embodiments, a fixing portion is provided on the support frame, and the filter screen is connected to an external structure via the fixing portion.

[0010] In some embodiments, the fixing portion is an elastic buckle foot, one end of the elastic buckle foot is fixed to the support frame, and the other end can be elastically deformed to be snap-connected with the external structure.

[0011] In some embodiments, the second filter portion is fixed to a central area of ​​a windward surface of the first filter portion, and the mesh number of the second filter portion is not greater than the mesh number of the first filter portion.

[0012] In some embodiments, the second filter portion is fixed to a central area on the leeward side of the first filter portion, and the mesh number of the second filter portion is not less than the mesh number of the first filter portion.

[0013] On the other hand, an embodiment of the present application provides an air duct machine, comprising an air duct machine body and the filter net described in the above embodiment, the air duct machine body having an air inlet, and the filter net is arranged at the air inlet.

[0014] In some embodiments, the air duct machine body includes a fan blade and a driving motor for driving the fan blade to rotate, and the driving motor is respectively arranged corresponding to the central part of the air inlet and the central area of ​​the first filter part.

[0015] The embodiment of the present application forms a three-layer filtering structure including a third filter part with a denser mesh distribution in the central area of ​​the filter net, which can more effectively adsorb and filter dust impurities in the incoming air; and in the peripheral area around the central area of ​​the filter net, a single-layer filtering structure consisting only of the peripheral area of ​​the first filter part with a sparser mesh distribution is formed, which can avoid obvious obstruction to the incoming air and ensure that the duct machine can obtain a relatively sufficient amount of incoming air. Compared with the relevant technology, the filter net provided by the embodiment of the present application has better filtering and dust removal effect and more considerable air intake, taking into account both the air intake volume and the filtering and dust removal effect to a greater extent, thereby better meeting the use needs of the duct machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 is a perspective structural diagram of a filter screen provided in some embodiments of the present application;

[0018] Figure 2 yes Figure 1 CC cross-sectional structure diagram of the middle filter;

[0019] Figure 3 is an axonometric structural diagram of a filter screen provided in some embodiments of the present application;

[0020] Figure 4 This is an axonometric structural diagram of the duct machine provided in some embodiments of the present application.

[0021] Description of main component symbols:

[0022] 1-filter, 10-first filter part, 20-second filter part, 30-third filter part, 40-Velcro, 50-support frame, 51-fixing part, 2-duct machine body, 201-air inlet, 202-fan blades, 203-driving motor. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0024] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0025] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0026] The use of "suitable for" or "configured to" in this application is meant to be open and inclusive language, which does not exclude devices that are suitable for or configured to perform additional tasks or steps. In addition, the use of "based on" is meant to be open and inclusive, because the process, step, calculation or other action "based on" one or more stated conditions or values ​​can be based on additional conditions or values ​​beyond the stated values ​​in practice.

[0027] In this application, the word "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described in this application as "exemplary" is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is given to enable any technician in the field to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, well-known structures and processes will not be elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present application.

[0028] The inventors have found that the filter screens of the related art usually have a consistent density in various areas of the surface. After such filter screens are installed at the air inlet of the duct machine, if the mesh of the filter screen is too dense, it will cause a large obstruction to the air intake, resulting in insufficient air intake, and then form a low-pressure area at the air inlet, which will hinder the rotation of the fan blades and further aggravate the problem of insufficient air intake; if the mesh of the filter screen is too sparse, it will lead to incomplete filtration of dust and impurities, resulting in poor filtering and dust removal effects and reduced air intake quality. For all these reasons, the filter screens of the related art cannot meet the use needs of the duct machine well.

[0029] like Figures 1 to 3 As shown, on the one hand, an embodiment of the present application provides a filter screen 1, which includes a first filter screen portion 10, a second filter screen portion 20 and a third filter screen portion 30, which can take into account both the air intake volume and the filtering and dust removal effect, and better meet the use needs of the duct machine.

[0030] The second filter part 20 is fixed to the central area on one side surface of the first filter part 10; here, the surface of the first filter part 10 has a central area and a peripheral area surrounding the central area, and the second filter part 20 is located in the central area and is only stacked with the central area on the first filter part 10. The third filter part 30 is sandwiched between the first filter part 10 and the second filter part 20, and the second filter part 20 covers the third filter part 30, so that the third filter part 30 belongs to the interlayer located between the first filter part 10 and the second filter part 20. The mesh number of the third filter part 30 is greater than the mesh number of the first filter part 10, and the mesh number of the third filter part 30 is greater than the mesh number of the second filter part 20, so that the mesh of the third filter part 30 is denser, and the mesh of the first filter part 10 and the second filter part 20 is sparser, so that the filter 1 forms a three-layer filtering structure with sparse layers on both sides and dense layers in the middle in the central area, and forms a single-layer filtering structure with only the first filter part 10 in the peripheral area.

