Warm air blower

Abstract

A fan heater comprises a machine shell, an axial flow fan and a heater, an air inlet is formed in the bottom of the machine shell, an air outlet is formed in the peripheral wall of the top of the machine shell, the axial flow fan is arranged in the machine shell and generates air from bottom to top, the heater is used for heating the air, and a first air guide plate is arranged between the outer edge of the air outlet end of the fan and the lower edge of the air outlet. A second air guide plate is arranged between the center of the air outlet end of the fan and the upper edge of the air outlet, the air guide angle of the second air guide plate is smaller than that of the first air guide plate, the air guide angle is the included angle between the air guide plate and the horizontal plane, and a plurality of splitter plates are arranged between the first air guide plate and the second air guide plate. The splitter plates are arranged at intervals with the axis of the fan as the center. Through the arrangement of the air deflector and the guide angle, the pressure of hot air output by the fan heater is increased, diffusion of the hot air in surrounding air is accelerated, the air outlet is far away from the air inlet, the heating efficiency is improved, and the hot air output from the periphery of the fan heater is more uniform through the splitter plate.

Description

Technical Field

[0001] The present invention relates to a fan heater, in particular to a fan heater which discharges air in a circumferential direction and uses an axial flow fan to form the wind. Background Art

[0002] A heater is a type of heating device used in daily life. Based on the direction of airflow, it can be divided into directional and circumferential heaters. Circumferential heaters are also called omnidirectional heaters. Relatively speaking, circumferential heaters, due to the air outlets on the surrounding walls, can output hot air 360 degrees around them, allowing users in different directions around the heater to feel the hot air. However, this also results in an increase in the outlet area, a lower pressure on the output hot air, and a slower diffusion rate of the hot air in the surrounding air. Furthermore, circumferential heaters also have the defect of uneven airflow.

[0003] The present invention aims at improving the above-mentioned defects of the circumferential air outlet type heater. Summary of the Invention

[0004] The object of the present invention is to provide a fan heater to increase the pressure of hot air output by the fan heater and improve the uniformity of air output.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows: A fan heater, comprising: The casing has an air inlet at the bottom and an air outlet on the top wall; A fan, which is an axial flow fan, is provided inside the housing to generate wind from bottom to top; and a heater for heating the air; In which, a first air guide plate is provided between the outer edge of the air outlet end of the fan and the lower edge of the air outlet, and a second air guide plate is provided between the center of the air outlet end of the fan and the upper edge of the air outlet. The air guide angle of the second air guide plate is smaller than the air guide angle of the first air guide plate, and the air guide angle is the angle between the air guide plate and the horizontal plane. A plurality of diverter plates are provided between the first air guide plate and the second air guide plate, and the plurality of diverter plates are arranged at intervals with the axis of the fan as the center.

[0006] The first air guide plate is combined with the second air guide plate to guide the hot air to flow toward the air outlet on the casing. The guide angle of the first air guide plate and the guide angle of the second air guide plate cause the hot air to be gradually compressed in the process of flowing toward the air outlet, and the pressure gradually increases, thereby increasing the pressure of the hot air output by the heater.

[0007] The plurality of diverter plates are combined with the first air guide plate and the second air guide plate so that the hot air is dispersed to the surrounding areas during the process of flowing toward the air outlet, thereby making the hot air output from the four sides of the heater more uniform.

[0008] In some embodiments, the wind guide angle of the first wind guide plate is greater than 60 degrees and less than 85 degrees.

[0009] In some embodiments, the difference between the wind guide angle of the first wind guide plate and the wind guide angle of the second wind guide plate is greater than 10 degrees and less than 40 degrees.

[0010] In some embodiments, the diverter plate is a straight plate.

[0011] In some embodiments, the angle between adjacent diverter plates is less than 20 degrees.

[0012] In some embodiments, the wind guide surface of the second wind guide plate is an inverted conical surface, the diverter plate is connected to the conical surface, the diverter plate and the second wind guide plate are integrally formed, the diverter plate is a straight plate, and is arranged perpendicular to the conical surface.

[0013] In some embodiments, the upper end of the diverter plate has an extension portion extending toward the outside of the housing, and the height of the extension portion matches the height of the air outlet.

[0014] In some embodiments, a gap is left between the diverter plate and the first air guide plate.

[0015] In some embodiments, the air inlet is a through hole in the up and down directions.

