Bladeless fan

Abstract

The present invention discloses a fan, which includes a volute and a wind wheel, wherein the wind wheel is arranged in the volute, and the volute has an air supply port; an air guide case, wherein the air guide case is provided with an air duct, an air inlet and an air outlet, and the air inlet and the air outlet are both connected with the air duct, and the air guide case is movably installed at the air supply port of the volute, and the air supply port is connected with the air inlet; and a rotating mechanism, wherein the rotating mechanism is used to drive the air guide case to rotate relative to the volute. When it is necessary to adjust the air outlet direction of the bladeless fan, the rotating mechanism can be directly operated, and the air guide case can be rotated under the drive of the rotating mechanism, so that the air outlet of the air guide case can swing left and right, thereby adjusting the air outlet direction. In the process of steering adjustment, the rotating mechanism only drives the air guide case to rotate alone, so that the load of the rotating mechanism can be smaller, so that the energy consumption of the bladeless fan is lower.

Description

Technical Field

[0001] The present invention relates to the technical field of fans, and in particular to a bladeless fan. Background Art

[0002] Bladeless fans are also called air multipliers. They can produce natural and continuous cool breezes by forcing air to be discharged through the air outlet of the air duct, thereby increasing the air flow. They are popular among consumers for their safety, cleanliness, and beauty. Usually, bladeless fans include a base body, which is connected to an air duct, and a wind wheel is arranged in the base body. When the wind wheel rotates, air enters from the air inlet on the side of the base body and is discharged from the air outlet of the air duct, thereby achieving the effect of "bladeless" wind outlet.

[0003] In order to increase the air output range of bladeless fans, a base and a rotating mechanism are often installed at the bottom of the bladeless fan. The rotating mechanism drives the base to drive the air duct to swing left and right to achieve air supply in different ranges in the horizontal direction. Since the rotating mechanism drives the base to rotate, it will drive the wind wheel and the air duct to rotate together, which increases the load of the rotating mechanism and makes the energy consumption of the rotating mechanism higher. Summary of the invention

[0004] Based on this, it is necessary to provide a bladeless fan for the above-mentioned problem, and the bladeless fan has low energy consumption.

[0005] A bladeless fan comprises: a fan, the fan comprising a volute and a wind wheel, the wind wheel is arranged in the volute, and the volute has an air supply port; an air guide case, the air guide case is provided with an air duct, an air inlet and an air outlet, and the air inlet and the air outlet are both connected to the air duct, the air guide case is movably installed at the air supply port of the volute, and the air supply port is connected to the air inlet; and a rotating mechanism, the rotating mechanism is used to drive the air guide case to rotate relative to the volute.

[0006] In the above-mentioned bladeless fan, since the air inlet and the air outlet are both connected to the air duct, and the air supply port on the volute is connected to the air inlet of the air duct, when the wind wheel in the volute is operating, the wind generated by the wind wheel can directly enter the air duct from the air supply port and be discharged from the air outlet, so that the bladeless fan can operate normally. In addition, since the air guide shell is movably installed at the air supply part of the volute, and the bladeless fan has a rotating mechanism for driving the air guide shell to rotate relative to the volute, when it is necessary to adjust the air outlet direction of the bladeless fan, the rotating mechanism can be directly operated, and the air guide shell can be rotated under the drive of the rotating mechanism, so that the air outlet of the air guide shell can swing left and right, thereby adjusting the air outlet direction. In the process of steering adjustment, the rotating mechanism only drives the air guide shell to rotate alone, so that the load of the rotating mechanism can be smaller, so that the energy consumption of the bladeless fan is lower.

[0007] The technical solution is further described below:

[0008] In one embodiment, the rotating mechanism includes a wheel assembly and a drive motor, the wheel assembly is located between the air guide casing and the volute, the wheel assembly is connected to the air guide casing and abuts against the volute, and the drive motor is used to drive the wheel assembly to rotate relative to the volute.

