Warm air blower with flow dividing structure

Abstract

The utility model discloses a warm air blower with a shunting structure, which comprises a casing, an air outlet is arranged at the front part of the casing, an air inlet is arranged at the rear part of the casing, a fan, a connecting frame and an electric heater are arranged in the casing, the position of the electric heater corresponds to the air outlet, the position of the fan corresponds to the air inlet, and the electric heater is rectangular. The connecting frame is arranged between the electric heater and the fan, air guide pieces used for guiding airflow to the corners of the electric heater are arranged in the connecting frame, the fan is provided with fan blades, the rotating axes of the air guide pieces and the fan blades form acute angles, and the air guide pieces are distributed at the four corners of the connecting frame. The warm air blower with the flow dividing structure is favorable for improving the heating effect.

Description

Technical Field

[0001] This utility model relates to the field of heating appliances, specifically to a fan heater with a flow-diverting structure. Background Technology

[0002] Currently, space heaters are equipped with an electric heater and a fan. The fan generates airflow, which exchanges heat with the electric heater to produce warm air. To reduce costs and facilitate procurement, some space heaters use commercially available cabinet cooling fans, such as the one in Chinese Utility Model Patent Publication No. CN214791921U, "A Desktop Space Heater." The fan casing of this space heater is square. For another example, see Chinese Utility Model Patent Publication No. CN216742112U, "A Waterproof and Dustproof Cooling Fan." The electric heater in the aforementioned space heater is a P... For ease of manufacture, the electric heater is rectangular (or square) in the visual direction along the fan's rotation axis. However, because the fan impeller is circular, the corners of the electric heater (i.e., the four corners of the rectangle) do not receive enough airflow. This means that the heat exchange between the airflow and the electric heater is insufficient. If the electric heater is placed entirely within the impeller's range, some of the airflow generated by the impeller's rotation will not pass through the electric heater, which is not conducive to increasing the outlet air temperature and also results in poor heating effect. Therefore, the above-mentioned warm air heater needs to be improved. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a heater with a diversion structure, which is beneficial to improving the heating effect.

[0004] The objective of this utility model is achieved through the following technical solution.

[0005] This utility model discloses a fan heater with a diversion structure, comprising a housing, an air outlet at the front of the housing, an air inlet at the rear of the housing, a fan, a connecting frame, and an electric heater inside the housing, the electric heater being positioned corresponding to the air outlet, and the fan being positioned corresponding to the air inlet. The electric heater is rectangular, the connecting frame is located between the electric heater and the fan, and the connecting frame contains guide vanes for guiding airflow to the corners of the electric heater. The fan has fan blades, and the guide vanes form an acute angle with the rotation axis of the fan blades. The guide vanes are distributed at the four corners of the connecting frame.

[0006] Preferably, the connecting frame includes a side panel, and the two ends of the air guide plate are respectively fixedly connected to the corresponding side panel.

[0007] Preferably, the two ends of the air guide plate are respectively integrated with the corresponding frame plate.

[0008] Preferably, the air outlet is rectangular, and the electric heater is located within the corresponding range of the air outlet.

[0009] Preferably, the casing is cylindrical in shape, and the front of the casing is covered with an air outlet mesh cover.

[0010] Compared with the prior art, the advantages of this utility model are as follows: by setting a connecting frame between the electric heater and the fan, and providing air guide vanes inside the connecting frame to guide airflow to the corners of the electric heater, and the fan having fan blades, the rotation axes of the air guide vanes and the fan blades form an acute angle. The air guide vanes are distributed at the four corners of the connecting frame, which helps to enable the corners of the electric heater to exchange heat more fully with the airflow, thus improving the heating effect. Attached Figure Description

[0011] Figure 1 This is a frontal three-dimensional structural diagram of the air heater with a flow-diverting structure according to this utility model.

[0012] Figure 2 This is an exploded view of the heater with a flow-diverting structure according to this utility model.

[0013] Figure 3 This is a cross-sectional view of the heater with a flow-diverting structure according to the present invention, viewed from the right.

[0014] Figure 4 This is a rear-view perspective view of the fan, connecting frame, and electric heater assembly of this utility model.

[0015] Figure 5 This is a rear-view three-dimensional structural diagram of the combination of the connecting frame and the electric heater of this utility model.

