Fan

Abstract

The utility model provides a fan which comprises a shell, a cold air fan, a hot air fan and a heating piece, the shell is provided with an air inlet duct, a cold air outlet duct and a hot air outlet duct, and the air inlet duct is communicated with the cold air outlet duct and the hot air outlet duct; the cold air fan is mounted in the air inlet duct; the hot air fan and the heating piece are both installed on the hot air duct. The fan is selectively in a cold air mode or a hot air mode, and when the fan is in the cold air mode, the cold air fan drives air to flow in from the air inlet duct and flow out from the cold air outlet duct; when the fan is in a hot air mode, the hot air fan drives air to flow to the heating piece from the air inlet duct and flow out from the hot air outlet duct. Therefore, compared with a fan in the related technology, the fan has the cold air mode or the hot air mode, so that the fan can play a role in different seasons and environments, the use flexibility of the fan is improved, the application range of the fan is widened, and a user can select a proper mode according to actual needs.

Description

Technical Field

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

[0002] A fan can drive air to flow. However, fans in related art can only blow cold air, which makes the function of the fan relatively simple and difficult to meet the needs of users. Utility Model Content

[0003] The embodiment of the present invention provides a fan to improve at least one of the above problems.

[0004] The embodiments of the present invention achieve the above-mentioned objectives through the following technical solutions.

[0005] An embodiment of the present utility model provides a fan, which includes a shell, a cold air blower, a hot air blower and a heating element. The shell is provided with an air inlet duct, a cold air outlet duct and a hot air outlet duct, the air inlet duct is connected to the cold air outlet duct and the hot air outlet duct; the cold air blower is installed in the air inlet duct; the hot air blower and the heating element are both installed in the hot air duct; the fan can selectively be in cold air mode or hot air mode. When the fan is in cold air mode, the cold air blower drives air to flow into the air inlet duct and flow out of the cold air outlet duct; when the fan is in hot air mode, the hot air blower drives air to flow from the air inlet duct to the heating element and flow out of the hot air outlet duct.

[0006] In some embodiments, the cold air outlet duct is arranged around the hot air outlet duct, the cold air outlet duct has a cold air outlet, the hot air outlet duct has a hot air outlet, the cold air outlet and the hot air outlet are located on the same side of the shell, and the cold air outlet is arranged around the hot air outlet.

[0007] In some embodiments, the cooling air blower is a backward-inclined centrifugal blower.

[0008] In some embodiments, the cold air outlet duct includes multiple sub-ducts, which are arranged in sequence along the circumference of the hot air outlet duct. Each sub-duct extends along the length direction of the hot air outlet duct. Two adjacent sub-ducts are independently arranged from each other, and at least two sub-ducts have unequal cross-sectional areas.

[0009] In some embodiments, the air inlet duct has an air inlet, and the air inlet and the hot air outlet are located on opposite sides of the shell; the cold air blower, the hot air blower and the heating element are arranged in sequence from the air inlet to the hot air outlet.

[0010] In some embodiments, the fan further includes an indicator light, which is exposed outside the shell, surrounds the hot air outlet and is located between the cold air outlet and the hot air outlet; when the fan is in cold air mode, the indicator light sends a first indication signal; when the fan is in hot air mode, the indicator light sends a second indication signal.

[0011] In some embodiments, the housing includes a main shell and a rear net, the main shell is formed with an air inlet duct, a cold air outlet duct and a hot air outlet duct, and the rear net is detachably located at the air inlet of the air inlet duct.

[0012] In some embodiments, the fan further includes a filter, which is located in the air inlet duct and between the cooling air blower and the rear screen.

[0013] In some embodiments, the fan further includes a bracket, and the bracket is located below the housing.

[0014] In some embodiments, the housing further includes a touch panel, which is located on the top of the housing and electrically connected to the cold air blower, the hot air blower, and the heating element.

