3126results 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 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 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 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 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 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 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).

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.

An integral assembly type operating room takes an operating room as a medical unit, an enclosure structure comprising a bottom groove, an outer groove, a main beam, a wall plate, an inclined ceiling hanging groove, a filling plate hanging groove, an air supply ceiling, cleaning equipment and a power distribution system are integrally and modularly designed, and industrial production and standardized installation are achieved. After assembly is completed, the cleaning equipment wrapped by the silencing enclosure is integrally installed in a passageway between the decorative plate and the framework, an air return opening and an air exhaust opening are formed in the framework, and the air return opening and the air exhaust opening are connected with the cleaning equipment and an exhaust fan through composite silencing air pipes correspondingly. By means of the double noise reduction scheme formed by the composite noise reduction air pipe and the noise reduction enclosure structure, noise generated by the cleaning equipment and regeneration noise generated in the air flowing process can be effectively controlled within the standard range. The invention further provides an assembly method of the integral assembly type operating room, through the assembly method, the integral type operating room can be rapidly assembled, the assembly efficiency is improved, and the construction period is greatly shortened.

An air-conditioning type range hood is characterized in that an oil smoke suction module, a compressor, a heat dissipation module and an indoor unit module are installed in a machine shell, an air inlet channel is formed between an air inlet of an oil smoke suction fan and a corresponding side plate of a fan frame, and the air inlet of the oil smoke suction fan is divided into a first air inlet and a second air inlet by a partition plate in the air inlet channel; the air outlet of the cooling fan is communicated with the first air inlet, and the second air inlet is an oil smoke suction inlet. According to the air conditioner type extractor hood, after the partition plate is installed in the air inlet channel, heat dissipation airflow enters the oil smoke suction fan through the first air inlet, oil smoke airflow enters the oil smoke suction fan through the second air inlet, the probability that the heat dissipation airflow and the oil smoke airflow interfere with each other is reduced, balance between the air volume of the heat dissipation fan and the air volume of the extractor hood is facilitated, and fan noise is reduced; the heat dissipation effect of the heat dissipation fan on the condenser is guaranteed, the performance of the oil smoke suction fan can be guaranteed, and the oil smoke suction effect is guaranteed. In addition, lampblack is prevented from entering the cooling fan, the probability that the condenser is polluted by the lampblack is greatly reduced, and the energy efficiency of the air conditioner is improved.

The utility model provides an upper air outlet cavity of a mobile air conditioner. The upper air outlet cavity comprises an upper volute assembly and a lower volute assembly which are arranged in an air conditioner shell. The upper volute assembly comprises an upper volute and a first impeller arranged in the upper volute, a first air inlet and a first air outlet are formed in the side wall of the upper volute, the first air outlet is formed upwards, one or more cold air outlets corresponding to the first air outlet are formed in the top of the air conditioner shell, and the first air inlet is communicated with the first air outlet. An evaporator for cooling airflow is arranged on an air inlet path of the first air inlet; the lower volute assembly comprises a lower volute and a second impeller arranged in the lower volute, a second air inlet and a second air outlet are formed in the side wall of the lower volute, the second air inlet is arranged downwards, and a condenser is arranged on an air inlet path of the second air inlet. The upper air outlet cavity of the mobile air conditioner is compact in structure, long in air supply distance, capable of adjusting the air outlet direction and angle and good in using effect.

The utility model discloses a silencer and an air conditioner. The silencing device is applied to the air conditioner, the air conditioner comprises an indoor heat exchanger, an outdoor heat exchanger, a four-way valve and a compressor, the inlet end of the silencing device is communicated with the exhaust end of the compressor, the outlet end of the silencing device is connected with the four-way valve, and the silencing device comprises at least two silencing branches. Each silencing branch is correspondingly provided with a silencer, and the connection relation between different silencers can be changed; and the controller is used for controlling the connection relationship between different silencers in the silencing device, so that the silencing parameters of the silencing device are changed, and the silencing amount of the silencing device is changed. By means of the air conditioner, noise of different frequencies can be reduced, the noise between the indoor part and the outdoor part of the air conditioner can meet the noise requirement, and the user experience is improved.

The utility model provides a humidifying device and an air purifier. The humidifying device comprises a water tank, a wet curtain assembly and a water level monitoring and water path module, the water level monitoring and water path module comprises a separation cover arranged in the water tank and provided with a separation cavity extending from the bottom of the separation cover to the top of the separation cover, and a water inlet used for communicating the separation cavity with the water tank is formed in the bottom of the separation cover; a water return port communicated with the separation cavity is formed in the top of the separation cover, so that redundant water of the wet curtain assembly flows back to the separation cavity through the water return port; the water level monitoring assembly is arranged in the separation cavity and used for monitoring the water level in the separation cavity; the water pump is arranged in the partition cavity and used for feeding water in the partition cavity into the wet curtain assembly. According to the humidification device, redundant water of the wet curtain assembly flows back into the separation cover, due to the fact that the space in the separation cover is small, the redundant water can flow along the inner wall of the separation cover more easily, water surface fluctuation caused by splashing is avoided, and then the monitored water level is accurate.

