244results about How to "Achieve ventilation effect" patented technology

The present invention discloses a seat adjusting method and a seat adjusting system capable of actively adjusting a user's sitting posture and comfort according to the body weight of different users. Stress sensors are provided for detecting a stress distribution situation of a seat support surface. Airbags are buried into the support surface for actively changing the level of the support surface in order to increase a contact area between the support surface and the user, and the stress distribution situation can be matched with an expected ratio to provide the best ergonomic support effect to users.

The invention discloses a solar energy storage, ventilation and heating system, which comprises a heat storage wall composed of a heat-insulation layer, a heat storage layer and an aluminum plate painted with black paint, a heat storage ventilation channel or a combination thereof, which are sequentially arranged on the outer side of the external wall of a building; a transparent cover plate arranged on the outer side of the heat storage wall or the heat storage ventilation channel; an air sandwich between the transparent cover plate and the heat storage wall; and an upper vent and a lower vent having valves and arranged on the transparent cover plate and the heat storage wall. The solar energy storage, ventilation and heating system can achieve intermittent ventilation and heating without consuming non-renewable energy by using the special heat absorption and release functions of a phase-change heat storage material and by controlling the valves of the vents. The system has the advantages of energy conservation, environmental protection, simple control and handsome structure, and can be widely used for common residential buildings and public buildings.

The invention discloses a heat storage, heat-release, dehumidification, ventilation and sterilization type solar greenhouse regulating and controlling system, and belongs to the technical field of agricultural facilities. The system has four functions of heat storage and release, dehumidification, ventilation and sterilization. After a water pump is used for making water in a water tank to absorb heat reflected from a light condensation plate to a heat collecting pipe, the heat is transferred to water in the water tank and a coil pipe, and heat storage is achieved; when the temperature in a greenhouse is low, the water pump is used for making heat of the water in the water tank released to the greenhouse through a water pipe and a radiator to improve the temperature in the greenhouse, and heat release is achieved; a compressor is used for refrigeration, and wet air in the greenhouse is dehumidified through a fan and an evaporator, heated in a condenser, then heated to the required temperature through an electrical heater and finally sent into the greenhouse through an air pipe, and therefore dehumidification is achieved; ventilation is achieved though vent holes inside and outside the greenhouse under the action of a fan and an adjusting air valve; sterilization is achieved through ultraviolet sterilizing lamps during dehumidification or ventilation. The system can improve the utilization rate of solar energy and enhance the regulating and controlling ability of the thermal and humidity environment of the greenhouse.

A lower ventilation structure for the cage of elevator has a wall plate, the reinforcing ribs on the back of wall plate, a base board at the low end of wall plate and the ventilating seam between wall plate and base board.

The invention belongs to the technical field of natural resource using and discloses a passive heat collecting, sunshading and ventilation integrated window which is characterized in that on the basis of natural ventilation, the naturally-adjustingheating cooling technologies such as passive solar energy converting, air cycling heat collecting and dissipation and sunshading are used for achieving all-year-round indoor environment comfort. Multifunctional modules are divided into a heat collecting module, a sunshading module and a ventilation module. The window mainly comprises an inner glass layer, an outer glass layer, a solar photoelectric plate, a double-color sunshading louver, an outdoor ventilator, an indoor ventilator, a ventilator outer layer fixing louver, a ventilator inner layer movable adjusting louver and the like. The window has the advantages that during indoor environment adjusting, different module systems are matched for use so that a building can be adjusted naturally, and solar energy, wind energy and other natural energy are collected, converted and stored. Passive solar energy is widely used in buildings, and great significance in the technical field of building integrating is achieved.

