32 results about "Air volume" patented technology

The invention relates to an air separation device and a method for domestic garbage. The device comprises a preprocessing unit and an air separation unit, wherein the preprocessing unit contains a feed belt, a magnetic separator and a crusher, and the air separation unit comprises a charging belt, a dedusting filter cartridge, a circulating fan 1, an air separation chamber, an air return pipeline, a roller 1, a roller 2, a circulating fan 2, a heavy substance storage bin, an intermediate-weight substance storage bin, a light substance storage bin and the like. In the invention, the separation of the domestic garbage is realized by the following method: the domestic garbage enters the magnetic separator and the crusher by the feed belt for preprocessing, then enters the air separation unit and enters the air separation chamber by the charging belt, the air speed and the air quantity in the air separation chamber are controlled, heavy substances, intermediate-weight substances and light substances in the domestic garbage respectively fall into the respective storage bins, and the return air is connected to the dedusting filter cartridge by a pipeline and is returned to the circulating fans after the return air is dedusted.

The invention discloses a freezing device. When the opening of the electronic expansion valve (14) is less than the specified opening, or the superheat of the evaporator (15) is greater than the specified superheat, it is judged that the refrigerant circulation is insufficient, and the evaporator fan ( 22) The air volume is reduced.

The invention relates to a central air conditioning charging method and charging device. The constant air volume temperature difference type central air conditioning charging method and charging device comprise the following steps: installing temperature sensors on the air inlet and the air outlet separately of every charging unit in the same central air conditioning system, at the same time testing gear state of every user's air conditioning fan by the fan state recognizing device, setting up different gear wind speeds of users' air conditioning fans to different corresponding predetermined values in advance, when the air conditioning fan is operated under a certain gear and the temperature difference of the air inlet and the air outlet reaches the initial value, fetching the predetermined value corresponding to the current gear speed of the air conditioning of user, calculating the computational energy which is consumed by the users' air conditioning fan of the charging unit according to the heat calculation formula under the constant air volume constant state, and sharing the air conditioning fees according to the proportion of the sum of computational energy of every gear of the air conditioning to the total computational energy of central air conditioning system. The measure temperatures are collected on the inlet and the outlet of air conditioning directly, which reflects the using effect better.

The invention discloses a control method and device for a range hood. The control method comprises the steps that work environment parameters of a first space where the range hood is located are collected; and according to the work environment parameters, an air volume control signal is generated and used for controlling the inlet air volumes of an air inlet of a condenser and an air inlet of an evaporator, wherein the condenser and the evaporator are arranged in a cold air system of the range hood. Through the control method and device for the range hood, the technical problem that an existing range hood cannot effectively lower the environment temperature is solved.

A DHD hammer that can exhaust working air volumes partially through a proximal end of the DHD hammer's actuator assembly includes a drive chamber, a return chamber, and a backhead that includes exhaust ports. Working air volumes from the drive chamber are exhausted through the backhead while working air volumes from the drive chamber are exhausted primarily through a drill bit.

The invention discloses a vehicle overpressure and negative pressure filtering and purifying comprehensive protection system, realizing the overpressure protection of carriage and negative pressure protection of carriage van-type vehicle, which comprises an overpressure protection device, a negative pressure protection device and a protection control device; the overpressure protection device is fixed in a compartment at left-front part of carriage, which comprises a fan, a filter absorber, a collecting tank, a cab blast pipe, a carriage blast pipe and an air volume adjusting valve; the negative pressure protection device is fixed on the floor of the carriage, which comprises a casing, a second high efficient filter, a high efficient filter, a centrifugal fan, an electric butterfly valve, an air exhausting flange, an ultraviolet lamp and a protective gate. The vehicle overpressure and negative pressure filtering and purifying comprehensive protection system has the advantages that the van-type vehicle can safely pass though biologic pollution area, and protect the environment on the way from pollution when biologic pollution sick and wounded or biologic pollutant are conveyed.

