Combustion chamber set for updraft gas water heater

Abstract

The utility model provides a group of combustion chamber for upper drawing type gas water heater, including the combustion chamber casing of hollow structure, the even multiple groups of installation groove of being equipped with on two opposite inner sides of combustion chamber casing, every two two opposite installation groove is equipped with the fire row in, and the air inlet between multiple groups of fire row is connected through gas distribution pipe, and the combustion chamber casing bottom end corresponds gas distribution pipe and is equipped with gas air inlet pipe, and one end of gas air inlet pipe is connected with gas distribution pipe, and the one end away from combustion chamber casing of air inlet pipe is connected with gas valve, the air inlet pipe of combustion chamber casing both ends is equipped with the air inlet pipe for air inlet and the folding plate for connecting heat exchanger, and one side of combustion chamber casing is equipped with electronic igniter, and the ignition end of electronic igniter is arranged in combustion chamber casing. The gas mixing and combustion of gas distribution spare, comb flow grid net etc. are optimized, and the heat loss is reduced by heat insulation layer and ceramic coating, the thermal efficiency is improved, and the gas cost is reduced while guaranteeing the fatigue resistance and life.

Description

Technical Field

[0001] This utility model belongs to the field of gas water heater technology, and more specifically, it relates to a combustion chamber assembly for a top-extraction gas water heater. Background Technology

[0002] The combustion chamber assembly of a gas water heater is one of the components of the water heater. It mixes gas and air in the appropriate proportion, ignites and burns stably, generating heat that is transferred to the heat exchanger to heat the water. By controlling the gas flow, the heat output can be adjusted to meet different water temperature requirements. At the same time, safety devices ensure safe use, ensuring that the gas water heater can operate efficiently, stably and safely.

[0003] During the frequent start-up and shutdown of a gas water heater, the combustion chamber constantly undergoes temperature and pressure changes. Traditional gas water heaters mostly use copper for their combustion chambers. Copper has low metal fatigue resistance, and long-term cyclic ignition can easily cause cracks, which in turn affects the use of the water heater. Therefore, the copper material can be replaced with stainless steel, which has higher metal fatigue resistance, to avoid this problem.

[0004] The low thermal conductivity of stainless steel combustion chambers results in slower heat transfer, which takes longer to heat the same amount of water to a specified temperature. This increases gas consumption, leading to higher costs and reduced practicality of the water heater. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a combustion chamber assembly for a top-extraction gas water heater, thereby solving the technical problem in the prior art where the stainless steel combustion chamber assembly has a low thermal conductivity, resulting in slow heat transfer, longer heating time to a specified temperature for the same amount of water, increased gas consumption and costs, and reduced practicality of the water heater.

[0006] The purpose and effect of the combustion chamber assembly for the top-extraction gas water heater of this utility model are achieved by the following specific technical means:

[0007] A combustion chamber assembly for a top-extraction gas water heater includes a hollow combustion chamber shell. Multiple sets of mounting slots are evenly arranged on two opposite inner surfaces of the combustion chamber shell. Each pair of opposite mounting slots contains a burner, and the air inlets of the multiple burners are connected by a gas distribution pipe. A gas inlet pipe is located at the bottom of the combustion chamber shell corresponding to the gas distribution pipe. One end of the gas inlet pipe is connected to the gas distribution pipe, and the end of the inlet pipe away from the combustion chamber shell is connected to a gas valve. Air inlet pipes for air intake and baffles for connecting a heat exchanger are respectively provided at both ends of the combustion chamber shell. An electronic igniter is located on one side of the combustion chamber shell, with its ignition end penetrating inside the combustion chamber shell.

[0008] The above technical solution further includes that the top of each of the multiple sets of burners is replaced with a gas distribution component for uniformly distributing the gas, and the two ends of the gas distribution component are respectively locked in the two opposite mounting slots inside the combustion chamber shell.

[0009] The above technical solution further includes that a combing grid with a mesh structure is fixedly connected inside the air inlet pipe, and a filter plate is also installed inside the air inlet pipe at the bottom end of the combing grid, and the filter plate is connected to the combing grid.

[0010] The above technical solution further includes that air injection holes are also provided through the two opposite outer surfaces of the combustion chamber shell, and the air injection holes are provided corresponding to multiple sets of the burner.

[0011] The above technical solution further includes that a heat insulation layer made of glass fiber is provided on the combustion chamber shell at the bottom end of the air injection hole.

