Energy-saving gas water heater
By using a serpentine tube and insulation tube design, the problems of uneven heating and difficulty in maintaining water temperature in gas water heaters are solved, resulting in a more efficient and energy-saving gas water heater design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING JUHE ELECTRIC CO LTD
- Filing Date
- 2025-06-13
- Publication Date
- 2026-05-12
AI Technical Summary
Existing energy-saving gas water heaters suffer from problems such as uneven heating of water pipes, long heating time, high gas consumption, and difficulty in maintaining water temperature after the outlet valve is closed.
The system employs a serpentine heating structure and an insulation pipe design. The serpentine pipe is heated by combustion plates installed at equal intervals, ensuring uniform heating within the water pipe. After heating, the water enters the insulation pipe to maintain a stable temperature, reducing gas consumption.
This achieves more uniform heating within the water pipes, reduces gas consumption, shortens heating time, and allows the insulated water to be reused after the water valve is closed, thus improving the energy efficiency of the device.
Smart Images

Figure CN224230319U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water heater technology, specifically to an energy-saving gas water heater. Background Technology
[0002] A gas water heater, also known as a gas water boiler, is a gas appliance that uses gas as fuel and heats water by transferring heat to cold water flowing through a heat exchanger. A gas water heater mainly consists of a valve assembly, main burner, pilot burner, heat exchanger, and safety devices. It may also include the forced draft device in flue-type water heaters and forced draft water heaters. The valve assembly controls the entire operation of the water heater and includes the water valve, gas valve, microswitch, and igniter.
[0003] The existing technology has the following problems:
[0004] 1. Existing energy-saving gas water heaters heat water from the bottom through the pipes, which means the top of the pipes cannot be heated, resulting in uneven water heating. This requires a large amount of gas to heat the water, takes longer, and consumes more gas.
[0005] 2. Existing energy-saving gas water heaters cannot keep the water in the pipes below warm after the outlet valve is closed, resulting in a long wait for cold water to boil next time. Since the gas requires a lot of combustion for heating and there is no transition pipe, the device consumes more energy. Utility Model Content
[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0007] An energy-saving gas water heater includes an installation box. A water inlet valve is connected through one side of the bottom of the installation box. A gas heating device is fixedly connected to the top of the water inlet valve. A flue pipe is fixedly connected to the top of the gas heating device. An insulation pipe is fixedly connected to the bottom of the gas heating device. A detection tube is fixedly connected to one side of the insulation pipe. A temperature detection rod is fixedly connected to the outer wall of the detection tube. A display screen is fixedly connected to the front of the temperature detection rod. A water outlet valve is fixedly connected to one side of the detection tube.
[0008] A further improvement of this utility model is that: inside the protective shell of the display screen, a gas pipe is fixedly connected to one side of the mounting box, a gas pipe is fixedly connected to one end of the gas pipe, and the bottom of the gas heating device is installed at one end of the gas pipe.
[0009] A further improvement of this utility model is that a filter bucket is fixedly connected to the top of the water inlet valve, and a connecting pipe is fixedly connected to the top of the filter bucket.
[0010] A further improvement of the present invention is that the gas heating device includes an anti-burn box, a serpentine tube is fixedly connected inside the anti-burn box, a through pipe is fixedly connected to one end of the serpentine tube, the other end of the serpentine tube is fixedly connected to a connecting pipe, a burner is fixedly connected to the bottom of the anti-burn box, a combustion plate is fixedly connected to the top of the burner, and an igniter is fixedly connected to the front of the burner.
[0011] A further improvement of this utility model is that the serpentine tube penetrates the interior of the combustion plate, and the bottom of the burner is fixedly connected to one end of the gas pipe.
[0012] A further improvement of this utility model is that: the heat insulation pipe includes a water tank, one side of the water tank is fixedly installed on one side of the mounting box, a water injection pipe is fixedly connected to the top of the water tank, a water inlet pipe is fixedly connected to one side of the water tank, a threaded pipe is fixedly connected to one end of the water inlet pipe, a water outlet pipe is fixedly connected to one end of the threaded pipe, one end of the water outlet pipe is fixedly connected to one side of the water tank, and a hot air cylinder is connected through the inside of the threaded pipe.
[0013] A further improvement of this utility model is that: one end of the hot air cylinder is fixedly connected to one side of the through pipe, the other side of the hot air cylinder is fixedly connected to a drain pipe, one end of the drain pipe is fitted with an insulation layer on its outer wall, and one end of the drain pipe is fixedly connected to one side of the detection pipe.
[0014] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:
[0015] This utility model provides an energy-saving gas water heater. The igniter heats the gas at the top of the burner, and the heated gas ignites the combustion plates. The combustion plates are installed at equal intervals so that the outer flame temperature heats the serpentine tube inside more evenly. The serpentine tube has a three-end heating length, which allows the tap water to be heated for a longer time inside, reducing gas emissions and saving energy. At the same time, the multiple sets of combustion plates make the heating area more even and the heating more stable.
