Electric fireplace with safety detection function

Abstract

The utility model discloses an electric fireplace with a safety detection function. The electric fireplace comprises a power supply module, a main control module, an electric heating module, a motor driving module, an LED backlight module and a detection module, the electric heating module is respectively connected with the power supply module and the main control module; the motor driving module is respectively connected with the power supply module and the main control module and is used for driving the reflective component to circularly move; the LED backlight module is respectively connected with the power supply module and the main control module and is used for providing a reflective light source; the detection module is connected with the power module and the main control module and used for detecting the opening and closing state of the furnace door; the main control module can cut off the electric heating module when receiving the furnace door opening signal and not receiving the furnace door closing signal within a preset waiting time so as to stop generating heat; by detecting the opening and closing state of the furnace door and closing the electric heating module after detecting that the opening time of the furnace door exceeds the preset time, potential risks caused by long-time opening of the furnace door are avoided, and the use requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of electric fireplaces, and in particular to an electric fireplace with a safety detection function. Background Technology

[0002] Electric fireplaces, as a type of household electric heating appliance, are characterized by cleanliness, safety, reliability, ease of installation and removal, and high combustion efficiency. Compared with wood-burning and gas-fired fireplaces, electric fireplaces do not produce unavoidable soot, strange odors, or noise from burning flames. Furthermore, electric fireplaces not only save on heating costs but also offer an elegant aesthetic, allowing users to safely and conveniently enjoy the warmth and comfort they provide. However, existing electric fireplaces lack safety detection functions. If the fireplace door is left open without being closed promptly, a large amount of heat generated during operation will escape, posing a danger. Therefore, there is an urgent need for an electric fireplace with a safety detection function to solve this problem. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an electric fireplace with a safety detection function.

[0004] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: an electric fireplace with safety detection function, including a power supply module, a main control module, an electric heating module, a motor drive module, an LED backlight module, and a detection module;

[0005] The power module is connected to an external power source;

[0006] The main control module is connected to the power supply module;

[0007] The electric heating module is connected to both the power supply module and the main control module to generate heat.

[0008] The motor drive module is connected to the power module and the main control module respectively, and is used to drive the reflective components to move in a cycle.

[0009] The LED backlight module is connected to the power module and the main control module respectively, and is used to provide a reflective light source;

[0010] The detection module is connected to the power module and the main control module respectively, and is used to detect the opening and closing status of the furnace door;

[0011] The main control module can cut off the electric heating module to stop generating heat when it receives a furnace door opening signal and does not receive a furnace door closing signal within a preset waiting time.

[0012] As a preferred embodiment of the present invention, the detection module includes a first detection circuit and a second detection circuit. The first detection circuit is installed between the furnace body and the left door to detect the opening and closing status of the left door; the second detection circuit is installed between the furnace body and the right door to detect the opening and closing status of the right door.

[0013] In one preferred embodiment of this utility model, the first detection circuit includes resistors R6, R10, and R92, capacitors C4 and C8, resistors R58-R60, transistor Q6, a first infrared transmitter, and a first infrared receiver. One end of resistor R6 is connected to the main control module and one end of capacitor C4, respectively. The other end of resistor R6 is connected to one end of resistor R92 and the third end of the first infrared receiver, respectively. The other end of resistor R92 is connected to the power supply module and one end of resistor R10, respectively. The other end of resistor R10... One end of capacitor C8 and the first end of the first infrared receiver are connected respectively. The other end of capacitor C4, the other end of capacitor C8 and the second end of the first infrared receiver are connected to the GND terminal. One end of resistor R59 is connected to the main control module. The other end of resistor R59 is connected to one end of resistor R60 and the base of transistor Q6. The collector of transistor Q6 is connected to the second end of the first infrared emitter. The first end of the first infrared emitter is connected to the power supply module. The emitter of transistor Q6 and the other end of resistor R60 are connected to the GND terminal.

