Fan and extractor hood

Abstract

The utility model provides a fan and range hood, including motor, impeller and nozzle subassembly, motor has fixed axle subassembly and outer rotor, and the outer rotor is set up in fixed axle subassembly and is rotatable to fixed axle subassembly, and fixed axle subassembly has the fixed axle of hollow, impeller is connected with the outer rotor, nozzle subassembly is worn in fixed axle, and is fixed through fixed structure, is provided with the blast hole on nozzle subassembly, and the blast hole is towards the impeller setting. In the utility model, nozzle subassembly is fixedly arranged to fixed axle, and nozzle subassembly sprays cleaning medium to the impeller through the blast hole and washes the impeller, on one hand, is favorable to assembly operation, can promote assembly efficiency, on the other hand, can keep steady and reliable state in the cleaning process, makes each connecting part keep good sealing state.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, specifically to a fan and a range hood. Background Technology

[0002] As people's living standards improve, their demands for a better kitchen cooking environment are also increasing. Range hoods have become an indispensable kitchen appliance in modern homes. Range hoods work by creating a negative pressure zone near the air inlet of the fan impeller, drawing cooking fumes into the unit and expelling them outdoors. After a period of use, grease may accumulate on the impeller, increasing its load, clogging the blade gaps, and causing increased noise from the range hood. Simultaneously, the grease adhering to the impeller can breed bacteria and emit unpleasant odors, which may spread into the kitchen and affect people's health.

[0003] To clean the oil stains on the impeller, some range hoods are equipped with movable spray arms. Since movable spray arms involve multiple movable parts, not only is the assembly operation complicated during manufacturing, but after long-term use, the fit accuracy between multiple movable parts may decrease, resulting in some movable parts not moving smoothly or even getting stuck. In addition, it is difficult to ensure that each connection part maintains a good sealing state during their relative movement. Utility Model Content

[0004] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present invention, a fan is provided, the technical solution of which is as follows.

[0005] The fan includes a motor, an impeller, and a nozzle assembly. The motor has a fixed shaft assembly and an outer rotating body. The outer rotating body is fitted onto the fixed shaft assembly and can rotate relative to the fixed shaft assembly. The fixed shaft assembly has a hollow fixed shaft. The impeller is connected to the outer rotating body. The nozzle assembly passes through the fixed shaft and is fixed by a fixing structure. The nozzle assembly is provided with nozzle holes facing the impeller.

[0006] The blower of this utility model has a nozzle assembly that passes through a fixed shaft and is fixed by a fixing structure. The nozzle assembly is fixed relative to the fixed shaft. The nozzle assembly sprays cleaning medium onto the impeller through the nozzle holes to clean the impeller. On the one hand, this facilitates the assembly operation and can improve the assembly efficiency; on the other hand, it can maintain a stable and reliable state during the cleaning process, so that all connection parts maintain a good sealing state.

[0007] For example, the fixing structure has a fixing seat, the fixing seat has a first connecting part and a second connecting part, the first connecting part is connected to the second connecting part, and the first connecting part is fixedly connected to the fixing shaft, and the nozzle assembly is fixedly connected to the second connecting part. With this configuration, the first connecting part is fixedly connected to the fixing shaft, and the nozzle assembly is fixedly connected to the second connecting part, which can improve the stability of the fixed connection between the nozzle assembly and the fixing shaft, and further ensure a good sealing state at the connection part.

[0008] For example, the mounting base also has a curved portion, and the second connecting portion is connected to the first connecting portion through the curved portion, with the second connecting portion and the first connecting portion having different connection directions. This arrangement allows the second connecting portion and the first connecting portion to have different connection directions, facilitating connection from different directions. On the one hand, it satisfies the requirement for axial connection with the fixed shaft; on the other hand, it satisfies the requirement for the nozzle assembly to extend radially outward from the impeller, thereby ensuring that the nozzle assembly sprays cleaning media towards the impeller, achieving a cleaning effect on the impeller.

[0009] For example, the fixing seat encloses a receiving cavity, and the fixing structure also has an elbow located within the receiving cavity. The elbow has a first connector and a second connector. The first connector is connected to a cleaning medium supply pipe, and the second connector is connected to the first connector. The nozzle assembly has a connecting end that passes through the second connecting portion and connects to the second connector. This configuration, where the first connector is connected to the cleaning medium supply pipe and the connecting end of the nozzle assembly passes through the second connecting portion and connects to the second connector, not only improves the stability of the nozzle assembly's fixed connection relative to the fixed shaft but also enhances the sealing performance of each connection point.

[0010] For example, the mounting base includes a base and a cover. The base has an enclosure and a semi-enclosure. The receiving cavity has a first cavity and a second cavity. The first cavity is formed by the enclosure, and the second cavity is formed by the semi-enclosure and the cover. The first connector is located in the first cavity, and the second connector is located in the second cavity. This configuration strengthens the fixation of the elbow by the base and the cover, improving the stability of the fixed connection between the nozzle assembly and the fixed shaft. Furthermore, the separate configuration of the cover and the base facilitates the installation or removal of the elbow, making maintenance or cleaning easier.

[0011] For example, the semi-enclosed body has a first semi-enclosed portion and a second semi-enclosed portion, with the first semi-enclosed portion located between the enclosing body and the second semi-enclosed portion. The cover body has a first cover portion and a second cover portion, with the first cover portion and the first semi-enclosed portion enclosing each other to form a second cavity, and the second cover portion and the second semi-enclosed portion enclosing each other to form a second connecting portion. With this configuration, the second connector portion is located inside the second cavity, and the nozzle assembly portion passes through the second connecting portion and connects to the second connector portion, which can improve the stability of the fixed connection between the nozzle assembly and the fixed shaft.

[0012] For example, the second connecting portion is configured as a cavity structure with a third chamber. The nozzle assembly has a mating pipe section located within the third chamber, and a locking part is provided on the mating pipe section. A locking engagement part is provided on the second cover portion or the second half-enclosure portion, and the locking part engages with the locking engagement part. With this configuration, the mating pipe section of the nozzle assembly is located within the third chamber, and the engagement between the locking part and the locking engagement part not only enables the positioning of the nozzle assembly but also further improves the stability of the fixed connection of the nozzle assembly.

