Cold and warm air purification circulating fan with adjustable air inlet

Abstract

The utility model discloses a cold and warm air purification circulating fan with an adjustable air inlet, which comprises a fan body, a fan blade, a fan blade, a fan blade, a fan blade, a fan blade, a fan blade, a fan blade and a fan blade, 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 utility model relates to a purification circulation fan, in particular to a cold and warm air purification circulation fan with an adjustable air inlet. Background Art

[0002] The circulation fan with purification function and heating function is a widely used household appliance, which has both the functions of cold and hot fans and air purification, and is more and more favored by consumers.

[0003] The existing cold and warm air purification circulation fan adds a high-efficiency filtration module or other filtration devices at the air inlet end of the cold and warm fan, so as to realize the functions of blowing cold air or warm air and purifying air. However, there are problems with the existing cold and warm air purification circulation fan, mainly manifested as follows: since a high-efficiency filtration module or other filtration devices are added at the air inlet of the circulation fan, the air inlet of the circulation fan is narrowed, greatly reducing the air inlet area of the air inlet, and thus increasing the motor load. And due to the above reasons, no matter whether the user selects cold air or warm air, the circulation fan has problems such as high noise, small wind speed, small air volume, short air supply distance, etc. during operation, which greatly affects the user experience. The above-mentioned various defects seriously limit the further popularization and application of this kind of product.

[0004] In view of this, the purpose of the utility model is to provide a new technical solution to solve the existing technical problems. Content of the Utility Model

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

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows:

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

[0008] A fuselage, the fuselage has a hollow inner cavity that penetrates from front to back, and the fuselage is provided with a front air inlet hole and a rear air inlet hole of the fuselage that communicate with the hollow inner cavity of the fuselage;

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

[0010] A fan, the fan is arranged at the central position of the motor bracket, the output shaft of the fan extends towards the front end of the fuselage, and a fan blade is arranged on the output shaft of the fan;

[0011] A heating component, which 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, which is arranged at the front end outlet of the hollow inner cavity of the fuselage;

[0013] A rear cover, which is arranged at the rear end inlet of the hollow inner cavity of the fuselage;

[0014] An air duct, which 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 circumferentially uniformly distributed air duct air inlet holes are formed on the air duct, and the air duct air inlet holes correspond to the front part air inlet holes of the fuselage;

[0015] A wind control ring, which is arranged in the hollow inner cavity of the fuselage, the wind control ring is rotatably sleeved on the outer periphery of the air duct, and wind control ring air inlet holes adapted to the air duct air inlet holes are formed on the wind control ring. When the wind control ring rotates relative to the air duct, the air duct air inlet holes and the wind control ring air inlet holes are communicated with each other or isolated from each other;

[0016] A filtering component, which is arranged in the hollow inner cavity of the fuselage and the position of the filtering component corresponds to the rear part air inlet holes on the fuselage.

[0017] As the first improvement of the above technical solution, a wind control ring driving device is further included. The wind control ring driving device includes a rotary driving motor, a rotary driving gear is arranged on the output shaft of the rotary driving motor, a rotary driving rack is arranged on the wind control ring, the rotary driving rack meshes with the rotary driving gear, and the rotary driving motor can drive the wind control ring to rotate relative to the air duct through the rotary driving gear and the rotary driving rack.

[0018] As a further improvement of the above technical solution, the rotary driving motor is installed on the outer side wall of the air duct, the rotary driving rack is arranged on the outer side wall of the wind control ring, the rotary driving rack includes a rack connecting part and a rack part, the rack connecting part is fixedly connected with the wind control ring, and teeth meshing with the rotary driving gear are arranged on the rack part.

[0019] As the second implementation improvement of the above technical solution, a rotary dial for driving the wind control ring to rotate relative to the wind control ring extends outward from the wind control ring. The rotary dial passes through the fuselage and extends to the outside of the fuselage, and a dial passing groove adapted to the rotary dial is formed on the fuselage.

[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 for directly or indirectly fixedly connecting to the fuselage, and the fan is fixedly installed on the bracket intermediate grid plate.

