132results about How to "Constant humidity" patented technology

The invention provides a fiber humidity adjusting board. The fiber humidity adjusting board is obtained by soaking a composite board in a humidity adjusting liquid, and the composite board is composed of a fiber material treated by carboxylation and porous inorganic particles dispersed in the fiber material, wherein the mass of the inorganic particles accounts for 5 to 30 percent of the solid content of the fiber, and the inorganic particles adopt one or the combination of silica gel, clay, concavo-convex rods, diatomaceous earth, activated carbon, wood charcoal and bamboo charcoal. The invention has the advantages that the fiber humidity adjusting board is a precise humidity adjusting product, when the ambient humidity changes, response can be rapidly made, and through moisture absorbing and releasing, the ambient humidity can be balanced, so as to maintain the humidity in the environment to be constant and ensure that the phenomena of wetting, mould damage or drying and cracking of the stored articles can not occur within the adjusting environment. A strap-shaped fiber humidity adjusting board is adopted, which can be cut arbitrarily; the humidity adjustment can be performed in function, and the moisture holding amount can reach and surpass the equivalent international humidity adjusting products. The fiber humidity adjusting board adopts non-toxic, harmless and recoverable raw material, and the fiber humidity adjusting board is a new-generation green and environment-friendly product.

The invention relates to a catalyst for adsorbing formaldehyde as an indoor pollutant in high humility at room temperature, belonging to the technical field of pollution control. On the basis of cerium oxide, by adding different metal oxides and transition metals, a ceria-based complex oxide solid solution with different proportions and components is prepared by using a coprecipitation method; the metal oxide is one of titanium dioxide, manganese oxide, ferric oxide, cobalt oxide and zinc oxide or a mixture of more than one kind of the oxides; and the transition metal is one or a mixture of more than one of copper, silver and gold. The catalyst has simple preparation process and stronger formaldehyde adsorption capacity in high humility at room temperature, solves the problem of formaldehyde adsorption capacity reduction of active carbon, and the like under the high-humility environment, and maintains activity for a relatively long time.

The invention relates to a fresh air variable air rate energy saving method and device based on absolute humidity control. The fresh air variable air rate energy saving method is characterized in that the fresh air variable air rate energy saving device based on the absolute humidity control is arranged at the tail end of the fresh air system of an air conditioning system, the opening degree of a valve is automatically controlled through the fresh air variable air rate energy saving device according to the change of indoor humidity, and the fact that the volume of fresh air supplied indoors meets indoor actual dynamic needs is guaranteed; the air volume is automatically adjusted according to the change of the moisture content, namely, the absolute humidity of a room, air output by a fresh air handling unit is dry air of a fixed state, and the relative humidity value of the room is guaranteed; the coupling relationship of relative humidity and dry-bulb temperature is relieved. The absolute humidity, an indoor environment parameter, is controlled, the indoor relative humidity can be precisely controlled, the coupling relationship of the relative humidity and the dry-bulb temperature is relieved well, the moisture condensation risk of a cold emission plate is avoided, meanwhile, control is stable and reliable, and the fresh air variable air rate energy saving method and device have good comfort and the good energy saving effect.

The present invention describes a drying system for a dishwasher having a washing tub (2). The drying system comprises: a first fan (3) for propelling a first air stream through the washing tub (2) toan air transporting space (9) situated in the dishwasher outside the washing tub (2), wherein the first air stream is propelled in such a way that humidity in the washing tub (2) is absorbed by the first air stream and propelled to the air transporting space (9); and a second fan (4) for propelling a second air stream received from an area outside the dishwasher to the air transporting space (9).The drying system is further arranged such that the first and the second air streams are mixed in the air transporting space (9), and in that the mixed air stream is propelled to an exhaust opening (10) leading out from the dishwasher. Thereby, an efficient drying process can be achieved wherein air leaving the dishwasher has an appropriate temperature and humidity.

The invention discloses a dampproof and dehumidification switch cabinet. The switch cabinet comprises a cabinet body and a cabinet door arranged on the cabinet body. A handle and an observation window are arranged on the cabinet door. A hollow separator plates is parallel arranged in the cabinet body. Multiple through holes are arranged in the separator plates which are connected with an air exhausting pipe. The other end of the air exhausting pipe stretches out of the cabinet body and then is connected with a gas exhausting device. A heating groove is arranged in the middle of the bottom of the cabinet body. A heating pipe is arranged in the heating groove. A temperature sensor is arranged at the bottom of the cabinet body. A humidity sensor is arranged on the separator plate. A PLC controller is arranged in the cabinet body and is connected with the temperature sensor and the humidity sensor via data lines. The PLC controller is electrically connected with the gas exhausting device and the heating pipe. The switch cabinet is simple in structure and convenient to manufacture; temperature and humidity in the cabinet body can be automatically controlled and displayed on a liquid crystal screen on the cabinet door; and the switch cabinet is brightly illuminated and a light can be easily opened.

