A windproof system for a natural ventilation vehicle water heater

Abstract

A windproof system for a natural draft vehicle-mounted water heater includes components such as a panel, base frame, hot water tank, fume hood assembly, isolation baffle, gas ejector assembly pipe, pressure regulating valve assembly, and sealing strips. When the vehicle is in motion or in windy conditions, the system directs airflow through the sealed assembly of the panel and base frame. Simultaneously, the fume hood assembly diverts and regulates the airflow, and the isolation baffle acts as a flow barrier, ultimately achieving pressure balance between the U-shaped air inlet and outlet of the hot water tank, ensuring the water heater remains in normal combustion mode. This design offers advantages such as good windproof performance, relatively independent air intake and exhaust, and minimal impact of the combustion process on electrical components and non-high-temperature resistant parts.

Description

Technical Field

[0001] This invention relates to the field of wind protection for vehicle-mounted water heaters, and in particular to a wind protection system for a natural ventilation vehicle-mounted water heater. Background Technology

[0002] Existing vehicle-mounted water heaters generally consist of three main types: electric water heaters, gas water heaters, and combined gas and electric water heaters. During use, vehicle power supplies are typically low-voltage, limiting the usability of electric water heaters to specific locations where charging is convenient. The other two types are not subject to this limitation. Furthermore, compared to electric and combined gas-electric water heaters, gas water heaters, which rely solely on gas combustion and heat release, are more susceptible to the influence of ambient wind during the combustion process. Therefore, gas water heaters require higher wind resistance and a more robust windproof design. The wind generated during vehicle movement further exacerbates the impact on combustion, necessitating even stronger wind protection measures. Gas-fired water heaters are mainly classified into forced exhaust water heaters and natural exhaust water heaters according to their exhaust method. Existing gas-fired water heaters used in vehicles mainly use natural exhaust to exhaust the heated flue gas. However, in the current technology, there are very few systematic designs for windproof structures for the above-mentioned natural exhaust process. Summary of the Invention

[0003] The purpose of this invention is to provide a windproof system for a natural exhaust vehicle water heater that has good windproof effect, relatively independent air intake and smoke exhaust, and minimal impact of the combustion process on electrical components and non-high temperature resistant components.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a windproof system for a natural exhaust type vehicle-mounted water heater, comprising a hot water tank, a base frame fixedly connected to one side of the hot water tank by bolts, a panel connected to the base frame, a U-shaped pipe with an inlet and an outlet, a smoke collection hood assembly with a smoke exhaust port, an isolation and diversion baffle, a gas ejector assembly pipe, a pressure stabilizing valve assembly fixedly installed at the bottom of the base frame, and a sealing strip. The U-shaped pipe extends into the hot water tank, while its inlet and outlet are exposed within the base frame. The panel and the base frame are movably fitted together via left and right hinges. A smoke exhaust port is provided on the panel corresponding to the outlet of the U-shaped pipe, and multiple louvered openings are provided on the panel corresponding to the inlet of the U-shaped pipe. The louvered openings face the base frame, with their lowest point located within the base frame. A sealing strip is fixedly provided on the base frame from the left side of the left hinge along the edge of the base frame to the right side of the right hinge. A gap for air replenishment is provided between the left and right hinges, the gap being wider than 3 mm. The smoke collection hood assembly is fixed to the bottom of the base frame and covers the air outlet. The smoke exhaust port on the smoke collection hood assembly is installed in conjunction with the smoke exhaust port opening on the panel. The smoke collection hood assembly also includes a smoke guide plate angled towards the smoke exhaust port. A diversion port is provided between the lower part of the smoke guide plate and the bottom of the base frame. The isolation diversion baffle is fixedly installed at the bottom of the base frame and located between the smoke collection hood assembly and the air inlet. The isolation diversion baffle includes a main baffle horizontally positioned between the smoke collection hood assembly and the air inlet, and two diversion plates positioned on both sides of the main baffle and extending towards the air inlet. The main baffle, the two diversion plates, and the inner surface of the panel form a relatively independent air inlet space. The gap between the top of the isolation diversion baffle and the inner surface of the panel is less than 5 mm. The top of the isolation diversion baffle is higher than the lowest position of the louver hole, and the bottom is lower than the lowest position of the diversion port.

