CN115721174A - Electric oven - Google Patents

Abstract

The invention discloses an electric oven, which comprises an oven body and at least one heating pipe, wherein the heating pipe comprises a pipe body, a heating wire arranged in the pipe body, two insulating plugs for respectively plugging two ends of the pipe body, and two first electrodes respectively embedded into the two insulating plugs, two ends of the heating wire are respectively electrically connected with the two first electrodes, the pipe body is a quartz pipe, the heating wire is a carbon fiber wire, and the pipe body is filled with inert gas; the inner wall of the box body is provided with a clamping groove matched with the end part of the heating pipe, a second electrode is arranged at the position, close to the clamping groove, of the inner wall of the box body, and the end part of the heating pipe is clamped into the clamping groove, so that the first electrode is in contact with the second electrode. The structural design of the electric oven can effectively shorten the preheating time, and the heating pipe of the electric oven can be detached for cleaning.

Description

Electric oven

Technical Field

The invention relates to the technical field of household appliances, in particular to an electric oven.

Background

The electric oven in the prior art has low temperature rise speed, needs about ten minutes of preheating time when being started, needs seven minutes when reaching the fastest temperature of 120 ℃, and can not effectively achieve the effect of keeping moisture on the surface of baked food, namely crisp outside and tender inside due to low infrared heating coefficient of the cooked food.

Moreover, the heating pipe of the existing electric oven can not be detached and can only be cleaned in the oven. When the heating pipe is cleaned, water and a cleaning solvent are sprayed into the oven, the solvent residue and sewage are generated after cleaning, and the pollution is caused by direct discharge. The problem that breeding bacteria can be caused by residual water stains in the oven and long-term nonuse of the oven can be solved, if the oven after cleaning is dried, the system structure is more complex, the cleaning steps are complex, and the required time is longer.

Disclosure of Invention

In view of the above, an object of the present invention is to provide an electric oven, which has a structural design to effectively shorten the preheating time, and a heating pipe of the electric oven can be detachably cleaned.

In order to achieve the purpose, the invention provides the following technical scheme:

an electric oven comprises an oven body and at least one heating pipe, wherein the heating pipe comprises a pipe body, a heating wire arranged in the pipe body, two insulating plugs for respectively plugging two ends of the pipe body, and two first electrodes respectively embedded into the two insulating plugs, two ends of the heating wire are respectively electrically connected with the two first electrodes, the pipe body is a quartz pipe, the heating wire is a carbon fiber wire, and the pipe body is filled with inert gas;

the inner wall of box have with the tip complex draw-in groove of heating pipe, just the inner wall of box is close to the position of draw-in groove is provided with the second electrode, the tip card of heating pipe is gone into first electrode and second electrode contact behind the draw-in groove.

Preferably, in the electric oven, the heating wire is spiral.

Preferably, in the electric oven, the heating pipe is a straight pipe, and two ends of the heating pipe are respectively clamped in the clamping grooves of the two opposite side walls of the oven body.

Preferably, in the electric oven, the heating pipe is a bent pipe.

Preferably, in the electric oven, the heating pipe is disposed on the top side and the bottom side of the box body and/or on the inner side of the side wall opposite to the door body of the electric oven.

Preferably, in the electric oven, the second electrode is an elastic metal sheet.

Preferably, in the electric oven, the inner wall of the oven body is fixedly connected with a clamping piece, and the clamping groove is formed in the clamping piece;

the inner wall of the clamping groove is a cambered surface.

Preferably, in the electric oven, two ends of the heating wire are electrically connected to a lead, and the lead passes through the insulating plug and is electrically connected to the first electrode.

Preferably, in the electric oven, one of the insulating plug and the inner wall of the oven body is fixedly connected with an annular electromagnet, the other of the insulating plug and the inner wall of the oven body is fixedly connected with an annular magnet, the end of the heating tube is clamped in the clamping groove, then the annular electromagnet and the annular magnet are opposite and contact, and the annular electromagnet generates magnetic force after the first electrode and the second electrode are electrified.

