85results about How to "Deep" patented technology

The invention relates to aluminum silicate glass. The toughness of the ultrathin glass is increased by adopting an ion exchange chemical reinforcing method in a subsequent process. The aluminum silicate glass comprises the following components in percentage by weight: 55 to 70 percent of SiO2, 10 to 20 percent of Al2O3, 8 to 25 percent of at least one alkali metal oxide and the balance of additive, wherein ions of chemical reinforcing ion exchange are from alkali metal ions in the alkali metal oxide. After ion exchange chemical reinforcing, the surface pressure value of the aluminum silicate glass can reach over 700MPa, and the depth of the pressure stress layer can reach over 50 microns, so cracks on the surface of the glass can be totally covered, and the safety of the glass in application is greatly promoted. The invention also relates to a method for preparing the aluminum silicate glass.

The invention discloses a laser peening composite rolling strengthening surface modification method and device. The device comprises a control system, a movable platform, a hydraulic system, a rolling system, a laser and a light path system. According to the device and the method, the hydraulic system is controlled through a computer so as to enable a transparent rolling wheel to roll the surface of a workpiece with a preset load so that the surface of the workpiece can get initial deformation, meanwhile, a light path adjusting system controls the light emitting direction of a short pulse laser beam with the high-peak power density so as to enable the laser beam to vertically irradiate the surface of the workpiece pasted with an aluminum foil through the transparent rolling wheel, an instantaneous plasma shock wave is induced to act on a surface material so as to generate plastic deformation with ultrahigh strain rate, and therefore laser peening and rolling composite strengthening of the workpiece can be achieved. The device and the method have the advantages that the gain effects of laser peening and rolling strengthening can be seamlessly combined, and meanwhile, good surface quality and uniform residual stress distribution can be ensured.

The invention discloses a saucer structure capable of carrying out self-adjustment in depth. The saucer structure comprises a saucer body, a cup placement space is arranged on the saucer body, the saucer body is provided with a cup hole corresponding to the cup in shape, a saucer base is arranged in the cup hole, the hole wall of the cup hole is in vertical sliding fit with the saucer base, the saucer base and the hole wall of the cup hole can be limited in a matching mode, and the saucer base and the cup hole form the cup placement space. Through the matching structure of the saucer base and the cup hole, the saucer can be arranged on a thin armrest or a narrow space, so that large saucer depth can be obtained. When the saucer is not used, existing functions of the armrest are not affected. When the saucer is used, the depth of the saucer can be expanded conveniently, and the placement requirements of cups with different lengths can be met.

The invention provides a scheduling method to prevent conflicts in intelligent RFID read system. The method utilize the mechanism that reader controls multiple antennas, which is: all the antennas are controlled by the reader in order; the reader polls the antennas connected to the reader, and control the interactive between the single antenna and label; each time only one antenna can be activated to respond instructions from the reader; every two antenna effective covered regions are connected to reduce the overlap. The invention uses multiple antennas, at any time only one antenna takes effect, and then labels are divided into groups to recognize. The number of labels in the coverage covered by one antenna is reduced, thus the probability of conflicts is effectively reduced.

The invention provides a pipe-jacking working well applicable to desert waterless sand area and a construction method. The pipe-jacking working well is characterized in that a plurality of bore pilesare circumferentially uniformly arranged around the circle center the working well to form the main protecting and stress structure of the working well, a crown beam is arranged at the top of each bored pile, each circular crown beam and the working well are of a concentric circle structure, a liner is located on the inner side of each bored pile and vertically arranged along the depth direction of the working well, hidden beams are embedded into each liner and arranged at intervals along the length direction of the liner from top to bottom, a bottom plate is located at the bottom of the working well, a well bottom reinforcing jet grouting pile is arranged below the bottom plate, and hole reinforcing jet grouting piles located at positions where jacking pipe joints enter and exit holes arearranged on the outer sides of the bored piles. The pipe-jacking working well has the advantages that soil stability during excavation can be guaranteed by the bored piles, and the bored piles can bear large counter force needed by pipe-jacking construction; the liners can increase sand stability among the piles and evenly transmits horizontal load to the bored piles.

