Cold and warm air purification circulating fan with adjustable air inlet

Abstract

The invention discloses a cold and warm air purification circulating fan with an adjustable air inlet, which comprises a machine body provided with a machine body front air inlet hole and a machine body rear air inlet hole; a motor support; fan blades are arranged on an output shaft of the fan; a heating assembly; an air outlet net; a rear cover; a filter assembly; air duct air inlet holes which are uniformly distributed in the circumferential direction are formed in the air duct, and the air duct air inlet holes correspond to the air inlet holes in the front portion of the machine body; the air control ring is provided with air control ring air inlet holes matched with the air channel air inlet holes, and when the air control ring and the air channel rotate relatively, the air channel air inlet holes and the air control ring air inlet holes are communicated or isolated from each other. According to the cold and warm air purification circulating fan with the adjustable air inlet, the air inlet amount of the circulating fan can be adjusted by controlling the air control ring, then the appropriate air amount and appropriate cold and warm air are adjusted, adjustment is convenient, application flexibility is high, the cold and warm air purification circulating fan has the advantages of being large in air force, large in air amount, long in air blowing distance and low in noise in use, and use experience is good.

Description

Technical Field

[0001] The invention relates to a purification circulation fan, in particular to a cold and warm air purification circulation fan with adjustable air inlet. Background Art

[0002] Circulation fans with purification and heating functions are widely used household appliances. They have the functions of both hot and cold fans and air purification, and are increasingly favored by consumers.

[0003] The existing cold and warm air purification circulation fan adds a high-efficiency filter module or other filter device at the air inlet end of the cold and warm air fan, thereby achieving the function of blowing cold air or warm air and purifying the air. However, there are problems with the existing cold and warm air purification circulation fan, which are mainly manifested as follows: since a high-efficiency filter module or other filter device is added to the air inlet of the circulation fan, the air inlet of the circulation fan is miniaturized, which greatly reduces the air inlet area of ​​the air inlet, thereby increasing the motor load. And due to the above reasons, regardless of whether the user chooses cold air or warm air, this cold and warm circulation fan has problems such as high noise, low wind speed, small air volume, and short air supply distance when working, which greatly affects the user experience. The above-mentioned defects seriously limit the further promotion and application of this product.

[0004] In view of this, the purpose of the present invention is to provide a new technical solution to solve the existing technical problems. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a cold and warm air purification circulation fan with adjustable air inlet, which solves the technical defects of the existing cold and warm air purification circulation fans such as low wind force, small air volume, short blowing distance, high noise, poor flexibility of use, and poor user experience.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A cold and warm air purification circulation fan with adjustable air inlet, comprising:

[0008] A fuselage, wherein the fuselage has a hollow inner cavity extending from front to back, and the fuselage is provided with a front air inlet and a rear air inlet connected to the hollow inner cavity;

[0009] A motor bracket, the motor bracket being installed in the hollow inner cavity of the fuselage;

[0010] A fan, wherein the fan is arranged at the central position of the motor bracket, the output shaft of the fan extends toward the front end of the fuselage and the output shaft of the fan is provided with fan blades;

[0011] A heating component, the heating component is arranged in the hollow inner cavity of the fuselage, and the heating component is located behind the fan blade;

[0012] An air outlet net, the air outlet net is arranged at the front end outlet of the hollow inner cavity of the fuselage;

[0013] A rear cover, the rear cover being arranged at a rear end entrance of the hollow inner cavity of the fuselage;

[0014] An air duct, the air duct is arranged in the hollow inner cavity of the fuselage, the air duct is located between the air outlet net and the motor bracket, and the air duct is provided with air inlet holes evenly distributed in the circumferential direction, and the air inlet holes of the air duct correspond to the air inlet holes at the front of the fuselage;

[0015] An air control ring, the air control ring is arranged in the hollow inner cavity of the fuselage, the air control ring is rotatably sleeved on the outer periphery of the air duct, the air control ring is provided with an air control ring air inlet hole adapted to the air inlet hole of the air duct, when the air control ring and the air duct rotate relative to each other, the air inlet hole of the air duct and the air control ring air inlet hole are connected to each other or isolated from each other;

[0016] A filter assembly is disposed in the hollow inner cavity of the fuselage and the position of the filter assembly corresponds to the rear air inlet hole of the fuselage.

