Fan

Abstract

The utility model belongs to the technical field of testing devices, and provides a fan which comprises a fan body, a shell and an air pipe. The shell is provided with a containing cavity and an air outlet communicated with the containing cavity, and the fan body is contained in the containing cavity. The air pipe is detachably connected with the shell, when the air pipe and the shell are in a connected state, an inner cavity of the air pipe is communicated with the containing cavity through the air outlet, and when the air pipe and the shell are in a detached state, the air pipe is separated from the air outlet, and the air pipe can be contained in the containing cavity. When the fan provided by the utility model is in the non-working state, the air pipe is separated from the air outlet, and the air pipe can be accommodated in the accommodating cavity, so that the size of the fan in the non-working state is reduced, and the fan occupies a small area of a test place in the non-working state.

Description

Technical Field

[0001] The present application relates to the technical field of testing devices, and in particular to a fan. Background Art

[0002] In the related art, when testing the performance of a vehicle, a fan is usually installed in front of the vehicle, and the airflow generated by the fan is used to simulate the headwind environment when the vehicle is driving on the road, so as to obtain more accurate vehicle performance data. However, the fan used to simulate the headwind environment is usually large in size and requires a large space. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide a fan to solve the technical problem in the related art that the fan is large in size and needs to occupy a large space.

[0004] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide a fan, the fan comprises a fan body, a shell and an air duct, wherein the shell has a accommodating cavity and an air outlet communicated with the accommodating cavity, and the fan body is accommodated in the accommodating cavity; the air duct is detachably connected to the shell, and when the air duct and the shell are in a connected state, the inner cavity of the air duct is communicated with the accommodating cavity through the air outlet, and when the air duct and the shell are in a disassembled state, the air duct is separated from the air outlet, and the air duct can be accommodated in the accommodating cavity.

[0005] In the technical solution of the embodiment of the present application, a housing is provided with a housing, which can accommodate the fan body and the air duct, and the air duct is detachably connected to one end of the housing with an air outlet. After adopting the above design, when the fan needs to enter the working state, the air duct can be connected to the end of the housing with an air outlet, so that the inner cavity of the air duct and the housing are interconnected and jointly form an air flow channel for the gas generated by the fan body to flow, thereby enabling the fan to provide a headwind. When the fan is in a non-working state, the air duct can be removed from the housing and accommodated in the housing, so that the volume and floor space of the fan in a non-working state are reduced, thereby reducing the area of ​​the test site occupied by the fan in a non-working state and improving the use efficiency of the test site.

[0006] In some embodiments, the air duct includes a plurality of pipe segments. In the connected state, the plurality of pipe segments are connected in sequence; in the disassembled state, at least one of the pipe segments is accommodated in another of the pipe segments.

[0007] In the technical solution of the embodiment of the present application, such a design is equivalent to utilizing the internal space of the larger pipe segment to accommodate other smaller pipe segments, thereby reducing the volume of the air duct in a disassembled state, that is, a non-working state, so that the size of the accommodating cavity for accommodating the air duct can be designed to be smaller, thereby further reducing the volume and floor space of the fan when it is in a non-working state.

[0008] In some embodiments, in the connected state, at least two adjacent pipe segments are detachably connected.

[0009] In the technical solution of the embodiment of the present application, since at least two adjacent pipe sections are detachably connected, the air duct can be disassembled into at least two disassembled parts. In this way, the dimensions of each disassembled part can be designed so that a pipe section on at least one disassembled part can be accommodated in a pipe section on another disassembled part, thereby enabling the air duct to utilize a large-sized pipe section to accommodate a small-sized pipe section when not in operation, thereby achieving the effect of further reducing the volume and floor space occupied by the fan when it is not in operation.

[0010] In some embodiments, at least two of the pipe segments are axially movably connected to each other, and the pipe segment with a larger cross-sectional size extends inward to form a first stop ring, and the pipe segment with a smaller cross-sectional size extends outward to form a second stop ring that can cooperate with the first stop ring.

[0011] In the technical solution of the embodiment of the present application, when the fan is working, the two pipe sections that are axially movably connected to each other can be in an extended state, so that a longer channel can be formed inside the air duct, which can allow the airflow of the fan body to pass through, and when the two pipe sections that are axially movably connected to each other are in an extended state, the first stop ring and the second stop ring will abut against each other, which can prevent the pipe section with a small cross section from separating from the pipe section with a larger cross section, so that the air duct as a whole is in a relatively stable extended state. When the fan is not working, the two pipe sections that are axially movably connected to each other can be in a retracted state, so that the air duct as a whole is in a retracted state, so that the volume of the accommodating cavity can be designed to be smaller, and the size of the shell can also be designed to be smaller, which can further reduce the volume of the fan when it is not working, reduce the area occupied by the fan, and save space.

[0012] In some embodiments, the fan further includes an annular seal disposed between the first stop ring and the second stop ring.

[0013] In the technical solution of the embodiment of the present application, when the air duct is in an extended state, the annular seal can seal the gap between adjacent pipe sections to avoid air leakage and improve the efficiency of the fan.

[0014] In some embodiments, the fan also includes an annular sealing connector, and a first annular plug-in groove and a second annular plug-in groove are respectively provided on both sides of the axial direction of the sealing connector. In the connected state, the sealing connector is provided between at least two adjacent pipe sections, and the first annular plug-in groove and the second annular plug-in groove are respectively plug-fitted with the two adjacent pipe sections.

[0015] In the technical solution of the embodiment of the present application, due to the design of the first annular plug-in groove and the second annular plug-in groove, the two pipe sections can be easily inserted into the corresponding plug-in grooves, so that the two adjacent pipe sections can be quickly connected, which can improve the efficiency of disassembly and maintenance of the air duct; and, since the sealing connector is usually a structural member with a certain elasticity, after the end of the pipe section is plugged into the corresponding plug-in groove, it can squeeze the groove wall of the plug-in groove, so that the end of the pipe section and the groove wall of the corresponding plug-in groove can fit tightly, thereby effectively sealing the connection between the two pipe sections, avoiding air leakage, and improving the efficiency of the fan.

[0016] In some embodiments, the fan also includes an annular sealing connector, and a first annular plug-in groove and a second annular plug-in groove are respectively provided on both sides of the axial direction of the sealing connector. In the connected state, the sealing connector is provided between the air duct and the shell, and the first annular plug-in groove is plug-fitted with one end of the air duct, and the second annular plug-in groove is plug-fitted with one end of the shell.

[0017] In the technical solution of the embodiment of the present application, the design of the first annular plug-in groove and the second annular plug-in groove enables the ends of the air duct and the shell to be easily inserted into the corresponding plug-in grooves, so that the air duct and the shell can be quickly connected, thereby improving the convenience of installation and maintenance of the air duct, and because the sealing connector is a structural member with a certain elasticity, the ends of the air duct and the shell can squeeze the groove wall of the plug-in groove after being plugged into the corresponding plug-in groove, so that the ends of the air duct and the shell can fit tightly with the groove wall of the corresponding plug-in groove, thereby effectively sealing the connection between the air duct and the shell, avoiding air leakage, and improving the efficiency of the fan.

[0018] In some embodiments, the inner side wall of the sealing connector is streamlined along the axial direction of the sealing connector. Such a design reduces the friction between the airflow and the inner side wall of the sealing connector, allowing the airflow to flow more smoothly.

