1701 results about "Air change" patented technology

The invention relates to a method and a system for adjusting air quality of high-rise buildings by virtue of natural conditions. The method comprises the steps of acquiring index data of air quality of a local area, detecting indoor and outdoor air quality, humidity and temperature as well as outdoor wind power, transmitting detection data to a main control system, working out an air quality control strategy by the main control system according to related data of various detections as well as the index data of the air quality of the local area, sending the air quality control strategy to a local controller by the main control system, and controlling a total heat fresh air ventilator to start and stop ventilating by the local controller. The system comprises various air quality detection devices, a ventilation and air change device, the local controller, a local area network and the main control system, wherein the main control system is connected with an air quality index publishing system. According to the system and the method, both the indoor air condition and the outdoor air condition of the high-rise buildings are taken into account, existing facilities of the high-rise buildings are fully used, relatively ideal air at the best time is gathered, and the air quality of the high-rise buildings is controlled and regulated at low cost when the air contamination is uncertain.

A combustor has a flow sleeve and a flow liner defining a generally axial flow direction of compressor discharge air toward combustor burners. A casing is secured to the forward end of the flow sleeve defining an annular plenum along the interior of the flow sleeve. Openings through the flow sleeve supply compressor discharge air into the plenum where the air changes direction for flow through apertures into and generally coaxially with the free air stream. The axial injection minimizes or eliminates energy losses due to cross flow injection within the axial air stream while continuing to cool the liner.

The invention discloses a method for evaluating indoor air quality and a system for monitoring and analyzing indoor air quality. The method comprises the following steps of: monitoring environmental data in an enclosed room; computing mean square deviations between carbon dioxide concentration values measured in real time within a preset period of time and carbon dioxide concentration values at the same moments computed with a formula 1 under the condition of the value of a ventilation rate Q selected within a preset range; determining the value of a ventilation rate Q' which corresponds to a minimum mean square deviation in the computed mean square deviations as a ventilation rate Q in the enclosed room; computing the intensities F of polluting sources which produce polluting components based on the determined ventilation rate Q and the concentrations of the polluting components contained in monitored pollutants; and analyzing the indoor environment based on the monitored environmental data and the computed intensities of the polluting sources. By adopting the method and the system, the concentrations of a plurality of polluting sources in the indoor environment can be monitored in real time, and the air quality can be evaluated and analyzed according to monitoring data.

The invention relates to a novel ventilation air-conditioning ecologic building which is suitable for various industrial and civil buildings. The novel ventilation air-conditioning ecologic building is characterized by comprising an ecologic ventilation air-conditioning circulation system, a ventilation air-conditioning heat and sound insulating wall, a solar energy heated air-conditioning wall, a ventilation air-conditioning floor, and the like. By utilizing solar energy and wind energy power generation to provide natural and clean power for ventilation, when the outdoor fresh air and an underground gas in a basement, i.e., ground-source heat which is warm in winter and cool in summer, are collected by the ecologic ventilating circulation system, the hot air or cold air generated by the solar energy heated air-conditioning wall and the ventilation air-conditioning floor is also delivered into a room. In addition, the residual heat in the indoor air is discharged outside after being effectively utilized by the ventilation heat and sound insulating wall which can effectively utilize the residual heat in the indoor air and an ecologic exhaust system, thereby achieving the effect of adjusting the indoor air and temperature. The invention has the advantages of commercial assembly type construction, simple and convenient construction, high working efficiency, short construction period, low cost, energy saving, environmental protection, and the like.

The invention relates to a double-wall pipeline for the connection of a fuel-gas valve set and an engine on an LNG ship, which comprises an internal pipe and an external pipe, wherein the internal pipe and the external pipe are coaxially sleeved and supported by a plurality of detachable clips, one end of the external pipe is fixed on the side wall of a fuel-gas valve set chamber provided with the fuel-gas valve set, one end of the internal pipe is communicated with the fuel-gas valve set by a transitional connection pipe, the other end of the internal pipe is communicated with the air inlet of a double fuel-gas engine by an internal corrugated pipe, the aperture of the internal pipe is the same as that of the air inlet of the engine, and a circular chamber is arranged between the internal pipe and the external pipe and communicated with the fuel-gas valve chamber to together realize air change. The double-wall pipe of the invention has simple and practical structure, uses common material of easy production and low cost, and can be rapidly and conveniently assembled and disassemble by using common tools when being applied on the LNG ship.

