Heating equipment

Abstract

The utility model provides heating equipment which comprises a shell and a fan assembly, the fan assembly is arranged in the shell and comprises two fans, the air outlet ends of the two fans are opposite, the air outlet ends of the two fans are arranged oppositely, a confluence cavity is formed in the opposite area between the air outlet ends of the two fans, and the confluence cavity is communicated with the shell. A strong air outlet area and a weak air outlet area are formed at the air outlet ends of the fans in the circumferential direction of the fans, and the strong air outlet area of one fan and the weak air outlet area of the other fan are at least partially opposite in direction, so that air flows of the two fans form spiral air flows in the confluence cavity. The heating equipment provided by the utility model can solve the problem that the heating equipment in the prior art is inconvenient to assemble due to air outlet interference and complex structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heating equipment, and concretely relates to a heating equipment. BACKGROUND

[0002] The current market heating equipment, namely, a heater, adopts a fan to realize gas flow, but the overall efficiency of one fan is low, therefore, the double-fan structure heating equipment gradually appears in the market, the double-fan heating equipment in the prior art sets a duct structure between two fans to inject the air of two fans into the inside of the duct structure respectively and then discharge the air uniformly by the duct structure.

[0003] However, the double-fan structure of the heating equipment in the prior art is prone to the problem that the air flow between two fans interferes with the air flow in the duct, thereby affecting the air discharge efficiency, and the overall structure is complex and inconvenient to assemble.

[0004] As known from the above, the current heating equipment has the problem of air flow interference and complex structure, thereby being inconvenient to assemble. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a heating equipment to solve the problem of air flow interference and complex structure of the heating equipment in the prior art, thereby being inconvenient to assemble.

[0006] In order to achieve the above purpose, according to one aspect of the utility model, a heating equipment is provided, which comprises a shell, a fan assembly, the fan assembly is arranged in the inside of the shell, the fan assembly comprises two fans with air outlet ends facing each other, the air outlet ends of the two fans are oppositely arranged, and the region oppositely facing between the air outlet ends of the two fans forms a confluence cavity; the air outlet end of the fan is formed with a strong air outlet region and a weak air outlet region along the circumference of the fan, the strong air outlet region of one fan and the weak air outlet region of the other fan are at least partially oppositely facing, so that the air flow of the two fans forms a spiral air flow in the confluence cavity.

[0007] Further, the air outlet end of the fan has a duct wall, at least one side of the duct wall of the two fans is connected, the duct wall comprises two plate segments arranged at intervals along the circumference of the fan, the strong air outlet region is close to one of the plate segments, and the weak air outlet region is close to the other plate segment.

[0008] Further, the air discharge flow of the strong air outlet region of one fan is Q1, the air discharge flow of the weak air outlet region of the other fan is Q2, and (Q1-Q2)≤20%(Q1+Q2).

[0009] Further, the heating device further comprises a heating element, the heating element is arranged at the heating outlet, and the spiral airflow flows out of the heating outlet through the heating element.

[0010] Further, the heating device further comprises a heating element, the heating element is arranged at the heating outlet, and the spiral airflow flows out of the heating outlet through the heating element.

[0011] Further, the heating device further comprises a heating element, the heating element is arranged at the heating outlet, and the spiral airflow flows out of the heating outlet through the heating element.

[0012] Further, the heating device further comprises a heating element, the heating element is arranged at the heating outlet, and the spiral airflow flows out of the heating outlet through the heating element.

[0013] Further, the heating device further comprises a heating element, the heating element is arranged at the heating outlet, and the spiral airflow flows out of the heating outlet through the heating element.

[0014] Further, the heating device further comprises a heating element, the heating element is arranged at the heating outlet, and the spiral airflow flows out of the heating outlet through the heating element.

[0015] Further, the heating device further comprises a heating element, the heating element is arranged at the heating outlet, and the spiral airflow flows out of the heating outlet through the heating element.

