Smoke exhaust pipe, smoke exhaust system and gas water heater

Abstract

The invention relates to a smoke exhaust pipe, a smoke exhaust system and a gas water heater. The smoke exhaust pipe comprises a pipe body and a smoke exhaust port. Wherein the pipe body is provided with a first section suitable for being connected with a main body of the gas water heater and a second section connected with the first section, an included angle is formed between the extending direction of the first section and the extending direction of the second section, and at least the inner pipe wall of the lower side of the second section is sunken outwards to form a groove; and the smoke outlet is formed on the groove wall of the groove. Even if an obtuse angle is formed between the second section of the pipe body and the first section of the pipe body due to installation errors or wind blowing and the like, rainwater entering the groove through the smoke exhaust port can flow to the lowest position of the groove under the action of gravity and then flow out through the smoke exhaust port in the groove. And the service life of the smoke exhaust pipe and the service life of the main body of the gas water heater cannot be shortened due to backflow into the main body of the gas water heater. Therefore, the smoke exhaust pipe can overcome the defect that the service life of the water heater is shortened due to the fact that a smoke exhaust pipe in the prior art easily causes rainwater backflow.

Description

technical field [0001] The invention relates to the technical field of water heaters, in particular to a smoke exhaust pipe, a smoke exhaust system and a gas water heater. Background technique [0002] A gas water heater, also known as a gas water heater, refers to a gas appliance that uses gas as a fuel and transfers heat to the cold water flowing through the heat exchanger through combustion heating to achieve the purpose of preparing hot water. The advantage is that it can be used right out of the box, without waiting, and with a small footprint. In terms of safety, the gas water heater realizes the separation of heat production and heat supply, bathing in the bathroom and installing it in the kitchen, avoiding the danger of leakage during the bathing process. [0003] like figure 1 and figure 2 As shown, the gas water heater 200' in the prior art generally discharges the flue gas generated by combustion out of the room through a smoke exhaust pipe 100'. 3', the pipe...

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Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the service life of the water heater is easily shortened due to the backflow of rainwater in the smoke exhaust pipe in the prior art, thereby providing a smoke exhaust pipe, a smoke exhaust system and a gas exhaust pipe that are not easy to cause rainwater backflow. water heater

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