967 results about "Bimetallic strip" patented technology

An axial flow compressor (16) comprises a plurality of variable stator vanes (32) circumferentially spaced apart and extending radially. Each variable stator vane (32) is rotatably mounted on a compressor casing (28). A control ring (38) surrounds the compressor casing (28). Each variable stator vane (32) is connected to the control ring (38) by a respective one of a plurality of operating levers (40) and the control ring (38) is spaced from the compressor casing (28) by a clearance. A plurality of bimetallic strips (50) are arranged circumferentially and are positioned radially between the control ring (38) and the compressor casing (28) and the bimetallic strips (50) control the clearance between the control ring (38) and the compressor casing (28) whereby any error of the variable stator vane (32) angular position is reduced. Each bimetallic strip (50) extends radially outwardly from the compressor casing (28) towards the control ring (38). Each bimetallic strip (50) comprises a first metal strip (52) bonded to a second metal strip (54) and the first metal strip (52) has a different coefficient of thermal expansion than the second metal strip (54).

The invention relates to an automatic welding machine for a bimetallic component. The automatic welding machine comprises a first rotary plate device and a second rotary plate device, the first rotary plate device comprises a first rotary plate, a wiring board feeding mechanism, a U-shaped connecting piece feeding mechanism, a wiring board welding mechanism, a bimetallic strip feeding mechanism, an end tab feeding mechanism and an arc striking component welding mechanism, the first rotary plate is provided with a plurality of first fixtures, the second rotary plate device comprises a second rotary plate, a copper braided wire shearing feeding mechanism, a copper wire welding mechanism, a movable contact feeding mechanism, a movable contact welding mechanism and a finished product discharge mechanical arm, the second rotary plate is provided with a plurality of second fixtures, material moving stations are arranged between the close positions of the first rotary plate and the second rotary plate, the material moving station is located between the wiring board feeding mechanism and the arc striking component welding mechanism, and the material moving station is located between the copper braided wire shearing feeding mechanism and the finished product discharge mechanical arm. The automatic welding machine for the bimetallic component realizes to automatically weld and assemble the bimetallic component and has advantages of high automatic degree, high welding efficiency and good welding quality.

The trip is mainly composed of part for triggering action in the actuating mechanism, and the tripping mechanism. One end of the heating unit in the tripping mechanism is as the end for inputting current; and the other end is connected to the fixed end of the bimetallic strip electrically. The free end of the bimetallic strip is near to the drawbar. U type magnetic yoke is installed near to the heating unit. Hinged one end of armature is installed related to the extension arm of the U type magnetic yoke. The free end of the armature is near to the drawbar. Winding is enwound on at least one extension arm of the magnetic yoke; When short circuit current passes through the winding, the magnetic yoke generates magnetic field intensity direct proportional to number of turns of winding. Thus, even if small current passes through the winding, magnetic field enough to attract armature can be generated. Improving structure simply, the invention overcomes problem existed in current technique.

The invention provides an operating mechanism of a miniature circuit breaker, which comprises a housing, a handle and a static contact. The internal surface of the housing is provided with a handle shaft. The handle is sleeved on the handle shaft. The invention further comprises a transmission rod, a transmission component and an electromagnetic trip gear. The transmission rod is hinged with the handle and the transmission component. The transmission component comprises a lock latch shaft, a lock latch spring, a lock catch, a moving contact, a jumping latch and a jumping latch spring. The lock latch shaft is arranged on the internal surface and parallel with the handle shaft. The other parts is sleeved on the lock catch shaft in turn. The moving contact and the static contact are matched with each other. A triggering lug boss is arranged on the jumping latch, which is matched with a releasing rod pushed by a moving iron core in the solenoid of the electromagnetic trip gear. The invention can further comprises an adjustable reaction spring used for restricting the operation of the moving iron core, a bimetallic strip, an arc striking tab and an arc suppressing device. The invention has the advantages of less components, simple structure, good stability , low cost, convenient production and installation, safety and adjustable setting current.

A terminal for a Li-ion battery cell utilizes a bimetallic strip formed from the materials used as the Li-ion cell current collectors, such as copper and aluminum. The bimetallic strip is to be used as, at least one, of the Li-ion pouch cell terminals. At least one portion of the bimetallic strip has one of the metallic components removed by such means as chemical or electrochemical etching, mechanical milling, skiving, or grinding, the remaining component being connected to the collector and the other end of the strip serving as the terminal.

