6008results about "Tubular elements" patented technology

The present invention relates to the technical field of waste heat recovery equipment, and specifically discloses a waste heat recovery device for flue gas in a thermal power plant. It includes a box body with an upper smoke chamber, a heat exchange chamber and a lower smoke chamber inside. A number of smoke pipes connecting the upper smoke chamber and the lower smoke chamber are fixed in the heat exchange chamber; above the smoke pipes, there is a piston cylinder fixed by the box body; the upper end of the piston cylinder is connected to a high-pressure gas supply pipe, and a piston is arranged inside. The piston is connected with a scraping head through a push rod; side holes are provided on the push rod; when the high-pressure gas drives the piston to move downward, the scraping head moves along the inner wall of the smoke pipe to scrape off the ash slag. The waste heat recovery device for flue gas in this thermal power plant has a cleaning function and a better cleaning effect, high heat exchange efficiency and good waste heat recovery effect. The waste heat recovery device for flue gas in this thermal power plant can be automatically cleaned without disassembling components, is fast and efficient, and can be operated online. The ash slag scraped off during the cleaning process can be centrally recovered, avoiding re-mixing into the flue gas again, reducing the workload in the flue gas dust treatment link, and saving the subsequent environmental protection treatment cost.

The invention relates to the technical field of finned heat exchangers, and discloses an adjustable finned heat exchanger which comprises a shell, air passing openings are formed in the two sides of the shell, a plurality of heat exchange modules used for heat transfer are arranged in the shell, the heat exchange module located in the middle is fixed to the shell, and the air passing openings are formed in the air passing openings. The other heat exchange modules are slidably connected with the shell through guide mechanisms, the distance between the heat exchange modules can be adjusted through adjusting mechanisms, the heat exchange modules are communicated through second corrugated pipes, and fans are fixed to the inner sides of the two ends of the shell through bolts. According to the heat exchanger, through the movable heat exchange module, auxiliary shaking can be conducted on water drops, the water drops fall off from the heat exchange module, the retention time of the water drops on the heat exchange module is shortened, corrosion of the water drops to the heat exchange module is reduced, and the service life of the heat exchanger is prolonged.

The invention discloses a gradient porous medium heat transfer channel and a preparation method thereof. The gradient porous medium heat transfer channel comprises a heat transfer pipe, porous media are arranged in the heat transfer pipes, and the porosity and aperture of the porous media are in gradient distribution in the axial direction or the radial direction of the heat transfer pipes. When the porosity and aperture of the porous medium are in gradient distribution in the axial direction of the heat transfer pipe, the porous medium is divided into multiple layers in the axial direction of the heat transfer pipe, the porosity or aperture of each layer is gradually increased or decreased in the axial direction of the heat transfer pipe, and the aperture of each layer is the same in size; when the porosity and the pore diameter of the porous medium are distributed in a gradient mode in the radial direction of the heat transfer tube, the porous medium is divided into multiple circles in the radial direction of the heat transfer tube, the pore diameter of each circle is distributed in a gradient mode in the radial direction of the heat transfer tube, the pore diameter is gradually increased or decreased, the porosity is gradually decreased, and the pore diameters of all the circles are the same in size from the inner circle to the outer circle. And fluid can be guided to form complex microscopic flow, gas-liquid flow is optimized, the heat transfer coefficient is remarkably increased, and the efficient and low-energy-consumption heat transfer process is achieved.

A thermal module structure includes an aluminum base having an upper and a lower surface, at least one L-shaped copper heat pipe, a first aluminum fin assembly, a second aluminum fin assembly, and at least one copper embedding layer. The copper heat pipe includes a heat absorption section fitted on the aluminum base, and a heat dissipation section connected to the second aluminum fin assembly. The copper embedding layers are provided on the aluminum base at areas corresponding to the first aluminum fin assembly and the heat absorption section of the copper heat pipe, and on a bottom surface of the first aluminum fin assembly that is to be connected to the aluminum base. Thus, the first aluminum fin assembly and the copper heat pipe can be directly welded to the aluminum base via the copper embedding layers without the need of electroless nickel plating.

