Temperature control device of ceramic PTC electric heater
By designing the temperature control device of the return spring and temperature sensor in the ceramic PTC electric heater, the problems of loose parts and high temperature impact of the equipment in complex environments are solved, and stable work and long-term use are achieved under high temperature and vibration.
Patent Information
- Application Number
- CN202422532919.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-10-21
AI Technical Summary
Existing ceramic PTC electric heaters are susceptible to external shocks or vibrations in complex and changing environments, causing loose internal parts, and high-temperature environments pose a challenge to equipment performance and life, affecting normal operation.
A temperature control device including a base, wiring base, heat conduction pipe, positioning plate, heat dissipation assembly and temperature sensor was designed. The shock absorption capacity was enhanced by the return spring, and the temperature was monitored in real time through the temperature sensor and automatic temperature control was realized through the controller to ensure the stable operation of the equipment in high temperature and vibration environments.
It improves the protection performance and stable working ability of the equipment in vibration and high temperature environments, extends the service life, and ensures stable supply of power supply and automatic temperature control.
Smart Images
Figure CN223246941U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of PTC electric heaters, in particular to a temperature control device of a ceramic PTC electric heater. Background Art
[0002] Ceramic PTC electric heaters are widely used in modern electronic equipment and industrial applications due to their self-limiting temperature characteristics and efficient heating performance. However, with the continuous advancement of technology and the diversification of application scenarios, the requirements for temperature control devices of ceramic PTC electric heaters are also increasing.
[0003] On the one hand, equipment often needs to be used in complex and changing environments, such as being subjected to external shock or vibration, which may cause internal parts to loosen and thus affect their service life; on the other hand, high temperature environments pose severe challenges to the performance and life of temperature control devices. Excessive temperatures can easily lead to a decline in equipment performance and even affect normal operation. Utility Model Content
[0004] The utility model provides a temperature control device for a ceramic PTC electric heater, which aims to solve the problem that existing PTC electric heaters are often subjected to external impact or vibration when used in complex and changeable environments, which may cause internal parts to loosen. At the same time, high temperature environments also pose a challenge to the performance and life of the equipment. Excessive temperature can easily lead to a decline in equipment performance and even affect normal operation.
[0005] The utility model is implemented as follows: a temperature control device for a ceramic PTC electric heater comprises a base; a terminal block provided above the base, the upper end surface of the terminal block being open; a heat-insulating layer provided on the inner surface of the terminal block; a heat-conducting pipe provided in the middle of the terminal block, the heat-conducting pipe being consistent with the length direction of the terminal block; a heat-conducting cavity being provided in the heat-conducting pipe, and a PTC heating core being provided in the heat-conducting cavity;
[0006] Positioning plates are arranged on both sides of the heat pipe; a heat dissipation component is arranged between every two adjacent positioning plates, and the heat dissipation component includes a plurality of heat dissipation fins, and a plurality of the heat dissipation fins are corrugated; a group of heat dissipation fans are arranged on the inner side of the base opposite to the terminal block; and heat dissipation fins are arranged on the bottom side of the terminal block.
[0007] Preferably, a shock-absorbing block is provided at the bottom position of the base, and guide grooves are provided on the inner walls on both sides opposite to each other. A connecting plate is slidably fitted between the two guide grooves, and a plurality of return springs are provided on the side of the connecting plate opposite to the base, and dampers are integrated in the plurality of return springs.
[0008] Preferably, a safety component is provided on the inner wall of the wiring seat, and the installation component includes a thermistor, a temperature sensor and a controller, and the controller is electrically connected to the thermistor and the temperature sensor.
[0009] Preferably, an extraction electrode is provided on the outer end side of the wiring seat, and a power line is electrically connected to the extraction electrode.
[0010] Preferably, an insulating film is provided on the inner end side of the wiring seat.
[0011] Preferably, the bottom of the base is arranged on the upper surface of the connecting plate.
[0012] Compared with the prior art, the embodiments of the present application have the following beneficial effects:
[0013] First, this device effectively protects the terminal block and its internal parts by providing a reset spring. This design ensures that when the device is subjected to external force, it can utilize the rebound characteristics of the reset spring to slide along the guide groove, and utilize the stored potential energy to restore the base to its original state after the external force disappears, thereby maintaining a relatively stable working state. This ingenious design not only enhances the shock-absorbing and rebound capabilities of the device, but also significantly improves its protection performance and stable working ability in a vibration environment.
