Warm air structure, hot and cold switching type heater and hot and cold air switching method

Abstract

The present invention relates to the technical field of heaters, and in particular to a warm air structure, a hot and cold switching heater, and a hot and cold air switching method. A warm air structure comprises: a switching motor; a heating element assembly, one end of which is provided with a rotating part connected to the switching motor; a connecting seat, provided with a guide groove; and a swing blade, provided with a first connecting shaft hinged on the rotating part, and a second connecting shaft inserted in the guide groove. In this solution, the switching motor drives the heating element assembly to rotate, so that the heating element assembly can swing to a certain angle, and then the heating element assembly can enter or leave the air outlet, so as to respectively realize the switching of the warm air working mode and the cold air working mode of the heater, and avoid the heating element assembly blocking the air outlet and affecting the cold air outlet effect. The switching of the two states of the swing blade can be realized without a reset torsion spring, the switching effect is reliable and not easy to damage, the installation difficulty is low, the cost is low and it is easy to maintain, which effectively solves the adverse effects of the reset torsion spring in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of air heaters, and in particular to a warm air structure, a cold / hot switchable air heater, and a cold / hot air switching method. Background Art

[0002] The household heaters on the market now have both cold and warm modes, but when the cold air mode is turned on in the hot summer, the wind speed and air volume of the machine will be very small, because the internal heating components block the blowing effect of the heater, so it cannot meet the user's needs for use all year round. In this regard, the Chinese invention patent with publication number CN216244675U (hereinafter referred to as Document 1) discloses a warm air component and a cold and warm air blower using the warm air component. By rotating the rotating bracket 2, the heating element 1 blocks the air outlet 13 or separates from the air outlet 13. When the heating element 1 blocks the air outlet 13, it is in the warm air working state, and when the heating element 1 separates from the air outlet 13, it is in the cold air working state. In this way, the cold air mode will not be blocked by the heating element 1 at the air outlet 13, thereby improving the blowing effect in the cold air mode.

[0003] However, the solution of Document 1 still has the following shortcomings: since the air duct guide plate 7 also needs to be swung and reset (see paragraph

[0036] of the specification of Document 1) to adapt to the two working modes of cold air and warm air respectively, the air duct guide plate 7 needs to rely on the reset torsion spring 8 to achieve the switching between the two modes. The torsion spring will gradually fatigue and lose its elasticity during frequent use, resulting in a weakened reset effect, making it impossible for the air duct guide plate 7 to effectively fit on the inner wall of the air outlet or stay in the predetermined position, thereby affecting the blowing effect. In addition, it is difficult to install, easy to wear, has a high manufacturing cost and is not easy to repair. Summary of the invention

[0004] The purpose of the present invention is to provide a warm air structure, a hot and cold switchable heater and a hot and cold air switching method to address the deficiencies in the prior art, and to solve the adverse effects caused by the reset torsion spring.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: A warm air structure, comprising:

[0006] Switching motors;

[0007] The heating element assembly has a rotating portion connected to the switching motor at one end;

[0008] A connecting seat having a guide groove; and

[0009] The swing blade is provided with a first connecting shaft hinged on the rotating part and a second connecting shaft inserted in the guide groove;

[0010] The guide groove is an arc-shaped rail guide groove, and the two ends respectively have a first limit point and a second limit point for limiting the second connecting shaft, and the warm air structure satisfies the following formula 1:

[0011]

[0012] In formula 1, a represents the distance between the first connecting axis and the second connecting axis; c represents the distance between the first connecting axis and the rotating axis of the heating element assembly; b1 represents the distance between the second connecting axis and the rotating axis of the heating element assembly when the second connecting axis is at the first limit point; α represents the angle between a and c when the second connecting axis is at the first limit point; b2 represents the distance between the second connecting axis and the rotating axis of the heating element assembly when the second connecting axis is at the second limit point; β represents the angle between a and c when the second connecting axis is at the first limit point.

[0013] As a further solution of the present invention: the rotary part is provided with a first connecting shaft end connected to the rotating shaft of the switching motor, and a second connecting shaft end hinged to the first connecting shaft. Specifically, the two states of the swing blade can be switched without a reset torsion spring, the switching effect is reliable and not easy to damage, the installation difficulty is low, the cost is low and the maintenance is easy, which effectively solves the adverse effects caused by the reset torsion spring in the prior art.

[0014] As a further solution of the present invention: a limiter is also provided on the swing blade for rotating the swing blade to a predetermined angle. Specifically, the swing blade can be rotated to a predetermined angle in the cold air working mode to prevent the swing blade from rotating too much and affecting the wind guiding effect of the cold air outlet. Furthermore, the swing blade can be switched between two states without the need for a reset torsion spring, and the switching effect is reliable and not easy to damage, with low installation difficulty, low cost and easy maintenance, which effectively solves the adverse effects caused by the reset torsion spring in the prior art.

