WO2021139490A1 - 过滤消音器及空调设备 - Google Patents

过滤消音器及空调设备 Download PDF

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Publication number
WO2021139490A1
WO2021139490A1 PCT/CN2020/136110 CN2020136110W WO2021139490A1 WO 2021139490 A1 WO2021139490 A1 WO 2021139490A1 CN 2020136110 W CN2020136110 W CN 2020136110W WO 2021139490 A1 WO2021139490 A1 WO 2021139490A1
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WO
WIPO (PCT)
Prior art keywords
cylinder
filter
prefabricated
flanging
silencer
Prior art date
Application number
PCT/CN2020/136110
Other languages
English (en)
French (fr)
Inventor
王文杰
单宇宽
金烨
Original Assignee
浙江盾安人工环境股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 浙江盾安人工环境股份有限公司 filed Critical 浙江盾安人工环境股份有限公司
Priority to JP2022529622A priority Critical patent/JP7348399B2/ja
Priority to KR1020227017743A priority patent/KR20220083835A/ko
Publication of WO2021139490A1 publication Critical patent/WO2021139490A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28—Arrangement or mounting of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat

Definitions

  • This application relates to the field of air conditioning control technology, and in particular to a filter muffler and air conditioning equipment.
  • the filter silencer is a pipe-like device used to reduce airflow noise and filter fluid impurities. It is widely used in the field of air conditioning. Its working principle is to use sound absorption devices, elbows, sudden changes in the pipe cross-sectional area or a combination of them. The noise in the pipeline is attenuated or reflected.
  • a filter muffler currently in use is composed of two oppositely sleeved cylinders with varying cross-sectional diameters and a filter screen located in the middle of the diameter reducing cylinder. The fixed part of the filter screen is clamped between the two sleeved reducing diameters. Between the walls of the cylinder.
  • the fixed clamping part of the filter screen is subjected to the pressure and deformation of the cylinder body, which will cause stress rebound phenomenon, which makes the cylinder body difficult or impossible to press in, which affects the assembly stability of the filter muffler.
  • the large deformation of the fixed clamping part can also cause the hidden danger of damaging the filter, and it is difficult to guarantee the product quality of the filter muffler.
  • a filter muffler including a first cylinder, a second cylinder, and a filter screen installed between the first cylinder and the second cylinder, the filter including a mesh body and The prefabricated outer flanging connected to the net body, the prefabricated outer flanging is formed from the end of the net body, the flanging angle of the prefabricated outer flanging is greater than 90°, and the filter screen is covered with the second cylinder through the prefabricated outer flanging At the end of the first cylinder, a filter screen is sheathed.
  • the flanging angle of the prefabricated outer flanging is greater than 150°.
  • the prefabricated outer flanging is arranged in parallel with the net body, an annular gap is formed between the prefabricated flanging and the net body, and the second cylinder is inserted and fixed in the annular gap.
  • the prefabricated outer flanging has a ring shape; or, the prefabricated outer flanging includes a plurality of mutually spaced flanging parts, and the plurality of mutually spaced flanging parts are arranged around the center line of the net body.
  • the first cylinder includes a fixing part for the second cylinder to extend into and fix the second cylinder, and the end of the prefabricated outer flange is flush with the end of the fixing part.
  • the first cylinder includes a noise reduction part, a fixing part, and a stage connecting the noise reduction part and the fixing part.
  • the inner diameter of the fixing part is larger than the inner diameter of the noise reduction part, and the stage stage is used to restrict the second cylinder from extending into the first stage.
  • the depth of the cylinder; the shape of the section along the axial direction at the stage is an arc or a straight section.
  • prefabricated outer flanging is welded and fixed with the first cylinder
  • prefabricated flanging is welded and fixed with the second cylinder.
  • the filter silencer further includes a first sleeve and a second sleeve.
  • the first sleeve is disposed on the side of the first cylinder relatively far away from the second cylinder, and the second sleeve is disposed on the second cylinder relatively far away from the second cylinder.
  • the application also provides an air conditioner, which adopts the filter muffler in any one of the above technical solutions.
  • the present application has the following progress compared with the traditional technology: the filter screen is provided with a prefabricated outer flanging with a flanging angle greater than 90°, so that the angle between the prefabricated outer flanging and the mesh body is less than 90°, which means The diameter of its cross-section gradually increases along the pressing direction of the first cylinder, which can provide a guiding effect when the first cylinder is press-fitted, so as to prevent the strain from the outer flanging of the filter from being squeezed by the first cylinder.