[0017] As a first improvement of the above technical solution, it also includes an air control ring driving device, which includes a rotary drive motor, a rotary drive gear is arranged on the output shaft of the rotary drive motor, and a rotary drive rack matching the rotary drive gear is arranged on the air control ring, the rotary drive rack and the rotary drive gear are meshed with each other, and the rotary drive motor can drive the air control ring to rotate relative to the air duct through the rotary drive gear and the rotary drive gear.

[0018] As a further improvement of the above technical solution, the rotary drive motor is installed on the outer wall of the air duct, the rotary drive rack is arranged on the outer wall of the air control ring, the rotary drive rack includes a rack connecting part and a rack part, the rack connecting part is fixedly connected to the air control ring, and the rack part is provided with teeth that mesh with the rotary drive gear.

[0019] As a second implementation improvement of the above technical solution, the wind control ring extends outwardly with a rotating paddle for driving it to rotate relative to the wind control ring. The rotating paddle passes through the fuselage and extends to the outside of the fuselage. A paddle passing slot is opened on the fuselage to adapt to the rotating paddle.

[0020] As a further improvement of the above technical solution, the motor bracket includes a bracket mounting ring plate, a bracket intermediate grid plate and a connecting grid connected between the bracket mounting ring plate and the bracket intermediate grid plate. The bracket mounting ring plate is used to be directly or indirectly fixedly connected to the fuselage, and the fan is fixedly mounted on the bracket intermediate grid plate.

[0021] As a further improvement of the above technical solution, an internal fuselage connecting ring plate is arranged inside the fuselage, and the rear side wall of the bracket mounting ring plate abuts against the front side wall of the internal fuselage connecting ring plate and is fixedly connected to the internal fuselage connecting ring plate.

[0022] As a further improvement of the above technical solution, the filter assembly is a cylindrical filter device, and the filter assembly is internally mounted inside the fuselage where the rear air inlet is provided. There is an air space between the outer wall of the filter group and the rear inner wall of the fuselage where the rear air inlet is provided. The bracket mounting ring plate and the connecting grille form a step outside the motor bracket, the front end of the filter assembly is installed at the step, and the rear end of the filter assembly abuts against the rear cover.

[0023] As a further improvement of the above technical solution, the air duct is located between the rear end of the air outlet network and the front end of the motor bracket. The rear end of the air duct has an air duct connecting part and is fixedly connected to the bracket mounting ring plate of the motor bracket through the air duct connecting part.

[0024] As a further improvement of the above technical solution, the front end outer wall of the air duct has an annular recess, the wind control ring is rotatably mounted on the annular recess of the air duct, and there is an air space between the outer wall of the wind control ring and the front inner wall of the fuselage having the front air inlet hole of the fuselage.

[0025] As a further improvement of the above technical solution, the rear cover is detachably arranged at the rear port portion of the hollow inner cavity of the fuselage, and the inner wall of the rear cover has an internal ring plate, which forms a rear cover step on the rear cover, and the rear end of the filter assembly is supported on the rear cover step.

[0026] As a further improvement of the above technical solution, the rear end portion of the back cover is recessed inward to form a back cover handle, a back cover mounting buckle is provided on the back cover, a back cover buckle groove is provided on the inner side of the rear end of the fuselage, the back cover mounting buckle is fastened to the back cover buckle groove and allows the back cover to be detachably mounted on the rear end of the fuselage.

[0027] As a further improvement of the above technical solution, the air outlet net includes an air outlet net external ring plate and an air outlet net grille connected to the air outlet net external ring plate, the air outlet net external ring plate extends backward with an air outlet net mounting buckle, the inner side of the fuselage is provided with a positioning step and an air outlet net buckle slot matching the air outlet net mounting buckle, the rear end of the air outlet net external ring plate is matched and installed at the positioning step, the air outlet net mounting buckle is buckled in the air outlet net buckle slot and makes the air outlet net detachably connected to the fuselage.

[0028] As a further improvement of the above technical solution, the air outlet net has an air duct top pressure plate extending backward from the rear end of the outer ring plate of the air outlet net, and the air duct top pressure plate abuts against the front end of the air duct.

[0029] As a further improvement of the above technical solution, the heating component is arranged between the fan and the fan blades, and the heating component includes a heating mounting seat located in the middle and a heating wire extending from the heating mounting seat. The heating mounting seat has a through hole in the middle position and the through hole is passed through the output shaft of the fan, and the heating component is located in the inner cavity of the air duct.

[0030] As a further improvement of the above technical solution, the air duct air inlet hole and the air control ring air inlet hole are both long strip-shaped through holes extending along the axial direction of the fuselage.

