CN111829025A - Heat insulation type plasma stove - Google Patents
Heat insulation type plasma stove Download PDFInfo
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- CN111829025A CN111829025A CN202010806988.6A CN202010806988A CN111829025A CN 111829025 A CN111829025 A CN 111829025A CN 202010806988 A CN202010806988 A CN 202010806988A CN 111829025 A CN111829025 A CN 111829025A
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- 238000009413 insulation Methods 0.000 title claims abstract description 61
- 230000009466 transformation Effects 0.000 claims abstract description 59
- 238000009434 installation Methods 0.000 claims abstract description 39
- 238000010411 cooking Methods 0.000 claims abstract description 31
- 230000008093 supporting effect Effects 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 239000000565 sealant Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000003993 interaction Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000001131 transforming effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C7/00—Stoves or ranges heated by electric energy
- F24C7/08—Arrangement or mounting of control or safety devices
- F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/46—Generating plasma using applied electromagnetic fields, e.g. high frequency or microwave energy
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Electromagnetism (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electric Stoves And Ranges (AREA)
Abstract
The invention discloses a heat insulation type plasma stove which comprises a base, a stove head and an electric control unit, wherein the stove head comprises a plurality of discharge electrodes exposed out of the base and a voltage transformation module arranged below the discharge electrodes, and the voltage transformation module comprises an installation shell and a voltage transformation circuit unit; the cooking range also comprises a high-temperature-resistant insulating plate which covers the upper end of the mounting shell and is provided with first heat-insulating cavities at intervals, a plurality of wire columns penetrate through the upper end of the mounting shell, and two ends of each wire column are respectively positioned in the first heat-insulating cavities and the mounting shell; the upper end of each wire column in the first heat insulation cavity is electrically connected with a first conductive piece, the first conductive piece is electrically connected with a discharge electrode upwards, and the lower end of each wire column in the installation shell is electrically connected with the transformation circuit unit. The invention has good heat insulation effect between the discharge electrode at the cooking range part of the plasma stove and the voltage transformation circuit unit, and heat is difficult to be downwards conducted to the voltage transformation circuit unit, thereby ensuring the working stability of the voltage transformation circuit unit.
Description
Technical Field
The invention relates to the technical field of cookers, in particular to a heat-insulation type plasma cooker.
Background
Plasma (plasma), also known as plasma, is an ionized gaseous substance consisting of atoms deprived of part of electrons and positive and negative ions produced by ionization of radicals, a macroscopic electrically neutral ionized gas with dimensions greater than the debye length, whose motion is dominated mainly by electromagnetic forces and exhibits a pronounced collective behavior. The plasma is a good electric conductor, and the plasma can be captured, moved and accelerated by utilizing a magnetic field which is skillfully designed. The development of plasma physics provides new technology and process for the further development of science such as materials, energy, information, environmental space, space physics, geophysical and the like. Plasma is a fourth state of matter different from solid, liquid and gas. A substance is composed of molecules, which are composed of atoms, which are composed of a positively charged nucleus and negatively charged electrons surrounding it. When heated to a sufficiently high temperature or for other reasons, the outer electrons become free electrons free from the nuclei, as if the student after class runs to the playground to play at will. The electrons leave the nucleus, a process known as "ionization". At this point, the material becomes a uniform "paste" of positively charged nuclei and negatively charged electrons, and is thus called a plasma because it is called a "paste" by chance, which is a paste of ions of equal total positive and negative charge and therefore nearly electrically neutral.
The plasma stove is a novel stove which utilizes the characteristics of plasma, uses high-voltage electricity to breakdown air to form thermal plasma, converts electric energy into heat energy, finally obtains thermal plasma beams with ideal length and function, and generates the thermal plasma beams with similar flame characteristics to heat a pot for cooking.
The cooking range of the plasma cooking range on the current market has the defects in the aspect of heat insulation:
the discharge electrode on the cooking range ionizes air to generate a large amount of plasma due to the discharge arc, and the plasma releases heat energy to cook, however, a circuit such as a voltage transformation circuit unit is generally arranged in the base below the position of the discharge electrode. The existing plasma stove has no good heat insulation measure between the lower part of a discharge electrode of the stove and the voltage transformation circuit unit, so that heat generated by the stove is very easy to be conducted downwards to the voltage transformation circuit unit, and the stability of the voltage transformation circuit unit is influenced.
