A gas heating system with air passage

Abstract

The utility model discloses a gas heating system of air passage composite, including composite air passage subassembly, composite air passage subassembly includes the air pipe of two layers of inside and outside coaxial arrangement and one layer is air inlet pipe, another layer is exhaust pipe, air inlet pipe is connected with combustion chamber, air inlet pipe is used for sucking the fresh air of outside into the combustion chamber and helping to burn, and the combustion chamber is equipped with the gas inlet hole for accessing the gas for burning, and the outlet of combustion chamber is connected with heat exchanger, and heat exchanger is used for heating the air in room to facilitate the promotion indoor temperature, and the end of heat exchanger is connected with air blower, and the air inlet of air blower is connected with the end of heat exchanger, and the air outlet is connected with exhaust pipe.

Description

Technical Field

[0001] This invention relates to a gas heating system, and more particularly to a gas heating system with a gas duct composite design. Background Technology

[0002] The design of the gas duct of a gas heating system, namely the air intake and exhaust structure, is a key factor affecting its safety, energy efficiency and installation compatibility. Currently, the common gas duct designs are divided into two types: unbalanced and balanced. However, both of these existing designs have their own shortcomings.

[0003] The main characteristic of unbalanced gas ducts is that they adopt an indoor air intake structure. In other words, gas heating systems using this type of gas duct draw air directly from the indoor environment where the equipment is located during combustion. This continuously consumes indoor oxygen during combustion, causing a sharp drop in oxygen concentration in a closed room during winter, which can easily lead to oxygen deficiency and discomfort in the human body.

[0004] Balanced duct systems, on the other hand, use outdoor air intake and exhaust. Gas heating systems employing this type of duct often require two separate pipes for intake and exhaust, necessitating two holes in the wall during installation. This results in greater structural damage and requires more wall space. Furthermore, due to the outdoor intake design, the intake air temperature is significantly lower than that of indoor intake air in winter when outdoor temperatures are low. Consequently, a large amount of energy is wasted during the initial heating process, leading to reduced final thermal efficiency.

[0005] Therefore, overcoming the aforementioned shortcomings has become an important issue that urgently needs to be addressed by those skilled in the art. Utility Model Content

[0006] This invention overcomes the shortcomings of the above-mentioned technologies and provides a gas heating system with gas duct composite.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A gas heating system with a composite gas duct includes a composite gas duct assembly 1. The composite gas duct assembly 1 includes two coaxial ventilation pipes extending outdoors, one of which is an air intake pipe and the other is an exhaust pipe. The air intake pipe is connected to a combustion chamber 2, which is used to draw in fresh outside air into the combustion chamber 2 to aid combustion. The combustion chamber 2 is also provided with a gas inlet 21 for receiving gas for combustion. The outlet of the combustion chamber 2 is connected to a heat exchanger 3, which is used to heat the air in the room to increase the indoor temperature. The end of the heat exchanger 3 is connected to a blower 4, the air inlet of which is connected to the end of the heat exchanger 3, and the air outlet of the blower 4 is connected to the exhaust pipe.

[0008] Preferably, the composite air duct assembly 1 includes a first pipe 11 and a composite air chamber 12. The first pipe 11 passes through the composite air chamber 12 vertically. The lower wall of the composite air chamber 12 is sealed and fixed to the outer wall of the first pipe 11. A second pipe 13 is provided on the upper wall of the composite air chamber 12, sleeved on the upper part of the first pipe 11 and coaxially arranged with the first pipe 11. The lower end of the second pipe 13 is connected to the composite air chamber 12. The composite air chamber 12 is also provided with a vent 121. When the lower end of the first pipe 11 is connected to the combustion chamber 2, the first pipe 11 serves as an intake pipe; when it is connected to the blower 4, the first pipe 11 serves as an exhaust pipe. When the vent 121 is connected to the combustion chamber 2, the composite air chamber 12 and the second pipe 13 together serve as an intake pipe; when it is connected to the blower 4, the composite air chamber 12 and the second pipe 13 together serve as an exhaust pipe.

