A fan arrangement compatible with an electric heater

Abstract

The utility model provides a kind of fan device compatible with electric heater, including front cover, back cover, motor, impeller and electric heater, electric heater is set in impeller front end position, electric heater includes cone, foldable heat reflecting member, electric heating body, reflector and fixing part, disc part is set in foldable heat reflecting member middle, disc part center fixed mounting is provided with cone, annular electric heating body is fixed on the cone, reflector and cone are fixedly connected with the center cover of the middle of front cover by fixing part, and the periphery of front cover is radially distributed with several wires, and wire is electrically connected with electric heating body setting. The present application can prevent the heat transfer of electric heater to the center cover of front cover, to prevent the center cover from being burnt out, or the center cover is heated and scalds user and the occurrence of other safety accidents, and electric heater, reflector and foldable heat reflecting member are installed more firmly.

Description

Technical Field

[0001] This utility model relates to the field of fan structure technology, and in particular to a fan device compatible with an electric heater. Background Technology

[0002] The applicant's Korean patent granted on November 10, 2021, patent number KR102326655B1, entitled "An Electric Heater for a Fan," discloses an electric heater for a fan, comprising a disc portion, a curved portion formed on the circumference of the disc portion, a circular base plate, multiple folded pieces mounted on the circumference of the base plate by hinges, multiple bolts fixed to the base plate, and nuts fastened to the bolts. Parts of the folded pieces adjacent to one of the folded pieces are placed in an overlapping manner. When the multiple folded pieces are unfolded, they form a plate shape; when the folded pieces are folded in half, they form a cylinder shape; and when the folded pieces are fully folded, their ends are in a closed shape, like a flower bud before blooming. The heater is composed of an annular heating wire placed inside a reflector.

[0003] After the disc located in the center of the fan front cover is removed, the heat dissipation guide component is secured with nuts with the bolts of the pad inserted into the bolt holes formed on the centering ring of the front cover.

[0004] However, the heating wire and heat dissipation guide of the electric heater used in the above-mentioned electric fan are located in front of the front cover, and the heating wire is exposed, which poses a potential safety hazard.

[0005] The applicant's Korean patent, granted on October 13, 2021, patent number KR102314271B1, entitled "An Electric Heater for a Fan," discloses an electric heater for a fan. The reflector is hemispherical and covered by a cover. An annular heating wire is disposed in the center of the reflector's interior. A wire connected to the heating wire is pulled outward through a conduit passing through the reflector and the cover. Multiple rings are formed at the tip of the outer peripheral surface of the cover. After removing a disc located in the center of the fan's front cover, the cover is inserted into a centering ring on the front cover. The multiple rings are detachably mounted on the centering ring. The rear end of the cover is located opposite the central hub of the fan impeller. The plug of the wire is connected to a separate power socket, independent of the fan's power supply, allowing the heater to operate independently of the fan's operation.

[0006] The reflector size of the aforementioned electric fan heater cannot be adjusted, and the cover is mounted on the centering ring of the front cover by multiple rings. The installation structure of the cover is not secure, and the radiant heat from the heating wire and the radiant heat reflected by the reflector will heat the quartz glass or safety net in front of the heating wire, causing potential safety hazards such as burns.

[0007] There is a need for a new type of fan device compatible with electric heaters that can solve the problems mentioned above. Utility Model Content

[0008] This utility model provides a fan device compatible with an electric heater. By technically modifying the existing fan and electric heater structure, it solves the problems of existing fan electric heater reflectors being unadjustable, the cover installation structure being unstable, and the radiant heat from the heating wire and the radiant heat reflected by the reflector heating the quartz glass or safety net in front of the heating wire, causing burns and other safety hazards.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0010] A fan device compatible with an electric heater includes a front cover, a rear cover, a motor, an impeller, and an electric heater. The motor is mounted at the rear end of the rear cover, and the motor drive shaft passes through the rear cover and is connected to the impeller. The rear cover covers the impeller. The periphery of the rear cover and the periphery of the front cover are detachably connected by a protective cover. An electric heater is installed inside the front cover and is located at the front end of the impeller.

