A Range Hood with Heat Recovery and Personalized Air Supply Functions

Abstract

The invention discloses a range hood with heat recovery and personalized ventilation functions. The range hood comprises a shell arranged on a side wall of a cooking bench. A clapboard for dividing an inner cavity of the shell into an upper cavity and a lower cavity is arranged in the shell; a double-layer louvered air outlet is formed in the front face of the shell on the lower cavity part; a smoke collecting cavity is arranged on the bottom face of the shell; a smoke inlet is formed in the bottom face of the shell on a groove part; an air exhaust fan is arranged in the lower cavity on the smoke inlet part; an air outlet of the air exhaust fan is connected with a heat exchanger and an exhaust pipe; an air inlet is formed in the shell on the upper cavity part; an air inlet of an air inlet fan communicates with the air inlet through a pipeline; an air outlet of the air inlet fan communicates with a cold air inlet of a four-way joint through a pipeline; and two heat exchange pipe ports and a hot air outlet of the four-way joint respectively communicate with a shell pass and a still pressure box of the heat exchanger. According to the device, the high-efficient smoke exhaust efficiency is ensured, and meanwhile, the recovery of smoke waste heat is realized, so that energy conservation and environment protection are achieved.

Description

technical field [0001] The invention relates to a range hood, in particular to a range hood with functions of heat recovery and individualized air supply. Background technique [0002] As the largest pollution source of indoor air, the harm of cooking fume to human health has attracted more and more attention. In urban households, cooking activities mostly use gaseous fuels, such as coal gas, natural gas, and liquefied petroleum gas. In the process of cooking food, the use of cooking oil, raw materials and seasoning will produce a lot of oily fume. According to the different forms, oil fume is divided into two parts: oil mist and gaseous pollutants. Oil mist is a mixture of liquid and solid total suspended particle pollutants. The particle size is mainly aerosol particles below 100 microns. This part of pollutants will be suspended in the kitchen air, including PM10, PM2.5, PM1 etc. Gaseous pollutants mainly include volatile organic compounds (VOCs), gaseous semi-volatil...

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Problems solved by technology

[0004] Chinese utility model patent CN 203413762 U has designed a heat recovery and heating air intake and exhaust system, including: exhaust hood, exhaust pipe, exhaust fan, oil fume purifier, exhaust outlet, fresh air pipe, induced draft fan, and fresh air outlet. Disadvantages of the design: 1) The volume of the product is too large, and it is not easy to arrange it in the current narrow kitchen space; 2) The product does not solve the problem of personalized air supply in the breathing area; 3) Using antifreeze liquid as the heat exchange medium, the heat The loss is large and the heat recovery efficiency is low; 4) The escape of oil fume is not considered, and the air quality in the breathing area of ​​the human body cannot be effectively improved

[0005] Chinese utility model patent CN 103062858 A designs an air-conditioning system for recovering kitchen heat, including: a refrigeration system, a ventilation system, and a power distribution control system. Arranged in the kitchen space; 2) This product does not solve the problem of personalized air supply in the breathing area; 3) Using heat pipes as the heat exchange medium, it cannot be used normally in summer and transitional seasons; 4) It does not consider the escape of oil fume and cannot be effective Improve the air quality in the human breathing zone

[0006] Chinese utility model patent CN 104764065 A designed a heat exchanger for recovering heat energy from kitchen fumes, including: heat transfer body, heat exchange medium, oil collection box and shell. The disadvantages of this design: 1) Use heat pipes as heat exchange medium , can not be used normally in summer and transitional season; 2) No heat exchanger is designed for fittings, which is inconvenient to install and use

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