Warmer

Abstract

The utility model discloses a kind of heaters, and heater includes: shell, shell is equipped with air duct space, air duct space is equipped with air inlet and air outlet;Fan wheel component, fan wheel component is located in air duct space and between air inlet and air outlet;Heating assembly, heating assembly includes multiple heating sheet, heating assembly has the first position and the second position of switchable, in the first position heating assembly is located in air duct space and adjacent air outlet, multiple heating sheet is arranged along first direction to make that between adjacent two heating sheet wind guide channel is defined, wind guide channel extends in the direction towards air outlet, when in the first position, the width of at least one wind guide channel in first direction is different from when in the second position.The heater proposed by the utility model, heating assembly has the first position and the second position of switchable, heating assembly is located in the first position, ensure the heating effect of fan heater;When heating assembly is located in the second position, improve the cooling effect of fan heater.

Description

Technical Field

[0001] This utility model relates to the field of heating, and in particular to a heater. Background Technology

[0002] In related technologies, heaters include a fan and a heating element. In winter, when a user uses a heater, both the fan and the heating element operate. The fan drives air through the heating element, and the heated air is blown into the room to raise the room temperature. To improve the practicality of the heater, the heating element is designed to be turned off independently, allowing users to use the fan alone for cooling in summer. However, the heating element results in greater air resistance, leading to a less effective cooling effect from the fan. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a heater with a heating component having a switchable first position and a second position. When the heating component is in the first position, the heating effect of the heater is guaranteed; when the heating component is in the second position, the cooling effect of the heater is improved.

[0004] A heater according to an embodiment of the present invention includes: a housing having an air duct space having an air inlet and an air outlet; a fan assembly having a fan wheel assembly disposed within the air duct space and located between the air inlet and the air outlet; and a heating assembly having a plurality of heating elements, at least some of which are movably disposed on the housing to allow the heating assembly to have a switchable first position and a second position. In the first position, the heating assembly is located within the air duct space and adjacent to the air outlet. The plurality of heating elements are arranged along a first direction to define an air guide channel between adjacent heating elements. The air guide channel extends in a direction from the fan wheel assembly toward the air outlet. In the first position, the width of at least one air guide channel in the first direction is different from that in the second position.

[0005] According to the present invention, the width of at least a portion of the air guide channel in the heating component can be adjusted, thereby adjusting the heating effect of the heating component on the air and the air resistance, which is beneficial to improving the heating effect of the heater and also beneficial to improving the air output effect of the heater.

[0006] A heater according to an embodiment of the present invention includes: a housing having an air duct space having an air inlet and an air outlet, the inner peripheral wall of the air duct space having a recessed clearance space; a fan assembly having a fan assembly disposed within the air duct space and located between the air inlet and the air outlet; and a heating assembly having a heating assembly movably disposed within the housing to switch between a first position and a second position, wherein in the first position the heating assembly is located within the air duct space and adjacent to the air outlet, and in the second position at least a portion of the heating assembly is housed within the clearance space to avoid airflow, and the heating assembly includes a plurality of heating elements.

[0007] According to the present invention, the heater has a switchable first position and a second position. When the heater is heating, the heating component is located in the first position to ensure the heating effect of the heater. When the heater only needs to blow air, the heating component is located in the second position to avoid airflow, reduce wind resistance, increase the air volume of the heater, and improve the cooling effect when the heater only uses the impeller assembly.

[0008] In some embodiments, the housing is provided with a slide, and at least a portion of the heating element is located within the slide to be movable relative to the housing.

[0009] In some embodiments, the heating assembly further includes a connecting component, wherein two adjacent heating elements are connected by the connecting component, the connecting component having a switchable first state and a second state, wherein the distance between two adjacent heating elements in the first state is greater than that in the second state, the connecting component is in the second state in the second position, and the connecting component is in the first state in the first position.

[0010] In some embodiments, the connecting assembly includes an intersecting and rotatably connected first connecting rod and second connecting rod, the two ends of the first connecting rod being connected to two adjacent heating elements respectively, and the two ends of the second connecting rod being connected to two adjacent heating elements respectively, each heating element being rotatably connected to one of the first connecting rod and the second connecting rod and slidably connected to the other; or, the connecting assembly includes a first connector and a second connector, one of the two adjacent heating elements being rotatably connected to the first connector and the other being rotatably connected to the second connector, the end of the first connector away from the heating element being rotatably connected to the end of the second connector away from the heating element.

[0011] In some embodiments, at least one of the heating elements is connected to a lever, a portion of which extends to the outside of the housing, and the lever is moved to drive the plurality of the connection components to switch between the first state and the second state.

[0012] In some embodiments, the lever is plugged into the corresponding heating element.

[0013] In some embodiments, the heater is configured to have a warm air state and a cold air state, wherein in the warm air state the heating element is located in the first position and both the fan assembly and the heating element are operational, and in the cold air state the heating element is located in the second position, the fan assembly is operational, and the heating element is not operational.

[0014] In some embodiments, each heating element includes two electrode plates and at least one PTC element, the two electrode plates are spaced apart along a first direction, each PTC element is disposed between the two electrode plates, and each PTC element is electrically connected to the two electrode plates respectively.

[0015] In some embodiments, the heating assembly is configured such that the polarity of the electrode plates between two adjacent heating elements is the same; and / or, in each heating element, the sum of the contact areas of all the PTC elements with the two electrode plates is S1, the contact area of ​​the two electrode plates with air is S2, and the heating element satisfies: S1 / S2≤0.18.

[0016] In some embodiments, when the heating component is located in the first position, the area of ​​the air duct space used to accommodate the heating component is a first region, each heating element extends along a second direction, and on the same cross section perpendicular to the second direction, the projected area of ​​each heating element is S3, the windward area S_total of the heating component is N*S3, where N is the number of heating elements; the projected area of ​​the inner peripheral wall of the first region is S4, wherein the heater satisfies: S_total / S4≤0.2.

[0017] In some embodiments, when the heating component is located at the first position, the area of ​​the air duct space used to accommodate the heating component is a first region. The first region is formed with multiple wind speed zones at intervals in the first direction, and the airflow velocity in different wind speed zones is different. The multiple wind speed zones include at least a first wind speed zone and a second wind speed zone. The airflow velocity in the first wind speed zone is greater than the airflow velocity in the second wind speed zone. When the heating component is located at the first position, the heat generated by the heating element in the first wind speed zone is greater than the heat generated by the heating element in the second wind speed zone.