[0012] The above technical solution further includes that a sealing gasket is also provided inside the combustion chamber shell at the top of the multiple sets of mounting slots. When the combustion chamber shell is installed with the heat exchanger, the two ends of the sealing gasket are in contact with the combustion chamber shell and the heat exchanger, respectively.

[0013] The above technical solution further includes that the combustion chamber shell and the sealing gasket are both made of stainless steel sheet metal, and the inner side of the combustion chamber shell is uniformly coated with a ceramic coating.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The gas distribution system evenly distributes the combustion gas, while the combing grille and filter plates ensure more uniform air intake, improving the mixing efficiency of gas and air and promoting complete combustion. The air supply vents replenish the air needed for combustion, further optimizing combustion and reducing gas consumption. Simultaneously, the fiberglass insulation layer on the outer surface of the combustion chamber shell reduces heat loss and improves heat utilization, while the ceramic coating enhances high-temperature resistance and reduces heat loss during transfer. These structural features work together to improve heat utilization efficiency and reduce gas usage costs while ensuring fatigue resistance and service life.

[0016] 2. The combustion chamber shell is made of stainless steel sheet metal, with a fiberglass insulation layer on the outer surface to reduce heat loss and improve heat utilization. The snap-fit ​​structure between the mounting slot and the burner and gas distributor facilitates assembly and maintenance, reducing future repair costs. The folding plate and sealing gasket connecting the combustion chamber shell to the heat exchanger ensure sealing performance, prevent flue gas leakage, and improve safety. The coordination between the gas distribution pipe, gas inlet pipe, and gas valve enables gas flow control to meet different heating needs, ensuring stable operation of the overall structure and improving the reliability of the water heater. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the assembled structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the exploded structure from a low angle, representing the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the burner and gas distribution pipe of this utility model.

[0020] Figure 4 This is a top view of the combustion chamber shell of this utility model.

[0021] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0022] 1. Combustion chamber shell; 2. Burner; 3. Gas valve; 4. Electronic igniter; 101. Gas distribution pipe; 102. Air inlet pipe; 103. Baffle plate; 201. Gas distribution component; 301. Comb grid; 302. Filter plate; 401. Air inlet hole; 501. Heat insulation layer; 601. Sealing gasket. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solution of this utility model, but should not be used to limit the scope of protection of this utility model.

[0024] Example:

[0025] like Figures 1 to 4 As shown, this utility model provides a combustion chamber assembly for a top-extraction gas water heater, including a hollow combustion chamber shell 1. Multiple sets of mounting slots are evenly arranged on two opposite inner surfaces of the combustion chamber shell 1. Each pair of opposite mounting slots houses a burner 2, and the air inlets of the multiple sets of burner 2 are connected by a gas distribution pipe 101. A gas inlet pipe is provided at the bottom of the combustion chamber shell 1 corresponding to the gas distribution pipe 101, with one end connected to the gas distribution pipe 101 and the other end of the inlet pipe away from the combustion chamber shell 1 connected to a gas valve 3. Air inlet pipes 102 for air intake and baffles 103 for connecting a heat exchanger are respectively provided at both ends of the combustion chamber shell 1. An electronic igniter 4 is provided on one side of the combustion chamber shell 1, with the ignition end of the electronic igniter 4 penetrating inside the combustion chamber shell 1. The combustion chamber shell 1 has multiple sets of mounting slots, with the burner 2 passing through each pair of opposite mounting slots to achieve stable assembly of the burner 2. The gas inlet of burner 2 is connected to the gas distribution pipe 101. The gas inlet pipe is set corresponding to the gas distribution pipe 101, with one end connected and the other end connected to the gas valve 3, forming a gas delivery path. Gas flows through the gas inlet pipe to the gas distribution pipe 101, and then to each burner 2, ensuring an orderly gas supply.

[0026] The combustion chamber shell 1 has an air inlet pipe 102 and a baffle plate 103 at both ends. The air inlet pipe 102 provides an air intake channel to meet the oxygen requirements of combustion. The baffle plate 103 is used to connect to the heat exchanger, providing a structural foundation for heat transfer, allowing the heat generated by combustion to be transferred to the heat exchanger. An electronic igniter 4 is installed on one side of the combustion chamber shell 1, with its ignition end penetrating into the shell. The ignition end acts directly on the combustion zone, which can ignite the gas-air mixture in a timely manner, ensuring reliable combustion start-up and providing initial conditions for continuous combustion.