The invention discloses a solar energy storage, ventilation and heating system, which comprises a heat storage wall composed of a heat-insulation layer, a heat storage layer and an aluminum plate painted with black paint, a heat storage ventilation channel or a combination thereof, which are sequentially arranged on the outer side of the external wall of a building; a transparent cover plate arranged on the outer side of the heat storage wall or the heat storage ventilation channel; an air sandwich between the transparent cover plate and the heat storage wall; and an upper vent and a lower vent having valves and arranged on the transparent cover plate and the heat storage wall. The solar energy storage, ventilation and heating system can achieve intermittent ventilation and heating without consuming non-renewable energy by using the special heat absorption and release functions of a phase-change heat storage material and by controlling the valves of the vents. The system has the advantages of energy conservation, environmental protection, simple control and handsome structure, and can be widely used for common residential buildings and public buildings.

The invention discloses an electric heating-extraction / ventilation integrated device for contaminated site in-situ heat desorption. The electric heating-extraction / ventilation integrated device for contaminated site in-situ heat desorption comprises an electric heating pipe, an extraction well pipe, an extraction control valve, a ventilating control valve and an air extracting pump, the electric heating pipe is sleeved with the extraction well pipe, an extraction pipe port and a ventilating pipe port are formed in the extraction well pipe, the extraction control valve is arranged at the extraction pipe port, the ventilating control valve is arranged at the ventilating pipe port, and the air extracting pump is connected with the extraction pipe port. According to the electric heating-extraction / ventilation integrated device, the problems that an existing contaminated site in-situ electric heating heat desorption restoration technology is high in energy consumption, heating and extraction / ventilation cannot be achieved on the same device, and the heat utilization rate is low are solved. The device gives the advantages of the electric heating technology into full play and also facilitates engineering operation and using. By adoption of the electric heating-extraction / ventilation integrated device, according to the treatment conditions of each stage of a site, three on-site functional layouts can be conveniently and rapidly adjusted, the problem of the airflow dead zone of a traditional restoration zone is solved, the airflow disturbance effect is improved, and an in-situ mode is kept, but the disposal effect of a strange-position mode is achieved.

The invention relates to a lifting type pipe cleaning robot which comprises a rack, a walking mechanism, a lifting mechanism and a top sweeping mechanism. The rack is provided with a bearing platform; the walking mechanism is arranged on the two sides of the rack, and is used for driving the rack to move forwards or backwards; the lifting mechanism is arranged on the bearing platform of the rack; the top sweeping mechanism is arranged on the lifting mechanism and can move up or down in the vertical direction under the driving of the lifting mechanism, and the top sweeping mechanism comprises a sweeping brush A and a first driving mechanism driving the sweeping brush A to move in the horizontal direction. The lifting type pipe cleaning robot has the advantages that the lifting type pipe cleaning robot can carry out automatic cleaning on ventilation pipelines, flue pipelines, pipelines of central air conditioners and the like, the problem that stubborn dust and dirt adhered to the walls of the pipelines cannot be cleaned completely all the time is solved, the lifting type pipe cleaning robot is convenient to use and high in cleaning efficiency, and an upper portion and a lower portion can be cleaned simultaneously. In addition, the lifting type pipe cleaning robot is suitable for pipelines of different diameters or sizes and quite strong in practicability.

The invention relates to a three-phase asynchronous motor for an explosion-proof fan, and relates to the technical filed of motors. The three-phase asynchronous motor comprises a motor body, a case sleeving the motor body, fan blades coaxially fixed to an output shaft of the motor body, and a dehumidification mechanism arranged on the motor body and used for dehumidification; and the dehumidification mechanism comprises a plurality of heating sheets arranged on the inner wall of the case and distributed around the circumferential side of the motor body at equal angles, a plurality of gas holesare formed in the motor body in the two axial ends of the motor body, a heat conducting layer is arranged between the heating sheets and the motor body, the gas holes are opposite to the fan blades,and a plurality of convection holes are formed in the circumferential surface of the motor body. The three-phase asynchronous motor has the effect that the motor burnout accident caused by the fact that the motor is affected by the damp is avoided, so that the service life of the motor is prolonged.