[0009] Preferably, the inner ventilation pipe of the composite airway assembly 1 is an exhaust pipe, and the outer ventilation pipe is an intake pipe.

[0010] Preferably, the composite airway assembly 1 further includes a plurality of support members 14 circumferentially distributed on the outer wall surface of the first pipe 11 near the outside, the support members 14 being used to abut against the outer wall surface of the first pipe 11 and the inner wall surface of the second pipe 13.

[0011] Preferably, the gas heating system of this invention also includes a cooling fan 5, which is used to blow air onto the heat exchanger 3 so as to blow hot air near the heat exchanger 3 into the room.

[0012] Preferably, the heat exchanger 3 includes a plurality of heat dissipation pipes 31 distributed vertically. One end of each heat dissipation pipe 31 is connected to the combustion chamber 2 and the other end is connected to the air inlet of the blower 4. Each heat dissipation pipe 31 includes a transition section 311 connected to the combustion chamber 2. The end of the transition section 311 is connected to two heat dissipation sections 312 distributed vertically. The heat dissipation sections 312 extend horizontally and have multiple U-shaped bends to increase their length. The end of the heat dissipation section 312 is connected to the air inlet of the blower 4. The diameter of the heat dissipation section 312 is smaller than the diameter of the transition section 311.

[0013] Preferably, the combustion chamber 2 is provided with a number of horizontally arranged and vertically distributed burner heads 22, the number of burner heads 22 being the same as the number of heat dissipation pipes 31 and their positions corresponding one-to-one.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This gas heating system integrates the intake and exhaust pipes into a single composite gas duct assembly. The intake and exhaust pipes are coaxially aligned and extend outdoors, thus eliminating the risk of indoor oxygen deficiency caused by drawing gas from indoors, ensuring safety during heating in a closed environment. Furthermore, the coaxial, layered design of the intake and exhaust pipes combines two previously separate pipes, requiring only one opening in the wall during installation, significantly reducing structural damage and wall space requirements, and improving product compatibility. Additionally, the coaxial, layered arrangement of the intake and exhaust pipes in the composite assembly allows the exhaust gas, carrying residual heat, to preheat the fresh air in the intake pipe, thereby improving the system's thermal efficiency. Attached Figure Description

[0015] Figure 1 This is one of the schematic diagrams of the gas heating system in this case.

[0016] Figure 2 This is the second schematic diagram of the gas heating system in this case.

[0017] Figure 3 This is a schematic diagram of the explosion of the gas heating system in this case.

[0018] Figure 4 This is a schematic diagram of the composite airway assembly in this case.

[0019] Figure 5 This is a cross-sectional schematic diagram of the composite airway assembly in this case, where two sets of solid lines with arrows represent two airways.

[0020] Figure 6 This is a schematic diagram of the heat pipes in this case.

[0021] Figure 7 This is a schematic diagram of the combustion chamber in this case. Detailed Implementation

[0022] The following examples further illustrate the features and other related characteristics of the present invention in detail, to facilitate understanding by those skilled in the art: like Figures 1 to 5As shown, a gas heating system with a composite gas duct includes a composite gas duct assembly 1. The composite gas duct assembly 1 includes two coaxial ventilation pipes extending outdoors, one of which is an intake pipe and the other is an exhaust pipe. The intake pipe is connected to a combustion chamber 2, which is used to draw in fresh air from the outside into the combustion chamber 2 to aid combustion. The combustion chamber 2 is also provided with a gas inlet 21 for receiving gas for combustion. The outlet of the combustion chamber 2 is connected to a heat exchanger 3, which is used to heat the air in the room to increase the indoor temperature. The end of the heat exchanger 3 is connected to a blower 4, the air inlet of which is connected to the end of the heat exchanger 3, and the air outlet of the blower 4 is connected to the exhaust pipe.