[0015] As a further solution of the present invention: the heating element assembly includes a rotating frame and a heating element mounted on the rotating frame, and the rotating portion is arranged at one end of the rotating frame;

[0016] The limiting part is arranged on the first connecting shaft, and the rotating frame is provided with a resisting position resisted by the limiting part. Specifically, the limiting part resists against the resisting position on the rotating frame, thereby limiting the maximum angle or the predetermined angle of the swing blade, so as to achieve the best wind guiding effect of the swing blade at the air outlet. Furthermore, the swing blade can be switched between two states without the need for a reset torsion spring, the switching effect is reliable and not easy to damage, the installation difficulty is low, the cost is low and the maintenance is easy, and the adverse effects caused by the reset torsion spring in the prior art are effectively solved.

[0017] As a further solution of the present invention: the guide groove is a waist-shaped groove. When the heating element assembly swings or rotates, the second connecting shaft of the swing blade moves along the guide groove of the connecting seat, and when the second connecting shaft moves to either end of the guide groove, if the heating element assembly continues to move, the swing blade will rotate relative to the heating element assembly with the first connecting shaft as the rotating shaft, so that the swing blade can switch between swinging and resetting, so that the swing blade can adapt to the two working modes of cold air and warm air respectively. Furthermore, the swing blade can switch between two states without the need for a reset torsion spring, the switching effect is reliable and not easy to damage, the installation difficulty is low, the cost is low and it is easy to maintain, which effectively solves the adverse effects of the reset torsion spring in the prior art.

[0018] As a further solution of the present invention: the connecting seat is provided with a motor accommodating cavity, and the switching motor is installed in the motor accommodating cavity.

[0019] As a further solution of the present invention: a wire management plate is provided at the bottom of the heating element assembly, and the wire management plate is provided with a wire management groove.

[0020] As another solution of the present invention: a hot and cold switching heater, comprising:

[0021] A housing having an air outlet;

[0022] A wind wheel component is installed in the housing;

[0023] A wind rotor motor drives the wind rotor member to rotate; and

[0024] The warm air structure is installed on the shell and is the warm air structure described in any one of the above items, wherein the switching motor is used to drive the heating element component to enter and / or leave the air outlet.

[0025] As a further solution of the present invention: a short air guide wall and a long air guide wall are respectively provided on both sides of the outside of the air outlet, and a storage position adjacent to one side of the short air guide wall is also provided on the shell, and a switching motor is used to drive the heating element assembly to move between the air outlet and the storage position.

[0026] As a further solution of the present invention: the swing blade is arranged on a side of the heating element assembly close to the wind guide long wall, and the swing blade has an abutting surface and an wind guide surface.

[0027] As a further solution of the present invention: a method for switching between cold and warm air comprises the following steps:

[0028] Switching step: driving the rotating part of the heating element assembly to rotate by switching the motor, so that the heating element assembly can enter or leave the air outlet of the heater;

[0029] The swing blade adjustment step: when the heating element assembly rotates, the swing blade rotates around the first connecting shaft and relative to the rotating part, and the second connecting shaft moves along the arc-shaped rail guide groove provided with the first limiting point and the second limiting point to switch the two states of the swing blade;

[0030] Warm air mode steps: When the heating element assembly enters the air outlet, the wind wheel motor drives the wind wheel to rotate, and the generated wind blows out warm air through the heating element assembly, and the swing blades fit the long wind guide wall of the air outlet to avoid air leakage;

[0031] Cold air mode steps: when the heating element assembly leaves the air outlet and enters the storage position, the swing blade moves along the arc-shaped rail guide groove through the second connecting shaft and rotates to a predetermined angle, and forms a cold air guide port with the wind guide long wall, so that the cold air generated by the wind wheel component can be blown farther and more powerfully;

[0032] Limiting step: Use formula 1 to make the moving track of the second connecting axis accurate to avoid jamming and abnormal noise in the heating element component during the switching process;

[0033] Formula 1:

[0034] In formula 1, a represents the distance between the first connecting axis and the second connecting axis; c represents the distance between the first connecting axis and the rotating axis of the heating element assembly; b1 represents the distance between the second connecting axis and the rotating axis of the heating element assembly when the second connecting axis is at the first limit point; α represents the angle between a and c when the second connecting axis is at the first limit point; b2 represents the distance between the second connecting axis and the rotating axis of the heating element assembly when the second connecting axis is at the second limit point; β represents the angle between a and c when the second connecting axis is at the first limit point.

