107results about How to "Speed up convection" patented technology

The invention discloses a hardware part cleaning machine. The hardware part cleaning machine comprises a cleaning box and a drying box; a first cover plate is arranged on an inlet at the top of the cleaning box; a first dirt removing pipe is arranged on one side surface of the cleaning box; a waveform net cylinder is movably mounted in the cleaning box through a first rotating shaft, and is provided with a net cover; a first chassis is arranged on one side surface of the cleaning box; a first driving motor is arranged in the first chassis; and a first rotating shaft on one side of the waveform net cylinder is fixedly connected with a second rotating shaft of a first driving motor through a coupling. The hardware part cleaning machine can dry hardware parts after cleaning, is convenient for operation, excellent in cleaning effect, high in reliability, high in operation efficiency and simple in structure, can achieve better cleaning adaptability to various hardware parts, reduces the labor intensity, saves the labor cost, and improves the cleaning effect; and the drying box is unique in internal structure, reasonable in layout, simple and practical, can perform quick drying, and is high in working efficiency.

The invention discloses a low-voltage electrical cabinet with the function of circulating heat dissipation, which comprises a cabinet body, a partition board is fixedly installed in the cabinet body, the partition board includes a horizontal plate, and the top and bottom of the horizontal plate are respectively fixedly connected with The first vertical plate and the second vertical plate, the horizontal plate and the first vertical plate are provided with air holes arranged equidistantly, the bottom of the cabinet is provided with a base, and a cooling chamber is provided in the base, and cooling Condensation pipes arranged at equal distances are arranged in the room, air delivery holes and exhaust holes are respectively arranged on the base, and fans are arranged at the bottom of the air delivery holes. The low-voltage electrical cabinet with the function of circulating heat dissipation can increase the air convection speed in the low-voltage electrical cabinet, and the heat dissipation speed is faster, so that the low-voltage electrical cabinet has a good circulating heat dissipation effect, and avoids excessive temperature in the cabinet. damage to electrical components, ensuring the reliability of the low-voltage power supply system.

The present invention discloses a power distribution box with a heat dissipation function. The power distribution box comprises an outer box body; two groups of first ventilation holes which are symmetrical to each other are formed at the outer surface of the outer box body; a dust screen is fixedly connected into each first ventilation hole; the inner top wall of the outer box body is fixedly connected with a heat dissipation fan; the inner side wall of the outer box body is fixedly connected with two groups of symmetrical springs; the inner bottom wall of the outer box body is fixedly connected with an inner box body; second ventilation holes are formed at the top of the inner box body; two symmetrical notches are formed at the outer side surface of the inner box body; and the upper part of the inner side wall of the inner box body is fixedly connected with a first temperature sensor and a second temperature sensor. With the technical schemes of the invention adopted, the power distribution box can be effectively prevented from being damaged, the convection speed of air is effectively speeded up, the timely discharge of heat is ensured, and the problems of low heat dissipation efficiency and low practical performance can be solved. The power distribution box with the heat dissipation function has the advantages of more diverse heat dissipation measures, high safety performance, good heat dissipation effect and higher precision.

The invention discloses a cooling and dehumidifying system of a power distribution cabinet, and relates to the technical field of new-generation information. The system comprises a cabinet body and acontroller; an electrical chamber, a liquid cooling chamber, a fan chamber and a monitoring module are arranged in the cabinet body; a vertical partition plate parallel to the side wall of the cabinetbody is arranged between the electric chamber and the liquid cooling chamber; exhaust holes are uniformly formed in the top of the electrical chamber; a plurality of element placement plates are arranged inside the electrical chamber; the liquid cooling chamber comprises a water pump and a condenser; the condenser is arranged on an output hole of the water pump; the condenser is provided with a cold liquid tube; and the cold liquid tube is a return water circulation tube, and penetrates through an inner layer of the vertical partition plate and inner layers of the side walls of the peripheryof the electric chamber. The system can automatically adjust the temperature and the humidity in the power distribution cabinet, so that the power distribution cabinet is prevented from running abnormally due to excess generated heat and excessively high temperature, or the power distribution cabinet is prevented from running abnormally due to excessively high moisture content and excessively highhumidity.