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 provides an obliquely-installed air duct of a mobile air conditioner, which comprises a shell serving as an installation carrier, and the shell is hollow and forms an installation cavity; the volute assembly is obliquely arranged in the mounting cavity, the volute assembly comprises an upper volute assembly and a lower volute assembly located below the upper volute assembly, an upper volute cavity and a lower volute cavity are formed in the upper volute assembly and the lower volute assembly respectively, the upper volute cavity and the lower volute cavity are coaxially arranged, and the axis of the upper volute cavity and the axis of the lower volute cavity incline to the horizontal plane; the side wall of the upper volute cavity is provided with an exhaust channel, the exhaust channel extends upwards, is in butt joint with a first air outlet in the top of the shell and is used for discharging air, an evaporator is arranged on an air inlet path of the upper volute cavity, and a condenser is arranged on an air inlet path of the lower volute cavity. The inclined air duct of the mobile air conditioner is compact in structure, small in size, low in manufacturing cost and use cost, convenient to assemble, high in air outlet speed, long in air supply distance, low in working noise and good in use effect.

The utility model provides an electronic expansion valve which comprises a valve seat portion, a valve core portion, a valve core portion, a valve core portion, a valve core portion, a valve core portion, a valve core portion, a valve core portion and a valve core portion, and is characterized in that the valve seat portion is provided with a connector close to the end of the valve seat portion; the silencing assembly is arranged in the connecting opening, and the limiting part can axially limit the silencing assembly; and the connecting pipe is arranged on the outer side of the connecting opening in a sleeving mode, and filling materials are arranged between the limiting part and the connecting pipe. By means of the technical scheme, the problem that in the prior art, a silencing assembly is extremely prone to falling off from the interior of a connecting opening can be solved.

The invention provides a cross-flow fan and an air conditioner, and belongs to the technical field of air conditioners. The cross-flow fan comprises a shell, a volute, a volute tongue and a cross-flow impeller. The volute and the volute tongue are both connected with the shell, an air inlet channel and an air exhaust channel are formed between the volute and the volute tongue, the volute tongue is provided with a backflow channel, an air inlet of the backflow channel is communicated with the air exhaust channel, and an air outlet of the backflow channel is communicated with the air inlet channel; the cross-flow impeller is located in the volute and between the air inlet channel and the air exhaust channel, and is rotationally connected with the shell. In the direction parallel to the axis of the cross-flow impeller, the backflow channel is located in the middle of the volute tongue, and the length of the backflow channel is smaller than the total length of the volute tongue. By the adoption of the cross-flow fan, the position of the eccentric vortex is more stable, so that the pressure resistance of the cross-flow fan is improved, stall is weakened or even delayed, noise is avoided, the machining difficulty is reduced, the machining time is shortened, and the machining efficiency of the cross-flow fan is improved.

The invention relates to an air quality adjusting technology, and discloses an air conditioner fresh air intelligent control system and method based on multi-parameter linkage, through multi-parameter linkage, a fresh air system is comprehensively and optimally controlled according to complex changes of indoor environment parameters, and the user experience is improved. According to the scheme, the TVOC concentration in indoor air, the rotating speed of an air conditioner fan, the indoor light intensity and the indoor temperature and humidity are detected in real time; according to the TVOC concentration detection value, the rotating speed of the air conditioner fan, the light intensity detection value and a preset corresponding priority weight, the rotating speed of a fresh air motor is adjusted; and when the fresh air system runs for a certain time, the rotating speed of the fresh air motor is controlled according to the indoor temperature and humidity and the anti-condensation control logic, after the anti-condensation control quitting condition is met, anti-condensation control is quitted, and linkage adjustment of the TVOC concentration, the rotating speed of the air conditioner fan, the light intensity and the rotating speed of the fresh air motor is conducted again. The air purifier is suitable for various places needing high-quality indoor air.

A molded equipment pad having a top deck, side walls, underlying reinforcing radial ribs, and underlying reinforcing arc-shaped ribs. The arc-shaped ribs may include a series of concentric arc-shaped ribs that are centered on the center of the equipment pad and that extend toward the side walls of the pad and a number of distributed circular hubs. Alternatively, the arc-shaped ribs may include a series of concentric arc-shaped ribs that are centered on the center of the equipment pad that end short of the side walls, a series of opposing arc-shaped ribs that are centered on the corners of the equipment pad, and a number of distributed circular hubs.

