Segmented heating type electric heating tube

Abstract

The utility model discloses a segmented heating type electric heating tube, which belongs to the technical field of electric heating tubes and comprises a heating tube, stainless steel joints are arranged at two ends of the heating tube, and five silver paste electrodes and three heating areas are arranged on the outer wall of the heating tube. The three heating areas comprise a first heating area, a second heating area and a third heating area which are sequentially arranged from top to bottom, the upper end of the first heating area and the lower end of the second heating area are each provided with a silver paste electrode, the first heating area and the second heating area share one silver paste electrode, and the upper end and the lower end of the third heating area are each provided with a silver paste electrode. The electric heating tube is provided with five silver paste electrodes and three heating areas and can be directly used under the voltage of 380V, so that the product cost can be greatly reduced, and the use reliability of the product is improved; the heating device can still be used under the voltage of 220 V, sectional heating can be controlled, and power can be adjusted according to actual requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heating tubes, in particular to a segmented heating type electric heating tube. Background Art

[0002] Since the instant heating tube can instantly heat water or other liquids to the required temperature, the amount of hot water output is not limited by time, and the heating function does not need to be turned on when not in use. It has the advantages of high thermal efficiency and fast heating speed. Therefore, it is widely used in household appliances such as instant water dispensers, instant electric water heaters, boilers and other fields.

[0003] At present, a single electric heating tube can basically only be used at 220V voltage. For heating equipment with higher power requirements, 380V voltage is often required to increase the power of the heating equipment. In this case, three electric heating tubes (or multiples of 3) are required for circuit connection to be used at 380V voltage. This will not only increase the cost of the tubes to a certain extent, but also increase the number of connectors between the tubes, thereby increasing the risk of water leakage in the entire heating system. Utility Model Content

[0004] The purpose of the utility model is to provide a segmented heating electric heating tube, which solves the problem in the prior art that multiple electric heating tubes need to be connected together to be used under a voltage of 380V, which increases the cost and the number of connectors between the tubes, thereby increasing the risk of water leakage in the entire heating system.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The utility model discloses a segmented heating electric heating tube, comprising a heating tube, stainless steel joints are arranged at both ends of the heating tube, five silver paste electrodes and three heating zones are arranged on the outer wall of the heating tube, the three heating zones include a first heating zone, a second heating zone and a third heating zone arranged in sequence from top to bottom, one silver paste electrode is respectively arranged at the upper end of the first heating zone and the lower end of the second heating zone, one silver paste electrode is shared between the first heating zone and the second heating zone, and one silver paste electrode is respectively arranged at the upper and lower ends of the third heating zone.

[0007] Furthermore, a heating film is provided on the outer wall of the heating tube at a position corresponding to the heating area.

[0008] Furthermore, one end of the stainless steel joint is arranged at the end of the heating tube, and the other end of the stainless steel joint is provided with a bolt fixing part. The fixing bolt is inserted from the bolt fixing part at the top, penetrates the heating tube, and then extends to the bottom of the bolt fixing part at the bottom and is locked in place by a fixing nut.

[0009] Furthermore, a silicone sealing sleeve is provided between the stainless steel joint and the heating tube.

[0010] Furthermore, one end of the stainless steel joint is provided with a first mounting groove matching the heating tube, and the other end of the stainless steel joint is provided with a second mounting groove matching the bolt fixing member, and a through hole is provided between the first mounting groove and the second mounting groove.

[0011] Furthermore, the inner diameter of the through hole is larger than the outer diameter of the fixing bolt.

[0012] Furthermore, an external thread structure is provided on the outer wall of the stainless steel joint.

[0013] Furthermore, a fixing seat is provided on the outer wall of the stainless steel joint, and a fixing threaded hole is provided on the fixing seat.

[0014] Furthermore, a mounting hole matching the fixing bolt is arranged at the center of the bolt fixing member, and a plurality of columnar structures are arranged around the bolt fixing member.