[0016] Further, the heating device further comprises a heating element, the heating element is arranged at the heating outlet, and the spiral airflow flows out of the heating outlet through the heating element.

[0017] Further, the heating device further comprises a heating element, the heating element is arranged at the heating outlet, and the spiral airflow flows out of the heating outlet through the heating element.

[0018] Further, the heating device further comprises a heating element, the heating element is arranged at the heating outlet, and the spiral airflow flows out of the heating outlet through the heating element.

[0019] Further, the two fan assemblies are arranged in the shell in a length direction of the shell, and the air outlet ends of the two fan assemblies face each other.

[0020] The heating equipment comprises a shell and a fan assembly, the fan assembly is arranged in the shell, the fan assembly comprises two fans with air outlet ends facing each other, the air outlet ends of the two fans are arranged oppositely, a region between the air outlet ends of the two fans oppositely forms a confluence cavity, the air outlet ends of the fans are formed with a strong air outlet area and a weak air outlet area in a circumferential direction of the fan, the strong air outlet area of one fan and the weak air outlet area of the other fan oppositely at least partially, so that the air flow of the two fans forms a spiral air flow in the confluence cavity.

[0021] As can be seen from the above, the heating equipment of the present application adopts two fans to form a confluence cavity, and the strong air outlet area and the weak air outlet area of the two fans are oppositely arranged to form a spiral upward air flow in the confluence cavity, so that the overall structure is simple, and the assembly efficiency is improved; the spiral air flow formed by the two fans is beneficial to improve the air supply efficiency, and thus the experience of the heating equipment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the specification explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0023] Figure 1 A three-dimensional structure schematic diagram of the heating equipment of the present application is shown;

[0024] Figure 2 An internal structure schematic diagram of the shell of the present application is shown;

[0025] Figure 3 A flow direction schematic diagram of the spiral air flow of the internal structure of the shell of the present application is shown;

[0026] Figure 4 A flow direction schematic diagram of the air flow of the internal structure of the shell of the present application is shown;

[0027] Figure 5 A structure schematic diagram of the air flow of the internal structure of the shell of the present application is shown.

[0028] Among them, the above drawings include the following reference signs:

[0029] 10. Housing; 110. Mounting cavity; 20. Fan; 210. Fan casing; 220. Impeller structure; 230. Strong air outlet area; 240. Weak air outlet area; 250. Medium air outlet area; 30. Combination cavity; 310. Heating air outlet. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0032] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0033] To address the problems of airflow interference and complex structure in existing heating equipment that makes assembly inconvenient, this utility model provides a heating device.

[0034] like Figures 1 to 5 As shown, the heating equipment includes a housing 10 and a fan assembly. The fan assembly is disposed inside the housing 10, and two fans 20 are arranged at intervals along the length of the housing 10 inside the housing 10. The air outlets of the two fan assemblies face each other. The air outlets of the two fan assemblies are generally parallel to the length of the housing 10, or form an acute angle with the length of the housing 10. The fan assembly includes two fans 20 with their air outlets facing each other. The air outlets of the two fans 20 are arranged facing each other, specifically, they can be spaced apart or connected. The connecting area of ​​the air outlets of the two fans 20 forms a confluence cavity 30. Along the circumference of the fan 20, the air outlets of the fans 20 form a strong air outlet area 230 and a weak air outlet area 240. The strong air outlet area 230 of one fan 20 and the weak air outlet area 240 of the other fan 20 are at least partially facing each other, so that the airflow of the two fans 20 forms a spiral airflow in the confluence cavity 30. The housing 10 has a mounting cavity 110, and the fan assembly is disposed inside the mounting cavity 110.

[0035] Specifically, the heating device of the present application adopts two fans 20 to form a confluence cavity 30, and adopts the strong air outlet area 230 and the weak air outlet area 240 of the two fans 20 to be oppositely arranged to form a spiral upward airflow inside the confluence cavity 30, the overall structure is simple, and the assembly efficiency is improved; the spiral airflow formed by the two fans 20 is beneficial to improve the air supply efficiency, and further improve the experience of the heating device.