The invention discloses a micro-channel flow boiling enhanced heat transfer device based on a bionic structure. The device comprises a micro-channel structure base body, a channel inner surface wettability regulation and control layer, a working medium inlet and a working medium outlet. A bionic structure microchannel is arranged in the microchannel structure base body, the inner wall of the microchannel structure base body is provided with a micron-scale or nanometer-scale texture structure, the bionic structure microchannel is composed of a main channel and branch channels of at least three levels of fractal hierarchical structures, the width ratio of the branch channels is 1: 0.2-0.5, and the length range of the branch channels is 2-10 mm. And the contact angle gradient of the wettability regulation and control layer on the inner surface of the channel is 5-120 degrees. The tail end of each branch channel is provided with a bubble capturing groove with the diameter of 5-10 mm and the depth of 5 mm. The device can improve the boiling heat transfer coefficient, reduce the flow resistance and improve the bubble generation and desorption process, and is suitable for the fields of heat dissipation of high-heat-flux electronic equipment, aerospace heat management, chemical reaction and the like.

The invention discloses a biogas internal combustion engine exhaust gas waste heat cascade reutilization heat energy recovery device which comprises an exhaust gas conveying pipeline, a heat exchange cavity is formed in the exhaust gas conveying pipeline, a plurality of tower-shaped spiral heat exchange pipelines are arranged in the heat exchange cavity, the multiple heat exchange pipelines are vertically and sequentially distributed, the heat exchange pipelines are corrugated pipelines, and the heat exchange pipelines are communicated with the heat exchange cavity. A power rod is arranged in the middle of the heat exchange pipeline; the vibration motor and the power rod are arranged in the waste gas conveying pipeline, so that the power rod can guide and transmit the driving force of the vibration motor to the tower-shaped spiral heat exchange pipeline capable of extending and contracting through the hard connecting structure or the soft connecting structure, and the heat exchange pipeline can shake up and down in the heat exchange operation period; and therefore, water flowing in the pipeline can be driven to roll up and down, the water flowing in the pipeline can be more sufficiently and uniformly attached to the inner wall of the heat exchange pipeline, the heating area of the pipeline is more uniform, and the overall heat exchange effect is effectively improved.

The invention belongs to the technical field of heat exchange, and particularly relates to a liquid metal enhanced heat exchange pipeline which comprises a pipeline body, an auxiliary heat exchange cavity and liquid metal. One end of the auxiliary heat exchange cavity is arranged on the pipeline body, and the other end of the auxiliary heat exchange cavity is far away from the pipeline body; the auxiliary heat exchange cavity is filled with the liquid metal. The auxiliary heat exchange cavity is filled with the liquid metal, and compared with a traditional cooling medium, the liquid metal can transfer heat more quickly by means of the ultrahigh heat conductivity of the liquid metal, the heat resistance is reduced, and the overall heat exchange efficiency is improved. In addition, due to the high thermal conductivity of the liquid metal and the optimized heat exchange structure, efficient heat exchange can be achieved in a more compact space, and the requirement for additional cooling fins or heat exchange assemblies is reduced. And compared with a traditional heat exchanger, the heat exchange power density of unit volume is higher, the heat exchanger is suitable for high-power electronic equipment, spaceflight heat dissipation systems and new energy heat exchange equipment, and the requirements for miniaturization and efficient heat dissipation are met.

The invention discloses an automatic ash removal type thermal cycle supercritical CO2 flue gas heat exchanger which comprises a connecting frame, a first sealing cover and a second sealing cover are connected to the front side and the rear side of the connecting frame through bolts correspondingly, a dust suction assembly is arranged on the front side of the first sealing cover, and a heat exchange pipe is fixedly connected to the interior of the connecting frame; a plurality of heat conduction fins are fixedly connected to the heat exchange pipe, and one end of the heat exchange pipe is fixedly connected with a first air inlet pipe. According to the cleaning device, a servo motor drives a corresponding reciprocating lead screw to rotate, a cleaning assembly can be driven to reciprocate along a limiting rod through a mounting plate through transmission of a first chain wheel and a first chain, in the moving process of the cleaning assembly, an arranged gear is meshed with a rack, a corresponding rotating shaft can be driven to rotate, and through transmission of a second chain wheel and a second chain, the cleaning assembly is driven to rotate. And the rotating shafts can be driven to rotate, so that the connecting shafts arranged between the rotating shafts are driven to rotate, and the cleaning brushes can be driven to rotate to clean the exteriors of the heat exchange tubes and the heat conduction fins.