[0019] In some embodiments, the inner side wall of the sealing connector includes a plurality of annular surfaces connected at an angle in sequence along the axial direction of the sealing connector, and the angle between each two adjacent annular surfaces is an obtuse angle. Such a design can reduce the friction between the airflow and the inner side wall of the sealing connector, allowing the airflow to flow more smoothly, and, compared to setting the inner side wall of the sealing connector to be streamlined, in the technical solution of the embodiment of the present application, the inner side wall of the sealing connector is set to include a plurality of annular surfaces, and the processing technology is simpler, which is conducive to reducing the cost of the sealing connector.

[0020] In some embodiments, the fan further comprises a fastener, and the fastener is interference-fitted on the outside of the sealing connector. When the sealing connector is arranged between two adjacent pipe sections, the fastener can simultaneously press the sealing connector against the outer side walls of the two adjacent pipe sections, so that the sealing connector can more effectively seal the gap between the two adjacent pipe sections, and can also enhance the connection strength between the two adjacent pipe sections; when the sealing connector is arranged between the air duct and the shell, the fastener can simultaneously press the sealing connector against the outer side walls of the air duct and the shell, so that the sealing connector can more effectively seal the gap between the shell and the air duct, and can also enhance the connection strength between the shell and the air duct.

[0021] In some embodiments, the fan further includes a plurality of first support members, each of the first support members being used to support an end of the corresponding pipe segment away from the housing.

[0022] In the technical solution of the embodiment of the present application, when the fan is in working state, at least two first support members can stably support the air duct as a whole on the external support surface, reducing vibration and movement caused by the operation of the fan, and each first support member supports a pipe segment respectively, which is conducive to more evenly dispersing the weight of the air duct itself and the load generated when the fan is running, reducing damage or deformation caused by stress concentration, and improving the structural stability of the fan. When the fan is not in working state, each first support member can provide support for the corresponding pipe segment in the disassembled state, preventing each pipe segment from falling out of the accommodating cavity, so that each pipe segment is stably accommodated in the accommodating cavity.

[0023] In some embodiments, the fan further includes a plurality of second support members, and in the disassembled state, each of the second support members is used to support an end of the corresponding pipe segment close to the casing.

[0024] In the technical solution of the embodiment of the present application, when the fan is in a non-working state, each second support member can support the end of the corresponding pipe segment close to the shell, so that the two ends of each pipe segment are respectively supported by the first support member and the second support member, which can make each pipe segment more stably accommodated in the accommodating cavity, and can make each pipe segment in a better stress state when in the storage state, and can also make a gap between two adjacent pipe segments to avoid collision or friction between the two adjacent pipe segments.

[0025] In some embodiments, the fan further comprises a third support member, and the third support member is used to support the housing. When the fan is in a working state or a non-working state, the third support member can stably support the housing as a whole on the external support surface, thereby reducing vibration and movement caused by the operation of the fan.

[0026] In some embodiments, the accommodating chamber includes a first accommodating chamber and a second accommodating chamber that are interconnected, the first accommodating chamber is used to accommodate the fan body, the second accommodating chamber is located on the air outlet side of the first accommodating chamber and is interconnected with the air outlet, and is used to accommodate the air duct in the disassembled state.

[0027] In the technical solution of the embodiment of the present application, when the fan is in a working state, the second accommodating chamber serves as a part of the air flow channel, and when the fan is in a non-working state, the second accommodating chamber serves as a storage space for accommodating the air duct. There is no need to set up additional storage space for the air duct, and the space of the shell can be fully utilized, so that the volume footprint of the fan in both the working state and the non-working state is smaller.

[0028] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0030] Figure 1 This is a schematic diagram of the main structure of a fan in which a housing and an air duct are connected in some embodiments of the present application;

[0031] Figure 2 This is a schematic diagram of the front view of the fan with the housing and the air duct in some embodiments of the present application in a disassembled state;

[0032] Figure 3 It is a left-side structural schematic diagram of a fan in which a housing and an air duct are connected in some embodiments of the present application;

[0033] Figure 4 It is a schematic diagram of a partial cross-sectional structure of two pipe sections of a fan in some embodiments of the present application that are axially movably sleeved with each other and are in an extended state;

[0034] Figure 5 It is a schematic diagram of a partial cross-sectional structure of two pipe sections of a fan in some embodiments of the present application that are axially movably sleeved with each other and are in a contracted state;

[0035] Figure 6 It is a schematic diagram of a partial cross-sectional structure of two adjacent pipe sections of a fan and a sealing connector and a fastener in an assembled state in some embodiments of the present application;

[0036] Figure 7 It is a schematic diagram of a partial cross-sectional structure of two adjacent pipe sections of a fan and another sealing connector in an assembled state in some embodiments of the present application;

[0037] Figure 8 This is a schematic diagram of the partial cross-sectional structure of the fan housing, air duct, sealing connector and fasteners in some embodiments of the present application in an assembled state.

[0038] Among them, the reference numerals in the figure are:

[0039] 100-housing; 101-accommodating chamber; 1011-first accommodating chamber; 1012-second accommodating chamber; 102-air outlet; 1001-first cylindrical body; 1002-first conical cylindrical body; 200-air duct; 201-second cylindrical body; 202-second conical cylindrical body; 210-pipe section; 220-first stop ring; 230-second stop ring; 300-fan body; 410-first support member; 411-first support rod; 4111-first rod body; 4112- First mounting plate; 420-second supporting member; 430-third supporting member; 431-second support rod; 4311-second rod body; 4312-second mounting plate; 510-sealing connector; 5101-first annular plug groove; 5102-second annular plug groove; 5103-annular surface; 511-outer sealing ring; 512-inner sealing ring; 513-connecting ring; 514-third conical cylinder; 515-fourth conical cylinder; 520-fastener; 600-annular sealing member. DETAILED DESCRIPTION

[0040] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0042] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0043] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0044] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0045] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0046] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0047] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0048] At present, when testing the performance of a vehicle in some environments, for example, when simulating a vehicle driving on the road on an indoor chassis dynamometer, the wheels of the vehicle rotate, but the vehicle does not move, so there is a lack of a windward environment. The lack of a headwind environment can easily lead to problems such as a relatively insufficient cooling speed of the vehicle engine cooling system, which will affect the accuracy of the test results. In order to make the test environment closer to the actual road driving conditions, it is necessary to arrange a fan in front of the vehicle to simulate the headwind environment. However, in the related art, the fan used to simulate the headwind environment is usually large in size and requires a large space, which will result in a larger area of ​​the test site.

[0049] In order to solve the above problems, the present application provides a fan. The fan provided in the embodiment of the present application can provide headwind, which can be applied in various fields such as automobiles and aviation. For example, in the development process of the aircraft, the fan can be used to simulate the headwind of the aircraft to optimize the design parameters of the aircraft, reduce the wind resistance of the aircraft and improve the fuel efficiency of the aircraft. In the process of testing the performance of the drone, the fan can be used to simulate the headwind of the drone, and then verify the performance of the drone at different wind speeds. When testing the performance of the vehicle, the fan can be used to simulate the headwind of the vehicle, so that the test environment of the vehicle is closer to the actual driving environment of the vehicle, which can improve the accuracy of the test results. The fan provided in the embodiment of the present application can also provide a headwind environment for personnel who need to improve the ability to resist wind resistance. The fan provided in the embodiment of the present application has a small volume in the non-working state and occupies a small area of ​​the test site, which can improve the use efficiency of the test site. The fan provided in the embodiment of the present application is described below.