The invention discloses a convenient-to-adjust constant-temperature and constant-humidity power distribution cabinet. The power distribution cabinet comprises a base, a cabinet body, a top cover and an adjusting mechanism, wherein the adjusting mechanism is arranged in the base, the cabinet body is arranged on the adjusting mechanism, the top cover is arranged on the cabinet body, the adjusting mechanism comprises a fixing base, a sliding rail, a sliding plate, a supporting plate, a wedge block, a first servo motor, a first lead screw, a driven wheel, a guide rod, a first sliding block, a driving wheel, a first gear, a second sliding block, a first rack and a second servo motor. The power distribution cabinet is advantaged in that through the adjusting mechanism, the height of the cabinetbody is conveniently adjusted, moreover, the cabinet body can be driven to move in the horizontal direction, and adjustment and use are convenient; through a sensor, a controller and the rack jackingtop cover, the cabinet body is not a closed space, air flow is accelerated, and heat dissipation and dehumidification are carried out.

The invention provides a cabinet micro-environment monitoring system which comprises an outdoor refrigerating unit, a cooling cabinet, a monitoring system and a circulating pipeline consisting of a water inlet pipe, a water outlet pipe and a water supply pump, wherein the water supply pump is mounted on the water inlet pipe; the water inlet pipe and the water outlet pipe are connected between the outdoor refrigerating unit and the cooling cabinet; and the monitoring system is connected with the cooling cabinet. The invention provides a scattered heat dissipation scheme and a cabinet internal constant-temperature constant-humidity device for the cabinet of a large machine room so as to monitor the parameters in the cabinet and guarantee the operation safety of the cabinet.

The invention relates to a control system for a plant culturing box, particularly to a single-chip-microcomputer-based intelligent control system and control method of a plant culturing box. The control system is composed of a detection module, an environmental control module, a memory module and an input output module, wherein the detection module, the environmental control module, the memory module and the input output module are connected with a single-chip microcomputer module. The environmental control module is used for controlling the temperature, humidity, light intensity and CO2 concentration inside a plant culturing box. The control system and control method have advantages of convenience is operation, complete functions, high efficiency, energy conservation, and high extensibility; and intelligent simulation and control of parameters like the illumination, temperature, humidity and CO2 concentration and other parameters in a greenhouse environment can be realized. The temperature and humidity control systems used a PID control mode; the maximum absolute error of temperatures is 1 DEG C and the maximum humidity relative error control is + / -5%; the constant temperature and humidity fields are realized; the light intensity and CO2 concentration can be controlled accurately; and the growth needs of plants can be met.

The invention discloses a method for feeding dairy cows by using a micro-ecological fermentation bed. The micro-ecological fermentation bed is arranged in a dairy cow living quarter and a pit of which the size is equal to that of the dairy cow living quarter, wherein the depth of the pit is between 0.6 and 1.2 meters; and a padding prepared by fermenting an organic material and a compound microbial agent is arranged in the micro-ecological fermentation bed. The method has the advantages of high capability of decomposing wastes such as dairy cow mature and the like and capabilities of meeting the environmental requirement of the growth of the dairy cows, improving the disease resistance of the dairy cows and remarkably lowering feeding cost.

The invention discloses a morchellaconica facility cultivation technology, and belongs to the technical field of edible fungus cultivation. The facility cultivation technology specifically comprises the following steps: building a mushroom shed, constructing ridge beds, carrying out sowing, building small arched sheds, supplementing a nutrient matrix, carrying out mycelium management and protection, carrying out mushroom acceleration, carrying out mushroom cultivation and carrying out harvesting. According to the invention, the influence of external environment to the growth of morchellaconicais effectively avoided by the facility cultivation of a greenhouse and the small arched sheds, fruiting is uniform, the fruiting rate is stable, the problems of low yield, long period and the like are solved, and an idea is provided for sustainable development of the morchellaconica industry.

