19results about How to "Quiet environment" patented technology

The invention provides an oxygen generation air conditioner, a control method of the oxygen generation air conditioner and an oxygen generation air conditioner system. The oxygen generation air conditioner comprises an air conditioner outdoor unit which at least comprises an air compressor and is located outdoors; the air conditioner indoor unit at least comprises a molecular sieve and a filter screen, the air conditioner indoor unit is located indoors, the air compressor is connected with the molecular sieve through a pipeline, and the filter screen is located between the air compressor and the molecular sieve. According to the scheme, the problems that in the prior art, when an air compressor in an oxygen generation module works, large noise can be generated, and due to the fact that a molecular sieve and a filter screen in the oxygen generation module are designed outdoors, operation is inconvenient during replacement are solved.

The utility model provides a plate-type furniture connecting structure capable of being quickly disassembled and assembled, which relates to the technical field of furniture and comprises a first connecting plate, a second connecting plate arranged on one side of the first connecting plate, a polygonal connecting rod arranged on one side of the second connecting plate, a polygonal rod groove arranged on one side of the first connecting plate, and a curved slot arranged on the back of the first connecting plate. The multi-corner-angle connecting rods are arranged on one side of the first connecting plate and one side of the second connecting plate, a plurality of contact points and supporting faces can be provided through the multi-corner-angle design, connection is firmer, it is guaranteed that furniture is not prone to loosening in the using process, meanwhile, the multi-corner-angle connecting rods are beneficial to finding a proper position rapidly and accurately in the connecting process, dismounting and mounting operation is convenient, and the furniture connecting structure is simple in structure and convenient to use. Compared with a simple cylindrical connecting rod, the multi-corner-angle connecting rod can better resist external force, and the overall structural strength of furniture is enhanced.

The utility model discloses an efficient ventilating duct group, which comprises a fixing mechanism, a duct mechanism grouped through the fixing mechanism, and an adjusting mechanism arranged at one end of the duct mechanism, the duct mechanism comprises a duct main body, and the bottom of the duct main body is fixedly connected with an arc-shaped bent pipe; the bottom of each arc-shaped bent pipe is fixedly connected with a flow dividing pipe, and the adjusting mechanism comprises an adjusting pipe. According to the efficient ventilation pipeline set, a traditional turning connection mode is improved, the arc-shaped bent pipes are used for replacing and reducing air flowing resistance, airflow can be more smoothly transited, energy loss is reduced, and therefore the ventilation efficiency is improved; by means of the sound insulation cavity and the sound insulation cotton, sound insulation and noise reduction treatment can be carried out on noise generated when airflow in the air duct is adjusted, negative effects on health and working efficiency of people caused by the noise generated when the airflow in the pipeline is reduced and compressed are reduced, and a quieter using environment is provided.

This utility model relates to the field of toilet technology, and more particularly to a vacuum toilet deodorization and noise reduction device. It includes a negative pressure toilet, with a waste storage tank located at the rear of the toilet. A vacuum pump is installed on the top of the waste storage tank, and the vacuum pump is connected to the negative pressure toilet via a waste delivery pipe. An air outlet pipe is installed on the air outlet on one side of the top of the waste storage tank. This utility model utilizes a negative pressure vacuum self-priming pump, which guides the generated airflow to a bottom channel. This changes the traditional method of vacuum pumps where airflow is directly discharged at high speed from the side or top of the pump body. This optimized design avoids high-frequency noise generated by high-speed impact on the pump body and surrounding components during airflow discharge. Previously, directly discharged airflow would impact surrounding structures with significant force, creating harsh noise. However, guided by the bottom channel, the airflow enters the waste storage tank more smoothly, reducing noise sources caused by airflow impact, thereby effectively reducing the overall noise level of the device during operation.