[0050] See also Figure 1 The fan provided in the embodiment of the present application includes a housing 100, a duct 200 and a fan body 300. Figure 2 The housing 100 has a receiving chamber 101 and an air outlet 102, and the air outlet 102 is connected to the receiving chamber 101. The fan body 300 is received in the receiving chamber 101. The air duct 200 is detachably connected to the housing 100, see Figure 1When the air duct 200 and the housing 100 are in a connected state, the inner cavity of the air duct 200 is connected to the accommodating cavity 101 through the air outlet 102. Figure 2 When the air duct 200 and the housing 100 are in a disassembled state, the air duct 200 is separated from the air outlet 102 , and the air duct 200 can be accommodated in the accommodating cavity 101 .

[0051] In the embodiment of the present application, the housing 100 may be configured in the shape of a cylinder, a conical cylinder, an elliptical cylinder, a prismatic cylinder, a pyramid cylinder, etc., and the shape of the housing 100 may be limited as required. Figure 2 The housing 100 is provided with a first cylindrical body 1001 and a first conical cylindrical body 1002 connected to each other, the maximum diameter of the first conical cylindrical body 1002 is equal to the diameter of the first cylindrical body 1001, and the end of the first conical cylindrical body 1002 away from the first cylindrical body 1001 forms an air outlet 102 and is used to connect with the air duct 200. In some cases, it is necessary to set the air duct 200 into a conical cylinder with a gradually decreasing diameter to increase the flow velocity of the airflow discharged from the fan body 300 in the flow direction. Therefore, when the housing 100 is designed to include the first cylindrical body 1001 and the first conical cylindrical body 1002, and the first conical cylindrical body 1002 is connected to the air duct 200 with a certain taper, it is convenient to form a flatter connection surface at the connection between the housing 100 and the air duct 200, thereby making the connection structure between the housing 100 and the air duct 200 simpler, and also making it easier to achieve sealing at the connection between the housing 100 and the air duct 200.

[0052] In the embodiment of the present application, after one end of the air duct 200 and one end of the shell 100 where the air outlet 102 is provided are connected to each other, the inner cavity of the air duct 200 and the accommodating cavity 101 are connected to each other, and the air flow pressurized by the fan body 300 will flow through the accommodating cavity 101 and the inner cavity of the air duct 200 in sequence, and finally flow out of the inner cavity of the air duct 200 from the end of the air duct 200 away from the shell 100.

[0053] The air duct 200 may be configured in the shape of a cylinder, a conical cylinder, an elliptical cylinder, a prism cylinder, a pyramid cylinder, etc., and the present embodiment does not limit the shape of the air duct 200. For example, see Figure 1The air duct 200 includes a second cylindrical body 201 and a second conical cylindrical body 202 connected to each other, the minimum diameter of the second conical cylindrical body 202 is equal to the diameter of the second cylindrical body 201, and the end of the second conical cylindrical body 202 away from the second cylindrical body 201 is detachably connected to the shell 100. In the above manner, the end of the air duct 200 close to the shell 100 is set as the second conical cylindrical body 202, so that the flow rate of the air flow in the air duct 200 can be gradually increased along the air flow direction, thereby meeting the use requirements in some cases, and the end of the air duct 200 away from the shell 100 is set as the second cylindrical body 201, which can guide the airflow and make the airflow flow out of the air duct 200 more smoothly. In addition, since the inner wall surface of the second cylindrical body 201 is a cylindrical surface, compared with the case where the inner wall surface is a conical surface, it is easier to install structures such as filters or safety protection nets on the cylindrical inner wall surface.

[0054] The air duct 200 can be set to a structure whose size cannot be changed, for example, the air duct 200 can be set to an integrally formed structure. The air duct 200 can also be set to a structure whose size can be changed, for example, the air duct 200 can be designed as a structure that is retractable along the air flow direction. When the size of the air duct 200 can be changed, when the air duct 200 and the housing 100 are in a connected state, the air duct 200 can be in a larger size state to form an air flow channel; and when the air duct 200 and the housing 100 are in a disassembled state, the air duct 200 can be in a smaller size state, which is conducive to further reducing the volume footprint of the fan when it is not in operation, thereby reducing the occupation of the test site area.

[0055] Furthermore, the air duct 200 can be detachably connected to the shell 100 by means of flange connection, snap connection, quick connector connection, etc., and a suitable detachable connection method can be selected according to factors such as the shape, size, and material of the shell 100 and the air duct 200.

[0056] In the technical solution of the embodiment of the present application, a housing 100 is provided with a housing 101, which can accommodate a fan body 300 and an air duct 200, and the air duct 200 is detachably connected to one end of the housing 100 provided with an air outlet 102. After adopting the above design, when the fan needs to enter a working state, the air duct 200 can be connected to the end of the housing 100 provided with an air outlet 102, so that the inner cavity of the air duct 200 and the housing 101 are interconnected and jointly form an air flow channel for the gas generated by the fan body 300 to flow, thereby enabling the fan to realize the function of providing a headwind. When the fan is in a non-working state, the air duct 200 can be removed from the housing 100, and the air duct 200 can be accommodated in the housing 101, so that the volume and floor space of the fan in a non-working state are reduced, thereby reducing the area of ​​the test site occupied by the fan in a non-working state, and improving the use efficiency of the test site.

[0057] See also Figure 1 and Figure 2 In some embodiments, the air duct 200 includes a plurality of pipe segments 210 . When in a connected state, the plurality of pipe segments 210 are connected in sequence. When in a disassembled state, at least one pipe segment 210 is accommodated in another pipe segment 210 .

[0058] Understandable, see Figure 1 and Figure 2 When the air duct 200 and the shell 100 are in a connected state, the inner cavities of the multiple pipe segments 210 are connected in sequence, and the inner cavities of the pipe segments 210 located at one end of the air duct 200 are connected to each other through the air outlet 102 and the accommodating cavity 101 of the shell 100, that is, the inner cavities of the multiple pipe segments 210 and the accommodating cavity 101 of the shell 100 together form an air flow channel for gas circulation.

[0059] When the air duct 200 and the shell 100 are in a connected state, adjacent pipe sections 210 can be connected in sequence through one or more connection methods such as flange connection, snap connection, quick connector connection, and socket connection with a limiting structure, and can be set as needed.

[0060] When the air duct 200 and the housing 100 are in a disassembled state, under the premise that at least one pipe segment 210 is accommodated in another pipe segment 210, the multiple pipe segments 210 can be accommodated in the accommodating cavity 101 of the housing 100 in different forms. For example, among the multiple pipe segments 210, some of the pipe segments 210 can be accommodated in the inner cavity of one pipe segment 210, and the remaining other pipe segments 210 are individually accommodated in the accommodating cavity 101 of the housing 100. For example, among the multiple pipe segments 210, one pipe segment 210 can accommodate all the other pipe segments 210, that is, the multiple pipe segments 210 are sequentially sleeved from the inside to the outside. For another example, among the multiple pipe segments 210, some of the pipe segments 210 can be accommodated in the inner cavity of one pipe segment 210, some of the pipe segments 210 can be accommodated in the inner cavity of another pipe segment 210, and the remaining other pipe segments 210 are individually accommodated in the accommodating cavity 101 of the housing 100. Of course, the multiple pipe segments 210 can also be accommodated in the accommodating cavity 101 of the shell 100 in other forms and can be arranged as needed.

