Novel energy-saving civil and household range hood and exhaust system

Abstract

The invention relates to an energy-saving ventilation technology, which can effectively reduce the discharge of indoor air and save energy. At present, mechanical ventilation is adopted for discharging civil and household kitchen oil fume and exhausting air in other places, negative pressure is generated, indoor air is utilized to discharge pollutants out of a room through a pipeline, and a large amount of indoor air is wasted in the mode. The core of the invention is that outdoor air is utilized to take away pollutants, a booster fan is utilized to press the outdoor air into the cavity of the exhaust hood and form guide airflow, the pollutants are mixed, guided and captured to the opening of the exhaust hood, and meanwhile, the outdoor airflow speed is increased by using the outdoor air sent by the booster fan according to a pipe shrinkage principle; negative pressure is formed at an exhaust hood opening to suck pollutants, high-speed jet airflow generated by pipe contraction is utilized to quickly take away the pollutants, and an exhaust fan is used for continuously discharging the pollutants outdoors. According to different use scenes, an exhaust fan can be not arranged, the exhaust hood can not be provided with a cavity or guide airflow, and the exhaust hood can be replaced by an exhaust outlet.

Description

Technical Field

[0001] An energy-saving ventilation technology is applied to residential and household range hoods and exhaust systems, effectively reducing indoor air exhaust and saving energy. Background Technology

[0002] Currently, mechanical ventilation is used for the emission of cooking fumes in residential and household kitchens and other places requiring exhaust. This involves using exhaust hoods or vents, ducts, and exhaust fans to form a range hood or exhaust system. The negative pressure generated by the exhaust fan forces indoor air to collect pollutants into the exhaust hood or vent, which are then exhausted outdoors through the duct system. This method consumes a significant amount of comfortable indoor air, resulting in energy loss. It also creates negative pressure indoors, requiring corresponding amounts of fresh outdoor air to enter through gaps in doors and windows. If this fresh air supply is insufficient, cooking fumes cannot be effectively exhausted, leading to air pollution and health problems. Summary of the Invention

[0003] This invention relates to a novel energy-saving civilian and household range hood and ventilation system, which is an extension of my previous invention of a jet-flow exhaust system. It effectively solves the problems of energy waste and reduced indoor comfort caused by high negative pressure in conventional indoor kitchen exhaust systems. It also addresses the issue of insufficient outdoor fresh air intake preventing the proper exhaust of polluted areas. The core of this invention lies in its system design and key components, as detailed below: The core system solution utilizes outdoor air to remove pollutants. A pressurized fan forces outdoor air into the exhaust hood cavity, creating a guiding airflow that mixes, guides, and captures pollutants towards the exhaust hood opening. Simultaneously, the outdoor air supplied by the pressurized fan utilizes a constriction principle to increase the outdoor airflow velocity, creating negative pressure at the exhaust hood opening to draw in pollutants. The high-speed jet airflow generated by the constriction quickly removes the pollutants, which are then discharged outdoors by the exhaust fan. Depending on the application scenario, the exhaust hood may not have a cavity and does not require guiding airflow; depending on the application scenario, an exhaust fan may not be necessary; for ordinary exhaust systems, the exhaust hood can be replaced with an exhaust outlet. The core components are a pressurizing fan, an exhaust hood, a converging duct assembly, and an exhaust fan. Their characteristics are as follows: the pressurizing fan supplies outdoor air; a general-purpose product can be selected based on specific parameters. The exhaust hood needs to be customized according to the pollution source, and its parameters need to be determined through design. Whether using a converging or narrowing duct design, the converging duct assembly aims to accelerate outdoor airflow to create negative pressure and quickly remove pollutants; it needs to be calculated and customized according to requirements. The exhaust fan is used for the relay transport of pollutants, and its design is determined based on the system resistance requirements. The novel energy-saving civilian and household range hood and ventilation system of the present invention uses outdoor air to replace indoor air, thereby significantly reducing the exhaust of indoor air and achieving the purpose of energy conservation and emission reduction. The components of the present invention are specifically adjusted according to different application sites or types of pollutants, and their appearance and component design may be adjusted, but the core of the above remains unchanged. Attached Figure Description

[0004] The core system schematic diagram, key component diagram, and several common application forms of this invention are shown in the following figures: Figure 1 This invention represents type 1 of the range hood and ventilation system. Figure 2 This indicates that the range hood and ventilation system of the present invention are of type 2; Figure 3 This invention describes the type of exhaust system for a range hood and part 3; Figure 4 This indicates that the range hood and ventilation system of the present invention are of type 4; Figure 5 This indicates that the type 5 of the range hood and ventilation system of the present invention is as follows; Figure 6 This indicates that the range hood and ventilation system of the present invention are of type 6; Figure 7 This refers to the tapered nozzle component of the present invention; Figure 8 This invention represents two types of exhaust hoods; Detailed Implementation

[0005] Different exhaust volumes are set according to the standard size of the places that require ventilation, such as kitchens, toilets and bathrooms, and warehouses in civil and household settings; Determine the dimensions of the exhaust hood or exhaust outlet; Calculate the airflow distribution of the system and design the outdoor fresh air flow distribution and the dimensions of the tapered pipe components; Calculate the resistance and select appropriate equipment such as fans; The finalized product designs include household range hoods, bathroom and toilet ventilation systems, and warehouse exhaust systems, all designed to meet the needs of civilian and household use.

