CN213207949U - Temperature control structure of electric heating furnace - Google Patents
Temperature control structure of electric heating furnace Download PDFInfo
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- CN213207949U CN213207949U CN202022020687.9U CN202022020687U CN213207949U CN 213207949 U CN213207949 U CN 213207949U CN 202022020687 U CN202022020687 U CN 202022020687U CN 213207949 U CN213207949 U CN 213207949U
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Abstract
The utility model relates to a control by temperature change structure of electric heater, including furnace body and the main control board of setting on the furnace body, its characterized in that: a heating element and a heat energy recovery cover are arranged in the furnace body; the top of the heat energy recovery cover is provided with an opening, and a heat insulation cavity is formed and is covered on the periphery of the heating element; the heat insulation cavity is internally provided with a temperature control piece for monitoring the temperature change inside the heat insulation cavity, the temperature control piece is electrically connected with the main control board, and a circuit of the heating piece is disconnected when the temperature inside the heat insulation cavity exceeds a preset temperature. The temperature control piece can monitor the change of the temperature in the heat insulation cavity when in work, when the temperature in the heat insulation cavity exceeds the preset temperature, the temperature control piece can be tripped off, and a circuit of the heating piece is disconnected, so that the potential safety hazards of damage of the electric heating furnace or fire hazard occurrence and the like caused by the fact that the temperature in the heat insulation cavity reaches the limit temperature are prevented, and the use safety and the stability of the electric heating furnace are improved.
Description
Technical Field
The utility model relates to a temperature control structure of an electric heating furnace.
Background
Chinese patent document No. CN110056916A discloses a multifunctional household electric heating furnace in 26.7.2019, which includes a housing, wherein the upper surface of the housing is provided with a heating area, and the electric heating furnace further includes: the heat dissipation protective layer, the heating assembly and the heat insulation reflecting plate are arranged on the heat dissipation protective layer; the heating assembly is arranged below the heating area and is provided with at least one layer of heating unit, and the heating assembly is used for generating heat required by heating the cooker; the heat dissipation protective layer is arranged between the heating area and the heating assembly and used for absorbing and transferring heat to the heating area; the heat insulation reflecting plate is arranged at the bottom side of the heating assembly and is used for insulating and reflecting heat to the heating area; in order to avoid the direct radiation of the heat of the heating assembly to the main control board, the structure is further provided with a heat dissipation channel and a heat dissipation fan, the heat dissipation channel is arranged on the back face of the shell, the heat dissipation fan is arranged in the shell and right opposite to the heat dissipation channel, and when the heat dissipation fan rotates, the air in the shell is discharged out of the shell through the heat dissipation channel. Although the electric heating furnace can take away heat leaked from the heating body through the cooling fan to dissipate heat for the main control board, the whole electric heating furnace has no temperature control function, the leaked heat of the heating assembly cannot be monitored, and the excessive heat can cause potential safety hazards such as damage to the electric heating furnace or fire hazard. Therefore, further improvements are necessary.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a control by temperature change structure of electric heater to overcome the weak point that can't monitor the heat that heating element leaked among the prior art.
The temperature control structure of the electric heating furnace designed according to the purpose comprises a furnace body and a main control board arranged on the furnace body, and is characterized in that: a heating element and a heat energy recovery cover are arranged in the furnace body; the top of the heat energy recovery cover is provided with an opening, and a heat insulation cavity is formed and is covered on the periphery of the heating element; the heat energy recovery cover on be provided with the accuse temperature spare that is used for monitoring thermal-insulated chamber temperature variation, accuse temperature spare and main control board electric control are connected, and break off the circuit that generates heat the piece when thermal-insulated intracavity portion temperature surpasss preset temperature.
One end of the temperature control part is electrically connected with the heating part, and the other end of the temperature control part is electrically connected with the main control board; the temperature control piece disconnects the working circuit of the heating piece when the temperature in the heat insulation cavity exceeds a preset temperature.
The temperature control member is positioned at the bottom side, or the outer side, or the upper side of the heating member and is fixedly arranged in the heat insulation cavity.
The heating piece is electrically connected with the main control board through the temperature control piece, and a heat dissipation space is formed between the periphery of the heating piece and the inner bottom and/or the inner side wall of the heat energy recovery cover; the temperature control piece is positioned in the heat dissipation interval.
