69 results about "Ice core" patented technology

PCT No. PCT / IE97 / 00002 Sec. 371 Date Jul. 10, 1998 Sec. 102(e) Date Jul. 10, 1998 PCT Filed Jan. 10, 1997 PCT Pub. No. WO97 / 25483 PCT Pub. Date Jul. 17, 1997An ice composite body has an inner ice core covered by a protective outer armor layer. Thermal insulation is provided between the inner core and the outer armor layer. Refrigeration is accomplished by a system of conduits for refrigerant are located within the body. The insulation and the refrigeration are adapted to maintain the ice core in a frozen condition relative to the ambient temperature. The base of the body cavity can be in direct contact with the water bed such that the ice core is freeze bonded to an advancing ice front in the water bed. The ice composite body provides structures of equal or greater strength than equivalent structures using conventional materials.

The invention discloses a hot water core drill used at a glacier. The hot water core drill comprises a plunger pump, a two-way pipe, a heat insulation pipe, an ice core pipe, a drill bit and a flower divider, wherein the plunger pump is arranged in a pump storage pipe, the upper end of the plunger pump is connected with a water outlet pipe, the lower end of the plunger pump is connected with a water absorption pipe, the two-way pipe is connected to the lower end of the pump storage pipe, the lower end of the two-way pipe is connected with the heat insulation pipe, the ice core pipe is inserted in the heat insulation pipe, the drill bit is arranged below the heat insulation pipe and the ice core pipe, the flow divider is arranged on the lower portion of the two-way pipe and at the top end of the ice core pipe, the top end of the flow divider is connected with a hot water injection pipe, the lower portion of the flow divider is connected with a plurality of drainage pipes which are arranged in a gap between the heat insulation pipe and the ice core pipe, and hot water injected by the hot water injection pipe at the top end of the flow divider is injected into the drainage pipes through the flow divider. The hot water core drill has the advantages that due to the fact that the hot-melting drill bit is adopted for tapping and drilling of the hot water drill, and molten water is extracted to serve as a raw material of the hot water drill, cost is reduced, and the energy utilization rate is increased.

The invention discloses an early identification method for burst of an ice lake without ice core in a moraine dyke, which is characterized in that the method comprises the following steps: a, judgingwhether a moraine lake without ice core exists in a moraine dyke; b, determining the basic parameters of the moraine lake without ice core through Google Earth; c, calculating a comprehensive discrimination factor T for early identification of the moraine lake without ice core; and d. judging the risk of the moraine lake without ice core according to the comprehensive discrimination factor T for early identification of the moraine lake without ice core. The invention studies the burst mechanism of the moraine lake without ice core in the moraine dyke by analyzing various influence factors, makes comprehensive judgment, establishes an early identification calculation model for burst of the moraine lake without ice core, accurately identifies the dangerous moraine lake without ice core in early stage in a quantitative manner, and greatly improves the accuracy of judgment.

The invention discloses a risk judgment method for an outburst of an ice core-free moraine dam ice lake. The method is characterized by comprising the following steps of a, judging an ice core-free moraine lake in a moraine dam; b, determining a basic parameter of the ice core-free moraine lake through Google Earth; c, calculating a risk comprehensive discrimination factor G of the ice core-free moraine lake; and d, grading a risk level of the ice core-free moraine lake by satisfying the basic conditions that alpha is greater than 8 degrees, R is greater than 0.1 and V is greater than 0.75 incombination with the risk comprehensive discrimination factor G of the ice core-free moraine lake, the greater G value, the higher the risk is, and otherwise, the smaller G value, the lower the risk is. According to the risk judgment method for the outburst of an ice core-free moraine dam ice lake, an internal mechanism study is performed by analysis of each influence factor for an ice lake outburst generation process, an ice core-free moraine lake outburst risk calculation model is established, the risk level of the outburst of the ice core-free moraine lake is precisely graded in a quantitative manner, the judgment accuracy is guaranteed and the control effect is beneficially improved.

An ice-making device for a refrigerator and method for controlling the same, which is designed to separate ice through a simple process. The ice-making device for a refrigerator includes an ice tray (146) defining an ice-making space, an ice core member that is partly received in the ice-making space to make ice at an end thereof, a driving unit moving and rotating at least one of the ice tray and the ice core member, and a power transmission unit for transferring power from the driving unit to the ice core member. The ice on the ice core member starts being separated in a state where the ice is spaced apart from an outer surface of the ice tray.

