CN111811141A - heater - Google Patents

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

heater

technical field

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

Background technique

The heater is a warm air supply device that can be used for heating and dehumidification in various types of workshops, and can also be used as a home heater. Its working principle is: under the power of the fan, the air enters the unit from the air inlet, is heated when it flows through the air heating element, and flows out of the unit from the air outlet to form warm air, which is sent to the heating space and forms indoor air circulation, So as to realize the heating of the indoor environment. However, traditional heaters have limited air output and poor heating performance.

SUMMARY OF THE INVENTION

Aiming at the problem of poor heating performance of traditional air heaters, the invention proposes a fan heater, which can achieve the technical effect of better heating performance.

A heater, the heater comprising:

a casing, an air flow cavity is formed in the casing, and the air flow cavity includes a plurality of sub-air flow cavities formed by being separated; and the casing has an air inlet area and an air outlet area, and a plurality of groups of air inlets are opened in the air inlet area The air outlet, the air outlet area includes a plurality of sub air outlet areas arranged in an annular shape along the circumferential direction of the casing, and each sub air outlet area is provided with at least one group of air outlets,

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

a heating element, the heating element extending along a direction passing through each of the sub-airflow chambers;

Wherein, each sub-airflow cavity is in communication with at least one group of air inlets, and each sub-airflow cavity is in communication with at least one group of air outlets, and the heating element is located between each group of the air inlets and the air outlets which are communicated with each other.

In the above heaters, each sub-airflow cavity is provided with a fan and at least a part of the heating element. When the multiple fans are working, multiple airflows can be formed that flow through the multiple sub-airflow cavities, and then hot air can be discharged from the multiple sub-airflow cavities. It can form hot air with larger air volume, and the heating effect is better. Moreover, 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, multiple paths can be formed for each sub-airflow. The airflow path of the cavity, and each airflow path passes through the heating element to heat the airflow flowing from the air inlet to the air outlet, and finally forms hot air that discharges multiple sub-airflow cavities. At the same time, a plurality of sub-air outlet areas are arranged in a ring along the circumferential direction of the casing, and at least one set of air outlets is opened in each sub-air outlet area, so that air is discharged from the plurality of sub-air outlet areas in the entire circumferential direction of the casing. The heating range of the heater is the entire circumferential direction of the casing, which is equivalent to blowing out the air from a 360-degree range of the circumferential direction of the casing. The heating range is wider and the heating performance is further improved.

In addition, a plurality of sub-air flow cavities corresponding to the plurality of sub-air outlet regions are formed inside the casing, and the plurality of sub-air outlet regions are arranged along the circumferential direction of the casing, so as to utilize the fans in the corresponding sub-air flow cavities to form a plurality of forced convection The heating path is provided by a plurality of forced convection airflows to deliver hot air to multiple sub-air outlet areas in the entire circumference of the casing, so that the air volume and the air outlet range can be matched to provide sufficient air for the entire circumference of the casing. flow, the overall heating effect is better.

In one embodiment, each of the sub-air flow chambers includes an air duct and a main cavity, the fan is arranged in each of the air ducts, the main cavity is communicated with the air duct, and the heating The parts are located in the main cavity;

Wherein, the air inlet communicates with the air duct, and the air outlet communicates with the main cavity.

In one embodiment, the housing includes a base, an air outlet grille, a top cover and a partition plate, the air outlet grille is annularly arranged and connected between the base and the top cover, and the The base, the air outlet grille and the top cover are enclosed to form the air flow cavity, the partition plate is arranged in the air flow cavity to separate and form the plurality of sub air flow cavities, and the air outlet grille is provided with The plurality of groups of air outlets are arranged along its own circumferential direction and communicate with the plurality of sub-airflow cavities respectively.

In one embodiment, a plurality of mutually independent air ducts are formed inside the base, and a plurality of the main cavities are enclosed between the air outlet grille, the top cover and the partition plate. body;

The heating element is arranged around the inner circumference of the air outlet grille and passes through each of the main cavities; the base is provided with an air outlet connecting the air duct and the main cavity, and the The air passage is located 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 and connecting with the bottom wall, and a plurality of sets of air ducts are respectively opened on the side wall. Inlet.

In one embodiment, the air duct extends in an arc shape between the air inlet and the air outlet, and a plurality of the air ducts are arranged symmetrically with respect to the center of the base.

In one embodiment, an installation groove is formed on the side of the base facing the main cavity, one end of the heating element is clamped in the installation groove, and the other end of the heating element extends into the installation groove. 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, and the plurality of sub-heating elements are respectively disposed corresponding to each side surface of the polygonal ring.