[0031] As a further improvement of the above technical solution, it also includes a base, the base includes a base body and a support arm, and the support arm is rotatably connected to the fuselage through a rotating shaft.

[0032] The beneficial effects of the present invention are as follows: the present invention provides a cold and warm air purification circulation fan with an adjustable air inlet, which can be driven to rotate by the air control ring, and the air volume passing through the air inlet hole of the air control ring and the air inlet hole of the air duct can be adjusted by using the air control ring and the air duct, so as to control the air volume entering the air duct, and has the advantage of flexibility in use. When it is necessary to achieve the maximum purification function or provide the warmest warm air, the air control ring is rotated to close the air inlet hole of the air control ring and the air inlet hole of the air duct. At this time, all the air volume needs to be filtered by the filtering component, which has the advantage of maximizing the purification effect and can also realize the function of supplying the warmest hot air; when a large air volume is required, the air control ring is rotated to open the air inlet hole of the air control ring and the air inlet hole of the air duct. At this time, most of the air entering the fuselage will be directly sent out by the fan, and a small part of the air entering the fuselage will be filtered by the filtering component. Under this use condition, it has the advantages of large wind force, large air volume, long air supply distance and low noise, and the temperature of the warm air is adjusted by adjusting the air control ring. Therefore, this kind of cold and warm air purification circulation fan with adjustable air inlet can flexibly combine the advantages of filtration and purification, large air volume, strong wind force, long air supply distance, low noise, etc., and can solve the different needs of users for cold and warm air of the cold and warm air purification circulation fan by adjusting the air inlet, giving customers the best experience. Consumers have high flexibility when using it, better user experience, better market competitiveness, and are convenient for further promotion of this kind of product.

[0033] In summary, this type of cold and warm air purification circulation fan with adjustable air inlet solves the technical defects of existing cold and warm air purification circulation fans such as low wind force, small air volume, short blowing distance, high noise, poor flexibility of use, and poor user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0035] Figure 1 It is a schematic diagram of the assembly of a cold and warm air purification circulation fan with adjustable air inlet in Embodiment 1 of the present invention;

[0036] Figure 2 This is a structural disassembly diagram of a cold and warm air purification circulation fan with adjustable air inlet in Example 1 of the present invention;

[0037] Figure 3 It is a schematic diagram of the cross section and wind flow direction of a cold and warm air purification circulation fan with adjustable air inlet in Example 1 of the present invention when the air control ring is open;

[0038] Figure 4 It is a schematic diagram of the cross section and wind flow direction of a cold and warm air purification circulation fan with adjustable air inlet in Example 1 of the present invention when the air control ring is closed;

[0039] Figure 5It is a schematic diagram of the internal assembly of a cold and warm air purification circulation fan with adjustable air inlet in Example 1 of the present invention when the air control ring is open;

[0040] Figure 6 It is a schematic diagram of the internal assembly of a cold and warm air purification circulation fan with an adjustable air inlet in Example 1 of the present invention when the air control ring is closed;

[0041] Figure 7 It is a cross-sectional schematic diagram of a cold and warm air purification circulation fan with adjustable air inlet in Embodiment 2 of the present invention;

[0042] Figure 8 This is a schematic diagram of the internal assembly of a cold and warm air purification circulation fan with adjustable air inlet in Example 2 of the present invention.

[0043] Fig. 9 It is a structural disassembly diagram of the fuselage, wind control ring, air duct and air outlet network in Example 2 of the present invention. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other, refer to Figure 1-Figure 9 .

[0045] Embodiment 1:

[0046] Reference Figure 1-6 , the present invention provides:

[0047] A cold and warm air purification circulation fan with adjustable air inlet comprises: a body 1, a motor bracket 2, a fan 3, a heating component 32, an air outlet net 4, a rear cover 5, an air duct 6, an air control ring 7, and a filter component 8.