[0031] In this way, when the filter screen 1 provided in the embodiment of the present application is installed at the air inlet 201 of the air duct machine, the central area of ​​the filter screen 1 has a three-layer filtering structure including the third filter screen part 30 with dense mesh distribution, which can more effectively adsorb and filter dust impurities in the incoming air; while the peripheral area surrounding the central area on the filter screen 1 is only composed of the peripheral area of ​​the first filter screen part 10, and thus only has a single-layer filtering structure with sparse mesh distribution, which can avoid obvious obstruction to the incoming air and ensure that the air duct machine can obtain a relatively sufficient amount of incoming air. Compared with the relevant technology, the filter screen 1 provided in the embodiment of the present application has a better filtering and dust removal effect and a more considerable air intake, taking into account both the air intake and the filtering and dust removal effect to a greater extent, thereby better meeting the use needs of the air duct machine.

[0032] The connection structure between the first filter part 10 and the second filter part 20 can be determined according to actual needs, and the embodiments of the present application do not limit this. In some embodiments, the edges of the second filter part 20 on multiple sides can be fixedly connected to the first filter part 10, so that the first filter part 10 and the second filter part 20 are enclosed to form a net bag part, and the third filter part 30 can be embedded in the net bag part. Here, the edge of the second filter part 20 and the first filter part 10 can be fixed by means of, for example, sewing, bonding, etc., and the embodiments of the present application do not limit this.

[0033] In some examples, the other side edge of the second filter part 20 can be spaced apart from the first filter part 10 to form an open end of the net bag part between the first filter part 10 and the second filter part 20, and the third filter part 30 can be embedded in the net bag part through the open end of the net bag part. Through the above arrangement, the third filter part 30 can be easily disassembled and assembled through the open end of the net bag part, so that the third filter part 30 can be taken out and cleaned or replaced, thereby increasing the maintainability and convenience of use of the filter 1.

[0034] For example, the opening end of the net bag portion may be provided with a Velcro 40, which is used to seal or open the opening end of the net bag portion. When the third filter portion 30 needs to be put into or taken out of the net bag portion, the Velcro 40 can be opened to open the opening end of the net bag portion; and after the third filter portion 30 is put into the net bag portion, the Velcro 40 can be re-bonded to seal the opening end of the net bag portion to prevent the third filter portion 30 from accidentally falling out of the net bag portion.

[0035] In some embodiments, the filter screen 1 may further include a support frame 50, and the outer edge of the first filter screen portion 10 is fixed on the support frame 50. By providing the support frame 50, the first filter screen portion 10 can be reliably fixed and supported, thereby increasing the structural strength and stability of the filter screen 1.

[0036] In some examples, the support frame 50 may be provided with a fixing portion 51, and the filter 1 is connected to the external structure through the fixing portion 51. For example, when the filter 1 is installed to the air inlet 201 of the air duct machine, the filter 1 can be fixedly connected to the air duct machine through the fixing portion 51 to achieve reliable installation.

[0037] The structure of the fixing portion 51 can be determined according to actual needs, and can be a type such as a support foot, a buckle, etc., which is not limited in the embodiments of the present application. For example, the fixing portion 51 can be an elastic buckle foot, one end of which is fixed to the support frame 50, and the other end can be elastically deformed and snap-connected with the external structure. By setting the fixing portion 51 as a buckle structure, the installation and fixation of the filter screen 1 can be achieved more conveniently and reliably.

[0038] The specific position of the second filter part 20 in the first filter part 10 can be determined according to actual needs, and the embodiment of the present application does not limit this. In some embodiments, the second filter part 20 can be fixed to the central area on the windward surface of the first filter part 10, and the mesh number of the second filter part 20 is not greater than the mesh number of the first filter part 10, so that the mesh density of the second filter part 20 is less than the mesh density of the first filter part 10. Here, the first filter part 10 has a relatively arranged windward surface and a leeward surface; when the air passes through the first filter part 10, it enters from the windward surface of the first filter part 10 and leaves from the leeward surface of the first filter part 10.