[0014] In one preferred embodiment of this utility model, the second detection circuit includes resistors R66-R67, resistor R69, capacitors C9 and C10, resistor R49, resistors R61-R64, transistor Q7, capacitors C27-C28, a second infrared transmitter, and a second infrared receiver. One end of resistor R69 is connected to the main control module and one end of capacitor C9. The other end of resistor R69 is connected to one end of resistor R67 and the third end of the second infrared receiver. The other end of resistor R67 is connected to the power module and one end of resistor R66. The other end of resistor R66 is connected to one end of capacitor C10 and the first end of the second infrared receiver. The other end of capacitor C9, the other end of capacitor C10, and the second infrared receiver are connected to the main control module and one end of capacitor R66. The second terminal of the external receiver is connected to the GND terminal; one end of resistor R49, one end of resistor R63, and one end of capacitor C27 are connected to the main control module; the other end of resistor R49 is connected to one end of resistor R62 and the base of transistor Q7; the collector of transistor Q7 is connected to the first terminal of the second infrared emitter via resistor R61; the other end of resistor R63 is connected to one end of resistor R64 and the second terminal of the second infrared emitter; the other end of resistor R64 is connected to the power module, one end of capacitor C28, and the third terminal of the second infrared emitter; the other ends of capacitor C27, capacitor C28, resistor R62, the emitter of transistor Q7, and the fourth terminal of the second infrared emitter are connected to the GND terminal.

[0015] As one of the preferred embodiments of this utility model, an electric fireplace with a safety detection function further includes a first temperature detection module connected to the power supply module and the main control module respectively, for detecting the temperature inside the fireplace.

[0016] As one of the preferred embodiments of this utility model, the first temperature detection module includes resistors R1-R2, capacitor C14 and a first temperature sensor. One end of resistor R1 is connected to the power supply module, and the other end of resistor R1 is connected to one end of resistor R2, one end of capacitor C14 and the second end of the first temperature sensor. The other end of resistor R2 is connected to the main control module, and the other end of capacitor C14 and the first end of the first temperature sensor are connected to the GND terminal.

[0017] As one of the preferred embodiments of this utility model, an electric fireplace with a safety detection function further includes a second temperature detection module connected to the power supply module and the main control module respectively, for detecting the temperature outside the fireplace body.

[0018] In one preferred embodiment of this utility model, the second temperature detection module includes an operational amplifier U11, resistors R74, R77, R81-R82, R84, R87, R89, R91, capacitors C12-C13, capacitor C40, and a second temperature sensor. One end of resistor R77 is connected to the main control module and the OUTA pin of operational amplifier U11, and the other end of resistor R77 is connected to the IN1- pin of operational amplifier U11. One end of resistor R84 is connected to the IN1+ pin of operational amplifier U11 and one end of capacitor C40, and the other end of resistor R84 is connected to the OUT2 pin of operational amplifier U11 and one end of resistor R74. The other end of resistor R74 is connected to one end of resistor R87 and the I1+ pin of operational amplifier U11. N2- is connected, the other end of resistor R87 is connected to one end of capacitor C13, one end of resistor R81, and the second end of the second temperature sensor, the other end of resistor R81 is connected to the power module, one end of capacitor C12 is connected to the power module and the VDD pin of operational amplifier U11, the I N2+ pin of operational amplifier U11 is connected to one end of resistor R89 ​​and one end of resistor R82, the other end of resistor R82 is connected to one end of resistor R91 and the first end of the second temperature sensor, the other ends of capacitor C40, capacitor C12, operational amplifier U11, resistor R89, capacitor C13, and resistor R91 are connected to the GND terminal.

[0019] As one of the preferred embodiments of this utility model, an electric fireplace with a safety detection function also includes a button module connected to the power supply module and the main control module respectively.

[0020] As one of the preferred embodiments of this utility model, an electric fireplace with safety detection function also includes a display module connected to the power supply module and the main control module respectively.

[0021] The beneficial effects of this utility model are as follows: An electric fireplace with safety detection function includes a power supply module, a main control module, an electric heating module, a motor drive module, an LED backlight module, and a detection module; the power supply module is connected to an external power source; the main control module is connected to the power supply module; the electric heating module is connected to both the power supply module and the main control module to generate heat; the motor drive module is connected to both the power supply module and the main control module to drive the reflective components in a cyclical motion; the LED backlight module is connected to both the power supply module and the main control module to provide a reflective light source; the detection module is connected to both the power supply module and the main control module to detect the opening and closing status of the fireplace door; the main control module can cut off the electric heating module to stop generating heat when it receives a fireplace door opening signal and does not receive a fireplace door closing signal within a preset waiting time; by detecting the opening and closing status of the fireplace door and turning off the electric heating module after detecting that the fireplace door has been open for more than a preset time, the potential danger caused by the fireplace door being open for a long time is avoided, thus meeting the usage requirements. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of an electric fireplace with safety detection function.