[0015] Compared with the prior art, the beneficial technical effects of the utility model are:

[0016] The electric heating tube described in the utility model has five silver paste electrodes and three heating zones, and can be used directly under a 380V voltage, which can greatly reduce product costs and improve product reliability. The utility model can still be used under a 220V voltage, and can realize segmented heating control and power adjustment according to actual requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model will be further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the segmented heating electric heating tube of the utility model;

[0019] Figure 2 This is a positional relationship diagram of five silver paste electrodes and three heating zones of the utility model;

[0020] Figure 3 It is a cross-sectional view of the utility model of the segmented heating electric heating tube;

[0021] Figure 4 It is a three-dimensional structural schematic diagram of the end of the segmented heating electric heating tube of the utility model;

[0022] Figure 5 It is a cross-sectional view of the stainless steel joint of the utility model;

[0023] Figure 6It is a three-dimensional structural schematic diagram of the stainless steel joint of the utility model;

[0024] Figure 7 It is a three-dimensional structural schematic diagram of the bolt fixing member of the utility model;

[0025] Figure 8 This is a circuit connection diagram of the utility model of segmented heating electric heating tube used under 380V voltage.

[0026] Explanation of the accompanying drawings: 1. Heating tube; 2. Silver paste electrode; 3. Heating zone; 3-1. First heating zone; 3-2. Second heating zone; 3-3. Third heating zone; 3-4. Heating film; 4. Stainless steel joint; 4-1. External thread structure; 4-2. Fixing seat; 4-2-1. Fixed threaded hole; 4-3. First mounting groove; 4-4. Second mounting groove; 4-5. Through hole; 5. Bolt fixing; 5-1. Mounting hole; 5-2. Columnar structure; 6. Fixing bolt; 7. Fixing nut; 8. Silicone sealing sleeve. DETAILED DESCRIPTION

[0027] like Figure 1-8 As shown, a segmented heating electric heating tube comprises a heating tube 1, stainless steel joints 4 are provided at both ends of the heating tube 1, five silver paste electrodes 2 and three heating zones 3 are provided on the outer wall of the heating tube 1, the three heating zones 3 comprise a first heating zone 3-1, a second heating zone 3-2 and a third heating zone 3-3 which are arranged in sequence from top to bottom, a silver paste electrode 2 is provided at the upper end of the first heating zone 3-1 and a silver paste electrode 2 is provided at the lower end of the second heating zone 3-2, a silver paste electrode 2 is shared between the first heating zone 3-1 and the second heating zone 3-2, a silver paste electrode 2 is provided at the upper and lower ends of the third heating zone 3-3, and the silver paste electrode at the bottom of the second heating zone 3-2 and the silver paste electrode at the top of the third heating zone 3-3 are disconnected.

[0028] A heating film 3 - 4 is arranged on the outer wall of the heating tube 1 at a position corresponding to the heating area 3 .

[0029] like Figure 3 As shown, one end of the stainless steel joint 4 is sleeved on the end of the heating tube 1, and the other end of the stainless steel joint 4 is installed with a bolt fixing part 5. The fixing bolt 6 is inserted from the bolt fixing part 5 at the top and penetrates the heating tube 1, then extends to the bottom of the bolt fixing part 5 at the bottom and is locked in place by a fixing nut 7.

[0030] like Figure 3 As shown, a silicone sealing sleeve 8 is installed between the stainless steel joint 4 and the heating tube 1, and the silicone sealing sleeve is used to achieve sealing between the heating tube and the stainless steel joint.

[0031] like Figure 5 As shown, one end of the stainless steel joint 4 is provided with a first mounting groove 4-3 matching the heating tube 1, and the other end of the stainless steel joint 4 is provided with a second mounting groove 4-4 matching the bolt fixing member 5, and a through hole 4-5 is connected between the first mounting groove 4-3 and the second mounting groove 4-4; the inner diameter of the through hole 4-5 is larger than the outer diameter of the fixing bolt 6, thereby ensuring that water flows out through the through hole 4-5.

