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CN-122028230-A - Controllable directional far infrared radiation ceramic heater

CN122028230ACN 122028230 ACN122028230 ACN 122028230ACN-122028230-A

Abstract

The invention relates to a controllable directional far infrared radiation ceramic heater, which belongs to the technical field of far infrared radiation ceramic heaters and comprises a composite ceramic heating body, a directional reflecting cover, a temperature control module, an electric adjusting component, a heating box body and an infrared sensor, wherein the composite ceramic heating body is arranged on the directional reflecting cover, the directional reflecting cover is connected with a strip-shaped equipment box, the temperature control module is arranged on the strip-shaped equipment box, the temperature control module detects the temperature of the composite ceramic heating body, the electric adjusting component is arranged on the heating box body, the electric adjusting component can perform angle adjustment on the strip-shaped equipment box, and the infrared sensor detects the temperature of a heating area of the composite ceramic heating body. According to the invention, the adjustable reflecting cover is configured, so that not only can the radiation directivity be concentrated, the energy concentration is ensured, but also the radiation angle can be adjusted according to the needs, the radiation efficiency is improved, and the problems of uncontrollable radiation direction, low energy utilization rate and local overheating of the traditional far infrared radiation ceramic heater can be solved.

Inventors

  • KE ANHUA
  • ZHOU XIAOBO

Assignees

  • 江苏天宝陶瓷股份有限公司

Dates

Publication Date
20260512
Application Date
20260309

Claims (9)

  1. 1. The controllable directional far infrared radiation ceramic heater comprises a composite ceramic heating body (1), a directional reflecting cover (2), a temperature control module (3), an electric adjusting component (5), a heating box body (6) and an infrared sensor (7), and is characterized in that the composite ceramic heating body (1) is installed on the directional reflecting cover (2), the directional reflecting cover (2) is connected with a strip-shaped equipment box (4), the temperature control module (3) is installed on the strip-shaped equipment box (4), the temperature control module (3) detects the temperature of the composite ceramic heating body (1), the electric adjusting component (5) is installed on the heating box body (6), the electric adjusting component (5) can conduct angle adjustment on the strip-shaped equipment box (4), and the infrared sensor (7) conducts temperature detection on a heating area of the composite ceramic heating body (1).
  2. 2. The controllable directional far infrared radiation ceramic heater according to claim 1, wherein the composite ceramic heater (1) is formed by sintering an alumina substrate, 5-15wt% of zirconia and 3-8wt% of ferric oxide, the sintering temperature is 1650 ℃, and a snake-shaped embedded nichrome resistance wire is arranged on the surface.
  3. 3. The controllable directional far infrared radiation ceramic heater according to claim 1, wherein a highly polished parabolic aluminum shell is arranged in the directional reflecting cover (2), and the focal length is coincident with the central axis of the heating body.
  4. 4. A controllable directional far infrared radiation ceramic heater according to claim 3, characterized in that the surface of the directional reflecting cover (2) is provided with an anodic aluminum oxide and an electron beam evaporation SiO 2 protective film.
  5. 5. The controllable directional far infrared radiation ceramic heater as set forth in claim 4, characterized in that the directional reflecting cover (2) is provided with a ceramic fiber felt layer (8) for heat insulation.
  6. 6. The controllable directional far infrared radiation ceramic heater according to claim 1, wherein the infrared sensor (7) is mounted on the heating box body (6), the heating box body (6) is uniformly provided with a feeding roller (9), and the heating box body (6) is provided with a sealing box door (10).
  7. 7. The controllable directional far infrared radiation ceramic heater according to claim 1, wherein the temperature control module (3) comprises a K-type thermocouple, a PID controller and a solid state relay, and the thermocouple is embedded into the composite ceramic heating body (1).
  8. 8. The controllable directional far infrared radiation ceramic heater according to claim 1, wherein the electric adjusting component (5) comprises a band-type brake stepping motor (501), a driving rod (502), a fixed lug (503), a supporting lug (504), a bearing sprocket (505), a transmission toothed chain (506) and a device box (507), the device box (507) is mounted on the heating box (6), the band-type brake stepping motor (501) is mounted on the device box (507), the bearing sprocket (505) is mounted on the driving end of the band-type brake stepping motor (501) and the driving rod (502), the bearing sprockets (505) are connected in a transmission manner, the driving rod (502) is rotationally connected with the heating box (6), the driving rod (502) is fixedly connected with the fixed lug (503), the fixed lug (503) is fixedly connected with the strip-type equipment box (4), the driving rod (502) is rotationally connected with the supporting lug (504) through a bearing, and the supporting lug (504) is fixedly connected with the heating box (6).
  9. 9. The controllable directional far infrared radiation ceramic heater according to claim 1, wherein the directional reflecting cover (2) is provided with a transparent shield (11), the transparent shield (11) is made of microcrystalline glass or fused quartz, the surface of the transparent shield (11) is plated with an oleophobic nano coating, the transparent shield (11) is of a double-layer hollow structure, inert gas is filled between layers, the distance is 2-5mm, and the outer surface is integrated with a metal grid.

