Heating and insulation structure of gas water heater

Abstract

This utility model provides a heating and heat insulation structure for a gas water heater, relating to the field of water heater technology. It includes a gas assembly with a combustion heat insulation chamber above it, and a heat exchanger at the upper end of the combustion heat insulation chamber. The gas assembly includes a gas valve and a burner. The gas valve is connected to the natural gas supply to the burner for combustion. The combustion heat insulation chamber provides a relatively sealed space for the mixed combustion of gas and air. The advantages of this utility model are that the partition component of the combustion heat insulation chamber adopts a combined design of heat insulation wall panels, heat insulation layers, and air layers, effectively reducing heat loss, improving energy utilization efficiency, and lowering operating costs. Furthermore, the convex round block design on the heat insulation wall panel enhances the stability of the connection between the heat insulation wall panel and the heat insulation layer, while also improving the rigidity of the heat insulation wall panel, preventing it from being dented under pressure, and ensuring the long-term stability of the heat insulation structure.

Description

Technical Field

[0001] The utility model relates to the field of water heater technology, and in particular to a heating and insulation structure for a gas water heater. Background Technology

[0002] As a commonly used household hot water supply device, the design rationality of the heating and insulation structure of a gas water heater directly affects energy efficiency, safety, and overall performance. Generally speaking, the heating and insulation structure of a gas water heater mainly consists of a gas assembly, a combustion chamber, and a heat exchanger.

[0003] The gas combustion unit is a crucial component providing fuel for the combustion process. It precisely controls the gas supply, ensuring stable and efficient combustion. The combustion chamber is the core area of ​​the entire heating process, where the gas mixes thoroughly with air and burns, releasing a large amount of heat. The heat exchanger's role is to transfer the heat generated in the combustion chamber to cold water, heating it into usable hot water.

[0004] To improve energy efficiency, reduce heat loss, and prevent users from being scalded by the high temperatures generated by the water heater, insulation materials are typically installed inside the combustion chamber. These materials possess excellent insulation properties, effectively transferring as much heat generated by fuel combustion as possible to the water flowing through the heat exchanger, thus minimizing heat loss during the transfer process. By employing effective insulation measures, not only can energy consumption be reduced, achieving energy conservation and emission reduction goals, but the external temperature of the water heater can also be prevented from becoming excessively high, reducing the risk of scalding for users. Furthermore, the insulation layer protects the internal components of the water heater from external environmental factors, extending the equipment's lifespan.

[0005] Currently, most gas water heaters on the market rely primarily on insulation materials for their insulation layer. However, further optimizing the structural design of the insulation layer beyond the existing materials to fully leverage its advantages can significantly improve its insulation performance. A well-designed structure allows for a more tortuous heat transfer path within the insulation layer, increasing resistance to heat transfer and thus reducing heat loss. Furthermore, an optimized structure can reduce the amount of insulation material used, lowering production costs and enhancing the product's market competitiveness.

[0006] The technical content disclosed in the Chinese patent document (publication number: CN101025290A, patent name: heat exchange method and device for water heater) is as follows: the water heater has a heat insulation layer, which tightly covers the side surface of the heat exchanger, except for the upper surface part connected to the flue and the lower surface part connected to the combustion chamber, as well as the water outlet and water inlet positions; the heat insulation layer tightly covers the spatial surface of the combustion chamber, except for the upper part connected to the heat exchanger and the fuel and air inlet positions; the heat insulation layers covering the heat exchanger and the combustion chamber respectively, as well as the joint between the two, are impermeable to flue gas when the water heater is working.

[0007] As can be seen from the above implementation plan and corresponding drawings, the specific structure of the heat exchange device for this water heater is not disclosed. This means that the insulation layer only achieves its insulation function through the application of insulation materials, failing to fully utilize the advantages of the structural design in terms of insulation, and thus failing to optimally realize the function and benefits of insulation. Utility Model Content

[0008] This utility model overcomes the shortcomings of the prior art and provides a heating and heat insulation structure for a gas water heater. The partition component of the combustion heat insulation chamber adopts a combination design of heat insulation wall panel, heat insulation layer and air layer, which effectively reduces heat loss, improves energy utilization efficiency and reduces operating costs. In addition, the convex round block design on the heat insulation wall panel enhances the stability of the connection between the heat insulation wall panel and the heat insulation layer, while improving the rigidity of the heat insulation wall panel, preventing it from being crushed and ensuring the long-term stability of the heat insulation structure.

