43results about How to "Avoid air contact" patented technology

The invention relates to a quantum dot film and a preparation method thereof applied to the field of optical display. The quantum dot film comprises a first base film, a quantum dot layer and a second base film, wherein the quantum dot layer is positioned between the first base film and the second base film, and the quantum dot layer comprises photo-curing glue, a quantum dot nano-material dispersed in the photo-curing glue, and a light diffusing agent. The preparation method comprises the following steps: preparing a quantum dot concentrated liquid, preparing a photo-curing glue material, forming the quantum dot layer on the first base film, placing the second base film on the quantum dot layer and forming a film by photo-curing. The quantum dot film and the preparation method thereof provided by the invention have the beneficial effects that the quantum dot nano-material is uniformly and stably dispersed in a photo-curing glue system with 100% solid content, so that the obtained quantum dot film has high quantum luminescence efficiency; the film is formed by photo-curing without heat curing, quantum dots cannot be damaged due to high temperature; on the one hand, the working procedures are reduced, and the production efficiency is improved; on the other hand, the equipment investment and energy consumption are reduced, and the production cost is reduced.

The invention relates to a lithium cobaltate-coated high-nickel ternary positive electrode material and a preparation method thereof. The preparation method comprises the following steps of: mixing a high-nickel ternary precursor, nano cobaltosic oxide, and a lithium source, and calcining the mixture at 750-820 degrees centigrade to obtain the lithium cobaltate-coated high-nickel ternary positive electrode material, wherein the mass ratio of the nano cobaltosic oxide to the high-nickel ternary precursor is 0.05 to 0.2:1. The surface of the high-nickel ternary positive electrode material is uniformly coated with a layer of lithium cobaltate material, thereby protecting the reticular structure of the high-nickel ternary positive electrode material, reducing the nickel-lithium ion mixing, improving the electronic conduction, the cycle performance and the rate performance of the material, additionally avoiding direct contact between the surface of high-nickel ternary positive electrode material and the air, reducing the water absorption of the material and the formation of surface lithium hydroxide and lithium carbonate, reducing residual alkali on the surface of the material, and optimizing the processing properties of the material.

A liquid dispenser is described and includes a cover connecting to the opening of a container and a main body connecting to the cover. The main body includes a chamber in communication with the cover and a liquid outlet for liquid discharge, wherein a liquid output device is arranged in the chamber, a button is arranged on the main body for controlling the action of the liquid output device, a one-way valve is arranged in the liquid output device for adjusting the open / close state of a liquid output passage. The liquid dispenser described is novel in design, simple and compact in construction. The liquid dispenser described can employ the operating principle of a one-way valve so as to realize liquid discharge in any direction.

A liquid dispenser is described and includes a cover connecting to the opening of a container and a main body connecting to the cover. Th e main body includes a chamber in communication with the cover and a liquid outlet for liquid discharge, wherein a liquid output device is arranged in the chamber, a button is arranged on the main body for controlling the action of the liquid output device, a one-way valve is arranged in the liquid output device for adjusting the open / close state of a liquid output passage. The liquid dispenser described is novel in design, simple and compact in construction. The liquid dispenser described can employ the operating principle of a one-way valve so as to realize liquid discharge in any direction.

A process relating to a one step low pressure injection molding method of encapsulating high voltage circuitry while incorporating a unique recessed high voltage connector contact means within the injection molding material, greatly reducing the component size, while increasing the capabilities of this type of circuitry. The process reduces the manufacturing time and maintains a clean sealed contact point for repeated usage by the means of a conductive rubber slug. An additional advantage is by creating cavities through the circuit board; axially leaded high voltage components may be conveniently mounted without additional assembly components while being fully encapsulated.

The invention relates to an anti-abrasion anti-etching alloy rod production method through a powder metallurgy process. Iron base alloy powder with anti-abrasion anti-etching performance characteristics and inner carbon steel or stainless steel alloy are subjected to hot isostatic pressing encapsulation combination to be formed into anti-abrasion anti-etching alloy rods through hot isostatic pressing combination. The produced alloy rod tissue structure is compact completely, and two layers of alloy are integrated tightly, accordingly, the requirement of application work conditions for anti-abrasion anti-etching performances is met, the use amount of high-cost alloy powder is reduced, the production cost is reduced, and the product market competitiveness is improved. The method is simple to operate, easy to control and provided with wide application markets.

