Novel graphene electric heating stove

Abstract

The utility model discloses a novel graphene electric heating stove, including the furnace shell, the inner chamber of furnace shell is fixedly installed with hot -water cylinder through the connecting block, both sides of hot -water cylinder all are fixedly installed with the sealing plate, the middle part fixed mounting of hot -water cylinder has the baffle, a plurality of graphene heating rods are detachably connected through the connecting assembly on the sealing plate. The utility model discloses through the descaling agent circulation system formed by first conveying assembly and second conveying assembly, can realize all -round descaling to graphene heating rod and hot -water cylinder inner wall, need not to dismantle heating rod to complete descaling, compared with traditional dismounting type cleaning, greatly reduce the labor intensity of operator, simultaneously, still need not to interrupt normal heating in daytime, solved the heating interruption problem caused by traditional cleaning.

Description

Technical Field

[0001] This utility model relates to the field of electric heating furnace technology, specifically a novel graphene electric heating furnace. Background Technology

[0002] Electric heating boilers, also known as electric heating furnaces, are heating devices that convert electrical energy into heat energy, either directly releasing heat or circulating it through heating pipes via a heat transfer medium to meet heating needs. With the widespread application of graphene materials in the field of heat conduction, graphene electric heating boilers have been widely promoted due to their high thermal conductivity. Their core structure typically involves coating the heating element with a graphene layer, utilizing graphene's excellent thermal conductivity to improve heating efficiency.

[0003] Existing graphene electric heating boilers have several technical drawbacks: First, the graphene layer is in direct contact with water, and the water in the stainless steel hot water tank is prone to scale buildup after repeated heating. Scale buildup on the surface of the graphene layer significantly reduces its thermal conductivity and affects heating efficiency. Second, in traditional structures, the graphene layer is fixedly connected to the heating element and cannot be disassembled separately. After scale buildup, the entire heating element needs to be replaced, which greatly increases the cost of use and maintenance. While the existing patent CN218587348U discloses a graphene electric heater that can solve the above problems, it requires complete disassembly of the heating components, making the process cumbersome. This not only increases the labor intensity of operators but also causes wear and tear on the sealing structure due to frequent disassembly, leading to the risk of leakage. Therefore, a novel graphene electric heater is designed. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A novel graphene electric heating furnace includes a furnace shell, a hot water cylinder fixedly installed in the inner cavity of the furnace shell via a connecting block, sealing plates fixedly installed on both sides of the hot water cylinder, a partition plate fixedly installed in the middle of the hot water cylinder, and several graphene heating rods detachably connected to the sealing plates via a connecting assembly. Both sides of the top of the hot water tank are fixedly installed with liquid inlet pipes. One end of the liquid inlet pipe is fixedly connected to a water inlet pipe with a valve and a first pipe through a three-way connector. One end of the first pipe is connected to a first conveying component so as to convey the liquid mixed with descaling agent into the hot water tank. Both sides of the bottom of the hot water tank are fixedly installed with drain pipes. One end of the drain pipe is fixedly connected to a drain pipe with a valve and a third pipe through a three-way connector. One end of the third pipe is connected to a second conveying component so as to discharge the liquid mixed with descaling agent out of the hot water tank.

[0005] Preferably, the first conveying component includes: The first water pump is fixedly installed on both sides of the top of the inner cavity of the furnace shell, and the liquid outlet of the first water pump is fixedly connected to the first pipeline. The second pipe is fixedly installed on the inlet end of the first water pump; A storage tank is fixedly installed on the top of the furnace shell, and one end of the second pipe is fixedly installed on the side wall of the storage tank. The inner cavity of the storage tank is filled with a liquid mixed with a descaling agent.

[0006] Preferably, the second conveying component includes: The second water pump is fixedly installed on both sides of the bottom of the inner cavity of the furnace shell, and the liquid inlet of the second water pump is fixedly connected to the third pipe. The fourth pipe is fixedly installed on the outlet end of the second water pump.

