CN102853476A - Safe and efficient gas water heater with automatic humidification function - Google Patents

Abstract

The patent of the present invention relates to an automatic humidifying safe and high-efficiency gas water heater, which belongs to the gas hot water heating system. A closed combustion system is embedded in the inner cavity of the hot water radiator, and the gas is transported to the combustion device, where it is burned and the water is directly heated for heating. The upper part of the radiator water tank is provided with a water vapor escape port to realize the automatic humidification function. The entire combustion system is completely closed, and only communicates with the outdoor atmosphere through air ducts and exhaust ducts. The flue gas is exhausted to the outside through a micro-induced fan, without consuming indoor oxygen, without using mechanical air supply, and using the rotating jet gas nozzle and the rated pressure of the gas itself. Realize drive-free full premixed combustion. The gas intake pipe is built in the air duct and is connected to the gas source from the outside. The gas water heater described in the patent of the invention is safe and comfortable, highly efficient and energy-saving, low in cost, noiseless, capable of humidification, beautiful in appearance, economical and applicable, and suitable for decentralized heating.

Description

Automatic humidification safe and efficient gas water heater

technical field

The patent of the invention relates to a gas-fired hot water heating system, especially a safe and efficient gas-fired water heater integrated with a gas burning device and a hot water radiator.

Background technique

At present, the way of using gas for heating can be divided into centralized heating method and decentralized heating method according to the spatial position of gas burning device and heat dissipation device. The heating method in which the hot water radiators in each heating space dissipate heat is the central heating method, and the gas is directly transported to the combustion device in each heating space, and the heating method in which the direct combustion and local heat release is the decentralized heating method. The central heating method is safe, comfortable, clean and hygienic, but the system is complicated, there are many equipments, the cost is high, and the efficiency is low. It needs professional design and installation, which damages the decoration and affects the appearance. It is inconvenient to maintain later, and it needs to consume electricity to drive the water cycle and consider the problem of water antifreeze. It is suitable for areas that require central heating in northern my country and places that require large-scale continuous heating such as large-scale public buildings and hotels in the south. Distributed gas heating methods such as gas heating furnaces or gas heaters are suitable for local temporary heating of households in hot summer and cold winter regions due to simple equipment, low cost, convenient installation, and quick start-up, but the air quality is poor and the exhaust gas temperature is high. The comfort level is low, the fan produces noise, and what is more serious is that some gas ovens directly consume indoor oxygen, and even discharge the smoke directly into the room, posing serious safety hazards. In addition, the above two gas heating methods all have the disadvantage of not being able to automatically humidify and easily drying the air.

Contents of the invention

The invention provides a safe and efficient gas-fired water heating system capable of automatic humidification. The system overcomes the shortcomings of the two existing gas-fired heating methods and integrates the advantages. The oven has the characteristics of simple equipment, low cost, flexible and convenient use, and also has the function of automatic humidification. The technical problems to be solved include drive-free fully premixed closed-type high-efficiency combustion technology and flue gas-water-air heat exchange enhancement technology.

