Air supply device and control method based on air supply device

Abstract

The invention provides an air supply device and a control method based on the air supply device. The air supply device comprises a temperature measuring part used for detecting the return air temperature of the air supply device. When the return air temperature reaches the first temperature threshold value, the air guide part adjusts the air outlet direction of the air supply device in the first direction away from the return air inlet, so that the suction amount of hot air exhausted from the air outlet and sucked into the return air inlet again is reduced, misjudgment of the temperature measuring part on the return air temperature is prevented, the heating time of the air supply device is shortened, and the comfort level of a user is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electrical equipment, and in particular to an air supply device and a control method based on the air supply device. Background Art

[0002] The air supply device has an air outlet and an air return outlet, wherein the air return outlet is suitable for drawing gas from the external environment into the main body of the air supply device, so as to be filtered, heated, cooled or otherwise processed in the main body before being discharged to the external environment through the air outlet.

[0003] In the use scenario of heating the air in the external environment by the air supply device, the air supply device also has a temperature measuring part and a heating part. The air supply device obtains the return air temperature of the air returned from the return air port to the main body through the temperature measuring part to determine whether the external environment has reached the preset temperature condition. If it is close to or reaches the appropriate temperature condition, the heating power of the heating part will be reduced or the heating will be stopped; otherwise, the heating power of the heating part will be maintained or increased.

[0004] However, in actual application scenarios, if the air outlet of the air supply device faces or is too close to the return air outlet, the return air outlet will inhale a large amount of hot air, thereby increasing the return air temperature obtained by the temperature measurement unit. This will cause the heating unit to reduce the heating power or stop heating when the external environment does not reach the preset temperature condition, thereby extending the heating time and affecting the user experience. Summary of the invention

[0005] In view of the above-mentioned background technical problems, the present disclosure provides an air supply device and a control method of the air supply device to at least partially solve the above-mentioned problems.

[0006] The present disclosure provides an air supply device, comprising: a main body, having a return air port and an air outlet; a heating part, disposed on the main body and configured to heat the air passing through the main body; a temperature measuring part, configured to detect the return air temperature of the air supply device; and an air guide part, communicatively connected to the temperature measuring part and configured to adjust the air outlet direction of the air supply device; wherein, when the return air temperature reaches a first temperature threshold, the air guide part is configured to adjust the air outlet direction to a first direction away from the return air port.

[0007] In some exemplary embodiments, the heating unit is further configured to reduce the heating power, or stop heating, when the return air temperature reaches a second temperature threshold that is higher than the first temperature threshold.

[0008] In some exemplary embodiments, the air guide portion is disposed at the air outlet and has a flow channel connected to the air outlet; the air guide portion is configured to swing between a first position in which the flow channel is close to the return air outlet and a second position in which the flow channel is away from the return air outlet, so as to adjust the air outlet direction between the first position and the second position.

[0009] In some exemplary embodiments, the air supply device has a first mode for causing the air guide portion to swing back and forth between the first position and the second position.

[0010] In some exemplary embodiments, when the return air temperature reaches the first temperature threshold, the air guide portion is further configured to adjust the first position along the first direction.

[0011] In some exemplary embodiments, when the return air temperature reaches the first temperature threshold, the air guide portion is further configured to adjust the second position along the first direction.

[0012] In some exemplary embodiments, when the second position reaches the second extreme position, the second position remains at the second extreme position.

[0013] In some exemplary embodiments, when the first position reaches the first limit position, the first position remains at the first limit position.

[0014] In some exemplary embodiments, the air guide portion is further configured to adjust the first position and / or the second position at a first preset angle.

[0015] In some exemplary embodiments, the air supply device further has a second mode for maintaining the air guide portion in a third position.

[0016] In some exemplary embodiments, when the return air temperature reaches the first temperature threshold, the air guide portion is further configured to adjust the third position along the first direction.

[0017] In some exemplary embodiments, the wind guide portion is further configured to adjust the third position at a second preset angle.

[0018] In some exemplary embodiments, the air supply device has a first operating stage in which the heating unit starts to operate, and a second operating stage in which the heating unit operates for a first preset time period; the temperature measuring unit is configured to detect the return air temperature of the air supply device in the first operating stage and the second operating stage, respectively.

[0019] In some exemplary embodiments, the air supply device also includes: an alarm unit, which is communicatively connected to the temperature measuring unit and is configured to output an alarm signal when the air supply device is in the first operation stage and the return air temperature reaches the first temperature threshold; and / or the heating unit stops operating.

[0020] In some exemplary embodiments, the air guide portion is configured to adjust the air outlet direction according to the return air temperature when the air supply device is in the second operation stage.

[0021] In some exemplary embodiments, when the air supply device is in the second operating stage, the temperature measuring unit is further configured to detect the return air temperature sequentially according to a second preset time period; and / or, when the air supply device is in the second operating stage and the return air temperature reaches the first temperature threshold, the temperature measuring unit is further configured to detect the return air temperature after the heating unit has been running for a third preset time period.

[0022] The present disclosure also provides a control method based on an air supply device, comprising: when the heating part of the air supply device is running, the temperature measuring part of the air supply device obtains the return air temperature of the air supply device; when the return air temperature reaches a first temperature threshold, the air guiding part of the air supply device adjusts the air outlet direction to a first direction away from the return air outlet of the air supply device.

[0023] In some exemplary embodiments, the control method further includes: when the return air temperature reaches a second temperature threshold, the heating unit reduces the heating power, or stops heating.

[0024] In some exemplary embodiments, when the heating part of the air supply device is operating, the temperature measuring part of the air supply device obtains the return air temperature of the air supply device, including: the temperature measuring part obtains the return air temperature of the air supply device in the first operation stage; and the temperature measuring part obtains the return air temperature of the air supply device in the second operation stage; wherein the first operation stage is the stage in which the heating part starts to operate, and the second operation stage is the stage in which the heating part operates for a first preset time period.

[0025] In some exemplary embodiments, when the return air temperature reaches a first temperature threshold, the air guide portion of the air supply device adjusts the air outlet direction toward a first direction away from the return air outlet of the air supply device, including: when the air supply device is in the second operation stage and the return air temperature reaches a first temperature threshold, the air guide portion adjusts the air outlet direction toward a first direction away from the return air outlet of the air supply device.

[0026] In some exemplary embodiments, the air guide portion adjusts the air outlet direction toward a first direction away from the return air outlet of the air supply device, including: the air guide portion is in a first mode in which it swings back and forth between a first position close to the return air outlet and a second position away from the return air outlet; the air guide portion adjusts the first position along the first direction according to a first preset angle; and the air guide portion adjusts the second position along the first direction according to the first preset angle.

[0027] In some exemplary embodiments, the air guide portion adjusts the air outlet direction toward a first direction away from the return air outlet of the air supply device, and also includes: when the first position reaches a first extreme position, the first position remains at the first extreme position; and / or, when the second position reaches the first extreme position, the second position remains at the second extreme position.

[0028] In some exemplary embodiments, the air guide portion adjusts the air outlet direction toward a first direction away from the return air outlet of the air supply device, including: the air guide portion is in a second mode where it is maintained at a third position; and the air guide portion adjusts the third position along the first direction according to a second preset angle.

[0029] In some exemplary embodiments, the control method further includes: when the air supply device is in the first operation stage and the return air temperature reaches a first temperature threshold, the alarm unit of the air supply device outputs an alarm signal; and / or the heating unit stops operating.

[0030] In some exemplary embodiments, the temperature measuring unit obtains the return air temperature of the air supply device in the second operation stage, including: the temperature measuring unit detects the return air temperature sequentially according to a second preset time period; and / or, when the return air temperature reaches the first temperature threshold, the temperature measuring unit detects the return air temperature after the heating unit has been running for a third preset time period.