Therefore, the prior art has yet to be improved.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a heat insulation type plasma cooking stove, which is capable of providing a good heat insulation effect between a discharge electrode and a transformer circuit unit at a cooking range portion of the plasma cooking stove, and ensuring the stability of the transformer circuit unit in operation because heat is difficult to be conducted downwards to the transformer circuit unit.
In order to realize the purpose, the invention adopts the following technical scheme:
a heat insulation type plasma stove comprises a base, a stove head arranged on the base and an electric control unit arranged on the base, wherein the stove head comprises a plurality of discharge electrodes exposed above the base, the stove head also comprises a voltage transformation module arranged below the discharge electrodes, the voltage transformation module comprises an installation shell arranged on the base and a voltage transformation circuit unit arranged in the installation shell, and the voltage transformation circuit unit is electrically connected with the electric control unit and the discharge electrodes;
the cooking range comprises a mounting shell, a plurality of discharge electrodes and a plurality of heating elements, wherein the cooking range further comprises a high-temperature-resistant insulating plate which covers the upper end of the mounting shell and forms a first heat-insulating cavity with the upper end of the mounting shell at intervals, and the plurality of discharge electrodes are mounted on the high-temperature-resistant insulating plate;
a plurality of wire columns penetrate through the upper end of the mounting shell, and two ends of each wire column are respectively positioned in the first heat insulation cavity and the mounting shell;
the upper end of each wire column in the first heat insulation cavity is electrically connected with a first conductive piece, the first conductive piece is electrically connected with a discharge electrode upwards, and the lower end of each wire column in the installation shell is electrically connected with the transformation circuit unit.
Wherein, the first conductive piece is a first wire spring.
And a second conductive piece is arranged between the lower end of each wire column in the mounting shell and the upper end of the transformation circuit unit at intervals and is electrically connected with the lower end of each wire column.
Wherein, the second conductive piece is a second wire spring.
The transformer circuit unit is arranged in a cavity between the upper cover and the lower cover;
the upper cover comprises a first cover plate part, a second cover plate part and a connecting ring, wherein the first cover plate part and the second cover plate part are downward in a stepped manner from inside to outside, the connecting ring is vertically arranged on the periphery of the second cover plate part, the plurality of conducting wire columns are arranged on the first cover plate part in a penetrating manner, the upper end face of the connecting ring is higher than the upper end face of the first cover plate part, the upper end face of the connecting ring is covered with the lower end face of the high-temperature-resistant insulating plate, and the lower end face of the connecting ring is covered with the upper end face of the;
a gap between the lower end surface of the high-temperature-resistant insulating plate and the upper end surface of the first cover plate part forms the first heat insulation cavity;
and a second heat insulation cavity is formed by a gap between the lower end face of the first cover plate part and the upper end face of the voltage transformation circuit unit, and the plurality of second lead springs are accommodated in the second heat insulation cavity.
The upper end face of the connecting ring and the lower end face of the high-temperature-resistant insulating plate are covered, and a first supporting step is arranged in an annular protruding mode and sealed by sealant;
the upper end face of the middle position of the first cover plate part is also convexly provided with a second supporting step which is abutted against the lower end face of the middle position of the high-temperature resistant insulating plate.
The bottom of the discharge electrode penetrates through the high-temperature-resistant insulating plate, a locking gasket and a locking screw rod are exposed in the first heat-insulating cavity, the upper end of the first lead spring is sleeved outside the locking screw rod and abuts against the locking gasket, and the lower end of the first lead spring is sleeved outside the upper end of the lead column and abuts against the upper end face of the upper cover;
the upper end of the second wire spring is sleeved outside the lower end of the wire column and tightly abuts against the lower end face of the upper cover, and the lower end of the second wire spring tightly abuts against the upper end of the voltage transformation circuit unit.