[0018] In some embodiments, the plurality of heating elements includes at least a first heating element and a second heating element, wherein the first heating element is disposed in the first wind speed zone, and the second heating element is disposed in the second wind speed zone; wherein

[0019] The first heating element and the second heating element are of different sizes, and the heat output of the first heating element is greater than that of the second heating element; and / or

[0020] The first heating element and the second heating element have different heating powers, and the heat output of the first heating element is greater than that of the second heating element; and / or

[0021] Among the plurality of heating elements, at least one pair of adjacent heating elements has a spacing different from the spacing of other adjacent heating elements, and the spacing of the heating elements in the wind speed zone with high airflow velocity is smaller than the spacing of the heating elements in the wind speed zone with low airflow velocity.

[0022] In some embodiments, the inner peripheral wall of the air duct space is provided with a recessed clearance space, and at least a portion of the heating component is housed within the clearance space in the second position to avoid airflow.

[0023] In some embodiments, the housing is provided with a first air duct assembly and a second air duct assembly connected together, the first air duct assembly and the second air duct assembly defining the air duct space, the impeller assembly being located within the first air duct assembly, the heating assembly being located within the second air duct assembly, and a portion of the sidewall of the second air duct assembly protruding outward to form the clearance space inside the second air duct assembly.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0026] Figure 1 This is a schematic diagram of a heater according to an embodiment of the present utility model;

[0027] Figure 2 This is an exploded view of a heater according to an embodiment of the present utility model;

[0028] Figure 3 This is a cross-sectional view of a heater in a first position according to an embodiment of the present invention;

[0029] Figure 4 This is a cross-sectional view of a heater in a second position according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the side of the second air duct assembly facing the first air duct assembly;

[0031] Figure 6 This is a schematic diagram of the heating assembly;

[0032] Figure 7 This is a schematic diagram of a connection component according to some embodiments of the present invention;

[0033] Figure 8 This is a schematic diagram of the heating element;

[0034] Figure 9 This is a magnified view of part of the heating element;

[0035] Figure 10 This is a cross-sectional view of a heater in a first position, according to some other embodiments of the present invention;

[0036] Figure 11 This is a schematic diagram of the lever;

[0037] Figure 12 This is an exploded view of the heating element;

[0038] Figure 13 It is a schematic diagram of the projection of the heating component and the first region on a cross section perpendicular to the second direction;

[0039] Figure 14 This is a schematic diagram of S3 and S4;

[0040] Figure 15 This is data relating S1, S2, S1 / S2 and the heating performance of the heater;

[0041] Figure 16 yes Figure 15 A graph of the data;

[0042] Figure 17 This is data relating S4, S_total, S_total / S4, and the heating performance of the heater;

[0043] Figure 18 yes Figure 17 A graph of the data.

[0044] Reference numerals: 100, Heater; 1, Shell; 11, Air duct space; 111, Air inlet; 112, Air outlet; 113, First area; 12, Clearance space; 13, Front shell; 14, Rear shell; 141, Air inlet grille; 15, First air duct assembly; 16, Second air duct assembly; 161, Air outlet grille; 17, Slide rail; 171, First slide rail; 172, Second slide rail; 173, Third slide rail; 174, Limiting component; 2, Fan wheel assembly; 3, Heating assembly; 31, Heating element; 311, First sliding buckle; 312, Second sliding buckle; 313, Electrode plate; 314, PTC element; 32, Connecting assembly; 321, First connecting rod; 322, Second connecting rod; 323, Rotating rod; 33, Toggle lever; 301, First heating element; 302, Second heating element. Detailed Implementation

[0045] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0046] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] The following is for reference. Figures 1-18A heater 100 according to an embodiment of the present utility model is described.

[0049] Reference Figure 1 , Figure 2 and Figure 3 The heater 100 according to an embodiment of the present invention includes: a housing 1, a fan assembly 2, and a heating assembly 3; wherein, the housing 1 is provided with an air duct space 11, the air duct space 11 is provided with an air inlet 111 and an air outlet 112, and the fan assembly 2 is disposed within the air duct space 11 and located between the air inlet 111 and the air outlet 112. When the fan assembly 2 is working, the fan assembly 2 drives air to enter the air duct space 11 from the air inlet 111, and then blows it towards the user through the air outlet 112.

[0050] The heating assembly 3 includes a plurality of heating elements 31, at least some of which are movably disposed in the housing 1 to allow the heating assembly 3 to have switchable first and second positions. In the first position, the heating assembly 3 is located within the air duct space 11 and adjacent to the air outlet 112. The plurality of heating elements 31 are arranged along a first direction to define an air guide channel between adjacent heating elements 31. The air guide channel extends from the impeller assembly 2 toward the air outlet 112. In the first position, the width of at least one air guide channel in the first direction is different from that in the second position.

[0051] For example, in the first position, multiple heating elements 31 are spaced apart in the first direction so that an air guide channel for airflow can be defined between adjacent heating elements 31. The air guide channel extends from the impeller assembly 2 toward the air outlet 112 so that when the impeller assembly 2 drives the airflow, the airflow can flow through the air guide channel. After the airflow flows into the air guide channel, the airflow can exchange heat with the adjacent heating elements 31 respectively, thereby increasing the contact area between the heating element 3 and the airflow. This is beneficial to improving the heating effect of the heating element 3 on the airflow, and thus improving the heating effect of the heater 100 on the external environment.

[0052] In this embodiment of the application, the heating effect and air resistance of the heating component 3 can be adjusted by adjusting the width of at least one air guide channel in the first direction.

[0053] For example, in the first position, multiple heating elements 31 are arranged at equal intervals in the first direction, which helps to improve the uniformity of heating of the heating component 3 and improve the heating effect. In the second position, the width of each air guide channel in the first direction is zero, that is, in the second position, multiple heating elements 31 are stacked together to avoid airflow and reduce the wind resistance of the heating component 3. In the second position, one of the air guide channels may also have a relatively large width in the first direction and be directly opposite the air outlet 112, while the width of the other air guide channels in the first direction is zero. Other situations are also possible, as long as the wind resistance of the heating component 3 in the second position is less than that in the first position.