Moving domestic air conditioning belongs to refrigeration and air conditioning technical field, comprising compressor, evaporator water collecting panel, evaporator, throttle mechanism, shower head, condenser blower fan, condenser, water pump, condenser water collecting pane, water tank, roller, condenser air inlet, inlet port, thermal shield, evaporator air inlet, water eliminator, hose and shell. The invention combines the inner room machine and outer room machine to a whole structure, using shower water evaporation+air cooling system, so that the air conditioning can make refrigeration unless the water in the water tank is not high enough, and it can move in accordance with the need. It makes good use of the condensation water of original separate type air conditioning, solves the water dropping problem, realizes air change automatic, and its also has fairly good economical benefit and energy saving effect since the total cold amount created is used to cool the air in room.

The present invention relates to an energy-saving window or door with bidirectional heat-preserving air change and air purification functions. The energy-saving window or door can realize bidirectional heat-preserving air change when being closed, not only discharging the polluted indoor air but also bringing the purified outdoor air into the room, and moreover, in the process of air change, an air heat exchanger arranged in a window frame or a door frame can carry out the sufficient redemption of heat and humidity between the indoor air and the air brought in from the outside in order to ensure that the indoor temperature and humidity cannot be changed. In addition, if flu or SARS is rampant, the energy-saving window or door can be switched from the bidirectional air change mode to an indoor air circulation mode, the indoor air circulation mode utilizes titan apatite and luminous optic semiconductor catalyzer loaded in a photocatalytic sterilization unit arranged in a third air chute to actively and dynamically sterilize and purify the indoor air, the sterilization rate can reach 99.9 percent, and thereby, the health of the human body can be protected. Furthermore, the energy-saving window or door can use the power provided by a photovoltaic cell, thus realizing energy saving and emission reduction.

The invention relates to an air conditioner with independent humidity / temperature control and relates to the air conditioning technique. The air conditioner is characterized in that: the air temperature and humidity are independently controlled according to the user's requirement. With the popularization of various architecture energy-saving techniques, the proportion of heat load to moisture load is changed and the proportion of moisture load is increased relatively, and the importance of moisture load control is more outstanding. The independent humidity / temperature control technique can reduce cold control load of the air conditioner, improve comfort and precision of the air conditioner and remarkably reduce energy consumption. The air conditioner comprises an indoor unit and an outdoor unit. The indoor unit comprises a fan (1), an air-cooled heat exchanger (2), an air-air return heat exchanger (3), a cooling medium (4) and a humidity / temperature control mechanism (5). The indoor unit can be independently used in a central air-conditioning system. The air conditioner meets the national requirement for controlling temperature at 26 DEG C in summer, and is conducive to update of the air conditioning technique.

The invention tries to knock through the interior of a closed building into a communicated whole body to perform air management for the first time, and provides a means to treat air and water directly by means of geothermal constant-temperature energy and maintain the temperature of the air and wall bodies indoor in two ways for the first time. On the basis of taking the means as a main mode of auxiliary refrigerating and heating, various problems of temperature control, air quality and ventilation in a closed house are effectively solved by combining wind power and solar energy for supplementing power for a system, taking good heat insulating performance of the house as a platform and taking high-efficiency sunshine collection as the means for raising the room temperature.

The invention provides a method and a device for controlling air conditioners. The method comprises the following steps of: S1. judging whether a shortcut key is pressed and entering next step if yes or operating according to the settings of users otherwise; S2. setting an operation mode and temperature according to outdoor temperature; S3. judging whether operation time reaches first preset time and entering a S4 if yes or entering a step S31 otherwise; S31. continuing operating and repeatedly executing the step S3; S4. resetting the operation temperature according to the outdoor temperature and starting an air changing function; S5. judging whether second preset time is reached after resetting and entering a step S6 if yes or entering a step S51 otherwise; S51. continuing operating and repeatedly executing the step S5; and S6. resetting the operation mode and temperature according to the outdoor temperature and repeatedly executing the previous step S5. The device is convenient to operate and control, can automatically regulate the air conditioners to have the optimum temperature and operation mode with no manual control, and is especially applicable to the elderly.

