A self-cleaning spiral flow channel type heat exchanger for natural gas water heaters

Abstract

This utility model discloses a self-cleaning spiral flow channel type heat exchanger for natural gas water heaters, relating to the field of heat exchanger technology. The self-cleaning spiral flow channel type heat exchanger for natural gas water heaters includes a housing with a hollow interior and an open top. Two support frames are fixedly connected inside the housing. Water passage holes are fixedly connected inside the support frames, and copper pipe mounting plates are fixedly connected to the water passage holes. Multiple heating copper pipes are fixedly connected to the copper pipe mounting plates. The heating copper pipes have a spiral structure, and a hollow tank is rotatably connected to the water passage holes. In this self-cleaning spiral flow channel type heat exchanger for natural gas water heaters, the support frames support the copper pipe mounting plates through the water passage holes, ensuring stable installation of the heating copper pipes. The spiral shape of the heating copper pipes increases the contact area with water, improving heat exchange efficiency. The water passage holes allow the hollow tank to rotate, providing a base for the cleaning mechanism. Water flows through the water passage holes into the heating copper pipes, while the rotation of the hollow tank prepares for cleaning.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a self-cleaning spiral flow channel type heat exchanger for natural gas water heaters. Background Technology

[0002] Traditional natural gas water heaters typically use straight or simple bent copper pipe structures for their heat exchangers. The water flow path inside the pipe is short, resulting in limited heat exchange time with the high-temperature flue gas and generally low thermal efficiency. Furthermore, after long-term use, scale easily accumulates on the inner wall of the copper pipe, while oil and dust adhere to the outer wall due to flue gas erosion, leading to a decrease in heat conduction performance. This not only increases energy consumption but may also cause safety hazards due to localized overheating. Moreover, manual cleaning requires disassembling the equipment, which is cumbersome and costly.

[0003] While some water heaters on the market are equipped with simple cleaning devices, they mostly perform one-way cleaning of the outer wall of the copper pipes, making it difficult to reach the scale on the inner wall. Moreover, the cleaning mechanism is mostly fixed, relying on the impact of water flow to remove impurities, resulting in limited cleaning effectiveness. As users' demands for energy saving and convenient maintenance increase, the shortcomings of traditional heat exchangers in terms of heat exchange efficiency and self-cleaning ability are becoming increasingly apparent, failing to meet the requirements of modern families for water heaters that are efficient, durable, and easy to maintain. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a solution that can solve the above-mentioned problem.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a self-cleaning spiral flow channel type natural gas water heater heat exchanger, including a housing, the interior of which is a hollow structure and the top is open, a cover is fixedly connected to the top of the housing, and mounting screws are fixedly connected to the cover, the mounting screws being threadedly connected to the housing.

[0006] The box body is internally connected to two support frames. The support frames are internally connected to water passage holes. The water passage holes are internally connected to copper pipe mounting plates. The copper pipe mounting plates are internally connected to magnetic cleaning devices and heating copper pipes.

[0007] The heating copper tube has a variable diameter spiral structure, and the water passage hole is rotatably connected to a hollow barrel.

[0008] A cleaning mechanism is installed on the inside of the hollow barrel.

[0009] Preferably, the cleaning mechanism includes a fixing member, which is fixedly connected to the inside of the hollow barrel. An inner wall wiping brush is fixedly connected to the fixing member, and an outer wall wiping brush is fixedly connected to the inside of the hollow barrel.

[0010] Preferably, the inner wall wiping brush contacts the inner side of the heating copper tube, and the outer wall wiping brush contacts the outer side of the heating copper tube.

[0011] Preferably, a rotating mechanism is provided at the bottom of the inner part of the box. The rotating mechanism includes a motor, which is fixedly connected to the bottom of the inner part of the box. A rotating shaft is fixedly connected to the output end of the motor. Two small gears are fixedly connected to the rotating shaft, and two large gears are fixedly connected to the outer side of the hollow barrel.

[0012] Preferably, the pinion is meshed with the gear.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) The self-cleaning spiral flow channel type natural gas water heater heat exchanger has two support frames inside the box to provide stable support for the overall structure. The water passage hole inside is not only a water flow channel, but also a fixed connection to the copper pipe mounting plate. The magnetic adsorption cleaning device on the copper pipe mounting plate can adsorb calcium and magnesium ions in the water, reducing impurities entering the heating copper pipe. The variable diameter spiral heating copper pipe extends the water flow path and enhances the heat exchange efficiency. The water passage hole is rotatably connected to the hollow barrel. When the hollow barrel rotates, the cleaning mechanism inside it can clean the heating copper pipe, realizing the coordinated operation of heat exchange, impurity treatment, and cleaning.

[0015] (2) The self-cleaning spiral flow channel type natural gas water heater heat exchanger includes a cleaning mechanism that is fixed to the inside of the hollow tank by a fastener. When the hollow tank rotates, it drives the inner wall wiping brush and the outer wall wiping brush to rotate synchronously. The inner wall wiping brush contacts the inside of the heating copper tube, and the outer wall wiping brush contacts the outside. During the rotation, the brush wipes and cleans the scale and impurities on the inner and outer walls of the copper tube.

