CN220338527U - Electric stove - Google Patents

Abstract

The utility model relates to an electric stove, which comprises a shell, a first mounting plate, a second mounting plate, a positive electrode, a negative electrode and a circuit board, wherein the first mounting plate is arranged on the shell; the first mounting plate and the second mounting plate are both arranged on the shell, the first mounting plate and the second mounting plate are insulated, and the second mounting plate can conduct electricity; the positive electrode is arranged on the first mounting plate, the negative electrode is arranged on the second mounting plate, and the negative electrode is electrically connected with the second mounting plate; the circuit board is arranged in the shell and is provided with a plurality of positive pole guide posts connected with the positive pole of the power supply. The positive electrode is electrically connected to the positive electrode guide post, and the second mounting plate is electrically connected to the negative electrode of the power supply. All negative electrodes are arranged on the second mounting plate and are connected with the negative electrode of the power supply by the second mounting plate, and the negative electrodes are not required to be connected with the circuit board by means of plasma needles, so that arc discharge among the plasma needles with different polarities is avoided, and the internal elements of the electric combustion stove can be effectively prevented from being damaged by the arc.

Description

Electric stove

Technical Field

The utility model relates to the technical field of electric stoves, in particular to an electric stove.

Background

The existing electric cooker is provided with a positive electrode and a negative electrode for generating plasma, each positive electrode and each negative electrode are connected to a circuit board through a plasma needle, and at the moment, the risk of arc discharge exists between the plasma needles, namely, the plasma is generated between the plasma needle connected with the positive electrode and the plasma needle connected with the negative electrode, and at the moment, the inside of the electric cooker is damaged.

Disclosure of Invention

In view of the above, the present utility model provides an electric cooker for solving the problem of arcing between a plasma needle connected to a positive electrode and a plasma needle connected to a negative electrode in the prior art.

To achieve one or some or all of the above or other objects, the present utility model provides:

an electric stove comprises a shell, a first mounting plate, a second mounting plate, a plurality of positive electrodes, a plurality of negative electrodes and a circuit board;

the first mounting plate and the second mounting plate are both arranged on the shell, the first mounting plate and the second mounting plate are connected in an insulating way, and the second mounting plate can conduct electricity;

the positive electrode is detachably arranged on the first mounting plate, the negative electrode is detachably arranged on the second mounting plate, the negative electrode is electrically connected with the second mounting plate, and the positive electrode and the negative electrode are both positioned on the top of the shell;

the circuit board is arranged in the shell, a plurality of positive pole guide posts are arranged on the circuit board, and the positive pole guide posts are connected with the positive pole of the power supply;

the positive electrodes are respectively and electrically connected to the positive electrode guide posts, and the second mounting plate is electrically connected to the power supply negative electrode.

Preferably, the second mounting plate is located above the first mounting plate, the positive electrode and the negative electrode are located above the second mounting plate, a plurality of mounting holes are formed in the second mounting plate, and one end of the positive electrode penetrates through the mounting holes and then is connected to the first mounting plate.

Preferably, the first mounting plate is made of insulating materials, a plurality of plasma needles penetrate and are inserted into the first mounting plate, the lower ends of the plasma needles are respectively and electrically connected to a plurality of positive pole guide posts, the upper ends of the plasma needles are located in the mounting holes and are detachably connected with the positive poles, and the plasma needles are further electrically connected with the positive poles.

Preferably, the positive electrode is threaded onto the plasma needle and the negative electrode is threaded onto the second mounting plate.

Preferably, the negative electrode is in a cylindrical structure, a plurality of negative electrodes are respectively arranged around the plurality of positive electrodes in a one-to-one correspondence mode, the axis of the negative electrode coincides with the axis of the positive electrode, and the negative electrodes are in threaded connection in the mounting holes.

Preferably, the top side of the casing is a conductive guide plate, the top surface of the guide plate is covered with a glass layer, the second mounting plate is mounted on the top surface of the guide plate, the first mounting plate is arranged in the casing, the second mounting plate is electrically connected with the guide plate, and the guide plate is electrically connected to the power supply cathode.

Preferably, the guide plate is connected with the second mounting plate through bolts, the first mounting plate is connected with the second mounting plate through bolts, and a mica plate is arranged between the first mounting plate and the second mounting plate.

Preferably, the bolts connecting the guide plate and the second mounting plate also penetrate to connect a tab terminal located below the guide plate, the tab terminal being electrically connected to the power supply negative electrode.

Preferably, the second mounting plate is connected with a pot ring in an insulating manner, and the pot ring is arranged around the second mounting plate.

Preferably, the second mounting plate is also grounded.

