Novel gas water heater heat exchanger

Abstract

The utility model discloses a novel gas water heater heat exchanger, and relates to the technical field of heat exchangers. According to the technical scheme, the heat exchanger is characterized by comprising two supporting plates, a first heat exchange pipe is arranged between the two supporting plates, a second heat exchange pipe and a third heat exchange pipe are arranged on the portions, located on the two sides of the first heat exchange pipe, between the two supporting plates respectively, and the end, extending out of one supporting plate, of the first heat exchange pipe is connected with a water inlet pipe; a first U-shaped pipe is arranged between the other end of the first heat exchange pipe and the end of the second heat exchange pipe, a second U-shaped pipe is arranged between the other end of the second heat exchange pipe and the end of the third heat exchange pipe, and a water outlet pipe is arranged at the other end of the third heat exchange pipe. And heat-conducting fins are uniformly arranged among the first heat exchange pipe, the second heat exchange pipe and the third heat exchange pipe. The utility model aims to provide a novel heat exchanger of a fuel gas water heater.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, and more specifically, to a novel gas-fired water heater heat exchanger. Background Art

[0002] A gas water heater, also known as a gas water boiler, is a gas appliance that uses gas as fuel and transfers heat to cold water flowing through a heat exchanger through combustion heating to achieve the purpose of preparing hot water.

[0003] The gas water heater is mainly composed of an exhaust device, a heat exchanger and a burner assembly. The burner assembly heats the heat exchange tubes that are passed through and wrapped around the heat exchanger, and the exhaust device is used to discharge the smoke. The heat exchange tubes in existing heat exchangers usually adopt reciprocating winding coils to ensure the heat exchange effect. However, a large number of heat exchange tubes increases the production cost and difficulty, and the connection between a large number of heat exchange tubes will increase the possibility of water leakage, affecting their service life.

[0004] Therefore, a new technical solution is urgently needed to solve the above technical problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a new type of gas water heater heat exchanger.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions: a new type of gas water heater heat exchanger, comprising two support plates, a first heat exchange tube is arranged between the two support plates, a second heat exchange tube and a third heat exchange tube are respectively arranged on both sides of the first heat exchange tube between the two support plates, one end of the first heat exchange tube extending out of a support plate is connected to a water inlet pipe, a first U-shaped tube is arranged between the other end of the first heat exchange tube and the end of the second heat exchange tube, a second U-shaped tube is arranged between the other end of the second heat exchange tube and the end of the third heat exchange tube, a water outlet pipe is arranged at the other end of the third heat exchange tube, and heat conducting plates are evenly arranged between the first heat exchange tube, the second heat exchange tube and the third heat exchange tube.

[0007] By adopting the above technical solution, the heat exchanger only has three heat exchange tubes, and the overall structure is simple and light, which reduces the production and transportation costs. The first heat exchange tube, the second heat exchange tube and the third heat exchange tube are connected only by welding the first U-shaped tube and the second U-shaped tube, thereby effectively reducing the possibility of water leakage.

[0008] The utility model is further configured as follows: an L-shaped bypass pipe is arranged between the end of the third heat exchange pipe close to the water inlet pipe and the top of the water inlet pipe.

[0009] The utility model is further configured as follows: mounting plates are arranged along the circumference of the outer surfaces of the two support plates, sealing plates are arranged between the four mounting plates, a sealed sealing cavity is formed between the sealing plate, the support plate and the four mounting plates, and both ends of the first heat exchange tube, the second heat exchange tube and the third heat exchange tube are located in the sealed cavity.

[0010] The utility model is further configured as follows: the sealing plate includes two split plates arranged up and down, and the first heat exchange tube, the second heat exchange tube, the third heat exchange tube, and a semicircular groove for the water inlet pipe and the water outlet pipe to pass through are opened on the opposite sides of the two split plates, one side of the two split plates extends out from the outer surfaces of the top and bottom mounting plates, and is fixedly connected with a fixing plate that fits the outer surface of the mounting plate, and the fixing plate and the mounting plate are fixedly connected by bolts.

[0011] The utility model is further configured as follows: each of the mounting plates is located on the outer side of the sealing cavity and is provided with a mounting hole.

[0012] The utility model is further configured as follows: a temperature sensor is arranged at the bottom of the sealed cavity.

[0013] The utility model has the following beneficial effects: 1. The heat exchanger has only three heat exchange tubes, and the overall structure is simple and light, which reduces the production and transportation costs. The first heat exchange tube, the second heat exchange tube and the third heat exchange tube are connected only by welding the first U-shaped tube and the second U-shaped tube, thereby effectively reducing the possibility of water leakage.

[0014] 2. The heat exchanger has no coils, and the total length of the water pipes is shortened, which can further reduce the possibility of water leakage in the heat exchanger.

[0015] 3. The heat exchanger has no shell and coil, which reduces the overall weight of the product, improves its production and processing efficiency, improves the adaptability and versatility of accessories, and facilitates the inventory management of accessories in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the three-dimensional structure of this embodiment;

[0017] Figure 2 It is a partial structural schematic diagram of this embodiment;

[0018] Figure 3 It is a schematic diagram of the explosion structure of the support plate and the sealing plate of this embodiment.