The upper cover is made of plastic, and the wire guide column and the upper cover are integrally formed through injection molding.
And a negative electrode used for forming a discharge loop with the plurality of discharge electrodes is further arranged above the high-temperature-resistant insulating plate.
The electronic control unit comprises a main control circuit and a power circuit electrically connected with the main control circuit, wherein the output end of the power circuit is electrically connected with the input end of the voltage transformation circuit unit;
the electric control unit also comprises an electric leakage detection circuit electrically connected with the main control circuit;
and the outer wall of the mounting shell is also provided with a temperature sensor which is electrically connected with the main control circuit.
According to the heat insulation type plasma stove, the high-temperature-resistant insulating plate is arranged between the discharge electrode of the stove head and the installation shell of the voltage transformation module, the high-temperature-resistant insulating plate covers the upper end of the installation shell, and the first heat insulation cavity is formed at an interval with the upper end of the installation shell, so that the installation shell is sealed in the cavity below the high-temperature-resistant insulating plate, three layers of heat insulation protection are arranged between the discharge electrode and the voltage transformation circuit unit, the first layer is the high-temperature-resistant insulating plate and directly blocks most of downwards conducted heat, the second layer is the first heat insulation cavity and enables the high-temperature-resistant insulating plate to be in non-contact with the installation shell, the heat on the high-temperature-resistant insulating plate is prevented from being conducted to the installation shell through contact, the third layer is the installation shell, and the installation shell blocks the heat. According to the cooking range of the plasma stove, the heat generated at the position of the discharge electrode is difficult to be downwards conducted to the voltage transformation circuit unit through the three-layer heat insulation protection structure, and a good heat insulation effect can be achieved between the cooking range and the voltage transformation circuit unit, so that the working stability of the voltage transformation circuit unit is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of a first embodiment of an insulated plasma cooker according to the present invention;
FIG. 2 is an exploded view of the structure of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the structure of FIG. 1;
FIG. 4 is a schematic circuit diagram of a first embodiment of the heat insulating type plasma cooker of the present invention;
FIG. 5 is a schematic structural diagram of the mounting case, the high temperature-resistant insulating plate, and the discharge electrode according to the present invention;
FIG. 6 is an exploded view of the structure of FIG. 5;
FIG. 7 is a schematic cross-sectional view of the structure of FIG. 5;
FIG. 8 is an exploded view of the structure of FIG. 7;
FIG. 9 is a schematic cross-sectional view of the upper cover of the mounting housing;
fig. 10 is an enlarged schematic view at a in fig. 7.
Description of reference numerals:
100-plasma body stove, 1-base, 2-cooking range, 3-electric control unit, 31-main control circuit, 32-power supply circuit, 33-electric leakage detection circuit, 4-discharge electrode, 41-locking gasket, 42-locking screw, 5-voltage transformation module, 6-installation shell, 61-upper cover, 611-first cover plate part, 6111-second support step, 612-second cover plate part, 613-connecting ring, 6131-first support step, 62-lower cover, 621-inlet wire connection port, 622-ground wire connection port, 7-voltage transformation circuit unit, 8-high temperature resistant insulation board, 9-wire column, 10-first conductive piece, 11-second conductive piece, 12-negative electrode, 13-temperature sensor, 15-pot support, 16-plug, 17-man-machine interaction panel, 18-switch button, 19-adjusting knob, 201-first heat insulation cavity, 202-second heat insulation cavity.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "connected" may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Referring to fig. 1 to 4, the present invention provides a heat insulation type plasma stove 100, including a base 1, a cooking range 2 disposed on the base 1, and an electric control unit 3 disposed on the base, wherein the cooking range 2 includes a plurality of discharge electrodes 4 exposed above the base, the cooking range 2 further includes a transformer module 5 disposed below the discharge electrodes 4, the transformer module 5 includes an installation housing 6 installed on the base 1 and a transformer circuit unit 7 disposed in the installation housing 6, and the transformer circuit unit 7 is electrically connected to the electric control unit 3 and the discharge electrodes 4. The outer shells of the base 1 and the cooking range 2 are protected and grounded. The cooking range 2 further comprises a pot support 15 which is arranged above the base 1 and used for supporting a pot. The cookware can be made of metal cookware or ceramic cookware and the like.
