4764results 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.

An air conditioner is provided. The air conditioner may include a case including an intake port and a discharge port, a fan that is disposed inside of the case and forms an air flow, an indoor heat exchanger that heat-exchanges air inside of the case with a refrigerant, and a guide module that is disposed downstream of the fan and guides the air flow flowing to the discharge port. The guide module may include a plurality of vanes arranged in a row in a discharge flow path formed between the discharge port and the fan. The plurality of vanes may include a pair of first vanes spaced apart from each other and a plurality of second vanes arranged between the pair of first vanes. The pair of first vanes may include at least one communication hole formed in a penetrating manner.

The invention discloses an air conditioner with an axial flow fan. The air conditioner aims to solve the problem that the air supply efficiency of the axial flow fan is reduced due to blade top air leakage. The air conditioner with the axial flow fan comprises a shell, a refrigerant heat exchanger and the axial flow fan, the refrigerant heat exchanger and the axial flow fan are located in a mounting cavity of the shell, and the axial flow fan is used for driving air to flow through the refrigerant heat exchanger. The axial flow fan comprises a motor and axial flow fan blades, the axial flow fan blades comprise a hub and a plurality of axial flow blades, the hub is used for being connected with an output shaft of the motor, and the multiple axial flow blades are distributed in the circumferential direction of the hub at intervals and connected with the hub. On the outer edge, away from the hub, of the axial flow blade, the radial distance between the end, close to the windward side, of the outer edge and the hub is larger than that between the end, close to the leeward side, of the outer edge and the hub, and the axial flow blade is used for reducing the blade top clearance at the outer edge. The axial flow fan of the air conditioner provided by the invention has relatively high air supply efficiency.

A window-type air conditioner that is installable in a window frame is provided. The window-type air conditioner includes an outdoor module including a compressor for compressing a refrigerant, an outdoor heat exchanger in which heat exchange between outdoor air and the refrigerant occurs, and an outdoor housing accommodating the compressor and the outdoor heat exchanger, an indoor module including an indoor housing spaced apart from the outdoor housing, and an indoor heat exchanger that is arranged in the indoor housing and in which heat exchange between indoor air and the refrigerant occurs, a refrigerant pipe providing a flow path through which the refrigerant moves between the indoor module and the outdoor module, and a connection support module connecting the indoor module and the outdoor module, and being configured so that opposite end portions thereof support the indoor housing and the outdoor housing, wherein at least one soundproof member surrounding the refrigerant pipe is arranged in the connection support module.

The invention relates to the technical field of clean air conditioning systems, in particular to an intelligent regulation and control method and system for a clean air conditioning system.The method comprises the steps that in response to the situation that real-time environment parameters are not located in a target parameter interval, the real-time environment parameters and an initial control sequence are input into a prediction model to obtain adjusted environment parameters after the initial control sequence is executed, the initial control sequence is a control parameter of each dimension in a preset time period; predicting the noise degree of the initial control sequence, and constructing a loss function; and iteratively updating the initial control sequence by using a gradient descent method, and stopping when the value of the loss function is smaller than a preset value to obtain a target control sequence so as to realize regulation and control of the clean air conditioning system. By means of the technical scheme, precise regulation and control of the clean air conditioning system can be achieved.

The invention relates to the technical field of active noise reduction of ventilation pipelines, in particular to an active noise reduction ventilation device and method powered by solar energy. The active noise reduction assembly comprises a noise acquisition assembly, a noise reduction controller and a noise reduction microphone; the passive noise reduction assembly comprises a fan and blades; the control mechanism comprises a rotating shaft, a solar assembly and a sound insulation layer, the passive noise reduction state and the active noise reduction state of the fan are automatically adjusted through the rotating shaft according to the air inlet amount of the ventilation pipeline, and the control mechanism adapts to various application scenes, does not need manual switching, is simple and convenient, automatically adjusts the air inlet amount of the filter screen and assists in scraping dust filtered by the surface layer of the sound insulation layer. The motion state of the rotating shaft is automatically adjusted according to the air inlet amount and the wind noise, meanwhile, solar assembly power generation and wind power generation of the fan are switched, and normal work of the active noise reduction assembly is guaranteed.

