CN111811141A

CN111811141A - Warm-air drier

Info

Publication number: CN111811141A
Application number: CN202010773248.7A
Authority: CN
Inventors: 钟强; 唐绍科; 张毅; 谢瑞良; 周小兵; 喻辉
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2020-10-23

Abstract

The invention relates to a warm air blower, comprising: the air flow cavity comprises a plurality of sub air flow cavities which are formed in a separated mode; the shell is provided with an air inlet area and an air outlet area, a plurality of groups of air inlets are formed in the air inlet area, the air outlet area comprises a plurality of sub air outlet areas which are annularly distributed along the circumferential direction of the shell, at least one group of air outlets are formed in each sub air outlet area, the fan assembly comprises a plurality of fans, and at least one fan is arranged in each sub airflow cavity; the heating element extends along the direction passing through each sub airflow cavity; each sub-airflow cavity is at least communicated with one group of air inlets, each sub-airflow cavity is at least communicated with one group of air outlets, and the heating element is positioned between each group of air inlets and air outlets which are communicated with each other. The air flow through many forced convections comes to carry hot-blastly for a plurality of sub-air-out region departments on whole casing circumference, can make air output and air-out scope match, provides sufficient airflow for the whole circumference of casing, and holistic heating effect is preferred.

Description

Warm-air drier

Technical Field

The invention relates to the technical field of household appliances, in particular to a fan heater.

Background

The warm air blower is a warm air supply device, can be used for heating and dehumidifying in various workshops, and can also be used as a household heater. The working principle is as follows: air enters the unit from the air suction opening under the power action of the fan, is heated when flowing through the air heating element and flows out of the unit from the air outlet to form warm air, and the warm air is sent to a heating space to form indoor air circulation, so that the heating of the indoor environment is realized. However, the traditional fan heater has limited air output and poor heating performance.

Disclosure of Invention

The invention provides a warm air blower aiming at the problem of poor heating performance of the traditional warm air blower, and the warm air blower can achieve the technical effect of better heating performance.

A fan heater, the fan heater comprising:

a housing in which an airflow chamber is formed, the airflow chamber including a plurality of sub airflow chambers partitioned; the shell is provided with an air inlet area and an air outlet area, a plurality of groups of air inlets are arranged in the air inlet area, the air outlet area comprises a plurality of sub air outlet areas which are annularly distributed along the circumferential direction of the shell, at least one group of air outlets are arranged in each sub air outlet area,

the fan assembly comprises a plurality of fans, and at least one fan is arranged in each sub-airflow cavity; and

a heating member extending in a direction passing through each of the sub airflow chambers;

each sub airflow cavity is at least communicated with one group of air inlets, each sub airflow cavity is at least communicated with one group of air outlets, and the heating element is positioned between each group of air inlets and each group of air outlets, wherein each sub airflow cavity is communicated with one group of air inlets.

In the fan heater, the fan and at least part of heating elements are arranged in each sub-airflow cavity, when the fans work, a plurality of airflows flowing through the sub-airflow cavities can be formed, and then hot air can be discharged from the sub-airflow cavities, so that hot air with large air volume can be formed integrally, and the heating effect is better. And each sub-airflow cavity is communicated with one or more groups of air inlets, and each sub-airflow cavity is communicated with one or more groups of air outlets, so that when the fan in each sub-airflow cavity works, a plurality of airflow paths which are communicated with each sub-airflow cavity can be formed, meanwhile, each airflow path passes through the heating element to heat airflow flowing from the air inlets to the air outlets, and finally hot air which is discharged from the plurality of sub-airflow cavities is formed. Simultaneously, a plurality of sub-air-out regions are arranged along the circumference of casing along the annular, set up at least a set of air outlet in every sub-air-out region, from the regional department of airing exhaust of a plurality of sub-air-out in whole circumference of casing like this, the scope that the electric fan heater heated is the whole circumference of casing, is equivalent to from 360 degrees scopes air-outs of casing circumference, and the scope of heating is wider, further improves the heating performance.