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

The heating element includes four sub-heating elements, and the four sub-heating elements correspond to the first air outlet grille, the second air outlet grille, the third air outlet grille, and the The fourth outlet grille is arranged in the airflow cavity.

In one of the embodiments, the air outlet grille is in the form of a ring, and the heating element is configured as a ring sleeved in the air outlet grille.

In one of the embodiments, any one of the plurality of fans can be selectively turned on or off.

Description of drawings

1 is a schematic structural diagram of a heater in an embodiment of the present invention;

Fig. 2 is a sectional view of the heater shown in Fig. 1 in one direction;

Fig. 3 is the sectional view of another direction of the air heater shown in Fig. 1;

Fig. 4 is the partial structure schematic diagram of the base in the heater shown in Fig. 1;

FIG. 5 is a schematic structural diagram of another part of the base of the heater shown in FIG. 1 .

100, heater; 10, shell; 11, airflow cavity; 112, sub airflow cavity; 113, air inlet; 114, air duct; 115, air outlet; 116, main cavity; 12, base; 121, installation slot ; 123, card slot; 13, air outlet; 14, outlet grill; 141, first outlet grill; 143, second outlet grill; 145, third outlet grill; 147, fourth outlet Style grill; 16, top cover; 161, matching groove; 18, partition plate; 30, fan assembly; 32, fan; 50, heating element; 52, sub-heating element.

Detailed ways

In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Back, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, Axial , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device or Elements must have a particular orientation, be constructed and operate in a particular orientation and are therefore not to be construed as limitations of the invention.

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

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between the two elements, unless otherwise specified limit. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may be in direct contact between the first and second features, or the first and second features indirectly through an intermediary touch. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or an intervening element 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 similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

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

Referring to FIG. 1 , an embodiment of the present invention provides a fan heater 100 , which includes a casing 10 , a fan assembly 30 and a heating element 50 . The fan assembly 30 and the heating element 50 are both disposed in the casing 10 , and the fan assembly 30 drives airflow. Through the inside of the casing 10, the heating element 50 is located on the flow path of the airflow, which can heat the airflow, and finally form the hot air blown out of the casing 10, which is used to heat the indoor space.

An air flow cavity 11 is formed in the housing 10 , the air flow cavity 11 includes a plurality of sub-air flow cavities 112 formed by being separated, the fan assembly 30 includes a plurality of fans 32 , and each sub-air flow cavity 112 is provided with at least one fan 32 . The direction extending through each sub-air flow cavity 112 is extended. Equivalently, each sub-airflow cavity 112 is provided with a fan 32 and at least a part of the heating element 50 . When the multiple fans 32 are working, multiple airflows flowing through the multiple sub-airflow cavities 112 can be formed, and then the multiple airflows 32 can flow through the multiple sub-airflow cavities 112 . The hot air is exhausted, and the hot air with larger air volume can be formed as a whole, and the heating effect is better.

In addition, the casing 10 has an air inlet area and an air outlet area. The air inlet area is provided with a plurality of groups of air inlets 113 , and each sub-airflow cavity 112 is communicated with at least one group of air inlets 113 ; the air outlet area includes a circumferential direction of the casing 10 . A plurality of sub-air outlet areas arranged in a ring shape, each sub-air outlet area is provided with at least one group of air outlets 115, each sub-air flow cavity 112 is communicated with at least one group of air outlets 115, and the heating element 50 is located in each group of interconnected inlets. between the air outlet 113 and the air outlet 115 . Equivalently, each sub-airflow cavity 11 communicates with one or more sets of air inlets 113, and each sub-airflow cavity 113 communicates with one or more sets of air outlets 115, so that when the fan 32 in each sub-airflow cavity 113 is working, it can Multiple airflow paths are formed through each sub-airflow cavity 113 , and each airflow path passes through the heating element 50 . hot air. At the same time, the plurality of sub-air outlet areas are annularly arranged along the circumferential direction of the casing 10 , and each sub-air outlet area is provided with at least one set of air outlets 115 . For exhaust air, the heating range of the heater 100 is the entire circumferential direction of the casing 10 , which is equivalent to air discharge from a 360-degree range of the circumferential direction of the casing 10 , the heating range is wider, and the heating performance is further improved.

In addition, a plurality of sub-air flow cavities 112 corresponding to the plurality of sub-air outlet regions are formed inside the casing 10, and the plurality of sub-air outlet regions are arranged along the circumferential direction of the casing, so as to utilize the fans 32 in the corresponding sub-air flow cavities 112 to form Multiple forced convection heating paths, through multiple forced convection airflows, deliver hot air to multiple sub-air outlet areas in the circumferential direction of the entire casing, so that the air output volume can be matched with the air outlet range, which is the entire circumference of the casing 10. To provide enough airflow, the overall heating effect is better.