The invention discloses a double-layer threaded turbulent flow heat exchanger which comprises a big pipe, a medium pipe and a small pipe, wherein the big, medium and small pipes are coaxial and sleeved with one another; a first cold medium channel is formed between the big pipe and the medium pipe; a hot medium channel is formed between the medium pipe and the small pipe; a second cold medium channel is formed in the small pipe; the medium and small pipes are threaded turbulent flow pipes; and the big pipe is a smooth pipe or threaded turbulent flow pipe. The heat exchanger provided by the invention can resist chloride ion corrosion and ensure the service life of equipment; the structure of a stainless steel three-layer threaded pipe ensures entirely uniform heat exchange and can prevent the formation of cold bridge and dirt in the pipe to ensure the heat exchange efficiency; and moreover, as a strong turbulent flow can be produced, heat exchange between the medium close to the pipe wall and the medium at the pipe center can be accelerated, thereby ensuring thorough heat exchange, improving equipment efficiency and prolonging the service life; and the sleeve structure has strong pressure bearing capacity, prevents influence on the equipment caused by excessively high pressure, pressure leakage failure and other factors during the operation of the equipment, and prolongs the service life.

The invention provides a large-power LED spotlight characterized by active heat dissipation and belongs to the field of lamps. A lamp holder is fixed on a lower cover; a power drive temperature control plate, a fan, a heat dissipation device, and LED light source, a light source pressing plate, reflective paper, a lens and an upper cover are successively and fixedly connected in a cone from bottom to top; the fan is electrically connected with the power drive temperature control plate, and the LED light source is electrically connected with the power drive temperature control plate; gaps are left between the power drive temperature control plate, the fan and the heat dissipation device, which are fixed on the lower cover via screws; the light source is arranged under the light source pressing plate which is fixed on a heat sink via screws; the reflective paper and the lens are arranged under the upper cover; the upper cover is connected with the heat dissipation device. The structure of the large-power LED spotlight is improved; the wind resistance is reduced and a heat dissipation air duct is unblocked; the manufacture process is simplified, the manufacture cost is reduced and the service life is prolonged.

The invention relates to a bearing propelled stirring quenching device comprising a quenching oil tank, three oil propellers with a same structure, and three fluid directors with a same structure. The three oil propellers are arranged at the quenching oil tank with same distances along a circumferential direction. The three fluid directors are arranged at the bottom of the quenching oil tank with same distances along a circumferential direction. Directing tubes of the three fluid directors are arranged along a circumferential direction, and are arranged with a 30 DEG elevation angle upward. The oil propellers are assembled by using parts of oil transmission tubes, propeller shafts, propeller blades, cylindrical joints, punched bends, and the like. Oil inlet holes on the upper parts of the oil transmission tubes of the three oil propellers are respectively connected with oil outlet holes on the quenching oil tank through pipelines. Punched bends of the three oil propellers are respectively connected with connection bends of the three fluid directors through three bend through holes at the lower part of the quenching oil tank. With the device provided by the invention, large bearing quenching hardness and hardness uniformity are improved, and bearing quality and bearing service life are improved.

The invention discloses an efficient mounting method for waterproof plate coating-free sealant, and belongs to the field of waterproof plates. According to the efficient mounting method for the waterproof plate coating-free sealant, during mounting, two adjacent waterproof plates are extruded to enable a plurality of top bag dispersed bundles to pierce a gas-liquid bag, on one hand, the sealant inthe gas-liquid bag can gradually overflow, a waterproof glue layer is formed between the two waterproof plates, waterproof sealing between the two waterproof plates is achieved, compared with the prior art that sealant is manually smeared, the workload of workers is remarkably reduced, and then the mounting efficiency is improved; and on the other hand, inert gas in the double-layer gas-liquid bag overflows as well, the air convection speed of the overflowing sealant can be increased, the airing speed of the sealant is remarkably increased, the mounting efficiency is further improved, meanwhile, after the gas-liquid bag is pierced, the constraint effect of pre-dispersed bundles is relieved, the pre-dispersed bundles are dispersed and serve as keels of the waterproof glue layer, and the waterproof glue layer is higher in strength and not easily damaged.