The implementation of the embodiment of the utility model has the following beneficial effects:

after the electric stove is adopted, the positive electrode connected with the positive electrode of the direct current power supply and the negative electrode connected with the negative electrode of the direct current power supply are separately arranged, all the negative electrodes are mounted on the second mounting plate, the power supply negative electrode is connected by the second mounting plate, the negative electrodes are not connected with the circuit board by means of the plasma needles, and the phenomenon of arc discharge between the plasma needles with different polarities is avoided. The arrangement also enables all electric arcs to be generated on the positive electrode, and the positive electrode is positioned at the top of the shell, so that the internal elements of the electric stove can be effectively prevented from being damaged by the electric arcs.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional view of an overall structure according to an embodiment of the present utility model.

Fig. 2 is a schematic cross-sectional view of a portion of a structure according to an embodiment of the present utility model.

Fig. 3 is a schematic view of the junction structure of tab terminals.

Fig. 4 is a schematic diagram of the connection of the first mounting plate, the second mounting plate, the positive electrode and the negative electrode.

Fig. 5 is a schematic view showing the positions of the positive and negative contact points on the circuit board in one embodiment.

Wherein:

the cooker comprises a shell 1, a guide plate 11, a glass layer 12 and a cooker ring 13;

a first mounting plate 2, a plasma needle 21;

a second mounting plate 3, a mounting hole 31;

mica plate 230;

a positive electrode 4;

a negative electrode 5;

a circuit board 6, a positive pole post 61, a negative contact 62, and a tab terminal 63.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model; the terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In order to make the person skilled in the art better understand the solution of the present utility model, the technical solution of the embodiment of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

Referring to fig. 1 to 5, the present utility model provides an electric cooker, which comprises a housing 1, a first mounting plate 2, a second mounting plate 3, a plurality of positive electrodes 4, a plurality of negative electrodes 5 and a circuit board 6.

The first mounting plate 2 and the second mounting plate 3 are all installed on the casing 1, and are connected in an insulating manner between the first mounting plate 2 and the second mounting plate 3, and the second mounting plate 3 can conduct electricity, and the second mounting plate 3 can be made of iron, steel and the like. In a preferred embodiment, the first mounting plate 2 is made of an insulating material, such as ceramic, mica, etc., and the second mounting plate 3 is connected to the first mounting plate 2 through bolts, and a mica plate 230 is further sandwiched between the second mounting plate 3 and the first mounting plate 2.

The positive electrode 4 is detachably mounted on the first mounting plate 2, the negative electrode 5 is detachably mounted on the second mounting plate 3, and the negative electrode 5 is electrically connected with the second mounting plate 3, and the positive electrode 4 and the negative electrode 5 are both positioned at the top of the casing 1.

The casing 1 is provided with a transformer and a rectifier, the transformer is used for adjusting the input voltage to the required high voltage, then the transformer is connected with the rectifier, the rectifier is used for converting the high-voltage alternating current into the high-voltage direct current, and therefore the output end of the rectifier outputs the direct current. The transformer and rectifier are not shown in the figures. The circuit board 6 is installed in the casing 1, as shown in fig. 5, a plurality of positive pole guide posts 61 and a negative pole contact 62 are disposed on the circuit board 6, the plurality of positive pole guide posts 61 are all connected with the positive pole of the rectifier, and the negative pole contact 62 is connected with the negative pole of the rectifier. Of course, in other embodiments, the circuit board may not have the negative contact 62 thereon and the second mounting plate may be directly connected to the rectifier negative.

In this embodiment, the circuit board is optionally provided with a negative electrode contact, the plurality of positive electrodes 4 are respectively electrically connected to the plurality of positive electrode pillars 61, specifically, the electrical connection is achieved through a plasma needle, and the second mounting plate 3 is electrically connected to the negative electrode contact 62. So that a high voltage is generated at the positive electrode 4 and a voltage at the negative electrode 5 is zero, a great voltage difference exists between the positive electrode 4 and the negative electrode 5, which voltage difference is sufficient to cause the air between the positive electrode 4 and the nearest-neighbor negative electrode 5 to be broken down, so that an arc is generated between the positive electrode 4 and the nearest-neighbor negative electrode 5, while a high temperature is generated. In addition, the shell 1 is provided with the pot ring 13, so that the pot can be placed on the pot ring 13, the bottom of the pot is close to the electric arc, and the high temperature generated by the electric arc can be used for cooking food.