[0009] To solve the above-mentioned technical problems, the utility model is implemented through the following technical solution:

[0010] A heating and heat insulation structure for a gas water heater includes a gas component, a combustion heat insulation chamber above the gas component, and a heat exchanger at the upper end of the combustion heat insulation chamber.

[0011] The gas assembly includes a gas valve and a burner. The gas valve is connected to the natural gas supply burner for combustion, and the combustion insulation chamber provides a relatively enclosed space for the mixed combustion of gas and air.

[0012] The combustion insulation chamber is surrounded by partition components, and the heat exchanger is located within the space surrounded by the partition components. The partition components include insulation wall panels and insulation layers, and an air layer is provided between the insulation wall panels and the insulation layers.

[0013] Furthermore, the heat insulation wall panel is provided with convex round blocks that protrude towards the heat insulation layer, with the top of the convex round blocks abutting against the heat insulation layer.

[0014] Furthermore, the heat exchanger includes a water pipe and a heating element. One end of the water pipe is connected to a water pump, which is used to pump water into the water pipe. The other end of the water pipe is connected to a water outlet valve, which is used to output water that has been heated by the water pipe.

[0015] Furthermore, the heating element is provided in several parts, with a gap between each pair of heating elements.

[0016] Furthermore, the water pipe is inserted into the heating element, and the water pipe connects several heating elements together in series.

[0017] Furthermore, an expansion tank is provided on the side of the heat exchanger, and the expansion tank is connected to a water pipe.

[0018] Furthermore, an inner circulation shell is provided above the heat exchanger, and the inner circulation shell is connected to a fan.

[0019] Furthermore, an outer circulation shell is provided outside the gas assembly, combustion insulation chamber, heat exchanger, and inner circulation shell.

[0020] Furthermore, the top of the external circulation housing is provided with a top plate; the top plate is provided with a gas inlet, and the air outlet of the fan is inserted into the gas inlet. The air outlet of the fan is smaller than the gas inlet, so an air inlet channel is formed between the air outlet of the fan and the gas inlet.

[0021] The blower draws out the hot air from the inner circulation shell and discharges it from the blower's outlet. External air enters the outer circulation shell through the air inlet channel and enters the combustion insulation chamber from below the gas components.

[0022] Furthermore, the external circulation housing includes a back plate, with side plates connected to both sides of the back plate and a lower partition plate connected to the middle of the back plate. The partition plate isolates the gas assembly, combustion insulation chamber, heat exchanger, internal circulation housing, and other control components of the water heater.

[0023] The back panel is also provided with a front panel and an operation panel, the operation panel being used to install operation control buttons.

[0024] Compared with existing technologies, the advantages of this utility model are:

[0025] The partition components of the combustion insulation chamber adopt a combination design of insulation wall panels, insulation layer and air layer, which effectively reduces heat loss, improves energy utilization efficiency and reduces operating costs. In addition, the convex round block design on the insulation wall panel enhances the stability of the connection between the insulation wall panel and the insulation layer, while improving the rigidity of the insulation wall panel, preventing it from being dented under pressure, and ensuring the long-term stability of the insulation structure. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the utility model and, together with the embodiments of the utility model, are used to explain the utility model. They do not constitute a limitation on the utility model. In the drawings:

[0027] Figure 1 This is a schematic diagram of the overall structure of the water heater according to an embodiment of the present utility model;

[0028] Figure 2 This is a schematic diagram of the internal structure of the water heater according to an embodiment of the present utility model;

[0029] Figure 3 This is an explosion diagram of the heat exchanger, gas assembly, and combustion insulation chamber according to an embodiment of the present invention.

[0030] In the diagram: 1. Fan; 2. Inner circulation shell; 3. Heat exchanger; 301. Water pipe; 302. Heating element; 303. Water pump; 304. Water outlet valve; 4. Gas assembly; 401. Gas valve; 402. Burner; 5. Combustion insulation chamber; 501. Insulation wall panel; 502. Insulation layer; 6. Outer circulation shell; 601. Back panel; 602. Side panel; 603. Top panel; 6031. Gas inlet; 604. Lower partition; 605. Front panel; 606. Control panel; 7. Expansion tank. Detailed Implementation

[0031] The preferred embodiments of the utility model are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the utility model.

