176results about How to "Does not take up extra space" patented technology

The present invention discloses a core body of a flat-plate heat exchanger for a fresh air ventilator, which comprises quadrangular plastic heat exchanging membranes, a top plate in the same shape asthat of the plastic heat exchanging membranes, a bottom plate and sealing strips. The upper surfaces on the near edges of two opposite edges of the plastic heat exchanging membranes with odd number are fixedly connected with the lower surfaces on the near edges of two opposite edges of the plastic heat exchanging membranes with even number through the sealing strips to form first airflow channels,the upper surface on the near edges of another two opposite edges of the plastic heat exchanging membranes with even number are fixedly connected with the lower surfaces on the near edges of two opposite edges of the other plastic heat exchanging membranes with odd number through the sealing strips to form second airflow channels crisscrossed with the adjacent first airflow channels, the top plate is fixedly connected with the uppermost plastic heat exchanging membranes through the sealing strips, and the bottom plate is fixedly connected with the lowermost plastic heat exchanging membranes through the sealing strip. The present invention has the advantages of favorable heat transfer performance, high heat exchanging efficiency, low weight and cost, simple structure, low production and running cost, convenient installation and easy integration with constructions.

The invention relates to a novel doubly-salient memory electrical machine comprising an outer rotor with tooth and an inner stator with tooth, wherein permanent magnets are arranged on the inner stator. The number of tooth Nr of the outer rotor, the number of tooth Ns of the inner stator and the number Np of the permanent magnets should satisfy the relational expression: (m+k1)*Np=Ns=mk2 and 360Nr / Ns=360k3+ / -alpha, wherein m is a phase number and is bigger than or equal to 3, alpha is a slot pitch angle the span of which is 0-360 degrees, k1 belongs to an integer from 1 to 1-m, and k2 and k3 are respectively a random positive integer. AlNiCo is adopted as the permanent magnets, and current pulses with different sizes and polarities are charged to a plurality of separated direct current windings to realize on-line magnetism charge demagnetization, thereby realizing multiple functions. Due to the fact that the duration of the current pulse is short, and the induced loss almost can be neglected, as an electromotor, the electrical machine can realize on-line magnetism modulation in the real sense while in running, and as a generator, the electrical machine can realize high-efficiency constant-voltage output while in running.

The invention relates to a medical body-building bed. The medical body-building bed is simple in structure, does not occupy the extra space in a ward, can facilitate the defecation of a patient and is suitable for rehabilitation training in the ward. The medical body-building bed comprises a rectangular bed frame, a backrest, a feces falling groove, a feces falling groove cover, a front cover plate and a walking machine component or a running machine component for building the body, wherein the backrest is arranged at the rear section of the bed frame and is suitable for being supported, the feces falling groove is arranged under the middle section of the bed frame; the feces falling groove cover is arranged above the feces falling groove; the front cover plate is arranged at the front section of the bed frame; and the walking machine component or the running machine component is arranged under the front cover plate. When the medical body-building bed is used, the feces falling groovecover and the front cover plate are opened, a user sits on the feces falling groove and the two legs of the user are positioned on pedals of the walking machine component or stepping rolls of the running machine component, so that a patient can relieve the bowels in a standard sitting posture, the comfort of the patient is improved, and simultaneously, the consumption of the corresponding physical strength is reduced; or when the medical body-building bed is used, only the front cover plate is opened, and the walking machine component or the running machine component can be used for building the body.

The invention discloses the selection method for decorating nail pattern, comprising the following steps: making many patterns display on the computer display screen, then using the selection frame to choose the picture which can be printed on the hands and nail; magnifying or shortening the shape and size of selection frame according to requirement. The invention can produce a large quantity of patterns which don't occupy the storage space, and the user can choose fast the pattern.