  • the spring phenomenon solves the problem that the cylinder is difficult to press into; in addition, after the filter is installed, the distortion and bending amplitude of the prefabricated outer flange material is also reduced.
  • Fig. 1 is a schematic structural diagram of a filter muffler according to an embodiment of the application.
  • FIG. 2 is a schematic diagram of the structure of the filter silencer after splitting in an embodiment of the application.
  • Fig. 3 is a schematic diagram of an embodiment of a filter according to this application.
  • FIG. 4 is a schematic structural diagram of an embodiment of the filter net of this application.
  • FIG. 5 is a schematic diagram of another embodiment of the filter net of this application.
  • Fig. 6 is an enlarged schematic diagram of A in the filter silencer shown in Fig. 1.
  • Fig. 7 is an enlarged schematic diagram of B in the filter silencer shown in Fig. 2.
  • Fig. 8 is a schematic structural diagram of B in another embodiment of the filter silencer shown in Fig. 2.
  • Filter silencer 100 First cylinder 10 The inner cavity of the first cylinder 11 Fixed part 12
  • Second cylinder 20 The inner cavity of the second cylinder twenty one Filter 30 Net body 31 Prefabricated flanging 32 Annular slot 33 Annular gap 331 First casing 40 Second casing 50
  • a component when referred to as being "installed on” another component, it can be directly installed on the other component or a centered component may also exist. When a component is considered to be “installed on” another component, it can be directly installed on another component or a centered component may exist at the same time. When a component is considered “fixed” to another component, it can be directly fixed to the other component or there may be a centered component at the same time.
  • FIG. 1 is a schematic structural diagram of a filter silencer 100 in an embodiment of the application.
  • the filter muffler 100 is used to reduce airflow noise.
  • the filter muffler 100 is used to reduce the noise of the air conditioner.
  • the filter silencer 100 may also be used in other types of air conditioning control applications such as blowers, air-cooled equipment, and the like.
  • the filter silencer 100 includes a first cylinder 10, a second cylinder 20, and a filter mesh 30 installed between the first cylinder 10 and the second cylinder 20.
  • the first cylinder 10 and the second cylinder 20 are pipes with varying diameters and are installed relative to each other, and the two cylinders and the filter screen are both fixedly connected.
  • the filter 30 also functions as a sound-absorbing lining. noise.
  • the second cylinder 20 serves as the installation base of the filter screen 30.
  • the filter mesh body 31 enters the inner cavity 21 of the second cylinder body, the end of the second cylinder body 20 abuts against the fixed clamping section of the filter mesh, and the inner cavity 21 of the second cylinder body accommodates the filter mesh body 31.
  • the second cylinder 20 has a hollow cylindrical shape with different cross-sectional areas. It is understandable that, in other embodiments, the second cylinder 20 can also be a square cylinder or a long pipe with an elbow. As long as it is provided with a cross section with abrupt changes in area, the internal acoustic impedance can be discontinuous. That's it.
  • the filter screen 30 serves as a sound absorbing device and a filtering device inside the filter muffler 100, and functions as a sound absorbing lining and filtering fluid impurities.
  • the filter net 30 includes a net body 31 and a fixed clamping section extending from the end of the net body and bent at a certain angle.
  • the net body 31 has a revolving structure with one end protruding in the axial direction and the protruding end closed, and the other end is open.
  • the net body 31 and the fixed clamping section are integrally formed.
  • the net body 31 is accommodated in the inner cavity 21 of the second cylinder body, and the end surface of the fixed clamping section close to the axially protruding side of the net body abuts against the end of the second cylinder body 20, so that the second cylinder body 20 and the filter
  • the net 30 is installed as a whole and inserted into the inner cavity 11 of the first cylinder. Under the squeeze of the first cylinder 10, the fixed clamping section deforms and is fixed between the tube wall of the first cylinder 10 and the tube wall of the second cylinder 20 opposite to it.
  • the mesh body 31 is cylindrical. It can be understood that in other embodiments, the mesh body may also be conical or hemispherical, as long as it has a filter and sound absorption effect and has a closed surface at one end. That's it.
  • the first cylinder 10 is used to sleeve the second cylinder 20 and the filter screen 30.