[0035] Beneficial effects of the present invention:

[0036] In this solution, the heating element assembly is driven to rotate by a switching motor, so that the heating element assembly can swing to a certain angle, thereby enabling the heating element assembly to enter or leave the air outlet, so as to respectively switch between the warm air working mode and the cold air working mode of the heater, and avoid affecting the cold air outlet effect due to the heating element assembly blocking the air outlet. When the heating element assembly swings or rotates, the second connecting shaft of the swing blade moves along the guide groove of the connecting seat, and when the second connecting shaft moves to either end of the guide groove, if the heating element assembly continues to move, the swing blade will rotate relative to the heating element assembly with the first connecting shaft as the rotating shaft, so that the swing blade can switch between swinging and resetting, so that the swing blade can adapt to the two working modes of cold air and warm air respectively. This solution can realize the switching of the two states of the swing blade without a reset torsion spring, and the switching effect is reliable and not easy to damage, with low installation difficulty, low cost and easy maintenance, which effectively solves the adverse effects of the reset torsion spring in the prior art.

[0037] In the warm air working mode, the heating element assembly enters and seals the air outlet, so that the wind generated by the wind wheel passes through the heating element assembly, thereby blowing out warm air. In order to avoid air leakage at the air outlet without passing through the heating element assembly and thus affecting the blowing effect of the warm air, the two sides of the swing blade need to fit the air guide long wall of the air outlet and the side wall of the heating element assembly to avoid cold air leakage due to gaps on both sides of the swing blade. At this time, the second connecting shaft is located at one end of the guide groove.

[0038] In the cold air working mode, the heating element assembly rotates away from the air outlet until it enters the storage position of the shell. During the process, the second connecting shaft of the swing blade moves from one end of the guide groove to the other end, and the heating element assembly continues to rotate. Since the second connecting shaft is limited by the other end of the guide groove, the swing blade will rotate with the first connecting shaft as the rotation axis, so that the swing blade and the heating element assembly rotate relative to each other until the limiting portion of the swing blade abuts against the abutting position of the heating element assembly, so that the swing blade can be combined with the wind guide long wall of the air outlet to form an air guide outlet. When the heating element assembly does not block the cold air blowing, the cold air can be blown farther and more forcefully, so as to further improve the cold air blowing effect, while making the overall structure more compact and saving space.

[0039] It should also be added that when the switching motor drives the heating element assembly to rotate around the rotating shaft of the heating element assembly, until the second connecting shaft moves from the first limit point to the second limit point or from the second limit point to the first limit point, since the arc trajectory formed by the first connecting shaft and the second connecting shaft is not completely overlapped in the entire active trajectory, or the center points of the arc trajectory are no longer at the same point, there will be limit points in the active trajectory, and jamming and abnormal noise will occur at the limit points. In order to solve this problem, the present scheme sets the guide groove into an arc rail structure and applies geometric limitations such as formula one to achieve limited guidance of the active trajectory or center position of the second connecting shaft, so as to effectively avoid jamming and abnormal noise problems when the heating element assembly is active. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the connection structure between the heating element assembly and the swing blade and an enlarged partial structure in the warm air working mode of the present invention.

[0041] Figure 2 It is a schematic diagram of the connection structure between the heating element assembly and the swing blade and an enlarged part of the structure in the cold air working mode of the present invention.

[0042] Figure 3 It is a structural schematic diagram of the warm air structure of the present invention in the warm air working mode and an enlarged schematic diagram of the local structure.

[0043] Figure 4 It is a structural schematic diagram of the warm air structure of the present invention in the cold air working mode and an enlarged schematic diagram of the local structure.

[0044] Figure 5 It is a schematic diagram of the structural decomposition and the enlarged schematic diagram of the local structure of the warm air structure of the present invention.

[0045] Figure 6 It is a schematic diagram of the structure of the hot-cold switching heater in the present invention in the warm air working mode and an enlarged schematic diagram of the local structure.

[0046] Figure 7 It is a schematic diagram of the structure of the hot-cold switching heater in the cold air working mode and an enlarged schematic diagram of the local structure of the heater.

[0047] Figure 8 It is a schematic diagram of the structural decomposition and partial structural enlargement of the cold-hot switchable air heater of the present invention.

[0048] Fig. 9 It is a schematic diagram of the planar structure of the hot-cold switching heater of the present invention in the warm air working mode, wherein A2 is a schematic diagram of the partial cross-sectional structure of A1.

[0049] Fig.10 It is a schematic diagram of the planar structure of the hot-cold switching heater of the present invention in the cold air working mode, wherein B2 is a schematic diagram of the partial cross-sectional structure of B1.

