Wind warming device

Abstract

The present disclosure provides a wind heating device, belonging to the technical field of household appliances. The wind heating device comprises a box body, a fan assembly, an air exchange air duct, a first sealing mechanism and a second sealing mechanism. The box body has a first air inlet and a first air exchange port. The fan assembly has a second air inlet, a second air exchange port and an air outlet. The fan assembly is located inside the box body. The second air inlet is in communication with the first air inlet. The second air exchange port is in communication with the first air exchange port through the air exchange air duct. The air outlet is in communication with the outside of the box body. In the air supply mode, the first sealing mechanism closes the second air exchange port, the second sealing mechanism opens the air outlet, the fan assembly sucks air from the room, and the air is sent to the room through the air outlet. In the air exchange mode, the first sealing mechanism opens the second air exchange port, the second sealing mechanism closes the air outlet, the fan assembly sucks air from the room, and the air is discharged to the outside through the second air exchange port, the air exchange air duct and the first air exchange port.

Description

Technical Field

[0001] This disclosure relates to the field of home appliance technology, and in particular to a fan-heating device. Background Technology

[0002] Fan heaters generally have a blowing mode and a ventilation mode. In blowing mode, the fan heater sends warm air into the room, and in ventilation mode, the fan heater exhausts the indoor air to the outside.

[0003] In related technologies, the air-heating equipment includes a housing, a first fan, and a second fan. The housing has an air inlet, an air outlet, and a ventilation outlet. In blowing mode, the first fan operates, and indoor air enters through the air inlet and then flows into the room through the air outlet. In ventilation mode, the second fan operates, and indoor air enters through the air inlet and then exits the room through the ventilation outlet.

[0004] Because the air-heating equipment has two fans, it is relatively large and expensive. Summary of the Invention

[0005] This disclosure provides a fan-heating device that can solve the technical problems existing in related technologies. The technical solution of the fan-heating device is as follows:

[0006] This disclosure provides a fan-heated device, which includes a housing, a fan assembly, a ventilation duct, a first sealing mechanism, and a second sealing mechanism;

[0007] The housing has a first air inlet and a first ventilation outlet, and the fan assembly has a second air inlet, a second ventilation outlet, and an air supply outlet;

[0008] The fan assembly is located inside the housing, the second air inlet is connected to the first air inlet, the second air exchange port is connected to the first air exchange port through the air exchange duct, and the air outlet is connected to the outside of the housing.

[0009] The first sealing mechanism and the second sealing mechanism are configured as follows:

[0010] In the air supply mode, the first sealing mechanism closes the second air exchange port, and the second sealing mechanism opens the air supply port; in the ventilation mode, the first sealing mechanism opens the second air exchange port, and the second sealing mechanism closes the air supply port.

[0011] In one possible implementation, the fan assembly includes a housing, an inner housing, and a fan;

[0012] The outer casing has a second air inlet and a second ventilation outlet;

[0013] The inner shell is fixed inside the outer shell, and an annular air outlet is formed between the outer shell and the inner shell;

[0014] The fan is located inside the housing.

[0015] In one possible implementation, the outer casing is bowl-shaped, with a second air inlet at the small-diameter end of the outer casing, a second ventilation port on the side of the outer casing, and an annular air outlet formed between the large-diameter end of the outer casing and the inner casing.

[0016] In one possible implementation, the fan is a mixed-flow fan and is coaxial with the annular air outlet.

[0017] In one possible implementation, the first sealing mechanism includes a damper and a first drive component;

[0018] The damper is located at the second air exchange port, and the first driving component is used to drive the damper to open or close the second air exchange port.

[0019] In one possible implementation, when the damper closes the second ventilation port, the sidewall of the damper facing the fan matches the shape of the inner wall of the housing.

[0020] In one possible implementation, the air outlet is annular, and the second sealing mechanism includes a first support ring, multiple sealing plates, and a second driving component.

[0021] The first support ring surrounds the air outlet, or the air outlet surrounds the first support ring;

[0022] The plurality of sealing pieces are distributed along the circumference of the first support ring and are slidably connected to the first support ring;

[0023] The second driving component is configured to drive the plurality of sealing plates to slide into the air outlet to close the air outlet; or to drive the plurality of sealing plates to slide out of the air outlet to open the air outlet.

