Fan

Abstract

The utility model provides a fan which comprises a pitching support, a first fan, a second fan and a third fan. The pitching support comprises one of a first installation shaft and a first installation channel. The fan head comprises the other one of the first mounting shaft and the first mounting channel, a first fog passing channel is formed in the first mounting shaft, and the first mounting shaft can be rotatably mounted in the first mounting channel; the second fog passing channel is arranged on the pitching bracket and is communicated with the first mounting channel; and the sealing assembly is arranged between the first mounting channel and the first mounting shaft so as to seal a gap between the first mounting channel and the first mounting shaft. According to the arrangement, the first mounting shaft can serve as a rotating connecting piece between the fan head and the pitching support to achieve the pitching function of the fan head and can also serve as a mist passing channel to enable mist to flow into the fan head, and therefore the mist passing channel does not need to be additionally arranged in the fan head, the fan structure is simplified, and the product cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of household electrical appliances, and in particular, to a fan. Background Art

[0002] In a related solution, a fan with humidification function is proposed. Figure 1 As shown, this type of fan generates water mist through an atomizer (installed in the chassis 1') to achieve humidification. However, this type of fan, water tank 14' and mist outlet 16' are all installed on the chassis 1', making it impossible to adjust the mist outlet direction of the mist outlet 16'.

[0003] Therefore, how to design a fan with an adjustable mist outlet direction has become an urgent problem to be solved. Utility Model Content

[0004] The utility model aims to at least solve the problem in the prior art or related art that the mist outlet direction of the fan cannot be adjusted.

[0005] Therefore, the purpose of the present invention is to provide a fan.

[0006] To achieve the above-mentioned purpose, the technical solution of the present invention provides a fan, including: a pitch bracket, the pitch bracket including a first mounting shaft and a first mounting channel; a fan head, including the first mounting shaft and the other of the first mounting channel, a first mist passage is formed inside the first mounting shaft, and the first mounting shaft can be rotatably installed in the first mounting channel; a second mist passage is arranged on the pitch bracket and is connected to the first mounting channel; a sealing assembly is arranged between the first mounting channel and the first mounting shaft to seal the gap between the first mounting channel and the first mounting shaft.

[0007] According to the fan provided by the present application, the pitch bracket and the fan head are rotatably connected through the first mounting shaft and the first mounting channel, so that the fan can use the pitch bracket as a support member of the fan head, so that the fan head can rotate relative to the pitch bracket to realize the pitch function. At the same time, a first mist passage is formed inside the first mounting shaft, and is connected to the second mist passage provided on the pitch bracket. In this way, the mist entering the second mist passage can flow directly from the inside of the first mounting shaft into the fan head, that is, the first mounting shaft can serve as a rotating connection between the fan head and the pitch bracket to realize the pitch function of the fan head, and can also serve as a mist passage to allow the mist to flow into the inside of the fan head, so that there is no need to add an additional mist passage in the fan head, thereby simplifying the fan structure and reducing product costs. At the same time, this setting can guide the mist generated by the fan to the fan head, and then the mist is discharged from the fan head. On the one hand, the mist discharge direction of the fan can be adjusted according to the fan head, and on the other hand, the mist discharge position is set relatively high, so that the mist can be distributed more evenly in the environment.

[0008] Furthermore, to prevent mist from leaking from the connection between the first mounting channel and the first mounting shaft, this connection needs to be sealed. However, since the first mounting channel is stationary, the first mounting shaft of the fan head rotates relative to the first mounting channel during operation, which involves dynamic sealing issues between the two. Therefore, this application provides a sealing assembly at the connection between the first mounting channel and the first mounting shaft, connecting the first mounting channel and the first mounting shaft via a sliding seal. This improves the sealing effect of the connection between the first mounting channel and the first mounting shaft and prevents the risk of mist leakage.

[0009] The sealing assembly may be a mechanical sealing assembly, a packing sealing assembly or a piston ring sealing assembly.

[0010] In any of the above embodiments, optionally, a first supporting surface is provided in the first installation channel, and the sealing assembly is abuttingly installed between the first supporting surface and the first installation shaft.

[0011] In this embodiment, a first support surface is provided within the first mounting channel to position and install the sealing assembly. One axial end surface of the sealing assembly abuts the first support surface, while the other axial end surface of the sealing assembly abuts the first mounting shaft, thereby achieving axial positioning and installation of the sealing assembly.

[0012] In any of the above embodiments, optionally, the first mounting shaft includes: a first shaft body, which can be rotatably installed in the first mounting channel, and the first mist passage is arranged in the first shaft body; a first sleeve, which is sleeved and installed on the first shaft body and can rotate with the first mounting shaft; wherein the sealing assembly is abutted and installed between the first support surface and the end face of the first sleeve, and / or the end of the sealing assembly away from the first support surface is sleeved and installed on the first shaft body.

[0013] In this embodiment, the first mounting shaft includes a first shaft body, within which a first mist passage is disposed. To facilitate contact with the sealing assembly, a first sleeve is additionally disposed outside the first shaft body. The sleeve forms an abutment support surface for contact with the sealing assembly. Furthermore, to ensure the sealing effectiveness of the sealing assembly, a portion of the sealing assembly can be sleeved onto the first shaft body, simultaneously contacting the first sleeve, thereby enabling the sealing assembly to form a double seal with the first mounting shaft.

[0014] In any of the above embodiments, optionally, a baffle portion is provided at one end of the first sleeve close to the first supporting surface, and an end surface of the sealing assembly away from the first supporting surface abuts against the baffle portion.

[0015] In this embodiment, in order to increase the contact area between the sealing assembly and the first sleeve, a special baffle portion is provided on the first sleeve. During installation, the sealing assembly can be sealed and installed between the first supporting surface and the baffle portion.

[0016] In any of the above embodiments, optionally, the fan further includes: an elastic member, which is sleeved and installed outside the first shaft sleeve and is compressed and installed between the baffle portion and the fan head.

[0017] In this technical solution, the fan also includes an elastic member, which is compressively installed between the baffle portion and the fan head, so that the elastic member always gives the first sleeve an axial thrust, thereby ensuring that the sealing assembly and the first sleeve are always in close contact, thereby ensuring the sealing effect between the sealing assembly and the first sleeve.

[0018] In any of the above embodiments, optionally, the baffle portion is a wear-resistant part.

[0019] In this embodiment, the baffle portion is provided as a wear-resistant part, which can reduce the wear between the sealing assembly and the first sleeve, and avoid the situation where the first sleeve is damaged after long-term use and causes sealing failure.

[0020] Optionally, the first installation shaft further includes a first wear-resistant portion, the sealing assembly includes a second wear-resistant portion, and the sealing assembly and the first installation shaft are slidably sealed via the first wear-resistant portion and the second wear-resistant portion.

[0021] In this technical solution, the other end of the sealing assembly and the first sleeve are dynamically sealed by the first wear-resistant portion and the second wear-resistant portion. The first wear-resistant portion and the second wear-resistant portion are relatively smooth structures, thereby ensuring relative sliding between the two and achieving sealing between the two.

