blower

Abstract

This utility model discloses a blower device, relating to the technical field of blower equipment. The blower device includes a housing, a fan assembly, a heating mechanism, and a monitoring component. The housing has a receiving cavity, and an air inlet and an air outlet communicating with the receiving cavity. The fan assembly is located within the receiving cavity and includes a fan body and fan blades. The fan body drives the fan blades to rotate, causing the fan blades to agitate the airflow towards the air outlet. The heating mechanism is installed in the housing and located at the air outlet, used to heat the airflow passing through the air outlet. The monitoring component is electrically connected to the heating mechanism and includes a silicon controlled rectifier (SCR) and a temperature measuring element. The SCR is located within the receiving cavity, between the fan blades and the heating mechanism. The temperature measuring element is heat-transfer connected to the heating mechanism to monitor its temperature. The technical solution provided by this utility model aims to achieve reliable monitoring of the heating mechanism of the blower equipment, ensuring the stable operation of the blower equipment.

Description

Technical Field

[0001] This utility model relates to the field of blower equipment technology, and in particular to a blower device. Background Technology

[0002] In related technologies, the blower can be equipped with heating mechanisms such as electric heating wires and heat exchangers at the air outlet end of the housing. The heating mechanism can be used to heat the airflow so that the blower can blow out hot air with a certain temperature.

[0003] However, most existing blower devices do not have proper monitoring of the heating mechanism, which makes the heating mechanism prone to overheating, affecting the safety performance of the blower device and reducing its practicality and reliability. Utility Model Content

[0004] The main purpose of this utility model is to provide a blower device that aims to reliably monitor the heating mechanism of the blower device and ensure its stable operation.

[0005] To achieve the above objectives, the present invention proposes a blower device comprising a housing, a fan assembly, a heating mechanism, and a monitoring component. The housing has a receiving cavity, and the housing has an air inlet and an air outlet communicating with the receiving cavity. The fan assembly is disposed within the receiving cavity and includes a fan body and fan blades. The fan body drives the fan blades to rotate, causing the fan blades to agitate the airflow towards the air outlet. The heating mechanism is installed in the housing and located at the air outlet, and is used to heat the airflow flowing through the air outlet. The monitoring component is electrically connected to the heating mechanism and includes a silicon controlled rectifier (SCR) and a temperature sensing element. The SCR is disposed within the receiving cavity and located between the fan blades and the heating mechanism. The temperature sensing element is thermally connected to the heating mechanism to monitor the temperature of the heating mechanism.

[0006] In one embodiment, the monitoring component further includes a control system electrically connected to the heating mechanism and the fan body, and the temperature measuring element is electrically connected to the control system.

[0007] In one embodiment, the housing includes a mounting structure disposed within the accommodating cavity. The mounting structure has a first end and a second end facing away from each other. The first end is disposed towards the air outlet. The mounting structure has an air outlet channel extending along the air outlet direction. The heating mechanism is disposed at the first end. The fan body is connected to the mounting structure. The fan blades are disposed opposite to the second end. The thyristor is connected to the mounting structure and disposed within the air outlet channel.

[0008] In one embodiment, the monitoring component further includes a temperature control switch, which is electrically connected to the heating mechanism and heat-transferringly connected to the heating mechanism. The temperature control switch is used to connect or disconnect the circuit of the heating mechanism.

[0009] In one embodiment, the monitoring component further includes a tilt switch disposed on the housing for monitoring the placement posture of the housing.

[0010] In one embodiment, the housing includes a head and a base, the head being connected to the base, the head having the receiving cavity, and the tilt switch being disposed on the base.

[0011] In one embodiment, the blower is further provided with a power supply circuit, which is connected to the heating mechanism, and the monitoring component further includes a fuse, which is disposed on the power supply circuit.

[0012] In one embodiment, the heating mechanism includes a heating element and a heat-conducting structure. The heating element includes a connecting element, a heating wire, an insulating heat-conducting layer, and a heat-conducting outer layer. The insulating heat-conducting layer wraps around the heating wire, and the heat-conducting outer layer wraps around the insulating heat-conducting layer. The connecting element is connected to both ends of the heating wire and extends into the insulating heat-conducting layer. The heat-conducting structure extends circumferentially along the heat-conducting outer layer and is heat-transferringly connected to the heating element. The heat-conducting structure has multiple heat-conducting fins on its periphery.

