Gas stove drainage leak-proof bypass system
By designing a water-draining and leak-proof bypass system in the gas stove, and using the inclined drain pipe and the air supply pipe to form an airflow barrier, the problems of ignition failure and gas leakage caused by water accumulation in the burner are solved, thereby achieving stable ignition and safe operation of the burner.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG HUAJIE KITCHEN IND CO LTD
- Filing Date
- 2025-06-09
- Publication Date
- 2026-06-02
AI Technical Summary
In commercial gas stoves, the burner is prone to water accumulation, which can prevent the flame from igniting. At the same time, there is a risk of gas leakage in the drain pipe. Existing technologies have not been able to effectively solve this problem.
A gas stove water-draining and leak-proof bypass system is designed. By setting an inclined drain pipe and a make-up air pipe at the bottom of the burner, combined with a flow guide connector, an airflow barrier is formed to drain accumulated water and prevent gas leakage, ensuring stable ignition of the flame.
It effectively drains accumulated water, improves the success rate of burner start-up, eliminates the risk of gas leakage, and enhances the safety and reliability of gas stoves.
Smart Images

Figure CN224316237U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of fuel stove technology, specifically relating to a gas stove drainage and leak-proof bypass system. Background Technology
[0002] In the commercial gas stove industry, the stable operation of the burner is crucial for cooking safety. Existing commercial gas stoves typically have a main gas valve and a ignition valve. The main gas valve controls the burner's flame intensity, while the ignition valve provides the heat source for igniting the burner. During use, the ignition valve is first opened to ignite the flame, then the main gas valve is opened to ignite the burner and adjust the flame intensity. During this process, a bypass line in the main air supply duct needs to be open to supply oxygen to the ignition. However, in actual use, water can easily enter the burner, causing water accumulation and preventing the ignition of the flame, thus malfunctioning the burner.
[0003] Chinese patent CN218495029U discloses a burner with a water collection tray, including a burner head, a flame cap, and a base. The flame cap fits snugly onto the burner head, which is mounted on the base. A water tray is fitted between the base and the burner head. The surface of the water tray is concave, with the concave side facing upwards. A through hole is formed in the center of the water tray, and a liquid drain pipe is connected to the through hole. The liquid drain pipe passes through the base. This burner with a water collection tray, by detachably installing a water tray between the burner head and the base, with the concave surface facing upwards, isolates the bottom surface of the burner head from the base, preventing the burner head from directly contacting the base and reducing heat loss. At the same time, the through hole in the center of the water tray connects to the liquid drain pipe. This patented design can collect liquids such as soup that are accidentally dripped from the top into the lower liquid pipe and flow out, ensuring the cleanliness of the base. The detachable water tray is also easy to replace and clean. However, it does not consider the gas sealing problem between the burner and the lower liquid pipe. The lower liquid pipe will directly connect to the gas space inside the burner, forming a leakage channel and causing the risk of gas leakage. Utility Model Content
[0004] The purpose of this invention is to provide a gas stove drainage and leak-proof bypass system that can solve the problem of water accumulation in the burner causing the flame to fail to ignite, while avoiding the risk of gas leakage caused by the drain pipe.
[0005] To achieve the above objectives, the technical solution of this utility model is as follows:
[0006] A gas stove drainage and leak-proof bypass system includes a furnace, a burner is installed through the bottom of the furnace, a main air supply pipe is installed at the bottom of the burner, a blower is installed at the end of the main air supply pipe away from the burner, a ignition bypass pipe is installed on the main air supply pipe, one end of the ignition bypass pipe is connected to the side wall of the main air supply pipe near the blower, the other end of the ignition bypass pipe is connected to the side wall of the main air supply pipe near the burner, a drain pipe is installed at the bottom of the burner with the end of the drain pipe away from the burner inclined downwards, and a makeup air pipe is installed between the drain pipe and the ignition bypass pipe.
[0007] Furthermore, a ignition gas interface is installed on the ignition bypass pipeline.
[0008] Furthermore, a main gas interface is installed on the main air supply duct.
