319results about How to "Guaranteed air volume" patented technology

The invention relates to the field of household appliance control, in particular to a self-compensation control method and system for the air volume of an air conditioner, and the air conditioner. The method comprises the following steps: acquiring the current filth blockage degree of a dust filtering screen of the air conditioner; acquiring the corresponding compensation for the rotating speed of a draught fan according to the current filth blockage degree; acquiring the target rotating speed of the draught fan according to the compensation for the rotating speed of the draught fan; and controlling the running of the draught fan according to the target rotating speed of the draught fan. According to the method provided by the invention, the filth blockage degree of the dust filtering screen of the air conditioner is detected, and the corresponding compensation is made for the rotating speed of the draught fan, so that the air volume of the air conditioner can be prevented from being lower than that outputted before filth blockage, and the air volume required by the system can still be outputted by the air conditioner in a dust-cumulated manner. Accordingly, not only are the refrigerating and heating effects of the air conditioner as well as the use comfort of a user improved, but also the energy-saving and environment-friendly properties are further achieved.

The invention discloses a fan which comprises a base, an air outlet element and an airflow generation device, wherein an air inlet cavity is formed in the base, and air inlets communicated with the air inlet cavity are formed in the base; the air outlet element is arranged on the base, an air outlet cavity communicated with the air inlet cavity is formed in the air outlet element, and a plurality of slits extending in the length direction of the air outlet element are formed in the air outlet element so as to form a plurality of air outlets communicated with the air outlet cavity; the airflow generation device is arranged in the air inlet cavity, absorbs outside air into the air inlet cavity and guides the air to the air outlet cavity. According to the fan, exposure of fan blades can be avoided, and the fan has the advantages of use safety, easiness in cleaning, large air volume, high air speed and the like.

The invention relates to an adjustable distribution air flue for a rail transit air conditioner and a control method of the adjustable distribution air flue. The adjustable distribution air flue comprises a distribution air flue body. An air inlet of the distribution air flue body is connected with an air conditioner unit. The two ends of the of the distribution air flue body are provided with a first air outlet and a second air outlet correspondingly. The adjustable distribution air flue has the characteristics that an air regulation structure used for regulating the air outlet volume of the first air outlet and the second air outlet is installed in the distribution air flue body; the air regulation structure comprises a first flow guide plate and a second flow guide plate which guide outlet air to be discharged through the first air outlet and the second air outlet correspondingly; the upper end of the first flow guide plate is connected with the upper end of the second flow guide plate; the lower end of the first flow guide plate is connected with the lower end of the second flow guide plate through a connection plate; a tooth-shaped guide rail is fixed to the connection plate of the air regulation structure; a servo motor is installed on the outer side of the distribution air flue body; a power output shaft of the servo motor is connected with a gear; and the gear meshes with the tooth-shaped guide rail. According to the adjustable distribution air flue for the rail transit air conditioner and the control method of the adjustable distribution air flue, air distribution in a carriage can be optimized, and the noise level in the air flue can also be lowered effectively.

The invention discloses a closed dust removal method and system for a tunneling working face, comprising a press-in fan, a press-in fan, a metal frame gauze, an atomizing nozzle, a dust removal fan and a draw-out fan; the press-in fan forms The air flow is blown out through the press-in type blower to form an air curtain that can close the entire working section of the roadway, and at the same time blow the dust to the other side of the roadway; the atomizing nozzle and gauze mesh cooperate to form a dust control water curtain on the other side of the roadway The gauze and the extractor fan are connected to the dust removal fan. Under the action of the dust removal fan, the dust in the dust accumulation area is sucked into the extractor fan from the dust collection hood, and then enters the dust removal fan for purification. The design method of the present invention is simple and practical, easy to operate, less maintenance workload, does not hinder the normal operation of on-site personnel, the dust removal efficiency exceeds 96%, and the dust removal effect is good.

