Hair dryer heating body convenient for accurate temperature measurement

Abstract

The utility model discloses a blower heating body convenient for accurate temperature measurement. The blower heating body comprises a heating wire group, a heating support is arranged in the heating wire group, a heat insulation cylinder is arranged at one end of the heating support, a temperature sensor is arranged on the outer wall of the heat insulation cylinder, a self-recovery fuse is arranged in the heat insulation cylinder, and a sealing assembly is arranged at the bottom end of the temperature sensor. According to the utility model, the design of the heat insulation cylinder, the temperature sensor and the sealing assembly is utilized, and the temperature sensor is arranged right below the heating wire group, so that the temperature sensor can directly detect the temperature of the heating wire group when the heating wire group emits heat radiation, and therefore, the temperature at which the self-recovery fuse can perform circuit breaking is more accurate, and the service life of the self-recovery fuse is prolonged. And meanwhile, the bearing box and the sealing ring are used for sealing and wrapping the opening part of the heat insulation cylinder, so that heat radiation of the heating wire group can be prevented from flowing into the heat insulation cylinder through the clamping hole, and an electric device arranged in the heat insulation cylinder is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of hair dryers, in particular to a hair dryer heating element which is convenient for accurate temperature measurement. Background Art

[0002] In daily life, people will use a hair dryer to dry their hair after washing it. During the use of the hair dryer, the heating mode will be used to accelerate the drying of the hair.

[0003] Existing hair dryer heating devices will have a thermostat installed inside to control the temperature of the heating wire, thereby preventing the temperature inside the hair dryer from being too high and causing damage to the user and the inside of the hair dryer, thereby playing a protective role. When installing the thermostat, it is necessary to drill a hole in the insulation tube so that the thermostat can be inserted into the hole to monitor the temperature of the heating wire. However, after the thermostat is installed, there will be a gap between the edge of the hole and the mounting plate of the thermostat, and there is a lack of sealing, so that the insulation effect of the insulation tube at the opening position is weakened, affecting the normal use of electronic devices installed inside the insulation tube. Utility Model Content

[0004] The purpose of the utility model is to provide a hair dryer heating element which is convenient for accurate temperature measurement, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hair dryer heating element that is convenient for accurate temperature measurement, comprising a heating wire group, a heating bracket for placing the heating wire group is arranged inside the heating wire group, an insulating tube for isolating heat is arranged at one end of the heating bracket, a temperature sensor for monitoring the temperature of the heating wire group is arranged on the outer wall of the insulating tube, a self-resetting fuse for circuit breaking is arranged inside the insulating tube, a sealing component for preventing heat from flowing in is arranged at the bottom end of the temperature sensor, and the sealing component comprises a receiving box, and a sealing member is arranged at the top of the receiving box.

[0006] Preferably, one end of the heating bracket is fixedly connected to the outer wall of the heat-insulating tube, and the other end of the heating bracket is provided with a slot for installing the heating wire group.

[0007] Preferably, the slot is tooth-shaped.

[0008] Preferably, the outer wall of the thermal insulation tube is provided with a through hole, the detection end of the temperature sensor is interlaced and connected with the through hole, and the mounting end of the temperature sensor is fixedly connected with the inner wall of the thermal insulation tube.

[0009] Preferably, the temperature sensor is located directly below the heating wire group.

[0010] Preferably, a receiving groove is provided at the top of the receiving box, and the receiving groove is used to wrap the portion of the temperature sensor located inside the insulation cylinder. The sealing member includes a sealing ring, and the bottom end of the sealing ring is fixedly connected to the top of the receiving box.

[0011] Preferably, mounting blocks are fixedly connected to both ends of the receiving box, mounting holes are respectively opened at the tops of the mounting blocks, and mounting bolts for mounting the mounting blocks and the heat insulation cylinder are inserted and connected inside the mounting holes.

[0012] Preferably, a controller for circuit control is provided inside the thermal insulation cylinder, the temperature sensor and the self-resetting fuse are electrically connected to the controller, and the input end of the controller is electrically connected to a power supply wire for power input.