The invention relates to a method and system for studying and judging high-risk criminal personnel. The method comprises the following steps: step 1, generating a depth feature set of high-risk criminal personnel according to obtained personnel characteristics; step 2, performing preprocessing and dimensionality reduction on the depth feature set to obtain key features; step 3, establishing a studying and judging model of the high-risk criminal personnel through the key features; step 4, optimizing the studying and judging model in the step 3; and step 5, studying and judging the target personnel through the optimized studying and judging model to judge whether the target personnel is the high-risk criminal personnel. By adoption of the method, the feature set of the high-risk criminal personnel is automatically inferred and synthesized to enhance the representation depth of the high-risk characteristics of the personnel, and a targeted modeling method is adopted for different crime types to achieve accurate studying and judging.

The invention relates to a lithium-supplementing porous silicon monoxide negative electrode material for lithium ion batteries and a preparation method thereof, and belongs to the technical field of preparation of lithium ion battery materials. The lithium-supplementing porous silicon monoxide negative electrode material is characterized in that the lithium-supplementing porous silicon monoxide negative electrode material is of a core-shell structure, porous silicon monoxide serves as an inner core, a nitrogen-doped carbon material serves as a shell, and the thickness of the shell is 50-500 nm. The lithium-supplementing porous silicon monoxide negative electrode material has the advantages that a carbon layer is uniformly deposited on the surface of the porous silicon monoxide, so that theporous silicon monoxide is prevented from directly contacting with the electrolyte, the occurrence probability of side reactions is reduced, and the electric conductivity is improved; meanwhile, by adopting the nitrogen-doped carbon material, the electric conductivity of a cladding layer can be further improved, and accordingly, the rate performance in lithium-supplementing porous silicon-carboncompounding is improved.

The invention discloses a method for improving the continuous cropping soil of panax notoginseng, which comprises the following steps: (1) installing a drip irrigation device; (2) fumigating and disinfecting soil with dazomet; (3) disinfecting soil with chlorine dioxide; and (4) adding a compound microbial fertilizer. As a fumigant for the continuous cropping soil of panax notoginseng, dazomet cankill fungi, bacteria, insects and other organisms in the soil and is low-toxicity and safe. Chlorine dioxide can kill bacterial propagules, bacterial spores, fungi, mycobacteria and viruses, and bacteria will not develop resistance to chlorine dioxide. The compound microbial fertilizer can improve the yield of panax notoginseng, improve the quality of panax notoginseng, reduce the use of chemicalfertilizer, lower the cost, improve the soil and protect the ecological environment. By using the method, the seedling emergence rate of panax notoginseng seeds in the continuous cropping soil can bemore than 95%, the seedling survival rate can be more than 90%, and the disease incidence can be reduced.

The invention relates to a northern winter big tree transplanting method and belongs to the technical field of plant planting and cultivation. The northern winter big tree transplanting method comprises the following steps of selecting trees, digging, bundling, transporting, planting, carrying out maintenance management and the like. Aiming at the conditions that the temperature in winter of northern areas is low and transplanted big trees are difficult to live through the winter, transplanted nursery-grown plants are treated by adopting a tool in the steps of selecting the trees, digging, bundling, transporting, planting, and carrying out the maintenance management after the planting; the soil digging speed is rapid, the degree is deep and the digging power is great in a digging process; meanwhile, a digging ball is scientific and beautiful, and the transplanting survival rate of the transplanted big trees in winter can be guaranteed.

The invention discloses a dense neural network lung tumor image recognition method fusing multi-scale features, and the method comprises the steps: collecting and preprocessing CT modal medical images, extracting lesion ROI regions of different scales, and forming a multi-scale data set; wherein the focus ROI regions of different scales are provided with clinically marked benign or malignant tumortags; training the multi-scale data set in a dense neural network, constructing a dense neural network model, extracting a full connection layer feature vector and carrying out feature serial fusion;and obtaining a lung tumor classification result in the NSCR classifier. A dense neural network model constructed by the method is superior to an AlexNet model, bottom-layer new features can be minedagain by effectively utilizing high-layer information, transmission of the features among networks is enhanced, and feature reuse is realized and enhanced; the invention is deep in network depth, strong in network generalization capability and high in lung tumor classification accuracy.

The invention relates to a compound reinforcement method for a gear surface. The compound reinforcement method comprises the following steps: firstly, the gear surface is subjected to shot blasting with steel shots with particle size being 0.6-1 mm; then molybdenum disulfide is mixed with particles with particle size being 0.05-0.1 mm, the mixture is used for performing shot blasting continuously on a gear, and the gear with compound reinforced surface is obtained. By means of the coupled effect of two processes including powerful shot blasting and molybdenum disulfide and particle mixed shot blasting, amplitude of tooth surface compressive stress deeper than the stress in single surface treatment process is obtained, and tooth surface hardness is improved substantially. Meanwhile, the lubricity of the gear surface is improved, the friction coefficient of the tooth surface is reduced, the lubricating capacity and the surface smoothness are improved, and gear meshing vibration noise is reduced. The effect of prolonging both the flexible life and contact fatigue life of the gear simultaneously is realized. The method adopts simple process and flexible conditions, can realize batch production and has good application prospect.