[0036] Among them, the fan 20 is a centrifugal fan 20.

[0037] Further, the air outlet ends of the two motors of the present application are oppositely arranged and connected, so as to form a confluence cavity 30 in the area connected by the two air outlet ends, or the connecting area. The confluence cavity 30 is formed by the connection of the air outlet ends of the two fans 20, that is, part of the cavity of the confluence cavity 30 is the cavity of the air outlet end of one of the fans 20, and the other part of the cavity of the confluence cavity 30 is the cavity of the air outlet end of the other fan 20. Of course, the confluence cavity 30 can also be formed by the connection of the air outlet ends of the two fans 20 arranged at intervals, and the cavity inner wall of the confluence cavity 30 is additionally arranged between the two spaced air outlet ends to form a confluence cavity 30 structure. It can be understood that when the confluence cavity 30 is formed by the connection of the air outlet ends of the two fans 20 arranged at intervals, part of the cavity inner wall can also be shared with the wall surface of the shell 10, such as the side wall, the bottom wall, the top wall, etc.

[0038] Further, along the circumference of the fan 20, the strong air outlet area 230 and the weak air outlet area 240 are respectively located on both sides of the air outlet end.

[0039] In actual use, the airflow of the strong air outlet area 230 collides with the airflow of the weak air outlet area 240, and the colliding airflow rotates upward along the periphery of the airflow contact to form a spiral airflow.

[0040] In the present embodiment, the two fans 20 are installed on the bottom surface inside the shell 10, the circumferences of the two fans 20 are the same, and the axial directions of the two fans 20 are also the same, so that the air outlet ends of the two fans 20 can form the structure of the strong air outlet area 230 and the weak air outlet area 240 oppositely arranged.

[0041] Further, the air outlet end of the fan 20 has an air duct wall, at least one side of the air duct wall of the two fans 20 is connected, and the air duct wall includes two plate segments arranged at intervals along the circumference of the fan 20, the strong air outlet area 230 is close to one of the plate segments, and the weak air outlet area 240 is close to the other plate segment.

[0042] The surfaces of the two plate segments facing each other and the bottom surface of the shell 10 cooperate to form the air outlet end of the fan 20, one of the plate segments is a strong air outlet side plate segment, and the other plate segment is a weak air outlet side plate segment. The strong air outlet side plate segment of one of the two fans 20 is connected to the weak air outlet side plate segment of the other fan 20.

[0043] It should be noted that the strong air outlet area 230 and the weak air outlet area 240 have different air outlet flow rates, and the air outlet flow rate of the strong air outlet area 230 is greater than that of the weak air outlet area 240.

[0044] Further, the air outlet flow rate of the strong air outlet area 230 of one of the fans 20 is Q1, and the air outlet flow rate of the weak air outlet area 240 of the other fan 20 is Q2, and Q1-Q2≤20%Q1+Q2.

[0045] When Q1 and Q2 satisfy Q1-Q2≤20%Q1+Q2, the uniformity of the air outlet flow rate can be effectively guaranteed, which is beneficial to effectively hedge the air flow of the strong air outlet area 230 and the air flow of the weak air outlet area 240. In the two fans, the strong side of the outflow of one fan, i.e., the strong air outlet area 230, corresponds to the weak side of the outflow of the other fan, i.e., the weak air outlet area 240, and the difference between the outflow of the two fans is not greater than 20% of the total air volume, i.e., (Q1-Q2)≤20%(Q1+Q2), so that the outflow is more balanced, and one end is not too strong / weak to make the other end unable to effectively hedge. Since the convergence cavity is a hedge area for the air flow of the two fans 20, the strong air outlet area 230 at one end corresponds to the weak air outlet area 240 at the other end, and the air flow intensity in the middle part is equivalent, thereby forming a form of rotating upward at the periphery of the hedge area and converging upward in the center part.