The heat insulation cavity is internally provided with a fixing part which is positioned at the bottom side, or the outer side, or the upper side of the heating part; the temperature control piece is fixedly arranged in the heat insulation cavity through the fixing part.
A boss is arranged on the outer side of the heat insulation cavity close to the heating element; the fixing part be the buckle, and set up on the boss, accuse temperature spare fixing clip establishes on the buckle of boss, perhaps, the fixing part is the fastener, accuse temperature spare passes through the fastener and fixes the setting on the boss.
The furnace body is also provided with a cooling fan, and the cooling fan is electrically connected with the main control board; the bottom of the furnace body is also provided with a bottom plate, an air flowing channel is formed among the bottom plate, the heat energy recovery cover and the furnace body, and the air flowing channel is communicated with the air inlet end of the heat insulation cavity.
The heat radiation fan sucks air outside the furnace body into the air flow channel and then guides the air into the heat insulation cavity, and at least takes away heat leaked outside by the heating part.
The top of the furnace body is also provided with a panel which is covered on the heating piece and is provided with a heating area corresponding to the heating piece.
The heat radiation fan sucks air outside the furnace body into the air flow channel and then guides the air into the heat insulation cavity, and guides and transmits heat leaked outwards from the heating part to the panel.
A heat dissipation cavity is arranged among the furnace body, the panel and the bottom plate, and the heat dissipation cavity is communicated with the air outlet end of the heat insulation cavity; the wind in the heat insulation cavity is discharged out of the furnace body through the heat dissipation cavity.
Through the improvement of the structure, the temperature control piece for monitoring the temperature change in the heat insulation cavity is arranged in the heat insulation cavity, and the temperature control piece can monitor the temperature change in the heat insulation cavity during working; when the temperature in the heat insulation cavity exceeds the preset temperature, the temperature control piece can be tripped off, and a circuit of the heating piece is disconnected, so that potential safety hazards such as damage of the electric heating furnace or fire hazard caused by the fact that the temperature in the heat insulation cavity reaches the limit temperature are prevented, and the use safety and the stability of the electric heating furnace are improved.
The heat energy recovery cover is provided with a through hole communicated with the heat insulation cavity, and the temperature control piece is installed in a matching way with the through hole; the temperature control piece can be arranged at any position of the upper, middle, lower and periphery of the through hole, and the temperature control piece can directly sense the heat or the temperature in the heat insulation cavity.
In summary, the multifunctional electric heating cooker has the characteristics of simple and reasonable structure, excellent performance, low manufacturing cost, convenience in use, safety, reliability and the like, and is high in practicability.
Drawings
Fig. 1 and 2 are schematic exploded structural diagrams according to an embodiment of the present invention.
Fig. 3 and 4 are schematic views of an assembly structure according to an embodiment of the present invention.
Fig. 5 is a schematic view of an assembly structure of the present invention with a panel omitted.
Fig. 6 is an enlarged schematic view of a portion a in fig. 5.
Fig. 7 is a schematic view of an assembly structure of the present invention with the bottom plate omitted.
Fig. 8 is a schematic view of the wind flow according to an embodiment of the present invention.
Fig. 9 is a schematic view of a first assembly structure of the heat energy recovery cover and the temperature control member of the present invention.
Fig. 10 is a schematic view of a second assembly structure of the heat energy recovery cover and the temperature control member according to the present invention.
Fig. 11 is a schematic view of a third assembly structure of the heat energy recovery cover and the temperature control member of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
Referring to fig. 1-8, the temperature control structure of the electric heating furnace comprises a furnace body 1 and a main control board 10 arranged on the furnace body 1, wherein a heating element 4 and a heat energy recovery cover 5 are arranged in the furnace body 1; the top of the heat energy recovery cover 5 is provided with an opening and a heat insulation cavity 7 is formed and covers the periphery of the heating element 4; the heat insulation cavity 7 is internally provided with a temperature control member 40 for monitoring the temperature change inside the heat insulation cavity, the temperature control member 40 is electrically connected with the main control board 10, and the circuit of the heating member 4 is disconnected when the temperature inside the heat insulation cavity 7 exceeds the preset temperature.
