1315results about "Noise suppression" patented technology

The invention discloses an air conditioning system and a control method thereof. The air conditioning system comprises an air conditioning outdoor unit; the air conditioning outdoor unit comprises a compressor, an outdoor heat exchanger and an outdoor fan; the outdoor fan is at least provided with a first working mode and a second working mode; and when the outdoor fan runs in the first working mode, a wind gear is higher than that when the outdoor fan runs in the second working mode. The control method comprises the following steps that S1, the air conditioning system is controlled to enter arefrigeration mode; S2, according to the outdoor environment temperature and / or preset hours, the outdoor fan is controlled to enter the first working mode or the second working mode. According to the control method of the air conditioning system, the air conditioning system can control the outdoor fan to enter the first working mode or the second working mode according to the outdoor environmenttemperature and / or the preset hours, and when the outdoor fan runs in the second working mode, the wind gear of the outdoor fan is lowered, so that the use reliability the air conditioning system cannot be affected, and the requirement of a user on comfortableness can be met.

The invention provides an intelligent adjustment method for distributed air treatment equipment, and belongs to the technical field of air treatment equipment, and the method comprises the steps: inputting a personnel distribution image into an airflow field reconstruction model based on a graph neural network, outputting three-dimensional space flow field distribution data, calculating a personnel intensity index, and predicting an average thermal sensation index value; an air supply adjustment double-layer game model is established based on the data, the air supply angle and the air supply speed of an electric side supply nozzle and the air supply quantity of a lower air supply outlet are solved, an actuator is controlled to adjust air supply parameters, and the target air outlet temperature and the refrigerant flow of the heat exchanger are calculated through a thermodynamic entropy production minimization heat exchange optimization algorithm; and feedback correction is performed according to the actually predicted average thermal sensation index deviation to form closed-loop control, so that the technical problem that the distributed air treatment equipment is difficult to adjust the air supply parameters in real time according to the personnel distribution dynamic change so as to ensure the thermal comfort and the energy efficiency at the same time is solved.

The invention provides a flow guide ring structure, a fan assembly, an air conditioner and a noise reduction control method thereof.The flow guide ring structure comprises a flow guide ring, a noise reduction unit is arranged on the periphery of the flow guide ring, the noise reduction unit comprises a first sound absorption assembly, and the first sound absorption assembly comprises a first shell cover, a first partition plate and a first movable plate; the first shell cover covers the peripheral face of the flow guide ring to form a first cavity, the first cavity is divided by the first partition plate into a first sound absorption cavity and a second sound absorption cavity, the first sound absorption cavity and the second sound absorption cavity are different in size, and a plurality of first communicating holes are formed in a first perforated plate section of the first partition plate in a penetrating mode. The first movable plate is movably arranged on the first perforated plate section so as to adjust the number of the shielded first communicating holes. According to the flow guide ring structure, self-adaptive adjustment and noise reduction can be carried out according to the change of the operating parameters, so that noise of different frequencies generated under different operating parameters is effectively reduced, the frequency range of effective noise reduction is widened, the noise reduction effect is improved, and the mute experience comfort of a user is improved.

The invention provides an attenuator for ducted air flow systems such as heating, ventilation and air conditioning systems arranged to direct the airflow into the attenuator by reducing the airflow path geometry into a central channel surrounded by absorbing material to damp resonant modes to reduce noise more uniformly across the desired frequency spectrum than resistive attenuators.

A fan assembly has a substantially centrifugal outlet, an axial intake, an airflow channel extending substantially perpendicular to the axial intake, and a guide element for redirecting airflow adjacent the axial intake. The axial intake is spaced apart from a back wall of the airflow channel by a first distance, and the guide element is positioned between the axial intake and the back wall of the airflow channel, or the guide element comprises a back surface of the fan assembly. The airflow from the airflow channel then passes through the guide element to enter the axial intake.

