Cooling and heating fan

Abstract

The present invention relates to the technical field of household appliances, and specifically to a cooling and heating fan, comprising: a housing, provided with a first air outlet and a second air outlet; a heating structure, arranged corresponding to the first air outlet; an air duct housing and a wind wheel arranged in the air duct housing, the air duct housing being provided with an air inlet and an air outlet; a driving device, driving the air duct housing to rotate, so that there is a first state between the air duct housing and the housing, in which the air inlet corresponds to the first air outlet and the air outlet corresponds to the second air outlet, and a second state in which the air inlet corresponds to the second air outlet and the air outlet corresponds to the first air outlet. The air duct housing is driven to rotate by the driving device, so that the air inlet and the air outlet on the air duct housing and the first air outlet and the second air outlet on the housing can have a relative state, thereby enabling the cooling and heating fan to realize the conversion between the first state and the second state, and the cooling and heating fan can turn on the heating structure to realize the warm air outlet mode, and turn off the heating structure to realize the cold air outlet mode, so that the overall structure is relatively simple.

Description

Technical Field

[0001] The invention relates to the technical field of household appliances, and in particular to a cooling and heating fan. Background Art

[0002] As people's living standards improve and their requirements for living environment become higher and higher, the types of products used are increasing, and the requirements for product practicality are getting higher and higher. Based on this, a heating and cooling fan that can take into account both the functions of hot air and cold air has come into being.

[0003] The prior art discloses a cooling and heating tower fan, comprising an outer shell and an air duct structure, wherein the air duct structure comprises a fan wheel, an air duct shell and an air duct formed between the fan wheel and the air duct shell, the air duct shell is provided with an air inlet and an air outlet, the outer shell is provided with an air inlet and two air outlets, and two air outlet channels are provided between the outer shell and the air duct structure. The cold air channel is connected to the cold air outlet through the rotation of the air duct shell to realize the cold air outlet mode, or the hot air channel is connected to the hot air outlet, and a heating element is provided in the hot air channel to realize the hot air outlet mode. However, when the cooling and heating tower fan takes into account both the functions of hot air outlet and cold air outlet, it is necessary to respectively add a cold air channel and a hot air channel between the outer shell and the air duct structure, and the cold air outlet and the hot air outlet are also provided on the outer shell accordingly, which makes the structure of the cooling and heating tower fan more complicated. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of the complex structure of the cooling and heating tower fan in the prior art to realize the cold air and hot air modes, thereby providing a cooling and heating fan with a simple structure.

[0005] A cooling and heating fan, comprising:

[0006] The housing is provided with a first air outlet and a second air outlet;

[0007] A heating structure, arranged corresponding to the first air outlet;

[0008] The air duct structure comprises an air duct housing and a wind wheel arranged in the air duct housing, wherein the air duct housing is provided with an air inlet and an air outlet;

[0009] A driving device drives the air duct shell or the outer shell to rotate, so that there is a first state between the air duct shell and the outer shell, in which the air inlet corresponds to the first air outlet and the air outlet corresponds to the second air outlet, and a second state in which the air inlet corresponds to the second air outlet and the air outlet corresponds to the first air outlet.

[0010] The angle between the air inlet and the air outlet is equal to the angle between the first air outlet and the second air outlet.

[0011] The air inlet is arranged opposite to the air outlet, and the first air outlet is arranged opposite to the second air outlet.

[0012] The maximum length of the air inlet along the radial direction of the wind wheel is greater than the maximum length of the heating structure along the radial direction of the wind wheel.

[0013] The maximum length of the air outlet along the radial direction of the wind wheel is not greater than the maximum length of the heating structure along the radial direction of the wind wheel.

[0014] It also includes a control device, which is electrically connected to the heating structure and the driving device and is suitable for controlling the start and stop of the heating structure and the driving device to drive the air duct shell or the outer shell to rotate.

[0015] The heating structure is arranged at the first air outlet.

[0016] The driving device is fixedly connected to the shell and drives the air duct shell to rotate.

[0017] The heating structure is fixedly connected to the housing.

