An electric heating device

Abstract

The utility model discloses an electric heating device, which relates to the technical field of electric heating equipment. It includes a bottom shell, a control circuit board is installed in the bottom shell, and a knob-type speed control switch and a knob-type temperature control switch are respectively arranged on the control circuit board, an upper cover is fixedly installed on the top of the bottom shell, and an internal gear type slewing bearing is embedded in the upper cover, and a driving motor is installed at the bottom of the upper cover. The electric heating device starts the PTC heating element and adjusts the heating temperature through the knob-type temperature control switch, starts the driving motor and adjusts its speed through the knob-type speed control switch, and drives the internal gear type slewing bearing to rotate, thereby driving the PTC heating element on the heat-insulating turntable to rotate at a certain speed to provide heating. The arrangement of the PTC heating element is similar to the blades of a fan. When it rotates, it can promote the flow of surrounding air to form a certain warm wind effect, diffuse the heat to the surrounding environment, make the heat dissipation area relatively wider, and the temperature rise speed is faster.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heating equipment, in particular to an electric heating device. Background Art

[0002] Electric heaters are a common heating device in modern life. They use electricity as the main energy source and use resistance heating, induction heating, arc heating, electron beam heating, infrared heating and dielectric heating to heat the human body through direct contact, warm air convection, far infrared radiation and other means.

[0003] Existing electric heaters are usually small in size and easy to place. However, once placed, they can only heat in one direction, and the heating range has certain limitations. Utility Model Content

[0004] The utility model provides an electric heating device to solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electric heating device, comprising a bottom shell, a control circuit board is installed in the bottom shell, and a knob-type speed regulating switch and a knob-type temperature control switch are respectively arranged on the control circuit board, an upper cover is fixedly installed on the top of the bottom shell, and an internal gear slewing bearing is embedded in the upper cover, a driving motor is installed at the bottom of the upper cover, and the driving motor is electrically connected to the control circuit board, the output shaft end of the driving motor is transmission-connected to the internal gear slewing bearing through a gear, an insulating turntable is installed on the internal gear slewing bearing, a PTC heating element and a temperature sensor are respectively installed on the insulating turntable, and the PTC heating elements are distributed in an equilateral triangle, a conductive slip ring is embedded in the insulating turntable, and one end of the conductive slip ring is electrically connected to the PTC heating element and the temperature sensor through a wire, and the other end is electrically connected to the control circuit board through a wire, a mesh cover is arranged at the edge of the upper cover, support rods are installed around the top of the upper cover, and a top cover is installed on the top of the support rods.

[0006] Furthermore, a power port is provided on the control circuit board, and the power port extends outward from the outer wall of the base.

[0007] Furthermore, a knob-type timing switch is arranged on the control circuit board, and the knob-type timing switch extends outward from the outer wall of the base.

[0008] Furthermore, a docking ring groove is provided on the top of the bottom shell, and a docking convex ring is provided on the bottom of the upper cover, and the upper cover is clamped with the bottom shell through the docking convex ring and the docking ring groove.

[0009] Furthermore, a stepped annular groove is provided on the top of the upper cover, and the heat-insulating turntable is movably arranged in the stepped annular groove.

[0010] Furthermore, a clamping groove is provided on the top of the heat-insulating turntable, and the PTC heating element is fixed in the clamping groove by screws.

[0011] Compared with the prior art, the utility model provides an electric heating device, which has the following beneficial effects:

[0012] This electric heater device starts the PTC heater and adjusts the heating temperature through a knob-type temperature control switch, starts the drive motor and adjusts its speed through a knob-type speed control switch, and drives the internal gear slewing bearing to rotate, thereby driving the PTC heater on the insulation turntable to rotate at a certain speed to provide heating. The arrangement of the PTC heater is similar to the blades of a fan. When it rotates, it can promote the flow of surrounding air, form a certain warm wind effect, and diffuse heat to the surrounding environment, so that the heat dissipation area is relatively wider and the temperature rise rate is faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a cross-sectional view of the utility model;

[0015] Figure 3 It is a top view of the heat-insulating turntable portion of the utility model.

