Simulation fireplace

Abstract

The utility model discloses a simulation fireplace which comprises a fireplace body, a flame effect device, a heating element and a control system, a hollow combustion chamber is formed in the fireplace body, and an observation window and an air outlet are formed in the front side of the combustion chamber. The flame effect device comprises an LED lamp set arranged behind the combustion chamber, a light guide plate located in front of the LED lamp set and a diffusion layer covering the surface of the light guide plate. The light guide plate is provided with a plurality of flame light-transmitting areas in different shapes. In the aspect of flame simulation, through the design of the wave-shaped light guide plate and the gradually-changed interval flame light-transmitting area and the combination of the nanoscale titanium dioxide diffusion layer, light refraction and scattering are more natural, the dynamic flame fidelity is high, the light intensity uniformity is high, the problem of uneven light spots is effectively solved, and the flame simulation effect is improved. And the simulation effect, the heating efficiency, the intelligent control and the safety are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of fireplace technology, specifically to a simulated fireplace. Background Technology

[0002] In modern home decoration, simulated fireplaces are widely used due to their combination of decorative and heating functions. Existing simulated fireplaces mostly use LED projection, atomizing devices, or mechanical oscillating structures to simulate flame effects, but these suffer from problems such as insufficient realism in flame dynamics and poor optical uniformity. For example, traditional flat light guide plates easily lead to uneven light spot distribution, making it difficult to reproduce a naturally flickering flame shape. Heating systems generally use resistance wires or infrared heating elements, which suffer from low thermal efficiency, slow heating speed, and insufficient temperature control precision, while also lacking environmental adaptive adjustment functions. In terms of safety, most products do not integrate tilt detection or harmful gas monitoring devices, posing safety hazards such as tipping over, short circuits, and carbon monoxide leaks. Utility Model Content

[0003] In order to overcome the shortcomings of existing technical solutions, this utility model provides a simulated fireplace, which can effectively solve the problems raised in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A simulated fireplace includes a fireplace body, a flame effect device, a heating element, and a control system. The fireplace body has a hollow combustion chamber inside, with an observation window and an air vent on the front side. The flame effect device includes an LED light group located behind the combustion chamber, a light guide plate located in front of the LED light group, and a diffusion layer covering the surface of the light guide plate. The light guide plate has multiple flame light-transmitting areas of different shapes. The heating element includes a graphene heating film attached to the bottom of the combustion chamber. The control system integrates a temperature sensor and a wireless communication module. The temperature sensor is electrically connected to the graphene heating film, and the wireless communication module is communicatively connected to an external smart terminal.

[0006] As a further description of the above technical solution, the light guide plate has a wavy, bent structure, and the distance between adjacent flame light-transmitting areas gradually increases along the height direction of the light guide plate.

[0007] As a further description of the above technical solution, the diffusion layer is a nano-scale titanium dioxide coating with a thickness of 0.1mm-0.3mm.

[0008] As a further description of the above technical solution, the graphene heating film is fixedly connected to the bottom of the combustion chamber via thermally conductive silicone.

[0009] As a further description of the above technical solution, the control system also includes an ambient light sensor, a tilt sensor, and a carbon monoxide sensor. The ambient light sensor is located at the edge of the observation window, and its signal output terminal is electrically connected to the LED light group. The tilt sensor is located at the bottom of the fireplace body, and the carbon monoxide sensor is located at the air outlet. Both are electrically connected to the graphene heating film.

[0010] As a further description of the above technical solution, airflow channels are symmetrically arranged on both sides of the interior of the combustion chamber. The inlet of the airflow channel is located at the bottom of the combustion chamber, and the outlet is located above the observation window. The inner wall of the airflow channel is provided with spiral guide vanes, and the cross-section of the airflow channel is tapered.

[0011] As a further description of the above technical solution, the top of the fireplace body is provided with a detachable decorative panel, the bottom surface of the decorative panel is provided with a magnetic connection part, and the top of the fireplace body is correspondingly provided with a metal adsorption layer.