[0018] The driving device comprises:

[0019] A power device, fixedly connected to the air duct housing;

[0020] A first gear connected to an output shaft of the power device;

[0021] A second gear, fixedly connected to the housing and meshingly connected with the first gear;

[0022] The guide structure is arranged on the shell, and the output shaft is passed through the guide mechanism.

[0023] The guide structure is an arc-shaped hole.

[0024] It also includes a protective sleeve, which is arranged between the inner wall of the guide structure and the output shaft.

[0025] It also includes an air duct support fixedly connected to the shell, and the driving device is arranged on the air duct support.

[0026] The air duct bracket is arranged at the end of the air duct housing.

[0027] The air duct support is provided with a limiting structure, and the wind wheel shaft of the wind wheel is arranged inside the limiting structure.

[0028] The cooling and heating fan is a cooling and heating tower fan.

[0029] The technical solution of the present invention has the following advantages:

[0030] 1. The cooling and heating fan provided by the present invention comprises: an outer shell, provided with a first air outlet and a second air outlet; a heating structure, arranged corresponding to the first air outlet; an air duct structure, comprising an air duct shell and a wind wheel arranged in the air duct shell, the air duct shell being provided with an air inlet and an air outlet; a driving device, driving the air duct shell or the outer shell to rotate, so that there is a first state between the air duct shell and the outer shell, in which the air inlet corresponds to the first air outlet and the air outlet corresponds to the second air outlet, and a second state in which the air inlet corresponds to the second air outlet and the air outlet corresponds to the first air outlet. The duct shell or the outer shell is driven to rotate by a driving device so that the duct shell and the outer shell can rotate relative to each other, and the air inlet and air outlet on the duct shell can have a relative state with the first air outlet and the second air outlet on the outer shell, so that the heating and cooling fan can realize that a heating structure is correspondingly provided at the air inlet of the duct shell in the first state, and a heating structure is correspondingly provided at the air outlet of the duct shell in the second state. When the heating and cooling fan is working, the heating structure can be turned on to realize the warm air mode, or the heating structure can be turned off to realize the cold air mode, so that the overall structure of the heating and cooling fan to realize the heating and cooling functions is relatively simple, which can be realized only by the rotation of the duct shell or the outer shell, without the need to add separate hot air channels and cold air channels in the outer shell and the duct shell.

[0031] 2. In the cooling and heating fan provided by the present invention, the air inlet is arranged opposite to the air outlet, and the first air outlet is arranged opposite to the second air outlet. By arranging the air inlet opposite to the air outlet, and the first air outlet opposite to the second air outlet, when the air duct housing or the outer shell rotates, the transition between the first state and the second state can be realized more conveniently.

[0032] 3. In the cooling and heating fan provided by the present invention, the maximum length of the air inlet along the radial direction of the wind wheel is greater than the maximum length of the heating structure along the radial direction of the wind wheel. By making the maximum length of the air inlet along the radial direction of the wind wheel greater than the maximum length of the heating structure along the radial direction of the wind wheel, when the heating structure is arranged corresponding to the air inlet, the incoming air can be less blocked by the heating structure, and the air can be inhaled to a greater extent, meeting the requirements of the incoming air volume.

[0033] 4. In the cooling and heating fan provided by the present invention, the maximum length of the air outlet along the radial direction of the wind wheel is not greater than the maximum length of the heating structure along the radial direction of the wind wheel. By making the maximum length of the air outlet along the radial direction of the wind wheel not greater than the maximum length of the heating structure along the radial direction of the wind wheel, when the heating structure is arranged corresponding to the air outlet, the outlet air can be heated by the heating structure before being blown out, meeting the temperature requirement when the warm air is discharged.

[0034] 5. The cooling and heating fan provided by the present invention also includes a control device, which is electrically connected to the heating structure and the driving device, and is suitable for controlling the start and stop of the heating structure and the driving device to drive the air duct housing or the outer shell to rotate. By setting the control device, the start and stop of the heating structure can be automatically controlled, and the air duct housing or the outer shell can be automatically driven to rotate, so as to realize the automatic control of the cooling and heating fan and automatically switch the cooling and heating modes.