[0054] According to the embodiment of the present invention, the width of at least part of the air guide channel in the heating component 3 can be adjusted, thereby adjusting the heating effect of the heating component 3 on the air and the wind resistance, which is beneficial to improving the heating effect of the heater and also beneficial to improving the air output effect of the heater.

[0055] Reference Figure 1 , Figure 2 and Figure 3 The heater 100 according to an embodiment of the present invention includes: a housing 1, a fan assembly 2, and a heating assembly 3; wherein, the housing 1 is provided with an air duct space 11, the air duct space 11 is provided with an air inlet 111 and an air outlet 112, and the fan assembly 2 is disposed within the air duct space 11 and located between the air inlet 111 and the air outlet 112. When the fan assembly 2 is working, the fan assembly 2 drives air to enter the air duct space 11 from the air inlet 111, and then blows it towards the user through the air outlet 112.

[0056] Reference Figure 3 and Figure 4 In this embodiment of the present invention, the inner peripheral wall of the air duct space 11 is provided with a recessed clearance space 12; the heating component 3 is movably disposed in the housing 1 to switch between a first position and a second position. In the first position, the heating component 3 is located in the air duct space 11 and adjacent to the air outlet 112. In the second position, at least a portion of the heating component 3 is housed in the clearance space 12 to avoid airflow.

[0057] When the user needs to use the heater 100 for warmth, the heating element 3 is set to the first position. The fan assembly 2 and the heating element 3 operate. The fan assembly 2 drives airflow towards the heating element 3. The air heated by the heating element 3 flows into the room through the air outlet 112 to increase the room temperature. When the user only needs to use the fan assembly 2 of the heater 100, the heating element 3 is set to the second position. The fan assembly 2 drives airflow towards the air outlet 112 to blow towards the user.

[0058] When the heating component 3 is in the second position, at least a portion of the heating component 3 is housed within the clearance space 12 to avoid airflow, which reduces wind resistance and helps to increase the air volume of the heater, thereby improving the effect of the heater using only the fan assembly 2 for blowing and cooling.

[0059] It should be understood that when the heating component 3 is in the second position, a portion of the heating component 3 may be located within the clearance space 12 to reduce wind resistance. The more of the heating component 3 is located within the clearance space 12, the better the clearance effect. Preferably, when the heating component 3 is in the second position, the entire heating component 3 is located within the clearance space 12.

[0060] According to the embodiment of the present invention, the heater 100 has a switchable first position and a second position. When the heater 100 is heating, the heating component 3 is located in the first position to ensure the heating effect of the heater. When the heater only needs to blow air, the heating component 3 is located in the second position to avoid airflow, reduce wind resistance, increase the air volume of the heater, and improve the cooling effect of the heater when only the impeller assembly 2 is used.

[0061] In some embodiments, the housing 1 includes a front housing 13 and a rear housing 14 connected together, defining an installation space between the front housing 13 and the rear housing 14 for the exhaust fan assembly 2 and the heating assembly 3, wherein the front housing 13 is provided with an air outlet 112 and the rear housing 14 is provided with an air inlet 111.

[0062] By assembling and fitting the front shell 13 and the rear shell 14 to form the installation space for the impeller assembly 2 and the heating assembly 3, the difficulty of mold making and the cost can be reduced. Specifically, the front shell 13 and the rear shell 14 are connected by fasteners such as screws and bolts, which facilitates later maintenance or replacement. In other embodiments, the front shell 13 and the rear shell 14 can also be connected by a snap-fit ​​structure or other detachable methods, and this utility model does not limit this.

[0063] In some embodiments, the housing 1 further includes a first air duct assembly 15 and a second air duct assembly 16 connected to each other. The first air duct assembly 15 and the second air duct assembly 16 are located within the installation space and define an air duct space 11. The impeller assembly 2 is located within the first air duct assembly 15, and the heating assembly 3 is located within the second air duct assembly 16. A portion of the sidewall of the second air duct assembly 16 protrudes outward to form a clearance space 12 inside the second air duct assembly 16.

[0064] By assembling and cooperating the first air duct component 15 and the second air duct component 16 to form the air duct space 11, the difficulty of mold making and the cost can be reduced. Specifically, the first air duct component 15 and the second air duct component 16 can be detachably connected by a snap-fit ​​structure, which is beneficial for later maintenance or replacement. In other embodiments, the first air duct component 15 and the second air duct component 16 can also be integrally molded parts, or the first air duct component 15 and the second air duct component 16 can be fixedly connected as one piece, for example, by means of screws, glue welding, etc. This utility model does not limit this.

[0065] Reference Figure 3 and Figure 5 Furthermore, in this embodiment of the present invention, a portion of the sidewall of the second air duct assembly 16 protrudes outward to form an avoidance space 12 inside the second air duct assembly 16. The avoidance space 12 is formed in a simple manner, which further reduces the cost of the housing 1.

[0066] Reference Figure 1 and Figure 2 In some embodiments, an air outlet grille 161 is provided at the air outlet 112, and an air inlet grille 141 is provided at the air inlet 111. The air inlet grille 141 and the air outlet grille 161 help reduce the risk of dust or water and other debris entering the housing 1, thereby improving the cleanliness of the housing 1 and reducing the risk of components installed in the housing 1 (such as the fan assembly 2 and the heating assembly 3) malfunctioning due to water or dust ingress, thus ensuring the service life and safety of the heater 100.

[0067] In some specific embodiments, the air inlet grille 141 is disposed on the rear shell 14, and the air outlet grille 161 is disposed on the second air duct assembly 16. In other embodiments, the air inlet grille 141 may be disposed on the rear shell 14, and the air outlet grille 161 may be disposed on the front shell 13; this utility model does not limit this to any particular embodiment.

[0068] Reference Figure 3 and Figure 4 In some embodiments, the heating component 3 is reciprocating relative to the housing 1 to switch between a first position and a second position, in which the heating component 3 is entirely housed in the clearance space 12.

[0069] In this embodiment of the invention, the heating component 3 can reciprocate relative to the housing 1 to switch between a first position and a second position. The switching method of the heating component 3 between the first position and the second position is simple and easy for the user to operate. Furthermore, the simple movement of the heating component 3 helps to reduce the volume of the clearance space 12, thereby helping to reduce the overall size of the heater 100.

