Rack-driven lifting mechanism and heating machine using same

Abstract

The utility model relates to the technical field of lifting devices, and provides a rack-driven lifting mechanism and a heater using the rack-driven lifting mechanism, the rack-driven lifting mechanism comprises a bottom plate, a first guide chute, a second guide chute, two lifting blocks and a driving assembly; the outer side surfaces of the first guide sliding groove and the second guide sliding groove are provided with inwards-sunken installation positions. The driving assembly comprises a motor, a worm, two shaft sleeves and two gears, the axis of the worm is vertically arranged in the longitudinal direction, the gears are installed in the two installation positions respectively, the two gears are coaxially arranged, and the gear on the same side with the worm is connected with the worm in a meshed mode; vertical racks are arranged on the surfaces of the two lifting blocks and connected with the corresponding gears in a meshed mode, the lifting cost can be reduced through transmission of the gears and the racks, the transmission strength of the gears can be reduced by combining a worm, the upper load limit of the lifting mechanism is increased, the load of a motor is reduced, and therefore the service life of the motor is prolonged, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting devices, in particular to a rack-driven lifting mechanism and a heater using the same. Background Art

[0002] In daily life, some home appliances, such as heaters, often need to use lifting mechanisms to adjust the height or fold them for storage in order to save space and avoid dust when idle. Traditional lifting mechanisms mostly use chain transmission or hydraulic lifting, which often requires a large transmission force to drive, resulting in the need to use a drive device with a higher load capacity; the upper load limit of the lifting structure is low and cannot meet greater needs; the equipment is not stable enough during the lifting process, and it will shake and make noise during the lifting process after a long time of use. Utility Model Content

[0003] In view of the above-mentioned defects, the purpose of the utility model is to propose a rack-driven lifting mechanism and a heater using the same, aiming to solve the problems of low load upper limit of the lifting mechanism, large force required for gear transmission, insufficient equipment stability and noise during lifting.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A rack-driven lifting mechanism comprises a bottom plate, a first guide slot, a second guide slot, two lifting blocks and a driving assembly;

[0006] The first guide slot is vertically mounted on one end of the bottom plate, and the second guide slot is vertically mounted on the other end of the bottom plate. The outer surfaces of the first guide slot and the second guide slot are provided with inwardly recessed mounting positions.

[0007] The driving assembly includes a motor, a worm, two sleeves and two gears, the output end of the motor is connected to one end of the worm, the axis of the worm is arranged vertically in the longitudinal direction, the inner rings of the two sleeves are respectively sleeved on the two ends of the worm, the outer rings of the two sleeves are connected to the outer surface of the first guide slide groove with the installation position, the gears are respectively installed in the two installation positions, the two gears are coaxially arranged, and the gear on the same side of the worm is meshed with the worm;

[0008] The two lifting blocks are respectively arranged in the first guide slot and the second guide slot in a liftable manner, and vertical racks are provided on the surfaces of the two lifting blocks, and the racks are meshed and connected with the corresponding gears.

[0009] More preferably, the first guide slot and the second guide slot are arranged in parallel in the same direction.

[0010] Specifically, the lifting block is provided with a limit block; a limit hole is provided on the back side of the outer surface of the mounting position provided in the first guide slide groove and the second guide slide groove, the limit hole is a long strip through hole, the length direction of the through hole is a vertical direction, the limit block passes through the first guide slide groove and the second guide slide groove from the limit hole and extends to the outside, and the limit hole is used to limit the moving space of the limit block.

[0011] More preferably, the motor is a stepper motor.

