A fire stove with automatic temperature regulation

Abstract

The utility model discloses a kind of fire stove of automatically adjusting temperature, it is related to heating equipment technical field.The fire stove includes furnace body and heating element, its improvement is, temperature control system is set by temperature sensor, controller and switch circuit, can be automatically switched on and off heating element power according to the detected ambient temperature, effectively prevent overheating, improve security;Meanwhile, a ceramic heat conduction platform with external thread is additionally arranged on the top of furnace body, and a handle protection cover plate with handle is configured, which can be screwed down or covered.When the cover plate is screwed down, the exposed heat conduction platform can use residual heat to keep warm or heat food, tea and other, realize the multifunctional comprehensive utilization of heat energy.The utility model integrates automatic temperature control safety protection and multifunctional waste heat utilization, solves the problem of large safety hazard and single function of traditional fire stove.

Description

Technical Field

[0001] This utility model relates to the field of heating equipment technology, specifically to a heater that automatically adjusts the temperature. Background Technology

[0002] As a common winter heating device, fireplaces are widely used in homes, offices, and other places. Currently, traditional fireplaces on the market have a relatively simple structure, typically consisting of a furnace body, a heating element housed within the furnace body, and a protective mesh cover on top. Their working principle is to generate heat through the heating element when electricity is applied, using thermal radiation and convection to provide heat to the surrounding environment.

[0003] However, traditional fireplaces have the following obvious drawbacks in practical use: 1. Significant safety hazards exist. Due to the lack of automatic temperature regulation, if the user forgets to turn off the power and leaves the heater unattended for an extended period, or if flammable items such as clothing or blankets are accidentally placed on the protective mesh cover on top of the heater, heat will accumulate rapidly and cannot dissipate, causing the surface temperature of the heater and the surrounding environment to rise continuously. This can easily lead to a fire and pose a serious threat to the life and property safety of the user.

[0004] 2. Limited functionality and low space utilization. Traditional fireplaces only provide heating, and their top space is usually only covered by a protective mesh, leaving a functional gap. In cold winters, users often need to keep food, tea, etc., warm or heat them, but traditional fireplaces cannot utilize the waste heat generated during operation to achieve this additional function, resulting in a waste of thermal energy and a limitation in equipment functionality.

[0005] Therefore, we propose a heating stove with automatic temperature regulation. Utility Model Content

[0006] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides an automatic temperature-regulating stove. By introducing an automatic temperature control system, it achieves automatic power-off in case of overheating, improving safety. At the same time, by utilizing the top-openable heat-conducting platform, it achieves the dual functions of heating and food preservation, enhancing the product's safety and practicality, and effectively solving the problems in the background technology.

[0007] (II) Technical Solution To achieve the above objectives, the technical solution adopted by this utility model is as follows: an automatically temperature-regulating heater, comprising a furnace body and a heating element disposed inside the furnace body, wherein a protective mesh cover is fixedly installed on the upper part of the furnace body, and further comprising: a temperature control system, wherein the temperature control system includes a temperature sensor, a controller, and a switching circuit; the signal output terminal of the temperature sensor is connected to the input terminal of the controller, the output terminal of the controller is connected to the control terminal of the switching circuit, and the switching circuit is connected in series in the power supply circuit of the heating element; a top plate, fixed to the upper outer surface of the protective mesh cover, and the top plate... A heat dissipation hole is provided on the outer periphery of the upper outer surface of the top plate, extending to the lower outer surface of the top plate; a heat-conducting platform is fixedly installed in the middle of the upper outer surface of the top plate, with its lower outer surface extending to the lower outer surface of the top plate, and its upper part protruding to the upper part of the top plate, with an external threaded ring on the outer wall of the protruding part; a protective cover plate has an internal threaded ring on its inner wall that mates with the external threaded ring, and the protective cover plate is threadedly connected to the upper outer wall of the heat-conducting platform through the internal threaded ring.

[0008] Preferably, the temperature sensor is an NTC thermistor, which is installed on the upper outer surface of the top plate, and the lower end of the temperature sensor extends through to the lower part of the top plate to directly sense the ambient temperature of the outer surface of the oven.

[0009] Preferably, the controller is configured to: when the temperature value detected by the temperature sensor reaches or exceeds a first preset threshold, control the switching circuit to disconnect to stop heating; when the temperature value drops to or falls below a second preset threshold, control the switching circuit to close to restart heating; wherein the range of the first preset threshold is 75℃~85℃, and the range of the second preset threshold is 50℃~60℃.

[0010] Preferably, the heat-conducting platform is a circular ceramic heat-conducting plate.

[0011] Preferably, the surface of the ceramic heat-conducting plate is provided with anti-slip protrusions to prevent items from slipping.