The invention provides a cleaning and determination method of a filter net, an air-energy water heater, and a storage medium. According to the method, accumulative running time of a fan or compressorof an air-energy water heater within each period is monitored; when the accumulative running time of the fan or compressor is larger than a corresponding preset threshold, filter net cleaning prompting information is outputted; and after an off signal and a closing signal that are fed back by a microswitch are received, zero clearing is carried out on the accumulative running time of the period soas to carry out determination in a next period. According to the cleaning method, the filter net is determined to be cleaned based on the off signal and the closing signal fed back by the microswitchto ensure the cleaning state of the filter net, so that the blast capacity of the evaporator is guaranteed; the heat exchange effect of the air-energy water heater is improved; and a phenomenon thatthe operation stability and service life of the air-energy water heater are affected when the heat exchange effect is poor is avoided, so that the operation stability and service life of the air-energy water heater are improved.

The invention provides an air-conditioner which can guarantee the upwardly-blown wind while operation of cooling and guarantee the downwardly-blown wind while operation of heating. A fan cover (10), which covers a centrifugal fan (9) in a casing (2) of the air-conditioner (1), is provided with a circumferential wall part (11) which surrounds the centrifugal fan circumferentially and includes an inner circumferential face (11a) on which the air flows in positive order. A part in the circumferential wall part, which is provided with an down blowing-out hole (6) in front of a tangent direction of the air current, forms a cutting hole (12) communicated with an down blowing-out pipe (15) connected with the down blowing-out hole. Upper part of the fan cover forms a connection part (14) connected with an up blowing-out pipe (16), the up blowing-out pipe is connected with an up blowing-out hole (4); a tongue part (13) is formed at one side (14a) of the connection part. The inner circumferential face is formed from the part formed with the cutting hole (12) to another side (14b) of the connection part.

The invention discloses an air conditioner indoor unit. The air conditioner indoor unit comprises a shell, an air supply part, an air duct part, an oblique flow fan and a heat exchanger. An air inlet is formed in the shell. The air supply part comprises an arc-shaped air supply shell. The air supply shell comprises a first arc-shaped wall and a second arc-shaped wall surrounding the first wall. An air supply cavity is defined by the first wall and the second wall, and an arc-shaped nozzle communicated with the air supply cavity and the outside is formed in the axial front end of the air supply shell. Gas inlets communicated with the air supply cavity are formed in the two peripheral ends of the air supply shell. The air duct part is contained in the shell and communicated with the air inlet and the gas inlets. The oblique flow fan is arranged in the air duct part and used for supplying air to the gas inlets. The heat exchanger is arranged in the shell and located between the air inlet and the oblique flow fan. Thus, due to the fact that the heat exchanger is arranged between the air inlet and the oblique flow fan, the air subjected to heat exchange in the heat exchanger is supplied into the air supply part, finally the air is sprayed out of the nozzle and entrains surrounding air at the same time, and therefore the air output amount is guaranteed.

The invention relates to the field of household appliance control, in particular to an air conditioner air volume self-compensation control method, a control system and an air conditioner. The method comprises the following steps: the current filth blockage degree of an air conditioner dust filter gauze is obtained; according to the pre-built draught fan rotating speed compensation amount calculation formula, the draught fan rotating speed compensation amount corresponding to the current filth blockage degree is obtained; according to the draught fan rotating speed compensation amount, the target rotating speed of a draught fan is obtained; and according to the target rotating speed of the draught fan, the draught fan is controlled to run. Through detection of the filth blockage degree of the air conditioner dust filter gauze, compensation for the wind speed of the draught fan is correspondingly carried out according to the filth blockage degree, and therefore the air outlet volume of the air conditioner cannot be reduced compared with the volume of the air conditioner before filth blockage, it is ensured that the air conditioner can still output the air volume needed by the system under the dust accumulation state, the refrigeration and heating effect of the air conditioner are improved, the use comfort of a user is improved, more energy is saved, and the environment friendliness is better achieved.

The invention discloses an air supply device which comprises a shell, a motor, an oblique flow wind wheel, at least one axial flow wind wheel and a volute, wherein the shell is provided with a cylindrical cavity of which two ends are open; the motor is accommodated in the cylindrical cavity of the shell and is fixed through a motor bracket; the oblique flow wind wheel is arranged at one end of a motor shaft of the motor; the at least one axial flow wind wheel is arranged at the other end of the motor shaft; oblique flow fan blades are arranged on the oblique flow wind wheel; axial flow fan blades are arranged on the axial flow wind wheel; the volute is arranged corresponding to the axial flow wind wheel and the oblique flow wind wheel and is fixed on the inner wall of the shell; the motor bracket is fixed on the inner wall of the shell or the inner wall of the volute; and an air duct is formed by the axial flow fan blades, the oblique flow fan blades and the volute. The inner space of the shell can be effectively used; and meanwhile, the noise is easily reduced to a standard range under the condition that the air quantity is guaranteed, and the air supply distance is farther. The invention also discloses an air-conditioning indoor unit.