Preferably, in the electric oven, the annular electromagnet is embedded in the inner wall of the oven body, and the annular magnet is embedded in the insulating plug.

The invention provides an electric oven which comprises an oven body and at least one heating pipe. Wherein, the number of the heating pipes can be one or more.

The heating pipe includes a pipe body, a heater strip, two insulating end caps and two first electrodes. The tube body is a quartz tube, namely the tube body is made of quartz. The heater strip is carbon fiber, and the material of heater strip is carbon fiber promptly. The tube body is filled with inert gas.

The heater strip sets up in the pipe originally internally, and the heater strip is located inside the pipe body promptly, and the heater strip circular telegram back temperature risees, and the heater strip temperature is in the pipe body and is gived off to the box in. Two ends of the pipe body are respectively plugged by two insulating plugs. It should be noted that, after the insulating plug plugs the end of the pipe body, the insulating plug and the pipe body are relatively fixed. Specifically, the insulating plug and the pipe body may be in an interference fit or bonded, and are not limited herein.

The two first electrodes are respectively embedded into the two insulating plugs, namely the insulating plugs are provided with grooves for accommodating the first electrodes, so that the first electrodes are embedded into the grooves of the insulating plugs. In addition, the first electrode is flush with the end face of the insulating plug. Two ends of the heating wire are respectively electrically connected with the two first electrodes.

The inner wall of the box body is provided with a clamping groove matched with the end part of the heating pipe, and a second electrode is arranged on the position, close to the clamping groove, of the inner wall of the box body. The end part of the heating pipe is clamped into the clamping groove, and then the first electrode is contacted with the second electrode. Specifically, the tip of heating pipe stretches into in the draw-in groove and is supported by the draw-in groove inner wall, and after the draw-in groove was gone into to the heating pipe card, the first electrode of heating pipe tip was relative and contact in order to realize the electricity between first electrode and the second electrode with the second electrode on the box inner wall and be connected, and then realized that the heater strip can realize the electricity with the outer second electrode of pipe body and be connected, through second electrode and first electrode give the heater strip circular telegram can.

The electrothermal conversion efficiency of the carbon fiber material is up to more than 95%, and the heating wire in the application adopts the carbon fiber wire to greatly shorten the preheating time and the cooking time, thereby improving the user experience. In addition, the tube body adopts a quartz tube, the quartz infrared transmission performance is excellent, the carbon fiber heating wire is arranged in the quartz tube, the two ends of the tube are encapsulated and then filled with inert gas, and the purpose of filling the inert gas is to improve the reliability, maximally resist high temperature and prolong the service life.

In addition, after the heating pipe is used for a long time, oil stains on the surface of the heating pipe are accumulated thickly, so that the radiation capability of the heating pipe is reduced, and the heat transfer resistance is increased, so that the heating pipe needs to be cleaned in time. In this application, the electric oven outage back takes out the tip of heating pipe from the draw-in groove, can realize the dismantlement of heating pipe, take out after the heating pipe is dismantled wash can, avoided wasing the heating pipe in-process, remain the problem that the bacterium bred easily in the solvent in the box.

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 drawings without creative efforts.

Fig. 1 is a schematic structural view of an electric oven according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a heating tube according to an embodiment of the present invention;

FIG. 3 is an enlarged view of area A of FIG. 2;

FIG. 4 is a schematic connection diagram of a heating pipe according to an embodiment of the present invention;

FIG. 5 is an enlarged view of area B in FIG. 4;

FIG. 6 is a schematic view of the inner wall of the case, the second electrode and the ring magnet according to an embodiment of the present invention;

fig. 7 is a schematic view of an end portion of a heating pipe being clamped into a clamping groove according to an embodiment of the present invention;

fig. 8 is a schematic structural view of an electric oven according to another embodiment of the present invention.