A heat dissipation device includes a vapor chamber (1) and at least one heat pipe (2). The vapor chamber (1) includes a bottom plate (10) and a top plate (11) combined with each other to form a cavity (100); the cavity (100) contains a top plate capillary layer (11a) covering the top plate (11) which has at least one through hole (110). The heat pipe (2) includes a pipe body (20) with a closed end (200) and an open end (201) fixed in the through hole (110), and a pipe capillary layer (21) with a connecting portion (210). The top plate (11) includes at least one protrusion (111) corresponding to the through hole (110) and having a receiving portion (111a) recessed inside the top plate (11), and a capillary structure (11b) in the receiving portion (111a) and contacting with the connecting portion (210) and top plate capillary layer (11a).

The invention provides a steam heat exchange tube and a steam-water mixing heat exchanger thereof, the heat exchange tube comprises a tube body and spiral flow channel sheets arranged outside the tube body, one end of the heat exchange tube is opened for steam to flow in, the other end of the heat exchange tube is closed, steam outlet holes are formed in the tube body between the spiral flow channel sheets, and the steam in the heat exchange tube flows out through the steam outlet holes. Steam flows along the spiral flow channel and is fully mixed with liquid flowing outside, the turbulent flow effect of steam-liquid mixing is enhanced, and the steam-liquid heat exchange effect can be improved.

The invention discloses an integrated heat exchanger for a hybrid electric vehicle, which belongs to the technical field of heat exchangers and comprises an integrated box, a first water chamber and a second water chamber are mounted in the integrated box, and a cooling liquid inlet pipe and a cooling liquid outlet pipe of an engine are fixedly mounted on the first water chamber. A motor cooling liquid outlet pipe is fixedly mounted on the second water chamber, a first spiral channel and a second spiral channel are formed in the mixing pipe, and a heat dissipation pipe is connected between the first water chamber and the second water chamber in a sealed mode. In the mixing pipe, fluid-solid coupling heat exchange is carried out on the engine cooling liquid and the motor inlet cooling liquid with the low temperature, the engine cooling liquid returns to the first water chamber after the temperature of the engine cooling liquid is reduced, the process is repeated for multiple times, and the engine cooling liquid subjected to primary cooling is subjected to secondary cooling.

The present invention relates to the technical field of alumina production. The present invention discloses a waste heat recovery device for a roasting furnace, which comprises a flue gas fan, a heat exchange pipeline and an exhaust hood. A flue gas pipeline is arranged at the inlet of the flue gas fan and communicated with an external roasting furnace. The outlet of the flue gas fan is communicated with a plurality of heat exchange pipelines. The top ends of the heat exchange pipelines are jointly communicated with the exhaust hood. A flue gas outlet pipe is arranged at the top of the exhaust hood, and an outlet valve is arranged on the flue gas outlet pipe. It is characterized in that: a converging throat is arranged in the middle of the heat exchange pipeline, and a diffusor wall with horizontal displacement is arranged above the throat. The advantages of the present invention compared with the prior art are as follows: by performing heat exchange while pressurizing the flue gas flow, the water vapor contained in the flue gas can be liquefied and release heat, and its latent heat of vaporization can be fully released and absorbed. For the field to which the present invention is applied, the latent heat of vaporization can be used to heat mother liquor and flat plate washing water, saving the steam cost for heating flat plate washing water, reducing energy consumption and reducing emissions.

Embodiments of this application provide a fluid collector, a thermal management assembly, a battery, and an electric apparatus. The fluid collector is applied to the thermal management assembly of the battery and includes a housing and a separation portion. The housing has a fluid collecting chamber, where the fluid collecting chamber is configured to be connected to a plurality of heat exchange channels in the thermal management assembly. The separation portion is provided on the housing to partition the fluid collecting chamber into a plurality of concave cavities. The plurality of heat exchange channels are connected in series and communicate with each other through the plurality of concave cavities. This can alleviate non-uniform heating of a battery cell caused by provision of a single cavity in a fluid collector, enhancing the heat exchange effect of the battery cell and reducing the risk of thermal runaway in the battery.