[0012] A heater, comprising the rack-driven lifting mechanism described above, and also comprising two support plates, a top plate, an air supply device, a heating device and a windshield;

[0013] The two support plates are installed parallel to each other and vertically on the bottom plate;

[0014] The air supply device is installed above the bottom plate and is used to supply air to the heating device;

[0015] The heating device comprises a plurality of heating plates and connecting rods, wherein the heating plates are arranged parallel to each other and spaced apart between the two support plates through the connecting rods, the heating plates are arranged vertically, the connecting rods extend from one end of one support plate to the other end of the support plate, and the heating plates and the connecting rods are located above the air supply device;

[0016] The wind shield is arranged outside the heating plate, and both ends of the wind shield are respectively connected to the corresponding support plates, and the support plate and the wind shield enclose a heating space with an air outlet, and a plurality of the heating plates are located inside the heating space;

[0017] The top plate covers the top of the air outlet, the output end of the rack-driven lifting mechanism is connected to the top plate, the rack-driven lifting mechanism is used to drive the lifting and movement of the top plate, and the lifting and lowering of the top plate is used to open or close the air outlet.

[0018] More preferably, the horizontal cross section of the heating plate is wavy.

[0019] Specifically, the air supply device includes a driving motor, an air supply blade and a housing, the housing is fixedly connected to the bottom plate, and the shape of the housing on a cross section parallel to the support plate is an arc, and the arc angle of the arc is 90° and the tangent lines of the two end points of the arc are parallel to the horizontal direction and the vertical direction respectively;

[0020] The driving motor is mounted on the surface of the housing, the air supply blades are mounted on the output shaft of the driving motor, and the air supply blades are parallel to the supporting plate.

[0021] Furthermore, two mounting grooves are provided at the top of the support plate, the mounting grooves are in the shape of long strips, and the length direction of the mounting grooves is the vertical direction;

[0022] A column is also provided between the support plate and the top plate. The column is embedded and installed in the installation groove. The column is a hollow structure, and the top of the column is higher than the top of the support plate.

[0023] Preferably, the number of the connecting rods is 2.

[0024] Preferably, the number of the air supply blades is 5, and the air supply blades are evenly spaced and distributed on the output shaft of the drive motor.

[0025] One of the above technical solutions has the following advantages or beneficial effects:

[0026] The longitudinal setting of the worm can make better use of space, has good self-locking performance, prevents passive rotation, and improves the stability of the lifting mechanism. The use of gear and rack transmission can reduce the lifting cost. The combination of the worm can reduce the gear transmission force, increase the load limit of the lifting mechanism, and reduce the load of the motor, thereby increasing the motor life and reducing costs. The guide groove provides good guidance and is more stable during operation. It is not easy to deviate from the track or shake. It can be lifted and lowered at a uniform speed, reducing noise and increasing stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a left and right isometric view of an embodiment of the rack-driven lifting mechanism of the utility model;

[0028] Figure 2 It is a front view of an embodiment of the rack-driven lifting mechanism of the utility model;

[0029] Figure 3 It is a right side view of an embodiment of the rack-driven lifting mechanism of the utility model;

[0030] Figure 4 This is a schematic diagram of the installation position of an embodiment of the rack-driven lifting mechanism of the utility model;

[0031] Figure 5 This is a transmission structure diagram of an embodiment of the rack-driven lifting mechanism of the utility model;

[0032] Figure 6 It is an isometric view of an embodiment of the heater of the utility model without a windshield;

[0033] Figure 7 It is an isometric view with a baffle of one embodiment of the heater of the utility model;

[0034] Figure 8 It is a front view of a heating device of an embodiment of the heater of the utility model;

[0035] Fig. 9 It is a side view of a support plate of an embodiment of the heater of the utility model;

[0036] Fig.10 This is a schematic diagram of an air outlet of an embodiment of the heater of the utility model;

[0037] Among them: bottom plate 1, sleeve 2, worm 3, gear 4, motor 5, first guide slot 61, second guide slot 62, limit hole 601, lifting block 7, limit block 701, support plate 8, mounting slot 81, top plate 9, air supply device 10, drive motor 101, air supply blade 102, housing 103, heating device 11, heating plate 111, connecting rod 112, wind shield 12, column 13, air outlet 14, mounting position 15. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0041] In the description of the present invention, it should be noted that, 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] like Figure 1 , Figure 2 and Figure 5 As shown, a preferred embodiment of the present application is a rack-driven lifting mechanism, comprising a base plate 1, a first guide slot 61, a second guide slot 62, two lifting blocks 7 and a driving assembly;

[0043] The first guide slot 61 is vertically mounted on one end of the bottom plate 1, and the second guide slot 62 is vertically mounted on the other end of the bottom plate 1. The outer surfaces of the first guide slot 61 and the second guide slot 62 are provided with inwardly recessed mounting positions 15.