[0011] The electric heater includes a cone, a foldable heat reflector, an electric heating element, a reflector, and a fixing component. The foldable heat reflector has a disc portion in the middle, and the cone is fixedly installed at the center of the disc portion. An annular electric heating element is fixed on the cone. A central cover is provided in the middle of the front cover. A concave disc-shaped reflector is provided between the central cover and the front disc portion of the cone. The reflector is separated from the electric heating element and is positioned opposite to the disc portion of the foldable heat reflector. The reflector and the cone are fixedly connected to the central cover in the middle of the front cover by the fixing component. Several wires are radially distributed in the periphery of the front cover, and the wires are electrically connected to the electric heating element.

[0012] Preferably, the fixing member is a long pin, which passes through the center cover of the front cover, the reflector, the front disc of the cone and the disc of the foldable heat reflective component from the outside to the inside, and the long pin protrudes through the disc of the foldable heat reflective component and has a front protrusion. The wire is connected to the front protrusion of the long pin.

[0013] Preferably, the fixing component is a fixing bolt, and several fixing bolts are fixedly connected through the central cover, the reflector and the front end disc of the cone, and the wire is connected from the periphery of the front cover inward to the back of the disc of the foldable heat reflective component.

[0014] Preferably, the foldable heat-reflective component includes a disc portion, a foldable plate, and a hinge. The foldable plate is rotatably connected to the disc portion via the hinge. Several foldable plates are arranged radially along the circumference of the disc portion. When the foldable plates are unfolded via the hinge, they are disc-shaped. When the foldable plates are folded up via the hinge, they overlap each other to form a cylindrical shape.

[0015] Preferably, the outer ends of the two oppositely arranged folding plates on the disc portion are provided with small holes, and an adjusting steel wire is installed through the small holes. The adjusting steel wire passes through the front cover and is connected to the pull ring portion. The folding plates are set to unfold or fold up by adjusting the steel wire.

[0016] A fan device compatible with an electric heater includes a front cover, a safety net, a small cover, a motor, an impeller, and an electric heater. The motor is installed at the rear end of the safety net, and the motor drive shaft passes through the safety net and is connected to the impeller. The safety net covers the impeller. The front cover is fixed to the front end of the safety net. The front end of the front cover has an annular edge with mounting holes. The edge of the small cover is connected to the annular edge through the mounting holes by several bolts. An electric heater is installed inside the small cover and is located at the front end of the impeller.

[0017] The electric heater includes a cone, a foldable heat reflector, an electric heating element, a reflector, and a fixing component. The foldable heat reflector has a disc portion in the middle, and the cone is fixedly installed at the center of the disc portion. An annular electric heating element is fixed on the cone. A central cover is provided in the middle of the small cover. A concave disc-shaped reflector is provided between the central cover and the front disc portion of the cone. The reflector is separated from the electric heating element and is arranged opposite to the disc portion of the foldable heat reflector. The reflector and the cone are fixedly connected to the central cover in the middle of the small cover by the fixing component. Several wires are radially distributed in the periphery of the small cover, and the wires are electrically connected to the electric heating element.

[0018] Preferably, the fixing member is a long pin, which passes through the center cover of the small cover, the reflector, the front disc of the cone and the disc of the foldable heat reflective component from the outside to the inside, and the long pin protrudes through the disc of the foldable heat reflective component with a front protrusion, and the wire is connected to the front protrusion of the long pin.

[0019] Preferably, the fixing component is a fixing bolt, and several fixing bolts are fixedly connected through the central cover of the small cover, the reflector and the front end disc of the cone, and the wire is connected from the periphery of the small cover inward to the back of the disc of the foldable heat reflective component.

[0020] Preferably, the foldable heat-reflective component includes a disc portion, a foldable plate, and a hinge. The foldable plate is rotatably connected to the disc portion via the hinge. Several foldable plates are arranged radially along the circumference of the disc portion. When the foldable plates are unfolded via the hinge, they are disc-shaped. When the foldable plates are folded up via the hinge, they overlap each other to form a cylindrical shape.