[0035] 6. In the cooling and heating fan provided by the present invention, the heating structure is arranged at the first air outlet. By arranging the heating structure at the first air outlet, when the heating structure is working, the wind entering the cooling and heating fan through the first air outlet or blowing out of the cooling and heating fan through the first air outlet can pass through the heating structure, and the heating effect is better.

[0036] 7. In the cooling and heating fan provided by the present invention, the driving device is fixedly connected to the shell and drives the air duct housing to rotate. By driving the air duct housing to rotate with the driving device, the air duct housing is smaller in volume than the shell, so the rotation is more stable and reliable.

[0037] 8. The cooling and heating fan provided by the present invention, the driving device includes: a power device, fixedly connected to the air duct housing; a first gear, connected to the output shaft of the power device; a second gear, fixedly connected to the housing, meshingly connected to the first gear; a guide structure, provided on the housing, wherein the output shaft is passed through the guide mechanism. The power device is fixedly connected to the air duct housing, the first gear is connected to the output shaft of the power device, and the power device drives the first gear to rotate when working, and the second gear is fixed to the housing and meshingly connected to the first gear, so that the first gear rotates around the axis of the second gear under the meshing action of the second gear, thereby driving the power device and the air duct housing to rotate.

[0038] 9. The cooling and heating fan provided by the present invention further includes a protective sleeve disposed between the inner wall of the guide structure and the output shaft. By disposing the protective sleeve between the inner wall of the guide structure and the output shaft of the power device, the output shaft of the power device can be protected from wear when the power device moves along the guide structure, thereby extending the service life.

[0039] 10. In the cooling and heating fan provided by the present invention, the air duct bracket is arranged at the end of the air duct housing. By arranging the air duct bracket at the end of the air duct housing, when the driving device drives the air duct housing to rotate, the interference to the wind flow inside the air duct housing can be reduced.

[0040] 11. In the cooling and heating fan provided by the present invention, a limiting structure is provided on the air duct support, and a wind wheel shaft of the wind wheel is provided in the limiting structure. By providing a limiting structure on the air duct support, and a wind wheel shaft is provided in the limiting structure, the wind wheel shaft can be better limited when the wind wheel shaft rotates, and it can be prevented from tipping over when rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 is a cross-sectional view of the cooling and heating fan of the present invention in the cold air mode;

[0043] Figure 2 is a cross-sectional view of the cooling and heating fan of the present invention in the warm air mode;

[0044] Figure 3 It is a partial structural schematic diagram of the cooling and heating fan of the present invention;

[0045] Figure 4 It is a partial structural cross-sectional view of the cooling and heating fan of the present invention;

[0046] Description of reference numerals:

[0047] 1-housing; 2-first air outlet; 3-second air outlet; 4-heating structure; 5-air duct housing; 6-wind wheel; 7-air inlet; 8-air outlet; 9-wind wheel shaft; 10-control panel; 11-motor; 12-first gear; 13-second gear; 14-guide structure; 15-output shaft; 16-sheath; 17-air duct bracket; 18-limiting structure. DETAILED DESCRIPTION

[0048] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0050] like Figure 1 - Figure 4 As shown, a cooling and heating fan is provided in this embodiment, including: a housing 1, an air duct structure and a driving device.

[0051] The outer shell 1 is provided with a first air outlet 2 and a second air outlet 3; a heating structure 4 is arranged corresponding to the first air outlet 2; an air duct structure includes an air duct shell 5 and a wind wheel 6 arranged in the air duct shell 5, an air duct is formed between the air duct shell 5 and the wind wheel 6, and the air duct shell 5 is provided with an air inlet 7 and an air outlet 8; a driving device drives the air duct shell 5 or the outer shell 1 to rotate, so that there is a first state between the air duct shell 5 and the outer shell 1, in which the air inlet 7 corresponds to the first air outlet 2 and the air outlet 8 corresponds to the second air outlet 3, and a second state in which the air inlet 7 corresponds to the second air outlet 3 and the air outlet 8 corresponds to the first air outlet 2.