The invention discloses an immersed liquid cooling device, which includes a liquid cooling radiator with a first liquid box at one end thereof combined with the open end of a liquid storage box, so that a heat dissipation radiator pipe set at the other end is immersed in the cooling fluid in the liquid storage box. The liquid storage box is externally equipped with a cooling chip and a heat sink. When the cooling chip is energized, the cooling chip will reduce the cooling fluid in the liquid storage box to a freezing temperature, so that the cooling fluid can quickly cool down the working fluid in the heat dissipation radiator pipe set, thereby preventing the heat dissipation radiator pipe set from being affected by the ambient temperature in its heat dissipation efficiency.

The utility model discloses a left tube plate and right tube plate communicated winding tube bundle structure, which relates to the technical field of winding tube type heat exchangers, and comprises a left tube plate, a central tube, a winding tube component and a right tube plate, the centers of the left tube plate and the right tube plate are provided with communication holes, the left end of the central tube is welded with the left tube plate and communicated with the left communication hole, and the right end of the central tube is welded with the right tube plate. The right end of the central tube is connected with the right tube plate in a welded mode and communicated with the right communication hole so as to communicate the left tube plate with the right tube plate, the central tube is of a combined connection structure of a key and an expansion joint, and the winding tube assembly is connected to the central tube in a sleeved mode and arranged between the left tube plate and the right tube plate. The communicating holes are formed in the left pipe plate and the right pipe plate, and the left pipe plate and the right pipe plate are connected through the central pipe to form a medium channel, so that the purpose of conveying media required by specific purposes is achieved.

The utility model discloses a radiator fin and a heat exchange device thereof, and belongs to the field of radiators. Comprises: a body region; the windward area is arranged on one side of the main body area; the leeward area is arranged on the other side of the main body area; heat exchange through holes are distributed in the main body area and the leeward area, connecting pipes are arranged on the heat exchange through holes, and the connecting pipes are formed by stretching the fins; the main body area is a wave-shaped fin, the windward area is distributed in a wave shape and is provided with a plurality of wave crests and wave troughs, and the leeward area is of a plate-shaped structure and is smoothly connected with the main body area. The radiator fin has the beneficial effects that the surface area is reduced, the airflow resistance is reduced, and the heat exchange efficiency is improved.

The cooling plate assembly comprises a first cooling plate, a second cooling plate and a connecting piece, each of the first cooling plate and the second cooling plate comprises a mounting part, the connecting piece is in sealed connection with the mounting part, the cooling plate assembly comprises a positioning part, and the positioning part limits relative movement of the connecting piece and the mounting part in the assembling direction of the mounting part and the connecting piece; in the assembling direction of the mounting part and the connecting piece, the cooling plate assembly limits the relative movement of the connecting piece and the mounting part through the positioning part, that is, during assembling, the positioning part plays a role in blocking the connecting piece or the mounting part and further plays a role in positioning assembling, and the mounting difficulty is reduced.

The present invention relates to fins and a heat exchanger comprising same. The fin may comprise: a fin body including a tube insertion hole, which is open in a reference direction and is provided such that a tube extending in the reference direction is inserted therein, and an application hole, which is disposed above the tube insertion hole, communicates with the tube insertion hole, and is open in the reference direction; a first protrusion part protruding in the reference direction from a first edge region, which is a region defining the application hole of the fin body; and a second protrusion part protruding in the reference direction from a second edge region, which is a region defining the tube insertion hole of the fin body.

The invention discloses an anti-freezing flow guide device of an air cooling radiator and a direct air cooling system with the anti-freezing flow guide device. The anti-freezing flow guide device comprises an anti-freezing flow guide assembly; the anti-freezing flow guide assembly is suitable for closing and opening an air flow outlet in the upper portion of the air cooling island, the air cooling island comprises a steam distribution pipe and a condensate water pipeline, the steam distribution pipe extends in the first direction, and the condensate water pipeline is arranged on the lower side of the steam distribution pipe; the first finned tubes and the second finned tubes extend in the vertical direction and communicate with the steam distribution pipe and the condensate water pipeline, the multiple first finned tubes and the multiple second finned tubes are alternately arranged in the first direction, and the flowing direction of fluid in the first finned tubes is opposite to that of fluid in the second finned tubes. According to the anti-freezing flow guide device, the first finned tube and the second finned tube can achieve good heating and heat preservation effects, so that the probability that the first finned tube and the second finned tube are frozen and even cracked due to frost is greatly reduced, and the running stability and reliability of a direct air cooling system are better.