Description

Controllable directional far infrared radiation ceramic heater Technical Field The invention relates to the technical field of far-infrared radiation ceramic heaters, in particular to a controllable directional far-infrared radiation ceramic heater. Background The far infrared radiation ceramic heater is an electric heating device which uses a ceramic element as a heat generating source and mainly emits far infrared rays to transfer heat energy, and generally adopts PTC ceramic. PTC stands for positive temperature coefficient, and the ceramic material has lower resistance at low temperature, large current and quick heating after being electrified. Along with the temperature rise, the resistance of the PTC ceramic can be increased sharply, so that the current is reduced automatically, the heating value is reduced, the far infrared ray directly heats an object, the heat loss is small, a large amount of air is not needed to be heated before the flow heating, the energy utilization rate is high, and the energy saving effect is remarkable. The traditional far infrared ceramic heater generally adopts a fixed PTC ceramic heating element, the radiation direction is not adjustable, the heat efficiency is rapidly attenuated along with the increase of distance, the existing directional heating scheme such as a reflecting cover has the problems of fixed angle, low reflection efficiency, easiness in generating hot spots and the like, and the controllable directional far infrared ceramic heater is provided for scenes needing accurate heat radiation control, such as directional heating, industrial drying, medical physiotherapy and the like, is provided with an adjustable reflecting cover, can concentrate radiation directivity, ensure energy concentration, can adjust the radiation angle according to the need, improve the radiation efficiency, adopts an embedded thermocouple and an infrared sensor for real-time calibration, eliminates temperature drift, realizes double-sensing cooperative control, sets a self-adaptive PID algorithm, can dynamically adjust parameters according to the heat load, and has better controllability. Disclosure of Invention The invention provides a controllable directional far infrared radiation ceramic heater, which solves the problems of uncontrollable radiation direction, low energy utilization rate and local overheating of the far infrared radiation ceramic heater in the prior art. The invention solves the technical problems by adopting the scheme that the controllable directional far infrared radiation ceramic heater comprises a composite ceramic heating body, a directional reflecting cover, a temperature control module, an electric adjusting component, a heating box body and an infrared sensor, wherein the composite ceramic heating body is arranged on the directional reflecting cover, the directional reflecting cover is connected with a strip-shaped equipment box, the temperature control module is arranged on the strip-shaped equipment box, the temperature control module detects the temperature of the composite ceramic heating body, the electric adjusting component is arranged on the heating box body, the electric adjusting component can adjust the angle of the strip-shaped equipment box, and the infrared sensor detects the temperature of a heating area of the composite ceramic heating body. On the basis of the technical scheme, the invention can be improved as follows. Further, the composite ceramic heating body is formed by sintering an alumina matrix, 5-15wt% of zirconia and 3-8wt% of ferric oxide, wherein the sintering temperature is 1650 ℃, a snake-shaped embedded nichrome resistance wire is arranged on the surface of the composite ceramic heating body, the zirconia can effectively improve fracture toughness, the composite ceramic heating body has good anti-seismic performance, and the ferric oxide can lock the radiation peak wavelength at 8-12 mu m and improve the radiation rate. Furthermore, the high-polishing parabolic aluminum shell is arranged in the directional reflecting cover, the focal length is coincident with the central axis of the heating body, off-axis aberration can be eliminated, and diffuse reflection loss is reduced. Furthermore, the surface of the directional reflecting cover is provided with anodic aluminum oxide and an electron beam evaporation SiO 2 protective film, the anodic aluminum oxide forms a porous Al2O3 hard layer to ensure hardness and basic corrosion resistance, and the electron beam evaporation SiO2 protective film can fill aluminum oxide micropores to improve the antioxidation service life. Further, a ceramic fiber felt layer is arranged in the directional reflecting cover for heat insulation. Further, the infrared sensor is installed in the heating box, the heating box evenly is provided with the pan feeding cylinder, the heating box is provided with sealed chamber door. Further, the temperature control module comprises a K-type thermocouple, a PID cont