[0022] Optionally, the first wear-resistant portion is specifically provided on the first sleeve. Optionally, one of the first wear-resistant portion and the second wear-resistant portion is a ceramic sheet, and the other of the first wear-resistant portion and the second wear-resistant portion is a graphite sheet.

[0023] In this technical solution, the ceramic sheet has high hardness and wear resistance, while the graphite sheet has certain elasticity and scalability. The combined use of the ceramic and graphite sheets can fully leverage their respective advantages, thereby improving the sealing between the sealing assembly and the first sleeve, ensuring excellent sealing performance under various operating conditions. It also increases the overall service life of the sealing assembly and the first sleeve, preventing damage.

[0024] In any of the above embodiments, optionally, the first sleeve includes a first sealing ring, the first sealing ring is sleeved and mounted on the first shaft, and an interference fit is formed between the first sealing ring and the first shaft.

[0025] The first sleeve also includes a first sealing ring, and the elastic member is sleeved outside the first sealing ring. The first sealing ring is in a compressed installation state. Thus, under the action of the elastic member, the first sealing ring has a tendency to rebound, thereby ensuring that the first sleeve and the sealing assembly are always in close contact.

[0026] In this technical solution, the first sleeve includes a first sealing ring and a first wear-resistant portion, which are integrally connected to each other. For example, the first sealing ring can be formed by insert injection molding. The interference fit between the first sealing ring and the first shaft ensures a seal between the first sleeve and the first shaft, preventing mist from leaking between the first sleeve and the first shaft.

[0027] Optionally, the sealing assembly includes a second sealing ring and a second wear-resistant portion, which are integrally connected to each other. For example, the second sealing ring can be formed by insert injection molding. The second sealing ring can achieve a seal between the sealing assembly and the pitch bracket, so that the mist discharged from the second mist passage can completely enter the sealing assembly and then enter the first mounting shaft through the sealing assembly. In this way, the seal between the second mist passage and the sealing assembly can be ensured, and mist leakage from the connection between the second mist passage and the sealing assembly can be prevented.

[0028] In any of the above embodiments, optionally, the pitch bracket includes: a bracket body, a second mist passage is arranged in the bracket body; a second sleeve is installed on the bracket body, including a first step portion and a second step portion connected to each other, a first channel is arranged in the first step portion, and a second channel is arranged in the second step portion, the first mounting shaft can be rotatably mounted in the second channel, the second mist passage is connected to the first channel, and the first mounting channel includes the first channel and the second channel.

[0029] In this embodiment, the pitch bracket includes a bracket body and a second sleeve. The first step portion of the second sleeve is connected to the second mist passage and the connection between the two is sealed, so that the mist flowing out of the second mist passage can pass into the interior of the second sleeve, that is, the sealing assembly and the second mist passage are sealed through the second sleeve. The sealing assembly and the first mounting shaft are installed in the second step portion of the second sleeve. At the same time, the inner diameter of the first step portion is smaller than the inner diameter of the second step portion, and the connection between the first step portion and the second step portion forms a step surface, which can be used as a first supporting surface. During installation, the first end of the sealing assembly can be installed in abutment with the step surface. The second end of the sealing assembly can be installed in abutment with the first mounting shaft. This structure uses the step surface for the axial end face of the sealing assembly to abut, so there is no need to set up an additional first supporting surface, which can reduce the processing difficulty of the second sleeve and thus reduce product costs.

[0030] In any of the above embodiments, optionally, the second mist passage includes a mist pipe, the mist pipe is sealed and connected to the first stepped portion, and the interior of the mist pipe is in communication with the first passage.

[0031] In this embodiment, the upper end of the second mist passage can be set as a mist pipe, such as an elastic mist pipe. During installation, a sealed connection can be achieved through the elasticity of the mist pipe and the first step portion.

[0032] In any of the above embodiments, optionally, the second sleeve further includes a plurality of screw columns for installing threaded connectors, and the second sleeve is installed on the bracket body through the plurality of threaded connectors.

[0033] In this technical solution, the second sleeve is also provided with multiple screw posts, through which threaded connectors are threaded to secure the second sleeve to the bracket body. This structure simplifies the structures of both the second sleeve and the bracket body, thereby reducing product costs. It also ensures reliable installation of the second sleeve on the bracket body, preventing the second sleeve from slipping off the bracket body.

[0034] In any of the above embodiments, optionally, the mist passing pipe includes an elastic mist passing pipe, one end of which is sleeved on the first stepped portion and sealedly connected to the first stepped portion.

[0035] In this embodiment, the provision of the elastic mist pipe makes the sealing installation of the mist pipe more convenient and also makes the sealing effect between the mist pipe and the first stepped portion better.

[0036] In any of the above embodiments, optionally, the fan head includes: a third shaft sleeve, and an end of the second shaft sleeve close to the fan head is confined in the third shaft sleeve.

[0037] In this technical solution, the fan head includes a third sleeve, and one end of the second step portion close to the fan head is limited in the third sleeve. In this way, the third sleeve can be used to axially limit the second step portion of the second sleeve to avoid axial displacement of the second sleeve.

[0038] In any of the above embodiments, optionally, a first limiting rib is provided in the third sleeve, and a limiting flange is provided on the second sleeve, and the limiting flange is located on the side of the first limiting rib close to the fan head; a first gap is provided between the limiting flange and the first limiting rib along the axial direction of the first mounting shaft, and a second gap is provided between the limiting flange and the third sleeve along the radial direction of the first mounting shaft.

[0039] In this technical solution, a first limiting rib is provided in the third sleeve, a limiting flange is provided on the second step portion, and the limiting flange is provided between the first limiting rib and the fan head. By the cooperation of the first limiting rib and the limiting flange, one end of the second sleeve is always located inside the third sleeve. In this way, the axial limitation of the second step portion can be achieved through the cooperation of the limiting flange and the first limiting rib, thereby avoiding axial displacement of the second sleeve.

[0040] Furthermore, since the limiting flange and the first limiting rib are provided with a first gap along the axial direction of the first mounting axis, and the limiting flange and the third sleeve are provided with a second gap along the radial direction of the first mounting axis, the processing error of the second sleeve can be effectively absorbed, and flexible rotation can be ensured, thereby avoiding interference between the second sleeve and the fan head after the fan is assembled due to processing errors or installation errors of the second sleeve.

[0041] In any of the above embodiments, optionally, the first mounting shaft is arranged on the first side of the fan head, and the fan head also includes a second mounting shaft, which is arranged on the second side of the fan head, and the first side of the fan head and the second side of the fan head are arranged opposite to each other; the pitch bracket includes a second mounting channel, and the second mounting shaft can be rotatably mounted in the second mounting channel; the fan also includes: a fourth shaft sleeve, which is installed in the second mounting channel and is sleeved on the outside of the second mounting shaft; a drive assembly, which is installed on the pitch bracket and connected to the second mounting shaft to drive the second mounting shaft to rotate.