[0027] The entire device is controlled by an external control module, and the layout of each component forms a complete combustion system. The mounting slot fixes the burner 2, the gas distribution pipe 101 works in conjunction with the gas inlet pipe and gas valve 3 to control the gas supply, the air inlet pipe 102 ensures air input, the electronic igniter 4 is responsible for ignition, and the baffle plate 103 connects to the heat exchanger. The cooperation of each part ensures that the gas combustion and heat transfer processes are carried out continuously, ensuring the stable operation of the combustion chamber.

[0028] like Figure 1 and Figure 3 As shown, each of the multiple burner groups 2 is equipped with a gas distributor 201 at its top for evenly distributing the gas. The two ends of the gas distributor 201 are respectively secured in two opposing mounting slots within the combustion chamber housing 1. The gas distributor 201 achieves even gas distribution, ensuring consistent gas supply to the multiple burner groups 2, guaranteeing uniform combustion, and preventing localized combustion abnormalities. The gas distributor 201's two ends being secured in opposing mounting slots within the combustion chamber housing 1 replaces the original top-mounted configuration of the burner groups 2, simplifying the assembly process and facilitating installation and replacement.

[0029] The mounting slot fixes the gas distributor 201, ensuring stable position, reducing displacement during operation, maintaining gas distribution accuracy, and ensuring continuous and stable operation of the combustion system. The gas distributor 201 and the mounting slot cooperate to form a unified fixed structure, enhancing the overall connection reliability and improving the structural stability of the combustion chamber.

[0030] like Figure 2 As shown, a combing grid 301 with a mesh structure is fixedly connected inside the air inlet duct 102, and a filter plate 302 is also installed inside the air inlet duct 102 at the bottom end of the combing grid 301, connected to the combing grid 301. The combing grid 301, with its mesh structure, is fixed inside the air inlet duct 102 and can comb the incoming air, making the airflow more uniform, avoiding local airflow turbulence, and providing stable airflow conditions for the mixing of gas and air. The filter plate 302, installed inside the air inlet duct 102 at the bottom end of the combing grid 301, can filter the incoming air, intercepting impurities in the air and preventing impurities from entering the combustion chamber and affecting the normal operation of the combustion components.

[0031] Meanwhile, the filter plate 302 is connected to the combing grid 301 to form a combined structure, which further optimizes the air flow state while filtering impurities, and improves the quality and stability of the air entering the combustion chamber. The combing grid 301 and the filter plate 302 are both set inside the air inlet pipe 102 and cooperate with the air inlet pipe 102 to form a complete air intake treatment system, ensuring that the air entering the combustion chamber is clean and flows evenly, providing support for combustion.

[0032] like Figure 1 , Figure 2 and Figure 4 As shown, air supply holes 401 are also provided through the two opposite outer surfaces of the combustion chamber shell 1, and the air supply holes 401 are opened corresponding to multiple sets of burners 2; a heat insulation layer 501 made of glass fiber is also provided on the combustion chamber shell 1 at the bottom of the air supply holes 401. The air supply holes 401 are provided through the outer surface of the combustion chamber shell 1 and correspond to multiple sets of burners 2, which can supplement air to the burner 2 area to meet the continuous oxygen demand during combustion, ensure complete combustion of gas, and maintain a stable combustion state; the opening position of the air supply holes 401 corresponds to the burners 2, so that the supplemented air can reach the combustion area, improve air utilization, reduce unnecessary air circulation, and ensure combustion efficiency.

[0033] A glass fiber insulation layer 501 is installed at the bottom of the air inlet 401. This layer can block the heat transfer from the inside of the combustion chamber to the outside, reduce heat loss, concentrate heat for heating, and improve energy utilization efficiency. The heat insulation layer 501 is made of glass fiber and is installed on the combustion chamber shell 1. It can reduce the temperature of the outer surface of the shell and prevent the surrounding components from being affected by the excessive temperature of the shell, thus ensuring the safe operation of the overall structure.

