Environment-friendly gas-fired household heating device

Abstract

The invention belongs to the technical field of heating, and relates to an environment-friendly gas-fired household heating device. The heating device integrates the functions of a gas stove, a range hood and a heating system; through the range hood, cooking fume and steam enter an air inlet pipe via an air collecting hood; a fuel gas enters the air inlet pipe through a fuel gas pipe and a fuel gas valve, and then is mixed with air, the cooking fume and the steam to form a fuel gas-mixed gas; the fuel-gas-mixed gas enters a furnace chamber, and is burnt in a combustor in a shunted manner; a fireback is heated for directly baking, roasting or frying, or a cooker is heated for cooking; a suction hood and the range hood have the function of the conventional range hoods; a combustion waste gas pushes open an exhaust valve to enter an exhaust pipe, and then is completely discharged outdoors; in the process when the combustion waste gas is discharged, a three-way valve is regulated according to indoor temperature to control the proportion of the combustion waste gas that enters the upper part of the exhaust pipe or a heat exchanger; after passing through the heat exchanger, the waste gas is used for heating the heating air; the heating air circularly heats the indoor air in the heating system, thus realizing heating; and the environment-friendly gas-fired household heating device disclosed by the invention has novel principles, simple structure, low cost and high heat efficiency, and is friendly to the environment, thus being suitable for household heating fields in rural areas.

Description

Technical field: [0001] The invention belongs to the technical field of household heating, and relates to an energy state conversion device, in particular to an environment-friendly gas-type household heating device with the mixing function of a gas stove, a range hood and a heater. Background technique: [0002] The structure and function of the existing range hood and the gas stove in the kitchen are usually independent of each other, and have the disadvantages of high cost, large space, inconvenient installation and maintenance, complicated control, high operating cost, poor energy saving and environmental protection effect, etc. The stoves are all open-type combustion. Natural gas, coal-made gas, liquefied petroleum gas or biogas are mixed with air and then ignited. They burn under the condition of less than or equal to the ambient atmospheric pressure. The air-fuel ratio in the combustion area is low, the excess air coefficient is less than 1, and the gas Insufficient c...

AI Technical Summary

Problems solved by technology

[0002] The structure and function of the existing range hood and gas stove in the kitchen are usually independent of each other, and have the disadvantages of high cost, large space occupation, inconvenient installation and maintenance, complicated control, high operating cost, poor energy saving and environmental protection effect, etc., and the traditional gas Stoves are all open combustion. Natural gas, coal gas, liquefied petroleum gas or biogas are mixed with air and then ignited. They burn under the condition of less than or equal to ambient atmospheric pressure. The air-fuel ratio in the combustion zone is low, and the excess air coefficient is less than 1. Insufficient combustion, the thermal efficiency is lower than 60%; when the gas is biogas, the smell produced by the combustion is unbearable; sometimes the food in the pot boils out to extinguish the flame, and the gas continues to go out, which is likely to cause poisoning or explosion Dangerous, the range hood does not burn and purify all kinds of smelly gases and fumes, but directly discharges them outside, polluting the outdoor environment

At present, the problem of heating in rural areas in winter has always affected people’s quality of life. Even if some houses have installed earth heaters, the exhaust pipe of the coal stove is used to heat the water in the radiator or directly heat the indoor air to increase the indoor temperature, but the waste heat of the combustion exhaust gas is not necessary at all. To use well, but also extremely unhygienic

In order to solve the above problems, many patented technologies have been published, for example: [1] Yin Fasheng. Internal Combustion Gas Cooker. ZL0221078.X, 20023-3-19; [2] Wang Zhanyi. Closed Gas Cooker. ZL93243708.7, 1995-7-5; [3] Liang Fuquan. Internal Combustion Multifunctional Cooker. 200510117651.X, 2006-7-12; [4] Hao Yi. Internal Combustion Smoke Exhaust Gas Stove for Safety, Energy Saving and Environmental Protection. ZL03239084.X, 2004-8 -11; [5] Zhang Hongxin, Zhang Tiezhu, Zhang Jipeng. Integrated internal combustion cooker with range hood and gas stove. ZL200710016128.7, 2009-01-21; when these technologies are implemented, the flame burns under the gas stove panel, and the burning exhaust gas is directly discharged Outdoor, it will not pollute the indoor air; patent [3] is equipped with a heat exchanger, using the waste heat of waste gas to heat tap water, which has a certain energy-saving effect; although patents [1], [2], [3], [4] have certain energy-saving and environmental protection effect, but it is not real internal combustion, and still has the most fundamental shortcomings of traditional gas stoves; the internal combustion principle of patent [5] is basically consistent with the internal combustion principle of the present invention; these existing technologies do not combine gas stoves, lampblack The three functions and structural principles of the machine and heating are integrated, so a new heat exchanger structure is designed and prepared to make it have better heat exchange efficiency, efficient and environmentally friendly multi-functional heating, and realize air, steam, oil fume and Mixed gas such as gas is burned in a closed space, under relatively high pressure, with a large air-to-fuel ratio and excess air coefficient. The pressure of the mixed gas is achieved by boosting the range fume fan, and the pressure is determined by the set pressure of the exhaust valve. , the furnace body adopts a double-layer hollow structure, the heat conduction, convection and radiation losses will be greatly reduced, the gas combustion will be more complete, and the exhaust gas will be directly discharged outside. During the discharge process, the air in the intake pipe or the heating gas will be heated. Realize the heating function

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