[0016] In the figure: 1. bottom shell; 2. control circuit board; 3. knob-type speed control switch; 4. knob-type temperature control switch; 5. upper cover; 6. internal gear slewing bearing; 7. drive motor; 8. heat-insulating turntable; 9. PTC heating element; 10. temperature sensor; 11. conductive slip ring; 12. mesh cover; 13. support rod; 14. top cover; 15. power port; 16. knob-type timing switch; 17. docking ring groove; 18. docking convex ring; 19. step ring groove; 20. clamping groove. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-Figure 3The utility model discloses an electric heating device, including a bottom shell 1, a control circuit board 2 is installed in the bottom shell 1, and a knob-type speed regulating switch 3 and a knob-type temperature control switch 4 are respectively arranged on the control circuit board 2, an upper cover 5 is fixedly installed on the top of the bottom shell 1, and an internal gear type slewing bearing 6 is embedded in the upper cover 5, a driving motor 7 is installed at the bottom of the upper cover 5, and the driving motor 7 is electrically connected to the control circuit board 2, the output shaft end of the driving motor 7 is transmission-connected to the internal gear type slewing bearing 6 through a gear, a heat-insulating turntable 8 is installed on the internal gear type slewing bearing 6, a PTC heating element 9 and a temperature sensor 10 are respectively installed on the heat-insulating turntable 8, and the PTC heating element 9 is distributed in an equilateral triangle, a conductive slip ring 11 is embedded in the heat-insulating turntable 8, and one end of the conductive slip ring 11 is connected by a wire It is electrically connected to the PTC heater 9 and the temperature sensor 10 respectively, and the other end is electrically connected to the control circuit board 2 through a wire. The PTC heater 9 is started and the heating temperature is adjusted through the knob-type temperature control switch 4, and the drive motor 7 is started and its speed is adjusted through the knob-type speed regulating switch 3. By driving the internal gear slewing bearing 6 to rotate, the PTC heater 9 on the insulation turntable 8 is driven to rotate at a certain speed for heating. The arrangement of the PTC heater 9 is similar to the blades of a fan. When it rotates, it can promote the flow of surrounding air to form a certain warm wind effect, diffuse the heat to the surrounding environment, so that the heat dissipation area is relatively wider and the temperature rise speed is faster. A mesh cover 12 is provided at the edge of the upper cover 5, and support rods 13 are installed around the top of the upper cover 5, and a top cover 14 is installed on the top of the support rods 13.

[0019] Specifically, the control circuit board 2 is provided with a power port 15, and the power port 15 extends outward from the outer wall of the base.

[0020] In this embodiment, the power port 15 is used to connect a wire to supply power to the heater.

[0021] Specifically, a knob-type timing switch 16 is disposed on the control circuit board 2, and the knob-type timing switch 16 extends outward from the outer wall of the base.

[0022] In this embodiment, through the knob-type timing switch 16, during the time setting stage, the user specifies the timing duration by rotating the knob, and the rotation of the knob will change the oscillation frequency in the circuit to produce different timing durations.

[0023] Specifically, a docking ring groove 17 is provided on the top of the bottom shell 1 , and a docking protruding ring 18 is provided on the bottom of the upper cover 5 , and the upper cover 5 is clamped with the bottom shell 1 through the docking protruding ring 18 and the docking ring groove 17 .

[0024] In this embodiment, the assembly and positioning between the upper cover 5 and the bottom shell 1 are facilitated by the cooperation between the docking protruding ring 18 and the docking ring groove 17 .

[0025] Specifically, a stepped annular groove 19 is provided on the top of the upper cover 5 , and the heat-insulating turntable 8 is movably disposed in the stepped annular groove 19 .

[0026] In this embodiment, there is a clearance fit between the heat-insulating turntable 8 and the upper cover 5 , so that the heat-insulating turntable 8 can be rotated by being driven by the internal gear type slewing bearing 6 .