In fig. 1-8:

the device comprises a box body 1, a box body 1a, a heating pipe 2, a pipe body 2a, a heating wire 2b, an insulating plug 2c, a first electrode 2d, a ring-shaped electromagnet 2e, a lead 2f, a baking tray 3, a guide rail 4, a baking rack 5, a fan 6, a ring-shaped magnet 7, a second electrode 8 and a clamping piece 9.

Detailed Description

The invention aims to provide an electric oven, which has a structural design that the preheating time can be effectively shortened, and a heating pipe of the electric oven can be detachably cleaned.

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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left" and "right", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the positions or elements referred to must have specific orientations, be constructed in specific orientations, and be operated, and thus are not to be construed as limitations of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 to 8, the present invention provides an electric oven including a cabinet 1 and at least one heating duct 2. Wherein, the number of the heating pipes 2 can be one or more.

The heating tube 2 includes a tube body 2a, a heating wire 2b, two insulating plugs 2c, and two first electrodes 2d. The tube body 2a is a quartz tube, that is, the material of the tube body 2a is quartz. The heating wire 2b is a carbon fiber wire, that is, the material of the heating wire 2b is carbon fiber. The tube body 2a is filled with an inert gas.

Heater strip 2b sets up in being managed body 2a, and heater strip 2b is located inside being managed body 2a promptly, and heater strip 2b circular telegram back temperature rise, and heater strip 2b temperature is managed body 2a and is gived off to the box 1 in. The two insulating plugs 2c respectively plug the two ends of the pipe body 2 a. It should be noted that, after the insulating plug 2c plugs the end of the pipe body 2a, the insulating plug 2c and the pipe body 2a are fixed relatively. Specifically, the insulating plug 2c and the tube body 2a may be in an interference fit or bonded, and are not limited herein.

The two first electrodes 2d are respectively embedded into the two insulating plugs 2c, that is, the insulating plugs 2c are provided with grooves for accommodating the first electrodes 2d, so that the first electrodes 2d are embedded into the grooves of the insulating plugs 2 c. In addition, the first electrode 2d is flush with the end face of the insulating plug 2 c. Both end portions of the heater wire 2b are electrically connected to the two first electrodes 2d, respectively.

The inner wall of the box body 1 is provided with a clamping groove matched with the end part of the heating pipe 2, and a second electrode 8 is arranged at a position, close to the clamping groove, of the inner wall 1a of the box body. After the end of the heating tube 2 is clamped into the clamping groove, the first electrode 2d is in contact with the second electrode 8. Specifically, the tip of heating pipe 2 stretches into in the draw-in groove and is supported by the draw-in groove inner wall, behind the draw-in groove was gone into to heating pipe 2 card, the first electrode 2d of heating pipe 2 tip was relative and contact in order to realize the electricity between first electrode 2d and the second electrode 8 with the second electrode 8 on box inner wall 1a, and then realized that heater strip 2b can realize the electricity with the outer second electrode 8 of pipe body 2a and be connected, through second electrode 8 and first electrode 2d give heater strip 2b circular telegram can.

The applicant continuously tests to obtain that the electric heat conversion efficiency of the carbon fiber material is up to more than 95%, the heat conductivity coefficient of the carbon fiber material in the fiber direction is 1.6 times that of pure copper and 2.7 times that of aluminum, so that the heating wire 2b made of the carbon fiber material is rapid in temperature rise and small in thermal lag; the energy emission mode of the carbon fiber material is mainly far infrared radiation, wherein the far infrared radiation efficiency reaches more than 70%. The material of the heating wire 2b is carbon fiber, so that the technical requirement of rapid heating can be met. The carbon fiber comprises carbon as a main component, and the principle of utilizing the carbon fiber to be electrified and heated is as follows: after carbon atoms in carbon fibers are excited by electrons in current, the electrons in the carbon atoms form an excited state to generate energy level jump, vibration with the wavelength of 4-20 micrometers occurs, the vibration of the electrons generates heat, and the heat is transmitted in the form of electromagnetic waves through heat radiation.