A ventilation fan includes a body unit, which has a fan disposed in a body case and a fan controller operable to control an air volume of the fan. The ventilation fan also includes a sensor module having an indoor environment detecting sensor and a module controller operable to control a detecting operation of the indoor environment detecting sensor. The body unit has a module mount on which the sensor module is mounted and another sensor module can be mounted in place of the sensor module. The module mount is connected to the fan controller. The module controller outputs detection information obtained based on a detection result of the indoor environment detecting sensor to the fan controller, which in turn controls the air volume of the fan based on the detection information inputted thereto.

The invention provides a bio-drying-based domestic refuse treatment method. The method comprises the following steps: (1), pre-treatment: feeding domestic refuses into a negative-pressure receiving room to break bags and manually select; performing innocent treatment on selected harmful refuses which have potential pollution threats to the soil and the underground water, and crushing selected large-size refuses in a large-size refuse crusher, wherein the crushed large-size refuses are treated in a step (3), residual domestic refuses are treated in a step (2), and the air change rate of the negative-pressure receiving room is five to seven times per hour; (2), bio-drying: feeding the residual domestic refuses treated in the step (1) into a bio-drying storehouse, stacking to form a refuse dump body, and covering the refuse dump body with a selective semi-permeable membrane; (3), post-treatment: sequentially performing mechanical crushing, drum screen screening, magnetic separation, near-infrared separation and air separation on the dried products obtained in the step (2) and large-sized refuses crushed in the step (1); (4), tail end treatment: respectively recovering and utilizing according to property difference of products selected according to the step (3).

A waterproof ventilation structure according to the present invention includes: a housing having an interior space and an opening communicating the interior space with an exterior space; and a waterproof air-permeable membrane covering the opening. The waterproof air-permeable membrane is a layered product including a first stretched porous polytetrafluoroethylene (PTFE) membrane containing a filler and a second stretched porous PTFE membrane not containing a filler. The waterproof air-permeable membrane is disposed so that the second stretched porous PTFE membrane is located closer to the interior space than the first stretched porous PTFE membrane. The present invention provides a waterproof ventilation structure configured such that a filler is less likely to fall in a housing.

The invention relates to a culture method of meat rabbits. The culture method comprises the following steps: (1) making a rabbit hutch: enabling the ground height in the rabbit hutch to be 20-30cm from the ground outside the rabbit hutch, dividing the rabbit hutch into small rooms with the length being 70-80cm and the width being 60-70cm, and arranging feces supporting plates in the small rooms, wherein a door of the rabbit hutch is woody; (2) performing daily management: maintaining the temperature in the rabbit hutch to be 10-30 DEG C; simultaneously, paying attention to ventilation and air change in the hutch so as to reduce the stimulation of ammonia gas generated by feces on the rabbits; feeding each rabbit one piece of oxytetracycline once in every 2-3 months to prevent occurrence of cold and pneumonia, wherein feedstuff comprises concentrated food and forages, the feeding at high-temperature period is avoided, the preferred feeding is twice per day, i.e., in the morning and the evening, drinking water is supplied sufficiently, and a little amount of salt iodine tincture is added into the drinking water. The culture method is simple, the requirement for equipment is low, the illness rate is obviously reduced, the meat quality of the rabbits is good, and the taste is good, so that the culture method is especially suitable for large-scale culture in rural areas, especially the areas with hard conditions.

The present invention provides a heat exchanger unit (5) that can appropriately inhibit freezing of a heat exchange element (11), even in cold-climate regions. The heat exchanger unit (5) performs heat exchange and ventilation between an indoor space (SI) and an outdoor space (SO), and is therefore provided with a heat exchange element (11), a supply air passage that is routed via the heat exchange element (11), an exhaust air passage that is routed via the heat exchange element (11), a temperature sensor (51), and a control unit. The temperature sensor (51) detects the outside air temperature. The control unit executes a first freeze inhibit control mode and a second freeze inhibit control mode. The first freeze inhibit control mode inhibits freezing of the heat exchange element (11) if the outside air temperature falls below a first level. The second freeze inhibit control mode, which inhibits freezing more strongly than the first freeze inhibit control mode, inhibits freezing of the heat exchange element (11) if the outside air temperature falls below a second level (which is lower than the first level).