[0013] For example, the fixed shaft has a through-hole, through which the cleaning medium supply pipe passes, with one end of the cleaning medium supply pipe connected to the first connector and one end of the fixed shaft connected to the enclosure. This arrangement places the cleaning medium supply pipe within the through-hole, facilitating its installation. The fixed shaft also protects the cleaning medium supply pipe, preventing it from being exposed and easily damaged. Furthermore, the structure is compact, saving space.

[0014] For example, the first connecting portion forms a first connector, and the second connecting portion forms a second connector. The second connector and the first connector have different connection directions, and the first connector is connected to a cleaning medium supply pipe. This configuration ensures that, on the one hand, the nozzle assembly is fixedly connected to the second connector, maintaining a stable and reliable state during use, ensuring good sealing at all connection points, and simplifying assembly operations, thus improving assembly efficiency. On the other hand, the different connection directions of the second connector and the first connector not only meet the requirement of axial connection between the nozzle assembly and the fixed shaft but also the requirement of radial outward extension of the nozzle assembly from the impeller, thereby ensuring that the nozzle assembly sprays cleaning medium towards the impeller, achieving a cleaning effect on the impeller.

[0015] For example, the fan also includes a support base, the fixed shaft is fixed to the support base, and the fixing structure also includes a bracket, with the nozzle assembly supported on the support base via the bracket. This configuration ensures that, on the one hand, the fixed shaft is fixed to the support base, and the motor and impeller are supported by the support base, guaranteeing that the impeller can rotate relative to the fixed shaft with the external rotating body; on the other hand, the nozzle assembly being supported on the support base via the bracket further enhances the stability of the fixed connection of the nozzle assembly.

[0016] For example, the fixed shaft has a accommodating channel through which the cleaning medium supply pipe passes, and one end of the cleaning medium supply pipe is connected to the first connector. This arrangement places the cleaning medium supply pipe within the accommodating channel, facilitating its installation. The fixed shaft also protects the cleaning medium supply pipe, preventing it from being exposed and easily damaged. Furthermore, the structure is compact, saving space.

[0017] For example, the nozzle assembly includes a first section and a second section, the second section being connected to the first section and perpendicular to the first section. The end of the first section away from the second section is mounted on a fixed structure, and the nozzle is located on the second section. This configuration not only effectively sprays the cleaning medium onto the impeller through the nozzle, ensuring the cleaning effect, but also avoids excessive occupation of space in the axial direction of the impeller.

[0018] For example, there are multiple nozzles, which are arranged sequentially and at intervals on the second section. This arrangement, by providing multiple nozzles, increases the cleaning range of the impeller and further improves the cleaning effect.

[0019] For example, there is a gap L between every two spray holes, and the gap L is 0mm to 60mm. With this setting, when the gap L is within this range, the cleaning medium can be effectively sprayed onto the impeller through the spray holes, ensuring the cleaning effect.

[0020] For example, the nozzle assembly includes a first nozzle and a second nozzle, the fixing structure includes a first fixing structure and a second fixing structure, and the fixing shaft has a first shaft end and a second shaft end. The first nozzle is connected to the first shaft end through the first fixing structure, and the second nozzle is connected to the second shaft end through the second fixing structure. This configuration, on the one hand, ensures that the first nozzle is fixed relative to the first shaft end and the second nozzle is fixed relative to the second shaft end, maintaining a stable and reliable state during use and ensuring good sealing at all connection points; on the other hand, providing two nozzles increases the cleaning range of the impeller, further improving the cleaning effect.

[0021] For example, the impeller is divided into a first part and a second part by a partition plate. The nozzles on the first nozzle are arranged facing the first part, and the nozzles on the second nozzle are arranged facing the second part. With this arrangement, the first nozzle cleans the first part, and the second nozzle cleans the second part, which can improve the cleaning effect.

[0022] For example, the impeller has a mounting cavity, and both the first nozzle and the first fixing structure are located within the mounting cavity. Thus, the entire fan occupies less space, saving internal space when applied to a range hood. Furthermore, the first nozzle does not need to penetrate the impeller's air inlet, reducing obstruction of the impeller's air inlet and minimizing the impact on air intake performance.

[0023] According to one aspect of this utility model, a range hood is provided, comprising a housing, a cleaning medium supply device, and a fan as described above. The fan is disposed inside the housing. The cleaning medium supply device includes a cleaning medium outlet, and a cleaning medium supply port is provided at the end of the spray nozzle assembly away from the spray hole. The cleaning medium outlet is connected to the cleaning medium supply port to supply cleaning medium to the spray nozzle assembly. Since the fan described above has the aforementioned beneficial effects, the range hood including the fan described above also has the aforementioned beneficial effects, which will not be elaborated further here.

[0024] This utility model description introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0025] The advantages and features of this utility model will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0026] The following drawings, which are incorporated herein by reference as part of this invention, are provided for understanding the invention. The drawings illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention. In the drawings,

[0027] Figure 1 This is a perspective view of an exemplary range hood according to the present invention;

[0028] Figure 2 for Figure 1 A 3D view of the fan shown;

[0029] Figure 3 for Figure 1 The image shown is a 3D view of the fan from another angle;

[0030] Figure 4 for Figure 3 The cross-sectional view of the fan shown;

[0031] Figure 5 for Figure 3 The image shows a cross-sectional view of the fan after the volute has been removed.

[0032] Figure 6 for Figure 3 A 3D view of part of the fan shown;

[0033] Figure 7 for Figure 6 A 3D view of the motor shown;

[0034] Figure 8 for Figure 6 A three-dimensional view of the base shown;

[0035] Figure 9 for Figure 6 A 3D view of the elbow shown;

[0036] Figure 10 for Figure 6 A perspective view of the nozzle assembly shown;

[0037] Figure 11 for Figure 5 The diagram shows a three-dimensional view of the cover.