[0070] It should be understood that in other embodiments, the heating component 3 may also be rotatably disposed within the housing 1 to switch between a first position and a second position, or may switch between a first position and a second position through other means of movement. This utility model does not limit this.

[0071] Reference Figure 5 In some embodiments, the housing 1 is provided with a slide 17, and at least a portion of the heating element 31 is located within the slide 17 so as to be movable relative to the housing 1.

[0072] In this embodiment of the invention, at least a portion of the heating element 31 is located within the slide rail 17, which restricts the movement of the heating element 31, allowing it to move only within the slide rail 17, thus improving the stability of the heating assembly 3. Furthermore, the location of at least a portion of the heating element 31 within the slide rail 17 of the housing 1 enables the connection between the heating assembly 3 and the housing 1, which is beneficial for improving the assembly efficiency of the heating assembly 3.

[0073] In some embodiments, the heating component 3 extends along a third direction, and multiple slides 17 are provided, with the multiple slides 17 spaced apart in the third direction.

[0074] By setting multiple slides 17 along the length of the heating component 3, the heating component 3 cooperates with the multiple slides 17 to effectively improve the stability of the heating component 3. During the sliding process of the heating component 3, the multiple slides 17 can not only restrict the movement of the heating component 3, but also provide support for the heating component 3, reducing the possibility of the heating component 3 tilting during the sliding process and improving the stability of the heating component 3 when switching between the first position and the second position.

[0075] In some specific embodiments, in the third direction, the two ends of the second air duct assembly 16 are respectively provided with a first slide rail 171 and a second slide rail 172, and the two ends of the heating assembly 3 in the third direction are respectively located in the first slide rail 171 and the second slide rail 172, which improves the stability of the movement of the heating assembly 3.

[0076] Reference Figure 3 , Figure 4 and Figure 6 In some embodiments, the heating component 3 includes: a plurality of heating elements 31, which are spaced apart along a first direction; and a connecting component 32, which connects two adjacent heating elements 31. The connecting component 32 has a switchable first state and a second state, wherein the distance between two adjacent heating elements 31 in the first state is greater than that in the second state.

[0077] The greater the distance between two adjacent heating elements 31, the more air can pass between them. The longer the length of the heating component 3 in the first direction, the more air the heating component 3 can heat. The more evenly the heating component 3 heats the air in the air duct space 11 in the first direction, the better the heating effect of the heater 100 is improved.

[0078] The smaller the distance between two adjacent heating elements 31, the less air can pass between them. The higher the temperature of the air heated by the heating element 3, the more air is not heated by the heating element 3. This allows the airflow discharged from the air outlet 112 to be divided into multiple parts, with some parts having a higher temperature and others having a lower temperature. By adjusting the position of the heating element 3, the airflow temperature blown by the heater 100 to different areas of the room can be achieved, thus increasing the applicability of the heater 100.

[0079] In this embodiment of the utility model, two adjacent heating elements 31 are connected by a connecting component 32, so that the distance between the two adjacent heating elements 31 is adjustable, the uniformity of the air temperature blown out by the heater 100 during heating is controllable, the heater 100 can be applied to more application scenarios, and the practicality of the heater 100 is improved.

[0080] In some embodiments, in the second position, the connecting component 32 is in the second state, and in the first position, the connecting component 32 is in the first state.

[0081] When all the connecting components 32 of the heating component 3 are in the first state, the distance between two adjacent heating elements 31 is the largest, and the length of the heating component 3 in the first direction is the longest, and the heating component 3 is in the extended state; when all the connecting components 32 of the heating component 3 are in the second state, the distance between two adjacent heating elements 31 is the smallest, and the length of the heating component 3 in the first direction is the shortest, and the heating component 3 is in the contracted state.

[0082] In this embodiment of the invention, when the heating component 3 is in the second position, at least a portion of the heating component 3 is located within the clearance space 12 to avoid airflow. At this time, the heating component 3 is in a contracted state, which is beneficial for improving the effect of avoiding airflow and also for reducing the volume of the clearance space 12, thereby reducing the overall volume of the heater 100. When the heating component 3 is in the first position, the heating component 3 is located within the air duct space 11 to heat the air. At this time, the heating component 3 is in an extended state, and in the first direction, the heating component 3 heats the air within the air duct space 11 more evenly, which is beneficial for improving the heating effect of the heater 100.

[0083] In other embodiments, when the heating component 3 is in the first position, the connecting component 32 can also switch between the first state and the second state so that the uniformity of the air temperature blown out by the heater 100 during heating can be controlled, making the heater 100 applicable to more application scenarios and improving the practicality of the heater 100.

[0084] In other embodiments, when the heating component 3 is in the first position, the connecting component 32 can also switch between the first state and the second state. When the heating component 3 is in the first position and the connecting component 32 is in the first state, the heating component 3 can also slide within the slide rail 17 to adjust the direction of the high-temperature airflow blown out by the heater 100, further improving the practicality of the heater 100.

[0085] Reference Figure 6-9 In some embodiments, the connecting assembly 32 includes an intersecting and rotatably connected first connecting rod 321 and second connecting rod 322. The two ends of the first connecting rod 321 are respectively connected to two adjacent heating elements 31, and the two ends of the second connecting rod 322 are respectively connected to two adjacent heating elements 31. Each heating element 31 is rotatably connected to one of the first connecting rod 321 and the second connecting rod 322 and slidably connected to the other.

[0086] For example, the upper end of the first connecting rod 321 is rotatably connected to a heating element 31, and the upper end of the second connecting rod 322 is rotatably connected to another heating element 31. Alternatively, the lower end of the first connecting rod 321 is rotatably connected to a heating element 31, and the lower end of the second connecting rod 322 is rotatably connected to another heating element 31.

[0087] In this embodiment of the invention, the first connecting rod 321 and the second connecting rod 322 are formed into a scissor structure, thereby allowing the spacing between two adjacent heating elements 31 to be adjusted. Furthermore, this scissor structure has high stability, improving the reliability of the connection between multiple heating elements 31. The scissor structure is simple in structure, reducing the cost of the connecting component 32 and thus reducing the cost of the heater 100.

[0088] In some specific embodiments, both ends of the first connecting rod 321 are provided with rotating rods 323, and both ends of the second connecting rod 322 are also provided with rotating rods 323. That is to say, the first connecting rod 321 and the second connecting rod 322 have the same structure, which reduces the mold opening cost and further reduces the cost of the connecting component 32.