[0016] (3) The self-cleaning spiral flow channel type natural gas water heater heat exchanger includes a rotating mechanism in which the motor drives the rotating shaft to rotate after starting, so that the small gear on the shaft rotates synchronously; because the small gear meshes with the large gear on the outside of the hollow barrel, the power is transmitted to the hollow barrel through gear transmission, and the gear reduction characteristics are used to make the hollow barrel rotate at a suitable speed, providing stable power for the cleaning mechanism. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a schematic diagram of the heat exchanger structure of the self-cleaning spiral flow channel natural gas water heater of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0020] Figure 3 This is a schematic cross-sectional view of the box structure of this utility model;

[0021] Figure 4This is a schematic diagram of the spiral flow channel structure of this utility model;

[0022] Figure 5 This is a schematic cross-sectional view of the spiral flow channel of this utility model;

[0023] Figure 6 This is a schematic diagram of the rotating mechanism of this utility model.

[0024] Reference numerals: 1. Box body; 2. Cover; 3. Support frame; 4. Hollow barrel; 5. Copper pipe mounting plate; 6. Heating copper pipe; 7. Outer wall wiping brush; 8. Fixing component; 9. Inner wall wiping brush; 10. Motor; 11. Rotating shaft; 12. Small gear; 13. Large gear; 14. Water passage hole; 15. Mounting screw; 16. Magnetic cleaning device. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] Please see Figure 1-6 This utility model provides a technical solution: a self-cleaning spiral flow channel type natural gas water heater heat exchanger, including a box 1, the inside of the box 1 is a hollow structure and the top is open, a cover 2 is fixedly connected to the top of the box 1, and an installation screw 15 is fixedly connected to the cover 2, and the installation screw 15 is fixedly connected to the box 1.

[0030] The housing 1 serves as the overall support structure, and its hollow design provides installation space for internal components. The cover 2 is fixed to the housing 1 by mounting screws 15, forming a closed environment to prevent heat loss and the entry of external impurities, ensuring that the heat exchange process is carried out efficiently in a relatively closed space, and providing stable external conditions for subsequent heating and cleaning operations.

[0031] Furthermore, two support frames 3 are fixedly connected inside the housing 1. A water passage hole 14 is fixedly connected inside the support frame 3. A copper pipe mounting plate 5 is fixedly connected to the water passage hole 14. A magnetic cleaning device 16 is fixedly connected to the copper pipe mounting plate 5. Multiple heating copper pipes 6 are fixedly connected to the copper pipe mounting plate 5.

[0032] The heating copper tube 6 has a variable diameter spiral structure, and the water passage hole 14 is rotatably connected to the hollow barrel 4.

[0033] A cleaning mechanism is provided on the inside of the hollow barrel 4;

[0034] The two support frames 3 inside the housing 1 provide stable support for the overall structure. The water passage 14 inside is not only a water flow channel, but also a fixed connection to the copper pipe mounting plate 5. The magnetic cleaning device 16 on the copper pipe mounting plate 5 can adsorb calcium and magnesium ions in the water, reducing impurities entering the heating copper pipe 6. The variable diameter spiral heating copper pipe 6 extends the water flow path and enhances the heat exchange efficiency. The water passage 14 is rotatably connected to the hollow barrel 4. When the hollow barrel 4 rotates, the cleaning mechanism inside it can clean the heating copper pipe 6, realizing the coordinated operation of heat exchange, impurity treatment, and cleaning.

[0035] Furthermore, the cleaning mechanism includes a fixing member 8, which is fixedly connected to the inside of the hollow barrel 4. An inner wall wiping brush 9 is fixedly connected to the fixing member 8, and an outer wall wiping brush 7 is fixedly connected to the inside of the hollow barrel 4.

[0036] The inner wall wiping brush 9 contacts the inner side of the heating copper tube 6, and the outer wall wiping brush 7 contacts the outer side of the heating copper tube 6;

[0037] The cleaning mechanism included in the structure is fixed to the inside of the hollow barrel 4 by the fastener 8. When the hollow barrel 4 rotates, it drives the inner wall wiping brush 9 and the outer wall wiping brush 7 to rotate synchronously. The inner wall wiping brush 9 contacts the inside of the heating copper tube 6, and the outer wall wiping brush 7 contacts the outside. During the rotation, the brushes wipe and clean the scale and impurities on the inner and outer walls of the copper tube.

[0038] Furthermore, a rotating mechanism is provided at the bottom of the inner part of the box 1. The rotating mechanism includes a motor 10, which is fixedly connected to the bottom of the inner part of the box 1. A rotating shaft 11 is fixedly connected to the output end of the motor 10. Two small gears 12 are fixedly connected to the rotating shaft 11, and two large gears 13 are fixedly connected to the outer side of the hollow barrel 4.