The utility model relates to the technical field of air conditioning, and discloses a volute assembly for an air conditioner and the air conditioner. The air conditioner comprises a cross-flow fan and a heat exchanger, the volute assembly for the air conditioner comprises a volute, an air outlet channel is defined, an inlet of the air channel is suitable for communicating with the cross-flow fan, and an outlet of the fan is suitable for communicating with the heat exchanger; the volute tongue is arranged in the air duct; wherein the volute tongue is detachably connected with the volute. The volute tongue is detachably connected with the volute, so that the volute tongue can be independently detached, installed and replaced, the volute and the volute tongue can be independently produced and machined, the situation that the whole volute cannot be used due to machining errors of the volute tongue can be avoided, the machining complexity and difficulty are reduced, and the machining cost of the volute and the volute tongue is also reduced.

The utility model relates to the field of air conditioner air outlet devices, in particular to a central air conditioner air outlet noise reduction device which comprises an air receiving barrel, a bucket-shaped air expanding cover, an air outlet cover, a noise reduction frame, an air direction guiding frame and a protection frame. A hopper-shaped air expanding cover is arranged at the lower end of the air receiving barrel, an air outlet cover is arranged at the lower end of the hopper-shaped air expanding cover, an embedded groove is formed in the end, away from the hopper-shaped air expanding cover, of the air outlet cover, and a noise reduction frame, an air direction guiding frame and a protection frame are sequentially arranged in the embedded groove. According to the air conditioner air outlet device, noise generated by airflow resonance is effectively reduced through the air expansion flow guide design of the hopper-shaped air expansion cover and the sound absorption cotton plate filling of the sound attenuation and noise reduction frame, airflow can be evenly and softly blown to a room through the design of the air direction guide frame, and the problems that airflow in a traditional air conditioner air outlet device is too strong and uneven in distribution are solved.

The invention relates to the technical field of air purification equipment, in particular to an unpowered public place air directional flow purification structure. The problems that in the prior art, the natural ventilation principle and the multi-stage purification function cannot be fused on the structural design level, and consequently inherent defects exist in the aspects of energy consumption, noise, maintenance cost, airflow organization stability and the like are solved. The unpowered public place air directional flow purification structure is arranged on a wall unit and comprises a micropore physical pre-filtering structure, a multi-layer labyrinth type physical filtering structure and an adsorption / deposition structure which are integrally arranged in a closed mounting cavity in the wall unit. In the operation process of the structure, no fan or motor or external power supply is needed in the whole process, air circulation is driven by completely depending on the thermal characteristics of the wall and weak thermal buoyancy formed by an indoor environment heat source, no mechanical moving part exists in the operation process, the noise level is low, and the noiseless requirement of a hospital ward area at night is met.

The invention discloses a fan noise control method, device and system and an air conditioner, and belongs to the field of fan noise control. The draught fan noise control method comprises the steps that when it is determined that the noise of a draught fan is unqualified, the noise peak frequency of the noise is obtained; determining the noise type of the noise based on the noise peak frequency; and the fan blade angle is adjusted based on the noise type. According to the scheme, when the fan noise is unqualified, different types of noise can be determined based on the noise peak frequency, and then the fan blade angle is adjusted by adopting different adjusting modes according to the different types of noise, so that when the noise is unqualified, the fan blade angle can be adjusted in a targeted manner based on the different types of noise, adjustment can be performed in time, and the fan blade angle adjusting efficiency is improved. And a sound wave generator is not needed, the cost is low, the method can be suitable for various use scenes, and the use experience of a user is not affected.

The invention relates to air conditioning equipment and a control method of the air conditioning equipment, and relates to the field of air conditioners. The controller is configured to obtain throttling device configuration information of the air conditioning equipment under the conditions that refrigerant leakage happens to the air conditioning equipment and an initial risk frequency exists in a preset frequency range, the initial risk frequency is a compressor operation frequency which causes the abnormal state of the air conditioning equipment, and the compressor operation frequency is a compressor operation frequency which causes the abnormal state of the air conditioning equipment. The throttling device configuration information is used for representing whether the air conditioning equipment is provided with a throttling device or not; a refrigerant leakage detection strategy matched with the throttling device configuration information is determined; based on the refrigerant leakage detection strategy, the refrigerant leakage degree of the air conditioner equipment is detected; under the condition that the refrigerant leakage degree meets the refrigerant leakage condition, the initial risk frequency is adjusted to obtain a target risk frequency; and the operation duration of the compressor under the target risk frequency is controlled to be lower than a preset duration threshold value. According to the technical scheme, stable operation of the air conditioning equipment can be guaranteed.

