CN216431874U - Air guide device and warmer with same - Google Patents

Abstract

The utility model relates to a heating installation technical field specifically is an air ducting and have its room heater. The room heater air outlet department is provided with air ducting, includes: the air collecting cover is provided with an air inlet, an air outlet and a first accommodating space arranged between the air inlet and the air outlet; the air guide disc is arranged in the first accommodating space, and a first annular air guide channel is arranged on the air guide disc; and the driving end of the driving mechanism is connected with the air guide disc, and drives the air guide disc to move away from the air collecting cover so as to separate the air outlet from the outer periphery of the air guide disc and form a second annular air guide channel between the air outlet and the outer periphery of the air guide disc, or drives the air guide disc to move towards the air collecting cover so as to be accommodated in the first accommodating space, so that the air outlet is hermetically connected with the outer periphery of the air guide disc. The utility model provides a current air ducting can't realize concentrating the problem of wind-guiding.

Description

Air guide device and warmer with same

Technical Field

The utility model relates to a heating installation technical field specifically is an air ducting and have its room heater.

Background

An air guide device is arranged at an air outlet of a conventional bathroom top air heating device, and is generally of a multi-group parallel flap structure, and the air guide function in a single swing direction can be realized by controlling the flap angle. The air guide device with the structure has the following defects: the pendulum page structure wind-guiding direction is single, has the wind-guiding dead angle at the both ends of pendulum page length direction, and the pendulum page mostly is synchronous swing angle unified, can't realize concentrating the wind-guiding function.

SUMMERY OF THE UTILITY MODEL

The utility model provides a current air ducting can't realize concentrating the problem of wind-guiding, provides an air ducting and has its room heater.

An air guide device comprising:

the air collecting cover is provided with an air inlet, an air outlet and a first accommodating space arranged between the air inlet and the air outlet;

the air guide disc is arranged in the first accommodating space, and at least one first annular air guide channel is arranged on the air guide disc;

and the driving end of the driving mechanism is connected with the air guide disc and is suitable for driving the air guide disc to move away from the air collecting cover so as to enable the air outlet to be separated from the outer periphery of the air guide disc, and a second annular air guide channel is formed between the air outlet and the outer periphery of the air guide disc, or the driving mechanism drives the air guide disc to move towards the air collecting cover so as to be accommodated in the first accommodating space, so that the air outlet is hermetically connected with the outer periphery of the air guide disc.

Optionally, the air inlet of the air collecting hood is of a structure converging towards the center, the air outlet is of a structure diffusing towards the periphery, and the air inlet and the air outlet are in smooth transition connection.

Optionally, the air guide plate is disc-shaped, and the first annular air guide channel is uniformly distributed along the center of the air guide plate.

Optionally, the driving mechanism is a motor, and a driving end of the driving mechanism is connected with the center of the air guide disc and forms an avoiding with the first annular air guide channel.

Optionally, included angles between the plurality of first annular air guide channels and the vertical direction gradually increase from the center to the outer edge.

Optionally, an included angle between the second annular air guiding channel and the vertical direction is greater than an included angle between the first annular air guiding channel and the vertical direction, which is close to the second annular air guiding channel.

A warmer comprises a body, wherein an air outlet of the body is provided with the air guide device.

Optionally, the body includes: the box body is provided with a second accommodating space, a fan, an air deflector, a PTC heating element and an air deflector are arranged in the second accommodating space, and the fan is arranged at one end of the second accommodating space; the air deflector is arranged at an interval with the fan, an airflow channel spirally facing the other end of the second accommodating space is formed between the air deflector and the fan, and the PTC heating element is arranged in the airflow channel between the fan and the other end of the second accommodating space; the air guide sheets are arc-shaped, are arranged in parallel, are arranged at the other end of the second accommodating space, and are provided with inlets and outlets, the inlets face the airflow channel, and the outlets face the air inlet of the air collecting cover.

