Air supply equipment, air supply assembly, fan heater and control method

Abstract

The invention discloses air supply equipment, an air supply assembly, a fan heater and a control method, and relates to the technical field of air supply devices.The air supply equipment comprises an air guide body and the air supply assembly, and the air guide body is provided with an upper portion and a lower portion; the air supply assembly is arranged on the upper portion of the air guide body and provided with an air supply outlet. The air guide body is provided with an air guide face extending in the direction from the upper portion to the lower portion, the air supply assembly at least has a wall-attached air supply state, and in the wall-attached air supply state, at least part of airflow blown out of the air supply assembly through the air supply outlet flows downwards under the drainage effect of the air guide face. According to the technical scheme, at least part of airflow blown out by the air supply assembly through the air supply outlet flows downwards under the drainage effect of the air guide face, the coanda effect can be generated between the air guide face and the airflow, the airflow is guided by the air guide face, and therefore the movement stroke of the airflow in the extending direction of the air guide face is increased, and the movement efficiency is improved. Therefore, the energy consumption of the fan can be relatively reduced.

Description

Technical Field

[0001] This invention relates to the field of air supply device technology, and in particular to an air supply device, air supply component, warm air blower and control method. Background Technology

[0002] A warm air heater is a combined unit consisting of a fan, an electric motor, and an air heater. Current technology typically uses a forward-blowing method, but because hot air is denser than cold air, the heated air rises, resulting in a "warm head, cold feet" situation. This causes most of the heated air to accumulate near the ceiling, which is detrimental to energy efficiency and comfort. If a downward-blowing method were used, a higher airflow velocity would be needed to deliver the hot air to the ground. This increases the fan's energy consumption and noise. Furthermore, the higher airflow velocity accelerates heat exchange with the ground, wasting heat and further increasing energy consumption. Summary of the Invention

[0003] The main objective of this invention is to provide an air supply device, air supply component, warm air blower, and control method, which aims to reduce the energy consumption of delivering warm air to the vicinity of the ground.

[0004] To achieve the above objectives, the present invention provides an air supply device, comprising:

[0005] The air guide body has an upper part and a lower part;

[0006] An air supply assembly is disposed on the upper part of the air guide body, and the air supply assembly has an air outlet;

[0007] The air guide body has an air guide surface extending along the upper to lower direction, and the air supply assembly has at least a wall-mounted air supply state. In the wall-mounted air supply state, at least part of the airflow blown out by the air supply assembly through the air outlet flows downward under the guidance of the air guide surface.

[0008] In one embodiment, the height of the air guide body is not greater than 1.5 times the displacement of the air supply assembly at the air outlet.

[0009] In one embodiment, the air outlet is arranged around the air guide body.

[0010] This invention proposes a warm air blower, which includes a housing assembly, a heating element, and a fan. The housing assembly has an air inlet and an air outlet. The fan drives airflow to enter the housing assembly through the air inlet and exit through the air outlet. The air outlet is oriented downwards. The heating element is placed inside the housing assembly to heat the airflow so that hot air is blown out of the air outlet. The housing assembly also includes a guide surface, which is disposed adjacent to the air outlet. At least a portion of the guide surface extends downwards along the air outlet to form a Coanda wall, which is used to guide at least a portion of the hot air blown out of the air outlet downwards.

[0011] In one embodiment, the housing assembly has a support portion for supporting itself on a placement surface during operation, the Coanda wall extending downward along the air outlet, and at least a portion of the hot air blown out from the air outlet flowing toward the lower part of the support portion under the guidance of the Coanda wall.

[0012] In one embodiment, the Coanda wall is a surface exposed to the outside, and / or the Coanda wall is the outer surface of the housing assembly.

[0013] In one embodiment, the air supply direction at the air outlet is set at a first angle to the air outlet plane, wherein the first angle is not greater than 90 degrees and not less than 75 degrees.

[0014] In one embodiment, the air outlet plane extends horizontally.

[0015] In one embodiment, the edge line of the projection surface formed by the air guide surface facing the vertical plane is a straight edge line extending from top to bottom.

