10results about "Draught induction" patented technology

This utility model discloses a ventilation and anti-clogging device for a standby boiler dust collector, comprising: an inlet flue, an induced draft fan, a connecting assembly, and a limiting assembly. The induced draft fan is located at one end of the inlet flue. The connecting assembly includes a branch pipe located at the bottom of the inlet flue, with a first gate valve located in the middle of the branch pipe and a series pipe located at the bottom of the first gate valve. The limiting assembly is located at the output end of the induced draft fan and is used to restrict gas flow. The limiting assembly includes a first pipe located at the output end of the induced draft fan, with a second gate valve located at one end of the first pipe. Through the design of the branch pipe, the first gate valve, and the series pipe, this utility model allows the first gate valve to be opened during operation, enabling the induced draft fan of the adjacent operating boiler to draw away leaked flue gas and maintain a slight negative pressure inside the standby boiler. This eliminates the need to operate the standby boiler's induced draft fan, keeping the furnace and tail flue dry and thus avoiding wasted electricity.

The utility model discloses a kind of boiler induced draft equipment, including induced draft fan, air inlet pipe and air outlet pipe are equipped on the induced draft fan, the mouth of air inlet pipe is equipped with filter screen, dust collection head movable along XY axis is equipped above the filter screen, bristle is ringed and equipped at the bottom edge of dust collection head, the bottom of dust collection head is air inlet end and bristle contacts filter screen top surface, the top of dust collection head is equipped with the connecting pipe connected with external suction equipment. The utility model has the characteristics of automatically cleaning dust accumulated on filter screen, avoiding filter screen blockage induced draft fan air inlet pipe, improving air inlet efficiency, making boiler combustion more sufficient, to further improve the combustion efficiency of boiler etc.

The present disclosure provides a flow accelerator device comprising an inverted aerofoil-shaped cross-section formed by one or more panels, defining a leading edge, trailing edge, upper surface, and lower surface, where the lower surface extends further than the upper surface. Mechanically connected to a base fixed upstream of a duct, the device generates low pressure within the duct to enhance air extraction. By leveraging aerodynamic principles, the device increases airflow efficiency in chimneys, fireplaces, ventilation towers, and similar structures. Its application includes buildings such as residential houses, offices, and industrial facilities, providing effective airflow management and smoke extraction. The flow accelerator operates passively, requiring no external power, making it a sustainable solution for improving indoor air quality and smoke removal while maximizing energy efficiency.

The invention relates to a controlled air intake system for chimneys, in chimneys that have a lower fireplace and an upper outlet on which a cowl (4) with a series of perimeter slats (41, 42) is disposed. The cowl (4) is divided into an upper part (43) communicated with the fireplace by means of a conduit (1), and a lower part (44) that is separate from the upper part (43) and communicated with the air intake into the fireplace by means of a space (3) running along the length of the chimney.

The application belongs to the technical field of induced draft fan dampers, and discloses a boiler induced draft fan damper self-closing prevention device, which comprises a damper frame, damper plates movably installed inside both sides of the front end of the damper frame, door shafts fixedly and in a penetrating manner installed in the inner cavities of one side of the two damper plates, and the two door shafts are rotatably installed at the positions of both sides of the front end of the damper frame, and the top of the two door shafts extends above the damper frame; the door shafts, gear one, the threaded cylinder, the threaded rod, the rack plate, gear two, gear three, the driving motor and the supporting piece and the limiting piece arranged at the damper frame and the damper plate of the boiler induced draft fan can control and position the opening and closing states of the two damper plates, realize the effective self-closing prevention function of the damper plate, prevent the damper plate from gradually reducing the opening state due to vibration, prevent the increase of power consumption and even the damage of the induced draft fan, and prevent the occurrence of great economic losses.

The utility model relates to industrial energy -conserving technical field, concretely relates to a kind of energy -conserving system of feed heating furnace applied to propane dehydrogenation device, the system includes heating furnace main body, air blower, induced draft fan and heat exchanger;The outlet of air blower is communicated with the air inlet of heat exchanger by first pipeline, the air outlet of heat exchanger is communicated with the air inlet of heating furnace main body by second pipeline;The inlet of induced draft fan is communicated with the first preset position of flue outlet of heating furnace main body by third pipeline, the outlet of induced draft fan is communicated with the flue gas inlet of heat exchanger by fourth pipeline, the flue gas outlet of heat exchanger is communicated with the second preset position of flue outlet of heating furnace main body by fifth pipeline;Wherein, first preset position and second preset position are provided with grid or valve between it.Such, by forced ventilation optimization combustion efficiency, and in combination with flue gas waste heat recovery realizes propane dehydrogenation device feed heating furnace thermal efficiency promotion, energy consumption reduction and pollutant emission reduction.

The amount of waste heat recovered is increased without increasing the heat transfer area of ​​the latent heat recovery heat exchanger. [Solution] The HO gas (water vapor) contained in the combustion exhaust gas generated by combustion is recovered as drain (moisture) generated by heat exchange at the outlet of the latent heat recovery heat exchanger (latent heat recovery device) 14. This drain (moisture) is injected into the high-temperature exhaust gas section on the primary side of the latent heat recovery heat exchanger (latent heat recovery device) 14 and the exhaust heat recovery device 12, and on the secondary side of the heat source equipment (combustion device) 10 such as a boiler, and vaporized. This process is repeated multiple times, and the recovered drain (moisture) generated by the latent heat recovery heat exchanger (latent heat recovery device) 14 is circulated within the combustion exhaust gas system, making it possible to increase the amount of HO gas (water vapor) in the exhaust gas supplied to the latent heat recovery heat exchanger (latent heat recovery device) 14 to the amount that maximizes the latent heat recovery.

The invention relates to an air supply and flue gas exhaust device for closed-type gas fires (4), comprising a pipe system (1) comprising at least an inner first pipe (2) for flue gas exhaust and an outer second pipe (3) for air supply, wherein the pipe system (1) on the one hand ends in one or more coupling ends (5) for coupling with said gas fires (4) and on the other hand ends in one flue end (6), wherein, in use of the device, a fan (7) for forced discharge of flue gas from the first pipe (2) is placed on said flue end (6). The invention further relates to a method for air supply to and flue gas exhaust from one or more closed-type gas fires (4) in a building, in particular in an apartment building. In addition, the invention relates to a system comprising one or more closed-type gas fires (4) and a device for air supply and flue gas exhaust, a kit and specific uses.

A heating system is configured to produce heated fluid. The system includes a source of primary fluid, a diffusing structure comprising an outlet structure out of which the heated fluid flows, at least one conduit coupled to the source and the diffusing structure and configured to introduce to the diffusing structure the primary fluid, and an intake structure coupled to the diffusing structure and configured to introduce to the diffusing structure a secondary fluid accessible to the system. The heated fluid includes the primary and secondary fluids.