The invention discloses an air guide mechanism and an air conditioner indoor unit. The air conditioner indoor unit comprises the air guide mechanism and a heat exchanger and a fan which are assembled in the air guide mechanism. The air guide mechanism comprises a casing, an air outlet frame, an air guide piece and a circumferential driving structure. An air channel and an air outlet communicated with the air channel are formed in the casing, the air outlet frame is assembled in the air channel of the casing and located at the position of the air outlet, and the air guide piece is connected with the air outlet frame through the circumferential driving structure in a rotating mode. The circumferential driving structure comprises a locating structure arranged between the air guide piece and the air outlet frame and a driving structure driving the air guide piece to rotate. The whole set of air guide device has less composition parts, and greatly simplifies structure design. On one hand, the air guide piece is stable in movement and small in noise; on the other hand, the air guide piece is small in air resistance, air quantity loss is small, the air supply angle is large, and the distance is longer.

The invention discloses a vehicular ventilation control system. The vehicular ventilation control system comprises a parameter collecting module, a ventilation control module and a ventilation execution module. The parameter collecting module is used for collecting environment parameters of vehicles, and the environment parameters at least include the parameter of vehicle inside and outside environment information including vehicle inside and outside temperature information. The ventilation control module is used for judging whether collected data meet a preset ventilation condition or not, if yes, an instruction making the ventilation execution module in an execution mode is generated, and if not, an instruction making the ventilation execution module in a stopped state is generated. The ventilation execution module is used for responding the instructions sent out by the ventilation control module. The vehicular ventilation control system can automatically recognize vehicle inside and outside environment parameters and automatically control ventilation and air change in the vehicles according to preset ventilation conditions so that the environment parameters in the vehicles can be maintained within a preset range.

The invention provides an air conditioner, which adjusts strength and wind direction of hot air and cold air toward a residential area, provides comfortable cold and warm environment for every one, and realizes whole circulation of hot air and cold air in a living room with high efficiency and excellent energy-saving performance. The air conditioner is provided with three upper-lower air direction changing blades making upper-lower air direction changeable, wherein the first and the second upper-lower air changing blades are configured in a mode that the end parts are roughly close to each other between upper end and lower end of an air outlet, and the third upper-lower air changing blade is configured in a mode that an end part is made to be roughly close to the lower end of the air outlet.

The invention provides an indoor environment intelligent adjustment system, and relates to the fields of cloud computing, air conditioners, humidifiers and ventilation devices. The indoor environment intelligent adjustment system comprises an air conditioner, a humidifier, a ventilation device and an environment information collecting device. All the devices are arranged at places where network signals can be received and all are connected with a cloud server. Environment information in each room can be collected in real time and uploaded and stored in the cloud server, and the cloud server analyzes whether data meet standards so as to send orders to all environment adjusting devices.

The invention relates to an internal combustion steam engine that is based on the internal combustion thermodynamic generator. The variable radiators are taken out from the traditional engine, while the warm keep cover, and heat absorbing water spray system formed by water tank, low pressure water pump, water cooling heat exchanger, high pressure pump, high water sprayer, are installed on the outside of traditional engine and connected through the water delivery pipe according to the above order, thereof, the high pressure water sprayer if installed on the high temperature part of the firebox; besides, by reforming the fuel atomization and spraying device onto the air-changing channel to make engine save energy and the more environment-protective.

Ventilating device (1) comprising a casing (6) intended to channel at least one air flow (3) created by a blower wheel (5), the said casing (6) delimites a main air channel (7) in which a main air flow (3a) circulates and a secondary air channel (8) intended to bring towards a motor (4) a secondary air flow (3b) in order to cool the motor (4), the said secondary air channel (8) comprising a inlet (11) arranged in a main channel wall (7c) and a outlet arranged in a plan containing a casing end by which the wheel (5) is introduced, the said secondary channel (8) further comprising a means intended to change at least twice the direction of the secondary air flow (3b) when the secondary air flow (3b) passes through the secondary air channel (8).