The invention discloses a casting method of a core of a casting mould, comprising the following steps of: firstly assembling and sealing the casting mould, injecting liquid (water) from an inlet, and then placing a sealing plug containing a water discharge guide pipe into a water injection opening; secondly placing the casting mould at a sealing environment with specified cooling and heat-preserving effects and relatively closed conditions so that water is coagulated and formed into an ice body at the closed environment, and then taking an obtained ice core out of the casting mould and placing the ice core into a specified environment for storage and later use; finally assembling the ice core into the casting mould, injecting waxes, cooling, and melting the core so as to obtain a wax mould with a needed cavity. According to the casting method disclosed by the invention, environmental pollution is eliminated; a production period is shortened; resource waste is prevented; a field work environment is improved; the problems of wax saponification is solved; and the stability of casting quality is enhanced.

The invention discloses a precision casting mould making technology by using an ice core. The technology is as follows: firstly, manufacturing an ice core with a required size and shape by a method using a specific mould to condense water; secondly, taking out the obtained ice core from the mould, and putting the ice core into an appointed environment to store for later use; during mould making, installing the ice core into the mould, injecting wax, cooling, and fusing a mold core to obtain a wax mould, wherein, during wax injecting, the wax injecting temperature and pressure are regulated to realize rapid mold filling, so that surface cold shut caused by chilling can be avoided and size deviation caused by mold core fusing can be reduced; and finally, casting an obtained mould casing by using different casing coating technologies. By using the technology disclosed by the invention, the environmental pollution is eliminated, the production cycle is shortened, the resource waste is avoided, the on-site work environment is improved, the problems caused by chilling and mold core fusion are solved, and the stability of cast quality is enhanced.

The invention discloses an air reverse circulation for a polar region ice layer. The system comprises an air compressor, an air circulating pipeline, an air reverse circulation double-pipe drilling tool and an ice flake and core collecting device. The air compressor is connected with an air inlet pipe of the air circulating pipeline, the air compressor provides circulating air with pressure for the air circulating pipeline, the air reverse circulation double-pipe drilling tool is assembled at the lower end of the air circulating pipeline, and the ice flake and core collecting device is connected to an outlet of the air circulating pipeline and used for collecting ice flakes and cores drilled out by the air reverse circulation double-pipe drilling tool. The system has the advantages that the whole system is compact, light, easy to operate, high in reliability, high in drilling speed, short in auxiliary time and suitable for coring or comprehensive drilling in the polar environment.

The invention relates to a weather rainfall planting catalyst device. A planting catalyst generating device is formed by utilizing heating power and motive power of a turbojet engine. In a catalyst storage floating tank combined Venturi tube feed system, aerosol which is conveyed to components of in each region of an engine to be heated, burned, gasified and fumed and internal combustion gas flow are ejected into a cumuliform cloud, an airplane is utilized to flexibly, rapidly and accurately achieve field operation in the air, multiple catalysts are sowed in large area, a sowing scientific experiment is executed, performances of a new product are verified, achievement is quickly obtained, the problem that the cumuliform cloud is difficult to naturally generate an ice core in arid region can be solved, and the situation of vicious cyclic drought is changed. China has inexhaustible turbojet engines, and the fact that a retired machine can realize 'civil-military integration' is an exceptional advantage to implement the device provided by the invention.

The invention discloses a vortex tube type heat preservation sampling drilling tool which comprises a double-wall drilling rod, a heat-insulation heat preservation layer, a coring barrel, a vortex tube, an upper rolling bearing, a lower rolling bearing, a hot-melt drilling bit and a spiral blade. The heat-insulation heat preservation layer is arranged on the inner wall of the double-wall drilling rod in a clinging manner, the coring barrel is arranged inside the heat-insulation heat preservation layer, the spiral blade is coaxially arranged on the outer side of the coring barrel, and a cold air spiral channel is formed between the heat-insulation heat preservation layer, the coring barrel and the spiral blade; the vortex tube is arranged at the upper end of the double-wall drilling rod. The vortex tube type heat preservation sampling drilling tool has the advantages that the vortex tube type heat preservation sampling drilling rod is simple in process, high in acquisition efficiency for rock core samples of ice cores and natural gas hydrate in plateau frozen soil districts and low in disturbance on primary statues of the ice cores and the natural gas hydrate; outstanding effects can be realized during coring and drilling; air is used as power, accordingly, the vortex tube type heat preservation sampling drilling tool is free of pollution, additional external mechanical torque can be omitted, the service life and the reliability of the vortex tube type heat preservation sampling drilling tool can be guaranteed, the problem of insufficient water resources in the plateau frozen soil districts can be solved, and the integral cost performance of the vortex tube type heat preservation sampling drilling tool can be greatly improved.