The invention provides a ventilating system and a ventilating method used for long-distance roadway tunneling. The ventilating system comprises n sealed chambers, a plurality of ventilators and ventilating pipelines. The n sealed chambers are formed on the lateral walls of roadways along the tunneling direction of the roadways according to preset intervals, n is a natural number and is increased monotonically along the increasing of roadway tunneling distance, and an air inlet and an air outlet are respectively arranged in each sealing chamber. The plurality of ventilators are arranged at roadway openings and in each sealing chamber. The ventilating pipelines comprise a plurality of sections of continuous pipelines which are connected with the ventilator at the roadway openings and extend into the inside of a first chamber, are connected with the ventilator of the ith sealing chamber and extend into the inside of the i+1th sealing chamber, and are connected with the ventilator of nth sealing chamber and extend into the part nearby a roadway working plane, wherein i is an natural number and 1<=i<=n-1. During ventilation, each ventilator presses fresh air near the ventilator into the ventilating pipelines connected with the ventilator.

The invention relates to a window type semiconductor air conditioner, comprising a mounting frame, at least one semiconductor air conditioner unit and at least one connecting plate. One side of the mounting frame is an indoor side and the other side is an outdoor side; the connecting plates and the semiconductor air conditioner units are rotatably connected and are movably mounted in the mounting frame. On one hand, an existing window can be completely or partially replaced and can be provided with lighting and ventilating functions; on the other hand, it is also possible to provide a function of adjusting indoor temperature, without using indoor space or destroying wall structure and indoor decoration.

The invention relates to a shutter type sunlight greenhouse, comprising a sunlight greenhouse frame, wherein the door panel and the back of the frame are provided with glass. The sunlight greenhouse frame disclosed by the invention is characterized in that two sides and top surface of the frame are respectively provided with a shutter blind, the shutter blind comprises a plurality of acanthuses which are arranged in parallel, the acanthuses are connected into a whole by virtue of annular steel cables which are arranged vertical to the acanthuses, and multiple steel cables are arranged on the acanthuses; and spindles at the upper end and the lower end of the shutter blind are respectively provided with turning wheels in the same quantity, and the steel cables are sheathed onto an upper turning wheel and a lower turning wheel at positions corresponding to the steel cables. According to the invention, the shutter blind is applied to the sunlight greenhouse, sunshading and ventilation of the sunlight greenhouse can be effectively realized, temperature and humidity in the sunlight greenhouse can be scientifically and effectively managed, integrality and accuracy of regulation on the temperature and humidity of the sunlight greenhouse can be realized, labour time can be saved, labour intensity and cost can be reduced, and higher economic value can be achieved.

The invention belongs to the field of ventilation and heat exchange equipment. The ventilation and heat exchange device of the control cabinet comprises a control cabinet body; the control cabinet body is of a rectangular structure; fixed bases are fixedly installed at the outer walls of the periphery of the bottom of the control cabinet body; each fixed base is of a rectangular structure; a threaded hole is formed in the outer wall of the top of each fixed base; a cabinet door is movably connected to one side of the outer wall of the front surface of the control cabinet body through a rotating shaft; a window of a rectangular structure is formed in the outer wall of the front surface of the cabinet door; and a locking clamping buckle is rotationally connected to the outer wall of the side, close to the window, of the cabinet door. With the ventilation and heat exchange device of the invention adopted, the interior of a pressure measuring instrument can be observed in time; emergency situations in a test process can be effectively avoided; safety performance is improved; a ventilation effect in the control cabinet body can be timely and effectively achieved; the service lives of electronic components are prolonged; and a dustproof effect and a damp-proof effect in the control cabinet body can be well achieved.