[0031] Based on the above-mentioned air supply device and the control method based on the air supply device, the temperature measuring unit is used to detect the return air temperature of the air supply device. When the return air temperature reaches a first temperature threshold, the air guide unit adjusts the air outlet direction of the air supply device to a first direction away from the return air port, so as to reduce the amount of hot air discharged from the air outlet and sucked back into the return air port, thereby preventing the temperature measuring unit from misjudging the return air temperature, thereby shortening the heating time of the air supply device and improving the user's comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the present disclosure or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 is a three-dimensional diagram of an air supply device according to an embodiment of the present disclosure;

[0034] Figure 2 for Figure 1 A schematic diagram of a module of an air supply device of the exemplary embodiment shown;

[0035] Figure 3 is a flow chart of a control method based on an air supply device according to an embodiment of the present disclosure;

[0036] Figure 4 for Figure 3 A flow chart of a first embodiment of the control method shown;

[0037] Figure 5 for Figure 3 A flow chart of a second embodiment of the control method shown;

[0038] Figure 6 for Figure 3 A flowchart of a third embodiment of the control method shown;

[0039] Figure 7 for Figure 3 FIG. 1 is a flow chart of a fourth embodiment of a control method shown in FIG.

[0040] Reference numerals

[0041] 100. Air supply device; 101. Main body; 102. Return air outlet; 103. Air outlet; 104. Heating unit; 105. Temperature measuring unit; 106. Air guiding unit; 107. Alarm unit; 108. Control unit; 109. First mask; 110. Second mask. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0043] In the description of the present disclosure, it should be noted that the terms "vertical", "horizontal", "left", "right", "up", "down", "front", "back" and similar expressions are for illustrative purposes only and do not represent the only implementation method.

[0044] Furthermore, the ordinal numbers used in the specification and claims, such as "first", "second", etc., to modify the corresponding elements, do not themselves mean or represent any ordinal number of the element, nor do they represent the order of one element and another element, or the order of manufacturing methods. The use of these ordinal numbers is only used to clearly distinguish a component with a certain name from another component with the same name.

[0045] In addition, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this disclosure can be understood in specific situations.

[0046] Figure 1 It is a three-dimensional diagram of the air supply device according to an embodiment of the present disclosure.

[0047] The present disclosure provides an air supply device 100, such as Figure 1 As shown, it includes a main body 101, a heating part 104, a temperature measuring part 105 and an air guide part 106. The main body 101 has a return air port 102 and an air outlet 103. The heating part 104 is arranged on the main body 101, and is configured to heat the air passing through the main body 101. The temperature measuring part 105 is configured to detect the return air temperature of the air supply device. The air guide part 106 is communicatively connected with the temperature measuring part 105, and is configured to adjust the air outlet direction of the air supply device. Among them, when the return air temperature reaches a first temperature threshold (which can be regarded as the return air temperature being equal to or higher than the first temperature threshold), the air guide part 106 is configured to adjust the air outlet direction to a first direction away from the return air port 102.

[0048] In such an embodiment, the temperature measuring unit 105 is used to detect the return air temperature of the air supply device. When the return air temperature reaches the first temperature threshold, the air guide unit adjusts the air outlet direction of the air supply device to the first direction away from the return air port 102 to reduce the amount of hot air discharged from the air outlet 103 and sucked back into the return air port 102, thereby preventing the temperature measuring unit 105 from misjudging the return air temperature. If a misjudgment occurs, the heating unit 104 will correspondingly reduce the heating power or stop heating. At this time, the return air temperature detected by the temperature measuring unit 105 may be lower than the first temperature threshold, or even lower than the target temperature. For this reason, the heating unit 104 will operate again or even further increase the heating power. When the heating power is increased to a certain extent, the hot air blown out of the air outlet may be sucked into the return air port again, thereby causing repeated misjudgments by the temperature measuring unit, causing the heating unit or the air supply device to repeatedly change the heating power in a short period of time. This will reduce the life of the heating unit or other components, and will also cause users to mistakenly believe that the air supply device has failed, affecting the user's experience.

[0049] In some exemplary embodiments, Figure 1 As shown, the main body 101 includes a housing, a first mask 109 and a second mask 110. In detail, an air duct is provided in the housing, and an air supply unit is provided in the air duct to form a directional airflow in the air duct. Further, the first mask 109 and the second mask 110 are respectively provided with openings, and the first mask 109 and the second mask 110 are respectively provided at the upstream and downstream of the air duct.

[0050] Taking the case where the first mask 109 is disposed upstream of the air duct and the second mask 110 is disposed downstream of the air duct as an example, the opening formed by the first mask 109 is used as the return air port 102 of the main body 101, and the opening formed by the second mask 110 is used as the outlet air port 103 of the main body 101. Similarly, if the first mask 109 is disposed downstream of the second mask 110, the opening of the second mask 110 is used as the return air port 102, and the opening of the first mask 109 is used as the outlet air port 103.

[0051] In some exemplary embodiments, Figure 1 As shown, the basket forms the installation base of the air supply device 100. In detail, the basket includes but is not limited to being constructed as a box-like structure, having a top surface, a bottom surface and four side surfaces located between the top surface and the bottom surface. Among them, the top surface of the basket is the side facing the roof and away from the ceiling, and the bottom surface of the basket is the side facing the ceiling and away from the roof. Furthermore, the bottom surface and / or side surface of the basket are provided with openings, and the openings are connected to the return air port 102 and the air outlet 103 of the air supply device 100 through pipelines.

[0052] In an illustrative embodiment, the air supply unit includes but is not limited to a volute and a motor and a fan blade disposed in the volute. The motor can drive the fan blade to rotate to guide the air outside the air supply device 100 to be sucked into the volute through the return air port 102, and then discharged to the outside of the air supply device 100 through the air outlet 103. Further, the heating unit 104 is disposed between the air supply unit and the air outlet 103 to heat the air passing through the heating unit 104, and the heating unit 104 includes but is not limited to a heating rod, a heating wire or other devices suitable for heating the air.

[0053] In some exemplary embodiments, Figure 1 As shown, the main body 101 is also provided with a shielding portion. In detail, the shielding portion is configured to be movable relative to the return air outlet 102, so as to move between a shielding position for shielding the return air outlet 102, and an open position for at least partially opening the return air outlet 102. Further, the shielding portion can be configured to be adjusted in response to whether the air supply device 100 is in operation, specifically including being kept in the open position when the air supply device 100 is in operation (i.e., the air supply unit is in operation), and being kept in the shielding position when the air supply device 100 stops operating (i.e., the air supply unit stops operating). In this way, the return air outlet 102 can be shielded so that the air supply device 100 is more coordinated with the external environment, thereby being more beautiful overall.

[0054] According to the embodiments of the present disclosure, Figure 1 As shown, the air guide 106 is disposed at the air outlet 103. The air guide 106 has a flow channel connected to the air outlet 103. The air guide 106 is configured to swing between a first position where the flow channel is close to the return air outlet 102 and a second position where the flow channel is away from the return air outlet 102, so as to adjust the air outlet direction between the first position and the second position.

[0055] In some exemplary embodiments, referring to Figure 1 As shown, the air guide 106 is disposed at the air outlet 103 and can move relative to the air outlet 103 so that the airflow discharged through the air outlet has different air outlet directions. In detail, the air guide 106 includes a cover sheet that covers at least a portion of the air outlet 103, and a driving unit that controls the movement of the cover sheet relative to the plane where the air outlet 103 is located. The movement is characterized by the displacement of the cover sheet relative to the plane where the air outlet 103 is located, which can be at least one of horizontal movement, vertical movement, tilt movement and rotation.