A temperature control piece 40 for monitoring the internal temperature change of the heat insulation cavity 7 is arranged in the heat insulation cavity 7, and the temperature control piece 40 can monitor the internal temperature change of the heat insulation cavity 7 when in work; when the temperature in the heat insulation cavity 7 exceeds the preset temperature, the temperature control member 40 will be tripped off, and the circuit of the heating member 4 is disconnected, so that the potential safety hazards of damage of the electric heating furnace or fire hazard caused by the fact that the temperature in the heat insulation cavity 7 reaches the limit temperature are prevented, and the use safety and stability of the electric heating furnace are improved.
Specifically, one end of the temperature control member 40 is electrically connected with the heating member 4, and the other end is electrically connected with the main control board 10; the temperature control member 40 disconnects the working circuit of the heating member 4 when the temperature inside the heat insulation cavity 7 exceeds a preset temperature; to prevent a series of problems caused by the temperature in the heat insulating chamber 7 reaching the limit temperature.
The temperature controlling member 40 may be a fuse, or a kick type temperature controlling switch, or an NTC thermistor thermostat.
When the temperature control member 40 is a fuse, it can use a metal conductor as a melt to be connected in series in a circuit between the heating member 4 and the main control board 10, and when the temperature inside the heat insulation cavity 7 exceeds a preset temperature, and the melt is automatically fused, thereby disconnecting the working circuit of the heating member 4 and powering off the heating member 4.
When the temperature control member 40 is a kick type temperature control switch, it can use a bimetal as a temperature sensor, when the temperature inside the heat insulation cavity 7 is normal, the kick type temperature control switch is in a normally closed state, and when the temperature inside the heat insulation cavity 7 exceeds a preset temperature, the kick type temperature control switch is turned off, thereby turning off the working circuit of the heating member 4. When the temperature in the heat insulation cavity 7 is recovered to be normal, the contacts are closed again, and the circuit between the main control board 10 and the heating element 4 is normally connected.
When the temperature controlling member 40 is an NTC thermistor temperature controller, the resistance value thereof changes with the temperature change inside the heat insulating chamber 7, and by using this characteristic, the NTC thermistor temperature controller can sense the information of the temperature change inside the heat insulating chamber 7 by measuring the resistance value thereof, and the operating circuit of the heat generating member 4 is disconnected by the logic circuit. When the temperature in the heat insulation cavity 7 is recovered to be normal, the NTC thermistor temperature controller controls the main control board 10 to be connected with the heating element 4 again.
Further, the temperature control member 40 is located at the bottom side, or the outer side, or the upper side of the heat generating member 4, and is fixedly disposed in the heat insulating chamber 7.
The heating element 4 is electrically connected with the main control board 10 through the temperature control element 40, and a heat dissipation space is formed between the periphery of the heating element and the inner bottom and/or the inner side wall of the heat energy recovery cover 5; the temperature control member 40 is located in the heat dissipation space.
In order to make the assembly of the temperature control member 40 more firm, a fixing part 41 is arranged in the heat insulation cavity 7, and the fixing part 41 is positioned at the bottom side, or the outer side, or the upper side of the heating member 4; the temperature control member 40 is fixedly arranged in the heat insulation cavity 7 through a fixing part 41.
Further, a boss 32 is arranged inside the heat insulation cavity 7 and close to the outer side of the heating element 4; fixed part 41 for the buckle and set up on boss 32, accuse temperature piece 40 fixing clip establish on the buckle of boss 32, perhaps, fixed part 41 is the fastener, accuse temperature piece 40 passes through the fixed setting of fastener on boss 32 to simplify the assembly process of accuse temperature piece 40, reduction in production cost.
In order to ensure that the electric heating furnace can be stably used, the furnace body 1 of the embodiment can be further provided with a cooling fan 9, and the cooling fan 9 is electrically connected with a main control board 10; the bottom of the furnace body 1 is also provided with a bottom plate 3, an air flowing channel 33 is formed between the bottom plate 3, the heat energy recovery cover 5 and the furnace body 1, and the air flowing channel 33 is communicated with the air inlet end of the heat insulation cavity 7.
The top of the furnace body 1 is also provided with a panel 2, the panel 2 is covered on the heating element 4, and a heating area is arranged corresponding to the heating element 4.
When the heat radiation fan 9 works, the air outside the furnace body 1 can be pumped into the air flowing channel 33 and then guided into the heat insulation cavity 7, the heat leaked outwards from the heating part 4 is taken away, and the heat leaked outwards from the heating part 4 is guided and transmitted to the panel 2.