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

[0022] As a further improvement of the above technical solution, the filtering component is a cylindrical filtering device. The filtering component is sleeved inside the fuselage where a rear air inlet hole of the fuselage is provided. There is a spaced space between the outer wall of the filtering component and the rear inner wall of the fuselage where the rear air inlet hole of the fuselage is opened. The bracket mounting ring plate and the connecting grid form a stepped position outside the motor bracket. The front end of the filtering component is installed at the stepped position, and the rear end of the filtering component 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 net and the front end of the motor bracket. The rear end of the air duct has an air duct connecting portion and is fixedly connected to the bracket mounting ring plate of the motor bracket through the air duct connecting portion.

[0024] As a further improvement of the above technical solution, an annular recess is provided on the outer wall of the front end of the air duct. The air control ring is rotatably sleeved at the annular recess of the air duct. There is a spaced space between the outer wall of the air control ring and the front inner wall of the fuselage where a front air inlet hole of the fuselage is opened.

[0025] As a further improvement of the above technical solution, the rear cover is detachably provided at the rear port position of the hollow inner cavity of the fuselage. The inner wall of the rear cover has an inner ring plate of the rear cover. The inner ring plate of the rear cover forms a stepped position of the rear cover on the rear cover. The rear end of the filtering component is supported at the stepped position of the rear cover.

[0026] As a further improvement of the above technical solution, the rear end portion of the rear cover is recessed inward to form a rear cover handle. Rear cover mounting buckles are provided on the rear cover. Rear cover buckle grooves are provided on the inner side of the rear end of the fuselage. The rear cover mounting buckles are fastened to the rear cover buckle grooves, and the rear cover is detachably mounted at the rear end of the fuselage.

[0027] As a further improvement of the above technical solution, the air outlet net includes an outer ring plate of the air outlet net and an air outlet grid connected inside the outer ring plate of the air outlet net. The outer ring plate of the air outlet net extends backward with an air outlet net installation buckle. A positioning step and an air outlet net buckle groove for cooperating with the air outlet net installation buckle are provided on the inner side of the fuselage. The rear end of the outer ring plate of the air outlet net is fitted and installed at the positioning step, and the air outlet net installation buckle is buckled in the air outlet net buckle groove so that the air outlet net is detachably connected to the fuselage.

[0028] As a further improvement of the above technical solution, the air outlet net extends backward with an air duct top pressing plate at the rear end of its outer ring plate of the air outlet net, and the air duct top pressing 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 blade. The heating component includes a heating installation seat in the middle and a heating wire extending from the heating installation seat. A through hole is provided in the middle position of the heating installation seat and the through hole is sleeved on the output shaft of the fan. The heating component is located in the inner cavity of the air duct.

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

[0031] As a further improvement of the above technical solution, a base is further included. The base includes a base main 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 utility model are as follows: The present utility model provides a warm and cold air purification circulation fan with adjustable air inlets. This warm and cold air purification circulation fan with adjustable air inlets can drive the air control ring to rotate, and utilize the air control ring and the air duct to adjust the air volume passing through the air inlet holes of the air control ring and the air inlet holes of the air duct, thereby controlling the air volume entering the air duct, and having the advantage of flexible use. When it is necessary to achieve the maximum purification function or provide the warmest warm air, rotate the air control ring to close the air inlet holes of the air control ring and the air inlet holes of the air duct. At this time, all the air volume needs to pass through the filtration of the filter assembly, having the advantage of maximizing the purification effect, and also being able to achieve the function of supplying the warmest hot air; when a large air volume is required, rotate the air control ring to open the air inlet holes of the air control ring and the air inlet holes 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 is filtered by the filter assembly. In this operating condition, it has the advantages of strong wind force, large air volume, long air supply distance, and low noise, and adjusts the temperature of the warm air by adjusting the air control ring. Therefore, this warm and cold air purification circulation fan with adjustable air inlets can flexibly combine the advantages of filtration and purification, large air volume, strong wind force, long air supply distance, and low noise, and solve the different needs of users for cold and warm air of the warm and cold air purification circulation fan by adjusting the air inlets, giving the best experience to customers. Consumers have high flexibility during use, better use experience, better market competitiveness, and are convenient for the further promotion of this product.

[0033] In summary, this warm and cold air purification circulation fan with adjustable air inlets solves the technical defects of the existing warm and cold purification circulation fans, such as small wind force, small air volume, short blowing distance, high noise, poor flexibility in use, and poor use experience. Description of the Drawings

[0034] The following further describes the present utility model in conjunction with the drawings and embodiments.