[0013] Technical effects and advantages of the utility model:

[0014] The utility model utilizes the design of a thermal insulation tube, a temperature sensor and a sealing component. By arranging the temperature sensor just below the heating wire group, when the heating wire group emits heat radiation, the temperature sensor can directly detect the temperature of the heating wire group, thereby making the temperature at which the self-resetting fuse can break the circuit more accurate. At the same time, the receiving box and the sealing ring seal and wrap the opening of the thermal insulation tube, thereby preventing the heat radiation of the heating wire group from flowing into the interior of the thermal insulation tube through the card hole, thereby protecting the electrical components arranged inside the thermal insulation tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0016] Figure 2 This is one of the three-dimensional structural schematic diagrams of the heat insulation tube and the heating bracket of the utility model.

[0017] Figure 3 This is the second schematic diagram of the three-dimensional structure of the heat insulation tube and the heating bracket of the utility model.

[0018] Figure 4 For this utility model Figure 3 A is a schematic diagram of the enlarged structure.

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the sealing component of the utility model.

[0020] In the figure: 1. heating wire group; 2. heating bracket; 3. insulation tube; 4. temperature sensor; 5. self-resetting fuse; 6. controller; 7. sealing assembly; 71. receiving box; 72. mounting block; 73. sealing ring; 8. mounting bolts; 9. power supply wires. DETAILED DESCRIPTION

[0021] 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.

[0022] The utility model provides Figure 1-5 A hair dryer heating element that is easy to measure temperature accurately is shown, including a heating wire group 1, a heating bracket 2 for placing the heating wire group 1 is arranged inside the heating wire group 1, an insulating tube 3 for isolating heat is arranged at one end of the heating bracket 2, a temperature sensor 4 for monitoring the temperature of the heating wire group 1 is arranged on the outer wall of the insulating tube 3, a self-resetting fuse 5 for circuit breaking is arranged inside the insulating tube 3, a sealing component 7 for preventing heat from flowing in is arranged at the bottom end of the temperature sensor 4, and the sealing component 7 includes a receiving box 71, and a sealing member is arranged at the top of the receiving box 71.

[0023] Specifically, one end of the heating bracket 2 is fixedly connected to the outer wall of the heat-insulating tube 3 , and the other end of the heating bracket 2 is provided with a slot for installing the heating wire group 1 , and the slot is tooth-shaped.

[0024] Furthermore, multiple heating brackets 2 are symmetrically arranged, and the multiple heating brackets 2 are arranged in a circular shape and at equal intervals on the outer wall of the insulation tube 3. The joint between the heating bracket 2 and the insulation tube 3 is fixedly connected by bonding. A slot is opened at one end of the heating bracket 2 facing the heating wire group 1. The heating wire group 1 is placed in the slot for clamping and fixing. The heating wire group 1 is composed of a plurality of annular wavy heating resistor wires.

[0025] Specifically, the outer wall of the insulation tube 3 is provided with a through hole, the detection end of the temperature sensor 4 is connected to the through hole, the installation end of the temperature sensor 4 is fixedly connected to the inner wall of the insulation tube 3, the temperature sensor 4 is arranged directly below the heating wire group 1, and a controller 6 for circuit control is arranged inside the insulation tube 3, the temperature sensor 4 and the self-resetting fuse 5 are both electrically connected to the controller 6, and the input end of the controller 6 is electrically connected to a power supply wire 9 for power input.

[0026] Furthermore, the heat-insulating cylinder 3 is a cylinder made of mica material, which plays a role in high temperature resistance. The temperature sensor 4 is spaced apart from the self-resetting fuse 5. At the same time, the temperature sensor 4 is placed directly below the heating wire group 1, so that when the heating wire group 1 emits heat radiation through heating, the temperature sensor 4 can directly detect the temperature of the heating wire group 1. Generally, heat is most easily accumulated between the heating wire group 1 and the heat-insulating cylinder 3, and the temperature is higher than that of other parts. Therefore, the temperature sensor 4 is placed in this position, which can detect the critical temperature more quickly, so that the self-resetting fuse 5 cuts off the power supply, thereby improving the safety of the product. When the device 4 detects that the temperature reaches the critical value, it sends a signal to the controller 6. A control circuit board is arranged inside the controller 6. The control circuit board is arranged with a transistor. The control circuit board amplifies the current through the transistor, and then passes the amplified current through the self-resetting fuse 5, so that the self-resetting fuse 5 is triggered to fuse and disconnect the circuit to complete the self-protection work. When the temperature sensor 4 detects that the temperature does not reach the critical value, the control circuit board controls the current not to flow through the transistor, and flows from other circuits to the self-resetting fuse 5 to perform normal work of the heating wire group 1. The power supply wire 9 is used to connect the plug for power supply.