[0013] In one embodiment, the temperature sensing element is connected to the heat-conducting structure and is heat-transfer connected to the heating element.

[0014] In one embodiment, the heating element further includes an insulating member that wraps around the outer wall of the electrical contact and extends into the insulating and thermally conductive layer.

[0015] This invention's technical solution incorporates a monitoring component within the blower. By connecting a temperature sensing element to the heating mechanism, the heat generated by the heating mechanism can be monitored in real time. The heating mechanism can be adjusted based on the temperature information monitored by the sensing element to ensure stable operation within a specific heating temperature range, reducing the risk of overheating or thermal runaway. Furthermore, by placing a thyristor between the heating mechanism and the fan blades, the airflow from the fan passes through the thyristor before being heated by the heating mechanism and then blown out. This allows the airflow to dissipate heat from the thyristor, maintaining stable circuit continuity. In the event of a blower component failure or shutdown, the poor heat dissipation of the thyristor can cause it to disconnect the power supply to the heating mechanism, allowing it to stop promptly. This prevents heat buildup within the casing, which could potentially cause a complete blower malfunction, effectively reducing safety hazards and improving the practicality and structural reliability of the blower. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of an embodiment of the blower provided by this utility model;

[0018] Figure 2 for Figure 1 A cross-sectional view of an embodiment of the blower device;

[0019] Figure 3 for Figure 1 An exploded view of an embodiment of the blower device;

[0020] Figure 4 for Figure 1 An exploded view of another embodiment of the blower device;

[0021] Figure 5 for Figure 1 A cross-sectional view of an embodiment of the heating element of a blower.

[0022] Explanation of icon numbers:

[0023] 100. Blowing device; 10. Housing; 11. Head; 111. Receptacle; 113. Air inlet; 115. Air outlet; 117. Mounting structure; 1171. Air outlet duct; 13. Base; 30. Fan assembly; 31. Fan body; 33. Fan blades; 50. Heating mechanism; 51. Heating element; 511. Electrical connection; 513. Heating wire; 515. Insulating and heat-conducting layer; 517. Heat-conducting outer layer; 519. Isolation component; 53. Heat-conducting structure; 531. Heat-conducting fins; 70. Monitoring component; 71. SCR; 73. Temperature sensing element; 75. Temperature control switch; 77. Tilting switch.

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0026] It should be noted that if the embodiments of this utility model involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0027] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0028] In related technologies, blower devices can be equipped with heating mechanisms such as electric heating wires and heat exchangers at the air outlet end of the casing. These heating mechanisms heat the airflow, enabling the blower to blow out hot air at a certain temperature. However, most existing blower devices lack adequate monitoring of the heating mechanism, leading to overheating and compromising the safety performance of the blower, thus reducing its practicality and reliability. To address these issues, this utility model proposes a blower device 100.

[0029] Please see Figure 1 and Figure 2 In one embodiment of this utility model, the blower device 100 includes a housing 10, a fan assembly 30, a heating mechanism 50, and a monitoring component 70. The housing 10 has a receiving cavity 111, and the housing 10 has an air inlet 113 and an air outlet 115 communicating with the receiving cavity 111. The fan assembly 30 is disposed in the receiving cavity 111 and includes a fan body 31 and fan blades 33. The fan body 31 can drive the fan blades 33 to rotate, so that the fan blades 33 disturb the airflow towards the outlet. Air outlet 115 blows air; heating mechanism 50 is installed in housing 10 and located at air outlet 115. Heating mechanism 50 is used to heat the airflow passing through air outlet 115; monitoring component 70 is electrically connected to heating mechanism 50. Monitoring component 70 includes silicon controlled rectifier 71 and temperature measuring element 73. Silicon controlled rectifier 71 is located in accommodating cavity 111 and between fan blade 33 and heating mechanism 50; temperature measuring element 73 is heat-transfer connected to heating mechanism 50 and is used to monitor the temperature of heating mechanism 50.

