An air guiding device and a heater having the same

Abstract

The present invention relates to the technical field of heating devices, and particularly to a wind guiding device and a heater having the same. A wind guiding device is provided at the air outlet of the heater, which includes: an air collecting cover having an air inlet, an air outlet, and a first accommodating space provided between the air inlet and the air outlet; a wind guiding disc disposed in the first accommodating space, on which a first annular wind guiding channel is provided; a driving mechanism, the driving end of which is connected to the wind guiding disc, driving the wind guiding disc to move away from the air collecting cover so that the air outlet is separated from the outer periphery of the wind guiding disc, and a second annular wind guiding channel is formed between the air outlet and the outer periphery of the wind guiding disc, or driving the wind guiding disc to move towards the air collecting cover to be received in the first accommodating space, so that the air outlet is hermetically connected to the outer periphery of the wind guiding disc. The present invention solves the problem that the existing wind guiding device cannot achieve centralized wind guiding.

Description

Technical Field

[0001] The present invention relates to the technical field of heating equipment, and particularly to a wind guiding device and a heater having the same. Background Art

[0002] The existing wind guiding device is provided at the air outlet of the bathroom top warm air equipment, generally a multi-group parallel swing leaf structure. By controlling the swing leaf angle, the wind guiding function in a single swing direction can be realized. The wind guiding device of this structure has the following defects: the wind guiding direction of the swing leaf structure is single, there are wind guiding dead corners at both ends in the length direction of the swing leaf, and the swing leaves mostly swing synchronously with the same angle, and the concentrated wind guiding function cannot be realized. Summary of the Invention

[0003] The present invention solves the problem that the existing wind guiding device cannot realize concentrated wind guiding, and provides a wind guiding device and a heater having the same.

[0004] A wind guiding device includes:

[0005] An air collecting cover having an air inlet, an air outlet, and a first accommodating space provided between the air inlet and the air outlet;

[0006] A wind guiding disk is arranged in the first accommodating space, and at least one first annular wind guiding channel is provided thereon;

[0007] A driving mechanism, the driving end of which is connected to the wind guiding disk, is adapted to drive the wind guiding disk to move away from the air collecting cover, so that the air outlet is separated from the outer peripheral edge of the wind guiding disk, and a second annular wind guiding channel is formed between the air outlet and the outer peripheral edge of the wind guiding disk, or drive the wind guiding disk to move towards the air collecting cover to be received in the first accommodating space, so that the air outlet is hermetically connected to the outer peripheral edge of the wind guiding disk.

[0008] Optionally, the air inlet of the air collecting cover has a structure converging towards the center, the air outlet has a structure diffusing towards the periphery, and the air inlet and the air outlet are smoothly connected in a transitional manner.

[0009] Optionally, the wind guiding disk is disk-shaped, and a plurality of the first annular wind guiding channels are uniformly distributed along the center of the wind guiding disk.

[0010] Optionally, the driving mechanism is a motor, the driving end of which is connected to the center of the wind guiding disk and forms an avoidance with the first annular wind guiding channel.

[0011] Optionally, the included angle between the plurality of the first annular wind guiding channels and the vertical direction gradually increases from the center to the outer edge.

[0012] Optionally, the included angle between the second annular wind guiding channel and the vertical direction is greater than the included angle between the first annular wind guiding channel adjacent to the second annular wind guiding channel and the vertical direction.

[0013] A heater, comprising a main body, and a wind guiding device as described above is arranged at the air outlet thereof.

[0014] Optionally, the main body includes: a box body having a second accommodation space, in which a fan, a wind guiding plate, a PTC heating element and wind guiding vanes are arranged, and the fan is arranged at one end of the second accommodation space; the wind guiding plate is arranged at an interval from the fan, and a spiral air flow channel is formed between the wind guiding plate and the fan and is oriented towards the other end of the second accommodation space, and the PTC heating element is arranged in the air flow channel between the fan and the other end of the second accommodation space; the wind guiding vanes are arc-shaped and a plurality of them are arranged in parallel, and they are arranged at the other end of the second accommodation space and have an inlet and an outlet, the inlet faces the air flow channel, and the outlet faces the air inlet of the air collecting cover.