[0056] In some exemplary embodiments, referring to Figure 1As shown, the air guide 106 rotates around a fixed axis (such as around the output shaft of the motor, the axis of which extends in a direction perpendicular to the center line connecting the return air port 102 and the air outlet 103) under the action of a driving unit (specifically, a motor, or a motor and a transmission device connected to the output end of the motor). Furthermore, the air guide 106 also includes an air guide sheet arranged on the opposite side of the cover sheet and at a certain distance from the cover sheet, and an air guide rib arranged between the cover sheet and the air guide sheet and connecting the cover sheet and the air guide sheet. The portion between the cover sheet, the air guide rib and the air guide sheet defines the flow channel of the air guide 106.

[0057] In some exemplary embodiments, Figure 1 As shown, the flow channel is approximately in the shape of a rectangular parallelepiped with two sides connected, and the edge of one end of the cover sheet and the air guide sheet forms the air inlet surface of the air guide portion, and the edge of one end on the opposite side forms the air outlet surface of the air guide portion. The air flowing through the air guide portion will be guided to various directions (i.e., the air outlet direction) along the air guide ribs and the air guide sheets. Furthermore, the flow channel swings synchronously with the air guide portion 106 based on the action of the driving portion, so that the air guide portion 106 has a first position in which the flow channel (the air outlet surface) is close to the return air outlet 102 and a second position in which the flow channel (the air outlet surface) is away from the return air outlet 102. It should be understood that the embodiments of the present disclosure are not limited to this.

[0058] For example, the covering sheet may be in a rectangular sheet structure.

[0059] For another example, the covering sheet may also be formed by combining a plurality of sheet-like units, and part or all of the plurality of sheet-like units may be moved or rotated relative to the plane where the air outlet 103 is located under the drive of the driving unit.

[0060] In some exemplary embodiments, Figure 1 As shown, the temperature measuring unit 105 is arranged on the downstream side of the return air port 102, and is used to detect the temperature of the air entering through the return air port 102. In detail, the temperature measuring unit 105 is arranged on the upstream side of the heating unit 104. Further, the air supply device 100 also includes a control unit 108, which is in communication connection with the temperature measuring unit 105, and controls the operation of the air supply device 100 according to the detection result of the temperature measuring unit 105. The control unit 108 includes but is not limited to using a microcontroller (i.e., MCU) or other control devices. Among them, controlling the operation of the air supply device 100 includes but is not limited to controlling the operation of the air supply unit, such as the speed of the motor, and then controlling the air supply speed or air volume of the air supply device, as well as controlling the switch and heating power of the heating unit 104, and the switch and state of the air guide unit 106.

[0061] According to an embodiment of the present disclosure, the air supply device 100 has a first mode in which the air guide portion 106 reciprocates between a first position and a second position.

[0062] In some exemplary embodiments, taking the air guide 106 being swingably arranged at the air outlet 103 as an example, when the air guide 106 is in the first position and the second position, the flow channel of the air guide 106 has different angles relative to the reference plane, so that the air supply device 100 periodically adjusts the air outlet direction. In this way, the air supply device 100 in the first mode is suitable for uniformly supplying air to the use scene (such as a bathroom) in which it is located, so as to quickly increase the ambient temperature of the use scene. Among them, the first position, the second position and the angle formed by the first position relative to the second position include but are not limited to being obtained by using empirical values ​​and / or calculated values.

[0063] For example, in the first mode, the initial first position includes but is not limited to making the angle between the flow channel and the reference plane 60°; the initial second position includes but is not limited to making the angle between the flow channel and the reference plane 120°; the relative angle between the initial first position and the second position is configured to be greater than or equal to 40° (such as the above 60°). It should be understood that the embodiments of the present disclosure are not limited thereto.

[0064] For example, the initial first position can also make the angle between the flow channel and the reference plane 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, 90° or any angle between 0° and 90°.

[0065] For another example, the angle between the flow channel and the reference plane in the initial second position can also be 100°, 110°, 120°, 130°, 140°, 150°, 160°, 170°, 180° and any angle between 90° and 180°, wherein the angle between the flow channel and the reference plane in the second position should always be greater than the angle between the flow channel and the reference plane in the first position.

[0066] According to an embodiment of the present disclosure, when the return air temperature reaches a first temperature threshold, the air guide portion 106 is further configured to adjust a first position along a first direction.

[0067] According to an embodiment of the present disclosure, when the return air temperature reaches a first temperature threshold, the air guide portion 106 is further configured to adjust the second position along the first direction.

[0068] According to an embodiment of the present disclosure, the wind guide portion 106 is further configured to adjust the first position and / or the second position at a first preset angle.

[0069] In some exemplary embodiments, when the return air temperature reaches a first temperature threshold, in order to reduce the amount of hot air exhausted through the air outlet 103 and sucked into the return air outlet 102, the air guide 106 is moved in a first direction (refer to Figure 1 As shown, since the return air outlet 102 is located on the left side of the air outlet 103, the first direction can be regarded as Figure 1of course, if the return air outlet 102 is located on the right side of the air outlet 103, the first direction can be regarded as the clockwise direction) to adjust the first position.

[0070] Continuing with the example of the first mode, the initial first position makes the angle between the flow channel and the reference plane be 60°, and the initial second position makes the angle between the flow channel and the reference plane be 120°. The air guide part adjusts the first position and the second position synchronously along the first direction according to the first preset angle (including but not limited to 10°). For example, the first position can be adjusted to make the angle between the flow channel and the reference plane be 70°, and the second position can be adjusted to make the angle between the flow channel and the reference plane be 130°. In this way, the air guide part 106 can be swung within the range of 70° to 130° so that the angle between the flow channel and the reference plane is 70° to 130°, so that the air outlet direction of the air supply device 100 is away from the return air outlet 102.

[0071] In such an embodiment, the reason why the first position and the second position of the air guide 106 are adjusted synchronously is to maintain the air guide 106 with a sufficiently large air guide range (such as the above-mentioned 60°) so that the hot air can be widely discharged to the use scene to quickly increase the ambient temperature of the use scene. On this basis, the reason why the first position and the second position of the air guide 106 are swung to adjust at a first preset angle is to prevent the difference between the adjusted air outlet direction and the initial air outlet direction when not adjusted from being too large, thereby causing the position in the use scene that should have hot air to suddenly become cold due to the loss of hot air, affecting the user experience. It should be understood that the embodiments of the present disclosure are not limited to this.

[0072] For example, only the first position may be adjusted and the second initial position may be maintained, that is, the air guide portion 106 may be swung within a range where the angle between the flow channel and the reference plane is 70° to 120°. In this way, although the air guide range of the air guide portion 106 is reduced (such as the above 50°), the purpose of making the air outlet direction of the air supply device 100 away from the return air port 102 can still be achieved.

[0073] For another example, the first preset angle may also be configured to be 5°, 10°, 15°, 20° or any other angle.

[0074] According to an embodiment of the present disclosure, when the second position reaches the second limit position, the second position is maintained at the second limit position.

[0075] According to an embodiment of the present disclosure, when the first position reaches the first limit position, the first position is maintained at the first limit position.

[0076] Continuing with the example that in the first mode, the initial first position makes the angle between the flow channel and the reference plane 60°, and the initial second position makes the angle between the flow channel and the reference plane 120°, the second extreme position is further configured to make the angle between the flow channel and the reference plane 130°.

[0077] Among them, the second extreme position can be regarded as the swing limit of the air guide portion 106. If the angle is exceeded (such as 140°), the hot air output through the air outlet 103 will be too close to the second mask 110, which may cause the mask to deform due to heat. In addition, since the hot air rises, if the second extreme position is set too large, it will not be conducive to the diffusion of the hot air.

[0078] When adjusting the first position and the second position for the first time, the first position can be adjusted to make the angle between the flow channel and the reference plane 70°, and the second position can be adjusted to make the angle between the flow channel and the reference plane 130°. When adjusting the first position and the second position again, since the second position is already at the second limit position, only the first position is adjusted to make the angle between the flow channel and the reference plane 80°, and the second position is still maintained at making the angle between the flow channel and the reference plane 130°.