[0038] The above figures include the following reference numerals:

[0039] 1. Fan; 10. Motor; 110. Fixed shaft assembly; 111. Fixed shaft; 1111. Mating section; 1111a. Abutting surface; 112. Accommodation channel; 113. First shaft end; 114. Second shaft end; 120. Outer rotating body; 121. Fixed flange; 20. Impeller; 210. Dividing plate; 220. First part; 230. Second part; 240. Mounting cavity; 250. Top plate; 260. Base plate 30. Nozzle assembly; 310. Nozzle; 320. Connecting end; 330. Matching pipe section; 331. Locking part; 340. First section; 350. Second section; 360. First nozzle; 370. Second nozzle; 380. Cleaning medium supply port; 40. Fixing structure; 410. Fixing base; 411. First connecting part; 412. Second connecting part; 4121. Third cavity; 413. Bend; 414. Reception Cavity; 4141, First cavity; 4142, Second cavity; 415, Base; 4151, Enclosing body; 4151a, First fixing hole; 4152, Semi-enclosing body; 4152a, First semi-enclosing portion; 4152b, Second semi-enclosing portion; 4153, First flange; 4153a, First through hole; 416, Cover body; 4161, First cover portion; 4162, Second cover portion; 4163, Second flange; 4163a 417. Second through hole; 418. Locking engagement part; 419. First connector; 420. Second connector; 421. Elbow; 422. First connector part; 422. Second connector part; 430. Bracket; 431. Support part; 432. Sleeving part; 440. First fixing structure; 450. Second fixing structure; 50. Cleaning medium supply pipe; 60. Support base; 70. Volute; 8. Box body; 9. Cleaning medium supply device. Detailed Implementation

[0040] In the following description, numerous details are provided to enable a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the present invention, which may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well-known in the art have not been described in detail.

[0041] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this utility model are described in detail below; however, in addition to these detailed descriptions, this utility model may have other embodiments.

[0042] An embodiment of this utility model provides a fan. This fan can be applied to range hoods. The following will describe in detail a fan according to an embodiment of this utility model with reference to the accompanying drawings.

[0043] See also Figures 1 to 4 The fan 1 may include a motor 10, an impeller 20, and a nozzle assembly 30. In one embodiment of the present invention, the motor 10 may be an external rotor motor. The motor 10 may have a fixed shaft assembly 110 and an outer rotating body 120. The outer rotating body 120 is sleeved on the fixed shaft assembly 110 and is rotatable relative to the fixed shaft assembly 110. The fixed shaft assembly 110 may have a hollow fixed shaft 111. The impeller 20 may be connected to the outer rotating body 120. Understandably, when the outer rotating body 120 rotates, the impeller 20 rotates with the outer rotating body 120 relative to the fixed shaft 111. The nozzle assembly 30 may pass through the fixed shaft 111 and be fixed by a fixing structure 40. The nozzle assembly 30 may be provided with a nozzle hole 310, which may face the impeller 20.

[0044] The blower 1 of this utility model has a nozzle assembly 30 that can be inserted through a fixed shaft 111 and fixed by a fixing structure 40. The nozzle assembly 30 sprays cleaning medium onto the impeller 20 through the nozzle 310 to clean the impeller 20. On the one hand, this is beneficial to the assembly operation and can improve the assembly efficiency; on the other hand, it can maintain a stable and reliable state during the cleaning process, so that all connection parts maintain a good sealing state.

[0045] See again Figures 1 to 4The fixing structure 40 may have a fixing seat 410. The fixing seat 410 may have a first connecting part 411 and a second connecting part 412. The first connecting part 411 and the second connecting part 412 are connected. It should be noted that the first connecting part 411 and the second connecting part 412 can be directly connected. The first connecting part 411 and the second connecting part 412 can also be indirectly connected. The first connecting part 411 can be fixedly connected to the fixing shaft 111. The nozzle assembly 30 can be fixedly connected to the second connecting part 412. In this way, the first connecting part 411 is fixedly connected to the fixing shaft 111, and the nozzle assembly 30 is fixedly connected to the second connecting part 412, which can improve the stability of the fixed connection between the nozzle assembly 30 and the fixing shaft 111, and further ensure a good sealing state at the connection part.

[0046] See also Figure 4 and Figure 5 The fixing base 410 may also have a bent portion 413. The second connecting portion 412 can be connected to the first connecting portion 411 through the bent portion 413. The second connecting portion 412 and the first connecting portion 411 may have different connection directions. In one embodiment of the present invention, the connection direction of the first connecting portion 411 may be the same as the axial direction of the fixing shaft 111 (e.g., Figure 5 The direction of the second connecting part 412 can be the same as the radial direction of the fixed shaft 111 (e.g., in the direction of XX). Figure 5 The second connecting part 412 and the first connecting part 411 have different connection directions, which facilitates connection from different directions. On the one hand, it meets the requirement of axial connection with the fixed shaft 111; on the other hand, it meets the requirement of the nozzle assembly 30 extending radially outward from the impeller 20, thus ensuring that the nozzle assembly 30 sprays cleaning medium towards the impeller 20 and achieves the cleaning effect on the impeller 20. Understandably, since the outer rotating body 120 is sleeved outside the fixed shaft 111 and the impeller 20 is connected to the outer rotating body 120, the radial direction of the fixed shaft 111 can be the same as the radial direction of the impeller 20, that is, the radial direction of the impeller 20 can also be the YY direction.