[0034] like Figure 1 As shown, a sealing gasket 601 is also installed inside the combustion chamber shell 1 at the top of the multiple mounting slots. When the combustion chamber shell 1 is installed with the heat exchanger, both ends of the sealing gasket 601 contact the combustion chamber shell 1 and the heat exchanger respectively. Both the combustion chamber shell 1 and the sealing gasket 601 are made of stainless steel sheet metal, and the inner surface of the combustion chamber shell 1 is uniformly coated with a ceramic coating. The sealing gasket 601 installed at the top of the mounting slot, when the combustion chamber shell 1 is installed with the heat exchanger, the two ends of the sealing gasket 601 contact both of them respectively, which can fill the connection gap, prevent flue gas leakage, ensure that the exhaust gas generated by combustion is discharged along the preset path, and avoid leakage affecting the performance of components or causing safety hazards.

[0035] The combustion chamber housing 1 is made of stainless steel sheet metal, which has strong fatigue resistance and can withstand the temperature and pressure changes caused by frequent start-up and shutdown, reducing crack formation, extending service life, and ensuring long-term structural stability. The sealing gasket 601 is made of stainless steel sheet metal, which is the same material as the combustion chamber housing 1. It can adapt to the same working environment, has the same high temperature resistance and corrosion resistance, and ensures that the sealing performance does not degrade during long-term use.

[0036] The inner surface of the combustion chamber shell 1 is coated with a ceramic coating. The ceramic coating has excellent high-temperature resistance and can withstand the high temperature generated by combustion, protecting the inner surface of the shell from direct corrosion by high temperature. At the same time, it reduces heat loss during the heat transfer process to the outside of the shell and improves heat utilization efficiency. The sealing gasket 601, together with the stainless steel shell and the ceramic coating, forms multiple protections, which not only ensures the connection sealing, but also enhances the weather resistance and heat resistance of the structure, making the overall performance of the combustion chamber assembly more stable and reliable when working in conjunction with the heat exchanger.

[0037] The above description is merely an embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A combustion chamber assembly for a top-extraction gas water heater, comprising a combustion chamber shell (1) with a hollow structure, characterized in that: Multiple sets of mounting slots are evenly arranged on the two opposite inner surfaces of the combustion chamber housing (1). Each pair of opposite mounting slots is provided with a burner (2). The air inlets of the multiple sets of burners (2) are connected by a gas distribution pipe (101). A gas inlet pipe is provided at the bottom of the combustion chamber housing (1) corresponding to the gas distribution pipe (101). One end of the gas inlet pipe is connected to the gas distribution pipe (101), and the end of the inlet pipe away from the combustion chamber housing (1) is connected to a gas valve (3). An air inlet pipe (102) for air intake and a baffle plate (103) for connecting a heat exchanger are respectively provided at both ends of the combustion chamber housing (1). An electronic igniter (4) is provided on one side of the combustion chamber housing (1). The ignition end of the electronic igniter (4) is inserted into the combustion chamber housing (1).

2. The combustion chamber assembly for a top-extraction gas water heater according to claim 1, characterized in that: Each of the multiple sets of burners (2) is equipped with a gas distributor (201) for uniformly distributing the gas. The two ends of the gas distributor (201) are respectively locked in the two opposite mounting slots inside the combustion chamber housing (1).

3. The combustion chamber assembly for a top-extraction gas water heater according to claim 2, characterized in that: A comb grid mesh (301) with a mesh structure is fixedly connected inside the air inlet pipe (102), and a filter plate (302) is also installed inside the air inlet pipe (102) at the bottom end of the comb grid mesh (301), and the filter plate (302) is connected to the comb grid mesh (301).

4. The combustion chamber assembly for a top-extraction gas water heater according to claim 3, characterized in that: The combustion chamber shell (1) is provided with air inlet holes (401) on its two opposite outer surfaces, and the air inlet holes (401) are provided for multiple sets of the burner bars (2).

5. The combustion chamber assembly for a top-extraction gas water heater according to claim 4, characterized in that: A heat insulation layer (501) made of glass fiber is also provided on the combustion chamber shell (1) at the bottom of the air inlet (401).

6. The combustion chamber assembly for a top-extraction gas water heater according to claim 1, characterized in that: A sealing gasket (601) is inserted inside the combustion chamber housing (1) at the top of the multiple sets of mounting slots. When the combustion chamber housing (1) is installed with the heat exchanger, the two ends of the sealing gasket (601) are in contact with the combustion chamber housing (1) and the heat exchanger, respectively.

7. The combustion chamber assembly for a top-extraction gas water heater according to claim 6, characterized in that: The combustion chamber housing (1) and the sealing gasket (601) are both made of stainless steel sheet metal, and the inner side of the combustion chamber housing (1) is uniformly coated with a ceramic coating.

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