[0030] In this application, the housing 10 can be formed by integral injection molding or metal stamping, allowing the housing 10 to adopt a hollow cylindrical structure design, thus forming a cavity 111 with a certain accommodating space inside the housing 10. The housing 10 can also be made of a material with good high-temperature resistance, so that the housing 10 can stably withstand the heat generated by the operation of the heating mechanism 50, and realize the stable operation of the blowing device 100. The air outlet 115 can be set at one end of the housing 10 to blow air horizontally through the air outlet 115, while the air inlet 113 can be set at the opposite end of the housing 10, so that the fan assembly 30 drives the air to pass straight through the housing 10 for blowing; or the air inlet 113 can be arranged around the periphery of the housing 10 to achieve a better air intake area for the blowing device 100. By using the fan assembly 30 disposed within the accommodating cavity 111, the fan body 31 can drive the fan blades 33 to rotate. The rotation of the fan blades 33 disturbs the air within the accommodating cavity 111, creating an airflow that flows towards the air outlet 115. The fan body 31 can be an external rotor fan or an internal rotor fan, etc. This application does not limit the shape and type of the fan body 31 and the fan blades 33. By providing a heating mechanism 50 at the air outlet 115, a certain amount of heat can be generated, allowing the airflow to be heated as it passes through the air outlet 115. This enables the blower device 100 to blow out hot air at a certain temperature, meeting user needs and improving the practicality of the blower device 100.

[0031] The monitoring component 70 is a component in the blower device 100 that monitors and regulates the operating conditions of the fan assembly 30 and the heating mechanism 50, so that the blower device 100 can operate under relatively stable conditions. The temperature sensing element 73 can be a temperature sensor, thermometer, or other temperature detection instrument. By directly contacting the heating mechanism 50 for heat conduction or indirectly conducting heat through a heat-conducting component, the temperature sensing element 73 can monitor the heating temperature of the heating mechanism 50 in real time. This allows for adjustments to the heating mechanism 50 based on the monitored temperature. For example, the heating power of the heating mechanism 50 can be adjusted to generate enough heat to meet user needs; or the operation of the heating mechanism 50 can be intervened in a timely manner to prevent overheating. The silicon controlled rectifier (SCR) 71 is a component installed on the power supply circuit connected to the heating mechanism 50, enabling the on / off control of the circuit connected to the heating mechanism 50. The thyristor 71 can generate a certain amount of heat when the circuit is kept connected. By placing the thyristor 71 between the fan blade 33 and the heating mechanism 50, the airflow disturbed by the fan blade 33 can first flow through the thyristor 71 and then flow to the heating mechanism 50 for heating. During this process, the airflow can carry away the heat generated by the thyristor 71 to achieve heat dissipation of the thyristor 71, so that the thyristor 71 can maintain the circuit connection at a certain temperature. Therefore, when the blower 100 experiences malfunctions such as the fan blade 33 detaching from the fan body 31 or the fan body 31 malfunctioning and shutting down, the fan assembly 30 does not generate an airflow to dissipate heat from the thyristor 71. This can cause the thyristor 71 to overheat and disconnect from the circuit, allowing the heating mechanism 50 to be physically controlled by the thyristor 71 to break the circuit and stop its operation in time. This prevents the heat generated by the heating mechanism 50 from being carried away by the airflow and accumulating in the accommodating cavity 111, thus preventing the heat from affecting the fan assembly 30 and reducing the safety hazards of the blower 100.

[0032] Therefore, under the monitoring component 70, real-time temperature monitoring of the heating mechanism 50 can be achieved. Dynamic power regulation of the heating mechanism 50 can be implemented based on the monitored temperature signal to prevent overheating. Simultaneously, the physical mechanical switch of the thyristor 71 controls the on / off state of the power supply circuit connected to the heating mechanism 50. This allows the thyristor 71 to promptly disconnect the heating mechanism 50 in case of a malfunction in the blower device 100, reducing the potential safety hazards caused by system signal control failure and effectively improving the safety and reliability of the blower device 100. It should be noted that when the blower device 100 needs to perform a non-heating blowing function, the heating mechanism 50 can stop operating, and no current flows through the thyristor 71, preventing it from generating heat. This allows the airflow generated by the turbulence of the fan component 30 to maintain a lower temperature before being blown out from the air outlet 115, enabling the blower device 100 to achieve a wider temperature control range and further improving its usability and reliability.