[0009] In one embodiment, the wheel assembly includes a first gear and a second gear, the first gear is located between the air guide shell and the volute, and the first gear is fixedly connected to the air guide shell, the side of the first gear facing away from the air guide shell is in contact with the volute, and the first gear is rotatable relative to the volute, the first gear is provided with a ventilation hole, the ventilation hole connects the air supply port and the air inlet, the second gear is meshed with the first gear, the drive motor is connected to the second gear, and is used to drive the second gear to rotate.

[0010] In one of the embodiments, the air guide shell is provided with a circle of connecting flanges around the circumference of the air inlet, the first gear is fixedly connected to the connecting flange, the volute has an air supply duct, and the air supply port is opened at the end of the air supply duct, the inner wall of the ventilation hole is provided with a limiting boss, and the end of the air supply duct with the air supply port is inserted into the ventilation hole and abuts against the limiting boss.

[0011] In one embodiment, the bladeless fan also includes a mounting assembly, which includes a base shell and an end cover unit. The base shell is provided with a accommodating cavity with an opening at one end. The fan is installed in the accommodating cavity, and the air outlet of the volute is facing the opening of the base shell. The end cover unit is installed at the opening of the base shell and connected to the base shell. The air guide shell, the second gear and the drive motor are all arranged on the end cover unit, and the air outlet of the air guide shell is located outside the accommodating cavity.

[0012] In one embodiment, the end cover unit includes a support frame, which is installed at the opening of the base shell. The support frame is provided with a accommodating groove on the outer wall of the support frame facing away from the base shell, and a through hole is provided on the bottom of the accommodating groove. The air guide shell is also provided with a circle of abutting flanges around its circumference, and the connecting flange is closer to the air inlet than the abutting flange along the air flow direction in the air duct, the connecting flange passes through the through hole and is connected to the first gear, the abutting flange abuts on the bottom of the accommodating groove, and the second gear is installed on the inner wall of the support frame.

[0013] In one of the embodiments, a mounting portion is provided on the support frame, and the mounting portion is located on the inner wall of the support frame, and the driving motor is mounted on the mounting portion.

[0014] In one of the embodiments, the end cover unit also includes a machine cover, which is arranged at the opening of the accommodating cavity and connected to the base shell, and the machine cover is provided with a mounting through hole for the air guide shell to pass through, and the outer edge of the accommodating groove is formed with a mounting flange, and the support frame is located on the side of the machine cover facing the accommodating cavity and is passed so that the mounting flange is connected to the machine cover.

[0015] In one of the embodiments, a positioning flange is provided on the inner edge of the mounting through hole facing the accommodating cavity, a gap is formed between the abutting flange and the outer wall of the air guide shell, the inner edge of the abutting flange is connected to the outer edge of the connecting flange via a connecting portion, a positioning groove is formed between the abutting flange, the connecting portion, the connecting flange and the air guide shell, and the positioning flange is snapped into the positioning groove. In one of the embodiments, the air guide shell is a pipe-like structure, and the air guide shell can rotate around the central axis of the air guide shell relative to the volute, and the air outlet is a strip-like structure and extends along the length direction of the air guide shell.

[0016] In one embodiment, the volute is provided with two air supply outlets which are arranged in parallel, and the air guide shells and the rotating mechanism are each provided with two, wherein the air supply outlets correspond one-to-one to the air guide shells, and the air guide shells correspond one-to-one to the rotating mechanism, and the rotating mechanism can drive the corresponding air guide shells to rotate relative to the volute at the corresponding air supply outlets. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the various elements are drawn only as examples in the drawings and are not necessarily drawn according to the true scale.