[0046] In the embodiment, the fan 20 includes a fan shell 210 and an impeller structure 220, the fan shell 210 has a containing cavity and an air outlet end communicating with the containing cavity, and the impeller structure 220 is eccentrically arranged inside the containing cavity. The distance between the fan 20 main body and the fan shell 210 gradually increases in the rotation direction of the fan 20 main body, so as to form a gradually changing air duct, and the air outlet of the air duct at the weak air outlet area 240 is smaller than that at the strong air outlet area 230.

[0047] The impeller structure 220 includes an impeller and a motor, and the impeller rotates under the drive of the motor to realize air induction and then output air flow outward through the air outlet end.

[0048] Since the air outlet of the air duct at the strong air outlet area 230 is larger, the flow rate of the air flow flowing out of the strong air outlet area 230 is greater than that of the air flow flowing out of the weak air outlet area 240 with a smaller air outlet of the air duct, so more air flow flows out of the strong air outlet area 230.

[0049] In an example, the heating air outlet 310 is arranged on the confluence cavity 30, the air outlet ends of the two fans 20 are arranged in communication with the confluence cavity 30 and the heating air outlet 310, the opening direction of the heating air outlet 310 is arranged along the axial direction of the fan 20, and the helical airflow in the confluence cavity 30 rises along the side towards the heating air outlet 310.

[0050] As shown in Figures 1 to 5 the air outlet end of the fan 20 has a duct wall, the duct walls of the two fans 20 are connected, the duct walls of the two fans 20 are connected to form the confluence cavity 30, and the top end of the confluence cavity 30 is formed into the heating air outlet 310 by opening a gap.

[0051] The opening direction of the heating air outlet 310 is arranged along the axial direction of the fan 20, and the helical airflow in the confluence cavity 30 rises along the side towards the heating air outlet 310.

[0052] Specifically, the heating air outlet 310 is in communication with the confluence cavity 30, and then the helical airflow rises towards the heating air outlet 310 and is discharged by the heating air outlet 310. The heating air outlet 310 can be formed by the air outlet end, and the heating air outlet 310 arranged along the axial direction of the fan 20 can provide a helical airflow with an avoidance and provide guidance and limitation for the air outlet direction.

[0053] In one specific embodiment of the present embodiment, the heating air outlet 310 of the present application can be formed by the duct wall including a top plate segment arranged opposite to the bottom surface of the shell 10, the top plate segment has a gap, and the two top plate segments are connected, and the gap is formed at the position where the two top plate segments are connected.

[0054] In another specific embodiment of the present embodiment, the duct wall only includes two side plate segments arranged opposite along the circumferential direction of the fan 20, that is, the duct wall does not have a top plate segment, so as to realize that the top of the duct wall is formed into a gap, and the two gaps of the two fans 20 are matched to form the heating air outlet 310.

[0055] Further, the air outlet end of the fan 20 is a duct structure, the duct structures of the two fans 20 are connected to form the confluence cavity 30, and the heating air outlet 310 is arranged at the position where the top of the two duct structures is connected. The heating air outlet 310 is arranged at the position where the top of the two duct structures is connected, and then the heating air outlet 310 is formed by the two connected duct structures, and the top arranged duct structure is beneficial to the helical airflow rising out, thereby improving the flow efficiency of the airflow.

[0056] It should be noted that in another embodiment, the heating air outlet 310 can also be arranged on the duct structure of one of the fans 20. In another embodiment, the heating air outlet 310 can also be arranged on the duct structure of each of the two fans 20.

[0057] Further, the heating device further comprises a heating member and a baffle. The heating member is arranged at the heating air outlet 310, and the spiral airflow flows out of the heating air outlet 310 through the heating member. The baffle is movably arranged in the interior of the converging cavity 30, and the baffle has a first position for shielding the heating member and the heating air outlet 310 and a second position for avoiding the heating member and the heating air outlet 310.