Specifically, in the electric cooker, the positive electrode 4 connected with the positive electrode of the direct current power supply and the negative electrode 5 connected with the negative electrode of the direct current power supply are separately arranged, all the negative electrodes 5 are mounted on the second mounting plate 3, the power supply negative electrode is connected by the second mounting plate, the negative electrodes are not required to be connected with the circuit board by means of the plasma needles, and the phenomenon of arc discharge between the plasma needles with different polarities is avoided. So set up also to make all electric arcs all produce on the positive electrode, the positive electrode is located the casing top again, even appear drawing the arc phenomenon between positive electrode and the second mounting panel, the electric arc of production also can't enter into the casing inside, can effectively prevent that electric stove inner element from being damaged by the electric arc. Meanwhile, the electric connection structure of the electric stove is simpler and clearer, the positive electrode 4 and the negative electrode 5 are more conveniently distinguished, and the electric stove is beneficial to maintenance and assembly work.

The positive electrodes 4 need to be connected with the positive electrode guide posts 61 respectively, the positive electrode guide posts 61 are in parallel connection, and the circuit board 6 can adjust the current intensity passing through each positive electrode guide post 61, so as to adjust the fire intensity of the electric stove, for example, when the electric stove is controlled to be small fire, only a few positive electrode guide posts in the middle part are electrified.

Further, referring to fig. 2, in the specific electrical connection structure of the electric cooker, in the preferred embodiment of the present utility model, the second mounting plate 3 is located above the first mounting plate 2, the positive electrode 4 and the negative electrode 5 are both located above the second mounting plate 3, and a plurality of mounting holes 31 are formed in the second mounting plate 3. The first mounting plate 2 is penetrated and inserted with a plurality of plasma needles 21, and the lower ends of the plasma needles 21 are respectively and electrically abutted on the plurality of positive pole guide posts 61, so that the plasma needles 21 and the positive pole guide posts 61 are in one-to-one correspondence, namely, all the plasma needles are of positive pole polarity, and arcing phenomenon can not occur between the plasma needles of the same polarity. The upper end of the plasma needle 21 is located in the mounting hole 31 and is detachably connected with the positive electrode 4 in a plug-in or threaded connection, preferably in a threaded connection. The plasma needle 21 and the positive electrode 4 are both made of metal, such as iron or steel, so that the plasma needle 21 is electrically connected with the positive electrode 4, and the positive electrode 4 can be electrically connected with the positive electrode guide post 61 through the plasma needle 21. It should be noted that the distance between the plasma needle 21 and the inner side edge of the mounting hole 31 is sufficiently large to prevent the plasma needle 21 from directly discharging to the second mounting plate 3.

On the other hand, referring to fig. 2 and 4, the negative electrode 5 is in a cylindrical structure, and a plurality of negative electrodes 5 are respectively arranged around a plurality of positive electrodes 4 in a one-to-one correspondence manner, the axis of the negative electrode 5 coincides with the axis of the positive electrode 4, an external thread is arranged at the lower end of the negative electrode 5, and an internal thread is arranged in the mounting hole 31, so that the negative electrode 5 is in threaded connection with the mounting hole 31, and the threads are not shown in the drawings. Similarly, the negative electrode 5 and the second mounting plate 3 are made of metal, such as iron, steel, etc., and are screwed together to complete electrical connection. All negative electrodes 5 are mounted on the second mounting plate 3, all positive electrodes 4 are mounted on the plasma needles 21 of the first mounting plate 2, and the positive electrodes 4 and the negative electrodes 5 are clearly distinguished.

Regarding the arrangement of the negative electrode 5 in a cylindrical shape around the positive electrode 4, there is also an effect of the other aspect. The electric cooker can be provided with the fan and the air guide groove on the first mounting plate 2, so that the air guide groove is communicated with the mounting hole 31, at the moment, the rotation of the fan can drive the air in the air guide groove to flow, the air is driven to obliquely upwards flow into the cylindrical negative electrode 5, the inside of the negative electrode 5 forms a cyclone, the cyclone can be used for driving an electric arc to move, and the discharging position is changed, so that the service lives of the positive electrode 4 and the negative electrode 5 are prolonged.

Further, the top side of the casing 1 is a metal guide plate 11 made of iron, steel or the like, the guide plate 11 is fixedly mounted on the casing 1, and the top surface of the guide plate 11 is also covered with a glass layer 12. The second mounting plate 3 is mounted on the top surface of the guide plate 11, the first mounting plate 2 is disposed in the housing 1, the second mounting plate 3 is electrically connected to the guide plate 11, and the guide plate 11 is electrically connected to the negative contact 62. Wherein, glass layer 12 is glass ceramic board, has insulating effect, and glass layer 12 is still convenient for clean simultaneously. Specifically, the guide plate 11 and the second mounting plate 3 are connected by bolts, and the bolts connecting the guide plate 11 and the second mounting plate 3 are also penetratingly connected with tab terminals 63, the tab terminals 63 being located below the guide plate 11, the tab terminals 63 being electrically connected to the negative contact 62 by wires.