[0012] As a further description of the above technical solution, the LED light group includes at least three groups of LED beads with different color temperatures. The LED beads are arranged in a stepped manner along the height direction of the light guide plate, and the spacing between adjacent groups of LED beads is 20-30mm.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The simulated fireplace of this utility model has at least one of the following beneficial effects during use:

[0015] In terms of flame simulation, the design utilizes a wave-shaped light guide plate and a gradually spaced flame light-transmitting area, combined with a nano-level titanium dioxide diffusion layer, to achieve more natural light refraction and scattering, resulting in highly realistic dynamic flames and uniform light intensity, effectively eliminating uneven light spots. The heating system employs a graphene heating film combined with high thermal conductivity silicone, achieving high heat conversion efficiency, high temperature control precision, and energy-saving and environmentally friendly functions. The control system integrates multiple sensors to achieve adaptive adjustment of ambient light, tilt-based power-off, and carbon monoxide over-limit protection, with a response speed of ≤0.3 seconds, and safety performance meets international standards. Furthermore, the magnetically detachable decorative panel allows for quick replacement to meet personalized decoration needs; the multi-color temperature stepped LED light group creates a three-dimensional flame layering effect, significantly enhancing functionality compared to existing solutions. Overall, it offers substantial improvements in simulation effect, heating efficiency, intelligent control, and safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a simulated fireplace according to the present invention;

[0017] Figure 2This is a perspective structural diagram of a simulated fireplace according to the present invention;

[0018] Figure 3 This is a front structural diagram of a simulated fireplace according to the present invention.

[0019] Numbering on the map:

[0020] 1. Fireplace body; 101. Decorative panel; 102. Observation window; 103. Air outlet; 104. Combustion chamber; 105. Airflow channel; 2. Flame effect device; 201. LED light group; 202. Graphene heating film; 203. Light guide plate; 3. Control system. Detailed Implementation

[0021] 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 protection scope of the present utility model.

[0022] like Figure 1-3 As shown, this utility model provides a simulated fireplace, including a fireplace body 1, a flame effect device 2, a heating element, and a control system 3. The fireplace body 1 has a hollow combustion chamber 104 inside. An observation window 102 and an air outlet 103 are provided on the front side of the combustion chamber 104. The flame effect device 2 includes an LED light group 201 located behind the combustion chamber 104, a light guide plate 203 located in front of the LED light group 201, and a diffusion layer covering the surface of the light guide plate 203. The light guide plate 203 has multiple flame light-transmitting areas of different shapes. The heating element includes a graphene heating film 202 attached to the bottom of the combustion chamber 104. The control system 3 integrates a temperature sensor and a wireless communication module. The temperature sensor is electrically connected to the graphene heating film 202, and the wireless communication module is communicatively connected to an external smart terminal.

[0023] In this embodiment, the light emitted by the LED light group 201 passes through the flame light-transmitting area on the light guide plate 203, and after being scattered by the diffusion layer, forms a dynamic flame light and shadow in the observation window 102. The light guide plate 203 is located behind the combustion chamber 104. The light is refracted differently through the light-transmitting area (with different shapes), and the diffusion layer homogenizes the light intensity distribution, simulating the brightness changes of a real flame.

[0024] The graphene heating film 202 is attached to the bottom of the combustion chamber 104. After being powered on, it heats up rapidly through the Joule effect. The heat is transferred to the surrounding air through the combustion chamber 104 and forms a hot airflow circulation through the air outlet 103. The temperature sensor monitors the temperature of the heating film in real time and feeds it back to the control system 3 to adjust the power and achieve constant temperature control. The wireless communication module supports remote temperature setting and equipment switching via external smart terminals (such as mobile APP).

[0025] Combining optical design with heating functionality, this fireplace simulation satisfies both visual (flame effect) and tactile (temperature adjustment) needs, distinguishing it from single-heating or projection-based simulated fireplaces. The graphene heating film 202 boasts a heat conversion efficiency of ≥95%, achieving precise temperature control within ±1℃ with a temperature sensor, resulting in over 30% energy savings compared to traditional electric heating wires. A wireless communication module supports remote control, enhancing user convenience.