[0024] Figure 2 This is the circuit schematic of the power module;

[0025] Figure 3 The circuit schematic of the main control module;

[0026] Figure 4 This is the circuit diagram of the electric heating module;

[0027] Figure 5 This is the circuit schematic of the motor drive module;

[0028] Figure 6 This is the circuit schematic of the LED backlight module;

[0029] Figure 7 The circuit schematic of the detection module;

[0030] Figure 8 This is the circuit schematic of the first temperature detection module;

[0031] Figure 9 This is the circuit schematic of the second temperature detection module;

[0032] Figure 10 This is the circuit schematic of the display module;

[0033] Figure 11 This is the circuit schematic of the button module. Detailed Implementation

[0034] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0035] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0036] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0038] Reference Figures 1 to 11 An electric fireplace with safety detection function includes a power module 10, a main control module 20, an electric heating module 30, a motor drive module 40, an LED backlight module 50, and a detection module 60.

[0039] Power module 10 is connected to an external power source;

[0040] The main control module 20 is connected to the power supply module 10;

[0041] The electric heating module 30 is connected to the power supply module 10 and the main control module 20 respectively, and is used to generate heat;

[0042] The motor drive module 40 is connected to the power supply module 10 and the main control module 20 respectively, and is used to drive the reflective components to move in a cycle.

[0043] LED backlight module 50 is connected to power module 10 and main control module 20 respectively, and is used to provide a reflective light source;

[0044] The detection module 60 is connected to the power module 10 and the main control module 20 respectively, and is used to detect the opening and closing status of the furnace door;

[0045] The main control module 20 can cut off the electric heating module 30 to stop generating heat when it receives a furnace door opening signal and does not receive a furnace door closing signal within a preset waiting time.

[0046] In this utility model, as an embodiment of an electric fireplace, it includes a housing, within which an electric heating structure (electric heating module 30) is installed. Simulated charcoal is positioned at the front end of the housing, and a flame imaging screen is positioned behind the simulated charcoal. A reflective light source is positioned below the simulated charcoal. A light-transmitting plate is also installed inside the housing below the flame imaging screen, with light-transmitting holes on the plate. The reflective light source is located in front of the light-transmitting plate, and a reciprocating reflective strip (reflective component) is positioned behind the light-transmitting plate. The reflective strip (reflective component) has flame-shaped reflective sheets, and is connected to a motor via a transmission mechanism. The motor drives the reflective strip (reflective component) to direct the light emitted by the reflective light source through the light-transmitting plate onto the fireplace. On the flame imaging screen, a realistic flame combustion effect is created, while the electric heating structure (electric heating module 30) provides heat for the user to warm up. Furthermore, a hinged furnace door is provided at the front end of the housing, which can rotate to open or close relative to the housing. A detection module 60 is set between the furnace door and the housing to detect the opening and closing status of the furnace door. The main control module 20 can cut off the electric heating module 30 to stop generating heat when it receives a furnace door opening signal and does not receive a furnace door closing signal within a preset waiting time. The advantage of this utility model is that by detecting the opening and closing status of the furnace door and shutting off the electric heating module after detecting that the furnace door has been open for more than a preset time, the potential danger caused by the furnace door being open for a long time is avoided, thus meeting the usage requirements.

[0047] Reference Figure 7 In some embodiments, the detection module 60 includes a first detection circuit and a second detection circuit. The first detection circuit is installed between the furnace body and the left door to detect the opening and closing status of the left door. The second detection circuit is installed between the furnace body and the right door to detect the opening and closing status of the right door. The furnace door is a double-door structure, i.e., a left door and a right door. The first detection circuit and the second detection circuit detect the opening and closing of the left door and the right door respectively and feed back to the main control module 20.

