46 results about "Counter flow" patented technology

A plate type gas-gas heat exchanger (400) comprises a casing (402) having a first end (402a) and a second end (402b). A first fluid inlet (404) and a second fluid outlet (410) are configured in a first portion (402a-1) and a second portion (402a-2) of the first end (402a). The first fluid inlet (404) receives a first fluid (F1). A second fluid inlet (406) and a first fluid outlet (408) are configured in a first portion (402b-1) and a second portion (402b-2) of the second end (402b) respectively. The second fluid inlet (406) receives a second fluid (F2). The first and second fluid outlets (408, 410) allows exit of the first and second fluids (F1, F2) respectively from the heat exchanger (400), after heat exchange. The first and second fluid (F1, F2) flow in opposite directions, creating a true counter-current flow pattern across an entire length of the heat exchanger (400).

This utility model discloses a counter-flow cooling tower, including a cooling tower shell, a fan installed on the top of the cooling tower shell, and packing material inside the cooling tower shell. A disassembly and assembly mechanism is provided inside and at the front of the cooling tower shell. The disassembly and assembly mechanism includes a connecting plate fixedly connected to the front of the packing material, and a strip-shaped cylinder fixedly connected to the front of the connecting plate. Through the disassembly and assembly mechanism, utilizing the sliding cooperation between the connecting plate and the fixed square rod, and the guiding support of the slider for the packing material, the packing material can be directly pulled out or inserted along the fixed square rod, avoiding the cumbersome disassembly process of bolt tightening or custom clips in traditional structures. Simultaneously, the spring inside the strip-shaped cylinder, along with the buckle plate and the clip plate, forms an automatic locking structure. During replacement, only the buckle plate needs to be pressed and the clip plate slid, allowing disassembly and assembly to be completed without professional tools, significantly reducing downtime for maintenance.

The present application relates to longitudinal finned tube heat exchanger with built-in heat exchange sleeve and nozzle and its cooling tower, comprising heat exchange array with several longitudinal finned tube heat exchange units, flow divider, sprinkling water distributor, liquid collector. By setting heat exchange tube for counter flow heat exchange inside longitudinal finned tube, the heat exchange efficiency of heat exchanger is greatly improved, by setting upper connection assembly with uniform sprinkling on longitudinal finned tube, the uniformity and surface film forming property of sprinkling water are improved, so that the comprehensive heat exchange performance of heat exchanger in indirect evaporation process is greatly improved. The closed cooling tower prepared by using the longitudinal finned tube heat exchanger of the present application has the advantages of small volume, large refrigerating capacity and the like.

An isolation core is used to isolate an air conditioning (AC) unit and an external environment such as an enclosure to be cooled. An isolation core may take the form of a cross-flow or counterflow heat exchanger which acts to thermally couple the flows of an AC unit and an enclosure air inlet and return without permitting the flows to intermix. The isolation core thus facilitates cooling of enclosures while isolating flammable refrigerant from the enclosure air, requiring the refrigerant to remain within the AC unit even if an interior component of the AC unit such as a cooling coil, etc., leaks.

To provide an apparatus (100) for thermal energy storage and conduction.SOLUTION: The apparatus (100) includes a thermal energy input device (1) having a bed of fluidizable solid particles received in a casing and exposed to a thermal energy source to function as a heat storage means, a heat exchange means (3) operating in counter-current flow and configured for exchange of thermal energy between a heated vector mass of the bed particles and a working fluid, a transport means (5) configured for supplying the vector mass of the bed particles from the device (1) to the heat exchange means (3) and for returning at least part of the vector mass to the device (1) downstream of the heat exchange means (3), and a control unit (10) associated with a parameter detection means (6).SELECTED DRAWING: Figure 4

A gas treatment component includes a cross-flow heat exchanger and a counter-flow heat exchanger arranged in series with the cross-flow heat exchanger. The cross-flow heat exchanger and the counter-flow heat exchanger each include a core having a stack of heat exchanger plates, and the heat exchanger plates of the cross-flow heat exchanger form first channels for a first gas flow passing the cross-flow heat exchanger and form second channels for a second gas flow passing the cross-flow heat exchanger. A first distance between neighbouring heat exchanger plates forming the first channels is smaller than a second distance between neighbouring heat exchanger plates forming the second channels. The cross-flow heat exchanger includes a second outlet for the second gas flow to leave the cross-flow heat exchanger and a deflector plate for deflecting a portion of the second gas flow leaving the cross-flow heat exchanger at the second outlet.