[0032] like Figures 1 to 3 As shown, a heating and heat insulation structure for a gas water heater includes a gas assembly 4, a combustion heat insulation chamber 5 above the gas assembly 4, and a heat exchanger 3 at the upper end of the combustion heat insulation chamber 5. The gas assembly 4 includes a gas valve 401 and a burner 402. The gas valve 401 is connected to the natural gas supply burner 402 for combustion. The combustion heat insulation chamber 5 provides a relatively sealed space for the mixed combustion of gas and air. The combustion heat insulation chamber 5 is surrounded by partition components. The heat exchanger 3 is located within the space surrounded by the partition components. The partition components include a heat insulation wall panel 501 and a heat insulation layer 502. An air layer is also provided between the heat insulation wall panel 501 and the heat insulation layer 502. In this embodiment, the main components of the heat insulation layer 502 are natural minerals such as asbestos and slag, which have good thermal insulation performance. The material is not only lightweight, easy to construct and maintain, but also relatively low in cost.

[0033] Because an air layer is provided between the heat insulation panel 501 and the heat insulation layer 502, the presence of the air layer further enhances the heat insulation effect. It acts like a natural heat insulation barrier, effectively preventing the transfer of heat.

[0034] The heat insulation wall panel 501 is provided with a convex round block that protrudes towards the heat insulation layer 502. The top of the convex round block abuts against the heat insulation layer 502. This design not only makes the connection between the heat insulation wall panel 501 and the heat insulation layer 502 more stable, but also enhances the rigidity of the heat insulation wall panel 501, preventing it from denting due to pressure during long-term use.

[0035] The heat exchanger 3 includes a water pipe 301 and heating elements 302. One end of the water pipe 301 is connected to a water pump 303, which draws cold water into the water pipe 301. The other end of the water pipe 301 is connected to a water outlet valve 304, through which heated hot water is output. The heating elements 302 are arranged at intervals, with a gap between each pair of heating elements 302. This design cleverly increases airflow, improves heat exchange efficiency, and avoids localized overheating caused by heat accumulation. The water pipe 301 runs through the heating elements 302, connecting them in series, allowing hot water to flow smoothly in the pipe and fully absorb the heat transferred by the heating elements.

[0036] An expansion tank 7 is installed on the side of the heat exchanger 3. The expansion tank 7 is connected to the water pipe 301. The expansion tank 7 plays a crucial role. During the operation of the water heater, the water in the pipes expands due to temperature changes. The expansion tank 7 can accommodate this expansion, preventing damage to the pipes due to excessive internal pressure and ensuring the safe and stable operation of the water system. Simultaneously, it also maintains a constant system pressure, keeping the pressure of the entire hot water circulation system within a stable range to ensure a normal supply of hot water. Furthermore, when the system needs water replenishment, the expansion tank can promptly provide a water source to maintain the system's normal water level.

[0037] An inner circulation shell 2 is also provided above the heat exchanger 3, and the inner circulation shell 2 is connected to the fan 1. An outer circulation shell 6 is also provided outside the gas assembly 4, the combustion insulation chamber 5, the heat exchanger 3, and the inner circulation shell 2.

[0038] The top of the external circulation housing 6 is provided with a top plate 603; the top plate 603 is provided with a gas inlet 6031, the air outlet of the fan 1 is connected to the gas inlet 6031, the air outlet of the fan 1 is smaller than the gas inlet 6031, so an air inlet channel is formed between the air outlet of the fan 1 and the gas inlet 6031.

[0039] Fan 1 draws hot air from the inner circulation shell 2 and discharges it through its outlet. External air enters the outer circulation shell 6 through the inlet channel and then flows into the combustion insulation chamber 5 from below the gas assembly 4. Fan 1 plays a crucial role by rapidly drawing hot air out of the combustion insulation chamber 5, creating a significant pressure difference within it. This causes the gas from the outer circulation shell 6 to quickly flow into the combustion insulation chamber 5. This fresh gas mixes thoroughly with the gas, greatly promoting complete combustion. Compared to traditional structures that use ducts for ventilation, this innovative method of using both inner and outer circulation chambers to ventilate the combustion insulation chamber 5 offers several significant advantages. First, it significantly increases airflow and accelerates ventilation, allowing for more complete combustion of the gas inside the combustion insulation chamber 5 while promptly and quickly removing exhaust gases. Second, during ventilation, it effectively removes excess heat generated during combustion, preventing a series of problems caused by heat accumulation. For example, it prevents metal components such as burners and heat exchangers from aging faster due to thermal fatigue, avoiding deformation, cracking, and other issues, thereby extending the service life of these critical components.

[0040] The external circulation housing 6 includes a back plate 601, with side plates 602 connected to both sides of the back plate 601 and a lower partition 604 connected to the middle of the back plate 601. The lower partition 604 plays an important role in isolation, effectively separating the gas assembly 4, combustion insulation chamber 5, heat exchanger 3, internal circulation housing 2 from other control components of the water heater, avoiding mutual interference between different components and ensuring the stable operation of the water heater.