[0016] Figure 6 This is a rear-view three-dimensional structural diagram of the connecting frame of this utility model.

[0017] Figure 7 This is a cross-sectional view of the connecting frame of this utility model (the cross-section passes through the rotation center of the fan blades and is perpendicular to the air guide vanes).

[0018] Figure 8 This is a frontal three-dimensional structural diagram of the electric heater of this utility model.

[0019] Figure 9 This is a frontal three-dimensional structural diagram of the present invention's air heater with a diversion structure, with the air outlet mesh removed.

[0020] Labeling: 1. Housing; 11. Front housing; 111. Air outlet; 12. Rear housing; 121. Air inlet; 2. Air outlet grille; 3. Air inlet grille cover; 4. Fan; 41. Fan blade; 42. Frame; 5. Connecting frame; 501. Side panel; 51. Air guide plate; 6. Electric heater; 60. Corner; 61. PTC heating element; 62. Fin; 63. Heater support frame. Detailed Implementation

[0021] The present invention will now be further described with reference to the accompanying drawings.

[0022] This utility model relates to a heater with a flow-diverting structure, such as... Figures 1 to 3 As shown, the device includes a housing 1. The front of the housing 1 has an air outlet 111, and the rear of the housing 1 has an air inlet 121. Inside the housing 1 are a fan 4, a connecting frame 5, and an electric heater 6. The electric heater 6 is positioned corresponding to the air outlet 111, and the fan 4 is positioned corresponding to the air inlet 121. Figure 8 As shown, the electric heater 6 is rectangular and includes several vertically arranged PTC heating elements 61. Fins 62 are provided on the left and right sides of each PTC heating element 61, as shown... Figure 2 and Figure 3 As shown, the connecting frame 5 is located between the electric heater 6 and the fan 4. Therefore, in the direction from back to front, the air inlet 121, fan 4, connecting frame 5, electric heater 6, and air outlet 111 are arranged sequentially. Furthermore, in the visual direction along the rotation axis of the fan blades 41, the air inlet 121, fan 4, connecting frame 5, electric heater 6, and air outlet 111 are approximately concentrically positioned. When the fan 4 operates, it forms an airflow from back to front (i.e., the fan blades 41 rotate around their rotation axis). The airflow blown forward by the fan 4 passes through the electric heater 6 and is then discharged from the air outlet 111. Figures 4 to 6 As shown, the connecting frame 5 is provided with a guide vane 51 for guiding airflow (i.e., the airflow generated by the operation of the fan 4) to the corner 60 of the electric heater 6, such as... Figure 8 As shown, since the electric heater 6 is rectangular, it has four corners 60, such as... Figure 4 As shown, fan 4 is equipped with fan blades 41, such as Figure 6 and Figure 7 As shown, the rotation axis of the air guide vane 51 and the fan blade 41 forms an acute angle (i.e., Figure 7 The angular dimension “X” in the figure, such as Figure 6 As shown, the air guide vanes 51 are distributed at the four corners of the connecting frame 5, that is to say, the number of air guide vanes 51 is set to four.

[0023] like Figure 5 and Figure 6As shown, the air guide vane 51 is positioned at the outer end of the fan blade 41. The airflow generated by the rotation of the fan blade 41 is cut and guided outward by the air guide vane 51. Thus, a portion of the airflow is diverted to the corner 60 by the air guide vane 51, allowing the corner 60 to exchange heat more fully with the airflow. The airflow then exits forward through the air outlet 111, more effectively transferring the heat energy of the electric heater 6 to the airflow, which is beneficial for improving the heating effect. In other words, it helps to relatively increase the outlet air temperature of the heater with the diversion structure. Because the air pressure on the inner side of the air guide vane 51 is relatively lower, the airflow generated by the rotation of the fan blade 41, which is relatively close to the rotation axis of the fan blade 41, diffuses outward to supplement the inner side of the air guide vane 51. For example, the angle dimension "X" can be set to 15° to 20°.

[0024] Furthermore, such as Figure 6 As shown, the connecting frame 5 includes a frame plate 501. Since the connecting frame 5 is rectangular, it has four frame plates 501. The two ends of the air guide plate 51 are fixedly connected to the corresponding frame plates 501, that is, the two ends of the air guide plate 51 are fixedly connected to two adjacent frame plates 501, which helps to simplify the support structure of the air guide plate 51. For example, the air guide plate 51 can be glued to the inner wall of the frame plate 501, or the air guide plate 51 and the frame plate 501 can be connected by fasteners.