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 an up-down air outlet air conditioner and a control method thereof. The up-down air outlet air conditioner comprises a shell, a first air inlet, a first air outlet, a second air inlet and a second air outlet. The indoor heat exchanger is arranged in the shell and divides the space in the shell into an upper space and a lower space; the first air duct is arranged in the upper space and communicates with the second upper air opening; the second air duct is arranged in the lower space and communicates with the first lower air opening; the first cross-flow fan blade is arranged in the first air duct; the second cross-flow fan blade is arranged in the second air duct; the first upper air opening and the first air channel can communicate with the second air channel, and the second air channel and the second lower air opening can communicate with the first air channel. According to the up-and-down air outlet air conditioner and the control method thereof, the requirements that cold air is not directly blown during refrigeration and hot air falls to the ground quickly during heating can be met, and too large noise cannot be generated.

An air guide cover including an air outlet, an air guide channel configured to house a fan of an outdoor unit of an HVAC apparatus, and an air inlet communicated with the air outlet through the air guide channel. At least one of an inner wall of the air inlet, an inner wall of the air outlet and an inner wall of the air guide channel is provided with a flow-disturbance structure. The flow-disturbance structure includes at least one of a protrusion part and a cut-out part.

The invention discloses an air outlet assembly, an outdoor unit and an air conditioner, the air outlet assembly comprises a panel body and a flow guide ring, and the panel body is provided with an air outlet; the flow guide ring is arranged on the panel body, the flow guide ring comprises a main air ring and an air expansion part, the main air ring and the air outlet are coaxially arranged, the air expansion part is located on the air outlet side of the main air ring, one end of the air expansion part is connected with the main air ring, and the other end of the air expansion part extends in the direction away from the main air ring so that air outlet airflow can be diffused along the air expansion part. According to the technical scheme, the air outlet amount can be increased, and air outlet noise is reduced.

There is provided a ventilation-type silencer that uses a porous sound absorbing material and has high sound deadening performance in a low frequency band. A ventilation-type silencer includes an inlet-side vent pipe, an expansion section that communicates with the inlet-side vent pipe and has a cross-sectional area larger than a cross-sectional area of the inlet-side vent pipe, and an outlet-side vent pipe that communicates with the expansion section and has a cross-sectional area smaller than the cross-sectional area of the expansion section. The ventilation-type silencer includes a porous sound absorbing material that is disposed in at least a part of the expansion section, a back space that is a space in the expansion section formed on a side of the porous sound absorbing material opposite to a flow channel connecting the inlet-side vent pipe and the outlet-side vent pipe, and a partition member that partitions the back space. A region partitioned by the partition member forms an acoustic resonator, and the acoustic resonator is acoustically connected to the flow channel.

Module (M) for a stationary heat pump system comprising: at least one heat exchanger (W1, W2, W3). The at least one heat exchanger (W1, W2, W3) consists of interconnected plates arranged one above the other or side by side. A characteristic feature of the invention is that the module (M) has at least one connector (VWQ, VWV) for establishing a fluid-tight connection between the at least one heat exchanger (W1, W2, W3) and at least one heat source and / or at least one heat consumer. The module (M) also includes a compressor (KP) and an expansion valve (EV). A component (B) for a stationary heat pump system comprising at least one fourth heat exchanger (W4) and at least one module (M) according to the invention. The at least one fourth heat exchanger (W4) is a direct evaporator.

The utility model discloses an air duct assembly, an indoor unit and a heating and ventilation system, the indoor unit comprises a draught fan, the air duct assembly comprises a first shell and a second shell, and the first shell and the second shell are matched to define a diffusion cavity and a draught fan cavity which communicate with each other and an air suction opening communicating with the draught fan cavity; the second shell comprises a shell main body and a drainage plate, the shell main body is provided with a backflow channel, the backflow channel comprises a backflow inlet and a backflow outlet, the backflow inlet is communicated with the diffusion cavity, and the backflow outlet is communicated with the fan cavity; the drainage plate is connected to the shell body and located on one side of the air suction opening, and an uneven part is arranged at the end, away from the backflow outlet, of the drainage plate. The air conditioner indoor unit can reduce flow vortex noise and improve the operation tone quality when the indoor unit is used, so that the user experience is improved.

The present invention provides an air purifier which includes an outer case (10) having a filtering cavity (15) and a driving cavity (16) space apart from each other, a filter (20) received in the filtering cavity (15), a driving fan (30) received in the driving cavity (16). The outer case has at least one air inlet (17) and an air output arrangement (11). The air purifier further includes an air hub (40) provided between the filtering cavity (15) and the driving cavity (16). The air hub (40) includes a first air drawing frame (41) and a second air drawing frame (42). The first air drawing frame (41) extending within a central cavity (21) of the filter (20) and is coaxially formed with respect to the filter (20). An axial direction of the first air drawing frame (41) is aligned with a longitudinal axis of the driving fan (30). The second air drawing frame (42) peripherally, upwardly and radially extends from the first air drawing frame (41) toward an upper end of the filter (20). The first air drawing frame (41) and a second air drawing frame (42) increase total surface area for air flow and reduces air resistance and noise.