[0041] The front panel 605 and control panel 606 are also provided in front of the back panel 601. The control panel 606 is an important interface for users to interact with the water heater. Various operation and control buttons are installed on it, so that users can operate and adjust the water heater according to their actual needs.

[0042] The partition components of the combustion insulation chamber employ a combined design of insulation panels, insulation layers, and air layers, effectively reducing heat loss, improving energy efficiency, and lowering operating costs. The insulation layer utilizes natural mineral materials such as asbestos and slag, which not only offer excellent insulation performance but are also lightweight and cost-effective. Furthermore, the raised rounded blocks on the insulation panels enhance the stability of the connection between the panels and the insulation layer, while also increasing the rigidity of the insulation panels to prevent them from collapsing under pressure, thus ensuring the long-term stability of the insulation structure.

[0043] Finally, it should be noted that the above are merely preferred embodiments of the utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the utility model should be included within the protection scope of the utility model.

Claims

1. A heating and insulation structure for a gas water heater, characterized in that, It includes a gas assembly (4), a combustion insulation chamber (5) is provided above the gas assembly (4), and a heat exchanger (3) is provided at the upper end of the combustion insulation chamber (5); The gas assembly (4) includes a gas valve (401) and a burner (402). The gas valve (401) is connected to the natural gas supply burner (402) for combustion. The combustion insulation chamber (5) provides a relatively enclosed space for the mixed combustion of gas and air. The combustion insulation chamber (5) is surrounded by partition components. The heat exchanger (3) is located within the space surrounded by the partition components. The partition components include insulation wall panels (501) and insulation layers (502). An air layer is also provided between the insulation wall panels (501) and the insulation layers (502).

2. The heating and insulation structure of a gas water heater according to claim 1, wherein The heat insulation wall panel (501) is provided with a convex round block, which protrudes towards the heat insulation layer (502), and the top of the convex round block abuts against the heat insulation layer (502).

3. The heating and insulation structure of a gas water heater according to claim 2, wherein The heat exchanger (3) includes a water pipe (301) and a heating element (302). One end of the water pipe (301) is connected to a water pump (303), which is used to pump water into the water pipe (301). The other end of the water pipe (301) is connected to a water outlet valve (304), which is used to output water heated by the water pipe (301).

4. The heating and insulation structure of a gas water heater according to claim 3, wherein The heating element (302) is provided in a plurality of parts, and a gap is provided between every two heating elements (302).

5. The heating and insulation structure of a gas water heater according to claim 4, wherein The water pipe (301) is inserted into the heating element (302), and the water pipe (301) connects several heating elements (302) together.

6. The heating and insulation structure of a gas water heater according to claim 5, wherein An expansion tank (7) is provided on the side of the heat exchanger (3), and the expansion tank (7) is connected to the water pipe (301).

7. The heating and heat insulation structure of the gas water heater according to any one of claims 1 to 6, characterized in that, An inner circulation shell (2) is also provided above the heat exchanger (3), and the inner circulation shell (2) is connected to the fan (1).

8. The heating and insulation structure of a gas water heater according to claim 7, wherein An outer circulation shell (6) is also provided outside the gas assembly (4), combustion insulation chamber (5), heat exchanger (3), and inner circulation shell (2).

9. The heating and insulation structure of a gas water heater according to claim 8, wherein The top of the external circulation housing (6) is provided with a top plate (603); the top plate (603) is provided with a gas inlet (6031), the air outlet of the fan (1) is connected to the gas inlet (6031), the air outlet of the fan (1) is smaller than the gas inlet (6031), so an air inlet channel is formed between the air outlet of the fan (1) and the gas inlet (6031); The blower (1) draws out the hot air from the inner circulation shell (2) and discharges it from the outlet of the blower (1). The outside air enters the outer circulation shell (6) through the air inlet channel and enters the combustion insulation chamber (5) from below the gas assembly (4).

10. The heating and insulation structure of a gas water heater according to claim 9, wherein The external circulation housing (6) includes a back plate (601), side plates (602) are connected to both sides of the back plate (601), and a lower partition (604) is connected to the middle of the back plate (601). The partition (604) isolates the gas assembly (4), combustion insulation chamber (5), heat exchanger (3), internal circulation housing (2) from other control components of the water heater. The back panel (601) is also provided with a front panel (605) and an operation panel (606) in front of it. The operation panel (606) is used to install operation control buttons.

Images