Optionally, the opening of the box body is connected with an air collecting plate, a fan air inlet and an air collecting cover mounting opening are formed in the air collecting plate, the fan air inlet is opposite to the center of the fan, and the air collecting cover mounting opening is in matched connection with the periphery of the outer edge of the air collecting cover;

the air collecting plate is connected with a panel at intervals, a heater air inlet and a heater air outlet are formed in the air collecting plate, the heater air inlet is opposite to the fan air inlet, and the heater air outlet is connected with the outer periphery of an air outlet of the air collecting cover in a matched mode.

Optionally, the method further includes:

a temperature sensor disposed at one side of the PTC heating element;

and the control part is respectively connected with the temperature sensor and the driving mechanism.

The technical scheme of the utility model, following advantage has:

1. the utility model provides an air guide device, a wind collecting cover is provided with an air inlet, an air outlet and a first accommodating space between the air inlet and the air outlet; the air guide disc is arranged in the first accommodating space, and at least one first annular air guide channel is arranged on the air guide disc; the driving end of the driving mechanism is connected with the air guide disc and is suitable for driving the air guide disc to move away from the air collecting cover so as to enable the air outlet to be separated from the outer periphery of the air guide disc, and a second annular air guide channel is formed between the air outlet and the outer periphery of the air guide disc, or the air guide disc is driven to move towards the air collecting cover so as to be accommodated in the first accommodating space, so that the air outlet is hermetically connected with the outer periphery of the air guide disc; the air guide disc is driven by the driving mechanism to move towards or away from the air collection cover, the opening and closing of the outer periphery of the air guide disc and the second annular air guide channel at the air outlet of the air collection cover are controlled, and then the air flow passing through the second annular air guide channel flows out through the first annular air guide channel in a centralized mode, and the purpose of centralized air guide is achieved.

2. The utility model provides an air guide device, the air inlet of the wind collecting cover is of a structure converging towards the center, the air outlet is of a structure diffusing towards the periphery, and the air inlet and the air outlet are in smooth transition connection; the air inlet is converged towards the center, and the air flow can be better guided to flow through the first air guide channel in a centralized manner when the second annular air guide channel is closed; the air outlet is a structure diffusing to the periphery, and can form a horn mouth-shaped air flow channel diffusing to the periphery with the outer periphery of the air guide disc, when the second annular air guide channel is opened, the air flow is favorably diffused to the periphery along the second annular air guide channel, and the air flow coverage area is increased.

3. The utility model provides an air guide device, an air guide disc is disc-shaped, and a plurality of first annular air guide channels are uniformly distributed along the center of the air guide disc; the driving mechanism is a motor, and the driving end of the driving mechanism is connected with the center of the air guide disc and forms avoidance with the first annular air guide channel; a plurality of first annular air guide channels are uniformly distributed on the disc-shaped air guide disc along the center, air flow can be uniformly distributed in the first annular channels and uniformly blown to all directions of the circumference, discomfort caused by overlarge outlet flow velocity is effectively relieved, and meanwhile, the air supply range is further expanded; the driving shaft of the motor is connected with the center of the disc and forms a shelter with the air guide channel, so that the phenomenon that air flow is blocked to enter the first annular air guide channel or unnecessary disturbance is caused is avoided.

4. The utility model provides an air guide device, the included angle between a plurality of first annular air guide channels and the vertical direction is gradually increased from the center to the outer edge; the first annular air guide channel on the disc-shaped air guide disc can blow the air flow from the center to the periphery in a diffusion angle, so that the coverage area of the air flow guided by the air guide disc is increased.

5. The utility model provides an air guide device, the included angle between the second annular air guide channel and the vertical direction is larger than the included angle between the first annular air guide channel close to the second annular air guide channel and the vertical direction; when the second annular air guide channel is opened, an air guide channel with a larger angle is formed between the second annular air guide channel and the air collecting cover, and air flow can be guided to be blown to a larger range.

6. The utility model provides a warmer, including the body, its air outlet department is provided with the utility model provides an air ducting, air ducting can open or close second annular wind-guiding passageway as required, concentrates on the warm wind and blows in the first annular wind-guiding passageway, promotes the directional warm wind of short time and blows the ability, or closes second annular wind-guiding passageway, and increase warm wind coverage area realizes the purpose of evenly rising temperature in the great scope.