[0014] Second: This device improves the protection performance and stable working ability of the device in high temperature environment. The temperature sensor monitors the ambient temperature in real time and controls the heater through the controller to achieve the purpose of automatic temperature control. In this way, the terminal block not only realizes the power switching and power supply functions, but also ensures the long service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0016] Figure 2 It is a front view of the utility model;
[0017] Figure 3 It is a front structural schematic diagram of the utility model;
[0018] Figure 4 It is a top view of the utility model;
[0019] Figure 5 This is a schematic diagram of the top view of the structure of the utility model;
[0020] In the figure: 1. Base; 2. Terminal block; 3. Heat pipe; 4. PTC heating core; 5. Positioning plate; 6. Heat sink; 7. Cooling fan; 8. Cooling fins; 9. Shock absorber; 10. Guide groove; 11. Connecting plate; 12. Reset spring; 13. Safety component; 14. Lead-out electrode; 15. Power cord; 16. Insulation film. DETAILED DESCRIPTION
[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.
[0022] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0023] The present invention provides a temperature control device for a ceramic PTC electric heater. Figure 1-5 As shown, it includes a base 1; a terminal block 2 provided above the base 1, and the upper end surface of the terminal block 2 is open; an insulation layer provided on the inner surface of the terminal block 2; a heat pipe 3 provided in the middle of the terminal block 2, and the length direction of the heat pipe 3 is consistent with that of the terminal block 2; a heat conduction cavity is provided in the heat conduction cavity, and a PTC heating core 4 is provided in the heat conduction cavity; positioning plates 5 are provided on both sides of the heat conduction tube 3; a heat dissipation component is provided between every two adjacent positioning plates 5, and the heat dissipation component includes a plurality of heat sinks 6, and a plurality of the heat sinks 6 are corrugated; a group of cooling fans 7 are provided on the inner side of the base 1 opposite to the terminal block 2; and heat dissipation fins 8 are provided on the bottom side of the terminal block 2.
[0024] It should be noted that, since the existing PTC electric heaters are often subjected to external shocks or vibrations when used in complex and changeable environments, the internal parts may become loose. At the same time, high temperature environments also pose a challenge to the performance and life of the equipment. Excessive temperature can easily lead to a decline in equipment performance and even affect normal operation. This solution effectively protects the terminal block 2 and its internal parts by setting a reset spring 12, enhances the shock absorption and rebound ability of the device, and significantly improves its protection performance and stable working ability in a vibration environment; at the same time, the ambient temperature is monitored in real time by a temperature sensor, and the heater is controlled by a controller, achieving the purpose of automatic temperature control, thereby ensuring Long service life of the equipment; this design not only maintains a relatively stable working state of the device, but also improves its protection performance and stable working ability in high temperature environment; by setting the reset spring 12, the terminal block 2 and its internal parts are effectively protected, the shock absorption and rebound ability of the device are enhanced, and the protection performance and stable working ability in a vibration environment are significantly improved; at the same time, the device also improves the protection performance and stable working ability in a high temperature environment; the temperature sensor monitors the ambient temperature in real time, and controls the heater through the controller to achieve the purpose of automatic temperature control; in this way, the terminal block 2 not only realizes the power switching and power supply functions, but also ensures the long service life of the equipment.
[0025] Specifically, in this embodiment, the present solution mainly includes a base 1; when the power is turned on, current begins to flow through the PTC heating core 4; due to the unique properties of the PTC material, its resistance value increases sharply with the increase in temperature, so the PTC heating core 4 starts to heat up quickly; at room temperature, the resistance of the PTC material is relatively small, so the initial current is large, which enables the PTC heating core 4 to heat up quickly; as the temperature continues to rise, the resistance value of the PTC material also increases rapidly, gradually entering the transition zone; in the transition zone, the current passing through the PTC heating element becomes very small, which enables the surface temperature of the PTC heating element to be maintained at a relatively constant value, and this constant value is mainly related to the Curie temperature of the PTC material and the applied voltage, and has little to do with the ambient temperature;
[0026] The heat generated by the heating core is effectively transferred to the heat conduction cavity in the terminal block 2 through the heat pipe 3, and the heat loss is reduced by the design of the thermal insulation layer. To further improve the heat dissipation efficiency, the heat is also dissipated through the heat dissipation components on both sides of the positioning plate 5. The corrugated heat sink 6 in these heat dissipation components increases the heat dissipation area, thereby effectively improving the heat dissipation efficiency.