[0015] In the fan provided by the embodiment of the present invention, the fan includes a housing, a cold air blower, a hot air blower and a heating element. The housing is provided with an air inlet duct, a cold air outlet duct and a hot air outlet duct. The air inlet duct is connected to the cold air outlet duct and the hot air outlet duct. The cold air blower is installed in the air inlet duct. The hot air blower and the heating element are both installed in the hot air duct. The fan can be selectively in a cold air mode or a hot air mode. When the fan is in the cold air mode, the cold air blower drives air to flow into the air inlet duct and out of the cold air outlet duct. When the fan is in the hot air mode, the hot air blower drives air to flow from the air inlet duct to the heating element and out of the hot air outlet duct. In this way, compared with the fans in the related art, the fan of the present application has a cold air mode or a hot air mode, so that the fan can function in different seasons and environments, increasing its flexibility and scope of application. Users can choose the appropriate mode according to actual needs to meet the comfort requirements under different climatic conditions. In addition, the fans share the same air inlet duct in both cold air mode and hot air mode, which can simplify the design of the fan's internal structure while ensuring that external air can be effectively inhaled regardless of whether it is in cold air mode or hot air mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the implementation. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1A schematic structural diagram of a fan provided in an embodiment of the present utility model is shown.

[0018] Figure 2 Shown Figure 1 Schematic cross-sectional view of part of the structure of the fan.

[0019] Figure 3 Shown Figure 1 A schematic cross-sectional view of part of the fan structure at another cutting position.

[0020] Figure 4 Shown Figure 1 Schematic diagram of the exploded structure of part of the fan.

[0021] Description of Figure Numbers:

[0022] Fan 10, housing 100, air inlet duct 101, cold air outlet duct 102, hot air outlet duct 103, cold air outlet 104, hot air outlet 105, air inlet 106, sub-duct 107, main housing 110, rear grille 120, cold air blower 200, hot air blower 300, heating element 400, indicator light 500, bracket 700, touch panel 800. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of the utility model.

[0024] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the utility model.

[0025] See also Figures 1 to 4, an embodiment of the present invention proposes a fan 10, which includes a shell 100, a cold air blower 200, a hot air blower 300 and a heating element 400. The shell 100 is provided with an air inlet duct 101, a cold air outlet duct 102 and a hot air outlet duct 103. The air inlet duct 101 is connected to the cold air outlet duct 102 and the hot air outlet duct 103; the cold air blower 200 is installed in the air inlet duct 101; the hot air blower 300 and the heating element 400 are both installed in the hot air duct; wherein, the fan 10 can be selectively in a cold air mode or a hot air mode. When the fan 10 is in the cold air mode, the cold air blower 200 drives air to flow into the air inlet duct 101 and out of the cold air outlet duct 102; when the fan 10 is in the hot air mode, the hot air blower 300 drives air to flow from the air inlet duct 101 to the heating element 400 and out of the hot air outlet duct 103. In this way, compared with the fans in the related art, the fan 10 of the present application has a cold air mode or a hot air mode, so that the fan 10 can function in different seasons and environments, increasing its flexibility and scope of application. Users can choose the appropriate mode according to actual needs to meet the comfort requirements under different climatic conditions.

[0026] In addition, the fan 10 shares the same air inlet duct 101 in both cold air mode and hot air mode, which can simplify the design of the internal structure of the fan 10 while ensuring that external air can be effectively inhaled in both cold air mode and hot air mode.

[0027] In the cold air mode, the cold air blower 200 is started, and air is sucked in through the air inlet duct 101 and directly discharged through the cold air outlet duct 102. It is mainly used in summer or in occasions where cooling is required.

[0028] In the hot air mode, the hot air blower 300 is started, and air is also sucked in through the air inlet duct 101, but then heated by the heating element 400 and then discharged from the hot air outlet duct 103. This method is suitable for winter or when heating is needed.

[0029] In some embodiments, the cold air outlet duct 102 is disposed around the hot air outlet duct 103. The cold air outlet duct 102 has a cold air outlet 104, and the hot air outlet duct 103 has a hot air outlet 105. The cold air outlet 104 and the hot air outlet 105 are located on the same side of the housing 100, and the cold air outlet 104 is disposed around the hot air outlet 105. In this way, since the cold air outlet 104 and the hot air outlet 105 are both located on the same side of the housing 100, and the cold air outlet 104 is disposed around the hot air outlet 105, this layout ensures that the airflow can be discharged from the same side in both the cold air mode and the hot air mode, without having to change the position of the fan 10 when switching the mode of the fan 10.

[0030] In addition, integrating the cold air outlet 104 and the hot air outlet 105 on the same side can make the appearance of the fan 10 more simple and unified, thereby improving the overall aesthetics of the product.

[0031] In some embodiments, the cooling fan 200 is a backward-inclined centrifugal fan. A backward-inclined centrifugal fan is characterized by its backward-inclined blades, which enable it to generate high airflow at high static pressures. When the fan 10 is in cooling mode, the cooling fan 200 operates, drawing air into the center of the cooling fan 200. The blades of the cooling fan 200 then throw the air outward into the cooling air outlet duct 102, eliminating the need for the air to pass through the heating element in the hot air outlet duct 103. This helps reduce noise.