The electric control unit 3 is used for generating a driving power supply required by the transformation circuit unit 7, and controlling the transformation circuit unit 7 to be switched on and off and output power. The driving power supply generated by the electric control unit 3 is a high-frequency or low-frequency low-voltage power supply, the transformation circuit unit 7 converts the low-voltage power input by the electric control unit 3 into high-voltage power and outputs the high-voltage power to the discharge electrode 4 for discharging, and the electric arc generated by the discharge of the discharge electrode 4 ionizes air to generate high-temperature plasma to heat the pot bottom. In the embodiment of the invention, the electric control unit 3 and the voltage transformation module 5 are arranged in the base 1 in a separated manner. The electronic control unit 3 is connected to an external power supply via a plug 16.
The discharge electrode 4 of the plasma cooker 100 of the present invention is a positive electrode, and when the cookware is a metal cookware, the metal cookware can be directly used as a negative electrode to form a discharge circuit; when the cookware is ceramic cookware, the cooking range 2 is internally provided with a negative electrode independently.
As shown in fig. 4, the electronic control unit 3 according to the embodiment of the present invention includes a main control circuit 31, and a power circuit 32 electrically connected to the main control circuit 31, wherein an output terminal of the power circuit 32 is electrically connected to an input terminal of the voltage transformation circuit unit 7.
The main control circuit 31 can be controlled by a single chip microcomputer in combination with a program, the main control circuit 31 controls the output of the voltage transformation circuit unit 7, and the power circuit 32 provides a driving current for the voltage transformation circuit unit 7. The power supply circuit 32 is connected to the external commercial power through the plug 16.
Preferably, the electronic control unit 3 of the present invention further includes a leakage detecting circuit 33 electrically connected to the main control circuit 31. The electric leakage detection circuit 33 detects whether electric leakage occurs in the base 1, the pot holder 15 of the cooking range 2, the mounting case 6 of the voltage transformation module 5, the pot, etc., and once electric leakage occurs, the main control circuit 31 controls to turn off the power supply of the plasma cooking range 100. Thereby ensuring the use safety.
Preferably, as shown in fig. 5, the plasma cooker 100 of the present invention is further provided with a temperature sensor 13 on an outer wall of the installation case 6 to be electrically connected with the main control circuit 31. The temperature sensor 13 can detect the temperature of the heat generated by the transformer circuit unit 7 or the heat generated by the plasma beam conducted to the mounting case 6, and when the actual temperature of the mounting case 6 exceeds the preset temperature in the working process, the power supply of the transformer circuit unit 7 is cut off, so that the transformer circuit unit 7 stops outputting the electric energy for the discharge electrode and stops the discharge operation, thereby ensuring the use safety. The outer wall of the mounting housing 6 is further provided with an incoming wiring port 621 and an earth wiring port 622, the incoming wiring port 621 electrically connects the transformer circuit unit 7 in the mounting housing 6 with the power circuit 32, and the earth wiring port 622 is used for protecting the mounting housing from being grounded.
In the embodiment of the present invention, the base 1 is further provided with a human-computer interaction panel 17 for controlling the plasma oven 100. The human-computer interaction panel 17 may be provided as a key or a touch screen. The base 1 is further provided with a switch button 18 and an adjusting knob 19 for switching on and off the plasma stove 100 and adjusting output power. The man-machine interaction panel 17, the switch keys 18 and the adjusting knob 19 are all electrically connected with the main control circuit 31.
As shown in fig. 5 to 10, the cooking top 2 of the plasma 100 according to the present invention further includes a high temperature insulating plate 8 covering the upper end of the installation case 6 and having a first heat insulating chamber 201 formed at an interval with the upper end of the installation case 6, and the plurality of discharge electrodes 4 are installed on the high temperature insulating plate 8. Since the mounting case 6 is covered by the high temperature resistant insulating plate 8, the mounting case 6 is sealed in a cavity below the high temperature resistant insulating plate 8. The discharge electrode 4 is installed on the high temperature insulation board 8, and the bottom of the discharge electrode 4 may be fixed on the high temperature insulation board 8 and penetrate through the high temperature insulation board 8 to extend into the first heat insulation cavity 201.