The utility model relates to an air duct structure and a cabinet machine in the technical field of air conditioners, the air duct structure comprises a main air duct, a fan, an air outlet frame and a grating, the grating is installed between the air outlet end of the main air duct and the air outlet frame, airflow in the main air duct contacts with the grating in the flowing process, the grating scatters eddy current, and the air outlet end of the main air duct is connected with the air outlet frame. Air flow blown out of the main air duct passes through the grille and then is blown to the air outlet frame, the pressure difference between the air flow and the air outlet frame is reduced, air outlet is smoother, and therefore abnormal sound is effectively eliminated. The installation position of the grille can effectively scatter the vortex area, meanwhile, installation operation of the grille is more convenient, the installation position is easy to operate, additional positioning pieces do not need to be added in the air duct to fix the grille, the grille only needs to be directly connected to the lower side of the air outlet frame or the upper side of the air outlet end, and the installation operation is convenient. The additional positioning piece is omitted, so that the smoothness of the air cavity of the main air duct is further improved, and the air resistance of the air cavity is reduced.

The invention relates to the technical field of air purification, and particularly discloses an air purification structure. Comprising a shell, a first filtering unit, a second filtering unit and an air inducing unit, the first filter unit is mounted at the air inlet and comprises a steady flow filter screen, so that turbulent flow pneumatic noise is prevented from being generated at the air inlet end. The shell comprises a front shell body, a middle shell body and a rear shell body, the air inducing unit is installed between the middle shell body and the rear shell body, the air inducing unit is separated through the middle shell body, and then the volume, transmitted to the outside, of noise generated by the air inducing unit in the working process is reduced. And the user experience is ensured to be good.

The invention discloses a ventilation-sound insulation integrated ultrathin metasurface grating and a using method thereof. The grating is composed of a perforated cover plate, a bottom plate, a plurality of slender cavities with different lengths formed by separating the perforated cover plate and the bottom plate through wall plates, and a peripheral grid-shaped ventilation area. According to the grille, the excellent broadband sound insulation performance can be achieved on the premise that the high ventilation quantity is guaranteed through a thin layer structure with the thickness as low as about 20 mm. The folded labyrinth resonance sound absorption units with gradient lengths are arranged in the non-ventilation area, broadband continuous sound absorption peaks can be generated, and sound absorption replaces sound insulation, so that broadband sound attenuation performance is obtained. Compared with an existing ventilation and sound insulation grille, the grille structure is thinner, larger in ventilation area and wider in working frequency band, the wide engineering application value of the grille structure is shown, a light-weight and low-frequency broadband noise reduction solution is provided for mechanical equipment such as airplanes, warships, high-speed rails and automobiles, and the mechanical equipment can be widely applied to mechanical equipment such as the airplanes, the warships, the high-speed rails and the automobiles. And the method also has wide application prospects in ventilation and sound insulation systems in green buildings.

The utility model discloses a cross-flow air duct structure and a cabinet type air conditioner indoor unit in the technical field of air conditioner products. The portions, where airflow passes through, of the two sides of the rear volute structure are segmentation flow guide structures, the front ends of the segmentation flow guide structures are fluctuant, the flow guide plates are arranged on the sides, away from the cross-flow fan, of the segmentation flow guide structures, and gaps exist between the front ends and the rear ends of the flow guide plates and the segmentation flow guide structures so that air can flow through the rear ends of the segmentation flow guide structures to move towards the front ends. The size of a gap between the front end of the flow guide plate and the dividing flow guide structure is larger than or equal to 1.5 mm, and the size of a gap between the rear end of the flow guide plate and the dividing flow guide structure is larger than or equal to the size of a gap between the front end of the flow guide plate and the dividing flow guide structure. The flow guide plate is additionally arranged, so that an air flow direction is added to the front end of the division flow guide structure, the air flow direction is forward along the division flow guide structure, the state of the air flow directly entering the cross-flow fan can be changed, the state energy of the air flow entering the cross-flow fan is dispersed, the impact on the cross-flow fan is reduced, and then the noise is reduced.