[0016] In one embodiment, the edge line of the straight line is set at a second angle with the horizontal direction, and the second angle is not greater than 90 degrees and not less than 75 degrees;

[0017] And / or, the straight edge line is set at a third angle with the air supply direction at the air outlet, the third angle being no greater than 180 degrees and no less than 165 degrees.

[0018] In one embodiment, the air guide surface at least partially expands in a curved manner from top to bottom.

[0019] In one embodiment, the edge line of the projection surface formed by the air guide surface facing the vertical plane is a curved edge line extending from top to bottom;

[0020] The tangent of the curved edge line near the air outlet is set at a fourth angle with the horizontal direction, and the fourth angle is not greater than 105 degrees and not less than 90 degrees.

[0021] And / or, the tangent of the edge line of the curve away from the air outlet is set at a fifth angle with the horizontal direction, the fifth angle being no greater than 90 degrees and no less than 75 degrees.

[0022] The present invention also proposes an air supply assembly for installation on the upper part of an air guide body, the air guide body having an air guide surface extending in the direction from the upper part to the lower part, the air supply assembly having an air outlet, the air supply assembly having at least a wall-mounted air supply state, in the wall-mounted air supply state, at least a portion of the airflow blown out by the air supply assembly through the air outlet flows downward under the guiding action of the air guide surface.

[0023] In one embodiment, the air guide is a wall, a column, or an air guide plate.

[0024] The present invention also proposes a warm air blower, characterized in that it includes the air supply device or air supply component described in any of the above embodiments;

[0025] The air supply assembly includes a heating structure for heating the airflow within the air supply assembly.

[0026] In one embodiment, the heating structure includes a heating element, which is used to heat the airflow within the air supply assembly after generating heat.

[0027] In one embodiment, the heating element includes a heating portion extending in a horizontal direction and a plurality of fins arranged in a horizontal direction, the fins being fixedly connected to the heating portion.

[0028] In one embodiment, the air supply assembly further includes an air inlet screen, a fan, and an air supply screen, with a receiving cavity formed between the air inlet screen and the air supply screen, and the heating structure and the fan disposed within the receiving cavity.

[0029] The present invention also provides a control method for controlling the air supply equipment, air supply assembly, or heater described in any of the above embodiments, the control method comprising:

[0030] At least a portion of the airflow blown out of the air outlet by the air supply device is controlled to flow downward under the guidance of the air guide surface.

[0031] Using the technical solution of this embodiment, at least part of the airflow blown out by the air outlet of the air supply component flows downward under the guidance of the air guide surface, so that the air guide surface and the airflow can have a Coanda effect. The air guide surface guides the airflow, thereby increasing the movement distance of the airflow in the extension direction of the air guide surface, which can relatively reduce the energy consumption of the fan. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of an embodiment of the air supply device of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of an embodiment of the air supply device of the present invention;

[0035] Figure 3 This is a schematic diagram of the structure of an embodiment of the air supply device of the present invention;

[0036] Figure 4 This is an exploded view of an embodiment of the air supply device of the present invention;

[0037] Figure 5 This is a flowchart illustrating an embodiment of the control method of the present invention.

[0038] Explanation of icon numbers:

[0039] 100 - Air supply equipment, 100a - Air outlet, 100b - Air outlet plane;

[0040] 110 - Air supply assembly, 112 - Air inlet grille, 114 - Fan, 116 - Heating structure, 118 - Air supply grille;

[0041] 120 - air guide body, 120a - air guide surface.

[0042] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0044] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0045] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0046] Please see Figures 1 to 4 The present invention proposes an air supply device 100, including an air guide body 120 and an air supply assembly 110. The air guide body 120 has an upper part and a lower part. The air supply assembly 110 is disposed on the upper part of the air guide body 120 and has an air supply port 100a. The air guide body 120 has an air guide surface 120a extending from the upper part to the lower part. The air supply assembly 110 has at least a wall-mounted air supply state. In the wall-mounted air supply state, at least part of the airflow blown out by the air supply assembly 110 through the air supply port 100a flows downward under the guiding effect of the air guide surface 120a.