The invention relates to a culture dish. The culture dish comprises a base plate and a top cover the diameter of which is slightly smaller than that of the base plate, wherein the bottom surface, close to the side wall, inside the base phase is provided with a plurality of lugs; the bottom surface inside the base phase is also provided with a protruded inner ring; when the top cover is covered inthe base plate, the side wall of the top cover is arranged between the inner ring and the side wall of the base plate; and a gap is reserved between the top of the inner ring and the top surface inside the top cover, and the gap is larger than thickness of a culture medium. The culture dish is simple in structure; the inner space of disposable culture dish is fully utilized, thus the utilization rate of the disposable culture dish is improved, namely the cost is reduced, so that the culture dish is environmentally-friendly and saving; and the culture environments of the base plate and the topcover are consistent, and the interior humidity of the culture dish is constant.

The invention relates to the field of soil corrosivity detection and analysis, specifically an in-situ soil sampling resistivity measurement device. The device is suitable for the soil in-situ resistivity analysis in the petroleum field, the petrochemical field, the power field and the building field. The device comprises an upper cover, an insulating cylinder, measurement electrodes, and a lowercover. The specific structure of the device is that the upper and lower covers are arranged in a vertically opposite manner; the insulating cylinder is disposed between the upper and lower covers; theinner wall of the insulating cylinder is oppositely provided with the stainless steel measurement electrodes. In use, the top of the insulating cylinder is provided with an auxiliary sampling device,and the auxiliary sampling device comprises a lower press rod, a supporting rod and a press ring. The lower press rod and the press ring are connected with each other through the supporting rod, andthe auxiliary sampling device applies a pressure to the insulating cylinder through the press ring. The device provided by the invention can achieve the accurate measurement of the resistivity of a to-be-detected soil layer in a non-disturbed state, is used for the in-site soil sampling, and truly reflects the soil resistivity at a sampling position.

There is provided a liquid droplet discharge device that allows a cap to be easily mounted on a liquid droplet discharge head while ensuring sealability. A cap 200 includes a cap body 202 that is formed of a box and a sealing member 220 that is formed of a frame. The sealing member 220 is adapted to be capable of being divided into a first frame component 222 and a second frame component 224. The first frame component 222 is provided integrally with the cap body 202 and a head 72 is provided with the second frame component 224. When the head 72 is mounted on the cap 200, the first frame component 222 and the second frame component 224 are combined with each other, surround the outer periphery of the tip portion of the head 72, and seal a gap between the head 72 and the cap 200.

The invention discloses a spiral extrusion type excrement solid-liquid separation device capable of controlling the solid humidity, and relates to an excrement solid-liquid separation device. The device aims at solving the problems that an existing excrement solid-liquid separation device is high in maintenance cost and long in separation time, separated-out solid is high in moisture content, accordingly, the microorganism reaction environment cannot be effectively controlled, and a screen net type solid-liquid separation device is likely to be blocked. The device is composed of a motor, a separator shell, a screen drum, a packing auger and a discharge outlet compression cover. A packing auger shaft of the packing auger is provided with multiple spiral blades. The thread distance of each spiral blade is gradually reduced from the side of the closed end of the separator shell to the side of a conical opening of the separator shell. The screen drum is composed of multiple wedge-shaped strip plates distributed at equal intervals. The inner wall of the screen drum is provided with multiple blocking teeth. The device is stable in operation, solves the problem that blockage is likely to be caused, can control the humidity of solid waste, can meet the requirements of fungi for living environment to enable fungi to be in the optimal fungus living and growth conditions, and is applicable to excrement solid-liquid separation.

The invention discloses an air purifier achieving circular ventilation and one-way air exhaust. The air purifier achieving circular ventilation and one-way air exhaust comprises an open-type air purifier body. The air purifier body is provided with an openable door. An air outlet is formed in the upper end of the air purifier body. Second inlets are formed in the two sides and the bottom of the air purifier body. A filter assembly is arranged in the air purifier body. An additional filter is arranged at the upper end of the filter assembly. The air outlet is formed in the door, a fan is arranged in the middle of the air outlet, and the fan comprises a motor. Blades are arranged at the end of a rotary shaft of the motor. A control panel is arranged on the outer side of the door. The air purifier can be installed on an outer wall or a window frame to feed air sucked from outside into a room after purifying the air, so that the oxygen content of the air in the room is maintained; an outside air inlet can also be closed, and then the air in the room can be sucked into the air purifier, purified, filtered and then fed into the room again, so that the air in the room has constant temperature and humidity, and the air purifier can operate in different ways by obtaining the indoor temperature and humidity and the oxygen content through a sensor.