[0044] The driving assembly includes a motor 5, a worm 3, two sleeves 2 and two gears 4, the output end of the motor 5 is connected to one end of the worm 3, the axis of the worm 3 is arranged vertically in the longitudinal direction, the inner rings of the two sleeves 2 are respectively sleeved on the two ends of the worm 3, the outer rings of the two sleeves 2 are connected to the outer surface of the first guide slot 61 with the mounting position 15, the gears 4 are respectively installed in the two mounting positions 15, the two gears 4 are coaxially arranged, and the gear 4 on the same side as the worm 3 is meshed and connected with the worm 3;

[0045] The two lifting blocks 7 are respectively arranged in the first guide slot 61 and the second guide slot 62 so as to be liftable. Vertical racks are provided on the surfaces of the two lifting blocks 7 , and the racks are meshed and connected with the corresponding gears 4 .

[0046] Specifically, the motor 5 is a bidirectional drive motor. During the lifting process, the motor 5 drives the worm 3 to rotate one circle, and the gear 4 rotates one tooth to drive the rack of the lifting block 7 to rise one tooth, which can achieve uniform lifting and lowering with good stability. Specifically, the motor 5 drives the worm 3 to rotate through the output shaft, thereby driving the gear 4 meshing with the worm 3, and the gear 4 rotates to drive the rack on the surface of the lifting block 7. The gear 4 of the first guide slot 61 is coaxial with the gear 4 of the second guide slot 62. When the gear 4 of the first guide slot 61 rotates, it drives the gear 4 of the second guide slot 62 to rotate synchronously, driving the lifting blocks 7 of the first guide slot 61 and the second guide slot 62 to be lifted synchronously in the guide slots; during the descent process, the motor 5 rotates in the opposite direction, and the same applies to other processes.

[0047] The utility model adopts gear 4 and rack transmission to reduce the lifting cost. Combined with the worm 3, the gear transmission force can be reduced, the load upper limit of the lifting mechanism is increased, and the load of the motor 5 is reduced, thereby increasing the life of the motor 5 and reducing the cost. The guide groove provides good guidance and is more stable during operation, and is not prone to deviating from the track or shaking.

[0048] It is worth noting that the left side surface of the first guide slot 61 is connected to the sleeve 2 through a threaded hole, and the two ends of the worm 3 are rotatably mounted on the two sleeves 2 respectively. The axis of the worm 3 is vertical longitudinally, that is, the worm 3 is perpendicular to the bottom plate 1, which can effectively utilize the space and has good self-locking performance to prevent passive rotation, thereby improving the stability of the lifting mechanism. Specifically, when the motor 5 stops working, it is necessary to keep the lifting block 7 at the current position without spontaneous movement. The worm 3 will generate friction with the gear 4 due to the characteristics of its spiral shape, and the friction will prevent the worm 3 from rotating in the opposite direction. Under the action of gravity, the static friction between the worm 3 and the gear 4 of the vertical worm 3 will be greater, and the self-locking performance of the worm 3 will be better. Figure 4 As shown, the first guide slot 61 and the second guide slot 62 are both provided with an inwardly recessed mounting position 15, in which an opening is provided. The gear 4 is meshedly connected with the rack of the lifting block 7 through the opening, which can further save space. The two gears 4 are coaxially arranged, which can also save space, and only one driving motor is required.

[0049] Furthermore, the first guide slot 61 and the second guide slot 62 are arranged in parallel in the same direction.

[0050] Further, the parallel arrangement of the first guide slot 61 and the second guide slot 62 in the same direction can more effectively utilize space. Since the two guide slots are in the same direction, the overall size of the mechanism can be reduced, and when maintenance or replacement of parts is required, the operation can be performed more conveniently and quickly.

