Combined electric heater

Abstract

The utility model relates to the technical field of heaters, in particular to a combined electric heater, which comprises an aluminum tube assembly and an electric heating tube assembly. A first hollow aluminum pipe, a second hollow aluminum pipe and a third hollow aluminum pipe are formed on the aluminum pipe assembly, and the first hollow aluminum pipe and the third hollow aluminum pipe are symmetrically arranged on the two sides of the second hollow aluminum pipe. A plurality of heat conduction fins are evenly arranged on the inner wall of the second hollow aluminum pipe at intervals, and electric heating pipe assemblies are fixed in the first hollow aluminum pipe and the third hollow aluminum pipe respectively. The combined electric heater is formed by assembling the two electric heating tube assemblies and the aluminum tube assembly in a matched mode, assembling is convenient, and when the combined electric heater is used, the combined electric heater has two working modes, one working mode is that the combined electric heater is directly placed in water and makes direct contact with the water to heat the water; according to the other mode, the water pipe is arranged in the second hollow aluminum pipe in a penetrating mode to heat water in the water pipe, the using requirements of two working modes can be met, and using is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of heaters, in particular to a combined electric heater. Background Art

[0002] An electric heating tube is a device that converts electrical energy into thermal energy. When current passes through the electric heating tube, the electrical energy is converted into thermal energy, thereby heating the water.

[0003] The existing electric heating tubes have a single shape, which is cylindrical. When the electric heating tubes are used, there are two heating modes, one is to heat the water by directly contacting the electric heating tube with water, and the other is to heat the water in the water pipe by contacting the electric heating tube with the outer surface of the water pipe. Due to the single shape, the contact area between the electric heating tube and water is limited, resulting in low thermal conductivity of the electric heating tube, which makes the electric heating tube take a long time to heat the water, affecting the heating efficiency of the electric heating tube.

[0004] The Chinese utility model patent with patent announcement number CN220669800U discloses a water heater electric heating tube, including an electric heating tube shell, on which a heat conduction mechanism is provided, the heat conduction mechanism includes a silicone seal fixedly installed at both ends of the electric heating tube shell, a heating wire located in the electric heating tube shell is fixedly installed between the surfaces of the two silicone seals on opposite sides, the electric heating tube shell is filled with an insulating heat conduction layer, and a heat conduction fin is fixedly installed on the outer surface of the electric heating tube shell. The prior art can increase the heat conduction area of ​​the electric heating tube by providing heat conduction fins on the surface of the electric heating tube, thereby facilitating the improvement of the heating efficiency of the electric heating tube for water and shortening the heating time for water. However, the outer surface of the electric heating tube of the prior art is provided with a plurality of heat conduction fins in a ring shape, and the structure is complex. When a plurality of electric heating tubes are used in combination, it is difficult to assemble them together; and when the plurality of heat conduction fins are limited, it is only suitable for heating water by direct contact with water, but cannot be used for heating water in the water pipe by contacting with the outer surface of the water pipe, and cannot meet the use requirements of two heating modes at the same time.

[0005] Therefore, there is still room for improvement and development in the existing technology. Utility Model Content

[0006] In view of the problems of the prior art, the utility model provides a combined electric heater, which is formed by assembling two electric heating tube assemblies and an aluminum tube assembly. The combined electric heater is easy to assemble and has two working modes when in use. One is to put the combined electric heater directly into water and heat the water in direct contact with the water. The contact area with the water is large and the heating efficiency is high. The other is to pass the water pipe into the second hollow aluminum tube to heat the water in the water pipe. The electric heating tube assemblies are fixed in the first hollow aluminum tube and the third hollow aluminum tube symmetrically arranged on both sides of the second hollow aluminum tube. The heating efficiency is high, the use requirements of the two working modes can be met, and the use is more convenient.

[0007] In order to achieve the above purpose, the technical solution applied by the utility model is as follows:

[0008] A combined electric heater comprises an aluminum tube assembly and an electric heating tube assembly; a first hollow aluminum tube, a second hollow aluminum tube and a third hollow aluminum tube are formed on the aluminum tube assembly, and the first hollow aluminum tube and the third hollow aluminum tube are symmetrically arranged on both sides of the second hollow aluminum tube; a plurality of heat-conducting fins are evenly spaced on the inner wall of the second hollow aluminum tube, and the electric heating tube assemblies are respectively fixed in the first hollow aluminum tube and the third hollow aluminum tube.