In order to facilitate the heat in the heat insulation cavity 7 to be discharged, a heat dissipation cavity 19 is arranged among the furnace body 1, the panel 2 and the bottom plate 3, and the heat dissipation cavity 19 is communicated with the air outlet end of the heat insulation cavity 7; the wind in the heat insulation chamber 7 is discharged out of the furnace body 1 through the heat dissipation chamber 19.
As shown in fig. 7 and 8, the operation principle is as follows:
when the electric heating furnace works, heat leaked by the heating part 4 radiates to the inside of the furnace body 1, and under the shielding effect of the heat insulation cavity 7, the electric heating furnace is divided into different areas from top to bottom and from left to right. According to the principle that heat is transferred in all directions, the inside of the electric heating furnace generates a plurality of hot air flows in different directions. Meanwhile, due to the arrangement of the air flow channel 33, when the heat radiation fan 9 rotates to work, a negative pressure state is formed inside the furnace body 1, the air outside the furnace body 1 is sucked into the air flow channel 33, guided into the heat insulation cavity 7 and finally discharged out of the furnace body 1 from the heat radiation cavity 19.
The flow path of the wind is shown by arrows in fig. 7 and fig. 8, the wind can radiate the main control board 10 in the whole flowing process, and can also radiate components such as the heating part 4, so that the utilization rate of the cooling fan 9 is improved, the main control board 10, the heating part 4 and other components can be radiated at the same time, the use function of the cooling fan 9 is improved, and the heat exchange efficiency is improved.
And, the wind that flows inside heat recovery cover 5 can also guide the heat that generates heat 4 and leak, makes the heat no longer transmit to panel 2 towards all directions, only can the direction from bottom to top to transmit to the panel to effectively utilized the heat that generates heat 4 and leak, improved the efficiency of its heat to panel 2 transmission, reduced the heat loss, promoted thermal utilization efficiency, reduced the energy consumption.
The temperature in the heat insulation cavity 7 tends to be balanced and reaches a certain degree, and the heated body can be heated by the panel 2, so that the heat utilization rate is greatly improved.
The following is a specific embodiment of the temperature control member 40:
as shown in fig. 9-11, the heat energy recovery cover 5 is provided with a through hole 501 communicated with the heat insulation cavity 7, and the temperature control member 40 is installed in cooperation with the through hole 501; the position where the temperature control member 40 is installed can be any position of the upper, middle, lower and periphery of the through hole 501, and the temperature control member 40 can directly sense the heat or temperature in the heat insulation cavity 7.
As shown in fig. 9, the temperature control member 40 is installed in the through hole 501, the top surface of the temperature control member 40 is lower than the inner end surface of the thermal insulation cavity 7 around the through hole 501, a support block 502 is arranged below the through hole 501 to support the bottom surface of the temperature control member 40, the support block 502 is connected with the heat energy recovery cover 5 through a fastener, and the top surface of the temperature control member 40 is limited by a step in the through hole 501.
As shown in fig. 10, the temperature controlling member 40 is installed in the through hole 501, the top surface of the temperature controlling member 40 is substantially flush with the inner end surface of the thermal insulation cavity 7 around the through hole 501, a support block 502 is arranged below the through hole 501 to support the bottom surface of the temperature controlling member 40, the support block 502 is connected with the heat energy recovery cover 5 through a fastener, and the top surface of the temperature controlling member 40 is limited by a cross bar 503 on the through hole 501.
As shown in fig. 11, a cavity 504 is formed in the inner end surface of the heat insulation cavity 7, a through hole 501 is formed in the cavity 504, the temperature control member 40 is installed in the through hole 501, the top surface of the temperature control member 40 is higher than the through hole 501 and partially extends into the cavity 504, a support block 502 is arranged below the through hole 501 to support the bottom surface of the temperature control member 40, the support block 502 is connected with the heat energy recovery cover 5 through a fastener, and the top surface of the temperature control member 40 is limited by a cross bar 505 in the cavity 504.
The foregoing is a preferred embodiment of the present invention showing and describing the basic principles, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but rather that various changes and modifications may be made without departing from the spirit and scope of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims (10)
1. The utility model provides a control by temperature change structure of electric heater, includes furnace body (1) and main control board (10) of setting on furnace body (1), its characterized in that: a heating element (4) and a heat energy recovery cover (5) are arranged in the furnace body (1); the top of the heat energy recovery cover (5) is provided with an opening, and a heat insulation cavity (7) is formed and covers the periphery of the heating element (4); the heat energy recovery cover (5) on be provided with and be used for monitoring thermal-insulated chamber (7) temperature variation's accuse temperature spare (40), accuse temperature spare (40) and main control board (10) automatically controlled be connected, and break off the circuit that generates heat piece (4) when thermal-insulated chamber (7) inside temperature surpasss preset temperature.