[0042] In this technical solution, the fan head is equipped with a first and second mounting shafts, which are arranged opposite each other and are rotationally connected to the pitch bracket. The pitch bracket is also equipped with a second mounting channel that mates with the second mounting shaft. A fourth shaft sleeve is located between the second mounting shaft and the second mounting channel to reduce wear, corrosion, and scratches on the shafts during rotation. Furthermore, the pitch bracket is equipped with a drive assembly, which is connected to the second mounting shaft to drive the second mounting shaft to rotate, thereby driving the fan head to achieve the fan head's pitch function.

[0043] In the above technical solution, optionally, the second mounting shaft is a hollow shaft for allowing the connecting wires between the pitch bracket and the fan head to pass through.

[0044] In this technical solution, the second mounting shaft is a hollow shaft, and the connecting wires between the pitch bracket and the fan head can be routed through the inside of the second mounting shaft. This makes it possible to simply and conveniently connect the wires on the pitch bracket to the fan head, which not only simplifies the fan structure, but also improves the aesthetics of the product.

[0045] In any of the above embodiments, optionally, the driving assembly includes: a driving member, mounted on the pitch bracket, the driving member including an output shaft; a first gear, mounted on the output shaft; a second gear, mounted on the second mounting shaft, capable of engaging with the first gear; wherein the driving member can drive the second mounting shaft to rotate through the engagement of the first gear and the second gear.

[0046] In this technical solution, the driving force of the driving member is transmitted to the second mounting shaft through gear transmission, so that the axis of the second mounting shaft is eccentrically arranged with respect to the axial direction of the output shaft of the driving member, so that the hollow shaft of the second mounting shaft is not affected by the position of the driving member, and it is convenient to pass the connecting wire.

[0047] In any of the above embodiments, optionally, a limiting notch is provided on the second gear, a limiting protrusion is provided in the second installation channel, and the limiting protrusion is located in the limiting notch and can rotate in the limiting notch.

[0048] In this technical solution, by matching the limiting protrusion in the second mounting channel with the limiting notch on the second gear, the rotation angle of the second gear can be limited, thereby limiting the pitch angle of the fan head, ensuring that the fan operates within the effective area and improving the air supply efficiency.

[0049] In any of the above embodiments, optionally, the fan further includes: a humidifying component, the humidifying component is capable of generating mist, and the mist outlet of the humidifying component is connected to the second mist passage.

[0050] In this technical solution, the humidifying component is used to generate water mist required for humidifying the air, and the water mist generated by it can be guided to the fan head through the first mist passage and discharged into the air from the fan head.

[0051] In any of the above embodiments, optionally, the fan also includes: a chassis; a column tube, installed on the chassis, and the pitch bracket can be rotatably installed on the end of the column tube away from the chassis; wherein the humidifying component is installed on the chassis or installed in the column tube, and a third mist passage is provided in the column tube to connect the mist outlet and the second mist passage.

[0052] In this technical solution, the fan chassis supports the entire fan. The column tube provides the fan's vertical support structure, ensuring the fan head can be installed at a certain height. Furthermore, a third mist passage is provided within the column tube, allowing mist generated by the humidification assembly to pass through the third mist passage and then into the second mist passage.

[0053] In any of the above embodiments, optionally, the fan head further includes a front mesh cover and a rear mesh cover connected to each other, and the fan further includes: a mist exhaust port located on a side of the front mesh cover away from the rear mesh cover and connected to the first mist passage.

[0054] In this embodiment, the fan head further includes interconnected front and rear mesh covers. The fan head also includes fan blades, which rotate to generate airflow, which is then blown out through the front mesh cover. Furthermore, the front mesh cover is provided with a mist exhaust port. Mist within the first mounting shaft can be discharged through the mist exhaust port. By placing the mist exhaust port on the front mesh cover, the mist can be blown further away by the fan's wind, thereby expanding the fan's humidification range.

[0055] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0057] Figure 1 It is a structural diagram of a fan in a related solution.

[0058] in, Figure 1 The corresponding relationship between the reference numerals and component names is as follows:

[0059] 1' chassis, 14' water tank, 16' mist outlet.

[0060] Figure 2 This is one of the structural diagrams of the fan of the present utility model;

[0061] Figure 3 yes Figure 2 A partial enlarged schematic diagram of point A in the middle;

[0062] Figure 4 This is one of the schematic diagrams of the assembly structure of the fan head and the pitch bracket of the fan of the present invention;

[0063] Figure 5 yes Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0064] Figure 6 This is one of the exploded structural diagrams of the fan head and pitch bracket of the utility model;

[0065] Figure 7 This is the second schematic diagram of the assembly structure of the fan head and the pitch bracket of the fan of the present invention;

[0066] Figure 8 This is a schematic structural diagram of the second shaft sleeve of the fan of the present invention;

[0067] Figure 9 This is a schematic diagram of the matching structure of the first shaft sleeve and the sealing assembly of the fan of the present utility model;

[0068] Figure 10 This is one of the exploded structural diagrams of the first shaft sleeve and the sealing assembly of the fan of the present invention;

[0069] Figure 11 This is the second exploded structural diagram of the first shaft sleeve and the sealing assembly of the fan of the present invention;

[0070] Figure 12 This is the third schematic diagram of the assembly structure of the fan head and the pitch bracket of the fan of the present invention;

[0071] Figure 13 This is the fourth schematic diagram of the assembly structure of the fan head and the pitch bracket of the fan of the present invention;

[0072] Figure 14 This is the second schematic diagram of the exploded structure of the fan head and pitch bracket of the fan of the present invention;

[0073] Figure 15 This is the second structural diagram of the fan of the present invention.

[0074] in, Figures 2 to 15 The corresponding relationship between the reference numerals and component names is as follows:

[0075] 1 pitch bracket, 10 first installation channel, 12 bracket body, 122 third installation channel, 14 second installation channel, 142 limiting protrusion, 16 second shaft sleeve, 160 limiting flange, 162 first step, 1622 first channel, 164 second step, 1642 second channel, 166 first support surface, 168 step surface, 169 screw column, 2 fan head, 20 first installation axis, 22 first axis body, 222 first mist channel, 24 second installation axis, 26 first shaft sleeve, 262 baffle, 264 first resistance Grinding part, 266 first sealing ring, 272 front mesh cover, 2722 mist outlet, 274 rear mesh cover, 28 third shaft sleeve, 282 first limiting rib, 29 elastic part, 3 second mist passage, 32 mist pipe, 4 sealing assembly, 42 second wear-resistant part, 44 second sealing ring, 5 threaded connection, 6 fourth shaft sleeve, 7 drive assembly, 72 drive member, 74 first gear, 76 second gear, 762 limiting notch, 82 chassis, 84 column tube, 842 third mist passage, 9 humidification assembly, t1 first gap, t2 second gap. DETAILED DESCRIPTION

[0076] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0077] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0078] The following combination Figures 2 to 15 The fan provided by this application is described in detail.