[0033] The technical solution of this utility model is to set a monitoring component 70 in the blower device 100, and use the temperature measuring element 73 to heat transfer the heating mechanism 50 to monitor the heat temperature generated by the heating mechanism 50 in real time. The heating mechanism 50 can be adjusted according to the temperature information monitored by the temperature measuring element 73 so that the heating mechanism 50 can be stably maintained within a certain heating temperature range, thereby reducing the occurrence of overheating or thermal runaway of the heating mechanism 50. By placing a thyristor 71 between the heating mechanism 50 and the fan blade 33, the airflow blown out by the rotating fan blade 33 can pass through the thyristor 71 and then through the heating mechanism 50 for heating before being blown out. This allows the airflow to dissipate heat from the thyristor 71, maintaining stable circuit connectivity. Furthermore, when the fan assembly 30 malfunctions or stops, the poor heat dissipation of the thyristor 71 can cause it to disconnect the power supply to the heating mechanism 50, allowing the heating mechanism 50 to stop promptly. This prevents heat generated by the heating mechanism 50 from accumulating inside the housing 10, which could potentially cause a malfunction of the entire blower device 100. This effectively reduces the safety hazards of the blower device 100 and improves its practicality and structural reliability.

[0034] In one embodiment of the present invention, the monitoring component 70 further includes a control system, which is electrically connected to the heating mechanism 50 and the fan body 31, and the temperature measuring element 73 is electrically connected to the control system.

[0035] In this embodiment, the control system can refer to an electronic module used to coordinate the operation of the heating mechanism 50 and the fan. Specifically, it can be implemented using a microcontroller or integrated circuit. The control system can be electrically connected to the heating mechanism 50 and the fan body 31 through wires, circuit boards or wireless communication modules to establish electrical signal transmission paths, as well as to be electrically connected to the temperature measuring element 73, so as to achieve reliable control of the entire blowing device 100.

[0036] Specifically, the control system can form a closed-loop control circuit with the heating mechanism 50 and the fan via electrical connection. When the temperature sensing element 73 detects that the temperature of the heating mechanism 50 exceeds a certain set threshold, the control system can obtain the operating status of the fan body 31 at this time. Based on the temperature signal and the operating status of the fan body 31, the control system can adjust the power of the heating mechanism 50 to effectively prevent overheating or thermal runaway. If the temperature drops back to a safe range, the control system can readjust the power of the heating mechanism 50 and the fan body 31 according to the desired airflow effect, so that the blower 100 can better blow out an airflow with a certain amount of heat and speed to meet the user's needs. Therefore, under the coordinated control of the control system, the entire process of adjusting the heating mechanism 50 by the blower 100 can be done automatically without manual intervention, further improving the ease of operation and practicality of the blower 100.

[0037] See Figures 2 to 4 In one embodiment of the present invention, the housing 10 includes a mounting structure 117, which is disposed in the accommodating cavity 111. The mounting structure 117 has a first end and a second end facing away from each other. The first end is disposed towards the air outlet 115. The mounting structure 117 is provided with an air outlet channel 1171 extending along the air outlet direction. The heating mechanism 50 is disposed at the first end. The fan body 31 is connected to the mounting structure 117. The fan blade 33 is disposed opposite to the second end. The thyristor 71 is connected to the mounting structure 117 and disposed in the air outlet channel 1171.

[0038] In this embodiment, the mounting structure 117 refers to a support component disposed inside the accommodating cavity 111 for fixing the fan body 31 and the heating mechanism 50. Specifically, it can be implemented using components such as a metal frame or a plastic bracket. This application does not limit the structural form of the mounting structure 117. The mounting structure 117 can form an air outlet channel 1171 surrounding the fan body 31. This air outlet channel 1171 can extend from the second end of the mounting structure 117 to the first end, that is, it can extend along the air outlet direction within the housing 10. This allows the air outlet channel 1171 to avoid the airflow disturbed by the fan blades 33, ensuring that the airflow can stably flow through the air outlet channel 1171 to the air outlet 115, thus guaranteeing the stable operation of the blowing device 100.

[0039] By connecting the thyristor 71 to the mounting structure 117 and placing the thyristor 71 in the air outlet channel 1171, the airflow can stably flow over the thyristor 71, allowing the airflow to carry away the heat from the thyristor 71 before passing through the heating mechanism 50 for heating. This ensures that the thyristor 71 can monitor the operating condition of the fan assembly 30. The mounting structure 117 can be equipped with a mounting base corresponding to the size of the thyristor 71 in the air outlet channel 1171. This mounting base can be a groove, a clip, or a clamp, etc., which can be used to limit and fix the thyristor 71, so that the thyristor 71 can be stably placed in the air outlet channel 1171. This helps to reduce the chance of the airflow blowing over the thyristor 71, further improving the overall structural stability and reliability of the blowing device 100.