[0051] Furthermore, the lifting block 7 is provided with a limit block 701; a limit hole 601 is provided on the back side of the outer surface of the mounting position 15 provided in the first guide slot 61 and the second guide slot 62, and the limit hole 601 is a long through hole, and the length direction of the through hole is the vertical direction. The limit block 701 passes through the first guide slot 61 and the second guide slot 62 from the limit hole 601 and extends to the outside, and the limit hole 601 is used to limit the moving space of the limit block 701.

[0052] To further explain, Figure 3As shown, the limit hole 601 can ensure that the lifting block 7 moves within a safe range by limiting the movement of the limit block 701. Specifically, the limit block 701 cannot move left and right in the limit hole 601, but can only move up and down, and the space for the lifting block 7 to move up and down is limited to avoid damage or accidents caused by exceeding the predetermined range, and ensure that the lifting block 7 does not exceed the safe range during operation. In this way, potential risks and the possibility of accidents can be reduced, and the safety performance of the lifting mechanism can be improved. The size of the limit hole 601 can be designed as needed to adapt to different work requirements and space restrictions.

[0053] Furthermore, the motor 5 is a stepper motor. The stepper motor can achieve precise control of the rotation angle by controlling the frequency and sequence of the pulse signal, thereby achieving precise positioning of the lifting block. The stepper motor usually consumes power only when it needs to rotate, and does not require additional power to maintain its position. This makes the stepper motor advantageous in applications requiring energy saving and low power consumption.

[0054] A heater, using the rack-driven lifting mechanism as described above, further comprising two support plates 8, a top plate 9, an air supply device 10, a heating device 11 and a windshield 12;

[0055] The two support plates 8 are installed parallel to each other and vertically on the bottom plate 1;

[0056] The air supply device 10 is installed above the bottom plate 1 and is used to supply air to the heating device 11;

[0057] The heating device 11 includes a plurality of heating plates 111 and connecting rods 112. The heating plates 111 are arranged parallel to each other and spaced apart between the two support plates 8 through the connecting rods 112. The heating plates 111 are vertically arranged. The connecting rods 112 extend from one end of the support plate 8 to the other end of the support plate 8. The heating plates 111 and the connecting rods 112 are located above the air supply device 10.

[0058] The wind shield 12 is arranged outside the heating plate 111, and both ends of the wind shield 12 are respectively connected to the corresponding support plate 8, and the support plate 8 and the wind shield 12 enclose a heating space with an air outlet 14, and a plurality of the heating plates are located inside the heating space;

[0059] The top plate 9 covers the top of the air outlet 14 , and the output end of the rack-driven lifting mechanism is connected to the top plate 9 . The rack-driven lifting mechanism is used to drive the lifting and movement of the top plate 9 . The lifting and lowering of the top plate 9 is used to open or close the air outlet 14 .

[0060] In this embodiment, if Figure 6 and Figure 7 The two support plates 8 provide overall support. The air supply device 10 can be a fan or a blower, which blows air to the heating device 11 for heating. The connecting rod 112 is used to fix the heating plate 111, and the heating plate 111 is heated by electric energy. There are multiple heating plates 111, which can fully heat the passing wind. The wind shield plate 12 and the support plate 8 enclose a heating space with an air outlet 14. Several heating plates 111 are inside the heating space, which can prevent the surrounding cold air from entering the heating device 11 and reducing the heating effect.

[0061] Combined with the above effects, the air outlet 14 is as follows Fig.10 As shown, the output end of the lifting block 7 is connected to the top plate 9. The lifting of the lifting block 7 can drive the top plate 9 to move up and down. When the heater is working, when the lifting block 7 is lifted, it pushes the fixed rod to rise, so that the top plate 9 rises synchronously, and the air outlet 14 under the top plate 9 opens, and the heated air becomes warm air and is blown out from the air outlet 14 to achieve the heating effect.

[0062] Furthermore, the horizontal cross section of the heating plate 111 is wavy.