The invention relates to a novel surge protection device which mainly comprises a breaking switch, a current sensor, a detecting and driving unit, a power source, a tripping mechanism, an electromagnet, a bimetallic strip, a lightning protection element, an upper terminal and a lower terminal. The upper terminal is connected with the breaking switch, the lightning protection element and the lower terminal in series. The current sensor can detect current conditions in a circuit and output signals to the detecting and driving unit, the detecting and driving unit drives the electromagnet by judging the characteristic of detected currents, the electromagnet can drive the tripping mechanism to move, and therefore a whole SPD access is switched off. The detecting and driving unit is connected with the power source. The temperature of the lightning protection element is transmitted to the bimetallic strip through a heat conduction paster, and when the temperature is too high, the bimetallic strip can be deformed to drive the tripping mechanism to move, and the circuit is switched off. The novel surge protection device has the comprehensive lightning preventing function, power frequency short-circuit currents can be switched off fast, tripping can be carried out when leakage currents are too high, lightning currents are discharged smoothly, and the novel surge protection device is convenient to mount, safe and effective.

The invention provides a wall allowing a heat transfer coefficient to be automatically adjusted. The wall comprises a surface layer, a variable heat resistance layer and a load bearing layer. The variable heat resistance layer is arranged between the surface layer and the load bearing layer and comprises double metal sheets. In a cold state, the double metal sheets directly or indirectly make contact with the surface layer and the load bearing layer to build a conduction heat bridge between the surface layer and the load bearing layer, and the heat transfer coefficient of the wall is increased. In a hot state, the double metal sheets bend, deform and separate from the surface layer and / or the load bearing layer, so that the conduction heat bridge between the surface layer and the load bearing layer is broken, and the heat transfer coefficient of the wall is decreased. Through the wall allowing the heat transfer coefficient to be automatically adjusted, the quantity of heat conducted from outdoor space into indoor space in daytime can be reduced, an outdoor cold source can also be sufficiently used for cooling indoor air at night, and air-conditioning energy consumption is reduced.

The invention discloses a gate lock switch and controlling means of washer. The gate lock switch comprising: switch casing; slide block which used to lock the pothook of gate in switch casing or separated from switch casing and that set on switch casing by mobile manner; lockpin which can hitch / loosen slide block; bimetallic strip which can move between the position of lockpin hitching slide block and loosening slide block; switch which can contact with contact point when the lockpin moving to the place of hitching slide block; safety pole which can cutting switch contact point by the manner of moving lockpin when the door is opened by force. The provided gate lock switch and controlling means of washer by this invention can rapidly cut the power of washer electric driving device when the washer door be opened by force, thus there is no need to install gate switch, so that this can make the structure and control of washer more simple. In addition, the set magnet coil in washer can expedite the rupturing operation of electric driving device powder.

Various implementations provide an inherently safer design feature for microchannel reactors that provides temperature control at the individual channel level. This approach relies on bimetallic strips embedded within the combustion channel, forming a thermally-actuated “valve”. Bimetallic strips convert a temperature change into a mechanical displacement. Heating the strip increases its deflection and thereby restricts flow in the combustion channels, which consequently reduces the rate of heat generation. The thermally-actuated valve is not limited to use in microchannel reactors and may be used in other structures for which thermally actuated flow control is desired, according to some implementations.

A sensor for quantitative test electromechanical properties and microstructure of nano-materials and a manufacturing method for the sensor are provided. The sensor comprises a suspended structure, pressure-sensitive resistor cantilevers, support beams, bimetallic strip and other components. When the bimetallic strip produces bending deformation, one of the pressure-sensitive resistor cantilevers is actuated and then stretches the low-dimensional nano-materials which drive the other pressure-sensitive resistor cantilever to bend. Through signal changes are outputted by the Wheatstone bridge, the variable stresses of low-dimensional nano-materials are obtained. Meanwhile, the variable strains of low-dimensional nano-materials are obtained by the horizontal displacements between two cantilevers, so the stress-strain curves of low-dimensional nano-materials are worked out. When the low-dimensional nano-materials are measured in the power state, the voltage-current curves are also obtained. In addition, by the help of high resolution imaging system in the transmission electron microscopy, the mechanical-electrical-microstructure relationship of the nano-materials can be recorded in situ and in atomic lattice resolution.