[0040] See Figure 1 and Figure 3 In one embodiment of the present invention, the monitoring component 70 further includes a temperature control switch 75, which is electrically connected to the heating mechanism 50 and heat-transfer connected to the heating mechanism 50. The temperature control switch 75 is used to connect or disconnect the circuit of the heating mechanism 50.

[0041] In this embodiment, the temperature control switch 75 can refer to an automatic protection device that controls the on / off state of the circuit through temperature changes. Specifically, it can be implemented using components such as a bimetallic strip temperature controller or a thermistor switch. This application does not limit the specific structural form of the temperature control switch 75. Heat can be transferred by direct contact between the temperature control switch 75 and the heating mechanism 50, or by indirect heat conduction between the temperature control switch 75 and the heating mechanism 50. This allows the temperature control switch 75 to monitor the heat generated by the heating mechanism 50 in real time, enabling it to automatically cut off the circuit when the temperature of the heating mechanism 50 exceeds a certain preset threshold, effectively preventing overheating or thermal runaway of the heating mechanism 50.

[0042] Specifically, by setting a temperature control switch 75, the temperature of the heating mechanism 50 can be monitored in real time. This allows the power supply circuit of the heating mechanism 50 to be quickly disconnected when it reaches a certain temperature threshold. This avoids the delay in signal regulation of the heating mechanism 50 by the temperature sensing element 73, thus better reducing the safety hazards of the blower device 100. The cooperation between the temperature sensing element 73 and the temperature control switch 75 enables the heating structure to better regulate the temperature based on the temperature, further preventing the heating mechanism 50 from overheating or thermal runaway from affecting the blower device 100, and achieving more stable and reliable automated control of the blower device 100.

[0043] See Figure 2 In one embodiment of the present invention, the monitoring component 70 further includes a tilt switch 77, which is disposed on the housing 10 and used to monitor the placement posture of the housing 10.

[0044] In this embodiment, the tilt switch 77 can refer to a device that triggers the switching of a circuit through a change in physical posture. Specifically, it can be implemented using a mercury switch or a ball-type gravity switch, etc. This application does not limit the specific structural form of the tilt switch 77. When the blower device 100 is tilted or falls due to external force during operation, the tilt switch 77 can be triggered to respond. In this way, when the tilt angle of the housing 10 exceeds a certain tilt angle threshold, the tilt switch 77 can be triggered to disconnect the circuit connected to the heating mechanism 50 and the circuit connected to the fan body 31, thereby forcibly stopping the heating mechanism 50 and the fan assembly 30. This avoids the possibility of fire or other safety hazards caused by the continued operation of the fan body 31 and the heating mechanism 50 after the blower device 100 tilts, further improving the safety and reliability of the blower device 100. In addition, the tilt switch 77 can also be reset after the posture is straightened, so that when the blower 100 returns to the normal placement posture from the tilted posture, the tilt switch 77 can reconnect the circuit of the heating mechanism 50 and the blower body 31, without the need to replace the tilt switch 77, thus ensuring the reliable operation of the blower 100.

[0045] Specifically, the tilt switch 77 can be connected in series with the power supply circuit of the heating mechanism 50 and the fan body 31 via a wire. When the blower 100 is in a normal upright position, the internal contacts of the tilt switch 77 are closed, and the circuit remains conductive. If the blower 100 tilts or leans due to external force, the internal contacts of the tilt switch 77 will disengage under the influence of gravity, breaking the circuit. This will stop the heating mechanism 50 from working, and the fan body 31 will also shut down simultaneously. This allows for real-time monitoring of the placement posture of the blower 100, immediately cutting off the power to the heating mechanism 50 and the fan body 31 when tilting occurs. This prevents high-temperature components from contacting flammable materials or continuing to operate, thus avoiding safety accidents and significantly improving the safety of the device. It also further enhances the practicality and structural reliability of the blower 100.

[0046] See Figure 2 In one embodiment of the present invention, the housing 10 includes a head 11 and a base 13. The head 11 is connected to the base 13. The head 11 has a receiving cavity 111. The tilt switch 77 is disposed on the base 13.

[0047] In this embodiment, the base 13 refers to the component that supports the head 11 and maintains the stable placement of the device. Specifically, it can be implemented using a plastic or metal structure with a counterweight. The base 13 and the head 11 can be connected by a rotating shaft or a snap-fit, or the base 13 can be designed as a combination of a seat plate and a support rod, with a swing mechanism at the end of the support rod connected to the head 11. This allows the base 13 to drive the head 11 to rotate and swing in both the horizontal and vertical directions, thereby increasing the blowing range of the blower 100. Of course, there are many other possible structural forms for the base 13, and this application does not limit them.