[0079] like Figure 2 、 Figure 9 and Figure 13 As shown, an embodiment of the present invention provides a fan, comprising: a pitch bracket 1, the pitch bracket 1 including a first mounting shaft 20 and one of a first mounting channel 10; a fan head 2, including the first mounting shaft 20 and the other of the first mounting channel 10, a first mist passage 222 being formed inside the first mounting shaft 20, and the first mounting shaft 20 being rotatably mounted in the first mounting channel 10; a second mist passage 3, arranged on the pitch bracket 1 and connected to the first mounting channel 10; a sealing assembly 4, arranged between the first mounting channel 10 and the first mounting shaft 20 to seal the gap between the first mounting channel 10 and the first mounting shaft 20.

[0080] According to the fan provided by the present application, the pitch bracket 1 and the fan head 2 are rotatably connected through the first mounting shaft 20 and the first mounting channel 10, so that the fan can use the pitch bracket 1 as a support member for the fan head 2, so that the fan head 2 can rotate relative to the pitch bracket 1 to achieve the pitch function. At the same time, a first mist passage 222 is formed inside the first mounting shaft 20, and is connected to the second mist passage 3 provided on the pitch bracket 1. In this way, the mist entering the second mist passage 3 can flow directly from the inside of the first mounting shaft 20 into the fan head 2, that is, the first mounting shaft 20 can serve as a rotating connection between the fan head 2 and the pitch bracket 1 to achieve the pitch function of the fan head 2, and can also serve as a mist passage to allow the mist to flow into the inside of the fan head 2, so that there is no need to provide an additional mist passage in the fan head 2, thereby simplifying the fan structure and reducing product costs. At the same time, this setting can guide the mist generated by the fan to the fan head 2, and then the mist is discharged from the fan head 2. On the one hand, the mist discharge direction of the fan can be adjusted according to the fan head 2. On the other hand, the mist discharge position is set relatively high, so that the mist can be distributed more evenly in the environment.

[0081] Furthermore, in order to prevent mist from leaking from the connection between the first mounting channel 10 and the first mounting shaft 20, the connection needs to be sealed. However, since the first mounting channel 10 is stationary, the first mounting shaft 20 of the fan head 2 rotates relative to the first mounting channel 10 during operation, which involves a dynamic sealing problem between the two. Therefore, the present application provides a sealing assembly 4 at the connection between the first mounting channel 10 and the first mounting shaft 20, so that the first mounting channel 10 and the first mounting shaft 20 are connected by a sliding seal, thereby improving the sealing effect of the connection between the first mounting channel 10 and the first mounting shaft 20 and preventing the risk of mist leakage.

[0082] The sealing assembly 4 may be a mechanical sealing assembly, a packing sealing assembly or a piston ring sealing assembly.

[0083] like Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 8 As shown, in any of the above embodiments, optionally, a first supporting surface 166 is provided in the first installation channel 10 , and the sealing assembly 4 is abuttingly installed between the first supporting surface 166 and the first installation shaft 20 .

[0084] In this embodiment, a first support surface 166 is provided within the first installation passage 10 to position and install the sealing assembly 4. One axial end surface of the sealing assembly 4 abuts against the first support surface 166, while the other axial end surface of the sealing assembly 4 abuts against the first installation shaft 20, thereby achieving axial positioning and installation of the sealing assembly 4.

[0085] In any of the above embodiments, optionally, Figure 2 、 Figure 3 and Figure 4 As shown, the first mounting shaft 20 includes: a first shaft body 22, which can be rotatably installed in the first mounting channel 10, and the first mist passage 222 is arranged in the first shaft body 22; a first sleeve 26, which is sleeved and installed on the first shaft body 22 and can rotate with the first mounting shaft 20; wherein, the sealing assembly 4 is abutted and installed between the first support surface 166 and the end face of the first sleeve 26, and / or the end of the sealing assembly 4 away from the first support surface 166 is sleeved and installed on the first shaft body 22.

[0086] In this embodiment, the first mounting shaft 20 includes a first shaft body 22, within which a first mist passage 222 is disposed. To facilitate contact with the sealing assembly 4, a first sleeve 26 is additionally disposed on the outside of the first shaft body 22. This sleeve 26 forms an abutment support surface for contact with the sealing assembly 4. Furthermore, to ensure the sealing effect of the sealing assembly 4, a portion of the sealing assembly 4 can be sleeved and mounted on the first shaft body 22, simultaneously contacting the first sleeve 26, thereby enabling the sealing assembly 4 to form a double seal with the first mounting shaft 20.

[0087] In any of the above embodiments, optionally, Figure 2 and Figure 3 As shown, a baffle portion 262 is provided at one end of the first sleeve 26 close to the first support surface 166 , and an end surface of the sealing assembly 4 away from the first support surface 166 abuts against the baffle portion 262 .

[0088] In this embodiment, in order to increase the contact area between the sealing assembly 4 and the first sleeve 26, a special baffle portion 262 is provided on the first sleeve 26. During installation, the sealing assembly 4 can be sealed and installed between the first support surface 166 and the baffle portion 262.

[0089] In any of the above embodiments, optionally, Figures 2 to 6 as well as Figure 9 、 Figure 10 and Figure 11 As shown, the fan further includes: an elastic member 29 , which is sleeved and installed outside the first shaft sleeve 26 and is compressed and installed between the baffle portion 262 and the fan head 2 .

[0090] In this embodiment, the fan also includes an elastic member 29, which is compressively installed between the baffle portion 262 and the fan head 2, so that the elastic member 29 always gives the first sleeve 26 an axial thrust, thereby ensuring that the sealing assembly 4 and the first sleeve 26 are always in close contact, thereby ensuring the sealing effect between the sealing assembly 4 and the first sleeve 26.

[0091] In any of the above embodiments, optionally, the baffle portion 262 is a wear-resistant part.

[0092] In this embodiment, the baffle portion 262 is configured as a wear-resistant part, which can reduce the wear between the sealing assembly 4 and the first sleeve 26, and avoid the first sleeve 26 being damaged after long-term use, thereby preventing the sealing from failing.

[0093] Alternatively, as Figure 3 、 Figure 10 and Figure 11 As shown, the first installation shaft 20 further includes a first wear-resistant portion 264. The sealing assembly 4 includes a second wear-resistant portion 42. The sealing assembly 4 and the first installation shaft 20 are fitted together in a sliding seal via the first wear-resistant portion 264 and the second wear-resistant portion 42.

[0094] In this embodiment, the other end of the sealing assembly 4 and the first sleeve 26 are dynamically sealed by the first wear-resistant portion 264 and the second wear-resistant portion 42. The first wear-resistant portion 264 and the second wear-resistant portion 42 are relatively smooth structures, thereby ensuring that the two can slide relative to each other while also achieving sealing.