[0024] In one possible implementation, the first support ring has a plurality of first grooves distributed along the circumference of the first support ring;

[0025] The sealing sheet has a slider, and the sliders of the plurality of sealing sheets are respectively located in the plurality of first grooves.

[0026] In one possible implementation, the second driving component includes a rotating ring and a driving member;

[0027] Both the first support ring and the rotating ring surround the air outlet. The rotating ring is kinetically connected to the plurality of sealing plates, and the plurality of sealing plates are located between the first support ring and the rotating ring.

[0028] The driving component is located outside the rotating ring. The driving component is used to drive the rotating ring to rotate. When the rotating ring rotates in the first direction, the rotating ring drives the plurality of sealing plates to slide into the air outlet. When the rotating ring rotates in the second direction, the rotating ring drives the plurality of sealing plates to slide out of the air outlet.

[0029] In one possible implementation, the second sealing mechanism includes a first sealing plate, a second sealing plate, and a third driving component;

[0030] The first sealing plate has a first notch, and the second sealing plate has a second notch, with the first notch and the second notch facing each other;

[0031] The third drive component is configured as follows:

[0032] The first and second sealing plates are driven to slide relative to each other to close the air outlet, wherein when the first and second sealing plates close the air outlet, the first and second notches abut against the inner shell; or...

[0033] The first sealing plate and the second sealing plate are driven to slide back to back to open the air outlet.

[0034] In one possible implementation, the air-heating device further includes a heater located at the second air inlet.

[0035] The technical solution provided in this disclosure includes at least the following beneficial effects:

[0036] This disclosure provides a fan-heated device. In the air supply mode, the first sealing mechanism of the fan-heated device closes the second ventilation port, and the second sealing mechanism opens the air supply port. The fan assembly then draws air from the room through the first air inlet and supplies air to the room through the air supply port. By setting the first and second sealing mechanisms to open or close the air supply port and the second ventilation port, in the ventilation mode, when the first sealing mechanism opens the second ventilation port and the second sealing mechanism closes the air supply port, the fan assembly draws air from the room through the first air inlet. Since the air supply port is closed at this time, the air inside the fan assembly is sequentially discharged to the outside through the second ventilation port, the ventilation duct, and the first ventilation port.

[0037] As can be seen, the air-heating device provided in this disclosure opens or closes the air supply port and the second ventilation port by setting the first sealing mechanism and the second sealing mechanism, so that only one fan component is needed to realize both the blowing mode and the ventilation mode. The air-heating device can have a smaller size and can reduce costs.

[0038] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0039] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. In the drawings:

[0040] Figure 1 This is a schematic diagram of the structure of a fan-heated device shown in an embodiment of this disclosure;

[0041] Figure 2 This is a schematic diagram of the wind direction in a wind-heating device according to an embodiment of this disclosure;

[0042] Figure 3 This is an exploded view of a fan-heated device shown in an embodiment of this disclosure;

[0043] Figure 4 This is a partial structural schematic diagram of a fan-heated device shown in an embodiment of the present disclosure;

[0044] Figure 5 This is a partial structural schematic diagram of a fan-heated device shown in an embodiment of the present disclosure;

[0045] Figure 6 This is a partial structural schematic diagram of a fan-heated device shown in an embodiment of the present disclosure;

[0046] Figure 7 This is a schematic diagram of the structure of a ventilation duct and a first sealing mechanism shown in an embodiment of this disclosure;

[0047] Figure 8 This is a schematic diagram of the structure of a second sealing mechanism for opening and closing the air supply port, as shown in an embodiment of this disclosure;

[0048] Figure 9 This is an exploded view of a second sealing mechanism shown in an embodiment of this disclosure;

[0049] Figure 10 This is a schematic diagram of the wind direction in a wind turbine assembly according to an embodiment of the present disclosure;

[0050] Figure 11 This is a schematic diagram of a sealing sheet according to an embodiment of the present disclosure;

[0051] Figure 12 This is a schematic diagram of the structure of a wind turbine assembly shown in an embodiment of this disclosure;

[0052] Figure 13 This is a partial structural schematic diagram of a wind turbine assembly shown in an embodiment of this disclosure;

[0053] Figure 14 This is a schematic diagram of the structure of a second sealing mechanism for opening and closing the air supply port, as shown in an embodiment of this disclosure;

[0054] Figure 15 This is a schematic diagram of the structure of a support plate shown in an embodiment of this disclosure.