The invention provides a plug, comprising a shell body (1), terminals (2, 3, 4) extending into the shell body, and electric output wires (5, 6, 7). The invention has the characteristics that the shell body is also provided with a temperature and electric current protector (100), wherein the temperature and electric current protector (100) comprises a bimetallic strip (40) and a thermal resistor (50) which is arranged in parallel at the two ends of the bimetallic strip (40); the temperature and electric current protector is arranged in series between the live wire terminal and the live wire of the electric output wire. The invention is capable of preventing the automatic resetting of the bimetallic strip after breaking off to shut off the circuit, which enhances the safety of the use, as the electric supply of the plug needs to be cut off and the power supply needs to be connected to reset the power source after the temperature falls. Therefore, the safety is enhanced; and the plug is more sensitive to the protection of overcurrent.

The invention relates to a triggering part of a tripping protection system of a low-voltage breaker, in particular to a low-voltage breaker tripper, belonging to low-voltage power transmission and distribution equipment. The low-voltage breaker tripper comprises a pair of conductor wiring terminals, i.e. a first wiring terminal and a second wiring terminal. The first wiring terminal and the second wiring terminal are respectively connected with a heating element and a double plate which is used as a magnetic field generating element; the heating element and the double plate are both arranged on a plastic support; the heating element is connected with the lower end of a bimetallic strip; the upper end of the bimetallic strip is connected with the double plate through flexible connection; and the double plate is provided with two elongated slots; the low-voltage breaker tripper also comprises a magnet yoke with two arms; the two arms of the magnet yoke pass through the two elongated slots on the double plate; a sheet armature which can be picked up by the magnet yoke is arranged in front of the two arms of the magnet yoke; and the armature can swing around the jointed shaft of the root of the armature. The invention has compact structure and high operating reliability, is convenient to manufacture and install and is easy to adjust in operating parameters.

The invention provides a bimetallic strip type microbend optical fiber temperature sensor, which comprises a microbend optical fiber deforming device, a signal optical fiber imbedded in the microbend optical fiber deforming device and a bimetallic strip, wherein the bimetallic strip contacts with the microbend optical fiber deforming device. The bimetallic strip in the inventive bimetallic strip type microbend optical fiber temperature sensor can generate displacement according to the temperature variation, so as to generate deflection variation which acts on the microbend optical fiber deforming device to make the deforming device generate displacement, so as to change the bending loss of optical fiber. In this way, the temperature signal is converted to optical signal, which can be transmitted by the optical fiber to realize long-distance measurement with high precision and good reliability.

The invention relates to an air intake / evacuation valve for an electric cooking appliance. The electric cooking appliance comprises a pot cover, wherein the pot cover is provided with air inlet / outlet holes; and the invention is characterized in that the air intake / evacuation valve comprises a valve core and a bimetallic strip connected with the valve core, wherein the bimetallic strip is arranged on the pot cover and drives the valve core to close or open the air inlet / outlet holes. The two ends of the bimetallic strip cross the air inlet / outlet holes and are arranged at one side of the pot cover, and the valve core is connected with the middle part of the bimetallic strip and is corresponding to the air inlet / outlet holes. The air intake / evacuation valve provided by the invention has the characteristics and advantages and can be applied to kitchenware such as a common electric cooker, a micropressure pot, a soup making pot, a simmering pot, a pressure cooker and the like.

In a Valve, grid-patterned, fixed wall(s) and movable gate plate / plug are built in the hub to control the conduction area. Adjustable spring is applied to push the gate / plug firmly against the fixed wall(s). The structure alteration reduces the travel length required to switch the valve between open and closed states. Since the open / close state is self-sustaining at its last switched state due to friction, no holding energy is required in the actuator. Consequently, a small linear operation solenoid can be used in impulse mode to operate the valve. Due to its low cost, separate solenoids are used to respectively pull open and close the valve in lieu of applying an auto-direction-conversion mechanism. A bimetallic strip contact in series with a resister, packaged together in a thermal isolating tube, is used to prevent the low-duty solenoid from excessive stress-time.

A method for making a coaxial cable including an inner conductor, an outer conductor, and a dielectric material layer therebetween may include forming the inner conductor by at least forming a bimetallic strip into a tubular bimetallic layer having a pair of longitudinal edge portions at a longitudinal seam. The bimetallic strip may include an inner metal layer and an outer metal layer bonded thereto and coextensive therewith. Each of the longitudinal edge portions may be folded over. The method may also include forming a welded joint between adjacent portions of the folded over longitudinal edge portions and defining surplus material at the welded joint. The method may further include removing the surplus material at the welded joint and forming the dielectric material layer surrounding the inner conductor. The method may also include forming the outer conductor surrounding the dielectric material layer.