The invention discloses an air-conditioner with the wind-feeling-free function and a control method thereof, and relates to the technical field of air-conditioners. The air-conditioner with the wind-feeling-free function is invented in order to solve the problem that an air deflector of an air-conditioner in the prior art can generate condensation easily in the wind-feeling-free mode. The air-conditioner with the wind-feeling-free function comprises a shell, a wind screen assembly, a humidity sensor and a control unit. An air outlet is formed in a front panel of the shell. The wind screen assembly comprises a wind screen and a driving device. The driving device can drive the wind screen to move between a retracted position and an extended position. The humidity sensor is used for detecting the humidity of indoor air. The control unit is connected with the humidity sensor and the driving device, and can control the driving device to operate and further control the operation mode of the air-conditioner. The air-conditioner with the wind-feeling-free function and the control method thereof can be used for indoor air adjustment.

The invention discloses an air conditioner fresh air all-in-one machine. The air conditioner fresh air all-in-one machine comprises a compressor, an evaporator and a condenser, wherein the compressor, the evaporator and the condenser are mounted in the same machine body; the machine body comprises a fresh air channel; the fresh air channel is formed in the upper part of the machine body and comprises a fresh air inlet and a fresh air outlet which are formed in opposite sides of the machine body; the evaporator is arranged at the fresh air inlet; and a filter unit is further arranged in the fresh air channel. The air conditioner fresh air all-in-one machine not only can supply fresh air, but also can be used for pre-cooling or pre-heating the fresh air, and further can be used for filtering the fresh air, so that an indoor environment can be fresh, healthful and comfortable.

The invention provides a centrifugal volute which comprises a front wall plate (1) and side wall plates. The side wall plates comprise a first side wall plate (3) and a second side wall plate (4). The first side wall plate (3) comprises a volute tongue (33), an upper side wall plate (3) connected with the volute tongue (33), and a lower side wall plate (32) connected with the volute tongue (33). The lower side wall plate (32) is connected with the second side wall plate (4). The centrifugal volute is characterized in that a first sound attenuation hole (6) is formed in the lower side wall plate (32), and a first sound attenuation chamber (5) communicated with the first sound attenuation hole (6) is arranged on the outer side of the lower side wall plate (32). By the adoption of the structure, the noise peak value of the centrifugal volute and the noise peak value of an air conditioner indoor unit can be effectively reduced, the effect of improving sound quality is achieved, and air volume can be ensured.

To provide a clothes drying machine with a heat pump for drying the clothes, capable of preventing the temperature of a condenser and the pressure of a refrigerant on the high-pressure side in the latter half period of the drying operation from becoming preset values or higher, and capable of increasing the speed of temperature rise in a drying chamber in the initial period of the drying operation. Outside air is introduced during the drying operation from an outside air intake disposed at an area between a place where an evaporator is disposed and a place where the condenser is disposed in a ventilation path, so that the temperature of the condenser and the pressure of the refrigerant on the high-pressure side in the latter half of the drying operation will not become preset values or higher. As a result, it is not necessary to reduce the labor of a compressor, and therefore, a high drying performance can be achieved in the clothes drying machine. By making a PTC heater provided at the outside air intake generate heat in the initial period of the drying operation, outside air can be introduced into the ventilation path while heated by the PTC heater. Accordingly, the speed of temperature rise in the drying chamber can be increased in the initial period of the drying operation, and therefore, the drying operation can be finished early.

The embodiment of the invention discloses a flow guiding ring structure, an axial flow fan and an air conditioner, relates to the denoising field and is used for lowering the pneumatic noise of the axial flow fan in the using process on the premise that the air outflow amount of the fan is guaranteed. The flow guiding ring structure comprises a ring body; the ring body comprises a closed cavity and a through hole; the minimum diameter position of the ring body is provided with open holes; the cavity is communicated with the through hole through the open holes; and fluid in the through hole can enter the cavity through the open holes. Due to the above technical scheme, on the premise that the Venturi tube effect of the flow guiding ring structure is guaranteed, the open structure is added on the surface, the turbulent energy of blade top airflow is transmitted out of a fan area in the radial direction, and therefore the denoising purpose is achieved.