In addition, a plurality of sub-air flow cavities which are communicated with the plurality of sub-air-out areas are formed inside the shell, the plurality of sub-air-out areas are arranged along the circumferential direction of the shell, so that the fans corresponding to the sub-air flow cavities are utilized, a plurality of forced convection heating paths are formed, hot air is conveyed to the plurality of sub-air-out areas in the circumferential direction of the whole shell through the plurality of forced convection air flows, the air outlet quantity can be matched with the air outlet range, sufficient air flow is provided for the whole circumferential direction of the shell, and the whole heating effect is better.

In one embodiment, each of the sub-airflow chambers includes an air duct and a main chamber, the blower is disposed in each air duct, the main chamber is communicated with the air duct, and the heating element is located in the main chamber;

the air inlet is communicated with the air duct, and the air outlet is communicated with the main cavity.

In one embodiment, the casing includes a base, an air outlet grille, a top cover and a partition plate, the air outlet grille is disposed annularly and connected between the base and the top cover, the base, the air outlet grille and the top cover enclose the airflow cavity, the partition plate is disposed in the airflow cavity to partition the airflow cavities, and the air outlet grille is provided with the plurality of sets of air outlets which are circumferentially arranged along the air outlet grille and respectively communicated with the airflow cavities.

In one embodiment, a plurality of independent air channels are formed in the base, and a plurality of main cavities are enclosed among the air outlet grille, the top cover and the partition plate;

the heating element is arranged around the inner circumference of the air outlet grille and passes through each main cavity; the base is provided with an air passing opening communicated with the air duct and the main cavity, and the air passing opening is positioned between the partition plate and the heating element.

In one embodiment, the base has a bottom wall opposite to the top cover and a side wall intersecting with the bottom wall, and the side wall is provided with a plurality of sets of air inlets respectively communicated with the plurality of air channels.

In one embodiment, the air duct extends between the air inlet and the air passing opening in an arc shape, and the air ducts are symmetrically arranged relative to the center of the base.

In one embodiment, a mounting groove is formed in a surface of the base facing the main cavity, one end of the heating element is clamped in the mounting groove, and the other end of the heating element extends into the main cavity.

In one embodiment, the air outlet grille is configured as a polygonal ring, and the heating element includes a plurality of sub-heating elements respectively disposed corresponding to each side of the polygonal ring.

In one embodiment, the air outlet grille includes a first air outlet grille, a second air outlet grille, a third air outlet grille and a fourth air outlet grille, and the first air outlet grille, the second air outlet grille, the third air outlet grille and the fourth air outlet grille are sequentially connected end to form a quadrilateral ring;

the heating member includes four sub-heating members, four sub-heating members correspond respectively first air-out grid, second air-out grid third air-out grid reaches fourth air-out grid locates in the air current intracavity.

In one embodiment, the air outlet grille is a circular ring, and the heating element is configured as a circular ring sleeved in the air outlet grille.

In one embodiment, any one of the plurality of fans is selectively turned on or off.

Drawings

FIG. 1 is a schematic structural diagram of a fan heater according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view in one direction of the fan heater of FIG. 1;

FIG. 3 is a cross-sectional view in another direction of the fan heater shown in FIG. 1;

FIG. 4 is a schematic view of a portion of a base of the fan heater shown in FIG. 1;

fig. 5 is another schematic structural view of a base of the fan heater shown in fig. 1.

100. A warm air blower; 10. a housing; 11. an airflow chamber; 112. a sub-airflow chamber; 113. an air inlet; 114. an air duct; 115. an air outlet; 116. a main chamber; 12. a base; 121. mounting grooves; 123. a card slot; 13. an air passing port; 14. an air outlet grille; 141. a first air outlet grille; 143. a second air outlet grille; 145. a third air outlet grid; 147. a fourth air outlet grille; 16. a top cover; 161. a mating groove; 18. a partition plate; 30. a fan assembly; 32. a fan; 50. a heating member; 52. and a sub-heating member.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Fig. 1 shows a schematic structural view of a fan heater 100 in an embodiment of the invention; figure 2 shows a cross-sectional view of the fan heater 100 shown in figure 1.

Referring to fig. 1, a fan heater 100 according to an embodiment of the present invention includes a housing 10, a fan assembly 30 and a heating element 50, the fan assembly 30 and the heating element 50 are disposed in the housing 10, the fan assembly 30 drives an airflow to flow through the housing 10, and the heating element 50 is disposed on a flow path of the airflow and can heat the airflow to finally form hot air blown out of the housing 10 for heating an indoor space.