Meanwhile, because the transformation circuit unit 7 in the installation shell 6 needs to be electrically connected with the discharge electrode 4, the upper end of the installation shell 6 of the invention is provided with a plurality of wire columns 9 in a penetrating way, and two ends of each wire column 9 are respectively positioned in the first heat insulation cavity 201 and the installation shell 6; the first heat insulation chamber 201 is electrically connected with a first conductive member 10 at the upper end of each wire column 9, the first conductive member 10 is electrically connected with a discharge electrode 4 upwards, and the lower end of each wire column 9 in the installation shell 6 is electrically connected with the transformation circuit unit 7.
Namely, a plurality of wire posts 9 penetrate through the installation housing 6, the upper end of each wire post 9 extends into the first heat insulation chamber 201 and is electrically connected with the discharge electrode 4 fixed on the high temperature resistant insulation board 8 through the first conductive piece 10, and the lower end of each wire post 9 extends into the installation housing 6 and is directly electrically connected with the transformation circuit unit 7 or is connected through a wire.
The first insulating chamber 201 makes the high temperature-resistant insulating plate 8 not contact with the upper end of the mounting case 6 while the mounting case 6 protects the transformer circuit unit 7 therein.
The structural design in the cooking range 2 of the plasma cooking range 100 enables three layers of heat insulation protection to be arranged between heat generated at the position of the discharge electrode 4 in the cooking range 2 and the voltage transformation circuit unit 7, the first layer is a high-temperature-resistant insulating plate 8 which directly blocks most of heat conducted downwards, the second layer is a first heat insulation cavity 201 which enables the high-temperature-resistant insulating plate 8 to be in non-contact with the installation shell 6, the heat on the high-temperature-resistant insulating plate 8 is prevented from being conducted to the installation shell 6 through direct contact, the third layer is the installation shell 6, and the installation shell 6 blocks the heat in the first heat insulation cavity 201 from being conducted to the voltage transformation circuit unit 7. The three-layer heat insulation protection structure enables the cooking range of the plasma cooking range 100 of the invention to have good heat insulation effect, so that heat generated at the position of the discharge electrode 4 is difficult to be downwards conducted to the voltage transformation circuit unit 7, and the working stability of the voltage transformation circuit unit 7 is ensured.
Preferably, the high-temperature-resistant insulating plate 8 is made of mica, and can resist high temperature of about 1000-1200 ℃.
Further, the first conductive member 10 of the present invention is a first wire spring. That is, the present invention uses a conductive spring as a lead wire for connecting the upper end of the lead wire column 9 and the discharge electrode 4. Because the bottom of the discharge electrode 4 and the upper end of the wire column 9 must be connected by a wire, the wire inevitably conducts a part of the heat at the bottom of the discharge electrode 4 to the wire column 9, however, the present invention adopts the wire spring as the conductive member, which can greatly lengthen the path of heat conduction on the wire, so that most of the heat on the wire is dissipated in the first heat insulation chamber 201 for heat dissipation and is not quickly conducted to the wire column 9. There is an effect of blocking and slowing down the conduction of heat down to the voltage transformation circuit unit 7.
Preferably, a second conductive member 11 is disposed at a distance between the lower end of each wire column 9 and the upper end of the transformer circuit unit 7 in the mounting housing 6 of the present invention and electrically connected thereto. Therefore, the inner wall of the mounting shell 6 is not in contact with the upper end of the transformation circuit unit 7, rapid heat conduction caused by direct contact is avoided, and the heat insulation effect is improved.
Further, the second conductive member 11 of the present invention is a second wire spring. Also, the second wire spring is used as a conductive member between the lower end of the wire column 9 and the upper end of the transforming circuit unit 7, so that the path of heat conduction on the wire can be greatly lengthened, and the effect of blocking and slowing down the downward conduction of heat to the transforming circuit unit 7 can be achieved.