The invention discloses a steel structure factory building, and belongs to the technical field of steel structure factory buildings. The steel structure factory building comprises a roof and a rectangular building. Upright columns are vertically arranged at four corners of the building, support columns are vertically arranged between the adjacent upright columns, the roof comprises two hinge pins, cover plates are rotationally connected onto the two hinge pins and are obliquely arranged, connecting shafts are arranged between the two hinge pins, and the two hinge pins are positioned between the support columns which are oppositely arranged, and are fixedly connected with the support columns; balls are fixedly connected onto the two cover plates, cylinders are arranged on the tops of the upright columns, grooves are formed in the tops of piston rods on the cylinders, limit grooves are formed in the grooves, and the balls are slidably connected with the limit grooves. The steel structure factory building has the advantage that operators can be prevented from falling down on the ground due to unsteady treading when the steel structure factory building needs to be examined and repaired.

The invention relates to a dustproof easy-to-install roof solar cell module. According to the dustproof easy-to-install roof solar cell module, installation of the whole roof solar cell module can beconveniently completed at the installation site through tiles of a precast special structure, and a bracket does not need to be fixed on a roof, so that installation is convenient; left and right twoadjacent roof solar modules are overlapped with each other through a left circular arched edge and a right circular arched edge; front and back two adjacent roof solar modules are connected through anupper hook jaw and a lower hook jaw, so that the roof solar modules are firm and reliable when arranged on the roof, and the service life of the roof solar modules is prolonged; and a gap between thetops of a vertical outer edge and a vertical inner edge of each frame is slightly greater than the thickness of a corresponding cell component, and the gap is still reserved after each cell componentis inserted into the corresponding frame, so that rainwater, dust and sundries fall to a bottom edge of a bottom border and fall to the roof from through holes in the bottom edge, thereby ensuring normal photoelectric conversion of the solar cell module.

The invention discloses a sand-like strong alkali metal filtering washing system and washing process. The system comprises a washing device, a material feeding pipeline, an air inlet pipe, a blow-down pipe, a white oil and solvent discharging pipe and a solvent washing pipeline, wherein the washing device comprises a tank body, a stirrer and a filtering assembly; a material inlet is arranged on the top of the tank body; an air inlet and a blow-down opening are arranged at the front side and the rear side of the material inlet respectively; a strong alkali metal outlet is arranged on the side wall of the tank body; a white oil and solvent outlet is arranged at the bottom of the tank body; the filtering assembly comprises a filtering net, wherein the filtering net is installed at the lower part of the tank body; the stirrer comprises a transmission device and a stirring assembly; the stirring assembly comprises a stirring shaft and a paddle; and the lower end of the stirring shaft is connected with the paddle. The sand-like strong alkali metal filtering washing system provided by the invention can carry out combination operations, i.e. filtering, stirring, washing and back-flashing on sand-like strong alkali metal and white oil mixtures; the white oil in the sand-like strong alkali metal can be isolated effectively, and the sand-like strong alkali metal is washed by the solvent, so that the system is a specific device used in the process of sand-like strong alkali metal washing.

The invention discloses a capillary-conduit electronic cigarette atomizer. The capillary-conduit electronic cigarette atomizer comprises an oil storage bottle (7), an oil guide screen (5), and a heating wire (2), wherein the oil guide screen (5) comprises a sieve plate (12), a capillary conduit (4) penetrating through the sieve plate (12) and extending away from the oil storage bottle (7) is arranged on the sieve plate (12), third oil guide cotton (11) is accommodated in the capillary conduit (4), one end of the oil guide cotton (11) is in contact with tobacco tar in the oil storage bottle (7), and an oil injection hole (10) is formed in the side wall of the sieve plate (12); the heating wire (2) is fixed at one end, away from the sieve plate (12), of the capillary conduit (4) in a spiralstructure, and second oil guide cotton (9) is accommodated in a spiral cavity of the heating wire (2); and the oil guide screen (5) is in sealing connection with the oil storage bottle (7) through a silicone sealing plug (6). The electronic cigarette atomizer disclosed by the invention not only can reduce the risk of oil leakage, but also can prevent dry burning of the internal heating wire.

An ROB stack (10′) contains a plurality of stacked ROB cells (10) made from: thin metal bipolar housings (13) having air inlets and exits and horizontal channels for feeding air between the inlets (16) and exits (17), the channel having top ridges and also grooves (25) for containing active material (34); a porous air electrode (21 / 39) next to the air channels allowing air contact; a metal electrode (36); and an oxygen ion transfer membrane (37) acting as electrolyte; wherein the plurality of all the assemblies form vertical air inlet and outlet plenums.