An airflow chamber 11 is formed in the housing 10, the airflow chamber 11 includes a plurality of sub airflow chambers 112 partitioned to form, the fan assembly 30 includes a plurality of fans 32, at least one fan 32 is disposed in each sub airflow chamber 112, and the heating element 50 is disposed to extend in a direction passing through each sub airflow chamber 112. Equivalently, each sub-airflow cavity 112 is internally provided with the fan 32 and at least part of the heating element 50, when the plurality of fans 32 work, a plurality of airflows flowing through the plurality of sub-airflow cavities 112 can be formed, and then hot air can be discharged from the plurality of sub-airflow cavities 112, so that hot air with large air volume can be formed integrally, and the heating effect is better.

Moreover, the housing 10 has an air inlet area and an air outlet area, the air inlet area is provided with a plurality of sets of air inlets 113, and each sub airflow cavity 112 is at least communicated with one set of air inlets 113; the air outlet region comprises a plurality of sub air outlet regions which are annularly arranged along the circumferential direction of the shell 10, at least one set of air outlet 115 is formed in each sub air outlet region, each sub airflow cavity 112 is at least communicated with one set of air outlet 115, and the heating element 50 is positioned between each set of air inlet 113 and air outlet 115 which are communicated with each other. Correspondingly, each sub-airflow cavity 11 is communicated with one or more sets of air inlets 113, and each sub-airflow cavity 113 is communicated with one or more sets of air outlets 115, so that when the fan 32 in each sub-airflow cavity 113 works, a plurality of airflow paths passing through each sub-airflow cavity 113 can be formed, meanwhile, each airflow path passes through the heating element 50, the heating element 50 heats the airflow flowing from the air inlets 113 to the air outlets 115, and finally, hot air exhausted from the plurality of sub-airflow cavities 112 is formed. Meanwhile, a plurality of sub-air-out regions are annularly arranged along the circumferential direction of the shell 10, at least one set of air outlet 115 is formed in each sub-air-out region, air is exhausted from the plurality of sub-air-out regions in the whole circumferential direction of the shell 10, the heating range of the fan heater 100 is the whole circumferential direction of the shell 10, namely, air is exhausted from the 360-degree range in the circumferential direction of the shell 10, the heating range is wider, and the heating performance is further improved.

In addition, a plurality of sub-air-flow cavities 112 correspondingly communicated with the plurality of sub-air-flow regions are formed inside the casing 10, the plurality of sub-air-flow regions are arranged along the circumferential direction of the casing, so that the fans 32 corresponding to the sub-air-flow cavities 112 are utilized to form a plurality of forced convection heating paths, hot air is conveyed to the plurality of sub-air-flow regions in the circumferential direction of the whole casing through the plurality of forced convection air flows, the air outlet quantity can be matched with the air outlet range, sufficient air flow is provided for the whole circumferential direction of the casing 10, and the whole heating effect is good.

It is understood that a group of air inlets 113 is a plurality of air inlets 113 gathered together, and each group of air inlets 113 includes a plurality of air inlets 113; the air outlets 115 are a plurality of air outlets 115 gathered together, and each air outlet 115 includes a plurality of air outlets 115.

Further, each sub-airflow cavity 112 includes an air duct 114 and a main cavity 116, the blower 32 is disposed in each air duct 114, the main cavity 116 is communicated with the air duct 114, and the heating element 50 is disposed in the main cavity 116; the air inlet 113 is communicated with the air duct 114, and the air outlet 115 is communicated with the main cavity 116. Thus, the fan 32 and the heating element 50 are disposed in two spaces, and when the fan 32 operates in the air duct 114, the external air is sucked into the air duct 114 from the air inlet 113, and then the air flow is conveyed into the main cavity 116 to contact with the heating element 50 to absorb heat, so that hot air discharged from the air outlet 115 is formed. In this way, the fan 32 and the heating element 50 are separately arranged, so that the two will not affect each other during installation and design, and the air flow can be completely guided into the main cavity 116 for heating through the guiding of the air duct 114, thereby improving the overall heating performance of the fan heater 100.