[0050] Fig.11 It is a schematic diagram of the planar structure of the hot-cold switching heater of the present invention in the warm air working mode, and a schematic diagram of the geometric relationship of some structures.

[0051] Fig.12 It is a schematic diagram of the planar structure of the hot-cold switching heater of the present invention in the cold air working mode, and a schematic diagram of the geometric relationship of some structures.

[0052] Reference numerals include:

[0053] 1—Switch the motor;

[0054] 2—heating element assembly, 20—rotating shaft of the heating element assembly,

[0055] 21 - rotating frame, 22 - heating element, 23 - cable management board,

[0056] 211 - rotating part, 212 - top position,

[0057] 2111—first coupling end, 2112—second coupling end,

[0058] 231—cable management trough;

[0059] 3—Connection seat,

[0060] 31—guide groove, 32—motor accommodating chamber;

[0061] 4—Swinging leaves,

[0062] 41 - first connecting shaft, 42 - second connecting shaft, 43 - limiting portion, 44 - abutting surface, 45 - wind guide surface,

[0063] 42a—first limiting point, 42b—second limiting point;

[0064] 5—housing,

[0065] 51—air outlet, 52—storage space,

[0066] 511—wind-guiding short wall, 512—wind-guiding long wall;

[0067] 6—wind wheel parts;

[0068] 7—Wind rotor motor. DETAILED DESCRIPTION

[0069] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. It is understood that the drawings are only provided for reference and illustration, and are not used to limit the present invention. The connection relationship shown in the drawings is only for the convenience of clear description and does not limit the connection method.

[0070] In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention.

[0071] like Figure 1 to Figure 12 As shown, in an embodiment of the present invention, a heating structure is provided, comprising: a switching motor 1, a heating element assembly 2, a connecting seat 3 and a swing blade 4. Among them:

[0072] Switch motor 1;

[0073] The heating element assembly 2 has a rotating portion 211 at one end connected to the switching motor 1;

[0074] The connecting seat 3 is provided with a guide groove 31;

[0075] The swing blade 4 is provided with a first connecting shaft 41 hinged on the rotating part 211, and a second connecting shaft 42 inserted in the guide groove 31. Specifically, the swing blade 4 is a wind guide blade or a wind guide plate;

[0076] Among them, see Fig.11 and Fig.12 The guide groove 31 is an arc-shaped rail guide groove 31, and the two ends respectively have a first limit point 42a and a second limit point 42b for limiting the second connecting shaft 42. The warm air structure satisfies the following formula 1:

[0077]

[0078] In formula 1, a represents the distance between the first connecting axis 41 and the second connecting axis 42; c represents the distance between the first connecting axis 41 and the rotating axis 20 of the heating element assembly 2; b1 represents the distance between the second connecting axis 42 and the rotating axis 20 of the heating element assembly 2 when the second connecting axis 42 is at the first limit point 42a; α represents the angle between a and c when the second connecting axis 42 is at the first limit point 42a; b2 represents the distance between the second connecting axis 42 and the rotating axis 20 of the heating element assembly 2 when the second connecting axis 42 is at the second limit point 42b; β represents the angle between a and c when the second connecting axis 42 is at the first limit point 42a.

[0079] In this solution, the heating element assembly 2 is driven to rotate by the switching motor 1, so that the heating element assembly 2 can swing to a certain angle, thereby realizing that the heating element assembly 2 can enter or leave the air outlet 51, so as to realize the switching of the warm air working mode and the cold air working mode of the heater, respectively, and avoid affecting the cold air outlet effect due to the heating element assembly 2 blocking the air outlet 51. When the heating element assembly 2 swings or rotates, the second connecting shaft 42 of the swing blade 4 moves along the guide groove 31 of the connecting seat 3, and when the second connecting shaft 42 moves to either end of the guide groove 31, if the heating element assembly 2 continues to move, the swing blade 4 will rotate relative to the heating element assembly 2 with the first connecting shaft 41 as the rotating shaft, so that the swing blade 4 can realize the switching of swinging and resetting, so that the swing blade 4 can adapt to the two working modes of cold air and warm air respectively. In this solution, the switching of the two states of the swing blade 4 can be realized without the need for a reset torsion spring, and the switching effect is reliable and not easy to damage, the installation difficulty is low, the cost is low and it is easy to maintain, and it effectively solves the adverse effects caused by the reset torsion spring in the prior art.