[0061] It should be noted that, since in the connected state, the multiple pipe segments 210 are shown to be connected in sequence, and in the disassembled state, the multiple pipe segments 210 are shown to be in a state where at least one pipe segment 210 is accommodated in another pipe segment 210, when the fan is switched between the connected state and the disassembled state, it is necessary not only to disassemble and assemble the air duct 200 from the shell 100, but also to adjust the connection state and / or relative position between the pipe segments 210 according to the connection method between the pipe segments 210 of the air duct 200.

[0062] For example, see Figure 4 and Figure 5 , the air duct 200 includes two pipe sections 210, and when the two pipe sections 210 are axially movably connected to each other, in the connected state, the two pipe sections 210 are in an extended state, and one of the pipe sections 210 with a larger cross-sectional size is detachably connected to the housing 100. Then, when switching from the connected state to the disassembled state, it is necessary to separate the pipe section 210 with a larger cross-sectional size from the air outlet 102 of the housing 100, and it is also necessary to shrink the pipe section 210 with a smaller cross-sectional size to the inside of the pipe section 210 with a larger cross-sectional size, and finally, the two pipe sections 210 are accommodated together in the accommodating cavity 101 of the housing 100. When switching from the disassembled state to the connected state, it is necessary to install the pipe section 210 with a larger cross-sectional size on the housing 100, and it is necessary to extend the pipe section 210 with a smaller cross-sectional size from the pipe section 210 with a larger cross-sectional size. That is, for the air duct 200 having the above structure, the air duct 200 needs to be disassembled from the shell 100, and the relative positions of the two pipe sections 210 of the air duct 200 need to be changed to switch the air duct 200 between the connected state and the disassembled state.

[0063] When a plurality of pipe segments 210 are connected in sequence by other means, the connection relationship and / or relative position of the pipe segments 210 may be adjusted accordingly to switch the air duct 200 between the disassembled state and the connected state.

[0064] In the technical solution of the embodiment of the present application, the air duct 200 includes multiple pipe segments 210, and when the fan is in a disassembled state, at least one pipe segment 210 is accommodated in another pipe segment 210. This design is equivalent to using the internal space of the larger pipe segment 210 to accommodate other smaller pipe segments 210, thereby reducing the volume of the air duct 200 in a disassembled state, that is, in a non-working state, so that the size of the accommodating cavity 101 for accommodating the air duct 200 can be designed to be smaller, thereby further reducing the volume and floor space of the fan when it is in a non-working state.

[0065] See also Figure 2 In some embodiments, in the connected state, at least two adjacent pipe segments 210 are detachably connected.

[0066] It can be understood that in some implementations of this embodiment, only some of the pipe sections 210 of the air duct 200 are detachably connected, and other parts of the pipe sections 210 are connected by other methods such as welding and bonding. In some other implementations of this embodiment, any two adjacent pipe sections 210 of the air duct 200 can be detachably connected, that is, all the pipe sections 210 are detachably connected in sequence.

[0067] In the technical solution of the embodiment of the present application, since at least two adjacent pipe segments 210 are detachably connected, the air duct 200 can be disassembled into at least two disassembled parts. In this way, the size of each disassembled part can be designed so that a pipe segment 210 on at least one disassembled part can be accommodated in a pipe segment 210 on another disassembled part, so that the air duct 200 can use the large-sized pipe segment 210 to accommodate the small-sized pipe segment 210 in the non-working state, so that the volume of the accommodating chamber 101 can be designed to be smaller, thereby achieving the effect of further reducing the volume and floor space of the fan when it is in the non-working state.

[0068] Exemplarily, in the connected state, any two adjacent pipe segments 210 of the air duct 200 can be detachably connected, that is, multiple pipe segments 210 can be detachably connected in sequence; and in the disassembled state, all the pipe segments 210 are sequentially socketed from the inside to the outside, that is, the inner cavity of one pipe segment 210 accommodates all other pipe segments 210, so that the volume of the air duct 200 in the non-working state is roughly equal to the volume of the pipe segment 210 with the largest cross-sectional dimension among the multiple pipe segments 210, so that the accommodating cavity 101 can be designed to be smaller, thereby greatly reducing the volume and floor space of the fan in the disassembled state.

[0069] See also Figure 4 and Figure 5 In some embodiments, at least two pipe segments 210 are axially movably connected to each other, and the pipe segment 210 with a larger cross-sectional size extends inward to form a first stop ring 220, and the pipe segment 210 with a smaller cross-sectional size extends outward to form a second stop ring 230 that can cooperate with the first stop ring 220.

[0070] It can be understood that for the two pipe sections 210 that are sleeved together, please refer to Figure 5 , the tube section 210 with a smaller cross-sectional dimension can be retracted into the inner cavity of the tube section 210 with a larger cross-sectional dimension, see Figure 4 , the pipe section 210 with a smaller cross-sectional dimension can also extend from the inner cavity of the pipe section 210 with a larger cross-sectional dimension.

[0071] In some implementations, some of the pipe segments 210 of the air duct 200 are axially movably nested with each other, and other parts of the pipe segments 210 are connected to each other by other means. In this case, when in the disassembled state, the pipe segment 210 with a smaller cross-sectional size among the two pipe segments 210 that are axially movably nested with each other is accommodated in the pipe segment 210 with a larger cross-sectional size. This can reduce the volume of the air duct 200 in the disassembled state, so that the size of the accommodating cavity 101 for accommodating the air duct 200 can be designed to be smaller, thereby further reducing the volume and floor space of the fan when it is not in operation.

[0072] In some implementations, any two adjacent pipe segments 210 of the air duct 200 are configured to be axially movably connected to each other, that is, all the pipe segments 210 are axially movably connected to each other in sequence. In this case, in the disassembled state, after the pipe segments 210 with smaller cross-sectional dimensions among any two adjacent pipe segments 210 are accommodated in the pipe segments 210 with larger cross-sectional dimensions, the multiple pipe segments 210 are in a state of being sequentially connected from the inside to the outside, that is, one pipe segment 210 accommodates all other pipe segments 210. Compared with the situation where some pipe segments 210 can be axially movably connected to each other, when all the pipe segments 210 are axially movably connected to each other in sequence, the volume of the air duct 200 in the disassembled state can be greatly reduced, so that the size of the accommodating cavity 101 for accommodating the air duct 200 can be designed to be smaller, thereby minimizing the volume and floor space of the fan when it is not working.

[0073] It should also be noted that, for the two mutually sleeved pipe sections 210, the pipe section 210 with a smaller cross-sectional dimension may be disposed close to the housing 100, or the pipe section 210 with a larger cross-sectional dimension may be disposed close to the housing 100. However, please refer to Figure 4 When the pipe section 210 with a larger cross-sectional size is arranged close to the shell 100, the airflow will apply thrust to the second stop ring 230, so that the second stop ring 230 and the first stop ring 220 remain in contact, which is more conducive to the multiple pipe sections 210 to stably maintain the extended state.

[0074] In the technical solution of the embodiment of the present application, when the fan is working, the two axially movably sleeved pipe sections 210 can be in an extended state, so that a longer channel can be formed inside the air duct 200, which can allow the airflow of the fan body 300 to pass through, and when the two axially movably sleeved pipe sections 210 are in an extended state, the first stop ring 220 and the second stop ring 230 will abut against each other, which can prevent the pipe section 210 with a small cross section from being separated from the pipe section 210 with a larger cross section, so that the air duct 200 as a whole is in a relatively stable extended state. When the fan is not working, the two axially movably sleeved pipe sections 210 can be in a retracted state, so that the air duct 200 as a whole is in a retracted state, so that the volume of the accommodating chamber 101 can be designed to be smaller, and the size of the housing 100 can also be designed to be smaller, which can further reduce the volume of the fan when it is not working, reduce the area occupied by the fan, and save space.