The invention relates to the technical field of propeller accessory manufacture, in particular to an inverted model structure of a marine adjustable pitch propeller oil cylinder. The structure comprises a sand box, a riser, a I# core, an II# core, chilling blocks and a casting system, wherein the II# core is an oil cylinder liner core, is inverted in the middle of the sand box and forms an oil cylinder type cavity with an inner box of the sand box; the riser is placed in the sand box, the upper end surface of the riser is flush with the upper surface of the sand box, and the riser is located at the upper part of the oil cylinder type cavity; the I# core is placed in the middle of the riser and located at the upper part of the oil cylinder type cavity; a plurality of chilling blocks are arranged in the sand box the on the outer ring of the II# core; and the casing system is communicated with the bottom edge of an oil cylinder flange of the oil cylinder type cavity. The chilling blocks surround the outer edge of the oil cylinder flange of the oil cylinder type cavity to form an annular structure. By means of the technical scheme, the problems of excessive processing margin, labor consumption and time consumption of secondary processing, increased cost, low yield and the like in the prior art are solved.

The invention discloses an optimized dampproof tea box which comprises a supporting base. A protection box is included, fixed sliding grooves are transversely formed in the positions, close to the front and back faces of the protection box, of the surface of the top of the protection box, supporting sliding blocks are in sliding connection to the surfaces of the fixed sliding grooves, protection covers are fixedly connected to the tops of the supporting sliding blocks, handles are fixedly connected to the middle portions of the surfaces of the tops of the protection covers, a discharging opening is formed in the center position of the surface of the bottom of the protection box, a dampproof buffer layer is arranged on the inner surface of the protection box, and the side, which is not in contact with the inner surface of the protection box, of the dampproof buffer layer is covered with coated paper. The optimized dampproof tea box relates to the technical field of tea storage equipment. The optimized dampproof tea box achieves the effective tea dampproof aim, material taking by opening the overall protection cover is not needed, large-area contact between tea in the box and the airin the material taking process is effectively avoided, dampproof pollution to the tea is effectively avoided, and the good quality of the tea is better guaranteed.

The invention discloses a pair of dual-layer temperature-adjustable warm winter trousers. The pair of dual-layer temperature-adjustable warm winter trousers comprises a heat preservation cloth layer,a second zipper, a denim layer, decorative cloth, an adjusting cloth belt and an adjusting block, wherein the second zipper is arranged on the upper part of the heat preservation cloth layer; the decorative cloth is arranged on one side of the denim layer; and the adjusting cloth belt is arranged on the middle part of the adjusting block. The pair of dual-layer temperature-adjustable warm winter trousers is scientific and reasonable in structure, and safe and convenient to use. A first zipper, the second zipper and a third zipper are arranged. Through opening of the three zippers, an inner gauze layer of the pair of winter trousers can isolate the external air and facilitate heat dissipation ofthe legs, thereby solving the problem of difficultiesin ventilation and heat dissipation of existing winter trousers in a warm room. The decorative cloth and a decorative pattern are arranged to cover the first zipper, thereby ensuring that a winter trousers body is still aesthetic after the first zipper is opened. The adjusting block and the adjusting cloth belt are arranged to adjust the length of a waistband, so that the waistband fits the waist of a user better, and the user feels comfortable.

The invention discloses building board pouring equipment. The building board pouring equipment comprises a conveying belt used for conveying plate frames; a lifting assembly slidably connected to a transverse guide rail; a pouring device mounted at the output end of the lifting assembly, wherein side transverse moving devices are mounted on the left side and the right side of the pouring device; two groups of lifting arms respectively mounted on the side transverse moving devices and driven by a rotating motor to rotate; and two sets of cleaning devices installed at the output ends of the lifting arms correspondingly.