The invention provides a method and device for improving hardness of the inner wall of a steel tube. A scanning type induction hardening process is adopted, heat treatment is carried out on the inner wall of the whole steel tube, an induction coil is placed on the steel tube, and the steel tube rotates and relatively moves relative to the induction coil; in the process that the steel tube and the induction coil relatively move, the induction coil is powered on to heat, and the heated steel tube is instantly subject to water spraying cooling after heating; the heating frequency is selected to range from 500 Hz to 2000 Hz; and the speed of movement of the steel tube relative to the induction coil is between 3 mm / s and 6 mm / s, and the rotating speed of the steel tube ranges from 5 rpm to 20 rpm. Compared with a conventional manner that heat treatment is carried out on the steel tube or the steel tube is not treated, the skin effect of induction heating is used, in the heating process, the temperature of the inner wall of the steel tune is high, the temperature of the outer wall is low, and a temperature gradient is formed; after water spraying cooling is carried out, the aim of improving the hardness and the abrasive resistance of the inner wall is achieved; and meanwhile the outer wall basically keeps mechanical properties of toughness, strength and the like of an original matrix structure.

The invention provides a laser shot blast-rolling reinforcement compound device of a rotary body and a method thereof. The laser shot blast-rolling reinforcement compound device comprises a laser emitting device, a light path conveying device, a numerical control platform and a rolling head; the laser emitting device is used for generating laser beams; one end of the light path conveying device isused for inputting the laser beams, the other end of the light path conveying device is provided with the rolling head, and the rolling head is in contact with the rotary body and used for carrying out rolling reinforcement on the surface of the rotary body while the laser beams are enabled to penetrate through the rolling head so as to perform laser shot blast on the surface of the rotary body;the rotary body is fixed by the numerical control platform through a first rotating device; and the numerical control platform is used for fixing the light path conveying device through a second rotating device, which is used for enabling the rolling head to rotate around the rotary body. According to the laser shot blast-rolling reinforcement compound device of the rotary body and the method thereof, a pressure spring in the rolling head is adjusted to obtain the required rolling load, a laser is guided through the light path system, automatic focusing of the laser shot blast process is realized, and compound surface reinforcement of a complex curved surface can be accurately realized.

The invention provides a urine sampling device for urology departments. The urine sampling device comprises a flow guide cup, a sampling tube, a flow distribution device and a support portion. A largeoblique opening is formed in the upper portion of the flow guide cup, urine can flow into the large oblique opening, a collecting tube is arranged on the lower portion of the flow guide cup, an oblique flow guide tube is arranged on a side of the collecting tube, an elastic rubber membrane which is positioned on the lower end of a communication opening of the oblique guide tube and the collectingtube is arranged inside the collecting tube, and the sampling tube is arranged on the lower portion of the collecting tube; a [-shaped handle is arranged on the right side wall of the flow guide cup,the flow distribution device comprises a communication head, a push rod, a guide rod, a sleeve and a return spring, the communication head is positioned in the collecting tube, and the support portion is used for stably supporting the flow guide cup. The urine sampling device has the advantages that the urine sampling device is convenient to operate in acquisition procedures when used for acquiring the urine, and is clean and hygienic, and midstream urine can be acquired by the urine sampling device in a high-quality manner.

The invention discloses a paving structure and a paving method for quickly recovering functions of a pavement and a bridge floor. The paving structure comprises a double-layer fiber-added macadam seal layer and an ultrathin antiskid wearing layer from the bottom up, wherein the double-layer fiber-added macadam seal layer comprises a lower binder layer, a chopped fiber layer and an upper binder layer from the bottom up. According to the paving structure and the paving method for quickly recovering the functions of the pavement and the bridge floor, compared with the prior art, on the basis that the original paving is made full use of, gap graded aggregate is adopted to achieve water proofing of the pavement, prevent water from damaging the pavement, and exert the functions of water shutoff and drainage simultaneously; and the paving structure is high in construction efficiency, and can reduce the interference of the traditional construction manner to traffic.