[0015] Optionally, a wind collecting plate is connected to the opening of the box body, and a fan air inlet and an air collecting cover mounting opening are formed thereon, the fan air inlet is opposite to the central position of the fan, and the air collecting cover mounting opening is connected in a circumferential fit with the outer edge of the air collecting cover;

[0016] The wind collecting plate is connected to a panel at an interval, and a heater air inlet and a heater air outlet are formed thereon, the heater air inlet is arranged opposite to the fan air inlet, and the heater air outlet is connected in a peripheral fit with the air outlet of the air collecting cover.

[0017] Optionally, it further includes:

[0018] A temperature sensor, arranged on one side of the PTC heating element;

[0019] A control member, respectively connected to the temperature sensor and the driving mechanism.

[0020] The technical solution of the present invention has the following advantages:

[0021] 1. The wind guiding device provided by the present invention, the air collecting cover has an air inlet, an air outlet and a first accommodation space between the air inlet and the air outlet; the wind guiding disc is arranged in the first accommodation space, and at least one first annular wind guiding channel is arranged thereon; the driving end of the driving mechanism is connected to the wind guiding disc and is adapted to drive the wind guiding disc to move away from the air collecting cover, so that the air outlet is separated from the outer periphery of the wind guiding disc, and a second annular wind guiding channel is formed between the air outlet and the outer periphery of the wind guiding disc, or drive the wind guiding disc to move towards the air collecting cover to be received in the first accommodation space, so that the air outlet is hermetically connected to the outer periphery of the wind guiding disc; by driving the wind guiding disc to move towards or away from the air collecting cover by the driving mechanism, the opening and closing of the second annular wind guiding channel at the air outlet of the air collecting cover by the outer periphery of the wind guiding disc is controlled, and further the air flow passing through the second annular wind guiding channel is concentrated to flow out through the first annular wind guiding channel, achieving the purpose of concentrated wind guiding.

[0022] 2. The air guiding device provided by the present invention has an air inlet of the air collecting hood with a structure converging towards the center and an air outlet with a structure diffusing towards the periphery, and the air inlet and the air outlet are smoothly connected in a transitional manner; the air inlet converging towards the center can better guide the airflow to concentrate and flow through the first air guiding channel when the second annular air guiding channel is closed; the air outlet with a structure diffusing towards the periphery can form a trumpet-shaped air flow channel diffusing towards the periphery with the outer periphery of the air guiding disc. When the second annular air guiding channel is opened, it is beneficial for the airflow to diffuse around along the second annular air guiding channel, increasing the air flow coverage area.

[0023] 3. The air guiding device provided by the present invention has an air guiding disc in a disc shape, and a plurality of first annular air guiding channels are evenly distributed along the center of the air guiding disc; the driving mechanism is a motor, and its driving end is connected to the center of the air guiding disc and forms an avoidance with the first annular air guiding channel; a plurality of first annular air guiding channels are evenly distributed along the center on the disc-shaped air guiding disc, which can evenly distribute the airflow in the first annular channel and evenly blow it in all directions of the circumference, effectively alleviating the discomfort caused by too high an outlet flow rate, and at the same time further expanding the air supply range; the driving shaft of the motor is connected to the center of the disc and forms an avoidance with the air guiding channel, avoiding hindering the airflow from entering the first annular air guiding channel or causing unnecessary disturbances.

[0024] 4. The air guiding device provided by the present invention has the angle between a plurality of first annular air guiding channels and the vertical direction gradually increasing from the center to the outer edge; the first annular air guiding channels on the disc-shaped air guiding disc can blow the airflow from the center to the periphery at a diffusing angle, increasing the air flow coverage area guided by the air guiding disc.

[0025] 5. The air guiding device provided by the present invention has the angle between the second annular air guiding channel and the vertical direction greater than the angle between the first annular air guiding channel adjacent to the second annular air guiding channel and the vertical direction; when the second annular air guiding channel is opened, a larger-angle air guiding channel is formed with the air collecting hood, which can guide the airflow to be blown to a larger range.

[0026] 6. The heater provided by the present invention includes a main body, and the air guiding device provided by the present invention is arranged at the air outlet of the main body. The air guiding device can open or close the second annular air guiding channel as needed, concentrate the warm air in the first annular air guiding channel for blowing, improving the short-time directional warm air blowing ability, or close the second annular air guiding channel to increase the warm air coverage area, achieving the purpose of uniform heating in a larger range.