[0005] The beneficial effects of this invention are as follows: Compared with the prior art, this invention, through the relatively independent design of the air intake combustion position and the smoke exhaust position within the base frame, reduces the potential impact of airflow on the smoke exhaust process after entering the base frame. It can withstand strong winds of up to 55 km / h, demonstrating a relatively significant wind resistance effect, which already meets the normal wind resistance requirements of vehicle-mounted water heaters. Furthermore, the design of the louver opening area and number of holes controls the amount of external air intake. The coordinated design of the louver openings, the isolation baffle, and the U-shaped tube air intake effectively mixes and ignites the gas and air within the base frame, efficiently releasing a large amount of heat. After heat exchange is completed within the U-shaped tube, the exhaust smoke is discharged from the U-shaped tube exhaust end. The smoke collection hood assembly collects and gathers the exhaust smoke... The exhaust vents out of the base frame, making the entire process of air intake, combustion, heat exchange, and exhaust simple and efficient. On the other hand, the air supply gap between the left and right hinges and the diversion port on the smoke hood assembly maintain a relatively high positive pressure at the air intake combustion position within the base frame. This reduces the adverse effects of sudden increases in external wind force on the gas and air mixture combustion and heating within the base frame. Even when the positive pressure at the air intake combustion position decreases, the positive air pressure at the air intake combustion position can still be increased through the air supply gap and the diversion port, as well as the partial diversion of airflow within the smoke hood assembly. This keeps the air pressure at the air intake combustion position within the base frame in a dynamic balance, ensuring wind protection while keeping the entire water heater in normal working condition.

[0006] Furthermore, the U-shaped inlet end is connected to the gas ejector assembly tube to form a combustion space for flammable materials to burn and release heat, and the pressure regulating valve assembly is connected to the gas ejector assembly tube to control the gas intake of the gas ejector assembly tube.

[0007] Furthermore, the isolation and drainage baffle is fixedly installed at the bottom of the base frame corresponding to the position of the louver hole.

[0008] Furthermore, the total ventilation cross-sectional area of ​​the louver openings is greater than 1.5 times the cross-sectional area of ​​the smoke exhaust port of the smoke collection hood assembly, the ratio of the cross-sectional area between the smoke exhaust port and the diversion port of the smoke collection hood assembly is 6:4, and the cross-sectional area formed by the main baffle and the two diversion plates of the isolation and diversion baffle is greater than 1.5 times the cross-sectional area of ​​the air inlet end of the U-shaped pipe.

[0009] Furthermore, when the panel mates with the base frame, it is locked by a tension spring and a sealing fit is achieved at the location of the sealing strip. Attached Figure Description

[0010] Figure 1 This is a simplified schematic diagram of the overall structure of a natural ventilation type vehicle-mounted water heater.

[0011] Figure 2 This is a simplified diagram illustrating the internal structure of a windproof system for a natural ventilation type vehicle-mounted water heater.

[0012] Figure 3 This is a simplified structural diagram of an isolation and drainage baffle. Detailed Implementation

[0013] To make the technical means, innovative features and functions of this invention easier to understand, the invention will be further described below.

[0014] like Figure 1-3 As shown, the technical solution of the windproof system of the natural exhaust type vehicle water heater of the present invention includes a hot water tank 3, a base frame 2 fixedly connected to one side of the hot water tank 3 by bolts, a panel 1 connected to the base frame 2, a U-shaped pipe with an air inlet and an air outlet, a smoke collection hood assembly 4 with a smoke exhaust port, an isolation and diversion baffle 5, a gas ejector assembly pipe 6, a pressure stabilizing valve assembly 7 fixedly installed at the bottom of the base frame 2, and a sealing strip 8. The U-shaped pipe extends into the hot water tank 3, while the air inlet and air outlet are exposed inside the base frame 2. The panel 1 and the base frame 2 are movably connected by a left hinge and a right hinge. A smoke exhaust port is opened on the panel 1 corresponding to the air outlet of the U-shaped pipe, and multiple louvered holes are opened on the panel 1 corresponding to the air inlet of the U-shaped pipe. The louvered holes face the base frame 2 and are located at their lowest point inside the base frame 2. A section of sealing strip 8 is fixedly installed on the base frame 2 from the left side of the left hinge along the edge of the base frame 2 to the right side of the right hinge. A gas filling gap 9 is left between the right hinges, and the width of the gas filling gap 9 is greater than 3 mm. The smoke collection hood assembly 4 is fixed to the bottom of the base frame 2 and covers the air outlet. The smoke exhaust port on the smoke collection hood assembly 4 is installed in conjunction with the smoke exhaust port opening on the panel 1. The smoke collection hood assembly 4 also includes a smoke guide plate set at an angle to the smoke exhaust port. A diversion port is left between the lower part of the smoke guide plate and the bottom of the base frame 2. The isolation diversion baffle 5 is fixedly installed to the bottom of the base frame 2 and is located between the smoke collection hood assembly 4 and the air inlet. The isolation diversion baffle 5 includes a main baffle horizontally arranged between the smoke collection hood assembly 4 and the air inlet, and two diversion plates arranged on both sides of the main baffle and extending towards the air inlet. The main baffle, the two diversion plates and the inner surface of the panel 1 form a relatively independent air inlet space. The gap between the top of the isolation diversion baffle 5 and the inner surface of the panel 1 is less than 5 mm. The top of the isolation diversion baffle 5 is higher than the lowest position of the louver hole and the bottom is lower than the lowest position of the diversion port.