  • Assembly process The filter screen 30 is sleeved on the second cylinder body 20 through a fixed clamping section, and the first cylinder body 10 is pressed against the whole formed by the second cylinder body 20 and the filter screen 30, under the squeeze of the first cylinder body 10 , The fixed clamping section is deformed.
  • the tube wall of the first cylinder 10, the fixed clamping section deformed under pressure, and the tube wall of the second cylinder 20 form a radial tight fit.
  • the inner diameter of the pipe at the press-in end of the first cylinder 10 is larger than the pipe outer diameter of the second cylinder 20 that can extend into the cavity 11 of the first cylinder, and the pipe at the press-in end of the first cylinder 10 has an inner diameter larger than that after it is press-in.
  • the first cylinder 10 is a pipe with multiple cross-sectional diameters that has almost the same shape as the second cylinder 20. It is understandable that in other embodiments, the first cylinder may also be a square cylinder.
  • the shape of a long pipe with an elbow, as long as it is provided with a cross section with a sudden change in area, can realize the discontinuity of the internal acoustic impedance and is not limited to a circular tube.
  • the folding angle of the fixed clamping section of the filter screen relative to the opening direction of the screen body is relatively small, so the included angle between the fixed clamping section and the screen body, that is, the supplementary angle of the above folding angle is relatively large.
  • the fixed clamping section undergoes a large deformation under pressure, and a springback stress is generated, so that the installation operator cannot quickly, conveniently, and save effort to press the first cylinder toward the filter
  • the net and the second cylinder are integrally formed with a filter; in addition, the fixed clamping section has a large deformation before and after the first cylinder is pressed into and sleeved, and the material is twisted and bent sharply, which may cause the filter during the assembly process.
  • the fixed clamping part and even the mesh body are damaged, and it is difficult to guarantee the product quality of the filter muffler after assembly.
  • FIG. 2 is a schematic diagram of the structure of the filter silencer 100 after disassembly in an embodiment of this application
  • FIG. 3 is a schematic diagram of an embodiment of a filter screen of this application.
  • the prefabricated outturned edge 32 extends outward from the end of the net body 31 and is integrally formed with the net body 31.
  • the flanging angle of the prefabricated outer flanging 32 is greater than 90°, and after flanging, the included angle between the prefabricated flanging 32 and the net body 31 is less than 90°.
  • the flanging angle greater than 90° means that the end portion of the mesh body 31 to be flanged starts from the left side of the filter opening shown in FIG. 3, and is flanged in a clockwise direction with a flip angle ⁇ greater than 90° , Reaching the right side of the filter opening, at this time the ⁇ angle is the flanging angle.
  • the included angle ⁇ between the outer flanging 32 and the net body 31 is less than 90°. As shown in Fig. 2, the two sides of ⁇ are the prefabricated outer flanging 32 and the side wall of the net body 31, the angle is the starting point of flanging, and the included angle ⁇ and the flanging angle ⁇ are complementary angles.
  • the prefabricated outer flange 32 has the same function as the fixed clamping section, and is also fixed between the tube wall of the first cylinder 10 and the opposite tube wall of the second cylinder 20 to form a radial tight fit.
  • the process of installing the filter silencer 100 is as follows: the second cylinder body 20 first extends into the annular cavity 33 represented by the included angle ⁇ , and the filter screen 30 is sleeved on the second cylinder body 20 through the prefabricated outer flange 32. Then the second cylinder 20 and the filter net 30 are inserted into the first cylinder cavity 11 as a whole, and the first cylinder 10 is sleeved with the filter net 30.
  • the included angle ⁇ between the prefabricated outer flanging 32 and the net body 31 is less than 90°, which reduces the rebound stress generated by the bending deformation of the outer flanging 32 material, and solves the first problem.
  • the cylinder 10 cannot be pressed in; in addition, due to the prefabricated outer flange 32 and the setting of the included angle ⁇ of less than 90°, in the direction in which the first cylinder 10 is pressed into the filter 30, the cross-sectional area of the filter 30 It is not a sudden increase, but a gradual increase, that is, the prefabricated outer flange 32 can provide a guiding function for the first cylinder 10 during the pressing process of the first cylinder 10 to facilitate the pressing of the first cylinder 10.
  • FIG. 4 is a schematic structural diagram of an embodiment of the filter screen of the present application.
  • the flanging angle ⁇ of the prefabricated flared edge is greater than 150°, and the angle ⁇ between the prefabricated flared edge 32 and the net body 31 is less than 30°.