[0055] Legend:

[0056] 1. Enclosure; 101. Cover plate; 102. Enclosure; 11. First air inlet; 12. First ventilation outlet;

[0057] 2. Fan assembly; 21. Second air inlet; 22. Second air exchange outlet; 23. Air outlet; 24. Outer shell; 25. Inner shell; 251. Sealing groove; 252. Sealing protrusion; 26. Fan.

[0058] 3. Ventilation duct;

[0059] 4. First sealing mechanism; 41. Damper; 411. Mounting protrusion; 412. Sealing edge; 42. First driving component;

[0060] 5. Second sealing mechanism; 51. First support ring; 510. First slide groove; 52. Sealing plate; 520. Slider; 521. Groove; 522. Protrusion; 523. Protrusion; 53. Second driving component; 531. Rotating ring; 5310. Second slide groove; 5311. First gear structure; 532. Driving component; 533. First gear; 54. First sealing plate; 540. First notch; 541. First rack; 542. First guide bar; 55. Second sealing plate; 550. Second notch; 551. Second rack; 552. Second guide bar; 56. Third driving component; 561. Motor; 562. Second gear; 57. Second support ring; 58. Support plate;

[0061] 6. Heater.

[0062] The accompanying drawings have illustrated specific embodiments of this disclosure, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this disclosure to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0063] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings.

[0064] The terminology used in the embodiments of this disclosure is for illustrative purposes only and is not intended to limit the disclosure. Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “a” or “one,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising,” “including,” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected,” “linked,” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0065] This disclosure provides a fan-heated device, such as... Figure 1 and Figure 2 As shown, the air-cooled heating device includes a housing 1, a fan assembly 2, a ventilation duct 3, a first sealing mechanism 4, and a second sealing mechanism 5. The housing 1 has a first air inlet 11 and a first ventilation outlet 12. The fan assembly 2 has a second air inlet 21, a second ventilation outlet 22, and an air outlet 23. The fan assembly 2 is located inside the housing 1. The second air inlet 21 is connected to the first air inlet 11, the second ventilation outlet 22 is connected to the first ventilation outlet 12 through the ventilation duct 3, and the air outlet 23 is connected to the outside of the housing 1.

[0066] The first sealing mechanism 4 and the second sealing mechanism 5 are configured as follows:

[0067] like Figure 2 As shown in the lower part, in the air supply mode, the first sealing mechanism 4 closes the second ventilation port 22, and the second sealing mechanism 5 opens the air supply port 23. The fan assembly 2 draws in air through the first air inlet 11 and the second air inlet 21, and supplies air to the room through the air supply port 23.

[0068] In ventilation mode, the first sealing mechanism 4 opens the second ventilation port 22, and the second sealing mechanism 5 closes the air supply port 23. The fan assembly 2 draws in indoor air through the first air inlet 11 and the second air inlet 21, and exhausts the indoor air to the outside through the second ventilation port 22, the ventilation duct 3, and the second ventilation port 22 in sequence.

[0069] As can be seen, the air-heating device provided in this embodiment opens or closes the air supply port and the second ventilation port by setting a first sealing mechanism and a second sealing mechanism, so that only one fan assembly 2 is needed to realize both the blowing mode and the ventilation mode, which makes the air-heating device smaller in size and reduces the manufacturing cost of the air-heating device.

[0070] The following provides a more detailed exemplary description of the various components involved in the embodiments of this disclosure:

[0071] (1) Box 1

[0072] like Figure 3 As shown, the housing 1 includes a cover plate 101 and a housing body 102. There are two first air inlets 11, located on the cover plate 101, and the first air exchange port 12 is located on the side wall of the housing body 102.

[0073] (2) Fan assembly 2

[0074] In some examples, such as Figure 3 and 4 As shown, the fan assembly 2 includes a housing 24, an inner housing 25, and a fan 26. The housing 24 has a second air inlet 21 and a second ventilation outlet 22. The inner housing 25 is fixed inside the housing 24, and an annular air outlet 23 is formed between the housing 24 and the inner housing 25. The fan 26 is located inside the housing 24.

[0075] In some examples, such as Figure 4 As shown, the fan 26 is connected to the inner casing 25. Of course, in some other examples, the fan 26 may also be connected to the outer casing 24, and this disclosure does not limit this aspect.