[0058] When the baffle is in the first position, the spiral airflow is blocked by the baffle from being discharged from the heating air outlet 310 at this time when the heating air outlet 310 does not supply air outward. When the baffle is in the second position, the spiral airflow can flow out of the heating air outlet 310 after flowing through the heating member at this time when the heating air outlet 310 is in communication with the converging cavity 30, so as to provide warm air.

[0059] Further, the baffle is slidably arranged with the inner wall surface of the converging cavity 30, the baffle is parallel to the bottom surface of the shell 10, and the baffle is lifted and slid between the first position and the second position.

[0060] Further, the baffle is not limited to the structure of being lifted and slid, but can also be rotatably arranged on one of the inner wall surfaces of the converging cavity 30, and the baffle is flipped between the first position and the second position.

[0061] It should be noted that the lifting movement or the flipping movement of the baffle in the present application is achieved by a driving member to switch the baffle between the first position and the second position. The driving member can be a motor, and the motor drives the baffle to lift and move to achieve position switching through a lead screw. Or the output end of the motor is drivingly connected with the baffle to drive the baffle to flip through the output shaft of the motor.

[0062] In the present embodiment, the air outlet end of the fan 20 cooperates to form the converging cavity 30 of the cubic structure. Specifically, the air outlet end of the fan 20 has an air duct wall with a rectangular opening channel, and the air duct wall and the shell 10 cooperate to form the converging cavity 30 of the cubic structure. The converging cavity 30 of the cubic structure is adopted to facilitate the formation of the spiral airflow in the interior of the converging cavity 30.

[0063] In the present embodiment, the air outlet ends of the two fans 20 are detachably connected. Specifically, the connection manner can be clamping or connecting through fasteners, and the clamping can be buckle connection, and the fasteners can be bolts and the like. The two air outlet ends are detachably connected, which facilitates the disassembly and assembly between the two fans 20 and is conducive to improving the assembly efficiency.

[0064] Among them, the air duct walls of the two fans 20 are detachably connected.

[0065] As Figures 1 to 5As shown, along the circumferential direction of the fan 20, the air outlet end also has a middle air outlet area 250 between the strong air outlet area 230 and the weak air outlet area 240, and the middle air outlet areas 250 of the two fans 20 are oppositely arranged, and the air flows of the two middle air outlet areas 250 are opposite or the air outlets are opposite, and form air flow extending in the same direction as the axial direction of the fan 20.

[0066] Among them, the middle air outlet area 250 of the fan 20 is located in the middle part of the air outlet end, and the middle air outlet areas 250 of the two fans 20 are oppositely arranged to realize the air flow of the middle air outlet areas 250 of the two fans 20.

[0067] Specifically, the air outlet flow of the middle air outlet area 250 of the two fans 20 is equivalent, and then the air flow of the two fans 20 at the middle air outlet area 250 is opposite to form an upward air flow, and the upward air flow flows to the heating air outlet 310.

[0068] Further, the fan 20 further comprises a guide plate arranged in the inside of the confluence cavity 30, and the guide plate has a guide arc surface extending in the axial direction of the fan 20, and the guide arc surface is used for guiding the air flow of the middle air outlet area 250. The guide plate is used for guiding the air flow of the middle air outlet area 250 along the guide arc surface in the confluence cavity 30, and finally makes the air flow from the middle air outlet area 250 rise along the side towards the heating air outlet 310. By arranging the guide plate, the efficiency of the air flow of the middle air outlet area 250 rising, that is, flowing towards the heating air outlet 310, is improved, and the loss caused by the direct collision of the air flow of the middle air outlet area 250 of the two fans 20 is reduced.

[0069] Further, the two ends of the guide plate along the circumferential direction of the fan 20 are arranged in the air outlet end of the fan 20. The two inner wall surfaces are spaced apart to provide avoidance for the formation of the spiral air flow, and facilitate the spiral rising of the spiral air flow.