[0047] See also Figure 4 , Figure 5 and Figure 9The fixing base 410 can enclose and form a receiving cavity 414. The fixing structure 40 can also have an elbow 420 located within the receiving cavity 414. The elbow 420 can have a first connector portion 421 and a second connector portion 422. The first connector portion 421 can be connected to a cleaning medium supply pipe 50. The second connector portion 422 can communicate with the first connector portion 421. The nozzle assembly 30 can have a connecting end 320, which can pass through the second connecting portion 412 and connect to the second connector portion 422. In some embodiments, the first connector portion 421 can have a sealing structure, such as a sealing ring or a sealing gasket, which can effectively prevent the cleaning medium from leaking out at the connection between the first connector portion 421 and the cleaning medium supply pipe 50, ensuring the sealing of the connection. The first connector 421 may also have a locking claw, which can hold the cleaning medium supply pipe 50 in place, thereby ensuring the stability of the connection between the cleaning medium supply pipe 50 and the first connector 421; alternatively, the first connector 421 may have an internal thread structure, and the outer wall of the cleaning medium supply pipe 50 may have an external thread structure, which together ensures the stability of the connection between the cleaning medium supply pipe 50 and the first connector 421. The second connector 422 may have a sealing structure, such as a sealing ring or a sealing gasket, which can effectively prevent the cleaning medium from leaking out at the connection between the second connector 422 and the nozzle assembly 30, ensuring the sealing of the connection. The second connector 422 may also have a locking claw, which can hold the nozzle assembly 30 in place, thereby ensuring the stability of the connection between the nozzle assembly 30 and the second connector 422. Alternatively, the second connector 422 may have an internal thread structure, and the outer wall of the cleaning medium supply pipe 50 may have an external thread structure. The internal and external thread structures can ensure the stability of the connection between the cleaning medium supply pipe 50 and the second connector 422. The bent portion between the first connector 421 and the second connector 422 may be arc-shaped to reduce the impact of the cleaning medium supplied by the cleaning medium supply pipe 50 on the bent portion of the elbow 420, thereby improving the lifespan of the elbow 420. In this way, the first connector 421 connects to the cleaning medium supply pipe 50, and the connecting end 320 of the nozzle assembly 30 passes through the second connector 412 and connects to the second connector 422. This not only improves the stability of the fixed connection between the nozzle assembly 30 and the fixed shaft 111, but also improves the sealing performance of each connection part.

[0048] See also Figure 4 , Figure 5 , Figure 6 , Figure 8 and Figure 11The fixing base 410 may include a base 415 and a cover 416. The base 415 may have an enclosure 4151 and a semi-enclosure 4152. The receiving cavity 414 may have a first cavity 4141 and a second cavity 4142. The first cavity 4141 may be formed by enclosure 4151. The second cavity 4142 may be formed by enclosure 4152 and cover 416. A first connector 421 may be located within the first cavity 4141. A second connector 422 may be located within the second cavity 4142. In one embodiment of this utility model, the edge of the semi-enclosure 4152 may extend with a first flange 4153, and the edge of the cover 416 may extend with a second flange 4163. A first through hole 4153a may be provided on the first flange 4153, and a second through hole 4163a may be provided on the second flange 4163. By sequentially passing fasteners through the first through hole 4153a and the second through hole 4163a, the semi-enclosure 4152 and the cover 416 are connected. This not only ensures the stability of the connection between the semi-enclosure 4152 and the cover 416, but also facilitates the installation or disassembly of the semi-enclosure 4152 and the cover 416, making cleaning or maintenance easier. The fasteners may be screws or bolts, etc. Of course, the semi-enclosure 4152 and the cover 416 can also be detachably connected by snap-fit ​​connections, threaded connections, or other connection methods. Thus, by strengthening the fixation of the elbow 420 through the base 415 and the cover 416, the stability of the fixed connection between the nozzle assembly 30 and the fixed shaft 111 can be improved. Furthermore, the cover 416 and the base 415 are set separately, which facilitates the installation or removal of the elbow 420 and makes it convenient for maintenance or cleaning.

[0049] See again Figure 4 , Figure 5 , Figure 6 , Figure 8 and Figure 11 The semi-enclosed body 4152 may have a first semi-enclosed portion 4152a and a second semi-enclosed portion 4152b. The first semi-enclosed portion 4152a may be located between the enclosing body 4151 and the second semi-enclosed portion 4152b. The cover body 416 may have a first cover portion 4161 and a second cover portion 4162. The first cover portion 4161 and the first semi-enclosed portion 4152a enclose each other to form a second cavity 4142. The second cover portion 4162 and the second semi-enclosed portion 4152b enclose each other to form a second connecting portion 412. Thus, the second connector portion 422 is located inside the second cavity 4142, and the nozzle assembly 30 partially passes through the second connecting portion 412 and connects to the second connector portion 422, which can improve the stability of the fixed connection between the nozzle assembly 30 and the fixed shaft 111. Understandably, since the outer rotating body 120 is sleeved outside the fixed shaft 111 and the impeller 20 is connected to the outer rotating body 120, the axial direction of the fixed shaft 111 can be the same as the axial direction of the impeller 20, that is, the axial direction of the impeller 20 can also be the XX direction.

[0050] See again Figure 4 , Figure 5 , Figure 6 , Figure 8 and Figure 11 The second connecting portion 412 can be configured as a cavity structure with a third cavity 4121. The nozzle assembly 30 can have a mating pipe section 330 located within the third cavity 4121. It should be noted that, since a portion of the nozzle assembly 30 can pass through the second connector portion 422, the cross-section of the second connector portion 422 is larger than that of the nozzle assembly 30, the second connector portion 422 is located in the second cavity 4142, and the mating pipe section 330 of the nozzle assembly 30 is located in the third cavity 4121. The cross-section of the third cavity 4121 can be smaller than that of the second cavity 4142, and the cross-section of the third cavity 4121 can be slightly larger than that of the nozzle assembly 30. A locking portion 331 can be provided on the mating pipe section 330. A locking engagement portion 417 can be provided on the second cover portion 4162 or the second half-enclosure portion 4152b. The locking portion 331 can engage with the locking engagement portion 417. In this embodiment of the invention, the locking part 331 can be a recessed groove into the nozzle assembly 30, and the locking engagement part 417 can be a protruding block protruding from the second cover part 4162. This structure is simple and easy to manufacture. Of course, the locking part 331 can also be a protrusion, and the locking engagement part 417 can also be a groove, etc., as long as it can restrict the movement of the nozzle assembly 30 in the radial direction of the fixed shaft 111. In this way, the mating pipe section 330 of the nozzle assembly 30 is located in the third cavity 4121. By locking the locking part 331 and the locking engagement part 417, not only can the positioning of the nozzle assembly 30 be achieved, but the radial direction of the nozzle assembly 30 relative to the fixed shaft 111 can also be further improved (e.g., ...). Figure 5 Stability of the fixed connection in the YY direction.