[0012] Preferably, a handle is fixedly installed on the middle of the upper outer surface of the protective cover.

[0013] Preferably, the controller is an 8-bit microcontroller.

[0014] (III) Beneficial Effects Compared with the prior art, this utility model provides an automatically temperature-regulating oven, which has the following beneficial effects: 1. This type of automatic temperature-regulating heater, through the setting of a temperature control system composed of a temperature sensor, controller, and switching circuit, realizes intelligent monitoring and automatic adjustment of the heater's working temperature; when clothing covers the heater or equipment malfunctions, causing the temperature to rise to the set first safety threshold (e.g., 75℃~85℃), the system can automatically cut off the power, stop heating, and force cooling; it can only be restarted after the temperature returns to the second safe threshold (e.g., 50℃~60℃); this closed-loop control fundamentally avoids the phenomenon of continuous high temperature caused by heat accumulation, reduces the fire risk in the case of unattended operation or accidental covering, and improves safety.

[0015] 2. This type of automatic temperature-regulating heater has an independent heat-conducting platform (ceramic heat-conducting plate) on the top. Users can use this platform to keep food, tea, etc. warm or heat them at a low temperature while heating, meeting the diverse needs of families in winter. This not only enhances the practicality and convenience of the product, but also achieves efficient and comprehensive utilization of heat energy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an automatic temperature-regulating heating stove according to this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of an automatic temperature-regulating oven after removing the protective cover and handle.

[0018] Figure 3 This is a schematic diagram of the bottom structure of the protective cover plate in an automatically temperature-regulating oven according to the present invention.

[0019] In the diagram: 1. Furnace body; 2. Controller; 3. Heating element; 4. Protective mesh cover; 5. Top plate; 6. Heat dissipation holes; 7. Protective cover plate; 8. Handle; 9. Temperature sensor; 10. Heat conduction platform; 11. Anti-slip protrusion; 12. External threaded ring; 13. Internal threaded ring. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] This embodiment is a heater with automatic temperature control.

[0022] like Figure 1-3 As shown, the present invention provides an automatic temperature-regulating oven, which mainly includes an oven body 1, a controller 2, a heating element 3, a protective mesh cover 4, a top plate 5, a protective cover 7, a temperature control system, and a heat conduction platform 10.

[0023] Furnace body 1, controller 2, heating element 3, and protective mesh cover 4 are all existing technologies and can be readily understood by those skilled in the art; therefore, they will not be described in detail here.

[0024] The top plate 5 is fixedly installed on the upper outer surface of the protective mesh cover 4, and part of its structure extends downwards, penetrating to the top of the inner cavity of the protective mesh cover 4. Multiple heat dissipation holes 6 are provided on the outer periphery of the upper outer surface of the top plate 5. These heat dissipation holes 6 penetrate the upper and lower surfaces of the top plate 5, forming a channel for hot air to flow out, which helps to dissipate heat when the stove is working.

[0025] One of the key improvements in this embodiment is the integration of a temperature control system. This system includes a temperature sensor 9, a controller 2, and a switching circuit (not shown separately in the figure). The temperature sensor 9 is preferably an NTC thermistor, mounted on the upper outer surface of the top plate 5, with its sensing portion extending downwards and penetrating the top plate 5, allowing it to more directly sense the ambient temperature of the outer surface of the top of the heater. The signal output terminal of the temperature sensor 9 is connected to the input terminal of the controller 2 via a wire. The controller 2 serves as the control core; in this embodiment, a low-cost, low-power 8-bit microcontroller is preferably used. The output terminal of the controller 2 is connected to the control terminal of the switching circuit, which (such as a relay or a thyristor circuit) is connected in series in the power supply circuit of the heating element 3 to switch the power supply to the heating element 3 on and off.

[0026] The controller 2 is pre-programmed to achieve automatic temperature regulation. Specifically, when the temperature value detected by the temperature sensor 9 reaches or exceeds a first preset threshold (preferably 75℃~85℃ in this embodiment), the controller 2 determines that it is in an overheated state (e.g., covered by clothing), and immediately controls the switching circuit to open, cutting off the power supply to the heating element 3 and stopping heating to force cooling. When the temperature value drops to or below a second preset threshold (preferably 50℃~60℃ in this embodiment), the controller 2 controls the switching circuit to close again, resuming heating. Through this closed-loop control, the risk of fire caused by heat accumulation is effectively prevented, improving product safety.