[0063] To further explain, Figure 8 As shown, the wavy heating plate 111 has a larger surface area than a flat heating plate. This means that more air can contact the heating plate, thereby improving the heating efficiency. The wavy shape of the heating plate 111 can form different concave and convex surfaces, so that the hot air flows in an undulating manner between the heating plates. Such flow can enhance the convection effect of the hot air, which helps to quickly transfer the heat generated by the heating plate to the passing cold air, thereby achieving a rapid heating effect.

[0064] Furthermore, the air supply device 10 includes a driving motor 101, an air supply blade 102 and a housing 103, the housing 103 is fixedly connected to the base plate 1, and the shape of the housing 103 on the cross section parallel to the support plate 8 is an arc, and the arc angle of the arc is 90° and the tangent lines of the two end points of the arc are parallel to the horizontal direction and the vertical direction respectively;

[0065] The driving motor 101 is mounted on the surface of the housing 103 , and the air supply blades 102 are mounted on the output shaft of the driving motor 101 . The air supply blades 102 are parallel to the supporting plate 8 .

[0066] It is worth noting that this design can more effectively guide the cold air into the heating device 11. Specifically, the driving motor 101 drives the output shaft to rotate, driving the air supply blades 102 to rotate, and the horizontal wind is diverted through the curved shell, and changed to vertical wind and blown into the heating device 11. Compared with ordinary fans or right-angled shells, the curved design of the shell 103 enables the air supply device 10 to better blow the cold air to the heating device 11. The curved design can reduce the resistance of the wind when changing the wind direction and reduce the load of the driving motor 101. The air supply blades 102 are parallel to the support plate 8, and the air flow can pass through the air supply device 10 more smoothly when the air is supplied, reducing the resistance of the air flow and helping to improve the air supply efficiency.

[0067] Furthermore, two mounting grooves 81 are provided at the top of the support plate 8, and the mounting grooves 81 are long strips, and the length direction of the mounting grooves 81 is the vertical direction;

[0068] A column 13 is further provided between the support plate 8 and the top plate 9 . The column 13 is embedded and installed in the installation groove 81 . The column 13 is a hollow structure, and the top end of the column 13 is higher than the top end of the support plate 8 .

[0069] like Fig. 9 As shown, two mounting grooves 81 are provided at the top of each support plate 8, and the edge of the column 13 is inserted into the mounting groove 81. Since the column 13 is hollow and the top of the column 13 is higher than the top of the support plate 8, an additional space can be provided. When the heater is not working, the top plate 9 covers the top of the column, and the air outlet 14 is in a closed state. When the heater is working, the air circulation inside the heater is promoted, which helps to produce evenly distributed hot air and improve the overall effect of the heater. The presence of the column 13 increases the stability of the support plate 8, making the structure of the entire heater more solid. The closed and hollow design of the column can provide greater strength and rigidity, ensuring that the heater is not easily deformed or loosened during use.

[0070] Furthermore, the number of the connecting rods 112 is 2.

[0071] To further explain, Figure 8 As shown, the heating plate 111 is installed in series between the two support plates 8 through two connecting rods 112. A larger heating plate 111 is required to accommodate more connecting rods 112. Therefore, compared with one connecting rod 112, the heating plate 11 installed in series through two connecting rods 112 is larger and has a better heating effect. The two connecting rods 112 can effectively fix the heating plate 111 to prevent it from loosening or shifting during operation, which helps to ensure that the heating element can work stably and provide a continuous and reliable heating effect.

[0072] Furthermore, the number of the air supply blades 102 is 5, and the air supply blades 102 are evenly spaced and distributed on the output shaft of the driving motor 101 .