An embedded filtering ventilator for a curtain wall relates to the technical field of indoor ventilation and comprises an adapting part, a filtering part arranged in the adapting part and a protection part arranged on the outer side of the adapting part. The equipment can adapt to preset spaces with different sizes of the curtain wall, and the utilization rate of the equipment is improved while the overall and smooth visual effect of the curtain wall is prevented from being damaged by the externally-hung ventilator; the equipment is installed indoors, installation is simple, indoor replacement and maintenance can be achieved, manpower is effectively saved, and the safety of workers is guaranteed; the equipment can effectively absorb noise, and the happiness in use is improved.

The utility model discloses an air conditioner which comprises an indoor unit, the indoor unit comprises a machine shell, an indoor heat exchanger and a heat exchange fan, the heat exchange fan is arranged in a containing cavity and comprises a heat exchange fan, a first driving motor and a first buffering piece, and the first driving motor comprises a first stator and a first rotor. The first rotor is rotatably arranged on the outer side of the first stator, the heat exchange fan is located on one side, in the axial direction of the first rotor, of the first rotor, the first rotor is used for driving the heat exchange fan to rotate, and the first buffer part is connected to the heat exchange fan and the first rotor; the first buffering piece is located between the heat exchange fan and the first rotor in the axial direction of the first rotor. By the adoption of the scheme, the first buffering piece is arranged, the first buffering piece can transmit the rotating power of the first rotor to the heat exchange fan, meanwhile, the damping effect can be achieved between the first rotor and the heat exchange fan, and therefore noise generated when the heat exchange fan works can be reduced.

The utility model provides a fan volute, an air supply structure and an air conditioner, and belongs to the technical field of air conditioners. The fan volute comprises a main body, the main body is of a cylindrical structure, and a first passing opening and a second passing opening are formed in the main body. Along the axis direction of the main body, the inner surface and the outer surface of the main body are respectively provided with an adhesive layer made of a flexible material. According to the fan volute, the wind resistance during operation of the fan can be reduced through the adhesion layer, noise is reduced, and the use experience of a user can be improved.

The embodiment of the application provides an air conditioning system and a control method thereof, and relates to the technical field of air conditioning systems. The air conditioning system comprises a compressor, a fan and a controller; a first noise sensor for detecting an ambient noise value of an environment in which the air conditioning system is located; a second noise sensor for detecting an air conditioning noise value emitted by the air conditioning system in operation; the controller is configured to: acquire a location where the air conditioning system is located and a current time, and determine an environmental requirement value corresponding to the air conditioning system according to the location where the air conditioning system is located and the current time; acquire the ambient noise value and the air conditioning noise value; when the air conditioning noise value is higher than the ambient noise value or the environmental requirement value, control the operating frequency of the compressor to be reduced by a preset frequency, and / or control the rotating speed of the fan to be reduced by a preset rotating speed. The air conditioning system provided by the embodiment of the application can reduce the influence of the air conditioning noise value emitted by the air conditioning system in operation on a user, and further improve the use experience of the user.

The application provides a cross-flow fan, an air conditioner and a control method thereof. The cross-flow fan comprises a driving component, a cross-flow fan blade and a magnetic suspension bearing. One end of the cross-flow fan blade is connected with the driving component, the other end of the cross-flow fan blade has a rotating shaft, the rotating shaft has magnetism, the magnetic suspension bearing is sleeved outside the rotating shaft, the magnetic suspension bearing comprises a stator core and a plurality of coil groups, the stator core has a plurality of pole column units, each pole column unit is distributed at intervals along the circumference of the stator core, and each coil group is wound around each pole column unit. According to the application, the magnetic suspension bearing suspends the cross-flow fan blade away from the one end of the driving component in the air through controllable magnetic field force, realizes high-speed operation of the rotating structure and the stationary structure without contact, eliminates the friction between the cross-flow fan blade and the surrounding components during operation, greatly reduces the noise generated during the operation of the cross-flow fan, and improves the mute performance of the air conditioner indoor unit and the service life of the cross-flow fan blade and other components.