[0047] Using the technical solution of this embodiment, at least part of the airflow blown out by the air outlet 100a of the air supply component 110 flows downward under the guidance of the air guide surface 120a, so that the air guide surface 120a and the airflow can have a Coanda effect. The air guide surface 120a guides the airflow, thereby increasing the movement distance of the airflow in the extension direction of the air guide surface 120a, which can relatively reduce the energy consumption of the fan 114.

[0048] Generally speaking, the air supply direction V1 at the air outlet 100a can be defined as the extension direction of the wall surface at the air outlet 100a. When an oscillating component for controlling the air supply direction V1 is provided at the air outlet 100a, the air supply direction V1 can be defined as the extension direction of the oscillating component.

[0049] The air supply component 110, through the air outlet 100a, can have an air supply direction V1 that is approximately parallel to or at a certain angle to the air guide surface 120a. For example, Figure 1As shown, when the air guide surface 120a is a cylindrical surface extending vertically, the air delivery direction V1 at the air outlet 100a can be vertically downward and parallel to the air guide surface 120a; or the air delivery direction V1 at the air outlet 100a can also be inclined towards the air guide surface 120a. For example, when the air guide surface 120a is a conical surface that gradually expands outward from top to bottom, the air delivery direction V1 at the air outlet 100a can be vertically downward, inclined inward, or inclined outward, as long as at least part of the airflow blown from the air outlet 100a can flow to the air guide surface 120a and flow downward under the guidance of the air guide surface 120a.

[0050] To achieve better wall-mounted air supply effect, the air supply component 110 may be tilted towards the air guide surface 120a through the air supply port 100a, so that the airflow blown out of the air supply port 100a can flow to the air guide surface 120a as much as possible, and then flow downward under the guidance of the air guide surface 120a.

[0051] In one feasible implementation, the air guide body 120 is fixed to the ground, and the air guide surface 120a can guide the airflow output from the air outlet 100a to the ground.

[0052] Furthermore, this embodiment does not limit the temperature of the airflow output from the air outlet 110a. When the airflow output from the air outlet 110a is warm relative to the air, the airflow is deposited on the ground under the guidance of the air guide surface 120a, and then rises under its own lift. When this air supply device 100 is applied indoors, it can make warm air fill all parts of the room, reducing the possibility that warm air is difficult to blow to the ground.

[0053] like Figure 1 As shown, in an embodiment of the present invention, the air supply direction V1 at the air outlet 100a is set at a first angle A with the air outlet plane 100b of the air outlet 100a. The first angle A is not greater than 90 degrees and not less than 75 degrees.

[0054] Optionally, the first included angle A is 75 degrees, 80 degrees, 85 degrees or 90 degrees.

[0055] It is understandable that the angle between the air supply direction V1 at the air outlet 110a and the air guide surface 120a within a certain range can achieve a good air guiding effect. In this embodiment, setting the first included angle A between 75 degrees and 90 degrees facilitates the setting of the air guide surface 120a. For example, the air guide surface 120a can be set as follows... Figure 1 The vertical plane shown.

[0056] Furthermore, the air outlet plane 100b at the air outlet 100a extends horizontally.

[0057] Please see Figure 1 and Figure 2 In this embodiment of the invention, the edge line of the projection surface formed by the air guide surface 120a facing the vertical plane is a straight edge line extending from top to bottom.

[0058] like Figure 1 As shown, in one feasible embodiment, from the upper part to the lower part of the air guide body 120, the edge line of the projection surface formed by the air guide surface 120a toward the vertical plane is a vertical straight edge line.

[0059] like Figure 2 As shown, in one feasible embodiment, from the upper part to the lower part of the air guide body 120, the edge line of the projection surface formed by the air guide surface 120a toward the vertical plane is an inclined straight edge line.

[0060] By adopting the technical solution of this embodiment, the design of the profile of the air guide surface 120a facilitates the processing and manufacturing of the air guide body 120.