The invention discloses an operation parameter regulation and control method and platform of an air purifier, and relates to the technical field of air purification. The method comprises the steps that real-time air detection data are obtained; performing purification demand evaluation, and generating an air purification instruction; activating the air purification regulation and control model to obtain an air purification regulation and control scheme; regulation and control prediction evaluation is conducted on the air purifier in the target space, and a purification regulation and control prediction evaluation result is obtained; judging whether the purification regulation and control prediction evaluation result meets the purification regulation and control prediction evaluation expectation or not; if not, an air purification regulation and control strategy is generated; and the air purifier is controlled according to the air purification regulation and control strategy. The technical problems that in the prior art, an air purifier is not flexible enough in regulation and control and cannot respond to the air quality change in real time, so that the air purification efficiency is low, and the energy consumption is high are solved, the operation parameters of the air purifier are dynamically adjusted according to the real-time air quality data, and the air purification efficiency is improved. The technical effects of improving the air purification efficiency and reducing the energy consumption are achieved.

The invention relates to the technical field of steel structure industrial factory building design and construction, and discloses an intelligent assembly type steel structure industrial factory building which comprises a steel structure factory building, and the steel structure factory building comprises a supporting unit. According to the intelligent assembly type steel structure industrial factory building, the performance of the steel structure factory building is improved through three innovations, the supporting units are connected with key components in a groove embedded mode, a three-dimensional force transmission system of double supporting columns and a bottom frame is combined, roof loads are dispersed in a multi-path mode, stress concentration is reduced, and the assembly efficiency is improved by 40% through standardized prefabricated parts; the cushioning unit drives a spring to be compressed through hinged swing to form a collaborative energy dissipation mechanism, redundant buffering and straddle column pulling are used for restraining lateral displacement, the earthquake lateral displacement angle is reduced by 35%, the fresh air unit generates uniform vortex airflow through a five-fan-blade array embedded in a supporting beam, energy is saved by 20%, intelligent noise reduction and speed regulation are achieved to adapt to the high-temperature and high-humidity environment, and the structural stability, anti-seismic performance and environmental performance are comprehensively improved.

The utility model discloses a noise reduction device for an air source heat pump unit, which belongs to the technical field of air source heat pump units and is characterized in that effective dispersion is carried out through a breathable mesh plate, primary noise reduction treatment is carried out on airflow through a noise reduction plate, and low-frequency noise reduction treatment is carried out on noise in the airflow again through low-frequency sound-absorbing cotton. The noise reduction device for the air source heat pump unit comprises a unit body, a condenser is arranged on the unit body, air guide barrels with cooling fans are symmetrically arranged at the top of the unit body, a cooling air barrel is installed at the top of the unit body, an air guide cavity is formed in the cooling air barrel, and a ventilation mesh plate is installed at the middle section of the air guide cavity. A noise reduction plate is installed on the inner side edge of the heat dissipation air cylinder and corresponds to the position between the two breathable mesh plates, an air outlet is formed in one end of the air guide cavity, and a plurality of pieces of low-frequency sound absorption cotton are installed at the position, corresponding to the air outlet, of the heat dissipation air cylinder.

The invention discloses a low-energy-consumption control method and equipment for a large centrifugal fan and a storage medium, and relates to the technical field of environment control and energy management. Environmental parameters in the clean room are monitored in real time through the multi-sensor fusion technology, the air volume prediction model is established through the support vector machine algorithm, the target air volume range is accurately determined, the air conditioning system is controlled to adjust the air volume, the cleanliness requirement of medical operation is met, a draught fan flexibly adapts to environmental changes, and the cleaning efficiency is improved. The problem that a traditional fan cannot adjust the air volume according to the real-time environment is solved, in the speed adjusting process, energy consumption and noise are monitored in real time, when the energy consumption and noise exceed the standard, the rotating speed is adjusted to the minimum value meeting the requirement through a fuzzy control algorithm, intelligent algorithm parameters are optimized, the control precision and the response speed are improved, and energy waste is reduced. The problems that a traditional fan is high in energy consumption and low in efficiency are solved.

The invention discloses a compressor control method and device, air conditioning equipment and a storage medium, and the method comprises the steps that in the variable-frequency operation process of a compressor, the target operation frequency of the compressor is obtained; when the target operation frequency of the compressor is lower than the set frequency, the carrier frequency of the compressor is controlled to be within the first frequency range; the frequency point in the first frequency range is larger than the hearing frequency range of the user, the motion noise generated when the compressor operates at the frequency lower than the set frequency is smaller than the electromagnetic noise generated when the carrier frequency of the compressor is in the second frequency range, and the frequency point in the second frequency range is smaller than the frequency point in the first frequency range. The compressor is used for solving the technical problem that electromagnetic noise is obvious when the compressor operates at low frequency.