[0051] See also Figures 5 to 8 The fixed shaft 111 can pass through the receiving channel 112. The cleaning medium supply pipe 50 can pass through the receiving channel 112, and one end of the cleaning medium supply pipe 50 can be connected to the first connector 421. One end of the fixed shaft 111 can be connected to the enclosure 4151, which can improve the stability of the fixed connection between the fixed shaft 111 and the fixed structure 40. It should be noted that one end of the fixed shaft 111 and one end of the cleaning medium supply pipe 50 described here can be located on the same side of the fixed shaft 111. In this way, the cleaning medium supply pipe 50 is placed in the receiving channel 112, which facilitates the installation of the cleaning medium supply pipe 50, and the fixed shaft 111 can protect the cleaning medium supply pipe 50, avoiding the problem of the cleaning medium supply pipe 50 being exposed and easily damaged. At the same time, the structure is compact and saves space.

[0052] In one embodiment of this utility model, the enclosure 4151 can be sleeved on one end of the fixed shaft 111. The fixed shaft 111 can form a mating section 1111 located within the first cavity 4141. An abutment plane 1111a can be provided on the outer wall of the mating section 1111, and a first fixing hole 4151a can be provided on the enclosure 4151. Fasteners can pass through the first fixing hole 4151a and abut against the abutment plane 1111a. Alternatively, a second fixing hole (not shown in the figure) can be provided on the mating section 1111, and fasteners can pass through the first fixing hole 4151a and the second fixing hole in sequence. This ensures the stability of the fixed connection between the fixed shaft 111 and the fixed structure 40, and the fixed shaft 111 can be installed and disassembled relative to the enclosure, facilitating cleaning or maintenance. Fasteners can be screws or bolts, etc. In embodiments not shown in the figure, the enclosure 4151 and the fixed shaft 111 can also be connected by welding, snap-fit ​​connection or other connection methods, as long as the stability of the connection between the enclosure 4151 and the fixed shaft 111 can be guaranteed.

[0053] See also Figure 1 , Figure 2 and Figure 4 The first connecting portion 411 can form a first connector 418. The second connecting portion 412 can form a second connector 419. The second connector 419 and the first connector 418 can have different connection directions. The first connector 418 can be connected to a cleaning medium supply pipe 50. Specifically, the fixing base 410 can be a two-way pipe connector. The connection direction of the first connector 418 can be the same as the axial direction of the fixing shaft 111 (e.g., ...). Figure 5 The second connector 419 can be connected in the same direction as the radial direction of the fixed shaft 111 (e.g., in the direction of XX). Figure 5(YY direction) in the same direction. In some embodiments, the first connector 418 may have a sealing structure, such as a sealing ring or a sealing gasket, which can effectively prevent the cleaning medium from leaking out at the connection between the first connector 418 and the cleaning medium supply pipe 50, ensuring the sealing of the connection. The first connector 418 may also have a claw, which can hold the cleaning medium supply pipe 50 in place, thereby ensuring the stability of the connection between the cleaning medium supply pipe 50 and the first connector 418; or, the first connector 418 may have an internal thread structure, and the outer wall surface of the cleaning medium supply pipe 50 may have an external thread structure, which can ensure the stability of the connection between the cleaning medium supply pipe 50 and the first connector 418 through the internal and external thread structures. The second connector 419 may have a sealing structure, such as a sealing ring or a sealing gasket, which can effectively prevent the cleaning medium from leaking out at the connection between the second connector 419 and the nozzle assembly 30, ensuring the sealing of the connection. The second connector 419 may also have a locking claw that can hold the nozzle assembly 30 in place, thereby ensuring the stability of the connection between the nozzle assembly 30 and the second connector 419. Alternatively, the second connector 419 may have an internal thread structure, and the outer wall of the cleaning medium supply pipe 50 may have an external thread structure. The internal and external thread structures can ensure the stability of the connection between the cleaning medium supply pipe 50 and the second connector 419. Of course, the fixing base 410 may also be a tee connector, a four-way connector, etc., to suit different scenarios. Thus, on the one hand, the nozzle assembly 30 is fixedly connected to the second connector 419, which can maintain a stable and reliable state during the use of the nozzle assembly 30, so that each connection part can maintain a good sealing state, and the assembly operation is simple, improving the assembly efficiency; on the other hand, the second connector 419 and the first connector 418 have different connection directions, which not only meets the requirement of axial connection between the nozzle assembly 30 and the fixed shaft 111, but also meets the requirement of the nozzle assembly 30 extending radially outward from the impeller 20, thereby ensuring that the nozzle assembly 30 sprays cleaning medium towards the impeller 20 and achieves the cleaning effect on the impeller 20.

[0054] See also Figure 1 , Figure 2 , Figure 4 and Figure 5The fan 1 may also include a support base 60. A fixed shaft 111 may be fixed to the support base 60. The fixing structure 40 may also include a bracket 430. The nozzle assembly 30 may be supported on the support base 60 via the bracket 430. In one embodiment of this invention, the fan 1 may also include a volute 70. The support base 60 has support legs extending at intervals in the circumferential direction. The support legs may be connected to the volute 70 and fixed to the support base 60 via the fixed shaft 111, so that the support base 60 can support the motor 10 and the impeller 20. The bracket 430 may have a support portion 431 and a sleeve portion 432. The support portion 431 is connected to the support base 60, and the sleeve portion 432 is sleeved on the nozzle assembly 30, thereby ensuring the stability of the fixed connection between the nozzle assembly 30 and the fixed shaft 111 in the axial direction of the fixed shaft 111. Of course, the support base 60 may also have other structural forms, as long as it can support the motor 10 and the impeller 20. The bracket 430 can also be of other structural forms, as long as it can ensure the stability of the connection between the nozzle assembly 30 and the fixed shaft 111. In this way, on the one hand, the fixed shaft 111 is fixed to the support base 60, and the support base 60 supports the motor 10 and the impeller 20, which can ensure that the impeller 20 can rotate relative to the fixed shaft 111 with the outer rotating body 120; on the other hand, the nozzle assembly 30 is supported on the support base 60 by the bracket 430, which can further improve the stability of the fixed connection of the nozzle assembly 30.