The utility model relates to an air conditioner indoor unit which comprises a shell part, a draught fan assembly, a heat exchanger and an air guide assembly, the draught fan assembly and the heat exchanger are installed in the shell part, the draught fan assembly comprises a volute, an impeller and a driving motor, and the air guide assembly is arranged in an air outlet or between the air outlet and the heat exchanger. The air guide assembly comprises at least one air guide part, and the air guide part extends in the conveying direction of airflow; according to the air guide part, the air guide channel is formed in the air outlet in the transverse direction, when airflow is output from the air outlet, the transverse air component can be reduced to a certain degree through the air guide channel, then generation of vortexes is reduced, the fin sound is remarkably reduced or eliminated, and the user experience is improved.

This utility model relates to the field of noise reduction technology for heat pump units, and discloses a noise reduction room for an air-cooled heat pump unit. The room includes a main body, an opening, an air inlet duct, an air outlet duct, a unit platform, an air inlet silencer, an air outlet silencer, a fan, and a mounting cover. The main body of the room is recessed into the ground, with its top horizontal to the ground. The unit platform is horizontally positioned on the ground of the main body. An opening is located at the top of the main body, covered by a mounting cover. An air inlet duct is vertically positioned at one end of the main body, and an air outlet duct is vertically positioned at the other end. The heat pump unit is fixedly mounted on the unit platform. An air inlet silencer is installed in the air inlet duct, and an air outlet silencer is installed in the air outlet duct. The fan is also fixed in the air outlet duct, located below the air outlet silencer. The inner walls and top of the main body are covered with a layer of noise reduction panels. This utility model uses a recessed ground-mounted layout, resulting in good sound insulation and noise reduction effects with minimal impact on the landscape.

sound insulation insert (10), which is designed in particular for the interior noise reduction of a residential ventilation system that can be installed in a wall opening and has at least one axial fan having a central motor hub, wherein the sound-insulating insert (10) is made essentially of an acoustically absorbing material at least on its surfaces in contact with the airflow, and wherein the sound-insulating insert (10) has an annular outer element (12) for insertion into a wall penetration duct, wherein the sound-insulating insert (10) has an inner element (14) in an area which, in the mounted position, adjoins the motor hub of the at least one axial fan in the residential ventilation system, which is connected to the outer element (12) via at least one web (16a-c), so that an annular gap-shaped passage for the airflow is formed between the outer and inner elements, which passes through the at least one The bridge (16a-c) is divided into sections (18a-c), characterized by the fact that the outer element (12), which includes at least one web (16a-c) and the inner element (14) are made of an acoustically absorbing rigid or soft foam material, in particular a melamine resin foam.

The noise reduction device for the air source heat pump unit comprises an air outlet pipe and a connecting cover, the connecting cover is arranged in the air outlet pipe, four sets of L-shaped buckles are arranged on the inner wall of the air outlet pipe at equal intervals, four sets of limiting buckles are installed on the outer wall of the connecting cover at equal intervals, and the limiting buckles are in sliding connection with the L-shaped buckles. Locking pins are symmetrically installed on the outer wall of the air outlet pipe and penetrate through the air outlet pipe, inserting holes are formed in the positions, on one sides of the locking pins, of the side wall of the connecting cover, the locking pins can be inserted into the inserting holes, multiple sets of A external threads are arranged on the side, away from the air outlet pipe, of the connecting cover at equal intervals, and silencing cylinders are arranged on the surfaces of the A external threads. And B internal threads are arranged on the inner walls of the silencing cylinders. According to the utility model, convenient multi-position noise elimination and noise reduction are realized, the device can be conveniently and quickly disassembled and assembled, and the disassembly and assembly convenience and the noise reduction effect of the device are improved.

The application discloses a pet care air purifier parameter intelligent control method and system, aiming at solving the problem that the existing purifier is difficult to identify the long-time stillness of pets in the monitoring blind area, resulting in the accumulation of local pollution. The method continuously receives the data stream of the visual sensor and the passive infrared sensor, and when no clear pet signal is detected within the preset time, the blind area intention inference instruction is activated, the multi-dimensional environmental abnormal signal of odor, local temperature and particulate matter is collected, and after time consistency, space correlation and comprehensive threshold correlation analysis, the adaptive purification strategy of fan speed fine tuning, filter optimization and directional airflow guidance is executed after the pet in the blind area is confirmed to be still. According to the recovery of pet activity or the weakening of environmental abnormalities, the method can be switched to the normal mode or the low-power mode. The application can accurately identify the still state of the pet in the blind area, remove the pollutants in a targeted manner, balance the purification efficiency, energy saving and low noise, and improve the fine management level of indoor air quality.