The invention discloses a hot-water core drilling method and a device for a polar region ice layer. The device comprises a hot-water pipe, a cable, a cable terminal, a bottom-contacting detecting mechanism, a water distribution connector, an upper reverse-twisting device, an electric chamber, a lower reverse-twisting device, a screw motor, a lower-portion double-pipe drilling tool and a drill bit. The method comprises the steps that hot water is utilized to serve as power medium to drive a hole-bottom drilling tool to rotate to complete core drilling, the hot water is transported to the hole-bottom drilling tool by adopting a pipeline, meanwhile, the cable is utilized to supply power to sensors and a communication module in the drilling tool, and it is achieved that the earth surface monitors the drilling parameters in a hole; the ice-layer cutting drill bit drills downwards though rotary cutting, the influence of full hole drilling of the hot-water drill on the ice core quality is avoided, and meanwhile flake ice generated by cutting is taken away by the hot water from a hole bottom, and is melted in the process of being transported upwards; reverse-twisting devices are designed above the drilling tool to prevent an upper-portion drilling tool from rotating when the drill bit cutting the ice layer, and meanwhile the reverse-twisting devices are supported on the hole wall, so that stable drilling of the drilling tool under a small inclination is ensured.

A gas turbine engine is defined wherein the inlet guide vanes leading into a core engine flow path are sized and positioned such that flow paths positioned circumferentially intermediate the vane are sufficiently large that a hydraulic diameter of greater than or equal to about 1.5 is achieved. This will likely reduce the detrimental effect of icing.

The invention discloses an air reverse circulation continuous coring ice drill bit. A drill bit body of the air reverse circulation continuous coring ice drill bit is in threaded connection with a double-walled connector external pipe of a double-walled connector. A plurality of cutting tool bits are fixed to the bottom lip surface of the drill bit body through bolts. The front corner of each cutting tool bit inclines towards a drill bit central channel by an inclination angle alpha of 5-15 degrees. A cushion shoe is connected with the cutting tool bits and the drill bit body through bolts. A support spraying tube is connected with the drill bit body through threads. An ice core breaking device is fixed to a step inside the drill bit body. The support spraying tube and a double-walled connector internal pipe form a circular seam gap. The double-walled connector external pipe and the double-walled connector internal pipe form an annular space, and a supporting block is arranged between the double-walled connector external pipe and the double-walled connector internal pipe. A fairing is connected with the double-walled connector external pipe through threads. The fairing and the outer wall of the drill bit body form an annular spray nozzle. A plurality of gas inlet holes are formed in the double-walled connector external pipe. According to the air reverse circulation continuous coring ice drill bit, the drilling efficiency is improved, the ice core recovery rate is increased, accordingly the construction period of polar region drilling projects is greatly shortened, and the risk of complex accidents in a hole is lowered.

The invention discloses an ice-shelf-bottom uphole coring system and method based on an underwater robot. The coring system comprises the underwater robot, a coring drilling tool, a water tank, a boiler and a control system, wherein the coring drilling tool is assembled on a shell at the upper portion of the underwater robot, the water tank, and boiler and the control system are arranged in an inner cavity of the underwater robot, the water tank is communicated with the boiler through a water pipe, and water used by the boiler is input by the water tank. The coring method includes the steps that 1, the underwater robot is put into water to work; 2, uphole drilling work from bottom to top is carried out; 3, the underwater robot is controlled to return to the sea level. The ice-shelf-bottomuphole coring system and method based on the underwater robot has the advantages that the technical scheme is unique in design, the theory is clear, a traditional coring drilling method from top to bottom is broken through, coring can be carried out in the interface between ice-shelf-ice-core-researching critical regions-ice shelf bottom and the sea, the whole ice shelf does not need to be drilled, and wasting of manpower and material resources is greatly reduced.