[0016] This utility model provides an energy-saving gas water heater. Preheated tap water enters an insulated pipe for storage. The outer wall of the insulated pipe is heated by water entering the interior of a threaded tube, maintaining a stable temperature. This ensures the heated water's temperature doesn't decrease during storage within the insulated pipe. After use, the insulated water can be discharged, eliminating the need to release large amounts of cold water. Furthermore, after closing the water valve, any remaining hot water can be stored for future use, reducing gas combustion and making the device more energy-efficient. Attached Figure Description
[0017] Figure 1This is a schematic diagram of the structure of the energy-saving gas water heater of this utility model;
[0018] Figure 2 This is a schematic diagram of the internal structure of the mounting box of this utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the gas heating device of this utility model;
[0020] Figure 4 This is a schematic diagram of the structure of the heat insulation pipe of this utility model.
[0021] In the diagram: 1. Mounting box; 2. Inlet valve; 3. Gas heating device; 4. Exhaust pipe; 5. Insulation pipe; 6. Detection pipe; 7. Outlet valve; 8. Gas connection pipe; 81. Gas pipe; 9. Display screen; 10. Protective shell; 21. Filter canister; 22. Connecting pipe; 31. Anti-burn box; 32. Snake-shaped pipe; 33. Burner; 34. Combustion disc; 35. Through pipe; 36. Ignition device; 51. Water tank; 52. Water injection pipe; 53. Inlet pipe; 54. Threaded pipe; 55. Outlet pipe; 56. Hot air cylinder; 57. Drain pipe; 58. Insulation layer; 61. Temperature detection rod. Detailed Implementation
[0022] The present invention will be further described in detail below with reference to embodiments: Example
[0023] like Figure 1-4 As shown, this utility model provides an energy-saving gas water heater, including an installation box 1. A water inlet valve 2 is connected through one side of the bottom of the installation box 1. A gas heating device 3 is fixedly connected to the top of the water inlet valve 2. A flue pipe 4 is fixedly connected to the top of the gas heating device 3. An insulation pipe 5 is fixedly connected to the bottom of the gas heating device 3. A detection pipe 6 is fixedly connected to one side of the insulation pipe 5. A temperature detection rod 61 is fixedly connected to the outer wall of the detection pipe 6. A display screen 9 is fixedly connected to the front of the temperature detection rod 61. A water outlet valve 7 is fixedly connected to one side of the detection pipe 6.
[0024] Inside the protective shell 10, the display screen 9 is installed. A gas pipe 8 is fixedly connected to one side of the mounting box 1. A gas pipe 81 is fixedly connected to one end of the gas pipe 8. The bottom of the gas heating device 3 is installed at one end of the gas pipe 81.
[0025] A filter bucket 21 is fixedly connected to the top of the water inlet valve 2, and a connecting pipe 22 is fixedly connected to the top of the filter bucket 21.
[0026] In this embodiment, tap water is injected from one end of the inlet valve 2, then enters the filter tank 21 at the top for filtration, and then enters the gas heating device 3. The gas heating device 3 is activated to raise the temperature of the tap water passing through it. The water then enters the insulation pipe 5 for temperature control to keep the water warm before it is discharged from the device for use. Heating and then keeping the water warm reduces heat consumption, enabling the device to save energy and reduce consumption. Example
[0027] like Figure 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the gas heating device 3 includes an anti-burn box 31, a serpentine tube 32 is fixedly connected inside the anti-burn box 31, a through pipe 35 is fixedly connected to one end of the serpentine tube 32, the other end of the serpentine tube 32 is fixedly connected to a connecting pipe 22, a burner 33 is fixedly connected to the bottom of the anti-burn box 31, a combustion plate 34 is fixedly connected to the top of the burner 33, and an igniter 36 is fixedly connected to the front of the burner 33.
[0028] The serpentine tube 32 passes through the interior of the combustion plate 34, and the bottom of the burner 33 is fixedly connected to one end of the gas pipe 81.
[0029] In this embodiment, the igniter 36 is activated to heat the gas at the top of the burner 33. The increased gas temperature ignites the combustion plates 34. The combustion plates 34 are installed at equal intervals, so that the outer flame temperature heats the serpentine tube 32 that is clipped inside. The serpentine tube 32 has a three-end heating length, which allows the tap water to be heated inside for a longer time, thereby reducing gas emissions and saving energy. At the same time, the multiple sets of combustion plates 34 are connected to make the heating area more even and the heating more stable. Example
[0030] like Figure 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the heat insulation pipe 5 includes a water tank 51, one side of the water tank 51 is fixedly installed on one side of the mounting box 1, a water injection pipe 52 is fixedly connected to the top of the water tank 51, a water inlet pipe 53 is fixedly connected to one side of the water tank 51, a threaded pipe 54 is fixedly connected to one end of the water inlet pipe 53, a water outlet pipe 55 is fixedly connected to one end of the threaded pipe 54, one end of the water outlet pipe 55 is fixedly connected to one side of the water tank 51, and a hot air cylinder 56 is connected through the inside of the threaded pipe 54.
[0031] One end of the hot air cylinder 56 is fixedly connected to one side of the through pipe 35, and the other side of the hot air cylinder 56 is fixedly connected to the drain pipe 57. One end of the drain pipe 57 is fitted with an insulation layer 58, and one end of the drain pipe 57 is fixedly connected to one side of the detection pipe 6.