[0026] Furthermore, the light guide plate 203 has a wavy, bent structure, and the distance between adjacent flame light-transmitting areas gradually increases along the height direction of the light guide plate 203.

[0027] The light guide plate 203 employs a wave-shaped bending structure, causing multiple refractions of light during propagation to simulate the dynamic trajectory of a flame swaying in the wind. The spacing between adjacent flame light-transmitting areas gradually increases along the height direction, with a larger spacing in the upper layer resulting in a wider light scattering range and creating a visual effect of "flame top diffusion," while the smaller spacing in the lower layer preserves the concentrated shape of the flame root. Through this optical structure design, the natural swaying effect of the flame can be achieved without relying on mechanical movement or atomizing devices, resulting in high fidelity in flame dynamics. The purely optical structure has no moving parts, reducing the probability of failure.

[0028] Furthermore, the diffusion layer is a nano-scale titanium dioxide coating with a thickness of 0.1mm-0.3mm. This 0.1-0.3mm thick nano-scale titanium dioxide coating (surface roughness Ra 0.2-0.5μm) diffuses the LED light. The uniform distribution of nano-particles causes light to scatter rather than specularly reflect on the coating surface, eliminating the dotted light spots of the LED beads and forming a soft, continuous flame band. High light intensity uniformity avoids artifacts of uneven brightness, resulting in a natural transition at the flame edge, closely resembling a realistic combustion effect. Simultaneously, the titanium dioxide coating possesses anti-UV aging properties.

[0029] Furthermore, the graphene heating film 202 is fixedly connected to the bottom of the combustion chamber 104 via thermally conductive silicone. The graphene heating film 202 is bonded to the bottom of the combustion chamber 104 via silicone with a thermal conductivity ≥5 W / (m·K). The silicone fills the micro-gaps between the film and the substrate, forming a highly efficient heat conduction path. The heat generated by the heating film is rapidly transferred to the metal substrate of the combustion chamber 104 via the silicone, and then the ambient air is heated through thermal radiation and convection.

[0030] Furthermore, the control system 3 also includes an ambient light sensor, a tilt sensor, and a carbon monoxide sensor. The ambient light sensor is located at the edge of the observation window 102, and its signal output terminal is electrically connected to the LED light group 201. The tilt sensor is located at the bottom of the fireplace body 1, and the carbon monoxide sensor is located at the air outlet 103. Both are electrically connected to the graphene heating film 202.

[0031] An ambient light sensor at the edge of observation window 102 detects ambient brightness in real time and adjusts the brightness of LED light group 201 via signal output (e.g., automatically reducing brightness by 50% at night) to avoid glare from strong light or invisibility from weak light. A bottom tilt sensor triggers power-off protection when the device tilts at an angle ≥15°; a carbon monoxide sensor at air outlet 103 immediately cuts off the heating film power and activates an alarm when it detects a CO concentration ≥50ppm.

[0032] Furthermore, airflow channels 105 are symmetrically arranged on both sides of the interior of the combustion chamber 104. The inlet of the airflow channel 105 is located at the bottom of the combustion chamber 104, and the outlet is located above the observation window 102. The inner wall of the airflow channel 105 is provided with spiral guide vanes, and the cross-section of the airflow channel 105 is tapered.

[0033] The inlet (bottom) width of the airflow channels 105 on both sides of the combustion chamber 104 is 2-3 times that of the outlet (above the observation window 102). Spiral guide vanes on the inner wall guide the air to form clockwise / counterclockwise vortices. Hot air generated by the heating element enters the channel from the inlet, accelerates through the tapered cross-section, and exits from the outlet, driving airflow at the observation window 102 and creating a visually aiding effect of "hot air rising." The disassembled panel allows direct access to the interior of the combustion chamber 104, facilitating cleaning of the light guide plate 203 and replacement of the LED light assembly 201.

[0034] The airflow speed accelerates from 0.5m / s at the inlet to 1.5m / s at the outlet. Combined with the turbulence generated by the spiral guide vanes, the flame light and shadow present a dynamic blurring effect of "swaying with the wind," improving the realism by 30%. The airflow channel 105 increases the contact area between hot air and the combustion chamber 104, improving the heat exchange efficiency by 20% and increasing the outlet air temperature by 5-8℃ under the same power.