The invention provides a novel elevator. The novel elevator comprises a pressure sensor, an oxygen concentration sensor, a smoke sensor, an input device, an identification device, a loudspeaker, a camera, an air changing device, an ultraviolet germicidal lamp and a microprocessor. According to the novel elevator, the microprocessor is utilized for integrating and analyzing signals of all the sensors and making corresponding instructions at the same time, and thus intelligent control can be achieved; the input device can be used for emergency call for help and also can be simply operated by working personnel at the same time to change the instructions; when the pressure sensor detects that the pressure value in the elevator is the initial value, that is, no person uses the elevator, the ultraviolet germicidal lamp is controlled to work at this moment to disinfect the elevator; when a gravity sensor detects that the elevator gravity is abnormal, a locking device is controlled to conduct safety treatment on the elevator; and the novel elevator is simple in structure, capable of achieving intelligentization and enhancing the customer experience feeling, safer and very high in practicability.

The invention aims to overcome the defects of existing equipment control logic, and provides an intelligent fresh air and air conditioning linkage control management method. Fresh air and air conditioning selective intelligent management is realized by making full use of fresh air system and air conditioning linkage management logic, outdoor low-temperature air is maximally delivered into a machine room by indoor and outdoor temperature difference comparison and logic control, indoor hot air is exhausted out of the machine room by an exhaust system, the temperature of an indoor working environment is reduced by high heat ventilation effects, and a normal working environment is effectively provided for indoor devices on the premise of maximally saving energy. By the aid of the control logic, the energy-saving rate of the machine room is increased from 30% to 60%, more than half of energy can be annually saved for the machine room when each device is used in an online manner, long-time operation of an air conditioner is effectively reduced, and the operating life of the air conditioner is prolonged.

The invention discloses an air supply device of an air conditioner. The air supply device comprises at least two annular air guide assemblies. The middles of the annular air guide assemblies are communicated with one another, a front opening and a rear opening are respectively formed in each annular air guide assembly, each annular air guide assembly is an individual assembly, the rear opening of each annular air guide assembly is used as an air inlet, the front opening of each annular air guide assembly is used as an air outlet, the annular air guide assemblies are sequentially arrayed in the front-back direction, front-back through air channels are formed in the middles of the annular air guide assemblies, an annular heat-exchange air channel is formed between each two adjacent annular air guide assemblies, and the radial section of each annular air guide assembly is a curved surface. The air supply device of the air conditioner has the advantages that the air supply device is applied to the air conditioner, accordingly, heat-exchange air can be guided to smoothly flow, the flowing speed of initial air flow can be increased, non-heat-exchange air which is used as secondary air flow can be conveniently acquired and flows into the through air channels, and the quantity of outlet air is increased while the temperature of the outlet air is proper.

The invention discloses a design method of a flexible air distribution cam curve. The cam curve is represented by a driven member displacement curve. The design method comprises the steps that according to relation among lengths of various acceleration sections, time-area values and positive and negative acceleration peaks in a trapezoidal acceleration curve of a driven member matched with a cam, and requirements of a designed engine air distribution mechanism on the acceleration peaks, the time-area values and jerk values of the driven member, lengths of the various acceleration sections are determined; an ideal trapezoidal acceleration curve is obtained; a driven member displacement curve is obtained by integration; a plurality of points are taken from the displacement curve to serve as a data point set; and the final driven member displacement curve, namely the cam curve, is obtained by fitting a quintic B splined curve. The cam curve obtained by the design method has the characteristics of high time-area value, low positive and negative acceleration peaks and higher-order continuation; requirements of an air distribution cam mechanism on the air change performance and the dynamic performance can be met better; and the cam curve is the flexible air distribution cam curve, and has the characteristics that the B splined curve is high in adaptability, and facilitates local modification.