7. The utility model provides a warmer, a body comprises a box body, a fan, an air deflector, a PTC heating element and an air deflector are arranged in the box body; the fan is arranged at one end of the second accommodating space, the air deflector is spirally connected with the fan and the second accommodating space in a transition manner and forms an air flow channel, the air deflectors are arc-shaped and are arranged in parallel, the air inlets of the air deflectors face the air flow channel, and the outlets of the air deflectors face the air inlet of the air collecting cover; the opening part of the box body is connected with an air collecting plate, the air collecting plate and the air collecting plate are connected with a panel at intervals, and the air collecting plate and the panel are respectively provided with a port matched with the air inlet of the fan, the air outlet of the heater and the outer periphery of the air collecting cover; the plurality of arc-shaped air guide sheets which are arranged in parallel mutually guide the airflow blown by the fan into the wind collecting cover after the airflow is converted in angle, so that the uneven air outlet of the air outlet is avoided; form fan air inlet route between aerofoil, panel, box body and the wind-collecting cover to install the wind-collecting cover between aerofoil and panel, separate the air inlet route and the air-out route of room heater, avoid two air currents to interfere each other. The air guide sheet structure can effectively avoid the phenomenon that high-speed fluid accelerated by a fan blade is gathered at the tail part of the spiral airflow channel to cause uneven distribution of the fluid in the air channel and the possibility of large-area vortex generation, thereby achieving the effect of rectifying and breaking the vortex; adopt the guide vane between spiral airflow channel and room heater export air ducting, cooperation water conservancy diversion air guide disc forms high-efficient air supply channel, and the deep type convergent gradually-widening structure of wind-collecting cover accords with the venturi effect, and deep cavity low pressure effectively improves air supply rate, reduces flow in-process calorific loss, and it is leading-in to the air guide disc with the warm braw better simultaneously.

8. The utility model provides a warmer, which also comprises a temperature sensor and a control piece which are arranged at one side of the PTC heating element, wherein the control piece is respectively connected with the temperature sensor and a driving mechanism; the temperature sensor is arranged 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 piece, and the control piece controls the driving mechanism to open or close the second annular air guide channel according to the measurement result, so that the switching of a centralized air guide mode or a large-range uniform air guide mode is realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is an exploded view of the heater structure provided by the present invention;

FIG. 2 is a longitudinal sectional view of the heater provided by the present invention;

FIG. 3 is a schematic view of a second annular air guiding passage in a closed state;

fig. 4 is a schematic view of an air guiding plate.

Description of reference numerals:

the air conditioner comprises a box body 1, an air guide sheet 2, a driving mechanism 3, an air collecting cover 4, an air guide disc 5, an air collecting plate 6, a panel 7, a PTC heating element 8, a temperature sensor 9, a fan 10 and an air guide plate 11.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

As shown in fig. 2 to 4, an embodiment of the air guiding device includes a wind collecting cover 4 and an air guiding plate 5 movably connected to the wind collecting cover 4 by a driving mechanism 3.

The wind-collecting cover 4 is provided with an air inlet, an air outlet and a first accommodating space arranged between the air inlet and the air outlet; specifically, the air inlet is of a funnel-shaped structure converging towards the center, the air outlet is of a horn mouth-shaped structure diffusing towards the periphery, and the air inlet and the air outlet are in transitional connection through smooth arc surfaces.

The air guide disc 5 is arranged in the first accommodating space, and at least one first annular air guide channel is arranged on the air guide disc; specifically, a first annular air guide channel is symmetrically arranged on the disc-shaped air guide disc 5 along the center, and a circular central air guide channel is further arranged at the center.