[0061] Furthermore, from the upper part to the lower part of the air guide body 120, the edge line of the projection surface formed by the air guide surface 120a facing the vertical plane is a straight edge line extending from top to bottom. This straight edge line is set at a second angle B with the horizontal direction. The second angle B is not greater than 90 degrees and not less than 75 degrees.

[0062] Optionally, the second included angle B is 75 degrees, 80 degrees, 85 degrees or 90 degrees.

[0063] Please see Figure 2 In this embodiment of the invention, the edge line of the projection surface formed by the air guide surface 120a facing the vertical plane is a straight edge line extending from top to bottom. The straight edge line is set at a third angle C with the air supply direction V1 at the air outlet 100a. The third angle C is not greater than 180 degrees and not less than 165 degrees.

[0064] In this embodiment, the third included angle C is set within the range of 165 degrees to 180 degrees, resulting in a relatively higher interaction force between the airflow and the air guide surface 120a, which is beneficial for increasing the air guide distance of the air guide surface 120a.

[0065] Optionally, the third included angle C is 165 degrees, 170 degrees, 175 degrees or 180 degrees.

[0066] Please see Figure 3 In this embodiment of the invention, from the upper part to the lower part of the air guide body 120, the air guide surface 120a gradually expands in a curved manner from top to bottom.

[0067] In other words, the outer contour of the air guide 120 gradually increases from top to bottom, and the line formed by the air guide surface 120a in this direction is curved. The technical solution of this embodiment guides the airflow through a curved surface, which can further improve the wall adhesion effect and thus increase the air guide distance.

[0068] Furthermore, the edge line of the projection surface formed by the air guide surface 120a facing the vertical plane is a curved edge line extending from top to bottom. The tangent of the curved edge line near the end of the air outlet 100a is set at a fourth angle E with the horizontal direction, the fourth angle E being no greater than 105 degrees and no less than 90 degrees; and / or, the tangent of the curved edge line away from the end of the air outlet 100a is set at a fifth angle F with the horizontal direction, the fifth angle F being no greater than 90 degrees and no less than 75 degrees.

[0069] Optionally, the fourth included angle E is 90 degrees, 95 degrees, 100 degrees or 105 degrees; the fifth included angle F is 75 degrees, 80 degrees, 85 degrees or 90 degrees.

[0070] This embodiment defines the structural shape of both ends of the air guide surface 120a, which facilitates the installation of the air guide body 120 and can smoothly guide the airflow to the middle of the air guide surface 120a or smoothly guide the airflow to the ground.

[0071] In an embodiment of the present invention, the height of the air guide 120 is not greater than 1.5 times the displacement of the air supply assembly 110 at the air outlet 100a at the maximum air supply speed.

[0072] For example, if the maximum air velocity at the air outlet 100a is 1 m / s, then the height of the air guide 120 should not exceed 1.5 m. This embodiment's technical solution, through the design of the dimensions of the air guide 120, allows the airflow to move with a certain dynamic force to the end of the air guide surface 120a. When the air guide 120 is placed on the ground, the air guide surface 120a can guide the airflow to the ground, reducing the possibility of the airflow dissipating before reaching the ground.

[0073] Please refer to Figures 1 to 3 In an embodiment of the present invention, the air outlet 100a is arranged around the air guide body 120.

[0074] Correspondingly, the air outlet 100a can also be ring-shaped. Alternatively, there can be multiple air outlets 100a arranged around the air guide body 120. This design can fully utilize the side wall structure of the air guide body 120 and improve air guiding efficiency.

[0075] The present invention also proposes a warm air blower 114, which includes a housing assembly, a heating element, and a fan 114. The housing assembly has an air inlet and an air outlet 100a. The fan 114 is used to drive airflow into the housing assembly through the air inlet and out through the air outlet 100a. The air outlet 100a is arranged facing downward. The heating element is placed inside the housing assembly to heat the airflow so that hot air is blown out through the air outlet 100a. The housing assembly also includes a guide surface 120a, which is arranged adjacent to the air outlet 100a. At least a portion of the guide surface 120a extends downward along the air outlet 100a to form a Coanda wall. The Coanda wall is used to guide at least a portion of the hot air blown out through the air outlet 100a downward.