[0080] In the warm air working mode, the heating element assembly 2 enters and seals the air outlet 51, so that the wind generated by the wind wheel component 6 passes through the heating element assembly 2, thereby blowing out warm air. In order to avoid air leakage at the air outlet 51 without passing through the heating element assembly 2 and thus affecting the blowing effect of the warm air, the two sides of the swing blade 4 need to fit the air guide long wall 512 of the air outlet 51 and the side wall of the heating element assembly 2 to avoid cold air leakage due to the gap on both sides of the swing blade 4. At this time, the second connecting shaft 42 is located at one end of the guide groove 31.

[0081] In the cold air working mode, the heating element assembly 2 rotates away from the air outlet 51 until it enters the storage position 52 of the shell 5. During the process, the second connecting shaft 42 of the swing blade 4 moves from one end of the guide groove 31 to the other end, and the heating element assembly 2 continues to rotate. Since the second connecting shaft 42 is limited by the other end of the guide groove 31, the swing blade 4 will rotate with the first connecting shaft 41 as the rotation axis, so that the swing blade 4 and the heating element assembly 2 rotate relative to each other until the limiting portion 43 of the swing blade 4 abuts against the abutting position 212 of the heating element assembly 2, so that the swing blade 4 can be combined with the wind guide long wall 512 of the air outlet 51 to form an air guide port. When the heating element assembly 2 does not block the cold air blowing, the cold air can be blown farther and more forcefully, so as to further improve the cold air blowing effect, while making the overall structure more compact and saving space.

[0082] It should also be added that when the switching motor 1 drives the heating element assembly 2 to rotate around the rotating shaft 20 of the heating element assembly 2, until the second connecting shaft 42 moves from the first limit point 42a to the second limit point 42b or from the second limit point 42b to the first limit point 42a, since the circular arc trajectory formed by the first connecting shaft 41 and the second connecting shaft 42 is not completely overlapped in the entire activity trajectory, or the center points of the circular arc trajectory are no longer at the same point, there will be limit points in the activity trajectory, and jamming and abnormal noise will occur at the limit points. In order to solve this problem, the present scheme sets the guide groove 31 into an arc rail structure and applies geometric limitations such as formula one, so as to achieve limited guidance of the activity trajectory or the center position of the second connecting shaft 42, so as to effectively avoid jamming and abnormal noise problems when the heating element assembly 2 is active.

[0083] In one embodiment, Figure 1 As shown, the rotary part 211 is provided with a first coupling end 2111 connected to the rotating shaft of the switching motor 1, and a second coupling end 2112 hinged to the first connecting shaft 41. Specifically, the two states of the swing blade 4 can be switched without a reset torsion spring, the switching effect is reliable and not easy to damage, the installation difficulty is low, the cost is low and the maintenance is easy, which effectively solves the adverse effects caused by the reset torsion spring in the prior art.

[0084] In another embodiment, Figure 1 , Figure 2 , Figure 4 , Figure 5 as well as Figure 8~Figure 10 As shown, the swing blade 4 is also provided with a limiter 43 for rotating the swing blade 4 to a predetermined angle. Specifically, the swing blade 4 can be rotated to a predetermined angle in the cold air working mode to prevent the swing blade 4 from rotating too much and affecting the wind guiding effect of the cold air outlet. Furthermore, the swing blade 4 can be switched between two states without a reset torsion spring, and the switching effect is reliable and not easy to damage, the installation difficulty is low, the cost is low and the maintenance is easy, which effectively solves the adverse effects caused by the reset torsion spring in the prior art.

[0085] In yet another embodiment, Figure 2 and Figure 4 As shown, the heating element assembly 2 includes a rotating frame 21 and a heating element 22 mounted on the rotating frame 21, and a rotating portion 211 is disposed at one end of the rotating frame 21;

[0086] The limiting portion 43 is provided on the first connecting shaft 41, and the rotating frame 21 is provided with a resisting position 212 resisted by the limiting portion 43. Specifically, the limiting portion 43 resists against the resisting position 212 on the rotating frame 21, thereby limiting the maximum angle or the predetermined angle of the swing blade 4, so as to achieve the best wind guiding effect of the swing blade 4 at the air outlet 51. Furthermore, the swing blade 4 can be switched between two states without the need for a reset torsion spring, the switching effect is reliable and not easy to damage, the installation difficulty is low, the cost is low and the maintenance is easy, and the adverse effects caused by the reset torsion spring in the prior art are effectively solved.