[0076] In some examples, such as Figure 3 , Figure 4 and Figure 6 As shown, the outer shell 24 is bowl-shaped, with a second air inlet 21 at the small diameter end of the outer shell 24, a second air exchange port 22 on the side of the outer shell 24, and an annular air outlet 23 formed between the large diameter end of the outer shell 24 and the inner shell 25.

[0077] In some examples, fan 26 is a diagonal-flow fan and is coaxial with the annular air outlet 23. The diagonal-flow fan minimizes the change in airflow direction as it transitions from a stationary state to an accelerated state and then into the room. Simultaneously, the simplified internal structure of the diagonal-flow fan reduces airflow resistance, resulting in minimal airflow loss and ensuring sufficient air volume. The simple internal structure of the diagonal-flow fan allows for smoother airflow within fan 26, reducing noise and ensuring uniform airflow velocity at all locations within the air outlet 23, eliminating areas of significantly lower or higher airflow and allowing for even diffusion of air into the room.

[0078] (3) Ventilation duct 3

[0079] In some examples, such as Figure 7 As shown, the end of the ventilation duct 3 that connects to the second ventilation port 22 can be elliptical, and the end that connects to the outer shell 24 can be rectangular.

[0080] (4) First sealing mechanism 4

[0081] In some examples, such as Figure 5 As shown, the first sealing mechanism 4 includes a damper 41 and a first driving component 42. The damper 41 is located at the second ventilation port 22, and the first driving component 42 is used to drive the damper 41 to open or close the second ventilation port 22.

[0082] In some examples, the damper 41 may also be located at the first air inlet 12, or at any location within the air duct 3.

[0083] In some examples, such as Figure 6 As shown, when the damper 41 closes the second ventilation port 22, the shape of the side wall of the damper 41 facing the fan 26 matches the shape of the inner wall of the outer casing 24. Alternatively, it can be understood that the curvature of the inner wall of the damper 41 is the same as the curvature of the inner wall of the outer casing 24. In this way, in the air supply mode, the inner wall of the outer casing 24 is a complete arc along the circumference, reducing the impact of the second ventilation port 22 on the air supply of the air-heating equipment in the air supply mode.

[0084] When the damper 41 closes the second air exchange port 22, the side wall of the damper 41 away from the air exchange duct 3 is the inner wall of the damper 41.

[0085] In some examples, such as Figure 7 As shown, the damper 41 has a mounting protrusion 411, and the ventilation duct 3 has a damper mounting groove. The mounting protrusion 411 is rotatably connected to the baffle mounting groove. The side of the mounting protrusion 411 has a motor mounting groove, and the output shaft of the first drive component 42 is fixed in the motor mounting groove.

[0086] In some examples, such as Figure 7As shown, the damper 41 has a sealing edge 412 around its perimeter, which is used to seal the gap between the damper 41 and the ventilation duct 3 to prevent air leakage.

[0087] (5) Second sealing mechanism 5

[0088] In some examples, such as Figure 8 and Figure 9 As shown, the second sealing mechanism 5 includes a first support ring 51, a plurality of sealing plates 52, and a second driving component 53. The first support ring 51 surrounds the air outlet 23, or the air outlet 23 surrounds the first support ring 51. The plurality of sealing plates 52 are distributed circumferentially along the first support ring 51 and are slidably connected to the first support ring 51. The second driving component 53 is configured to drive the plurality of sealing plates 52 to slide into the air outlet 23 to close the air outlet 23, or to drive the plurality of sealing plates 52 to slide out of the air outlet 23 to open the air outlet 23.

[0089] It should be noted that, when the first support ring 51 surrounds the air outlet 23, multiple sealing plates 52 slide towards the inside of the first support ring 51 to close the air outlet 23, and multiple sealing plates 52 slide towards the outside of the first support ring 51 to open the air outlet 23.

[0090] In the case where the air outlet 23 surrounds the first support ring 51, multiple sealing plates 52 slide to the outside of the first support ring 51 to close the air outlet 23, and multiple sealing plates 52 slide to the inside of the first support ring 51 to open the air outlet 23.