[0035] Furthermore, the fireplace body 1 has a detachable decorative panel 101 on its top. The bottom surface of the decorative panel 101 has a magnetic connection part, and the top of the fireplace body 1 has a corresponding metal adsorption layer. The magnetic connection part (such as a neodymium iron boron magnet array) on the bottom surface of the decorative panel 101 is magnetically fixed to the metal adsorption layer (such as a stainless steel plate) on the top of the fireplace body 1, allowing for panel removal and installation without tools. This supports quick replacement of decorative panels 101 made of different materials (wood / stone / metal) or in different styles.

[0036] Furthermore, the LED light group 201 includes at least three groups of LED beads with different color temperatures. The LED beads are arranged in a stepped manner along the height direction of the light guide plate 203, and the spacing between adjacent groups of LED beads is 20-30mm.

[0037] At least three sets of LED beads with different color temperatures (such as 3000K warm yellow, 4000K neutral white, and 5000K cool white) are arranged in a stepped pattern along the height of the light guide plate 203, with a spacing of 20mm between the lower layer beads and 30mm between the upper layer beads. The control system 3 alternately illuminates the LED beads of different color temperatures according to a preset program, simulating the color temperature gradient from the bottom (warm yellow) to the top (cool white) of the flame, with the stepped spacing forming a vertical light intensity gradient. Through the combined design of color temperature and spacing, the visual layering of the flame is achieved, with a "warm base, bright middle, and light top," supporting multiple scene switching such as "campfire mode," "fireplace mode," and "energy-saving mode," and creating diverse flame effects through different combinations of LED beads.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A simulated fireplace, comprising a fireplace body, a flame effect device, a heating element, and a control system, characterized in that: The fireplace body has a hollow combustion chamber inside. An observation window and an air vent are provided on the front side of the combustion chamber. The flame effect device includes an LED light group located behind the combustion chamber, a light guide plate located in front of the LED light group, and a diffusion layer covering the surface of the light guide plate. The light guide plate has multiple flame light-transmitting areas of different shapes. The heating element includes a graphene heating film attached to the bottom of the combustion chamber. The control system integrates a temperature sensor and a wireless communication module. The temperature sensor is electrically connected to the graphene heating film, and the wireless communication module is connected to an external smart terminal.

2. The simulated fireplace according to claim 1, characterized in that: The light guide plate has a wavy, bent structure, and the distance between adjacent flame light-transmitting areas gradually increases along the height direction of the light guide plate.

3. A simulated fireplace according to claim 1, characterized in that: The diffusion layer is a nanoscale titanium dioxide coating with a thickness of 0.1 mm to 0.3 mm.

4. A simulated fireplace according to claim 1, characterized in that: The graphene heating film is fixedly connected to the bottom of the combustion chamber via thermally conductive silicone.

5. A simulated fireplace according to claim 1, characterized in that: The control system also includes an ambient light sensor, a tilt sensor, and a carbon monoxide sensor. The ambient light sensor is located at the edge of the observation window and its signal output terminal is electrically connected to the LED light group. The tilt sensor is located at the bottom of the fireplace body, and the carbon monoxide sensor is located at the air outlet. Both are electrically connected to the graphene heating film.

6. A simulated fireplace according to claim 1, characterized in that: The combustion chamber has airflow channels symmetrically arranged on both sides inside. The inlet of the airflow channel is located at the bottom of the combustion chamber, and the outlet is located above the observation window. The inner wall of the airflow channel is provided with spiral guide vanes, and the cross-section of the airflow channel is tapered.

7. A simulated fireplace according to claim 1, characterized in that: The fireplace body has a detachable decorative panel on top, the bottom of which has a magnetic connection part, and a corresponding metal adsorption layer on top of the fireplace body.

8. A simulated fireplace according to claim 1, characterized in that: The LED light group includes at least three groups of LED beads with different color temperatures. The LED beads are arranged in a stepped manner along the height direction of the light guide plate, and the spacing between adjacent groups of LED beads is 20-30mm.

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