[0027] 7. The heater provided by the present invention has a main body including a box body, in which a blower, a wind guiding plate, and a PTC are arranged.

[0028] Heating element and air guide vanes; a blower is provided at one end of the second accommodation space, the air guide plate is spirally connected to the blower and the second accommodation space to form an air flow channel, the air guide vanes are arc-shaped, multiple of them are arranged in parallel, their air inlets face the air flow channel, and their outlets face the air inlet of the air collecting hood;

[0029] A wind collecting plate is connected to the opening of the box body, and a panel is connected to the wind collecting plate at an interval. The wind collecting plate and the panel are respectively provided with openings that cooperate with the air inlet of the blower, the air outlet of the heater, and the outer periphery of the air collecting hood; multiple mutually parallel arc-shaped air guide vanes evenly distribute the air flow blown by the blower into the air collecting hood after changing the angle, avoiding uneven air outlet at the air outlet; a blower air inlet passage is formed between the wind collecting plate, the panel, the box body and the air collecting hood, and the air collecting hood is installed between the wind collecting plate and the panel to separate the air inlet passage and the air outlet passage of the heater, preventing the two air flows from interfering with each other. The structure of the air guide vanes can effectively prevent the high-speed fluid accelerated by the blower blades from gathering at the tail of the spiral air flow channel, avoiding the phenomenon of uneven fluid distribution in the air duct and the generation of large-area eddies, achieving the effect of rectifying and breaking vortices; the spiral air flow channel and the air guide device at the outlet of the heater adopt air guide vanes, and cooperate with the air guiding and deflecting disc to form an efficient air supply channel. The deep and tapered structure of the air collecting hood conforms to the Venturi effect, and the deep cavity and low pressure effectively improve the air supply rate, reduce the heat loss during the flow process, and at the same time better introduce the warm air into the air guiding disc.

[0030] 8. The heater provided by the present invention further includes a temperature sensor and a control member provided on one side of the PTC heating element. The control member is respectively connected to the temperature sensor and the driving mechanism; the temperature sensor is provided on one side of the PTC heating element, can measure the ambient temperature near the PTC heating element, and transmits the measurement result to the control member. The control member controls the driving mechanism to open or close the second annular air guide channel according to the measurement result, realizing the switching between the centralized air guide mode and the large-range uniform air guide mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1 It is an exploded view of the structure of the heater provided by the present invention;

[0033] Figure 2 It is a longitudinal sectional view of the heater provided by the present invention;

[0034] Figure 3 It is a schematic diagram of the closed state of the second annular air guide channel;

[0035] Figure 4 It is a schematic diagram of the air guide disc structure.

[0036] Description of the reference numerals in the drawings:

[0037] 1 - box body, 2 - air guide vane, 3 - driving mechanism, 4 - air collecting hood, 5 - air guide disc, 6 - air collecting plate, 7 - panel, 8 - PTC heating element, 9 - temperature sensor, 10 - fan, 11 - air guide plate. Specific embodiments

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0039] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood according to specific situations.

[0041] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0042] As Figures 2 to 4 shown, a specific embodiment of the air guide device includes an air collecting hood 4 and an air guide disc 5 movably connected to the air collecting hood 4 through a driving mechanism 3.

[0043] The air collecting hood 4 has an air inlet, an air outlet, and a first accommodation space provided between the air inlet and the air outlet; specifically, the air inlet has a funnel-shaped structure converging towards the center, the air outlet has a flared structure diverging towards the periphery, and the air inlet and the air outlet are connected by a smooth arc surface in a transitional manner.

[0044] The air guide disc 5 is disposed in the first accommodation space, and at least one first annular air guide channel is provided thereon; specifically, a first annular air guide channel is symmetrically arranged along the center on the disc-shaped air guide disc 5, and a circular central air guide channel is further provided at the central part.