The invention discloses a constant temperature and constant humidity storage cabinet. The constant temperature and constant humidity storage cabinet comprises a box body, a thermostat for controlling the temperature of the box body, a dehumidifier for controlling the humidity of the box body and an automatic control device for controlling the devices to operate; the dehumidifier comprises at least two sets of dehumidifying systems connected in parallel; each dehumidifying system comprises an air pump and more than one air chambers hermetically containing regenerated drying materials and heating modules. The scheme that multiple dehumidifying systems are connected in parallel is adopted, so other dehumidifying systems can normally work when one set of system is subjected to regeneration, continuous uninterrupted dehumidifying is realized to ensure the unchanged stable humidity in the box body; each set of dehumidifying system adopts a multi-air chamber serial connection structure during dehumidifying, so dehumidifying gases can dehumidify in a grading mode, the dryness is improved by multiple levels, and the dryness of the gas achieving the cabinet body is higher; each air chamber is independently regenerated during regeneration, so humid gases generated by the regeneration are short in travel without mutual crossing, and the regeneration is thorough; a dehumidifying inner circulation and regeneration outer gas production design is adopted, so the cleanliness of air in the box body is ensured, the drying speed is accelerated, and the regeneration is efficient, energy-saving, low-carbon and environment-friendly.

The invention relates to the technical field of refrigeration, in particular to a drying chamber for a direct-cooling refrigerator and the direct-cooling refrigerator. A sealed cavity of the drying chamber is defined by a heat conducting shell and a door, and a semiconductor refrigerating assembly is arranged in the sealed cavity and comprises a semiconductor refrigerating structure arranged in an outer cover of the assembly and an air duct surrounding the semiconductor refrigerating structure. An air inlet of the air duct is arranged at the cold end of the semiconductor refrigerating structure, and an air outlet of the air duct is arranged at the hot end of the semiconductor refrigerating structure. The middle of the air duct communicates with a drainage pipe. The drainage pipe extends outwards from the shell which is mounted in a mounting position in a refrigeration chamber of the direct-cooling refrigerator. The drying chamber is mounted in the refrigeration chamber of the direct-cooling refrigerator. Air in the drying chamber enters the air duct, the cold end of the semiconductor refrigerating assembly is used for cooling the air, water is condensed and guided out, and the humidity is lowered; and the air is heated again by the hot end at the air outlet and enters the drying chamber again, the humidity of the air which enters the drying chamber again is lowered, the temperature is basically not changed, and therefore the humidity in the drying chamber meets the low-humidity standard.

The invention discloses a deacidification type constant-temperature and constant-humidity purification display cabinet. The deacidification type constant-temperature and constant-humidity purification display cabinet comprises a display chamber (1) for storing an object to be displayed, and an air treatment chamber (2) for adjusting the inner environment of the display chamber (1), wherein the display chamber (1) and the air treatment chamber (2) are mutually independently arranged and are in fluid connection through an air pipeline; the air treatment chamber (2) is internally provided with a temperature adjusting assembly, a humidity adjusting assembly and a mixed type filter (10) capable of carrying out deacidification treatment on air; the air in the display chamber (1) flows into the air treatment chamber (2) to be treated; and the treated air flows back into the display chamber (1). The inner part of the deacidification type constant-temperature and constant-humidity purification display cabinet disclosed by the invention is a sealed type space, and the display region is communicated with side plates on the two sides and is connected with a constant-temperature and constant-humidity box at the bottom, so that inner circulation of the air is realized.

The invention relates to a mould-proof curing phase and temperature air-conditioning warehouse for scripts and paintings. The mould-proof curing phase and temperature air-conditioning warehouse for scripts and paintings is characterized in that a warehouse body comprises a script and painting storage chamber and an air conditioning chamber, a thermal insulating wall is arranged between the script and painting storage chamber and the air conditioning chamber, multiple organic-glass script and painting storage boxes are placed in the script and painting storage chamber, an air conditioning cabinet and an air cooler are placed in the air conditioning chamber, the air conditioning cabinet regulates the humidity parameter, the air conditioning parameter and the mould-proof curing agent content parameter of the script and painting storage boxes connected between a main air inlet pipe and a main air outlet pipe in parallel through the main air inlet pipe and the main air outlet pipe, and the air cooler regulates the temperature of the whole closed and heat-insulating script and painting storage chamber. According to the mould-proof curing phase and temperature air-conditioning warehouse for scripts and paintings, due to the fact that the multiple script and painting storage boxes are placed in the script and painting storage chamber, a batch of scripts and paintings can be placed in the script and painting storage boxes, and requirements for storage of a large number of scripts and paintings of museums and other occasions can be met.