  • the smaller the included angle ⁇ is, the smaller the springback stress of the prefabricated flared edge 32 when it is squeezed and sleeved by the first cylinder 10, and the smaller the bending and bending amplitude of the material at the flared edge, the prefabricated flared edge
  • the guiding effect of the edge 32 is also more pronounced, so that the first cylinder body 10 can be press-fitted more easily with this arrangement.
  • FIG. 5 is a schematic structural diagram of another embodiment of the filter according to the present application.
  • the prefabricated overturned edges 32 are arranged in parallel with the net body 31, and an annular gap 331 is formed between the prefabricated overturned edges 32 and the mesh body 31, and the second cylinder body 20 can be inserted into the annular gap 331.
  • the prefabricated outer flanging 32 has the smallest degree of twisting and bending caused by the extrusion of the first cylinder 10, and there is almost no springback stress. Such an arrangement can significantly reduce the difficulty of press-fitting the first cylinder 10.
  • the shape of the prefabricated outer flanging 32 is not limited to the ring shape defined in the description of the drawings, but can also be determined according to the processing method of the filter screen. For example, a plurality of flanging structures that are isolated from each other and arranged around the center line of the mesh body are selected. The structure makes it easier to implement the flanging process in the process of processing the filter, and further reduces the deformation of the material at the flanging part, thereby reducing the damage to the surface of the filter, ensuring the processing quality of the filter product, and improving the yield of the filter. .
  • FIG. 6 is an enlarged schematic diagram of A in the filter silencer shown in FIG. 1.
  • the end of the first cylinder 10 is provided with a fixing part 12, the inner diameter of the fixing part is larger than the outer diameter of the second cylinder 20 opposite to the first cylinder 10, for the second cylinder 20 to extend into the first cylinder
  • the second cylinder 20 is fixed in the cavity 11.
  • the end of the prefabricated outer flanging 32 is flush with the first cylinder fixing part 12, and this arrangement can ensure that the prefabricated outer flanging 32 and the first cylinder fixing part 12 are fully melted when welding parts, and they are fixed as a whole and tightly connected. .
  • Fig. 7 is an enlarged schematic diagram of B in the filter silencer shown in Fig. 2
  • Fig. 8 is a schematic structural diagram of B in the filter silencer shown in Fig. 2 in another embodiment.
  • the first cylinder 10 is arranged in a structure with different inner wall diameters, and includes a noise reduction part 13, a fixed part 12, and a stage 14 located between the noise reduction part and the fixed part.
  • the diameter of the inner wall of the fixed portion 12 is larger than the diameter of the outer wall of the second cylinder 20 and its opposite side, that is, the second cylinder 20 can be inserted and removed freely in the fixed portion 12, and the second cylinder 20 extends into the first cylinder cavity 11
  • the end on one side abuts against the stage 14, and the stage 14 is used to limit the depth of the second cylinder 40 extending into the first cylinder 20.
  • the cross-sectional shape of the inner wall surface of the stage 14 along the axial direction is a circular arc or a straight line segment.
  • the arc-shaped cross-sectional shape can make the stage 14 and the flanging start of the prefabricated outer flanging 32 form a surface contact, which has a larger contact area than a line contact to obtain a more secure positioning; a straight-line section shape It is obtained by traditional hole processing methods, such as using a drill to drill a straight-line section of the stage section.
  • the cross-sectional shape of the stage 14 may also be other shapes, such as a stepped shape or a stage with a raised inner surface, as long as the second barrel can be restricted.
  • the depth 20 extends into the first cylinder 10 is sufficient, and is not limited to the shape shown in FIGS. 6 and 7.
  • the first cylinder body 10, the second cylinder body 20 and the filter screen 30 after installation are fixed by welding.
  • the prefabricated outer flanging 32 and the first cylinder 10 can be welded and fixed at their mating position, or the prefabricated outflanging 32 and the second cylinder 20 can be welded and fixed at their mating position, or the above two types can be used.
  • the combination of the solutions, that is, the first cylinder body 10, the second cylinder body 20, and the prefabricated outer flange 32 are all fixed as a whole by welding, so as to obtain a reliable fixed connection.
  • the installed filter muffler 100 can also be provided with a sleeve, including a first sleeve 40 and a second sleeve 50, the first sleeve 40 is arranged on the first cylinder 10 relatively far away from the second cylinder 20 At one end, the second sleeve 50 is arranged at the end of the second cylinder 20 relatively far away from the first cylinder 10.
