383 results about "Fire damper" patented technology

A trim assembly for a fire protection system valve includes a mounting member and a piping assembly supported by the mounting member. The piping assembly includes a priming line with an inlet for receiving priming fluid from a fire suppressant fluid supply line and an outlet for delivering priming fluid to a priming chamber of the fire protection system valve. The inlet and the outlet are provided at the mounting member. The piping assembly also includes a component, which responsive to a control signal and/or a pressure differential. The component redirects priming fluid away from the outlet of the priming line in response to the control signal and/or the pressure differential for controlling the delivering of priming fluid to the priming chamber of the fire protection system valve. The piping assembly further includes a discharge outlet, with the priming line discharging the priming fluid to the discharge outlet when the component directs priming fluid away from the outlet of the priming line, which is preferably provided at the mounting member.

The invention relates to a heating control method of an air conditioner. The method comprises the following steps of powering on the air conditioner, and entering a heating mode; adopting an outdoor machine to detect an outdoor ambient temperature T3, and adopting an indoor machine to detect an indoor ambient temperature T1; enabling an air damper and an air guide angle of the indoor machine to be operated according to the setting of a user or to be operated according to a preset value, and enabling the air damper and the air guide angle of the indoor machine to be operated in priority according to a cold-air preventing mode if the cold-air preventing mode is needed; enabling an indoor fan to enter a high-air running mode if T3A is more than T3 and T1 is more than T1A, and adopting a cold-air preventing angle mode for an air guide angle of the indoor fan; withdrawing from the high-air running mode, and enabling the air conditioner to run the air damper according to a normal cold-air preventing mode; and enabling the air conditioner to enter a set air mode according to the normal cold-air preventing mode if T3 is less than T3A and T1 is more than T1A. By adjusting the operation mode of the air conditioner, the thickness of an oil membrane of a running part of a compressor can be efficiently increased, the thickness and viscosity of the oil membrane of the air conditioner under a worst working condition can be guaranteed, the reliability of the compressor is improved, and the operation reliability of the air conditioner can be guaranteed.

A gas flow interrupter for a gas meter, the interrupter comprising a valve member that is movable relative to a valve seat which defines an opening for passing said gas flow, said valve member comprising firstly a membrane having a main surface including a "contact zone" portion that comes into contact with said valve seat when the interrupter is in its closed position, thereby closing said opening by means of the main surface of the valve member, and secondly a part that forms a mechanical support for the membrane and that co-operates with said membrane, wherein the metal part forming a support for the membrane has a continuous leakproof surface bounded by the contact zone so as to close the opening in the event of the membrane failing to provide sealing.

A pneumatic fuel distributor for solid fuel boilers is described incorporating in various embodiments one or more of the following features: a converging nozzle section, a converging adjustable orifice section and an integral trajectory plate. The nozzle, orifice and trajectory plate are preferably all interconnected and rotate together about a common axis. The orifice damper is, in one embodiment, a rotating convergent section and independently adjustable. The unit preferably incorporates a viewing glass and access port and the rotating components are preferably removable for maintenance. The unit is preferably reversible for left or right hand installation and the trajectory plate is easily replaceable.

The invention discloses a ventilation, smoke discharge and evacuation system for an underwater single-tube double-layer shield traffic tunnel. The ventilation, smoke discharge and evacuation system comprises an upper-layer lane, a lower-layer lane, a jet fan and a wind tower. An axial flow fan is arranged in the wind tower. A sector space on one side face of a round shield section of the tunnel is an independent smoke discharge channel. An escape channel is arranged in a sector space on the other side of the round shield section of the tunnel. A staircase connected with the upper layer and the lower layer is arranged in the escape channel. An upper-layer front room is arranged between the staircase and a lower-layer escape door. A lower-layer front room is arranged between the staircase and an upper-layer escape door. Positive pressure fans are installed on the wall shared by the upper-layer front room and the staircase and the wall shared by the lower-layer front room and the staircase respectively. The upper end of the side wall of the tunnel is provided with an upper-layer smoke outlet and a lower-layer smoke outlet. The upper-layer smoke outlet and the lower-layer smoke outlet are respectively provided with an automatic smoke discharge fire damper. By means of the ventilation, smoke discharge and evacuation system, fire smoke can not diffuse between the upper layer and the lower layer, the visibility of the escape environment is good, the escape environment is not invaded by the smoke, personnel evacuation is efficient and quick, escape time is greatly shortened, personnel casualties are reduced, construction is safe, and later-period maintenance is easy.