The invention relates to an ultralow-nitrogen gas burner. The ultralow-nitrogen gas burner comprises a first-stage gas header, a second-stage gas collecting ring, a furnace body, an igniter and an airflue with openings in the two ends, and the outlet of the air flue penetrates through a furnace wall of the furnace body to enter a hearth; the air flue at least comprises a central air flue, a primary air flue and a secondary air flue which are sequentially arranged from inside to outside in a sleeved mode, and the first-stage gas header and the second-stage gas collecting ring are connected with a fuel gas main pipe; the first-stage gas header is connected with a central spray gun and a plurality of first-stage gas spray guns, the first-stage gas spray guns are uniformly distributed on theperiphery of the central spray gun, and the central spray gun and the first-stage gas spray guns extend into the central air flue; the second-stage gas collecting ring is uniformly connected with a plurality of second-stage gas spray guns, and the second-stage gas spray guns extend into the secondary air flue; and the igniter is arranged in the central spray gun, and an ignition end of the igniterextends out of an outlet end of the central spray gun. According to the ultralow-nitrogen gas burner, a double-header and pipe group type supply mode is adopted, so that circumferential grading of the fuel is realized, air / gas mixing condition is improved, combustion balance is realized, and NOx generation is reduced.

The invention relates to the technical field of air conditioning equipment, in particular to a flooded evaporator oil return system and a water-cooled air conditioning unit adopting the flooded evaporator oil return system. The flooded evaporator oil return system comprises an oil and refrigerant mixed liquid recovery pipeline, a separated oil recovery pipeline and an oil and refrigerant separator; an inlet end of the oil and refrigerant mixed liquid recovery pipeline communicates with an oil return port of a flooded evaporator, an outlet end of the oil and refrigerant mixed liquid recovery pipeline communicates with the oil and refrigerant separator, and oil and refrigerant mixed liquid in the flooded evaporator is drained to the oil and refrigerant separator; the oil and refrigerant separator is arranged in the flooded evaporator and carries out separation of oil and a refrigerant by employing heat of chilled water; and the separated oil recovery pipeline communicates with the bottom of the oil and refrigerant separator, and drains separated oil to an oil tank or an air inlet of a compressor. With the adoption of the oil return mode, the oil return efficiency of the flooded evaporator is improved, a utilization ratio of the liquid-state refrigerant of the flooded evaporator is increased, and long-time oil return can be realized due to the fact that the oil and refrigerant mixed liquid dose not enter the compressor or the oil tank.

The invention belongs to the technical field of medical equipment, and provides a multifunctional wheelchair with a restoration function. The multifunctional wheelchair comprises a wheelchair frame, wherein driving wheels, steering wheels, a cushion, a backrest and hand push armrests are mounted on the wheelchair frame; a vertical rod is fixedly mounted on the wheelchair frame and arranged againstthe backrest, an elastic rod is detachably mounted at the top end of the vertical rod, and handles are mounted at two ends of the elastic rod; a cross rod is further fixedly mounted on the vertical rod, fixed rotating discs are correspondingly mounted at two ends of the cross rod, movable rotating discs are rotationally mounted on the fixed rotating discs, torsion springs are arranged between themovable rotating discs and the fixed rotating discs in a sleeving manner, and arm rods are fixedly mounted on the movable rotating discs. The wheelchair has various functions, a user conveniently exercises muscles and joints from upper limbs to lower limbs on the wheelchair while the transportation function for the physically disabled and the mobility disabled is achieved. Degradation of body functions can be effectively avoided by rehabilitation exercise, and the rehabilitation effect is greatly improved.

The invention discloses a back cover plate for a refrigerator. The back cover plate consists of at least two layers of plates, wherein a condensing pipeline is formed between two adjacent layers of plates. According to the back cover plate for the refrigerator provided by the invention, the condensing pipe is processed between at least two layers of plates forming the back cover plate, so that the back cover plate can be used as a condenser of the refrigerator and the condenser and the back cover plate form an integrated structure. Work procedures of independently mounting the condenser are reduced, so that the production rhythm of the refrigerator can be accelerated; and the condenser and a pipeline wall surface thereof are directly contacted with an external environment, so that a favorable heat-radiating effect is obtained. The invention further discloses the refrigerator with the condenser and a method for producing the back cover plate of the refrigerator.

The invention relates to an aiming device for a microscope for plasma diagnosis and a use method thereof. The aiming device comprises a line gatherer, a plane mirror, a luminous source, a glass plate and a grid plate. The line gatherer is connected with a short connecting pipe arranged on a vacuum pipeline through a flange piece, the plane mirror is arranged in the vacuum pipeline and connected with the line gatherer capable of driving the plane mirror to lead in and lead out, the grid plate is adhered to the glass plate, and the glass plate with the grid plate is arranged at one end of a long connecting pipe communicated with the vacuum pipeline and fixed through a flange cover. According to the method, a reverse imaging method is adopted, an image distance of an image system is first determined, and an object point is located through the microscope with small depth of field. Compared with the prior art, the aiming device and the use method of the aiming device have the advantages that a device structure is simple, a use method is easy, aiming precision is high, normal work of other diagnosis devices in a strong-laser device target cavity can not be affected and the like.