[0079] Furthermore, in order to maintain a sufficiently large air guiding range of the air guide portion 106, the first limit position can be correspondingly set to make the angle between the flow channel and the reference plane 90°, that is, the absolute value of the angle between the first position and the second position is maintained at greater than or equal to 40°. Among them, the first limit position can be regarded as an empirical value and / or a calculated value based on the second limit position and the angle between the first position and the second position. If the first limit position is exceeded, the swing angle of the air guide portion 106 will be too small and cannot cover enough space in the use scenario, thereby extending the heating time of the air supply device, and the reciprocating swing of the air guide portion 106 in a too small range is also prone to generate noise when supplying air. It should be understood that the embodiments of the present disclosure are not limited to this.

[0080] For example, the initial first position and the initial second position may make the relative angle between the flow channel and the reference plane 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, 90° or any other angle.

[0081] According to an embodiment of the present disclosure, the air supply device further has a second mode for keeping the air guide portion 106 at the third position.

[0082] According to an embodiment of the present disclosure, when the return air temperature reaches a first temperature threshold, the air guide portion 106 is further configured to adjust the third position along the first direction.

[0083] According to an embodiment of the present disclosure, the wind guide portion 106 is further configured to adjust the third position at a second preset angle.

[0084] In some exemplary embodiments, the air guide 106 can be directionally maintained in the third position, so that the air supply device 100 can output hot air in a directionally manner for a long time. In this way, the air supply device 100 in the second mode is suitable for outputting hot air to a specific area (such as a shower area) and / or a specific target (such as a user) in the usage scene (such as a bathroom) to quickly heat the specific area and / or specific target.

[0085] For example, in the second mode, the initial third position includes but is not limited to making the angle between the flow channel and the reference plane 60°. It should be understood that the embodiments of the present disclosure are not limited thereto.

[0086] For example, the initial third position can make the angle between the flow channel and the reference plane 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, 90°, 100°, 110°, 120°, 130°, 140°, 150°, 160°, 170°, 180° and any angle between 0° and 180°.

[0087] In the second mode, the initial third position makes the angle between the flow channel and the reference plane 60°. The air guide 106 adjusts the third position according to the second preset angle (including but not limited to 10°). For example, the third position can be adjusted to make the angle between the flow channel and the reference plane 70°. In this way, the air outlet direction of the air supply device 100 is away from the return air port 102.

[0088] Furthermore, the angle between the flow channel and the reference plane at the third position can also be similar to the above embodiment, so as to be limited by the second limit position, thereby avoiding deformation of the mask and facilitating the diffusion of hot air. It should be understood that the embodiments of the present disclosure are not limited thereto.

[0089] For example, the second preset angle may also be configured to be 5°, 10°, 15°, 20°, or any other angle. The second preset angle may be configured to be the same as the first preset angle, or may be configured to be different from the first preset angle.

[0090] According to an embodiment of the present disclosure, the air supply device 100 has a first operation phase in which the heating unit 104 starts to operate, and a second operation phase in which the heating unit 104 operates for a first preset time. The temperature measuring unit 105 is configured to detect the return air temperature of the air supply device in the first operation phase and the second operation phase.

[0091] According to an embodiment of the present disclosure, the air supply device further includes an alarm unit 107. The alarm unit 107 is in communication with the temperature measuring unit 105 and is configured to output an alarm signal and / or stop the heating unit 104 when the air supply device is in the first operation stage and the return air temperature reaches the first temperature threshold.

[0092] In some exemplary embodiments, the air supply device 100 is in the first operation stage according to the state in which the heating unit 104 starts to operate. The state in which the heating unit 104 starts to operate may be that the air supply device 100 directly enters the heating mode in which hot air is generated by the heating unit 104 after being started from the shutdown mode or the standby mode; or, it may be that the air supply device 100 switches to the heating mode in the air supply mode (i.e., the air supply unit is operating, but the heating unit 104 is not operating), which can be regarded as the state in which the heating unit 104 of the air supply device 100 is cold started. Furthermore, the air supply device 100 enters the second operation stage after the heating unit 104 operates for a first preset time, which can be regarded as the state in which the heating unit 104 of the air supply device 100 is stably operating.

[0093] According to an embodiment of the present disclosure, the air guide portion 106 is configured to adjust the air outlet direction according to the return air temperature when the air supply device is in the second operation stage.

[0094] In some illustrative embodiments, the temperature measuring unit 105 detects the return air temperature in both the first operation stage and the second operation stage. If it is detected in the first operation stage that the return air temperature reaches the first temperature threshold, it can be regarded as the heating unit 104 is overheated (such as too high power, or other abnormalities), and then an alarm signal is output; or, the heating unit 104 is stopped; or, both are performed at the same time. Further, if it is detected in the second operation stage that the return air temperature reaches the first temperature threshold, the air outlet direction of the air supply device 100 can be adjusted by the air guide unit 106. The specific method can refer to the above embodiment, and has similar technical effects to the above embodiment, so it will not be repeated here.

[0095] In an exemplary embodiment, the alarm unit 107 includes but is not limited to at least one of a speaker, a lamp, a display, and other devices suitable for broadcasting information. Accordingly, the alarm signal includes but is not limited to being broadcasted by the alarm unit 107 in the form of sound, light, image, etc.

[0096] For example, the alarm unit 107 may be a buzzer to broadcast an alarm signal by sounding a buzzer.

[0097] For another example, the alarm unit 107 may use an LED lamp to broadcast an alarm signal through the light displayed by the LED lamp.

[0098] For another example, the alarm unit 107 may use a display screen to broadcast the alarm signal in the form of images and / or texts displayed on the display screen.

[0099] In another exemplary embodiment, the alarm unit 107 may also use a communication device, such as a wired network, a wireless network, Bluetooth or other communication methods to send an alarm signal to an external terminal (such as a mobile phone, a computer, a tablet computer and other terminals with a display function).

[0100] According to an embodiment of the present disclosure, when the air supply device 100 is in the second operation stage, the temperature measuring unit 105 is further configured to detect the return air temperature sequentially according to the second preset time length. And / or, when the air supply device is in the second operation stage and the return air temperature reaches the first temperature threshold, the temperature measuring unit 105 is further configured to detect the return air temperature after the heating unit 104 runs for a third preset time length.

[0101] In some exemplary implementations, when the air supply device 100 is in the second operation stage, the temperature measuring unit 105 is configured to perform detection sequentially according to a second preset duration. In detail, the air supply device 100 also has a timer, which is connected to the control unit 108 (such as the above-mentioned MCU) for communication, and the control unit 108 outputs a control signal to the temperature measuring unit 105 according to the clock signal of the timer to obtain the return air temperature in a timely manner. The second preset duration includes but is not limited to being configured as 1 minute.

[0102] In such an implementation, the temperature measuring unit 105 can obtain the return air temperature sequentially, that is, the temperature measuring unit 105 detects the return air temperature only when the second preset time is reached to prevent the temperature measuring unit 105 from occupying communication resources by too frequent detection. It should be understood that the embodiments of the present disclosure are not limited thereto.

[0103] For example, the second preset duration can also be configured to be 1 minute, 1.5 minutes, 2 minutes, 2.5 minutes, 3 minutes, 3.5 minutes, 4 minutes, 4.5 minutes, 5 minutes or any other duration.

[0104] In some exemplary embodiments, when the air supply device 100 is in the second operation stage and the return air temperature detected by the temperature measuring unit 105 reaches the first temperature threshold, the temperature measuring unit 105 is further configured to detect the return air temperature again after the heating unit 104 operates for a third preset time. In detail, the third preset time can still be achieved through the communication between the timer and the control unit 108. The third preset time includes but is not limited to being configured as 3 minutes.