A fire containment and monitoring system includes a control system that communicates with a fire protection system and an array of alarms, smoke detectors, heat detectors, ventilation dampers, fire dampers, fire doors, and manual call points. The system has particular usefulness for kitchens onboard watercraft, especially large ships, where fire containment is critical to the survivability of the vessel, passengers, crew, and cargo. The control system communicates with the alarms, smoke detectors, heat detectors, ventilation dampers, fire dampers, fire doors, manual call points, and fire protection system, and it initiates a comprehensive list of actions if a smoke detector, a heat detector, or a manual call point is triggered within the monitoring portion of the system.

The invention relates to an energy-saving safe and intelligent combined type accurate constant temperature and humandity equipment cabinet which is placed on the ground of a machine room as a special equipment cabinet. The energy-saving safe and intelligent combined type accurate constant temperature and humandity equipment cabinet comprises an equipment cabinet body, an air conditioner main air supply pipe, more than one air conditioner branch air pipe, a fire-fighting air bottle, an extinguishing air intake pipe, an air supply fan, an air return fan, a smoke venting fire resisting damper and an intelligent control system, wherein the air conditioner main air supply pipe is connected with an air conditioner and the equipment cabinet body; the air conditioner branch air pipe is arranged between the air conditioner main air supply pipe and the equipment cabinet body; the fire-fighting air bottle is arranged on the equipment cabinet body and is stored with inerta extinguish gas; the extinguishing air intake pipe is arranged between the fire-fighting air bottle and the equipment cabinet body; the air supply fan is arranged under the equipment cabinet body; the air return fan is arranged above the equipment cabinet body; the smoke venting fire resisting damper is arranged above the air return fan; and the intelligent control system is used for controlling the constant temperature and humadity in the equipment cabinet accurately and fire-fighting and extinguishing. The realization of accurate cool air supply enables the power sonsumption of the air conditioner equipment in a large scale data center to decrease greatly, and energy resources are saved.

The invention provides a manufacturing method of integrated square fire-resisting damper valve buckle body molding, comprising the following process steps: carrying out blanking on a complete board with a plate shearing machine according to the ordered size of the valve body and cutting into a rectangular panel veneer; carrying out working procedure processing like corner cutting, notching, punching and the like on the panel veneer with a press tool; performing bending operation of the flange edge at the two sides of the panel veneer with a bending machine; carrying out molding operation on the square frame body with a valve body molding device; and finally adopting welding or riveting operation at the seam position to finish the processing of the valve body frame body in the end. The invention has the following advantages: the method only needs shearing the board once, and the manufacturing can be completed through press working; compared with the current board-shearing and tailor welding four times, the method in the invention leaves out a plurality of working hours and reduces the disadvantages of size deformation; the total processing time of the frame body can be saved by 59.5%, thus the cost of the valve body is substantially lowered; the integrated board is under press working with almost no deformation; and welding is only carried out on the joint at one side, and the generated air leakage rate of the weld porosity is reduced to 25% of the original air leakage rate.

Automatic fire extinguishing equipment of a fume hood includes a cabinet having a workbench, a vent pipe, and ventilation equipment. In front of the cabinet is a window panel. Top rim of the workbench has first and second detection elements, and automatic fire extinguishing equipment mechanisms. The ventilation equipment contains a fire damper. When fire occurs at the workbench from experiments, the first detection element detects a fire signal first to issue alarming sound (or alerting flash) promptly, the ventilation equipment shutdowns, with the fire damper closed for closing the vent pipe. When the second detection element detects a smoke or high temperature signal, the window panel is closed, with the automatic fire extinguishing equipment mechanisms activated automatically to terminate flame, thereby preventing thick smoke or flame from channeling into the vent pipe to spread the fire, and preventing the fume hood from starting a cascade of fire.