[0052] The air duct shell 5 or the outer shell 1 is driven to rotate by a driving device, so that the air duct shell 5 and the outer shell 1 can rotate relative to each other, and the air inlet 7 and the air outlet 8 on the air duct shell 5 can have a relative state with the first air outlet 2 and the second air outlet 3 on the outer shell 1, so that the heating and cooling fan can be realized in the first state. The air inlet 7 of the air duct shell 5 is correspondingly provided with a heating structure 4, and the air outlet 8 of the air duct shell 5 is correspondingly provided with a heating structure 4 in the second state. When the heating and cooling fan is working, the heating structure 4 can be turned on to realize the warm air mode, or the heating structure 4 can be turned off to realize the cold air mode, so that the overall structure of the heating and cooling fan to realize the heating and cooling function is relatively simple, which can be realized only by the rotation of the air duct shell 5 or the outer shell 1, without the need to add separate hot air channels and cold air channels in the outer shell 1 and the air duct shell 5.

[0053] Specifically, the driving device in this embodiment is fixedly connected to the outer shell 1, and drives the air duct housing 5 to rotate, and the heating structure 4 is fixedly connected to the outer shell 1. By driving the air duct housing 5 to rotate by the driving device, the rotation is more stable and reliable because the air duct housing 5 is smaller in volume than the outer shell 1. As a convertible embodiment, the driving device may be fixedly connected to the air duct housing 5, and drives the outer shell 1 to rotate, and the heating structure 4 is fixedly connected to the air duct housing 5. As a convertible embodiment, the heating structure 4 may be fixedly connected to other fixed structures (such as the base of a cooling and heating tower fan), as long as it does not interfere with the rotating structure.

[0054] The heating structure 4 in this embodiment is arranged at the first air outlet 2. By arranging the heating structure 4 at the first air outlet 2, when the heating structure 4 is working, the wind entering the cooling and heating fan through the first air outlet 2 or blowing out the cooling and heating fan from the first air outlet 2 can pass through the heating structure 4, and the heating effect is better. As a convertible implementation, the heating structure 4 can also be arranged at a position between the first air outlet 2 and the air duct housing 5, as long as it corresponds to the first air outlet 2 and the position where the wind flows.

[0055] In this embodiment, there are one first air vent 2 and one second air vent 3 respectively. Since only one first air vent 2 and one second air vent 3 are provided on the housing 1 to correspond to the air inlet 7 and the air outlet 8 on the air duct housing 5 respectively, there is no need to add an air outlet 8 on the housing 1, so as to prevent too many air outlets 8 from affecting the overall appearance of the cooling and heating fan, making the appearance of the cooling and heating fan more beautiful. As a convertible embodiment, there may be more than two first air vents 2 and second air vents 3 respectively. In the first state and the second state, the air inlet 7 and the air outlet 8 of the air duct housing 5 can be respectively provided to correspond to one of the first air vents 2 and one of the second air vents 3.

[0056] In order to facilitate the switching between the first state and the second state, the angle between the air inlet 7 and the air outlet 8 in this embodiment is equal to the angle between the first air outlet 2 and the second air outlet 3. Specifically, the air inlet 7 and the air outlet 8 in this embodiment are arranged opposite to each other, and the first air outlet 2 and the second air outlet 3 are arranged opposite to each other. By arranging the air inlet 7 and the air outlet 8 opposite to each other, and the first air outlet 2 and the second air outlet 3 opposite to each other, when the air duct housing 5 rotates 180°, the switching between the first state and the second state can be realized more conveniently. As a convertible embodiment, it is also possible that the air inlet 7 and the air outlet 8 are arranged at other angles, as long as they are equal to the angle between the first air outlet 2 and the second air outlet 3.

[0057] The maximum length of the air inlet 7 in the radial direction of the wind wheel 6 in this embodiment is greater than the maximum length of the heating structure 4 in the radial direction of the wind wheel 6. Preferably, the area of ​​the air inlet 7 is also greater than the area of ​​the heating structure 4. By making the maximum length of the air inlet 7 in the radial direction of the wind wheel 6 greater than the maximum length of the heating structure 4 in the radial direction of the wind wheel 6, when the heating structure 4 is arranged corresponding to the air inlet 7, the incoming air can be less blocked by the heating structure 4, and the air can be more effectively fed in, meeting the requirements of the incoming air volume. As a convertible embodiment, it is also possible that the maximum length of the air inlet 7 in the radial direction of the wind wheel 6 is not greater than the maximum length of the heating structure 4 in the radial direction of the wind wheel 6.