The invention provides a refrigerator capable of dissipating heat from bottom. The refrigerator comprises a refrigerator body, condenser, a compressor, a convection fan and a wind shielding strip, wherein a compressor bin is arranged on the rear side of the bottom of the refrigerator body, and the compressor bin is in communication with the space below the refrigerator body through an air inlet and an air outlet which are transversely arranged at the bottom of the refrigerator body side by side; the condenser and the compressor are transversely arranged in the pressing machine bin side by side; the convection fan is arranged in the compressor bin and is located between the condenser and the compressor so as to promote air to be blown from the condenser to the compressor; the front-back extending wind shielding strip is arranged on the bottom surface of the refrigerator body and is positioned between the air inlet and the air outlet, so that when the refrigerator is placed on a supporting surface, the wind shielding strip can transversely divide the space between the bottom surface of the refrigerator body and the supporting surface, the external air is allowed to enter the compressor bin from one side of the wind shielding strip through the air inlet, the condenser is cooled, then the air is blown to the compressor through the convection fan, and finally the air flows out of the air outlet to the other side of the wind shielding strip; and the wind shielding strip is configured to rotate around an axis extending forwards and backwards, so that the distance between the bottom end of the wind shielding strip and the bottom surface of the refrigerator body can be adjusted according to the concave-convex degree of the supporting surface, and therefore the bottom end of thewind shielding strip can be attached to the supporting surface.

The invention discloses a plasma surface treating device for an anti-abrasion tamping pick for a railway and a using method thereof, and relates to a surface treatment device and a using method thereof. The problems of complicated technology for treating the surface of the anti-abrasion tamping pick for the railway and the difficulty in guaranteeing the performance are solved. The device consists of a cooling water channel, an argon-nitrogen mixture gas channel, a high temperature resistance ceramic element, a tamping pick head reservation port, a high temperature resistance sealing piece, a vacuum pump air extraction channel, a detachable stainless steel plasma generator entity and a reaction chamber. The using method comprises the following steps of: 1, putting the tamping pick into the reaction chamber, sealing and vacuumizing the chamber; 2, filling argon and nitrogen into the reaction chamber, applying square negative pulse voltage to ionize argon and nitrogen mixed gas, and forming nitrogen-containing high temperature plasmas; and 3, hitting the surface of the tamping pick to form a modified layer, namely finishing surface treatment for the tamping pick. The device and the using method thereof are applied to the field of surface processing.

The invention discloses a self-traveling type intelligent continuous dynamic compactor which comprises a crawler excavator, a crawler excavator power system, a crawler excavator self-traveling mechanism and a compaction mechanism, wherein the crawler excavator power system comprises an oil tank, an oil pump, a heat dissipater and an engine; the crawler excavator self-traveling mechanism comprises a traveling frame, traveling wheels, a traveling crawler and a self-traveling control system; the compaction mechanism comprises a stander, a third oil cylinder, a movable pulley, a soft connection body, a fixed pulley and a rammer; a stander is connected with a supporting wheel and is provided with a compaction density detection system; a hydraulic system and an intelligent control system are arranged on the crawler excavator; a third connection plate is connected to the stander; one end of a connection arm is connected with the crawler excavator, and the other end of the connection arm is connected with the third connection plate. The self-traveling type intelligent continuous dynamic compactor is easy to use and operate, has a self-traveling function and can intelligently realize continuous compaction; furthermore, the compaction power is higher, and the compaction thickness and the compaction influence depth are large; the self-traveling type intelligent continuous dynamic compactor can accurately detect the compaction density and work stably and reliably.

The invention relates to a sewage aeration tank foam identification method based on GoogLeNet-SVM. The method comprises the following steps: S1, obtaining a picture of an aeration tank; s2, obtainingan expanded sample based on the picture; s3, based on the sample and the openCV library, obtaining a sample with a unified size; s4, obtaining a training set and a test set based on the samples with the unified size; s5, constructing a sewage aeration tank foam recognition model based on the training set, the test set, the GoogLeNet and the SVM; and S6, based on the sewage aeration tank foam identification model, carrying out sewage aeration tank foam identification. Compared with the prior art, the method has the advantages that the foam recognition result can be obtained only by inputting the picture of the aeration tank to be detected, manual participation is not needed, the labor cost of an enterprise is reduced, the influence on the health of workers is avoided, and meanwhile the accuracy is higher.