[0039] In this way, when air enters the air inlet 201 of the air duct unit, the air passing through the central area of ​​the filter screen 1 passes through the second filter screen part 20, the third filter screen part 30 and the first filter screen part 10 in sequence. On the one hand, since the mesh distribution of the second filter screen part 20 is relatively sparse, it can be ensured that the air passes through the second filter screen part 20 relatively smoothly and reaches the third filter screen part 30, and then is efficiently filtered by the third filter screen part 30; on the other hand, the second filter screen part 20 can shield and protect the first filter screen part 10 to a certain extent, reducing the probability that the central area of ​​the first filter screen part 10 becomes dirty quickly.

[0040] In other embodiments, the second filter part 20 can be fixed to the central area of ​​the leeward side of the first filter part 10, and the mesh number of the second filter part 20 is not less than the mesh number of the first filter part 10. In this way, when air enters the air inlet 201 of the air duct machine, the air passing through the central area of ​​the filter 1 passes through the first filter part 10, the third filter part 30 and the second filter part 20 in sequence.

[0041] like Figures 1 to 4As shown, on the other hand, an embodiment of the present application provides an air duct machine, which includes an air duct machine body 2 and a filter screen 1 of the above embodiment. Here, the air duct machine body 2 has an air inlet 201, and the filter screen 1 is arranged at the air inlet 201. The air duct machine provided in the embodiment of the present application has the above-mentioned filter screen 1, so that the air intake volume and the filtering and dust removal effect can be better taken into account.

[0042] In some embodiments, the air duct machine body 2 may include a fan blade 202 and a drive motor 203 for driving the fan blade 202 to rotate. Here, the drive motor 203 is respectively arranged corresponding to the central part of the air inlet 201 and the central area of ​​the first filter part 10. In other words, the drive motor 203 is arranged at the central position of the air inlet 201, so that the central part of the air inlet 201 is the position with the lowest air pressure; since the central area of ​​the first filter part 10 and the central part of the air inlet 201 are arranged correspondingly, the third filter part 30 is located at the central part of the air inlet 201, which can adsorb and filter dust impurities in the air to a greater extent, thereby improving the filtering effect.

[0043] The type of the fan blade 202 can be determined according to actual needs, and the embodiment of the present application does not limit this. In some examples, the fan blade 202 can be a cross-flow fan blade, and the drive motor 203 is provided with a fan blade 202 at two opposite ends along its axial direction. In this way, the drive motor 203 is located at the center of the air inlet 201, and the fan blade 202 is located at both sides of the air inlet 201.

[0044] The filter screen and the air duct machine provided in the embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A filter screen, characterized in that: It includes a first filter part, a second filter part and a third filter part, the second filter part is fixed to the central area on one side surface of the first filter part, the third filter part is sandwiched between the first filter part and the second filter part, the second filter part covers the third filter part, and the mesh number of the third filter part is greater than the mesh number of the first filter part and the second filter part.

2. The filter screen according to claim 1, characterized in that: The multiple side edges of the second filter part are respectively fixedly connected to the first filter part, so that the first filter part and the second filter part are enclosed to form a net bag part, and the third filter part is embedded in the net bag part.

3. The filter screen according to claim 2, characterized in that: The other side edge of the second filter part is spaced apart from the first filter part to form an opening end of the net bag part between the first filter part and the second filter part, and the third filter part is embedded in the net bag part through the opening end of the net bag part.

4. The filter screen according to claim 3, characterized in that: The opening end of the net bag part is provided with a Velcro.

5. The filter screen according to claim 1, characterized in that: The filter screen also includes a support frame, and the outer edge of the first filter screen part is fixed on the support frame.

6. The filter screen according to claim 5, characterized in that: The support frame is provided with a fixing part, and the filter screen is connected to the external structure through the fixing part; the fixing part is an elastic buckle foot, one end of the elastic buckle foot is fixed to the support frame, and the other end can be elastically deformed to be snap-connected with the external structure.

7. The filter screen according to claim 1, characterized in that: The second filter part is fixed to the central area of ​​the windward surface of the first filter part, and the mesh number of the second filter part is not greater than the mesh number of the first filter part.

8. The filter screen according to claim 1, characterized in that: The second filter part is fixed to the central area of ​​the leeward side of the first filter part, and the mesh number of the second filter part is not less than the mesh number of the first filter part.

9. A duct machine, characterized in that: It comprises an air duct machine body and the filter screen according to any one of claims 1 to 8, wherein the air duct machine body has an air inlet, and the filter screen is arranged at the air inlet.

10. The air duct machine according to claim 9, characterized in that: The air duct machine body includes a fan blade and a driving motor for driving the fan blade to rotate, and the driving motor is respectively arranged corresponding to the central part of the air inlet and the central area of ​​the first filter part.

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