[0048] Specifically in the present technical solution, the fuselage 1 has a hollow inner cavity 10 that passes through from front to back, and the fuselage 1 is provided with a front air inlet 11 and a rear air inlet 12 that are connected to the hollow inner cavity 10 of the fuselage 1; the motor bracket 2 is installed in the hollow inner cavity 10 of the fuselage 1; the fan 3 is arranged at the central position of the motor bracket 2, the output shaft of the fan 3 extends toward the front end of the fuselage 1 and the output shaft of the fan 3 is provided with fan blades 31, the fan blades 31 are fixedly installed at the front end of the output shaft of the fan 3 by fan blade fixing nuts 311, and the front end of the output shaft of the fan 3 is provided with a threaded portion that cooperates with the fan blade fixing nuts 311; the heating component 32 is arranged in the hollow inner cavity 10 of the fuselage 1, and the heating component 32 is located behind the fan blades 31; the air outlet net 4 is arranged at the front end outlet of the hollow inner cavity 10 of the fuselage 1; The rear cover 5 is arranged at the rear end entrance of the hollow inner cavity 10 of the fuselage 1; the air duct 6 is arranged in the hollow inner cavity 10 of the fuselage 1, the air duct 6 is located between the air outlet net 4 and the motor bracket 2, and the air duct 6 is provided with air duct air inlet holes 61 evenly distributed in the circumferential direction, and the air duct air inlet holes 61 correspond to the air inlet holes 11 at the front of the fuselage; the air control ring 7 is arranged in the hollow inner cavity 10 of the fuselage 1, the air control ring 7 is rotatably mounted on the outer periphery of the air duct 6, and the air control ring air inlet holes 71 adapted to the air duct air inlet holes 61 are arranged on the air control ring 7, when the air control ring 7 and the air duct 6 rotate relative to each other, the air duct air inlet holes 61 and the air control ring air inlet holes 71 are connected to or isolated from each other; the filter assembly 8 is arranged in the hollow inner cavity 10 of the fuselage 1 and the position of the filter assembly 8 corresponds to the air inlet hole 12 at the rear of the fuselage on the fuselage 1.

[0049] In this technical solution, refer to Figure 4 After the purification circulation fan starts working, the fan 3 drives the fan blades 31 to operate, and drives the wind to pass through the air outlet grille 4 and then blow to the front end. When warm air is needed, the heating component 32 works and heats the air. Therefore, the wind blown out by the fan blades 31 driven by the fan 3 is warm air. When the user needs to achieve the maximum purification effect, the maximum temperature and the highest warm air, the air control ring 7 is driven to rotate relative to the air duct 6, so that the air duct ring air inlet 71 and the air duct air inlet 61 are dislocated and isolated from each other. At this time, the air entering the hollow inner cavity 10 from the front air inlet 11 of the fuselage cannot enter the air duct 6 through the air duct ring air inlet 71 and the air duct air inlet 61. All air entering the hollow inner cavity 10 needs to enter through the rear air inlet 12 of the fuselage and pass through the filtering process of the filter component 8 before entering the air duct. In this case, almost all air needs to be filtered to maximize the filtering function. In addition, since the air volume in the hollow inner cavity 10 of the air inlet body 1 is small, the air in the hollow inner cavity 10 can be heated to a higher temperature by the heating component 32 to achieve the highest temperature warm air, thus providing the warmest warm air.

[0050] Reference Figure 3 2. When the user needs the purification circulation fan to blow air with high wind force and air volume, the air control ring 7 is controlled to rotate relative to the air duct 6 so that the air duct ring air inlet 71 is connected to the air duct air inlet 61. At this time, the air entering the hollow inner cavity 10 from the rear air inlet 12 of the fuselage passes through the filter assembly 6 and then enters the interior, and the air entering the hollow inner cavity 10 from the front air inlet 11 of the fuselage passes through the air duct ring air inlet 71 and the air duct air inlet 61 and then enters the air duct 6. Due to the resistance of the filter assembly 8, the air entering the air duct 6 after passing through the air duct ring air inlet 71 and the air duct air inlet 61 is more than the air entering the interior through the filter assembly 8. At this time, the air entering the interior of the fuselage 1 is sufficient. Therefore, the purification circulation fan has a large wind force, a large air volume, a long air outlet distance, a good cooling experience, and low noise, and high flexibility in use. At this time, due to the large wind force and large air volume, it has the greatest cooling effect.

[0051] In this embodiment, refer to Figure 3 , Figure 5 , Figure 6 , this kind of cold and warm air purification circulation fan with adjustable air inlet also includes an air control ring driving device, which includes a rotary drive motor 9, a rotary drive gear 91 is provided on the output shaft of the rotary drive motor 9, and a rotary drive rack 92 is provided on the air control ring 7 to match the rotary drive gear 91, and the rotary drive rack 92 is meshed with the rotary drive gear 91. The rotary drive motor 9 can drive the air control ring 7 to rotate relative to the air duct 6 through the rotary drive gear 91 and the rotary drive gear 92. In application, when the air volume needs to be adjusted, the control device of the purification circulation fan controls the operation of the rotary drive motor 9, and the rotary drive motor 9 drives the rotary drive gear 91 to rotate, and the rotary drive gear 91 drives the air control ring 7 to rotate through the rotary drive rack 92, and then the rotating air control ring 7 is used to control the air intake volume to achieve automatic control.