[0009] Furthermore, the burner is arranged in a disc shape, and the angle between the central axis of the burner and the axis of the drain pipe is between 30-40°.
[0010] Furthermore, a flow guide joint is installed on the drain pipe, and the flow guide joint is inclinedly installed on the drain pipe in conjunction with the air supply pipe.
[0011] Furthermore, the flow guide joint is designed in the shape of a circular tube, and the angle between the axis of the flow guide joint and the axis of the drain pipe is between 30-60°.
[0012] Furthermore, the end of the flow guide joint away from the drain pipe is connected to the air supply pipe.
[0013] Furthermore, the diameter of the ignition bypass pipe is smaller than the diameter of the main air supply pipe.
[0014] Furthermore, the diameter of the drain pipe is smaller than the diameter of the main air supply pipe.
[0015] Furthermore, the diameter of the make-up air duct is smaller than the diameter of the main air supply duct.
[0016] The beneficial effects of this utility model are as follows:
[0017] The angled drain pipe guides water from inside the burner, preventing ignition failures caused by water accumulation and improving the burner's start-up success rate. The air supply pipe directs airflow to the drain pipe through a guide connector, forming an airflow barrier to prevent reverse gas leakage and eliminate safety hazards. The ignition bypass pipe provides gas to both the ignition and air supply pipes simultaneously, ensuring sufficient oxygen supply to the ignition while avoiding excessive airflow that could affect the burner's combustion efficiency. This device addresses the characteristics of commercial gas stoves, such as high-frequency water accumulation and high gas pressure, by simultaneously solving drainage and leakage prevention issues, thus improving the safety and reliability of commercial gas stoves. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;
[0019] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;
[0020] Figure 3 for Figure 1 Enlarged view of point A in the middle;
[0021] Figure 4 for Figure 2 Enlarged view of point A in the middle;
[0022] In the picture:
[0023] 1. Furnace; 2. Burner; 3. Main air supply pipeline; 4. Blower; 5. Ignition bypass pipeline; 6. Drain pipe; 7. Make-up air pipe; 8. Ignition gas interface; 9. Main gas interface; 10. Flow guide connector. Detailed Implementation
[0024] The present invention will now be described and illustrated in detail with reference to the embodiments.
[0025] Example 1
[0026] like Figure 1-4 As shown, the gas stove drainage and leak-proof bypass system includes a furnace 1, a burner 2 is installed through the bottom of the furnace 1, a main air supply pipe 3 is installed at the bottom of the burner 2, a blower 4 is installed at the end of the main air supply pipe 3 away from the burner 2, a ignition bypass pipe 5 is installed on the main air supply pipe 3, one end of the ignition bypass pipe 5 is connected to the side wall of the main air supply pipe 3 near the blower 4, the other end of the ignition bypass pipe 5 is connected to the side wall of the main air supply pipe 3 near the burner 2, a drain pipe 6 is installed at the bottom of the burner 2 and the end of the drain pipe 6 away from the burner 2 is inclined downward, and a makeup air pipe 7 is installed between the drain pipe 6 and the ignition bypass pipe 5.
[0027] The drain pipe 6, in conjunction with the make-up air pipe 7, can drain accumulated water and prevent gas leakage through the airflow barrier, thus solving the problems of drainage and leakage prevention. The ignition bypass pipe 5 can supply gas to both the ignition and the make-up air pipe 7 simultaneously, achieving a balance between the ignition air supply and the gas sealing effect, while avoiding airflow interference that could affect the stability of the ignition and improving ignition reliability.
[0028] A ignition gas interface 8 is provided on the ignition bypass pipeline 5.
[0029] The main gas supply duct 3 is equipped with a main gas interface 9.
[0030] The ignition gas interface 8 connects to the ignition gas source to ensure stable ignition and continuous combustion of the ignition; the main gas interface 9 connects to the gas source of the main burner 2 and is responsible for delivering a large flow of gas; the ignition gas interface 8 is separate from the main gas interface 8 to achieve independent control of ignition and main burner combustion, avoiding fluctuations in gas flow that could affect the stability of the ignition.