The invention discloses a muting control method and device for multi-split equipment, the multi-split equipment and a storage medium, and relates to the technical field of multi-split equipment control. In response to a muting control instruction, the current operation mode of the multi-split equipment, water temperature data of a water tank of a heat recovery unit and the current outdoor environment temperature are obtained; determining a target temperature interval where the current outdoor environment temperature is located based on the current operation mode and the current outdoor environment temperature; and at least one of a heat recovery unit water tank, an outdoor unit and a compressor is controlled according to at least one of the water temperature data, the current operation mode and the target temperature interval, so that mute control over the multi-split equipment is achieved. By controlling at least one of the water tank of the heat recovery unit, the outdoor unit, the fan rotating speed of the outdoor unit and the compressor, the problem of neighborhood complaints caused by noise of the outdoor unit of the heat recovery air conditioner is effectively solved, and the user experience and the refrigerating and heating effect are improved on the premise that it is guaranteed that the noise of the outdoor unit does not disturb residents.

The invention relates to the technical field of household appliances, and discloses a refrigeration range hood which comprises an air conditioner assembly, a refrigeration assembly and a control assembly. The range hood assembly is arranged below the air conditioner assembly and comprises an air cabinet and a range hood fan, a condensation air opening is formed in the air cabinet, and the condensation fan is connected with the condensation air opening; the range hood fan is arranged in the air cabinet; the flow guide partition plate is arranged in the air cabinet, the flow guide partition plate is matched with the inner wall of the air cabinet to form a flow guide cavity, the air inlet end of the flow guide cavity is communicated with the condensate air opening, the air outlet end of the flow guide cavity is communicated with an air inlet of the range hood fan, and the flow guide partition plate comprises an extension section and an air guide section which are sequentially arranged from top to bottom; the air guide section extends to the side wall of the air cabinet from the bottom edge of the extension section. According to the refrigeration range hood, wind resistance can be reduced, the air volume can be increased, and noise reduction is facilitated.

The invention provides a method and device for optimizing noise of an indoor fan, an air conditioner and a storage medium, operation parameters and scene information of the air conditioner are obtained, a to-be-used rotating speed relation is determined from pre-stored corresponding relations of parameters and rotating speed relations on the basis of the operation parameters, and the to-be-used rotating speed relation comprises the corresponding relation of information and rotating speed; and determining a target rotating speed based on the scene information and the corresponding relation between the information and the rotating speed, and adjusting the rotating speed of the indoor fan based on the target rotating speed to optimize the noise. Through the mode, the corresponding target rotating speed can be determined according to different operating parameters and scene information, so that the noise is optimized, the noise can be reduced under the condition that the structure of the air conditioner does not need to be changed, and the noise reduction effect can be improved.

A tie band with various locking methods is disclosed. The tie band can include a head and a band extending from the head. The head includes a first flange, a second flange, and a connector connecting the first flange and the second flange. The connector defines a hole in the head. The band includes two elongate faces, two side faces, and protrusions extending from the side faces. In some aspects, the band is fusible to the head by applying heat to the head, at least one of the protrusions, or a combination thereof when the portion of the band is inserted through the hole.

The invention relates to an air conditioning system for a vehicle (5), comprising a housing with a first shell (16) and a second shell (14), and a refrigerant circuit arranged in the housing, which includes an inner heat exchanger (4) for heat exchange with interior air of the vehicle (5), an inner fan (6) associated with the inner heat exchanger (4), an outer heat exchanger (10) for heat exchange with ambient air of the vehicle (5), an outer fan (12) associated with the outer heat exchanger (10), a compressor (14) for compressing a refrigerant, and an expansion device (2) for reducing the pressure of the refrigerant, wherein the first shell (16) and the second shell (14) each have an ambient air area (16.11, 14.11) and an interior air area (16.2, 14.2), and the ambient air area (14.11) of the second shell (14) through a partition wall (20) from the interior air area (14.2) of the second shell (14) is separated, wherein the external blower (12) is arranged in the ambient air area (16.11) of the first shell (16) opposite an intake duct (22) provided in the ambient air area (14.11) of the second shell (14), which is limited on the inside air area side by the partition wall (20) of the second shell (14), wherein a sound reduction element (30) is provided on the intake duct side of the partition wall (20) of the second shell (16).