[0058] The maximum length of the air outlet 8 in the present embodiment along the radial direction of the wind wheel 6 is not greater than the maximum length of the heating structure 4 along the radial direction of the wind wheel 6. Preferably, the maximum length of the air outlet 8 along the radial direction of the wind wheel 6 is equal to the maximum length of the heating structure 4 along the radial direction of the wind wheel 6, and the area of ​​the air outlet 8 is equal to the area of ​​the heating structure 4. By making the maximum length of the air outlet 8 along the radial direction of the wind wheel 6 not greater than the maximum length of the heating structure 4 along the radial direction of the wind wheel 6, when the heating structure 4 is arranged corresponding to the air outlet 8, the outlet air can be heated by the heating structure 4 and then blown out, meeting the temperature requirement when the warm air is discharged. As a convertible embodiment, it is also possible that the maximum length of the air outlet 8 along the radial direction of the wind wheel 6 is greater than the maximum length of the heating structure 4 along the radial direction of the wind wheel 6.

[0059] The cooling and heating fan in this embodiment also includes a control device, which is electrically connected to the heating structure 4 and the driving device, and is suitable for controlling the start and stop of the heating structure 4 and the driving device to drive the air duct housing 5 or the outer shell 1 to rotate. By setting the control device, the start and stop of the heating structure 4 can be automatically controlled, and the air duct housing 5 or the outer shell 1 can be automatically driven to rotate, so as to realize the automatic control of the cooling and heating fan and automatically switch the cooling and heating modes.

[0060] There are many specific forms of the control device. In this embodiment, the control device is a control panel 10, which is arranged on the top of the housing 1 for user convenience. As a convertible implementation, the control device can also be a control button or other forms of control device. As a convertible implementation, the control device can also be arranged on the shell of the housing 1.

[0061] There are many specific forms of drive devices, such as Figure 4 As shown, the driving device in this embodiment includes: a power device, which is fixedly connected to the air duct housing 5; a first gear 12, which is connected to the output shaft 15 of the power device; a second gear 13, which is fixedly connected to the housing 1 and meshed with the first gear 12; and a guide structure 14, which is arranged on the housing 1, and the output shaft 15 is penetrated by the guide mechanism. The power device is fixedly connected to the air duct housing 5, the first gear 12 is connected to the output shaft 15 of the power device, and the power device drives the first gear 12 to rotate when it is working. The second gear 13 is fixed to the housing 1 and meshed with the first gear 12, so that the first gear 12 rotates around the axis of the second gear 13 under the meshing action of the second gear 13, thereby driving the power device and the air duct housing 5 to rotate. As a convertible embodiment, it can also be that the driving device includes a power device, a driving gear and a driven gear, the output shaft 15 of the power device is connected to the driving gear, the driving gear is connected to the driven gear, and the driven gear is connected to the air duct housing 5. When the power device is working, the driving gear is driven to rotate, and the driving gear drives the driven gear to rotate, thereby driving the air duct housing 5 to rotate.

[0062] Specifically, the power device in this embodiment is a motor 11, which is fixedly connected to the motor 11 bracket and fixedly connected to the air duct housing 5 through the motor 11 bracket. As a convertible embodiment, it is also possible that no bracket is provided, and the motor 11 is directly fixedly connected to the air duct housing 5.

[0063] like Figure 3 As shown, the guide structure 14 in this embodiment is an arc hole, the center of the arc hole is the same as the axis of the second gear 13, and the angle of the arc hole is 180°, so that the rotation of the air duct housing 5 is smoother, and the air duct housing 5 rotates 180° in the guide structure 14, that is, the direction of the air inlet 7 and the air outlet 8 is changed.