The application relates to the technical field of air conditioners, and discloses a sound elimination structure and an air conditioner. The sound elimination structure provided by the application comprises a pipe body, at least one mounting hole is formed in the pipe body; a sound elimination mechanism, the sound elimination mechanism comprises at least one sound elimination component, the at least one sound elimination component is arranged in the at least one mounting hole, the at least one sound elimination component extends into the pipe body, and the at least one sound elimination component is fixedly connected with the pipe body. The sound elimination structure is characterized in that the mounting hole is formed in the pipe body for conveying refrigerant, the sound elimination component can be arranged in the pipe body through the mounting hole, and the refrigerant in the pipe body is subjected to noise reduction; the sound elimination mechanism is arranged on the pipe body for conveying refrigerant, no additional pipe space is occupied, and the problem that the sound elimination effect of a pipeline system is poor due to the difficulty in mounting a sound eliminator on the pipeline system is solved.

The present disclosure relates to an air conditioner indoor unit and an air conditioning unit, wherein the air conditioner indoor unit comprises: a shell comprising a top wall, a bottom wall and a front wall, the front wall being connected between the top wall and the bottom wall and located at a first end along a first direction; a first air outlet being provided on an area of the bottom wall close to the front wall along the first direction, and a second air outlet being provided on the front wall; and a first guide plate and a second guide plate, both of which are rotatably arranged and have rotation axes extending along a second direction perpendicular to the first direction; wherein in a first air outlet state of the air conditioner indoor unit, the first air outlet is open, the first guide plate and the second guide plate are arranged side by side along a third direction and jointly close the second air outlet, the third direction being perpendicular to the first direction and the second direction; a guide surface of the first guide plate relative to the top wall is outwardly inclined, and both ends of the first guide plate form smooth guide areas with the guide surface and the second guide plate.

The application discloses an air conditioner indoor unit and an air conditioner, wherein the air conditioner indoor unit comprises a shell, an indoor heat exchanger and a connecting piece, the shell comprises a front volute assembly and a rear volute assembly, the front volute assembly and the rear volute assembly are matched to form a heat exchange air duct, the front volute assembly comprises a water pan, the indoor heat exchanger is arranged in the heat exchange air duct and located above the water pan, the connecting piece comprises a first connecting end and a second connecting end, the first connecting end is fixedly connected with the water pan, and the second connecting end is fixedly connected with the rear volute assembly, wherein the connecting piece is used for applying a tension force to the water pan towards the indoor heat exchanger to resist the trend that the distance between the water pan and the indoor heat exchanger becomes larger. The technical scheme of the application can resist the trend that the distance between the water pan and the indoor heat exchanger becomes larger through the tension force generated by the connecting piece, and deformation of the water pan is prevented.

To provide a railway vehicle capable of reducing noise of an air-conditioning ventilator propagated through a duct and discharged into the vehicle without narrowing a flow passage cross-sectional area or providing a complicated structure.SOLUTION: In a railway vehicle including a vehicle body, an air-conditioning ventilation device provided in the vehicle body, a duct connecting the vehicle body and the air-conditioning ventilation device, and a noise reduction structure, the noise reduction structure is disposed outside a flow path of air flowing from the inside of the vehicle to the air-conditioning ventilation device in the duct, and is excited at a predetermined frequency corresponding to a sound generated by the air-conditioning ventilation device.SELECTED DRAWING: Figure 4

The application discloses a multi-cavity intelligent fragrance system based on emotion recognition and a control method thereof, and belongs to the technical field of smart home. The system comprises a base, a capsule bin, a fixed top cover, a flow guide structure, a plurality of fragrance oil consumable capsules, an emotion acquisition module and a control unit. The capsule bin is provided with a plurality of capsule accommodating cavities, and each cavity is provided with an independent heating element and a physical foolproof structure at the bottom. The top cover is internally provided with a flow guide structure, including a plurality of independent flow guide channels, each channel is in sealed communication with the top of the corresponding capsule cavity, and converges to the fragrance outlet at the center of the top cover. The bottom of the capsule is provided with a foolproof groove and a fragrance type identification part (color ring or NFC tag). The control unit matches the target fragrance type according to the user emotion obtained by the emotion acquisition module, starts the heating element of the corresponding capsule cavity, and the fragrance is released from the fragrance outlet through the flow guide channel. The application does not need rotating parts, has a simple and reliable structure, supports composite fragrance type release, and can be widely applied to home, office and other scenes.