[0070] Further, the extension direction of the projection of the guide plate on the bottom surface of the shell 10 is perpendicular to the air outlet direction / air outlet end of the fan 20, and the extension direction of the guide plate is perpendicular to the air outlet direction of the fan 20, which is beneficial to the air flow of the middle air outlet area 250 directly guided by the guide plate and then flowing to the heating air outlet 310, and improves the flow efficiency of the heating gas. Or the guide plate is directed to be substantially parallel to the width direction of the shell 10, or the included angle between the guide plate and the width direction of the shell 10 is an acute angle.

[0071] In the embodiment, the exhaust port is arranged on the converging cavity 30 and faces the side wall of the shell 10. The heating device further comprises a conversion plate which is arranged at the exhaust port in an openable and closable manner. Specifically, the side wall of the outlet end of the two fans 20 is formed with an exhaust port which is in communication with the converging cavity 30. The heating device further comprises a conversion plate which is arranged at the exhaust port in an openable and closable manner. The heating device further comprises a driving member, which can be a motor or the like. The driving member is in driving connection with the conversion plate and provides driving force for the position switching of the conversion plate.

[0072] The heating device has a heating state and an exhaust state. When the heating device is in the heating state, the conversion plate blocks the exhaust port and is in a closed position, so that the airflow in the converging cavity 30 cannot be discharged from the exhaust port. The partition plate is in the second position, so that the airflow in the converging cavity 30 flows out of the heating outlet 310 after being heated by the heating member. When the heating device is in the exhaust state, the conversion plate avoids the exhaust port and is in an open position. The partition plate is in the first position, so that the airflow in the converging cavity 30 cannot be in contact with the heating member and cannot flow out of the heating outlet 310. The airflow flows out of the exhaust port and is only used for supplying air outward.

[0073] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

[0074] The heating device of the present application adopts two fans 20 to form a converging cavity 30 in cooperation, and the strong air outlet area 230 and the weak air outlet area 240 of the two fans 20 are arranged opposite to each other, so as to form a spiral airflow in the converging cavity 30. The overall structure is simple, which is beneficial to improve the assembly efficiency. The spiral airflow formed by the cooperation of the two fans 20 is beneficial to improve the air supply efficiency, and further improve the experience of the heating device.

[0075] Obviously, the above-mentioned embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0076] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, work, device, component and / or combination thereof.

[0077] It should be noted that the terms "first", "second", and the like in the description and in the claims of the present application and in the above-described drawings are used only for distinguishing between similar objects and do not necessarily have to describe a specific sequential or chronological order. It is to be understood that the data so distinguished can be interchanged, under appropriate circumstances, such that the embodiments of the present application described herein can be practiced in other than the illustrated or described order.

[0078] The preferred embodiments of the present application have been described above with the specific details. Obviously, the present application can be carried out without the specific details. It is to be understood that the above-described embodiments are only used to illustrate the present application, and the present application can be modified and changed in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A heating device, characterized in that, The heating device comprises: a housing (10); a fan assembly arranged inside the housing (10), the fan assembly comprising two fans (20) with their air outlet ends facing each other, the air outlet ends of the two fans (20) facing each other to form a converging cavity (30); the air outlet ends of the fans (20) are formed with a strong air outlet area (230) and a weak air outlet area (240) along the circumferential direction of the fans (20), the strong air outlet area (230) of one fan (20) and the weak air outlet area (240) of the other fan (20) at least partially face each other, so that the air flow of the two fans (20) forms a spiral air flow in the converging cavity (30).

2. A heating apparatus according to claim 1, characterised in that, The air outlet ends of the fans (20) have air duct walls, at least one side of the air duct walls of the two fans (20) are connected, the air duct walls comprise two plate segments arranged at intervals along the circumferential direction of the fans (20), the strong air outlet area (230) is close to one of the plate segments, and the weak air outlet area (240) is close to the other plate segment.