The driving end of the driving mechanism 3 is connected with the air guide disc 5, specifically, the driving mechanism 3 is a linear motor, the driving end of the linear motor is connected with the central air guide channel of the air guide disc 5 through a connecting rib, and the driving end of the linear motor and the central air guide channel form a shelter with the first annular air guide channel, so that eddy current caused in the first annular air guide channel is avoided. 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 periphery of the air guide disc 5, a second annular air guide channel is formed between the air outlet and the outer periphery of the air guide disc 5, or the air guide disc 5 is driven to move towards the air collecting cover 4 to be contained in the first containing space, and the air outlet is connected with the outer periphery of the air guide disc 5 in a sealing mode. Specifically, the central air guide channel is arranged in the vertical direction, the first annular air guide channel and the vertical direction form an included angle inclined towards the periphery, the outer peripheral side surface of the air guide disc 5 and the vertical direction form an included angle inclined towards the outer periphery, a second annular air guide channel is formed between the outer peripheral side surface of the air guide disc 5 and the air outlet of the air collecting cover 4, and the included angle between the second annular air guide channel and the vertical direction is larger than the included angle between the first annular air guide channel and the vertical direction.

As an alternative implementation manner, a plurality of first annular air guiding channels are uniformly distributed along the center of the air guiding disc 5, specifically, included angles between the plurality of first annular air guiding channels and the vertical direction are gradually increased from the center to the outer edge, and the included angles are all smaller than included angles between the second annular air guiding channels 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 shown in fig. 4, the inner wall arc outlet angle of the second annular air guiding channel is α 1, the inner wall arc outlet angles of the first annular air guiding channel closest to the outer periphery are α 2 and α 3, and the inner wall arc outlet angle of the central air guiding channel is α 4. In order to avoid the problem that the transitional outward expansion of the outlet warm air cannot smoothly reach the area near the ground, the angle of 170 degrees is more than or equal to alpha 1, more than or equal to alpha 2, more than or equal to alpha 3, more than or equal to alpha 4, 360-degree omnibearing wide-angle air supply is realized, and meanwhile, the area of the warm air cage cover area in the horizontal direction is enlarged. In addition, the multichannel reposition of redundant personnel structure can effectively alleviate because of near the export that the air current concentrates and leads to the obvious problem of sense of blowing, and each passageway gradually widens the type structure and can turn into the static pressure with export part dynamic pressure, and then improves air supply structure air supply capacity, makes the export warm braw blow farther, and indoor temperature rise is more even.

As shown in fig. 1 to 4, the present invention provides a specific implementation manner of a warmer with the above air guiding device, which comprises a body, the body comprises:

the box body 1 is provided with a second accommodating space, a fan 10, an air deflector 11, a PTC heating element 8 and an air deflector 2 are arranged in the second accommodating space, and the fan 10 is arranged at one end of the second accommodating space; specifically, the fan 10 is arranged at one end in the rectangular box body, the air deflector 11 is led out along the tangential direction of one end, close to the box body, of the fan and extends to the other end of the box body in a spiral mode, and a spiral air flow channel is formed between the air deflector and the fan. The PTC heating element 8 is arranged in the airflow channel; the air guide plates 2 are arc-shaped, are arranged in parallel, are arranged at the other end of the second accommodating space, and are provided with inlets and outlets, the inlets face the air flow channel, the outlets face the air inlet of the air collecting cover 4, and specifically, the arc-shaped air guide plates 2 which are parallel to each other are in transitional connection from the air flow channel to the air inlet of the air collecting cover 4 to form a turning air flow channel, so that the air flow accelerated by the fan 10 and heated by the PTC heating element 8 is turned from the horizontal direction to the vertical direction, and is introduced into the air inlet of the air collecting cover 4.

Furthermore, the opening of the box body 1 is connected with an air collecting plate 6, a fan air inlet and an air collecting cover mounting opening are formed in the air collecting plate, the fan air inlet is opposite to the center of the fan 10, and the air collecting cover mounting opening is matched and connected with the periphery of the outer edge of the air collecting cover 4;

6 interval connections of wind-collecting plate have panel 7, and it has room heater air intake and room heater air outlet to open on it, the room heater air intake with the fan air intake sets up relatively, the room heater air outlet with the cooperation of the outer peripheral edge of the air outlet of wind-collecting cover 4 is connected, and is specific the panel four corners department is equipped with the pillar, the pillar supports and is in wind-collecting plate four corners department, will through screw or buckle in the pillar the panel with wind-collecting plate interval connections. The panel the wind-collecting plate the air inlet and the air outlet channel of the warmer are formed between the wind-collecting cover and the box body, the wind-collecting cover separates the two channels, and interference and disturbance formation between the air inlet and the air outlet are avoided.