[0048] By placing the tilt switch 77 on the base 13, the tilt switch 77 can be prevented from being affected by the rotation and swaying of the head 11. In addition, since the base 13 is in direct contact with the support surface, its attitude change sensitivity is higher than that of the head 11. The arrangement of the tilt switch 77 on the base 13 can accurately distinguish between normal angle adjustment and dangerous tilting state, ensuring that the circuit is cut off only when the blower 100 completely loses stability. This not only ensures the safety of use, but also avoids the impact of frequent malfunctions on the user experience, further improving the practicality and structural reliability of the blower 100.

[0049] In one embodiment of the present invention, the blower 100 is further provided with a power supply circuit, which is connected to the heating mechanism 50, and the monitoring component 70 also includes a fuse, which is located on the power supply circuit.

[0050] In this embodiment, the power supply circuit refers to the transmission circuit that provides electrical energy to the heating mechanism 50. Specifically, it can be implemented using wires, connectors, power interface combinations, etc. The power supply circuit can transfer electrical energy from an external power source to the heating mechanism 50, ensuring the stable operation of the heating mechanism 50. The fuse is a current overload protection element, specifically implemented using a fusible fuse or a resettable fuse. When the current in the power supply circuit exceeds a certain set threshold, the fuse can melt or disconnect to cut off the power supply circuit, preventing overheating of the heating mechanism 50 or circuit damage due to abnormal current.

[0051] Specifically, after the power supply circuit is connected to an external power source, it sequentially connects to a fuse and the heating mechanism 50. The fuse is connected in series in the main path of the power supply circuit to monitor the current flowing through the circuit in real time. When the current in the heating mechanism 50 exceeds the safe range due to a short circuit, overload, or other abnormal conditions, the fuse disconnects the power supply circuit by melting or breaking, thereby preventing the current from continuing to flow to the heating mechanism 50. In this process, the physical location of the fuse is directly integrated into the power supply circuit, eliminating the need for an additional independent control module, which simplifies the circuit structure and enables rapid response to abnormal conditions.

[0052] Therefore, the technical solution of this application can realize temperature monitoring and control of the heating mechanism 50 by using the temperature sensing element 73, effectively preventing the heating mechanism 50 from overheating or thermal runaway; it can realize mechanical on / off circuit control when the fan assembly 30 fails by using the thyristor 71, effectively preventing the heat emitted by the heating mechanism 50 from accumulating in the accommodating cavity 111; and it can use the fuse to monitor the power supply circuit of the heating mechanism 50 in real time, effectively preventing the heating mechanism 50 from being damaged or overheating when the circuit fails, so that the blower 100 can achieve more reliable system safety control, and further improve the structural stability and reliability of the blower 100.

[0053] See Figure 3 and Figure 5 In one embodiment of the present invention, the heating mechanism 50 includes a heating element 51 and a heat-conducting structure 53. The heating element 51 includes a connecting element 511, a heating wire 513, an insulating heat-conducting layer 515, and a heat-conducting outer layer 517. The insulating heat-conducting layer 515 wraps around the heating wire 513, and the heat-conducting outer layer 517 wraps around the insulating heat-conducting layer 515. The connecting element 511 is connected to both ends of the heating wire 513 and extends into the insulating heat-conducting layer 515. The heat-conducting structure 53 extends circumferentially along the heat-conducting outer layer 517 and is heat-transferringly connected to the heating element 51. A plurality of heat-conducting fins 531 are provided on the periphery of the heat-conducting structure 53.

[0054] It should be noted that in the heating element, the connecting part 511 can be made of a conductive material for welding or plugging with the power cord, for example, it can be made of steel and nickel-plated to ensure that the connecting part 511 has a certain strength and corrosion resistance. The heating wire 513 can be made of a metal material with good electrical conductivity and heating performance, such as iron-chromium-aluminum alloy or nickel-chromium alloy. The heat-conducting outer layer 517 can be made of a tubular structure of a metal or other material with good thermal conductivity, such as a copper tube or aluminum tube. The heating wire 513 is housed in the tubular structure, and the inside of the tube is filled with an insulating material with good thermal conductivity to prevent leakage, such as magnesium oxide or aluminum oxide. The heating element reduces the risk of leakage by wrapping the heating wire 513 with an insulating and thermally conductive layer 515. A thermally conductive outer layer 517 is provided outside the insulating and thermally conductive layer 515 to house the insulating and thermally conductive material of the layer and protect the heating wire 513 from accidental damage. The thermally conductive outer layer 517 wraps around the periphery of the insulating and thermally conductive layer 515, and may have flanges at its ends to wrap around the two end faces of the insulating and thermally conductive layer 515, but without contacting the electrical connector 511. Furthermore, the insulating and thermally conductive layer 515 isolates the heating wire 513 from the air, preventing oxidation and further extending its service life.