[0091] like Figure 10 As shown in the lower part, in the air supply mode, the second drive component 53 drives the sealing plate 52 to open the air outlet 23, enabling the air heating device to supply air into the room. Figure 10 As shown in the upper part, in ventilation mode, the second drive component 53 drives the sealing plate 52 to close the air outlet 23, preventing air from entering the room from the box 1.

[0092] It should be noted that when the room does not require air supply or ventilation, the second drive component 53 drives the sealing plate 52 to close the air supply port 23, thereby preventing impurities in the indoor air from entering the interior of the housing 1.

[0093] The following is an exemplary description of the method by which the first support ring 51 and the sealing sheet 52 slide together:

[0094] In some examples, such as Figure 8 and Figure 9 As shown, the first support ring 51 has a plurality of first grooves 510, which are distributed circumferentially along the first support ring 51. The sealing sheet 52 has a slider 520, and the sliders 520 of the plurality of sealing sheets 52 are respectively located in the plurality of first grooves 510.

[0095] Among them, such as Figure 8 and Figure 9 As shown, the first groove 510 is a straight groove, and the slider 520 is a strip-shaped slider. The two side walls of the slider 520 are in contact with the two side walls of the first groove 510. Thus, when the second driving component 53 drives the sealing sheet 52 to slide, the slider 520 can only move linearly along the first groove 510 and cannot rotate, thereby causing the sealing sheet 52 to move linearly along the first groove 510.

[0096] Of course, in other examples, the first support ring 51 may have a strip slider and the sealing sheet 52 may have a straight groove. When the second drive component 53 drives the sealing sheet 52 to slide, the straight groove of the sealing sheet 52 slides along the strip slider of the first support ring 52.

[0097] To enhance the sealing strength of the air outlet 23, the multiple sealing plates 52 need to have a good sealing effect. The following is an illustrative description of how the multiple sealing plates 52 achieve a seal:

[0098] In some examples, such as Figure 11 As shown, each sealing plate 52 has a groove 521 on one side and a protrusion 522 on the other side. The protrusion 522 of each sealing plate 52 extends into the groove 321 of the adjacent sealing plate 52. In this way, the adjacent portions of two adjacent sealing plates 52 overlap, making it difficult for air to leak out from the gap between the two adjacent sealing plates 52.

[0099] The protruding plate 522 can be considered as a thin plate extending from the sealing sheet 52, and the thickness of the protruding plate 522 is less than the thickness of the sealing sheet 52 body. Multiple sealing sheets 52 are arranged in an alternating layered manner, forming a ring.

[0100] For example, such as Figure 11 As shown, the sealing sheet 52 can be quadrilateral.

[0101] like Figure 12 and Figure 13 As shown, Figure 13 for Figure 12 A partial enlarged view. To enhance the airtightness of the air outlet 23, the outer wall of the inner shell 25 of the fan assembly 2 has staggered sealing grooves 251 and sealing protrusions 252 along the circumferential direction. Multiple sealing pieces 52 extend into multiple sealing grooves 251 respectively, and each sealing protrusion 252 extends toward the junction area of ​​a pair of sealing pieces 52.

[0102] The following is an exemplary description of how the second driving component 53 drives the sealing plate 52:

[0103] In some examples, such as Figure 8 and Figure 9As shown, the second driving component 53 includes a rotating ring 531 and a driving member 532. The rotating ring 531 is kinetically connected to a plurality of sealing plates 52, and the plurality of sealing plates 52 are located between the first support ring 51 and the rotating ring 531. The driving member 532 is used to drive the rotating ring 531 to rotate, and when the rotating ring 531 rotates in a first direction, the rotating ring 531 drives the plurality of sealing plates 52 to slide into the air outlet 23, and when the rotating ring 531 rotates in a second direction, the rotating ring 531 drives the plurality of sealing plates 52 to slide out of the air outlet 23.

[0104] The first direction is opposite to the second direction. The driving component 532 can be a motor.

[0105] In some examples, where the rotating ring 531 and the first support ring 51 surround the air outlet 23, the drive member 532 is located outside the rotating ring 531, so that the drive member 532 does not block the airflow of the fan 26.

[0106] In some examples, such as Figure 8 and Figure 9 As shown, the rotating ring 531 has a plurality of second grooves 5310, which are distributed circumferentially along the rotating ring 531. Figure 8 As shown, the sealing sheet 52 has a protrusion 523, and the protrusions 523 of the multiple sealing sheets 52 are respectively located in multiple second grooves 5310.