[0055] See also Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7 The fixed shaft 111 can pass through the receiving channel 112. The cleaning medium supply pipe 50 passes through the receiving channel 112, and one end of the cleaning medium supply pipe 50 can be connected to the first connector 418. In this way, placing the cleaning medium supply pipe 50 in the receiving channel 112 facilitates the installation of the cleaning medium supply pipe 50, and the fixed shaft 111 can protect the cleaning medium supply pipe 50, avoiding the problem of the cleaning medium supply pipe 50 being exposed and easily damaged. At the same time, the structure is compact and saves space.

[0056] See also Figure 1 , Figure 2 , Figure 3 and Figure 10The nozzle assembly 30 may include a first section 340 and a second section 350. The second section 350 may be connected to the first section 340 and may be perpendicular to the first section 340. The end of the first section 340 away from the second section 350 may be mounted on the fixed structure 40. The nozzle 310 may be mounted on the second section 350. Understandably, the second section 350 is parallel to the axial direction of the impeller 20 and is located within the mounting cavity 240 formed by the impeller 20. The nozzle 310 faces the inner wall of the impeller 20. Since the impeller 20 is a wheel composed of multiple blades, when the impeller 20 rotates, the cleaning medium sprayed from the nozzle 310 towards the inner wall of the impeller 20 can clean each blade of the impeller 20. That is, when the fan 1 is used to perform the cleaning process of the range hood, when the impeller 20 rotates with the outer rotating body 120, the cleaning medium sprayed from the nozzle 310 can clean each blade of the impeller 20. In this way, the cleaning medium is effectively sprayed onto the impeller 20 through the nozzle 310, ensuring the cleaning effect, while also avoiding excessive occupation of the space in the axial direction of the impeller 20. When the second section 350 is perpendicular to the first section 340, it facilitates manufacturing. Of course, the second section 350 can also have a certain angle with the first section 340; or, the nozzle assembly 30 can be divided into multiple sections to suit different scenarios.

[0057] See Figure 10 The nozzle 310 can be multiple, and these nozzles 310 can be sequentially and spaced apart on the second section 350. For example, there can be three, five, or six nozzles 310. In one embodiment of this invention, there can be six nozzles 310. Thus, by providing multiple nozzles 310, the cleaning range of the impeller 20 can be increased, further improving the cleaning effect. Of course, there can also be only one nozzle 310, which is sufficient to effectively spray the cleaning medium onto the impeller 20.

[0058] See again Figure 10 There can be a gap L between every two spray holes 310, which can be 0mm to 60mm, for example, 0mm, 10mm, 40mm, 60mm, etc. When the gap L is within this range, the cleaning medium can be effectively sprayed onto the impeller 20 through the spray holes 310, ensuring the cleaning effect. The gap L can be related to the length of the second segment 350, and can be adjusted accordingly. In one embodiment of this invention, the gap L can be 10mm, which effectively sprays the cleaning medium onto the impeller 20 through the spray holes 310, ensuring the cleaning effect.

[0059] See again Figure 4 and Figure 5The nozzle assembly 30 may include a first nozzle 360 ​​and a second nozzle 370. The fixing structure 40 may include a first fixing structure 440 and a second fixing structure 450. The fixing shaft 111 may have a first shaft end 113 and a second shaft end 114. The first nozzle 360 ​​can be connected to the first shaft end 113 through the first fixing structure 440. The second nozzle 370 can be connected to the second shaft end 114 through the second fixing structure 450. Thus, on the one hand, the first nozzle 360 ​​is fixedly disposed relative to the first shaft end 113, and the second nozzle 370 is fixedly disposed relative to the second shaft end 114, ensuring that the first nozzle 360 ​​and the second nozzle 370 maintain a stable and reliable state during use, and ensuring that each connection part maintains a good sealing state; on the other hand, providing two nozzles can increase the cleaning range of the impeller 20, further improving the cleaning effect.

[0060] See again Figure 4 and Figure 5 The impeller 20 can be divided into a first part 220 and a second part 230 by the partition plate 210. It should be noted that the impeller 20 is divided into two parts by the partition plate 210, each part having an air inlet. The fan 1 accordingly forms a double-sided air inlet fan, with one side being the main air inlet side and the other side being the auxiliary air inlet side. This improves air intake efficiency. Figure 5 As shown, the fan 1 has a secondary air intake side on the side where the chassis 260 is located, and a primary air intake side on the side where the top plate 250 is located. The nozzles 310 on the first nozzle 360 ​​can be positioned towards the first section 220. That is, the first nozzle 360 ​​is positioned close to the primary air intake side. The nozzles 310 on the second nozzle 370 can be positioned towards the second section 230. That is, the second nozzle 370 is positioned close to the secondary air intake side. In this way, the first nozzle 360 ​​cleans the first section 220, and the second nozzle 370 cleans the second section 230, which improves the cleaning effect.

[0061] In one embodiment of this utility model, the outer rotating body 120 can be connected to the partition plate 210. The outer edge of the outer rotating body 120 may extend with a fixed flange 121, which can be connected to the partition plate 210 via fasteners. The fasteners can be screws or bolts, etc. Alternatively, the outer rotating body 120 can be connected to the partition plate 210 via welding, snap-fit ​​connection, or other methods. This ensures that the impeller 20 rotates with the outer rotating body 120 and guarantees the stability of the connection between the impeller 20 and the outer rotating body 120.