The invention relates to the field of medicinal preparations, and especially relates to a method for preparing medicinal liposomes. The method includes the following steps: adjusting liquid carbon dioxide to a supercritical state; dissolving supercritical carbon dioxide in one pipeline with a core material drug, dissolving the supercritical carbon dioxide in the other pipeline with a wall materialsolution, and making the temperature of the supercritical carbon dioxide dissolved with the wall material solution being higher than that of the supercritical carbon dioxide dissolved with the core material drug; introducing the supercritical carbon dioxide dissolved with the core material drug after temperature adjusting into a granulation kettle from the upper part, introducing the supercritical carbon dioxide dissolved with the wall material solution into the granulation kettle from the lower part, and performing liposome granulation, wherein the pressure of the supercritical carbon dioxide dissolved with the core material drug and the pressure of the supercritical carbon dioxide dissolved with the wall material solution are greater than that in the granulation kettle; and collecting encapsulated liposomes. The method reduces the agglomeration of core material particles and the probability of the multiple embedding of the liposomes, and enhance the encapsulation rates of the liposomes.

The invention discloses a cable branch box with heat dissipation function, which comprises a box body provided with a box door, ventilation holes arranged equidistantly on both sides of the box body, and ventilation holes arranged equidistantly on the upper surface of the box body. The cooling mechanism, the ventilation cooling mechanism includes a vertically arranged ventilation pipe, and a filter screen is arranged in the ventilation hole and the ventilation pipe, a conical top cover is arranged above the ventilation pipe, and the outer surface of the ventilation pipe passes through the bracket and the top cover. Fixedly connected, the edge of the top of the box is provided with a baffle, and the baffle is provided with drains arranged at equal distances. The inside of the box is provided with a partition, and the partition divides the inside of the box into a heat dissipation chamber and a working room. The cable branch box with heat dissipation function speeds up the air convection speed inside the box, can quickly and effectively dissipate heat, take away the heat on the cable branch box, ensure that the components in the cable branch box can work stably, and prolong the service life .

The invention discloses an ejection-out type heat radiating device and electronic calculation equipment, and relates to the technical field of heat radiating. The ejection-out type heat radiating device comprises a base, a heat radiating assembly, a fan assembly and a rotary assembly, wherein the rotary assembly is connected with the base; the fan assembly is connected with the heat radiating assembly; the heat radiating assembly is connected with the rotary assembly, so that the heat radiating assembly and the fan assembly can be driven by the rotary assembly to rotate from a first position to a second position or from the second position to the first position. The invention also provides the electronic calculation equipment containing the ejection-out type heat radiating device. The ejection-out type heat radiating device and the electronic calculation equipment have the characteristics that the structure is simple, the convenience in use is realized, the heat radiating area is large, and the heat radiating efficiency is high; the heat radiating efficiency can be adjusted according to real-time temperature, so as to further effectively radiate heat.

The simple electrically heating high purity steam generator as one high purity steam generating apparatus consists of evaporator, connected steam-water separator, pure steam outlet pipe, etc. It has the features of heat transfer coefficient, small size, light weight, low power consumption, high work efficiency and other advantages. The present invention can produce pure steam for sterilizing and may be used widely in pharmaceutical factory, food and beverage factory, brewery, hospital, etc. to sterilize equipment, utensil and container.

The invention discloses a low-temperature concentration method for liquid materials. The method comprises the following steps: putting to-be-concentrated liquid materials into a low-temperature concentration device, starting the low-temperature concentration device, performing blow boiling low-temperature concentration on the liquid materials, and stopping the low-temperature concentration deviceafter concentration completion. The low-temperature concentration device comprises a boiling pool, an air blower, a two-position three-way solenoid valve, a hollow porous plate, a cover plate and a negative pressure blower. A vent pipe is connected onto the cover plate; the negative pressure blower is arranged at one end of the vent pipe; the air blower is connected with the inlet of the two-position three-way solenoid valve by virtue of a pipeline; two outlets of the two-position three-way solenoid valve are circularly and alternatively opened, so that the first air inlet pipe and the secondair inlet pipe are alternatively communicated with the air blower; the interior of the hollow porous plate is partitioned into two mutually independent intervals. The two-position three-way solenoid valve alternatively enables the two intervals to produce bubbles, so that the convection speed of the bubbles and the liquid materials is accelerated, and evaporation of the moisture in the liquid materials is accelerated. Moreover, the liquid materials on the upper part and lower part in the concentration basin are mixed, and concentration is more uniform.