[0052] In terms of specific assembly structure, refer to Figure 5 , Figure 6 The rotary drive motor 9 is installed on the outer wall of the air duct 6, and the rotary drive rack 92 is arranged on the outer wall of the air control ring 7. The rotary drive rack 92 includes a rack connecting part and a rack part. The rack connecting part is fixedly connected to the air control ring 7, and the rack part is provided with teeth meshing with the rotary drive gear 91. In this embodiment, the rotary drive motor 9 is a stepping motor.

[0053] In some other embodiments, the rotary drive motor 9 may be disposed on the air control ring 7, and the rotary drive rack 92 may be disposed on the air duct 6, which may be disposed as required during specific implementation.

[0054] In some embodiments, reference Figure 2 , Figure 3 The motor bracket 2 includes a bracket mounting ring plate 21, a bracket intermediate grid plate 22, and a connecting grid 23 connected between the bracket mounting ring plate 21 and the bracket intermediate grid plate 22. The bracket mounting ring plate 21 is used to be directly or indirectly fixedly connected to the fuselage 1, and the fan 3 is fixedly mounted on the bracket intermediate grid plate 22. The bracket intermediate grid plate 22 includes a grid and a fan mounting seat in the middle position, and the fan 3 is mounted on the fan mounting seat. The bracket intermediate grid plate 22 has grid holes for air to pass through. The connecting grid 23 is inclined backward in an arc shape, and there is a grid hole between two adjacent connecting grids 23 for ventilation.

[0055] In some embodiments, reference Figure 3 , Figure 4 The fuselage internal connection ring plate 14 is provided inside the fuselage 1, and the rear side wall of the bracket mounting ring plate 21 abuts against the front side wall of the fuselage internal connection ring plate 14 and is fixedly connected to the fuselage internal connection ring plate 14. The fuselage internal connection ring plate 14 is a component for mounting the motor bracket 3. The fuselage internal connection ring plate 14 also forms a partition plate between the fuselage front air inlet 11 and the fuselage rear air inlet 12 in the internal cavity 10 of the fuselage 1, so that the air entering the fuselage 1 from the fuselage front air inlet 11 and the fuselage rear air inlet 12 do not circulate with each other.

[0056] In some embodiments, reference Figure 2 , Figure 3 The filter assembly 8 is a cylindrical filter device, which is sleeved inside the fuselage 1 where the rear air inlet 12 is provided, and there is an empty space between the outer wall of the filter assembly 8 and the rear inner wall of the fuselage 1 where the rear air inlet 12 is provided, and the bracket mounting ring plate 21 and the connecting grille 23 form a step outside the motor bracket 2, the front end of the filter assembly 8 is mounted at the step, and the rear end of the filter assembly 8 abuts against the rear cover 5. The filter assembly 8 can adopt an existing known filter device, and the implementer can select a suitable type according to specific needs.

[0057] In some embodiments, reference Figure 3 , Figure 4 The air duct 6 is located between the rear end of the air outlet net 4 and the front end of the motor bracket 3. The rear end of the air duct 6 has an air duct connection portion 62 and is fixedly connected to the bracket mounting ring plate 21 of the motor bracket 2 through the air duct connection portion 62. The motor bracket 2 is a mounting component of the air duct 6, and the air duct 6 is indirectly fixedly connected to the fuselage 1 through the motor bracket 2.

[0058] In some embodiments, reference Figure 2 The front end outer wall of the air duct 6 has an annular recess 63, the air control ring 7 is rotatably mounted on the annular recess 63 of the air duct 6, and the air duct air inlet 61 of the air duct 6 is arranged at the annular recess 63. There is an empty space between the outer wall of the air control ring 7 and the front inner wall of the fuselage 1 having the fuselage front air inlet 11. The air duct air inlet 61 and the air control ring air inlet 71 are both long strip-shaped through holes extending along the axial direction of the fuselage. When the air control ring 7 rotates relative to the air duct 6, the air duct air inlet 61 and the air control ring air inlet 71 switch between the state of mutual connection and the state of mutual dislocation and isolation, and the air intake volume can be adjusted by using this switching function.