[0095] Alternatively, as Figure 3 、 Figure 10 and Figure 11 As shown, the first wear-resistant portion 264 is specifically provided on the first sleeve 26 .

[0096] Optionally, one of the first wear-resistant portion 264 and the second wear-resistant portion 42 is a ceramic sheet, and the other of the first wear-resistant portion 264 and the second wear-resistant portion 42 is a graphite sheet.

[0097] In this embodiment, because the ceramic sheet has high hardness and wear resistance, while the graphite sheet has a certain degree of elasticity and scalability, the combination of the ceramic sheet and the graphite sheet can fully utilize their respective advantages. This can improve the sealing between the sealing assembly 4 and the first sleeve 26, ensuring excellent sealing performance under various operating conditions. At the same time, it can also extend the overall service life of the sealing assembly 4 and the first sleeve 26 and prevent damage.

[0098] In any of the above embodiments, optionally, Figure 10 and Figure 11As shown, the first sleeve 26 includes a first sealing ring 266 . The first sealing ring 266 is sleeved and installed on the first shaft body 22 . An interference fit is formed between the first sealing ring 266 and the first shaft body 22 .

[0099] The first sleeve 26 further includes a first sealing ring 266, and the elastic member 29 is sleeved on the first sealing ring 266. The first sealing ring 266 is in a compressed state. Thus, under the action of the elastic member 29, the first sealing ring 266 has a tendency to rebound, thereby ensuring that the first sleeve 26 and the sealing assembly 4 are always in close contact.

[0100] In this embodiment, the first sleeve 26 includes a first sealing ring 266 and a first wear-resistant portion 264, which are integrally connected. For example, the first sealing ring 266 can be formed by insert injection molding. The interference fit between the first sealing ring 266 and the first shaft body 22 ensures a seal between the first sleeve 26 and the first shaft body 22, preventing mist from leaking between the first sleeve 26 and the first shaft body 22.

[0101] Alternatively, as Figure 10 and Figure 11 As shown, the sealing assembly 4 includes a second sealing ring 44 and a second wear-resistant portion 42, which are connected to each other as a whole. For example, the second sealing ring 44 can be formed by insert injection molding. The second sealing ring 44 can achieve sealing between the sealing assembly 4 and the pitch bracket 1, so that the mist discharged from the second mist passage 3 can all enter the sealing assembly 4, and then enter the first mounting shaft 20 through the sealing assembly 4, thereby ensuring the sealing between the second mist passage 3 and the sealing assembly 4, and preventing mist from leaking from the connection between the second mist passage 3 and the sealing assembly 4.

[0102] In any of the above embodiments, optionally, Figures 1 to 6 As shown, the pitch bracket 1 includes: a bracket body 12, in which a second mist passage 3 is arranged; a second sleeve 16, installed on the bracket body 12, including a first step portion 162 and a second step portion 164 connected to each other, a first channel 1622 is arranged in the first step portion 162, and a second channel 1642 is arranged in the second step portion 164, the first mounting shaft 20 can be rotatably mounted in the second channel 1642, the second mist passage 3 is connected to the first channel 1622, and the first mounting channel 10 includes the first channel 1622 and the second channel 1642.

[0103] In this embodiment, the pitch bracket 1 includes a bracket body 12 and a second sleeve 16. The first step portion 162 of the second sleeve 16 is connected to the second mist passage 3 and the connection between the two is sealed, so that the mist flowing out of the second mist passage 3 can pass into the interior of the second sleeve 16, that is, the sealing assembly 4 and the second mist passage 3 are sealed through the second sleeve 16. The sealing assembly 4 and the first mounting shaft 20 are installed in the second step portion 164 of the second sleeve 16. At the same time, the inner diameter of the first step portion 162 is smaller than the inner diameter of the second step portion 164, and the connection between the first step portion 162 and the second step portion 164 forms a step surface 168, which can be used as a first support surface 166. During installation, the first end of the sealing assembly 4 can be installed in abutment with the step surface 168. The second end of the sealing assembly 4 can be installed in abutment with the first mounting shaft 20. This structure utilizes the stepped surface 168 for the axial end face of the sealing assembly 4 to abut, thereby eliminating the need for an additional dedicated first support surface 166 , thereby reducing the difficulty of processing the second sleeve 16 and thereby reducing product costs.

[0104] A third installation channel 122 may be provided on the bracket body 12 to accommodate the installation of the second shaft sleeve 16 .

[0105] In any of the above embodiments, optionally, Figure 2 、 Figure 3 and Figure 5 As shown, the second mist passage 3 includes a mist passage pipe 32 , which is sealedly connected to the first stepped portion 162 , and the interior of the mist passage pipe 32 is in communication with the first passage 1622 .

[0106] In this embodiment, the upper end of the second mist passage 3 can be set as a mist pipe 32, such as an elastic mist pipe. During installation, a sealed connection can be achieved through the elasticity of the mist pipe 32 and the first step portion 162.

[0107] In any of the above embodiments, optionally, Figure 6 As shown, the second sleeve 16 further includes a plurality of screw columns 169 for mounting the threaded connectors 5 , and the second sleeve 16 is mounted on the bracket body 12 via the plurality of threaded connectors 5 .

[0108] In this embodiment, the second sleeve 16 is further provided with a plurality of screw posts 169, through which threaded connectors 5 are passed through the screw posts 169 to secure the second sleeve 16 to the bracket body 12. This structure simplifies the structures of the second sleeve 16 and the bracket body 12, thereby reducing product costs. At the same time, this structure also ensures the reliable installation of the second sleeve 16 on the bracket body 12 and prevents the second sleeve 16 from slipping off the bracket body.

[0109] In any of the above embodiments, optionally, the mist passing pipe 32 includes an elastic mist passing pipe, one end of which is sleeved on the first stepped portion 162 and sealedly connected to the first stepped portion 162 .

[0110] In this embodiment, the provision of the elastic mist pipe makes the sealing installation of the mist pipe more convenient and also makes the sealing effect between the mist pipe 32 and the first stepped portion 162 better.

[0111] In any of the above embodiments, optionally, Figure 3 、 Figure 4 and Figure 5 As shown, the fan head 2 includes a third shaft sleeve 28 , and an end of the second shaft sleeve 16 close to the fan head 2 is confined in the third shaft sleeve 28 .

[0112] In this embodiment, the fan head 2 includes a third sleeve 28, and the second step portion 164 is limited in the third sleeve 28 near one end of the fan head 2. In this way, the third sleeve 28 can be used to axially limit the second step portion 164 of the second sleeve 16 to avoid axial displacement of the second sleeve 16.

[0113] In any of the above embodiments, optionally, Figure 3 、 Figure 4 and Figure 5 As shown, a first limiting rib 282 is provided in the third sleeve 28, and a limiting flange 160 is provided on the second sleeve 16, and the limiting flange 160 is located on the side of the first limiting rib 282 close to the fan head 2; the limiting flange 160 and the first limiting rib 282 are provided with a first gap t1 along the axial direction of the first mounting shaft 20, and the limiting flange 160 and the third sleeve 28 are provided with a second gap t2 along the radial direction of the first mounting shaft 20.