[0089] The heating element 31 is provided with a first sliding buckle 311 and a second sliding buckle 312. The second sliding buckle 312 extends in a third direction. The rotating rod 323 at one end of the first connecting rod 321 is located in the first sliding buckle 311 to be rotatably connected with the heating element 31. The rotating rod 323 at one end of the second connecting rod 322 is located in the second sliding buckle 312 and can slide in the second sliding buckle 312 in a third direction to realize the sliding connection between the second connecting rod 322 and the heating element 31.

[0090] In this embodiment of the utility model, the connection method between the heating element 31 and the connecting component 32 is simple, which is conducive to improving the assembly efficiency of the heating component 3 and reducing the cost of the heating component 3.

[0091] Reference Figure 10 In other embodiments, the connecting component 32 includes a first connector and a second connector, one of two adjacent heating elements 31 is rotatably connected to the first connector and the other is rotatably connected to the second connector, and the end of the first connector away from the heating element 31 is rotatably connected to the end of the second connector away from the heating element 31.

[0092] The structure of the connecting component 32 in this embodiment is similar to that of a hinge structure. The structure of the connecting component 32 is simpler, which further reduces the cost of the connecting component 32.

[0093] In other embodiments, the connecting component 32 can also have other structures, as long as the spacing between two adjacent heating elements 31 can be adjusted. This utility model does not limit the specific structure of the connecting component 32.

[0094] In other embodiments, a plurality of connecting components 32 are provided between two adjacent heating elements 31, and the plurality of connecting components 32 extend along a third direction. The reliability of the connection between two adjacent heating elements 31 is improved by the plurality of connecting components 32, which is beneficial to improving the overall strength of the heating component 3.

[0095] Reference Figure 10 and Figure 11 In some embodiments, at least one heating element 31 is connected to a lever 33, a portion of which extends to the outside of the housing 1. The lever 33 is moved to drive a plurality of connecting components 32 to switch between a first state and a second state.

[0096] Through the above technical solution, users can manually adjust the distance between multiple heating elements 31 in the heating assembly 3 by moving the lever 33, which effectively improves the operability of the heater 100.

[0097] In some specific embodiments, when the heating component 3 is in the first position, a lever 33 is connected to the heating element 31 that is furthest from the clearance space 12.

[0098] In this embodiment of the invention, the distance between multiple heating elements 31 can be adjusted by using a lever 33, which helps to reduce the cost of the heater 100.

[0099] In some other specific embodiments, each of the multiple heating elements 31 is provided with a lever 33.

[0100] Through the above technical solution, the density of the heating elements 31 at different positions in the first direction of the heating component 3 can be adjusted, so that the heater 100 can be applied to more scenarios, further increasing the practicality of the heater 100.

[0101] In some embodiments, the lever 33 is inserted into the corresponding heating element 31.

[0102] In this embodiment of the utility model, the connection between the lever 33 and the heating element 31 is simple, easy to install and disassemble, and conducive to improving the assembly efficiency of the heater 100.

[0103] In other embodiments, the lever 33 can also be connected to the heating element 31 by fasteners, or by a snap-fit ​​structure or adhesive. This invention does not limit this to any particular embodiment.

[0104] In some embodiments, the heating component 3 is movably disposed within the housing 1 and moves in a direction parallel to the first direction. The lever 33 moves to drive the heating component 3 to switch between a first position and a second position.

[0105] When lever 33 moves toward the clearance space 12, it causes the heating assembly 3 to move toward the clearance space 12 as a whole. During this process, the spacing between the multiple heating elements 31 in the heating assembly 3 continuously decreases. When the heating assembly 3 is in the second position, the spacing between the multiple heating elements 31 is the smallest. When lever 33 moves away from the clearance space 12, it causes the heating assembly 3 to move away from the clearance space 12 as a whole. During this process, the spacing between the multiple heating elements 31 in the heating assembly 3 continuously increases. When the heating assembly 3 is in the first position, the spacing between the multiple heating elements 31 is the largest.

[0106] In this embodiment of the utility model, the movement of the lever 33 can not only adjust the spacing of the multiple heating elements 31 in the heating assembly 3, but also adjust the position of the heating assembly 3 as a whole, reducing the difficulty of operating the heater 100 and improving the convenience of using the heater 100.

[0107] Reference Figure 5In some embodiments, at least one slide rail 17 is provided with a limiting member 174. When the lever moves to the heating element 31 furthest from the clearance space 12 and stops at the limiting member 174, the movement of the heating assembly 3 is restricted. At this time, the heating assembly 3 is in the first position, and the spacing between the multiple heating elements 31 is at its maximum. By providing the limiting member 174, the heating assembly 3 is prevented from moving and contacting the inner wall of the air duct space 11, thereby improving the heating effect of the heating assembly 3.

[0108] In other embodiments, the heater 100 further includes a drive assembly connected to the lever 33 to drive the lever 33 to move. The control module of the heater 100 can adjust the distance between the multiple heating elements 31 by controlling the working state of the drive assembly, and can also adjust the position of the heating element 3, effectively improving the intelligence of the heater 100. The drive assembly can be an electric push rod, a cylinder, a motor + lead screw assembly, or other structures, as long as it can drive the lever 33 to move; this invention does not impose any limitations on this.

[0109] In some specific embodiments, in the third direction, a third slide 173 is provided in the middle area of ​​the air outlet grille 161, and the lever 33 is movably disposed in the third slide 173, with the lever 33 passing through the third slide 173 so that a part of the lever 33 is located outside the housing 1.

[0110] In this embodiment of the present invention, the lever 33 is movably disposed within the third slide rail 173, which limits the movement mode of the lever 33, facilitates user operation, and also improves the overall stability of the movement of the heating assembly 3.

[0111] In some embodiments, the heater 100 is configured to have a warm air state and a cold air state. In the warm air state, the heating element 3 is in a first position, and both the fan assembly 2 and the heating element 3 are operational. In the cold air state, the heating element 3 is in a second position, the fan assembly 2 is operational, and the heating element 3 is not operational.