An isolation core is used to isolate an air conditioning (AC) unit and an external environment such as an enclosure to be cooled. An isolation core may take the form of a cross-flow or counterflow heat exchanger which acts to thermally couple the flows of an AC unit and an enclosure air inlet and return without permitting the flows to intermix. The isolation core thus facilitates cooling of enclosures while isolating flammable refrigerant from the enclosure air, requiring the refrigerant to remain within the AC unit even if an interior component of the AC unit such as a cooling coil, etc., leaks.

The utility model discloses a counter flow type cooling tower, which comprises a frame structure and a cooling tower body arranged on the frame structure, an air duct, a water collector, a water distribution system and a filler are sequentially arranged along the cooling tower body from top to bottom, a fan is arranged in the air duct, the filler comprises a filler layer with an S-wave-shaped surface, and the surface of the filler layer is provided with a water inlet and a water outlet. The wave crest and the wave trough of the S wave form are arc-shaped, and the extending direction of the S wave is consistent with the water flow direction and the air flow direction; according to the utility model, not only is the heat exchange efficiency higher, but also dirt, impurities or sediments are not easy to accumulate between wave crests and wave troughs of the filler, water flow blockage caused by blockage is avoided, and the cooling efficiency is ensured.

The utility model relates to the technical field of heat exchanger, propose a kind of stepped countercurrent subsection heat exchange device and the application of water heater thereof, stepped countercurrent subsection heat exchange device, including heat exchange main part, the heat exchange main part includes heat exchange area and heat exchange pipeline;Heat exchange area is equipped with several sections, several heat exchange areas are communicated with each other and mutually independent interval arrangement, and heat exchange pipeline connected with each other is equipped in each heat exchange area;Heat exchange pipeline is equipped with the heat insulation pipe for preventing the heat transfer between adjacent two heat exchange areas, to make the cold, hot fluid of each heat exchange area realize mutual non-interference in heat exchange process, and independent heat exchange, and each heat exchange area is formed heat transfer separation by heat insulation pipe, and the stepped temperature difference is formed between each heat exchange area.The subsection design of heat exchange area avoids the overall temperature difference homogenization problem caused by heat diffusion of traditional device, and heat exchange pipeline completes efficient heat exchange independently in each heat exchange area, improves overall heat exchange efficiency.

The invention relates to the technical field of air conditioners, in particular to an air conditioning system. The CO2 heat pump air conditioning system aims at solving the problem that an existing CO2 heat pump air conditioning system is poor in refrigeration effect and heat exchange effect. In order to achieve the purpose, the air conditioning system comprises a refrigerant circulating system and a liquid circulating system, the refrigerant circulating system comprises a compressor, an ejector, a first outdoor heat exchanger, a second outdoor heat exchanger, a third outdoor heat exchanger and the like, and the liquid circulating system comprises a first indoor heat exchanger and the like. Liquid in the liquid circulation system sequentially flows through the second outdoor heat exchanger and the third outdoor heat exchanger for heat exchange and then enters the first indoor heat exchanger, the second outdoor heat exchanger and the third outdoor heat exchanger can be used for refrigeration, and the flowing directions of refrigerants and the liquid in the two outdoor heat exchangers are opposite. The heat exchange effect between the liquid and the refrigerant can be improved through countercurrent flow heat exchange, and the refrigeration effect of the air conditioning system is further improved.

The invention provides a reverse flow type fog dissipation peak wet air cooler which comprises a box body, an evaporation coil pipe and a peak device are arranged in the box body, and the evaporation coil pipe and the peak device are arranged in a mutually isolated mode through a flow dividing partition plate arranged in the box body; a rhombic fog dissipation filler is arranged above the inner cavity of the box body, and a hot air channel of the rhombic fog dissipation filler is communicated with a cavity where the evaporation coil is located; a cold air channel of the rhombic fog dissipation filler is communicated with the cavity where the peak device is located, and the cold air channel is not communicated with or partially communicated with the cavity where the evaporation coil is located; through the synergistic effect of the counter-flow peak device and the evaporation coil, the heat exchange efficiency is remarkably improved in the high-temperature or load peak period, stable operation of the system is guaranteed, efficiency reduction caused by insufficient cooling is avoided, the rhombic fog dispersal filler and multi-channel airflow mixing design is adopted, wet and hot air and cold air are fully mixed for cooling, the relative humidity is reduced, and the energy consumption is reduced. Generation of rime fog is effectively inhibited, and environmental pollution and visual potential safety hazards are reduced.