[0087] In yet another embodiment, Figure 1 to Figure 10 As shown, the guide groove 31 is a waist-shaped groove. When the heating element assembly 2 swings or rotates, the second connecting shaft 42 of the swing blade 4 moves along the guide groove 31 of the connecting seat 3, and when the second connecting shaft 42 moves to either end of the guide groove 31, if the heating element assembly 2 continues to move, the swing blade 4 will rotate relative to the heating element assembly 2 with the first connecting shaft 41 as the rotating shaft, so that the swing blade 4 can switch between swinging and resetting, so that the swing blade 4 can adapt to the two working modes of cold air and warm air respectively. Furthermore, the swing blade 4 can switch between two states without the need for a reset torsion spring, and the switching effect is reliable and not easy to damage, with low installation difficulty, low cost and easy maintenance, which effectively solves the adverse effects of the reset torsion spring in the prior art.

[0088] In another embodiment, if Figure 3~Figure 5 As shown, the connection seat 3 is provided with a motor accommodating cavity 32, and the switching motor 1 is installed in the motor accommodating cavity 32. Specifically, the compactness of the overall structure is further improved and the occupied space is reduced. Furthermore, the swing blade 4 can be switched between two states without the need for a reset torsion spring, and the switching effect is reliable and not easy to damage, the installation difficulty is low, the cost is low and the maintenance is easy, which effectively solves the adverse effects caused by the reset torsion spring in the prior art.

[0089] In another embodiment, if Figure 4 As shown, a wire management plate 23 is provided at the bottom of the heating element assembly 2, and a wire management groove 231 is provided on the wire management plate 23. Specifically, the wires can be better organized to avoid the rotation of the heating element assembly 2 being affected by the disordered wires, and the risk of the wires being entangled due to the rotation of the heating element assembly 2 is avoided, thereby reducing safety hazards, and further improving the compactness of the overall structure and reducing the occupied space. Furthermore, the swing blade 4 can be switched between two states without the need for a reset torsion spring, and the switching effect is reliable and not easy to damage, with low installation difficulty, low cost and easy maintenance, which effectively solves the adverse effects of the reset torsion spring in the prior art.

[0090] A hot and cold switching heater, such as Figure 6~Figure 10 As shown, it includes: a housing 5, a wind wheel component 6, a wind wheel motor 7 and a warm air structure.

[0091] The housing 5 is provided with an air outlet 51;

[0092] The wind wheel member 6 is installed in the housing 5;

[0093] The wind wheel motor 7 drives the wind wheel member 6 to rotate;

[0094] The warm air structure is installed on the housing 5 and is any one of the warm air structures described above, wherein the switching motor 1 is used to drive the heating element assembly 2 to enter and / or leave the air outlet 51. In this solution, the switching motor 1 drives the heating element assembly 2 to rotate, so that the heating element assembly 2 can swing a certain angle, thereby realizing that the heating element assembly 2 can enter or leave the air outlet 51, so as to respectively realize the switching of the warm air working mode and the cold air working mode of the heater, and avoid affecting the cold air outlet effect due to the heating element assembly 2 blocking the air outlet 51. When the heating element assembly 2 swings or rotates, the second connecting shaft 42 of the swing blade 4 moves along the guide groove 31 of the connecting seat 3, and when the second connecting shaft 42 moves to either end of the guide groove 31, if the heating element assembly 2 continues to move, the swing blade 4 will rotate relative to the heating element assembly 2 with the first connecting shaft 41 as the rotating shaft, so that the swing blade 4 can realize the switching of swinging and resetting, so that the swing blade 4 can adapt to the two working modes of cold air and warm air respectively. This solution can achieve the switching of the two states of the swing blade 4 without a reset torsion spring. The switching effect is reliable and not easy to damage. The installation difficulty is low, the cost is low and the maintenance is easy. It effectively solves the adverse effects caused by the reset torsion spring in the prior art.

[0095] In another embodiment, if Figure 2 , Figure 8~Figure 10 As shown, a short wind-guiding wall 511 and a long wind-guiding wall 512 are respectively provided on both sides of the outside of the air outlet 51, and a storage position 52 adjacent to one side of the short wind-guiding wall 511 is also provided on the housing 5, and the switching motor 1 is used to drive the heating element assembly 2 to move between the air outlet 51 and the storage position 52. Furthermore, the swing blade 4 can be switched between two states without the need for a reset torsion spring, and the switching effect is reliable and not easy to damage, with low installation difficulty, low cost and easy maintenance, which effectively solves the adverse effects caused by the reset torsion spring in the prior art.

[0096] Another embodiment, such as Figure 2 , Fig. 9 and Fig.10 As shown, the swing blade 4 is arranged on one side of the heating element assembly 2 close to the wind guide long wall 512, and the swing blade 4 has an abutment surface 44 and a wind guide surface 45. Specifically, a certain angle or arc is formed between the abutment surface 44 and the wind guide surface 45 of the swing blade 4 to further improve the wind guide effect in the cold wind state.