[0107] In some examples, such as Figure 9 As shown, protrusion 523 is a columnar protrusion, and the second groove 5310 is a straight groove. When the rotating ring 531 rotates, since the sealing sheet 52 is limited by the first groove 510, the sealing sheet 52 will not rotate with the rotating ring 531, and the second groove 5310 will push the protrusion 523 from one end of the second groove 5310 to the other end. The rotating ring 531 provides power to the sealing sheet 52, and the first support ring 51 restricts the direction of movement of the sealing sheet 52, so that multiple sealing sheets 52 can complete a rotational contraction and opening movement similar to the aperture of a camera.

[0108] In some examples, such as Figure 8 and Figure 9 As shown, the second driving component 53 further includes a first gear 533, and the driving component 532 is connected to the first gear 533 in a transmission manner. The side wall of the rotating ring 531 has a first gear structure 5311, which meshes with the first gear 533. When the driving component 532 rotates, the first gear 533 drives the rotating ring 531 to rotate through the first gear structure 5311.

[0109] In some examples, such as Figure 9 and Figure 12As shown, the second sealing mechanism 5 also includes a second support ring 57. The longitudinal section of the second support ring 57 is L-shaped. One end of the second support ring 57 is fixed to the outer wall of the housing 24 of the fan assembly 2, and the other end is connected to the first support ring 51. The end face of the first support ring 51 and the end face of the second support ring 58 are fully fitted together to fill the gap between the housing 24 and the cover plate 101.

[0110] In addition to the above-described implementation, the second sealing mechanism 5 can also be implemented in other examples, such as... Figure 14 As shown, the second sealing mechanism 5 includes a first sealing plate 54, a second sealing plate 55, and a third driving component 56. The first sealing plate 54 has a first notch 540, and the second sealing plate 55 has a second notch 550, with the first notch 540 and the second notch 550 facing each other.

[0111] The third drive component 56 is configured to drive the first sealing plate 54 and the second sealing plate 55 to slide relative to each other to close the air outlet 23, wherein when the first sealing plate 54 and the second sealing plate 55 close the air outlet 23, the first notch 540 and the second notch 550 abut against the inner shell 25. Alternatively, it can drive the first sealing plate 44 and the second sealing plate 45 to slide away from each other to open the air outlet 23.

[0112] In some examples, such as Figure 14 As shown, the third drive component 56 includes a motor 561 and a second gear 562, with the motor 561 and the second gear 562 being connected in a transmission relationship. The first sealing plate 54 has a first rack 541, and the second sealing plate 55 has a second rack 551, both of which mesh with the second gear 562. The second gear 562 is located between the first rack 541 and the second rack 551. When the second gear 562 rotates, the first rack 541 and the second rack 551 move in opposite directions, causing the first sealing plate 54 and the second sealing plate 55 to move closer or further apart. After the first sealing plate 54 and the second sealing plate 55 approach each other until they contact, they surround the sidewall of the air outlet 23, thereby sealing the air outlet 23.

[0113] like Figure 14 As shown, in blowing mode, the third drive component 56 drives the first sealing plate 54 and the second sealing plate 55 away from each other until the air outlet 23 is fully exposed. In ventilation mode, the third drive component 56 drives the first sealing plate 54 and the second sealing plate 55 closer to each other until the air outlet 23 is closed.

[0114] like Figure 15As shown, the second sealing mechanism 5 also includes a support plate 58, which is fixed to the outer casing 24. The support plate 58 has a guide rail 581, the first sealing plate 54 has a first guide strip 542, and the second sealing plate 55 has a second guide strip 552. Both the first guide strip 542 and the second guide strip 552 are slidably connected to the guide rail 581. The motor 561 is fixed to the side wall of the support plate 58.

[0115] (6) The air heating equipment also includes a heater 6

[0116] In some examples, heater 6 is located between the first air inlet 11 and the air outlet 23. Heater 6 is used to heat the airflow flowing through heater 6 so that the air blown into the room is hot air.

[0117] In some examples, such as Figure 4 As shown, heater 6 is located at the second air inlet 21.