The invention belongs to the technical field of heat pump energy storage, and discloses an integrated absorption heat storage CO2 heat pump energy storage system and an operation method thereof.The integrated absorption heat storage CO2 heat pump energy storage system comprises a CO2 heat pump cycle, an absorption heat storage cycle and a heating water flow water.The absorption heat storage cycle comprises an absorbent storage tank (1), a refrigerant storage tank (2) and a finned tube heat exchanger (9); the CO2 heat pump cycle is a loop formed by connecting components including an absorbent storage tank (1), a first countercurrent heat exchanger (4), a second countercurrent heat exchanger (5), an expansion valve (6), an evaporator (7) and a compressor (8); and the heating water flow path is a flow path formed by connecting the first countercurrent heat exchanger (4) and the second countercurrent heat exchanger (5) with the hot water storage tank (3). Compared with the prior art, the problems of insufficient heat energy utilization and low heat storage efficiency of the CO2 heat pump can be solved.

The invention discloses a full-flow-channel zero-bypass concentric sleeve reverse flow type heat exchanger, and belongs to the technical field of heat exchange equipment. According to the heat exchanger, the fluid bypass problem existing in a tubular heat exchanger is fundamentally eliminated, fluid participating in heat exchange completely flows in the closed pipeline in the pure axial direction, two-strand or multi-strand pure countercurrent flow heat exchange can be achieved through reasonable process arrangement, the logarithmic average temperature difference correction coefficient approaches to 1, design is easy and convenient, and calculation is accurate and reliable. The heat exchanger integrates the advantages of a traditional tubular heat exchanger, a plate-fin heat exchanger, a lamella heat exchanger, a plate-type heat exchanger and a double-pipe heat exchanger, overcomes the defects of the traditional tubular heat exchanger, the plate-fin heat exchanger, the lamella heat exchanger, the plate-type heat exchanger and the double-pipe heat exchanger, is suitable for heat exchange of various media and complex working conditions, and can realize micro-channel and large-scale.

The application discloses a kind of wind energy air water taking device, mainly including power and flexible transmission module, compression and precooling gas storage module, condensation water taking module, collection and depth purification module and independent energy storage control unit.The core is to use high-pressure proportional shunt valve to divide high-pressure wet air into two ways: one way is expanded through vortex tube to produce extremely cold gas and is introduced into sleeve type counterflow heat exchanger outer tube;The other way is kept in high-pressure state into heat exchanger inner tube, and a large amount of condensed water is condensed and separated instantaneously under the countercurrent quenching of cold gas, which fundamentally eliminates the ice blockage hidden trouble caused by direct pressure reduction;In addition, the system realizes wind power self-adaptive no-load starting through centrifugal clutch and unloading valve linkage, and uses coaxial microgenerator to provide closed-loop power for water quality ultraviolet sterilization component;The application does not need external power grid support, and can efficiently and stably produce safe direct drinking water in extreme environment.

The invention discloses a low-backpressure vacuumizing optimization structure and method for a high-countercurrent-ratio NDACC system, and relates to the energy-saving technology of air cooling systems, and the low-backpressure vacuumizing optimization structure and method for the high-countercurrent-ratio NDACC system are characterized in that the low-backpressure vacuumizing optimization structure comprises a cooling unit, a vacuumizing pipeline system and a vacuum pump set; each cooling unit comprises a plurality of cooling triangles, at least one cooling triangle in each cooling unit is set as a countercurrent area, the other cooling triangles are set as downstream areas, the number ratio of the cooling triangles in the downstream areas to the cooling triangles in the countercurrent areas is not smaller than 2: 1 and not larger than 4: 1, and the downstream areas and the countercurrent areas are provided with electric shutters respectively; the tops of the cooling triangles of the downstream area are communicated with one another through a first pipeline, the bottoms of the cooling triangles of the downstream area are communicated with the bottoms of the cooling triangles of the countercurrent area through a second pipeline, the countercurrent area of each cooling unit is provided with a vacuumizing connector, and the vacuumizing connectors are connected to a vacuum pump set through a vacuumizing pipeline system. The exhaust efficiency of non-condensable steam under the low-back-pressure working condition is effectively improved, and the operation back pressure and freezing risk are reduced.