A roll(12) of a recording paper(11) is rotatably contained in a paper magazine(2). The magazine(2) is provided with a mouth(8) through which the recording paper(11) is drawn out and fed to a printer. A leading edge of the recording paper(11) is adapted to come into contact with an outer periphery of the roll(12) by a contacting device(51). The remainder of the roll(12) is indicated by an indicating device(80). The mouth(8) of the magazine(2) is opened and closed with a shutter unit(9). The inside of the magazine(2) tightly closed with the shutter unit(9) is kept at constant humidity by a humidity conditioning paper(90). On the other hand, the roll(12) is caught between a pair of flanges(133, 134). One of the flanges is biased by plate springs(130a, 130b, 130c) toward the other of the flanges so that the roll(12) is held in the magazine without looseness.

The invention discloses a temperature and humidity control device used for an airtight space. The temperature and humidity control device comprises an air circulation device, a temperature regulation device and a humidification device. The air circulation device comprises a ventilation pipeline, ventilation holes, an airflow switching controller, an air inlet and an air outlet, wherein the ventilation holes are formed in the side wall of the ventilation pipeline, the airflow switching controller is installed on the ventilation pipeline, and the air inlet and the air outlet are formed in the ventilation pipeline. According to the temperature and humidity control device, the air temperature and humidity in the airtight space can be constant, the temperature and humidity in the airtight space can be uniformized, and meanwhile internal and external air exchange can be achieved.

The present invention relates to a low-oxygen constant-humidity device, which comprises an airtight enclosure having a volume of less than 20 m<3>; a deoxidant; wherein the deoxidant is configured toadjust and maintain the oxygen content in the airtight enclosure; a humidity control agent and / or a drying agent, which can be configured to adjust and maintain the humidity in the airtight enclosure;and wherein the amount of humidity control agent and / or drying agent and deoxidant is based at least in part on the volume and sealability of the airtight enclosure. The invention further relates toa regulation and control method of the low-oxygen constant-humidity device. According to the low-oxygen constant-humidity storage device and a storage method, an active oxygen reduction and humidity control device is not included, and the oxygen concentration and humidity in the airtight space in the storage cabinet can be kept constant without any ventilation equipment.

The invention discloses a method for quickly detecting the quality of pepper, a device and application. The method comprises the following steps: indirectly detecting the water content by utilizing asound sensor; detecting the size, color, seed broken rate and mildew degree of pepper by utilizing a visual sensor; detecting the odor emitted from the pepper by utilizing an odor sensor; detecting the weight of the pepper by utilizing a pressure sensor; collecting signals of the sensors through a data processing system, processing, fusing according to weight, and performing data processing with asinglechip to finally obtain the index of the pepper quality. According to the method, the pepper is subjected to integral evaluation through sensors, the stability of a detection system and uniformity of a detection result can be ensured, and quick, non-invasive and intelligent detection on the pepper quality can be realized. The device is convenient to carry and easy to operate, and can be widely applied.

The present invention relates to the technical field of in-vivo sampling and inspection, and particularly relates to an oncology department in-vivo sampling and inspection device. The oncology department in-vivo sampling and inspection device comprises a box cover, an upper end surface of the box cover is provided with a temperature display screen, one side of the temperature display screen is provided with two indicator lights, a lower end surface of the box cover is provided with a box body, an inside of the box body is provided with an in-vivo state display screen, one side of the in-vivo state display screen is provided with an operation button area, one side of the operation button area is provided with a fourth partition plate, one side of the fourth partition plate is provided with a medicine placing chamber, one side of the medicine placing chamber is provided with a sponge storage block, an upper end surface of the sponge storage block is provided with a sampling sleeve pipe, one end of the sampling sleeve pipe is provided with a sampling head, and the sampling head comprises a camera, a connecting sleeve, a sampling knife, a scraping blade mounting sleeve, a connecting column and a limiting block. The oncology department in-vivo sampling and inspection device is provided with the easily replaceable sampling head, is convenient for sampling, can transport a plurality of samples, and can isolate contamination between the samples.