The invention relates to an oven heat dissipation structure which comprises a heat dissipation channel; one end of the heat dissipation channel is an air inlet port, and the other end of the heat dissipation channel is an air outlet port; a centrifugal fan assembly is arranged on the air inlet port; the centrifugal fan assembly comprises an air guide channel and a centrifugal fan; the air guide channel comprises a volute-shaped air guide cavity and an air inlet cavity; an impeller of the centrifugal fan is arranged in the air guide cavity; the air guide cavity is provided with an air inlet andan air outlet; the air outlet is in fluid communication with the air inlet port; the air inlet cavity communicates with the air guide cavity through the air inlet; and the air inlet cavity communicates with at least one air inlet channel. The oven heat dissipation structure has the characteristics of large air volume and low noise; and in addition, the air inlet amount of the air guide channel isincreased through the air inlet cavity, and cold air entering the air inlet cavity can be mixed in the air inlet cavity, so that interference of external airflow vortex on operation of the impeller can be reduced, operation noise of the impeller is reduced, and airflow can smoothly enter the air guide cavity and is guided into the heat dissipation channel under the action of centrifugal force ofthe impeller.

The invention relates to a device and craft for using fluidized bed to burn kerogen. The raw oil and kerogen are transmitted into the boiler combustion device through the transmission system. The device includes fluidized bed boiler, vortex separator, and ash particle combustion system and ash dredge reclaiming device. In the boiler, the hot wind enters with small aperture speed and hot fluidized speed through the directional cap, the wind is divided into the first wind and the secondary wind; the wind quantity can be adjusted, maintains the stability of the bed and homogeneity of temperature, the temperature is maintained between 850deg.C-920deg.C. The smoke is separated through the separator, the raw particle returns into the furnace to be burned, the residue tail gas reclaims heat through several heat exchangers, and the ash dredge in the furnace is discharged out of the dredge colder with high wind quantity and pressure through the electric dust eliminator, which can be used as cement mixing material. The combustion intensity and efficiency are high, the contamination is little.

The invention discloses an efficient filter replacement judging method and a fresh air unit. The judging method comprises the following steps of: testing the corresponding resistance of the efficientfilter under different air volumes through experiments in a final resistance state, and plotting an air volume-resistance curve LQ-P; acquiring the air volume passing through the efficient filter andlooking for a reference resistance Pr corresponding to the air volume through the air volume-resistance curve; detecting the real-time resistance P of the efficient filter, comparing the real-time resistance with the reference resistance Pr, and judging whether the efficient filter needs to be replaced according to the comparison result. According to the invention, by testing the real-time resistance of the efficient filter and comparing the reference resistance of the filter in the final resistance state, the method can accurately judge whether the filter reaches the service life and needs tobe replaced, and can eliminate the influence of other factors on the judgment and avoid the unreasonable utilization of the filter.

The invention discloses a butterfly door regulating device with a self-adaption regulating function. The butterfly door regulating device comprises a supporting frame, a left butterfly door, a right butterfly door and a wind collection barrel. Supports are arranged at the upper end and the lower end of the supporting frame correspondingly. A cushion plate is fixed to each support. The left butterfly door and the right butterfly door are symmetrically arranged between the cushion plates. The left butterfly door and the right butterfly door are connected through a spring and the supporting frame. The wind collection barrel fixed to the supporting frame is arranged on the outer circle of the left butterfly door and the outer circle of the right butterfly door. A nylon rope is arranged between the left butterfly door and the right butterfly door. One end of the nylon rope is fixed to the cushion plate at the upper end, and the other end of the nylon rope penetrates a through hole located in the lower end of the wind collection barrel, extends to the exterior of the wind collection barrel and is pressed through a rope pressing buckle. The butterfly door regulating device is simple in structure, low in production cost and convenient to maintain and clean in the later period; the butterfly doors which are symmetrically arranged are regulated through the nylon rope, and therefore the air volume can be controlled; the plug-in type design is adopted for the wind collection barrel, and cleaning and maintaining in the later period are facilitated.