The invention discloses an indoor unit of an air conditioner and the air conditioner. The indoor unit of the air conditioner comprises a front face plate, a rear back plate, a heat exchanger, a wind wheel, a front volute and a back volute, wherein the front face plate and the rear back plate are oppositely arranged to form an air inlet and an air outlet, the heat exchanger and the wind wheel are located between the front face plate and the rear back plate, and the front volute and the back volute are arranged on the two opposite sides of the wind wheel to form an air channel. The air inlet is located at the upper end of the front face plate and the upper end of the rear back plate and provided with an air inlet grille. The heat exchanger comprises a first heat exchanger, a second heat exchanger and a third heat exchanger, wherein the first heat exchanger, the second heat exchanger and the third heat exchanger are sequentially distributed around the wind wheel from back to front. The third heat exchanger is located between the wind wheel and the front face plate. The horizontal distance between the axis of the wind wheel and the third heat exchanger is 0.4-0.6 times that between the axis of the wind wheel and the front end of the air inlet grille. By the adoption of the indoor unit of the air conditioner and the air conditioner, the air feeding amount of the heat exchanger can be guaranteed, an enough space is formed between the wind wheel and the third heat exchanger to make turbulent airflow stable, and then the noise caused by the fact that the turbulent airflow impacts the wind wheel is lowered.

The invention relates to a concrete mixing plant which can carry out staged dedusting in the working process and a method; the concrete mixing plant consists of a stirring mill, an aggregate temporary storage bin, a main tower composed of a powder metering device, a dust removing device and a control unit. The stirring mill is communicated with the dust removing device by a first dust transfer passage, the powder metering device is communicated with the aggregate temporary storage bin by a second dust transfer passage, the dust removing device is connected with the aggregate temporary storage bin and is communicated with the aggregate temporary storage bin by a third dust transfer passage, the third dust transfer passage is internally equipped with a ventilation door which can be opened or closed, the ventilation door can be manipulated by a door operation mechanism to shift between an open position and a closed position, and the door operation mechanism is arranged to be controlled by the control unit. The staged dedusting method is characterized in that: the dust removing device can carry out dedusting operation during the process of putting aggregate into the aggregate temporary storage bin by optionally closing or opening the ventilation door, while dedusting operation is stopped during the process of transferring the aggregate from the aggregate temporary storage bin into the stirring mill.

The invention provides a high and low temperature thermal-humidity test chamber which comprises a test chamber body module, an electric chamber body module and a refrigerating system, wherein the electric chamber body module is arranged on the back surface of the test chamber body module; and the test chamber body module is connected with the electric chamber body module by a fast connection buckle. An inlet air ducting device and a return air ducting device are arranged on the two sides of a test room; each of the air ducting devices consists of a plurality of adjustable air ducting blocks distributed in an array manner, the air speed and the air quantity of the whole face can be adjusted by adjusting the air speed and the air quantity by every point on a single face, so that the uniformity of the air quantity and the air speed inside the test room can be ensured, and therefore, the uniformity of temperature and humidity inside the test room is ensured, and the accuracy of a testing result is ensured further.

An improved scroll case structure of a wall-hanging air conditioner comprises an outdoor unit of the wall-hanging air conditioner and a scroll case of an indoor unit, two fans are arranged in two parallel round holes of the scroll case in parallel, arc-shaped bodies which are protrudent to the outside are respectively arranged on two outside wall surfaces of the scroll case, and a partition board which is protrudent to the outside from the bottom part of the inner wall is arranged in the middle of the two parallel round holes on the inner wall of the scroll case in the longitudinal direction. The partition board is arranged on the scroll case body by one-batch forming. As the improved scroll case structure adopts the structure, the two fans become independent fan systems between an air outlet and a heat exchanger, thereby being capable of avoiding the mutual interference between the two fans during the rotation, reducing the air quantity loss of the two fans when entering the heat exchanger and improving the heat exchange efficiency. The improved scroll case structure can ensure the air quantity needed by indoor and outdoor heat exchange and optimize the working environment.

