Air supply device and warm air blower

Abstract

The utility model relates to an air supply device and a warm air blower, and the air supply device comprises a first air channel, a second air channel, a third air channel and a fourth air channel, the second air duct surrounds the outer side of the first air duct, and the sectional area of the second air duct is gradually increased in the direction from the air inlet side to the air supply side; a gap is formed between the side wall of the second air duct and the side wall of the first air duct; and the grating plate is mounted in the gap and is connected with the outer side wall of the first air duct and the inner side wall of the second air duct. According to the air supply device, differentiated guiding can be carried out on air flow in the center and the periphery of air blowing, and the air supply area is increased.

Description

Technical Field

[0001] This utility model relates to air supply equipment, specifically to an air supply device and a warm air blower. Background Technology

[0002] Many air supply devices have small air outlet areas, basically the same as the blowing area of ​​the fan, and cannot deliver air over a wide area.

[0003] For example, the air outlet area of ​​a fan heater is basically the same as the front projection area of ​​the heating element. Considering the cost of the heating element, the area of ​​the heating element is generally not very large. This results in a small air outlet area and heating range, making it difficult to meet the heating needs of multiple people and large areas.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] In view of the problem of small air outlet area in existing air supply devices, this utility model discloses an air supply device and a warm air blower.

[0006] The technical solution adopted in this embodiment of the utility model is as follows:

[0007] An air supply device includes: a first air duct, the cross-sectional area of ​​which gradually increases from the air inlet side to the air outlet side; a second air duct, surrounding the outside of the first air duct, the cross-sectional area of ​​which gradually increases from the air inlet side to the air outlet side; and a gap between the sidewall of the second air duct and the sidewall of the first air duct; and a grille plate installed in the gap, connecting the outer sidewall of the first air duct and the inner sidewall of the second air duct.

[0008] A further technical solution is that the center point of the first air duct and the center point of the second air duct coincide, and the width of the gap located in the relative position is symmetrical with respect to the center point of the first air duct.

[0009] A further technical solution is that the plane of the grille is parallel to the air delivery direction of the second air duct.

[0010] A further technical solution is that multiple grating plates are provided; the installation positions and number of the grating plates located in relative positions are symmetrical with respect to the center point of the first air duct.

[0011] A further technical solution is that the sidewalls of the first air duct and the second air duct are each surrounded by multiple air duct walls, and from the air inlet side to the air outlet side, the air duct walls gradually tilt away from the center point of the first air duct.

[0012] A further technical solution is that the inclination of the wall of the second air duct is different from that of the wall of the first air duct.

[0013] A further technical solution is that both the first air duct and the second air duct are opened on the air duct plate, and the air duct plate is an arc-shaped plate that protrudes in the direction of air supply.

[0014] A warm air blower equipped with an air supply device as described in any of the preceding claims, the warm air blower further comprising a fan and a heating element; the heating element being mounted between the air supply side of the fan and the air inlet side of the air supply device; the air inlet side of a first air duct facing the heating element; and the air inlet side of a second air duct having an offset distance relative to the heating element.

[0015] A further technical solution is that the fan is fixed to the body assembly by a fan bracket; the heating element is fixed to the front of the fan by a heating element bracket; the air supply device covers the installation position of the heating element and is fixed to the body assembly; a front net is also fixed in front of the air supply device.

[0016] A further technical solution is that the heater is a vertical heater; the air inlet of the first air duct is a longitudinal rectangle; two fans are longitudinally fixed in the body assembly; the air delivery range of the two fans is opposite to the air inlet of the first air duct.

[0017] The beneficial effects of this utility model embodiment are as follows:

[0018] In this embodiment of the invention, the air supply device is provided with a first air duct and a second air duct, which can differentiate the airflow between the center and the periphery of the airflow. The first air duct allows the flowing air to be blown out from the front of the air supply device, while the second air duct can deliver the air to a larger area.

[0019] When the air supply device is installed on the heater, the air inlet of the first air duct faces the heating element directly. The air inlet of the second air duct is offset by a certain distance relative to the direct effect range of the heating element. The first air duct allows hot air to be blown out from the front of the air supply device, while the second air duct can blow hot air over a larger area, guiding the hot air in all directions. This makes the area covered by the heater larger than that of a traditional heater.

[0020] The entire air supply device has a simple structure, low cost, and is easy to implement. Attached Figure Description

[0021] Figure 1 This is a perspective view of the air supply device in an embodiment of this utility model.

[0022] Figure 2 yes Figure 1 The front view.

[0023] Figure 3 yes Figure 2 A bottom view.

[0024] Figure 4 This is a schematic diagram of the heater in an embodiment of this utility model.

[0025] Figure 5 yes Figure 4 Exploded view.