[0035] Figure 1 is an assembly schematic diagram of a warm and cold air purification circulation fan with adjustable air inlets in Embodiment 1 of the present utility model;

[0036] Figure 2 is a structural split diagram of a warm and cold air purification circulation fan with adjustable air inlets in Embodiment 1 of the present utility model;

[0037] Figure 3 is a sectional view and air flow direction schematic diagram of a warm and cold air purification circulation fan with adjustable air inlets in the open state of the air control ring in Embodiment 1 of the present utility model;

[0038] Figure 4 is a sectional view and air flow direction schematic diagram of a warm and cold air purification circulation fan with adjustable air inlets in the closed state of the air control ring in Embodiment 1 of the present utility model;

[0039] Figure 5It is an internal assembly schematic diagram of a warm and cold air purification circulation fan with an adjustable air inlet in the open state of the air control ring in Embodiment 1 of the present utility model;

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

[0041] Figure 7 It is a sectional view of a warm and cold air purification circulation fan with an adjustable air inlet in Embodiment 2 of the present utility model;

[0042] Figure 8 It is an internal assembly schematic diagram of a warm and cold air purification circulation fan with an adjustable air inlet in Embodiment 2 of the present utility model

[0043] Figure 9 It is a structural disassembly diagram of the fuselage, air control ring, air duct and air outlet net in Embodiment 2 of the present utility model. Detailed implementation manners

[0044] The concept, specific structure and technical effects of the present utility model will be clearly and completely described below in conjunction with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present utility model. 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 more optimal connection structure that can be formed by adding or reducing connection accessories according to the specific implementation situation. Each technical feature in the creation of the present utility model can be interactively combined without mutual contradiction and conflict, referring to Figures 1-9 .

[0045] Embodiment 1:

[0046] Referring to Figures 1-6 , the present utility model provides:

[0047] A warm and cold air purification circulation fan with an adjustable air inlet, comprising: a fuselage 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 this technical solution, the body 1 has a hollow inner cavity 10 that penetrates from front to back. The body 1 is provided with a front air inlet hole 11 and a rear air inlet hole 12 of the body that communicate with the hollow inner cavity 10 of the body 1. The motor bracket 2 is installed in the hollow inner cavity 10 of the body 1. The fan 3 is arranged at the central position of the motor bracket 2. The output shaft of the fan 3 extends towards the front end of the body 1, and a fan blade 31 is arranged on the output shaft of the fan 3. The fan blade 31 is fixedly installed at the foremost end of the output shaft of the fan 3 through a fan blade fixing nut 311. The foremost end of the output shaft of the fan 3 is provided with a threaded portion for cooperating with the fan blade fixing nut 311. The heating component 32 is arranged in the hollow inner cavity 10 of the body 1, and the heating component 32 is located behind the fan blade 31. The air outlet net 4 is arranged at the front end outlet of the hollow inner cavity 10 of the body 1. The rear cover 5 is arranged at the rear end inlet of the hollow inner cavity 10 of the body 1. The air duct 6 is arranged in the hollow inner cavity 10 of the body 1. The air duct 6 is located between the air outlet net 4 and the motor bracket 2. The air duct 6 is provided with air duct inlet holes 61 that are circumferentially and evenly distributed, and the air duct inlet holes 61 correspond to the front air inlet hole 11 of the body. The air control ring 7 is arranged in the hollow inner cavity 10 of the body 1. The air control ring 7 is rotatably sleeved on the outer periphery of the air duct 6. The air control ring 7 is provided with air control ring inlet holes 71 that are adapted to the air duct inlet holes 61. When the air control ring 7 rotates relative to the air duct 6, the air duct inlet holes 61 and the air control ring inlet holes 71 communicate with each other or are isolated from each other. The filtering component 8 is arranged in the hollow inner cavity 10 of the body 1, and the position of the filtering component 8 corresponds to the rear air inlet hole 12 on the body 1.