3. The heating device according to claim 1, wherein the air outlet flow of the strong air outlet area (230) of one fan (20) is Q1, the air outlet flow of the weak air outlet area (240) of the other fan (20) is Q2, and (Q1-Q2)≤20% (Q1+Q2).

4. The heating apparatus according to claim 1, wherein The converging cavity (30) is provided with a heating air outlet (310), the air outlet ends of the two fans (20) are in communication with the converging cavity (30) and the heating air outlet (310), the opening direction of the heating air outlet (310) is arranged along the axial direction of the fans (20), and the spiral air flow in the converging cavity (30) rises along the side facing the heating air outlet (310).

5. A heating apparatus according to claim 4, wherein The air outlet ends of the fans (20) have air duct walls, the air duct walls of the two fans (20) are connected, and the air duct walls of the two fans (20) are connected to form the converging cavity (30), and the top end of the converging cavity (30) is formed into the heating air outlet (310) by being provided with a notch.

6. A heating apparatus according to claim 4, characterised in that, The heating device further comprises: a heating element arranged at the heating air outlet (310), and the spiral air flow flows out of the heating air outlet (310) through the heating element.

7. A heating apparatus according to claim 6, characterised in that, The heating device further comprises: a partition plate movably arranged inside the converging cavity (30), the partition plate having a first position for shielding the heating element and the heating air outlet (310) and a second position for avoiding the heating element and the heating air outlet (310).

8. The heating device according to claim 7, wherein the partition plate is slidingly arranged with the inner wall of the converging cavity (30), the partition plate is parallel to the bottom surface of the housing (10), and the partition plate slides up and down between the first position and the second position; or the partition plate is rotationally arranged on one of the inner walls of the converging cavity (30), and the partition plate flips between the first position and the second position.

9. The heating device according to claim 1, wherein, the air outlet ends of the two fans (20) form the converging cavity (30) in a cubic structure; and / or the air outlet ends of the two fans (20) are detachably connected.

10. The heating apparatus according to claim 4, wherein Along the circumferential direction of the fan (20), the air outlet end further has a middle air outlet area (250) between the strong air outlet area (230) and the weak air outlet area (240), the middle air outlet areas (250) of the two fans (20) are oppositely arranged, and the air outlet directions of the two middle air outlet areas (250) are opposite and form air flow extending in the same direction as the axial direction of the fan (20).

11. A heating apparatus according to claim 10, characterised in that, The fan (20) further comprises a guide plate arranged inside the converging cavity (30), the guide plate has a guide arc surface extending in the axial direction of the fan (20), the guide plate is used for guiding the air flow of the middle air outlet area (250) along the guide arc surface in the converging cavity (30), and finally makes the air flow from the middle air outlet area (250) rise on the side towards the heating air outlet (310).

12. The heating device according to claim 11, wherein, along the circumferential direction of the fan (20), the two ends of the guide plate are arranged in a spaced manner with the inner wall surface of the converging cavity (30); and / or the extension direction of the projection of the guide plate on the bottom surface of the shell (10) is perpendicular to the air outlet end of the fan (20); and / or the guide plate is parallel to the width direction of the shell (10), or the included angle between the guide plate and the width direction of the shell (10) is an acute angle.

13. A heating apparatus as claimed in any one of claims 1 to 12, wherein, an exhaust port is arranged on the converging cavity (30) and faces the side wall of the shell (10), and the heating device further comprises a conversion plate which is arranged at the exhaust port in an openable and closable manner.

14. A heating apparatus as claimed in any one of claims 1 to 12, wherein, The two fan assemblies are arranged in a spaced manner along the length direction of the shell (10) inside the shell (10), the air outlet ends of the two fan assemblies face opposite directions, and the air outlet ends of the two fan assemblies are parallel to the length direction of the shell (10) or the included angle between the air outlet ends of the two fan assemblies and the length direction of the shell (10) is an acute angle.

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