In some embodiments, the casing 10 includes a base 12, an air outlet grille 14, a top cover 16 and a partition 18, the air outlet grille 14 is disposed annularly and connected between the base 12 and the top cover 16, the base 12, the air outlet grille 14 and the top cover 16 enclose the airflow cavity 11, the partition 18 is disposed in the airflow cavity 11 to separate and form a plurality of sub airflow cavities 112, and the air outlet grille 14 is provided with a plurality of sets of air outlets 115 circumferentially arranged along the air outlet grille 14 and respectively communicated with the plurality of sub airflow cavities 112. Thus, the base 12, the air outlet grille 14 and the partition plate 18 are enclosed to form a plurality of sub airflow cavities 112, and the plurality of sub airflow cavities 112 are separated by the partition plate 18, so that airflow disorder caused when the fans 32 in the plurality of sub airflow cavities 112 work simultaneously is prevented, and heat can be stably blown out. Moreover, the air outlet grille 14 is annular, and a plurality of groups of air outlets 115 respectively communicated with the plurality of sub airflow cavities 112 are arranged along the circumferential direction of the air outlet grille 14, and the air outlet grille 14 is configured to be capable of discharging air from each direction along the circumferential direction of the air outlet grille, so that the air outlet range can be improved. It is understood that the outlet grille 14 may be configured as a circular ring or a polygonal ring, and the specific shape of the ring is not limited herein.

Specifically, a plurality of independent air ducts 114 are formed inside the base 12, and the air outlet grille 14, the top cover 16 and the partition 18 enclose to form a plurality of main cavities 116; the heating element 50 is disposed around the inner circumference of the outlet grille 14 and passes through each main cavity 116, and the base 12 is provided with an air inlet 13 communicating the air duct 114 with the main cavity 116. Equivalently, an air duct 114 is formed inside the base 12, a main cavity 116 is formed inside the air outlet grille 14, and the air duct 114 is communicated with the main cavity 116 through the air inlet 13, so that a complete sub-airflow cavity 112 is formed for guiding airflow. And, the plurality of air ducts 114 and the plurality of main cavities 116 are communicated with each other through the air passing openings 13, respectively, to form a plurality of sub airflow cavities 112. Meanwhile, the air vent 13 is located between the partition 18 and the heating element 50, so that the air flow in the air duct 114 entering the main chamber 116 through the air vent 13 passes through the heating element 50 first and then is exhausted from the air vent 13.

Alternatively, the air inlet 13 is disposed close to the partition 18 and far away from the heating element 50, and the air flow has a longer flow path after flowing out of the air duct 114 and is left in the air outlet 115, so that the air flow in the main chamber 116 is sufficient.

Specifically, the base 12 has a mounting groove 121 formed on a surface thereof facing the main cavity 116, one end of the heating element 50 is held in the mounting groove 121, and the other end of the heating element 50 extends into the main cavity 116, so that the fixing of the heating element 50 is held through the mounting groove 121 on the base 12, thereby facilitating the assembly and replacement of the heating element 50.

Further, the base 12 is further provided with a locking groove 123, the top cover 16 is provided with a matching groove 161, and two opposite ends of the partition 18 are respectively assembled in the locking groove 123 and the matching groove 161, so that the partition 18 is fixedly assembled between the base 12 and the top cover 16 and divides the airflow chamber 11 into a plurality of sub airflow chambers 112. Optionally, the top cover 16 includes an upper cover and an upper cross member disposed on an inner surface of the upper cover, and the upper cross member is opened with a fitting groove 161 communicating with the airflow chamber 11 to limit and fix the partition 18 by the fitting groove 161.

In some embodiments, the base 12 has a bottom wall opposite to the top cover 16 and a side wall intersecting with the bottom wall, and the side wall is provided with a plurality of air inlets 113 respectively communicating with the plurality of air channels 114, so that air can be smoothly introduced from the side surface of the base 12. Optionally, the air duct 114 extends in an arc shape between the air inlet 113 and the air passing opening 13, and the plurality of air ducts 114 are disposed opposite to each other with respect to the center of the base 12, so that the plurality of air ducts 114 are uniformly distributed on the base 12 to uniformly convey the air flow, and the air duct 114 is curved in an arc shape to make the air flow smoothly flow out from the air inlet 113 on the side of the base 12 to the air passing opening 13 on the top surface of the base 12 in the air duct 114.