[0062] See again Figure 4 and Figure 5The impeller 20 has a mounting cavity 240, and the first nozzle 360 ​​and the first fixing structure 440 are both located within the mounting cavity 240. Thus, the entire fan 1 occupies less space, saving internal space when applied to a range hood. Furthermore, the first nozzle 360 ​​does not need to penetrate the air inlet of the impeller 20, reducing obstruction at the air inlet and minimizing the impact on air intake performance.

[0063] In an embodiment of a dual-inlet fan, the impeller 20 can be divided into a first part 220 and a second part 230 by a partition plate 210. The first shaft end 113 of the fixed shaft 111 can be located within the first part 220, and the second shaft end 114 can be located within the second part 230. The first nozzle 360 ​​is connected to the first shaft end 113 via a first fixing structure 440. The second nozzle 370 is connected to the second shaft end 114 via a second fixing structure 450. The first fixing structure 440 may include a base 415 and a cover 416. The base 415 may have an enclosure 4151 and a semi-enclosure 4152. The enclosure 4151 encloses to form a first cavity 4141. The semi-enclosure 4152 and the cover 416 enclose to form a second cavity 4142. An elbow 420 may be provided within the base 415 and the cover 416. The first connector 421 of the elbow 420 may be located within the first cavity 4141. The second connector 422 of the elbow 420 can be located within the second cavity 4142. The semi-enclosed body 4152 can have a first semi-enclosed portion 4152a and a second semi-enclosed portion 4152b. The first semi-enclosed portion 4152a can be located between the enclosing body 4151 and the second semi-enclosed portion 4152b. The cover 416 can have a first cover portion 4161 and a second cover portion 4162. The first cover portion 4161 and the first semi-enclosed portion 4152a can enclose to form the second cavity 4142. The second cover portion 4162 and the second semi-enclosed portion 4152b can enclose to form the third cavity 4121. The first nozzle 360 ​​can have a connecting end 320, which can pass through the third cavity 4121 and connect to the second connector 422. The first nozzle 360 ​​can have a mating pipe section 330 located within the third cavity 4121, and a locking part 331 can be provided on the mating pipe section 330. A locking engagement part 417 may be provided on the second cover 4162. The locking part 331 can engage with the locking engagement part 417. The fixing shaft 111 can pass through the receiving channel 112. The cleaning medium supply pipe 50 can pass through the receiving channel 112, and one end of the cleaning medium supply pipe 50 can be connected to the first connector part 421. One end of the fixing shaft 111 can be connected to the enclosure body 4151. The other end of the fixing shaft 111 can be fixed to the support base 60. The second fixing structure 450 may include a three-way connector and a bracket 430. The three-way connector may include a first connector 418, a second connector 419 and a third connector. The first connector 418 can be connected to the other end of the cleaning medium supply pipe 50, the second connector 419 can be connected to the second nozzle 370, and the third connector can be connected to the cleaning medium supply device 9. The cleaning medium is supplied to the second nozzle 370 through an external supply pipe, and the cleaning medium supplied through the external supply pipe flows to the first nozzle 360 ​​through the cleaning medium supply pipe 50. The second nozzle 370 can be supported on the support base 60 by the bracket 430. A cleaning medium supply port 380 can be provided at the end of the cleaning medium supply pipe 50 near the tee connector.Thus, since the first nozzle 360 ​​is far from the support base 60, the above-mentioned fixing method ensures the stability of the first nozzle 360 ​​relative to the fixed axis 111 and facilitates assembly. Furthermore, since the second nozzle 370 is supported by the support base 60, the above-mentioned fixing method not only ensures the stability of the second nozzle 370 relative to the fixed axis 111 but also simplifies the structure and saves costs. Of course, the first fixing structure 440 and the second fixing structure 450 can also adopt any suitable method described above to suit different scenarios. The cleaning medium supply port 380 can also be located in other positions depending on the application scenario.

[0064] In an embodiment not shown in the figure, when the fan 1 is a dual-inlet fan, the first nozzle 360 ​​can be provided only on the side near the top plate 250 (i.e., the main air inlet side), and the first nozzle 360 ​​is fixed by a first fixing structure 440 having a bend 413. Of course, it is also possible to provide the aforementioned second fixing structure 450 only on the main air inlet side. In this way, on the one hand, it is beneficial to the assembly operation and can improve the assembly efficiency; on the other hand, it can maintain a stable and reliable state during the cleaning process, so that all connection parts maintain a good sealing state.

[0065] In an embodiment not shown in the figure, when the fan 1 is a dual-inlet fan, the second nozzle 370 can be installed only on the side where the chassis 260 is located (i.e., the secondary inlet side), and the second nozzle 370 is fixed by a second fixing structure 450 without a bend 413. Of course, it is also possible to install the aforementioned first fixing structure 440 only on the secondary inlet side. In this way, on the one hand, it is beneficial to the assembly operation and can improve the assembly efficiency; on the other hand, it can maintain a stable and reliable state during the cleaning process, so that all connection parts maintain a good sealing state.

[0066] In an embodiment not shown in the figure, the fan 1 can be a single-sided air intake fan, and a mounting cavity 240 can be formed between the top plate 250 and the base plate 260. The nozzle assembly 30 can be fixed to one end of the fixed shaft 111 located in the mounting cavity 240 by a fixing structure 40. Specifically, the fixing structure 40 can include a first fixing structure 440 with a bend 413. Of course, the fixing structure 40 can adopt any of the aforementioned suitable structures to suit different scenarios. In this way, on the one hand, it is beneficial to the assembly operation and can improve the assembly efficiency; on the other hand, it can maintain a stable and reliable state during the cleaning process, so that the various connection parts maintain a good sealing state.