Further, the PTC heating element comprises a temperature sensor 9 arranged on one side of the PTC heating element 8, and a control part which is respectively electrically or wirelessly connected with the temperature sensor 9 and the driving mechanism 3.

The utility model provides an air ducting and room heater that has it are at the during operation, fan 10 rotates, form the negative pressure at fan 10 center, the air of 1 outside of box body is via the passageway between panel 7 and the wind board 6 of collection, pass the fan air intake on the wind board 6 of collection and get into fan 10, fan blade is seen off by fan 10 tangential direction after accelerating the air, the air current after accelerating is through the spiral air current passageway between aviation baffle 11 and the fan 10, evenly distributed forms between a plurality of parallel arrangement's aviation baffle 2 turns to the air current passageway. The air flow can avoid great flow velocity loss in the spiral air flow channel, and the turning air flow channel can convert the air flow in the horizontal direction into the air flow in the vertical direction and uniformly distribute and guide the air flow to enter the air inlet of the air collecting cover 4. The PTC heating element 8 heats the air flow before the helical air flow path enters the diverted air flow path.

After the inlet air that adds hot-blast air current through wind-collecting cover 4 got into, evenly distributed was in wind-guiding disc 5's first annular wind-guiding passageway and central wind-guiding passageway, simultaneously, linear electric motor drive wind-guiding disc 5 was kept away from wind-collecting cover 4 motion to make the second annular wind-guiding passageway that forms between 5 outer peripheries of wind-guiding disc and the 4 air outlets of wind-collecting cover blow outside air current to the circumferencial direction guide, make the warm braw warp the utility model provides a can cover bigger scope behind the air ducting to evenly heat up in this coverage. When the central area is blown with warm air rapidly, the linear motor drives the air guide disc to descend, the extension length of the air guide disc is increased, so that the diffusion degree of the air flow at the outlet is reduced, but the air flow is converged to be more beneficial to rapid conveying, the area of the high-speed area at the outlet is large, the flow speed at the outlet is increased, the heat taken away by the PTC heating element in unit time is increased, the temperature is higher, and the temperature rise at the central area is faster. In addition, the driving mechanism 3 can also drive the air guide disc to ascend and enter the first accommodating space of the air collecting cover, the outer periphery of the air guide disc is hermetically connected with the air outlet of the air collecting cover, the second annular air guide channel is in a closed state, and the air inlet of the air collecting cover converging towards the center intensively guides the warm air to the first annular air guide channel and the central air guide channel. The warm air is blown along the vertical direction of the central air guide channel and is blown along the first annular air guide channel inclined to the periphery along the vertical direction, so that the effect of concentrated blowing of the warm air in the extending direction of the central line of the air guide disc and the extending direction range of the first annular air guide channel is realized. When the second annular air guide channel is completely closed, the air flow is completely converged in the first annular air guide channel and the central air guide channel, the outlet flow rate can reach the maximum, the heat taken away by the PTC heating element in unit time is the maximum, the temperature is the highest, and the warm air blowing distance is the farthest.

Because the resistance value of the PTC heating element is greatly influenced by the ambient temperature, the air outlet volume directly determines the heat quantity taken away by the PTC heating element in unit time, and the higher the temperature is, the larger the required air volume is. In order to keep the stability of the heating characteristics of the PTC heating element, the temperature sensor 9 monitors the temperature t near the PTC heating element in real time in the working process of the warmer, simultaneously transmits the monitoring result to the control piece, and the control piece controls the driving mechanism to adjust the length h of the air guide disc extending out of the air outlet of the air collection cover according to the monitoring result, so that the effective flow area of the second annular air guide channel is adjusted, and the air volume at the outlet of the air guide device is changed.