The invention relates to the technical field of heat exchange equipment, and discloses a gas-fired boiler equipment power heat exchange device which comprises a heat exchange box, a heat exchange pipe is installed in the heat exchange box, a plurality of heat exchange fins are installed on the heat exchange pipe, and the heat exchange fins are connected through heat conduction fins; the cleaning block is slidably mounted on the heat exchange fins, and a cleaning brush is mounted on the surface, facing the heat exchange fins, of the cleaning block; the driving assembly is mounted in the heat exchange box; through the arrangement of the heat conduction fins, the temperature difference between the windward heat conduction fins and the leeward heat conduction fins can be reduced, and after the heat conduction fins are used for a period of time, the driving assembly drives the cleaning block to rotate, so that the cleaning block slides on the surfaces of the heat exchange fins to clean dirt attached to the surfaces of the heat exchange fins, and it is ensured that each heat exchange fin is in a clean state; the heat exchange fins can conduct heat sufficiently, so that it is guaranteed that the temperature of the heat exchange fins in all the areas is not uneven, and the heat exchange efficiency of the device is effectively improved.

The invention relates to the technical field of heat dissipation pipes and discloses a fin type heat dissipation pipe which comprises a rectangular supporting frame, a plurality of heat dissipation pipe bodies are rotationally connected into the supporting frame, and a shaking mechanism used for driving the heat dissipation pipe bodies to synchronously clean attached dust is arranged at the top of the supporting frame. A power storage mechanism used for driving the shaking mechanism to work is further arranged at the top of the supporting frame, a driving mechanism is arranged at the position, on one side of the power storage mechanism, of the top of the supporting frame, the shaking mechanism is arranged, a rotating rod is used for driving the heat dissipation pipe body to rotate intermittently, attached dust is shaken off in the rotating process of the heat dissipation pipe body, and the dust is cleaned through regular shaking; the surface of the fin can be kept clean, so that the optimal working state of the radiator is ensured, the efficient heat exchange performance is maintained, a method for removing dust through shaking hardly causes damage to equipment, the method does not involve direct contact or use of chemical substances, and the completeness of the radiating pipe and the fin of the radiating pipe can be effectively protected.

The invention discloses a heat pipe, a radiator and electronic equipment. The heat pipe comprises a pipe body, a first capillary structure and a second capillary structure. A containing cavity is formed in the pipe body and used for sealing and storing working fluid. The first capillary structure is attached to the inner pipe face of the pipe body. The second capillary structure is wrapped in the first capillary structure. According to the heat pipe, the first capillary structure with large capillary pressure wraps the second capillary structure with large permeability, so that the composite capillary structure with the high-speed backflow channel is formed in the heat pipe, and the advantages of different capillary structures are fully utilized; and the working fluid in the heat pipe quickly and fully participates in circulating heat transfer of liquid phase-gas phase change, so that the heat transfer performance of the heat pipe is improved.

A spacer device for incorporation into a bent-tube heat exchanger that includes a spine and a plurality of fingers that protrude from one side of the spine. The number of fingers in the spacer device is less than the number of tubes that are folded in a region to form the bent-tube heat exchanger. The plurality of fingers are configured to exert a force against the tubes and to provide and maintain a separation between the tubes in the folded region. A heat exchanger that includes the spacer device may also include a coating on the tubes in the folded region in order to reduce corrosion and increase the life-time of the heat exchanger. The method of forming the heat exchanger includes placing the spacer device between the tubes, such that the fingers lay on the tubes in the region to be folded and assist in the folding process.

The invention provides a heat exchanger and energy storage equipment. The heat exchanger comprises a refrigerant base plate, a plurality of condensation plate heat exchangers and a plurality of evaporation plate heat exchangers, and each condensation plate heat exchanger and each evaporation plate heat exchanger are arranged on the same side of the refrigerant base plate in the first direction. The side face, facing the refrigerant base plate, of each condensation plate exchanger comprises a refrigerant inlet and a refrigerant outlet, the side face, facing the refrigerant base plate, of each evaporation plate exchanger comprises a refrigerant inlet and a refrigerant outlet, and the refrigerant base plate comprises two condensation refrigerant flow channels and two evaporation refrigerant flow channels. One of the two condensation refrigerant flow channels is used for being communicated with a refrigerant inlet of each condensation plate heat exchanger, and the other condensation refrigerant flow channel is used for being communicated with a refrigerant outlet of each condensation plate heat exchanger. One of the two evaporation refrigerant flow channels is used for communicating with the other condensation refrigerant flow channel and a refrigerant inlet of each evaporation plate heat exchanger, and the other evaporation refrigerant flow channel is used for communicating with a refrigerant outlet of each evaporation plate heat exchanger. The refrigerating capacity of the heat exchanger can be improved.