[0067] According to one aspect of this utility model, a range hood is provided. (See also...) Figure 1The range hood may include a housing 8, a cleaning medium supply device 9, and a fan 1 as described above. The fan 1 may be located inside the housing 8. The cleaning medium supply device 9 may include a cleaning medium outlet (not shown in the figure). A cleaning medium supply port 380 is provided at the end of the nozzle assembly 30 away from the nozzle 310. The cleaning medium outlet may be connected to the cleaning medium supply port 380 to supply cleaning medium to the nozzle assembly 30. Since the fan 1 described above has the aforementioned beneficial effects, the range hood including the fan 1 described above also has the aforementioned beneficial effects, which will not be elaborated further here.

[0068] In the description of this utility model, it should be understood that the directional terms such as "front", "rear", "up", "down", "left", "right", "horizontal", "vertical", "horizontal", "top", and "bottom" indicate the orientation or positional relationship, which are usually based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0069] For ease of description, relative terms such as "above," "over," "on the upper surface of," and "above" are used here to describe the regional positional relationship of one or more components or features shown in the figures to other components or features. It should be understood that relative terms include not only the orientation of the component as depicted in the figure but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0070] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0071] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0072] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fan, characterized in that, include: An electric motor having a fixed shaft assembly and an outer rotating body, the outer rotating body being sleeved on the fixed shaft assembly and rotatable relative to the fixed shaft assembly, the fixed shaft assembly having a hollow fixed shaft; An impeller, which is connected to the outer rotating body; as well as The nozzle assembly is inserted through the fixed shaft and fixed by a fixing structure. The nozzle assembly is provided with spray holes facing the impeller.

2. The fan according to claim 1, characterized in that, The fixing structure has a fixing seat, the fixing seat has a first connecting part and a second connecting part, the first connecting part is connected to the second connecting part, and the first connecting part is fixedly connected to the fixing shaft, and the nozzle assembly is fixedly connected to the second connecting part.

3. The fan according to claim 2, characterized in that, The fixing base also has a curved portion, and the second connecting portion is connected to the first connecting portion through the curved portion, and the second connecting portion and the first connecting portion have different connection directions.

4. The fan according to claim 3, characterized in that, The fixed base encloses and forms a receiving cavity. The fixed structure also has an elbow located in the receiving cavity. The elbow has a first connector and a second connector. The first connector is connected to a cleaning medium supply pipe. The second connector is connected to the first connector. The nozzle assembly has a connecting end. The connecting end passes through the second connecting part and is connected to the second connector.

5. The fan according to claim 4, characterized in that, The fixing seat includes a base and a cover. The base has a surrounding body and a semi-surrounding body. The accommodating cavity has a first cavity and a second cavity. The first cavity is formed by the surrounding body, and the second cavity is formed by the semi-surrounding body and the cover. The first joint is located in the first cavity, and the second joint is located in the second cavity.

6. The fan according to claim 5, characterized in that, The semi-enclosed body has a first semi-enclosed portion and a second semi-enclosed portion, the first semi-enclosed portion being located between the enclosing body and the second semi-enclosed portion, and the cover body has a first cover portion and a second cover portion, the first cover portion and the first semi-enclosed portion enclosing each other to form a second cavity, and the second cover portion and the second semi-enclosed portion enclosing each other to form a second connecting portion.

7. The fan according to claim 6, characterized in that, The second connecting part is configured as a cavity structure with a third cavity. The nozzle assembly has a mating pipe section located in the third cavity. A locking part is provided on the mating pipe section. A locking mating part is provided on the second cover or the second half-enclosure. The locking part engages with the locking mating part.

8. The fan according to claim 5, characterized in that, The fixed shaft has a accommodating channel, the cleaning medium supply pipe passes through the accommodating channel, and one end of the cleaning medium supply pipe is connected to the first connector, while one end of the fixed shaft is connected to the enclosure.

9. The fan according to claim 2, characterized in that, The first connecting part forms a first connector, the second connecting part forms a second connector, the second connector has a different connection direction from the first connector, and the first connector is connected to a cleaning medium supply pipe.

10. The fan according to claim 9, characterized in that, The fan also includes a support base, the fixed shaft is fixed to the support base, the fixing structure also includes a bracket, and the nozzle assembly is supported on the support base by the bracket.

11. The fan according to claim 9, characterized in that, The fixed shaft has a accommodating channel, the cleaning medium supply pipe passes through the accommodating channel, and one end of the cleaning medium supply pipe is connected to the first connector.

12. The fan according to any one of claims 1 to 11, characterized in that, The nozzle assembly includes a first section and a second section, the second section being connected to the first section and perpendicular to the first section, the end of the first section away from the second section being disposed on the fixed structure, and the nozzle being disposed on the second section.

13. The fan according to claim 12, characterized in that, The spray holes are multiple, and the multiple spray holes are arranged sequentially and at intervals on the second segment.

14. The fan according to claim 13, characterized in that, There is a spacing L between each pair of nozzles, and the spacing L is 0mm to 60mm.

15. The fan according to any one of claims 1 to 11, characterized in that, The nozzle assembly includes a first nozzle and a second nozzle, the fixing structure includes a first fixing structure and a second fixing structure, the fixing shaft has a first shaft end and a second shaft end, the first nozzle is connected to the first shaft end through the first fixing structure, and the second nozzle is connected to the second shaft end through the second fixing structure.

16. The fan according to claim 15, characterized in that, The impeller is divided into a first part and a second part by a partition plate. The nozzles on the first nozzle are arranged facing the first part, and the nozzles on the second nozzle are arranged facing the second part.

17. The fan according to claim 15, characterized in that, The impeller has a mounting cavity, and the first nozzle and the first fixing structure are both located within the mounting cavity.

18. A range hood, characterized in that, The device includes a housing, a cleaning medium supply device, and a fan as described in any one of claims 1-17. The fan is disposed inside the housing. The cleaning medium supply device has a cleaning medium outlet. The nozzle assembly has a cleaning medium supply port at one end away from the nozzle. The cleaning medium outlet is connected to the cleaning medium supply port to supply cleaning medium to the nozzle assembly.

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