On the other hand, in order to make the user feel safe, the negative electrode contact 62 is grounded to ensure that the voltage of the guide plate 11, the second mounting plate 3 and the negative electrode 5 is zero, and no electric shock is caused when the user touches the second mounting plate 3 or the guide plate 11.

Further, as shown in fig. 1 and 2, the second mounting plate 3 is positioned on the top surface of the casing 1, and the pan ring 13 is mounted on the second mounting plate 3, and the position of the pan ring 13 relative to the casing 1 is fixed. The insulating between the pan ring 13 and the second mounting plate 3 can be provided, the pan ring 13 being arranged around the second mounting plate 3, i.e. enclosing all positive electrodes 4 and all negative electrodes 5, the pan ring 13 being intended to bear against the pan and also to prevent accidental approaching of the limbs of the user to the arc.

It is apparent that the above-described embodiments are only some embodiments of the present utility model, but not all embodiments, and the preferred embodiments of the present utility model are shown in the drawings, which do not limit the scope of the patent claims. This utility model may be embodied in many different forms, but rather, embodiments are provided in order to provide a thorough and complete understanding of the present disclosure. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing description, or equivalents may be substituted for elements thereof. All equivalent structures made by the content of the specification and the drawings of the utility model are directly or indirectly applied to other related technical fields, and are also within the scope of the utility model.

Claims (10)

1. An electric stove is characterized by comprising a shell, a first mounting plate, a second mounting plate, a plurality of positive electrodes, a plurality of negative electrodes and a circuit board;

the first mounting plate and the second mounting plate are both mounted on the shell, the first mounting plate and the second mounting plate are connected in an insulating way, and the second mounting plate can conduct electricity;

the positive electrode is detachably arranged on the first mounting plate, the negative electrode is detachably arranged on the second mounting plate, the negative electrode is electrically connected with the second mounting plate, and the positive electrode and the negative electrode are both positioned on the top of the shell;

the circuit board is arranged in the shell, a plurality of positive pole guide posts are arranged on the circuit board, and the positive pole guide posts are connected with the positive pole of the power supply;

the positive electrodes are respectively and electrically connected to the positive electrode guide posts, and the second mounting plate is electrically connected to the power supply negative electrode.

2. The electric cooking range of claim 1, wherein the second mounting plate is located above the first mounting plate, the positive electrode and the negative electrode are both located above the second mounting plate, a plurality of mounting holes are formed in the second mounting plate, and one end of the positive electrode passes through the mounting holes and is connected to the first mounting plate.

3. The electric cooker of claim 2, wherein the first mounting plate is made of an insulating material, a plurality of plasma needles penetrate and are inserted into the first mounting plate, the lower ends of the plasma needles are respectively and electrically connected to a plurality of positive pole guide posts, the upper ends of the plasma needles are positioned in the mounting holes and are detachably connected with the positive poles, and the plasma needles are also electrically connected with the positive poles.

4. An electric cooking appliance as claimed in claim 3, characterized in that the positive electrode is screwed to the plasma needle and the negative electrode is screwed to the second mounting plate.

5. The electric cooker according to claim 4, wherein the negative electrode has a cylindrical structure, and a plurality of the negative electrodes are arranged around the plurality of positive electrodes in one-to-one correspondence, respectively, an axial center of the negative electrode coincides with an axial center of the positive electrode, and the negative electrodes are screwed in the mounting holes.

6. An electric cooking stove as claimed in claim 1, characterized in that the top side of the housing is a conductive guide plate, the guide plate top surface is covered with a glass layer, the second mounting plate is mounted on the guide plate top surface, the first mounting plate is disposed in the housing, the second mounting plate is electrically connected to the guide plate, and the guide plate is electrically connected to the power supply negative electrode.

7. The electric cooking range of claim 6, wherein the guide plate and the second mounting plate are connected by bolts, the first mounting plate and the second mounting plate are connected by bolts, and a mica plate is provided between the first mounting plate and the second mounting plate.

8. An electric cooking stove according to claim 7, wherein a tab terminal is also penetratingly connected to the bolt connecting the guide plate and the second mounting plate, said tab terminal being located below the guide plate, said tab terminal being electrically connected to the power supply negative electrode.

9. An electric cooking stove as claimed in claim 1, characterized in that the second mounting plate is connected with a rim in an insulating manner, the rim being arranged around the second mounting plate.

10. An electric cooking stove as claimed in claim 1, characterized in that the second mounting plate is also provided with a ground connection.