The invention discloses a clinical sampling device for lung cancer tumors, which belongs to the technical field of medical apparatus and instruments, and comprises a sampling tube, the outer wall of sampling tube is provided with a fixed tube, the upper end of sampling tube is connected with a storage tube, and the sampling tube is internally and movably provided with a piston; clinical sampling device comprises at least two push rods, the lower ends of the push rods are connected with the upper end of the piston, the upper ends penetrate through the storage tube, and the penetrating parts are connected with push plates; a puncture tube is arranged in the sampling tube and a sealing tube at the same time, and the puncture tube is detachably connected with a connector; a plurality of gradient-shaped fracture openings are formed around the lower end wall of the puncture tube; a plurality of gradient-shaped detachable sampling openings are formed around the lower end wall of a puncture needle, and the position of each sampling opening corresponds to the position of a corresponding fracture opening; and a plurality of sampling devices are uniformly and detachably arranged on the storage tube. According to the invention, one-time multidirectional sampling can be realized, the influence caused by repeated sampling is avoided, the easy blockage in the sampling process is avoided, and the lung cancer sampling convenience is improved.

The invention discloses a liquid subpackaging device for clinical examination, which comprises a main body, a test tube and a filter screen. A hand wheel is arranged above the main body, and the right side of the hand wheel is connected with a first gear. An indented column is arranged below the right side of the gear, and the gear is tightly attached to the indented column. A rubber plate is fixed below the indented column, and the indented column and the rubber plate are bonded by glue. The test tube is installed in the main body, and soft plates are arranged on the left side and the right side of the test tube correspondingly. Springs are connected to the right sides of the soft plates, and the soft plates and the springs are connected by welding. A fixing plate is arranged below the springs, and the fixing plate and the main body are connected by welding. Scales are arranged on the outer surfaces of the soft plates. The filter screen is mounted below the test tube. The liquid subpackaging device for clinical examination is provided with the scales, so that a doctor can make a certain judgment by watching the scales when taking liquid in the test tube, and the doctor can take the liquid more accurately.

The invention discloses a pneumatically assisted resilient magnetic levitation self-protecting film-covered floor stopper. The pneumatically assisted resilient magnetic levitation self-protecting film-covered floor stopper comprises a mounting base plate; the bottom of the left side of the mounting base plate is fixedly connected to a suspending tongue lock mechanism; the bottom position of the suspending tongue lock mechanism is movably connected to a floor stopper pedestal; a clamping groove is formed at the top of the floor stopper pedestal and near one side of the suspending tongue lock mechanism; the middle position of the bottom of an inner cavity of the clamping groove is fixedly connected to a magnetic buffer mechanism; assembling magnetic blocks are arranged at the bottom of the inner cavity of the clamping groove and positioned on two sides of the magnetic buffer mechanism; and a springback mechanism is arranged on one side, away from the suspending tongue lock mechanism, ofthe top of the floor stopper pedestal. The invention relates to the technical field of hardware. When a door is opened and closed, different impact forces are buffered to different degrees, so that different degrees of mutual collision is avoided, the equipment safety is protected, the equipment is prevented from being jammed, the clamping groove is subjected to effective dust removal, dust accumulation is avoided, self-cleaning of the equipment is guaranteed, and blockage and abrasion of the equipment are avoided.

The invention provides an efficient laver drying device based on gas flow velocity negative pressure, which relates to the technical field of laver drying. The invention discloses the efficient laverdrying device based on gas flow velocity negative pressure, which comprises a drying furnace, an air inlet is fixedly connected to the periphery of the drying furnace, a heating resistance wire is wound in the outer wall of the drying furnace, a first through hole is formed in the inner side of the drying furnace, an air blowing pipe is fixedly connected to the center of the drying furnace, and asecond through hole is formed in the periphery of the air blowing pipe. The invention discloses the efficient laver drying device based on gas flow velocity negative pressure, the laver spreading efficiency is greatly improved, compared with the prior art, the laver spreading is more time-saving and labor-saving, loss of nutritional ingredients of laver is prevented, advanced coking of the upper surfaces of laver cakes due to high dehydration speed is avoided, flowing of gas in the drying furnace is guaranteed, the drying effect is improved, the moisture regaining phenomenon is avoided, the drying efficiency is improved, and laver in the drying furnace is heated more uniformly.

The invention discloses a lateral gas guide anode structure for aluminum electrolysis, which comprises an anode block (2) and a plurality of longitudinal gas guide holes (3) arranged on the anode block (2), wherein the tops of the longitudinal gas guide holes (3) are sealed; and the lateral part of the anode block (2) is provided with lateral vent holes (1) which are communicated with the longitudinal gas guide holes (3) and the outer part of the lateral wall of the anode block (2). According to the invention, the lateral gas guide anode structure for aluminum electrolysis can accelerate the gas escape at the bottom of the anode, avoid the direct contact of the gas and air, reduce the heat radiation of the gas, simultaneously prevent the gas from damaging an upper thermal insulation layer of the anode and indirectly reduce the heat radiation of the anode.