[0016] In some embodiments, a second bracket is provided at the bottom center of the housing, the through hole is provided around the second bracket, and the center line of the fan, the center line of the second bracket, and the center line of the heater coincide with each other.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects: The introduction of the first and second air guide plates, and the relative relationship between their guide angles, increases the pressure of the hot air output from the heater, accelerating its diffusion into the surrounding air. The air outlet is positioned away from the air inlet, which improves heating efficiency. The diverter plate, combined with the first and second air guide plates, disperses the hot air as it flows toward the outlet, resulting in a more uniform output around the heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of a heater; Figure 2 A diagram of the heater with some parts removed; Figure 3 is a bottom view schematic diagram of the second air guide plate; Figure 4 This is a schematic diagram of the overall exterior of the heater; Description of the drawings: 1. Second air guide plate; 2. Diverter plate; 3. Air outlet; 4. First air guide plate; 5. Heater; 6. First bracket; 7. Fan; 8. Air inlet; 9. Second bracket; 10. Lower shell; 11. Upper shell; 12. Mounting column; 13. Extension; 14. Casing; A1. First air guide angle; A2. Second air guide angle; A3. Angle. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, if there are descriptions involving "first" or "second" in the embodiments of the present invention, the descriptions of "first" or "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0022] Combine Figures 1-4 The air heater of some embodiments includes: a casing 14 , a fan 7 , and a heater 5 .

[0023] An air inlet 8 is provided at the bottom of the casing 14 , and an air outlet 3 is provided on the peripheral wall of the top of the casing 14 .

[0024] The fan 7 is an axial flow fan. The fan 7 is arranged inside the casing 14. The air inlet end of the fan 7 faces downward and the air outlet end of the fan 7 faces upward. When the fan 7 is powered on, a suction force is generated from the bottom to the top. Under the action of this suction force, the air in the environment enters from the air inlet 8 at the bottom of the casing 14, generating wind from the bottom to the top.

[0025] The heater 5 is used to heat the wind to form hot wind. The heater 5 can be fixed on the air inlet end of the fan 7, and can also be fixed on the air outlet end of the fan 7. Both methods can heat the wind.

[0026] Heater 5 can be constructed from conventional electric heating elements such as resistance wires and PTC heating sheets. The electric heating elements can be specifically arranged around the air duct. When air passes through the duct, it is heated by the surrounding electric heating elements, forming hot air. The electric heating elements can also be arranged in the air duct, with air holes provided thereon. When air passes through the air holes on the electric heating elements, it is heated by the electric heating elements, forming hot air. Heater 5 is a conventional component of a fan heater. Its construction is conventional means for those skilled in the art and will not be described in detail in this embodiment.

[0027] A first air guide plate 4 is provided between the outer edge of the air outlet end of the fan 7 and the lower edge of the air outlet 3 , and a second air guide plate 1 is provided between the center of the air outlet end of the fan 7 and the upper edge of the air outlet 3 .

[0028] The angle between the first air guide plate 4 and the horizontal plane is referred to as the first air guide angle A1 or the air guide angle of the first air guide plate 4 .

[0029] The angle between the second air guide plate 1 and the horizontal plane is referred to as the second air guide angle A2 or the air guide angle of the second air guide plate 1 .

[0030] The second wind guide angle A2 is smaller than the first wind guide angle A1.

[0031] A plurality of diverter plates 2 are provided between the first air guide plate 4 and the second air guide plate 1 , and the plurality of diverter plates 2 are arranged at intervals with the axis of the fan 7 as the center.

[0032] The working process of the above-mentioned heater is as follows: After the fan 7 is powered on, it generates suction from the bottom up. Under the action of this suction, the air in the environment enters from the air inlet 8 at the bottom of the casing 14, generating wind from the bottom up. The wind is heated by the heater 5 to form hot air. The hot air is guided by the first air guide plate 4 and the second air guide plate 1, upward and outward, and flows to the air outlet 3 on the peripheral wall of the casing 14. It enters the environment from all sides of the heater through the air outlet 3, and heats the ambient air.

[0033] In the above embodiment, the first air guide plate 4 is combined with the second air guide plate 1 to guide and compress the hot air.

[0034] Under the guidance of the first air guide plate 4 and the second air guide plate 1 , the hot air flows from the air outlet end of the fan 2 to the air outlet 3 on the housing 14 .

[0035] Under the compression effect of the first air guide plate 4 and the second air guide plate 1, the pressure of the hot air gradually increases, and ultimately the pressure of the hot air output from the heater increases. The magnitude of the compression effect is related to the difference between the first air guide angle A1 and the second air guide angle A2. If a higher hot air pressure is required, this difference can be designed to be larger.

[0036] The plurality of diverter plates 2 are combined with the first air guide plate 4 and the second air guide plate 1 so that the hot air is dispersed to the surrounding areas during the process of flowing to the air outlet 3, thereby making the hot air output from the heater more uniform.

