一种改进的恒温吹风机
By combining a non-contact temperature sensor and a distance sensor in a constant-temperature blower, and with a heat insulation device to protect the sensor, the problems of poor temperature control and easy sensor damage are solved, achieving higher detection accuracy and equipment reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN BOWEI INTELLIGENT TECH CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-17
AI Technical Summary
Existing constant temperature hair dryers cannot accurately detect the temperature of the object being blown during use, resulting in poor temperature control. Furthermore, the sensors are easily affected by high temperatures, leading to a high failure rate and poor reliability and stability.
It combines a non-contact temperature sensor and a distance sensor, and uses a control circuit to precisely control the heating power of the electric heating device. It also uses a heat insulation device to protect the sensor, maintain a constant temperature in the detection cavity, and avoid prolonged high-temperature operation.
It improves the temperature control effect, reduces the failure rate, and enhances the detection accuracy of the sensor and the reliability and stability of the equipment.
Smart Images
Figure CN224504881U_ABST
Abstract
Claims
1. An improved constant temperature blower, comprising a body (1) and a handle (2) connected to the lower part of the body (1), wherein a vertical air inlet is provided in the handle (2), an annular air outlet is provided in the body (1), the upper end of the vertical air inlet is connected to the annular air outlet, a high-speed motor (5) is provided in the vertical air inlet, an electric heating device (6) is provided in the annular air outlet, and a plurality of annular array air outlets (113) are provided at the front end of the body (1), each air outlet (113) being connected to the annular air outlet, characterized in that: A detection cavity (14) is provided in the center of the body (1). The detection cavity (14) is located in the inner circle of the annular air outlet. A detection port is provided on the side of the detection cavity (14) facing the air outlet (113). A constant temperature detection device (3) is provided in the detection cavity (14). A heat insulation device is provided between the detection cavity (14) and the annular air outlet. The constant temperature detection device (3) includes a distance sensor (31) and a non-contact temperature sensor (32). A control circuit is also provided in the body (1) or handle (2). The distance sensor (31), the non-contact temperature sensor (32), the electric heating device (6) and the high-speed motor (5) are electrically connected to the control circuit respectively.
2. An improved constant temperature hair dryer as claimed in claim 1 wherein: The heat insulation device includes a heat insulation base (11) and a heat insulation frame (12). The heat insulation base (11) includes a front cover (111) and a heat insulation sleeve (112). The front cover (111) is fixedly installed at the front end of the body (1). The detection port is opened at the center of the front cover (111). The front end of the heat insulation sleeve (112) is formed on the outer edge of the detection port. The middle part of the heat insulation frame (12) has a forward-facing mounting groove. The heat insulation sleeve (112) is inserted into the mounting groove and abuts against the bottom of the mounting groove. The bottom of the mounting groove and the heat insulation sleeve (112) enclose the detection cavity (14). Each of the air outlets (113) is opened on the front cover (111) and located around the detection port.
3. An improved constant temperature hair dryer as claimed in claim 2 wherein: The rear end face of the front cover (111) is provided with a heat insulation ring (114), which is located around the heat insulation sleeve (112). The heat insulation ring (114) and the heat insulation sleeve (112) are spaced apart. The front end of the heat insulation frame (12) abuts against the heat insulation ring (114). The front cover (111), the heat insulation ring (114), the heat insulation sleeve (112) and the heat insulation frame (12) enclose and form an annular heat insulation cavity (13).
4. An improved constant temperature hair dryer as claimed in claim 2 wherein: The detection cavity (14) is provided with a detection fixing plate (116). The constant temperature detection device (3) is also provided with a detection PCB board (33). The detection PCB board (33) is fixedly installed on the front end of the detection fixing plate (116). The distance sensor (31) and the non-contact temperature sensor (32) are respectively installed on the detection PCB board (33). The rear part of the body (1) is provided with a control PCB board (4). The rear end of the heat insulation device is provided with a main board bracket (17). The control PCB board (4) is fixedly installed on the main board bracket (17). The control circuit is installed on the control PCB board (4). The bottom of the mounting slot is provided with a wire hole (121). A wire is passed through the wire hole (121). One end of the wire is electrically connected to the detection PCB board (33) and the other end is electrically connected to the control PCB board (4). A sealing plug (122) is provided between the wire hole (121) and the wire for sealing the wire hole (121).
5. An improved constant temperature hair dryer as claimed in claim 4 wherein: The front end cover (111) is provided with a magnetic ring (115) on its front end face. The magnetic ring (115) is located around each of the air outlets (113). The rear end of the body (1) is snapped with a rear cover (18). A light guide (19) is provided between the rear cover (18) and the control PCB board (4). A light-emitting component is provided on the rear end face of the control PCB board (4).
6. An improved constant temperature hair dryer as claimed in claim 1 wherein: A heat insulation ring (15) is fitted on the outer side of the heat insulation device, and the heat insulation ring (15) is located between the electric heating device (6) and the heat insulation device.
7. An improved constant temperature hair dryer as claimed in claim 1 wherein: The detection port cover is provided with a protective lens (16), and the rear end of the protective lens (16) is provided with multiple protective buckles (161), each of which is connected to the heat insulation device.
8. An improved constant temperature hair dryer according to claim 1, characterized in that: The handle (2) includes a handle shell (21), a handle (2) inner shell, and an air inlet screen (23). The handle shell (21) is fitted onto the outer side of the handle (2) inner shell. The handle (2) inner shell includes two shells (22), which are fastened together to form the vertical air inlet channel. An air inlet (221) is provided on the side of the lower end of the handle (2) inner shell. The upper end of the air inlet screen (23) is connected to the lower end of the handle shell (21) and fitted onto the air inlet (221). An air inlet filter (24) is provided between the air inlet (221) and the air inlet screen (23). An air inlet grille (25) is also provided in the vertical air inlet channel. The air inlet grille (25) is located between the high-speed motor (5) and the air inlet (221).
9. An improved constant temperature hair dryer as claimed in claim 8 wherein: The handle (2) is also provided with a temperature control component and a fan speed control component. A switch bracket (26) is provided on one side of any one of the housings (22). The temperature control component and the fan speed control component are arranged vertically and horizontally on the switch bracket (26). The temperature control component includes at least one temperature control switch (271) and at least one temperature control button (272). The temperature control switch (271) is fixedly mounted on the switch bracket (26) and is electrically connected to the control circuit. The temperature control button (272) is movably disposed on the handle housing (21) and engages with the temperature control switch (271) in a trigger-activated manner. The wind speed control device includes at least one wind speed switch (281) and at least one wind speed button (282). The wind speed switch (281) is fixedly installed on the switch bracket (26) and is electrically connected to the control circuit. The wind speed button (282) is movably disposed on the handle housing (21) and is triggered by the wind speed switch (281). Sound-absorbing cotton (29) is provided on the outer sides of the two shells (22).
10. An improved constant temperature hair dryer as claimed in claim 1 wherein: The electric heating device (6) is equipped with at least one NTC temperature sensor for detecting the internal temperature of the fuselage (1), and the NTC temperature sensor is electrically connected to the control circuit.