[0045] The driving end of the driving mechanism 3 is connected to the air guide disc 5. Specifically, the driving mechanism 3 is a linear motor, and the driving end of the linear motor is connected to the central air guide channel of the air guide disc 5 through a connecting rib, and forms an avoidance with the first annular air guide channel to avoid causing eddy currents in the first annular air guide channel. The linear motor drives the air guide disc 5 to move away from the air collecting cover 4, so that the air outlet is separated from the outer peripheral edge of the air guide disc 5, and a second annular air guide channel is formed between the air outlet and the outer peripheral edge of the air guide disc 5, or drives the air guide disc 5 to move towards the air collecting cover 4 to be received in the first accommodation space, so that the air outlet is hermetically connected to the outer peripheral edge of the air guide disc 5. Specifically, the central air guide channel is arranged in the vertical direction, the first annular air guide channel is arranged at an angle inclined towards the periphery with respect to the vertical direction, the side surface of the outer peripheral edge of the air guide disc 5 is arranged at an angle inclined towards the outer periphery with respect to the vertical direction, a second annular air guide channel is formed between the side surface of the outer peripheral edge of the air guide disc 5 and the air outlet of the air collecting cover 4, and the angle between the second annular air guide channel and the vertical direction is greater than the angle between the first annular air guide channel and the vertical direction.

[0046] As an alternative implementation manner, a plurality of the first annular air guide channels are evenly distributed along the center of the air guide disc 5. Specifically, the angles between the plurality of first annular air guide channels and the vertical direction gradually increase from the center to the outer edge, and these angles are all smaller than the angle between the second annular air guide channel and the vertical direction. Specifically, the second annular air guide channel and the plurality of first annular air guide channels have different inner wall arc angles. As Figure 4 shown, the inner wall arc outlet angle of the second annular air guide channel is α1, the inner wall arc outlet angles of the first annular air guide channels closest to the outer peripheral edge are α2, α3, and the inner wall arc outlet angle of the central air guide channel is α4. To avoid the over-expansion of the warm air at the outlet and the inability to smoothly reach the area near the ground, 170°≥α1≥α2≥α3≥α4. While realizing 360° all-round wide-angle air supply, the area of the warm air coverage area in the horizontal direction is expanded. In addition, the multi-channel diversion structure can effectively alleviate the problem of obvious blowing feeling near the outlet caused by the concentration of air flow, and the gradually expanding structure of each channel can convert part of the dynamic pressure at the outlet into static pressure, thereby improving the air supply capacity of the air supply structure, making the warm air at the outlet blow farther and the indoor temperature rise more uniform.

[0047] As Figures 1 to 4 shown, a specific implementation manner of the heater with the above air guide device provided by the present invention includes a main body, and the main body includes:

[0048] The box body 1 has a second accommodation space, in which a blower 10, a wind guide plate 11, a PTC heating element 8 and wind guide vanes 2 are arranged. The blower 10 is arranged at one end of the second accommodation space. Specifically, the blower 10 is arranged at one end of a rectangular box body, and the wind guide plate 11 extends along the tangent direction of the blower near one end of the box body and spirally extends to the other end of the box body, forming a spiral air flow channel with the blower. The PTC heating element 8 is arranged in the air flow channel. The wind guide vanes 2 are arc-shaped and a plurality of them are arranged in parallel. They are arranged at the other end of the second accommodation space and have an inlet and an outlet. The inlet faces the air flow channel, and the outlet faces the air inlet of the air collecting hood 4. Specifically, a plurality of mutually parallel arc-shaped wind guide vanes 2 are transitionally connected from the air flow channel to the air inlet of the air collecting hood 4 to form a turning air flow channel, which turns the air flow accelerated by the blower 10 and heated by the PTC heating element 8 from the horizontal direction to the vertical direction and introduces the air flow into the air inlet of the air collecting hood 4.

[0049] Further, a wind collecting plate 6 is connected to the mouth of the box body 1, and a blower air inlet and an air collecting hood mounting port are formed thereon. The blower air inlet is opposite to the central position of the blower 10, and the air collecting hood mounting port is connected in a peripheral fit with the outer edge of the air collecting hood 4.

[0050] The wind collecting plate 6 is connected to a panel 7 at intervals, and a heater air inlet and a heater air outlet are formed thereon. The heater air inlet is arranged opposite to the blower air inlet, and the heater air outlet is connected in a peripheral fit with the outer periphery of the air outlet of the air collecting hood 4. Specifically, struts are provided at the four corners of the panel, and the struts support at the four corners of the wind collecting plate. The panel is connected to the wind collecting plate at intervals through screws or buckles inside the struts. An air inlet and an air outlet passage of the heater are formed among the panel, the wind collecting plate, the air collecting hood and the box body. The air collecting hood separates the two passages to prevent interference and disturbance between the air inlet and the air outlet.