[0112] Through the above technical solution, the heater can not only be used for heating in low-temperature environments, but also for cooling in high-temperature environments, effectively improving the practicality of the heater 100. Furthermore, in warm air mode, the heating element 3 is located in the first position, which helps improve the uniformity of air heating and enhances the heating effect; in cold air mode, the heating element 3 is located in the second position, which helps reduce wind resistance and improves the airflow effect in cold air mode.

[0113] Reference Figure 3 and Figure 12In some embodiments, the heating assembly 3 includes a plurality of heating elements 31, each heating element 31 including two electrode pieces 313 and at least one PTC element 314. The two electrode pieces 313 are spaced apart along a first direction, and each PTC element 314 is disposed between the two electrode pieces 313. Each PTC element 314 is electrically connected to the two electrode pieces 313 respectively.

[0114] Each PTC element 314 is electrically connected to two electrode plates 313. The two electrode plates 313 can act as conductive media to be electrically connected to an external power source. When the external power source is turned on, current can flow into the PTC element 314. The PTC element 314 can generate heat after being energized, thereby realizing the heating function of the heating element 31. In addition, the two electrode plates 313 can also transfer the heat generated by the PTC element 314, which helps to increase the heating area of ​​the heating element 31, thereby improving the heating efficiency and heating uniformity of the heating element 31.

[0115] In this embodiment of the present invention, the heating component 3 includes a plurality of heating elements 31, each heating element 31 including a PTC element 314. The PTC element 314 dissipates heat through an electrode plate 313. There are no fins between adjacent heating elements 31, which effectively reduces the overall wind resistance of the heating component 3 and effectively improves the air output effect of the heater 100.

[0116] In some embodiments, the heating component 3 is configured such that the electrode plates 313 between two adjacent heating elements 31 have the same polarity.

[0117] The above technical solution avoids the risk of short circuit between two adjacent heating elements 31, and improves the safety and reliability of the heater 100.

[0118] In some embodiments, in each heating element 31, the sum of the contact areas of all PTC elements 314 with the two electrode plates 313 is S1, the contact area of ​​the two electrode plates 313 with air is S2, and the heating element 31 satisfies: S1 / S2≤0.18.

[0119] If the sum of the contact areas S1 of all PTC elements 314 and the two electrode plates 313 remains unchanged, the larger S1 / S2 is, the smaller the contact area S2 between the two electrode plates 313 and the air, the worse the heat dissipation effect of each heating element 31, which affects the heat exchange efficiency between the heating component 3 and the air, and affects the heating effect of the heater 100.

[0120] Reference Figure 15 and Figure 16In some application scenarios, the heating component 3 includes four heating elements 31, each heating element 31 including seven PTC elements 314, and each PTC element 314 has dimensions of length * width * thickness = 24mm * 2.4mm * 15mm. The heater 100 includes an air duct space, which includes an air passage, and the air passage includes a first area. The four PTC heating elements 31 are evenly distributed in the first area, and the dimensions of the air passage are: length * width * thickness = 400mm * 51mm * 60mm.

[0121] It should be noted that in this application scenario, the length direction refers to the third direction, the width direction refers to the first direction, and the thickness direction refers to the second direction.

[0122] When the heater is running in warm air mode, with an air outlet velocity of 2.5 m / s, compare the stable power of the heating element and the temperature rise of 0.5 meters. (Reference) Figure 15 and Figure 16 It can be seen that when S1 / S2 is greater than 0.18, the stable power and the temperature rise at 0.5 meters decrease sharply, while when it is less than 0.1, the stable power and the temperature rise at 0.5 meters remain almost unchanged. It is known that when the air velocity at the outlet is the same, the higher the stable power, the higher the temperature rise at 0.5 meters, and the better the heating performance. Therefore, S1 / S2 is preferably between 0.1 and 0.18.

[0123] It should be noted that the 0.5-meter temperature rise refers to the temperature rise effect of the air 0.5 meters away from the center of the air outlet 112.

[0124] In this embodiment of the present invention, the heating element 31 satisfies S1 / S2≤0.18, which ensures that the two electrode plates 313 in each heating element have sufficient contact area with the air, thereby improving the heat exchange efficiency between the heating element 31 and the air and improving the heating effect of the heater 100.

[0125] In some specific embodiments, S1 / S2 is 0.18, 0.16, 0.14 or other values, and this utility model does not limit this.

[0126] It should be noted that the value of S1 can be controlled by controlling the number of PTC elements 314 in each heating element 31 and / or the size of each PTC element 314; the value of S2 can also be controlled by controlling the thickness of the electrode sheet 313 in the second direction.

[0127] Reference Figure 3 , Figure 13 and Figure 14In some embodiments, when the heating component 3 is in the first position, the area of ​​the air duct space 11 for accommodating the heating component 3 is the first region 113. Each heating element 31 extends along the second direction. On the same cross section perpendicular to the second direction, the orthographic projection area of ​​each heating element 31 is S3. The windward area S_total of the heating component 3 is N*S3, where N is the number of heating elements 31. The orthographic projection area of ​​the inner peripheral wall of the first region 113 is S4. The heater 100 satisfies: S_total / S4≤0.2.

[0128] It should be noted that, in the second direction, the two sides of the first region 113 are flush with the two sides of the heating component 3.

[0129] Because the heating component 3 affects the wind resistance of its area, the first region 113 refers to the region in the air duct space 11 where the heating component 3 is installed in the direction of airflow. With the projected area S4 of the inner peripheral wall of the first region 113 remaining constant, the larger the total area S / S4, the larger the projected area S3 of each heating element 31, the greater the tilt of each heating element 31 relative to the second direction, and the greater the wind resistance of the heating component 3.

[0130] Reference Figure 17 and Figure 18 In some application scenarios, the heating component 3 includes four heating elements 31, each heating element 31 including seven PTC elements 314, and each PTC element 314 has dimensions of length * width * thickness = 24mm * 2.4mm * 15mm. The heater 100 includes an air duct space, which includes an air passage, and the air passage includes a first area. The four PTC heating elements 31 are evenly distributed in the first area, and the dimensions of the air passage are: length * width * thickness = 400mm * 51mm * 60mm.

[0131] It should be noted that in this application scenario, the length direction refers to the third direction, the width direction refers to the first direction, and the thickness direction refers to the second direction.