The invention relates to an ice-core solid direct current conductivity measurement system and solves the problem of low ice-core conductivity detection accuracy. The ice-core solid direct current conductivity measurement system comprises a working platform, a control unit, a drive unit, a detection unit for measuring movement displacement of the drive unit, a high-voltage circuit and a probe, wherein the probe is arranged on the drive unit and is connected with the high-voltage circuit; the high-voltage circuit is connected with the control unit; after the high-voltage circuit is electrified and an ice core is fixed to the working platform, the drive unit drives the probe to slide along the surface of the ice core, thereby enabling the control unit to calculate the conductivity of different positions of the ice core according to the detection unit.

An ice composite body (10) has an inner ice core (11) and a protective outer armour shell (12). The outer armour shell (12) consists of a base section (13), side sections (14) and a separate top section (15), which is free to move vertically between the side sections (14). The inner ice core (11) is maintained in a frozen condition in use by refrigeration pipes (21), which are located at various levels therethrough. The inner ice core (11) is built up from thin layers of ice which are frozen one after the other. Following the freezing of each layer of ice the layer is rolled using a roller apparatus which provides a roller pressure in the range of 3.5 to 8 Newtons / mm<2>. The ice composite body (10) can be used in warm or cool waters for applications such as bridges, breakwaters, causeways, pontoons, artificial islands, dams, tidal barrages, wave power barrages, harbour walls, wind power farms or aircraft runways.

The invention discloses a device for detecting the dielectric property of an ice core while drilling in combination with a polar-air core-drilling type rotary jetting drill bit. An upper connector ofthe device is connected with an ice core pipe; the upper connector is provided with an upper bearing block; an upper thrust ball bearing is embedded in the upper bearing block; a bearing baffle ring is arranged at the lower end of the upper thrust ball bearing; a lower thrust ball bearing is arranged on a lower bearing block; a drill bit body is connected with the bearing baffle ring; the drill bit body and the bearing baffle ring can rotate synchronously; an ice core centralizer is arranged in the ice core pipe; the ice core pipe is provided with a wire through hole, a low-position electrode,a middle annular gap, a high-position electrode and a protective electrode; the wall of the drill bit body is provided with a gas flow guide bump, an ice core clamping and breaking device, a high-pressure air flow guide hole and a bottom-lip-surface air flow guide hole; a tool bit is fixed at the bottom of the drill bit body. The device can detect the dielectric property of the ice core while drilling, and combination with high-pressure air rotary jet drilling avoids the influence of liquid on measurement accuracy. The drill bit body acts independently, and the upper connector, the ice core pipe and the like do not rotate, so that the stability of the drilling tool is improved.

The invention discloses a combustible ice core sample storage device and relates to the technical field of combustible ice storage. According to the combustible ice core sample storage device, the problems that in the prior art, combustible ice cannot be preserved or is short in preservation time, and the situation that the combustible ice is subjected to temperature control and accordingly various properties of the combustible ice are researched cannot be achieved are solved. The combustible ice core sample storage device comprises a storage tank and a sealing cover. A boss is arranged on thelower portion of the sealing cover; plug pins are arranged on the lower portion of the boss, and plug holes are formed in the upper portion of the storage tank; the sealing cover is of a hollow structure and internally provided with a battery pack and a CCS which are connected; and the storage tank comprises an outer barrel and an inner barrel, and a semiconductor flexible refrigerating belt is arranged between the inner barrel and the outer barrel. The structure is simple, operation is convenient and rapid, combustible ice samples are stored effectively, the various states of the combustibleice samples are preserved, and scientific analyzing of the combustible ice samples is guaranteed.

A gas turbine engine is defined wherein the inlet guide vanes leading into a core engine flow path are sized and positioned such that flow paths positioned circumferentially intermediate the vane are sufficiently large that a hydraulic diameter of greater than or equal to about 1.5 is achieved. This will likely reduce the detrimental effect of icing.

The invention discloses an auxiliary heating drilling type freezing core-taking drilling tool and relates to the field of polar ice layer core taking and frozen soil core taking. The auxiliary heating drilling type freezing core-taking drilling tool is composed of a power source module, an auxiliary heating drilling freezing core-taking module and a regular drilling tool module. The power source module is used for supplying power to a semiconductor chilling plate of the auxiliary heating drilling freezing core-taking module, a hot source and a cold source are generated, the hot source heats drilling fluid for auxiliary drilling to enable an ice core to rapidly enter a rock core cylinder, and the cold source is used for refrigerating the rock core cylinder to ensure the ice core not to be melted in the rock core cylinder in the well drilling and drill lifting process and ensure core-taking integrity. The auxiliary heating drilling type freezing core-taking drilling tool is simple in structure and easy to produce and maintain; repeated utilization can be achieved, and using cost is low; through switching of the different modules, core-taking efficiency is improved and ensured; and only the heating effect is exerted on the annular section of a broken rock, environmental pollution is avoided, the natural state of a rock core can be kept to a largest extent, and the auxiliary heating drilling type freezing core-taking drilling tool has obvious effects on core taking under special conditions and rock core preservation.