Disclosed is a range hood fire valve. The range hood fire valve comprises a housing, in which an oil fume channel is formed; the oil fume channel is provided with an air inlet and an air outlet which are oppositely arranged; the inside of the oil fume channel is provided with a radial mounting shaft and a rotating valve block, wherein the valve block is mounted on the mounting shaft and can open and close the air inlet. The range hood fire valve is characterized in that the mounting shaft is provided with a first torsional spring and a second torsional spring; the first torsional spring acts on the rotating valve block all the time and enables the air inlet to obtain a tendency to being closed; the second torsional spring is provided with a fusing module and acts on the rotating valve block and enables the air inlet to obtain a tendency to being closed only when the fusing module is fused. The range hood fire valve has the advantages that, the internal mounting shaft is provided with the first torsional spring and the second torsional spring, so that when the fusing module is fused, the action forces of the first torsional spring and the second torsional spring are superpositioned and are sufficient to overcome pressure at the air inlet, so that the air inlet can be closed more reliably.

The invention discloses a nitrogen automatic fire fighting system for a sealed cable tunnel. The system comprises the sealed cable tunnel which is provided with an air vent, wherein the air vent is provided with a ventilating device and a fire valve; the cable tunnel is internally provided with a temperature sensor; the temperature sensor is electrically connected with an alarm controller; a nitrogen spraying pipeline penetrates through the cable tunnel; nitrogen spraying devices are distributed on the nitrogen spraying pipeline; the nitrogen spraying pipeline is communicated with a nitrogen delivery pipeline which is communicated with a nitrogen source; the nitrogen delivery pipeline is connected with a nitrogen release valve in series; and the nitrogen release valve is electrically connected with the alarm controller. The fire fighting system can be used for rapidly and effectively extinguishing cable fire hazards. By utilizing the fire fighting system, electrical hazards such as grounding, short circuit and shotfiring cannot occur, the purpose of safely extinguishing fire is achieved, the purpose of cleanly extinguishing fire is also achieved, an complex operation of cleaning superfine dry powder for a long time is omitted, and power supply can be rapidly recovered.

The invention discloses a flexible air damper assembly for an air conditioner and the air conditioner and relates to the technical field of air conditioners. The flexible air damper assembly for the air conditioner aims to solve the problem that in the prior art, an air damper of an air conditioner occupies a large space of an air channel. The flexible air damper assembly for the air conditioner is used for controlling air outlets of the air conditioner to be opened or closed. The flexible air damper assembly comprises rotating shafts and flexible air dampers wound around the rotating shafts. The upper edge of each flexible air damper is fixed to the corresponding rotating shaft, and the lower edge of each flexible air damper is connected with a supporting piece. The flexible air damper assembly for the air conditioner further comprises a drive assembly. The drive assembly is connected with the rotating shafts the supporting pieces. The drive assembly can drive the rotating shafts to rotate so as to wind up or unwind the flexible air dampers. The drive assembly can drive the supporting pieces to move synchronously along with the lower edges of the flexible air dampers. When the flexible air dampers are unwound, the air outlets of the air conditioner can be shielded, and the supporting pieces can prevent the lower edges of the flexible air dampers from being blown up. The flexible air damper assembly for the air conditioner and the air conditioner can be used for indoor air conditioning.

The invention relates to an electrostatic lampblack purifying device capable of automatically sprinkling to extinguish fire, which can overcome the problem that the traditional electrostatic lampblack purifying device with a fire-fighting mechanism can not be protected in power-cut. The electrostatic lampblack purifying device comprises a shell, a front reducing air duct, a back reducing air duct, a direct-current high-voltage power supply, a honeycomb cylindrical electric field, a control box and a water-control sprinkling fire-extinguishment device, wherein the front end of the shell is hermetically connected with the front reducing air duct, the back end of the shell is hermetically connected with the back reducing air duct, and the front reducing air duct is further provided with a fireproof valve which is connected with a lampblack inlet and a direct exhaust valve through a tee air duct. Because the front end of the device is provided with the fireproof valve and the direct exhaust valve, an overtemperature control circuit can automatically close the fireproof valve and open the direct exhaust valve to exhaust lampblack when the temperature inside the device is detected beyond a set temperature. As a hydraulic control valve is adopted, fire-fighting water is opened by a mechanical device, therefore, flame detection and fire-extinguishment work can be normally carried out in power cut condition compared with a power-controlled fire-fighting valve.