[0055] Furthermore, the heating element can generate a certain amount of heat energy by connecting the heating wire 513 to electricity, and the heat energy is transferred to the heat-conducting component through the insulating heat-conducting layer 515 and the heat-conducting outer layer 517. The heat dissipation area is increased by the multiple heat dissipation fins on the outer periphery of the heat-conducting component, so that the heating mechanism 50 can better heat the airflow at the air outlet 115, ensuring a better hot air blowing effect of the blower 100. At this time, the heat-conducting outer layer 517 is welded and fixed to the inner wall of the receiving groove formed by the heat-conducting component. Under the action of the insulating heat-conducting layer 515, the leakage of electricity from the heating element to the heat-conducting component can be effectively prevented, so that there is only a heat transfer relationship between the heating element and the heat-conducting component, ensuring the stable operation of the heating mechanism 50, and further improving the structural stability and reliability of the blower 100.

[0056] The blower device 100 can connect the power supply circuit to the connector 511 so that electrical energy can be transmitted to the heating wire 513 through the connector 511, so that the heating wire 513 generates a certain amount of heat under the action of electrical energy; while the temperature measuring element 73 can be connected to the heat-conducting outer layer 517 of the heating element 51 or to the heat-conducting fins 531 for heat transfer, so as to realize the real-time temperature measurement and control of the temperature measuring element 73 and the heating mechanism 50, and further improve the structural stability and reliability of the blower device 100.

[0057] Further, see Figure 5 In one embodiment of the present invention, the heating element 51 further includes an isolation element 519, which wraps around the outer wall of the electrical contact element 511 and extends into the insulating and heat-conducting layer 515.

[0058] In this embodiment, the gaps at both ends of the heat-conducting outer layer 517 can be sealed by the insulating member 519, reducing the risk of oxidation of the heating wire 513 or short circuits and leakage. Therefore, the heat-conducting outer layer 517 can be sealed to the periphery of the insulating member 519, or the end of the heat-conducting outer layer 517 can be wrapped around the end face of the insulating member 519 without contacting the electrical connection member 511, thus ensuring stable heating of the heating element.

[0059] The insulating element 519 can be made of ceramic material, formed into a columnar or bead-like shape, and sealed at both ends of the heat-conducting outer tube. Ceramic is a good electrical insulating material, which can prevent current from leaking from the heating wire 513 of the heating element to the external metal casing or other conductive parts, thereby avoiding short circuits and electric shock hazards. Furthermore, ceramic is stable at high temperatures and is not easily melted or deformed, thus helping to improve the overall safety performance of the heating element.

[0060] See Figure 3 and Figure 4 In one embodiment of this utility model, the temperature sensing element 73 is connected to the heat-conducting structure 53 and is heat-transfer connected to the heating element 51.

[0061] In this embodiment, by connecting and installing the temperature sensing element 73 to the heat-conducting structure 53, the heat-conducting structure 53 can stably support the temperature sensing element 73, and the temperature sensing head of the temperature sensing element 73 can be made to contact the heating element 51 to achieve temperature measurement, ensuring stable temperature measurement and control of the heating mechanism 50 by the temperature sensing element 73. In this way, the temperature sensing element 73 and the heating mechanism 50 can form a more stable overall structure, ensuring the monitoring accuracy of the temperature sensing element 73; and by installing and connecting the temperature sensing element 73 on the heat-conducting structure 53, the number of connecting parts on the heating element 51 can be reduced, ensuring stable heating of the heating mechanism 50.

[0062] Furthermore, in some embodiments, the heat-conducting structure 53 is provided with a connecting structure, which is located between two adjacent heat dissipation fins; the temperature sensing element 73 is connected to the connecting structure and is located on the side of the heating element 51 facing the air outlet 115.

