Foaming overflow preventing device for water heater

Abstract

The invention provides a foaming overflow preventing device for a water heater so as to solve the problems existing in the prior art, and relates to the technical field of water heaters. The device solves the technical problem that the overflow preventing effect of a foaming overflow preventing structure of an existing water heater is not ideal. The device comprises a plugging main body. The wallface, close to a filling opening, of the plugging main body extends in the axial direction of the plugging main body to form an overflow preventing reinforcing structure. After the foaming overflow preventing device for the water heater is installed in a shell of the water heater, the contact area between the plugging main body and the shell of the water heater is increased through the overflow preventing reinforcing structure. The contact distance in the disassembling and assembling direction of the plugging machine body is increased, thus friction force between the plugging main body and theshell of the water heater is increased, reliability of connection between the plugging main body and the shell of the water heater is increased, occurrence of foaming overflow is reduced, and the overflow preventing effect is good.

Description

technical field [0001] The invention relates to the technical field of water heaters, in particular to a foaming and overflow prevention device for a water heater. Background technique [0002] Air energy water heaters generally use polyurethane foam for insulation. There are some air-energy water heaters on the market. Due to the special process of production and processing, EPS material foam must be used for foaming and overflow prevention during the polyurethane foaming process. [0003] Because the foam is packed inside the shell, the anti-spill foam structure is generally provided with a guiding structure to facilitate the foam loading. The use of foam anti-overflow requires that the foam and the shell be tightly assembled, otherwise the foam material is easy to overflow, especially the position of the filling hole on the foam. The main purpose of the filling hole is to pour polyurethane foam material. The foaming tension at this position is large, even if the size of ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a water heater foaming anti-overflow device to solve the technical problem in the prior art that the anti-overflow effect of the foaming anti-overflow structure is not ideal

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