[0031] The burner 2 is arranged in a disc shape, with the angle between the central axis of the burner 2 and the axis of the drain pipe 6 between 30-40°. The drain pipe 6 is inclined downwards, which can achieve efficient drainage in a limited space and prevent water from accumulating at the bottom of the burner 2, thus avoiding ignition failure.
[0032] A flow guide joint 10 is provided on the drain pipe 6, and the flow guide joint 10 is inclinedly installed on the drain pipe 6 in conjunction with the air supply pipe 7.
[0033] The flow guide 10 is generally arranged in a circular tube shape, and the angle between the axis of the flow guide 10 and the axis of the drain pipe 6 is between 30-60°.
[0034] The flow guide joint 10 guides the airflow of the make-up air pipe 7 to flow upward along the drain pipe 6, forming a stable gas seal barrier and effectively preventing gas backflow.
[0035] The end of the flow guide 10 away from the drain pipe 6 is connected to the air supply pipe 7.
[0036] The diameter of the ignition bypass pipe 5 is smaller than the diameter of the main air supply pipe 3.
[0037] The diameter of drain pipe 6 is smaller than that of main air supply pipe 3.
[0038] The diameter of the make-up air duct 7 is smaller than the diameter of the main air supply duct 3.
[0039] The larger diameter main air supply pipe 3 ensures stable main air pressure, thereby providing sufficient air volume to support the main flame combustion; the smaller diameter of the flame bypass pipe 5 and the make-up air pipe 7 are adapted to the compact space requirements inside the stove, saving material costs.
Claims
1. A gas stove drainage and leak-proof bypass system, comprising a furnace (1), wherein a burner (2) is provided through the bottom of the furnace (1), characterized in that, The burner (2) is provided with a main air supply duct (3) at the bottom. A blower (4) is provided at the end of the main air supply duct (3) away from the burner (2). A spark bypass duct (5) is provided on the main air supply duct (3). One end of the spark bypass duct (5) is connected to the side wall of the main air supply duct (3) near the blower (4). The other end of the spark bypass duct (5) is connected to the side wall of the main air supply duct (3) near the burner (2). A drain pipe (6) is provided at the bottom of the burner (2), and the end of the drain pipe (6) away from the burner (2) is inclined downward. A makeup air pipe (7) is provided between the drain pipe (6) and the spark bypass duct (5).
2. The gas stove drainage and leak-proof bypass system according to claim 1, characterized in that, A ignition gas interface (8) is provided on the ignition bypass pipeline (5).
3. The gas stove drainage and leak-proof bypass system according to claim 1, characterized in that, The main gas supply pipe (3) is equipped with a main gas interface (9).
4. The gas stove drainage and leak-proof bypass system according to claim 1, characterized in that, The burner (2) is arranged in a disc shape, and the angle between the central axis of the burner (2) and the axis of the drain pipe (6) is between 30-40°.
5. The gas stove drainage and leak-proof bypass system according to claim 1, characterized in that, A flow guide joint (10) is provided on the drain pipe (6), and the flow guide joint (10) is inclinedly installed on the drain pipe (6) in conjunction with the air supply pipe (7).
6. The gas stove drainage and leak-proof bypass system according to claim 5, characterized in that, The flow guide (10) is set in a circular tube shape, and the angle between the axis of the flow guide (10) and the axis of the drain pipe (6) is between 30-60°.
7. The gas stove drainage and leak-proof bypass system according to claim 6, characterized in that, The end of the flow guide (10) away from the drain pipe (6) is connected to the air supply pipe (7).
8. The gas stove drainage and leak-proof bypass system according to claim 1, characterized in that, The diameter of the fire bypass pipe (5) is smaller than the diameter of the main air supply pipe (3).
9. The gas stove drainage and leak-proof bypass system according to claim 1, characterized in that, The diameter of the drain pipe (6) is smaller than the diameter of the main air supply pipe (3).
10. The gas stove drainage and leak-proof bypass system according to claim 1, characterized in that, The diameter of the make-up air pipe (7) is smaller than that of the main air supply pipe (3).