The invention relates to an ice core borehole opening protection device. The ice core borehole opening protection device is structurally characterized in that the peripheral edges of a trough plate are bent downwards, and the trough plate is of a rectangular box-shaped structure and covers an ice core borehole; holes are formed in the four corners of the trough plate, and steel chisels pass through the holes to fix the trough plate to the glacier surface; a steel ring is fixed to the center of the trough plate and is opposite to the center of the borehole; a cap covers the steel ring; and a hole and a notch are formed in the cap, and when an ice core is drilled, a cable connected with a drill bit is placed in the hole through the notch. The structure is simple, the design is reasonable, blocking of the ice core borehole, damage to an ice core drilling machine and jamming of the ice core drilling machine due to the fact that tools fall into the ice core borehole in the ice core drillingprocess can be avoided effectively, it is guaranteed that ice core drilling work is conducted smoothly, and waste of manpower and material resources is reduced.

The invention relates to an ice core treatment cutting device. V-shaped groove bases are vertically fixed on a substrate at the bottom. Two V-shaped grooves are respectively erected and fixed on the two V-shaped groove bases at the bottom. A gap between the two V-shaped grooves and the two V-shaped groove bases at the bottom is a cutting seam for ice core cutting. The lower part of the cutting seam aligns at the upper part of the substrate. The upper edges of the two sides of the V-shaped grooves are used as scaleplates. Back parts of two sides of the two independent V-shaped grooves are respectively provided with LED board lamps. A disc cutting machine is fixed to one side of the V-shaped grooves. A cutting sheet is located above the cutting seam. An ice core is arranged in the V-shaped grooves. The device has a reasonable design and a compact structure, can accurately describe the physical parameters of the ice core during the pretreatment and accurately and vertically cut the ice core along a radial direction, effectively solves the problem of the easy dislocation of the ice core in the radial cutting and achieves the accuracy of ice core dating and high-resolution ice core recording and research.

The invention discloses an ice core cutting device which comprises a base and a cutting frame. A workbench is arranged on the upper surface of the base, the workbench is used for carrying an ice core,the workbench is in sliding fit with the base, the workbench is used for sliding back and forth on the base, and the cutting frame is arranged across the base. A transverse cutting line is arranged on the cutting frame, the cutting line is perpendicular to the sliding direction of the workbench, the two ends of the cutting line are in sliding fit with the cutting frame, and the cutting line is used for moving up and down on the cutting frame. When the ice core cutting device is used, the ice core can be placed on the workbench, the height of the cutting line is adjusted to be below the highest point of the ice core, then the workbench is moved to enable the ice core to make contact with the cutting line, and transverse cutting of the ice core from one end of the ice core can be achieved.

The invention discloses an airborne rapid ice core activation counter which comprises a chamber, a refrigeration device, a sample introduction device, a closed circulation gas flow device and a laserion phase detection counter. The sample introduction device is arranged in a sample introduction control box, the closed circulation gas flow device is arranged in an airflow control box, the sample introduction control box, the airflow control box, the laser ion phase detection counter and the chamber are arranged at an upper left of a rear part of a rack, and the front part of the rack is provided with a refrigeration device, a power supply box and a computer control box from the bottom to top. The airborne rapid ice core activation counter is a miniaturized fast ice core activation countersuitable for airborne observation, the process from ice core generation to activation in an actual operation can be simulated, and the airborne rapid ice core activation counter has the advantages oflarge flow rate, short measurement period, the distinction of solid ice crystals, the measurement of ice crystal spectrum distribution, and ice crystal imaging.

The invention relates to a portable field ice core observation device. The portable field ice core observation device is structurally characterized in that a light box and an ice core groove form a sealed body; the upper end face of the light box is provided with the ice core groove which is a semi-circular concave object, the two sides of the ice core groove are provided with rulers, one end of the ice core groove is a sealed end, and the end face of the sealed end of the ice core groove is flush with zero graduation lines of the rulers; light bases on the inner side wall of the light box are provided with light tubes, the two ends of each light tube are connected with a power supply through power lines, the two ends of a switch are connected with the light bases through power lines, a bottom plate of the light box is provided with a telescopic bushing support, and bushings are fixed through knob locks. The portable field ice core observation device is reasonable in design, compact in structure, light and convenient to use, facilitates field transportation and quick assembly, can meet the requirements of field on-site ice core description work, can effectively and accurately describe and record physical parameters and physical information of an ice core, and provides the most primitive, reliable and basic scientific data for later ice core recoding and research.

