Electric oven with electric leakage protection function

Abstract

The utility model discloses an electric oven with earth leakage protection, which comprises an oven body and an electric heating unit arranged in a heating cavity of the oven body, the oven body comprises a shell and a lining, the lining is arranged on the shell, the lining is concave inwards to form the heating cavity, the shell and / or the lining are / is connected with a conducting strip, the conducting strip is connected with a grounding wire, and the grounding wire is connected with the electric heating unit. The grounding wire extends out of the furnace body and contacts with the ground. The furnace body is connected with the ground through the conducting strip, and leaked current is directly led into the ground, so that the use safety of a user is ensured, and the risk of electric shock is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric oven technical field, concretely relates to an electric oven with leakage protection. BACKGROUND

[0002] The existing electric oven can be used outdoors, and it must pass the waterproof certification. Therefore, the heating unit of the electric oven is usually fixed on the oven body and cannot be detached. That is, one end of the heating unit extends into the oven body through the fixing hole of the oven body to be connected to electricity, and the other end of the heating unit is exposed in the oven body. The fixed arrangement of the heating unit avoids the entry of water from the fixing hole into the oven body, which causes the moisture in the oven body to exist the risk of breakdown and electric leakage. However, there is a risk of electric leakage when used outdoors, especially in humid weather or rainy days. SUMMARY

[0003] The utility model aims at providing an electric oven with leakage protection, which reduces the risk of electric shock after electric leakage.

[0004] The utility model is achieved as follows.

[0005] An electric oven with leakage protection includes an oven body and an electric heating unit arranged in a heating cavity of the oven body. The oven body includes an outer shell and an inner liner. The inner liner is mounted on the outer shell. The inner liner is concave to form the heating cavity. The outer shell and / or the inner liner is connected with a conductive sheet. The conductive sheet is connected with a grounding wire. The grounding wire extends out of the oven body to contact the ground.

[0006] The utility model connects the oven body and the ground through the conductive sheet, and directly leads the leaked current into the ground, thereby ensuring the safety of users and reducing the risk of electric shock.

[0007] Further, the outer shell is provided with a fixing column. One end of the conductive sheet is fixed on the fixing column. The other end of the conductive sheet has an elastic force for moving upward. The elastic force makes the other end of the conductive sheet abut against and contact the bottom of the inner liner.

[0008] The outer shell and the conductive sheet are both in contact with the conductive sheet, especially the elastic contact between the conductive sheet and the inner liner, which avoids the situation that the conductive sheet cannot contact the inner liner due to the assembly gap between the outer shell and the inner liner. The conductive sheet does not need to be connected with the inner liner by welding or other methods, which makes the shape and appearance of the inner liner more beautiful.

[0009] Further, the bottom of the outer shell is provided with a clearance hole. One end of the grounding wire is in conductive connection with the conductive sheet. The other end of the grounding wire extends out of the oven body from the clearance hole.

[0010] The grounding wire is easy to route.

[0011] Further, the outer shell is provided with a surrounding wall around the fixing column. The surrounding wall extends to the clearance hole. The surrounding wall is provided with a gap corresponding to the clearance hole. The grounding wire is arranged in the surrounding wall and enters the clearance hole through the gap.

[0012] The grounding wire is not easy to be tangled.

[0013] Further, the shell is formed by metal casting, and the inner liner is formed by stainless steel stamping.

[0014] Further, an electric coupler is arranged between the shell and the inner liner, the inner liner is provided with a mounting hole, the electric coupler is provided with a conductive jack towards the mounting hole, the electric terminal of the electric heating unit is in the form of a pin, the electric terminal of the electric heating unit is inserted into the conductive jack through the mounting hole, and the conductive jack and the electric terminal of the electric heating unit are connected in conduction.