A device for converting thermal power into electric power including a plurality of bimetallic strips disposed between a rigid support and a plate of a resilient plastic material; and on the side of the plate of a resilient plastic material opposite to the strips, a layer of a piezoelectric material connected to output terminals, wherein the rigid support is capable of being in contact with a hot source, and the plate of a resilient plastic material is capable of transmitting to the piezoelectric layer the mechanical stress due to the deformations of the bimetallic strips.

The invention provides a sudden-jump type temperature controller, comprising a shell, a dual-metal sheet which is arranged inside the shell, a switch which is used for turning on or turning off an electro-thermal circuit, and a control part which controls the closing or the opening of the switch when the dual-metal sheet suddenly jumps; the sudden-jump type temperature controller is characterized in that a chamber is formed by the internal wall of the shell and the dual-metal sheet; at least one heating resistance which is arranged to be closely adjacent to the dual-metal sheet suspends in the chamber; the heating resistance is provided with a pair of pins which are respectively fixedly connected at one end of each of two wiring terminals which are used for conducting the heating resistances; the other end of each of the two wiring terminals passes through the shell and are extended out of the shell. Compared with the prior art, the sudden-jump type temperature controller is provided with the high-precision metal film resistance in the working space of the dual-metal sheet; when the temperature is reduced in the normal working environment of the temperature controller product, the dual-metal sheet obtains the compensation power by the heating resistance and certain sudden-jump temperature is achieved locally.

The invention discloses a gear grinding machine for manufacturing a bimetallic strip saw which includes a machine tool base; the outer hood of a machine tool is arranged at the top part of the machine tool base; a grinding wheel drive device is arranged in the outer hood of the machine tool; an X-shaft sliding block which can slide left and right is arranged on the machine tool base and is connected with a clamping working platform. After the structure is adopted, the gear grinding machine is reasonably designed, can simultaneously process the standard gear forms of a plurality of bimetallic strip saws, thus improving the production efficiency; besides, the grinding wheel is adopted to carry out gear form grinding to the bimetallic strip saws; therefore, the precision and the finish degree of the grinded gear forms are higher, thus improving the product quality.

The invention discloses an electric kettle. The electric kettle comprises a body which is provided with an upper coupler, a base component which is provided with a lower coupler, a control circuit which is arranged in the base component, and a user operation device, wherein the body and the base component are connected through the upper coupler and the lower coupler, and a heating circuit is formed between the body and the base component; the body comprises a container which forms a liquid accommodation cavity; the bottom of the container is provided with an electric heating component; waterproof structures are arranged on the upper coupler and the lower coupler; the outer side of the bottom of the container is hermetically provided with a bottom cover; the upper coupler is connected to the bottom cover, and the joint of the upper coupler and the bottom cover is sealed so that a closed cavity is formed between the bottom of the container and the bottom cover; a pressure relief valve device is hermetically arranged on the bottom cover; a bimetallic strip temperature controller is arranged on the lower surface of a bottom wall of the container; and the bimetallic strip temperature controller and the electric heating component are connected in series in the heating circuit.

The invention relates to a manufacturing method of an independent welded grinding-tooth-shaped bimetal band saw blade, which sequentially comprises the following five steps of carrying out forming processing and heat treatment on a tooth part material; carrying out forming processing and heat treatment on a steel band back material; welding the tooth part material and the steel band back material which are subjected to heat treatment into one whole body; carrying out heat treatment on a welding region; carrying out forming processing on the welded tooth part material, the welding region and the welded steel band back material, removing welding slag generated in the welding process and processing a cutting edge on the tooth part material. The tooth part material and the steel band back material are respectively and separately subjected to heat treatment before welding without adopting a process of carrying out online quenching and annealing on a current composite material, so that performance of the tooth and back materials can be sufficiently utilized; the tooth part material and the steel band back material are respectively subjected to forming processing, so that the condition that the tooth part material and the steel band back material are cut after being welded to cause cutting on most of the tooth part material is avoided and loss of raw materials is reduced.