[0059] In some embodiments, the rear cover 5 is detachably disposed at the rear port portion of the hollow inner cavity 10 of the fuselage 1, and the inner wall of the rear cover 5 has a rear cover internal ring plate 51, and the rear cover internal ring plate 51 forms a rear cover step on the rear cover, and the rear end of the filter assembly 8 is supported at the rear cover step. Since the filter assembly 8 is a filtering device with a certain thickness and a certain weight, in order to prevent the rear end of the filter assembly 8 from being deformed due to its own gravity or external impact during long-term use, the rear end of the filter assembly 8 is supported by the rear cover step on the rear cover 5 to ensure that the filter assembly 8 is not easily deformed or damaged.

[0060] In some embodiments, the rear end of the rear cover 5 is recessed inward to form a rear cover handle 52. By providing the rear cover handle 52, it is easy to disassemble the rear cover and carry the entire circulation fan. The rear cover 5 is provided with a rear cover mounting buckle 53, and the inner side of the rear end of the fuselage 1 is provided with a rear cover buckle groove. The rear cover mounting buckle 53 is fastened to the rear cover buckle groove and allows the rear cover 5 to be detachably mounted on the rear end of the fuselage 1. In some other embodiments, the implementer can also select other suitable connection structures according to needs to achieve detachable connection between the rear cover 5 and the fuselage 1.

[0061] In some embodiments, the air outlet net 4 includes an air outlet net outer ring plate 41 and an air outlet net grille 42 connected to the air outlet net outer ring plate 41, the air outlet net outer ring plate 41 extends backward with an air outlet net installation buckle 43, the inner side of the fuselage 1 is provided with a positioning step 15 and an air outlet net buckle slot 16 that matches the air outlet net installation buckle 43, the rear end of the air outlet net outer ring plate 41 is matched and installed at the positioning step 15, the air outlet net installation buckle 43 is buckled in the air outlet net buckle slot 16 and makes the air outlet net 4 detachably connected to the fuselage 1. When the air outlet net installation buckle 43 is fastened in the air outlet net buckle slot 16, the air outlet net 4 is detachably installed with the fuselage 1. At this time, the air outlet net outer ring plate 41 of the air outlet net 4 is correspondingly installed at the positioning step 15 of the fuselage 1. In some other embodiments, the implementer can also select other suitable connection structures according to needs to realize the detachable connection between the air outlet net 4 and the fuselage 1.

[0062] In some embodiments, the air outlet net 4 has an air duct top pressure plate 44 extending backward from the rear end of the air outlet net outer ring plate 41, and the air duct top pressure plate 44 abuts against the front end of the air duct 6. When the air outlet net 4 is installed on the fuselage 1, the air duct top pressure plate 44 presses the air duct 6 toward the motor bracket 2.

[0063] In some embodiments, the heating component 32 is arranged between the fan 3 and the fan blades 31, and the heating component 32 includes a heating mounting seat located in the middle and a heating wire extending from the heating mounting seat. The heating mounting seat has a through hole in the middle position and the through hole is passed through the output shaft of the fan 3. The heating component 32 is located in the inner cavity of the air duct 6.

[0064] In some embodiments, the base 100 includes a base body and a support arm 101, and the support arm 101 is rotatably connected to the fuselage 1 through a rotating shaft. The base body can be a support with an electric rotation function or a hand rotation function, and can specifically adopt an existing known support setting form. The implementer can select a suitable support type according to needs. A rotation limit device and an angle fixing device can be set at the rotating shaft. The fuselage 1 can be limited to rotate within a certain angle range through an active limit device, and the angle fixing device is used to limit the fuselage to a suitable angle. The angle fixing device can adopt a damping type, an elastic buckle type, or other consistent devices, which will not be repeated here.

[0065] Embodiment 2:

[0066] Reference Figure 7 , Figure 8 , Fig. 9 This embodiment is basically the same as embodiment 1, except that:

[0067] In this embodiment, the air control ring 7 extends outward with a rotating paddle 72 for driving it to rotate relative to the air control ring 7. The rotating paddle 72 passes through the fuselage 1 and extends to the outside of the fuselage 1. The fuselage 1 is provided with a paddle passing slot 13 adapted to the rotating paddle 72. The paddle passing slot 13 is a long strip slot. In this embodiment, the rotating paddle 72 is provided to replace the rotating drive motor 9, the rotating drive gear 91, and the rotating drive rack 92 in the embodiment 1, so as to simplify the structure and reduce the cost. In application, the rotating paddle 72 is manually pulled to drive the air control ring 7 to rotate, thereby adjusting the air intake size of the circulation fan.