The invention discloses a particle filtering device for a bus and a regenerating method thereof. The particle filtering device has a simple structure, a small size and low manufacturing cost, and is convenient to mount. The device comprises a shell made of a stainless steel material, and a ceramic filter used for filtering particles in tail gas discharged from the bus; the front end of the shell is provided with a gas inlet pipe connected with a gas exhausting port of an engine; the rear end of the shell is provided with a gas exhausting pipe; the shell is provided with a bypass pipe for discharging the particles; and the bypass pipe is provided with a butterfly valve, a pneumatic component, an electromagnetic valve and a controller for controlling the electromagnetic valve. After the bus is stopped at a fixed place, a joint at the end part of the gas exhausting pipe is connected with a compressed air source for regenerating outside the bus; compressed air is spurted, so that the particles fall off from the filter; the particles falling off enter a particle collecting device outside the bus through the bypass pipe; the size of the particle filtering device is equivalent with that of a silencer on the bus; and the remodeling is convenient.

The invention belongs to site ventilation technologies and particularly relates to an intelligent local ventilation system applied to mines underground. The intelligent local ventilation system comprises a local ventilator, a speed adjusting device and a sensor or an underground signal monitoring system, wherein the local ventilator is a switch reluctance local ventilator. The speed adjusting device is an intelligent speed adjusting device and comprises a power source filter, a contactor, a switch reluctance controller, a programmable logic controller (PLC) control system 1, an intrinsically-safe isolating circuit and a transformer. The sensor is a gas, temperature and wind speed sensor. The sensor or the underground signal monitoring system is connected with the PLC control system 1 through the intrinsically-safe isolating circuit. Compared with the prior art, the intelligent local ventilation system is simple in structure, convenient to maintain, small in electromagnetic interference, high in system efficiency and long in service life, runs reliably and can achieve intelligent speed adjustment.

A centrifugal powder dust separator for electric locomotive and ship is composed of concentric internal and external cylinders, a conic dust-collecting hopper connected to lower end of external cylinder, a centrifugal boosting blower with arc airflow collecting unit at the upper part in internal cylinder, a stream-line guider at the bottom of internal bottom, and the exhaust pipes from inside of internal cylinder to outside of external cylinder.

The invention discloses a seated and hung dual-purpose air conditioner which comprises a shell (1), a heat exchanger and an air-suction fan (4), wherein the heat exchanger and the air-suction fan (4) are arranged in the shell (1); the heat exchanger comprises a first heat exchanger (2) and a second heat exchanger (3) which are opposite to each other and form a V-shaped groove; the air-suction fan (4) is arranged in the V-shaped groove. The seated and hung dual-purpose air conditioner is capable of solving the problems of larger overall size and larger occupied installation space of an air conditioner in the prior art.

The invention discloses an evaporative cooling air conditioner system suitable for a hot pot table. The evaporative cooling air conditioner system comprises a tabletop and a table leg connected with the tabletop. A heating device is distributed on the tabletop. A heat collecting device is arranged in the heating device. A power unit, an active carbon adsorption filter section, a water fender and an evaporative cooling unit are sequentially arranged in the table leg from top to bottom. The evaporative cooling unit is connected with the power unit through a pipeline. The heat collecting device is further connected with a heat dissipation device through a wire. According to the air conditioner system, the evaporative cooling technology is adopted, through a hydrodynamic fan which plays a main role and an electric fan and a circulating water pump which play an auxiliary role, kinetic energy generated by flowing of circulating water is converted into mechanical energy so that required power can be provided, the air supply amount is guaranteed, and energy saving, environmental friendliness, safety and reliability are achieved; smoke and the smell of hot pot in the air are removed through the active carbon adsorption filter section, and air is further purified and refreshed; and the heat dissipation device is additionally arranged in the position of the heating device, the supplied air is heated, energy sources are sufficiently utilized, and the evaporative cooling air conditioner system has great practical value.

The invention provides a range hood provided with a multi-layer purifying and adsorbing device. The range hood comprises a dynamic centrifugal adsorbing device, an air channel condensing and adsorbing device and an electrostatic adsorbing device which are sequentially arranged from a cooking fume suction direction to a cooking fume exhaust direction; the dynamic centrifugal adsorbing device comprises a rotatable centrifugal mesh disc; the electrostatic adsorbing device can form a high-voltage electric field for adsorbing cooking fume particles; and the air channel condensing and adsorbing device is used for conveying cooking fume and condensing and adsorbing the cooking fume in a conveying process. According to the range hood provided by the invention, at least three layers of adsorbing devices are arranged for adsorbing and purifying the cooking fume particles, therefore the indexes such as air volume of the range hood reach the standards, the PM2.5 emission index is also reduced more effectively, and the overall environment of a kitchen and air is improved.