[0007] Preferably, the connection component includes: Mounting plate, which is fixedly mounted on the end of the graphene heating rod; Square grooves: Several square grooves are provided on the side of the sealing plate; A number of blocks are fixedly installed on one side of the mounting plate, and the blocks are inserted into the square grooves.

[0008] Preferably, the connection component further includes: The first groove is provided on the sealing plate located on both sides of the square groove; A guide groove is provided on the sealing plate located on one side of the first slide groove; The second groove is provided on the sealing plate located outside the first groove.

[0009] Preferably, the connection component further includes: A positioning rod, which is slidably connected in a first groove; The block has positioning slots on both sides, and one end of the positioning rod is inserted into the positioning slot.

[0010] Preferably, the connection component further includes: A drive rod is fixedly mounted on the side of the positioning rod and slidably connected in the second groove. A guide rod is fixedly installed on the other end of the positioning rod, and the guide rod is slidably connected in the guide groove.

[0011] Preferably, the connection component further includes: A damping spring is sleeved on a guide rod, and both ends of the damping spring are fixedly connected to the first slide groove and the positioning rod, respectively. The guide groove has several rubber sheets on its inner surface, and one end of the guide rod can be inserted between the rubber sheets.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes a descaling agent circulation system formed by the first and second conveying components to achieve comprehensive descaling of the graphene heating rod and the inner wall of the hot water tank. Descaling can be completed without disassembling the heating rod, significantly reducing the labor intensity of operators compared to traditional disassembly cleaning. At the same time, it does not require interruption of normal daytime heating, solving the problem of heating interruption caused by traditional cleaning. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle; Figure 3 This is a schematic diagram showing the arrangement of the hot water tank and graphene heating rod of this utility model; Figure 4 This is a front view schematic diagram of the furnace shell structure of this utility model.

[0014] In the diagram: furnace shell 10, hot water cylinder 20, sealing plate 21, partition 22, graphene heating rod 30, mounting plate 40, square groove 41, block 42, first slide groove 43, guide groove 44, second slide groove 45, positioning rod 46, positioning groove 47, drive rod 48, guide rod 49, damping spring 491, rubber sheet 492, liquid inlet pipe 50, water inlet pipe 51, first water pump 52, first pipeline 53, second pipeline 54, storage tank 55, drain pipe 56, drain pipe 57, second water pump 58, third pipeline 59, fourth pipeline 591. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0016] This utility model provides a novel graphene electric heating stove. Please refer to [link / reference]. Figures 1-4The system includes a furnace shell 10, with a hot water cylinder 20 fixedly installed inside the furnace shell 10 via a connecting block. Sealing plates 21 are fixedly installed on both sides of the hot water cylinder 20, and a partition plate 22 is fixedly installed in the middle of the hot water cylinder 20. Several graphene heating rods 30 are detachably connected to the sealing plates 21 via connecting components. Sealing rings can be installed at the connection points between the sealing plates 21 and the graphene heating rods 30 as needed. The hot water cylinder 20 is made of food-grade 316 stainless steel, which has better corrosion resistance than 304 stainless steel, making it particularly suitable for long-term storage of hot water and contact with descaling agents, ensuring the safety of the heating water quality and preventing the precipitation of metal ions that pollute the water. The heating element substrate of the graphene heating rod 30 is made of copper, which has a high thermal conductivity. High heat transfer efficiency (401 W / (m·K)) allows for rapid heat transfer from the graphene coating. The graphene coating is prepared using chemical vapor deposition with a thickness controlled between 5-8 μm. It bonds firmly to the copper substrate and shows no peeling after 5000 cycles of thermal cycling. Its thermal conductivity is more than 30% higher than that of traditional stainless steel heating rods. The sealing plate 21 is made of a composite material of polytetrafluoroethylene and glass fiber. This material is resistant to high temperatures (long-term operating temperature ≤260℃) and chemical corrosion. It effectively isolates hot water from the inner cavity of the furnace shell 10 and has excellent sealing performance. Tests showed no leakage under 1.0 MPa pressure. Various grooves on the surface are precision milled with dimensional tolerances controlled within ±0.05 mm to ensure the fit accuracy with the connecting components.