The invention relates to a VAM suction device. The suction device comprises a VAM exhaust pipe, a delivery connecting pipe, a maintenance part, a filter part, an air exhaust fan, a VAM suction cover and a determination part, wherein the maintenance part is arranged on the delivery connecting pipe, the filter part is arranged in a pipeline arranged in the middle of the maintenance part, the air exhaust fan is arranged at the air outlet of the delivery connecting pipe, the VAM suction cover is arranged between the air outlet of a VAM air exhaust pipe and the delivery connecting pipe, the determination part is arranged on the delivery connecting pipe between the VAM suction cover and the maintenance part, the air outlet of the VAM suction cover is connected with the delivery connecting pipe in a sealing mode, a gap is reserved between the air inlet of the VAM suction cover and the VAM air exhaust pipe, and the suction air quantity of the VAM suction cover is 70% of the VAM exhaust quantity. The VAM suction device is applied to a VAM delivery system and has the advantages of being capable of adjusting VAM delivery and diffusion automatically, filtering dust and impurities in the VAM, and guaranteeing VAM delivery safety; and energy-saving, environment-friendly and reliable in use.

The invention discloses a wind collecting sheet of a three-dimensional flow fan. The three-dimensional flow fan comprises a series excited machine, a three-dimensional flow moving impeller and a three-dimensional flow fixed impeller, wherein the three-dimensional flow moving impeller is in transmission connection with the series excited machine; the three-dimensional flow fixed impeller is arranged between the series excited machine and the three-dimensional flow moving impeller; the wind collecting sheet comprises a cone tubular wind collecting part, a first connecting part and a second connecting part, wherein the first connecting part is connected with the outer side of the port of the large end of the wind collecting part, and the second connecting part is connected with the outer side of the port of the small end of the wind collecting part; the first connecting part is ultrasonically welded to the three-dimensional flow fixed impeller; the second connecting part is hermetically connected with the series excited machine. Two materials are welded for fixation by adopting an ultrasonic method, so that not only is the strength of a welded product greatly improved but also the phenomenon of air volume loss can be obviously improved. The invention also discloses the three-dimensional flow fan.

The invention discloses mine arch roadway air volume detection device and method, wherein the device comprises a plurality of air velocity transducers and a plurality of I/V conversion and amplification filter circuits, an A/D conversion circuit and a microprocessor module connected with the A/D conversion circuit, wherein the output terminals of the plurality of I/V conversion and amplification filter circuits are all connected with the input terminals of the A/D conversion circuit, the input terminal of the microprocessor module is connected with a key operation circuit, and the output terminal of the microprocessor module is connected with an alarm display circuit; the method comprises the following steps: 1. determination of position of a ventilation measuring point; 2. arrangement ofair velocity transducers; 3. determination of an air velocity error compensation characteristic equation; 4. storing of the air velocity error compensation characteristic equation to the microprocessor module; and 5. detection of mine arch roadway air volume. According to the invention, the design is novel and reasonable, the air velocity transducers can be mounted conveniently, data acquisition and transmission are steady and reliable, an accurate air volume detection result can be obtained, the practicability is strong, and the device is convenient for popularization and use.

The invention provides a control method of a fan wall. The control method comprises the following steps that S1, a main engine is controlled to collect the air pressure of an air opening of any fan through an air pressure sensor, the air pressure is compared with barometric pressure, and a first pressure difference delta P1 is equal to P<air opening>-P<barometric pressure>; S2, the main engine iscontrolled to obtain a second pressure difference delta P2 equal to (Q/(n*k)^2), wherein Q is the set fan air volume, n is the number of the fans of the fan wall, and k is the fan attribute coefficients; and S3, the main engine is controlled to adjust the air openings P by controlling the rotating speed of the fans, the rotating speed of all the fans is consistent, and the condition that delta P1-delta P2 is kept. According to the control method, the fans are controlled in a control manner of controlling the torque, all the fans stably operate together, and interference between the fans is reduced.