[0073] It is worth noting that the equally spaced distribution of the air supply blades 102 can ensure that the wind can be evenly distributed throughout the heating device 11, which helps to ensure that each position of the heating position 11 receives air flow of similar intensity and quality, thereby achieving an overall uniform ventilation effect. When the air supply blades 102 are evenly distributed, the generation and transmission of wind is also smoother, reducing possible vibration and noise.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0075] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A rack-driven lifting mechanism, characterized in that: It includes a bottom plate, a first guide slide slot, a second guide slide slot, two lifting blocks and a driving assembly; The first guide slot is vertically mounted on one end of the bottom plate, and the second guide slot is vertically mounted on the other end of the bottom plate. The outer surfaces of the first guide slot and the second guide slot are provided with inwardly recessed mounting positions. The driving assembly includes a motor, a worm, two sleeves and two gears, the output end of the motor is connected to one end of the worm, the axis of the worm is arranged vertically in the longitudinal direction, the inner rings of the two sleeves are respectively sleeved on the two ends of the worm, the outer rings of the two sleeves are connected to the outer surface of the first guide slide groove with the installation position, the gears are respectively installed in the two installation positions, the two gears are coaxially arranged, and the gear on the same side of the worm is meshed with the worm; The two lifting blocks are respectively arranged in the first guide slot and the second guide slot in a liftable manner, and vertical racks are provided on the surfaces of the two lifting blocks, and the racks are meshed and connected with the corresponding gears.

2. The rack-driven lifting mechanism according to claim 1, characterized in that: The first guide slot and the second guide slot are arranged in parallel in the same direction.

3. The rack-driven lifting mechanism according to claim 1, characterized in that: The lifting block is provided with a limit block; The back side of the outer surface of the mounting position in the first guide slot and the second guide slot is provided with a limiting hole, the limiting hole is a long strip through hole, the length direction of the through hole is the vertical direction, the limiting block passes through the first guide slot and the second guide slot from the limiting hole and extends to the outside, and the limiting hole is used to limit the moving space of the limiting block.

4. The rack-driven lifting mechanism according to claim 1, characterized in that: The motor is a stepping motor.

5. A heater, characterized in that: It comprises the rack-driven lifting mechanism as claimed in any one of claims 1 to 4, and further comprises two support plates, a top plate, an air supply device, a heating device and a windshield; The two support plates are installed parallel to each other and vertically on the bottom plate; The air supply device is installed above the bottom plate and is used to supply air to the heating device; The heating device comprises a plurality of heating plates and connecting rods, wherein the heating plates are arranged parallel to each other and spaced apart between the two support plates through the connecting rods, the heating plates are arranged vertically, the connecting rods extend from one end of one support plate to the other end of the support plate, and the heating plates and the connecting rods are located above the air supply device; The wind shield is arranged outside the heating plate, and both ends of the wind shield are respectively connected to the corresponding support plates, and the support plate and the wind shield enclose a heating space with an air outlet, and a plurality of the heating plates are located inside the heating space; The top plate covers the top of the air outlet, the output end of the rack-driven lifting mechanism is connected to the top plate, the rack-driven lifting mechanism is used to drive the lifting and movement of the top plate, and the lifting and lowering of the top plate is used to open or close the air outlet.

6. The heater according to claim 5, characterized in that: The horizontal cross section of the heating plate is wavy.

7. The heater according to claim 5, characterized in that: The air supply device comprises a driving motor, air supply blades and a housing, wherein the housing is fixedly connected to the bottom plate, and the shape of the housing on a cross section parallel to the support plate is an arc, and the arc angle of the arc is 90° and the tangent lines of the two end points of the arc are parallel to the horizontal direction and the vertical direction respectively; The driving motor is mounted on the surface of the housing, the air supply blades are mounted on the output shaft of the driving motor, and the air supply blades are parallel to the supporting plate.

8. The heater according to claim 5, characterized in that: The top of the support plate is provided with two mounting grooves, the mounting grooves are in the shape of long strips, and the length direction of the mounting grooves is the vertical direction; A column is also provided between the support plate and the top plate. The column is embedded and installed in the installation groove. The column is a hollow structure, and the top of the column is higher than the top of the support plate.

9. The heater according to claim 5, characterized in that: The number of the connecting rods is 2.

10. The heater according to claim 7, characterized in that: The number of the air supply blades is 5, and the air supply blades are evenly distributed on the output shaft of the driving motor.

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