[0027] At the same time, the heat dissipation fins 8 on the bottom side of the terminal block 2 can also synchronously absorb and dissipate the generated heat; in order to accelerate the dissipation of heat, the cooling fan 7 also starts working, which accelerates the air flow and takes away more heat, thereby ensuring that the entire temperature control device can maintain a stable working state even in a high temperature environment.
[0028] In a further preferred embodiment of the present invention, Figure 3 As shown, a shock-absorbing block 9 is provided at the bottom position of the base 1, and guide grooves 10 are provided on the inner walls on both sides of the shock-absorbing block 9. A connecting plate 11 is slidably fitted between the two guide grooves 10, and a plurality of return springs 12 are provided on the side of the connecting plate 11 opposite to the base 1, and dampers are integrated in the plurality of return springs 12.
[0029] In this embodiment, the rebound characteristics of the return spring 12 enable the base 1 to slide along the guide groove 10 when encountering external force, and use the stored potential energy to restore the base 1 to its original state after the external force disappears. The characteristics of the damper further enhance the shock-absorbing and rebound capabilities of the base 1, thereby improving the protective performance of the terminal block 2.
[0030] In a further preferred embodiment of the present invention, Figure 5 As shown, a safety component 13 is provided on the inner wall of the wiring seat 2. The installation component includes a thermistor, a temperature sensor and a controller. The controller is electrically connected to the thermistor and the temperature sensor.
[0031] In this embodiment, the temperature sensor (PT100) is used to automatically sample and monitor the ambient temperature of the terminal block 2 in real time. When the ambient temperature changes, the resistance of the thermistor (MF52) will change accordingly, thereby changing the signal voltage transmitted by the sensor to the controller. Based on the change in this signal voltage, the controller compares and calculates, and outputs a corresponding control signal to the manipulator. The manipulator (STM32) then controls the heater to achieve the purpose of automatic temperature control.
[0032] In a further preferred embodiment of the present invention, Figure 1-5 As shown, an extraction electrode 14 is provided on the outer end side of the wiring base 2 , and a power line 15 is electrically connected to the extraction electrode 14 .
[0033] In this embodiment, when the terminal block 2 is connected to the negative pole of the external power supply, it forms an external power supply path with a specific pin, thereby realizing the power switching and power supply functions. In this process, the terminal block 2 realizes effective control and management of the power supply through its designed circuits and contacts, ensuring a stable power supply and smooth access to the external power supply.
[0034] In a further preferred embodiment of the present invention, Figure 3 As shown, an insulating film 16 is provided on the inner end side of the wiring base 2 .
[0035] In this embodiment, the insulating film 16 can also protect the metal components inside the wiring base 2 from being corroded by the external environment, thereby extending the service life.
[0036] In a further preferred embodiment of the present invention, Figure 3 As shown, the bottom of the base 1 is arranged on the upper surface of the connecting plate 11 .
[0037] In this embodiment, this arrangement enables the terminal block 2 and the base 1 to effectively absorb vibration when subjected to vibration, thereby protecting the internal electrical connections from damage and ensuring the stable operation of the electrical equipment.