  • the filter muffler 100 installed with the first and second sleeves is used as an independent component and is welded to the external copper pipe to adapt to the actual use occasions.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Exhaust Silencers (AREA)
  • Duct Arrangements (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

一种过滤消音器(100)，包括第一筒体(10)、第二筒体(20)及安装于第一筒体(10)与第二筒体(20)之间的过滤网(30)，过滤网(30)包括网体(31)以及连接于网体(31)的预制外翻边(32)，预制外翻边(32)自网体(31)的端部向外延伸形成，预制外翻边(32)的翻边角度大于90°，过滤网(30)通过预制外翻边(32)套设第二筒体(20)的端部，第一筒体(10)套设过滤网(30)。

Description

过滤消音器及空调设备
相关申请
本申请要求2020年1月9日申请的，申请号为202020038691.5，发明名称为“过滤消音器及空调设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及空气调节控制技术领域，尤其涉及一种过滤消音器及空调设备。
背景技术
过滤消音器是一种用于降低气流噪音、过滤流体杂质的管道状器件，其在空气调节领域内应用广泛，其工作原理是利用吸声装置、弯头、突然改变管道截面积或者其结合，使管道内噪声衰减或被反射。目前使用的一种过滤消音器由两个相对套装且具有变化截面直径的筒体和位于变径筒体中间的过滤网固定安装组成，过滤网的固定部分被夹持在两个套装的变径筒体壁之间。但是在传统过滤消音器的安装过程中，过滤网固定夹持部分受到筒体压力以及形变会产生应力回弹现象，使得筒体难以或无法压入，进而影响过滤消音器的装配稳定性，而固定夹持部分的大幅变形还会产生破坏过滤网的隐患，难以保证过滤消音器的产品品质。
发明内容
根据本申请的各种实施例，提供一种过滤消音器，包括第一筒体、第二 筒体以及安装于第一筒体与第二筒体之间的过滤网，过滤网包括网体以及连接于网体的预制外翻边，预制外翻边自网体的端部向外延伸形成，预制外翻边的翻边角度大于90°，过滤网通过预制外翻边套设第二筒体的端部，第一筒体套设过滤网。
进一步地，预制外翻边的翻边角度大于150°。
进一步地，预制外翻边与网体平行设置，预制外翻边与网体之间形成环状间隙，第二筒体插入并固定在环状间隙中。
进一步地，预制外翻边为环状；或者，预制外翻边包括多个相互间隔的翻边部，多个相互间隔的翻边部环绕所述网体中心线设置。
进一步地，第一筒体包括固定部，固定部用于供第二筒体伸入并固定第二筒体，预制外翻边的末端与固定部端部相平齐。
进一步地，第一筒体包括降噪部、固定部以及连接降噪部及固定部的台阶段，固定部的内径大于降噪部的内径，台阶段用于限制第二筒体伸入第一筒体的深度；台阶段沿轴向剖切的形状为圆弧或直线段。
进一步地，预制外翻边与第一筒体焊接固定，且预制外翻边与第二筒体焊接固定。
进一步地，过滤消音器还包括第一套管及第二套管，第一套管设置在第一筒体相对远离第二筒体一侧，第二套管设置在第二筒体相对远离第一筒体一侧。
本申请还提供了一种空调设备，采用上述技术方案中任意一项中的过滤消音器。
采用上述技术方案后，本申请相比传统技术具有如下进步：过滤网设有翻边角度大于90°的预制外翻边，使得预制外翻边与网体间夹角小于90°，这 意味着其横截面直径沿第一筒体压入方向是逐步增大的，能够在第一筒体压入时提供导向作用，避免过滤网外翻边因受到第一筒体挤压产生形变出现应力回弹现象，解决了筒体难以压入的问题；另外，在安装过滤网后，预制外翻边的材料扭曲弯折幅度也有降低。
附图说明