The application relates to the field of heat exchangers, in particular to a pure counterflow heat exchanger for tube and shell processes, which comprises a front-end tube box, a tube process inlet is fixedly communicated with the outer wall of the top end of the front-end tube box; a fixed tube plate is fixedly communicated with the right end of the front-end tube box; a shell process cylinder is fixedly communicated with the right end of the fixed tube plate, a shell process inlet is fixedly communicated with the top of the right end of the shell process cylinder, a shell process outlet is fixedly communicated with the bottom of the left end of the shell process cylinder; a rear-end tube box is fixedly communicated with the right end of the shell process cylinder; the tube process inlet is arranged at the left end and the tube process outlet is arranged at the right end, so that the same fixed tube plate is prevented from being simultaneously contacted with the inlet medium and the outlet medium and from having an excessively large temperature difference, the heat exchange effect is improved, an expansion joint is further arranged, the tube bundle can freely stretch and shrink along the axial direction, and the axial stress between the tube process and the shell process is reduced.

The invention discloses a heat exchange sheet manufacturing method, a heat exchange sheet and a reverse flow type heat exchanger, the heat exchange sheet manufacturing method comprises a metal plate pretreatment process, a metal net manufacturing process, a compounding process, a cutting process and an injection molding process, through the metal plate pretreatment process, dense copper columns can be formed on the surface of a metal plate; therefore, the composite contact area of the metal net and the moisture-permeable film is increased, the binding force between the metal net and the moisture-permeable film is increased, the metal net and the moisture-permeable film are not prone to being separated, and the reliability of the heat exchange piece during application is improved.

The application firstly provides a shell-and-tube heat exchanger based on M cycle, which comprises a heat insulation shell, a plurality of coaxial heat conducting cylinders are arranged in the heat insulation shell, the heat conducting cylinder comprises an inner cylinder and an outer cylinder which are coaxially arranged and have open ends, a gap is arranged between the inner cylinder and the outer cylinder, a gap is arranged between adjacent heat conducting cylinders, the gap between the inner cylinder and the outer cylinder of each heat conducting cylinder forms a dry channel, the gap between adjacent two heat conducting cylinders forms a wet channel, a flow dividing area is arranged at one end of the dry channel outlet in the heat insulation shell, and a water film is arranged on the outer cylinder at one side of the wet channel. The countercurrent refrigeration channels between different layers can absorb heat and promote the refrigeration process during work, the refrigeration effect is enhanced, the cooling range is large, the M cycle principle refrigeration is realized by a more compact tubular mechanism, and larger refrigeration capacity can be obtained under unit volume. The application further provides an air conditioner.

The utility model discloses a reverse flow type multi-stage heat exchange system which comprises a first-stage heat exchange unit, a second-stage heat exchange unit and a third-stage heat exchange unit, and medium inlets and outlets and heat exchange inlets and outlets of the three heat exchange units are respectively communicated. A first-stage heat exchange inlet is formed in the first-stage heat exchange unit and is connected with the first-stage heat exchange unit through a conical diffuser and a honeycomb guide plate; a second-stage heat exchange inlet is formed in the second-stage heat exchange unit, and the second-stage heat exchange inlet is connected with the second-stage heat exchange unit through a Venturi nozzle; a plurality of first-stage heat exchange pipes are arranged in the first-stage heat exchange unit and are corrugated pipes, a plurality of second-stage heat exchange pipes are arranged in the second-stage heat exchange unit and are spiral fluted pipes, and a plurality of third-stage heat exchange pipes are arranged in the third-stage heat exchange unit and are finned pipes. Cold fluid and hot fluid are arranged in a cross countercurrent mode, the device is efficient, flexible, high in adaptability, simple in structure, convenient to maintain, low in cost and capable of achieving low-temperature waste heat recovery, and comprehensive energy efficiency is greatly improved.

The application relates to a container type counter-flow closed cooling tower system and belongs to the technical field of cooling equipment. The system comprises a container box body, shallow layer water tanks are arranged in the box body from bottom to top, a multistage guide plate assembly, filler, heat exchange pipe bundles, a spraying system, a water collector and a fan assembly are arranged in the box body. The integrated shallow layer water tank is provided with a water collecting hopper formed by an inclined bottom plate and a submersible pump, low water level emptying prevention is realized, the pipe box type heat exchange pipe bundle realizes medium reversing through a built-in return cavity in the pipe box, external U-shaped elbows are omitted, the pipe row spacing is reduced, the unit volume heat exchange area is improved, the guide plate assembly considers water splash prevention and uniform air inlet, the spraying system adopts a dense nozzle array and a primary-secondary pipe structure, uniform spraying in a short spraying distance is ensured, and the fan adopts a draft tube-free EC axial flow fan, installation space is saved. The application can realize efficient and stable cooling in the limited height of a standard container, has the characteristics of high integration, good cooling effect and reliable operation, and is suitable for various temporary cooling scenes.