[0032] In this embodiment, the heated tap water enters the insulation pipe 5 for storage. The heated water on the outer wall enters the threaded pipe 54 to keep its temperature stable, so that the temperature of the heated water stored inside the insulation pipe 5 will not decrease. After the hot water is used, the insulated water can be discharged for use without releasing a large amount of cold water. At the same time, after the water valve is closed, the remaining hot water can also enter and be stored for the next use, which reduces the combustion of gas and makes the device more energy-efficient.
[0033] The working principle of this energy-saving gas water heater will be explained in detail below.
[0034] like Figure 1-4 As shown, when this energy-saving gas water heater is in use, tap water is injected from one end of the inlet valve 2. The tap water then enters the filter tank 21 at the top for filtration, and then enters the gas heating device 3. The gas heating device 3 is activated, which raises the temperature of the tap water passing through it. The water then enters the insulation pipe 5 for temperature control to keep the water warm before it is discharged from the device for use. Heating followed by insulation reduces heat consumption, enabling the device to save energy. The igniter 36 is activated to heat the gas at the top of the burner 33. The increased gas temperature ignites the combustion plates 34. The combustion plates 34 are installed at equal intervals, so that the outer flame heats the serpentine tube 32 that is clamped inside. The serpentine tube 32 is a three-pronged... The extended heating length allows for longer heating time of tap water inside, reducing gas emissions and improving energy efficiency. The multiple sets of combustion plates 34, when nested, ensure a more even heating area and more stable heating. Heated tap water is stored in the insulation pipe 5, while the outer wall of the pipe allows heated water to enter the threaded pipe 54, maintaining a stable temperature and preventing the temperature from dropping within the insulation pipe 5. After use, the insulated water can be drained, eliminating the need to release large amounts of cold water. Furthermore, after closing the water valve, any remaining hot water can be stored for future use, further reducing gas combustion and making the device more energy-efficient.
[0035] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. An energy-saving gas water heater, comprising a mounting box (1), characterized in that: A water inlet valve (2) is connected through one side of the bottom of the mounting box (1). A gas heating device (3) is fixedly connected to the top of the water inlet valve (2). A flue pipe (4) is fixedly connected to the top of the gas heating device (3). A heat insulation pipe (5) is fixedly connected to the bottom of the gas heating device (3). A detection pipe (6) is fixedly connected to one side of the heat insulation pipe (5). A temperature detection rod (61) is fixedly connected to the outer wall of the detection pipe (6). A display screen (9) is fixedly connected to the front of the temperature detection rod (61). A water outlet valve (7) is fixedly connected to one side of the detection pipe (6).
2. The energy-saving gas water heater according to claim 1, characterized in that: The display screen (9) is installed inside the protective shell (10). A gas pipe (8) is fixedly connected to one side of the mounting box (1). A gas pipe (81) is fixedly connected to one end of the gas pipe (8). The bottom of the gas heating device (3) is installed at one end of the gas pipe (81).
3. The energy-saving gas water heater according to claim 1, characterized in that: A filter bucket (21) is fixedly connected to the top of the water inlet valve (2), and a connecting pipe (22) is fixedly connected to the top of the filter bucket (21).
4. An energy-saving gas water heater according to claim 1, characterized in that: The gas heating device (3) includes an anti-burn box (31), a serpentine tube (32) is fixedly connected inside the anti-burn box (31), a through pipe (35) is fixedly connected to one end of the serpentine tube (32), and the other end of the serpentine tube (32) is fixedly connected to a connecting pipe (22). A burner (33) is fixedly connected to the bottom of the anti-burn box (31), a combustion plate (34) is fixedly connected to the top of the burner (33), and an igniter (36) is fixedly connected to the front of the burner (33).
5. An energy-saving gas water heater according to claim 4, characterized in that: The serpentine tube (32) penetrates the interior of the combustion plate (34), and the bottom of the burner (33) is fixedly connected to one end of the gas pipe (81).
6. An energy-saving gas water heater according to claim 1, characterized in that: The insulation pipe (5) includes a water tank (51), one side of which is fixedly installed on the side of the mounting box (1). A water injection pipe (52) is fixedly connected to the top of the water tank (51), and a water inlet pipe (53) is fixedly connected to one side of the water tank (51). A threaded pipe (54) is fixedly connected to one end of the water inlet pipe (53), and a water outlet pipe (55) is fixedly connected to one end of the threaded pipe (54). One end of the water outlet pipe (55) is fixedly connected to one side of the water tank (51), and a hot air cylinder (56) is connected through the inside of the threaded pipe (54).
7. An energy-saving gas water heater according to claim 6, characterized in that: One end of the hot air cylinder (56) is fixedly connected to one side of the through pipe (35), and the other side of the hot air cylinder (56) is fixedly connected to a drain pipe (57). One end of the drain pipe (57) is fitted with an insulation layer (58) on its outer wall, and one end of the drain pipe (57) is fixedly connected to one side of the detection pipe (6).