[0023] The gas heating system in this case includes a composite gas duct assembly 1, a combustion chamber 2, a heat exchanger 3, and a blower 4. The intake and exhaust pipes are integrated into the composite gas duct assembly 1, which comprises two coaxially arranged ventilation ducts extending outdoors, one serving as the intake pipe and the other as the exhaust pipe. The combustion chamber 2, heat exchanger 3, and blower 4 are sequentially connected between the intake and exhaust pipes. When the gas heating system is working, fresh air enters the combustion chamber 2 through the air intake pipe, and gas is introduced into the combustion chamber 2 through the gas inlet 21. The gas and air mix and burn in the combustion chamber 2 to generate heat. The high-temperature exhaust gas produced by combustion in the combustion chamber 2 enters the heat exchanger 3. The outer wall of the heat exchanger 3 is in direct contact with the indoor air. After the high-temperature exhaust gas enters the heat exchanger 3, it exchanges heat with the indoor air through the heat exchanger 3, thereby heating the indoor air and achieving the function of heating. At the same time, the blower 4 at the end of the heat exchanger 3 will also work to draw out the high-temperature exhaust gas in the heat exchanger 3 and discharge it through the exhaust pipe, thereby accelerating the gas flow in the gas heating system.

[0024] As described above, the gas heating system in this case integrates the intake and exhaust pipes through the composite gas duct component 1. The intake and exhaust pipes are coaxially positioned and extend outdoors, thus fundamentally avoiding the risk of indoor oxygen deficiency caused by drawing gas from indoors, thereby ensuring the safety of heating in a closed indoor environment. Furthermore, the coaxial, layered intake and exhaust pipes integrate what were originally two separate pipes, requiring only one opening in the wall during installation instead of two. This significantly reduces damage to the building and wall space requirements, improving the product's installation adaptability. Simultaneously, because the intake and exhaust pipes in the composite gas duct component 1 are coaxially layered, the exhaust gas carrying residual heat can preheat the fresh air in the intake pipe, thereby improving the system's thermal efficiency.

[0025] like Figures 1 to 5As shown, preferably, the composite air duct assembly 1 includes a first pipe 11 and a composite air chamber 12. The first pipe 11 passes through the composite air chamber 12 vertically. The lower wall of the composite air chamber 12 is sealed and fixed to the outer wall of the first pipe 11. A second pipe 13 is provided on the upper wall of the composite air chamber 12, sleeved on the upper part of the first pipe 11 and coaxially arranged with the first pipe 11. The lower end of the second pipe 13 is connected to the composite air chamber 12. The composite air chamber 12 is also provided with a vent 121. When the lower end of the first pipe 11 is connected to the combustion chamber 2, the first pipe 11 serves as an intake pipe; when it is connected to the blower 4, the first pipe 11 serves as an exhaust pipe. When the vent 121 is connected to the combustion chamber 2, the composite air chamber 12 and the second pipe 13 together serve as an intake pipe; when it is connected to the blower 4, the composite air chamber 12 and the second pipe 13 together serve as an exhaust pipe.

[0026] As described above, the composite air duct assembly 1 of this case includes a first pipe 11, a composite air chamber 12, and a second pipe 13. The first pipe 11 passes through the composite air chamber 12, and the lower wall of the composite air chamber 12 is sealed and fixed to the outer wall of the first pipe 11. The upper wall is provided with a second pipe 13 coaxially sleeved on the first pipe 11, and the lower end of the second pipe 13 is connected to the composite air chamber 12. In this way, the composite air chamber 12 and the second pipe 13 together form an outer air duct that wraps around the first pipe 11, while the first pipe 11 serves as an inner air duct. Thus, the composite air duct assembly 1 constructs a coaxially layered intake and exhaust structure, which can reduce the number of openings in the wall and preheat the incoming air by preheating the exhaust gas. Meanwhile, the composite air chamber 12 is also provided with an air vent 121. If the lower end of the first pipe 11 is connected to the combustion chamber 2, then the air vent 121 is connected to the blower 4. Accordingly, the first pipe 11 serves as the intake pipe, and the composite air chamber 12 and the second pipe 13 serve as the exhaust pipe. Conversely, if the lower end of the first pipe 11 is connected to the blower 4 and the air vent 121 is connected to the combustion chamber 2, then the first pipe 11 serves as the exhaust pipe, and the composite air chamber 12 and the second pipe 13 serve as the intake pipe.