[0032] like Figure 6 The outer wall of the stainless steel joint 4 is provided with an external thread structure 4-1 for sealing and connecting with external pipe fittings; the outer wall of the stainless steel joint 4 is also connected to a fixing seat 4-2, and the fixing seat 4-2 is provided with a fixing threaded hole 4-2-1 for connecting to the inner wall of a thermal electric water heater or a household / industrial electric boiler.

[0033] like Figure 7 As shown, a mounting hole 5-1 matching the fixing bolt 6 is provided at the center of the bolt fixing member 5, and four columnar structures 5-2 are connected around the bolt fixing member 5, and the gap between each columnar structure can ensure the circulation of water.

[0034] like Figure 8 The figure shows the circuit connection diagram of the utility model used under 380V voltage; the electric heating tube described in the utility model can still be used under 220V voltage, and the segmented heating can be controlled and the power can be adjusted according to actual requirements.

[0035] The use process of the utility model is as follows:

[0036] Under 380V voltage, using a live wire and a neutral wire will turn it into 220V voltage. One of the three sections is connected to the neutral wire, and the other end of the heating tube is connected to the 380V A, B, and C phases, so that the heating tube can be used at 380V. Under 220V voltage, you only need to connect the three live wires to the 220V live wire end, or control the three sections of the heating tube separately through relays to achieve different power control.

[0037] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A segmented heating electric heating tube, characterized in that: The invention comprises a heating tube (1), wherein both ends of the heating tube (1) are provided with stainless steel joints (4), and the outer wall of the heating tube (1) is provided with five silver paste electrodes (2) and three heating zones (3), wherein the three heating zones (3) comprise a first heating zone (3-1), a second heating zone (3-2) and a third heating zone (3-3) which are arranged in sequence from top to bottom, wherein the upper end of the first heating zone (3-1) and the lower end of the second heating zone (3-2) are each provided with one silver paste electrode (2), the first heating zone (3-1) and the second heating zone (3-2) share one silver paste electrode (2), and the upper and lower ends of the third heating zone (3-3) are each provided with one silver paste electrode (2).

2. The segmented heating electric heating tube according to claim 1 is characterized in that: A heating film (3-4) is provided on the outer wall of the heating tube (1) at a position corresponding to the heating area (3).

3. The segmented heating electric heating tube according to claim 1 is characterized in that: One end of the stainless steel joint (4) is arranged at the end of the heating tube (1), and the other end of the stainless steel joint (4) is provided with a bolt fixing part (5). A fixing bolt (6) is inserted from the bolt fixing part (5) at the top, penetrates through the heating tube (1), and then extends to below the bolt fixing part (5) at the bottom and is locked in place by a fixing nut (7).

4. The segmented heating electric heating tube according to claim 3 is characterized in that: A silicone sealing sleeve (8) is provided between the stainless steel joint (4) and the heating tube (1).

5. The segmented heating electric heating tube according to claim 3 is characterized in that: One end of the stainless steel joint (4) is provided with a first mounting groove (4-3) matching the heating tube (1), and the other end of the stainless steel joint (4) is provided with a second mounting groove (4-4) matching the bolt fixing member (5), and a through hole (4-5) is provided between the first mounting groove (4-3) and the second mounting groove (4-4).

6. The segmented heating electric heating tube according to claim 5 is characterized in that: The inner diameter of the through hole (4-5) is greater than the outer diameter of the fixing bolt (6).

7. The segmented heating electric heating tube according to claim 5, characterized in that: An external thread structure (4-1) is provided on the outer wall of the stainless steel joint (4).

8. The segmented heating electric heating tube according to claim 5, characterized in that: A fixing seat (4-2) is also provided on the outer wall of the stainless steel joint (4), and a fixing threaded hole (4-2-1) is provided on the fixing seat (4-2).

9. The segmented heating electric heating tube according to claim 3 is characterized in that: A mounting hole (5-1) matching the fixing bolt (6) is arranged at the center of the bolt fixing member (5), and a plurality of columnar structures (5-2) are arranged around the bolt fixing member (5).

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