[0015] The electric heating unit and the electric coupler in the furnace body are designed in plug-pull type and can be detached, so that the electric heating unit can be taken out to clean the heating cavity, the heating cavity is not easy to have dead corners, and the electric heating unit is not electrified after being separated from the electric coupler, so that the electric heating unit is easy and safe to clean, and there is no risk of electric leakage due to plug-pull of the electric heating unit and the electric coupler.

[0016] The electric heating unit and the electric coupler in the furnace body are designed in plug-pull type and can be detached, so that the electric heating unit can be taken out to clean the heating cavity, the heating cavity is not easy to have dead corners, and the electric heating unit is not electrified after being separated from the electric coupler, so that the electric heating unit is easy and safe to clean, and there is no risk of electric leakage due to plug-pull of the electric heating unit and the electric coupler. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the embodiment one.

[0018] Figure 2 It is an exploded structural schematic view of the embodiment one.

[0019] Figure 3 It is a sectional structural schematic view of the embodiment one.

[0020] Figure 4 It is Figure 3 It is an enlarged schematic view of A part in the embodiment one.

[0021] Figure 5 It is Figure 3 It is an enlarged schematic view of B part in the embodiment one.

[0022] Figure 6 It is a structural schematic view of the electric coupler and the electric heating unit in the embodiment one.

[0023] Figure 7 It is a local structural schematic view of the electric coupler and the electric heating unit after installation in the embodiment one. DETAILED DESCRIPTION

[0024] The utility model will be further described in combination with the drawings and embodiments.

[0025] Embodiment one, see Figures 1-7 As shown in the figure, an electric oven with leakage protection, comprising an oven body 1 and an electric heating unit 2 and a fastening device 8 arranged in the heating cavity 10 of the oven body 1. The oven body comprises an outer shell 11 and an inner liner 12, the inner liner 12 is installed on the outer shell 11, the inner liner 12 is concave to form the heating cavity 10, and an electric coupler 3 is installed in the inner cavity of the oven body formed between the outer shell 11 and the inner liner 12. The electric heating unit 2 and the oven body 1 are detachably connected and fixed by the fastening device 8. Preferably, the outer shell is cast iron cast, and the inner liner is stainless steel punched.

[0026] The oven body 1 is provided with a mounting hole 13, and the electric coupler 3 is provided with a conductive jack facing the mounting hole 13. A guide sleeve 4 is arranged in the mounting hole 13, and the guide sleeve 4 is in the shape of a bell mouth, that is, the outer edge 41 of the guide sleeve 4 is larger in diameter than the inner edge 42, the inner edge 42 of the guide sleeve 4 is inserted into the mounting hole, and the outer edge 41 of the guide sleeve 4 is arranged outside the mounting hole 13.

[0027] The outer shell 11 is provided with a fixed column 15 and a surrounding wall 17, and the bottom of the outer shell 11 is provided with a clearance hole 16 communicating with the inner cavity of the oven body, the surrounding wall 17 is arranged around the fixed column 15, the surrounding wall 17 extends to the clearance hole 16, and the surrounding wall is provided with a notch 18 corresponding to the clearance hole 16. One end of the conductive sheet 14 is fastened to the fixed column 15 by a screw, and the other end of the conductive sheet 14 has an upward moving elastic force, which makes the other end of the conductive sheet 14 abut and contact the bottom of the inner liner 12. In this way, the conductive sheet 14 does not need to be welded with the inner liner 12, which causes the inner liner 12 to have welding marks and affects the appearance. The surrounding wall 17 is provided with a grounding wire (not shown in the figure), the conductive sheet 14 is conductively connected with one end of the grounding wire, the other end of the grounding wire enters the clearance hole 16 through the notch 18, and extends out of the oven body 1 to contact the ground. If the outer shell 11 and the inner liner 12 have a leakage, the current is led to the ground along the conductive sheet 14 and the grounding wire, thereby reducing the risk of electric shock.