A heat dissipation device includes a vapor chamber (1) and at least one heat pipe (2). The vapor chamber (1) includes a bottom plate (10) and a top plate (11) combined with each other to form a cavity (100); the cavity (100) contains a top plate capillary layer (11a) covering the top plate (11) which has at least one through hole (110). The heat pipe (2) includes a pipe body (20) with a closed end (200) and an open end (201) fixed in the through hole (110), and a pipe capillary layer (21) with a connecting portion (210). The top plate (11) includes at least one protrusion (111) corresponding to the through hole (110) and having a receiving portion (111a) recessed inside the top plate (11), and a capillary structure (11b) in the receiving portion (111a) and contacting with the connecting portion (210) and top plate capillary layer (11a).

The present invention relates to a device for storing electricity and high-temperature energy. The purpose of the present invention is to provide a device for storing electricity and high-temperature energy, which can efficiently store both high-temperature energy and electric energy of various qualities, and which can be operated and managed conveniently such that same can be utilized in a range substantially wider than that of conventional devices. More specifically, the purpose of the present invention is to provide a device for storing electricity and high-temperature energy, which operates in such a manner that an operating fluid that is easy to handle, such as water or air, is used to directly store thermal energy in a thermal storage medium with a high-temperature operating fluid, or electric energy is converted into thermal energy, which is stored in a thermal storage medium, and the thermal energy is recovered, if necessary, with a low-temperature operating fluid.

A heat exchanger includes: a plurality of flat heat transfer tubes each having an elongated cross-sectional shape, each including refrigerant flow passages therein, and arranged apart from and in parallel with each other; and corrugated fins each provided between associated adjacent ones of the flat heat transfer tubes. Each of the corrugated fins has fin portions each having a plate shape, and is bent into a wave shape such that the fin portions are arranged alongside of each other in an axial direction of the flat heat transfer tubes. The fin portions include louvers. The louvers are made as different types of louvers to have different configurations, such that the different types of louvers are provided at respective selected sets of fin portions, to thereby cause different amounts of frost to be formed on the fin portions.

The utility model relates to the technical field of air compressor heat recovery, and discloses a heat recovery pipeline device for a screw air compressor, which comprises a bottom plate, a shell and an air compressor main body, the shell is fixedly connected with the bottom plate, a support seat is arranged on one side of the shell, the air compressor main body is mounted at the upper end of the support seat through a fastener, and the air compressor main body is fixedly connected with the bottom plate. According to the air compressor, heat generated during working of the air compressor body is transmitted to the multiple sets of heat conducting fins below through the heat conducting blocks, and then the heat is effectively transmitted to gas passing through the spiral pipe through the multiple sets of heat conducting fins; then heated gas enters a heat conduction coil pipe through a conveying pipe and a gas inlet pipe, a motor drives a stirring column to rotate through an output shaft, multiple sets of stirring blades on the stirring column stir water, under cooperation of a plurality of threaded groove holes, flowing of the water in the water storage tank is accelerated, the water is fully heated, and the recovery efficiency is improved.

Embodiments of the present application provide a heat exchanger, a heat dissipation module, and a computing device. The heat exchanger comprises a first housing, a second housing, and a main body portion, wherein the first housing and the second housing are fixedly connected to two ends of the main body portion; the first housing is provided with at least two independent chambers; the second housing is provided with at least one independent cavity; the main body portion comprises at least two flow channel portions; an inlet of the heat exchanger is communicated with one chamber, an outlet of the heat exchanger is communicated with the other chamber or the cavity, and each flow channel portion is communicated with one of the at least two chambers and one of the at least one cavity, so that a heat exchange medium flowing in through the inlet can flow out of the outlet after sequentially flowing through the flow channel portions. By optimizing the structure of the heat exchanger, the route of the heat exchange medium in the heat exchanger is increased, the heat exchange of the heat exchange medium is more sufficient, and the heat exchange efficiency of the heat exchanger can be improved.