Rainwater-proof diversion trench structure of smoke pipe

By setting a multi-layer trapezoidal groove structure at the bottom of the flue, the problem of low drainage efficiency of existing flue rainwater diversion channels is solved, realizing the dual functions of efficient drainage and water storage, and improving the waterproof capability of the flue.

CN223924855UActive Publication Date: 2026-02-17SHANGHAI RINNAI
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202520780321.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-23
Publication Date
2026-02-17
Estimated Expiration
2035-04-23

AI Technical Summary

Technical Problem

The existing rainwater diversion channel structure of the flue has low drainage efficiency and is prone to overflow when the rainfall is too heavy, which cannot effectively prevent rainwater backflow.

Method used

The design incorporates a multi-layered slot structure, with the slots decreasing in number along the direction of the flue to form a trapezoidal cross-section. These slots are then arranged at an angle and staggered to form an inverted trapezoidal shape, serving both drainage and temporary water storage functions.

Benefits of technology

It significantly improves drainage efficiency, prevents rainwater overflow, alleviates instantaneous pressure during heavy rain, and enhances the waterproof performance of the flue.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223924855U_ABST
    Figure CN223924855U_ABST
Patent Text Reader

Abstract

The utility model discloses a rain-proof diversion trench structure of a smoke pipe, which comprises a smoke pipe body, and a diversion trench structure body is arranged at the bottom of the smoke pipe body. The diversion trench structure body is composed of a plurality of notches formed in the smoke tube body, and the notches are sequentially and progressively arranged in the direction from the upper portion to the lower portion of the smoke tube body to form multiple layers of notches; the notch extends towards the interior of the smoke tube body to form a baffle structure. The drainage device has the functions of drainage and temporary water storage, the upper-layer notch intercepts most rainwater, the lower-layer flow guide groove supplements drainage, single-point overload is avoided, instantaneous pressure can be relieved during rainstorm, and therefore drainage efficiency is remarkably improved, and rainwater is prevented from overflowing.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the technical field of waterproof structure for flue pipes, and in particular to a structure for a rainwater diversion channel for flue pipes. Background Technology

[0002] A rainwater drainage channel for flue pipes is a structural design used to prevent rainwater from entering the flue. It typically achieves its rainwater drainage function through the combination of drainage channels and drainage holes. Its core function is to prevent rainwater accumulation or backflow through structural optimization, while ensuring the normal operation of the flue pipe's exhaust function.

[0003] In existing technologies, the drainage channels for rainwater protection in flues are mostly single-layer spiral or annular channels, where rainwater flows in only one direction, resulting in low drainage efficiency and easy overflow when rainfall is excessive.

[0004] Therefore, how to improve the drainage channel structure of the flue to prevent rainwater from overflowing, thereby improving drainage efficiency and preventing rainwater overflow, has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of the above-mentioned defects of the prior art, the present invention provides a rainwater drainage channel structure for flue pipes, the purpose of which is to improve the drainage efficiency of flue pipes.

[0006] To achieve the above technical objectives, this utility model provides a rainwater drainage channel structure for a flue, including a flue body, wherein the bottom part of the flue body is provided with a drainage channel structure body;

[0007] The guide channel structure is composed of multiple slots opened on the flue body. The multiple slots are arranged in descending order along the direction from the top to the bottom of the flue body to form multiple layers of slots.

[0008] The slot extends into the interior of the flue body to form a baffle structure.

[0009] Preferably, the cross-section of the slot along the water flow direction is a trapezoidal section, the outer width of the slot is greater than the inner width, and the sidewall of the slot is inclined.

[0010] Preferably, the slots in each layer are staggered with the slots in the adjacent layer.

[0011] Preferably, the outer periphery of the combination of the plurality of slots forms an inverted trapezoidal shape.

[0012] Preferably, the number of slots is three.