[0097] In detail, because the warm air assembly needs to completely cover the air outlet 51 in the warm air state, in order to avoid the air leakage of the swing blade 4 affecting the warm air outlet effect, the swing blade 4 needs to fit with the wind guide long wall 512 and the side wall of the rotating frame 21 in the warm air state. The solution of Document 1 uses a reset torsion spring. After a long time of use, the torsion spring will fatigue and lose its elasticity. After the torsion spring is damaged, in the warm air state, it is bound to cause the swing blade 4 to be unable to effectively fit with the wind guide long wall 512 and the side wall of the rotating frame 21. In the cold air state, the swing blade 4 cannot swing and stay at a predetermined angle, resulting in the swing blade 4 being unable to form the best cold air guide port with the wind guide long wall 512, which is bound to affect the cold air outlet effect and make the cold air unable to blow farther. The solution of the present application can well avoid the adverse effects caused by the damage of the torsion spring.

[0098] In the warm air state, the heating element assembly 2 enters and blocks the air outlet 51, and the two sides of the swing blade 4 are respectively attached to the wind guide long wall 512 and the side wall of the rotating frame 21 close to the wind guide long wall 512, so as to prevent the air outlet 51 from leaking and affecting the warm air blowing effect;

[0099] In the cold wind state, the heating element assembly 2 leaves the air outlet 51 and enters the storage position 52 on the shell 5. During the process, the swing blade 4 will rotate a certain angle until the limiting portion 43 of the swing blade 4 abuts against the abutting position 212 on the rotating frame 21. At this time, the side of the swing blade 4 close to the wind guide long wall 512 will be close to being flush with the wind guide long wall 512, so that the swing blade 4 and the wind guide long wall 512 can play a better wind guiding role at the air outlet 51, so that the cold wind can be blown farther, and the best cold wind blowing effect can be achieved. In detail, in the cold wind state, one side of the abutting surface 44 of the swing blade 4 is adjacent to or against the wind guide short wall 511, and the wind guide surface 45 of the swing blade 4 is close to being flush with the wind guide long wall 512, so that the swing blade 4 and the wind guide long wall 512 can play a better wind guiding role at the air outlet 51.

[0100] A method for switching between cold and warm air, comprising the following steps:

[0101] Switching step: driving the rotating part 211 of the heating element assembly 2 to rotate by switching the motor 1, so that the heating element assembly 2 can enter or leave the air outlet 51 of the heater;

[0102] Adjustment step of the swing blade 4: when the heating element assembly 2 rotates, the swing blade 4 rotates around the first connecting shaft 41 and relative to the rotating part 211, and the second connecting shaft 42 moves along the arc-shaped rail guide groove 31 provided with the first limiting point 42a and the second limiting point 42b, so as to switch the two states of the swing blade 4;

[0103] Warm air mode steps: when the heating element assembly 2 enters the air outlet 51, the wind wheel motor 7 drives the wind wheel member 6 to rotate, and the generated wind blows out warm air through the heating element assembly 2, and the swing blades 4 fit the wind guide long wall 512 of the air outlet 51 to prevent air leakage;

[0104] Cold air mode steps: when the heating element assembly 2 leaves the air outlet 51 and enters the storage position 52, the swing blade 4 moves along the arc-shaped rail guide groove 31 through the second connecting shaft 42 and rotates to a predetermined angle, and forms a cold air guide port with the wind guide long wall 512, so that the cold air generated by the wind wheel member 6 is blown farther and more powerfully;

[0105] Limiting step: using formula 1 to make the moving track of the second connecting shaft 42 accurate, so as to avoid jamming and abnormal noise of the heating element assembly 2 during the switching process;

[0106] Formula 1:

[0107] In formula 1, a represents the distance between the first connecting axis 41 and the second connecting axis 42; c represents the distance between the first connecting axis 41 and the rotating axis 20 of the heating element assembly 2; b1 represents the distance between the second connecting axis 42 and the rotating axis 20 of the heating element assembly 2 when the second connecting axis 42 is at the first limit point 42a; α represents the angle between a and c when the second connecting axis 42 is at the first limit point 42a; b2 represents the distance between the second connecting axis 42 and the rotating axis 20 of the heating element assembly 2 when the second connecting axis 42 is at the second limit point 42b; β represents the angle between a and c when the second connecting axis 42 is at the first limit point 42a.

[0108] In the specification and claims of the present application, the words "include / comprise" and the words "have / include" and their variations are used to specify the existence of stated features, values, steps or components, but do not exclude the existence or addition of one or more other features, values, steps, components or combinations thereof.

[0109] Some features of the present invention are described in different embodiments for clarity of description, however, these features may also be described in combination in a single embodiment. Conversely, some features of the present invention are described in only a single embodiment for brevity, however, these features may also be described in different embodiments alone or in any suitable combination.