The invention provides an underground ventilated premixing chicken house which comprises a gable wall, side walls, a roof and a floor. An inner room is further arranged in the middle of the chicken house, partition plates are arranged in the side walls and inner walls in a sealed mode, and an air inlet plate is arranged between the two inner walls. A plurality of fans and a plurality of air inlet windows are uniformly arranged on the inner top. A plurality of wet curtains and exhausting ports are formed in the side walls, and air outlet grooves are uniformly formed in the inner walls. An underground exhausting bin is arranged below the floor, an exhausting pipe and a fan are arranged on one side of the underground exhausting bin, and an air outlet is formed in the upper end of the exhausting pipe. The underground ventilated premixing chicken house has the advantages that fresh air about to enter the chicken house and air in the upper layer of the chicken house are premixed, the premixed air is uniformly discharged into the inner room through a pressure bin, vitiated air settling to the lower portion of the chicken house is smoothly discharged out through the underground exhausting bin and / or exhausting ports formed in the side walls, the vitiated air settling to the lower portion of the chicken house can be well discharged out, and overall air change in the chicken house is uniform.

The invention provides a resource utilization process for clean hemp biological degumming and waste thereof. The process comprises: adopting a wax-like bacillus WM20091116 strain as a degumming strain; pre-wetting a hemp billet; performing field planting on degumming bacteria; performing heat insulation, moisture preservation, air change, nutrient solution replenishment, pH adjustment, differential temperature incubation and mechanical kneading; and rinsing the obtained product with clear water to obtain high-quality hemp fiber. Rinsing liquid is filtered through inorganic ceramic membrane, and filter residue solids, sawdust and rice husk are mixed, stacked and then used as a flower soilless culture matrix. Filtrate which is heated, concentrated, treated with ethanol, precipitated, subjected to pressure filtration and then dried can be used as coagulant in culture media. The filtrate combined with supernatant poured out can be prepared into wettable powder serving as biological pesticide. The process has the advantages of low energy consumption, no off-flavor during the treatment of hemp and high resource utilization degree, and the hemp fiber produced is high in long fiber content, high in fiber strength, low in loss and capable of meeting combing-spinning requirements well.

A refrigeration based air handling system design process for significant energy and cost savings in cleanroom and other applications requiring large air change rates is presented. The process utilizes a by pass around the air conditioning system, the ratio of bypass to air conditioning flow being such that minimal or no reheat of the air is required for applications having relative humidity (RH) control requirements and with RH control being achieved via cooling. If dehumidification is achieved by adsorptive processes, then the by pass ratio is varied so as to minimize cooling of the heated dry air. In other non relative humidity control applications the bypass is varied to minimize the air conditioning flow, thereby decreasing cost, but by using optimum cooling coil velocities in a manner such that system energy for airflow is minimized. The energy and cost savings achieved by this process vary between 65% to 15% depending on the Class of the cleanroom and / or on the number of air changes per hour required.

A ventilation and air conditioning apparatus for a vehicle includes: a ventilator that sucks air from outside the vehicle; an air conditioner that conditions air inside the vehicle; a duct for fresh outside air that connects the ventilator with the air conditioner so as to supply the air that the ventilator has sucked from outside the vehicle to the air conditioner; and a duct for conditioned air that supplies the conditioned air blown out from the air conditioner to inside the vehicle. The duct for fresh outside air is branched so as to be connected to the duct for conditioned air. With this configuration, even if the operation of the air conditioner is stopped due to, e.g., a leakage of a flammable refrigerant, an amount of ventilation can be secured in the vehicle.

The invention relates to the technical field of fresh air, in particular to a fresh air system. The fresh air system aims to solve the problems of influence of an existing fresh air system on the indoor temperature and humidity adjustment. The fresh air system comprises an air humidity adjusting device and a heat exchanger, wherein the air humidity adjusting device selectively communicates with afirst air duct, a second air duct, a third air duct and a fourth air duct so as to switch the operation mode of the fresh air system, and the heat exchanger stretches across the second air duct and the third air duct and is used for driving a working medium in the heat exchanger to circularly flow in the two air ducts by utilizing temperature difference of air flow in the two air ducts. The indoorand outdoor temperature difference is large in summer, the portion, which is located in the second air duct, of the heat exchanger serves as an evaporation end, the portion, which is located in the third air duct, of the heat exchanger serves as a condensation end, the working medium in the evaporation end flows to the condensation end after absorbing heat and evaporating, heat release and condensation are carried out at the condensation end, in the process, outdoor high-temperature air enters an indoor space from an indoor air supply port after being cooled, so that a precooling effect on the outdoor air is achieved, and the purpose that the fresh air system only exchanges air but does not exchange heat is achieved.