[0015] Under normal operating conditions, air from outside the water heater enters the combustion chamber through three main methods. The first and most important method is through multiple louvered openings on panel 1, where it mixes with the gas. Due to the isolation effect of the baffle 5, the air entering the combustion chamber through the louvers mixes with the gas to create positive pressure. The second method is through the air supply gap 9 between the left and right hinges, where it mixes with the gas. This air primarily fine-tunes the positive pressure at the combustion chamber, replenishing air and adjusting the positive pressure as it slightly weakens. The third method is through the exhaust port into the smoke collection hood assembly 4. The air entering the smoke collection hood assembly 4 is divided into two parts: one part directly enters the exhaust end of the U-shaped pipe and creates negative pressure. The other part enters the base frame 2 through the diversion port on the smoke hood assembly 4. When the airflow into the base frame 2 is large, that is, when the air pressure is greater than the positive air pressure inside the isolation and diversion baffle 5, the airflow forms a positive supplementary air pressure towards the combustion position under the guidance and diversion effect of the main baffle and the two diversion plates. This prevents the air entering the base frame 2 from directly impacting the combustion position and causing instability in the positive air pressure at the combustion position. When the airflow into the base frame 2 is small, that is, when the air pressure is less than the positive air pressure inside the isolation and diversion baffle 5, the air pressure of the airflow entering the base frame 2 does not affect the positive air pressure inside the isolation and diversion baffle 5. This allows the positive air pressure at the combustion position to be dynamically balanced and regulated in a timely manner, avoiding adverse effects of changes in wind speed and direction outside the water heater on the combustion of gas inside the water heater. Ultimately, this meets the wind protection requirements of the vehicle water heater during vehicle movement, ensuring that the water heater can be used normally even when the vehicle is traveling at high speed.

[0016] In the above technical solution, the U-shaped air inlet end is also connected to the gas ejector assembly pipe 6 to form a combustion space for flammable materials to burn and release heat. The pressure regulating valve assembly 7 is connected to the gas ejector assembly pipe 6 and controls the air intake of the gas ejector assembly pipe 6. The pressure regulating valve assembly 7 controls the air intake of the gas ejector assembly pipe 6 to ensure that the gas entering the combustion space is fully mixed with air, so that the gas can be burned as completely as possible, avoiding gas waste and meeting the requirements of energy conservation and emission reduction.

[0017] In the normal operating state of the water heater of the present invention, the pressure regulating gas valve assembly 7 opens and controls the amount of gas entering the combustion position. Natural air from outside the water heater enters the combustion position through multiple louver holes. The gas and air mix at the front end of the gas ejector assembly pipe 6 and are then guided by the gas ejector assembly pipe 6 to the air inlet end of the U-shaped pipe. The gas is ignited by the ignition needle in the air inlet end and burns fully in the U-shaped pipe. After the U-shaped pipe heats up, it exchanges heat with the cold water in the hot water tank 3 to heat the cold water. The exhaust smoke and exhaust gas after full combustion are discharged from the exhaust end of the U-shaped pipe through the exhaust port on the smoke collection hood assembly 4 to the outside of the water heater, thereby completing the cold water heating work of the entire water heater.

[0018] To ensure more efficient and concentrated entry of outside air into the base frame 2, in one embodiment of the present invention, the panel 1 is locked with the base frame 2 by a tension spring and a sealing fit is achieved at the location of the sealing strip 8. The isolation and diversion baffle 5 is fixedly installed at the bottom of the base frame 2 corresponding to the louver hole. The design of the isolation and diversion baffle 5 facing the louver hole makes it easier to maintain the positive pressure at the combustion position, minimizes the space occupied by other components in the base frame 2, separates the combustion position from other components in the base frame 2, avoids the impact of the high temperature generated by combustion on other heat-sensitive components, and at the same time minimizes the possibility of the flame that may drift momentarily during combustion causing high-temperature damage to other components. The combustion process is safer and more efficient, with less impact on other components.

[0019] In practical applications, after repeated testing and debugging, the total ventilation cross-sectional area of ​​the louver holes is greater than 1.5 times the cross-sectional area of ​​the exhaust port of the smoke collection hood assembly 4. The ratio of the cross-sectional area between the exhaust port and the diversion port of the smoke collection hood assembly 4 is 6:4. The cross-sectional area formed by the main baffle and the two diversion plates of the isolation diversion baffle 5 is greater than 1.5 times the cross-sectional area of ​​the air inlet end of the U-shaped tube. The above area relationship helps to smoothly carry out the air inlet and outlet in the base frame 2, and the dynamic balance of positive and negative air pressure in the base frame 2 is easier to achieve, ensuring the windproof effect of the overall water heater.