[0114] In this embodiment, a first limiting rib 282 is provided in the third sleeve 28, a limiting flange 160 is provided on the second step portion 164, and the limiting flange 160 is provided between the first limiting rib 282 and the fan head 2, so that one end of the second sleeve 16 is always located inside the third sleeve 28 through the cooperation of the first limiting rib 282 and the limiting flange 160, so that the axial limitation of the second step portion 164 can be achieved through the cooperation of the limiting flange 160 and the first limiting rib 282, thereby avoiding axial displacement of the second sleeve 16.

[0115] Furthermore, since the limiting flange 160 and the first limiting rib 282 are provided with a first gap t1 along the axial direction of the first mounting shaft 20, and the limiting flange 160 and the third sleeve 28 are provided with a second gap t2 along the radial direction of the first mounting shaft, the processing error of the second sleeve 16 can be effectively absorbed, and flexible rotation can be ensured, thereby avoiding interference between the second sleeve 16 and the fan head 2 after the fan is assembled due to processing errors or installation errors of the second sleeve 16.

[0116] In any of the above embodiments, optionally, Figure 13 and Figure 14 As shown, the first mounting shaft 20 is arranged on the first side of the fan head 2, and the fan head 2 also includes a second mounting shaft 24, which is arranged on the second side of the fan head 2, and the first side of the fan head 2 and the second side of the fan head 2 are arranged opposite to each other; the pitch bracket 1 includes a second mounting channel 14, and the second mounting shaft 24 can be rotatably mounted in the second mounting channel 14; the fan also includes: a fourth shaft sleeve 6, which is installed in the second mounting channel 14 and is sleeved on the outside of the second mounting shaft 24; a drive assembly 7, which is installed on the pitch bracket 1 and is connected to the second mounting shaft 24 to drive the second mounting shaft 24 to rotate.

[0117] In this embodiment, the fan head 2 is provided with a first mounting shaft 20 and a second mounting shaft 24, which are arranged opposite each other and are rotationally connected to the pitch bracket 1. Furthermore, the pitch bracket 1 is provided with a second mounting channel 14 that cooperates with the second mounting shaft 24. A fourth shaft sleeve 6 is provided between the second mounting shaft 24 and the second mounting channel 14 to reduce wear, corrosion, and scratches on the shafts during rotation. Furthermore, a drive assembly 7 is provided on the pitch bracket 1 and is connected to the second mounting shaft 24 to drive the second mounting shaft 24 to rotate, thereby driving the fan head 2 to rotate, thereby achieving the pitch function of the fan head 2.

[0118] In the above embodiment, optionally, as Figure 13 and Figure 14 As shown, the second mounting shaft 24 is a hollow shaft for allowing the connecting wires between the pitch bracket 1 and the fan head 2 to pass through.

[0119] In this embodiment, the second mounting shaft 24 is a hollow shaft, and the connecting wires between the pitch bracket 1 and the fan head 2 can be routed through the inside of the second mounting shaft 24. This makes it possible to simply and conveniently connect the wires on the pitch bracket 1 to the fan head 2, which not only simplifies the fan structure but also improves the aesthetics of the product.

[0120] In any of the above embodiments, optionally, Figure 13As shown, the driving assembly 7 includes: a driving member 72, mounted on the pitch bracket 1, and the driving member 72 includes an output shaft; a first gear 74, mounted on the output shaft; a second gear 76, mounted on the second mounting shaft 24, capable of engaging with the first gear 74; wherein the driving member 72 can drive the second mounting shaft 24 to rotate through the engagement of the first gear 74 and the second gear 76.

[0121] In this embodiment, the driving force of the driving member 72 is transmitted to the second mounting shaft 24 by means of gear transmission, so that the axis of the second mounting shaft 24 is eccentrically arranged with respect to the axial direction of the output shaft of the driving member 72, so that the hollow shaft of the second mounting shaft 24 is not affected by the position of the driving member 72, and it is convenient to pass the connecting wire.

[0122] In any of the above embodiments, optionally, Figure 12 、 Figure 13 and Figure 14 As shown, a limiting notch 762 is provided on the second gear 76 , and a limiting protrusion 142 is provided in the second installation channel 14 . The limiting protrusion 142 is located in the limiting notch 762 and can rotate in the limiting notch 762 .

[0123] In this embodiment, by matching the limiting protrusion 142 in the second mounting channel 14 with the limiting notch 762 on the second gear 76, the rotation angle of the second gear 76 can be limited, thereby limiting the pitch angle of the fan head 2, ensuring that the fan operates within an effective area and improving the air supply efficiency.

[0124] In any of the above embodiments, optionally, Figure 15 As shown, the fan further includes: a humidifying component 9 , which can generate mist, and a mist outlet of the humidifying component 9 is connected to the second mist passage 3 .

[0125] In this embodiment, the humidifying assembly 9 is used to generate water mist required for humidifying the air, and the water mist generated by the humidifying assembly 9 can be guided to the fan head 2 through the first mist passage 222 and discharged into the air from the fan head 2.

[0126] In any of the above embodiments, optionally, Figure 15 As shown, the fan also includes: a chassis 82; a column tube 84, which is installed on the chassis 82, and the pitch bracket 1 can be rotatably installed on the end of the column tube 84 away from the chassis 82; wherein the humidifying component 9 is installed on the chassis 82 or installed in the column tube 84, and a third mist passage 842 is provided in the column tube 84 to connect the mist outlet and the second mist passage 3.

[0127] In this embodiment, the fan chassis 82 supports the entire fan. The column tube 84 provides the vertical support structure for the entire fan, ensuring that the fan head 2 can be installed at a certain height. Furthermore, a third mist passage 842 is provided within the column tube 84, allowing the mist generated by the humidification assembly 9 to pass through the third mist passage 842 and then enter the second mist passage 3.

[0128] In any of the above embodiments, optionally, Figure 15 As shown, the fan head 2 also includes a front mesh cover 272 and a rear mesh cover 274 connected to each other. The fan also includes: a mist outlet 2722 located on the side of the front mesh cover 272 away from the rear mesh cover 274 and connected to the first mist passage 222.

[0129] In this embodiment, the fan head 2 further includes a front mesh cover and a rear mesh cover that are interconnected. The fan head 2 also includes fan blades, which rotate to generate airflow, which is then blown out through the front mesh cover. The front mesh cover is also provided with a mist outlet. Mist within the first mounting shaft 20 can be discharged through the mist outlet. By placing the mist outlet on the front mesh cover, the airflow from the fan can be blown further away, thereby expanding the fan's humidification range.

[0130] The fan in this application is further described below with reference to a specific embodiment.