The invention discloses a positive pressure and negative pressure ambulance. A cabin of the positive pressure and negative pressure ambulance is separated into a driving cabin, a washing and disinfecting cabin and a medical care cabin, wherein a fresh air conditioning system is arranged at the top of the driving cabin; a positive pressure fan is arranged at the upper part of the washing and disinfecting cabin; negative pressure fans are arranged at the inner bottom of a cabin body of the medical care cabin; the positive pressure and negative pressure ambulance also comprises an air inlet system and an exhaust system; the air inlet system comprises an inlet air purifying and disinfecting device, the positive pressure fan and a first electric air valve which are sequentially connected; the air inlet system also comprises a tee pipeline; an air inlet of the tee pipeline is connected with the first electric air valve; a first air outlet of the tee pipeline is directly connected to the fresh air conditioning system; a second air outlet of the tee pipeline is connected to the fresh air conditioning system through a manual air valve; and the exhaust system comprises an exhaust purifying and disinfecting device, a negative pressure fan, and a second electric wind valve which are sequentially connected. Through the adoption of the positive pressure and negative pressure ambulance disclosed by the invention, the problems that in the prior art, pollution gas outside the ambulance is easy to enter the cabin, and pollution gas in the cabin is easy to leak outside the ambulance are solved.

The invention discloses a split type fresh air machine. The split type fresh air machine comprises an indoor unit and an outdoor unit. The indoor unit comprises a fresh air chamber, an air supply chamber, an air return chamber, an exhaust chamber and a heat exchange chamber. A fresh air connector is arranged on the outer wall of the fresh air chamber. An air supply connector is arranged on the outer wall of the air supply chamber. An air return connector is arranged on the outer wall of the air return chamber. An exhaust connector is arranged on the outer wall of the exhaust chamber. A total heat exchanger is mounted in the heat exchange chamber, the fresh air chamber and the air supply chamber are communicated through the heat exchange chamber, and the air return chamber and the exhaust chamber are communicated also through the heat exchange chamber. A first centrifugal fan is arranged in the air supply chamber. A second centrifugal fan is arranged in the exhaust chamber. An evaporator is arranged in the air supply chamber. A power controller is arranged in the air return chamber. The outdoor unit comprises a condenser, a compressor, a gas-liquid separator, a low-voltage switch, an electronic expansion valve, a dry filter, a high-voltage switch, a four-way reversing valve, a liquid storage device, a stop valve and a copper pipe. The outdoor unit is connected with the evaporator through the copper pipe. The split type fresh air machine can improve an air-conditioning air interchanger and is capable of saving more energy and more environmentally friendly.

The invention relates to a highway tunnel energy-saving ventilation control method based on the wind speed. Multiple sets of jet fans and wind speed and wind direction detectors are arranged in a tunnel in sequence from front to back in a distributed mode; the wind speed is detected through the wind speed and wind direction detectors; and the start-stop states of the jet fans in the tunnel are controlled through a data processing and control system according to the detecting result. A control method of the jet fans comprises the steps that a wind speed detecting value, detected by the corresponding wind speed and wind direction detector, of a certain point in the tunnel is collected, and start and stop of the corresponding jet fans are controlled by a controller according to the wind speed detecting value and the change rate calculated by the historical data. The starting number of the jet fans is controlled according to the detected wind speed historical data and the change trend of the speed historical data, the ventilation effect is achieved, meanwhile, the service life of the fans can be prolonged, and energy consumption is reduced.

The invention provides a wall ventilating system for a cold-formed thin-walled steel house. The system comprises an eave, a composite wall provided with a ventilating inter-layer, a plinth and an eaves flashing piece, wherein the eaves flashing piece is arranged at the top of the plinth; the composite wall provided with the ventilating inter-layer comprises an inner wall, a structural keel, a structural plate, a ventilating inter-layer and an external wall board; the ventilating inter-layer comprises ventilation keels which are vertically arranged at intervals and cavities formed between adjacent ventilation keels; the external wall board is nailed on the ventilation keels; a plurality of holes are formed in a bottom plate of the eave; gaps are formed between the external wall board and the eaves flashing piece; and the cavities in the ventilating inter-layer are communicated with holes and gaps in the bottom plate of the eave. The wall ventilating system promotes air circulation in the wall, so that a wall ventilating effect is achieved. Moreover, a better house sound insulation effect is achieved.