[0051] Further, a temperature sensor 9 is arranged on one side of the PTC heating element 8, and a control member is electrically connected or wirelessly connected to the temperature sensor 9 and the driving mechanism 3 respectively.

[0052] When the air guiding device provided by the present invention and the heater having the same are working, the fan 10 rotates, a negative pressure is formed in the center of the fan 10, the air outside the box body 1 passes through the passage between the panel 7 and the air collecting plate 6, and enters the fan 10 through the air inlet of the fan on the air collecting plate 6. After the fan blades accelerate the air, the air is sent out from the tangential direction of the fan 10. The accelerated air flow passes through the spiral air flow channel between the air guiding plate 11 and the fan 10, and is uniformly distributed in the turning air flow channel formed between a plurality of parallel air guiding fins 2. The air flow can avoid large flow velocity losses in the spiral air flow channel. The turning air flow channel can turn the air flow in the horizontal direction into the air flow in the vertical direction and uniformly distribute and guide it into the air inlet of the air collecting hood 4. The PTC heating element 8 heats the air flow before the spiral air flow channel enters the turning air flow channel.

[0053] After the heated air flow enters through the air inlet of the air collecting hood 4, it is uniformly distributed in the first annular air guiding channel and the central air guiding channel of the air guiding disc 5. At the same time, the linear motor drives the air guiding disc 5 to move away from the air collecting hood 4, so that the second annular air guiding channel formed between the outer peripheral edge of the air guiding disc 5 and the air outlet of the air collecting hood 4 guides the outer air flow in the circumferential direction and blows it, so that the warm air can cover a larger range after passing through the air guiding device provided by the present invention, and the temperature rises uniformly within this coverage range. When centralized air guiding is required and warm air is quickly blown in the central area, the linear motor drives the air guiding disc to descend. Although the increase in the extended length of the air guiding disc will result in a decrease in the diffusion degree of the outlet air flow, the convergence of the air flow is more conducive to its rapid transportation. The area of the high-speed area at the outlet is large, the outlet air flow velocity increases, and the heat taken away by the PTC heating element per unit time increases, and the higher its temperature, the faster the temperature rise in the central area. In addition, the driving mechanism 3 can also drive the air guiding disc to rise and enter the first accommodating space of the air collecting hood, and is hermetically connected between the outer peripheral edge and the air outlet of the air collecting hood, and the second annular air guiding channel is in a closed state. The air inlet of the air collecting hood that converges to the center concentrates the warm air into the first annular air guiding channel and the central air guiding channel. The warm air is blown vertically along the central air guiding channel and blown along the first annular air guiding channel that is inclined to the peripheral edge in the circumferential direction with respect to the vertical direction, so as to achieve the effect of concentrating the warm air blowing within the extending direction of the center line of the air guiding disc and the extending direction of the first annular air guiding channel. When the second annular air guiding channel is completely closed, all the air flow converges into the first annular air guiding channel and the central air guiding channel, the outlet air flow velocity can reach the maximum, the heat taken away by the PTC heating element per unit time is the largest, the temperature is the highest, and the blowing distance of the warm air is the farthest.

[0054] Since the resistance value of the PTC heating element is greatly affected by the ambient temperature, and the air outlet volume will directly determine the amount of heat taken away from the PTC heating element per unit time. The higher the temperature, the greater the required air volume. To maintain the stability of the heating characteristics of the PTC heating element, during the operation of the heater, the temperature sensor 9 continuously monitors the temperature t near the PTC heating element, and at the same time transmits the monitoring result to the control component. The control component controls the driving mechanism to adjust the length h of the air guide disc extending out of the air outlet of the air collecting cover according to the monitoring result, thereby adjusting the effective flow area of the second annular air guide channel, and further changing the air volume at the outlet of the air guiding device.