[0027] like Figures 1 to 5 , Figure 7 As shown, preferably, the inner ventilation pipe of the composite air duct assembly 1 is an exhaust pipe and the outer ventilation pipe is an intake pipe. In this way, it can be avoided that the exhaust gas will surround the opening of the inner pipe after being discharged from the outer pipe, causing fresh air to be blocked by the exhaust gas and unable to enter the inner pipe, thus affecting the intake efficiency.

[0028] Specifically, the lower end of the first pipe 11 is connected to the air outlet of the blower 4, and the air vent 121 is connected to the combustion chamber 2.

[0029] like Figure 1 , Figure 4 and Figure 5 As shown, preferably, the composite airway assembly 1 further includes a plurality of support members 14 circumferentially distributed on the outer wall surface of the first pipe 11 near the outside, the support members 14 being used to abut against the outer wall surface of the first pipe 11 and the inner wall surface of the second pipe 13.

[0030] As described above, the composite air duct assembly 1 of this case also includes a support member 14. By circumferentially setting the support member 14 on the outer wall of the first pipe 11 and abutting between the first pipe 11 and the second pipe 13, the coaxiality of the two pipes can be effectively guaranteed. This avoids the first pipe 11 from becoming skewed or deformed due to free shaking during installation or use, which would lead to uneven pipe gaps and affect the smoothness of airflow. In this way, by setting the support member 14, the stability of the ventilation duct can be effectively guaranteed, ensuring the smooth and efficient intake and exhaust process.

[0031] like Figures 1 to 3 As shown, preferably, the gas heating system of this invention also includes a cooling fan 5, which is used to blow air onto the heat exchanger 3 so as to blow hot air near the heat exchanger 3 into the room.

[0032] As described above, the gas heating system in this case, by actively blowing air onto the heat exchanger 3 using the radiator fan 5, can accelerate the airflow around the heat exchanger 3, allowing the heat generated by the heat exchange to be quickly and evenly diffused to other areas of the room. This improves the efficiency and uniformity of indoor temperature rise, thereby enhancing the heating effect. Simultaneously, continuous airflow circulation also prevents heat buildup near the heat exchanger 3 from causing localized overheating, ensuring that the heat generated by combustion is more fully transferred to the indoor air, reducing heat waste.

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, preferably, the heat exchanger 3 includes several heat dissipation pipes 31 distributed vertically. One end of each heat dissipation pipe 31 is connected to the combustion chamber 2, and the other end is connected to the air inlet of the blower 4. Each heat dissipation pipe 31 includes a transition section 311 connected to the combustion chamber 2. The end of the transition section 311 is connected to two heat dissipation sections 312 distributed vertically. The heat dissipation sections 312 extend horizontally and have multiple U-shaped bends to increase their length. The end of the heat dissipation section 312 is connected to the air inlet of the blower 4. The diameter of the heat dissipation section 312 is smaller than the diameter of the transition section 311.

[0034] As described above, the heat exchanger 3 of this invention includes several heat dissipation pipes 31, each of which includes a transition section 311 and a heat dissipation section 312. The heat dissipation section 312 has two sections, one above the other, located at the end of the transition section 311. The diameter of the heat dissipation section 312 is smaller than the diameter of the transition section 311. This allows the larger-diameter transition section 311 to directly connect with the combustion chamber 2, acting as an extension of the combustion chamber 2 and ensuring complete combustion of the gas. The end of the transition section 311 is split into two smaller-diameter pipes by the heat dissipation section 312, thereby increasing the contact area between the heat dissipation pipe 31 and the indoor air and improving heat exchange efficiency. Simultaneously, the heat dissipation section 312 also has multiple U-shaped bends, which can extend the length of the heat dissipation pipe 31 within a certain space, prolonging the residence time of the high-temperature gas after combustion within the heat dissipation pipe 31 and fully releasing and transferring heat to the indoor air, thereby reducing energy waste.