[0049] In this technical solution, referring to Figure 4 , after the purification circulation fan starts to work, the fan 3 drives the fan blade 31 to rotate, driving the air to blow forward after passing through the air outlet grille 4. When warm air is needed, the heating component 32 works and heats the air. Therefore, the air blown out by the fan 3 driving the fan blade 31 is warm air. When the user needs to achieve the maximum purification effect at the highest temperature of the warm air, the air control ring 7 is driven to rotate relative to the air duct 6, so that the air duct ring inlet holes 71 and the air duct inlet holes 61 are misaligned and isolated from each other. At this time, the air entering the hollow inner cavity 10 from the front air inlet hole 11 of the body cannot enter the air duct 6 through the air duct ring inlet holes 71 and the air duct inlet holes 61. All the air entering the hollow inner cavity 10 needs to enter through the rear air inlet hole 12 of the body and pass through the filtering process of the filtering component 8 before entering the air duct. In this case, almost all the air needs to be filtered, maximizing the filtering function. In addition, since the air volume entering the hollow inner cavity 10 of the body 1 is small, the small air volume enables the air in the hollow inner cavity 10 to be heated to a relatively high temperature by the heating component 32, achieving the warm air at the highest temperature, and providing the warmest warm air at this time.

[0050] Refer to Figure 3 、When the user needs to blow air with strong wind force and large air volume of the purification circulation fan, control the air control ring 7 to rotate relative to the air duct 6, so that the air inlet hole 71 of the air duct ring is communicated with the air inlet hole 61 of the air duct. At this time, the air entering the hollow inner cavity 10 from the air inlet hole 12 at the rear of the fuselage passes through the filtration of the filtration component 6 and then enters the interior. The air entering the hollow inner cavity 10 from the air inlet hole 11 at the front of the fuselage enters the interior of the air duct 6 after passing through the air inlet hole 71 of the air duct ring and the air inlet hole 61 of the air duct. Due to the resistance of the filtration component 8, more air enters the interior of the air duct 6 after passing through the air inlet hole 71 of the air duct ring and the air inlet hole 61 of the air duct than the air entering the interior through the filtration component 8. At this time, enough air enters the fuselage 1. Therefore, the purification circulation fan has strong wind force, large air volume, long air outlet distance, good cooling experience, low noise and high use flexibility. At this time, due to the strong wind force and large air volume, it has the maximum cold air effect.

[0051] In this embodiment, refer to Figure 3 、 Figure 5 、 Figure 6 This kind of purification circulation fan with adjustable air inlets also includes an air control ring driving device. The air control ring driving device includes a rotary driving motor 9. A rotary driving gear 91 is arranged on the output shaft of the rotary driving motor 9. A rotary driving rack 92 that cooperates with the rotary driving gear 91 is arranged on the air control ring 7. The rotary driving rack 92 meshes with the rotary driving gear 91. The rotary driving motor 9 can drive the air control ring 7 to rotate relative to the air duct 6 through the rotary driving gear 91 and the rotary driving rack 92. In application, when it is necessary to adjust the air volume, the control device of the purification circulation fan controls the rotary driving motor 9 to operate. The rotary driving motor 9 drives the rotary driving gear 91 to rotate. The rotary driving gear 91 drives the air control ring 7 to rotate through the rotary driving rack 92, and then uses the rotating air control ring 7 to control the air intake volume to achieve automatic control.

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

[0053] In some other embodiments, the rotary driving motor 9 can also be arranged on the air control ring 7, and the rotary driving rack 92 can be arranged on the air duct 6, which can be set according to needs during specific implementation.

[0054] In some embodiments, referring to 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 for directly or indirectly fixedly connecting with the fuselage 1, and the fan 3 is fixedly installed on the bracket intermediate grid plate 22. The bracket intermediate grid plate 22 includes a grid and a fan mounting seat at the middle position, and the fan 3 is installed 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 in an arc shape backward, and there are grid holes between adjacent two connecting grids 23 for ventilation.

[0055] In some embodiments, referring to Figure 3 , Figure 4 , an inner connecting ring plate 14 of the fuselage 1 is arranged inside the fuselage 1. The rear side wall of the bracket mounting ring plate 21 abuts against the front side wall of the inner connecting ring plate 14 of the fuselage and is fixedly connected with the inner connecting ring plate 14 of the fuselage. The inner connecting ring plate 14 of the fuselage is a component for installing the motor bracket 3. The inner connecting ring plate 14 of the fuselage also forms a partition between the front air inlet hole 11 and the rear air inlet hole 12 of the fuselage in the inner cavity 10 of the fuselage 1, so that the air entering the fuselage 1 from the front air inlet hole 11 and the rear air inlet hole 12 of the fuselage does not flow to each other.