[0026] In the diagram: 1. Air supply device; 101. First air duct; 102. Second air duct; 103. Grille; 104. Gap; 2. Front grille; 3. Heating element bracket; 4. Heating element; 5. Fan bracket; 6. Fan; 7. Body assembly. Detailed Implementation

[0027] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the device proposed by this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer according to the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, only used to conveniently and clearly assist in illustrating the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only used to complement the content disclosed in the specification, for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0029] This utility model discloses an air supply device, which is installed on devices such as air conditioners, fans or blowers that provide airflow, and is used to regulate the air supply status of these devices.

[0030] Figure 1 This is a perspective view of the air supply device in an embodiment of this utility model. Figure 2 yes Figure 1 The front view. For example... Figure 1 , Figure 2As shown, in this embodiment, the air supply device 1 includes a first air duct 101, a second air duct 102, and a grille 103. From the side to the air supply side, the cross-sectional area of ​​the first air duct 101 gradually increases, allowing for the diffusion of the blown air. The second air duct 102 is arranged around the outside of the first air duct 101, and its cross-sectional area gradually increases from the air inlet side to the air supply side. The cross-sectional areas mentioned here refer to the areas parallel to the air supply and outlet. Furthermore, a gap 104 exists between the sidewall of the second air duct 102 and the sidewall of the first air duct 101. In actual use, the air inlet side of the gap 104 is the air inlet side of the second air duct 102, and the air blown out through the second air duct 102 flows out through the gap 104.

[0031] The grating plate 103 is installed in the gap 104, connecting the outer wall of the first air duct 101 and the inner wall of the second air duct 102. It can stably fix the structure of the first air duct 101 to the side wall of the second air duct 102, and can also regulate the gas flowing through the gap 104.

[0032] In this embodiment of the invention, the air supply device 1 is provided with a first air duct 101 and a second air duct 102, which can differentiate the airflow between the center and the periphery of the blower. When installing the air supply device 1, it is preferable that the air inlet of the first air duct 101 is located directly opposite the blower, while the air inlet of the second air duct 102 is located around the blower and offset from the blower or its edge by a certain distance. The first air duct 101 allows the flowing air to be blown out from the front of the air supply device 1, while the second air duct 102 can blow the air to a larger area. The air supply device with this configuration has a better air supply coverage area than the air outlet of the prior art.

[0033] Furthermore, the center point of the first air duct 101 coincides with the center point of the second air duct 102, and the width of the gap 104 located in the opposite position is symmetrical with respect to the center point of the first air duct 101, so as to make the air supply more uniform. Figure 2 As shown, in this example, the gaps 104 on the left and right sides are symmetrical with the longitudinal centerline of the first air duct 101 as the axis of symmetry, and the gaps 104 on the upper and lower sides are symmetrical with the transverse centerline of the first air duct 101 as the axis of symmetry. Since both the first air duct 101 and the second air duct 102 in this embodiment are longitudinally rectangular, or have small-radius arcs at the edges but are generally close to longitudinally rectangular, the gaps 104 on the upper and lower sides are relatively wide in order to make full use of the air supply space and maximize the air supply coverage area.

[0034] Furthermore, the plane of the grille 103 is parallel to the airflow direction of the second air duct 102, that is, from Figure 2As shown in the front view, the grille 103 is perpendicular to the air outlet and air inlet of the first air duct 101 or the second air duct 102. This minimizes obstruction to the airflow and does not reduce the air volume. Simultaneously, the grille 103 disperses and rectifies the airflow passing through the second air duct 102 to a certain extent, making the airflow more uniform, reducing airflow impact and turbulence, and thus lowering air supply noise.

[0035] Furthermore, multiple grille plates 103 are provided, and the installation positions and number of the grille plates 103 in relative positions are symmetrical with respect to the center point of the first air duct 101. That is, with the longitudinal center line of the first air duct 101 as the axis of symmetry, the grille plates 103 on the left and right sides are symmetrical, and with the transverse center line of the first air duct 101 as the axis of symmetry, the grille plates 103 on the upper and lower sides are symmetrical.

[0036] Furthermore, the sidewalls of both the first air duct 101 and the second air duct 102 are each surrounded by multiple air duct walls. From the air inlet side to the air outlet side, the air duct walls gradually slope away from the center point of the first air duct 101. In this embodiment, there are four air duct walls. The air duct walls can be flat or slightly curved surfaces.

[0037] The inclination of the duct wall of the second air duct 102 can be the same as or different from that of the duct wall of the first air duct 101. Different inclinations of the duct wall of the second air duct 102 and the first air duct 101 allow the airflow to form different diffusion angles within the duct. Preferably, the inclination of the duct wall of the second air duct 102 can be greater than that of the duct wall of the first air duct 101. That is, relative to the center of the first air duct 101, the air supply side of the second air duct 102 tends to diffuse outwards more. This makes the first air duct 101 more effective at directly delivering air to the target area, while the second air duct 102 helps to expand the air supply range, resulting in a more uniform temperature distribution throughout the space.