[0020] Figure 1 A schematic diagram of the structure of a bladeless fan in one embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure explosion of a bladeless fan in one embodiment of the present invention;

[0022] Figure 3 It is a schematic diagram of the assembly of an air guide housing, a turbine and a driving mechanism in one embodiment of the present invention;

[0023] Figure 4 It is a schematic cross-sectional view of the structure of an air guide shell in one embodiment of the present invention;

[0024] Figure 5 for Figure 4 A magnified schematic diagram of the structure at the center circle A;

[0025] Figure 6 It is a schematic diagram of the assembly of the air guide housing and the driving mechanism in one embodiment of the present invention;

[0026] Figure 7 It is a structural schematic diagram of a mounting bracket in one embodiment of the present invention;

[0027] Figure 8 It is a schematic cross-sectional view of the structure of the mounting bracket in one embodiment of the present invention;

[0028] Fig. 9 for Figure 6 A schematic cross-sectional view of the structure of the central air guide housing and the driving mechanism;

[0029] Fig.10 for Fig. 9 A magnified schematic diagram of the structure at the middle circle B;

[0030] Fig.11 It is a schematic diagram of the structure of the cover in one embodiment of the present invention;

[0031] Fig.12 It is a schematic structural diagram of the cover at another viewing angle in one embodiment of the present invention.

[0032] The components in the figure are marked as follows:

[0033] 10. bladeless fan; 110. fan; 111. volute; 1111. air outlet; 1112. air supply duct; 112. wind wheel; 120. air guide shell; 121. air duct; 122. air inlet; 123. air outlet; 124. connecting flange; 1241. second threaded hole; 125. abutting flange; 126. connecting part; 127. positioning groove; 130. rotating mechanism; 131. wheel assembly; 1311. first gear; 13111. ventilation perforation ; 13112, limiting boss; 13113, first threaded hole; 1312, second gear; 132, driving motor; 141, base shell; 142, end cover unit; 1421, support frame; 14211, accommodating groove; 14212, through hole; 14213, mounting portion; 14214, mounting flange; 14215, first connecting hole; 1422, machine cover; 14221, mounting through hole; 14222, second connecting hole; 14223, positioning flange. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0035] See also Figures 1 to 4 An embodiment of the present application provides a bladeless fan 10, comprising: a fan 110, an air guide housing 120 and a rotating mechanism 130. The fan 110 comprises a volute 111 and a wind wheel 112. The wind wheel 112 is arranged in the volute 111, and the volute 111 has an air supply port 1111. The air guide housing 120 is provided with an air duct 121, an air inlet 122 and an air outlet 123, and the air inlet 122 and the air outlet 123 are both connected to the air duct 121. The air guide housing 120 is movably mounted at the air supply port 1111 of the volute 111, and the air supply port 1111 is connected to the air inlet 122. The rotating mechanism 130 is used to drive the air guide housing 120 to rotate relative to the volute 111.

[0036] In the above-mentioned bladeless fan 10, since the air inlet 122 and the air outlet 123 are both connected to the air duct 121, and the air supply port 1111 on the volute 111 is connected to the air inlet 122 of the air duct 121, when the wind wheel 112 in the volute 111 is operating, the wind generated by the wind wheel 112 can directly enter the air duct 121 from the air supply port 1111 and be discharged from the air outlet 123, so that the bladeless fan 10 can operate normally. In addition, since the air guide housing 120 is movably installed at the air supply position of the volute 111, and the bladeless fan 10 has a rotating mechanism 130 for driving the air guide housing 120 to rotate relative to the volute 111, when the air outlet direction of the bladeless fan 10 needs to be adjusted, the rotating mechanism 130 can be directly operated, and the air guide housing 120 can be rotated under the drive of the rotating mechanism 130, so that the air outlet 123 of the air guide housing 120 can swing left and right, thereby adjusting the air outlet direction. During the steering adjustment process, the rotating mechanism 130 only drives the air guide housing 120 to rotate alone, so that the load of the rotating mechanism 130 can be small, so that the energy consumption of the bladeless fan 10 is low.

[0037] See also Figure 2 , Figure 3 and Figure 6On the basis of the above embodiment, in one embodiment, the rotating mechanism 130 includes a wheel assembly 131 and a driving motor 132. The wheel assembly 131 is located between the air guide housing 120 and the volute 111, and the wheel assembly 131 is connected to the air guide housing 120 and abuts against the volute 111. The driving motor 132 is used to drive the wheel assembly 131 to rotate relative to the volute 111. Therefore, when it is necessary to adjust the air outlet direction of the air guide housing 120, the driving motor 132 can be directly started to rotate the air guide housing 120, thereby adjusting the air outlet direction.