[0048] Reference Figure 7 In some embodiments, the first detection circuit includes resistors R6, R10, and R92, capacitors C4 and C8, resistors R58-R60, transistor Q6, a first infrared transmitter, and a first infrared receiver. One end of resistor R6 is connected to the main control module 20 and one end of capacitor C4. The other end of resistor R6 is connected to one end of resistor R92 and the third end of the first infrared receiver. The other end of resistor R92 is connected to the power supply module 10 and one end of resistor R10. The other end of resistor R10 is connected to one end of capacitor C8 and the first end of the first infrared receiver. The other ends of capacitors C4, C8, and the second end of the first infrared receiver are connected to the GND terminal. One end of resistor R59 is connected to the main control module 20. The other end of resistor R59 is connected to one end of resistor R60 and the base of transistor Q6. The collector of transistor Q6 is connected to the second end of the first infrared transmitter. The first end of the first infrared transmitter is connected to the power module 10. The emitter of transistor Q6 and the other end of resistor R60 are connected to the GND terminal. Specifically, the first infrared transmitter is installed on the left door, and the first infrared receiver is installed on the housing. When the signal emitted by the first infrared transmitter can be received by the first infrared receiver, the main control module 20 determines that the left door is closed. When the left door is open, the first infrared receiver cannot receive the signal emitted by the first infrared transmitter, and thus determines that the left door is open. The main control module 20 controls the working state of the first infrared transmitter by controlling the on and off of transistor Q6 through high and low levels.

[0049] Reference Figure 7In some embodiments, the second detection circuit includes resistors R66-R67, resistor R69, capacitors C9 and C10, resistor R49, resistors R61-R64, transistor Q7, capacitors C27-C28, a second infrared transmitter, and a second infrared receiver. One end of resistor R69 is connected to the main control module 20 and one end of capacitor C9. The other end of resistor R69 is connected to one end of resistor R67 and the third end of the second infrared receiver. The other end of resistor R67 is connected to the power supply module 10 and one end of resistor R66. The other end of resistor R66 is connected to one end of capacitor C10 and the first end of the second infrared receiver. The other ends of capacitors C9, C10, and the second end of the second infrared receiver are connected to the GND terminal. One end of resistor R49, one end of resistor R63, and one end of capacitor C27 are connected to the main control module 20. The other end of resistor R49 is connected to one end of resistor R62 and transistor Q7. The base of transistor Q7 is connected to the base of the receiver. The collector of transistor Q7 is connected to the first terminal of the second infrared transmitter via resistor R61. The other end of resistor R63 is connected to one end of resistor R64 and the second terminal of the second infrared transmitter. The other end of resistor R64 is connected to the power module 10, one end of capacitor C28, and the third terminal of the second infrared transmitter. The other ends of capacitor C27, capacitor C28, resistor R62, the emitter of transistor Q7, and the fourth terminal of the second infrared transmitter are connected to the GND terminal. Specifically, the second infrared transmitter is installed on the right door, and the second infrared receiver is installed on the housing. When the signal emitted by the second infrared transmitter can be received by the second infrared receiver, the main control module 20 determines that the right door is closed. When the right door is open, the second infrared receiver cannot receive the signal emitted by the second infrared transmitter, and thus determines that the right door is open. The main control module 20 controls the working state of the second infrared transmitter by controlling the on / off state of transistor Q6 through high and low levels.

[0050] Reference Figure 8 In some embodiments, an electric fireplace with safety detection function further includes a first temperature detection module 71 connected to the power module 10 and the main control module 20 respectively, for detecting the temperature inside the fireplace; as a preferred embodiment of the first temperature detection module 71, the first temperature detection module 71 includes resistors R1-R2, capacitor C14 and a first temperature sensor, one end of resistor R1 is connected to the power module 10, the other end of resistor R1 is connected to one end of resistor R2, one end of capacitor C14 and the second end of the first temperature sensor respectively, the other end of resistor R2 is connected to the main control module 20, and the other end of capacitor C14 and the first end of the first temperature sensor are connected to the GND terminal.