[0019] Description of the drawings: 1. Support plate; 2. First heat exchange tube; 3. Second heat exchange tube; 4. Third exchange tube; 5. Water inlet pipe; 6. First U-shaped tube; 7. Second U-shaped tube; 8. Water outlet pipe; 9. Heat conducting plate; 10. Bypass pipe; 11. Mounting plate; 12. Sealing plate; 1201. Dividing plate; 13. Semicircular groove; 14. Fixing plate; 15. Bolt; 16. Mounting hole. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0021] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0022] As shown in the figure, a new type of gas water heater heat exchanger includes two support plates 1, a first heat exchange tube 2 is arranged between the two support plates 1, a second heat exchange tube 3 and a third heat exchange tube 4 are respectively arranged on both sides of the first heat exchange tube between the two support plates 1, one end of the first heat exchange tube 2 extending out of one support plate 1 is connected to a water inlet pipe 5, a first U-shaped tube 6 is arranged between the other end of the first heat exchange tube 2 and the end of the second heat exchange tube 3, a second U-shaped tube 7 is arranged between the other end of the second heat exchange tube 3 and the end of the third heat exchange tube 4, a water outlet pipe 8 is arranged at the other end of the third heat exchange tube 4, and heat conductive sheets 9 are evenly arranged between the first heat exchange tube 2, the second heat exchange tube 3 and the third heat exchange.

[0023] The heat exchanger has only three heat exchange tubes, so the overall structure is simple and the weight is light, which reduces the production and transportation costs. The first heat exchange tube 2, the second heat exchange tube 3 and the third heat exchange tube 4 are connected only by welding the first U-shaped tube 6 and the second U-shaped tube 7, thereby effectively reducing the possibility of water leakage.

[0024] An L-shaped bypass pipe 10 is provided between the end of the third heat exchange tube 4 close to the water inlet pipe 5 and the top of the water inlet pipe 5. When the water heater using the heat exchanger is just started to work, the water remaining in the third heat exchange tube 4 flows back into the first heat exchange tube 2 through the bypass pipe 10 to fully heat this part of the water, thereby improving its use effect.

[0025] The outer surfaces of the two support plates 1 are provided with mounting plates 11 along their circumferences, and sealing plates 12 are provided between the four mounting plates 11. A sealed sealing cavity is formed between the sealing plate 12, the support plates 1 and the four mounting plates 11, and the welding points at both ends of the first heat exchange tube 2, the second heat exchange tube 3, and the third heat exchange tube 4 are all located in the sealed cavity. When water leaks from the welding points at both ends of each heat exchange tube, water flows into the sealed cavity to prevent water from flowing into the inside of the water heater and affecting the normal use of the water heater. Each mounting plate 11 is also provided with a mounting hole 16 on the outside of the sealed cavity to facilitate the installation of the heat exchanger.

[0026] The sealing plate 12 includes two sub-plates 1201 arranged vertically, and a semicircular groove 13 for the first heat exchange tube 2, the second heat exchange tube 3, the third heat exchange tube 4, the water inlet pipe 5 and the water outlet pipe 8 is provided on the opposite side of the two sub-plates 1201. One side of the two sub-plates 1201 extends out of the outer surface of the top and bottom mounting plates 11, and is fixedly connected with a fixing plate 14 affixed to the outer surface of the mounting plate 11. The fixing plate 14 and the mounting plate 11 are fixedly connected by bolts 15, and a temperature sensor (not shown in the figure) is arranged at the bottom of the sealing cavity.

[0027] By setting an alarm or alarm light on the outside of the water heater and connecting the electrical signal to the temperature sensor, it is possible to know whether the heat exchanger is leaking through the temperature sensor. If leakage occurs, the two sub-plates 1201 can be disassembled by unscrewing the bolts to repair the heat exchanger.

[0028] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A new type of gas water heater heat exchanger, characterized by: The invention comprises two support plates (1), a first heat exchange tube (2) is arranged between the two support plates (1), a second heat exchange tube (3) and a third heat exchange tube (4) are arranged between the two support plates (1) on both sides of the first heat exchange tube (2), one end of the first heat exchange tube (2) extending out of one support plate (1) is connected to a water inlet tube (5), a first U-shaped tube (6) is arranged between the other end of the first heat exchange tube (2) and the end of the second heat exchange tube (3), a second U-shaped tube (7) is arranged between the other end of the second heat exchange tube (3) and the end of the third heat exchange tube (4), a water outlet tube (8) is arranged at the other end of the third heat exchange tube (4), and heat conducting sheets (9) are evenly arranged between the first heat exchange tube (2), the second heat exchange tube (3) and the third heat exchange tube (4).

2. A novel gas-fired water heater heat exchanger according to claim 1, characterized in that: An L-shaped bypass pipe (10) is provided between the end of the third heat exchange pipe (4) close to the water inlet pipe (5) and the top end of the water inlet pipe (5).

3. A novel gas-fired water heater heat exchanger according to claim 1, characterized in that: The outer surfaces of the two support plates (1) are provided with mounting plates (11) along their circumferences, and sealing plates (12) are provided between the four mounting plates (11). A sealed cavity is formed between the sealing plate (12), the support plate (1) and the four mounting plates (11), and both ends of the first heat exchange tube (2), the second heat exchange tube (3) and the third heat exchange tube (4) are located in the sealed cavity.

4. A novel gas-fired water heater heat exchanger according to claim 3, characterized in that: The sealing plate (12) comprises two split plates (1201) arranged vertically, and the two split plates (1201) are provided with a first heat exchange tube (2), a second heat exchange tube (3), a third heat exchange tube (4), a semicircular groove (13) for the water inlet pipe (5) and the water outlet pipe (8) on opposite sides thereof. One side of the two split plates (1201) extends out of the outer surface of the top and bottom mounting plates (11) and is fixedly connected to a fixing plate (14) attached to the outer surface of the mounting plate (11), and the fixing plate (14) is fixedly connected to the mounting plate (11) by bolts (15).

5. A novel gas-fired water heater heat exchanger according to claim 4, characterized in that: Each of the mounting plates (11) is also provided with a mounting hole (16) located outside the sealing cavity.

6. A novel gas-fired water heater heat exchanger according to claim 5, characterized in that: A temperature sensor is arranged at the bottom of the sealed cavity.

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