[0017] Both sides of the top of the hot water tank 20 are fixedly installed with liquid inlet pipes 50. One end of the liquid inlet pipe 50 is fixedly connected to the water inlet pipe 51 with a valve and the first pipe 53 through a three-way connector. One end of the first pipe 53 is connected to the first conveying component so as to convey the liquid mixed with descaling agent into the hot water tank 20. Both sides of the bottom of the hot water tank 20 are fixedly installed with drain pipes 56. One end of the drain pipe 56 is fixedly connected to a drain pipe 57 with a valve and a third pipe 59 through a three-way connector. One end of the third pipe 59 is connected to a second conveying component so as to discharge the liquid mixed with descaling agent out of the hot water tank 20.

[0018] The first delivery assembly includes: a first water pump 52, a second pipeline 54, and a storage tank 55; The first water pump 52 is fixedly installed on both sides of the top of the inner cavity of the furnace shell 10, and the liquid outlet of the first water pump 52 is fixedly connected to the first pipe 53. The second pipe 54 is fixedly installed on the liquid inlet of the first water pump 52. The storage tank 55 is fixedly installed on the top of the furnace shell 10, and one end of the second pipe 54 is fixedly installed on the side wall of the storage tank 55. The inner cavity of the storage tank 55 is filled with liquid mixed with descaling agent.

[0019] The second delivery assembly includes: a second water pump 58 and a fourth pipeline 591; The second water pump 58 is fixedly installed on both sides of the bottom of the inner cavity of the furnace shell 10, and the inlet end of the second water pump 58 is fixedly connected to the third pipe 59. The fourth pipe 591 is fixedly installed on the outlet end of the second water pump 58.

[0020] The connecting components include: mounting plate 40, square groove 41, block 42, first slide groove 43, guide groove 44, second slide groove 45, positioning rod 46, positioning groove 47, drive rod 48, guide rod 49, damping spring 491, and rubber sheet 492. The mounting plate 40 is fixedly mounted on the end of the graphene heating rod 30. The mounting plate 40 is made of thermally conductive material. Several square grooves 41 are formed on the side of the sealing plate 21. Several square blocks 42 are fixedly mounted on one side of the mounting plate 40, and the square blocks 42 are inserted into the square grooves 41. First sliding grooves 43 are formed on the sealing plate 21 on both sides of the square grooves 41. A guide groove 44 is formed on the sealing plate 21 on one side of the first sliding groove 43. A second sliding groove 45 is formed on the sealing plate 21 outside the first sliding groove 43. The positioning rod 46 is slidably connected in the first sliding groove 43. Positioning grooves 47 are formed on both sides of the square blocks 42, and one end of the positioning rod 46 is inserted into the positioning groove 47. The driving rod 48 is fixedly mounted on the side of the positioning rod 46, and the driving rod 48 is slidably connected in the second sliding groove 45. The guide rod 49 is fixedly mounted on the side of the positioning rod 46. The guide rod 49 is slidably connected to the guide groove 44 and is fixedly installed on the other end of the positioning rod 46. The damping spring 491 is sleeved on the guide rod 49, and the two ends of the damping spring 491 are fixedly connected to the first sliding groove 43 and the positioning rod 46 respectively. The inner surface of the guide groove 44 is provided with several rubber sheets 492, and one end of the guide rod 49 can be inserted between several rubber sheets 492. When one end of the guide rod 49 is inserted between several rubber sheets 492, the friction between the guide rod 49 and the rubber sheets 492 is greater than the elastic force of the damping spring 491. The damping spring 491 is made of 60Si2Mn spring steel, which has good elastic limit and fatigue strength. After 10,000 expansion and contraction tests, the elastic deformation rate is ≤5%, which can maintain the preload on the positioning rod 46 for a long time. The surface is galvanized and passivated to improve rust prevention and adapt to the humid environment inside the furnace.