2. The temperature control structure of the electric heating furnace as claimed in claim 1, wherein: one end of the temperature control part (40) is electrically connected with the heating part (4), and the other end of the temperature control part is electrically connected with the main control panel (10); and the temperature control member (40) disconnects the working circuit of the heating member (4) when the temperature in the heat insulation cavity (7) exceeds a preset temperature.
3. The temperature control structure of an electric heating furnace according to claim 2, characterized in that: the temperature control member (40) is positioned at the bottom side, or the outer side, or the upper side of the heating member (4) and is fixedly arranged in the heat insulation cavity (7).
4. The temperature control structure of the electric heating furnace as claimed in claim 3, wherein: the heating part (4) is electrically connected with the main control board (10) through a temperature control part (40), and a heat dissipation space is formed between the periphery of the heating part and the inner bottom and/or the inner side wall of the heat energy recovery cover (5); the temperature control member (40) is positioned in the heat dissipation interval.
5. The temperature control structure of the electric heating furnace according to claim 3 or 4, wherein: a fixing part (41) is arranged in the heat insulation cavity (7), and the fixing part (41) is positioned at the bottom side, or the outer side, or the upper side of the heating element (4); the temperature control piece (40) is fixedly arranged in the heat insulation cavity (7) through a fixing part (41).
6. The temperature control structure of an electric heating furnace as claimed in claim 5, wherein: a boss (32) is arranged on the outer side of the heat insulation cavity (7) close to the heating element (4); fixed part (41) for the buckle and set up on boss (32), accuse temperature spare (40) fixed card establish on the buckle of boss (32), perhaps, fixed part (41) are the fastener, accuse temperature spare (40) pass through the fastener fixed setting on boss (32).
7. The temperature control structure of an electric heating furnace according to claim 1, or 2, or 3, or 4, or 6, characterized in that: the furnace body (1) is also provided with a cooling fan (9), and the cooling fan (9) is electrically connected with a main control board (10); the bottom of the furnace body (1) is also provided with a bottom plate (3), an air flowing channel (33) is formed among the bottom plate (3), the heat energy recovery cover (5) and the furnace body (1), and the air flowing channel (33) is communicated with the air inlet end of the heat insulation cavity (7);
the heat radiation fan (9) sucks air outside the furnace body (1) into the air flowing channel (33) and then guides the air into the heat insulation cavity (7), and at least takes away heat leaked outside the heating element (4).
8. The temperature control structure of an electric heating furnace as claimed in claim 7, wherein: the top of the furnace body (1) is also provided with a panel (2), the panel (2) is covered on the heating piece (4), and a heating area is arranged corresponding to the heating piece (4);
the heat radiation fan (9) pumps the air outside the furnace body (1) into the air flowing channel (33) and then leads the air into the heat insulation cavity (7), and guides and transmits the heat leaked outside the heating element (4) to the panel (2).
9. The temperature control structure of the electric heating furnace of claim 8, wherein: a heat dissipation cavity (19) is arranged among the furnace body (1), the panel (2) and the bottom plate (3), and the heat dissipation cavity (19) is communicated with the air outlet end of the heat insulation cavity (7); the wind in the heat insulation cavity (7) is discharged out of the furnace body (1) through the heat dissipation cavity (19).
10. The temperature control structure of the electric heating furnace as claimed in claim 1, wherein: the heat energy recovery cover (5) is provided with a through hole (501) communicated with the heat insulation cavity (7), and the temperature control piece (40) is installed in a matching way with the through hole (501).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022020687.9U CN213207949U (en) | 2020-09-15 | 2020-09-15 | Temperature control structure of electric heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022020687.9U CN213207949U (en) | 2020-09-15 | 2020-09-15 | Temperature control structure of electric heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213207949U true CN213207949U (en) | 2021-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022020687.9U Active CN213207949U (en) | 2020-09-15 | 2020-09-15 | Temperature control structure of electric heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213207949U (en) |
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2020
- 2020-09-15 CN CN202022020687.9U patent/CN213207949U/en active Active
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