The invention discloses a wall-hung air conditioner indoor unit and an air conditioning system. The wall-hung air conditioner indoor unit comprises a panel; an intake port is formed in the frontal surface of the panel; and an exhaust port is formed in the side surface of the panel. The wall-hung air conditioner indoor unit is provided with the intake port in the frontal surface of the panel; as the area of the frontal surface of the panel is larger than the area of the upper side of the side surface of the panel, the intake port can be effectively increased, the intake quantity can be increased, and the heat exchange effect can be improved; and as the intake port is formed in the frontal surface of the panel, the surrounding space of the intake port can be increased, the stop effect suffered by air in a flue is lower, the energy loss is reduced, the air quantity and the air speed are convenient to guarantee, and the heat exchange effect is correspondingly improved.

The invention relates to a novel IDC (internet data center) cabinet. The IDC cabinet adopts the structure that an air supply outlet is formed at the bottom of the cabinet body; a regulation cover is arranged at the air supply outlet; an upright column is provided with a panel; an air outlet is formed at the top of the cabinet body; side plates are arranged on the side faces of the cabinet body; a front door is rotatably connected with the cabinet body; and sealing plates are arranged on the two sides of the front part in the cabinet body. The novel IDC cabinet overcomes the defects that a conventional server cabinet is refrigerated by an air-conditioning system of a building, so that the refrigeration effect is restricted by the distance and space and the air output at the tail end of a machine set cannot be ensured easily; and moreover, due to the long-time running and poor heat dissipation of the tail end of the machine set, the probability of failure is very high so as to affect the normal running of the machine set. According to the novel IDC cabinet, the size of the air supply outlet can be adjusted, and cooling air is sealed in the cabinet to enable the equipment run in cooling air all the time, which not only meets the actual requirement of the cabinet but also ensures the air outlet of the cabinet at the tail end. Heat generated in the runtime is discharged timely from the rear door and top back part of the cabinet along with the inlet of the cooling air.

In order to solve a problem that when a blower is driven in a PWM manner, frequent switching on / off of a heavy-current driving signal may cause electromagnetic radiation so as to cause electromagnetic interference on electronic devices in an automobile, the invention provides an automobile air-conditioning system and a blower speed regulation controller thereof. The blower speed regulation controller comprises a processing unit and a spread spectrum driving unit. The processing unit is used for receiving a shift signal transmitted from an air conditioner controller, generating a shift control signal according to the shift signal in order to transmit the shift control signal to the spread spectrum driving unit, and transmitting a frequency control signal to the spread spectrum driving unit. The spread spectrum driving unit is used for generating a PWM driving signal according to the shift control signal and the frequency control signal and transmitting the PWM driving signal to a driving switch of the blower. The duty ratio of the PWM driving signal is controlled by a shift control signal and the frequency of the PWM driving signal is controlled by the frequency control signal and fluctuates near the center frequency in a pseudo random signal modulation manner.

The invention discloses an air conditioner detection method. The air conditioner detection method comprises the following steps of: acquiring the current air level of an air conditioner and running parameters of a first motor of the air conditioner after the air conditioner goes through a plurality of start and shutdown periods; acquiring the running parameters of a second motor, wherein the running parameters of the second motor are the motor running parameters when the air conditioner runs at the abovementioned air level in a preset quantity of periods in a plurality of start and shutdown periods; judging whether the difference value of the running parameters of the first motor and the running parameters of the second motor is larger than or equal to a preset threshold value or not; andif yes, judging that a filter screen of an indoor unit of the air conditioner is blocked by dirt. The invention also discloses an air conditioner detecting device, an air conditioner and a readable storage medium. The air conditioner detection method disclosed by the invention can be used for accurately detecting whether the filter screen of the indoor unit of the air conditioner is blocked by dirt, thus a user can conveniently clear or replace the filter screen in time, and the efficiency of the air conditioner can be improved.