[0020] Although the present invention has been disclosed above with specific embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of the appended claims.

Claims

1. A windproof system for a natural draft vehicle-mounted water heater, characterized in that: The utility model provides a kind of gas stove, including heat exchange water tank (3), the base frame (2) being fixedly connected with heat exchange water tank (3) side by fixed bolt, panel (1) being connected with base frame (2), U-shaped pipe with air inlet end and air outlet end, smoke collecting cover assembly (4) with smoke outlet, isolation drainage baffle (5), gas induction assembly pipe (6), fixedly installed in the bottom of base frame (2) pressure stabilizing valve assembly (7), sealing rubber strip (8), the U-shaped pipe is partially inserted into heat exchange water tank (3) and air inlet end and air outlet end are exposed in base frame (2), panel (1) and base frame (2) are openably matched by left hinge and right hinge, panel (1) is opened with smoke outlet through hole corresponding U-shaped pipe air outlet end position, panel (1) is opened with multiple louvre holes corresponding U-shaped pipe air inlet end position, the louvre hole is set towards base frame (2) and lowest position is located in base frame (2), a section of sealing rubber strip (8) is fixedly arranged on base frame (2) from left side of left hinge to right side of right hinge along base frame (2) mouth, left hinge and right hinge are left with air supplement gap (9), the width of air supplement gap (9) is greater than 3 millimeters, smoke collecting cover assembly (4) is fixed in the bottom of base frame (2) and covers air outlet end above, smoke outlet on smoke collecting cover assembly (4) is matched with the smoke outlet through hole opened on panel (1), smoke collecting cover assembly (4) further includes a guide plate that is arranged obliquely to smoke outlet, the lower part of the guide plate is left with a shunt between the inner bottom of the base frame (2), the isolation drainage baffle (5) is fixedly installed in the bottom of base frame (2) and is located between smoke collecting cover assembly (4) and air inlet end, the isolation drainage baffle (5) includes a main baffle horizontally arranged between smoke collecting cover assembly (4) and air inlet end, two drainage plates arranged on both sides of the main baffle and extending towards the side of air inlet end, the main baffle, the two drainage plates and the inner surface of the panel (1) form a relatively independent air inlet space, the gap between the top of the isolation drainage baffle (5) and the inner surface of the panel (1) is less than 5 millimeters, the top of the isolation drainage baffle (5) is higher than the lowest position of the louvre hole, and the bottom is lower than the lowest position of the shunt.

2. The windproof system of the natural draft vehicle-mounted water heater according to claim 1, characterized in that: The air inlet end of the U-shaped pipe is also connected with the gas induction assembly pipe (6) and forms a combustion space for the combustion of flammable materials and the release of heat.

3. The wind protection system of a natural draft vehicle-mounted water heater according to claim 1 or 2, characterized in that: The isolation drainage baffle (5) is fixedly installed in the bottom of the base frame (2) corresponding to the position of the louvre hole.

4. The wind protection system of claim 1 or 2, wherein: The total opening area of the louvre hole is greater than 1.5 times the cross-sectional area of the smoke outlet of the smoke collecting cover assembly (4), the ratio of the cross-sectional area between the smoke outlet of the smoke collecting cover assembly (4) and the shunt is 6:4, and the cross-sectional area surrounded by the main baffle and the two drainage plates of the isolation drainage baffle (5) is greater than 1.5 times the cross-sectional area of the air inlet end of the U-shaped pipe.

5. The wind protection system of claim 3, wherein: The total opening area of the louver hole is greater than 1.5 times the exhaust port cross-sectional area of the smoke hood assembly (4), the ratio of the cross-sectional area between the exhaust port and the shunt port of the smoke hood assembly (4) is 6:4, and the cross-sectional area surrounded by the main baffle and the two drainage plates of the isolation and drainage baffle (5) is greater than 1.5 times the cross-sectional area of the U-shaped tube inlet end.

6. The wind protection system of claim 1 or 2 or 5, wherein: When the panel (1) cooperates with the base frame (2), it is locked by a tension spring and sealed at the position of the sealing rubber strip (8).

7. The wind protection system of claim 3, wherein: When the panel (1) cooperates with the base frame (2), it is locked by a tension spring and sealed at the position of the sealing rubber strip (8).

8. The wind protection system of claim 4, wherein: When the panel (1) cooperates with the base frame (2), it is locked by a tension spring and sealed at the position of the sealing rubber strip (8). When the panel (1) cooperates with the base frame (2), it is locked by a tension spring and sealed at the position of the sealing rubber strip (8).

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