Specifically, as shown in fig. 7 and 8, the mounting case 6 of the present invention includes an upper cover 61 and a lower cover 62, and the voltage transforming circuit unit 7 is disposed in a cavity between the upper cover 61 and the lower cover 62. The mounting case 6 mounts the transformer circuit unit 7 in the base 1, and protects the transformer circuit unit 7 from external interference.
Preferably, the upper cover 61 is made of plastic, and the wire guide post 9 and the upper cover 61 are integrally injection-molded. The plastics material makes upper cover 61 have good insulating effect, and it is convenient for mould plastics into an organic whole structure with wire post 9 and upper cover 61, and after moulding plastics into an organic whole structure, the position homoenergetic that wire post 9 wore to establish upper cover 61 is sealed well, and prevents that the heat from conducting downwards through the perforation department.
As shown in fig. 9, the upper cover 61 includes a first cover plate portion 611 and a second cover plate portion 612 which are stepped downward from inside to outside, and a connecting ring 613 vertically disposed at the periphery of the second cover plate portion 612, the plurality of conductor posts 9 are inserted into the first cover plate portion 611, the upper end surface of the connecting ring 613 is higher than the upper end surface of the first cover plate portion 611, the upper end surface of the connecting ring 613 is covered with the lower end surface of the high temperature-resistant insulating plate 8, and the lower end surface of the connecting ring 613 is covered with the upper end surface of the lower cover 62.
A gap between the lower end surface of the high-temperature-resistant insulating plate 8 and the upper end surface of the first cover plate part 611 forms the first heat insulation cavity 201; a second heat insulation cavity 202 is formed by a gap between the lower end surface of the first cover plate portion 611 and the upper end surface of the transformer circuit unit 7, and the plurality of second wire springs are accommodated in the second heat insulation cavity 202.
The upper cover 61 is formed of a first cover portion 611, a second cover portion 612, and a connecting ring 613, and an upper end surface of the connecting ring 613 is higher than an upper end surface of the first cover portion 611, so that the upper end surface of the upper cover 61 forms a cavity recessed downward and spaced from the high temperature insulating plate 8 to form the first insulating chamber 201.
And the first cover plate portion 611 and the second cover plate portion 612 of the upper cover 61 are arranged downward in a stepped manner from inside to outside, that is, the height of the upper end surface of the first cover plate portion 611 is higher than that of the upper end surface of the second cover plate portion 612, so that the lower end surface of the upper cover 61 forms an upwardly concave cavity which is spaced from the upper end of the voltage transformation circuit unit 7 to form the second heat insulation cavity 202.
The first insulating chamber 201 is formed such that the high temperature-resistant insulating plate 8 does not directly contact the second cover plate portion 612. The second insulating chamber 202 is formed such that the second cover plate portion 612 does not directly contact the upper end of the transformer circuit unit 7, thereby achieving a double-layer insulating effect.
Preferably, a heat dissipating port (not shown) is formed on an inner wall of the connecting ring 613 connected to the second cover plate portion 612 to flow out the hot air in the first insulating chamber 201 to accelerate heat dissipation.
As shown in fig. 9, a first supporting step 6131 is protruded annularly at a position where the upper end surface of the connecting ring 613 and the lower end surface of the high temperature resistant insulating plate 8 are covered, and a sealant is provided for sealing. The first supporting step 6131 and the lower end face cover of the high temperature resistant insulating plate 8 are combined and sealed through a sealant, so that heat is prevented from permeating from the covering position.
The upper end face of the middle position of the first cover plate part 611 is also provided with a second support step 6111 in a protruding way, and the second support step is abutted with the lower end face of the middle position of the high-temperature-resistant insulating plate 8. The second support step 6111 supports the high temperature-resistant insulating plate 8 at the middle position to enhance the supporting effect.