Known from the above, carbon fiber material's electric heat conversion efficiency reaches more than 95%, and heating wire 2b adopts the carbon fiber silk can shorten preheating time and culinary art time greatly in this application, improves user experience. In addition, the tube body 2a is a quartz tube which is excellent in infrared transmission performance, the carbon fiber heating wires 2b are arranged in the quartz tube, inert gas is filled into the two ends of the tube after the two ends of the tube are packaged, and the purpose of filling the inert gas is to improve reliability, maximum high temperature resistance and prolong service life.

In addition, after the heating pipe 2 is used for a long time, oil stains on the surface of the heating pipe 2 are accumulated too thickly, so that the radiation capability of the heating pipe is reduced, and the heat transfer resistance is increased, so that the heating pipe needs to be cleaned in time. In this application, the electric oven outage back takes out the tip of heating pipe 2 from the draw-in groove, can realize the dismantlement of heating pipe 2, take out after the dismantlement of heating pipe 2 wash can, avoided wasing 2 in-process of heating pipe, remain the problem that the bacterium breeds easily in the solvent in the box 1.

In a particular embodiment, the heating wire 2b may be a helical wire, i.e. the heating wire 2b extends along a helical line. So, increased heater strip 2 b's heat transfer area, further shortened the culinary art time. Of course, the heating wire 2b may also be straight or have other curved shapes, and is not limited herein.

Optionally, the heating pipe 2 is a straight pipe, and two ends of the heating pipe 2 are respectively clamped in the clamping grooves of the two opposite side walls of the box body 1. The axis of the heating pipe 2 extends along a straight line, and two ends of the heating pipe 2 are fixed on two opposite side walls of the box body 1.

The heating pipe 2 may be a bent pipe, and as shown in fig. 8, the heating pipe 2 may be a continuous S-shape, or the heating pipe 2 may be a coil pipe, which is not limited herein.

In the above embodiment, the heating duct 2 is disposed on the top side, the bottom side and/or the inner side of the side wall opposite to the door of the electric oven inside the cabinet 1. Specifically, the heating pipe 2 may be disposed at the top side in the box 1, the heating pipe 2 may be disposed at the bottom side in the box 1, and the heating pipe 2 may also be disposed at the inner side of the side wall opposite to the door body of the electric oven.

It should be noted that, when the heating pipe 2 is a bent pipe and the heating pipe 2 is located at the top side in the box body 1, the top wall of the box body 1 may be provided with a hook or the like for supporting the heating pipe 2. When the heating pipe 2 is a bent pipe and the heating pipe 2 is positioned inside the side wall opposite to the door body of the electric oven in the box body 1, the inner side of the rear side wall of the box body 1 can be provided with a bulge for supporting the heating pipe 2, so that the situations that the heating pipe 2 falls off and the like can be prevented.

In order to increase the cooking uniformity, the heating pipe 2 may be arranged in a plurality of pieces. Besides the two side surfaces are connected and assembled with the heating pipe 2, the two ends of the heating pipe 2 can be communicated and electrified on the rear wall surface, or fixed on one or more wall surfaces in other directions. Fig. 8 illustrates that the heating pipes 2 adopt a coil pipe structure, the rear wall surface is electrified, the coil pipe can increase the baking uniformity, and compared with the arrangement of a plurality of heating pipes 2, the coil pipe structure only needs one-time vacuum pumping and filling, does not need a plurality of electrode interfaces, and simplifies the structure; the positive and negative electrodes of the coil are positioned on the same side, so that the structure and the installation are simplified; and the second electrode 8 is positioned on the rear wall surface of the oven, so that the power supply can be conveniently connected.