The utility model provides a reverse flow type heat exchange device. The reverse flow type heat exchange device comprises a tower body, a heat exchange tube bundle and an injection mechanism, the heat exchange tube bundle is arranged in the tower body in the vertical direction, a circulating water inlet is formed in the lower end of the heat exchange tube bundle, and a circulating water outlet is formed in the upper end of the heat exchange tube bundle; the spraying mechanism comprises nozzles, a conveying pipeline and a high-pressure spraying pump, a plurality of nozzles used for spraying water to the outer surface of the heat exchange tube bundle are distributed outside the heat exchange tube bundle, and each nozzle is communicated with the high-pressure spraying pump through the conveying pipeline. The water-water heat exchanger has the advantages that a high-pressure jet thin water film can be formed between external circulating water and the heat exchange tube bundle, and internal circulating water and the external circulating water are in a reverse flow type, so that the water-water heat exchange efficiency can be greatly improved.

A plate type gas-gas heat exchanger (400) comprises a casing (402) having a first end (402a) and a second end (402b). A first fluid inlet (404) and a second fluid outlet (410) are configured in a first portion (402a-1) and a second portion (402a-2) of the first end (402a). The first fluid inlet (404) receives a first fluid (F1). A second fluid inlet (406) and a first fluid outlet (408) are configured in a first portion (402b-1) and a second portion (402b-2) of the second end (402b) respectively. The second fluid inlet (406) receives a second fluid (F2). The first and second fluid outlets (408, 410) allows exit of the first and second fluids (F1, F2) respectively from the heat exchanger (400), after heat exchange. The first and second fluid (F1, F2) flow in opposite directions, creating a true counter-current flow pattern across an entire length of the heat exchanger (400).

The invention discloses a countercurrent modular packed bed heat storage system and a heat storage and heat release control method thereof.The heat storage system comprises a plurality of heat storage units, each heat storage unit achieves heat storage and heat release, and during heat storage, the temperature of fluid at an outlet of the first heat storage unit is maintained to be low for a set time and then gradually rises; when the temperature of the fluid at the outlet rises to a set value, the fluid enters the next heat storage unit to continuously and fully release heat; the heat storage is completed by sequentially pushing forwards according to the mode; in the whole process, when a certain heat storage unit is completely filled with heat, the heat storage unit is controlled to stop heat storage; in the heat release process, when the temperature of the fluid at the outlet of the first heat storage unit is reduced to the set temperature, the fluid at the outlet of the first heat storage unit is connected into the next heat storage unit to continuously absorb heat; and in the whole process, when a certain heat storage unit completely releases heat, the heat storage unit is controlled to stop heat storage.

To provide an air conditioning system that can be miniaturized and improve energy consumption efficiency. [Solution] The medium flow path comprises a cold air flow path through which the medium is cooled by heat absorption by a heat exchanger, and a hot air flow path through which the medium is heated. The air conditioning device includes a drive mechanism that drives the extension to move alternately within the cold air flow path and the hot air flow path, and a mechanism that controls the temperature T of the medium introduced into the first inlet. 11 The temperature T of the medium introduced into the second inlet 12 , the temperature T of the medium discharged from the first outlet 21 , or the temperature T of the medium discharged from the second outlet 22 The system includes a temperature acquisition unit that acquires the temperature of the medium, and based on the temperature of the medium acquired by the temperature acquisition unit, it controls the residence time of the extension in the cold air passage and / or the hot air passage, or controls the movement direction of the extension in the cold air passage and / or the hot air passage between parallel flow and counter-flow.