[0056] In some embodiments, referring to Figure 2 , Figure 3 , the filter assembly 8 is a cylindrical filter device. The filter assembly 8 is sleeved inside the fuselage 1 where the rear air inlet hole 12 of the fuselage is provided. There is an air separation space between the outer wall of the filter group 8 and the rear inner wall of the fuselage 1 where the rear air inlet hole 12 of the fuselage is opened. The bracket mounting ring plate 21 and the connecting grid 23 form a stepped position outside the motor bracket 2, and the front end of the filter assembly 8 is installed at the stepped position, and the rear end of the filter assembly 8 abuts against the rear cover 5. The filter assembly 8 can adopt existing known filter devices, and implementers can select appropriate types according to specific needs.

[0057] In some embodiments, referring to 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 connecting portion 62 and is fixedly connected with the bracket mounting ring plate 21 of the motor bracket 2 through the air duct connecting portion 62. The motor bracket 2 is a mounting component for the air duct 6, and the air duct 6 is indirectly fixedly connected with the fuselage 1 through the motor bracket 2.

[0058] In some embodiments, referring to Figure 2 , an annular recess 63 is provided on the outer wall of the front end of the air duct 6. The air control ring 7 is rotatably sleeved at the annular recess 63 of the air duct 6, and the air duct air inlet hole 61 of the air duct 6 is provided at the annular recess 63. There is a space between the outer wall of the air control ring 7 and the front inner wall of the fuselage 1 where the front air inlet hole 11 of the fuselage is opened. Both the air duct air inlet hole 61 and the air control ring air inlet hole 71 are elongated 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 hole 61 and the air control ring air inlet hole 71 are switched between a state of being interconnected and a state of being misaligned and isolated, and the air intake volume can be adjusted by using this switching function.

[0059] In some embodiments, the rear cover 5 is detachably provided at the rear port position of the hollow inner cavity 10 of the fuselage 1. The inner wall of the rear cover 5 has a rear cover inner ring plate 51. The rear cover inner ring plate 51 forms a rear cover step on the rear cover, and the rear end of the filter assembly 8 is supported on the rear cover step. Since the filter assembly 8 is a filter device with a certain thickness and a certain weight, in order to prevent the rear end of the filter assembly 8 from deforming 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 convenient 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, so that the rear cover 5 is 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 the detachable connection between the rear cover 5 and the fuselage 1.

[0061] In some embodiments, the air outlet grille 4 includes an outer ring plate 41 of the air outlet grille and an air outlet grid 42 connected within the outer ring plate 41 of the air outlet grille. The outer ring plate 41 of the air outlet grille extends backward with an air outlet grille installation buckle 43. A positioning step 15 and an air outlet grille buckle groove 16 for cooperating with the air outlet grille installation buckle 43 are provided inside the fuselage 1. The rear end of the outer ring plate 41 of the air outlet grille is fitted and installed at the positioning step 15, and the air outlet grille installation buckle 43 is buckled in the air outlet grille buckle groove 16, enabling the detachable connection between the air outlet grille 4 and the fuselage 1. When the air outlet grille installation buckle 43 is fastened in the air outlet grille buckle groove 16, the air outlet grille 4 and the fuselage 1 are detachably installed. At this time, the outer ring plate 41 of the air outlet grille 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 achieve the detachable connection between the air outlet grille 4 and the fuselage 1.

[0062] In some embodiments, a duct top pressing plate 44 extends backward from the rear end of the outer ring plate 41 of the air outlet grille 4, and the duct top pressing plate 44 abuts against the front end of the duct 6. When the air outlet grille 4 is installed on the fuselage 1, the duct top pressing plate 44 presses the duct 6 against the motor bracket 2.

[0063] In some embodiments, the heating component 32 is arranged between the blower 3 and the fan blade 31. The heating component 32 includes a heating installation seat in the middle and heating wires extending from the heating installation seat. A through hole is provided at the middle position of the heating installation seat and the through hole is sleeved on the output shaft of the blower 3. The heating component 32 is located in the inner cavity of the duct 6.