[0075] See also Figure 4 and Figure 5 In some embodiments, the fan further includes an annular seal 600 disposed between the first stop ring 220 and the second stop ring 230 .

[0076] It can be understood that in some implementations, the first stop ring 220 is provided with an annular seal 600 on one side facing the second stop ring 230. In some implementations, see Figure 5 An annular seal 600 is provided on the side of the second stop ring 230 facing the first stop ring 220. In other implementations, an annular seal 600 is provided on the side of the first stop ring 220 facing the second stop ring 230 and on the side of the second stop ring 230 facing the first stop ring 220.

[0077] The annular seal 600 may be made of silicone, rubber or polyester, and the shape of the annular seal 600 may be the same as the surface of the first stop ring 220 facing the second stop ring 230 or the surface of the second stop ring 230 facing the first stop ring 220 .

[0078] In the technical solution of the embodiment of the present application, when the air duct 200 is in an extended state, the annular seal 600 can seal the gap between adjacent pipe sections 210 to avoid air leakage and improve the efficiency of the fan.

[0079] See also Figure 6 In some embodiments, the fan further includes a sealing connector 510, which is annular, and has a first annular plug-in groove 5101 and a second annular plug-in groove 5102 on both sides of the axial direction thereof. In a connected state, a sealing connector 510 is provided between at least two adjacent pipe sections 210, and the first annular plug-in groove 5101 and the second annular plug-in groove 5102 are respectively plugged in with the two adjacent pipe sections 210.

[0080] Specifically, the sealing connector 510 can be made of polyester, hard rubber, etc. Figure 6 The sealing connector 510 includes an outer sealing ring 511, an inner sealing ring 512 and a connecting ring 513 connected between the outer sealing ring 511 and the inner sealing ring 512. The cross-section of the sealing connector 510 formed by the outer sealing ring 511, the inner sealing ring 512 and the connecting ring 513 is roughly I-shaped. A first annular plug-in groove 5101 is formed between the same side of the outer sealing ring 511 and the inner sealing ring 512 and the connecting ring 513, and a second annular plug-in groove 5102 is formed between the other side of the outer sealing ring 511 and the inner sealing ring 512 and the connecting ring 513.

[0081] The sealing connector 510 can be set to a cylindrical shape, or a conical cylinder with a certain taper. For example, when the sealing connector 510 is used to connect two cylinders with the same diameter, the shape of the sealing connector 510 can be set to a cylindrical shape accordingly. For another example, when the sealing connector 510 is used to connect two conical cylinders with different diameters, the shape of the sealing connector 510 can be set to a conical cylinder accordingly, and, please refer to Figure 6 When the diameters of the ends of the two pipe sections 210 connected by the sealing connector 510 are close or the same, the sealing connector 510 can be set as a conical cylinder with a continuously changing diameter. When the diameters of the ends of the two pipe sections 210 connected by the sealing connector 510 are greatly different and / or the tapers are greatly different, the sealing connector 510 can be set as a conical cylinder with a step-change diameter. For details, please refer to Figure 7 The sealing connector 510 includes a third conical cylinder 514 and a fourth conical cylinder 515 which are connected to each other. The third conical cylinder 514 and the fourth conical cylinder 515 have different tapers, so as to better connect the two pipe sections 210 with different tapers to each other.

[0082] In the technical solution of the embodiment of the present application, due to the design of the first annular plug-in groove 5101 and the second annular plug-in groove 5102, the two pipe segments 210 can be easily inserted into the corresponding plug-in grooves and quickly connected. When the pipe segment 210 connected to the sealing connector 510 can accommodate other pipe segments 210 or can be accommodated by other pipe segments 210, the pipe segment 210 that needs to be accommodated or the pipe segment 210 that can accommodate other pipe segments 210 can be easily disassembled. In addition, in the technical solution of the embodiment of the present application, since the sealing connector 510 is a structural member with a certain elasticity, after the end of the pipe segment 210 is plugged into the corresponding plug-in groove, it can squeeze the groove wall of the plug-in groove, so that the end of the pipe segment 210 can fit tightly with the groove wall of the corresponding plug-in groove, thereby effectively sealing the gap at the connection of the two pipe segments 210, avoiding air leakage, and improving the efficiency of the fan.

[0083] See also Figure 8 In some embodiments, the fan further includes a sealing connector 510, which is annular, and has a first annular plug-in groove 5101 and a second annular plug-in groove 5102 on both sides of the axial direction. In a connected state, a sealing connector 510 is provided between the air duct 200 and the shell 100, and the first annular plug-in groove 5101 is plug-fitted with one end of the air duct 200, and the second annular plug-in groove 5102 is plug-fitted with one end of the shell 100.

[0084] In this example, see Figure 2 The air duct 200 may be configured to be detachably connected to at least two adjacent pipe sections 210, see Figure 4 and Figure 5 The air duct 200 may also be configured such that at least two pipe sections 210 are axially movably connected to each other. In the above two implementations, the sealing connector 510 is used to detachably connect one end of the air duct 200 to the housing 100, that is, to detachably connect the pipe section 210 at one end of the air duct 200 to the housing 100.

[0085] Specifically, the sealing connector 510 can be made of polyester, hard rubber, etc. Figure 8 The sealing connector 510 includes an outer sealing ring 511, an inner sealing ring 512 and a connecting ring 513 connected between the outer sealing ring 511 and the inner sealing ring 512. The cross-section of the sealing connector 510 formed by the outer sealing ring 511, the inner sealing ring 512 and the connecting ring 513 is roughly I-shaped. A first annular plug-in groove 5101 is formed between the same side of the outer sealing ring 511 and the inner sealing ring 512 and the connecting ring 513, and a second annular plug-in groove 5102 is formed between the other side of the outer sealing ring 511 and the inner sealing ring 512 and the connecting ring 513.

[0086] The sealing connector 510 can be set to be cylindrical, or it can be set to be a conical cylinder with a certain taper. For example, when the diameters of the end of the air duct 200 used to connect with the housing 100 and the end of the housing 100 used to connect with the air duct 200 are close to or the same, the shape of the sealing connector 510 can be set to be a cylindrical body accordingly. Figure 1 The air duct 200 includes a second conical cylinder 202, see Figure 2 The housing 100 includes a first conical cylinder 1002, and the first conical cylinder 1002 and the second conical cylinder 202 have the same taper and are connected to each other through a sealing connector 510. In this case, please refer to Figure 8 The sealing connector 510 can be configured as a conical cylinder with a continuously changing diameter. Of course, when the diameter difference and / or taper difference between the end of the pipe section 210 connected by the sealing connector 510 and the end of the housing 100 are large, the sealing connector 510 can be configured as a conical cylinder with a step-change diameter.

[0087] In the technical solution of the embodiment of the present application, due to the design of the first annular plug-in groove 5101 and the second annular plug-in groove 5102, the air duct 200 and the housing 100 can be easily inserted into the corresponding plug-in grooves, so that the air duct 200 and the housing 100 can be quickly connected, which is conducive to improving the maintenance and installation efficiency. In addition, in the technical solution of the embodiment of the present application, since the sealing connector 510 is a structural member with a certain elasticity, the end of the air duct 200 and the end of the housing 100 can squeeze the groove wall of the plug-in groove after being plugged into the corresponding plug-in groove, so that the end of the air duct 200 and the end of the housing 100 can fit closely with the groove wall of the corresponding plug-in groove, thereby effectively sealing the gap at the connection between the air duct 200 and the housing 100, avoiding air leakage, and improving the efficiency of the fan.