The invention discloses a low-turbulence compact circulating water tunnel experimental device, comprising a water tank (1), a centrifugal pump (7), and a porous plate (2) and a honeycomb screen (3) which are disposed in the water tank (1). The water tank (1) has a water inlet at the upper part and a water outlet at the lower part at the same side. The porous plate (2) is installed between the water inlet and the water outlet. The honeycomb screen (3) is installed at the water outlet, and has an outlet successively connected a contraction section (4), an experimental section (5) and an expansion section (6). The outlet of the expansion section (6) is connected to the inlet of the centrifugal pump (7). The outlet of the centrifugal pump (7) is successively connected with a backflow section(8), a round-to-square section (9) and a diverging section (10). The outlet of the diverging section (10) is connected to the water inlet of the water tank (1). The hydrodynamic design used by the invention greatly reduces the turbulence of a flow field in the experimental section. The whole experimental device has a compact structure, a small occupied space and low manufacturing cost, which greatly improves the applicability of the water tunnel experimental device.

The invention provides a laser gain module, which comprises a liquid cooling circulating device. The liquid cooling circulating device comprises: a main cooling pipe which penetrates through a module body and is used for accommodating and cooling a laser crystal rod, an assistant cooling pipe penetrating through the module body, and a first terminal and a second terminal which are coaxially arranged on two end faces of the module body, wherein the first terminal and the second terminal are internally provided with a first cavity and a second cavity respectively; the first cavity and the second cavity are communicated with a main cooling cavity formed by the main cooling pipe and an assistant cooling cavity formed by the assistant cooling pipe; the first cavity and the second cavity is internally provided with a barrel-shaped first buffer ring and a barrel-shaped second buffer ring respectively; the first buffer ring divides the first cavity into a cooling liquid input cavity and an input buffer cavity; through holes are evenly arranged on a barrel wall of the first buffer ring so as to enable the cooling liquid to be evenly injected into the inner side of the first buffer ring from the outer side of the first buffer ring; the second buffer ring divides the second cavity into a cooling liquid output cavity and an output buffer cavity; and through holes are evenly arranged on a barrel wall of the second buffer ring so as to enable the cooling liquid to be evenly injected into the inner side of the second buffer ring from the outer side of the second buffer ring. According to the invention, the liquid cooling radiating efficiency can be improved, and stable radiating laser output can be obtained simultaneously. In addition, the structure is simple, and an extra space is not occupied.

The invention discloses a linear motor primary part with an isolation cooling structure. The linear motor primary part comprises a machine body, an iron core, a winding, a front end cover, a cooling water inlet connector and a cooling water outlet connector, wherein the cooling water inlet connector and the cooling water outlet connector are arranged on the front end cover, a first cooling cavityis formed in one side of the machine body and communicates with the cooling water inlet connector, the machine body is provided with a back panel, a penetrating hole is formed in the back panel, the first cooling cavity communicates with the cooling water outlet connector via the penetrating hole, a plurality of first flow holes and a first waist-shaped hole are formed in the first cooling cavity,the first waist-shaped hole is near to an upper end of the first cooling cavity, a first cooling groove is formed in a part below the first cooling cavity, the first cooling groove communicates withthe first flow holes via the first cooling cavity, the first cooling cavity communicates with the first waist-shaped hole via the penetrating hole, and the first flow holes are lower than the first waist-shaped holes. A cooling structure is additionally arranged in a machine body under the condition that no extra device is additionally arranged, cooling pipeline layout is optimized, and the cooling effect is improved.