The embodiment of the invention discloses an information processing method, which is applied to a quality detection process of a display screen of electronic equipment, and comprises the following steps: obtaining image processing parameters of N black and white image acquisition equipment, wherein the N image processing parameters are different from one another, and N is an integer greater than or equal to 3; based on the N image processing parameters, obtaining display information of the to-be-detected display screen, and obtaining N first images, wherein the N first images are black and white images corresponding to N images of different color channels displayed by the to-be-detected display screen; and processing the N first images to obtain defect information of the to-be-detected display screen. The invention further discloses an information processing system and a computer storage medium. According to the invention, the problem of low precision or insufficient color defect detection capability when a black-and-white camera or a color camera is used for detecting the defect information of the display screen in the prior art is solved.

The invention discloses a deep-layer high-hardness composite surface quenching reinforcing method of metal and alloy members and belongs to the field of surface heat treatment. The method comprises the steps: firstly, obtaining an induction quenched hardened layer with a depth of 2 to 20mm, a grain size of 7 to 10 levels and a hardness value of 45 to 62HRC on the surface of a part through induction heating pre-quenching; then utilizing machining to make the part reach an assembling accuracy and a finish degree required by the surface; finally, utilizing high energy beam surface phase change quenching to obtain a high energy beam quenched hardened layer with a depth of 0.1 to 2.5mm, a grain size of 10 to 16 levels and a hardness value of 62HRC on the surface of the part. The obtained composite hardened layer disclosed by the invention is prepared from the induction quenched hardened layer on the secondary surface layer and the high energy beam quenched hardened layer on the surface layer; thus, surface wear resistance and fatigue life of the metal and alloy materials are improved, and a strict requirement of the modern industry on the metal and alloy materials is met.

The invention provides a refrigerator which comprises a tank, a condenser, a compressor, a convection fan, and a windshield strip extending front and back. A pressing machine cabin is arranged on theback side of the bottom part of the tank and communicates with an external space under the tank through an air inlet and an air outlet located in the bottom part of the tank and horizontally arrangedside by side; the condenser and the compressor are horizontally arranged in the pressing machine cabin side by side; the convection fan is arranged in the pressing machine cabin, is located between the condenser and the compressor, and is used for promoting air to blow to the compressor from the condenser part; and the windshield strip can be arranged in a sliding chute extending front and back arranged on the bottom surface of the tank in a front-and-back push-and-pull way, and is located between the air inlet and the air outlet, so that when the refrigerator is placed on a support surface, aspace between the bottom surface of the tank and the support surface is horizontally separated, and external air is allowed to enter the pressing machine cabin from one side of the windshield strip through the air inlet, firstly cools the condenser, is blown to the compressor through the action of the convection fan, and is finally discharged from the air outlet to the other side of the windshield strip.

The invention discloses a method for manufacturing a low-reflectivity pattern sapphire substrate. The method includes the steps that a mask material grows on a sapphire substrate; photoetching is carried out on the mask material to obtain a mask with a periodical size pattern; wet etching is carried out on the sapphire substrate to acquire pits with certain depths; dry etching is carried out on the sapphire substrate till the mask shrinks completely; surface cleaning is carried out. According to the method for manufacturing the low-reflectivity pattern sapphire substrate by combining the dry method and the wet method, wet etching is carried out on the sapphire substrate first under the condition that the mask is not consumed, then, dry etching is carried out on the sapphire substrate, the utilization ratio of the mask is greatly improved, the periodic pattern formed through the method can be deeper than a pattern in the same period, and therefore the purpose of low reflectivity is achieved.

The invention discloses a preparation method adopting low-temperature boronizing for a wear-resistant surface of nodular cast iron. The preparation method comprises the following steps: firstly, pretreating the nodular cast iron, then preparing a powder boronizing agent and a sealing material, then carrying out boronizing treatment, and finally, carrying out boronizing aftertreatment, so that thehigh-hardness boronized surface is obtained, wherein the step of carrying out boronizing treatment comprises the following substeps: carrying out pre-boronizing treatment on an iron container so thatthe iron container can serve as a boronizing tank, namely, filling the iron container with the boronizing agent, carrying out compacting, carrying out sealing, carrying out heating to 950 DEG C, keeping the temperature for 6 hours, and carrying out cooling; filling the boronizing tank subjected to pre-boronizing treatment with the uniformly mixed boronizing agent, burying the pretreated nodular cast iron sample in the boronizing agent, filling the whole tank with the boronizing agent, compacting the boronizing agent, and finally, sealing the box with the prepared sealing material; and heatingthe sealed container to 200-400 DEG C and keeping the temperature for 1-2 h, wherein the boronizing time is controlled to be 1-24 h. While the boronizing temperature is reduced, a boronized layer which is large in thickness and is uniform can be obtained, and then the microhardness and wear resistance of the nodular cast iron are effectively improved.