[0064] like Figure 4As shown, the cooling and heating fan in this embodiment further includes a sheath 16, which is disposed between the inner wall of the guide structure 14 and the output shaft 15. By disposing the sheath 16 between the inner wall of the guide structure 14 and the output shaft 15 of the power device, the output shaft 15 of the power device can be protected from wear when the power device moves along the guide structure 14, thereby extending the service life. As a convertible embodiment, the sheath 16 may also be not disposed.

[0065] like Figure 3 As shown, the cooling and heating fan in this embodiment further includes an air duct bracket 17, which is fixedly connected to the housing 1, and a driving device is provided on the air duct bracket 17. The air duct bracket 17 is provided at the end of the air duct housing 5, and a guide structure 14 and a second gear 13 are provided on the air duct bracket 17. By arranging the air duct bracket 17 at the end of the air duct housing 5, the interference with the air flow inside the air duct housing 5 can be reduced while the driving device drives the air duct housing 5 to rotate.

[0066] In order to prevent the air duct bracket 17 from interfering with the driving motor 11 of the wind wheel 6, the air duct bracket 17 is arranged at one end of the air duct housing 5 away from the driving motor of the wind wheel 6. As a convertible embodiment, the air duct bracket 17 can also be arranged at one end of the air duct housing 5 where the driving motor is arranged, but at a position that does not interfere with the driving motor; or the air duct bracket 17 is arranged between the air duct housing 5 and the outer shell 1.

[0067] The air duct housing 5 in this embodiment is provided with a clearance hole, and the wind wheel shaft 6 of the wind wheel 6 is passed through the clearance hole. The air duct bracket 17 is arranged above the air duct housing 5, and the air duct bracket 17 is provided with a limiting structure 18, and the end of the wind wheel shaft 6 is arranged in the limiting structure 18. By providing the limiting structure 18 on the air duct bracket 17, and the wind wheel shaft 6 is arranged in the limiting structure 18, the wind wheel shaft 6 can be better limited when the wind wheel shaft 6 rotates, so as to prevent it from tipping over when rotating. Specifically, the limiting structure 18 in this embodiment is a limiting groove. As a convertible embodiment, it is also possible that the limiting structure 18 is a limiting hole.

[0068] The heating structure 4 in this embodiment is a PTC heating element. As a changeable implementation, the heating structure 4 can also be a heating wire or a heating tube or other heating structures 4.

[0069] The cooling and heating fan in this embodiment is a cooling and heating tower fan. As a convertible implementation method, it can also be that the cooling and heating fan is an electric heating fan or a cooling fan or an air conditioning fan with cooling and heating functions.

[0070] The direction facing the user is the front, and the direction facing away from the user is the back. The working modes of the cooling and heating tower fans are described as follows:

[0071] like Figure 2As shown, when the cooling and heating tower fan is in the warm air mode, a PTC heater is provided at the first air outlet 2 on the front shell, and the first air outlet 2 is arranged opposite to the air outlet 8 of the air duct shell 5, and the second air outlet 3 on the rear shell is arranged opposite to the air inlet 7 of the air duct shell 5 (i.e., the wind enters from the back and exits from the front). The user can control the opening of the PTC heater through the control panel 10, so that the wind entering from the second air outlet 3 is discharged from the air outlet 8 under the action of the wind wheel 6, and is heated by the opened heater and then sent to the user through the first air outlet 2.

[0072] like Figure 1 As shown, when the cooling and heating tower fan is in the cold air mode, the user controls the closing of the PTC heating element through the control panel 10, and controls the motor 11 of the driving device to drive the first gear 12 to rotate. The first gear 12 drives the power device and the air duct housing 5 to rotate around the axis of the second gear 13 under the meshing action of the second gear 13, so that the air duct housing 5 rotates 180° along the guide arc hole, so that the first air outlet 2 provided with the PTC heating element on the front shell is arranged opposite to the air inlet 7 of the air duct housing 5, and the second air outlet 3 on the rear shell is arranged opposite to the air outlet 8 of the air duct housing 5. (i.e., wind goes from the front to the back). Since the user faces the front shell of the cooling and heating tower fan, in order to make the wind go in from the back and out from the front, the shaking mechanism of the cooling and heating tower fan can be controlled to make the front shell and the air duct structure rotate 180° as a whole, so that the wind entering from the first air outlet 2 is discharged from the air outlet 8 under the action of the wind wheel 6, and cold air is delivered to the user from the second air outlet 3. Although the heating element does not work in the cold air mode, since the length of the air inlet 7 is set to be greater than the length of the heating structure 4, the incoming air can be less blocked by the heating structure 4, and the air can be input to a greater extent, meeting the air intake requirement.