The technical solution adopted by the present invention to solve the technical problem is: a gas burning device is embedded in the inner cavity of the hot water radiator, so that the gas burns in the closed combustion chamber, directly heats the water in the radiator, and then passes the heat through the outer surface of the radiator. Diffuse into heated spaces. The gas water heating system is mainly composed of a hot water radiator, a gas combustion system and a control and protection system. The hot water radiator of the present invention is composed of a sandwich water jacket made of a metal plate, with a flat rectangular inner cavity in the middle, the combustion device is hidden in the lower part of the inner cavity, and a flue gas heat exchange tube is arranged in the upper part of the inner cavity to strengthen the flue gas. -Water heat exchange and lower exhaust gas temperature, pipes communicate with the interlayer. Water is injected into the interlayer, and the upper part of the interlayer leaves a space for water supply and expansion, and is provided with a water injection port and a water vapor escape port. The water injection port is provided with small holes in the circumferential direction and internal threads. The steam escape outlet is a cock with an adjustable opening. The cock is concave and has external threads. There are pinholes in the middle and small holes in the circumferential direction. The cock is screwed into the water injection port. By screwing in the depth and angle, the opening of the water vapor escape port is adjusted to achieve adjustable automatic humidification. The lower part of the interlayer is provided with a water outlet for draining the water in the interlayer. The hot water radiator can double the heat dissipation area by hanging the flat plate interlayer along the thickness direction, and realize the water-air enhanced heat exchange. The external flat interlayer communicates with the main hot water radiator through the water connecting pipes provided at the upper and lower parts, and automatically realizes hot water circulation through natural convection. The combustion system of the present invention is mainly composed of an air duct, a combustion device, a flue gas chamber and a flue exhaust duct. In order to ensure no leakage of gas and flue gas, the main measure taken is to completely seal the entire combustion system inside the interlayer water jacket, and communicate with the outdoor atmosphere only through air pipes and smoke exhaust pipes. The smoke exhaust pipe is arranged on the top of the inner cavity of the main hot water radiator, and horizontally passes through the hot water interlayer and protrudes outside. A micro-exhaust fan is installed at the outlet of the smoke exhaust pipe to achieve micro-negative pressure combustion and further ensure that gas and smoke do not leak into the room. The air pipe is divided into a horizontal part and a vertical part. The horizontal part is set outside the smoke exhaust pipe to form a flue gas-air preheater. The vertical part turns at the back of the hot water radiator and connects downward to the combustion chamber at the lower part of the radiator inner cavity. Like this, the air required for combustion all comes outside, does not consume indoor oxygen. The core of the combustion system is the combustion device, including gas nozzles, zoom nozzles and combustion heads, which are placed in the combustion chamber at the lower part of the inner cavity of the hot water radiator. In order to achieve complete combustion in a confined space, it is critical to ensure sufficient air supply. In order to overcome the resistance of the air pipeline and realize sufficient air supply by using the pressure of the gas itself, it is necessary to strengthen the entrainment of the air by the gas jet. To this end, the gas nozzle adopts a rotating jet nozzle, which utilizes the rated pressure of the gas to rotate and inject the gas from the nozzle at high speed, entrains enough air from the air duct, and after being fully mixed and diffused by the nozzle, the high-efficiency flameless The infrared combustion head flows out to realize fully premixed and complete combustion. Due to the negative pressure in the combustion chamber and the enhancement of air entrainment by the rotating jet, the drive-free fully premixed combustion is realized. The gas intake pipe is built in the air duct and is connected to the gas source from the outside. The control and protection system of the present invention mainly includes ignition device, flameout protection, hot water temperature control, air humidity control, etc., again providing guarantee for the safe operation of the system. The invention adopts multiple technologies to thoroughly eradicate the safety hazards of the current gas-fired ovens and ensure clean and hygienic indoor air quality. And because the hot water natural convection is used to heat and humidify the room, and no water pump and fan are used, the thermal comfort is high, the environment is quiet and noiseless, the thermal efficiency is high, and the operating cost is low.

The beneficial effects of the invention are: safety and comfort, high efficiency and energy saving, low cost, no noise, humidification, beautiful appearance, economical and applicable.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a front view of an automatic humidifying safe and high-efficiency gas water heater.

Fig. 2 is a side view of an automatic humidifying safe and high-efficiency gas water heater.

Fig. 3 is a sectional view of an installation embodiment.

FIG. 4 is a schematic diagram of the connection between the extended heat dissipation surface and the main heat dissipation surface.

Fig. 5 is a sectional view of the water injection port and the cock.