The invention provides a method for intelligently adjusting a subway ventilation air conditioner. The method comprises the following steps of S1, collecting parameters of at least one of an internal environment of a subway, an external environment of the subway and an operation state of subway equipment through a data collection module; S2, performing availability judgement on the parameters through a logic analysis module; S3, performing type judgement on the current operation time of the subway to determine whether the current operation time belongs to an air-conditioning season or a non-air-conditioning season; S4, based on a result of determining whether the current operation time belongs to the air-conditioning season or the non-air-conditioning season, adjusting the work states of different kinds of hardware equipment of the subway air conditioner through an equipment control module. In this way, by means of the method, real-time intelligent control and reasonable frequency adjustment are achieved, the comfortable environment of a station can be maintained, the energy consumption of the air conditioner can be lowered, reasonable ventilation and intelligent regulation are achieved, the comfortable waiting area environment is created for passengers accordingly, and energy waste is avoided.

The invention provides a massage type ventilating seat. The massage type ventilating seat comprises a seat back and a seat base. A pair of rotating shafts are arranged on the upper side and the lower side of the seat back, and a conveyor-belt type annular air bag is arranged on the rotating shafts in a stretching mode and is made of non-breathable elastic fabric, the surface, facing the back of the human body, of the annular air bag is provided with a transverse air hole band formed by air holes in an arraying mode, and a flexible mesh plate which is connected with the seat back and provided with the smooth surface is arranged in front of the surface, facing the back of the human body, of the annular air bag. The rotating shafts are driven by a stepping motor which continuously and alternately rotates in a positive and negative mode. The surface, making contact with the annular air bag, of the seat back is smooth. An air sac is arranged on the seat base, and air holes are formed in the upper surface of the air bag. The annular air bag and the air sac are connected to an air pump through ventilation pipelines. The massage type ventilating seat can achieve the ventilation function and the massage function simultaneously, and is simple in structure and low in cost.

The invention provides a thermal protection structure of an oil-gas mixture for an aero-engine. The thermal protection structure of the oil-gas mixture for the aero-engine comprises an oil-gas ventilation pipeline assembly inside a support plate, a sealing cavity outer casing adaptor seat, a sealing air guiding pipe assembly inside the support plate, a two-way ventilation adaptor, an exterior oil-gas ventilation welded assembly, a split bi-functional assembly, and an exterior sealing air guiding pipe assembly.

The invention discloses a hazardous gas detection system for an automobile, which is characterized by comprising a hazardous gas detector, an alarm device and an automobile body controller, wherein the hazardous gas detector is used for detecting the concentration change of hazardous gas in the automobile and transmitting a detection signal to the automobile body controller; the automobile body controller is used for sampling the signal transmitted by the hazardous gas detector, outputting alarm information and controlling a power window; and the alarm device is used for receiving an alarm signal output by the automobile body controller and outputting an acousto-optic alarm signal. According to the hazardous gas detection system, the hazardous gas detection is combined with the automobile body controller, the real-time hazardous gas detection in the automobile is achieved, timely alarm is achieved, the personal safety is ensured, and the window can be opened actively if necessary for ventilation.

The invention provides a seal structure and a ventilation valve and relates to the technical field of sealing with an aim to solve the problem about short service life due to a sealing strip of the ventilation valve is greatly affected by the external environment. The seal structure comprises an elastic sleeve which is made from metal materials, the elastic sleeve includes a connecting end and anelastic end with elasticity, the connecting end is connected with the elastic end to be used for being connected with valve blocks, and a cavity is formed in the elastic end. The seal structure is used for sealing between the valve blocks of the ventilation valve, sealing effect is good, and less affected by the external environment, the seal structure is long in service life.