[0038] In order to prevent the wheel assembly 131 from affecting the air supply effect of the air supply port 1111 when it is working, based on the above embodiment, in one embodiment, as Figure 2 , Figure 3 and Figure 6 As shown, the wheel assembly 131 includes a first gear 1311 and a second gear 1312. The first gear 1311 is located between the air guide housing 120 and the volute housing 111, and the first gear 1311 is fixedly connected to the air guide housing 120. The first gear 1311 is in contact with the volute housing 111 on a side away from the air guide housing 120, and the first gear 1311 is rotatable relative to the volute housing 111. Fig. 9 and Fig.10 As shown, the first gear 1311 is provided with a ventilation hole 13111, and the ventilation hole 13111 is connected to the air supply port 1111 and the air inlet 122. The second gear 1312 is in driving engagement with the first gear 1311, and the driving motor 132 is connected to the second gear 1312 and is used to drive the second gear 1312 to rotate.

[0039] Specifically, in this embodiment, Figure 2 , Figure 3 and Figure 6 As shown, the air guide housing 120 is a pipe-like structure, and the air outlet 123 is a strip-like structure and extends along the length direction of the air guide housing 120. In this way, when the driving motor 132 drives the second gear 1312 to rotate, the first gear 1311 can be rotated, and then the air guide housing 120 can rotate relative to the volute 111 around the central axis of the air guide housing 120 to achieve the left and right swing of the air outlet 123 on the air guide housing 120 relative to the fan 110. At the same time, the driving motor 132 can drive the second gear 1312 to rotate 360°, so that the air guide housing 120 can also rotate under the action of the first gear 1311, and correspondingly, the air outlet 123 can also blow 360°, thereby improving the applicability of the bladeless fan 10.

[0040] In order to achieve a fast and stable connection between the air guide housing 120 and the first gear 1311, please refer to Figure 4 , Figure 5 , Fig. 9 and Fig.10On the basis of the above embodiments, in one embodiment, a circle of connecting flange 124 is provided on the air guide shell 120 around the circumference of the air inlet 122 , and the first gear 1311 is fixedly connected to the connecting flange 124 .

[0041] Furthermore, in order to achieve stability in the communication between the air inlet 122 and the air outlet 1111, in this embodiment, Figure 2 and Figure 3 As shown, the volute 111 has an air supply duct 1112, and an air supply port 1111 is opened at the end of the air supply duct 1112. Fig. 9 and Fig.10 As shown, the inner wall of the ventilation hole 13111 is provided with a limiting boss 13112. The end of the air supply duct 1112 having the air supply port 1111 is inserted into the ventilation hole 13111 and abuts against the limiting boss 13112. In this way, it is also convenient to achieve rapid communication between the air supply port 1111 and the air inlet 122.

[0042] Optionally, the connection method between the first gear 1311 and the connecting flange 124 is not specifically limited. For example, the first gear 1311 is provided with a first clamping portion, and the connecting flange 124 is provided with a second clamping portion. The first clamping portion and the second clamping portion are clamped to achieve the fixed connection between the first gear 1311 and the connecting flange 124.

[0043] Specifically, in this embodiment, Fig. 9 and Fig.10 As shown, the first gear 1311 is provided with a first threaded hole 13113, and the connecting flange 124 is provided with a second threaded hole 1241. The first gear 1311 and the connecting flange 124 are connected by screws or bolts penetrating the first threaded hole 13113 and the second threaded hole 1241. In this way, a quick and stable connection between the first gear 1311 and the air guide housing 120 can be achieved.

[0044] Based on the above embodiment, in one embodiment, the bladeless fan 10 further includes a mounting assembly.