[0021] Preferably, the outer ends of the two oppositely arranged folding plates on the disc portion are provided with small holes, and an adjusting steel wire is installed through the small holes. The adjusting steel wire passes through the front cover and is connected to the pull ring portion. The folding plates are set to unfold or fold up by adjusting the steel wire.

[0022] The beneficial effects of this utility model are as follows:

[0023] The electric heater combined with the fan device of this application can prevent the heat of the electric heater from being transferred to the center cover of the front cover, thereby preventing the center cover of the front cover from being damaged by the heat of the electric heater, or the center cover from being heated and burning the user, and the electric heater, reflector and foldable heat reflective component can be more securely installed on the front cover (or small cover). Attached Figure Description

[0024] Figure 1 This is a perspective view of a fan device compatible with an electric heater according to the first embodiment of this utility model.

[0025] Figure 2 This is an exploded perspective view of a fan device compatible with an electric heater according to the first embodiment of this utility model.

[0026] Figure 3 This is an exploded view of a fan device compatible with an electric heater according to the first embodiment of this utility model.

[0027] Figure 4 and Figure 5 This is a cross-sectional view of the first embodiment of the present invention. Figure 4 It is the slightly folded state of the foldable heat reflective component's folding plate. Figure 5 This is the fully unfolded state of the foldable heat-reflective component.

[0028] Figure 6 This is a cross-sectional view of another example of an electric heater mounted on the front cover.

[0029] Figure 7 This is a perspective view of a fan device compatible with an electric heater according to a second embodiment of the present invention.

[0030] Figure 8 This is an exploded perspective view of a fan device compatible with an electric heater according to the second embodiment of this utility model.

[0031] Figure 9 This is an exploded view of a fan device compatible with an electric heater according to the second embodiment of this utility model.

[0032] Figure 10 This is a cross-sectional view of the fan assembly compatible with an electric heater according to the second embodiment of this utility model.

[0033] Figure 11 This is a cross-sectional view of another example of the electric heater mounted on the small cover according to the second embodiment of this utility model.

[0034] Explanation of icon numbers:

[0035] First embodiment: motor 110, drive shaft 112, impeller 120, rear cover 130, rear cover periphery 131, front cover 140, front cover periphery 141, center cover 142, protective cover 145, electric heater 150, foldable heat reflector 151, disc part 151a, foldable plate 151b, hinge 151c, cone 152, electric heating element 153, reflector 154, long pin 155, front end protrusion 155a, head 155b, wire 160, fixing bolt 170, adjusting steel wire 180, pull ring part 190.

[0036] Second embodiment: motor 210, drive shaft 212, impeller 220, safety net 230, rear cover 231, front cover 233, mounting hole 234, annular edge 235, small cover 240, small cover edge 241, bolt 242, electric heater 250, foldable heat reflector 251, disc part 251a, foldable plate 251b, hinge 251c, cone 252, front disc part 252a, electric heating element 253, reflector 254, long pin 255, front protrusion 255a, head 255b, wire 260, fixing bolt 270, adjusting steel wire 280, pull ring part 290. Detailed Implementation

[0037] The specific content of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0038] Please see Figures 1 to 5 As shown, the first embodiment of this utility model provides a fan device compatible with an electric heater, including a front cover 140, a rear cover 130, a motor 110, an impeller 120, and an electric heater 150. The motor 110 is installed at the rear end of the rear cover 130, and the drive shaft 112 of the motor 110 passes through the rear cover 130 and is connected to the impeller 120. The rear cover 130 is configured to cover the impeller 120. The periphery 131 of the rear cover and the periphery 141 of the front cover are detachably connected by a protective cover. The electric heater 150 is installed inside the front cover 140 and is located at the front end of the impeller 120.