The invention relates to a multi-stage irregular flight anti-intercept missile and its working method, belonging to the field of aircraft, including a primary booster, a secondary booster and a missile head, a primary booster, a secondary booster and a missile head. The size of the warhead is the same, its transition is smooth, it has multi-stage boosters, the cruising distance is long, and the flight trajectory is irregular, the flight trajectory is difficult to predict, and the attack speed is fast, which greatly increases the difficulty of being intercepted. At the same time, the structure is simple and firm, and the cost is low. It is cheap, and at the same time, it can improve our country's national defense strength, prevent invaders, and protect national sovereignty.

The invention relates to the technical field of quenching processes, in particular to an integrated quenching process of a drawn cup needle roller bearing, which comprises the following steps: curling: assembling a needle roller, a drawn cup which is not treated by any heat treatment and a holder into a whole and then curling; quenching: carrying out the C-N joint infiltration quenching of the drawn cup needle roller bearing which is qualified by inspection after assembling and curling; and tempering: tempering the drawn cup needle roller bearing at high temperature. The quenching step achieves 0.08mm-0.28mm effective hardened layer with the surface hardness of 750-980HV, and the tempering step increase the surface hardness to 664-856HV. The integrated quenching process ensures that the surface hardness of the drawn cup is uniformly distributed, the effective hardened layer of heat treatment carburization is deeper, the wear resistance of the drawn cup is good, and the high-temperaturetempering process eliminates the brittleness of the drawn cup and the holder, thereby prolonging the service life of the bearing.

The invention discloses a double-protection ring and a forming method thereof. The forming method of the double-protection ring comprises the following steps: providing a P-type substrate; forming a P-type first protection ring in the P-type substrate; forming an N-type second protection ring in the P-type substrate, wherein the N-type second protection ring surrounds the P-type first protection ring, and the second protection ring comprises an N-type first well region and an N-type second well region with the depth larger than that of the N-type first well region. According to the invention,the double-protection ring can better reduce the winding noise of the substrate, and inhibit the latch-up effect.

The invention discloses an embedded type net-cage culture system. The system includes a breeding floating platform, a first net cage body and a second net cage body, wherein the breeding floating platform is floated on the sea surface, the first net cage body is arranged under the breeding floating platform, and the second net cage body is fixed on the periphery of the breeding floating platform.The first net cage body is arranged in a second accommodating space of the breeding floating platform through a sliding component in a lifting and sliding mode, and ascending and descending of the netcage bodies are adjusted through a balancing weight on the breeding floating platform. The embedded type net-cage culture system is simple in structure and easy to use, according to the need, rapid and stable lift control of the first net cage body is achieved so as to meet the requirements of deep-sea fish breeding, the descending depth can be adjusted, and the second net cage body is arranged at the water surface elevation which is flushed with the breeding floating platform so as to meet the requirements of shallow-sea fish breeding. Applied electric energy is obtained through conversion of clean solar energy, an external power line is not needed, the system does not consume excessive electric energy of other sources, and the environment is protected.

The invention provides a refrigerator. The refrigerator comprises a refrigerator body, wherein a compressor bin is arranged on the rear side of the bottom of the refrigerator body, the compressor bincommunicates with external space below the refrigerator body through an air inlet and an air outlet which are transversely arranged at the bottom of the refrigerator body side by side, and a condenserand a compressor are transversely arranged in the compressor bin side by side; a convection fan is arranged in the compressor bin and is positioned between the condenser and the compressor, and is used for promoting air to be blown from the condenser to the compressor; and an air shielding strip extending forwards and backwards is arranged under the refrigerator body and is positioned between theair inlet and the air outlet so as to transversely space the refrigerator body and a supporting surface when the refrigerator is placed on the supporting surface for allowing external air to enter the compressor bin from one side of the air shielding strip through the air inlet, the external air is used for firstly cooling the condenser, then is blown to the compressor through the effect of the convection fan, and finally flows out of the air outlet to the other side of the air shielding strip. When the refrigerator is embedded in a cabinet, the condenser and the compressor can be effectivelycooled, and the air shielding strip is convenient to disassemble and assemble, and therefore is convenient to maintain or replace.