为了更好地描述和说明这里公开的那些发明的实施例和/或示例，可以参考一幅或多幅附图。用于描述附图的附加细节或示例不应当被认为是对所公开的发明、目前描述的实施例和/或示例以及目前理解的这些发明的最佳模式中的任何一者的范围的限制。
图1为本申请一实施方式的过滤消音器的结构示意图。
图2为本申请一实施方式中过滤消音器拆分后的结构示意图。
图3为本申请一过滤网的实施方式的示意图。
图4为本申请的过滤网的一实施例的结构示意图。
图5为本申请的过滤网的另一实施例的示意图。
图6为图1所示的过滤消音器中A处的放大示意图。
图7为图2所示的过滤消音器中B处的放大示意图。
图8为图2所示的过滤消音器中B处在另一实施例中的结构示意图。
主要元件符号说明
过滤消音器 100
第一筒体 10
第一筒体内腔 11
固定部 12
降噪部 13
台阶段 14
第二筒体 20
第二筒体内腔 21
过滤网 30
网体 31
预制外翻边 32
环形空槽 33
环形间隙 331
第一套管 40
第二套管 50
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明的是，当组件被称为“装设于”另一个组件，它可以直接装设在另一个组件上或者也可以存在居中的组件。当一个组件被认为是“设置于”另一个组件，它可以是直接设置在另一个组件上或者可能同时存在居中组件。当一个组件被认为是“固定于”另一个组件，它可以是直接固定在另一个组件上或者可能同时存在居中组件。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。本文所使用的 术语“或/及”包括一个或多个相关的所列项目的任意的和所有的组合。
请参阅图1，图1为本申请一实施方式中的过滤消音器100的结构示意图。过滤消音器100用于降低气流噪音，在本实施方式中，过滤消音器100用于降低空调设备的噪音。可以理解，在其他实施方式中，过滤消音器100还可以用于鼓风机、风冷设备等其他类型的空气调节控制的使用场合。
过滤消音器100包括第一筒体10、第二筒体20以及安装在第一筒体10与第二筒体20之间的过滤网30。第一筒体10及第二筒体20为具有变化直径的管道并且相对安装，两个筒体以及过滤网间均采用固定连接。噪声在经过第一筒体10及/或第二筒体20管道内时，遇到其中面积突变的横截面后得以衰减或被反射，此外过滤网30也起到了吸声衬里的作用，吸收部分噪声。
第二筒体20作为过滤网30的安装基础。过滤网网体31进入第二筒体内腔21，第二筒体20端部抵靠在过滤网固定夹持段处，第二筒体的内腔21容置过滤网网体31。在本实施方式中，第二筒体20为具有不同横截面面积的中空圆筒状。可以理解的是，在其他实施方式中，第二筒体20也可以是方筒状或带有弯头的长管道状，只要其内部设有面积突变的横截面，能够实现内部声波阻抗不连续即可。
过滤网30作为过滤消音器100内部的吸音装置、过滤装置，起到了吸声衬里、过滤流体杂质的作用。过滤网30包括网体31以及从网体末端延伸并且弯折一定角度后形成的固定夹持段，网体31为具有一端沿轴向突出且突出端闭合的回转体结构，其另一端开口，网体31与固定夹持段一体成型。网体31被容置于第二筒体的内腔21中，固定夹持段上靠近网体轴向突出侧的端面抵靠在第二筒体20的末端，因而第二筒体20与过滤网30安装为一个整体，插入第一筒体的内腔11中。在第一筒体10的挤压下，固定夹持段发生形变，被固定在 第一筒体10管壁与第二筒体20与之相对的管壁之间。在本实施方式中，网体31为柱筒状，可以理解的是，在其他实施方式中，网体还可以是圆锥状或者半球面状，只要有过滤吸声效果且一端具有闭合面的构造即可。
第一筒体10用于套设第二筒体20与过滤网30。装配过程：过滤网30通过固定夹持段套设在第二筒体20，第一筒体10压向第二筒体20与过滤网30形成的整体，在第一筒体10的挤压下，固定夹持段发生形变。第一筒体10管壁、受压变形的固定夹持段以及第二筒体20管壁间形成径向紧配合。可以理解，第一筒体10的压入端的管道内径大于第二筒体20可伸入第一筒体腔内11的管道外径，且第一筒体10压入端的管道内径大于其压入后发生形变的固定夹持段的横截面直径。在本实施方式中，第一筒体10是与第二筒体20形状几乎相同的、具有多截面直径的管道，可以理解的是，在其他实施方式中，第一筒体也可以是方筒状、带有弯头的长管道形状，只要其内部设有面积突变的横截面，能够实现内部声波阻抗不连续即可而不仅限于圆管状。
