130results about How to "Improve smoke extraction efficiency" patented technology

The invention relates to the technical field of fire disaster ventilation and smoke exhaust, in particular to a fire disaster ventilation and smoke exhaust method for an underground station platform adopting subway full-closed station platform doors. The method comprises the steps that one of an upgoing side tunnel and a down side tunnel is selected as an auxiliary smoke exhaust tunnel; a row of smoke exhaust valves is arranged above the platform doors; the smoke exhaust valves on the side of the auxiliary smoke exhaust tunnel are opened for smoke exhaust; upgoing side interval tunnel fans anddown side interval tunnel fans are started for smoke exhaust; station tunnel heat exhaust fans are started for smoke exhaust; and station large system fans are started for smoke exhaust. According tothe fire disaster ventilation and smoke exhaust method for the underground station platform adopting the subway full-closed station platform doors, smoke generated during a fire disaster can be exhausted in time, the smoke exhaust efficiency is effectively improved, and the safety of personnel is guaranteed.

The invention relates to a sectional type tunnel smoke exhaust system by water curtain separation, comprising a smoke exhaust duct, a smoke exhaust vent and an air valve. The smoke exhaust duct is positioned on the top or the side wall of a tunnel; the smoke exhaust vent is communicated with the smoke exhaust duct; the air valve is installed on the smoke exhaust vent; and the top or the side wall of the tunnel is provided with devices used for forming fire control water curtains. The invention also provides a smoke exhaust method which uses the sectional type tunnel smoke exhaust system. The smoke exhaust method comprises the following steps of: starting the devices which are used for forming the fire control water curtains and positioned on both sides of a fire source to form the water curtains and separating smoke gas generated by the fire source between the two water curtains; and starting the smoke exhaust vent which is positioned near the fire source to exhaust smoke. The invention has the advantages of optimizing the smoke exhaust effect of a highway tunnel, improving the smoke exhaust efficiency under the condition of the same smoke exhaust configuration, reducing the range of smoke gas influence, effectively controlling the diffusion of smoke gas within 200 meters, greatly reducing the heat radiation near the fire source and supplying better safety space for people escape and fire control.

Disclosed is an air supplementing and smoke control energy-saving system for a home building kitchen. A smoke exhaust way is connected with a smoke exhaust ventilator through a smoke exhaust branch pipe, and is arranged in an air supplementing way; the air supplementing way is connected with an electric valve in series connection with a smoke exhaust ventilator motor and a concave air supplementing box placed on a cooking bench through an air supplanting branch pipe; the sinking portion of the air supplementing box corresponds to an air exhaust cover of the smoke exhaust ventilator, and a cooking range is placed on the sinking portion; a rectangular-ambulatory-plane air supply opening is formed in the upper portion of the air supplementing box; the home building adopts the system, when the smoke exhaust ventilator runs, the kitchen is subject to air supplementing through the air supplementing way and the air supplementing box, and indoor air is not affected by supplemented air, and can be kept clean; during cooking in winter, outdoor cold air cannot intrude into the kitchen from the window and door gap, and indoor heat losses are small; cold air in the air supplementing way can exchange heat with the high-temperature smoke in the smoke exhaust way, and the air supplementing temperature is improved; an air curtain is formed on the periphery of the cooking range by the supplemented air, lampblack diffusion is prevented, the smoke exhaust efficiency of the smoke exhaust ventilator is improved, and gas combustion is promoted.

The invention discloses a double-cavity range hood with an air curtain, and belongs to the technical field of kitchen appliance equipment. The double-cavity range hood comprises a smoke sucking cavityand an air curtain cavity isolated from each other; a smoke sucking impeller is arranged in the smoke sucking cavity; an air curtain impeller is arranged in the air curtain cavity; and the smoke sucking impeller and the air curtain impeller share one double-shaft motor. Lampblack is discharged through the smoke sucking impeller in the smoke sucking cavity, and external air is guided in through the air curtain impeller in the air curtain cavity to form an air curtain, so that smoke overflowing is effectively prevented, and the smoke discharge efficiency is improved; and the smoke sucking impeller and the air curtain impeller share one double-shaft motor, so that no additional motor is added, the energy is saved, the noise is reduced, and meanwhile, the cost is reduced.

The invention discloses a filter screen of a range hood. The filter screen is characterized by comprising a plurality of ventilation surfaces which are arranged side by side from left to right, wherein each ventilation surface is a concave surface with high left and right sides and a low middle part; a plurality of meshes are formed in the two side surfaces of each ventilation surface; the concave part in the middle of each ventilation surface forms a drainage trough; the concave depth of each ventilation surface is gradually increased from the front end to the back end. The filter screen is provided with the plurality of ventilation surfaces with the high two sides and the low middle part side by side and the meshes are formed in inclined planes of the ventilation surfaces, so that the filter screen has a larger area for oil fume to pass through compared with a planar filter screen, and the exhaust efficiency is improved; besides, the oil fume can collide with the side surfaces of the ventilation surfaces for a plurality of times when passing through the filter screen, so that grease can be easily condensed on the ventilation surfaces and flow into an oil cup along the drainage troughs; moreover, because the oil fume collides with the filter screen for a plurality of times, the oil fume flow can be scattered, and then the rectifying effect of the oil fume passing through the filter screen is improved.