[0013] The beneficial effects of this utility model are:

[0014] Due to the above-mentioned structural design, this utility model has both drainage and temporary water storage functions. The upper channel intercepts most of the rainwater, while the lower channel supplements the drainage, avoiding single-point overload and relieving instantaneous pressure during heavy rain, thereby significantly improving drainage efficiency and preventing rainwater overflow. Attached Figure Description

[0015] Figure 1 This is a front view structural diagram of the present invention;

[0016] Figure 2 for Figure 1 A schematic diagram of the cross-section.

[0017] In the diagram: 1. Smoke pipe body; 2. Groove. Detailed Implementation

[0018] The following will further explain the concept, specific structure and technical effects of this utility model in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of this utility model.

[0019] Example 1: As Figures 1-2 As shown, the rainwater drainage channel structure of the flue includes a flue body 1, and the bottom part of the flue body 1 is provided with the drainage channel structure body.

[0020] The main body of the guide channel structure consists of three slots 2 opened on the flue body 1. The three slots 2 are arranged in descending order from the top to the bottom of the flue body 1 to form a two-layer slot 2. When rainwater enters the interior of the flue body 1 through the inlet, the water flows downward along the slots 2. At the same time, the slot 2 structure can effectively prevent debris from entering the flue body 1.

[0021] The slot 2 extends into the interior of the flue body 1 to form a baffle structure.

[0022] The cross-section of the trough 2 along the water flow direction is a trapezoidal section. The outer width of the trough 2 is greater than the inner width. The sidewall of the trough 2 is inclined to accommodate more rainwater and guide the water flow to slide down quickly, reducing stagnation.

[0023] The lower slot 2 and the upper slot 2 are arranged alternately in the horizontal direction.

[0024] The outer periphery of the combination of multiple slots 2 forms an inverted trapezoidal shape.

[0025] In summary, this invention features three slots 2 at the bottom of the flue body 1, arranged in an asymmetrical, stepped distribution. The upper two slots 2 and the lower middle slot 2 form a "primary-secondary" division of labor: the upper two slots 2, located near the top of the flue body 1, prioritize intercepting and guiding rainwater; the lower middle slot 2, positioned further back, receives residual water overflowing from the two slots 2, forming a secondary drainage channel. The two slots 2 intercept most of the rainwater, while the middle slot 2 supplements the drainage, preventing single-point overload. The rearward design of the middle slot 2 creates an airflow barrier, reducing the risk of external winds "blowing" rainwater back into the flue body 1, significantly improving drainage efficiency.

[0026] In terms of structural integration, the trapezoidal cross-section of slot 2, combined with the stepped distribution of three slots 2, forms an integrated structure for guiding, diverting, and storing water, serving both drainage and temporary water storage functions (relieving instantaneous pressure during heavy rain). The trapezoidal structure of slot 2 resembles an "I-beam," making the slot 2 area less prone to deformation. Slots 2 are only located at the bottom of the flue body 1 (the area prone to water accumulation), avoiding the weakening of pipe wall strength caused by overall slotting. In response to extreme rainstorms, slots 2 can temporarily store some rainwater, which is then gradually discharged through a slot 2 in the middle of the bottom layer, reducing instantaneous drainage pressure.

[0027] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A rainwater diversion groove structure for a smoke pipe, comprising a smoke pipe body, characterized in that: The bottom part of the smoke pipe body is provided with a flow guide groove structure body; The flow guide groove structure body is composed of a plurality of notches arranged on the smoke pipe body, and the plurality of notches are arranged in a decreasing manner from the upper part to the lower part of the smoke pipe body, forming a plurality of layers of notches. The notches extend to the inside of the smoke pipe body to form a baffle structure.

2. The rainwater deflector gutter structure of claim 1, wherein: The cross section of the notch along the water flow direction is a trapezoidal section, the outer width of the notch is greater than the inner width, and the side wall of the notch is inclined.

3. The rainwater deflector gutter structure of claim 2, wherein: Each layer of notches is arranged staggered with an adjacent layer of notches.

4. The rainwater deflector gutter structure of any one of claims 1 to 3, wherein: The outer periphery of the plurality of notches in combination forms an inverted trapezoidal shape.

5. The rainwater deflector gutter structure of claim 4, wherein: The number of notches is three.