但是，过滤网固定夹持段相对于网体开口方向的翻折角度较小，因而固定夹持段与网体间的夹角，也就是上述翻折角度的补角较大。在第一筒体向固定夹持段挤压时，固定夹持段受压发生大幅度形变，产生回弹应力，使得安装作业操作者不能快捷、便利、省力地将第一筒体压向过滤网与第二筒体形成的整体并套设过滤网；此外，固定夹持段在第一筒体压入并套装前后的形变程度大，材料扭曲弯折幅度剧烈，装配过程中可能导致过滤网固定夹持部甚至网体被损坏，难以保证过滤消音器装配后的产品品质。
为克服上述技术缺陷，在本实施方式中，采用一种设置有与网体31连接的预制外翻边32的过滤网。参阅图2至图3，图2为本申请一实施方式中过滤消音器100拆分后的结构示意图，图3为本申请一过滤网的实施方式的示意图。 预制外翻边32由网体31端部向外延伸并与网体31一体形成。预制外翻边32的翻边角度大于90°，翻边后，预制外翻边32与网体31之间的夹角小于90°。
翻边角度大于90°的含义是：将要被翻边的网体31端部部分从图3所示的过滤网开口左侧起，沿顺时针方向以大于90°的翻转角β进行翻边后，到达过滤网开口右侧，此时β角即为翻边角度。外翻边32与网体31的夹角α小于90°。如图2所示，α的两边分别为预制外翻边32与网体31的侧壁，角即为翻边起始处，夹角α与翻边角度β互为补角。
预制外翻边32的作用与固定夹持段相同，同样固定在第一筒体10管壁与第二筒体20与之相对的管壁之间以形成径向紧配合。安装过滤消音器100的过程为：第二筒体20首先伸入夹角α所代表的环状空槽33，过滤网30通过预制外翻边32套设于第二筒体20。然后第二筒体20与过滤网30作为整体插入第一筒体腔体11内，第一筒体10套设过滤网30。在压入第一筒体10的过程中，预制外翻边32与网体31间小于90°的夹角α减小了外翻边32材料弯折形变产生的回弹应力，解决了第一筒体10无法压入的问题；此外，由于预制外翻边32以及小于90°的夹角α的设置，在第一筒体10压入过滤网30的方向上，过滤网30的横截面面积并非突然增大，而是逐渐增大，即预制外翻边32可以在压入第一筒体10过程中为第一筒体10提供导向作用，便于第一筒体10压入。
请一并参阅图4，图4为本申请的过滤网一实施例的结构示意图。预制外翻边的翻边角度β大于150°，预制外翻边32与网体31间夹角α小于30°。夹角α越小，预制外翻边32被第一筒体10挤压并套设时的回弹应力也就越小，外翻边处的材料扭曲弯折幅度随之越小，预制外翻边32的导向作用也越显著，如此设置能更容易地压装第一筒体10。
请一并参阅图5，图5为本申请过滤网的另一实施例的结构示意图。预制 外翻边32与网体31平行设置，且预制外翻边32与所述网体31之间形成一个环状间隙331，第二筒体20能够插入该环状间隙331中。在本实施方式中，预制外翻边32受第一筒体10挤压的扭曲弯折的程度最小，且几乎没有回弹应力，如此设置能显著降低第一筒体10压装的难度。
预制外翻边32的形状不仅局限于附图说明中限定的环形，也可以根据过滤网的加工方式来确定，例如选用多个相互隔离并环绕网体中心线设置的翻边部结构，这种结构能在加工过滤网的过程中更容易地实施翻边工序，进一步减小翻边部位置的材料变形幅度，从而减轻对过滤网表面的破坏，保证过滤网产品加工质量，提高过滤网良品率。
请一并参阅图6，图6为图1所示的过滤消音器中A处的放大示意图。第一筒体10的末端设置有固定部12，固定部的内径大于第二筒体20上与第一筒体10相对末端的外径，用于供第二筒体20伸入第一筒体的腔体11内并固定第二筒体20。安装后预制外翻边32的末端与第一筒体固定部12相平齐，如此设置能保证焊接零件时预制外翻边32与第一筒体固定部12充分融化，固定为一体并紧密连接。