[0009] According to the above solution, the plurality of heat-conducting fins are arranged in a ring shape on the inner wall of the second hollow aluminum tube, and holes for accommodating water pipes are formed between the ends of the plurality of heat-conducting fins.

[0010] According to the above solution, the centers of the first hollow aluminum tube, the second hollow aluminum tube and the third hollow aluminum tube are on the same straight line.

[0011] According to the above scheme, the electric heating tube assembly includes a plug 1, a hollow outer tube, an insulating heat-conductive layer 1, a hollow inner tube, an electric heating wire, an insulating heat-conductive layer 2, a plug 2, a lead rod, a wire and a ring terminal; the electric heating wire is fixed in the hollow inner tube, and the hollow inner tube is filled with the insulating heat-conductive layer 2, the insulating heat-conductive layer 2 is coated on the outside of the electric heating wire, and the two end openings of the hollow inner tube are respectively provided with a plug 1; the hollow outer tube is sleeved on the outside of the hollow inner tube, and the hollow outer tube is filled with the insulating heat-conductive layer 1, the insulating heat-conductive layer 1 is coated on the outside of the hollow inner tube, and the two end openings of the hollow outer tube are respectively provided with a plug 2; lead rods are fixed at both ends of the electric heating wire, and after the lead rods at both ends pass through the plug 1 and the plug 2 in turn, they are electrically connected to the first end of the wire, and the second end of the wire is electrically connected to the ring terminal.

[0012] According to the above solution, the connection between the first end of the wire and the lead rod and the connection between the second end of the wire and the ring terminal are both covered with insulating sleeves.

[0013] Beneficial effects of the utility model:

[0014] The utility model is arranged in such a way that a combined electric heater is formed by assembling two electric heating tube assemblies and an aluminum tube assembly. The assembly is convenient and the utility model has two working modes when in use. One is to directly put the combined electric heater into water to heat the water in direct contact with the water, and the contact area with the water is large and the heating efficiency is high. The other is to insert the water pipe into the second hollow aluminum tube, and the electric heating tube assemblies are fixed in the first hollow aluminum tube and the third hollow aluminum tube symmetrically arranged on both sides of the second hollow aluminum tube. The heating efficiency is high, the use requirements of the two working modes can be met, and the use is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 yes Figure 1 Sectional view at the middle AA position;

[0017] Figure 3 yes Figure 1 Enlarged view of position B in the middle;

[0018] Figure 4 It is a schematic diagram of the electric heating tube assembly of the utility model.

[0019] In the figure:

[0020] 1. Aluminum tube assembly; 11. First hollow aluminum tube; 12. Second hollow aluminum tube; 13. Third hollow aluminum tube; 14. Thermal fin; 2. Electric heating tube assembly; 20. Plug one; 21. Hollow outer tube; 22. Insulating thermal conductive layer one; 23. Hollow inner tube; 24. Heating wire; 25. Insulating thermal conductive layer two; 26. Plug two; 27. Lead rod; 28. Power cord; 29. ​​Ring terminal; 210. Insulating sleeve. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is described below in conjunction with the accompanying drawings and embodiments.

[0022] like Figures 1 to 4 As shown, the combined electric heater described in the utility model comprises an aluminum tube assembly 1 and an electric heating tube assembly 2; the aluminum tube assembly 1 is formed with a first hollow aluminum tube 11, a second hollow aluminum tube 12 and a third hollow aluminum tube 13, and the first hollow aluminum tube 11 and the third hollow aluminum tube 13 are symmetrically arranged on both sides of the second hollow aluminum tube 12; a plurality of heat-conducting fins 14 are evenly spaced on the inner wall of the second hollow aluminum tube 12, and the electric heating tube assembly 2 is fixed in the first hollow aluminum tube 11 and the third hollow aluminum tube 13 respectively. In this way, a combined electric heater is formed by assembling two electric heating tube assemblies 2 with the aluminum tube assembly 1. The combined electric heater is easy to assemble and has two working modes when in use. One is to directly put the combined electric heater into water to heat the water in direct contact with the water. The contact area with the water is large and the heating efficiency is high. The other is to pass the water pipe through the second hollow aluminum tube 12 to heat the water in the water pipe. The electric heating tube assemblies 2 are fixed in the first hollow aluminum tube 11 and the third hollow aluminum tube 13 symmetrically arranged on both sides of the second hollow aluminum tube 12. The heating efficiency is high, which can meet the use requirements of the two working modes and is more convenient to use.