[0038] Working principle: When the power line 15 is connected, current begins to flow through the PTC heating core 4; due to the unique properties of the PTC material, its resistance value increases sharply as the temperature rises; therefore, the PTC heating core 4 starts to heat up quickly; at room temperature, the resistance of the PTC material is relatively small, so the initial current is large, which enables the PTC heating core 4 to heat up quickly; as the temperature continues to rise, the resistance value of the PTC material also increases rapidly, gradually entering the transition zone; in the transition zone, the current passing through the PTC heating element becomes very small, which enables the surface temperature of the PTC heating element to be maintained at a relatively constant value; this constant value is mainly related to the Curie temperature of the PTC material and the applied voltage, and has little to do with the ambient temperature;
[0039] The heat generated by the heating core is effectively transferred to the heat conduction cavity in the terminal block 2 through the heat pipe 3, and the design of the insulation layer reduces heat loss. To further improve the heat dissipation efficiency, the heat is also dissipated through the heat dissipation components on both sides of the positioning plate 5. The corrugated heat sink 6 in these heat dissipation components increases the heat dissipation area, thereby effectively improving the heat dissipation efficiency. At the same time, the heat dissipation fins 8 on the bottom side of the terminal block 2 can also simultaneously absorb and dissipate the generated heat. To accelerate the dissipation of heat, the cooling fan 7 also starts to work, which accelerates the air flow and removes more heat, thereby ensuring that the entire temperature control device can maintain a stable working state even in a high temperature environment.
[0040] In addition, the rebound characteristics of the return spring 12 enable the base 1 to slide along the guide groove 10 when encountering external forces, and use the stored potential energy to restore the base 1 to its original state after the external force disappears. The characteristics of the damper further enhance the shock absorption and rebound capabilities of the base 1, thereby improving the protective performance of the terminal block 2.
[0041] During the entire working process, the temperature sensor always automatically samples and monitors the ambient temperature of the terminal block 2 in real time; when the ambient temperature changes, the resistance of the thermistor will change accordingly, thereby changing the signal voltage transmitted by the sensor to the controller; the controller outputs a corresponding control signal to the manipulator after comparison and calculation based on the change in this signal voltage; the manipulator then controls the heater to achieve the purpose of automatic temperature control; in this way, the terminal block 2 not only realizes the power switching and power supply functions, but also ensures stable operation and long service life in high temperature and vibration environments through its sophisticated design and multiple protection mechanisms.
[0042] It should be noted that for the aforementioned embodiments, for simplicity of description, they are all expressed as a series of action combinations. However, those skilled in the art should be aware that the present invention is not limited by the order of the actions described, because according to the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.
[0043] In the several embodiments provided in this application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative, such as the division of the above-mentioned units. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the coupling or communication connection between each other shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.
[0044] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope to be protected by the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making any creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope to be protected by the present invention.
Claims
1. A temperature control device for a ceramic PTC electric heater, characterized in that: include: base; A wiring seat is provided above the base, wherein the upper end surface of the wiring seat is open; A thermal insulation layer provided on the inner surface of the wiring seat; A heat conducting pipe is provided in the middle of the terminal block, wherein the heat conducting pipe is consistent with the length direction of the terminal block; A heat conduction cavity is provided in the heat conduction tube, and a PTC heating core is provided in the heat conduction cavity; Positioning plates provided on both sides of the heat conducting pipe; A heat dissipation component is provided between every two adjacent positioning plates, wherein the heat dissipation component includes a plurality of heat dissipation fins, and a plurality of the heat dissipation fins are corrugated; A group of cooling fans is provided on the inner side of the base opposite to the wiring seat; A heat dissipation fin is provided on the bottom side of the wiring seat.
2. A temperature control device for a ceramic PTC electric heater according to claim 1, characterized in that: A shock-absorbing block is provided at the bottom of the base, and guide grooves are provided on the inner walls on both sides of the shock-absorbing block. A connecting plate is slidably fitted between the two guide grooves, and a plurality of return springs are provided on the side of the connecting plate opposite to the base, and dampers are integrated in the plurality of return springs.
3. A temperature control device for a ceramic PTC electric heater as claimed in claim 2, characterized in that: A safety component is provided on the inner wall of the wiring seat. The installation component includes a thermistor, a temperature sensor and a controller. The controller is electrically connected to the thermistor and the temperature sensor.
4. A temperature control device for a ceramic PTC electric heater as claimed in claim 3, characterized in that: An extraction electrode is provided on the outer end side of the wiring seat, and a power line is electrically connected to the extraction electrode.
5. The temperature control device of a ceramic PTC electric heater according to claim 4, characterized in that: An insulating film is provided on the inner end side of the wiring seat.
6. The temperature control device of a ceramic PTC electric heater according to claim 2, characterized in that: The bottom of the base is arranged on the upper surface of the connecting plate.