[0088] In some embodiments, the inner wall of the sealing connector 510 is streamlined along the axial direction of the sealing connector 510, which is not shown in the figure.

[0089] The streamlined inner wall of the sealing connector 510 can be understood as a smooth curved surface with no protruding edges and corners, and can allow airflow to flow smoothly through the sealing connector 510 with less energy dissipation. For example, the inner wall of the sealing connector 510 can adopt a curved surface that is the same as or similar to the curved surface of the top of the automobile body.

[0090] Such a design reduces the friction between the airflow and the inner wall of the sealing connector 510, allowing the airflow to flow more smoothly.

[0091] See also Figure 6 and Figure 8 In some embodiments, the inner wall of the sealing connector 510 includes a plurality of annular surfaces 5103 that are sequentially connected at an angle along the axial direction of the sealing connector 510 , and the angle between each two adjacent annular surfaces 5103 is an obtuse angle.

[0092] Specifically, the annular surface 5103 is a flat annular surface, for example, the annular surface 5103 may be a part of a conical surface, a part of a cylindrical surface, etc. The number of the annular surfaces 5103 may be two or more, and the angle between each two adjacent annular surfaces 5103 may be set to 95° to 175°.

[0093] In the technical solution of the embodiment of the present application, the inner wall of the sealing connector 510 is set to include multiple annular surfaces 5103, and the angle between each two adjacent annular surfaces 5103 is set to an obtuse angle, which can reduce the friction between the airflow and the inner wall of the sealing connector 510, allowing the airflow to flow more smoothly. In addition, compared to setting the inner wall of the sealing connector 510 to be streamlined, in the technical solution of the embodiment of the present application, the inner wall of the sealing connector 510 is set to include multiple annular surfaces 5103, and the processing technology is simpler, which is beneficial to reducing the cost of the sealing connector 510.

[0094] For example, see Figure 6 , the sealing connector 510 is connected between the two pipe sections 210, the number of the annular surfaces 5103 is three, each of the annular surfaces 5103 is a part of a conical surface, and the angle between each two adjacent annular surfaces 5103 is set to 160°. It can be understood that the cross-section of the structure of the sealing connector 510 located in the air duct 200 is roughly trapezoidal, that is, the side of the inner sealing ring 512 close to the pipe section 210 is substantially parallel to the side away from the pipe section 210, and the width of the side close to the pipe section 210 is greater than the width of the side away from the pipe section 210. With such a design, the number of annular surfaces 5103 is appropriate, which is convenient for processing, and the shape of the inner side wall of the inner sealing ring 512 is also conducive to smooth passage of airflow.

[0095] See also Figure 6 and Figure 8 In some embodiments, the fan further includes a fastener 520 , and the fastener 520 is interference-fitted on the outside of the sealing connector 510 .

[0096] Understandable, see Figure 6 When the sealing connector 510 is connected between two adjacent pipe sections 210, the fastener 520 is used to simultaneously press the sealing connector 510 against the outer side walls of the two adjacent pipe sections 210. Figure 8 When the sealing connector 510 is connected between the housing 100 and the air duct 200 , the fastener 520 is used to press the sealing connector 510 against the outer side walls of the housing 100 and the air duct 200 at the same time.

[0097] Specifically, the fastener 520 can be configured as a throat clamp or a steel ring, etc., and can be configured as required, and this embodiment does not limit this. In addition, when the sealing connector 510 has a certain taper, the fastener 520 also has a certain taper correspondingly.

[0098] In the technical solution of the embodiment of the present application, when the sealing connector 510 and the fastener 520 are arranged between two adjacent pipe sections 210, the fastener 520 can simultaneously press the sealing connector 510 against the outer side walls of the two pipe sections 210, so that the sealing connector 510 can more effectively seal the gap between the two pipe sections 210, and can also enhance the connection strength of the two pipe sections 210. When the sealing connector 510 and the fastener 520 are arranged between the housing 100 and the air duct 200, the fastener 520 can simultaneously press the sealing connector 510 against the outer side walls of the housing 100 and the air duct 200, so that the sealing connector 510 can more effectively seal the gap between the housing 100 and the air duct 200, and can also enhance the connection strength of the housing 100 and the air duct 200.

[0099] See also Figures 1 to 3 In some embodiments, the fan further includes a plurality of first support members 410 , each of which is used to support an end of the corresponding pipe segment 210 away from the housing 100 .

[0100] It can be understood that the number of the first support members 410 is equal to the number of the pipe segments 210 , and each first support member 410 is used to support an end of a pipe segment 210 away from the housing 100 .

[0101] Specifically, the first support member 410 can be detachably connected to the corresponding pipe section 210 by means of threaded connection, snap connection, etc., and the first support member 410 can also be directly fixedly connected to the corresponding pipe section 210 by means of welding, etc.

[0102] Please note that Figure 1 When the fan is in working state, that is, when the air duct 200 and the shell 100 are in a connected state, the bottom of the first support member 410 can be fixedly connected to the external support surface, or it can be only supported on the external support surface without being fixedly connected to the external support surface. When the fan needs to be switched from working state to non-working state, if the first support member 410 is fixedly connected to the external support surface in the working state of the fan, it is first necessary to release the connection between the first support member 410 and the external support surface; then, move the first support member 410 and the corresponding pipe section 210 as a whole until the corresponding pipe section 210 is accommodated in the accommodating cavity 101 of the shell 100, and the first support member 410 remains outside the accommodating cavity 101 and is supported on the external support surface, as shown in FIG. Figure 2 Of course, in this process, the connection between the first support member 410 and the external support surface and between the first support member 410 and the pipe section 210 can also be released at the same time, and after the pipe section 210 is accommodated in the accommodating cavity 101, the first support member 410 is supported between the external support surface and the pipe section 210; please refer to Figure 2After the first support member 410 and the corresponding pipe segment 210 are in the above state, in order to make the pipe segment 210 more stably accommodated in the accommodation cavity 101, the first support member 410 can be fixedly connected to the external support surface.

[0103] In the technical solution of the embodiment of this application, please refer to Figure 1 When the fan is in operation, at least two first support members 410 can stably support the air duct 200 as a whole on the external support surface, reducing vibration and movement caused by the operation of the fan, and each first support member 410 supports a pipe section 210, which is conducive to more evenly distributing the weight of the air duct 200 and the load generated by the operation of the fan, reducing damage or deformation caused by stress concentration, and improving the stability of the fan and structure. Figure 2 When the fan is in a non-working state, each first support member 410 can provide support for the corresponding pipe segment 210 in a disassembled state, preventing each pipe segment 210 from falling out of the accommodating cavity 101, so that each pipe segment 210 is stably accommodated in the accommodating cavity 101.