A kitchen air adjusting system comprises an air adjusting assembly and a cooking fume suction assembly. A compressor, a first heat exchanger and a second heat exchanger of the air adjusting assembly communicate through a refrigerant pipeline. The cooking fume suction assembly is provided with a smoke exhaust channel. The kitchen air adjusting system is characterized in that the air adjusting assembly comprises a shell, and an air inlet, a first air outlet and a second air outlet are formed in the shell; the first air outlet communicates with the interior of a kitchen, and the second air outletcommunicates with the smoke exhaust channel through an air outlet channel; and the first exchanger is mounted in the shell and located in an air channel between the air inlet and the first air outlet, a first heat exchange unit is mounted in an air outlet channel, and a second heat exchange unit is mounted in the smoke exhaust channel. The kitchen air adjusting system has the advantages that theair amount of the first heat exchange unit and the air amount of the second heat exchange unit are form an air conditioner indoor unit and an extractor hood correspondingly, the first heat exchange unit and the second heat exchange unit can be independent and can also be combined into a heat exchanger, use is flexible, and the heat exchange effect is good.

The invention discloses an exhaust hood having an interaction effect and keeping blowing-suction balance arranged aside an airflow tank, and belongs to the technical field of environmental protection.The exhaust hood comprises air feeding and air exhaust devices which are symmetrically arranged on the two sides of an industrial tank; one group of air feeding and air exhaust device is arranged oneach side of the industrial tank; the air feeding devices are arranged above an air suction device; the blowing-suction airflow directions are kept to be horizontal and are parallel to the ground; airwhich is fed out by the two-sided air feeding devices is respectively interacted with each other in the industrial tank; and the liquid level of the industrial tank is enclosed, so that waste gas produced in the industrial tank is exhausted through the two-sided air exhaust devices. According to the exhaust hood disclosed by the invention, by adopting low-power air feeding and an air exhaust machine, the requirement on the needed air volume can be met, the air which is fed out of the two sides of the air feeding devices are interacted with each other in the industrial tank, and the liquid level of the industrial tank is blocked so that the waste gas is not exhausted outwards; and therefore, the exhaust hood is applied to industrial pickling tanks, electroplating tanks and the like, and has the advantages of wide application, energy conservation, easiness for realization, and low cost.

The invention relates to the field of catalyst preparation, and discloses a carrier, a preparation method thereof, a Fischer-Tropsch synthesis catalyst, and a Fischer-Tropsch synthesis method. The carrier preparation method comprises a step of processing a carrier precursor in a water steam containing atmosphere by water steam to obtain the carrier; wherein the water steam containing atmosphere comprises water steam and air, the content of water steam is 50 to 90 vol.%; and the conditions of water steam processing are: temperature 400-700 DEG C, time 1 to 10 hours, and air volume space velocity 200-3000<-1>. The carrier preparation method has the advantages of simple steps and mild conditions, the prepared carrier has good physical and chemical parameters; and when the catalyst prepared from the carrier is applied to Fischer-Tropsch synthesis, the catalyst has excellent properties, high activity, high selectivity and high stability.

The invention discloses a smoke leakage prevention structure for a physiotherapy instrument and a working method thereof, and relates to the technical field of physiotherapy instruments. The smoke leakage prevention structure comprises a physiotherapy instrument assembly, the physiotherapy instrument assembly comprises a machine body internally provided with a combustion bin, the machine body is internally provided with a combustion bin shell, the combustion bin shell is internally provided with a temperature sensor, the machine body is internally provided with a control bin shell, and the surface of the machine body is provided with air outlet holes; and a filter is arranged in the combustion bin, and a filtering material is arranged in the filter. By arranging the physiotherapy instrument assembly, the air volume is controlled by controlling the rotating speed of a fan, the burning speed and the temperature of a physiotherapy object body in the machine body are controlled, smoke in the machine body always flows in the forward direction and is filtered through the filter, and meanwhile, the temperature in the machine body is dynamically adjusted to reach the set temperature; and meanwhile, the smoke, smell and the like are still filtered through the filter, so that the smoke leakage prevention structure is more environment-friendly to use.

The invention provides an air conditioner, which is provided with a plurality of ribs (322) around the suction port (321) of the blower (3), and the filter (2) or rectifying grid is butted and held on the ribs (322), wherein , the ribs (322) are oriented in such a way that the air passing through the filter (2) or the rectifying grid is guided to the suction inlet (321). In this way, the air flow (B) on the outer peripheral side of the air flow that enters toward the suction port (321) while rotating collides with the rib (322), and is guided by the rib (322) toward the suction port (321). Guided by the wind, the air staying between the ribs (322) flows. Therefore, since the parts where the air does not flow are also used as air passages, the air volume is increased.