The invention discloses an air conditioner, a control method and device of the air conditioner and a computer readable storage medium, and the method comprises the steps that when the automatic wind function of the air conditioner is started, the indoor temperature is obtained; when the indoor temperature changes, a first indoor temperature before the indoor temperature changes and a second indoor temperature after the indoor temperature changes are obtained; a first temperature difference value between the second indoor temperature and the first indoor temperature is obtained, and the temperature offset is determined according to the first temperature difference value; determining a third indoor temperature according to the first indoor temperature or the second indoor temperature and the temperature offset; and the target rotating speed of an indoor fan of the air conditioner is determined based on the third indoor temperature, and the indoor fan is controlled to operate according to the target rotating speed. According to the control method, the noise problem caused by frequent change of the wind speed due to temperature fluctuation can be prevented, and the use experience of a user is improved.

The invention discloses a silencer, an air conditioner and a design method of the silencer, the silencer comprises a shell and a plurality of acoustic units arranged in the shell, and the shell is mounted on the outer wall of an air duct and provided with a mounting surface facing the air duct; the acoustic unit comprises a plurality of half-wavelength pipes, each half-wavelength pipe is provided with an extended first acoustic channel, and a first inlet and a first outlet of each half-wavelength pipe are formed in the mounting surface; wherein the first acoustic channel lengths of the plurality of half-wavelength tubes are set based on different target noise reduction frequencies so as to cover a predetermined noise reduction frequency band. The silencer is installed outside the air duct through the shell, it is guaranteed that the original circulation area and shape of the air duct are not affected at all, and therefore the 100% ventilation rate is achieved, and the core contradictions that the air volume is sacrificed and the performance of an air conditioner is reduced when a traditional noise reduction device is additionally installed are solved. Secondly, according to the scheme, the resonance sound absorption principle of a series of half-wavelength tubes is utilized, and the principle has an excellent control effect on low-frequency noise.

The invention relates to the technical field of air conditioners, and discloses a noise reduction method for a multi-connected air conditioning system, which comprises the following steps: acquiring high pressure and low pressure of the air conditioning system under the condition that a compressor is started according to a preselected frequency; and the opening degree of an indoor electronic expansion valve corresponding to the started indoor unit is controlled according to the high pressure and the low pressure of the air conditioning system. According to the method, the pressure difference before and after the indoor electronic expansion valve can be adjusted to a proper range, so that the refrigerant turbulence degree is reduced, the noise generated in the starting stage of the air conditioning system is reduced, and the noise reduction effect of the air conditioning system is improved. The invention further discloses a noise reduction device for the multi-connected air conditioning system, the multi-connected air conditioning system and a computer readable storage medium.

The utility model discloses an adjustable sound absorber which comprises a cylindrical cavity shell, an inner cavity of the cylindrical cavity shell is provided with three partition plates, the partition plates divide the inner cavity of the cylindrical cavity shell into three fan-shaped resonant cavities, the sizes of the three resonant cavities are the same, the side wall of the cylindrical cavity shell is provided with three sound inlets, and the sound inlets are communicated with the three fan-shaped resonant cavities. The three sound inlets correspond to the three resonant cavities respectively, a fan-shaped shell is arranged in each resonant cavity, a first through hole is formed in the top of each fan-shaped shell, a sound wave absorption channel is defined by the side wall of each fan-shaped shell and the inner wall of the corresponding resonant cavity, the sound inlets are communicated with the sound wave absorption channels, and an impedance modulation interface is formed in a top plate of the cylindrical cavity shell. The impedance modulation interface is communicated with an inner cavity of the fan-shaped shell through the first through hole, a second through hole is further formed in the side wall of the fan-shaped shell, and the sound wave absorption channel is communicated with the inner cavity of the fan-shaped shell through the second through hole; and the shielding piece is provided with a shielding part, and the shielding part can rotate to the position of the impedance modulation interface in the horizontal direction. The adjustable sound absorber is good in ventilation effect, and the adjustable sound absorption frequency is large in low-frequency absorption coverage range.

The invention provides an air conditioner, a control method thereof and a readable storage medium. The air conditioner control method comprises the steps of detecting and obtaining an indoor temperature value and an outdoor temperature value; acquiring a set temperature value; the initial frequency and the inner ring temperature coefficient of the compressor are obtained according to the indoor temperature value and the set temperature value, and the outer ring temperature coefficient is obtained according to the outdoor temperature value and the set temperature value; acquiring a basic opening degree corresponding to the initial frequency; an initial opening degree is generated according to the basic opening degree, the inner ring temperature coefficient and the outer ring temperature coefficient; and controlling the air conditioner to start according to the initial opening and the initial frequency. The air conditioner and the readable storage medium can realize the air conditioner control method. By adjusting the initial opening degree of the electronic expansion valve, the system rapidly reaches a stable operation state in the initial starting stage, and liquid flow sound is effectively reduced.

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.