[0035] like Figure 7 As shown, preferably, the combustion chamber 2 is provided with a number of horizontally arranged burners 22 distributed vertically. The number of burners 22 is the same as the number of heat dissipation pipes 31 and their positions correspond one-to-one. In this way, the high-temperature gas generated by the combustion of each burner 22 can accurately enter the corresponding heat dissipation pipe 31. At the same time, the horizontally arranged burners 22 and the horizontally arranged heat dissipation pipes 31 are in the same direction, which can effectively reduce the exhaust resistance and make it easier for the high-temperature gas to enter the heat exchanger 3 for heat exchange.

[0036] As stated above, this case protects a gas heating system with a gas duct composite structure, and all technical solutions that are the same as or similar to this case should be considered to fall within the scope of protection of this case.

Claims

1. A gas heating system with combined gas ducts, characterized in that... The system includes a composite air duct assembly (1), which includes two coaxial ventilation ducts extending outdoors, one of which is an intake duct and the other is an exhaust duct. The intake duct is connected to a combustion chamber (2) and is used to draw fresh air from the outside into the combustion chamber (2) to aid combustion. The combustion chamber (2) is also provided with a gas inlet (21) for connecting the gas for combustion. The outlet of the combustion chamber (2) is connected to a heat exchanger (3) and is used to heat the air in the room to increase the room temperature. The end of the heat exchanger (3) is connected to a blower (4). The air inlet of the blower (4) is connected to the end of the heat exchanger (3), and the air outlet is connected to the exhaust duct.

2. The gas heating system with gas duct composite according to claim 1, characterized in that... The composite airway assembly (1) includes a first pipe (11) and a composite air chamber (12). The first pipe (11) passes through the composite air chamber (12) vertically. The lower wall of the composite air chamber (12) is sealed and fixed to the outer wall of the first pipe (11). A second pipe (13) is provided on the upper wall of the composite air chamber (12), which is sleeved on the upper part of the first pipe (11) and coaxially arranged with the first pipe (11). The lower end of the second pipe (13) is connected to the composite air chamber (12). The composite air chamber (12) is also provided with an air inlet (121). If the lower end of the first pipe (11) is connected to the combustion chamber (2), the first pipe (11) serves as an air intake pipe; or if it is connected to the blower (4), the first pipe (11) serves as an exhaust pipe. If the air inlet (121) is connected to the combustion chamber (2), the composite air chamber (12) and the second pipe (13) together serve as an air intake pipe; or if it is connected to the blower (4), the composite air chamber (12) and the second pipe (13) together serve as an exhaust pipe.

3. A gas heating system with gas duct composite according to any one of claims 1 or 2, characterized in that... The inner air passage of the composite air passage assembly (1) is an exhaust pipe, and the outer air passage is an intake pipe.

4. A gas heating system with gas duct composite according to claim 2, characterized in that... The composite airway assembly (1) further includes a plurality of support members (14) arranged circumferentially on the outer wall of the first pipe (11) near the outside, the support members (14) being used to abut against the outer wall of the first pipe (11) and the inner wall of the second pipe (13).

5. A gas heating system with gas duct composite according to claim 1, characterized in that... It also includes a cooling fan (5) for blowing air onto the heat exchanger (3) to blow hot air near the heat exchanger (3) into the room.

6. A gas heating system with gas duct composite according to any one of claims 1 or 5, characterized in that... The heat exchanger (3) includes several heat dissipation pipes (31) distributed vertically. One end of the heat dissipation pipe (31) is connected to the combustion chamber (2) and the other end is connected to the air inlet of the blower (4). The heat dissipation pipe (31) includes a transition section (311) connected to the combustion chamber (2). The end of the transition section (311) is connected to two heat dissipation sections (312) distributed vertically. The heat dissipation section (312) extends horizontally and has multiple U-shaped bends to increase its length. The end of the heat dissipation section (312) is connected to the air inlet of the blower (4). The diameter of the heat dissipation section (312) is smaller than the diameter of the transition section (311).

7. A gas heating system with gas duct composite according to claim 6, characterized in that... The combustion chamber (2) is provided with several horizontally arranged and vertically distributed burner heads (22). The number of burner heads (22) is the same as the number of heat dissipation pipes (31) and their positions correspond one-to-one.

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