The invention belongs to the technical field of drying of bulk materials, and particularly discloses a compartment type dryer. The compartment type dryer comprises a box body, an air damper, a heater and a tray, wherein an air inlet and an air outlet are formed in the box body; and the tray is a silk screen. The compartment type dryer is characterized by further comprising a fan and a ventilating duct, wherein one end of the ventilating duct is communicated with the air inlet; the other end of the ventilating duct is communicated with the air outlet; the fan is connected on the ventilating duct; a water absorbing device is arranged in the ventilating duct; the tray, the heater and the air damper are fixed in the box body; the air damper is positioned between the tray and the heater; and the heater and the air inlet are oppositely arranged. Hot air in the box body is recycled because of the ventilating duct, so that the heat utilization rate is high. The water absorbing device can effectively absorb water in hot air, so that humidity of hot air is kept within a proper range all the time, thereby increasing the drying effect.

A flue fire damper for a range hood comprises a fire damper bottom plate and a fire damper body. A fire damper piece is arranged on the fire damper body. The flue fire damper is characterized in that the fire damper body is provided with a first support and a second support, an elastic piece is arranged on the first support, and a deformation piece capable of generating corresponding deformation along with the temperature change is arranged on the second support; a forced closing rod is arranged between the first support and the second support, the first end of the forced closing rod is arranged on the first support, and under the state that the deformation piece does not deform, the second end of the forced closing rod is blocked through the deformation piece and limited on the second support; and under the state that the deformation piece deforms due to temperature rising, the forced closing rod disengages from the deformation piece and the second support, and the fire damper piece is forced to be closed through the elastic piece. The fire damper is simple in structure and stable and reliable in work. After a flue joint outer cover is arranged, the situation of flue blockage can be effectively reduced.

Latching apparatus for use with a fire damper assembly wherein extendable and retractable damper leaves normally are maintained by a fusible linkage in a position enabling air to flow through a duct. The fusible linkage may be coupled to and uncoupled from a damper-supporting frame so as to facilitate testing of the damper assembly to ensure it is capable of automatically moving from its passage-open position to a passage-closed position in response to a predetermined rise in ambient temperature. The latching mechanism is operable simply by squeezing a spring retainer to enable it to pass into and out of latched engagement with a latch keeper.

The invention relates to a special fireproof valve used in kitchen and toilet, wherein it comprises the divert tube at the inner side of gas inlet of ventilate tube; the lower end of divert tube is connected to the gas inlet; the fireproof cover plate is above the divert tube or inside the tube; the bottom of cover plate is put or hinged on the wall of divert tube and via fusion wires is fied on the wall of ventilate tube or divert tube; when the fusion is broken, the fireproof cover plate via gravity will fall back to the top of divert tube or the table of wall of diver tube, to seal the tube. The invention has simple structure, while it can be made from fireproof material or cement, with low cost.

The invention relates to a building fire-fighting intelligent smoke-discharge-prevention control system which comprises a fire-fighting control terminal, an intelligent smoke-discharge-prevention controller, a linkage controller, a cloud side database, a ventilation system, a signal transmitting module, a smoke discharge system and a smoke prevention system. A detector connected with the signal transmitting module detects smoke in a belonging space and transmits a detection result into the linkage controller in a form of signals, the linkage controller controls a ventilation controller so as to turn off a fireproof valve, meanwhile a ventilator is shut down, an alarm is started, the smoke discharge controller is controlled to switch on a smoke discharge valve and start a smoke blocking vertical wall and a smoke ventilator, meanwhile an air supplementing machine is started to rapidly discharge smoke, the fireproof controller is controlled to switch on a positive pressure air supply valve and a positive pressure air supplier, a positive pressure is formed in the belonging space, and smoke is prevented from entering the belonging space. The intelligent information exchange control over the fire-fighting smoke-discharge-prevention control system is realized, the automation degree is high, and actual demands of use are satisfied.