The invention discloses an indoor air conditioning method. Based on the indoor air conditioning method comprising an exhaust fan, a fresh air fan and a circulating fan, the method comprises the following steps of acquiring state parameters of a range hood in an action space of air treatment equipment; and when the state parameters are in an opening state, controlling the exhaust fan to be started, controlling a bypass valve to be opened, and controlling the circulating fan to be started, wherein when the circulating fan is started and the bypass valve is opened, outdoor fresh air enters the space through a circulating air duct, and when the exhaust fan is started, indoor air is exhausted out of the outdoor environment through an exhaust duct. The invention further discloses an indoor air conditioning system and a computer readable storage medium. The indoor air conditioning method, the indoor air conditioning system and the computer readable storage medium aim to improve the smoke exhaust effect of the range hood during operation.

The invention discloses an intelligent control method and an intelligent control system for discharging oil fume. The intelligent control method for discharging the oil fume comprises the following steps: collecting the oil fume amount of an environment where a range hood is located and a wind pressure value in an oil fume well which is communicated with the range hood at regular times; calculating a wind power value that the range hood requires to work according to the oil fume amount and the wind pressure value which are collected; controlling a wind wheel of the range hood to reach a fit rotating speed according to the calculated wind power value. According to the intelligent control method and the intelligent control system for discharging the oil fume, disclosed by the invention, reasonable wind power level can be calculated according to the oil fume amount of the environment where the range hood is located and the wind pressure value in the oil fume well which is communicated with the range hood, and the rotating speed of the wind wheel can be adaptively regulated, so that the oil fume discharging efficiency can be increased.

The invention discloses an integrated stove with an oil pollution decomposition device and a method. The integrated stove with the oil pollution decomposition device comprises an integrated stove body, a smoke collecting cavity, a smoke exhaust pipe and an air outlet wind duct are arranged in the integrated stove body, a box body is arranged under the air outlet wind duct, and an anti-backflow pipe is arranged at the bottom of the smoke exhaust pipe. A mixing mechanism is arranged in the box body, a water delivery system is arranged on the side surface of the box body, a decomposition liquid storage mechanism is arranged above the air outlet wind duct, and a testing mechanism is arranged on the side surface of the box body. The method comprises the steps of the installation of the box bodyand the mixing mechanism, the installation of the anti-backflow pipe and an air outlet cover, the installation of the water delivery system, the installation of the decomposing liquid storage mechanism, the installation of the testing mechanism, the installation of a burner and a smoke guide plate and the trial operation of the integrated stove. According to the integrated stove with the oil pollution decomposition device and the method, through the design of the anti-backflow pipe, liquid in the box body can be prevented from being absorbed inversely while oil fume is discharged, the bottomend of the anti-backflow pipe is immersed in the liquid, the contact area between the adsorbed oil fume and the liquid can be increased, and the adsorption and decomposition efficiency of the oil fumein gas is improved.

The invention discloses a smoke exhausting device. The smoke exhausting device comprises a cover body and an airflow generating device, wherein the cover body comprises a smoke absorbing surface plate; a first jet flow port, a second jet flow port and a smoke absorbing channel are arranged at intervals on the smoke absorbing surface plate; the smoke absorbing channel is positioned between the first jet flow port and the second jet pot; a smooth curved surface is formed at an inlet side edge of the smoke absorbing channel; the jet flow outgoing direction of the first jet flow port and the jet flow outgoing direction of the second jet flow port both face the curved surface; the airflow generating device is used for inputting airflow into the cover body; the first jet flow port is used for converting the airflow into first jet flow and jetting to an inlet of the smoke absorbing channel; the second jet flow port is used for converting the airflow into second jet flow and jetting to the inlet of the smoke absorbing channel; the curved surface is used for turning the first jet flow and the second jet flow into the smoke absorbing channel in order to form a negative pressure area at the inlet of the smoke absorbing channel. Therefore, the smoke absorbing range of the smoke exhausting device can be expanded, and oil smoke is hardly outwards dispersed.