[0039] Small gear 12 meshes with large gear 13;

[0040] In the rotating mechanism included in the structure, after the motor 10 starts, it drives the rotating shaft 11 to rotate, so that the small gear 12 on the shaft rotates synchronously. Since the small gear 12 meshes with the large gear 13 on the outside of the hollow barrel 4, the power is transmitted to the hollow barrel 4 through gear transmission. By utilizing the gear reduction characteristics, the hollow barrel 4 rotates at a suitable speed, providing stable power for the cleaning mechanism.

[0041] Working principle: The two support frames 3 inside the housing 1 provide stable support for the overall structure. The water passage 14 inside is not only a water flow channel, but also a fixed connection to the copper pipe mounting plate 5. The magnetic cleaning device 16 on the copper pipe mounting plate 5 can adsorb calcium and magnesium ions in the water, reducing impurities entering the heating copper pipe 6. The variable diameter spiral heating copper pipe 6 extends the water flow path and enhances the heat exchange efficiency. The water passage 14 is rotatably connected to the hollow barrel 4. When the hollow barrel 4 rotates, the cleaning mechanism inside it can clean the heating copper pipe 6, realizing the coordinated operation of heat exchange, impurity treatment, and cleaning.

[0042] The support frame 3 supports the copper tube mounting plate 5 through the water passage hole 14, so that the heating copper tube 6 is installed stably; the spiral heating copper tube 6 increases the contact area with water and improves the heat exchange efficiency; the water passage hole 14 allows the hollow barrel 4 to rotate, providing a base for the cleaning mechanism. Water flows through the water passage hole 14 into the heating copper tube 6 and is heated in the spiral channel. At the same time, the rotation of the hollow barrel 4 prepares for cleaning.

[0043] The cleaning mechanism included in the structure is fixed to the inside of the hollow barrel 4 by the fastener 8. When the hollow barrel 4 rotates, it drives the inner wall wiping brush 9 and the outer wall wiping brush 7 to rotate synchronously. The inner wall wiping brush 9 contacts the inside of the heating copper tube 6, and the outer wall wiping brush 7 contacts the outside. During the rotation, the brushes wipe and clean the scale and impurities on the inner and outer walls of the copper tube.

[0044] In the rotating mechanism included in the structure, after the motor 10 starts, it drives the rotating shaft 11 to rotate, so that the small gear 12 on the shaft rotates synchronously. Since the small gear 12 meshes with the large gear 13 on the outside of the hollow barrel 4, the power is transmitted to the hollow barrel 4 through gear transmission. By utilizing the gear reduction characteristics, the hollow barrel 4 rotates at a suitable speed, providing stable power for the cleaning mechanism.

[0045] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A self-cleaning helical flow path natural gas water heater heat exchanger comprising a housing (1) characterised in that: The interior of the box (1) is hollow and the top is open. A cover (2) is fixedly connected to the top of the box (1). An installation screw (15) is fixedly connected to the cover (2). The installation screw (15) is threadedly connected to the box (1). The box body (1) is internally connected to two support frames (3), the support frames (3) are internally connected to a water passage hole (14), the water passage hole (14) is fixedly connected to a copper pipe mounting plate (5), the copper pipe mounting plate (5) is fixedly connected to a magnetic cleaning device (16), and the copper pipe mounting plate (5) is fixedly connected to a heating copper pipe (6). The water passage (14) is rotatably connected to a hollow barrel (4); A cleaning mechanism is provided on the inside of the hollow barrel (4).

2. A self-cleaning helical flow path natural gas water heater heat exchanger according to claim 1, wherein: The heating copper tube (6) has a variable diameter spiral structure.

3. A self-cleaning helical flow path natural gas water heater heat exchanger according to claim 2, wherein: The cleaning mechanism includes a fixing member (8), which is fixedly connected to the inside of the hollow barrel (4). An inner wall wiping brush (9) is fixedly connected to the fixing member (8), and an outer wall wiping brush (7) is fixedly connected to the inside of the hollow barrel (4).

4. A self-cleaning helical flow path natural gas water heater heat exchanger according to claim 3, wherein: The inner wall wiping brush (9) contacts the inner side of the heating copper tube (6), and the outer wall wiping brush (7) contacts the outer side of the heating copper tube (6).

5. A self-cleaning helical flow path natural gas water heater heat exchanger according to claim 4, wherein: The bottom of the box (1) is provided with a rotating mechanism, which includes a motor (10). The motor (10) is fixedly connected to the bottom of the box (1). The output end of the motor (10) is fixedly connected to a rotating shaft (11). Two small gears (12) are fixedly connected on the rotating shaft (11). Two large gears (13) are fixedly connected to the outside of the hollow barrel (4).

6. A self-cleaning helical flow path natural gas water heater heat exchanger according to claim 5, wherein: The small gear (12) meshes with the large gear (13).

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