[0104] For example, see Figure 3 The first support member 410 may include two first support rods 411, the bottoms of the two first support rods 411 are supported on the external support surface respectively, and the tops of the two first support rods 411 are connected to the two ends of the corresponding pipe section 210 along the same radial direction respectively. In addition, the first support rod 411 may include a first rod body 4111 and a first mounting plate 4112, the first mounting plate 4112 may be welded to the outer wall of the air duct 200, the top of the first rod body 4111 may be connected to the first mounting plate 4112 through a threaded connector, welding the mounting plate to the outer wall of the air duct 200 may improve the connection firmness between the first support rod 411 and the air duct 200, thereby increasing the stability of the entire structure, connecting the first rod body 4111 and the first mounting plate 4112 through a threaded connector may facilitate the disassembly and maintenance of the first rod body 4111, and connecting the first rod body 4111 and the first mounting plate 4112 through a threaded connector may also facilitate the adjustment of the height of the air duct 200.

[0105] See also Figure 2 In some embodiments, the fan further includes a plurality of second support members 420 . When in the disassembled state, each second support member 420 is used to support an end of the corresponding pipe segment 210 close to the housing 100 .

[0106] It can be understood that the number of the second support members 420 is equal to the number of the pipe segments 210 , and each second support member 420 is used to support one end of a pipe segment 210 close to the housing 100 .

[0107] Specifically, the second support member 420 can be detachably connected to the corresponding pipe segment 210 by means of snap-fitting, screw locking, etc., or can be directly fixedly connected to the corresponding pipe segment 210 by means of bonding, etc., or can simply abut against the corresponding pipe segment 210. This embodiment does not impose a sole limitation on the connection method between the second support member 420 and the pipe segment 210.

[0108] Furthermore, the second support member 420 can be configured as a fan-shaped structure or a ring-shaped structure. The second support member 420 can support the outer wall of the corresponding pipe segment 210, or can simultaneously support the outer wall and end face of the corresponding pipe segment 210. Furthermore, the second support member 420 can be made of materials such as sponge, rubber, and silicone. This embodiment does not impose a sole limitation on the specific structure and material of the second support member 420.

[0109] It should be noted that, when the fan is in a non-working state, that is, when the air duct 200 and the shell 100 are in a disassembled state, the second support member 420 will be completely accommodated in the accommodating chamber 101, and it is difficult to install the second support member 420 inside the accommodating chamber 101. Therefore, before the pipe segment 210 is placed into the accommodating chamber 101, a second support member 420 may be provided on the outer wall of each pipe segment 210; then, the pipe segment 210 is placed in the accommodating chamber 101 or accommodated in the corresponding pipe segment 210. Specifically, for the pipe segment 210 directly supported on the inner wall of the accommodating chamber 101, the pipe segment 210 and the corresponding second support member 420 may be placed as a whole in the accommodating chamber 101; for the pipe segment 210 accommodated in other pipe segments 210, the pipe segment 210 and the corresponding second support member 420 may be placed as a whole in the pipe segment 210 that can accommodate the pipe segment 210.

[0110] Of course, before the pipe segment 210 is placed into the accommodating chamber 101, a plurality of second support members 420 may be provided on the inner side wall of the accommodating chamber 101, and a second support member 420 may be provided on the inner side wall of each pipe segment 210 that can accommodate other pipe segments 210. Then, the pipe segment 210 may be placed into the accommodating chamber 101 or accommodated in a corresponding pipe segment 210. Specifically, for the pipe segment 210 directly supported on the second support member 420 in the accommodating chamber 101, the pipe segment 210 is placed into the accommodating chamber 101 and supported on a second support member 420 in the accommodating chamber 101. For the pipe segment 210 accommodated in other pipe segments 210, the pipe segment 210 is placed on the second support member 420 in the pipe segment 210 that can accommodate the pipe segment 210.

[0111] In the technical solution of the embodiment of the present application, when the fan is in a non-working state, each second support member 420 can support the end of the corresponding pipe segment 210 close to the shell 100, so that the two ends of each pipe segment 210 are supported by a first support member 410 and a second support member 420 respectively, which can make each pipe segment 210 more stably accommodated in the accommodating cavity 101, and can make each pipe segment 210 in a better stress state when in the storage state, and can also make a gap between two adjacent pipe segments 210 to avoid collision or friction between the two adjacent pipe segments 210.

[0112] See also Figure 2 In some embodiments, in the disassembled state, multiple pipe segments 210 are sequentially socketed from the inside to the outside, and among the multiple second support members 420, one second support member 420 is supported between the shell 100 and the pipe segment 210 with the largest cross-sectional size, and the other second support members 420 are respectively supported between two adjacent pipe segments 210.

[0113] In the technical solution of the embodiment of the present application, both ends of each pipe segment 210 are supported by a first support member 410 and a second support member 420 respectively, and each pipe segment 210 can be stably accommodated in the accommodating cavity 101; and the volume of the air duct 200 in the disassembled state is roughly equal to the volume of the single pipe segment 210 with the largest cross-sectional dimension, which can greatly reduce the volume of the air duct 200 in the disassembled state, and then reduce the volume of the accommodating cavity 101, so that the volume and floor space of the fan in the non-working state are smaller.

[0114] See also Figures 1 to 3 In some embodiments, the fan further includes a third support member 430 , and the third support member 430 is used to support the housing 100 .

[0115] Specifically, see Figure 3 The third support member 430 may include two second support rods 431 , the bottoms of the two second support rods 431 are respectively supported on the external support surface, and the tops of the two second support rods 431 are respectively connected to two ends of the shell 100 along the same radial direction.

[0116] Specifically, the second support rod 431 may include a second rod body 4311 and a second mounting plate 4312. The second mounting plate 4312 may be welded to the outer wall of the shell 100. The top of the second rod body 4311 may be connected to the second mounting plate 4312 via a threaded connector. Welding the mounting plate to the outer wall of the shell 100 can enhance the connection firmness between the second support rod 431 and the air duct 200, thereby increasing the stability of the entire structure. Connecting the second rod body 4311 and the second mounting plate 4312 via a threaded connector can facilitate the disassembly, assembly and maintenance of the second rod body 4311. Connecting the second rod body 4311 and the second mounting plate 4312 via a threaded connector can also facilitate adjusting the height of the shell 100.

[0117] In the technical solution of the embodiment of the present application, when the fan is in working state or non-working state, the third support member 430 can stably support the shell 100 as a whole on the external support surface, which can reduce the vibration and movement caused by the operation of the fan.

[0118] See also Figure 2 In some embodiments, the accommodating chamber 101 includes a first accommodating chamber 1011 and a second accommodating chamber 1012 which are interconnected. The first accommodating chamber 1011 is used to accommodate the fan body 300. The second accommodating chamber 1012 is located on the air outlet side of the first accommodating chamber 1011 and is interconnected with the air outlet 102, and is used to accommodate the air duct 200 when in a disassembled state.

[0119] It can be understood that the shell 100 can also be provided with an air inlet 103, and the air inlet 103 and the first accommodating chamber 1011 are connected to each other. The air flow enters the first accommodating chamber 1011 from the air inlet 103. Under the pressurization of the fan body 300, the pressure of the air flow increases, and it flows from the first accommodating chamber 1011 through the second accommodating chamber 1012, the air outlet 102, and the inner cavity of the air duct 200 in sequence, and finally flows out of the inner cavity of the air duct 200 from the end of the air duct 200 away from the shell 100.

[0120] In the technical solution of the embodiment of the present application, when the fan is in a working state, the second accommodating chamber 1012 serves as a part of the air flow channel, and when the fan is in a non-working state, the second accommodating chamber 1012 serves as a storage space for accommodating the air duct 200. In this way, there is no need to set up additional storage space for the air duct 200, and the space of the shell 100 can be fully utilized, so that the volume footprint of the fan in both the working state and the non-working state is smaller.