[0045] Specifically, see Figures 1 to 3 , the installation assembly includes a base shell 141 and an end cover unit 142. A accommodating cavity with an opening at one end is provided in the base shell 141. The fan 110 is installed in the accommodating cavity, and the air outlet 1111 of the volute 111 faces the opening of the base shell 141. The end cover unit 142 is installed at the opening of the base shell 141 and is connected to the base shell 141. The air guide shell 120, the second gear 1312 and the drive motor 132 are all arranged on the end cover unit 142. The air outlet 123 of the air guide shell 120 is located outside the accommodating cavity. By installing the fan 110 in the base shell 141, the probability of damage to the fan 110 can be reduced, and the service life of the bladeless fan 10 can be increased; at the same time, it can effectively prevent people from accidentally touching the wind wheel 112, thereby improving the safety of the bladeless fan 10.

[0046] Specifically, in this embodiment, Figure 2 , Figure 3 , Figures 7 to 10 As shown, the end cover unit 142 includes a support frame 1421. The support frame 1421 is installed at the opening of the base shell 141. A receiving groove 14211 is provided on the outer wall of the support frame 1421 facing away from the base shell 141, and a through hole 14212 is provided on the bottom of the receiving groove 14211. A circle of abutting flanges 125 is also provided around the circumference of the air guide shell 120, and the connecting flange 124 is closer to the air inlet 122 than the abutting flange 125 along the air flow direction in the air duct 121. The connecting flange 124 passes through the through hole 14212 and is connected to the first gear 1311. The abutting flange 125 abuts on the bottom of the receiving groove 14211. The second gear 1312 is installed on the inner wall of the support frame 1421. By providing the abutting flange 125, the support frame 1421 can support the air guide housing 120, reducing the pressure exerted by the air guide housing 120 on the volute 111, which is conducive to reducing the difficulty of the rotating mechanism 130 driving the air guide housing 120 to rotate. Since the connecting flange 124 passes through the through hole 14212 and is connected to the first gear 1311, it can be known that the first gear 1311 is located on the inner wall side of the support frame 1421, so the second gear located on the inner wall of the support frame 1421 can mesh with the first gear 1311 to realize transmission.

[0047] In order to facilitate a clear understanding of the setting of the air flow direction in the air duct 121 in this embodiment, Fig.10 For example, the air flow direction in the air duct 121 is Fig.10 The direction pointed by S1.

[0048] It should be noted that the outer wall of the support frame 1421 refers to the wall away from the accommodating cavity, and the inner wall of the support frame 1421 refers to the wall facing the accommodating cavity. In this embodiment, the outer wall and the inner wall of the support frame 1421 are arranged opposite to each other.

[0049] Specifically, in this embodiment, Figures 6 to 8 As shown, a mounting portion 14213 is provided on the support frame 1421 , and the mounting portion 14213 is located on the inner wall of the support frame 1421 , and the driving motor 132 is mounted on the mounting portion 14213 .

[0050] Specifically, in this embodiment, Figure 2 and Figure 3 As shown, the end cover unit 142 also includes a machine cover 1422. The machine cover 1422 is disposed at the opening of the accommodating cavity and is connected to the base shell 141. Figures 9 to 11As shown, the cover 1422 is provided with a mounting through hole 14221 for the air guide housing 120 to pass through. In this way, the air outlet of the air guide housing 120 is not affected, and liquid or impurities entering the accommodating cavity to damage the fan 110 can be prevented; in addition, the cover 1422 can cover the fan 110 and other components, which is conducive to improving the aesthetics of the bladeless fan 10.

[0051] Furthermore, in order to improve the convenience of connecting the support frame 1421 and the cover 1422, as Figure 7 , Figure 8 and Fig.10 As shown, the outer edge of the receiving groove 14211 is formed with a mounting flange 14214. The support frame 1421 is located on the side of the machine cover 1422 facing the receiving cavity and is connected to the machine cover 1422 through the mounting flange 14214.

[0052] Optionally, the connection method between the mounting flange 14214 and the cover 1422 is not specifically limited, for example, snap connection, bonding, threaded connection, etc.