The utility model provides a filtering silencer for an oxygen generator, which relates to the technical field of oxygen generator filtering silencers, and comprises a filtering barrel, a first-stage filtering net is arranged in the filtering barrel, a second-stage filtering net is arranged in the filtering barrel, the second-stage filtering net is arranged on the side of the first-stage filtering net, and the second-stage filtering net is arranged on the side of the second-stage filtering net. And a third-stage filter screen is arranged in the filter barrel and is arranged on the side of the second-stage filter screen. According to the air purifier, the third-stage filter screen, the second-stage filter screen and the first-stage filter screen are arranged in the filter barrel, so that air can be filtered layer by layer, particulate matters and pollutants in the air can be effectively removed, and purer oxygen can be provided; the outer sides of the third-stage filter screen, the second-stage filter screen and the first-stage filter screen are each provided with a sound insulation cover, the sound insulation covers are beneficial to weakening airflow noise layer by layer, the sound insulation covers are matched with a sound absorption box, noise absorption is facilitated, and therefore the noise volume is reduced.

The utility model provides a remote drainage container monitoring device which comprises a container which is located in a ward and used for containing patient drainage liquid, and further comprises a fixing base which is installed at the bottom of a sickbed and used for containing the container, a camera which is installed on the fixing base and used for monitoring the state of the container, and a server which is arranged at a nurse station and used for receiving and analyzing camera information. The monitor is used for outputting an analysis result of the server, the operation table is used for operating display content of the monitor, and the alarm device is used for giving an alarm according to a preset value of the server. According to the utility model, real-time monitoring can be realized in a nurse station, the workload of nurses is greatly reduced, a quiet environment can be provided for a ward, and meanwhile, medical personnel can intensively know the state of drainage liquid of each patient and timely process the state of the drainage liquid in the patient.

The utility model relates to the technical field of water saving of faucets, and discloses a water-saving faucet shell which comprises an outer shell, a protection assembly is fixedly connected to the outer side of the outer shell, a water stop assembly is arranged in the outer shell, and a flow guide assembly is fixedly connected to one end of the outer shell. According to the water-saving faucet shell, through the arrangement of the water stop assembly and the flow guide assembly, when the water-saving faucet shell is used, water flow impacts a connecting plate, so that an extrusion spring is in a compressed state, a water stop plug moves, the water flow enters a mounting box, and a flow guide plate in the mounting box combs and guides the water flow, so that water outlet is more uniform and gentle; when the faucet is closed, the spring is extruded to drive the connecting plate and the water stop plug to reset, and the water stop plug is tightly attached to a water flowing pipeline, so that the water flow is completely blocked, it is ensured that the faucet does not drip water or leak water, and water resource waste caused by water leakage and water dripping is reduced.

The utility model discloses a transmission assembly, a power transmission device and a vehicle, the transmission assembly comprises a power shaft, a driven gear, a transmission part and a buffer part, a driving gear is arranged on the power shaft, the driving gear is suitable for being meshed with a power output device, a matching section is formed on the power shaft, and the driven gear is arranged on the matching section in a sleeving mode; the driven gear can rotate relative to the matching section, a first circumferential matching part is arranged on the driven gear, the transmission part is arranged on the matching section and rotates synchronously with the power shaft, a second circumferential matching part is arranged on the transmission part, and the second circumferential matching part and the first circumferential matching part are arranged correspondingly. When the driven gear moves in the circumferential direction relative to the matching section, the first circumferential matching part and the second circumferential matching part get close to each other or get away from each other, the buffering piece is connected between the first circumferential matching part and the second circumferential matching part, and the buffering capacity of the transmission assembly can be improved.