[0038] Figure 3 yes Figure 2 A bottom view. For example... Figures 1-3 As shown, both the first air duct 101 and the second air duct 102 are formed on the air duct plate, which is an arc-shaped plate convex in the direction of air supply. The curved surface of the air outlet plate can adjust the air speed and reduce turbulence and noise generated by the airflow through the air supply device 1. Moreover, the curved design can effectively reduce dead angles of airflow on the air supply side, allowing the air to diffuse to a larger angle and improving air supply efficiency.

[0039] Figure 4 This is a schematic diagram of the heater in an embodiment of this utility model. Figure 5 yes Figure 4 An exploded view. (For example...) Figure 4 , Figure 5As shown, this embodiment also discloses a warm air blower equipped with the air supply device described in the embodiments above. The warm air blower further includes a fan 6 and a heating element 4. The heating element 4 is installed between the air supply side of the fan 6 and the air inlet side of the air supply device 1. The air blown out in this way is hot air.

[0040] Furthermore, the air inlet of the first air duct 101 faces the heating element 4 directly. The air inlet of the second air duct 102 is offset from the direct action range of the heating element 4. For example, specifically, the air inlet of the second air duct 102 is offset from the edge of the heating element 4, and the air inlet of the second air duct 102 has a preset angle with the front of the heating element 4. The first air duct 101 allows hot air to be blown out from the front of the air supply device 1, while the second air duct 102 can blow hot air to a larger area and guide hot air in all directions. The air supply device configured in this way has a better air supply coverage area than ordinary air outlets in the prior art.

[0041] Specifically, the fan 6 is fixed to the fan bracket 5 by clips, and the heating element 4 is fixed to the heating element bracket 3 by clips. Both the fan bracket 5 and the heating element bracket 3 are fixed in the body assembly 7, with the heating element bracket 3 located on the air supply side of the fan 6. The air supply device 1 covers the installation position of the heating element 4 and is fixed to the body assembly 7. A front mesh 2 is also fixed in front of the air supply device 1.

[0042] like Figure 4 , Figure 5 As shown, the heater in this embodiment is a vertical heater. Correspondingly, to make full use of the space of the heater, the air inlet of the first air duct 101 is a vertical rectangle, or has slightly curved edges but is generally close to a vertical rectangle. Correspondingly, two fans 6 are fixed at the vertically positioned vertically in the body assembly 7, and the air blowing range of the two fans 6 corresponds to the air inlet of the first air duct 101. This can increase the airflow and also increase the diversity of air delivery modes by adjusting the two fans 6 separately.

[0043] Of course, those skilled in the art will understand that the air supply device of this embodiment is not limited to a heater, but can also be applied to the air supply of a cooler. Similarly, the air supply device of this embodiment is not limited to a vertical fan. For example, after adjusting the overall shape of the first air duct 101 and the second air duct 102 to a square or approximately square shape, the air supply device can also be used for a tabletop fan.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An air supply device, characterized in that, include: The cross-sectional area of ​​the first air duct gradually increases from the air inlet side to the air outlet side. The second air duct surrounds the outside of the first air duct, and the cross-sectional area of ​​the second air duct gradually increases from the air inlet side to the air outlet side; and there is a gap between the sidewall of the second air duct and the sidewall of the first air duct. A grating plate is installed in the gap, connecting the outer wall of the first air duct and the inner wall of the second air duct.

2. The air supply device according to claim 1, characterized in that, The center point of the first air duct and the center point of the second air duct coincide, and the width of the gap located in the opposite position is symmetrical with respect to the center point of the first air duct.

3. The air supply device according to claim 1, characterized in that, The plane of the grille is parallel to the air delivery direction of the second air duct.

4. The air supply device according to claim 1, characterized in that, Multiple grating plates are provided; the installation positions and number of the grating plates in relative positions are symmetrical with respect to the center point of the first air duct.

5. The air supply device according to claim 1, characterized in that, The sidewalls of the first air duct and the second air duct are each surrounded by multiple air duct walls. From the air inlet side to the air outlet side, the air duct walls gradually slope away from the center point of the first air duct.

6. The air supply device according to claim 5, characterized in that, The inclination of the wall of the second air duct is different from that of the wall of the first air duct.

7. The air supply device according to claim 1, characterized in that, Both the first and second air ducts are formed on an air duct plate, which is an arc-shaped plate that bulges out in the direction of air supply.

8. A warm air blower equipped with an air supply device as described in any one of claims 1 to 7, characterized in that, The heater also includes a fan and a heating element; the heating element is installed between the air supply side of the fan and the air inlet side of the air supply device; The air inlet side of the first air duct faces the heating element; the air inlet side of the second air duct is offset relative to the heating element.

9. The warm air blower according to claim 8, characterized in that, The fan is fixed to the body assembly by a fan bracket; the heating element is fixed to the front of the fan by a heating element bracket; the air supply device covers the installation position of the heating element and is fixed to the body assembly; a front net is also fixed in front of the air supply device.

10. The warm air blower according to claim 8, characterized in that, The heater is a vertical heater; the air inlet of the first air duct is a vertical rectangle; two fans are fixed vertically in the body assembly; the air delivery range of the two fans is opposite to the air inlet of the first air duct.

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