[0068] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A cold and warm air purification circulation fan with adjustable air inlet, characterized in that: include: A fuselage (1), the fuselage (1) having a hollow inner cavity (10) extending from front to back, the fuselage (1) being provided with a fuselage front air inlet (11) and a fuselage rear air inlet (12) communicating with the hollow inner cavity (10) of the fuselage (1); A motor bracket (2), the motor bracket (2) being installed in the hollow inner cavity (10) of the fuselage (1); A fan (3), the fan (3) being arranged at a central position of the motor bracket (2), the output shaft of the fan (3) extending toward the front end of the fuselage (1) and the output shaft of the fan (3) being provided with fan blades (31); A heating component (32), the heating component (32) being arranged in the hollow inner cavity (10) of the body (1), and the heating component (32) being located behind the fan blade (31); An air outlet net (4), the air outlet net (4) being arranged at a front end outlet of the hollow inner cavity (10) of the fuselage (1); A rear cover (5), the rear cover (5) being arranged at a rear end entrance of the hollow inner cavity (10) of the fuselage (1); an air duct (6), the air duct (6) being arranged in the hollow inner cavity (10) of the fuselage (1), the air duct (6) being located between the air outlet net (4) and the motor bracket (2), the air duct (6) being provided with air duct inlet holes (61) evenly distributed in the circumferential direction, the air duct inlet holes (61) corresponding to the air inlet holes (11) at the front of the fuselage; an air control ring (7), the air control ring (7) being arranged in the hollow inner cavity (10) of the fuselage (1), the air control ring (7) being rotatably sleeved on the outer periphery of the air duct (6), the air control ring (7) being provided with an air control ring air inlet hole (71) adapted to the air duct air inlet hole (61), and when the air control ring (7) and the air duct (6) rotate relative to each other, the air duct air inlet hole (61) and the air control ring air inlet hole (71) are connected to each other or isolated from each other; A filter assembly (8), wherein the filter assembly (8) is arranged in the hollow inner cavity (10) of the fuselage (1) and the position of the filter assembly (8) corresponds to the rear air inlet hole (12) on the fuselage (1).

2. The cold and warm air purification circulation fan with adjustable air inlet according to claim 1, characterized in that: The invention also comprises an air control ring driving device, wherein the air control ring driving device comprises a rotary drive motor (9), the output shaft of the rotary drive motor (9) is provided with a rotary drive gear (91), the air control ring (7) is provided with a rotary drive rack (92) matching the rotary drive gear (91), the rotary drive rack (92) and the rotary drive gear (91) are meshed with each other, and the rotary drive motor (9) can drive the air control ring (7) to rotate relative to the air duct (6) through the rotary drive gear (91) and the rotary drive gear (92).

3. A cold and warm air purification circulation fan with adjustable air inlet according to claim 2, characterized in that: The rotary drive motor (9) is mounted on the outer wall of the air duct (6), and the rotary drive rack (92) is arranged on the outer wall of the air control ring (7). The rotary drive rack (92) comprises a rack connecting portion and a rack portion. The rack connecting portion is fixedly connected to the air control ring (7), and the rack portion is provided with teeth that mesh with the rotary drive gear (91).

4. The cold and warm air purification circulation fan with adjustable air inlet according to claim 1, characterized in that: The air control ring (7) has a rotating paddle (72) extending outwardly for driving the air control ring (7) to rotate relative to the air control ring (7); the rotating paddle (72) passes through the fuselage (1) and extends to the outside of the fuselage (1); and a paddle passing slot (13) adapted to fit the rotating paddle (72) is opened on the fuselage (1).

5. The cold and warm air purification circulation fan with adjustable air inlet according to claim 1, characterized in that: The motor bracket (2) comprises a bracket mounting ring plate (21), a bracket intermediate grid plate (22), and a connecting grid (23) connected between the bracket mounting ring plate (21) and the bracket intermediate grid plate (22); the bracket mounting ring plate (21) is used for being directly or indirectly fixedly connected to the fuselage (1); and the fan (3) is fixedly mounted on the bracket intermediate grid plate (22).