[0055] Set the standard ambient temperature t0 and the corresponding length h0 of the air guide disc extending out of the air outlet of the air collecting cover in the control component. If t0 < t ≤ ta, then h = ha; if ta < t ≤ tb, then h = hb; if tb < t, then h = hc; if td ≤ t < t0, then h = hd; if te ≤ t < td, then h = he; if t < te, then h = hf (where ta, tb, td, te, ha, hb, hc, hd, he, hf are all constants, and tb > ta > t0 > td > te, hc > hb > ha > h0 > hd > te > tf).

[0056] As an alternative implementation manner, the driving mechanism 3 can also be a telescopic rod, a cylinder, a hydraulic cylinder, etc.

[0057] Obviously, the above embodiments are only examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. An air guiding device, characterized in that, Comprising: An air collecting hood (4), having an air inlet, an air outlet, and a first accommodating space provided between the air inlet and the air outlet; Air guiding vanes (2), arranged upstream of the air collecting hood (4), and the air guiding vanes (2) are arc-shaped; An air guiding disc (5), arranged in the first accommodating space, and at least one through first annular air guiding channel is provided thereon; A driving mechanism (3), the driving end of which is connected to the air guiding disc (5), and is adapted to drive the air guiding disc (5) to move away from the air collecting hood (4), so that the air outlet is separated from the outer peripheral edge of the air guiding disc (5), and a second annular air guiding channel is formed between the air outlet and the outer peripheral edge of the air guiding disc (5), or drive the air guiding disc (5) to move towards the air collecting hood (4) to be received in the first accommodating space, so that the air outlet is hermetically connected to the outer peripheral edge of the air guiding disc (5).

2. The air guiding device according to claim 1, characterized in that: The air inlet of the air collecting hood (4) has a structure converging towards the center, the air outlet has a structure diffusing towards the periphery, and the air inlet and the air outlet are smoothly connected in a transitional manner.

3. The air guiding device according to claim 1, wherein: The air guiding disc (5) is disc-shaped, and a plurality of the first annular air guiding channels are evenly distributed along the center of the air guiding disc (5).

4. The air guiding device according to claim 3, characterized in that: The driving mechanism (3) is a motor, its driving end is connected to the center of the air guiding disc (5), and forms an avoidance with the first annular air guiding channel.

5. The air guiding device according to claim 4, characterized in that: The included angles of the plurality of the first annular air guiding channels with the vertical direction gradually increase from the center to the outer edge.

6. The air guiding device according to claim 5, wherein: The included angle of the second annular air guiding channel with the vertical direction is greater than the included angle of the first annular air guiding channel adjacent to the second annular air guiding channel with the vertical direction.

7. A heater, comprising a main body, characterized in that: Having the air guiding device according to any one of claims 1 to 6.

8. The heater according to claim 7, wherein: The body comprises: A box body (1), having a second accommodating space, in which a blower (10), an air guiding plate (11), a PTC heating element (8), and air guiding vanes (2) are arranged. The blower (10) is arranged at one end of the second accommodating space; the air guiding plate (11) is arranged at an interval from the blower (10), and a spiral air flow channel towards the other end of the second accommodating space is formed between the air guiding plate (11) and the blower (10). The PTC heating element (8) is arranged in the air flow channel between the blower (10) and the other end of the second accommodating space; the air guiding vanes (2) are arc-shaped, and a plurality of them are arranged in parallel with each other. They are arranged at the other end of the second accommodating space, having an inlet and an outlet. The inlet faces the air flow channel, and the outlet faces the air inlet of the air collecting hood (4).

9. The heater according to claim 8, wherein: A wind collecting plate (6) is connected to the mouth of the box body (1), and a blower air inlet and an air collecting hood mounting opening are formed thereon. The blower air inlet is opposite to the central position of the blower (10), and the air collecting hood mounting opening is connected in a peripheral matching manner with the outer edge of the air collecting hood (4); The wind collecting plate (6) is connected to a panel (7) at an interval, and a heater air inlet and a heater air outlet are formed thereon. The heater air inlet is arranged opposite to the blower air inlet, and the heater air outlet is connected in a matching manner with the outer peripheral edge of the air outlet of the air collecting hood (4).

10. The heater according to claim 9, characterized in that: Further comprising: A temperature sensor (9), arranged on one side of the PTC heating element (8); The control member is respectively connected to the temperature sensor (9) and the drive mechanism (3).

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