[0131] The advantage of the humidifying fan is that it can quickly humidify the entire space. Figure 1 As shown, the overall structure of a humidifying fan in the related art is that the humidifier main unit is integrated into the fan base, the water tank is placed on the base, and a mist outlet is located on the top of the water tank to blow out the mist. However, this humidifying fan also has obvious shortcomings. Specifically, the water mist sprayed by the humidifier at the bottom is sucked into the fan head (fan head 2), where it condenses and causes water intrusion and damage to the electrical components of the fan head (fan head 2).

[0132] To prevent the mist from entering the fan head (fan head 2), the mist is sprayed from the front of the fan head (fan head 2), and the fan airflow quickly carries the mist away from the nozzle. This will prevent water from condensing on the fan head 2 and causing water to enter the electrical components.

[0133] In order to place the aerosol nozzle on the fan head, the fan's pitch and tilt mechanism is required to provide a pipeline for the aerosol to pass through.

[0134] Since the fan head is moving and the bracket part is stationary, the sealing of the aerosol channel is a problem that must be solved. This problem obviously belongs to dynamic sealing technology.

[0135] Except for some special occasions and special sealing types, dynamic seals can be roughly divided into two categories: mechanical seals and packing seals. The packing used in packing seals can be divided into hard materials, soft materials, liquids, gases, etc.

[0136] Since most home appliances are made of plastic, the processing accuracy is basically at the sub-millimeter level, and it is basically impossible to achieve hard material sealing.

[0137] For cost considerations, the fan head (fan head 2) pitch and tilt power motor cannot use a high-torque motor, which cannot overcome the friction between the soft sealing material and the rotating shaft.

[0138] Liquid seals can leak and require high machining precision. Screw seals require a certain amount of back pressure, but the fan's own aerosol pressure is between a few Pa and tens of Pa, which is not enough to provide that back pressure.

[0139] Gas packing seal is also a high-pressure seal and requires a certain back pressure.

[0140] Mechanical seals are an ideal choice for the aerosol connection of the fan head.

[0141] The first is low cost. For pipes with a diameter of 10mm-30mm, the sealing cost is low, which is within the affordable range of fan products.

[0142] Secondly, the structure is simple, which facilitates large-scale assembly and production and has low requirements on workers.

[0143] The third is high sealing reliability. The mechanical seal is an end face seal, and the precision requirements between the dynamic and static pipes are low, and the concentricity requirements between the two are also relatively low. The friction between the first sleeve and the second sleeve is small, and a high torque motor is not required, and it can be matched with the fan pitch motor currently on the market. There is a spring between the first sleeve and the second sleeve to provide positive pressure, so even if there is an axial processing error between the first sleeve and the second sleeve retaining seat, it can also play a good sealing role. The first sleeve and the second sleeve are made of special materials, with no risk of corrosion and rust, and no risk of liquid seal leakage. Liquid leakage also needs to consider the corrosion problem between the sealing liquid and the plastic.

[0144] There are two fulcrums on the fan head, an upper bracket, and a lower bracket connected to the fan head (fan head 2) at the fulcrums.

[0145] like Figure 7 As shown, Figure 7 This is the fan head (fan head 2) with the lower bracket, left bracket cover, and right bracket cover removed. The mist pipe passes through the left pivot, allowing the mist to enter fan head 2. The right pivot houses a tilting motor, which drives the shaft to achieve tilt. The shaft is hollow and has an internal channel for wiring, ensuring both the mist and the wiring flow from the bracket to fan head 2.

[0146] like Figure 6As shown, the left fulcrum part includes a sealing assembly 4, a first sleeve 26, a second sleeve 16 and a left rotating shaft (first mounting shaft 20). The sealing assembly 4 and the first sleeve 26 are end face seals, and the precision requirements between the dynamic and static tubes are low, and the concentricity requirements of the two are also relatively low. The friction between the first sleeve 26 and the second sleeve 16 is small, and a high torque motor is not required, and it can be matched with the fan pitch motor currently on the market. There is a spring between the first sleeve 26 and the second sleeve 16 to provide positive pressure, so even if there is an axial processing error in the first sleeve 26 and the second sleeve 16 retaining seat, it can also play a good sealing role. The first sleeve 26 and the second sleeve 16 are made of special materials, without the risk of corrosion and rust, and there is no risk of liquid seal leakage. Liquid leakage also needs to consider the corrosion problem between the sealing liquid and the plastic.

[0147] like Figure 14 As shown, the rotating shaft (second mounting shaft 24) is fixed on the main bracket of the fan head 2, and the fourth shaft sleeve 6 is installed inside the circular sleeve on the upper bracket. The rotating shaft passes through the fourth shaft sleeve 6, and the large gear (second gear 76) is sleeved on the top of the rotating shaft. The small gear (first gear 74) is installed on the rotating shaft of the oscillating motor. The small gear (first gear 74) and the large gear (second gear 76) are meshed with each other. After the small gear is installed on the oscillating motor shaft, the axis of the oscillating motor (driving member 72) is eccentric to the right fulcrum axis, and space can be reserved in the center of the rotating shaft for passing the wire so that the wire can enter the fan head from this position.

[0148] like Figure 6 and Figure 8 As shown, the left-hand shaft (first mounting shaft 20) is fixed to the main bracket of the fan head 2. A first sleeve 26 is fixed to the left-hand shaft. This sleeve 26 is provided with a stepped inner ring. The function of the first sleeve 26 is to constrain the second sleeve 16 through this stepped inner ring, restricting its rotation to a fixed position. Axial and circumferential clearance exists between the stepped inner ring and the flange on the left-hand shaft, absorbing machining errors and ensuring flexible rotation.

[0149] The left shaft is provided with a first stepped portion 162 which is interference fit with the inner cylindrical surface of the first sleeve 26. The first sleeve 26 can be reliably mounted on the first stepped portion 162 to ensure that no leakage occurs.

[0150] like Figure 3 and Figure 5As shown, the second sleeve 16 is provided with a first stepped portion 162 for connection with the mist pipe (second mist passage 3). The mist pipe is made of a soft material with a certain elasticity and is elastically sleeved on the first stepped portion 162. The elasticity of the elastic tube itself is used to achieve sealing. The second sleeve 16 is hollow, and the other end is provided with a sealing assembly mounting bottom surface and a sealing assembly mounting cylindrical surface. The sealing assembly bottom surface on the sealing assembly 4 contacts the sealing assembly mounting bottom surface, and the sealing assembly cylindrical surface and the sealing assembly mounting cylindrical surface have an interference fit. The second sleeve 16 is fixed to the fan head main bracket. This ensures that the sealing assembly 4 will not leak after installation.

[0151] like Figure 11 As shown, the seal assembly 4 includes a sealing outer sleeve and a friction plate. The sealing outer sleeve is made of a soft material. The first sleeve 26 includes a first sleeve outer sleeve (first sealing ring 266), a spring (elastic member 29), a friction plate (first wear-resistant portion 264), and a spring washer. The outer sleeve of the first sleeve 26 is made of a soft material. The friction plate (first wear-resistant portion 264) and the friction plate (second wear-resistant portion 42) are made of ceramic and graphite, respectively, and both achieve a mechanical seal.