The invention discloses a method for collecting and processing an ice core optical characteristic image. The method comprises the following steps: shooting a plurality of ice core photos; carrying outimage splicing on the plurality of ice core photos; and carrying out an optical analysis on the spliced panoramic ice core image. The method is characterized in that the step of carrying out image splicing is performed as follows: carrying out image preprocessing; to be specific, carrying out non-linear stretching on the ice core photos by using a histogram equalization method and allocating a pixel value again; carrying out image matched region positioning; to be specific, determining an overlapped region between each two photos and carrying out feature point extraction and registration; carrying out image feature extraction; to be specific, carrying out corner detection by using a FAST function; carrying out image feature matching; to be specific, using an Euclidean distance between twofeature point descriptors as a similarity criterion for feature point matching; and carrying out image fusion; to be specific, carrying out smooth image transition by means of weighted average fusionand then carrying out seamless splicing. According to the invention, in order to solve a problem of a few of ice core feature points, the method employs an improved image splicing method and thus anice core panorama is synthesized efficiently and rapidly.

The invention discloses an ice core drilling device. The ice core drilling device comprises an ice core barrel, a drilling mechanism and a control center, wherein the drilling mechanism is fixed on the bottom end side surface of the ice core barrel and comprises a drilling mechanism body, an electric heating wire and a heating head, the heating head is in sealing communication with the bottom end of the drilling mechanism body through multiple electric joints; the drilling mechanism body is circular and hollow inside, a sealing cover is arranged at the top of the drilling mechanism body, the heating head is annular, has an inverted-triangular section and is hollow inside, the inside of the connection position of the drilling mechanism body and the heating head is wound with the electric heating wire, and the electric heating wire and the electric joints are electrically connected with the control center. An ice core is sampled in an electric heating form, damage of mechanical drilling to the ice core is avoided, and the smoothness and the flatness of an ice core sample can be guaranteed; the direction of a drilling head is adjusted by means of the arranged electric joints, the section in preset depth is heated, and the ice core sample and an original ice layer are conveniently separated.

The invention relates to a mobile hybrid cloud chamber capable of continuously providing supercooled fog, comprising: a cloud chamber cavity with a thermal insulation layer, a temperature sensing element and a cooling system inside; There is a refrigerant interlayer in between, in which there are evaporation tubes of the refrigeration system, electric heaters and temperature sensing elements; there is a supercooling slit between the cloud chamber tube and the jacket layer, from the bottom of the supercooling slit to the outer wall of the cloud chamber cavity A mist pipe runs through it, and a liquid discharge port is opened at the bottom of the refrigerant interlayer, and a sewage pipe is connected to the bottom of the cloud chamber to penetrate into the heat insulation layer, and the sewage pipes are respectively passed out of the cloud chamber through a tee; installed in the cloud chamber Ice crystal receiving device; cover a transparent cover plate on the top of the cloud chamber cavity, open a sample injection port and socket on the cover plate, and set a rotatable handle, the shaft end of which is fixed under the heat capacity plate . The device can realize the continuous or intermittent supply of supercooled mist, so as to ensure that the activation of ice nuclei and the growth of ice crystals injected into the cloud chamber have sufficient water vapor supply all the time.

The invention provides a refrigerating fan which is not required to be fixedly installed, the power consumption of the refrigerating fan is lower than that of a traditional fan, and the refrigeratingeffect is better. The refrigerating fan comprises a water storage tank and a refrigeration box arranged above the water storage tank, an ice core net film is arranged in the refrigeration box, an airinlet is formed in the box body at the rear end of the refrigeration box, an air outlet is formed in the box body at the front end of the refrigeration box, and a fan is arranged on the air outlet; the top end of the refrigeration box, an ice box is arranged right above the ice core net film; a water suction pump is arranged in the water storage tank, the water pumping pump conveys the water intothe ice box through a water conveying pipe, and a spraying opening is formed in the bottom of the ice box. Further, a filter screen is arranged on the air inlet.