6. The cold and warm air purification circulation fan with adjustable air inlet according to claim 5, characterized in that: An internal fuselage connecting ring plate (14) is arranged inside the fuselage (1), and the rear side wall of the bracket mounting ring plate (21) abuts against the front side wall of the internal fuselage connecting ring plate (14) and is fixedly connected to the internal fuselage connecting ring plate (14).

7. The cold and warm air purification circulation fan with adjustable air inlet according to claim 5, characterized in that: The filter assembly (8) is a cylindrical filter device. The filter assembly (8) is sleeved inside the interior of the fuselage (1) where the rear air inlet hole (12) is provided. There is an empty space between the outer wall of the filter assembly (8) and the rear inner wall of the fuselage (1) where the rear air inlet hole (12) is provided. The bracket mounting ring plate (21) and the connecting grille (23) form a step outside the motor bracket (2). The front end of the filter assembly (8) is mounted at the step, and the rear end of the filter assembly (8) abuts against the rear cover (5).

8. The cold and warm air purification circulation fan with adjustable air inlet according to claim 5, characterized in that: The air duct (6) is located between the rear end of the air outlet network (4) and the front end of the motor bracket (3); the rear end of the air duct (6) has an air duct connecting portion (62) and is fixedly connected to the bracket mounting ring plate (21) of the motor bracket (2) via the air duct connecting portion (62).

9. The cold and warm air purification circulation fan with adjustable air inlet according to claim 1, characterized in that: The front end outer wall of the air duct (6) has an annular recess (63), the air control ring (7) is rotatably mounted on the annular recess (63) of the air duct (6), and there is an empty space between the outer wall of the air control ring (7) and the front inner wall of the fuselage (1) where the fuselage front air inlet (11) is opened.

10. The cold and warm air purification circulation fan with adjustable air inlet according to claim 1, characterized in that: The rear cover (5) is detachably arranged at the rear port portion of the hollow inner cavity (10) of the fuselage (1), and the inner wall of the rear cover (5) has a rear cover internal ring plate (51), and the rear cover internal ring plate (51) forms a rear cover step position on the rear cover, and the rear end of the filter assembly (8) is supported on the rear cover step position.

11. The cold and warm air purification circulation fan with adjustable air inlet according to claim 1, characterized in that: The rear end of the rear cover (5) is recessed inward to form a rear cover handle (52), a rear cover mounting buckle (53) is provided on the rear cover (5), a rear cover buckle groove is provided on the inner side of the rear end of the fuselage (1), and the rear cover mounting buckle (53) is fastened to the rear cover buckle groove so that the rear cover (5) can be detachably mounted on the rear end of the fuselage (1).

12. The cold and warm air purification circulation fan with adjustable air inlet according to claim 1, characterized in that: The air outlet net (4) comprises an air outlet net external ring plate (41) and an air outlet net grille (42) connected to the air outlet net external ring plate (41); the air outlet net external ring plate (41) is provided with an air outlet net mounting buckle (43) extending backward; a positioning step (15) and an air outlet net buckle groove (16) matching the air outlet net mounting buckle (43) are provided on the inner side of the fuselage (1); the rear end of the air outlet net external ring plate (41) is matched and mounted on the positioning step (15); the air outlet net mounting buckle (43) is buckled in the air outlet net buckle groove (16) and enables the air outlet net (4) to be detachably connected to the fuselage (1).

13. The cold and warm air purification circulation fan with adjustable air inlet according to claim 1, characterized in that: The air outlet net (4) has an air duct top pressure plate (44) extending backwards from the rear end of the air outlet net outer ring plate (41), and the air duct top pressure plate (44) abuts against the front end of the air duct (6).

14. The cold and warm air purification circulation fan with adjustable air inlet according to claim 1, characterized in that: The heating component (32) is arranged between the fan (3) and the fan blade (31), and the heating component (32) includes a heating mounting seat located in the middle and a heating wire extending from the heating mounting seat. The heating mounting seat has a through hole in the middle and the through hole is penetrated on the output shaft of the fan (3). The heating component (32) is located in the inner cavity of the air duct (6).

15. The cold and warm air purification circulation fan with adjustable air inlet according to claim 1, characterized in that: The air duct air inlet hole (61) and the air control ring air inlet hole (71) are both long strip-shaped through holes extending along the axial direction of the fuselage.

16. The cold and warm air purification circulation fan with adjustable air inlet according to claim 1, characterized in that: It also comprises a base (100), wherein the base (100) comprises a base body and a support arm (101), and the support arm (101) is rotatably connected to the body (1) via a rotating shaft.

Images