[0032] In some embodiments, the cold air outlet duct 102 includes a plurality of sub-air ducts 107, and the plurality of sub-air ducts 107 are arranged in sequence along the circumference of the hot air outlet duct 103, and each sub-air duct 107 extends along the length direction of the hot air outlet duct 103. The two adjacent sub-air ducts 107 are independently arranged, and the cross-sectional areas of at least two sub-air ducts 107 are unequal. In this way, by providing sub-air ducts 107 with different cross-sectional areas, airflows of different intensities can be generated. The sub-air duct 107 with a smaller cross-sectional area can generate a strong airflow (strong wind), which is suitable for occasions that require rapid cooling or strong ventilation. The sub-air duct 107 with a larger cross-sectional area produces a softer airflow (soft wind), which is suitable for use in situations where a gentle and comfortable airflow is required.

[0033] In some embodiments, the air inlet duct 101 has an air inlet 106 , which is located on opposite sides of the housing 100 from the hot air outlet 105 . The cooling air blower 200 , the hot air blower 300 , and the heating element are arranged sequentially from the air inlet 106 toward the hot air outlet 105 . The heating element 400 is a PTC heater 400 , and the hot air blower 300 is an axial flow fan. This design, arranging the components sequentially according to the direction of air flow, makes the internal structure of the fan 10 more compact and effectively utilizes space.

[0034] In addition, this layout reduces unnecessary pipe length, simplifies the internal structure, and makes the entire fan 10 more concise and efficient.

[0035] Furthermore, since the heating element 400 is located after the hot air blower 300, it ensures that the air is fully mixed and pre-treated before being heated, thereby providing a more uniform and stable hot air output. In hot air mode, the air is first accelerated by the hot air blower 300 and then heated by the heating element 400. This sequence can better control the output air temperature and avoid problems such as local overheating or uneven heating.

[0036] In some embodiments, the fan 10 further includes an indicator light 500, which is exposed outside the shell 100, surrounds the hot air outlet 105 and is located between the cold air outlet 104 and the hot air outlet; when the fan 10 is in the cold air mode, the indicator light 500 sends a first indication signal; when the fan 10 is in the hot air mode, the indicator light 500 sends a second indication signal.

[0037] Thus, the design of the indicator light 500 provides an intuitive way for the user to understand the current operating mode of the fan 10. The user can quickly identify whether the fan 10 is in the cold air mode or the hot air mode by observing the color or blinking pattern of the indicator light 500 without having to get close to the fan 10 or look at a complicated control panel.

[0038] Furthermore, in hot air mode, the indicator light 500 emits a specific second indicator signal (e.g., a red light) to remind the user that the fan 10 is heating, thereby preventing accidental contact and burns. Similarly, in cold air mode, the first indicator signal (e.g., a blue light) helps the user confirm that the fan 10 is providing cooling airflow, not heating.

[0039] Moreover, the design of the indicator light 500 surrounding the hot air outlet 105 not only provides practical functions, but also serves as a decorative element to enhance the overall appearance of the fan 10. Appropriate light color and brightness can increase the modern and technological sense of the fan 10, making it a highlight of the indoor environment.

[0040] In some embodiments, the housing 100 includes a main shell 110 and a rear screen 120. The main shell 110 defines an air inlet duct 101, a cold air outlet duct 102, and a hot air outlet duct 103. The rear screen 120 is removably positioned at the air inlet 106 of the air inlet duct 101. The rear screen 120 can be connected to the main shell 110 via a snap-fit ​​or screw connection. The removable design of the rear screen 120 allows the user to easily remove it for cleaning. This helps remove dust, hair, and other impurities accumulated on the screen, keeping the air inlet duct 101 unobstructed.

[0041] In addition, since the rear mesh 120 is detachable, users or maintenance personnel can more conveniently enter the interior of the fan 10 to inspect and maintain key components such as the blower and the heating element 400.

[0042] Moreover, the rear net 120 can prevent large particles (such as fingers, toys, etc.) from entering the interior of the fan 10, protecting the internal mechanical structure from damage.

[0043] In some embodiments, the fan 10 further includes a filter (not shown), which is located in the air inlet duct 101 and between the cooling fan 200 and the rear screen 120. Thus, the filter can prevent larger particles from entering the fan 10 and preventing them from adhering to key components such as the cooling fan 200, the hot air fan 300, and the heater 400.