The invention discloses a placement box for easy sterilization, which relates to the technical field of living articles, wherein walking wheels are installed on four corners of the bottom of a box body, a winding roller is installed on the upper left end of the box body, a dust shield is winded and connected on the winding roller, a driving motor is installed on a spindle of the winding roller, a supporting frame is installed on the bottom end inside the box body, a plurality of air draft fans are installed on the lower end of the supporting frame, a partition plate is installed inside a slide groove in the upper end of the supporting frame, a plurality of hooks are installed on two side faces of the partition plate, ultraviolet sterilization lamps are installed on the inner wall of the box body, an air purifier is installed on air outlets of the air draft fans, a controller is installed on the side wall of the box body, an operating panel is installed on the controller, the operating panel is connected to an input end of the controller, and an output end of the controller is respectively connected to the air draft fans, the air purifier, the ultraviolet sterilization lamps and the driving motor. The placement box for the easy sterilization provided by the invention can realize quick adjustment easily, can realize the sterilization and ventilation, is convenient in use and simple in operations, has high working efficiency and saves time.

The invention belongs to the field of power device monitoring, and relates to a power system intelligent monitoring device. The device comprises a base, a device shell is fixedly connected to the surface of the upper end of the base, heat conduction blocks are fixedly connected to the wall faces of the left side and the right side of the middle of the interior of the device shell; a connecting plate is fixedly connected between the outer side surfaces of the heat conduction blocks; a fixing plate is fixedly connected to the lower end of the connecting plate; the lower end of the fixing plate is fixedly connected to the bottom face of the device shell; a supporting base is fixedly connected to the upper end of the connecting plate; and power equipment is fixedly connected to the upper end of the supporting base. Through a first evaporation cavity and a second evaporation cavity, a push-pull piece or a trigger rod is driven to move according to the principle that different evaporation liquids in the first evaporation cavity and the second evaporation cavity are heated and expanded at different temperatures; a ventilation effect on the device shell or a heat absorption and cooling effect is achieved by spraying cooling liquid through the push-pull piece or the trigger rod.

The invention provides a dustproof and air exchange environment-friendly ventilation disinfection window and belongs to the field of indoor disinfection and ventilation and air exchange. An upper supporting plate and a lower supporting plate are fixed on an upper window body and a lower window body; shaft holes are formed in the upper supporting plate and the lower supporting plate; the lower end of a louver shaft is inserted into the shaft hole in the lower supporting plate and the upper end of the louver shaft is inserted into the shaft hole in the upper supporting plate; a gear is mounted at the upper end of the louver shaft; a gear seat is mounted on the upper surface of the upper supporting plate; a rack is mounted in a gear groove of the gear seat; teeth on the rack are engaged with teeth on the gear; a dustproof screen is mounted between the upper supporting plate and the lower supporting plate of the upper window body; a louver blade is fixed on the louver shaft; a filter screen is mounted at an air inlet of the lower window body; and the louver blade is driven by a mini-type variable frequency motor to rotate. The dustproof and air exchange environment-friendly ventilation disinfection window is simple in structure and convenient to manufacture and use; indoor ventilation air exchange, disinfection and dustproof functions are integrated and indoor natural ventilation and air exchange are realized; and a whole process does not consume energy sources and power so that the window is environmentally friendly and sanitary and the air quality of a living environment is improved.

The invention discloses a power battery module structure for a locomotive, which belongs to the technical field of power battery systems. The power battery module structure for a locomotive comprisesa shell, at least one cooling air duct is arranged in the shell, and an air return duct is arranged between the cooling air duct and the shell; at least one battery cavity is formed in the cooling airduct, a maintenance door correspondingly matched with each battery cavity is assembled on the cooling air duct in a sealing manner, and a power battery pack is arranged in each battery cavity. The structure further comprises an air conditioning unit. The air outlet of the air conditioning unit, the cooling air duct, the air return duct and the air inlet of the air conditioning unit are sequentially communicated to form a circulating passage. The structure further comprises a top cover, the top cover is assembled at the end part of the shell, and the air conditioning unit is arranged in the top cover; and a pressure relief air duct is arranged in the top cover, one end is provided with an explosion-proof pressure relief device, and the other end is communicated with the cooling air duct, so that the purposes of simplifying production and assembly requirements by realizing the internal modular design of the power battery system and improving the safety coefficient by improving the internal structure of the power battery are achieved.