Referring to fig. 10, the bottom of the discharge electrode 4 of the present invention is inserted through the high temperature resistant insulating plate 8, and the locking washer 41 and the locking screw 42 are exposed in the first insulating cavity, the upper end of the first wire spring is sleeved outside the locking screw 42 and abuts against the locking washer 41, and the lower end of the first wire spring is sleeved outside the upper end of the wire column 9 and abuts against the upper end surface of the upper cover 61. The upper end of the second wire spring is sleeved outside the lower end of the wire column 9 and tightly abuts against the lower end face of the upper cover 61, and the lower end of the second wire spring tightly abuts against the upper end of the voltage transformation circuit unit 7.
The locking washer 41 and the locking screw 42 can fix the discharge electrode 4 on the high temperature resistant insulating plate 8, and the first wire spring is conveniently sleeved on the locking screw 42 and abuts against the locking washer 41. The lower end of the first wire spring abuts against the upper end surface of the first cover plate portion 611 of the upper cover, and the upper end of the second wire spring abuts against the lower end surface of the first cover plate portion 611 of the upper cover 61.
With continuing reference to fig. 3, preferably, a negative electrode 12 for forming a discharge circuit with the plurality of discharge electrodes 4 is further disposed above the high temperature resistant insulating plate 8 of the plasma cooker 100 of the present invention. The negative electrode 12 is connected to the power ground on the circuit of the electronic control unit 3.
The negative electrode 12 is independently arranged on the plasma stove 100, so that in the using process, a pot does not serve as a part of an electric loop any more, the method that plasma beams of some existing plasma stoves 100 are generated between a discharge electrode and a pot is changed, and the plasma beams are generated between the discharge electrode and the negative electrode, so that metal and nonmetal pots can be used on the plasma stove 100, and the problems that when the pot is used as a negative electrode, the pot is broken down under the long-time action and the service life of the pot is influenced due to the fact that the plasma directly strikes the bottom of the pot are solved.
It can be understood that the base 1 of the plasma cooker 100 of the present invention may further be provided with a heat dissipation fan, and an air inlet and an air outlet for the heat dissipation fan to intake air and output air. Therefore, heat generated by the voltage transformation module 5 can be quickly blown out of the base 1, and the heat dissipation effect of the whole machine is ensured.
In the heat insulation type plasma stove 100 provided by the embodiment of the invention, the high temperature resistant insulating plate 8 is arranged between the discharge electrode 4 of the stove head 2 and the installation shell 6 of the voltage transformation module 5, the high temperature resistant insulating plate 8 covers the upper end of the installation shell 6, and the first heat insulation cavity 201 is formed at an interval with the upper end of the installation shell 6, so that the installation shell 1 is sealed in a cavity below the high temperature resistant insulating plate 8, three layers of heat insulation protection are formed between the discharge electrode 4 and the voltage transformation circuit unit 7, the first layer is the high temperature resistant insulating plate 8 which directly blocks most of heat conducted downwards, the second layer is the first heat insulation cavity 201 which prevents the high temperature resistant insulating plate 8 from directly contacting with the installation shell 6 to conduct the heat, and the third layer is the installation shell 6 which blocks the heat in the first heat insulation cavity 201 from conducting to the voltage transformation circuit unit 7. Thus, the plasma cooking range 100 of the present invention has a good heat insulation effect between the position of the discharge electrode 4 in the cooking range 2 and the transformer circuit unit, and the heat generated by the discharge electrode 4 is difficult to be conducted downwards to the transformer circuit unit 7, so as to ensure that the transformer circuit unit 7 works reliably.
The above description is only for clearly illustrating the invention and is not therefore to be considered as limiting the scope of the invention, and all embodiments are not intended to be exhaustive, and all equivalent structural changes made by using the technical solutions of the present invention or other related technical fields directly/indirectly applied under the concept of the present invention are included in the scope of the present invention.