[0064] In some embodiments, the base 100 includes a base main body and a support arm 101. The support arm 101 is rotatably connected to the fuselage 1 through a rotating shaft. The base main body can be a support with an electric rotation function or a hand rotation function, and specifically, the existing known support setting forms can be adopted. The implementer specifically selects a suitable support type according to needs. A rotation limiting device and an angle fixing device can be provided at the rotating shaft. The active limiting device can limit the rotation of the fuselage 1 within a certain angle range, and the angle fixing device is mainly used to limit the fuselage at a suitable angle. The angle fixing device can adopt devices such as a damping type and an elastic buckle type, which will not be elaborated here.

[0065] Embodiment 2:

[0066] Refer to Figure 7 、 Figure 8 、 Figure 9 This embodiment is basically the same as Embodiment 1, and the difference lies in:

[0067] In this embodiment, the air control ring 7 extends outwardly with a rotary paddle 72 for driving its rotation relative to the air control ring 7. The rotary paddle 72 passes through the fuselage 1 and extends to the outside of the fuselage 1. A paddle through slot 13 adapted to the rotary paddle 72 is formed on the fuselage 1. The paddle through slot 13 is a long strip slot. In this embodiment, by providing the rotary paddle 72 to replace components such as the rotary drive motor 9, the rotary drive gear 91, and the rotary drive rack 92 in Embodiment 1, the structure can be simplified and the cost can be reduced. During application, the air control ring 7 is driven to rotate by manually turning the rotary paddle 72, so as to adjust the air intake size of the circulation fan.

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

Claims

1. A warm and cold air purifying circulation fan with adjustable air inlet, characterized in that, Comprising: A fuselage (1), the fuselage (1) having a hollow inner cavity (10) that penetrates through the front and rear, and the fuselage (1) is provided with a front air inlet hole (11) and a rear air inlet hole (12) of the fuselage that communicate 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 blower (3), the blower (3) being disposed at the central position of the motor bracket (2), the output shaft of the blower (3) extending towards the front end of the fuselage (1) and a fan blade (31) being provided on the output shaft of the blower (3); A heating component (32), the heating component (32) being disposed in the hollow inner cavity (10) of the fuselage (1), the heating component (32) being located behind the fan blade (31); An air outlet net (4), the air outlet net (4) being disposed at the front end outlet of the hollow inner cavity (10) of the fuselage (1); A rear cover (5), the rear cover (5) being disposed at the rear end inlet of the hollow inner cavity (10) of the fuselage (1); An air duct (6), the air duct (6) being disposed 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), and the air duct (6) being provided with circumferentially uniformly distributed air duct inlet holes (61), the air duct inlet holes (61) corresponding to the front air inlet hole (11) of the fuselage; A wind control ring (7), the wind control ring (7) being disposed in the hollow inner cavity (10) of the fuselage (1), the wind control ring (7) being rotatably sleeved on the outer periphery of the air duct (6), and the wind control ring (7) being provided with wind control ring inlet holes (71) adapted to the air duct inlet holes (61), when the wind control ring (7) rotates relative to the air duct (6), the air duct inlet holes (61) communicate with or isolate from the wind control ring inlet holes (71); A filtering component (8), the filtering component (8) being disposed in the hollow inner cavity (10) of the fuselage (1) and the position of the filtering component (8) corresponding to the rear air inlet hole (12) on the fuselage (1).

2. The adjustable inlet air temperature and cold air purification circulation fan according to claim 1, characterized in that: It further includes a wind control ring driving device, the wind control ring driving device including a rotation driving motor (9), a rotation driving gear (91) being provided on the output shaft of the rotation driving motor (9), a rotation driving rack (92) being provided on the wind control ring (7) to cooperate with the rotation driving gear (91), the rotation driving rack (92) meshing with the rotation driving gear (91), and the rotation driving motor (9) being capable of driving the wind control ring (7) to rotate relative to the air duct (6) through the rotation driving gear (91) and the rotation driving rack (92).

3. The adjustable air inlet cold and warm air purification circulation fan according to claim 2, wherein: The rotation driving motor (9) is installed on the outer side wall of the air duct (6), the rotation driving rack (92) is provided on the outer side wall of the wind control ring (7), the rotation driving rack (92) includes a rack connecting portion and a rack portion, the rack connecting portion is fixedly connected to the wind control ring (7), and teeth meshing with the rotation driving gear (91) are provided on the rack portion.