[0027] Another key improvement in this embodiment is the inclusion of a multifunctional heat-conducting platform 10. This platform 10 is fixedly installed in the middle of the upper outer surface of the top plate 5, with its lower end also penetrating the top plate 5 to more effectively receive heat from inside the furnace. The upper part of the heat-conducting platform 10 protrudes above the top plate 5, forming a platform for placing items. Preferably, the heat-conducting platform 10 is a circular ceramic heat-conducting plate; the ceramic material possesses characteristics of high temperature resistance, good thermal conductivity, and electrical insulation safety. To enhance stability when placing items and prevent slippage, several anti-slip protrusions 11 can be provided on the surface of the ceramic heat-conducting plate.

[0028] An external threaded ring 12 is machined on the outer wall of the protruding portion at the top of the heat-conducting platform 10. Correspondingly, a protective cover plate 7 is provided, the inner wall of which is machined with an internal threaded ring 13 that mates with the external threaded ring 12. The protective cover plate 7 is screwed onto the heat-conducting platform 10 by a threaded connection. To facilitate screwing, a handle 8 is fixedly installed in the middle of the upper outer surface of the protective cover plate 7.

[0029] Working Principle: After the user connects the power supply, the controller 2 is powered on and initialized. Under normal circumstances, the controller 2 controls the heating element 3 to work intermittently based on the temperature feedback from the temperature sensor 9, maintaining a comfortable heating temperature. When the user needs to heat food or keep tea warm, the protective cover 7 can be unscrewed, and the container can be placed on the heat-conducting platform 10. The residual heat from the heater can then be used for heat preservation or low-temperature heating, achieving multi-functional utilization of heat energy. In case of an abnormality, such as clothing covering the top plate 5 causing poor heat dissipation, the temperature sensor 9 will quickly detect a sharp rise in temperature. Once the temperature exceeds the first preset safety threshold (e.g., 80℃), the controller 2 will immediately cut off the power to the heating element 3 until the temperature drops to a safe range (e.g., 55℃) before resuming power, thus improving safety performance.

[0030] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A temperature-regulating heater, comprising a furnace body (1) and a heating element (3) disposed inside the furnace body (1), wherein a protective mesh cover (4) is fixedly installed on the upper part of the furnace body (1), characterized in that, Also includes: A temperature control system is provided, comprising a temperature sensor (9), a controller (2), and a switching circuit. The signal output terminal of the temperature sensor (9) is connected to the input terminal of the controller (2), and the output terminal of the controller (2) is connected to the control terminal of the switching circuit. The switching circuit is connected in series in the power supply circuit of the heating element (3). The top plate (5) is fixed to the upper outer surface of the protective net cover (4), and the top plate (5) extends through to the top of the inner cavity of the protective net cover (4). Heat dissipation holes (6) are provided on the outer periphery of the upper outer surface of the top plate (5), and the heat dissipation holes (6) extend through to the lower outer surface of the top plate (5). A heat-conducting platform (10) is fixedly installed in the middle of the upper outer surface of the top plate (5). The lower outer surface of the heat-conducting platform (10) extends through to the lower outer surface of the top plate (5). The upper part of the heat-conducting platform (10) protrudes to the upper part of the top plate (5), and an external thread ring (12) is provided on the outer wall of the protruding part of the upper part of the heat-conducting platform (10). The protective cover (7) has an inner thread ring (13) that mates with the outer thread ring (12) on its inner wall. The protective cover (7) is threaded to the outer wall of the upper part of the heat-conducting platform (10) through the inner thread ring (13).

2. The automatic temperature-regulating heater according to claim 1, characterized in that, The temperature sensor (9) is an NTC thermistor, which is installed on the upper outer surface of the top plate (5), and the lower end of the temperature sensor (9) extends through to the lower part of the top plate (5) to directly sense the ambient temperature of the outer surface of the stove.

3. The automatic temperature-regulating heater according to claim 2, characterized in that, The controller (2) is configured to: when the temperature value detected by the temperature sensor (9) reaches or exceeds a first preset threshold, control the switch circuit to disconnect to stop heating; when the temperature value drops to or below a second preset threshold, control the switch circuit to close to restart heating; wherein the range of the first preset threshold is 75℃~85℃, and the range of the second preset threshold is 50℃~60℃.

4. The automatic temperature-regulating heater according to claim 1, characterized in that, The heat-conducting platform (10) is a circular ceramic heat-conducting plate.

5. A heating stove with automatic temperature regulation according to claim 4, characterized in that, The surface of the ceramic heat-conducting plate is provided with anti-slip protrusions (11) to prevent items from slipping.

6. A heating stove with automatic temperature regulation according to claim 1, characterized in that, A handle (8) is fixedly installed on the middle of the upper outer surface of the protective cover (7).

7. A heating stove with automatic temperature regulation according to claim 1, characterized in that, The controller (2) is an 8-bit microcontroller.

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