Cooking fume purifier
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Solution Overview
Problem
Existing range hoods and integrated stoves cause significant energy loss and oxygen deficit by exhausting indoor heating or cooling air, leading to inefficient fume extraction and environmental pollution, with energy consumption 10 times higher than their own power usage and inadequate filtration of cooking fumes.
Innovation Solution
A low-carbon self-balance cooking fume purifier incorporating a power system with a fume extraction fan, blower fan, air curtain fan, check valve actuator, and intelligent controller, along with a silencing and energy-saving system, which includes a pre-filter, silencer, and air curtain system for two-stage filtration and reduced noise, effectively extracting cooking fumes while minimizing energy consumption and indoor air exhaustion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If range hood and integrated stove exhaust cooking fumes to outdoors, then fume extraction effect is improved, but indoor heating air or cooling air is exhausted causing significant energy loss
Solution Approach 1:
The patent recovers and reuses the air flow from the fume extraction fan to generate the air curtain, instead of discarding it. This recovered air flow is redirected through the air curtain inlet duct to form the air curtain that prevents indoor air from entering the exhaust path, thereby eliminating energy loss while maintaining effective fume extraction.
Solution Approach 2:
The patent uses pneumatic principles to create an air curtain that acts as a barrier between the indoor environment and the exhaust system. The air curtain is generated by directing air flow through the air curtain inlet duct and air curtain outlet, forming a protective air barrier that prevents indoor heating or cooling air from being exhausted without requiring additional energy input.
2Loss of energy
If range hood and integrated stove operate with closed doors and windows, then avoidance of heating air or cooling air escape is improved, but oxygen deficit and rarefied air occur diminishing fume exhaust effect
Solution Approach 1:
The air curtain acts as an intermediary barrier between the indoor environment and the exhaust system. It allows the system to maintain closed doors and windows (preventing energy loss) while still effectively extracting cooking fumes, as the air curtain selectively prevents indoor air from entering the exhaust path without compromising fume removal capability.
3Device complexity
If range hood and integrated stove exhaust cooking fumes directly to outdoors without filtering, then fume extraction is simplified, but harmful particles pollute air and cause severe noise pollution
Solution Approach 1:
The patent extracts and removes harmful particles from the exhaust air flow using a filtering system. The filter is positioned in the exhaust path to capture harmful particles before they are discharged outdoors, thereby reducing air pollution while maintaining relatively simple device structure.
Solution Approach 2:
The patent converts the potentially harmful exhaust air flow into a beneficial resource by using it to generate the air curtain. The same air flow that could carry harmful particles is redirected through the air curtain inlet duct to create the protective air barrier, and harmful particles are subsequently removed by the filter before discharge.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The low-carbon self-balance cooking fume purifier achieves fume extraction with less than one-tenth the energy consumption of traditional systems, reduces noise pollution, and ensures complete filtration of cooking fumes, preventing indoor air exhaustion and oxygen deficit, providing a healthier and more energy-efficient kitchen environment.
Implementation Method 1
an air curtain system, including an air curtain inlet duct, an air curtain outlet duct, and the air curtain fan; wherein, the air curtain fan in the power system is installed on the air curtain inlet duct
Implementation Method 2
a silencing system, including a pre-filter, a silencer, the plenum chamber, and an air curtain system
Implementation Method 3
a silencer, including a silencer body, a silencer outer cover wrapped outside the silencer body, a silencer inner lining cover wrapped inside the silencer, and a silencing material sandwiched between the outer cover and the inner cover
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A low-carbon self-balance cooking fume purifier includes a power system composed of a fume extraction fan (1), a blower fan (2) configured to exhaust cooking fumes, an air curtain fan (25), a check valve actuator (16), a control circuit and an intelligent controller (15); a fume exhaust system composed of a plenum chamber (13), the blower fan (2) configured to exhaust the cooking fumes, and a check valve (17); a silencing system composed of a fume pre-filter (7), a silencer, the plenum chamber (13), and an air curtain system; and an energy-saving system composed of an air curtain inlet duct (21), an air curtain outlet duct (27), and the air curtain fan (25). A stove cabinet (29), a disinfection cabinet and an oven or a steam cooker (28) are integrated in the low-carbon self-balance cooking fume purifier. This purifier outperforms a range hood and integrated stove in terms of the fume extraction, and has the functions of the integrated stove, the disinfection cabinet, and a steam cooler (28) or oven. The cooking fumes undergo two-stage filtration without the need to clean the purifier body, thereby mitigating the pollution of cooking fumes to the atmosphere. The silencer and plenum chamber (13) are designed to significantly reduce noise pollution.