A welded air heater inlet and outlet water pipe joint

Abstract

The invention provides a welded air heater inlet and outlet water pipe joint, which includes a joint body, the joint body includes an inner pipe and an outer pipe, the inner pipe is located on the left side of the outer pipe, and the inner pipe is opened on the left side A limit slot, the upper and lower ends of the inside of the limit slot are clamped with half-arc plates adapted to the limit slot, a flow-limiting plate is arranged between the two half-arc plates, and the flow-limiting plate is provided with There are two, there are limited flow holes in the inside of the restrictor plate. The device places the inner pipe in the reserved pipe of the water tank of the heater during installation. In actual use, the water flow will impact the restrictor plate on one side, so that the impacted restrictor is limited. The flow plate approaches the flow tank until the restrictor plate is located inside the flow tank, and during the movement of the restrictor plate, the restrictor plate drives the connecting rod to support the half-arc plate, so that the half-arc plate expands against the wall of the inner tube. The impact of the water flow is used to make the inner pipe and the prefabricated pipe of the water tank of the air heater more closely fitted, the sealing performance is good, and the installation is more convenient.

Description

technical field [0001] The invention relates to the technical field of air heaters, in particular to a welded air heater inlet and outlet water pipe joint. Background technique [0002] The electric heater is mainly composed of an air heater and a fan. The air heater dissipates heat, and then the fan is sent out to adjust the indoor air temperature. The material of the air heater is generally divided into heating wire, heating tube, PTC or spiral finned tube and other heating elements. On the tube, the sheet distance is 2.5mm, the exhaust pipe and the heat medium circulation pipe are integral welded structure, the working pressure of the heater is below 0.8MPa, and the industrial heater is composed of stainless steel heating, our daily air conditioner is generally made of PTC Composed of heating pipes. [0003] In the process of realizing the present invention, it is found that at least the following problems have not been solved in the prior art: 1. The inlet and outlet w...

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Problems solved by technology

[0003] In the process of realizing the present invention, it is found that at least the following problems in the prior art have not been solved: 1. The inlet and outlet pipe joints in the existing household air heaters are generally installed directly in the factory by welding, but in the heater After the air fan is installed and used, there will be some water leakage. It will take time and effort to weld again, and the wall of the water pipe is thin. Repeated welding will greatly reduce the service life of the water pipe;

[0004] 2. The end surface of the connection hole of the reclaimed water chamber in the household air heater is welded at right angles to the port of the water pipe. The contact surface between the end surface of the water pipe and the connection hole of the water chamber is very small, which often leads to weak welding at the joint between the two, which is easy to The phenomenon of leakage has greatly affected the quality of the product

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