Setting a standard environment temperature t0 in the control element, and correspondingly extending the length h0 of the air guide disc out of the air outlet of the air collection cover, wherein if t0 is more than t and less than or equal to ta, h is ha; if ta is more than t and less than or equal to tb, h is hb; if tb < t, h ═ hc; if td is less than or equal to t and less than t0, h is hd; if te is less than or equal to t and less than td, h is he; if t < te, h is hf (where ta, tb, td, te, ha, hb, hc, hd, he, hf are constants, and tb > ta > t0 > td > te, hc > hb > ha > h0 > hd > te > tf).

As an alternative embodiment, the drive mechanism 3 can also be a telescopic rod or a pneumatic or hydraulic cylinder or the like.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (10)

1. An air guide device, comprising:

the air collecting cover (4) is provided with an air inlet, an air outlet and a first accommodating space arranged between the air inlet and the air outlet;

the air guide disc (5) is arranged in the first accommodating space, and at least one first annular air guide channel is arranged on the air guide disc;

the driving end of the driving mechanism (3) is connected with the air guide disc (5) and is suitable for driving the air guide disc (5) to move away from the air collecting cover (4) so as to enable the air outlet to be separated from the outer periphery of the air guide disc (5), a second annular air guide channel is formed between the air outlet and the outer periphery of the air guide disc (5), or the air guide disc (5) is driven to move towards the air collecting cover (4) to be contained in the first containing space, and the air outlet is hermetically connected with the outer periphery of the air guide disc (5).

2. The air guiding device according to claim 1, wherein: the air inlet of the air collecting cover (4) is of a structure converging towards the center, the air outlet is of a structure diffusing towards the periphery, and the air inlet is connected with the air outlet in a smooth transition mode.

3. The air guiding device according to claim 1, wherein: the air guide disc (5) is disc-shaped, and the first annular air guide channel is uniformly distributed along the center of the air guide disc (5).

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

5. The air guiding device according to claim 4, wherein: the included angle between the first annular air guide channels and the vertical direction is gradually increased from the center to the outer edge.

6. The air guiding device according to claim 5, wherein: and the included angle between the second annular air guide channel and the vertical direction is larger than the included angle between the first annular air guide channel close to the second annular air guide channel and the vertical direction.

7. A warmer comprises a body, and is characterized in that: the air guide device according to any one of claims 1 to 6.

8. The warmer of claim 7, wherein: the body includes:

the box body (1) is provided with a second accommodating space, a fan (10), an air guide plate (11), a PTC heating element (8) and an air guide sheet (2) are arranged in the second accommodating space, and the fan (10) is arranged at one end of the second accommodating space; the air deflector (11) and the fan (10) are arranged at intervals, an airflow channel spirally facing the other end of the second accommodating space is formed between the air deflector and the fan (10), and the PTC heating element (8) is arranged in the airflow channel between the fan (10) and the other end of the second accommodating space; the air guide pieces (2) are arc-shaped, are arranged in parallel, are arranged at the other end of the second accommodating space, and are provided with inlets and outlets, wherein the inlets face the airflow channel, and the outlets face the air inlet of the air collecting cover (4).

9. The warmer of claim 8, wherein: the opening part of the box body (1) is connected with an air collecting plate (6), a fan air inlet and an air collecting cover mounting opening are formed in the air collecting plate, the fan air inlet is opposite to the center of the fan (10), and the air collecting cover mounting opening is matched and connected with the periphery of the outer edge of the air collecting cover (4);

the air collecting plate (6) is connected with a panel (7) at intervals, a heater air inlet and a heater air outlet are formed in the air collecting plate, the heater air inlet is opposite to the fan air inlet, and the heater air outlet is matched and connected with the outer periphery of an air outlet of the air collecting cover (4).

10. The warmer of claim 9, wherein: further comprising:

a temperature sensor (9) provided on one side of the PTC heating element (8);

and the control part is respectively connected with the temperature sensor (9) and the driving mechanism (3).

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