[0025] Furthermore, the two ends of the air guide 51 are connected to the corresponding frame plate 501, thus avoiding the need to add an installation process between the air guide 51 and the frame plate 501, which helps to simplify the assembly process of the heater with the diversion structure.

[0026] Furthermore, such as Figure 2 As shown, the air outlet 111 is rectangular, as... Figure 9 As shown, the electric heater 6 is located within the corresponding range of the air outlet 111, so the airflow guided to the corner 60 by the air guide vane 51 can pass through the air outlet 111 in a roughly straight line, which helps to reduce wind resistance.

[0027] Furthermore, such as Figure 1 and Figure 9 As shown, the casing 1 has a cylindrical shape, as... Figure 1 As shown, the front cover of the casing 1 is equipped with an air outlet grille 2 (it should be noted that...). Figure 2 Since the exhaust grille 2 is not shown above, it covers the air outlet 111 to prevent debris from easily accumulating on the electric heater 6. More specifically, as shown... Figure 1 and Figure 2As shown, the housing 1 includes a front housing 11 and a rear housing 12. The rear end of the front housing 11 and the front end of the rear housing 12 are connected by a snap-fit ​​structure. A rear recess is formed at the front of the front housing 11, and an air outlet 111 is formed in the aforementioned rear recess. The air outlet grille 2 is semi-cylindrical, allowing it to cover the front housing 11. The air outlet grille 2 can be made of steel. The rear end of the air outlet grille 2 is hooked to the rear end of the front housing 11. An air inlet 121 is formed in the rear housing 12, and an air inlet cover 3 is provided for the air inlet 121. Figure 4 As shown, the fan 4 includes a frame 42, which is square in shape, and the fan blades 41 are disposed inside the frame 42, as shown. Figure 7 As shown, the rear end face of the connecting frame 5 abuts against the front end face of the connecting frame shell 42. A first screw passes through the connecting frame 5 and the shell 42 from front to back, and the first screw is screwed into the rear shell 12. Figure 2 As shown, the electric heater 6 is installed inside the heater support frame 63. The rear end face of the heater support frame 63 is abutted against the front end face of the connecting frame 5. A second screw passes through the heater support frame 63 from front to back and is screwed to the connecting frame 5. Thus, the frame shell 42, the connecting frame 5, and the heater support frame 63 combine to form an air duct structure. The fan blade 41 is installed inside the air duct structure. Figure 9 As shown, the front end of the heater support frame 63 is adapted to be inserted into the air outlet 111, so that the heater support frame 63 and the housing 1 are positioned relative to each other.

Claims

1. A fan heater with a split-flow structure, comprising a housing (1), wherein the front of the housing (1) is provided with an air outlet (111) and the rear of the housing (1) is provided with an air inlet (121), wherein the housing (1) is provided with a fan (4), a connecting frame (5) and an electric heater (6), wherein the electric heater (6) is positioned corresponding to the air outlet (111) and the fan (4) is positioned corresponding to the air inlet (121), characterized in that: The electric heater (6) is rectangular. The connecting frame (5) is located between the electric heater (6) and the fan (4). The connecting frame (5) is provided with air guide vanes (51) for guiding airflow to the corners (60) of the electric heater (6). The fan (4) is provided with fan blades (41). The air guide vanes (51) and the rotation axis of the fan blades (41) form an acute angle. The air guide vanes (51) are distributed at the four corners of the connecting frame (5).

2. The warm air blower with a flow-diverting structure according to claim 1, characterized in that: The connecting frame (5) includes a side plate (501), and the two ends of the air guide plate (51) are respectively fixedly connected to the corresponding side plate (501).

3. The warm air blower with a flow-diverting structure according to claim 2, characterized in that: The two ends of the air guide plate (51) are respectively connected to the corresponding frame plate (501) as one unit.

4. The warm air blower with a flow-diverting structure according to claim 1, characterized in that: The air outlet (111) is rectangular, and the electric heater (6) is located within the corresponding range of the air outlet (111).

5. The warm air blower with a flow-diverting structure according to claim 4, characterized in that: The casing (1) is cylindrical in shape, and the front of the casing (1) is covered with an air outlet mesh cover (2).

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