The invention relates to the field of oil fume exhaust equipment, in particular to environment-friendly oil fume exhaust equipment for a large kitchen. The equipment comprises an air bellow, a motor is fixed in the air bellow, the end of an output shaft end of the motor is fixedly connected with an impeller, the two sides of the air bellow are symmetrically fixed and communicate with exhaust barrels, and the ends, away from the air bellow, of the two exhaust barrels communicate with an oil fume exhaust header pipe. Filter screens are fixed to the inner walls of the two exhaust barrels, and a brushing mechanism used for cleaning the filter screens is arranged between the two exhaust barrels. A cleaning mechanism used for flushing the filter screens is arranged between the two exhaust barrels, and the brushing mechanism is in transmission connection with the cleaning mechanism. According to the environment-friendly oil fume exhaust equipment for the large kitchen, the oil fume exhaust efficiency is improved, the risk of complete shutdown of the equipment is reduced, the filter screens are prevented from being blocked, and therefore the efficient passing ability of the filter screens is always kept, and then the oil fume filtering effect and efficiency are improved.

The invention discloses an intelligent automatic monitoring, fire extinguishing and smoke exhausting device and method for a highway tunnel. The device for implementing the method comprises an infrared thermography temperature measurement module, a pipeline bracket, a self-smoke-exhausting corridor standard section and a self-smoke-exhausting corridor tunnel outer section. Based on the infrared thermography temperature measurement technology, the temperature of tires of a vehicle running in a tunnel and the temperature outside a compartment are measured, the vehicle with the tires on fire is positioned, and a fire extinguishing agent pipeline with a directional spray head and a self-smoke-discharging pipeline with a directional smoke discharging port are arranged in the tunnel; infrared thermography temperature measurement modules are arranged on the two sides of the inner wall of a tunnel structure at fixed intervals. A self-smoke-discharging corridor is arranged on the top of the inner wall of a tunnel in a full-length mode and led to the outside of the tunnel, directional smoke discharging ports are reserved in the bottom of the corridor according to fixed intervals, and after the position of a fire vehicle in the tunnel is positioned, a smoke discharging port opening and closing control module opens the directional smoke discharging ports near the fire position; the problem of smoke exhaust in the tunnel is solved, and the purposes of energy conservation and smoke exhaust are achieved.

Disclosed is a building center flue system. The system comprises extractor hoods installed at different floors. An air outlet of each extractor hood communicates with a public flue through a corresponding smoke tube. An air outlet channel vertically and directly communicates with an outlet of the public flue is installed on a roof. The system is characterized in that the caliber of the air outletchannel is larger than the caliber of the public flue, at least two independently-working flue fans are installed inside the air outlet channel, and the flue fans are arranged at the position close tothe inner wall of the air outlet channel so as to avoid airflow exhausted from the outlet of the public flue. The system has the advantages that outdoor smoke exhaust power of the building center flue system adopts combination of multiple fans, the flue fans are arranged at the position close to the inner wall of the air outlet channel and avoid the airflow exhausted from the outlet of the publicflue, the arrangement of the fans is more reasonable and scientific and applicable to various complex installation environments, the smoke exhaust resistance of the system is small, the system is higher in smoke exhaust efficiency, saves more energy, and is higher in reliability, and the fans are longer in service life.

The invention discloses a smoke discharging system for a plasma cutting machine, and relates to the technical field of smoke discharging. A grid is arranged at the upper portion of a cutting table ofthe plasma cutting machine. A plurality of vertical partition plates of the grid are arranged in the extending direction of the cutting table. A smoke gathering channel is formed between every two adjacent vertical partition plates. The smoke discharging system comprises an air suction device. The air suction device comprises a first sliding air suction end and a first sliding air flue which are used in combination, wherein the first sliding air suction end is arranged on a sliding frame, an air suction port of the first sliding air suction end is right opposite to a port of the smoke gathering channel, and the first sliding air flue is connected to a dust remover through an air pipe. The efficient smoke discharging system for the plasma cutting machine is provided. By means of the smoke discharging system, smoke generated in the plasma cutting machine cutting process can be effectively collected and treated, air cleanliness of the machining area is guaranteed, and hurt to operators from smoke is reduced.

The invention provides a subway station atrium fire smoke exhaust system and method based on an electric ceiling screens. The smoke exhaust system comprises a platform layer and a station hall layer, wherein the platform layer is located underground, the station hall layer is located on the ground, a through atrium area is arranged in the middles of a public area of the platform layer and a public area of the station hall layer, smoke exhaust ports are formed in the top of the public area of the station hall layer, an atrium smoke exhaust port is formed in the top of the atrium area, outside the atrium area, telescopic electric ceiling screens are arranged at the top of the public area of the station hall layer, and air supply outlets are further formed in the top of the public area of the platform layer. According to the control method, according to different conditions, air outlets, air supply outlets and the ceiling screens of the public area of the platform layer and the public area of the station hall layer are selectively opened to be tightly matched with smoke outlets of the atrium, so that the smoke exhaust effect is optimized, and better evacuation conditions are provided for personnel in the station.