[0028] The electric coupler 3 comprises an insulating box body 5 and a live wire coupling connecting sheet 31, a zero line coupling connecting sheet 32 and a spring ring 33 arranged in the insulating box body 5. The insulating box body 5 comprises a front seat 51 and a rear cover 52, the front seat 51 is provided with a fixing hole 53, the live wire coupling connecting sheet 31 and the zero line coupling connecting sheet 32 and the corresponding elastic clamping sheet are inserted into the corresponding fixing hole 53, and the fixing hole 53 is aligned with the mounting hole 13 in front of the front seat 51. After the front seat 51 and the rear cover 52 are connected, the front seat 51 limits the live wire coupling connecting sheet 31 and the zero line coupling connecting sheet 32 in the fixing hole 53.

[0029] The live wire coupling connecting piece 31 is used for connecting the live wire, the zero line coupling connecting piece 32 is used for connecting the zero line, the live wire coupling connecting piece 31 and the zero line coupling connecting piece 32 are the same structure, the live wire coupling connecting piece 31 and the zero line coupling connecting piece 32 all include a fixed sleeve 6, the fixed sleeve 6 extends three elastic clamping pieces 61 in front, the elastic clamping pieces 61 are annularly arranged around the axis of the fixed sleeve 6, and the elastic clamping pieces 61 form the conductive jack therebetween. The elastic ring 33 clamps all the outer ends of the elastic clamping pieces 61.

[0030] In the embodiment, the two groups of live wire coupling connecting pieces 31 and zero line coupling connecting pieces 32 are respectively connected in parallel, and the live wire coupling connecting piece 31 and the zero line coupling connecting piece 32 are installed in the insulation box 5 in a staggered manner, and the live wire coupling connecting piece 31 and the zero line coupling connecting piece 32 are provided with an electrical gap meeting the safety distance. The roots of the parallel live wire coupling connecting pieces 31 are connected with the first lead 34 extending out of the insulation box 5, and the roots of the parallel zero line coupling connecting pieces 32 are connected with the second lead 35 extending out of the insulation box 5.

[0031] The electric heating unit 2 includes two groups of heating pipes 21, and the heating pipes 21 have guide columns 22 at the ends, which constitute the power connection end of the electric heating unit 2, that is, the power connection end of the electric heating unit 2 is in the form of a pin.

[0032] The power connection end of the electric heating unit 2 is inserted into the corresponding conductive jack through the guide sleeve 4 on the mounting hole 13, and the elastic ring 33 makes the power connection end of the electric heating unit 2 and the elastic clamping piece 61 in close contact, and the conductive jack and the power connection end of the electric heating unit 2 are connected in a conductive manner. The electric coupler 3 supplies power to the electric heating unit 2.

[0033] The power connection end of the electric heating unit 2 is provided with a fixing frame 7, the fixing frame 7 is provided with a positioning hole 71, and the guide column 22 of the electric heating unit 2 is arranged in the positioning hole 71. The outer edge 41 of the guide sleeve 4 is larger in diameter than the diameter of the positioning hole 71, the fixing frame 7 is open toward the side and the bottom surface of the guide sleeve 4, and the fixing frame 7 covers the guide sleeve 4. The cooperation of the fixing frame 7 and the guide sleeve 4 improves the waterproof performance of the mounting hole 13.

[0034] The fixing frame 7 supports the electric heating unit 2, the fixing frame 7 is open toward the side and the bottom surface of the guide sleeve 4, and the fixing frame 7 covers the guide sleeve 4. The cooperation of the fixing frame 7 and the guide sleeve 4 prevents water from directly entering the inner cavity of the furnace body 1 from the horn mouth of the guide sleeve 4. The fixing frame 7 supports the electric heating unit 2 to be suspended in the heating cavity 10.