[0105] In such an embodiment, when the return air temperature reaches the first temperature threshold, the air guide 106 will adjust the air outlet direction to the first direction accordingly, and when the air outlet direction is away from the return air port 102, the return air temperature will fluctuate. To this end, by maintaining the heating unit 104 for the third preset time before performing the detection, frequent detection of the temperature measuring unit 105 and frequent adjustment of the air guide 106 due to temperature fluctuations can be prevented. It should be understood that the embodiments of the present disclosure are not limited to this.

[0106] For example, the third preset duration can also be configured to be 1 minute, 1.5 minutes, 2 minutes, 2.5 minutes, 3 minutes, 3.5 minutes, 4 minutes, 4.5 minutes, 5 minutes or any other duration.

[0107] According to an embodiment of the present disclosure, the heating unit 104 is further configured to reduce the heating power or stop heating when the return air temperature reaches a second temperature threshold that is higher than the first temperature threshold.

[0108] In some exemplary embodiments, the first temperature threshold and / or the second temperature threshold may be obtained through empirical values ​​and / or calculated values.

[0109] For example, the first temperature threshold includes but is not limited to being configured as 50°C, and the second temperature threshold includes but is not limited to being configured as 53°C.

[0110] In such an implementation, based on the above-mentioned embodiment, when the return air temperature of the air supply device 100 reaches the first temperature threshold, the air guide unit 106 adjusts the air outlet direction to the first direction away from the return air port 102. The amount of air entering the return air port 102 through the hot air output through the air outlet 103 should be reduced accordingly, and the return air temperature detected by the temperature measuring unit 105 at this time should also be reduced accordingly. If the return air temperature is not only stabilized above the first temperature threshold, but also further increases to the second temperature threshold, it can be considered that the increase in the ambient temperature in the use scene has caused the return air temperature to increase. Therefore, it can be regarded as that the air supply device 100 has achieved the purpose of heating the use scene. For this reason, the heating power of the heating unit 104 should be reduced or the heating should be stopped accordingly to prevent the ambient temperature from being too high and causing discomfort to the user.

[0111] Figure 3 The present invention is a flow chart of a control method based on an air supply device according to an embodiment of the present invention.

[0112] The present disclosure also provides a control method based on an air supply device, comprising:

[0113] Step S210: when the heating unit 104 of the air supply device is in operation, the temperature measuring unit 105 of the air supply device acquires the return air temperature of the air supply device;

[0114] Step S220: When the return air temperature reaches a first temperature threshold, the air guide portion 106 of the air supply device adjusts the air outlet direction toward a first direction away from the return air outlet 102 of the air supply device.

[0115] Based on the overall inventive concept of the air supply device 100, the temperature measuring unit 105 of the air supply device 100 is used to detect the return air temperature of the air supply device. When the return air temperature reaches a first temperature threshold, the air guide unit 106 is controlled to adjust the air outlet direction of the air supply device to a first direction away from the return air port 102, so as to reduce the amount of hot air discharged from the air outlet 103 and sucked back into the return air port 102, thereby preventing the temperature measuring unit 105 from misjudging the return air temperature, thereby shortening the heating time of the air supply device 100 and improving the user's comfort.

[0116] According to an embodiment of the present disclosure, the control method further includes:

[0117] Step S230 : when the return air temperature reaches the second temperature threshold, the heating unit 104 reduces the heating temperature of the heating unit 104 .

[0118] In some exemplary embodiments, specific methods for reducing the heating temperature of the heating unit 104 include, but are not limited to, reducing the heating power (or stopping heating), increasing the air flow rate at the air outlet, increasing the air flow rate at the air outlet, and at least one of other methods suitable for reducing the heating temperature of the heating unit 104.

[0119] In such an embodiment, if the return air temperature of the air supply device 100 is further increased from the first temperature threshold to the second temperature threshold, it can be regarded that the air supply device 100 has achieved the purpose of heating the usage scene. For this reason, the heating power of the heating unit 104 should be reduced or the heating should be stopped accordingly to prevent the ambient temperature from being too high and causing discomfort to the user. At the same time, the temperature of the heating unit should be suppressed from being too high due to the high temperature of the air flowing through, thereby reducing the life of the heating unit or causing damage.

[0120] According to an embodiment of the present disclosure, step S210: when the heating unit 104 of the air supply device is running, the temperature measuring unit 105 of the air supply device obtains the return air temperature of the air supply device, including:

[0121] Step S211: the temperature measuring unit 105 obtains the return air temperature of the air supply device in the first operation stage;

[0122] Step S212: The temperature measuring unit 105 obtains the return air temperature of the air supply device in the second operation stage. The first operation stage is the stage when the heating unit 104 starts to operate, and the second operation stage is the stage after the heating unit 104 operates for a first preset time.

[0123] According to an embodiment of the present disclosure, the control method further includes:

[0124] Step S240: When the air supply device is in the first operation stage and the return air temperature reaches the first temperature threshold, the alarm unit 107 of the air supply device outputs an alarm signal; and / or the heating unit 104 stops operating.

[0125] In such an embodiment, if it is detected that the return air temperature reaches the first temperature threshold in the first operation stage, it can be regarded as the heating unit 104 is overheated (such as too high power, or other abnormalities), and an alarm signal is output; or, the heating unit 104 is stopped; or, both are performed simultaneously to prevent the air supply device 100 from overheating and being damaged, or, the user is informed through an alarm signal to prevent a safety hazard from occurring.

[0126] According to an embodiment of the present disclosure, step S212: the temperature measuring unit 105 obtains the return air temperature of the air supply device in the second operation stage, including:

[0127] Step S2121: the temperature measuring unit 105 detects the return air temperature sequentially according to the second preset time period;

[0128] And / or, step S2121: when the return air temperature reaches the first temperature threshold, the temperature measuring unit 105 detects the return air temperature after the heating unit 104 runs for a third preset time.

[0129] In such an embodiment, when the return air temperature reaches the first temperature threshold, the air guide 106 will adjust the air outlet direction to the first direction accordingly, and when the air outlet direction is away from the return air port 102, the return air temperature will fluctuate. To this end, by maintaining the heating unit 104 for the third preset time before performing the detection, frequent detection of the temperature measuring unit 105 and frequent adjustment of the air guide 106 due to temperature fluctuations can be prevented. It should be understood that the embodiments of the present disclosure are not limited to this.

[0130] According to an embodiment of the present disclosure, step S220: when the return air temperature reaches a first temperature threshold, the air guide portion 106 of the air supply device adjusts the air outlet direction toward a first direction away from the return air outlet 102 of the air supply device, including:

[0131] Step S221: when the air supply device is in the second operation stage and the return air temperature reaches the first temperature threshold, the air guide portion 106 adjusts the air outlet direction toward a first direction away from the return air outlet 102 of the air supply device.

[0132] According to an embodiment of the present disclosure, step S221: the air guide portion 106 adjusts the air outlet direction toward a first direction away from the return air outlet 102 of the air supply device, including:

[0133] Step S2211: the air guide portion 106 is in a first mode of reciprocatingly swinging between a first position close to the return air outlet 102 and a second position far from the return air outlet 102;

[0134] Step S2212: the air guide portion 106 is adjusted to a first position along a first direction according to a first preset angle; and

[0135] Step S2213: the air guiding portion 106 is adjusted to a second position along the first direction according to a first preset angle.

[0136] According to an embodiment of the present disclosure, step S221: the air guide portion 106 adjusts the air outlet direction toward a first direction away from the return air outlet 102 of the air supply device, further comprising:

[0137] Step S2214: when the first position reaches the first limit position, the first position remains at the first limit position;

[0138] And / or, step S2215: when the second position reaches the first limit position, the second position remains at the second limit position.