The invention discloses a self-adhesive deadening felt which comprises a base material, a first deadening layer, a flame-retardant fiber layer, a microporous structure layer, a second deadening layer, an adhesive layer and a protective film layer which are stacked, the bottom of the deadening layer is connected with the top of the base material, and the top of the deadening layer is connected with the bottom of the flame-retardant fiber layer; the top of the second sound insulation layer is connected with the bottom of the density layer, the top of the flame-retardant fiber layer is in contact with the bottom of the microporous structure layer, the top of the second sound insulation layer is connected with the bottom of the adhesive layer, and the top of the adhesive layer is connected with the bottom of the protective film layer. And remarkable sound insulation, sound absorption and fire prevention effects are achieved. Firstly, the density layer can block sound waves of different frequency bands and remarkably reduce noise penetration, and the sound absorption layer adopts a porous structure, so that sound is effectively absorbed and attenuated, echoes and noise reflection in a space are reduced, and a quiet environment is created.

The invention provides a side leading-in type air duct system for a railway vehicle. The side leading-in type air duct system comprises an air duct body, an air inlet channel and air exhaust channels, wherein the air inlet channel is arranged at the top end of the air duct body and allows fresh air to enter, and the air exhaust channels are arranged on the two sides of the air duct body and used for guiding the fresh air into a passenger room.

The utility model provides a noise reduction type oxygen generator, relates to oxygen generator technical field, including the casing, the inside of casing is provided with the soundproof frame, the inner wall of soundproof frame is distributed a plurality of sound-absorbing box, the inside of sound-absorbing box is provided with the soundproof cover, the inside bottom of soundproof cover is provided with the buffer damper, and the inside bottom of soundproof cover is provided with the buffer damper. An oxygen generator is arranged at one end of the buffer damper, a box door is arranged on the side face of the shell, a sound insulation plate is arranged on the side face of the box door, and the sound insulation plate is arranged on the side of the oxygen generator. According to the utility model, a plurality of buffering dampers are arranged at the bottom of the oxygen generator, so that a buffering effect is effectively provided for the oxygen generator, vibration and noise generated by the oxygen generator during working are favorably absorbed and reduced, the sound absorption box is favorable for absorbing the noise, and the sound insulation cover and the sound insulation frame are favorable for insulating the noise; the level of noise generated during operation of the oxygen generator is effectively reduced, interference of the noise to a user is reduced, and a quiet use environment is provided.

This invention relates to the field of centrifugal fans, specifically disclosing a portable energy-saving electric fan and its usage method. The fan includes a housing with a grille and a fan installed inside the housing. The fan's outlet is aligned with the grille. The top of the housing has an opening through which the fan can extend. The fan's outer casing is divided into a fixed part and at least one movable part. The movable part is movable relative to the fixed part. When the movable and fixed parts are separated, maintenance tools can be inserted into the casing to inspect the inner wall and impeller. This invention allows the fan to be lifted from the housing for easy maintenance. Furthermore, the fan's outer casing can be divided into a fixed part and at least one movable part, and the fixed and movable parts can be fixed to the fixed part without connecting parts, only by a retaining element inside the housing, facilitating maintenance and return to its original position after maintenance.

The utility model discloses a kind of mute door groups in the technical field of acoustics engineering, including door frame, the door frame inside is connected with door panel by hinged installation, first lock tongue accommodating slot is opened in the right edge of the door panel inside, the position of the door frame corresponding to door panel first lock tongue accommodating slot is equipped with second lock tongue accommodating slot in its and the inside surface of door panel bonding;The door panel inside is equipped with a transmission groove with specific bending line, by setting transmission groove, transmission ball and other structures between door frame and door panel and reasonable layout, reach accurate stable locking purpose.Compared with traditional mechanical lock, avoid rebound sound, do not destroy quiet atmosphere, compared with magnetic attraction lock, not affected by environmental humidity and frequent opening and closing, not demagnetization, guarantee door lock suction force and security performance.When door panel is closed, trigger slider drives lock tongue to insert into slot through transmission ball, reset spring helps reset, make locking reliable, convenient operation, improve door group safety, durability and practicality.