[0051] Reference Figure 9In some embodiments, an electric fireplace with safety detection function further includes a second temperature detection module 72 connected to the power module 10 and the main control module 20 respectively, for detecting the temperature outside the fireplace body; as a preferred embodiment of the second temperature detection module 72, the second temperature detection module 72 includes an operational amplifier U11, resistors R74, R77, resistors R81-R82, R84, R87, R89, R91, capacitors C12-C13, capacitor C40, and a second temperature sensor. One end of resistor R77 is connected to the main control module 20 and the OUTA pin of operational amplifier U11 respectively, and the other end of resistor R77 is connected to the IN1- pin of operational amplifier U11. One end of resistor R84 is connected to the IN1+ pin of operational amplifier U11 and one end of capacitor C40 respectively, and the other end of resistor R84 is connected to the OUT2 pin of operational amplifier U11 and one end of resistor R74 respectively. The other end of resistor R74 is connected to one end of resistor R87 and the I1+ pin of operational amplifier U11 respectively. N2- is connected, the other end of resistor R87 is connected to one end of capacitor C13, one end of resistor R81, and the second end of the second temperature sensor, the other end of resistor R81 is connected to power module 10, one end of capacitor C12 is connected to power module 10 and the VDD pin of operational amplifier U11, the I N2+ pin of operational amplifier U11 is connected to one end of resistor R89 ​​and one end of resistor R82, the other end of resistor R82 is connected to one end of resistor R91 and the first end of the second temperature sensor, the other ends of capacitor C40, capacitor C12, operational amplifier U11, resistor R89, capacitor C13, and resistor R91 are connected to the GND terminal; the signal detected by the second temperature sensor is amplified by operational amplifier U11 and sent to main control module 20. Main control module 20 combines the furnace body temperature detected by the first temperature sensor and the furnace body temperature detected by the second temperature sensor to automatically adjust the working state of electric heating module 30, so as to achieve constant indoor temperature and avoid excessive temperature inside the furnace.

[0052] Reference Figure 10 In some embodiments, an electric fireplace with safety detection function also includes a button module 80 connected to the power module 10 and the main control module 20 respectively. The button module 80 includes at least a power switch button, a temperature increase button, a temperature decrease button, an automatic button, and a manual button, which can control the working status of the electric fireplace.

[0053] Reference Figure 11In some embodiments, an electric fireplace with a safety detection function further includes a display module 90 connected to the power module 10 and the main control module 20 respectively. The display module 90 is preferably configured as a display screen to display the target temperature, current temperature, time, etc. of the electric fireplace, so that users can view all parameters of the electric fireplace.

[0054] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. An electric fireplace with a safety detection function, characterized in that: The application relates to a multifunctional electric heating furnace, which comprises a power module (10), a main control module (20), an electric heating module (30), a motor driving module (40), an LED backlight module (50) and a detection module (60). The power module (10) is connected with an external power source. The main control module (20) is connected with the power module (10). The electric heating module (30) is connected with the power module (10) and the main control module (20) respectively, and is used for generating heat. The motor driving module (40) is connected with the power module (10) and the main control module (20) respectively, and is used for driving the reflective component to move circularly. The LED backlight module (50) is connected with the power module (10) and the main control module (20) respectively, and is used for providing a reflective light source. The detection module (60) is connected with the power module (10) and the main control module (20) respectively, and is used for detecting the opening and closing state of a furnace door. The main control module (20) can cut off the electric heating module (30) to stop generating heat when a furnace door opening signal is received and a furnace door closing signal is not received within a preset waiting time.

2. The electric fireplace with safety detection function according to claim 1, characterized in that: The detection module (60) comprises a first detection circuit (61) and a second detection circuit (62), the first detection circuit (61) is arranged between a furnace body and a left door and is used for detecting the opening and closing state of the left door, and the second detection circuit (62) is arranged between the furnace body and a right door and is used for detecting the opening and closing state of the right door.

3. The electric fireplace with safety detection function according to claim 2, characterized in that: The first detection circuit (61) comprises a resistor R6, a resistor R10, a resistor R92, a capacitor C4, a capacitor C8, resistors R58-R60, a triode Q6, a first infrared emitter and a first infrared receiver, one end of the resistor R6 is connected with the main control module (20) and one end of the capacitor C4, the other end of the resistor R6 is connected with one end of the resistor R92 and a third end of the first infrared receiver, the other end of the resistor R92 is connected with the power module (10) and one end of the resistor R10, the other end of the resistor R10 is connected with one end of the capacitor C8 and a first end of the first infrared receiver, the other end of the capacitor C4, the other end of the capacitor C8 and a second end of the first infrared receiver are connected with a GND end; one end of a resistor R59 is connected with the main control module (20), the other end of the resistor R59 is connected with one end of a resistor R60 and a base of the triode Q6, a collector of the triode Q6 is connected with a second end of the first infrared emitter, a first end of the first infrared emitter is connected with the power module (10), an emitter of the triode Q6 and the other end of the resistor R60 are connected with the GND end.