[0139] In such an embodiment, the reason for synchronously adjusting the first position and the second position of the air guide portion 106 is to maintain the air guide portion 106 with a sufficiently large air guide range (such as the 60° mentioned above) so that the hot air can be widely discharged to the usage scene to quickly increase the ambient temperature of the usage scene.

[0140] In addition, the reason why the first position and the second position of the air guide part 106 are adjusted to the first preset angle is to prevent the air outlet direction after adjustment from being too different from the initial air outlet direction before adjustment, thereby causing the position that should have hot air in the usage scenario to suddenly become cold due to the loss of hot air, affecting the user experience.

[0141] According to an embodiment of the present disclosure, step S221: the air guide portion 106 adjusts the air outlet direction toward a first direction away from the return air outlet 102 of the air supply device, further comprising:

[0142] Step S2216: the air guide portion 106 is in the second mode of being maintained at the third position; and

[0143] Step S2217: the air guiding portion 106 is adjusted to a third position along the first direction according to the second preset angle.

[0144] In such an embodiment, the air supply device 100 in the second mode is suitable for outputting hot air to a specific area (such as a shower area) and / or a specific target (such as a user) in the usage scenario (such as a bathroom) to quickly heat the specific area and / or the specific target.

[0145] Figure 4 for Figure 3 FIG. 1 is a flow chart of a first embodiment of a control method shown in FIG.

[0146] The present disclosure is described in detail below with reference to the first embodiment. Figure 4 As shown, including:

[0147] Step S301: the heating unit starts to operate, and the air supply device enters the first operation stage;

[0148] In this step, the air supply unit and the heating unit start to operate at a preset gear under the control of the control unit, so that the air supply device is in the first operation stage. The air in the use scene of the air supply device is sucked in from the return air port under the action of the air supply unit, flows through the temperature measuring unit, and is heated by the heating unit. Then, it is blown out to the downstream of the air outlet under the guidance of the air guide unit. In this way, warm air (i.e., hot air) is delivered to the use scene, thereby increasing the ambient temperature of the use scene.

[0149] Step S302: determining whether the return air temperature reaches a first temperature threshold (ie, H≥H1, or H

[0150] In this step, when the heating unit starts to operate, the heating unit begins to gradually heat up, thereby heating the air flowing through. At this time, the heating power of the heating unit has not yet stabilized, and the return air temperature has not yet reached stability. In other words, the detection of the return air temperature when the heating unit just starts to operate is not representative. For this reason, the first preset time can be divided into a first sub-preset time and a second sub-preset time. After the temperature measuring unit waits for the heating unit to operate for the first sub-preset time (i.e., enters the second sub-preset time), the heating unit can be regarded as being in a relatively stable operating state. This can reduce the possibility of errors and misjudgments in the above temperature comparison results due to the unstable heating power of the heating unit causing the return air temperature to be unstable.

[0151] For example, if the first preset time (ie, T1) is configured as 20 minutes, the first sub-preset time can be configured as 5 minutes, and correspondingly, the second sub-preset time can be configured as 15 minutes. Furthermore, the first temperature threshold can be configured as 50°C.

[0152] Step S303: further determining whether the heating unit has been running for a first preset time (ie, T≥T1, or T<T1);

[0153] In this step, after the heating part runs for the first preset time (such as 20 minutes as mentioned above, that is, T1=20 minutes), the heating part can be regarded as being in a relatively stable heating state. For this reason, the air supply device can be divided into the first operation stage and the second operation stage.

[0154] Step S304: when the return air temperature reaches a first temperature threshold and the heating unit has not been running for a first preset time (i.e., H≥H1 and T<T1), the alarm unit sends an alarm signal and / or the heating unit stops running;

[0155] In this step, since the air supply device is in the first operation stage, the heating power of the heating unit is still in a gradually increasing fluctuating state. At this time, the possibility that the ambient temperature rises to the first temperature threshold (ie, H1) in a short time is small.

[0156] If the return air temperature reaches the first temperature threshold before the heating unit reaches the first operating time, it can be considered that the air supply device has an abnormality, such as the heating unit gear is too high (the heating power of the heating unit is too large); or the air outlet air guide; or the return air outlet cover cannot be opened. This type of abnormality is mainly caused by the inability to smoothly inhale or blow out air, which will increase the return air temperature upstream of the heating unit, thereby further causing damage to the heating unit or other internal components of the air supply device.

[0157] ​Therefore, when the return air temperature reaches the first temperature threshold (i.e. H≥H1, H1=50°C), the heating unit can be controlled to stop running and send out an alarm signal (i.e. a signal indicating an abnormality), thereby reducing the possibility of component damage or even other safety problems caused by abnormalities in the air supply device.

[0158] Step S305: when the return air temperature does not reach the first temperature threshold and the heating unit operates for the first preset time (i.e., H

[0159] In this step, when the air supply device is in the second operation stage, the air in the use scene enters the main body (such as a basket) through the return air port, is blown to the air outlet under the guidance of the air supply unit, and flows through the temperature measuring unit located on the upstream side of the heating unit, and is then heated by the heating unit and blown to the downstream side of the air outlet. Therefore, the hot air output from the air outlet may interfere with the return air temperature, so the return air temperature at this time should be detected and judged.

[0160] Step S306: when the return air temperature does not reach the first temperature threshold (ie, H

[0161] In this step, the heat exchange between the hot air output from the air outlet and the air in the use scene is a relatively slow process. Therefore, if the temperature measuring unit is configured to continuously detect the return air temperature, it will occupy too many communication resources and computing resources of the air supply device. For this reason, configuring the temperature measuring unit to detect the return air temperature in a timed manner can reduce the occupation of communication resources and computing resources. Among them, the second preset time length can be 1 minute (that is, T2=1 minute), even if the temperature measuring unit periodically obtains the return air temperature at a frequency of 1 minute.

[0162] Step S307: when the return air temperature reaches a first temperature threshold (ie, H≥H1), the air guide portion adjusts the air outlet direction along a first direction.

[0163] In this step, when the return air temperature is greater than a preset threshold value (i.e., H≥H1, H1=50°C), the air guide unit adjusts the air outlet direction of the air supply device in a first direction away from the return air outlet to reduce the amount of hot air discharged from the air outlet that is re-inhaled by the return air outlet, thereby preventing the temperature measuring unit 105 from misjudging the return air temperature.

[0164] Figure 5 for Figure 3 FIG. 1 is a flow chart of a second embodiment of a control method shown in FIG.

[0165] The present disclosure will be described in detail with reference to the second embodiment. Figure 5 As shown, including:​​

[0166] Step S401: the heating unit operates for a first preset time, and the air supply device is in a second operation stage;

[0167] Step S402: When the return air temperature does not reach the first temperature threshold and the heating unit operates for the first preset time (i.e., H

[0168] In this step, when the air supply device is in the second operation stage, the air in the use scene enters the main body (such as a basket) through the return air port, is blown to the air outlet under the guidance of the air supply unit, and flows through the temperature measuring unit located on the upstream side of the heating unit, and is then heated by the heating unit and blown to the downstream side of the air outlet. Therefore, the hot air output from the air outlet may interfere with the return air temperature, so the return air temperature at this time should be detected and judged.

[0169] Step S403: when the return air temperature does not reach the first temperature threshold (ie, H

[0170] In this step, the heat exchange between the hot air output from the air outlet and the air in the use scene is a relatively slow process. Therefore, if the temperature measuring unit is configured to continuously detect the return air temperature, it will occupy too many communication resources and computing resources of the air supply device. For this reason, configuring the temperature measuring unit to detect the return air temperature in a timed manner can reduce the occupation of communication resources and computing resources. Among them, the second preset time length can be 1 minute (that is, T2=1 minute), even if the temperature measuring unit periodically obtains the return air temperature at a frequency of 1 minute.