The invention discloses a temperature control heat dissipation power-saving cabinet which comprises a cabinet body, an air duct and a temperature control device. The cabinet body is provided with a ventilation device; the ventilation device comprises an exhaust fan and the air duct; the exhaust fan is formed at the topmost part of the front side of the cabinet body; the air duct is formed at the side of the cabinet body; the air duct is formed vertically along the cabinet body; an air inlet is formed in the bottom of the air duct; an air draft fan is mounted at the air inlet; a plurality of branch pipes are arranged on the air duct and are connected with corresponding drawers of the power-saving cabinet; the temperature control device comprises an active contact and a passive contact; the active contact is positioned above the passive contact and is not in contact with the passive contact; the active contact is made of a bimetallic strip. According to the temperature control heat dissipation power-saving cabinet, the temperature-controlled fans are utilized to cool electrical appliance elements; working temperatures of the electrical appliance elements are reduced; the service lives are prolonged; the temperature-controlled fans can only be started when the temperature reaches a certain value, so that the fans are prevented from being worn due to long-term start.

The invention discloses an operation device of a miniature multi-pole circuit breaker. The operation device comprises a handle, a rotary plate mounted on a housing in a pivoting manner by a mandrel, two pairs of contacts capable of performing closing / breaking matching, two electromagnetic tripping devices arranged side by side, and two thermal tripping devices arranged side by side, wherein a tripping connecting rod provided with a lock hook is mounted on the rotary plate in a pivoting manner by a first twisting shaft; a lock tooth, a control element capable of being matched with the electromagnetic tripping devices of the adjacent two-pole circuit breaker, and an actuating rod capable of being matched with bimetallic strips of the thermal tripping devices of the adjacent two-pole circuit breaker are arranged on a tripping rod which is mounted on the rotary plate in a pivoting manner by a second twisting shaft; the two ends of a U-shaped rod are connected with the handle and a hinge of the tripping connecting rod respectively; two short-circuit short columns arranged on the control element side by side are matched with actuating ejection rods of the two electromagnetic tripping devices in a triggering manner respectively; and two overload short columns arranged on the actuating rod side by side are matched with the bimetallic strips of the two thermal tripping devices in a triggering manner respectively. The tripping rod can be controlled by the two adjacent groups of independent tripping devices; and the operation device is small in size, compact in structure and more reliable in motion.

The invention discloses a double metal strap stepless speed change device, comprising a drive shaft and a driven shaft, wherein, a drive shaft is provided with a left drive fixed conical disk, a left drive movable conical disk, a right drive fixed conical disk, a right drive movable disk and a right metal strap; a driven shaft is movably provided with a left driven movable conical disk, a left driven fixed conical disk, a right driven movable conical disk and a right driven fixed conical disk. The invention is characterized in that: a counter balance spring is arranged between the left drive movable conical disk and the right drive fixed conical disk; the left drive movable conical disk is connected with a first sleeve which is connected with the right drive movable conical disk through the right drive fixed conical disk; a pressure spring is arranged between the left driven fixed conical disk and the right driven movable conical disk; and the left driven movable conical disk is connected with a second sleeve which is connected with the right driven movable conical disk through the left driven fixed conical disk. A structure can be greatly simplified by adopting the sleeves to be connected with two movable conical disks which are coaxial; a compression speed regulating system adopts mechanical pressurization and designs an axial pressure-balanced device with compact and efficient structure, thereby speed regulation by a miniature motor can be realized. The device has the advantages of simple structure, small volume, large speed change range and simple control.

The invention provides a circuit breaker, comprising a thermal tripping device which conducts a distance adjustment between a tripping rod and an adjusting piece in quite a short time. The thermal tripping device (42) comprises a bimetallic strip (43) having a guiding groove (43a) disposed at the opening of one abutting end of the tripping rod (33), a clamping hole (43b) disposed at a regulated distance with the guiding groove (43a) in a length direction, and the adjusting piece (44). One end of the adjusting piece (44) is clamped with the clamping hole (43b) and the other end slides in the guiding groove (43a) with the clamping hole (43b) as the center, thereby the adjusting piece can rotate in a direction opposite to the deformation of the bimetallic strip (43). Under the state that the adjusting piece (44) and the tripping rod (33) abut against each other and are pushed back through the deformation of the bimetallic strip, the adjusting piece (44) is fastened on the bimetallic strip (43). The adjusting piece (44) has a bottom part (44c) sliding on the bottom face of the guiding groove (43a).