The invention relates to a photovoltaic greenhouse system structure, and relates to the technical field of planting greenhouses. An inclined rod is fixedly disposed on support rods and is connected with a plurality of photovoltaic modules via brackets and hinges, and cylinders are fixedly disposed on the inclined rod and are connected with the photovoltaic modules through connecting rods. The lower edge of the outermost photovoltaic module is connected with a drainage ditch, and drainage holes are uniformly distributed in the drainage ditch and are connected with a fall pipe which is connectedwith a water tank. A spray pipe is fixedly disposed below the inclined rod, spray headers are evenly distributed in the spray pipe, and the spray pipe is connected with the water tank through a waterpump. A glass side plate is connected below the outermost photovoltaic module, and the photovoltaic modules are connected with the cylinders and the water pump through circuits. According to the photovoltaic greenhouse system structure of the present invention, electricity is provided for a ventilation system and an irrigation system through photovoltaic power generation, artificial ventilation and irrigation are not needed, automatic collection and irrigation of rainwater are achieved, energy is saved, and labor efficiency is high.

The invention discloses a ventilation and daylighting well structure for underground garages in residential quarters, comprising a garage top floor, a shaft, a well wall, a skylight support frame, a skylight, a side ventilation window, a gauze layer and a second connecting rod, the upper end of the garage top floor There is a shaft, the cross section of the shaft is rectangular, the shaft wall and the top floor of the garage are integrally cast with the same material, the inner wall of the shaft wall is provided with a reflective sheet, and the reflective sheet is installed on the shaft wall by screws. Four skylight support frames are arranged, and the four skylight support frames are respectively installed on the four sides of the vertical shaft. The structure of the present invention is simple and easy to use, and transparent glass is installed on the skylight, side ventilation window and bottom baffle, so the skylight, side ventilation window and bottom baffle do not block sunlight, and sunlight entering the shaft will be The reflective sheet reflects, thus allowing the light to shine into the underground garage.

The invention relates to a low-energy-consumption house energy-saving ventilation system, and belongs to the technical field of house ventilation systems. The application can conveniently and effectively extract outside air into a house and effectively extract air in the house out of the house, so that convection can be formed between indoor air and outside air to achieve a ventilation effect, then the comfort level of indoor personnel can be improved, meanwhile, by means of a filtering device, the effective filtering effect on the air exhausted into a room from the outside can be achieved conveniently, so that puree air is obtained, and the health of the indoor personnel can be guaranteed.

The invention provides a vehicle-mounted cooling air duct system ventilated via negative pressure. The system comprises a separate-cavity-conduction type heat exchanger, an exhaust fan, a secondary air conduit, a moist air conduit, a primary air conduit, a dry cold air conduit and a carriage. The secondary air conduit, the exhaust fan, the cavity of the separate-cavity-conduction type heat exchanger and the moist air conduit are connected sequentially, air in the carriage is extracted by the exhaust fan and transmitted to the separate-cavity-conduction type heat exchanger to evaporate, moist cold air generated is discharged through the moist air conduit, and negative pressure is generated in the carriage. The primary air conduit, the heat conducting cavity of the separate-cavity-conduction type heat exchanger and the dry cold air conduit are connected sequentially, air under the bottom of the vehicle is absorbed by the primary air conduit inlet and transmitted to the separate-cavity-conduction type heat exchanger to generate dry cold air, and the dry cold air is transmitted to the front of the carriage through the dry cold air conduit. Thereby, the vehicle-mounted cooling air duct system adopting negative pressure to proceed ventilation has the advantages of being free of pollution, healthy and friendly to environment, low in construction cost, less in energy consumption and no effect to overall appearance of vehicles.