The invention discloses a kitchen air supplement method. Fresh air is independently introduced from outdoors and directly sent to the two sides of an extractor hood, and the fresh air is not mixed with airflow in other spaces; cooking hot smoke plume is effectively protected by controlling air supplement on the two sides of the extractor hood, and the efficient trapping performance of the extractor hood is guaranteed; the micro negative pressure of the kitchen space is maintained to reduce the dissipation of cooking oil fume to the kitchen space, and the oil fume trapping effect of the extractor hood is improved; the air supplement speed is controlled to be 0.5 m / s or below; and the air supplement amount is controlled to be 50%-80% of the air exhaust amount. The introduced outdoor low-temperature fresh air is heated to avoid condensation in pipelines, and the damage of the outdoor low-temperature fresh air to the kitchen thermal environment is relieved. The invention further disclosesa kitchen air supplement system for realizing the method. According to the kitchen air supplement method and system, kitchen air supplement is organized, the problem that cooking oil fume escapes anddiffuses due to unorganized kitchen air supplementation is solved, and the trapping efficiency of the extractor hood is improved; and meanwhile, the air quality of a human body breathing area and thethermal comfort of cookers are improved.

The invention relates to the field of air purification of workshops, and especially relates to a water filtering and dust absorbing device for flour mills. The water filtering and dust absorbing device comprises a shell, a blower fan, a controller, and a filter box. The device has the advantages that dusts can be effectively removed; air leakage will not happen, the dedusting efficiency is high; the electrostatic problem in the prior art is avoided, the happening rate of dust explosion is reduced; the occupied space is small, and the device is easy to install and maintain.

The invention discloses a rapid and automatic unfolding and folding protective cover. A sectional type radar protection frame automatic unfolding and folding device comprises a vehicle carrying platform, a lower rocker, a lower connecting rod, a long connecting rod support, a turnover oil cylinder, the protective cover, a folding oil cylinder, a long connecting rod, an upper rocker and an upper connecting rod, wherein the protective cover comprises a vertical plate, an oblique plate and a horizontal plate, the protective cover is of a symmetrical structure on the two sides, the lower rocker, the lower connecting rod, the vertical plate and the vehicle carrying platform form a four-bar linkage mechanism, the long connecting rod support, the vertical plate, the oblique plate and the long connecting rod form a four-bar linkage mechanism, and the oblique plate, the horizontal plate, the upper rocker and the upper connecting rod form a four-bar linkage mechanism. According to the device, camouflage and protection integrated design is adopted, the protective cover has a camouflage function, camouflage tarpaulin does not need to be additionally arranged, fast erection and retraction are achieved, full-automatic operation is achieved, the full-automatic operation is achieved by hydraulic driving, so that manpower is saved.

The invention discloses a multifunctional movable book shelf for libraries. The multifunctional movable book shelf comprises a base and a plurality of layers of book shelf units. The base is of a cylindrical structure, and a first connection member is arranged at the top of the base. The book shelf units sleeve the first connection member, and each book shelf unit comprises a second connection member, a telescopic sleeve, a holding plate and a third connection member. The second connection members sleeve the first connection member, and the telescopic sleeves are connected to the second connection members. Electric push rods are arranged at the inner bottoms of the telescopic sleeves, and the tops of the electric push rods are connected with the inner tops of the telescopic sleeves. The circular holding plates are arranged on the outer lower sides of the telescopic sleeves rotationally. A plurality of drawable, turnable and vertical stop plates are distributed in each holding plate evenly. Switches used for controlling the electric push rods are arranged on the edges of the holding plates. The third connection members same as the first connection member in structure are connected to the tops of the telescopic sleeves. The multifunctional movable book shelf has the advantages of simple structure, convenience in use, capability of storing and displaying books and making adjustment according to the books, high space utilization rate and high functionality.

The invention discloses a pump turning direction hydraulically-started reversible water turbine. The pump turning direction hydraulically-started reversible water turbine comprises a ring pipe, telescopic joints, a top cover, a main shaft, a seat ring, a movable guide vane, a tail water pipe and a runner. The ring pipe is connected with a needle valve operation device. The top cover is provided with a water guiding chamber. The runner is provided with a main runner channel and an auxiliary runner channel. The water inlet end of a needle valve communicates with a pressure steel pipe behind a unit water inlet valve. The water outlet end of the needle valve is connected with the ring pipe. The ring pipe is connected with the multiple telescopic joints. The telescopic joints communicate with the water guiding chamber on the top cover. An outlet of the water guiding chamber corresponds to an opening in the outer edge of the auxiliary runner channel. An opening in the inner side of the auxiliary runner channel communicates with the tail water pipe. The inner side of the seat ring communicates with the movable guide vane. The inner side of the movable guide vane corresponds to an opening in the outer edge of the main runner channel. An opening in the inner side of the main runner channel communicates with the tail water pipe. The main shaft is connected with the runner to transmit torque. Pump turning direction starting does not impact on a power grid and does not generate harmonic sources, operation is easy, extra space is not occupied, components prone to damage do not exist, and safety and reliability are achieved.