[0027] Specifically, a storage groove is provided at the top of the receiving box 71, and the storage groove is used to wrap the part of the temperature sensor 4 located inside the insulation tube 3. The sealing member includes a sealing ring 73, and the bottom end of the sealing ring 73 is fixedly connected to the top of the receiving box 71. The two ends of the receiving box 71 are respectively fixedly connected with mounting blocks 72, and the tops of the mounting blocks 72 are respectively provided with mounting holes, and the interiors of the mounting holes are interspersed with mounting bolts 8 for mounting the mounting blocks 72 and the insulation tube 3.

[0028] Furthermore, the area of ​​the receiving groove is 1.2 times the area of ​​the perforation. The top of the receiving box 71 is arc-shaped, which fits the arc of the inner wall of the insulation tube 3. The sealing ring 73 is made of high-temperature resistant rubber material and is annular. The bottom end of the sealing ring 73 is fixedly connected to the top of the receiving box 71 by bonding. The mounting block 72 and the receiving box 71 are cast in one piece. The receiving box 71 and the mounting block 72 are both made of mica. After the temperature sensor 4 and the insulation tube 3 are installed, the receiving box 71 is installed. Two thread grooves for threaded insertion of the mounting bolts 8 are opened on the inner wall of the insulation tube 3, the mounting block 72 is fitted with the thread groove, and the mounting bolts 8 are inserted into the mounting hole and the thread groove, so that the receiving box 71 and the insulation tube 3 are fixedly connected, so that the receiving box 71 and the insulation tube 3 form an extrusion on the sealing ring 73, and the receiving groove covers the perforation, so that the heat emitted by the heating wire group 1 cannot enter the interior of the insulation tube 3 through the perforation.

[0029] 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, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or 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 hair dryer heating element that is convenient for accurate temperature measurement, comprising a heating wire group (1), wherein a heating bracket (2) for placing the heating wire group (1) is arranged inside the heating wire group (1), characterized in that: An insulating tube (3) for isolating heat is disposed at one end of the heating bracket (2); a temperature sensor (4) for monitoring the temperature of the heating wire group (1) is disposed on the outer wall of the insulating tube (3); a self-resetting fuse (5) for circuit breaking is disposed inside the insulating tube (3); a sealing component (7) for preventing heat from flowing inward is disposed at the bottom end of the temperature sensor (4); the sealing component (7) comprises a receiving box (71); a sealing member is disposed at the top end of the receiving box (71).

2. A hair dryer heating element that is easy to measure temperature accurately according to claim 1, characterized in that: One end of the heating bracket (2) is fixedly connected to the outer wall of the heat-insulating tube (3), and the other end of the heating bracket (2) is provided with a slot for installing the heating wire group (1).

3. A hair dryer heating element that is easy to measure temperature accurately according to claim 2, characterized in that: The slot is tooth-shaped.

4. A hair dryer heating element that is easy to measure temperature accurately according to claim 1, characterized in that: The outer wall of the heat-insulating tube (3) is provided with a through hole, the detection end of the temperature sensor (4) is connected to the through hole through insertion, and the mounting end of the temperature sensor (4) is fixedly connected to the inner wall of the heat-insulating tube (3).

5. A hair dryer heating element that is convenient for accurate temperature measurement according to claim 4, characterized in that: The temperature sensor (4) is arranged directly below the heating wire group (1).

6. A hair dryer heating element that is convenient for accurate temperature measurement according to claim 4, characterized in that: The top of the receiving box (71) is provided with a receiving groove, and the receiving groove is used to wrap the portion of the temperature sensor (4) located inside the insulation tube (3). The sealing member comprises a sealing ring (73), and the bottom end of the sealing ring (73) is fixedly connected to the top of the receiving box (71).

7. A hair dryer heating element that is convenient for accurate temperature measurement according to claim 6, characterized in that: The two ends of the receiving box (71) are respectively fixedly connected with mounting blocks (72), the top ends of the mounting blocks (72) are respectively provided with mounting holes, and mounting bolts (8) for mounting the mounting blocks (72) and the heat insulation cylinder (3) are inserted and connected inside the mounting holes.

8. A hair dryer heating element that is easy to measure temperature accurately according to claim 1, characterized in that: A controller (6) for circuit control is disposed inside the heat-insulating cylinder (3); the temperature sensor (4) and the self-resetting fuse (5) are both electrically connected to the controller (6); and the input end of the controller (6) is electrically connected to a power supply wire (9) for power input.

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