It can be 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; a group of air outlets 115 is a plurality of air outlets 115 gathered together, each group The air outlet 115 includes a plurality of air outlets 115 .

Further, each sub-air flow cavity 112 includes an air duct 114 and a main cavity 116, each air duct 114 is provided with a fan 32, the main cavity 116 communicates with the air duct 114, and the heating element 50 is located 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 . In this way, the fan 32 and the heating element 50 are arranged in two spaces. When the fan 32 works in the air duct 114 , the outside air is sucked into the air duct 114 from the air inlet 113 , and then the air is transported into the main cavity 116 . Contact with the heating element 50 absorbs heat, thereby forming hot air discharged from the air outlet 115 . In this way, the fan 32 and the heating element 50 are arranged separately, and the two will not affect each other during the installation and design process, and all the airflow can be introduced into the main cavity 116 through the guidance of the air duct 114 for heating, thereby improving the overall manufacturing efficiency of the heater 100. thermal performance.

In some embodiments, the housing 10 includes a base 12 , an outlet grill 14 , a top cover 16 and a partition 18 . The outlet grill 14 is annularly arranged and connected between the base 12 and the top cover 16 . The base 12 , the outlet The air grille 14 and the top cover 16 are enclosed to form the airflow cavity 11. The baffle 18 is arranged in the airflow cavity 11 to separate and form a plurality of sub airflow cavities 112. There are multiple groups of air outlets 115 connected to each of the sub-air flow chambers 112 . In this way, a plurality of sub-airflow cavities 112 are formed by enclosing the base 12 , the outlet grille 14 and the partition plate 18 , and the plurality of sub-airflow cavities 112 are separated by the partitions 18 to prevent the fans 32 in the multiple sub-airflow cavities 112 from operating at the same time. The airflow is turbulent to ensure that the heat can be blown out stably. Moreover, the air outlet grill 14 is annular, and has multiple groups of air outlets 115 which are respectively connected to the plurality of sub-airflow cavities 112 along its own circumferential direction. , which can increase the air outlet range. It can be understood that the outlet grille 14 may be configured as a circular ring or a polygonal ring structure, and the specific shape of the ring structure is not limited herein.

Specifically, a plurality of mutually independent air ducts 114 are formed inside the base 12 , and the outlet grill 14 , the top cover 16 and the partition plate 18 are enclosed to form a plurality of main cavities 116 ; the heating element 50 surrounds the air outlet grill 14 . The base 12 is arranged in the inner circumferential direction and passes through each main cavity 116 , and the air passage 13 connecting the air passage 114 and the main cavity 116 is opened on the base 12 . Equivalently, an air duct 114 is formed inside the base 12 , a main cavity 116 is formed inside the outlet grill 14 , and the air duct 114 and the main cavity 116 are communicated through the air passage 13 , thus forming a complete sub-air flow cavity 112 , used to guide the airflow. In addition, the plurality of air ducts 114 and the plurality of main cavities 116 communicate with each other through the air passages 13 respectively, so as to form a plurality of sub-airflow cavities 112 . At the same time, the air outlet 13 is located between the partition 18 and the heating element 50 , so that the airflow in the air duct 114 passes through the air outlet 13 and enters the main cavity 116 , first passes through the heating element 50 , and then is discharged from the air outlet 13 .

Optionally, the air outlet 13 is arranged close to the partition 18 and away from the heating element 50 , and the air flow from the air duct 114 has a longer flow path before it remains at the air outlet 115 , so that the air flow in the main cavity 116 is relatively sufficient. .

Specifically, an installation groove 121 is formed on the side of the base 12 facing the main cavity 116 , one end of the heating element 50 is clamped in the installation groove 121 , and the other end of the heating element 50 extends into the main cavity 116 . The installation groove 121 of the 10000-1000 is clamped to fix the heating element 50 , so as to facilitate the assembly and replacement of the heating element 50 .

Further, the base 12 is also provided with a clamping slot 123, the top cover 16 is provided with a matching slot 161, and the opposite ends of the partition plate 18 are respectively assembled in the clamping slot 123 and the matching slot 161, so that the partition plate 18 is fixedly assembled in the Between the base 12 and the top cover 16 , the airflow cavity 11 is divided into a plurality of sub airflow cavities 112 . Optionally, the top cover 16 includes an upper cover and an upper beam disposed on the inner surface of the upper cover. The upper beam is provided with a matching groove 161 that communicates with the airflow cavity 11 to limit and fix the baffle 18 through the matching 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. The side walls are provided with a plurality of sets of air inlets 113 respectively communicated with the plurality of air ducts 114, so that from the base 12 Side air intake, the air intake is more smooth. Optionally, the air duct 114 is arcuately extended between the air inlet 113 and the air outlet 13 , and a plurality of air ducts 114 are arranged relative to the center of the base 12 , so that the plurality of air ducts 114 are evenly distributed on the base 12 The air duct 114 is curved in an arc shape, so that the air flows smoothly from the air inlet 113 on the side of the base 12 to the air outlet 13 on the top surface of the base 12 in the air duct 114 .