The invention discloses a vegetable oil filtering and separating device. The device comprises a main body, a vegetable oil collecting pipe and a supporting block, wherein a rotating motor is arranged above the main body, the right side of the rotating motor is connected with a first gear, a rack column is arranged below the right side of the gear, the gear is tightly attached to the rack column; a vegetable oil filtering plate is fixed to the lower portion of the rack column, the rack column and the vegetable oil filtering plate are bonded through glue, the vegetable oil collecting pipe is installed in the main body, supporting plates are arranged on the left side and the right side of the vegetable oil collecting pipe correspondingly, springs are connected to the right sides of the supporting plates, and the supporting plates and the springs are connected in a welded mode; fixed plates are arranged below the springs and are connected to the main body in a welded mode, a scale strip is arranged on the outer surface of each supporting plate, and the supporting block is installed below the vegetable oil collecting pipe. The vegetable oil filtering and separating device is provided with the scale strip.

The invention relates to the technical field of speed reducers, in particular to a speed reducer storing device which comprises a box. Pulleys are arranged on the bottom of the box. A plurality of fixing plates are arranged in the box. Fixing plates are horizontally fixed into the box in a welded manner and divide the box into a plurality of compartments. A base layer is arranged on each fixing plate. The surface of each fixing plate is provided with an idler wheel strip. Each base layer is arranged on the corresponding idler wheel strip. The surface of each base layer is provided with round holes. A base disc is arranged in each round hole. A pull ring is arranged at one end of each base layer. The pull rings are arranged on the outer side of the box. The other ends of the pull rings are fixed to the inner side of the box through fixing devices. The speed reducer storing device can store speed reducers in a separated manner, the situation that the speed reducers make direct contact with air is avoided, storage time of the speed reducers is prolonged, and moreover, the device also facilitates taking and batch transferring of the speed reducers and is convenient speed reducer storing equipment suitable for actual production.

The invention provides a butt joint transfer station wiring harness module device for automobile engine pedestal detection, which comprises a pallet truck butt joint assembly and a detection equipment butt joint assembly, an engine to be detected can be in butt joint with an ECU butt joint module in advance, simple and automatic butt joint is realized through a transfer station butt joint seat A and a transfer station butt joint seat B, and the butt joint transfer station wiring harness module device is convenient, rapid and high in efficiency. Assembly line detection of the engine is realized, and the detection efficiency of the engine is improved; when engines of different models are detected, only the ECU butt joint module needs to be replaced, the quick change function can be achieved, and the expansibility is high; the device is simple in structure and convenient to use, fills the blank of the domestic market, improves the detection efficiency and the detection accuracy of the existing wire harness detection equipment to a great extent, and has a very wide market application value.

The invention relates to a split coal dust removing device. The split coal dust removing device comprises a dust removing device body, grooves, dust collecting boxes, limiting blocks and limiting cushion blocks. Bottom feet are arranged on the left side and the right side of the bottom end of the dust removing device body. Split grooves are embedded in the dust removing device body. The inner walls of the split grooves are connected with rotation shafts. Knocking rods are arranged at the bottom ends of the rotation shafts. The bottom ends of the knocking rods are connected with hydraulic air cylinders. Split dust removing boxes are arranged on the inner sides of the knocking rods. The grooves are formed in the left sides and the right sides of the lower portions of the split dust removingboxes. Connecting blocks are arranged in the grooves. The dust collecting boxes are located below the split dust removing boxes. Observation ports are embedded in the outer surfaces of the dust collecting boxes. The limiting blocks are arranged at the right ends of the dust removing device body, and limiting bolts penetrate the limiting blocks. The split coal dust removing device has the beneficial effects that according to the split coal dust removing device, the six split dust removing boxes are arranged so that coal can be well isolated, and coal is subjected to separation and dust removal.