[0039] The electric heater 150 includes a cone 152, a foldable heat reflector 151, an electric heating element 153, a reflector 154, and a fixing member. The foldable heat reflector 151 has a disc portion 151a in the middle, and the cone 152 is fixedly installed in the center of the disc portion 151a. The annular electric heating element 153 is fixed on the cone 152. The front cover 140 has a central cover 142 in the middle. The concave disc-shaped reflector 154 is disposed between the central cover 142 and the front disc portion 151a of the cone 152. The reflector 154 is separated from the electric heating element 153 and is disposed opposite to the disc portion 151a of the foldable heat reflector. The reflector 154 and the cone 152 are fixedly connected to the central cover 142 in the middle of the front cover 140 by the fixing member. Several wires 160 are radially distributed in the periphery 141 of the front cover, and the wires 160 are electrically connected to the electric heating element 153.

[0040] Furthermore, the fixing member is a long pin 155, which passes sequentially from the outside to the inside through the center cover 142 of the front cover 140, the reflector 154, the front disc portion 151a of the cone 152, and the disc portion 151a of the foldable heat reflector. The long pin 155 protrudes through the disc portion 151a of the foldable heat reflector and has a front protrusion 155a. The wire 160 is connected to the front protrusion 155a of the long pin 155. The wire 160 passes along the front protrusion 155a of the long pin 155 through the cone 152 until it is connected to the electric heating element 153.

[0041] The electric heater 150 can independently supply power to the electric heater 153 without considering the power supply to the motor 110. The annular electric heater 153 is inserted into and fixed on the cone 152. The reflector 154 is disposed between the center cover 142 of the front cover 140 and the front end disc portion 152a of the cone 152. It can prevent the reflector 154 from transferring the heat of the electric heater 153 to the center cover 142 of the front cover 140, thereby preventing the center cover 142 of the front cover 140 from being damaged by the heat of the electric heater 153 or from being heated, which could lead to safety accidents such as burns to the user.

[0042] With the head 155b of the long pin 155 pressing against the center cover 142 of the front cover 140, the reflector 154, the tip plate portion 152a of the cone 152, and the disc portion 151a of the foldable heat reflector 151 are inserted into the long pin 155 and connected to the front end protrusion 155a of the long pin 155 by multiple wires 160 connected to the peripheral portion 141 of the front cover 140. Thus, the electric heater 153, the reflector 154, and the foldable heat reflector 151 are securely mounted on the front cover 140.

[0043] Furthermore, such as Figure 6Alternatively, the fixing element is a fixing bolt 170, with several fixing bolts 170 passing through the central cover 142, the reflector 154, and the front end disc portion 151a of the cone 152 for fixed connection. The wire 160 extends inward from the periphery 141 of the front cover to the back side of the disc portion 151a of the foldable heat reflector. The wire 160 passes along the back side of the disc portion 151a of the foldable heat reflector and is connected to the electric heating element 153.

[0044] Furthermore, the foldable heat-reflective component 151 includes a disc portion 151a, a foldable plate 151b, and a hinge 151c. The foldable plate 151b is rotatably connected to the disc portion 151a via the hinge 151c. Several foldable plates 151b are arranged radially along the circumference of the disc portion 151a. When the foldable plate 151b is unfolded via the hinge 151c, it is disc-shaped. When the foldable plate 151b is folded down via the hinge 151c, it overlaps with each other to form a cylindrical shape.

[0045] Furthermore, such as Figures 4-6 As shown, in order to facilitate the unfolding or folding of the folding plate 151b, small holes are provided at the outer ends of the two oppositely arranged folding plates 151b on the disc portion 151a. An adjusting steel wire 180 is installed through the small hole. The adjusting steel wire 180 passes through the front cover 140 and is connected to the pull ring portion 190. The folding plate 151b is unfolded or folded by adjusting the steel wire 180.

[0046] Regarding the electric heating element 153, there are various types of electric heating elements 153, such as coils, tubular heating elements, and ceramic heating elements, which can be purchased on the market. Therefore, detailed descriptions are omitted here.

[0047] The fan device compatible with the electric heater 150 in the first embodiment of this application can be used in three ways: as a fan alone, as a fan plus the electric heater 150, or as an electric heater 150. When used as a fan, the fan is not powered by the electric heater 150, but is powered by the motor 110 to drive the impeller 120 to blow air.