[0132] When the heater is running in warm air mode, with an air outlet velocity of 2.5 m / s, compare the stable power of the heating element and the temperature rise of 0.5 meters. (Reference) Figure 17 and Figure 18 It can be seen that when S_total / S_4 ≤ 0.2, the changes in stable power and temperature rise at 0.5 meters tend to be gradual. It is known that when the air velocity at the outlet is the same, the higher the stable power, the higher the temperature rise at 0.5 meters, and the better the heating performance. Therefore, S_total / S_4 is preferably below 0.2.

[0133] In some specific embodiments, S_total / S_4 is 0.196, 0.180, 0.157 or other values, and this utility model does not limit this.

[0134] In some embodiments, in the third direction, the distance between the heating element 31 and the inner wall of the air duct space 11 is 1 to 2 mm.

[0135] If the distance between the third-side upward heating element 31 and the inner wall of the air duct space 11 is less than 1mm, the air resistance will increase. If the distance between the third-side upward heating element 31 and the inner wall of the air duct space 11 is greater than 2mm, the heating effect on the air will be affected.

[0136] In this embodiment of the invention, the distance between the third-side upward heating element 31 and the inner wall of the air duct space 11 is 1-2 mm, which not only reduces the wind resistance of the heating element 31, but also ensures the heating effect on the air.

[0137] In some specific embodiments, the distance between the heating element 31 and the inner wall of the air duct space 11 is any one of 1mm, 1.2mm, 1.5mm, 1.8mm and 2mm or a range between any two.

[0138] In some embodiments, when the heating component 3 is in the first position, the area of ​​the air duct space 11 for accommodating the heating component 3 is a first region 113. The first region 113 is formed with multiple wind speed zones at intervals in a first direction, and the airflow velocity in different wind speed zones is different. The multiple wind speed zones include at least a first wind speed zone and a second wind speed zone. The airflow velocity in the first wind speed zone is greater than the airflow velocity in the second wind speed zone. When the heating component 3 is in the first position, the heat generated by the heating element 31 in the first wind speed zone is greater than the heat generated by the heating element 31 in the second wind speed zone.

[0139] Because the airflow velocity varies in different wind speed zones of the first region 113, the airflow velocity blown out of the air outlet 112 also varies. In related technologies, compared with the low-speed airflow flowing through the low-speed zone, the high-speed airflow flowing through the high-speed zone has a shorter contact time with the heating element 31, and the airflow temperature is lower than that of the low-speed airflow flowing through the low-speed zone. In other words, compared with the airflow flowing through the second wind speed zone, the airflow velocity in the first wind speed zone is higher, and the airflow temperature in the first wind speed zone is lower.

[0140] In the heater 100 designed in this utility model, reference can be made to Figure 3 The heating element 31 is constructed in multiple parts. In order to make the air outlet 112 blow out air with a more uniform temperature, the heat output of the heating element 31 located in the first wind speed zone needs to be greater than that of the heating element 31 located in the second wind speed zone. This improves the heating effect of the heating element 31 located in the first wind speed zone on the airflow, making the airflow flowing out of the air outlet 112 from the first wind speed zone at a higher temperature, and enabling the air outlet 112 to blow out air with a more uniform temperature.

[0141] According to the present invention, the heater 100 has multiple heating elements 31 designed such that, in the first position, the heating element 31 located in the first wind speed zone generates more heat than the heating element 31 located in the second wind speed zone. This results in the heating element 31 located in the first wind speed zone having a better heating effect than the heating element 31 located in the second wind speed zone. This can increase the temperature of the high-speed airflow, making the temperature of the high-speed airflow and the low-speed airflow more balanced. This allows the air outlet 112 to blow out a more uniformly heated airflow, improving the comfort of using the heater 100 and thus enhancing the user experience.

[0142] According to some embodiments of the present invention, the plurality of heating elements 31 include at least a first heating element 301 and a second heating element 302. The first heating element 301 is disposed in a first wind speed zone, and the second heating element 302 is disposed in a second wind speed zone. The first heating element 301 and the second heating element 302 have different sizes, and the heat output of the first heating element 301 is greater than that of the second heating element 302. And / or the heating power of the first heating element 301 and the second heating element 302 is different, and the heat output of the first heating element 301 is greater than that of the second heating element 302. And / or among the plurality of heating elements 31, at least one pair of adjacent heating elements 31 has a spacing different from the spacing of other adjacent heating elements 31, and the spacing of the heating elements 31 in the wind speed zone with high airflow velocity is smaller than the spacing of the heating elements 31 in the wind speed zone with low airflow velocity.

[0143] Specifically, when dividing the multiple heating elements 31, it can be that, among any two heating elements 31, the heating element 31 located in the wind speed zone with higher wind speed is the first heating element 301, and the heating element 31 located in the wind speed zone with lower wind speed is the second heating element 302; or, among the multiple heating elements 31, the multiple heating elements 31 located in the wind speed zone with higher wind speed is the first heating element 301, and the multiple heating elements 31 located in the wind speed zone with lower wind speed is the second heating element 302.

[0144] Furthermore, the fact that the heating element 31 in the first wind speed zone generates more heat than the heating element 31 in the second wind speed zone can be specifically manifested in the following ways: the first heating element 301 and the second heating element 302 have different sizes, and the first heating element 301 generates more heat than the second heating element 302. This could be because the heating area of ​​the first heating element 301 is larger than that of the second heating element 302, resulting in a greater heat output from the first heating element 301. Alternatively, the first heating element 301 and the second heating element 302 have different heating powers, and the first heating element 301 generates more heat than the second heating element 302. This could be because the heating power of the first heating element 301 is greater than that of the second heating element 302. The heat output of the first heating element 301 is greater than that of the second heating element 302. Furthermore, among the multiple heating elements 31, at least one pair of adjacent heating elements 31 has a spacing different from the spacing of other adjacent heating elements 31. The spacing of the heating elements 31 in the high airflow velocity zone is smaller than that in the low airflow velocity zone. In this case, the heating elements 31 in the high airflow velocity zone are more densely arranged, resulting in a higher energy density and better heating effect on the airflow. The dense arrangement of the heating elements 31 also slows down the airflow velocity, increasing the time for heat exchange between the airflow and the heating elements 31, thereby further improving the heating effect of the heating elements 31 in the high airflow velocity zone on the high-speed airflow.

[0145] In some embodiments, in addition to the number of heating elements and the total heating power, the multiple heating elements 31 may also have differences in at least one specification such as length, width, thickness, and spacing between adjacent heating elements 31.