Claims (10)
1. A heat insulation type plasma stove comprises a base, a stove head arranged on the base and an electric control unit arranged on the base, wherein the stove head comprises a plurality of discharge electrodes exposed above the base, the stove head also comprises a voltage transformation module arranged below the discharge electrodes, the voltage transformation module comprises an installation shell arranged on the base and a voltage transformation circuit unit arranged in the installation shell, and the voltage transformation circuit unit is electrically connected with the electric control unit and the discharge electrodes;
it is characterized in that the preparation method is characterized in that,
the cooking range also comprises a high-temperature-resistant insulating plate which covers the upper end of the mounting shell and forms a first heat-insulating cavity with the upper end of the mounting shell at intervals, and the plurality of discharge electrodes are mounted on the high-temperature-resistant insulating plate;
a plurality of wire columns penetrate through the upper end of the mounting shell, and two ends of each wire column are respectively positioned in the first heat insulation cavity and the mounting shell;
the upper end of each wire column in the first heat insulation cavity is electrically connected with a first conductive piece, the first conductive piece is electrically connected with a discharge electrode upwards, and the lower end of each wire column in the installation shell is electrically connected with the transformation circuit unit.
2. The plasma range of claim 1, wherein the first conductive member is a first wire spring.
3. The plasma range of claim 1 or 2, wherein a second conductive member is disposed at a distance from and electrically connected to a lower end of each of the wire columns in the installation case and an upper end of the transformer circuit unit.
4. The plasma range of claim 3, wherein the second conductive member is a second wire spring.
5. The heat insulated plasma cooker according to claim 4, wherein the mounting case includes an upper cover and a lower cover, the voltage transformation circuit unit being disposed in a cavity between the upper cover and the lower cover;
the upper cover comprises a first cover plate part, a second cover plate part and a connecting ring, wherein the first cover plate part and the second cover plate part are downward in a stepped manner from inside to outside, the connecting ring is vertically arranged on the periphery of the second cover plate part, the plurality of conducting wire columns are arranged on the first cover plate part in a penetrating manner, the upper end face of the connecting ring is higher than the upper end face of the first cover plate part, the upper end face of the connecting ring is covered with the lower end face of the high-temperature-resistant insulating plate, and the lower end face of the connecting ring is covered with the upper end face of the;
a gap between the lower end surface of the high-temperature-resistant insulating plate and the upper end surface of the first cover plate part forms the first heat insulation cavity;
and a second heat insulation cavity is formed by a gap between the lower end face of the first cover plate part and the upper end face of the voltage transformation circuit unit, and the plurality of second lead springs are accommodated in the second heat insulation cavity.
6. The plasma oven according to claim 5, wherein a first support step is annularly protruded at a position where the upper end surface of the connection ring is covered with the lower end surface of the high temperature resistant insulation plate, and is sealed by a sealant;
the upper end face of the middle position of the first cover plate part is also convexly provided with a second supporting step which is abutted against the lower end face of the middle position of the high-temperature resistant insulating plate.
7. The plasma oven according to claim 5, wherein a high temperature insulation plate is inserted into the bottom of the discharge electrode, and a locking washer and a locking screw are exposed in the first insulation chamber, the upper end of the first wire spring is sleeved outside the locking screw and abuts against the locking washer, and the lower end of the first wire spring is sleeved outside the upper end of the wire column and abuts against the upper end face of the upper cover;
the upper end of the second wire spring is sleeved outside the lower end of the wire column and tightly abuts against the lower end face of the upper cover, and the lower end of the second wire spring tightly abuts against the upper end of the voltage transformation circuit unit.
8. The plasma range of claim 5, wherein the upper cover is made of plastic, and the wire guide post is integrally injection-molded with the upper cover.
9. The plasma range according to claim 1, wherein a negative electrode for forming a discharge circuit with the plurality of discharge electrodes is further disposed above the high temperature-resistant insulating plate.
10. The heat insulation type plasma cooker according to claim 1, wherein the electric control unit includes a main control circuit, a power circuit electrically connected to the main control circuit, an output terminal of the power circuit being electrically connected to an input terminal of the voltage transformation circuit unit;
the electric control unit also comprises an electric leakage detection circuit electrically connected with the main control circuit;
and the outer wall of the mounting shell is also provided with a temperature sensor which is electrically connected with the main control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010806988.6A CN111829025A (en) | 2020-08-12 | 2020-08-12 | Heat insulation type plasma stove |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010806988.6A CN111829025A (en) | 2020-08-12 | 2020-08-12 | Heat insulation type plasma stove |
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| CN111829025A true CN111829025A (en) | 2020-10-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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