The invention relates to the field of LED (light emitting diode) illumination, in particular to an LED light source module and an LED lamp. The LED light source module comprises a light source subassembly and at least one heat dissipation sleeve, wherein the heat dissipation sleeves are connected with the light source subassembly; the light source subassembly is provided with heat dissipation channels which penetrate in the light source subassembly; and the heat dissipation channels are correspondingly connected with openings of the heat dissipation sleeves. The heat dissipation sleeves are tightly adhered to the light source subassembly in a rivet pressing mode and are hermetically connected with the heat dissipation channels; the whole LED light source module can be assembled without any other fastening parts; the number of assembling workstations is reduced; the assembling process is simplified; the production cost of the whole LED light source module is reduced; by the heat dissipation channels arranged on the light source subassembly, heat dissipation circulation can be performed between the LED light source module and the outside; the air circulation speed is increased; the heat dissipation performance of the LED light source module is greatly improved; heat can be quickly dissipated on a small heat dissipation area through air circulation; the LED light source works stably; and the normal service life of the LED light source is prolonged.

The invention discloses a rolling and rubbing machine, which comprises a roller fixing frame. A storage box is arranged on one side of the roller fixing frame, and a storage rod is arranged in the storage box; a protective piece is arranged on the outer side of one end of the storage rod, and an electric wire is arranged on the inner side of the protective piece; the electric wire is located on the outer side of the storage rod, one end of the electric wire penetrates through the storage box, and the other end of the electric wire penetrates through the storage rod; a rotating disc is arrangedon one side of the storage box, and a rotating rod is arranged on the rotating disc; and the rotating rod penetrates through the storage box, and the other end of the rotating rod is located at one end of the storage rod. By additionally mounting the storage box on one side of the roller fixing frame, when the electric wire needs to be stored, the rotating disc is rotated, the rotating disc drives the storage rod to rotate through the rotating rod, the electric wire is wound on the outer side of the storage rod through the storage rod, thus the electric wire is retracted into the storage boxcontinuously, the electric wire is regularly stored in the storage box through the storage box, knotting caused by disorderly stacking of the electric wire is avoided, and the rolling and rubbing machine is conveniently used again.

The invention discloses an LED lamp, and belongs to the field of illumination. The LED lamp comprises LED light source components, a heat collection tube and a lampshade. The LED light source components are distributed on the heat collection tube in the axial direction of the heat collection tube. The heat collection tube is of a hollow structure and forms an air convection area. The air convection area is communicated with the outside world through openings in the top and the bottom of the heat collection tube. The lampshade wraps the LED light source components in the axial direction of the heat collection tube. The two ends of the lampshade form sealed ends at the two ends of the heat collection tube respectively so that a sealed light-emitting area can be formed in the lampshade. Through the structure, a better heat dissipation effect is achieved; the high-power LED light source components can be applied to the LED lamp while the side wall of the LED lamp emits light, and the requirements of a user are met. In addition, due to the sealing of the light-emitting area, vapor, dust, insects and outside objects can not enter the light-emitting area, and the normal work and safety performance of the LED lamp are ensured.

The invention particularly relates to an energy-saving efficient semi-gasification warm air furnace, and belongs to the field of warm air furnaces. The energy-saving efficient semi-gasification warm air furnace comprises a hearth, wherein a casting is arranged at the top of the hearth, and a gasification air chamber is arranged outside the casting; and the warm air furnace further comprises a fanI, wherein an air inlet communicates with the inner side of the fan I, and the air inlet communicates with a hot air chamber through an air inlet channel. The fan I accelerates air circulation and airconvection speed, so that air convection heating is achieved; heat radiation and heat dissipation are combined, and the two heating modes are combined with each other, so that the heating area is increased, and the heating speed is accelerated; shutter air inlet holes communicating with the gasification chamber is formed outside the hearth, and a furnace body air inlet channel communicates with the outer side of the hearth; and the hearth adopts the shutter air inlet holes or a furnace body air inlet channel for secondary oxygen distribution, after secondary oxygen distribution, sufficient combustion is carried out again, no black smoke is discharged in the combustion process, and emission reaches the standard.

The invention relates to a rapid radiating cup. By means of the rapid radiating cup, the radiating surface of hot beverages in the cup can be enlarged, the convection speed of the hot beverages in the cup can be increased, and therefore the hot beverages can be rapidly cooled. Parabola-shaped radiating pipes are arranged on the periphery of a cup body; and pipe openings in the two ends of each radiating pipe are communicated to the interior of the cup body in a one-up-one-down manner. The contact face between the overall cup body and air is enlarged through the radiating pipes on the periphery; meanwhile, the flow of the convection air around the overall cup body is increased; the amount of liquid in the radiating pipes is small; cooling is rapid; the temperature difference between the liquid in the radiating pipes and liquid in the cup body is increased, so that the convection speed of the liquid in the radiating pipes and the liquid in the cup body is increased, and liquid flowing is facilitated through the parabola-shaped radiating pipes.