The invention provides a machining process of a double-metal band saw. A saw back material and a saw tooth material are welded by laser; then, the bright annealing treatment is performed; a two-roller rolling mill is used for welding line leveling, straightening, repeated extrusion and fixed-length material preparation to obtain a coiled band; then, the tooth milling, the tooth material cleaning, the tooth separation, the quenching treatment and the subzero treatment are performed; and the rolling straightening, the sand blasting, the code spraying and the root band butt welding are performed after secondary tempering treatment to obtain the double-metal band saw. Compared with the prior art, the machining process uses carbon, silicon, manganese, chromium, tungsten, molybdenum, vanadium, nickel, cobalt, niobium, sulfur and iron as components of the saw tooth material, and improves the hardness and the toughness of the double-metal band saw through adjusting the contents of all the components. Secondly, the machining process adopts such modes as quenching treatment and subzero treatment to guarantee the tempering sufficient degree, and improves the characteristics of high hardness, high toughness and tidy incision of the double-metal band saw.

The invention discloses a bimetallic strip feeding system for a heat protector, and relates to the technical field of manufacturing of temperature control electronic elements. In the bimetallic strip feeding system for the heat protector, a bimetallic strip loading device is provided with a poking mechanism for eliminating bimetallic strips with a nearer gap therebtween from a loading path; a bimetallic strip carrying device is provided with a pressing piece on a groove part of a carrying groove body; a carrying channel for allowing feeding of the bimetallic strips one by one is formed between the pressing piece and the carrying groove body; a bimetallic strip feeding device is provided with a position-fixed pressing plate on a groove of a feeding block; a space for singly feeding the bimetallic strips is formed between the pressing plate and the groove; finally, the bimetallic strips on a bimetallic strip feeding stop station are shifted onto a machining platform by the feeding device, so that the bimetallic strips cannot be laminated in the whole conveying process; and the bimetallic strip feeding system is stable and reliable in work, realizes automation, and improves the production efficiency.

The present invention relates to a cigar lighter, especially for a motor vehicle, comprising a heating body and a knob intended to be engaged in the heating body, this knob including a heating resistance element located in a cup and able to be supplied with electricity via a supply bimetallic strip in contact with the cup when the knob is pushed in into a heating position, and a safety device maintaining electrical contact with the cup, whatever the shape of the supply bimetallic strip, in order to continue to supply the heating resistance element as long as the knob is pushed in into the heating body in heating position, in which the electrical contact between the safety device and the cup is formed on the flank of the outer face of the cup.

An improved structure of a circuit breaker is provided which comprises a housing, a rocker-switch, a push-shaft, a pull-shaft, a bimetallic strip, and other parts. There are three terminals under the rocker-switch inside the housing. A bimetallic strip embedded in a groove under the pull-shaft makes contact with that pull-shaft through a silver point at one end. The bimetallic strip also makes contact with the push-shaft at the other end using another silver point. Both the pull-shaft and the push-shaft are connected with a curved spring installed inside the V-shaped slot on an adjustment strip. The bimetallic strip, curved spring, and both the pull-shaft and the push-shaft constitute the main control mechanism that provides the circuit breaking action under overloading condition.

The invention relates to the technical field of large-scale storage. The invention further discloses a memory mounting cabinet heat dissipation device based on the bimetallic strip principle. The device comprises a cabinet body, the interior of the cabinet body is fixedly connected with a temperature sensing rod, the top of the temperature sensing rod is fixedly connected with an adjusting gear; acontrol block is connected to the outer part of the adjusting gear in a meshing manner; a connecting contact block is movably connected to the outer part of the control block; a negative pressure fanis fixedly connected to the interior of the cabinet body; a flow guide pipe is movably connected to the outer part of the negative pressure fan; the temperature sensing rod, the adjusting gear, the control block, the connecting contact block, the negative pressure fan, the flow guide pipe, the air outlet and the air inlet hole are matched for use; therefore, the effect of automatically controlling heat dissipation is achieved, the energy is effectively saved, the heat dissipation effect can be fully guaranteed, wind power is evenly introduced into the cabinet body through the flow guide pipe,the uniformity of air flowing in the cabinet body is guaranteed, the sufficient heat dissipation effect is guaranteed, uneven heat dissipation is avoided, and the normal operation of equipment in thecabinet body is effectively guaranteed.