4. The electric fireplace with safety detection function according to claim 2, characterized in that: The second detection circuit (62) comprises resistors R66-R67, resistor R69, capacitor C9, capacitor C10, resistor R49, resistors R61-R64, transistor Q7, capacitors C27-C28, second infrared emitter and second infrared receiver, one end of resistor R69 is connected with the master control module (20) and one end of capacitor C9 respectively, the other end of resistor R69 is connected with one end of resistor R67 and the third end of second infrared receiver respectively, the other end of resistor R67 is connected with the power module (10) and one end of resistor R66 respectively, the other end of resistor R66 is connected with one end of capacitor C10 and the first end of second infrared receiver respectively, the other end of capacitor C9, the other end of capacitor C10 and the second end of second infrared receiver are connected with GND terminal; one end of resistor R49, one end of resistor R63 and one end of capacitor C27 are connected with the master control module (20), the other end of resistor R49 is connected with one end of resistor R62 and the base of transistor Q7 respectively, the collector of transistor Q7 is connected with the first end of second infrared emitter through resistor R61, the other end of resistor R63 is connected with one end of resistor R64 and the second end of second infrared emitter respectively, the other end of resistor R64 is connected with the power module (10), one end of capacitor C28 and the third end of second infrared emitter respectively, the other end of capacitor C27, the other end of capacitor C28, the other end of resistor R62, the emitter of transistor Q7 and the fourth end of second infrared emitter are connected with GND terminal.

5. The electric fireplace with safety detection function according to claim 1, characterized in that: The first temperature detection module (71) comprises resistors R1-R2, capacitor C14 and first temperature sensor, one end of resistor R1 is connected with the power module (10), the other end of resistor R1 is connected with one end of resistor R2, one end of capacitor C14 and the second end of first temperature sensor respectively, the other end of resistor R2 is connected with the master control module (20), the other end of capacitor C14 and the first end of first temperature sensor are connected with GND terminal.

6. The electric fireplace with safety detection function according to claim 5, characterized in that: The second temperature detection module (72) comprises resistors R3-R4, capacitor C15 and second temperature sensor, one end of resistor R3 is connected with the power module (10), the other end of resistor R3 is connected with one end of resistor R4, one end of capacitor C15 and the second end of second temperature sensor respectively, the other end of resistor R4 is connected with the master control module (20), the other end of capacitor C15 and the first end of second temperature sensor are connected with GND terminal.

7. The electric fireplace with safety detection function according to claim 1, characterized in that: ​ 8. The electric fireplace with safety detection function according to claim 7, characterized in that: The second temperature detection module (72) comprises an operational amplifier U11, resistors R74, R77, R81-R82, R84, R87, R89, R91, capacitors C12-C13, C40 and a second temperature sensor, one end of the resistor R77 is connected with the master control module (20) and the OUTA pin of the operational amplifier U11 respectively, the other end of the resistor R77 is connected with the IN1- pin of the operational amplifier U11, one end of the resistor R84 is connected with the IN1+ pin of the operational amplifier U11 and one end of the capacitor C40 respectively, the other end of the resistor R84 is connected with the OUT2 pin of the operational amplifier U11 and one end of the resistor R74 respectively, the other end of the resistor R74 is connected with one end of the resistor R87 and the IN2- of the operational amplifier U11 respectively, the other end of the resistor R87 is connected with one end of the capacitor C13, one end of the resistor R81 and the second end of the second temperature sensor respectively, the other end of the resistor R81 is connected with the power module (10), one end of the capacitor C12 is connected with the power module (10) and the VDD pin of the operational amplifier U11 respectively, the IN2+ pin of the operational amplifier U11 is connected with one end of the resistor R89 and one end of the resistor R82 respectively, the other end of the resistor R82 is connected with one end of the resistor R91 and the first end of the second temperature sensor respectively, the other end of the capacitor C40, the other end of the capacitor C12, the GND pin of the operational amplifier U11, the other end of the resistor R89, the other end of the capacitor C13 and the other end of the resistor R91 are connected with the GND terminal.

9. The electric fireplace with safety detection function according to claim 1, characterized in that: The key module (80) connected with the power module (10) and the master control module (20) respectively is further included.

10. The electric fireplace with safety detection function according to claim 1, characterized in that: The display module (90) connected with the power module (10) and the master control module (20) respectively is further included.

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