The invention discloses a chemical reaction kettle with high working quality, which comprises a kettle body, a driving motor and a filter. A stirring shaft is vertically arranged in the kettle body, a stirring plate is welded on the upper end of the stirring shaft, and a stirring plate is welded on the bottom end of the stirring shaft. There is a stirring rod, the two ends of the stirring rod are fixedly connected with the first scraper, the upper right side of the kettle body is provided with a feed pipe, and the left side of the kettle body near the bottom is provided with a groove, and a bearing is fixedly installed in the groove, and the bearing The inner rotation is connected with a rotary rod, and the second scraper is fixedly connected to the rotary rod. The lower end of the groove is located on the side wall of the kettle body, and a discharge pipe is opened. A filter is arranged outside the left end of the kettle body. The filter and the kettle body They are connected by an air outlet pipe, and a fan is installed on the air outlet pipe. The invention has a simple structure and a reasonable design, which can greatly improve the reflection efficiency of materials. The exhaust gas generated during work can also be absorbed to protect the environment.

The invention discloses a safe and energy-saving glass curtain wall. The safe and energy-saving glass curtain wall comprises an upper fixing plate, outer glass, a lower fixing plate, a solar power generation panel, inner glass and a power generation unit; a layer of antireflection film is attached to the outer part of the outer glass, the solar power generation panel is arranged inside the outer glass, and several partition boards are arranged on the solar power generation panel, and partition the solar power generation panel into several small power generation panel bodies; the inner glass isarranged inside the solar power generation panel, a cavity is formed between the solar power generation panel and the inner glass, reflecting film is arranged at the side, close to the cavity, of theinner glass, an upper fixing plate and a lower fixing plate are arranged over and under the outer glass and the inner glass respectively, and an air inlet is formed in the front side of the lower fixing plate. The antireflection film can prevent noise light caused by reflection of the glass curtain wall, light pollution is reduced, and the curtain wall is safe and reliable; the solar power generation panel converts solar energy into electric energy, and the power generation unit generates the electric energy and provides the electric energy for the interior of a room; the reflecting film is arranged on the inner glass, so that the efficiency of the solar power generation panel is improved, and the energy is saved.

The invention relates to the technical field of new energy automobiles, and discloses an intelligent management device for a new energy automobile battery pack. The intelligent management device comprises a rack, a closing mechanism is rotatably connected in the rack, the closing mechanism comprises a limiting base, and a driving arm is rotatably connected to the opposite side of the limiting base. The inner wall of the rack is slidably connected with a limiting plate, and the opposite side of the limiting plate is movably connected with a battery pack. According to the intelligent management device of the new energy automobile battery pack, when a left transmission rod slides along a ventilation bin, air in the right side of the ventilation bin is squeezed into the left side wall of the battery pack, when a right transmission rod slides along a right ventilation bin, the pressure intensity of the left end of the ventilation bin is reduced, and the right ventilation bin pumps out hot air on the right side wall of the battery pack; and through cooperation with ventilation grooves formed in the limiting plates, the convection speed of air on the outer wall of the battery pack is greatly increased, short circuit of connecting lines caused by overheating of the battery pack is avoided, and potential safety hazards are lower.

The invention discloses a grid-plate-type V-shaped heat exchange device. The grid-plate-type V-shaped heat exchange device comprises a V-shaped heat exchange box, an air exhaust device arranged on the top part of the V-shaped heat exchange box and grid plates arranged in the V-shaped heat exchange box; the grid plates are arranged below the air exhaust device; and the grid plates are fixedly arranged on the top of the V-shaped heat exchange box. The grid plates are arranged, and the flow blocking effect of the grid plates is exerted, so that the convection speed on the top of the heat exchange device is properly lowered, and the convection speed at the bottom is increased. Furthermore, negative pressure formed under the effect of the exhaust device is uniformly distributed on the V-shaped heat exchange box; and the working efficiency at the bottom end of the V-shaped heat exchange box is improved, so that the uniformity of the convection wind speed is realized, and further the heat exchange efficiency at each part of the V-shaped heat exchange box is uniform.