[0048] When used as a fan plus electric heater 150, the electric heater 150 and the motor 110 can be powered separately. The heat of the electric heater 150 can be transferred over a long distance through the impeller 120 to blow out hot air.

[0049] When used as an electric heater 150, the electric heater 150 is powered without being powered by the motor 110, and the fan is not started, so that the radiant heat of the electric heater 150 is concentrated and sent to any location.

[0050] At this time, the reflector 154 is positioned between the center cover 142 of the front cover 140 and the electric heating element 153 installed in the cone 152, so that the radiant heat radiated from the electric heating element 153 towards the center cover 142 is reflected by the reflector 154 to the foldable heat reflector 151. This not only prevents the center cover 142 of the front cover 140 from being damaged by the radiant heat radiated by the electric heating element 153, but also allows the foldable heat reflector 151 to reflect more radiant heat forward from the radiant heat reflected by the reflector 154.

[0051] When the foldable heat reflector 151's foldable plate 151b is fully unfolded, the heat reflected by the foldable heat reflector 151 can spread widely.

[0052] Furthermore, when the electric heater 150 is not in use, as described above, the foldable plate 151b of the foldable heat reflective member 151 can be folded into a cylindrical shape that overlaps with each other.

[0053] Furthermore, the front cover 140 with the electric heater 150 installed can be replaced by a front cover without the electric heater 150 installed and used as a fan.

[0054] Reference Figures 7 to 10 As shown, according to the second embodiment of this application, a fan device compatible with an electric heater is provided, including a front cover 233, a safety net 230, a small cover 240, a motor 210, an impeller 220, and an electric heater 250. The motor 210 is installed at the rear end of the safety net 230, and the drive shaft 212 of the motor 210 passes through the safety net 230 and is connected to the impeller 220. The safety net 230 is provided to cover the impeller 220. The front cover 233 is fixed to the front end of the safety net 230. The front end of the front cover 233 is provided with an annular edge 235. The annular edge 235 is provided with a mounting hole 234. The edge of the small cover 240 is connected to the annular edge 235 through the mounting hole 234 by several bolts 242. The electric heater 250 is installed inside the small cover 240. The electric heater 250 is located at the front end of the impeller 220.

[0055] The safety net 230 includes a rear cover 231 installed at the front of the motor 110. The peripheral portion of the rear cover 231 and the peripheral portion of the front cover 233 are detachably connected by a protective cover 237, and a mounting hole 234 is formed at the center of the front end of the front cover 233.

[0056] The electric heater 250 includes a cone 252, a foldable heat reflector 251, an electric heating element 253, a reflector 254, and a fixing member. The foldable heat reflector 251 has a disc portion 251a in the middle, and the cone 252 is fixedly installed in the center of the disc portion 251a. The annular electric heating element 253 is fixed on the cone 252. The small cover 240 has a central cover 243 in the middle. The concave-shaped reflector 254 is disposed between the central cover 243 and the front end disc portion 252a of the cone 252. The reflector 254 is separated from the electric heating element 253 and is disposed opposite to the disc portion 251a of the foldable heat reflector 251. The reflector 254 and the cone 252 are fixedly connected to the central cover 243 in the middle of the small cover 240 by the fixing member. Several wires 260 are radially distributed in the periphery of the small cover 240. The wires 260 are electrically connected to the electric heating element 253.

[0057] Furthermore, the fixing member is a long pin 255, which passes sequentially from the outside to the inside through the central cover 243 of the small cover 240, the reflector 254, the front disc portion 252a of the cone 252, and the disc portion 251a of the foldable heat reflector 251. The long pin 255 protrudes through the disc portion 251a of the foldable heat reflector 251 and has a front protrusion 255a. The wire 260 is connected to the front protrusion 255a of the long pin 255. The wire 260 passes along the front protrusion 255a of the long pin 255 through the cone 252 until it is connected to the electric heating element 253.