[0037] In the above embodiment, the introduction of the first air guide plate 4 and the second air guide plate 1, as well as the relative relationship between the guide angles of the two, increases the pressure of the hot air output by the heater, which is beneficial to accelerate the diffusion of the hot air in the surrounding air. The diverter plate 2 is combined with the first air guide plate 4 and the second air guide plate 1 to make the hot air output from the heater more uniform on all sides. In addition, the air outlet 3 is on the top peripheral wall of the casing 14, and the air inlet 8 is at the bottom of the casing 14. The air outlet 3 is far away from the air inlet 8, and the hot air output from the air outlet 3 is not easy to diffuse to the air inlet 8, which is beneficial to improve the heating efficiency. Overall, it makes the heat transfer management more scientific, reasonable and efficient.

[0038] In a specific embodiment, the housing 14 adopts a cylindrical structure. The housing 14 is composed of a lower shell 10 and an upper shell 11 . The air inlet 8 is formed on the lower shell 10 , and the air outlet 3 is formed on the peripheral wall of the upper shell 11 .

[0039] The top surface of the lower housing 10 is provided with a mounting post 12 , and the fan 7 is fixed to the mounting post 12 by screws, thereby being supported inside the housing 14 .

[0040] The top of the fan 7 is connected to the first bracket 6 by screws, and the heater 5 is fixed to the first bracket 6 and is thus supported at the air outlet end of the fan 7 .

[0041] The lower end of the first air guide plate 4 is connected to the upper end of the first bracket 6, and the upper end of the first air guide plate 4 is connected to the inner wall of the upper shell 11, supporting the first air guide plate 4 between the outer edge of the air outlet end of the fan 7 and the lower edge of the air outlet 3 on the casing 14.

[0042] The diverter plate 2 and the second air guide plate 1 are integrally formed, and the lower edge of the outer end of the diverter plate 2 is connected to the upper edge of the outer end of the first air guide plate 4, supporting the second air guide plate 1 between the center of the air outlet end of the fan 7 and the upper edge of the air outlet 3 on the casing 14.

[0043] It should be noted that the above embodiments are exemplary and should not be construed as limiting the present invention. The housing 14 may also be designed in other shapes, such as a polygonal prism. The fan 7, heater 5, first air guide plate 4, and second air guide plate 1 may also be installed in other ways, for example, by being separately connected to the housing 14.

[0044] In some preferred embodiments, the wind guide angle of the first wind guide plate 4, that is, the first wind guide angle A1, is set to be greater than 60 degrees and less than 85 degrees. For example, the first wind guide angle A1 is 70 degrees, 75 degrees, 80 degrees, etc.

[0045] In this preferred embodiment, the value of the first air guide angle A1 increases the distance between the air outlet 3 and the air inlet 8, thereby reducing the amount of hot air output from the air outlet 3 that diffuses into the air inlet 8, further improving the heating effect of the heater. Furthermore, it helps to improve the smoothness of the hot air flowing from the outlet end of the fan 7 to the air outlet 3 on the housing 14.

[0046] In some preferred embodiments, the difference between the first wind guide angle A1 and the second wind guide angle A2 is greater than 10 degrees and less than 40 degrees, for example, the difference is 20 degrees, 25 degrees, 30 degrees, 35 degrees, etc.

[0047] The difference in the wind guide angle in this preferred embodiment is conducive to the hot air flowing smoothly from the air outlet 3 to the environment, and can increase the pressure of the hot air, thereby helping to accelerate the diffusion of the hot air in the ambient air and improve the heating effect.

[0048] In some preferred embodiments, the diverter plates 2 are straight plates. In this case, all diverter plates 2 are arranged in a radial state, such as Figure 3 shown.

[0049] In other embodiments, the diverter plate 2 is an arc-shaped plate, and the bending direction of the arc-shaped plate is the same as the rotation direction of the fan blades.

[0050] The curved plate structure of the diverter plate 2 will cause the hot air to form turbulence, reducing the smoothness of the hot air output. In comparison, the straight plate structure of the diverter plate 2 will not form turbulence when the hot air passes through the diverter plate 2, which is conducive to smoother hot air output.

[0051] In some preferred embodiments, the angle A3 between adjacent diverter plates 2 is less than 20 degrees, for example, the angle A3 is 18 degrees, 12 degrees, 10 degrees, etc.

[0052] When angle A3 is within this numerical range, hot air is more easily and evenly output from the heater in a 360-degree radius. Within this numerical range, the number of diverter plates 2 is no less than 18. The larger the angle A3, the fewer the number of diverter plates 2, the smoother the hot air output and the lower the uniformity. For example, when the angle A3 between adjacent diverter plates 2 is 18 degrees, the number of diverter plates 2 is 20; when the angle A3 between adjacent diverter plates 2 is 12 degrees, the number of diverter plates 2 is 30, the smoother the hot air output and the better the uniformity; when the angle A3 between adjacent diverter plates 2 is 10 degrees, the number of diverter plates 2 is 36, the smoother the hot air output and the better the uniformity.