[0023] More specifically, the plurality of heat-conducting fins 14 are arranged in an annular shape on the inner wall of the second hollow aluminum tube 12, and holes for accommodating water pipes are formed between the ends of the plurality of heat-conducting fins 14. In this way, the heat conduction is more uniform and stable, and the water pipes are easy to assemble.

[0024] More specifically, the centers of the first hollow aluminum tube 11, the second hollow aluminum tube 12 and the third hollow aluminum tube 13 are on the same straight line. In this way, the overall installation space is small.

[0025] In this embodiment, the electric heating tube assembly 2 includes a plug 20, a hollow outer tube 21, an insulating heat-conducting layer 22, a hollow inner tube 23, a heating wire 24, an insulating heat-conducting layer 25, a plug 26, a lead rod 27, a wire 28 and a ring terminal 29; the heating wire 24 is fixed in the hollow inner tube 23, and the hollow inner tube 23 is filled with an insulating heat-conducting layer 25, and the insulating heat-conducting layer 25 is coated on the outside of the heating wire 24, and the two ends of the hollow inner tube 23 are respectively provided with plugs. The hollow outer tube 21 is sleeved on the outside of the hollow inner tube 23, and the hollow outer tube 21 is filled with an insulating heat-conducting layer 22, which covers the outside of the hollow inner tube 23. The two end openings of the hollow outer tube 21 are respectively provided with plugs 26; the two ends of the electric heating wire 24 are respectively fixed with lead rods 27, and the lead rods 27 at both ends pass through the plug 20 and the plug 26 in turn, and are electrically connected to the first end of the wire 28, and the second end of the wire 28 is electrically connected to the ring terminal 29. In this way, when it is working, the external power supply is connected through the ring terminal 29, and the electric heating wire 24 is made conductive through the lead rod 27. When the current passes through the electric heating wire 24, the electrical energy will be converted into heat energy, and the heat energy will heat the water after passing through the insulating heat-conducting layer 25 and the insulating heat-conducting layer 1 22. It has a compact structure, is easy to assemble, and has a good heat conduction effect.

[0026] More specifically, the connection between the first end of the wire 28 and the lead rod 27 and the connection between the second end of the wire 28 and the ring terminal 29 are both covered with an insulating sleeve 210. This arrangement can protect the connection.

[0027] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which belong to the protection scope of the present invention.

Claims

1. A combined electric heater, characterized in that: Including aluminum tube assembly and electric heating tube assembly; The aluminum tube assembly is formed with a first hollow aluminum tube, a second hollow aluminum tube and a third hollow aluminum tube, wherein the first hollow aluminum tube and the third hollow aluminum tube are symmetrically arranged on both sides of the second hollow aluminum tube; A plurality of heat-conducting fins are evenly spaced on the inner wall of the second hollow aluminum tube, and electric heating tube assemblies are respectively fixed in the first hollow aluminum tube and the third hollow aluminum tube.

2. A combined electric heater according to claim 1, characterized in that: The plurality of heat-conducting fins are arranged in a ring shape on the inner wall of the second hollow aluminum tube, and holes for accommodating water pipes are formed between the ends of the plurality of heat-conducting fins.

3. A combined electric heater according to claim 1, characterized in that: The centers of the first hollow aluminum tube, the second hollow aluminum tube and the third hollow aluminum tube are on the same straight line.

4. A combined electric heater according to claim 1, characterized in that: The electric heating tube assembly includes a plug 1, a hollow outer tube, an insulating heat-conducting layer 1, a hollow inner tube, an electric heating wire, an insulating heat-conducting layer 2, a plug 2, a lead rod, a wire and a ring terminal; the electric heating wire is fixed in the hollow inner tube, and the hollow inner tube is filled with the insulating heat-conducting layer 2, the insulating heat-conducting layer 2 is coated on the outside of the electric heating wire, and the two end openings of the hollow inner tube are respectively provided with a plug 1; the hollow outer tube is sleeved on the outside of the hollow inner tube, and the hollow outer tube is filled with the insulating heat-conducting layer 1, the insulating heat-conducting layer 1 is coated on the outside of the hollow inner tube, and the two end openings of the hollow outer tube are respectively provided with a plug 2; lead rods are fixed at both ends of the electric heating wire, and the lead rods at both ends pass through the plug 1 and the plug 2 in turn, and are electrically connected to the first end of the wire, and the second end of the wire is electrically connected to the ring terminal.

5. A combined electric heater according to claim 4, characterized in that: The connection between the first end of the wire and the lead rod and the connection between the second end of the wire and the ring terminal are both covered with insulating sleeves.

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