[0035] The fastening device 8 comprises a first connecting hole 81 arranged on the fixing frame 7, a second connecting hole 82 arranged on the inner liner 12, a first fastening screw 83, the fixing sheet 9 and a second fastening screw 84. The first fastening screw 83 passes through the first connecting hole 81 and the second connecting hole 82, and detachably connects and fixes the inner liner 12 and the fixing frame 7. The fixing sheet 9 is arranged with a third connecting hole 91, and the bottom of the inner liner 12 is arranged with a fourth connecting hole 85. The fixing sheet 9 is bent with a clamping opening part 92 in an inverted U shape, the clamping opening part 92 clamps the heating pipe 21, the first fastening screw 83 passes through the third connecting hole 91 and the fourth connecting hole 85, and detachably connects and fixes the fixing sheet 9 and the inner liner 12, and the clamping opening part 92 leaves a gap between the heating pipe 21 and the inner liner 12 in the height direction. Among them, the second connecting hole 82 and the first fastening screw 83 are threadedly connected, and the second fastening screw 84 and the fourth connecting hole 85 are threadedly connected. Alternatively, the second connecting hole 82 and the fourth connecting hole 85 are arranged with nuts, and the first fastening screw 83 and the second fastening screw 84 are threadedly connected with the corresponding nuts. The first fastening screw 83 realizes axial fastening of the electric heating unit 2, and the second fastening screw 84 realizes radial fastening of the electric heating unit 2. After the user unscrews the first fastening screw 83 and the second fastening screw 84, the electric coupler 3 and the electric heating unit 2 can be freely plugged and connected.

[0036] As used in the present application, the terms: first, second, etc. do not denote any order, quantity or importance, but are only used for differentiation.

[0037] As used in the present application, the terms: one, an, etc. do not denote a quantity limitation, but denote the existence of at least one mentioned object.

[0038] As used in the present application, the terms indicating direction or position: front end, rear end, top, bottom, side, longitudinal, transverse, middle, center, outer, inner, horizontal, vertical, left, right, upward, downward, etc. mean reflecting relative position, not absolute position.

[0039] As used in the present application, the terms: substantially, integrally, approximately, similarly, etc. are used as a limiting term to indicate the existence of a feature but allow a certain deviation. The amount of deviation allowed can vary depending on the specific context.

Claims

1. An electric oven having a leakage protection, comprising an oven body and an electric heating unit provided in a heating cavity of the oven body, characterized in that, The furnace body comprises an outer shell and an inner lining, the inner lining is installed on the outer shell, the inner lining is concave to form the heating cavity, the outer shell and / or the inner lining is connected with an electrically conductive sheet, the electrically conductive sheet is connected with a grounding wire, the grounding wire extends out of the furnace body to contact the ground.

2. The electric oven with electric leakage protection according to claim 1, characterized in that the housing The fixed column is arranged inside, one end of the electrically conductive sheet is fixed on the fixed column, the other end of the electrically conductive sheet has an elastic force for moving upward, and the elastic force makes the other end of the electrically conductive sheet abut against the bottom of the inner lining.

3. The electric oven with electric leakage protection according to claim 2, characterized in that, The outer shell is provided with a clearance hole, one end of the grounding wire is in conductive connection with the electrically conductive sheet, and the other end of the grounding wire extends out of the furnace body from the clearance hole.

4. The electric oven with electric leakage protection according to claim 3, characterized in that, The outer shell is provided with a surrounding wall around the fixed column, the surrounding wall extends to the clearance hole, the surrounding wall is provided with a gap corresponding to the clearance hole, and the grounding wire is arranged in the surrounding wall and enters the clearance hole through the gap.

5. The electric oven with electric leakage protection according to any one of claims 1-4, characterized in that, The outer shell is formed by metal casting, and the inner lining is formed by stainless steel stamping.

6. The electric oven with electric leakage protection according to claim 1, characterized in that, The outer shell and the inner lining are provided with an electric coupler, the inner lining is provided with a mounting hole, the electric coupler is provided with a conductive jack facing the mounting hole, the power connection end of the electric heating unit is in the form of a pin, the power connection end of the electric heating unit is inserted into the conductive jack through the mounting hole, and the conductive jack and the power connection end of the electric heating unit are connected in conduction.

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