The invention discloses a capillary electronic cigarette atomizer. The capillary electronic cigarette atomizer comprises an oil storage bottle (7) and an oil guide tube (5), wherein a capillary tube (4) which penetrates through the outer wall of the oil storage bottle (7) and extends along the direction away from the oil storage bottle (7) longitudinally is arranged on the outer wall of the oil storage bottle (7), third oil conduction cotton (8) is accommodated inside the capillary tube (4), one end of the third oil conduction cotton (8) is in contact with cigarette oil inside the oil storagebottle (7), and an oil injection hole (10) is formed in the side wall of the oil storage bottle (7); the oil guide tube (5) is arranged at the end, away from the oil storage bottle (7), of the capillary tube (4), a spiral heating coil (2) is accommodated inside the oil guide tube (5), and second oil conduction cotton (9) is accommodated inside a spiral cavity of the heating coil (2). According tothe electronic cigarette atomizer disclosed by the invention, the cigarette oil inside the oil storage container can be prevented from being in contact with air, the volatilization and waste of the cigarette oil are reduced, the risk of oil leakage is reduced, and the heating coil further can be prevented from being burnt.

The invention discloses a high-brightness graphic composite substrate and a manufacturing method thereof. The high-brightness graphic composite substrate includes a sapphire flat plate on which a group of composite graphs are distributed. The composite graph includes a nanosphere reflecting layer and a SiO2 coating covering the surface of the nanosphere reflecting layer. The preparation method mainly includes the following steps: the nanosphere reflecting layer is formed on the sapphire flat plate; a layer of SiO2 coating is deposited on the nanosphere reflecting layer; a layer of positive photoresist coating is applied to the SiO2 coating, and exposure and development are carried out to selectively remove unnecessary parts to form gel columns; and ICP etching is carried out with the gel columns and the SiO2 coating as the barrier layer, and thus, the composite substrate is prepared. The composite substrate is formed through the sapphire flat plate, the nanospheres and the Si02, the nanospheres form a yurt-like microstructure in the composite graph, and as the nanospheres are made of metal, the light refraction can be effectively reduced, the light reflection efficiency is increased, and the brightness of an LED chip on the graphic sapphire substrate is thus improved.

The invention discloses a cooling tower corner upright column sealing device. The cooling tower corner upright column sealing device comprises a cooling tower body; reinforcing rib plates are fixedlymounted on the outer walls on the periphery of a cooling tower body and are distributed on the outer walls of the cooling tower body at equal distance; the outer walls at the bottom of the cooling tower body are connected with a bearing frame which is in rectangular distribution through bolts; uptight columns are fixedly mounted on the outer walls of the four corners of the bottom of the bearing frame; the outer walls of the bottom ends of the upright columns are welded with fixed piers; a concrete base which is in strip distribution is arranged below each fixed pier; the outer wall of each upright column is connected with a first protective sleeve in a sleeving manner; and the outer part of the bearing frame is connected with a second protective sleeve in a sleeving manner. According to the cooling tower corner upright column sealing device, a very good protection effect can be achieved on the upright columns and the bearing frame of metal structures, so that the upright columns and the bearing frame are not easily corroded by air and cooled materials; therefore, the service life of a tower corner upright column is prolonged; a cooling tower is supported and fixed reliably; and construction of people is facilitated.

The invention discloses a preparation method of a bubble micro-vibration facial mask, and belongs to the technical field of facial masks. Raw materials can be extracted from various natural plants, the raw materials, a nutrition formula and an auxiliary agent are mixed and processed to obtain essence, a bubble facial mask carrier is innovatively adopted for loading, a plurality of bumps are arranged aiming at acupuncture points on the face of a human body, and bubble generating balls are embedded in the bumps, so that when a user applies the facial mask, the facial mask can be translated above the face through a matched magnetic plate, the bubble generating balls are indirectly extruded through the repulsive action of a magnetic plate on repulsive magnetic blocks, gas in the bubble generating balls is forced to enter the essence to form bubbles, then, the bubbles are broken on the skin surface of a user to form tiny impact, meanwhile, a self-heating bag is in a contact reaction with air to release heat to heat the gas, mild heating is performed while flapping is formed on the face-to-face portion, so that absorption of the essence by the skin of the user is promoted, the skin care effect of the facial mask on the user is greatly improved, and waste of the essence is reduced.

An ROB stack (10′) contains a plurality of stacked ROB cells (10) made from: thin metal bipolar housings (13) having air inlets and exits and horizontal channels for feeding air between the inlets (16) and exits (17), the channel having top ridges and also grooves (25) for containing active material (34); a porous air electrode (21 / 39) next to the air channels allowing air contact; a metal electrode (36); and an oxygen ion transfer membrane (37) acting as electrolyte; wherein the plurality of all the assemblies form vertical air inlet and outlet plenums.