A system including a body, an inlet and an outlet is disclosed. The body may have a hollow body interior portion. The body may include a bottom portion, a top portion and sidewalls connecting the bottom portion and the top portion. A first diameter of the bottom portion may be greater than a second diameter of the top portion. Further, the sidewalls may have a curved shape bended inwards towards the hollow body interior portion. The inlet may be configured to intake air into the hollow body interior portion, and the outlet may be configured to output air from the hollow body interior portion.

The invention relates to an air conditioner control method, device, equipment, medium and program and an air conditioner, and relates to the technical field of air conditioners. The method comprises the steps that the air column audio frequency of the air conditioner in the running process is determined; and according to the preset pipeline inherent frequency and the air column audio frequency, the operation parameters of the air conditioner are adjusted, and the operation parameters comprise one or more of the valve opening degree, the outdoor unit rotating speed and the compressor frequency. According to the embodiment, the operation parameters of the air conditioner are adjusted through the preset pipeline inherent frequency and the preset air column audio frequency, abnormal sound generated by sound cavity resonance of the refrigerant pipeline of the air conditioner can be reduced in real time, the method is suitable for air conditioners with different types of pipeline assembly states, and on the premise that the temperature control of the air conditioner on the indoor environment is not affected, the indoor environment can be effectively protected. And the operation noise of the air conditioner is dynamically reduced in real time.

The invention discloses an air supply device and method for a dust-free workshop, and relates to the field of air supply devices. The air supply device for the dust-free workshop comprises a shell with an air inlet end and an air outlet end, a fan fixed in the shell, an air blocking disc rotatably arranged in the shell, a driving mechanism used for driving the air blocking disc to rotate and a reset mechanism used for driving the air blocking disc to reset, and the air outlet end of the shell is sealed through a sealing plate. The sealing plate is connected with a plurality of groups of air pipes communicated with the interior of the shell, the number of each group of air pipes is gradually increased, and the inner diameters are gradually reduced; the fan is used for driving air to be discharged through the air outlet end; the air blocking disc is provided with a plurality of air holes, the air holes are in one-to-one correspondence with the air pipes, and when the air blocking disc rotates, the air holes are sequentially aligned with the air pipes. According to the air supply device and method for the dust-free workshop, the air holes in the air blocking disc are aligned with the air pipes connected with the sealing plate by driving the air blocking disc to rotate, so that rapid and stable output of different air volumes and air types is achieved, and the air supply device has the advantages of being simple and reliable in structure and low in noise.

The application provides an air conditioner indoor unit and an air conditioner. The air conditioner indoor unit comprises a main body, a front side wall of the main body is provided with a front air outlet, a front part of a lower side wall of the main body is provided with a lower air outlet, a water collecting tray is arranged in the main body and located at the rear side of the lower air outlet, a fan is arranged in the main body and located at the rear side of the water collecting tray, and a heat exchanger is arranged on the water collecting tray. The heat exchanger is a folded heat exchanger, the folded heat exchanger comprises M rows of heat exchange pipes and N heat exchange sections, the N heat exchange sections are sequentially connected to form N folds, the M rows of heat exchange pipes are arranged in the N heat exchange sections, 1≤M≤2, and N≥2. Compared with a straight-row heat exchanger, the effective size of the U-shaped pipe arranged in the folded heat exchanger in the up-down direction is larger, so that more U-shaped pipes can be arranged in the up-down direction. The scheme can improve the heat exchange efficiency of the heat exchanger and reduce the air outlet noise of the air conditioner indoor unit by reducing the number of rows of heat exchange pipes and increasing the number of U-shaped pipes arranged in the up-down direction.