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Anti-down-draft exhaust fume collecting hood for water heater

A technology for fume collecting hoods and water heaters, which is applied in the direction of fluid heaters, lighting and heating equipment, etc., which can solve the problems of easy jamming of valve plates, limited turning space of pipes, and air entering into water heaters, so as to avoid backflow of air flow, save energy and reduce energy consumption. Good consumption, good effect

Pending Publication Date: 2020-03-06
NINGBO FOTILE KITCHEN WARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the existing structure, because the smoke exhaust pipe is easily deformed and the turning space in the pipe is limited, a certain gap must be left between the valve plate and the inner wall of the pipe, otherwise the valve plate is easy to get stuck, so that it cannot be completely prevented. If the wind is down, some air can still enter the interior of the water heater; especially when the wind is strong, the backflow is still more obvious

Method used

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  • Anti-down-draft exhaust fume collecting hood for water heater
  • Anti-down-draft exhaust fume collecting hood for water heater
  • Anti-down-draft exhaust fume collecting hood for water heater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] like figure 1 To such as Figure 5 As shown, the backdraft hood for the water heater includes:

[0036] The smoke collecting hood 1 is installed above the heat exchanger of the water heater, and is a collection and buffer space for the smoke to be discharged. The smoke collecting hood 1 is provided with an air outlet 11 for connecting the smoke exhaust pipe 6 .

[0037] The smoke exhaust pipe 6 is connected to the air outlet 11, and is a passage for the smoke discharged from the air outlet to be discharged outdoors. In this embodiment, the periphery of the inner port of the smoke exhaust pipe 6 connected to the air outlet 11 is provided with an outwardly folded flange 61, and the flange 61 is accommodated in the smoke collection hood 1 and between the inner wall of the smoke collection hood with gaps (not shown).

[0038] The bracket 5 is connected to the inner wall of the fume collecting hood along the periphery of the air outlet 11, and is the connection base of ot...

Embodiment 2

[0048] like Image 6 As shown, the rotating part in this embodiment is the turbine 7, which is arranged in the water pipe 8.

[0049] The rotating member is coaxially connected with the first bevel gear 43 , the first bevel gear 43 meshes with the second bevel gear 44 , and the second bevel gear 44 is connected with the rotating shaft 47 .

[0050] The upper end of the rotating shaft 47 is sealed and connected to the ball screw 41 through the water pipe 8 .

[0051] When the water heater is working, the water flow impacts the turbine to rotate, and the turbine transmits the kinetic energy to the first bevel gear, the second bevel gear and the ball screw in sequence.

[0052] All the other contents are the same as in Example 1.

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Abstract

The invention relates to an anti-down-draft exhaust fume collecting hood for a water heater. The anti-down draft exhaust fume collecting hood comprises an exhaust fume collecting hood body (1) and a check valve (2). The exhaust fume collecting hood body (1) is provided with an exhaust outlet (11) for being connected with an exhaust fume discharging pipe (6). The anti-down-draft exhaust fume collecting hood is characterized in that the check valve (2) comprises a first valve plate (21) and a second valve plate (22) which can shield the exhaust outlet (11) after being in butt joint, and the first valve plate (21) and the second valve plate (22) are hinged to one end of a first connection rod (31) and a second connection rod (32) respectively. A water inlet pipe (8) of the water heater is internally provided with a rotation part driven by water flow to rotate, the rotation part drives the other end of the first connection rod (31) and the other end of the second connection rod (32) through a transmission assembly to move up and down so as to drive the first valve plate (21) and the second valve plate (22) to slide radially, and the exhaust outlet (11) is opened or closed. According tothe anti-down-draft exhaust fume collecting hood, it is unnecessary to consume additional energy, the exhaust outlet can be completely shielded, and the down draft phenomenon of outdoor airflow is completely avoided.

Description

technical field [0001] The invention relates to the field of water heaters, in particular to a downdraft-proof smoke-collecting hood for water heaters. Background technique [0002] Water heaters need forced smoke exhaust during operation. Usually, a smoke exhaust pipe is connected to the air outlet of the smoke collection hood, and the smoke is forced out of the smoke exhaust pipe from the smoke exhaust pipe to the outside by a fan. Because the smoke exhaust pipe is connected to the outdoor environment, when the water heater is not working, the outdoor wind is poured into the room from the smoke exhaust pipe, and a check valve is usually provided in the existing smoke exhaust pipe. [0003] As disclosed in CN202835516U "A Range Hood with Self-contained Check Valve", it includes a smoke exhaust pipe connected to the upper end of the range hood, and a check valve is arranged at the mouth of the smoke exhaust pipe, and the check valve is connected to the exhaust pipe. The smo...

Claims

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Application Information

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IPC IPC(8): F24H9/00F24H9/20
CPCF24H9/0005F24H9/2007
Inventor 杨开明涂磊秦刚魏苗苗王世平邓炜兴王雪娇周高云
Owner NINGBO FOTILE KITCHEN WARE CO LTD
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