The invention discloses a fire resisting damper used for treating paint mist. The fire resisting damper comprises a body, shutters, rotating shafts and rotating shaft control valves. The rotating shafts are transversely arranged in the body at equal intervals. The shutters are fixed to the rotating shafts. The rotating shaft control valves are arranged at one ends of the rotating shafts and used for controlling the rotating shafts to move. The rotating shaft control valves are smoke control valves and/or temperature control valves. The rotating shafts are hollow pipes. Water inlet valves are arranged at the other ends of the rotating shafts. Water outlet holes are uniformly formed in the rotating shafts. The fire resisting damper has the advantages that when fires occur, the rotating shaft control valves control the rotating shafts to rotate, the rotating shafts drive the shutters to rotate to enable the fire resisting damper to be in a closed state as in the picture, airflow in a desorption bin or a catalyzing bin is cut off to enable the desorption bin or the catalyzing bin to be in closed space, the situation of combustible gas entering is reduced, and flames are prevented from entering the desorption bin at the same time; meanwhile, the water inlet valves are opened, and water enters or exits from the bin through the water outlet holes to achieve the extinguishment effect.

The invention discloses a fireproof retaining valve, comprising retaining valve tube. The retaining valve device is set at the air inlet of retaining valve tube and fireproof valve device, of which on-off is controlled by spring is set ate the air outlet of retaining valve tube. The fireproof valve device, of which on-off is controlled, comprises guiding shaft set on a bracket. The bracket is connected with the air outlet of retaining valve tube. The spring is set on the guiding shaft. The center of a fireproof door, which can close the retaining valve tube, is set between the spring and the guiding shaft. The free end of the center of fireproof door is connected with one end of melting piece controlled by temperature and the other end of melting piece controlled by temperature is connected with spring hook fixed on the bracket. The invention is provided with reasonable structure, good retaining valve action and fireproof action, convenient installation, long service life, stable performance and good effect.

The invention provides a multi-direction shape memory alloy, soft steel and lead combined drum-like damper and relates to a shock absorption control device in the technical fields of building structures and mechanical engineering. The damper comprises a drum-like shape memory alloy outer cylinder, a circular soft steel inner cylinder, an upper end plate, a lower end plate, a built-in lead damper and a superplastic shape memory alloy wire for coordinating the inner cylinder and the outer cylinder. The damper adopts the external drum-like shape memory alloy cylinder, the circular soft steel inner cylinder, the built-in lead damper and the superplastic shape memory alloy wire which is arranged like a Chinese character mi for coordinating the inner cylinder and the outer cylinder. The damper has the advantages of large recoverable deformation, strong damping capacity, good durability, anti-corrosion property and anti-fatigue performance, a large range of working temperature, low maintenance cost and the like, has the horizontal, vertical and torsional automatic reset functions, and can perform energy dissipation and shock absorption on wind vibration and earthquake in horizontal and vertical directions and further play a good protection role for a building structure when the earthquake and the wind vibration occur.

A fire collar or fire damper for location within a concrete slab of a building. The device incorporates a damper arrangement (12) and a heat detector (18, 19) comprising a metal alloy or lead which melts when a preset temperature is reached, causing the damper arrangement to seal off associated pipework or ducting.

The invention discloses a self-closing fireproof valve for gas fire protection. The fireproof valve comprises a valve shell made of a non-magnetized material, wherein a magnetic core controller capable of sliding along the outer wall of the valve shell is arranged outside the valve shell; a magnetic core and a sealing element which is used for sealing a gas outlet are arranged in the cavity of the valve shell; one end of the sealing element is adjacent to the magnetic core, and the other end of the sealing element is connected to a valve opening spring; an overheat protector is arranged outside the valve shell and is provided with a shell; the shell is provided with a sealed end and an open end; a compression spring alloy welding block is welded and fixed in the shell; and the magnetic core controller is statically fixed at the open end of the protector shell. In the fireproof valve, an overheat protection structure is improved; and the fireproof valve has a simple manufacturing process, a reliable overheat protection property and extremely high safety and gas tightness.