9 results about "Maintaining ventilation" patented technology

The present application relates to a kind of mosquito-proof and ventilated method, belong to building component technical field, solve the same screen window or screen door screen grid size in prior art is same, can play the role of ventilation, but cannot sunshade, and cannot be connected with frame when screen window is closed or cannot be automatically locked the angle between screen window and frame when screen window is opened Problem.The mosquito-proof and ventilated method of the present application includes the following steps: A, installation building component;B, mosquito-proof and ventilated;C, open screen window body;D, close screen window body;E, complete ventilation.The weft of the upper part of the screen is more than the weft of the lower part, the mesh area of the upper part is less than the mesh area of the lower part, so that the light transmittance of the upper part of the screen is less than the light transmittance of the lower part, the upper part of the screen can block more sunlight, can sunshade while maintaining ventilation and can prevent mosquitoes.

A circulating backflow type air inlet parameter control device suitable for mine ventilation physical experiment belongs to the technical field of mine ventilation physical experiment, and comprises a multistage fan, an air source parameter adjusting unit, an air return filter, a PLC control cabinet, a central control console, a distributed sensor network and a static pressure buffer bin; the waste heat and moisture of the backflow air are pretreated in temperature, humidity and flow through the circulating backflow mode, the waste heat and moisture of the backflow air are recycled, the mine ventilation compensation mechanism is additionally arranged, the circulating backflow air after the precise regulation and control of the air source parameters is stably connected to the air inlet well under the constraint condition that the air inlet and outlet of the ventilation mine physical model are kept at atmospheric pressure without increasing the air inlet resistance, compared with the fresh air directly pretreated by the external environment in the traditional mode, the stability of the circulating backflow air can effectively shorten the air source regulation and balance time, can greatly reduce the equipment operation energy consumption and improve the experimental efficiency, and provides key technical support for the mine ventilation physical experiment with high simulation degree and low energy consumption.

The application relates to the technical field of medical instrument control, and discloses an intelligent control anesthetic gas delivery system, which comprises the following steps: when a target anesthetic concentration mutation is detected, the absolute mass gap is calculated based on a mechanical ventilation circuit dead space and an anatomic dead space; an effective feedforward time window of an electronic volatile tank is derived and generated according to basic setting parameters; an additional volume of gasified liquid medicine is calculated; the additional volume is inversely deducted and reconstructed from a target ventilation capacity of a turbine fan within the effective feedforward time window; a reconstructed flow trajectory is generated; an inspiration phase starting signal is used as a synchronous time zero point; a fan output airflow is synchronously driven; a driving pulse is issued to the volatile tank to spray medicine; a double boundary cut-off judgment of time and mass dimensions is executed in real time during the spraying process; the medicine spraying is cut off when any cut-off condition is met; and the fan maintains ventilation until the end of the inspiration phase. The application eliminates the deviation of gasification expansion on the tidal volume, and avoids overshoot of concentration adjustment.

This utility model relates to the field of louvers, specifically a sliding curtain wall ventilation louver device. It includes a window frame, ventilation opening, rotating shaft, flip-up baffle, driven gear, sliding groove, rack, filter frame, filter screen, and placement slot. Using this utility model, air can be purified while keeping the ventilation opening open, significantly reducing the rate of indoor dust accumulation and decreasing daily cleaning workload.

The utility model discloses a civil air defense ventilation filtering device easy to maintain in the field of civil air defense equipment, which comprises a box body, the box body comprises a main box body and a side end cover, the main box body and the side end cover are inserted and fixed through bolts, an air inlet and an air outlet are respectively arranged at the front end and the rear end of the main box body, a sliding chute is arranged at the top and the bottom in the main box body, and a filtering plate is inserted in the sliding chute. The filter plate comprises a front frame, a rear frame and a filter element layer clamped between the front frame and the rear frame, positioning holes are formed in the edge of the filter element layer, and positioning columns and positioning grooves are formed in the positions, corresponding to the positioning holes, of the front frame and the rear frame respectively. The civil air defense ventilation filtering device easy to maintain has the advantages of being low in maintenance cost, high in maintenance efficiency, good in sealing performance and the like.

The utility model provides a kind of enhanced heat dissipation device, including lathe main body, the one side of lathe main body is fixedly installed with heat dissipation frame, the heat dissipation frame opening place slidingly cooperated with two maintenance doors of oppositely arranged, the two sides of heat dissipation frame are all set with the heat dissipation groove being connected with its inner cavity, the adjusting assembly that is cooperated with maintenance door is all set in two sides heat dissipation groove, the heat dissipation frame is detachably installed with multiple radiator groups, the one side of each radiator group is fixedly installed with heat dissipation fan. Through the linkage structure of maintenance door and adjusting assembly, the flexible switching of grating plate in ventilation state and cleaning state is realized, keep ventilation gap when closing to guarantee heat dissipation, when opening, rotate to vertical plane to form flat clean surface, solve the problem that traditional fixed grating inside soot is difficult to clean, reduce the ventilation volume drop caused by soot, maintain long-term stable heat dissipation efficiency.

The utility model discloses a ventilating duct with adjustable length, which relates to the technical field of ventilating ducts and comprises a ventilating duct main body, adjusting ducts are symmetrically arranged at two ends of the ventilating duct main body, a mounting bracket is fixedly mounted at the upper end of the ventilating duct main body, and adjusting mechanisms are symmetrically arranged on the outer side of the ventilating duct main body. The same linkage mechanism is arranged on the two front-back corresponding adjusting mechanisms on the outer side of the ventilation pipeline body, and a connecting frame is welded to the ends, away from the ventilation pipeline body, of the adjusting pipelines. By the adoption of the structure, the adjusting pipeline on the ventilation pipeline body can be adjusted and used from the outside through cooperation of the adjusting mechanism and the linkage mechanism, on the basis that adjustment is achieved, smoothness between the ventilation pipeline body and the adjusting pipeline is kept, wind power obstruction is reduced, and the service life of the ventilation pipeline is prolonged. And follow-up maintenance and use of the ventilation pipeline body or the interior of the adjusting pipeline are facilitated.

The application discloses a semi-buried deep well pump house limited space self-control ventilation method, and has the characteristics that the method comprises the following steps: a door lock opening and closing sensing device detects the opening and closing state of a first door lock, sends an electric control signal to an electrical system main control box, controls the starting of a ventilation equipment, and waits for a gas detection device to detect the air condition of the lower limited space; after maintaining the ventilation state for 20 minutes, the ventilation equipment stops running, if the toxic and harmful gas in the limited space exceeds a fixed dangerous value, an alarm buzzer sounds an alarm sound and a warning light flashes, and the safety door cannot be opened, if no toxic and harmful gas is detected in the limited space, the safety door is automatically unlocked to allow workers to enter the limited space to work. The application has the beneficial effect of avoiding the danger that may be caused by manually carrying an air detection instrument into the limited space, and greatly improves the safety guarantee when workers enter the work site.