[0110] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A warm air structure, characterized in that: include: Switch Motor (1); The heating element assembly (2) has a rotating portion (211) at one end thereof which is connected to the switching motor (1); A connecting seat (3) provided with a guide groove (31); and The swing blade (4) is provided with a first connecting shaft (41) hinged on the rotating part (211), and a second connecting shaft (42) inserted into the guide groove (31); The guide groove (31) is an arc-shaped rail guide groove (31), and has a first limiting point (42a) and a second limiting point (42b) for limiting the second connecting shaft (42) at both ends, respectively. The warm air structure satisfies the following formula 1: In formula 1, a represents the distance between the first connecting axis (41) and the second connecting axis (42); c represents the distance between the first connecting axis (41) and the rotating axis (20) of the heating element assembly (2); b1 represents the distance between the second connecting axis (42) and the rotating axis (20) of the heating element assembly (2) when the second connecting axis (42) is at the first limit point (42a); α represents the angle between a and c when the second connecting axis (42) is at the first limit point (42a); b2 represents the distance between the second connecting axis (42) and the rotating axis (20) of the heating element assembly (2) when the second connecting axis (42) is at the second limit point (42b); β represents the angle between a and c when the second connecting axis (42) is at the first limit point (42a); The rotating portion (211) is provided with a first shaft connecting end (2111) connected to the rotating shaft of the switching motor (1), and a second shaft connecting end (2112) hingedly connected to the first connecting shaft (41); The swing blade (4) is also provided with a limiting portion (43) for rotating the swing blade (4) to a predetermined angle; The heating element assembly (2) comprises a rotating frame (21) and a heating element (22) mounted on the rotating frame (21); the rotating portion (211) is arranged at one end of the rotating frame (21); The limiting portion (43) is disposed on the first connecting shaft (41), and the rotating frame (21) is provided with a resisting position (212) resisted by the limiting portion (43); The guide groove (31) is a waist-shaped groove; the connecting seat (3) is provided with a motor accommodating cavity (32), and the switching motor (1) is installed in the motor accommodating cavity (32).

2. The warm air structure according to claim 1, characterized in that: A wire management plate (23) is provided at the bottom of the heating element assembly (2), and the wire management plate (23) is provided with a wire management groove (231).

3. A hot and cold switchable heater, characterized in that: include: The housing (5) is provided with an air outlet (51); A wind wheel component (6) is installed in the housing (5); A wind wheel motor (7) drives the wind wheel member (6) to rotate; as well as A warm air structure, mounted on a housing (5), is the warm air structure according to claim 1 or 2, wherein the switching motor (1) is used to drive the heating element assembly (2) to enter or leave the air outlet (51).

4. The hot and cold switching heater according to claim 3, characterized in that: An air guide short wall (511) and an air guide long wall (512) are respectively provided on both sides of the outside of the air outlet (51), and a storage position (52) adjacent to one side of the air guide short wall (511) is also provided on the shell (5), and the switching motor (1) is used to drive the heating element assembly (2) to move between the air outlet (51) and the storage position (52).

5. The hot and cold switching heater according to claim 4, characterized in that: The swing blade (4) is arranged on a side of the heating element assembly (2) close to the wind guide long wall (512), and the swing blade (4) has an abutment surface (44) and a wind guide surface (45).

6. A method for switching between cold and warm air, characterized in that: The method is used to switch between hot and cold air for the hot and cold switchable air heater according to claim 5, and comprises the following steps: Switching step: the switching motor (1) drives the rotating part (211) of the heating element assembly (2) to rotate, so that the heating element assembly (2) can enter or leave the air outlet (51) of the heater; The swing blade (4) adjustment step: when the heating element assembly (2) rotates, the swing blade (4) rotates around the first connection shaft (41) and relative to the rotating portion (211), and the second connection shaft (42) moves along the arc-shaped rail guide groove (31) provided with a first limit point (42a) and a second limit point (42b), so as to switch the two states of the swing blade (4); Warm air mode steps: when the heating element assembly (2) enters the air outlet (51), the wind wheel motor (7) drives the wind wheel member (6) to rotate, and the generated wind passes through the heating element assembly (2) to blow out warm air, and the swing blades (4) are attached to the wind guide long wall (512) of the air outlet (51); Cold air mode steps: when the heating element assembly (2) leaves the air outlet (51) and enters the storage position (52), the swing blade (4) moves along the arc-shaped rail guide groove (31) through the second connecting shaft (42) and rotates to a predetermined angle, and forms a cold air guide outlet with the air guide long wall (512).

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