[0121] See also Figures 1 to 3 , Figure 6 as well as Figure 8In some embodiments, the fan includes a housing 100 , an air duct 200 , a fan body 300 , two first support members 410 , two second support members 420 , a third support member 430 , two sealing connectors 510 and two fasteners 520 .

[0122] Among them, see Figure 1 and Figure 2 The housing 100 has a housing chamber 101, an air outlet 102 and an air inlet 103. The housing chamber 101 includes a first housing chamber 1011 and a second housing chamber 1012 which are interconnected. The first housing chamber 1011 is interconnected with the air inlet 103. The fan body 300 is accommodated in the first housing chamber 1011. The second housing chamber 1012 is located at the air outlet side of the first housing chamber 1011 and is interconnected with the air outlet 102.

[0123] See also Figure 1 and Figure 2 The air duct 200 is detachably connected to the air outlet 102 of the shell 100. When the air duct 200 and the shell 100 are in a connected state, the inner cavity of the air duct 200 is interconnected through the air outlet 102 and the second accommodating cavity 1012 of the shell 100. When the air duct 200 and the shell 100 are in a disassembled state, the air duct 200 is separated from the air outlet 102, and the air duct 200 is accommodated in the second accommodating cavity 1012.

[0124] See also Figure 1 and Figure 2 The air duct 200 includes two pipe sections 210, wherein the first pipe section 210 is a conical cylinder, and the second pipe section 210 includes a conical cylinder and a cylinder connected to each other. In the connected state, the end of the first pipe section 210 with a larger diameter is detachably connected to the air outlet 102, and the end of the first pipe section 210 with a smaller diameter is detachably connected to the end of the second pipe section 210 with a larger diameter. In the disassembled state, the first pipe section 210 is accommodated in the second accommodation cavity 1012 of the housing 100, and the second pipe section 210 is accommodated inside the first pipe section 210.

[0125] See also Figure 6 and Figure 8 The two sealing connectors 510 are both annular, and the two sides of each sealing connector 510 in the axial direction are respectively provided with a first annular plug-in groove 5101 and a second annular plug-in groove 5102, see Figure 6 , the first annular insertion groove 5101 and the second annular insertion groove 5102 of a sealing connector 510 are respectively plugged into and matched with a pipe section 210, so that the two pipe sections 210 are sealed and detachably connected. Figure 8The first annular plug-in groove 5101 of another sealing connector 510 is plugged into one end of the air duct 200, and the second annular plug-in groove 5102 is plugged into one end of the shell 100, so as to make the shell 100 and the air duct 200 detachably connected.

[0126] See also Figure 6 and Figure 8 The inner side wall of each sealing connector 510 includes three annular surfaces 5103 sequentially connected along the axial direction of the sealing connector 510 , and the angle between every two adjacent annular surfaces 5103 is an obtuse angle.

[0127] See also Figure 6 and Figure 8 The two fasteners 520 are respectively interference-fitted on the outer sides of the two sealing connectors 510 .

[0128] See also Figures 1 to 3 The two first support members 410 are used to support the ends of the two pipe sections 210 away from the housing 100. Figure 3 Each first support member 410 includes two first support rods 411, and the two first support rods 411 are fixed to the external support surface. The tops of the two first support rods 411 are respectively fixedly connected to the two ends of the corresponding pipe section 210 in the same radial direction. The first support rod 411 includes a first mounting plate 4112 welded to the outer wall of the pipe section 210 and a first rod body 4111 threadedly connected to the first mounting plate 4112 at the top, and the bottom end of the first rod body 4111 is supported on the external support surface.

[0129] See also Figure 2 When the air duct 200 and the housing 100 are in a disassembled state, the two second support members 420 are respectively used to support one end of the two pipe sections 210 close to the housing 100 .

[0130] See also Figures 1 to 3 The third support member 430 is used to support the housing 100, see Figure 3 The third support member 430 includes two second support rods 431, the bottoms of the two second support rods 431 are fixedly connected to the external support surface, and the tops of the two second support rods 431 are respectively connected to the two ends of the same radial direction of the housing 100. The second support rod 431 includes a second rod body 4311 and a second mounting plate 4312, the second mounting plate 4312 is welded to the outer wall of the housing 100, the top of the second rod body 4311 is threadedly connected to the second mounting plate 4312, and the bottom end of the second rod body 4311 is supported on the external support surface.

[0131] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A fan, characterized in that: The fan comprises: Fan body; A housing having a receiving cavity and an air outlet communicated with the receiving cavity, wherein the fan body is received in the receiving cavity; The air duct is detachably connected to the shell. When the air duct and the shell are in a connected state, the inner cavity of the air duct is communicated with the accommodating cavity through the air outlet. When the air duct and the shell are in a disassembled state, the air duct is separated from the air outlet, and the air duct can be accommodated in the accommodating cavity.

2. The fan according to claim 1, characterized in that: The air duct includes a plurality of pipe segments. In the connected state, the plurality of pipe segments are connected in sequence; in the disassembled state, at least one pipe segment is accommodated in another pipe segment.

3. The fan according to claim 2, characterized in that: In the connected state, at least two adjacent pipe sections are detachably connected.

4. The fan according to claim 2, characterized in that: At least two of the pipe sections are axially movably connected to each other, and the pipe section with a larger cross-sectional size extends inwardly to form a first stop ring, and the pipe section with a smaller cross-sectional size extends outwardly to form a second stop ring that can cooperate with the first stop ring.

5. The fan according to claim 4, characterized in that: The fan further includes an annular seal disposed between the first stop ring and the second stop ring.

6. The fan according to claim 2, characterized in that: The fan further comprises an annular sealing connector, and a first annular plug-in groove and a second annular plug-in groove are respectively provided on two axial sides of the sealing connector; In the connected state, the sealing connector is provided between at least two adjacent pipe sections, and the first annular plug-in groove and the second annular plug-in groove are respectively plug-fitted with the two adjacent pipe sections; and / or, the sealing connector is provided between the air duct and the shell, the first annular plug-in groove is plug-fitted with one end of the air duct, and the second annular plug-in groove is plug-fitted with one end of the shell.

7. The fan according to claim 6, characterized in that: The inner side wall of the sealing connector is streamlined along the axial direction of the sealing connector; Alternatively, the inner side wall of the sealing connector includes a plurality of annular surfaces which are sequentially connected at an angle along the axial direction of the sealing connector, and the angle between every two adjacent annular surfaces is an obtuse angle.

8. The fan according to claim 6, characterized in that: The fan further comprises a fastener, and the fastener is interference-sleeved on the outer side of the sealing connector.

9. The fan according to any one of claims 2 to 8, characterized in that: The fan further includes a plurality of first support members, each of which is used to support an end of the corresponding pipe segment away from the housing.

10. The fan according to claim 9, characterized in that: The fan further comprises a plurality of second support members, and in the disassembled state, each of the second support members is used to support an end of the corresponding pipe segment close to the shell.

11. The fan according to claim 9, characterized in that: The fan further includes a third support member, and the third support member is used to support the housing.

12. The fan according to any one of claims 1-8, 10 and 11, characterized in that: The accommodating chamber includes a first accommodating chamber and a second accommodating chamber which are interconnected. The first accommodating chamber is used to accommodate the fan body. The second accommodating chamber is located on the air outlet side of the first accommodating chamber and is interconnected with the air outlet, and is used to accommodate the air duct in the disassembled state.

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