[0021] I. Installation and Disassembly Process of Graphene Heating Rod 1. Installation process: Step 1: Clean the square groove 41, the first sliding groove 43 and the guide groove 44 on the sealing plate 21 to ensure that there are no impurities remaining; check the mounting plate 40 and the square block 42 at the end of the graphene heating rod 30 to confirm that there is no deformation or damage. Step 2: The operator pushes the drive rod 48 outward along the second slide groove 45 with their finger. The drive rod 48 drives the positioning rod 46 to slide along the first slide groove 43. The positioning rod 46 compresses the damping spring 491, and at the same time the guide rod 49 moves with the positioning rod 46. Continue to push the drive rod 48 until the positioning rod 46 is completely retracted into the first slide groove 43. At this time, one end of the guide rod 49 is inserted between several rubber sheets 492. Step 3: Align the block 42 on the mounting plate 40 with the square groove 41 on the sealing plate 21, and slowly insert it until the mounting plate 40 is in contact with the surface of the sealing plate 21; at this time, the positioning grooves 47 on both sides of the block 42 and the first sliding groove 43 are in the same position. Step 4: Slowly release the drive rod 48, the damping spring 491 returns to its original deformation and pushes the positioning rod 46 to slide inward along the first slide groove 43, and the end of the positioning rod 46 is inserted into the positioning groove 47 of the block 42; Step 5: Gently pull the graphene heating rod 30 to confirm that it is not loose; observe that the drive rod 48 does not shift within the second slide groove 45, and the installation is complete.

[0022] II. Operation and Working Principle of the Descaling System 1. The descaling agent in storage tank 55 is a compound solution of citric acid (5-8%) and hydroxyethylidene diphosphonic acid (0.5-1%). This formula has a good dissolving effect on scale such as calcium carbonate and magnesium carbonate, and does not corrode graphene coatings and metal parts. The storage tank 55 has a volume of 5L, which can meet the needs of a single descaling. The top of the tank is equipped with a filling port and a level gauge for easy replenishment of descaling agent. 2. At this time, the valve of the inlet pipe 51 is opened, and the valves of the first pipe 53, the drain pipe 57 and the third pipe 59 are closed; cold water enters the hot water tank 20 through the inlet pipe 51 and the liquid inlet pipe 50. The graphene heating rod 30 is powered on and heats up the cold water. The heated hot water is circulated and output through the heating system to achieve the heating function. 3. Descaling mode operation procedure: Step 1: Turn off the power to the electric heater and close the valve of the water inlet pipe 51; open the valve of the drain pipe 57, drain the hot water in the hot water tank 20 completely, and then close the valve of the drain pipe 57. Step 2: Open the valve of the first pipe 53 and start the first water pump 52. The descaling agent in the storage tank 55 is injected into the hot water cylinder 20 through the second pipe 54, the first water pump 52, the first pipe 53 and the inlet pipe 50. Observe the injection volume through the liquid level gauge of the storage tank 55. When the liquid level of the descaling agent covers all the graphene heating rods 30, close the valve of the first water pump 52 and the first pipe 53. Step 3: Keep the descaling agent soaking in the hot water tank 20 for 30-60 minutes, adjusting the time according to the scale thickness. If the scale thickness is >2mm, extend the soaking time to 60 minutes. After soaking, open the valve of the third pipe 59, start the second water pump 58, and simultaneously start the first water pump 52 again to form a descaling agent circulation loop: storage tank 55 → second pipe 54 → first water pump 52 → first pipe 53 → inlet pipe 50 → hot water tank 20 → outlet pipe 56 → third pipe 59 → second water pump 58 → fourth pipe 591. Set the circulation time to 20 minutes to enhance the contact reaction efficiency between the descaling agent and the scale through circulation. Step 4: Close the valves of the first water pump 52 and the first pipe 53, keep the second water pump 58 running, open the valve of the drain pipe 57, and discharge the descaling agent containing scale residue through the drain pipe 56, the third pipe 59, the second water pump 58, and the fourth pipe 591; after the descaling agent is completely discharged, close the valves of the second water pump 58 and the third pipe 59, open the valve of the inlet pipe 51, and inject clean water into the hot water tank 20 until clean water overflows from the drain pipe 57. Close the valve of the drain pipe 57 and soak for 10 minutes; repeat the rinsing 2-3 times until the pH value of the discharged clean water is close to neutral, thus completing the descaling process.