In order to ensure that the first electrode 2d and the second electrode 8 are in close contact, so as to make the first electrode 2d and the second electrode 8 electrically connected stably, the second electrode 8 may be an elastic metal sheet. As shown in fig. 7, the elastic metal sheet may be a metal bent sheet, and the first electrode 2d and the second electrode 8 are ensured to be in close contact by the resilience force of the bending. Of course, the first electrode 2d may be an elastic metal sheet, and the second electrode 8 may be a common inelastic electrode, which is not limited herein.

In order to facilitate the arrangement of the clamping groove, the clamping piece 9 is fixedly connected to the inner wall of the box body 1, and the clamping groove is formed in the clamping piece 9. The clamping piece 9 and the inner wall 1a of the box body can be in screw connection, clamping connection or welding connection, so that the processing and the manufacturing are more convenient. Of course, the clamping groove can also be directly formed on the inner wall 1a of the box body. And is not limited herein.

The inner wall of the clamping groove can be a cambered surface, namely the clamping groove is arched, and the notch of the clamping groove faces the top of the box body 1. Of course, the slot may also be square, which is not limited herein.

In another embodiment, to facilitate electrical connection, both ends of the heating wire 2b are electrically connected to a lead wire 2f, and the lead wire 2f is electrically connected to the first electrode 2d through the insulating plug 2 c. That is, one end of the lead wire 2f is electrically connected to the heating wire 2b, and the other end of the lead wire 2f is electrically connected to the first electrode 2d, so that the electrical connection between the heating wire 2b and the first electrode 2d is accomplished. The insulating plug 2c is provided with a through hole for the lead wire 2f to pass through, and the first electrode 2d plugs the through hole for the lead wire 2f of the insulating plug 2c to pass through, so that the heating wire 2b and the lead wire 2f can be completely packaged in the heating tube 2. The heating tube 2 is communicated with an external power supply through the exposed surface of the first electrode 2d, so that no electric wire is arranged outside the heating tube 2, and the structure is simplified.

In the above embodiment, the carbon fiber heating wires 2b are arranged in the middle section of the quartz tube through the lead wires 2f, and a certain distance is left between two ends of the carbon fiber heating wires 2b and two ends of the tube body 2 a.

As shown in fig. 3 to 6, one of the insulating plug 2c and the inner wall 1a of the box body is fixedly connected with a ring-shaped electromagnet 2e, and the other of the insulating plug 2c and the inner wall 1a of the box body is fixedly connected with a ring-shaped magnet 7. After the end part of the heating pipe 2 is clamped in the clamping groove, the annular electromagnet 2e is opposite to and in contact with the annular magnet 7, and the annular electromagnet 2e generates magnetic force after the first electrode 2d and the second electrode 8 are electrified. Specifically, the insulating plug 2c is fixedly connected with an annular electromagnet 2e, the inner wall 1a of the box body is fixedly connected with an annular magnet 7, the annular electromagnet 2e surrounds the first electrode 2d, and the annular magnet 7 surrounds the second electrode 8. Or, the inner wall 1a of the box body is fixedly connected with an annular electromagnet 2e, the insulating plug 2c is fixedly connected with an annular magnet 7, the annular electromagnet 2e surrounds the second electrode 8, and the annular magnet 7 surrounds the first electrode 2d. Further, the ring-shaped electromagnet 2e and the ring-shaped magnet 7 are not in contact with the first electrode 2d and the second electrode 8.

After the first electrode 2d and the second electrode 8 are electrified, the annular electromagnet 2e generates magnetism, and the annular magnet 7 can be attracted by magnetic force, so that the end part of the heating pipe 2 is attracted to the inner wall 1a of the oven body, and the heating pipe 2 is connected to the oven. When the first electrode 2d and the second electrode 8 are electrified, the magnetic force ensures that the heating pipe 2 cannot be taken down by bare hands, so that the heating pipe 2 is prevented from being taken down by the oven in the electrifying process to cause electric shock hazard. After the first electrode 2d and the second electrode 8 are powered off, the magnetism of the annular electromagnet 2e disappears, and the annular electromagnet 2e is only attracted by the small magnetic force of the annular magnet 7 so as to connect the heating pipe 2 with the oven, so that the heating pipe 2 can be taken down by bare hands with appropriate force, and the heating pipe 2 is convenient to clean.