In the present embodiment, the outlet grille 14 is configured as a polygonal ring, the heating element 50 includes a plurality of sub-heating elements 52, the plurality of sub-heating elements 52 are respectively disposed corresponding to each side of the polygonal ring, each side of the outlet grille 14 has a corresponding sub-heating element 52 to heat the airflow at a corresponding position, and the airflow at each orientation of the outlet grille 14 can be heated. The outlet grill 14 itself is a polygonal ring, and can discharge air all around in the circumferential direction.

Further, the outlet grille 14 includes a first outlet grille 141, a second outlet grille 143, a third outlet grille 145 and a fourth outlet grille 147, and the first outlet grille 141, the second outlet grille 143, the third outlet grille 145 and the fourth outlet grille 147 are connected in a closed manner to form a quadrilateral ring; the heating member 50 includes four sub-heating members 52, the four sub-heating members 52 are respectively disposed in the airflow chamber 11 corresponding to the first outlet grille 141, the second outlet grille 143, the third outlet grille 145 and the fourth outlet grille 147, and the four sub-heating members 52 heat the airflow flowing to each side of the outlet grille 14.

Furthermore, the number of the sub airflow cavities 112 and the number of the fans 32 are two, the partition 18 is disposed between the first air outlet grille 141 and the third air outlet grille 145, or the partition 18 is disposed between the second air outlet grille 143 and the fourth air outlet grille 147, forced convection in two directions is formed by the two fans 32, and the air outlet amount and the air outlet area are both improved by matching with radiation of the four side sub heating elements 52, so that the overall heating effect of the fan heater 100 is improved.

It is understood that in some embodiments, the air outlet grille 14 is a circular ring, and the heating element 50 is configured as a circular ring sleeved inside the air outlet grille 14. Equivalently, air-out grid 14 and heating member 50 all are the ring shape, and in air-out grid 14 was located to heating member 50 cover to go out the warm braw from each direction of air-out grid 14 circumference, increase the air-out scope. It is also understood that, in some embodiments, the outlet grille 14 is a circular ring, and the heating element 50 is a polygonal ring sleeved inside the outlet grille 14, so that the airflow flowing to each direction of the outlet grille 14 can be heated by the polygonal ring, and the specific shapes of the outlet grille 14 and the heating element 50 are not limited herein.

In any of the above embodiments, any one of the plurality of fans 32 may be selectively turned on or off, and a user may select at least a part or all of the plurality of fans 32 to be turned on according to a requirement, and may adjust the air outlet direction according to the requirement. In addition, every fan 32 can set up a plurality of windshields, can change the size of air output through the windshield of adjusting fan 32, control air supply distance, and the selection mode is more, and it is that the user gets warm and experiences the effect better.

The warm air blower 100 provided by the invention comprises a shell 10, a plurality of fans 32 and a plurality of sub-heating elements 52, wherein a plurality of sub-airflow cavities 112 are formed in the shell 10, the plurality of fans 32 are respectively arranged in the plurality of sub-airflow cavities 112, the plurality of sub-heating elements 52 are also arranged in the plurality of sub-airflow cavities 112, an air inlet 113 and an air outlet 115 which are communicated with the sub-airflow cavities 112 are formed in the shell 10, and a plurality of groups of air outlets 115 which are respectively communicated with the plurality of sub-airflow cavities 112 are annularly arranged. Thus, when the fan 32 in each sub-airflow cavity 112 works, airflow in multiple directions can be formed, sufficient airflow can be provided for the air outlets 115 in multiple directions, and the effect of warm air outlet is improved. In addition, a plurality of sub airflow cavities 112 corresponding to and communicated with the plurality of groups of air outlets 115 are formed in the shell, the plurality of sub airflow cavities 112 are arranged along the circumferential direction of the shell, so that the fans 32 corresponding to the sub airflow cavities 112 are utilized, a plurality of forced convection heating paths are formed, hot air is conveyed to the plurality of groups of air outlets 115 in the whole circumferential direction through airflow of the plurality of forced convection, the air outlet amount can be matched with the air outlet range, sufficient air flow is provided for the whole circumferential direction of the shell, and the whole heating effect is better.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A fan heater, characterized in that, the fan heater includes:

a housing (10), an airflow chamber (11) formed in the housing (10), the airflow chamber (11) including a plurality of sub airflow chambers (112) formed to be separated from each other; the shell (10) is provided with an air inlet area and an air outlet area, a plurality of groups of air inlets (113) are formed in the air inlet area, the air outlet area comprises a plurality of sub air outlet areas which are annularly distributed along the circumferential direction of the shell (10), and at least one group of air outlets (115) are formed in each sub air outlet area;

a fan assembly (30) including a plurality of fans (32), at least one fan (32) disposed within each of the sub-airflow chambers (112); and

a heating element (50), the heating element (50) extending in a direction through each of the sub-airflow chambers (112);

wherein each sub-airflow cavity (112) is communicated with at least one group of the air inlets (113), each sub-airflow cavity (112) is communicated with at least one group of the air outlets (115), and the heating element (50) is positioned between each group of the air inlets (113) and the air outlets (115) which are communicated with each other.

2. The fan heater according to claim 1, wherein each of said sub-airflow chambers (112) comprises an air duct (114) and a main chamber (116), said fan (32) being disposed in each of said air ducts (114), said main chamber (116) being in communication with said air duct (114), and said heating element (50) being located in said main chamber (116);

wherein, the air inlet (113) is communicated with the air duct (114), and the air outlet (115) is communicated with the main cavity (116).

3. The fan heater according to claim 2, wherein the housing (10) includes a base (12), an air outlet grille (14), a top cover (16) and a partition (18), the air outlet grille (14) is disposed annularly and connected between the base (12) and the top cover (16), the base (12), the air outlet grille (14) and the top cover (16) enclose the airflow chamber (11), the partition (18) is disposed in the airflow chamber (11) to partition the airflow chamber into the plurality of sub airflow chambers (112), and the air outlet grille (14) is provided with the plurality of sets of air outlets (115) arranged circumferentially and respectively communicated with the plurality of sub airflow chambers (112).

4. The fan heater according to claim 3, wherein a plurality of independent air channels (114) are formed inside the base (12), and a plurality of main cavities (116) are enclosed among the air outlet grille (14), the top cover (16) and the partition (18);

the heating element (50) is arranged around the inner circumference of the air outlet grid (14) and passes through each main cavity (116); an air passing opening (13) communicated with the air duct (114) and the main cavity (116) is formed in the base (12), and the air passing opening (13) is located between the partition plate (18) and the heating element (50).

5. The fan heater according to claim 4, wherein the base (12) has a bottom wall opposite to the top cover (16) and a side wall intersecting with the bottom wall, and the side wall is provided with a plurality of sets of air inlets (113) respectively communicated with the plurality of air channels (114).

6. The fan heater according to claim 5, wherein the air duct (114) extends between the air inlet (113) and the air outlet (13) in an arc shape, and the air ducts (114) are arranged symmetrically with respect to the center of the base (12).

7. The fan heater according to claim 4, wherein a mounting groove (121) is formed in a surface of the base (12) facing the main cavity (116), one end of the heating element (50) is clamped in the mounting groove (121), and the other end of the heating element (50) extends into the main cavity (116).

8. The fan heater according to claim 3, characterized in that the air outlet grille (14) is configured as a polygonal ring, the heating element (50) comprises a plurality of sub-heating elements (52), and the plurality of sub-heating elements (52) are respectively provided corresponding to each side of the polygonal ring.

9. The air heater according to claim 8, wherein the air outlet grille (14) comprises a first air outlet grille (141), a second air outlet grille (143), a third air outlet grille (145) and a fourth air outlet grille (147), and the first air outlet grille (141), the second air outlet grille (143), the third air outlet grille (145) and the fourth air outlet grille (147) are sequentially connected end to form a quadrilateral ring;

the heating element (50) comprises four sub-heating elements (52), and the four sub-heating elements (52) are respectively arranged in the airflow chamber (11) corresponding to the first air outlet grille (141), the second air outlet grille (143), the third air outlet grille (145) and the fourth air outlet grille (147).

10. The fan heater according to claim 3, wherein the air-out grille (14) is a circular ring, and the heating element (50) is configured as a circular ring sleeved inside the air-out grille (14).

11. The fan heater according to any of claims 1-10, wherein any of the plurality of fans (32) is selectively turned on or off.