[0023] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A novel graphene electric heating furnace, comprising a furnace shell (10), characterized in that, A hot water cylinder (20) is fixedly installed in the inner cavity of the furnace shell (10) via a connecting block. Sealing plates (21) are fixedly installed on both sides of the hot water cylinder (20). A partition plate (22) is fixedly installed in the middle of the hot water cylinder (20). Several graphene heating rods (30) are detachably connected to the sealing plate (21) via a connecting assembly. Both sides of the top of the hot water tank (20) are fixedly installed with liquid inlet pipes (50). One end of the liquid inlet pipe (50) is fixedly connected to the water inlet pipe (51) with a valve and the first pipe (53) through a three-way connector. One end of the first pipe (53) is connected to the first conveying component so that the liquid mixed with descaling agent can be conveyed to the hot water tank (20). Both sides of the bottom of the hot water tank (20) are fixedly installed with drain pipes (56). One end of the drain pipe (56) is fixedly connected to a drain pipe (57) with a valve and a third pipe (59) through a three-way connector. One end of the third pipe (59) is connected to a second conveying component so that the liquid mixed with descaling agent can be discharged out of the hot water tank (20).

2. The novel graphene electric heating furnace according to claim 1, characterized in that, The first conveying component includes: The first water pump (52) is fixedly installed on both sides of the top of the inner cavity of the furnace shell (10), and the liquid outlet of the first water pump (52) is fixedly connected to the first pipe (53). The second pipe (54) is fixedly installed on the inlet end of the first water pump (52); Storage tank (55) is fixedly installed on the top of furnace shell (10), and one end of the second pipe (54) is fixedly installed on the side wall of storage tank (55). The inner cavity of storage tank (55) is filled with liquid mixed with descaling agent.

3. The novel graphene electric heating furnace according to claim 1, characterized in that, The second conveying assembly includes: The second water pump (58) is fixedly installed on both sides of the bottom of the inner cavity of the furnace shell (10), and the liquid inlet of the second water pump (58) is fixedly connected to the third pipe (59). The fourth pipe (591) is fixedly installed on the outlet end of the second water pump (58).

4. The novel graphene electric heating furnace according to claim 1, characterized in that, The connection component includes: Mounting plate (40), which is fixedly mounted on the end of graphene heating rod (30); Square groove (41): The side of the sealing plate (21) is provided with several square grooves (41). A number of blocks (42) are fixedly installed on one side of the mounting plate (40), and the blocks (42) are inserted into the square groove (41).

5. The novel graphene electric heating furnace according to claim 4, characterized in that, The connection component also includes: The first groove (43) is provided on the sealing plate (21) located on both sides of the square groove (41). Guide groove (44) is provided on the sealing plate (21) located on one side of the first slide groove (43); The second groove (45) is provided on the sealing plate (21) located outside the first groove (43).

6. The novel graphene electric heating furnace according to claim 5, characterized in that, The connection component also includes: Positioning rod (46), which is slidably connected in the first groove (43); Positioning groove (47): Positioning grooves (47) are provided on both sides of the block (42), and one end of the positioning rod (46) is inserted into the positioning groove (47).

7. The novel graphene electric heating furnace according to claim 6, characterized in that, The connection component also includes: A drive rod (48) is fixedly installed on the side of the positioning rod (46) and is slidably connected in the second slide groove (45); The guide rod (49) is fixedly installed on the other end of the positioning rod (46) and is slidably connected in the guide groove (44).

8. The novel graphene electric heating furnace according to claim 7, characterized in that, The connection component also includes: Damping spring (491), the damping spring (491) is sleeved on guide rod (49), and the two ends of the damping spring (491) are fixedly connected to the first slide groove (43) and the positioning rod (46) respectively; Rubber sheet (492), the inner surface of the guide groove (44) is provided with a plurality of rubber sheets (492), and one end of the guide rod (49) can be inserted between the plurality of rubber sheets (492).

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