[0053] In some preferred embodiments, the lower surface of the second air guide plate 1, i.e., the surface facing the first air guide plate 4, is an inverted conical surface, and the diverter plate 2 is connected to the conical surface. The diverter plate 2 is integrally formed with the second air guide plate 1. The diverter plate 2 is a straight plate and is arranged perpendicular to the conical surface.

[0054] In this preferred embodiment, the number of the second air guide plate 1 is one, and the diverter plate 2 and the second air guide plate 1 are an integrated structure, which reduces the number of parts, simplifies the overall assembly steps of the heater, and helps reduce product production costs.

[0055] In some preferred embodiments, the diverter plate 2 and the second air guide plate 1 are integrally formed, and a gap is left between the diverter plate 2 and the first air guide plate 4. The upper end of the diverter plate 2 extends toward the outside of the casing 14 to form an extension portion 13, and the height of the extension portion 13 is adapted to the height of the air outlet 3 on the casing 14.

[0056] In this preferred embodiment, the gap between the outer edge of diverter plate 2 and first air guide plate 4 increases the cross-section of the air duct between the outlet end of fan 7 and outlet 3 on housing 14, improving air flow smoothness. An extension 13 is provided at the upper end of diverter plate 2, and its height matches the height of outlet 3 on housing 14. This ensures that all hot air entering outlet 3 is diverted by extension 13, further improving air flow uniformity. The combination of these two factors enhances both smoothness and uniformity.

[0057] In some preferred embodiments, the air inlet 8 is a through hole in the up and down directions, a second bracket 9 is provided at the bottom center of the casing 14, the through hole is arranged around the second bracket 9, and the center line of the fan 7, the center line of the second bracket 9 and the center line of the heater 5 coincide.

[0058] The air inlet 8 in this preferred embodiment ensures that the air inlet direction is perpendicular to the air outlet direction, further reducing the amount of hot air that spreads from the air outlet 3 to the air inlet 8. The second bracket 9 supports the housing 14 away from the ground, reducing the amount of dust drawn into the air inlet 8. These two factors combined can reduce the amount of hot air that flows back into the heater, further improving the heating effect without raising dust.

[0059] The present invention has been described in detail above through specific embodiments. Such detailed description is intended only to help those skilled in the art understand the present invention and is not to be construed as limiting the scope of protection of the present invention. Any modifications, equivalent transformations, and the like made by those skilled in the art to the above-described solutions based on the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A heater, characterized in that: include: The casing has an air inlet at the bottom and an air outlet on the top wall; The fan is an axial flow fan, which is arranged inside the housing and generates wind from bottom to top; as well as a heater for heating the air; In which, a first air guide plate is provided between the outer edge of the air outlet end of the fan and the lower edge of the air outlet, and a second air guide plate is provided between the center of the air outlet end of the fan and the upper edge of the air outlet. The air guide angle of the second air guide plate is smaller than the air guide angle of the first air guide plate, and the air guide angle is the angle between the air guide plate and the horizontal plane. A plurality of diverter plates are provided between the first air guide plate and the second air guide plate, and the plurality of diverter plates are arranged at intervals with the axis of the fan as the center.

2. The air heater according to claim 1, characterized in that: The wind guide angle of the first wind guide plate is greater than 60 degrees and less than 85 degrees.

3. The air heater according to claim 1, characterized in that: The difference between the wind guide angle of the first wind guide plate and the wind guide angle of the second wind guide plate is greater than 10 degrees and less than 40 degrees.

4. The air heater according to claim 1, characterized in that: The diverter plate is a straight plate.

5. The air heater according to claim 1, characterized in that: The angle between adjacent manifolds is less than 20 degrees.

6. The air heater according to claim 1, characterized in that: The wind guide surface of the second wind guide plate is an inverted conical surface, the diverter plate is connected to the conical surface, the diverter plate and the second wind guide plate are integrally formed, the diverter plate is a straight plate, and is arranged perpendicular to the conical surface.

7. The air heater according to claim 6, characterized in that: The upper end of the diverter plate has an extension portion extending toward the outside of the casing, and the height of the extension portion is adapted to the height of the air outlet.

8. The air heater according to claim 6, characterized in that: A gap is left between the diverter plate and the first air guide plate.

9. The air heater according to claim 1, characterized in that: The air inlet is a through hole in the up and down directions.

10. The air heater according to claim 9, characterized in that: A second bracket is provided at the bottom center of the housing, the through hole is arranged around the second bracket, and the center line of the fan, the center line of the second bracket and the center line of the heater coincide with each other.

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