Detailed ways

In the figure 1-nozzle, 2-nozzle, 3-mixing chamber, 4-combustion head, 5-exhaust pipe, 6-miniature exhaust fan, 7-horizontal part of air inlet, 8-vertical part of air duct, 9- Gas pipe, 10-ignition pin, 11-flame protection pin, 12-solenoid valve, 13-temperature sensor, 14-outer surface of radiator, 15-flue gas-water heat exchange strengthening tube, 16-hot water interlayer, 17- Water injection port, 18-drain outlet, 19-foot, 20-flue gas chamber, 21-outer wall, 22-power control button, 23-hot water-air enhanced heat dissipation hot water interlayer, 24-communication pipe, 25-cock

In Figure 1 and Figure 2, the gas is introduced from the outside through the gas pipe (9), passes through the nozzle (1), uses its own pressure to become a high-speed rotating jet, and entrains enough air from the air duct (8) communicating with the outside , after being fully mixed and diffused by the scaling nozzle (2), it is sent to the mixing chamber (3), and then burned by the combustion head (4); the fully burned flue gas rises in the flue gas chamber (20) and releases heat , and then discharge through the exhaust pipe (5) after exchanging heat with the flue gas-water heat exchange strengthening tube (15). The miniature exhaust fan (6) keeps the flue gas cavity (20) at a slight negative pressure. The flue gas heats the water in the hot water interlayer (16), and the hot water dissipates heat through the radiator outer surface (14). The temperature of hot water is controlled by temperature sensor (13) and electromagnetic valve (12). Utilize the cooperation of the water injection port (17) and the cock (25) to adjust the fugitive amount of water vapor and realize the automatic humidification of the air. The cock (25) can be manually or automatically. The flameout protection pin (11) is linked with the gas solenoid valve to ensure safety.

In the sectional view of the installation embodiment in Fig. 3, a hole is opened in the outer wall, and the sleeve composed of the smoke exhaust duct (5) and the air intake duct (7) is stretched out of the room. The gas pipe is embedded in the air duct (7). The gas connection is located outdoors.

In Fig. 4, when enhancing heat dissipation, a hot water-air heat dissipation hot water interlayer (23) can be hung outside the thickness direction of the radiator, and communicated with the main radiator through a communication pipe (24), and the water in it can be circulated by natural convection.

In Fig. 5, adjust the depth and angle of the cock (25) screwed into the water injection port (17) to control the area of the steam outlet, thereby controlling the amount of humidification. The cock (25) can be controlled manually or automatically.

Claims (5)

1. automatic humidification safe high-efficient gas water heating device, combustion gas is transported to the heating place, combustion (of oil) insitu, direct heating water, by high-efficiency radiator heat radiation and humidification, it is characterized in that: whole combustion system complete closed, only by air duct and smoke discharging pipe and outside atmosphere UNICOM, burner is built in board-like interlayer hot-water heating lumen of radiator, flue gas drains into outdoor by the mini fan, do not consume indoor oxygen, does not use mechanical air supply, utilize combustion gas self rated pressure to realize the moving full premix combustion of free drive, by the effusion realization humidification of water vapour in the radiator.

2. automatic humidification safe high-efficient gas water heating device according to claim 1, it is characterized in that: gas nozzle is a jet nozzle, and jet expansion is put into miniature cylinder with spiral grooves, combustion gas is penetrated along the spiral grooves rotation.

3. automatic humidification safe high-efficient gas water heating device according to claim 1, it is characterized in that: humidification is controlled by a cock with steam, cock is for falling matrix, external screw thread is arranged, the centre has pin hole, circumferentially having aperture, cock screws in the water filling port, water filling port band internal thread and circumferentially also have aperture.

4. automatic humidification safe high-efficient gas water heating device according to claim 1 is characterized in that: at radiator front thickness direction expansion area of dissipation, and plug-in dull and stereotyped hot water interlayer, the interlayer top and the bottom arrange water communicating pipe, by loose joint and main radiator UNICOM.

5. automatic humidification safe high-efficient gas water heating device according to claim 1, it is characterized in that: gas inlet pipe is built in the air channel, from outdoor access source of the gas.

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