[0171] Step S404: when the return air temperature reaches a first temperature threshold (ie, H≥H1), further determining that the air supply device is in the first mode;

[0172] In this step, it is determined whether the air supply device is in a first mode in which the air guide portion swings between the first position and the second position, or in a second mode in which the air guide portion remains in the third position, so as to adapt to different usage requirements of the user.

[0173] Step S405: when the air supply device is in the second mode, adjusting the third position of the air guide portion in the second mode;

[0174] In this step, if the air supply device is in the second mode, the third position of the air guide portion is adaptively adjusted so that the air outlet direction of the air supply device is directed away from the return air outlet.

[0175] ​​Step S406: when the air supply device is in the first mode, further determining whether the second position of the air guide portion reaches the second limit position;

[0176] In this step, if the air supply device is in the first mode, the air guide part is swung between a first initial position and a second initial position. The first initial position and the second initial position can be obtained by empirical values. For example, the first initial position can be a position where the angle between the air duct and the reference plane is 60°, and the second initial position can be a position where the angle between the air duct and the reference plane is 120°.

[0177] On this basis, this step also determines the second initial position to determine whether the second initial position reaches the second limit position.

[0178] Step S407: When the air guide portion has not reached the second limit position, adjusting the second position according to the second preset angle;

[0179] In this step, if the second initial position does not reach the second limit position (such as 130°), the second initial position is adjusted to a new second position at a first preset angle (such as 10°).

[0180] Step S408: when the air guide portion reaches the second limit position, maintaining the second position at the second limit position;

[0181] In this step, if the second initial position reaches the second extreme position, the air guide portion is maintained at the second initial position (i.e., the second extreme position) to prevent excessive hot air from facing the mask, causing deformation of the mask and reducing the heating efficiency.

[0182] Step S409: when the air supply device is in the first mode, further determining whether the first position of the air guide portion reaches the first limit position;

[0183] In this step, the first extreme position includes but is not limited to being obtained based on the second extreme position, that is, a sufficiently large swing range (such as 40°) should be maintained between the first extreme position and the second extreme position. For example, if the second extreme position is configured to be 130°, the corresponding first extreme position is set to 90°.

[0184] On this basis, if the air guide range formed by the first position and the second position is too small (such as less than 40°), the air guide part will swing repeatedly in a very small range, thereby losing the effect of the first mode, and as the swing frequency increases, noise will be generated when supplying air.

[0185] Step S410: When the air guide portion has not reached the first limit position, adjusting the first position according to a first preset angle;

[0186] In this step, if the first initial position does not reach the first limit position, the first initial position is adjusted to a new first position at a first preset angle (such as 10°).

[0187] Step S411: when the air guide portion reaches the first limit position, maintaining the first position at the first limit position;

[0188] In this step, if the first initial position reaches the first extreme position, the air guide portion is kept at the first initial position (ie, the first extreme position) to maintain a larger swing range of the air guide portion.

[0189] It should be noted that, in the second embodiment, the steps for how the air supply device enters the second operation stage can be implemented according to the first embodiment, and therefore, they will not be described in detail.

[0190] Figure 6 for Figure 3 FIG. 1 is a flow chart of a third embodiment of a control method shown in FIG.

[0191] The present disclosure is described in detail below with reference to the third embodiment. Figure 6 As shown, including:

[0192] Step S501: the air guide portion is in the second mode;

[0193] In this step, if the air supply device is in the second mode, the air guide portion is maintained at a third initial position, and the third initial position can be obtained by an empirical value. For example, the third initial position can be a position where the angle between the air duct and the reference plane is 60°, thereby outputting hot air in a direction to a specific area (such as a shower area) and / or a specific target (such as a user).

[0194] Step S502: when the air supply device is in the second mode, further determining whether the second position of the air guide portion reaches the second limit position;

[0195] In this step, it is necessary to determine whether the third initial position reaches the second limit position. The reason is similar to that of the second embodiment, and therefore, it will not be described in detail.

[0196] Step S503: When the air guide portion has not reached the third limit position, adjusting the third position according to the second preset angle;

[0197] In this step, if the third initial position does not reach the second limit position (such as 130°), the third initial position is adjusted to a new second position at a second preset angle (such as 10°).

[0198] Step S504: when the air guide portion reaches the third limit position, maintaining the third position at the third limit position.

[0199] In this step, if the third initial position reaches the second limit position, the air guide portion is maintained at the third initial position (i.e., the second limit position) to prevent excessive hot air from facing the mask, causing deformation of the mask and reducing the heating efficiency.

[0200] Figure 7 for Figure 3 FIG. 1 is a flow chart of a fourth embodiment of a control method shown in FIG.

[0201] The present disclosure will be described in detail with reference to the fourth embodiment. Figure 6 As shown, including:

[0202] Step S601: The heating unit operates for a first preset time period;

[0203] Step S602: determining whether the air supply device is in the first mode;

[0204] Step S603: the air supply device adjusts the first position and / or the second position of the air guide portion in the first mode;

[0205] In step S601 and step S602, the determination of whether the air supply device is in the first mode and the manner of adjusting the first position and / or the second position in the first mode are similar to those of the second embodiment described above, and therefore are not described in detail.

[0206] Step S604: the air supply device adjusts the third position of the air guide portion in the second mode;

[0207] In this step, the adjustment of the third position when the air supply device is in the second mode is similar to that of the third embodiment described above, and therefore, it will not be described in detail.

[0208] Step S605: operating the heating unit for a third preset time period (T≥T3);

[0209] In this step, after the air guide portion is adjusted for the first time (such as the first adjustment of the first position, the second position and the third position), the air guide portion is kept at the current position, and the heating power of the heating portion is kept for a third preset time period. The third preset time period may be 3 minutes.

[0210] Step S606: further determine whether the return air temperature of the air supply device reaches a second temperature threshold (ie, H≥H2, H2=53°C), and when the second temperature threshold is not reached, return to step S602 to further adjust the air guide part.

[0211] In this step, after the air guide part is adjusted for the first time, for example, after adjusting from 60° to 70°, the air supply direction of the air guide part is farther away from the return air outlet than before the adjustment (compared to at least one of the first initial position, the second initial position and the third initial position mentioned above). At this time, most of the hot air blown out from the air guide part is output to the use scene, thereby reducing the impact on the temperature measuring part due to being re-inhaled into the return air outlet.

[0212] However, as the running time increases, the air environment in the use scene transfers heat with the hot air, thereby increasing the ambient temperature of the use scene. At this time, the air with a higher temperature in the use scene is sucked into the return air port, and then heated by the heating unit to become higher temperature air. For example, the air in the use scene is heated by the heating unit from 35°C to 38°C, and then blown out from the air guide again. At this time, since the temperature of the blown air is higher than the temperature before the angle of the air guide is adjusted, part of the air blown out from the air guide rises and may be sucked into the return air port again. For this reason, the air guide needs to be adjusted again when the return air temperature does not reach the second temperature threshold.

[0213] In the control method of this embodiment, after the air guide is adjusted to the side away from the return air outlet, the current air supply angle is maintained to the third preset time (i.e., T3, T3=3 minutes), and the temperature measuring unit detects the current return air temperature again. When the return air temperature is greater than or equal to the first temperature threshold (i.e., H1, H1=50°C), and the return air temperature is less than the second temperature threshold (i.e., H2, H2=53°C), it returns to step S602 again to readjust the air guide, so that the hot air blown out by the air guide continues to swing in the first direction away from the return air outlet.

[0214] After that, after maintaining the current operation state for the third preset time (i.e., 3 minutes), the temperature measuring unit detects the current return air temperature H, compares H with the second temperature threshold H2, and when H<H2, the control unit again determines that the air supply device is currently in the first mode or the second mode, and adjusts the air guide unit again according to the first preset angle or the second preset angle (such as adjusting from 70° to 80°), and so on, until the second temperature threshold is reached and enters step S607. In other words, the air guide unit determines the return air temperature and adjusts a certain angle at a certain interval, rather than adjusting to a fixed position at one time.