The invention discloses an embedded fault oscillograph suitable for DC control protection system. The fault oscillograph comprises a programmable logic controller, a microprocessor, a differential communication chip, a fault determining assembly and a first chip; the programmable logic controller is in communication connection with external equipment via the differential communication chip, obtains wave recording data of the external equipment via the differential communication chip, and writes the wave recording data into the first chip; the fault determining assembly determines whether thereis a fault in the external equipment, and if YES, a time point of the fault is determined; the programmable logic controller obtains wave recording data in the fault time point and within preset timebefore and after the fault time point via the first chip and further obtains the fault wave recording data, and the fault wave recording data is sent to the microprocessor; and the microprocessor generates a fault wave recording file according to the fault wave recording data. The fault oscillograph is high in integrate degree, reduces the equipment cost, and meets the light and compact trend forsecond equipment of the power system.

The invention provides a rapid-heat-storage high-strength phase change energy storage composite structural member and a preparation process thereof, and relates to the technical field of materials, inparticular to a composite structural member. The rapid-heat-storage high-strength phase change energy storage composite structural member consists of a metal framework, a heat-conduction sealant, a phase change energy storage structural member and a screw fixing device. The metal framework not only has a main structure supporting effect, but also can rapidly absorb heat of a heat source and an environment and uniformly dissipate the heat to the metal framework; by the heat-conduction sealant, rigid contact between the phase change energy storage structural member and the metal framework can be eliminated, and the heat absorbed by the metal framework is rapidly conducted to the phase change energy storage structural member; and density of resin and phase change material microcapsules in the phase change energy storage structural member is small, and thus, the rapid-heat-storage high-strength phase change energy storage composite structural member has the advantages of the excellent mechanical property, high heat storage capacity, high heat storage speed, light weight, small thickness and the like.

The invention discloses a hook with double hook bodies and a suspension bracket, wherein the hook with the double hook bodies comprises two hook bodies and two penetrating parts for penetrating suspension holes on a suspension wall during a use process; one ends of the two penetrating parts extend along vertical direction and form two hook arms; the two hook bodies are respectively connected with one of the hook arms; and the other ends of the two penetrating parts are integrally connected through a connecting rod. After the hook with the double hook bodies provided by the invention is fixed on the suspension holes of the suspension wall, the hook does not rotate and move; the connection is firm; and meanwhile, the whole hook is integrally formed, without welding; besides, the hook can be suspended in different positions of the suspension wall according to requirements by only arranging the suspension holes in the different positions of the suspension wall; the use is flexible; and the hook bodies can be arranged on any side of the suspension wall according to the requirements, so that the spaces on the two sides of the suspension wall both can be utilized and the hook is suitable for different use occasions.

The invention provides a platform automatic leveling device for a 3D printing machine. The platform automatic leveling device comprises a platform lower plate and a platform, wherein the platform is arranged above a platform lower plate; four telescopic rod step motors are arranged on the platform lower plate and are correspondingly arranged in the four corner positions of the platform; telescopicrods of the telescopic rod step motors are in contact with the lower surface of the platform; a guide hole is formed in one side of each telescopic step motor arranged on the platform lower plate; aguide rod in gap matching with the guide hole is arranged in the guide hole; the top end of the guide rod is fixedly connected with the platform; a spring for pushing the guide rod to downwards move sleeves the guide rod; a microswitch installing hole is respectively formed in a position of each of four corners of the platform; a micro contact switch is arranged in the microswitch installing hole;the upper end of a touch rod of the micro touch switch is aligned with the upper surface of the platform; each micro touch switch controls the corresponding telescopic rod step motor through one circuit board. The platform automatic leveling device has the advantages that the structure is simple; the platform of the printing machine is subjected to automatic leveling; the model printing precisionis improved.