请一并参阅图7至图8。图7为图2所示过滤消音器中B处的放大示意图，图8为图2所示过滤消音器中B处在另一实施例中的结构示意图。第一筒体10设置成具有不同内壁直径的结构，包括降噪部13、固定部12以及位于降噪部与固定部之间的台阶段14。固定部12的内壁直径大于第二筒体20与其相对一侧的外壁直径，即第二筒体20可以在固定部12内自由插拔，第二筒体20伸入第一筒体腔体11内一侧的端部抵靠在台阶段14，台阶段14用于限制第二筒体40伸入第一筒体20的深度。
台阶段14的内壁面沿轴向的剖面形状为圆弧或直线段。圆弧形的剖面形 状可以使台阶段14与预制外翻边32的翻边起始处形成面接触，相比线接触具有更大接触面积，以获得更牢靠的定位；直线段形状的剖面则是通过传统的孔加工手段获得的，如使用钻头钻孔便可以获得直线段形状的台阶段剖切面。可以理解，在其他实施方式中，根据不同的筒体加工工艺，台阶段14的剖切面形状还可以为其他形状，如阶梯形或者具有内表面凸起的台阶段，只要能够限制第二筒体20伸入第一筒体10内的深度即可，而不限于图6、图7中所示的形状。
为进一步保证过滤消音器100的装配稳定性，对安装后的第一筒体10、第二筒体20以及过滤网30采用焊接方式固定。具体地，可以将预制外翻边32与第一筒体10在其配合处焊接固定，也可以将预制外翻边32与第二筒体20在其配合处焊接固定，或者，采用上述两种方案的结合，即第一筒体10、第二筒体20以及预制外翻边32均通过焊接固定为一体，以获得可靠固定连接。
优选地，安装后的过滤消音器100中还可以设置套管，包括第一套管40以及第二套管50，第一套管40设置在第一筒体10相对远离第二筒体20的一侧末端，第二套管50设置在第二筒体20相对远离第一筒体10的一侧末端。安装有第一、第二套管后的过滤消音器100作为一个独立组件，与外部铜管焊接，以适应其实际使用的场合。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
本技术领域的普通技术人员应当认识到，以上的实施方式仅是用来说明本申请，而并非用作为对本申请的限定，只要在本申请的实质精神范围内，对以上实施方式所作的适当改变和变化都落在本申请要求保护的范围内。

Claims (10)

  1. 一种过滤消音器，包括第一筒体、第二筒体以及安装于所述第一筒体与所述第二筒体之间的过滤网，其特征在于：所述过滤网包括网体以及连接于所述网体的预制外翻边，所述预制外翻边自所述网体的端部向外延伸形成，所述预制外翻边的翻边角度大于90°，所述过滤网通过所述预制外翻边套设所述第二筒体的端部，所述第一筒体套设所述过滤网。
  2. 根据权利要求1所述的过滤消音器，其特征在于：所述预制外翻边的翻边角度大于150°。
  3. 根据权利要求2所述的过滤消音器，其特征在于：所述预制外翻边与所述网体平行设置，所述预制外翻边与所述网体之间形成环状间隙，所述第二筒体插入并固定在所述环状间隙中。
  4. 根据权利要求1所述的过滤消音器，其特征在于：所述预制外翻边为环状。
  5. 根据权利要求1所述的过滤消音器，其特征在于：所述预制外翻边包括多个相互间隔的翻边部，所述多个相互间隔的翻边部环绕所述网体中心线设置。
  6. 根据权利要求1所述的过滤消音器，其特征在于：所述第一筒体包括固定部，所述固定部用于供所述第二筒体伸入并固定所述第二筒体，所述预制外翻边的末端与所述固定部端部相平齐。
  7. 根据权利要求1所述的过滤消音器，其特征在于：所述第一筒体包括降噪部、固定部以及连接所述降噪部及所述固定部的台阶段，所述固定部的内径大于所述降噪部的内径，所述台阶段用于限制所述第二筒体伸入所述第一筒体的深度；所述台阶段沿轴向剖切的形状为圆弧或直线段。
  8. 根据权利要求1所述的过滤消音器，其特征在于：所述预制外翻边与所述第一筒体焊接固定；且所述预制外翻边与所述第二筒体焊接固定。
  9. 根据权利要求1所述的过滤消音器，其特征在于：所述过滤消音器还包括第一套管及第二套管，所述第一套管设置在所述第一筒体相对远离所述第二筒体的一侧，所述第二套管设置在所述第二筒体相对远离所述第一筒体的一侧。
  10. 一种空调设备，包括过滤消音器，其特征在于：所述过滤消音器为权利要求1-9中任意一项所述的过滤消音器。
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