[0215] On the other hand, since the air guide is adjusted gradually instead of a one-time large adjustment, it can prevent the wind direction from changing too much due to a sudden large adjustment of the air guide, so that there is no warm air at the position where the hot air is originally blown out, reducing the user's comfort. In addition, when the air guide is adjusted to a certain position, although frequent adjustments of the air guide can be avoided in a short period of time, the air supply angle is too far away from the user's use area, which may reduce the overall heating efficiency of the use scene.

[0216] Step S607: when the return air temperature of the air supply device reaches the second temperature threshold, the heating unit is caused to reduce the heating power or stop heating; and when the return air temperature does not reach the second temperature threshold, return to step S602 until the return air temperature reaches the second temperature threshold;

[0217] In this step, when the temperature measuring unit detects that the return air temperature is greater than the second temperature threshold (i.e., H≥H2), the air supply device is controlled to reduce the heating power of the heating unit or stop heating (i.e., enter the temperature protection mode). In this way, damage to components in the air supply device or other safety problems caused by excessive temperature can be suppressed.

[0218] It should be noted that, in the fourth embodiment, the steps for how the air supply device enters the second operation stage can be implemented according to the first embodiment, and therefore, they are not described in detail.

[0219] So far, the embodiments of the present disclosure have been described in detail in conjunction with the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the present disclosure.

[0220] It should be noted that the implementation methods not shown or described in the drawings or the text of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of each element are not limited to the various specific structures and shapes mentioned in the embodiments, and ordinary technicians in the field can simply change or replace them.

[0221] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. An air supply device, characterized in that: include: The main body has an air return port and an air outlet; a heating portion, disposed on the main body portion and configured to heat air passing through the main body portion; a temperature measuring unit configured to detect the return air temperature of the air supply device; as well as An air guide unit, which is in communication with the temperature measuring unit and is configured to adjust the air outlet direction of the air supply device; Wherein, when the return air temperature reaches a first temperature threshold, the air guide portion is configured to adjust the air outlet direction toward a first direction away from the return air port.

2. The air supply device according to claim 1, characterized in that: The heating unit is further configured to reduce a heating temperature of the heating unit when the return air temperature reaches a second temperature threshold that is higher than the first temperature threshold.

3. The air supply device according to claim 1 or 2, characterized in that: The air guide portion is arranged at the air outlet and has a flow channel connected to the air outlet; The air guide portion is configured to swing between a first position where the flow channel is close to the return air outlet and a second position where the flow channel is away from the return air outlet, so as to adjust the air outlet direction between the first position and the second position.

4. The air supply device according to claim 3, characterized in that: The air supply device has a first mode for causing the air guide portion to reciprocate between the first position and the second position.

5. The air supply device according to claim 4, characterized in that: When the return air temperature reaches the first temperature threshold, the air guide portion is further configured to adjust the first position along the first direction.

6. The air supply device according to claim 4, characterized in that: When the return air temperature reaches the first temperature threshold, the air guide portion is further configured to adjust the second position along the first direction.

7. The air supply device according to claim 6, characterized in that: When the second position reaches the second extreme position, the second position is maintained at the second extreme position.

8. The air supply device according to claim 6 or 7, characterized in that: When the first position reaches a first limit position, the first position is maintained at the first limit position.

9. The air supply device according to claim 8, characterized in that: The wind guide portion is further configured to adjust the first position and / or the second position at a first preset angle.

10. The air supply device according to claim 3, characterized in that: The air supply device further has a second mode for maintaining the air guide portion at a third position.

11. The air supply device according to claim 10, characterized in that: When the return air temperature reaches the first temperature threshold, the air guide portion is further configured to adjust the third position along the first direction.

12. The air supply device according to claim 11, characterized in that: The wind guide portion is further configured to adjust the third position at a second preset angle.

13. The air supply device according to claim 1, characterized in that: The air supply device has a first operation stage for starting the operation of the heating part, and a second operation stage for operating for a first preset time period; The temperature measuring unit is configured to detect the return air temperature of the air supply device in the first operation stage and the second operation stage respectively.

14. The air supply device according to claim 13, characterized in that: Also includes: an alarm unit, which is in communication with the temperature measuring unit and is configured to output an alarm signal when the air supply device is in the first operation stage and the return air temperature reaches the first temperature threshold; And / or, the heating unit stops operating.

15. The air supply device according to claim 13, characterized in that: The air guide portion is configured to adjust the air outlet direction according to the return air temperature when the air supply device is in the second operation stage.

16. The air supply device according to any one of claims 13 to 15, characterized in that: When the air supply device is in the second operation stage, the temperature measuring unit is further configured to sequentially detect the return air temperature according to a second preset time length; And / or, when the air supply device is in the second operation stage and the return air temperature reaches the first temperature threshold, the temperature measuring unit is further configured to detect the return air temperature after the heating unit operates for a third preset time period.

17. A control method for an air supply device according to any one of claims 1 to 16, characterized in that: include: When the heating unit of the air supply device is in operation, the temperature measuring unit of the air supply device acquires the return air temperature of the air supply device; When the return air temperature reaches a first temperature threshold, the air guide portion of the air supply device adjusts the air outlet direction toward a first direction away from the return air outlet of the air supply device.

18. The control method according to claim 17, characterized in that: Also includes: When the return air temperature reaches a second temperature threshold, the heating unit reduces the heating power or stops heating.

19. The control method according to claim 17 or 18, characterized in that: When the heating unit of the air supply device is in operation, the temperature measuring unit of the air supply device obtains the return air temperature of the air supply device, including: The temperature measuring unit acquires the return air temperature of the air supply device in the first operation stage; and The temperature measuring unit obtains the return air temperature of the air supply device in the second operation stage; The first operation stage is a stage in which the heating unit starts to operate, and the second operation stage is a stage in which the heating unit operates for a first preset time period.

20. The control method according to claim 19, characterized in that: When the return air temperature reaches a first temperature threshold, the air guide portion of the air supply device adjusts the air outlet direction toward a first direction away from the return air outlet of the air supply device, including: When the air supply device is in the second operation stage and the return air temperature reaches a first temperature threshold, the air guide portion adjusts the air outlet direction toward a first direction away from the return air outlet of the air supply device.

21. The control method according to claim 20, characterized in that: The air guide portion adjusts the air outlet direction toward a first direction away from the air return port of the air supply device, including: The air guide portion is in a first mode in which it swings back and forth between a first position close to the return air outlet and a second position far from the return air outlet; The air guide portion adjusts the first position according to a first preset angle along the first direction; and The air guide portion adjusts the second position along the first direction according to the first preset angle.

22. The control method according to claim 21, characterized in that: The air guide portion adjusts the air outlet direction toward a first direction away from the air return port of the air supply device, and further includes: When the first position reaches a first limit position, the first position remains at the first limit position; And / or, when the second position reaches the first limit position, the second position remains at the second limit position.

23. The control method according to claim 20, characterized in that: The air guide portion adjusts the air outlet direction toward a first direction away from the air return port of the air supply device, including: The air guide portion is in a second mode where it is maintained at a third position; and The air guide portion adjusts the third position along the first direction according to a second preset angle.

24. The control method according to any one of claims 20 to 23, characterized in that: Also includes: When the air supply device is in the first operation stage and the return air temperature reaches a first temperature threshold, the alarm unit of the air supply device outputs an alarm signal; And / or, the heating unit stops operating.

25. The control method according to claim 19, characterized in that: The temperature measuring unit obtains the return air temperature of the air supply device in the second operation stage, including: The temperature measuring unit detects the return air temperature sequentially according to a second preset time period; And / or, when the return air temperature reaches the first temperature threshold, the temperature measuring unit detects the return air temperature after the heating unit has been running for a third preset time period.

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