[0076] In this embodiment, when the heater 114 is working, external airflow flows from the air inlet into the housing assembly under the drive of the fan 114. After being heated by the heating element inside the housing assembly, it forms a hot airflow, which is then blown out from the air outlet 100a as hot air. At least a portion of the hot air blown out from the air outlet 100a is guided downwards by the Coanda wall of the guide surface 120a, allowing the Coanda effect to occur between the guide surface 120a and the airflow. The Coanda wall guides the airflow, increasing the travel distance of the airflow in the Coanda wall extension direction, thus relatively reducing the energy consumption of the fan 114. Furthermore, the hot airflow is guided downwards to a lower position (e.g., near the ground). Due to buoyancy, the hot airflow gradually rises from the ground, which helps to raise the air temperature near the feet, reduce the vertical temperature difference, and improve comfort. It also helps to prevent hot air from quickly accumulating near the roof, accelerating the increase in the average air temperature within the activity space.

[0077] It is worth noting that the housing assembly is part of the heater 114. In some cases, the housing assembly includes not only the outer shell but also the internal structure located within the outer shell. The air guide surface 120a may be formed by a portion of the structure of the housing assembly, or the air guide surface 120a may be formed by other components independent of the housing assembly.

[0078] Furthermore, the housing assembly has a support portion for supporting itself on the placement surface during operation, and the Coanda wall extends downward along the air outlet 100a. At least part of the hot air blown out by the air outlet 100a flows toward the lower part of the support portion under the guidance of the Coanda wall.

[0079] In this embodiment, the housing assembly may specifically include a housing body and a support portion connected to the housing body. The support portion extends downward from the bottom of the housing body, and its bottom surface rests on the placement surface, thereby supporting the entire heater 114. One or more air outlets 100a may be provided at the bottom of the housing body near the support portion. For example, the air outlets 100a may be annular and surround the periphery of the support portion. In this case, the support portion may also serve as an air guide 120, with its outer peripheral surface forming a guiding surface, thereby directing the hot air blown out by the air outlets 100a downward to a lower position. The support portion may be cylindrical, conical, square, or other irregularly shaped. Optionally, the bottom diameter of the support portion is larger than its top diameter. For example, the support portion may be a tapered shape that gradually expands from top to bottom, allowing it to provide stable support and also facilitating both downward and outward airflow, thereby widening the airflow delivery area.

[0080] Furthermore, the coanda wall is a surface exposed to the outside environment, and / or the coanda wall is the outer surface of the housing assembly. For example, the coanda wall can be a wall surface located near the air outlet 100a, or the surface of an air guide plate located on a wall. Alternatively, the coanda wall can be formed from the outer surface of the housing assembly. For example, in an embodiment where the housing assembly includes a support portion, the outer surface of the support portion can form the coanda wall.

[0081] In the embodiment of the warm air blower 114, the specific structural features of the air guide surface 120a, the angular relationship between the air guide surface 120a and the horizontal direction, and the angular relationship between the air guide surface 120a and the air outlet 100a can all be referred to the embodiment of the air supply equipment described above, and will not be repeated here.

[0082] The present invention also proposes an air supply assembly 110 for installation on the upper part of an air guide body 120. The air guide body 120 has an air guide surface 120a extending from the upper part to the lower part. The air supply assembly 110 has an air outlet 100a. The air supply assembly 110 has at least a wall-mounted air supply state. In the wall-mounted air supply state, at least part of the airflow blown out by the air supply assembly 110 through the air outlet 100a flows downward under the guiding effect of the air guide surface 120a.

[0083] In one embodiment, the air guide 120 is a wall, column, or air guide plate. The air guide plate can be a detachable or adhesive structure, which can be directly attached to a wall, column, or other structure to form an air guide surface 120a.