4. The adjustable air inlet cold and warm air purification circulation fan according to claim 1, characterized in that: The air control ring (7) extends outwardly with a rotary paddle (72) for driving its rotation relative to the air control ring (7). The rotary paddle (72) passes through the fuselage (1) and extends to the outside of the fuselage (1). A paddle through slot (13) adapted to the rotary paddle (72) is provided on the fuselage (1).

5. The adjustable air inlet cold and warm air purification circulation fan according to claim 1, wherein: The motor bracket (2) includes a bracket mounting ring plate (21), a bracket intermediate grille plate (22), and a connecting grille (23) connected between the bracket mounting ring plate (21) and the bracket intermediate grille plate (22). The bracket mounting ring plate (21) is used for directly or indirectly fixedly connecting with the fuselage (1), and the air blower (3) is fixedly installed on the bracket intermediate grille plate (22).

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

7. An adjustable air inlet cold and warm air purification circulation fan according to claim 5, characterized in that: The filter assembly (8) is a cylindrical filtering device. The filter assembly (8) is sleeved inside the fuselage (1) where a rear air inlet hole (12) of the fuselage is provided. There is a spaced 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) of the fuselage is provided. The bracket mounting ring plate (21) and the connecting grille (23) form a stepped position outside the motor bracket (2). The front end of the filter assembly (8) is installed at the stepped position, and the rear end of the filter assembly (8) abuts against the rear cover (5).

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

9. The adjustable air inlet cold and warm air purification circulation fan according to claim 1, characterized in that: The front outer wall of the air duct (6) has an annular recess (63). The air control ring (7) is rotatably sleeved at the annular recess (63) of the air duct (6). There is a spaced space between the outer wall of the air control ring (7) and the front inner wall of the fuselage (1) where a front air inlet hole (11) of the fuselage is provided.

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

11. The adjustable inlet air cold and warm air purification circulation fan according to claim 1, characterized in that: The rear end portion of the rear cover (5) is recessed inwardly to form a rear cover handle (52). Rear cover mounting buckles (53) are provided on the rear cover (5). Rear cover buckle grooves are provided on the inner side of the rear end of the fuselage (1). The rear cover mounting buckles (53) are fastened to the rear cover buckle grooves, so that the rear cover (5) is detachably installed at the rear end of the fuselage (1).

12. The adjustable air inlet cold and warm air purification circulation fan according to claim 1, characterized in that: The air outlet grille (4) includes an outer ring plate (41) of the air outlet grille and an air outlet grid (42) connected inside the outer ring plate (41) of the air outlet grille. The outer ring plate (41) of the air outlet grille extends backward with an air outlet grille installation buckle (43). A positioning step (15) and an air outlet grille buckle groove (16) for cooperating with the air outlet grille installation buckle (43) are provided inside the fuselage (1). The rear end of the outer ring plate (41) of the air outlet grille is fitted and installed at the positioning step (15), and the air outlet grille installation buckle (43) is buckled in the air outlet grille buckle groove (16) to detachably connect the air outlet grille (4) to the fuselage (1).

13. The adjustable inlet air temperature control and purification circulating fan according to claim 1, characterized in that: At the rear end of the outer ring plate (41) of the air outlet grille (4), an air duct top pressing plate (44) extends backward, and the air duct top pressing plate (44) abuts against the front end of the air duct (6).

14. The adjustable inlet air temperature control and purification circulating fan according to claim 1, characterized in that: The heating component (32) is arranged between the fan (3) and the fan blade (31). The heating component (32) includes a heating installation seat in the middle and heating wires extending from the heating installation seat. A through hole is provided in the middle position of the heating installation seat, and the through hole is sleeved 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 adjustable air inlet warm and cold air purification circulation fan according to claim 1, wherein: Both the air duct air inlet hole (61) and the air control ring air inlet hole (71) are long strip-shaped through holes extending along the axial direction of the fuselage.

16. The adjustable air inlet warm and cold air purification circulation fan according to claim 1, characterized in that: It further includes a base (100). The base (100) includes a base main body and a support arm (101), and the support arm (101) is rotatably connected to the fuselage (1) through a rotating shaft.

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