The invention relates to the technical field of workshop auxiliary equipment, in particular to intelligent conditioning equipment applied to factory production workshops. According to the intelligentconditioning equipment, temperature and humidity in the workshops are automatically adjusted, so that the influence of the temperature and the humidity on the production process of products can be effectively avoided, the quality of the products is improved, the temperature and the humidity in the workshops are guaranteed to be relatively constant, and the practicability and the reliability are improved. The intelligent conditioning equipment comprises a shell, a water tank, a water pump, a first water pipe, a second water pipe and a heating bin, wherein the water tank is arranged at the lowerleft side in the shell; the water pump is arranged on the water tank; the first water pipe and the second water pipe are both arranged on the water pump; and the lower input end of the first water pipe penetrates through the water tank and extends into the lower side in the water tank.

An air quality measurement device includes a housing configured to rest on a shoulder of a user. The housing includes an air inlet directed to a breathing zone of the user, and an air outlet. An air quality sensor and an air pump within the housing is connected in-line between the air inlet and the air outlet. A calibration system for an air quality measurement device includes a gas sensor, a particulate matter sensor, and calibration elements: a particulate matter zeroing element configured to calibrate the particulate matter sensor, a gas sensor zeroing element to calibrate the zero response of the gas sensor(s), and a gas sensor known concentration element to calibrate the concentration response of the gas sensor(s).

The invention discloses a self-water-gathering constant-humidity dehumidification unit. A compressor is connected with a fin condenser. The fin condenser is connected with a dry filter. The dry filter is connected with a liquid storage device. The liquid storage device is connected with an expansion valve. The expansion valve is connected with a liquid distribution head. The liquid distribution head is connected with a fin evaporator. The fin evaporator is connected with a compressor. Air sucked by a centrifugal fan passes through a temperature and humidity sensor, the fin evaporator, the fin condenser and a humid film. A condensate water tray is connected with a condensate water tank. The condensate water tank is connected with a water filter. The water filter is connected with a micro water pump. The micro water pump is connected with a spraying head. The spraying head is located above the humid film. An overflow port is located in the condensate water tank. A water level sensor is located in the condensate water tank. The temperature and humidity sensor, the water level sensor, the compressor, the centrifugal fan and the micro water pump are all connected to a controller. The self-water-gathering constant-humidity dehumidification unit has the advantages that no extra water supply is needed, and it can be guaranteed that the indoor humidity is constant by directly using condensate water generated by the dehumidification unit for compensating for the indoor humidity; the problems that a traditional dehumidification unit is large in humidity fluctuation and low in precision, is not provided with an external water supply and cannot be adjusted accurately are solved.

The invention discloses a solar photoelectric and photo-thermal integrated greenhouse, and relates to the technical field of greenhouses. The solar photoelectric and photo-thermal integrated greenhouse comprises a fixing plate, wherein a solar cell panel is fixedly connected to the inner wall of a placing groove, greenhouse heat preservation adjusting parts are mounted on annular plates, the two greenhouse heat preservation adjusting parts are symmetrical, the greenhouse heat preservation adjusting parts are connected with the fixing plate, and a greenhouse film supporting part is mounted at the bottom of the fixing plate. The greenhouse is reasonable in structure, by arranging the greenhouse heat preservation adjusting parts, when the temperature is too low, the interior of the greenhouse is always at the optimal temperature for plant growth through heating and heat preservation of the greenhouse heat preservation adjusting parts, when sunlight is sufficient, light can directly enter the greenhouse by shrinking the greenhouse heat preservation adjusting parts and plants can perform sufficient photosynthesis, and when the temperature in the greenhouse is too high, the bottom of the greenhouse is locally lifted up by adjusting the greenhouse film supporting part, so that the interior of the greenhouse is ventilated.

The invention provides a low-temperature condensing type multifunctional air cleaning device. The device comprises a housing, wherein a spraying chamber, a cold flowing channel and a hot flowing channel are sequentially arranged on the housing from center to the side edge; a cold and hot flowing channel separating plate and a semiconductor refrigerating sheet are alternatively arranged between thecold flowing channel and the hot flowing channel and encircle a separating layer provided with a gap; the gap of the separating layer is treated as a division port; the cold flowing channel communicates with the hot flowing channel through the division port; a cold end fin and a hot end fin are arranged on the semiconductor refrigerating sheet and are correspondingly positioned in the cold flowing channel and the hot flowing channel; the spraying chamber communicates with the cold flowing channel through a cold flowing channel inlet; an air inlet and an air outlet are formed in the housing; the air inlet communicates with the spraying chamber, and the air outlet communicates with the hot flowing channel; and an ultrasonic humidifier is arranged in the spraying chamber. The device integrates a plurality of functions and has the functions of removing PM2.5, removing formaldehyde and other polluting gas which are easily dissolved in water, dehumidifying air, and humidifying air.