The invention relates to the technical field of fans, in particular to a top-in and bottom-out bladeless fan mechanism. Three air guide arms are annularly and equidistantly connected to the inner side in a penetrating manner, and one ends of the inner sides of the three air guide arms are connected with a fan cabin in a penetrating manner; the inner wall of the air guide arm is provided with a ventilation channel penetrating through the fan cabin and the annular flow channel. The external centrifugal fan can extract air and exhaust the air into the annular flow channel, through the design of the flow guide air channel and the multiple flow deflectors, wind power is effectively buffered, the flow deflectors are guided to be attached to sound absorption materials at inlets, wind noise generated by air flowing is remarkably reduced, and on the premise that the ventilation effect (the wind speed reaches 1.37 m / s, and the wind area exceeds 0.8 m) is guaranteed, the ventilation efficiency is greatly improved. A relatively quiet use environment is created for a user, and the comfort is improved.

The utility model relates to mechanical key switch technical field, concretely is a kind of mute mechanical key switch of silica gel reset hand feeling, it includes glue shell, lower cover and the switch assembly and reset silica gel being set between glue shell and lower cover, switch assembly includes shaft core, conducting block and connecting piece, connecting piece is connected with keyboard circuit;The lower end of shaft core is inserted with conducting block one end and is arranged, when shaft core is pressed down under force, the other end of conducting block is contacted with connecting piece and makes connecting piece and keyboard circuit conducting;Reset silica gel is set for conducting block, set between shaft core and lower cover, shaft core reset, when shaft core reset, connecting piece and key electric melting connection disconnect;Therefore, the present application solves the short board that present technical either in the mute effect is insufficient, or in response speed and maintainability.

This utility model relates to the field of curtain machine technology and discloses a positioning mechanism for a curtain machine. The positioning mechanism is mounted on a movable body on a curtain track. The positioning mechanism includes a suspension part and two sets of longitudinal pressure rollers. The suspension part is a roller rotatably mounted on the movable body and is suspended from the curtain track. The longitudinal pressure rollers are mounted on the movable body and configured to abut against the curtain track upwards under elastic force. The two sets of longitudinal pressure rollers are positioned at a height difference from the suspension part, and the two sets of longitudinal pressure rollers are located in front of and behind the suspension part along the length of the guide rail body, so that the suspension part and the two sets of longitudinal pressure rollers are triangularly distributed. The two sets of longitudinal pressure rollers and the suspension part clamp the curtain track longitudinally, thereby limiting the up-and-down swaying of the movable body, greatly enhancing the stability of the movable body on the curtain track, enabling the movable body to operate smoothly and steadily, and ensuring the reliability of the curtain opening and closing operation.

The utility model discloses a tail upper turnover door, rear cover structure and vehicle thereof, it includes a tail upper turnover door, rear cover structure, including rear frame, and the rear frame tail is equipped with the door body mechanism, and the one side of rear frame is fixedly connected with the fender block, the door body mechanism includes the turnover door and the truck box tail door, the turnover door is connected in the rear frame top rear portion through the hinge, the truck box tail door is connected in the rear frame tail lower portion through the hinge, the turnover door and truck box tail door form the up and down double -open door structure, and both can be opened alone or simultaneously open, when the turnover door and truck box tail door close simultaneously, and the locking mechanism is locked each other between both. The utility model discloses have reduced the whole vehicle height to promote the controllability and the passability, realize the flexible intercommunication and the partition of tent and rear cover space simultaneously, and the advantage of optimizing space utilization.

The utility model relates to centrifugal fan wheel technical field discloses a high stability's centrifugal fan wheel mounting structure, including fan shell, the inside fixedly connected with motor of fan shell, the output fixedly connected with fan wheel frame of motor, the outside of fan wheel frame is provided with fan blade, the front side of fan wheel frame is provided with dust collection mounting plate, the outside fixedly connected with ring net surface of dust collection mounting plate, the front side equidistance of dust collection mounting plate is penetrated and is connected with a plurality of fixed bolt no.