The invention relates to the technical field of pressure regulating devices for staged pressure reduction, in particular to a pressure regulating device based on countercurrent flow heat exchange and staged pressure reduction. And the pressure adjusting assembly comprises a first input pipe and a second input pipe which are symmetrically arranged in the box body, and a first pressure reducing valve and a first heat exchanger are fixedly installed in the first input pipe in a linear array mode. Gas-liquid two-phase flow is accurately separated through the cyclone separator, and the mixing state is monitored in real time in combination with the gas-liquid detection element; when proportion imbalance is detected (too much liquid phase causes insufficient heat exchange or too much gas phase reduces condensation efficiency), a controller automatically starts a phase splitting-mixing process, a lifting box ascends to compress a corrugated compression pipe to enable the gas phase to be atomized and sprayed into the liquid phase, and stirring teeth driven synchronously strengthen mixing uniformity; the pressure regulating element pressurizes the working medium to the pressure required by the second-stage pressure reducing valve, the problem of second-stage pressure reducing pressure fluctuation caused by gas-liquid imbalance of a traditional system is thoroughly solved, and efficient operation of the second heat exchanger is guaranteed.

A steam medium frequency heat storage power generation system, comprising a steam medium frequency heat storage power generation system, characterized by the steam medium frequency heat storage power generation system comprising a low-temperature hot water tank, a high-temperature hot water tank, a molten salt energy storage device, a counterflow heat exchanger, a compressor, an expander, a generator, four electromagnetic valves and connecting pipelines therebetween; the low-temperature hot water tank is communicated with the inlet of the compressor and the outlet of the expander; the outlet of the compressor and the inlet of the expander are communicated with one end of the counterflow heat exchanger steam channel; the other end of the counterflow heat exchanger steam channel is communicated with the high-temperature hot water tank. The application adopts water vapor as the working medium and liquid molten salt as the heat storage medium, realizes phase change access to heat energy through the design of high-temperature and low-temperature hot water tanks and the variable working condition of the compressor and the expander, improves the energy storage power generation efficiency, and is easy to implement commercially.

The utility model provides a heat exchanger shunting device which solves the problems that a small-diameter radiating pipe is prone to scaling in the using process, the flow speed of fluid is affected, the heat exchange efficiency is reduced, frequent shutdown for cleaning and maintenance is needed, and equipment operation is affected. The double-flow-path reverse flow path is arranged to form two-time cross heat exchange with shell pass fluid, the heat exchange efficiency can be improved, the two flow channels are independent of each other, starting and stopping of the two flow channels can be freely adjusted according to the temperature requirement, energy is saved, meanwhile, single-side mechanical cleaning is allowed under the condition that operation is not stopped, and the heat exchange efficiency is improved. And the other side is maintained to operate, so that the downtime is reduced, the problem of scaling can be solved on the premise of not changing the pipe diameter and energy consumption, and meanwhile, the operation of equipment is not influenced.

The invention discloses a tube box type heat exchanger based on single-stage parallelism, and belongs to the technical field of heat exchangers, the tube box type heat exchanger is formed by arranging a plurality of tube boxes of single-stage structures side by side, each tube box comprises a shell, and a plurality of heat exchange tubes used for guiding a high-temperature medium to flow are arranged in the shell in an array mode; a low-temperature medium channel used for guiding a low-temperature medium to flow is formed between the outer wall of the heat exchange pipe and the shell, and the flowing direction of the high-temperature medium is opposite to that of the low-temperature medium in a heat exchange area except an inlet and an outlet of the low-temperature medium channel in the shell so that a countercurrent flow heat exchange structure can be formed. The low-temperature medium channel inlet is close to the bottom end of the tube box, the low-temperature medium channel outlet is close to the top end of the tube box, and the high-temperature medium inlet and the high-temperature medium outlet are located at the bottom end of the tube box. The problems that an existing heat exchanger is large in occupied space and inconvenient to overhaul are at least solved.

The utility model provides a reverse flow type spiral shell and tube heat exchanger. The reverse flow type spiral shell and tube heat exchanger comprises an outer shell, a heat exchange core and a center shaft. A regeneration solution or a dehumidification solution enters the outer shell from the liquid inlet and is discharged from the liquid outlet, the dehumidification solution or the regeneration solution enters the heat exchange core from the liquid inlet pipe and is discharged from the liquid outlet pipe, and the flow direction of the dehumidification solution or the regeneration solution entering the heat exchange core is opposite to the flow direction of the regeneration solution or the dehumidification solution entering the outer shell. The heat transfer efficiency is improved in a reverse flow mode of the inner pipe and the outer pipe, the spiral flow guide ribs arranged on the center shaft play a flow guide role, liquid turbulent flow is increased, then the heat exchange efficiency is further improved, solution reverse flow efficient heat exchange can be achieved, cost is low, and batch production is facilitated.