[0053] Specifically, in this embodiment, Figure 7 and Fig.10 As shown, the mounting flange 14214 is provided with a first connection hole 14215, and the cover 1422 is provided with a second connection hole 14222, and the first connection hole 14215 corresponds to the second connection hole 14222. The mounting flange 14214 is fixedly connected to the cover 1422 by inserting screws or bolts into the first connection hole 14215 and the second connection hole 14222.

[0054] See also Figure 5 , Fig.10 and Fig.12 On the basis of the above embodiment, in one embodiment, a positioning flange 14223 is provided on the inner edge of the mounting through hole 14221 facing the accommodating cavity. There is a gap between the abutting flange 125 and the outer wall of the air guide shell 120. The inner edge of the abutting flange 125 is connected to the outer edge of the connecting flange 124 through the connecting portion 126. The abutting flange 125, the connecting portion 126, the connecting flange 124 and the air guide shell 120 form a positioning groove 127. The positioning flange 14223 is clamped in the positioning groove 127.

[0055] Specifically, in this embodiment, Figure 5 As shown, the second threaded hole 1241 is located in the positioning groove 127 .

[0056] See also Figures 1 to 3On the basis of the above-mentioned embodiments, in one embodiment, the volute 111 is provided with two air outlets 1111 and arranged in parallel. There are two air guide shells 120 and two rotating mechanisms 130. Among them, the air outlets 1111 correspond to the air guide shells 120 one by one, the air guide shells 120 correspond to the rotating mechanisms 130 one by one, and the rotating mechanisms 130 can drive the corresponding air guide shells 120 to rotate relative to the volute 111 at the corresponding air outlets 1111. The two air outlets 123 discharge air at the same time, which can make the blowing effect of the bladeless fan 10 better and help improve the comfort of the user. In addition, since the rotation of the two air guide shells 120 is respectively controlled by the corresponding rotating mechanisms 130, and the two rotating mechanisms 130 do not interfere with each other, the user can adjust the air outlet direction of different air outlets 123 according to their own needs, so that the bladeless fan 10 has better adaptability.

[0057] In this embodiment, since the air guide housing 120 is a pipe-like structure, when the two air guide housings 120 are arranged in parallel with the two air outlets 1111, the two air guide housings 120 will not interfere with each other in space during the rotation process to affect the adjustment of the air outlet direction. At the same time, the air guide housing 120 with a pipe-like structure requires less space during the self-rotation process, thereby reducing the volume of the bladeless fan 10. In addition, since the air outlet 123 is strip-shaped and extends along the length direction of the air guide housing 120, the bladeless fan 10 can have a longer range of air outlet heights to improve the applicability of the bladeless fan 10.

[0058] When assembling the bladeless fan 10, the driving motor 132 connected with the second gear 1312 is fixedly installed to the mounting column through the mounting ear. At the same time, the end of the air guide housing 120 with the air inlet 122 is passed through the through hole 14212 in the receiving groove 14211, and the abutting flange 125 is abutted against the bottom of the receiving groove 14211. Then, the first gear 1311 is fixedly installed on the connecting flange 124 and meshed with the second gear 1312; the mounting through hole 14221 is aligned with the top of the air guide housing 120, and the cover 1422 is moved down until the positioning flange 14223 is inserted into the positioning groove 126, and the cover 1422 is connected to the mounting flange 14214 of the mounting bracket by bolts or screws. When performing the above assembly steps, the volute 111 can be fixedly installed in the receiving chamber at the same time, so that the air supply port 1111 of the volute 111 faces the opening of the receiving chamber. After the installation is completed, the first gear 1311 can be abutted against the air outlet 1111 of the volute 111 , and the machine cover 1422 is set at the opening of the accommodating cavity and fixedly connected to the base shell 141 to complete the assembly of the bladeless fan 10 .

[0059] It should be noted that the above assembly steps can be adaptively adjusted. For example, the end of the air guide shell 120 with the air inlet 122 can pass through the through hole 14212 in the accommodating groove 14211 and be fixedly connected to the first gear 1311, and then the driving motor 132 with the second gear 1312 installed is fixed to the mounting bracket through the mounting column.