[0146] Furthermore, the different dimensions of the first heating element 301 and the second heating element 302 can mean that the length, width, and thickness of the body of the first heating element 301 are different from those of the body of the second heating element 302, resulting in a larger total heating surface area of ​​the first heating element 301 and thus a better heating effect of the first heating element 301 on the airflow.

[0147] Other configurations of the heater 100 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0148] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0149] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A heater, characterized in that, include: The housing has an air duct space, which has an air inlet and an air outlet; A wind turbine assembly, wherein the wind turbine assembly is disposed within the air duct space and located between the air inlet and the air outlet; A heating assembly includes a plurality of heating elements, at least some of which are movably disposed in the housing to allow the heating assembly to have a switchable first position and a second position. In the first position, the heating assembly is located within the air duct space and adjacent to the air outlet. The plurality of heating elements are arranged along a first direction to define an air guide channel between two adjacent heating elements. The air guide channel extends in a direction from the impeller assembly toward the air outlet. In the first position, the width of at least one of the air guide channels in the first direction is different from that in the second position.

2. A heater, characterized in that, include: The housing has an air duct space, which has an air inlet and an air outlet, and the inner peripheral wall of the air duct space has a recessed clearance space. A wind turbine assembly, wherein the wind turbine assembly is disposed within the air duct space and located between the air inlet and the air outlet; A heating component is movably disposed within the housing to switch between a first position and a second position. In the first position, the heating component is located within the air duct space and adjacent to the air outlet. In the second position, at least a portion of the heating component is housed within the clearance space to avoid airflow. The heating component includes multiple heating elements.

3. The heater according to claim 1 or 2, characterized in that, The housing is provided with a slide, and at least a portion of the heating element is located within the slide to be movable relative to the housing.

4. The heater according to claim 1 or 2, characterized in that, The heating assembly also includes: A connecting component is provided, wherein two adjacent heating elements are connected by the connecting component, which has a switchable first state and a second state. In the first state, the distance between two adjacent heating elements is greater than that in the second state. In the second position, the connecting component is in the second state, and in the first position, the connecting component is in the first state.

5. The heater according to claim 4, characterized in that, The connecting assembly includes an intersecting and rotatably connected first connecting rod and second connecting rod. The two ends of the first connecting rod are respectively connected to two adjacent heating elements, and the two ends of the second connecting rod are respectively connected to two adjacent heating elements. Each heating element is rotatably connected to one of the first connecting rod and the second connecting rod and slidably connected to the other. Alternatively, the connecting assembly includes a first connector and a second connector, one of the two adjacent heating elements is rotatably connected to the first connector and the other is rotatably connected to the second connector, and the end of the first connector away from the heating element is rotatably connected to the end of the second connector away from the heating element.

6. The heater according to claim 4, characterized in that, At least one of the heating elements is connected to a lever, a portion of which extends to the outside of the housing. The lever is moved to drive the plurality of the connecting components to switch between the first state and the second state.

7. The heater according to claim 6, characterized in that, The lever is inserted into the corresponding heating element.

8. The heater according to claim 4, characterized in that, The heater is configured to have a warm air mode and a cold air mode. In the warm air mode, the heating element is located in the first position, and both the fan assembly and the heating element are working. In the cold air mode, the heating element is located in the second position, the fan assembly is working, and the heating element is not working.

9. The heater according to claim 1 or 2, characterized in that, Each heating element includes two electrode plates and at least one PTC element. The two electrode plates are spaced apart along the first direction, and each PTC element is disposed between the two electrode plates. Each PTC element is electrically connected to the two electrode plates respectively.

10. The heater according to claim 9, characterized in that, The heating assembly is configured such that the electrode plates between two adjacent heating elements have the same polarity; And / or, in each of the heating elements, the sum of the contact areas of all the PTC elements with the two electrode plates is S1, the contact area of ​​the two electrode plates with air is S2, and the heating element satisfies: S1 / S2≤0.

18.

11. The heater according to claim 1 or 2, characterized in that, When the heating component is located in the first position, the area of ​​the air duct space used to accommodate the heating component is the first region. Each heating element extends along the second direction, and on the same cross-section perpendicular to the second direction, the projected area of ​​each heating element is S3. The windward area S of the heating component is always N. S3, N is the number of heating elements; The projected area of ​​the inner peripheral wall of the first region is S4, wherein the heater satisfies: S_total / S4 ≤ 0.

2.

12. The heater according to claim 1 or 2, characterized in that, When the heating component is located at the first position, the area of ​​the air duct space used to accommodate the heating component is a first area. The first area is formed with multiple wind speed zones at intervals in the first direction, and the airflow velocity is different in different wind speed zones. The plurality of wind speed zones include at least a first wind speed zone and a second wind speed zone, wherein the airflow velocity in the first wind speed zone is greater than the airflow velocity in the second wind speed zone, and when the heating component is in the first position, the heat generated by the heating element in the first wind speed zone is greater than the heat generated by the heating element in the second wind speed zone.

13. The heater according to claim 12, characterized in that, The plurality of heating elements includes at least a first heating element and a second heating element, wherein the first heating element is disposed in the first wind speed zone and the second heating element is disposed in the second wind speed zone; in The first heating element and the second heating element are of different sizes, and the heat output of the first heating element is greater than that of the second heating element; and / or The first heating element and the second heating element have different heating powers, and the heat output of the first heating element is greater than that of the second heating element; and / or Among the plurality of heating elements, at least one pair of adjacent heating elements has a spacing different from the spacing of other adjacent heating elements, and the spacing of the heating elements in the wind speed zone with high airflow velocity is smaller than the spacing of the heating elements in the wind speed zone with low airflow velocity.

14. The heater according to claim 1 or 2, characterized in that, The inner peripheral wall of the air duct space is provided with a recessed clearance space, and at least a portion of the heating component in the second position is housed in the clearance space to avoid airflow.

15. The heater according to claim 14, characterized in that, The housing is provided with a first air duct assembly and a second air duct assembly connected to each other. The first air duct assembly and the second air duct assembly define the air duct space. The impeller assembly is located in the first air duct assembly, and the heating assembly is located in the second air duct assembly. A portion of the sidewall of the second air duct assembly protrudes outward to form the clearance space inside the second air duct assembly.

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