[0073] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A cooling and heating fan, characterized in that: include: The housing (1) is provided with a first air outlet (2) and a second air outlet (3); A heating structure (4) is arranged corresponding to the first air outlet (2); An air duct structure, comprising an air duct housing (5) and a wind wheel (6) arranged in the air duct housing (5), wherein the air duct housing (5) is provided with an air inlet (7) and an air outlet (8); A driving device drives the air duct housing (5) or the outer shell (1) to rotate, so that there is a first state between the air duct housing (5) and the outer shell (1) in which the air inlet (7) corresponds to the first air outlet (2) and the air outlet (8) corresponds to the second air outlet (3), and a second state in which the air inlet (7) corresponds to the second air outlet (3) and the air outlet (8) corresponds to the first air outlet (2), so that the cooling and heating fan has a cooling air mode or a heating air mode in the first state, and has a heating air mode or a cooling air mode in the second state.

2. The cooling and heating fan according to claim 1, characterized in that: The angle between the air inlet (7) and the air outlet (8) is equal to the angle between the first air outlet (2) and the second air outlet (3).

3. The cooling and heating fan according to claim 2, characterized in that: The air inlet (7) and the air outlet (8) are arranged opposite to each other, and the first air outlet (2) and the second air outlet (3) are arranged opposite to each other.

4. The cooling and heating fan according to claim 1, characterized in that: The maximum length of the air inlet (7) in the radial direction of the wind wheel (6) is greater than the maximum length of the heating structure (4) in the radial direction of the wind wheel (6).

5. The cooling and heating fan according to claim 1, characterized in that: The maximum length of the air outlet (8) in the radial direction of the wind wheel (6) is no greater than the maximum length of the heating structure (4) in the radial direction of the wind wheel (6).

6. The cooling and heating fan according to claim 1, characterized in that: It also includes a control device, which is electrically connected to the heating structure (4) and the driving device, and is suitable for controlling the start and stop of the heating structure (4) and the driving device to drive the air duct housing (5) or the outer shell (1) to rotate.

7. The cooling and heating fan according to claim 1, characterized in that: The heating structure (4) is arranged at the first air outlet (2).

8. The cooling and heating fan according to claim 1, characterized in that: The driving device is fixedly connected to the outer shell (1), and drives the air duct housing (5) to rotate.

9. The cooling and heating fan according to claim 8, characterized in that: The heating structure (4) is fixedly connected to the housing (1).

10. The cooling and heating fan according to any one of claims 1 to 9, characterized in that: The driving device comprises: A power device, fixedly connected to the air duct housing (5); A first gear (12) connected to an output shaft (15) of the power device; A second gear (13) fixedly connected to the housing (1) and meshingly connected to the first gear (12); The guide structure (14) is arranged on the housing (1), and the output shaft (15) is passed through the guide structure (14).

11. The cooling and heating fan according to claim 10, characterized in that: The guide structure (14) is an arc-shaped hole.

12. The cooling and heating fan according to claim 10, characterized in that: It also includes a protective sleeve (16) disposed between the inner wall of the guide structure (14) and the output shaft (15).

13. The cooling and heating fan according to any one of claims 1 to 9, characterized in that: It also comprises an air duct support (17) fixedly connected to the housing (1), and the drive device is provided on the air duct support (17).

14. The cooling and heating fan according to claim 13, characterized in that: The air duct support (17) is arranged at the end of the air duct housing (5).

15. The cooling and heating fan according to claim 13, characterized in that: A limiting structure (18) is provided on the air duct support (17), and a wind wheel shaft (9) of the wind wheel (6) is provided in the limiting structure (18).

16. The cooling and heating fan according to any one of claims 1 to 9, characterized in that: The cooling and heating fan is a cooling and heating tower fan.

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