[0027] Specifically, a clamping groove 20 is provided on the top of the heat-insulating turntable 8, and the PTC heating element 9 is fixed in the clamping groove 20 by screws.

[0028] In this embodiment, the clamping groove 20 is an assembly structure used for installing and positioning the PTC heating element 9 .

[0029] When in use, the PTC heater 9 is started and the heating temperature is adjusted through the knob-type temperature control switch 4, and the driving motor 7 is started and its speed is adjusted through the knob-type speed regulating switch 3. By driving the internal gear slewing bearing 6 to rotate, the PTC heater 9 on the insulation turntable 8 is driven to rotate at a certain speed to provide heating. The arrangement of the PTC heater 9 is similar to the blades of a fan. When it rotates, it can promote the flow of surrounding air, form a certain warm wind effect, and diffuse heat to the surrounding environment, so that the heat dissipation area is relatively wider and the temperature rise rate is faster.

[0030] To sum up, the electric heater device starts the PTC heater 9 and adjusts the heating temperature through the knob-type temperature control switch 4, starts the drive motor 7 and adjusts its speed through the knob-type speed control switch 3, and drives the internal gear slewing bearing 6 to rotate, thereby driving the PTC heater 9 on the insulation turntable 8 to rotate at a certain speed for heating. The arrangement of the PTC heater 9 is similar to the blades of a fan. When it rotates, it can promote the flow of surrounding air to form a certain warm wind effect, diffuse the heat to the surrounding environment, make the heat dissipation area relatively wider, and the temperature rise rate is faster.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art 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 appended claims and their equivalents.

Claims

1. An electric heating device, comprising a bottom shell (1), characterized in that: A control circuit board (2) is installed in the bottom shell (1), and a knob-type speed regulating switch (3) and a knob-type temperature control switch (4) are respectively arranged on the control circuit board (2); an upper cover (5) is fixedly installed on the top of the bottom shell (1), and an internally-toothed slewing bearing (6) is embedded in the upper cover (5); a driving motor (7) is installed at the bottom of the upper cover (5), and the driving motor (7) is electrically connected to the control circuit board (2); an output shaft end of the driving motor (7) is transmission-connected to the internally-toothed slewing bearing (6) through a gear; a heat-insulating turntable (8) is installed on the internally-toothed slewing bearing (6); The heat-insulating turntable (8) is respectively mounted with a PTC heating element (9) and a temperature sensor (10), and the PTC heating elements (9) are distributed in the form of an equilateral triangle. A conductive slip ring (11) is embedded in the heat-insulating turntable (8), and one end of the conductive slip ring (11) is electrically connected to the PTC heating element (9) and the temperature sensor (10) respectively through a wire, and the other end is electrically connected to a control circuit board (2) through a wire. A mesh cover (12) is arranged at the edge of the upper cover (5), support rods (13) are arranged around the top of the upper cover (5), and a top cover (14) is arranged on the top of the support rods (13).

2. An electric heating device according to claim 1, characterized in that: The control circuit board (2) is provided with a power port (15), and the power port (15) extends outward from the outer wall of the base.

3. An electric heating device according to claim 1, characterized in that: The control circuit board (2) is provided with a knob-type timing switch (16), and the knob-type timing switch (16) extends outward from the outer wall of the machine base.

4. The electric heating device according to claim 1, characterized in that: The top of the bottom shell (1) is provided with a docking ring groove (17), and the bottom of the upper cover (5) is provided with a docking convex ring (18), and is clamped with the bottom shell (1) via the docking convex ring (18) and the docking ring groove (17).

5. The electric heating device according to claim 1, characterized in that: A stepped annular groove (19) is provided on the top of the upper cover (5), and the heat-insulating rotating disk (8) is movably arranged in the stepped annular groove (19).

6. The electric heating device according to claim 1, characterized in that: A clamping groove (20) is provided on the top of the heat-insulating turntable (8), and the PTC heating element (9) is fixed in the clamping groove (20) by means of screws.

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