[0060] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0061] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0063] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0064] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A bladeless fan, characterized in that: include: A fan, the fan comprising a volute and a wind wheel, the wind wheel is arranged in the volute, and the volute has an air supply port; An air guide shell, wherein the air guide shell is provided with an air duct, an air inlet and an air outlet, and the air inlet and the air outlet are both connected to the air duct, the air guide shell is movably mounted at the air supply port of the volute, and the air supply port is connected to the air inlet; and The camshaft is a gear mounted on the rear of the engine and is configured to mount the gear on the rear of the engine and to move the gears relative to the engine as the engine moves along the camshaft. The camshaft is a gear mounted on the rear of the engine and is configured to mount the gears relative to the engine. The camshaft is a gear mounted on the rear of the engine and is configured to mount the gears relative to the engine. An installation component, which includes a base shell and an end cover unit, wherein the base shell is provided with a accommodating cavity with an opening at one end, and the fan is installed in the accommodating cavity; the end cover unit includes a support frame, which is installed at the opening of the base shell, and the support frame is provided with a accommodating groove on the outer wall facing away from the base shell, and a through hole is provided on the bottom of the accommodating groove; the air guide shell is also provided with a circle of abutting flanges around its circumference, and the connecting flange is closer to the air inlet than the abutting flange along the air flow direction in the air duct, the connecting flange passes through the through hole and is connected to the first gear, the abutting flange abuts on the bottom of the accommodating groove, and the second gear is installed on the inner wall of the support frame.

2. The bladeless fan according to claim 1, characterized in that: The volute has an air supply duct, and the air supply port is opened at the end of the air supply duct, and a limiting boss is provided on the inner wall of the ventilation hole. The end of the air supply duct with the air supply port is inserted into the ventilation hole and abuts against the limiting boss.

3. The bladeless fan according to claim 2, characterized in that: The air supply port of the volute faces the opening of the base shell, the end cover unit is installed at the opening of the base shell and connected to the base shell, the air guide shell, the second gear and the drive motor are all arranged on the end cover unit, and the air outlet of the air guide shell is located outside the accommodating cavity.

4. The bladeless fan according to claim 1, characterized in that: The support frame is provided with a mounting portion, and the mounting portion is located on the inner wall of the support frame, and the driving motor is mounted on the mounting portion.

5. The bladeless fan according to claim 1, characterized in that: The end cover unit also includes a machine cover, which is arranged at the opening of the accommodating cavity and connected to the base shell. The machine cover is provided with an installation through hole for the air guide shell to pass through. The outer edge of the accommodating groove is formed with a mounting flange. The support frame is located on the side of the machine cover facing the accommodating cavity and is connected to the machine cover through the mounting flange.

6. The bladeless fan according to claim 5, characterized in that: A positioning flange is provided on the inner edge of the mounting through hole toward the accommodating cavity, and a gap is formed between the abutting flange and the outer wall of the air guide shell. The inner edge of the abutting flange is connected to the outer edge of the connecting flange through a connecting portion, and a positioning groove is formed between the abutting flange, the connecting portion, the connecting flange and the air guide shell, and the positioning flange is clamped in the positioning groove.

7. The bladeless fan according to any one of claims 1 to 6, characterized in that: The air guide shell is a pipe-like structure, and the air guide shell can rotate relative to the volute around the central axis of the air guide shell, and the air outlet is a strip-like structure and extends along the length direction of the air guide shell.

8. The bladeless fan according to any one of claims 1 to 6, characterized in that: The volute is provided with two air supply outlets which are arranged in parallel, and the air guide shells and the rotating mechanism are each provided with two, wherein the air supply outlets correspond one-to-one to the air guide shells, and the air guide shells correspond one-to-one to the rotating mechanism, and the rotating mechanism can drive the corresponding air guide shells to rotate relative to the volute at the corresponding air supply outlets.

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