Claims

1. This invention relates to a novel energy-saving civilian and household range hood and ventilation system, which is an extension of my previous invention of a jet-flow exhaust system. It effectively solves the problems of energy waste and reduced indoor comfort caused by high negative pressure in conventional indoor kitchen exhaust systems. It also addresses the issue of insufficient outdoor fresh air intake preventing the exhaust of polluted areas. The core of this invention lies in its system design and key components, as detailed below: The core system solution utilizes outdoor air to remove pollutants. A pressurized fan forces outdoor air into the exhaust hood cavity, creating a guiding airflow that mixes, guides, and captures pollutants towards the exhaust hood opening. Simultaneously, the outdoor air supplied by the pressurized fan utilizes a constriction principle to increase the outdoor airflow velocity, creating negative pressure at the exhaust hood opening to draw in pollutants. The high-speed jet airflow generated by the constriction quickly removes the pollutants, which are then discharged outdoors by the exhaust fan. Depending on the application scenario, the exhaust hood may not have a cavity and does not require guiding airflow; depending on the application scenario, an exhaust fan may not be necessary; for ordinary exhaust systems, the exhaust hood can be replaced with an exhaust outlet. The core components are a pressurizing fan, an exhaust hood, a converging duct assembly, and an exhaust fan. Their characteristics are as follows: the pressurizing fan supplies outdoor air; a general-purpose product can be selected based on specific parameters. The exhaust hood needs to be customized according to the pollution source, and its parameters need to be determined through design. Whether using a converging or narrowing duct design, the converging duct assembly aims to accelerate outdoor airflow to create negative pressure and quickly remove pollutants; it needs to be calculated and customized according to requirements. The exhaust fan is used for the relay transport of pollutants, and its design is determined based on the system resistance requirements. The novel energy-saving civilian and household range hood and ventilation system of the present invention uses outdoor air to replace indoor air, thereby significantly reducing the exhaust of indoor air and achieving the purpose of energy conservation and emission reduction. The components of the present invention are specifically adjusted according to different application sites or types of pollutants, and their appearance and component design may be adjusted, but the core of the above remains unchanged.

2. According to claim 1, the pressurizing fan, as a core key component, is used to drive outdoor air in and generate negative pressure and high-speed airflow through the constriction tube and guide airflow through the air outlet near the exhaust hood. In some cases, other systems or equipment that can generate jet airflow can be used to replace this pressurizing fan, such as using a high-pressure fan or compressed air to generate high-speed airflow. However, in any form, it is within the scope of protection of this claim.

3. According to claim 1, the exhaust hood, as a core component, is used to collect pollutants and form a guided airflow with the outdoor air delivered by the pressurized fan described in claim 2, to mix, guide, and capture pollutants to the exhaust hood outlet. The exhaust hood can be made with an internal sealed cavity and an air outlet for delivering outdoor air, or it can be made separately, or depending on the situation, it can be without a cavity or replaced with an exhaust outlet. However, in any form, it is within the scope of protection of this claim.

4. According to claim 1, the converging tube component, as a core key component, functions to accelerate the outdoor air delivered by the pressurized fan described in claim 2 using the principle of converging tube, to form a negative pressure at the exhaust hood to draw in pollutants, and to quickly remove pollutants using the high-speed jet airflow generated by the converging tube. The converging tube component is usually converging in form, and can be adjusted according to specific circumstances. High-speed airflow can be formed using a high-pressure fan or compressed air, but no matter how it is adjusted, it is within the scope of protection of this claim.

5. According to claim 1, the exhaust fan, as a core component, is responsible for discharging the pollutant mixture from the pressurized fan to the outside; it is configured according to the needs of the actual application scenario.

6. According to the above claims, typical application scenarios of the present invention include residential kitchens, civilian kitchens and canteens for exhausting cooking fumes, warehouses or bathrooms and other places that require ventilation, but are not limited to the above scenarios. The present invention is applicable to any scenario where indoor pollutant emissions and places that require ventilation can utilize the present invention.

7. According to the above claims, the core system solution of the present invention is to use outdoor air to replace most of the indoor air to remove pollutants, and is protected by this claim; in addition, any product design that uses the core key components described in this claim or other product designs that replace the functions of the core key components described in this claim to implement products or systems with similar functions to the present invention is an infringement.

8. Any design, manufacture, production, sale, or installation of standardized or unstandardized products using the core system scheme or core key components of this invention based on the above rights shall be considered an infringement.

9. Based on the above rights, if the same functional effect is achieved by substantially the same means using the technical features of this invention, it shall be deemed as equivalent infringement.

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