[0152] like Figure 13 As shown, the right fulcrum part includes a shaking motor, a small gear, a large gear, a right rotating shaft and a fourth rotating shaft sleeve 6.

[0153] A small gear is mounted on the motor's shaft, meshing with the outer gear. The gear is fixedly connected to the right shaft, which is in turn fixedly connected to the fan head. When the motor rotates, it drives the right shaft, causing the fan head to pitch and tilt. A boss (limiting protrusion 142) is provided on the upper bracket, and a notch (limiting notch 762) is provided on the gear. These bosses and notch work together to define the pitch range of the fan head.

[0154] An embodiment of the present utility model proposes a fan pitch and shake mechanism. The fan can pitch and shake its head, and has two fulcrums on both sides of its head. The rotating shaft of one of the fulcrums is hollow and is used to pass aerosol; the other fulcrum is provided with a pitch motor to realize the pitch function. The rotating shaft of this fulcrum is also hollow and is used to pass wires.

[0155] The fulcrum through the mist adopts mechanical sealing technology, including a sealing component 4 and a first sleeve 26.

[0156] A gear is mounted on the pitch motor shaft, which meshes with the gear on the rotating shaft to achieve pitch movement.

[0157] The shaking mechanism of the present application sets the rotating shaft of the two fulcrums to be hollow, one side is used for passing mist and the other side is used for passing wires, so that both electricity and mist can reach the fan head, realizing double passage, which is the basic structure of the head mist humidification fan.

[0158] In this specification, the terms "connect," "install," and "fix" should be understood broadly. For example, "connect" can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0159] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0160] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A fan, characterized in that: include: a pitch bracket comprising one of a first mounting axis and a first mounting channel; a fan head, comprising the other of the first mounting shaft and the first mounting channel, wherein a first mist passage is formed inside the first mounting shaft, and the first mounting shaft is rotatably mounted in the first mounting channel; a second mist passage, provided on the pitch bracket and connected to the first installation passage; A sealing assembly is disposed between the first installation channel and the first installation shaft to seal a gap between the first installation channel and the first installation shaft.

2. The fan according to claim 1, wherein A first supporting surface is provided in the first installation channel, and the sealing assembly is abutted and installed between the first supporting surface and the first installation shaft.

3. The fan according to claim 2, characterized in that The first mounting shaft comprises: A first shaft body is rotatably mounted in the first mounting channel, and the first mist passage is provided in the first shaft body; a first shaft sleeve, sleeved and mounted on the first shaft body, capable of rotating along with the first mounting shaft; The sealing assembly is mounted in contact with the first supporting surface and the end surface of the first sleeve, and / or the end of the sealing assembly away from the first supporting surface is sleeved on the first shaft.

4. The fan according to claim 3, characterized in that A baffle portion is provided at one end of the first sleeve close to the first supporting surface, and an end surface of the sealing assembly away from the first supporting surface abuts against the baffle portion.

5. The fan according to claim 4, characterized in that Also includes: The elastic member is sleeved and installed outside the first shaft sleeve, and is compressed and installed between the baffle portion and the fan head.

6. The fan according to claim 5, characterized in that The baffle portion is a wear-resistant part.

7. The fan according to claim 3, characterized in that The first shaft sleeve includes a first sealing ring, which is sleeved and mounted on the first shaft body. The first sealing ring and the first shaft body are in interference fit.

8. The fan according to any one of claims 1 to 7, characterized in that The pitch bracket comprises: A bracket body, wherein the second mist passage is provided in the bracket body; The second sleeve is installed on the bracket body and includes a first step portion and a second step portion connected to each other. A first channel is provided in the first step portion, and a second channel is provided in the second step portion. The first mounting shaft can be rotatably mounted in the second channel. The second mist passage is connected to the first channel. The first mounting channel includes the first channel and the second channel.

9. The fan according to claim 8, characterized in that The second mist passage comprises a mist pipe, the mist pipe is sealed and connected to the first step portion, and the interior of the mist pipe is in communication with the first passage; and / or The second sleeve further comprises a plurality of screw columns for mounting threaded connectors, and the second sleeve is mounted on the bracket body via the plurality of threaded connectors.

10. The fan according to claim 9, characterized in that The mist passing pipe comprises an elastic mist passing pipe, one end of which is sleeved on the first stepped portion and is sealed and connected to the first stepped portion.

11. The fan according to claim 8, characterized in that The fan head also includes: A third shaft sleeve, wherein one end of the second shaft sleeve close to the fan head is limitedly located in the third shaft sleeve.

12. The fan according to claim 11, wherein A first limiting rib is provided in the third sleeve, and a limiting flange is provided on the second sleeve, wherein the limiting flange is located on a side of the first limiting rib close to the fan head; A first gap is provided between the limiting flange and the first limiting rib along the axial direction of the first installation shaft, and a second gap is provided between the limiting flange and the third sleeve along the radial direction of the first installation shaft.

13. The fan according to any one of claims 1 to 7, characterized in that The first mounting shaft is arranged on a first side of the fan head, and the fan head further comprises a second mounting shaft arranged on a second side of the fan head, and the first side of the fan head and the second side of the fan head are arranged opposite to each other; The pitch bracket includes a second mounting channel, and the second mounting shaft is rotatably mounted in the second mounting channel; The fan further comprises: a fourth shaft sleeve, installed in the second installation channel and sleeved outside the second installation shaft; A driving assembly is installed on the pitch bracket and connected to the second installation shaft to drive the second installation shaft to rotate.

14. The fan according to claim 13, wherein The second mounting shaft is a hollow shaft, and is used for allowing the connecting wires between the pitch bracket and the fan head to pass through.

15. The fan according to claim 13, wherein The drive assembly includes: a driving member, mounted on the pitch bracket, the driving member comprising an output shaft; a first gear mounted on the output shaft; a second gear mounted on the second mounting shaft and capable of meshing with the first gear; Wherein, the driving member can drive the second installation shaft to rotate through the engagement of the first gear and the second gear.

16. The fan according to claim 15, characterized in that A limiting notch is provided on the second gear, and a limiting protrusion is provided in the second installation channel. The limiting protrusion is located in the limiting notch and can rotate in the limiting notch.

17. The fan according to any one of claims 1 to 7, characterized in that Also includes: A humidifying component is capable of generating mist, and a mist outlet of the humidifying component is connected to the second mist passage.

18. The fan according to claim 17, characterized in that Also includes: chassis; A column tube is mounted on the chassis, and the pitch bracket is rotatably mounted on an end of the column tube away from the chassis; Wherein, the humidifying component is installed on the chassis or in the column tube, and a third mist passage is provided in the column tube to connect the mist outlet and the second mist passage.

19. The fan according to claim 17, wherein The fan head further includes a front mesh cover and a rear mesh cover connected to each other, and the fan further includes: The mist exhaust port is located on a side of the front mesh cover away from the rear mesh cover and is communicated with the first mist passage.

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