[0058] The electric heater 250 can independently supply power to the electric heating element 253 without considering powering the motor 210, and is mainly covered by the small cover 240 to prevent safety accidents. The annular electric heating element 253 is inserted and fixed on the cone 252. The reflector 254 is set between the center cover 243 of the small cover 240 and the front end disc portion 252a of the cone 252 to prevent the heat of the electric heating element 253 from being transferred to the center cover 243 of the small cover 240 by the reflector 254, thereby preventing the center cover 243 of the small cover 240 from being damaged by the heat of the electric heating element 253, and preventing the center cover 243 from being heated and causing safety accidents such as burns to the user.

[0059] When the head 255b of the long pin 255 is pressed on the center cover 243 of the small cover 240, the long pin 255 passes through the center cover 243 of the small cover 240, the reflector 254, the front disc portion 252a of the cone 252 and the disc portion 251a of the foldable heat reflector 251 until the front protrusion 255a is exposed. At this time, the electric heating element 253, the reflector 254 and the foldable heat reflector 251 are firmly installed on the small cover 240.

[0060] Furthermore, such as Figure 11Alternatively, the fixing element is a fixing bolt 242. Several fixing bolts 242 are fixedly connected through the central cover 243 of the small cover 240, the reflector 254, and the front disc portion 252a of the cone 252. The wire 260 is connected from the periphery of the small cover 240 inwards to the back of the disc portion 251a of the foldable heat reflector 251. The wire 260 passes along the back of the disc portion 251a of the foldable heat reflector 251 and is connected to the electric heating element 253.

[0061] Furthermore, the foldable heat-reflective component 251 includes a disc portion 251a, a foldable plate 251b, and a hinge 251c. The foldable plate 251b is rotatably connected to the disc portion 251a via the hinge 251c. Several foldable plates 251b are arranged radially along the circumference of the disc portion 251a. When the foldable plates 251b are unfolded via the hinge 251c, they are disc-shaped. When the foldable plates 251b are folded up via the hinge 251c, they overlap each other to form a cylindrical shape.

[0062] Furthermore, such as Figures 10-11 As shown, small holes are provided at the outer ends of the two folding plates 251b arranged opposite each other on the disc portion 251a. An adjusting steel wire 280 is installed through the small holes. The adjusting steel wire 280 passes through the front cover 233 and is connected to the pull ring portion 290. The folding plates 251b are set to be unfolded or folded by adjusting the steel wire 280.

[0063] Regarding the electric heating element 253, there are various types of electric heating elements 253, such as coil heating elements, tubular heating elements, and ceramic heating elements, which can be purchased on the market. Therefore, detailed descriptions are omitted here.

[0064] The electric heater / fan device of this application can prevent the heat from the electric heater from being transferred to the center cover of the front cover, thereby preventing the center cover of the front cover from being damaged by the heat of the electric heater, or from being burned by the heated center cover, and other safety accidents. Furthermore, the electric heater, reflector, and foldable heat reflective component can be more securely installed on the front cover (or small cover).

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

[0066] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0067] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A fan device compatible with an electric heater, characterized in that, It includes a front cover, a rear cover, a motor, an impeller, and an electric heater. The motor is installed at the rear end of the rear cover, and the motor drive shaft passes through the rear cover and is connected to the impeller. The rear cover covers the impeller. The periphery of the rear cover and the periphery of the front cover are detachably connected by a protective cover. An electric heater is installed inside the front cover and is located at the front end of the impeller. The electric heater includes a cone, a foldable heat reflector, an electric heating element, a reflector, and a fixing component. The foldable heat reflector has a disc portion in the middle, and the cone is fixedly installed at the center of the disc portion. An annular electric heating element is fixed on the cone. A central cover is provided in the middle of the front cover. A concave disc-shaped reflector is provided between the central cover and the front disc portion of the cone. The reflector is separated from the electric heating element and is positioned opposite to the disc portion of the foldable heat reflector. The reflector and the cone are fixedly connected to the central cover in the middle of the front cover by the fixing component. Several wires are radially distributed in the periphery of the front cover, and the wires are electrically connected to the electric heating element.