The invention discloses a household water tank type fruit and vegetable cleaner and relates to the technical field of household cleaning equipment. The cleaner comprises a cleaning tank, wherein a housing is arranged on the outer side of a side wall and the bottom of the cleaning tank in a surrounding manner; a case is formed between the housing and the cleaning tank; the cleaning tank comprises a cleaning mechanism arranged on the side wall and a placement mechanism arranged in an inner cavity; the cleaning mechanism comprises a first spray head; the placement mechanism comprises a cleaning basket; a rotating mechanism for rotating the cleaning basket is arranged at the bottom of the cleaning basket. The cleaner can be directly mounted in a water tank and form an integral structure with the water tank, serves as a household appliance to automatically clean fruits and vegetables, is thorough in cleaning and convenient to operate and does not occupy an additional space.

The invention relates to a luggage case, in particular to a portable antiskid luggage case comprising a box body and a pull rod. The pull rod is mounted on the box body; an anti-skid device is furtherincluded, the anti-skid device comprises a driving piece, a transmission piece and a locking piece. The driving piece is movably installed on the pull rod, and the transmission piece is connected with the driving piece and the locking piece; a moving piece is installed at the bottom of the box body; the driving piece drives the locking piece to move through the transmission piece; and the moved locking piece interferes with the stroke of the moving piece. The anti-skid luggage case has the advantages that the operation position is arranged on the pull rod, the antiskid luggage case conforms to the operation position when a human body stands upright and is easy to operate; the antiskid luggage case is simple in structure and easy and efficient in transmission; the whole structure is hiddenat the bottom of the box body, and extra space of the box body is not occupied.

The invention discloses an oil and gas pipeline non-stop transmission on-line desanding device and aims to overcome the defects that in the prior art, installation is complicated, and the separation effect is poor. The desanding device comprises a desanding device inlet, a desanding device outlet, a desanding device cylinder, a columnar cylinder, a helical blade, rotation-stopping fan-shaped plates, sand discharging outlets and full-bore ball valves, wherein the columnar cylinder is in the desanding device cylinder, the columnar cylinder is coaxial to the desanding device cylinder body, the helical blade is located in an annular space between the desanding device cylinder and the columnar cylinder to form a helical flow channel, the rotation-stopping fan-shaped plates are in the desandingdevice cylinder, the sand discharging outlets are formed in the lower side of the desanding device cylinder in a row, and the sand discharging outlets run through the full-bore ball valves and sand inlets in sequence to be communicated with a sand storage chamber. By means of the oil and gas pipeline non-stop transmission on-line desanding device, the installation way of the desanding device is identical to that of a common valve, the desanding device can be horizontally or vertically installed and occupies little space, auxiliary facilities are not needed, the separation efficiency is high, solid impurities in oil and gas can be efficiently separated out, and normal pipeline transportation is not affected in the sand cleaning process.

The invention discloses a fish way inlet dispersed water feeding system arrangement method with a bottom stilling pool. The arrangement method comprises the following steps: a water feeding pipe is arranged from an upstream reservoir for leading water near a fish way inlet through a steel pipe; a water feeding stilling pool is excavated at the bottom of a rectangular channel section in the fish way inlet; the water is leaded to the stilling pool by the water feeding pipe; and the fed water overflows from the top after energy dissipation to feed the fish way inlet to meet fish inducing demands.The arrangement method has the following advantages: the overall place space is not additionally occupied; the traditional centralized water feeding and dispersed water feeding advantages are both achieved, so that the inlet water flowing speed is accelerated, and the influence on upstream fishes is lower; and a water feeding force dissipation system is simple in structure arrangement, and can beproperly adjusted according to specific engineering.

The invention relates to the technical field of furniture, and discloses a zero-space-occupation bathroom cabinet assembly comprising a cabinet body, a tap, and a mirror. The tap and the mirror are arranged on a wall. The cabinet body is arranged in the wall body with a drawing manner. The tap and the mirror are arranged on the wall, such that space is saved. The cabinet is drawn out when in used, and can be hidden in the wall body after use with a simple push, such that the purpose of zero space occupation is achieved. The bathroom cabinet assembly provided by the invention has the advantages of simple structure, easy assembly, and convenient application. The assembly is especially suitable to be used in a narrow bathroom, and does not occupy additional room in the bathroom.