[0084] The present invention also proposes a warm air blower, including an air supply device 100 or an air supply assembly 110 according to any of the above embodiments; the air supply assembly 110 includes a heating structure 116, which is used to heat the airflow within the air supply assembly 110. The specific structure of the air supply device 100 and the air supply assembly 110 is as described in the above embodiments. Since this warm air blower adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0085] This embodiment does not limit the specific form of the heating structure 116. In some feasible implementations, the heating structure 116 can heat the airflow by electric heating or by an air conditioning heat exchanger.

[0086] In one specific embodiment, the heating structure 116 includes a heating element, which heats the airflow within the air supply assembly 110 after being heated. In this embodiment, the heating element can be heated by an electric current.

[0087] like Figure 4 As shown, the heating element includes a heating part extending in a horizontal direction and a plurality of fins arranged in a horizontal direction, with the fins fixedly connected to the heating part.

[0088] In this embodiment, the fins can increase the contact area between the heating element and the airflow, thereby improving the heating effect.

[0089] Please continue reading. Figure 4 The air supply assembly 110 also includes an air inlet screen 112, a fan 114 and an air supply screen 118. An inlet screen 112 and an air supply screen 118 form a receiving cavity, and the heating structure 116 and the fan 114 are located in the receiving cavity.

[0090] Specifically, the air inlet screen 112 and the air outlet screen 118 can be directly fastened together to form a receiving cavity, or the air inlet screen 112 and the air outlet screen 118 can be respectively set on both sides of the housing, or other connection methods can be used, as long as a receiving cavity can be formed between the air inlet screen 112 and the air outlet screen 118. Driven by the fan 114, the end of the fan 114 near the air outlet screen 118 forms a positive pressure, and the end near the air inlet screen 112 forms a negative pressure, so that air can enter from the air inlet screen 112 and exit from the air outlet screen 118. During this process, the heating structure 116 can heat the airflow, so that the air outlet screen 118 outputs hot airflow.

[0091] The present invention also provides a control method for controlling the air supply device 100, air supply assembly 110, or heater in any of the above embodiments. The control method includes:

[0092] S10: Control at least a portion of the airflow blown out by the air supply device 100 through the air outlet 100a to flow downward under the guidance of the air guide surface 120a.

[0093] The control method of this embodiment controls at least a portion of the airflow blown out of the air outlet 100a by the air supply device 100 to flow downwards under the guidance of the air guide surface 120a, thereby generating a Coanda effect between the airflow and the air guide surface 120a and extending the air supply distance. In practical applications, the air supply device 100 can directly enter the wall-mounted air supply mode upon receiving a power-on command, controlling at least a portion of the airflow blown out of the air outlet 100a to flow downwards under the guidance of the air guide surface 120a. Alternatively, the air supply device 100 can include multiple modes, such as a normal air supply mode and a wall-mounted air supply mode. Upon receiving a power-on command, it enters the normal air supply mode, and upon receiving a wall-mounted air supply command, it enters the wall-mounted air supply mode, controlling at least a portion of the airflow blown out of the air outlet 100a to flow downwards under the guidance of the air guide surface 120a.

[0094] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An air supply device, characterized in that, include: The air guide body has an upper part and a lower part; An air supply assembly is disposed on the upper part of the air guide body, and the air supply assembly has an air outlet; The air guide body has an air guide surface extending along the upper to lower direction, and the air supply assembly has at least a wall-mounted air supply state. In the wall-mounted air supply state, at least part of the airflow blown out by the air supply assembly through the air outlet flows downward under the guidance of the air guide surface.

2. The air supply device as described in claim 1, characterized in that, The height of the air guide body is no greater than 1.5 times the displacement of the air supply assembly at the air outlet.

3. The air supply device as described in claim 1, characterized in that, The air outlet is arranged around the air guide body.

4. A space heater, characterized in that, The heater includes a housing assembly, a heating element, and a fan. The housing assembly has an air inlet and an air outlet. The fan drives airflow into the housing assembly through the air inlet and out through the air outlet. The air outlet faces downward. The heating element is placed inside the housing assembly to heat the airflow so that hot air is blown out through the air outlet. The housing assembly also includes a guide surface adjacent to the air outlet. At least a portion of the guide surface extends downward along the air outlet to form a Coanda wall. The Coanda wall is used to guide at least a portion of the hot air blown out of the air outlet downward.