[0063] In this embodiment, the connection structure can be a bolt post between two adjacent heat dissipation fins. Screws or other fastening structures can be used to pass through the temperature sensing element 73 and insert it into the bolt post, achieving stable assembly of the temperature sensing element 73 and ensuring its stable operation. Alternatively, the connection structure can be a platform between two adjacent heat dissipation fins. Screws or other fastening structures can be used to pass through the temperature sensing element 73 and insert it into the platform, or a protrusion can be provided on the platform for inserting the temperature sensing element 73 for installation. Furthermore, compared to the installation method of pasting the temperature sensing element 73 onto the heating element, this method can better improve the assembly stability and controllability of the temperature sensing element 73, preventing it from falling off. This allows the temperature sensing element 73 to stably and accurately measure the temperature of the heating element 51, ensuring a more stable and reliable operation of the heating mechanism 50.

[0064] Furthermore, when the blower device 100 also includes a temperature control switch 75, the temperature control switch 75 can also be connected to the connection structure of the heat-conducting structure 53, and the temperature control switch 75 can be set on the side of the heating element 51 facing the air outlet 115, so as to achieve a stable installation of the temperature control switch 75, so that the temperature control switch 75 can be more stably connected to the heating element 51 for heat transfer, thereby achieving over-temperature power-off protection for the heating mechanism 50, improving the accuracy of the control of the heating mechanism 50, and further improving the practicality and structural reliability of the blower device 100.

[0065] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A blow-off device, characterized in that include: A housing, wherein a receiving cavity is provided inside the housing, and an air inlet and an air outlet communicating with the receiving cavity are provided on the housing; A fan assembly is disposed within the accommodating cavity. The fan assembly includes a fan body and fan blades. The fan body can drive the fan blades to rotate, so that the fan blades disturb the airflow and blow air toward the air outlet. A heating mechanism, mounted on the housing and located at the air outlet, is used to heat the airflow passing through the air outlet; and A monitoring component is electrically connected to the heating mechanism. The monitoring component includes a silicon controlled rectifier (SCR) and a temperature measuring element. The SCR is disposed within the accommodating cavity and located between the fan blade and the heating mechanism. The temperature measuring element is thermally connected to the heating mechanism to monitor the temperature of the heating mechanism.

2. The blow-off device according to claim 1, wherein The monitoring component also includes a control system, which is electrically connected to the heating mechanism and the fan body, and the temperature measuring element is electrically connected to the control system.

3. The blowoff device as claimed in claim 1, wherein The housing includes a mounting structure disposed within the accommodating cavity. The mounting structure has a first end and a second end facing away from each other. The first end is disposed towards the air outlet. The mounting structure is provided with an air outlet channel extending along the air outlet direction. The heating mechanism is located at the first end, the fan body is connected to the mounting structure, the fan blades are arranged opposite to the second end, and the thyristor is connected to the mounting structure and located in the air outlet channel.

4. The hair drying device of claim 1, wherein The monitoring component also includes a temperature control switch, which is electrically connected to the heating mechanism and heat-transferringly connected to the heating mechanism. The temperature control switch is used to connect or disconnect the circuit of the heating mechanism.

5. The blower device as described in claim 1, characterized in that, The monitoring component also includes a tilt switch, which is installed in the housing to monitor the orientation of the housing.

6. The hair drying device of claim 5, wherein The housing includes a head and a base, the head is connected to the base, the head has the receiving cavity, and the tilt switch is disposed on the base.

7. The hair drying device of claim 1, wherein The blower also includes a power supply circuit, which is connected to the heating mechanism. The monitoring component also includes a fuse, which is located on the power supply circuit.

8. The hair drying device of claim 1, wherein The heating mechanism includes: A heating element, comprising a connecting element, a heating wire, an insulating and heat-conducting layer, and a heat-conducting outer layer, wherein the insulating and heat-conducting layer wraps around the heating wire, the heat-conducting outer layer wraps around the insulating and heat-conducting layer, and the connecting element is connected to both ends of the heating wire and extends into the insulating and heat-conducting layer; A heat-conducting structure is provided, which extends circumferentially along the outer heat-conducting layer and is heat-transferringly connected to the heating element. The periphery of the heat-conducting structure is provided with multiple heat-conducting fins.

9. The hair drying device of claim 8, wherein The temperature sensing element is connected to the heat-conducting structure and is heat-transferringly connected to the heating element.

10. The hair drying device of claim 8, wherein The heating element also includes an insulating element, which wraps around the outer wall of the electrical contact element and extends into the insulating and heat-conducting layer.

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