The invention relates to an LED lamp assembly which comprises a radiator substrate and fins mounted on the radiator substrate, wherein the fins comprise three types namely short-high type fins, short-low type fins and long-low type fins; the short-low type fins are positioned on two edges of the radiator substrate in the width direction; the short-high type fins are dispersed in the middle of the radiator substrate in the width direction; and the long-low type fins are distributed between the short-low type fins and the short-high type fins. The LED lamp assembly is light in weight, has better radiating characteristic, can rapidly transfer heat generated when an LED works to the surfaces of the radiator fins to ensure that an LED chip has lower temperature, improve the luminescence efficiency and prolong the service life; and the structural arrangement of the fins facilitates improvement of the comprehensive effect of natural heat loss through convection.

The invention discloses an industrial sludge, waste emulsion slag and metallurgical ash joint treatment system and a power generation process thereof, and belongs to the technical field of dangerous waste comprehensive treatment and heat energy utilization. The joint treatment system comprises a sludge feeding machine, a uniform stirring machine, a discharging machine, an air supply device, a coal mill, a blowing device, a coal-fired boiler, a steam turbine generator unit, a sludge and emulsion slag joint treatment machine and a dust removal device. The sludge and emulsion slag joint treatment machine is wholly of a horizontal bucket structure and comprises a drive shaft penetrating the center line of a bucket body, the two ends of the drive shaft are in transmission connection with an electric motor, the periphery of the drive shaft is fixedly connected with a scraper spiral stirrer, and a sludge inlet, a high-temperature smoke inlet, an emulsion slag inlet and a discharging outlet are formed in the bucket body. The problems that in the prior art, when industrial sludge, waste emulsion slag and metallurgical ash are independently treated, soil and water are polluted, bad smells are easily generated, treatment cost is high, and the boiler dust-containing waste smoke is low in treatment efficiency are solved.

The invention provides a notebook computer cooler. The notebook computer cooler comprises a pedestal, a pedestal support pillar and a bladeless fan, wherein a first hollow is arranged on the pedestal; the pedestal support pillar is fixed on the edge of the base; one end of the pedestal support pillar is hinged with the reverse side of the pedestal; the bladeless fan comprises a suction hole, a cyclone accelerator, a base and an air outlet frame; the first hollow corresponds to the shape of the air outlet frame, so that air discharged from the air outlet frame can be discharged outside; the suction hole and the cyclone accelerator are positioned in the base, and the base is used for supporting the air outlet frame; the suction hole is used for sucking air from outside, increasing the air circulation speed through the cyclone accelerator and blowing the air to the bottom of the notebook computer through the air outlet frame. A fan with blades is replaced with the bladeless fan, the circulation speed of the air is increased by virtue of the cyclone accelerator, and the convection speed between the bottom of the notebook computer and the air is improved. The notebook computer cooler provided by the invention has an ideal cooling effect.

The invention belongs to the technical field of cleaning equipment, and particularly discloses an automobile part cleaning device. The automobile part cleaning device comprises a motor, an outer barrel and an inner barrel. A rotating shaft is connected to an output shaft of the motor. The rotating shaft is located in the inner barrel and is rotationally connected to the inner barrel and the outerbarrel. A transmission mechanism is arranged between the rotating shaft and the inner barrel and enables the rotating directions of the rotating shaft and the inner barrel to be opposite. Cleaning brushes are arranged on the side wall of the rotating shaft and the side wall of the inner barrel, and multiple water spraying holes are formed in the side wall of the inner barrel. A water tank is arranged below the outer barrel, a piston is in sealed sliding connection in the water tank, and an air heater is arranged in the water tank. Cams are arranged on the rotating shaft, a push rod is in sliding connection to each cam, sliding rods are arranged on a piston, and the push rods are fixedly connected with the sliding rods. A connecting pipe is arranged between the outer barrel and the water tank, and a one-way valve is arranged in the connecting pipe. A cavity is formed in the rotating shaft, a water pipe communicates between the cavity and the bottom of the water tank, and a one-way valveis arranged on the water pipe. Water spray holes communicating with the cavity are formed in the side wall of the rotating shaft. One side of the water tank communicates with a water source, and a one-way valve is arranged between the water tank and the water source.

The invention relates to a low thermal resistance flat solar heat collector that is made up of heat collecting board, cycle frame, and thermal insulation box. The heat collection board is joint on the cycle frame and the cycle frame is installed in the thermal insulation box. The advantage is that the cycle frame effectively reducing the thermal resistance of the solar energy collector, increases the contra flow speed of cold water and hot water, and improves the heat efficiency of the solar water heater. The invention is simple structure, low cost and is suited for mass production.