5. The heater as described in claim 4, characterized in that, The housing assembly has a support portion for supporting itself on the placement surface during operation. The Coanda wall extends downward along the air outlet, and at least a portion of the hot air blown out from the air outlet flows toward the lower part of the support portion under the guidance of the Coanda wall.

6. The warm air blower as described in claim 4 or 5, characterized in that, The Coanda wall is a surface exposed to the outside world, and / or the Coanda wall is the outer surface of the housing assembly.

7. The air supply device as described in any one of claims 1 to 3 or the warm air blower as described in any one of claims 4 to 6, characterized in that, The air supply direction at the air outlet is set at a first angle to the air outlet plane, and the first angle is not greater than 90 degrees and not less than 75 degrees.

8. The air supply device or heater as described in claim 7, characterized in that, The air outlet plane extends horizontally.

9. The air supply device as described in any one of claims 1 to 3 or the warm air blower as described in any one of claims 4 to 6, characterized in that, The edge line of the projection surface formed by the air guide surface facing the vertical plane is a straight edge line extending from top to bottom.

10. The air supply device or heater as described in claim 9, characterized in that, The straight edge line is set at a second angle with the horizontal direction, and the second angle is not greater than 90 degrees and not less than 75 degrees; And / or, the straight edge line is set at a third angle with the air supply direction at the air outlet, the third angle being no greater than 180 degrees and no less than 165 degrees.

11. The air supply device as described in any one of claims 1 to 3 or the warm air blower as described in any one of claims 4 to 6, characterized in that, The air guide surface gradually expands in a curve from top to bottom.

12. The air supply device or heater as described in claim 11, characterized in that, The edge line of the projection surface formed by the air guide surface facing the vertical plane is a curved edge line extending from top to bottom. The tangent of the curved edge line near the air outlet is set at a fourth angle with the horizontal direction, and the fourth angle is not greater than 105 degrees and not less than 90 degrees. And / or, the tangent of the edge line of the curve away from the air outlet is set at a fifth angle with the horizontal direction, the fifth angle being no greater than 90 degrees and no less than 75 degrees.

13. An air supply assembly for mounting on the upper part of an air guide body, the air guide body having an air guide surface extending along the upper to lower direction, the air supply assembly having an air outlet, characterized in that, The air supply assembly has at least a wall-mounted air supply state, in which at least a portion of the airflow blown out by the air supply port flows downward under the guidance of the air guide surface.

14. The air supply assembly as claimed in claim 13, characterized in that, The air guide body is a wall, column, or air guide plate.

15. A space heater, characterized in that, Includes an air supply device as claimed in any one of claims 1 to 3 or any one of claims 7 to 12, or an air supply assembly as claimed in any one of claims 13 to 14; The air supply assembly includes a heating structure for heating the airflow within the air supply assembly.

16. The warm air blower as described in claim 15, characterized in that, The heating structure includes a heating element, which is used to heat the airflow in the air supply assembly after generating heat.

17. The heater as described in claim 16, characterized in that, The heating element includes a heating section extending in a horizontal direction and a plurality of fins arranged in a horizontal direction, the fins being fixedly connected to the heating section.

18. The warm air blower as described in claim 15, characterized in that, The air supply assembly also includes an air inlet screen, a fan, and an air supply screen. A receiving cavity is formed between the air inlet screen and the air supply screen, and the heating structure and the fan are located in the receiving cavity.

19. A control method, characterized in that, The control method is used to control an air supply device as claimed in any one of claims 1 to 3 or any one of claims 7 to 12, or to control a warm air blower as claimed in any one of claims 4 to 12, or to control an air supply assembly as claimed in any one of claims 13 to 14, or to control a warm air blower as claimed in any one of claims 15 to 18, the control method comprising: At least a portion of the airflow blown out of the air outlet by the air supply device is controlled to flow downward under the guidance of the air guide surface.

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