The invention discloses an air purifier capable of reducing power consumption and noise, and belongs to the technical field of air purifiers. The air purifier capable of reducing power consumption and noise comprises a machine shell, wherein a rotating shaft is rotationally connected into the machine shell, blades are rotationally connected to the rotating shaft, a mounting frame is fixedly connected to the bottom of the machine shell, a filter screen is fixedly connected to the mounting frame, an air volume adjusting mechanism and a lubricating mechanism are arranged on the rotating shaft, and a dredging mechanism is arranged on the mounting frame. The air volume adjusting mechanism is arranged to increase the rotating speed of the blades and an angle table of the blades to increase the air volume when much dust exists outside, the output power of the motor does not need to be changed, energy is saved, lubricating oil is injected in time when the rotating speed of the rotating shaft is increased by arranging the lubricating mechanism, rotation of the rotating shaft is lubricated, rotation smoothness is improved, and noise generated by dry friction is avoided; and by arranging a dredging mechanism, when a large amount of external dust is attached to the filter screen to affect the air inlet amount, the filter screen is brushed through the brush block, and the problem that the air inlet amount is small is solved.

The invention discloses a two-way air intake centrifugal wind wheel. The other end of each blade of the two-way air intake centrifugal wind wheel is fixed on the edge of an impeller core disc, extends out of the edge of the impeller core disc in a radial direction and is exposed outside the edge of the impeller core disc, i.e. the diameter of a circle in which the outer edge of the air outlet side of the blade is located is lager than that of a circle in which the edge of the impeller core disc is located, so that a gap is formed between the other end of the impeller and the impeller core disc, and air can enter into the centrifugal wind wheel by the gap. Compared with the traditional single-way air intake centrifugal wind wheel, the centrifugal wind wheel of the invention is added with a reversed air inlet so as to achieve two-way air intake, thereby improving air quantity parameters on an equal footing. The invention has simple structure and is easy to implement.

The invention relates to a partitioned working isolation sealing device of an impeller, which comprises a partitioned isolation plate fixedly arranged in an inlet cavity of an impeller, wherein the partitioned isolation plate is closed in the circumferential direction, and an inner hole of the partitioned isolation plate is concentric with an impeller shaft. According to the invention, the technical prejudice that the wind speed and the wind quantity are influenced by increasing the number of baffles is overcome, and all the isolation areas of the impeller is uniform in work and consistent inpressure by arranging partitions; the vortex and turbulent flow phenomenon in the inlet cavity of the impeller is avoided, so that the flow resistance is reduced, and the flow and pressure of fluids such as a fan and a water pump are improved, and the surge of the fan and the cavitation phenomenon of the water pump are improved.

The invention relates to a centrifugal fan with a volute. The centrifugal fan comprises the volute, a volute type line comprises a first spiral line CD1, a second spiral line E1M and a Bezier curve D1E1, the Bezier curve D1E1 is disposed between the first spiral line CD1 and the second spiral line E1M, the first spiral line CD1 is an equiangular spiral line with a constant expansion angle, the second spiral line E1M is a variable-angle spiral line tapering at the expansion angle, and a point D1 and a point E1 of the curve D1E1 are respectively located on the upper side and the lower side of ahorizontal line OH1 passing through a volute center O, the point H1 is a control point used for controlling the bending direction of the curve D1E1, and the control point H1 is located on the curve D1E1. On the one hand, the left and right sizes of the volute are reduced, the smoothness of airflow collection and passing inside the volute is improved, the static pressure of the maximum static pressure and the effective air volume section is improved, the large volute effect is achieved at a small size, and pneumatic noise is reduced; and on the other hand, the Bezier curve is adopted for transition, so that the type line connection is smoother, the separation loss caused by the curvature mutation is reduced, and the aerodynamic noise caused by vortex is reduced.