[0044] In addition, since the filter is located in the air inlet duct 101 and close to the rear net 120, the user can easily remove the rear net 120 to clean or replace the filter.

[0045] In some embodiments, the fan 10 further includes a bracket 700, which is located below the housing 100. This provides a certain height for the bracket 700, which can elevate the fan 10 to a more suitable position, allowing the airflow to better cover the entire room. By raising the height of the fan 10, the impact of floor obstacles on the airflow can be reduced, improving air circulation efficiency.

[0046] In addition, the bracket 700 provides a stable base for the fan 10, ensuring that the fan 10 will not easily fall over or move during use.

[0047] In some embodiments, the housing 100 further includes a touch panel 800, which is located at the top of the housing 100. The touch panel 800 is electrically connected to the cold air blower 200, the hot air blower 300 and the heating element so that the user can control the cold air blower 200, the hot air blower 300 and the heating element.

[0048] The user can use the touch panel 800 to select whether the fan 10 is in hot air mode or cold air mode. The touch panel 800 can not only be used for control, but also display the current operating mode, temperature setting, wind speed, and other related information. The touch panel 800 can also integrate more intelligent functions, such as timer switching, temperature setting, sleep mode, etc.

[0049] In utility models, unless otherwise expressly specified or limited, terms such as "mounted" and "connected" should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integral connections; mechanical connections; direct connections, indirect connections through an intermediary, internal communication between two components, surface contact only, or surface contact through an intermediary. Those skilled in the art will understand the specific meanings of these terms in utility models based on the specific circumstances.

[0050] In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as a specific reference or special structure. The description of the term "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the utility model, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the utility model and the features of different embodiments or examples, unless they are contradictory.

[0051] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model, and should all be included in the scope of protection of the utility model.

Claims

1. A fan, characterized in that: include: A housing, wherein the housing is provided with an air inlet duct, a cold air outlet duct, and a hot air outlet duct, wherein the air inlet duct is connected to the cold air outlet duct and the hot air outlet duct; A cold air blower installed in the air inlet duct; as well as A hot air blower and a heating element, both of which are installed in the hot air duct; In which, the fan can be selectively in cold air mode or hot air mode. When the fan is in the cold air mode, the cold air blower drives air to flow into the air inlet duct and out of the cold air outlet duct; when the fan is in the hot air mode, the hot air blower drives air to flow from the air inlet duct to the heating element and out of the hot air outlet duct.

2. The fan according to claim 1, wherein The cold air outlet duct is arranged around the hot air outlet duct, the cold air outlet duct has a cold air outlet, the hot air outlet duct has a hot air outlet, the cold air outlet and the hot air outlet are located on the same side of the shell, and the cold air outlet is arranged around the hot air outlet.

3. The fan according to claim 2, characterized in that The cooling air fan is a backward-inclined centrifugal fan.

4. The fan according to claim 2, wherein The cold air outlet duct includes multiple sub-ducts, which are arranged in sequence along the circumference of the hot air outlet duct. Each sub-duct extends along the length direction of the hot air outlet duct. Two adjacent sub-ducts are independently arranged from each other, and at least two sub-ducts have unequal cross-sectional areas.

5. The fan according to claim 2, characterized in that The air inlet duct has an air inlet, and the air inlet and the hot air outlet are located on opposite sides of the shell; the cold air blower, the hot air blower and the heating element are arranged in sequence from the air inlet to the hot air outlet.

6. The fan according to claim 2, characterized in that The fan also includes an indicator light, which is exposed outside the shell, surrounds the hot air outlet and is located between the cold air outlet and the hot air outlet; when the fan is in the cold air mode, the indicator light sends a first indication signal; when the fan is in the hot air mode, the indicator light sends a second indication signal.

7. The fan according to claim 1, wherein The shell includes a main shell and a rear net, the main shell is formed with the air inlet duct, the cold air outlet duct and the hot air outlet duct, and the rear net is detachably located at the air inlet of the air inlet duct.

8. The fan according to claim 7, characterized in that The fan further includes a filter screen, which is located in the air inlet duct and between the cold air blower and the rear screen.

9. The fan according to claim 1, wherein The fan further includes a bracket, and the bracket is located below the housing.

10. The fan according to claim 1, wherein The housing further includes a touch panel, which is located on the top of the housing and is electrically connected to the cold air blower, the hot air blower and the heating element.

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