[0118] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A type of air-heating device, characterized in that, The air-heating equipment includes a housing (1), a fan assembly (2), a ventilation duct (3), a first sealing mechanism (4), and a second sealing mechanism (5); The housing (1) has a first air inlet (11) and a first ventilation outlet (12). The fan assembly (2) is located inside the housing (1), and the fan assembly (2) includes an outer shell (24), an inner shell (25) and a fan (26). The outer shell (24) has a second air inlet (21) at its small diameter end and a second air exchange port (22) on its side. The second air inlet (21) is connected to the first air inlet (11), and the second air exchange port (22) is connected to the first air exchange port (12) through the air exchange duct (3). The fan (26) is located inside the outer shell (24), and the inner shell (25) is fixed inside the outer shell (24). An annular air outlet (23) is formed between the large diameter end of the outer shell (24) and the inner shell (25). The air outlet (23) is connected to the outside of the box (1). The first sealing mechanism (4) and the second sealing mechanism (5) are configured as follows: In the air supply mode, the first sealing mechanism (4) closes the second air exchange port (22), and the second sealing mechanism (5) opens the air supply port (23); in the air exchange mode, the first sealing mechanism (4) opens the second air exchange port (22), and the second sealing mechanism (5) closes the air supply port (23).

2. The air-heating device according to claim 1, characterized in that, The outer shell (24) is bowl-shaped.

3. The air-heating device according to claim 1, characterized in that, The fan (26) is a mixed-flow fan and is coaxial with the annular air outlet (23).

4. The air-heating device according to claim 1, characterized in that, The first sealing mechanism (4) includes a damper (41) and a first drive component (42); The damper (41) is located at the second air exchange port (22), and the first driving component (42) is used to drive the damper (41) to open or close the second air exchange port (22).

5. The air-heating device according to claim 4, characterized in that, When the damper (41) closes the second ventilation port (22), the side wall of the damper (41) facing the fan (26) matches the shape of the inner wall of the outer casing (24).

6. The air-heating device according to claim 1, characterized in that, The air outlet (23) is annular, and the second sealing mechanism (5) includes a first support ring (51), multiple sealing plates (52), and a second driving component (53). The first support ring (51) surrounds the air outlet (23), or the air outlet (23) surrounds the first support ring (51). The plurality of sealing pieces (52) are distributed circumferentially along the first support ring (51) and are slidably connected to the first support ring (51); The second drive component (53) is configured to drive the plurality of sealing plates (52) to slide into the air outlet (23) to close the air outlet (23); or to drive the plurality of sealing plates (52) to slide out of the air outlet (23) to open the air outlet (23).

7. The air-heating device according to claim 6, characterized in that, The first support ring (51) has a plurality of first grooves (510) distributed along the circumference of the first support ring (51); The sealing sheet (52) has a slider (520), and the sliders (520) of the plurality of sealing sheets (52) are respectively located in the plurality of first grooves (510).

8. The air-heating device according to claim 6, characterized in that, The second driving component (53) includes a rotating ring (531) and a driving member (532); The first support ring (51) and the rotating ring (531) both surround the air outlet (23). The rotating ring (531) is connected to the plurality of sealing plates (52) in a driving connection, and the plurality of sealing plates (52) are located between the first support ring (51) and the rotating ring (531). The driving member (532) is located outside the rotating ring (531). The driving member (532) is used to drive the rotating ring (531) to rotate. When the rotating ring (531) rotates in the first direction, the rotating ring (531) drives the plurality of sealing pieces (52) to slide into the air outlet (23). When the rotating ring (531) rotates in the second direction, the rotating ring (531) drives the plurality of sealing pieces (52) to slide out from the air outlet (23).

9. The air-heating device according to claim 1, characterized in that, The second sealing mechanism (5) includes a first sealing plate (54), a second sealing plate (55), and a third driving component (56); The first sealing plate (54) has a first notch (540), and the second sealing plate (55) has a second notch (550), and the first notch (540) and the second notch (550) are opposite to each other; The third drive component (56) is configured as follows: The first sealing plate (54) and the second sealing plate (55) are driven to slide relative to each other to close the air outlet (23), wherein, when the first sealing plate (54) and the second sealing plate (55) close the air outlet (23), the first notch (540) and the second notch (550) abut against the inner shell (25); or, Drive the first sealing plate (54) and the second sealing plate (55) to slide back to back to open the air outlet (23).

10. The air-heating device according to claim 1, characterized in that, The air-heating device also includes a heater (6), which is located at the second air inlet (21).

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