2. A fan device compatible with an electric heater according to claim 1, characterized in that, The fastener is a long pin, which passes through the center cover of the front cover, the reflector, the front disc of the cone and the disc of the foldable heat reflector in sequence from the outside to the inside. The long pin protrudes through the disc of the foldable heat reflector and has a front protrusion. The wire is connected to the front protrusion of the long pin.

3. A fan device compatible with an electric heater according to claim 1, characterized in that, The fixing component is a fixing bolt. Several fixing bolts are fixedly connected through the central cover, the reflector and the front disc of the cone. The wire is connected from the periphery of the front cover inward to the back of the disc of the foldable heat reflective component.

4. A fan device compatible with an electric heater according to claim 1, characterized in that, The foldable heat-reflective component includes a disc portion, foldable plates, and hinges. The foldable plates are rotatably connected to the disc portion via the hinges. Several foldable plates are arranged radially along the circumference of the disc portion. When the foldable plates are unfolded via the hinges, they are disc-shaped. When the foldable plates are folded up via the hinges, they overlap each other to form a cylindrical shape.

5. A fan device compatible with an electric heater according to claim 4, characterized in that, The outer ends of the two folding plates arranged opposite each other on the disc are provided with small holes. An adjusting steel wire is installed through the small holes. The adjusting steel wire passes through the front cover and is connected to the pull ring. The folding plates are set to unfold or fold up by adjusting the steel wire.

6. A fan device compatible with an electric heater, characterized in that, The device includes a front cover, a safety net, a small cover, a motor, an impeller, and an electric heater. The motor is installed at the rear end of the safety net, and the motor drive shaft passes through the safety net and is connected to the impeller. The safety net covers the impeller. The front cover is fixed to the front end of the safety net. The front end of the front cover has an annular edge with mounting holes. The edge of the small cover is connected to the annular edge through the mounting holes by several bolts. An electric heater is installed inside the small cover and is located at the front end of the impeller. The electric heater includes a cone, a foldable heat reflector, an electric heating element, a reflector, and a fixing component. The foldable heat reflector has a disc portion in the middle, and the cone is fixedly installed at the center of the disc portion. An annular electric heating element is fixed on the cone. A central cover is provided in the middle of the small cover. A concave disc-shaped reflector is provided between the central cover and the front disc portion of the cone. The reflector is separated from the electric heating element and is arranged opposite to the disc portion of the foldable heat reflector. The reflector and the cone are fixedly connected to the central cover in the middle of the small cover by the fixing component. Several wires are radially distributed in the periphery of the small cover, and the wires are electrically connected to the electric heating element.

7. A fan device compatible with an electric heater according to claim 6, characterized in that, The fastener is a long pin, which passes through the center cover of the small cover, the reflector, the front disc of the cone and the disc of the foldable heat reflector in sequence from the outside to the inside. The long pin protrudes through the disc of the foldable heat reflector and has a front protrusion. The wire is connected to the front protrusion of the long pin.

8. A fan device compatible with an electric heater according to claim 6, characterized in that, The fixing component is a fixing bolt. Several fixing bolts are fixedly connected through the central cover of the small cover, the reflector and the front end disc of the cone. The wire is connected from the periphery of the small cover to the back of the disc of the foldable heat reflective component.

9. A fan device compatible with an electric heater according to claim 6, characterized in that, The foldable heat-reflective component includes a disc portion, foldable plates, and hinges. The foldable plates are rotatably connected to the disc portion via the hinges. Several foldable plates are arranged radially along the circumference of the disc portion. When the foldable plates are unfolded via the hinges, they are disc-shaped. When the foldable plates are folded up via the hinges, they overlap each other to form a cylindrical shape.

10. A fan device compatible with an electric heater according to claim 9, characterized in that, The outer ends of the two folding plates arranged opposite each other on the disc are provided with small holes. An adjusting steel wire is installed through the small holes. The adjusting steel wire passes through the front cover and is connected to the pull ring. The folding plates are set to unfold or fold up by adjusting the steel wire.

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