Specifically in this embodiment, the outlet grill 14 is configured as a polygonal ring, the heating element 50 includes a plurality of sub-heating elements 52, and the plurality of sub-heating elements 52 are respectively arranged corresponding to each side of the poly-deformable ring. The outlet grill 14 There are corresponding sub-heating elements 52 on each side of the fan to heat the airflow at the corresponding position, which can heat the airflow from all directions of the outlet grille 14 . In addition, the outlet grill 14 itself is in the shape of a polygonal ring, which can exhaust air in all directions from the circumferential direction.

Further, the exhaust grill 14 includes a first exhaust grill 141, a second exhaust grill 143, a third exhaust grill 145, and a fourth exhaust grill 147. The second air outlet grille 143 , the third air outlet grille 145 and the fourth air outlet grille 147 are connected to form a quadrilateral ring. The air grille 141 , the second air outlet grille 143 , the third air outlet grille 145 and the fourth air outlet grille 147 are arranged in the airflow cavity 11 , and each of the airflows to the air outlet grille 14 is controlled by the four sub-heating elements 52 . Air flow from one side heats it.

Furthermore, there are two sub-airflow chambers 112 and two fans 32, and the partition plate 18 is arranged between the first air outlet grille 141 and the third air outlet grille 145, or the partition plate 18 is arranged in the second air outlet air grille. Between the grille 143 and the fourth air outlet grille 147, forced convection in two directions is formed by the two fans 32, and with the radiation of the four side sub-heating elements 52, the air output volume and the air outlet area are improved, and the heater is improved. 100 overall heating effect.

It can be understood that, in some embodiments, the outlet grill 14 is in the form of a ring, and the heating element 50 is configured as a ring sleeved inside the outlet grill 14 . Equivalently, the outlet grill 14 and the heating element 50 are both annular, and the heating element 50 is sleeved inside the outlet grill 14, so as to emit warm air from all directions in the circumferential direction of the outlet grill 14, increasing the Wind range. It can also be understood that, in some embodiments, the outlet grille 14 is in the form of a circular ring, and the heating element 50 is configured as a polygonal ring sleeved in the outlet grille 14, and the flow can also be directed to the outlet grille 14 through the polygonal ring. The airflow in all directions is heated, and the specific shapes of the outlet grill 14 and the heating element 50 are not limited herein.

In any of the above embodiments, any one of the multiple fans 32 can be selectively turned on or off, and the user can choose to turn on at least part or all of the multiple fans 32 according to needs, and can adjust the air outlet direction according to needs. In addition, each fan 32 can be provided with multiple windshields. By adjusting the windshield of the fan 32, the size of the air output can be changed, and the air supply distance can be controlled. There are many options, and the user has a better heating experience.

The heater 100 provided by the present invention includes a casing 10, a plurality of fans 32 and a plurality of sub-heating elements 52. A plurality of sub-airflow cavities 112 are formed inside the casing 10, and a plurality of fans 32 are respectively arranged in the plurality of sub-airflow cavities 112, and there are many A plurality of sub-heating elements 52 are also arranged in each of the sub-airflow cavities 112 , the housing 10 is provided with an air inlet 113 and an air outlet 115 which are both communicated with the sub-airflow cavities 112 , and a plurality of sets of air outlets are respectively communicated with the plurality of sub-airflow cavities 112 . 115 is arranged in a ring shape. In this way, when the fan 32 in each sub-airflow cavity 112 is working, airflow in multiple directions can be formed, sufficient airflow can be provided for the air outlets 115 in multiple directions, and the effect of heating air can be improved. In addition, a plurality of sub-airflow cavities 112 corresponding to the plurality of sets of air outlets 115 are formed inside the casing, and the plurality of sub-airflow cavities 112 are arranged along the circumferential direction of the casing, so as to utilize the fans 32 in the corresponding sub-airflow cavities 112 to form a plurality of forced air cavities 112 . The convection heating path delivers hot air to the multiple groups of air outlets 115 in the entire circumference through multiple forced convection airflows, which can match the air outlet volume with the air outlet range and provide sufficient air flow for the entire circumference of the housing. The heating effect is better.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are more specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (11)

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.

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