In one embodiment, the annular electromagnet 2e is embedded in the inner wall 1a of the box body, and the annular magnet 7 is embedded in the insulating plug 2 c. Therefore, the flatness of the end surface of the heating pipe 2 is ensured, and the first electrode 2d is more convenient to contact with the second electrode 8 and the annular magnet 7 is more convenient to contact with the annular electromagnet 2 e.

In addition, the electric oven provided by the application also comprises a guide rail 4 connected with the inner wall of the box body, and a baking tray 3 and a baking rack 5 which are in sliding fit with the guide rail 4. The interior of the box body can be also provided with a fan 6 to promote the air circulation in the box body and ensure that the temperature in the box body 1 is more uniform.

In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims (10)

1. The electric oven is characterized by comprising an oven body (1) and at least one heating pipe (2), wherein the heating pipe (2) comprises a pipe body (2 a), a heating wire (2 b) arranged in the pipe body (2 a), two insulating plugs (2 c) for respectively plugging two ends of the pipe body (2 a) and two first electrodes (2 d) embedded into the two insulating plugs (2 c), two ends of the heating wire (2 b) are electrically connected with the two first electrodes (2 d) respectively, the pipe body (2 a) is a quartz pipe, the heating wire (2 b) is a carbon fiber wire, and the pipe body (2 a) is filled with inert gas;

the inner wall of box (1) have with the tip complex draw-in groove of heating pipe (2), just the inner wall of box (1) is close to the position of draw-in groove is provided with second electrode (8), the tip card of heating pipe (2) is gone into first electrode (2 d) and second electrode (8) contact behind the draw-in groove.

2. The electric oven according to claim 1, characterized in that the heating wire (2 b) is helical.

3. The electric oven according to claim 1, characterized in that the heating tube (2) is a straight tube, and two ends of the heating tube (2) are respectively clamped in the clamping grooves of two opposite side walls of the box body (1).

4. The electric oven according to claim 1, characterized in that the heating duct (2) is a bent duct.

5. The electric oven according to claim 3 or 4, characterized in that the heating duct (2) is provided inside the cabinet (1) on the top side, the bottom side and/or inside the side wall opposite to the door of the electric oven.

6. The electric oven according to claim 1, characterized in that the second electrode (8) is a resilient metal sheet.

7. The electric oven according to claim 1, characterized in that a latch (9) is fixedly connected to the inner wall of the box (1), said latch opening into said latch (9);

the inner wall of the clamping groove is a cambered surface.

8. The electric oven according to claim 1, characterized in that both ends of the heating wire (2 b) are electrically connected with a lead wire (2 f), and the lead wire (2 f) is electrically connected with the first electrode (2 d) through the insulating plug (2 c).

9. The electric oven according to claim 1, characterized in that one of the insulating plug (2 c) and the inner wall (1 a) of the box body is fixedly connected with a ring-shaped electromagnet (2 e), the other one of the insulating plug (2 c) and the inner wall (1 a) of the box body is fixedly connected with a ring-shaped magnet (7), the ring-shaped electromagnet (2 e) and the ring-shaped magnet (7) are opposite and contacted after the end of the heating tube (2) is clamped in the clamping groove, and the ring-shaped electromagnet (2 e) generates magnetic force after the first electrode (2 d) and the second electrode (8) are electrified.

10. The electric oven according to claim 9, characterized in that said annular electromagnet (2 e) is embedded in said inner wall (1 a) of the box and said annular magnet (7) is embedded in said insulating plug (2 c).

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