CN114087898A

CN114087898A - Accordion type heat exchanger and application

Info

Publication number: CN114087898A
Application number: CN202110650245.9A
Authority: CN
Inventors: 刘福贵; 刘磊
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-07
Filing date: 2021-06-07
Publication date: 2022-02-25
Also published as: WO2022257444A1; CN115930643A

Abstract

The invention relates to an accordion type heat exchanger, which is characterized in that a thin plate is punched, repeatedly folded and stacked together to form a plurality of first flow channels and second flow channels of a long and narrow accordion, sealing plates and sealing strips are used for respectively plugging the flow channels and the corresponding end parts of the accordion to form flow channel inlets and outlets, inlet and outlet collection boxes are arranged on the flow channel inlets and the flow channel outlets, and therefore, the accordion type heat exchanger which is formed by exchanging heat between second heat exchange channels through a first heat exchange channel can be formed, and a device with various structures and functions can be formed.

Description

Accordion type heat exchanger and application

Technical Field

The invention relates to the technical field of engineering thermophysics and energy conservation, in particular to an accordion heat exchanger and application thereof.

Background

The heat exchanger is a key device which is widely applied to the national economy field and is closely related to human life for saving energy and reducing consumption, the performance, the quality and the cost of the heat exchanger used at present have the problems or the problems, such as poor reliability of the inlet and the outlet of the micro-channel plate type heat exchanger, unbalanced integral heat load and high cost due to cross-flow heat exchange, high material consumption and cost due to the fact that the fin plate (tube) type heat exchanger is suitable for heat exchange between gas and liquid, high energy consumption due to large side flow resistance of fins, difficult formation of variable cross-section flow channels of an evaporator and a condenser, waste heat recovery, especially unsuitable high-temperature working conditions, the tail gas purification device of an internal combustion engine cannot regulate the temperature so as to lead the tail gas purification device not to work in cold starting, generate crack loss due to high-temperature fusing and thermal stress in regeneration, and have poor low-temperature catalytic reduction effect, and the civil air conditioner only regulates the temperature of indoor and outdoor transportation of heat but does not utilize the heat and does not regulate fresh air, Especially, in more places, people directly ventilate by using a fan in winter without recovering heat, the residual heat refrigeration is also huge in devices, or the refrigeration performance and the cost performance are low, and the like, which cannot be used practically and has no heat pump with real significance, so that the problems are solved, the energy utilization rate is improved, and the carbon peak-reaching goal is realized early.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the primary original surface accordion type heat exchanger has the advantages of high heat transfer coefficient and reliability, large heat exchange area and mechanical strength of unit structure, small overall flow resistance of the heat exchanger, suitability for heat transfer of different working media, capability of realizing mechanized continuous production, less material consumption, low manufacturing cost, strong market competitiveness, higher efficiency, compactness and low price.

In order to achieve the purpose, the invention adopts the following technical scheme: an accordion open type heat exchanger for exchanging heat between second open type heat exchange passages by a first heat exchange passage which is mainly formed by taking an accordion flow passage as a main structure comprises an accordion, a seal plate, a first inlet collection box with a general inlet and a first outlet collection box with a general outlet; the accordion is a heat exchange structure, a plurality of heat exchange surface units with the same area and the same interval are arranged on a metal thin plate according to the same length, and are repeatedly folded after being punched into various shapes, and all the folded heat exchange surface units are connected and stacked together, the heat exchange surface units of the heat exchange flow channel are parallel to each other to form a square heat exchange structure with the cross sections of the flow channels at two sides being long and narrow rectangles, the heat exchange surface units are not parallel to each other to form a sector ring body or a cylinder heat exchange structure with at least one side being long and narrow sector ring shape, and the widths of the heat exchange flow channels at two sides of the sector ring body and the cylinder heat exchange structure are unequal; the distance between the two heat exchange surface units of the first runner is the width of the first runner, the bending part of the two heat exchange surface units of the second runner is the crest of the first runner, the distance between the two heat exchange surface units of the second runner is the width of the second runner, the bending part of the two heat exchange surface units of the second runner is the crest of the second runner, the vertical distance between the crest of the adjacent first runner and the crest of the second runner is the height of the runner, and the width of the thin plate is the length of the runner; a plurality of first flow channels and second flow channels in the shape of accordion long narrow are connected and stacked together at intervals to form a compact accordion heat exchange structure.

The heat exchange surface units are heat exchange wall surfaces forming heat exchange flow channels of the accordion, one surface of one heat exchange surface unit is positioned in the flow channel at one side, and the other surface of the heat exchange surface unit is positioned in the flow channel at the other side, one characteristic of the heat exchange surface unit is that mass transfer (heat transfer working medium) is isolated and the heat transfer function is simultaneously realized, the heat exchange surface units are folded and connected together after being punched into various shapes, so that no leakage problem exists in the flow channel formed by the folding and the stacking of the heat exchange surface units, the wall surface shape of each heat exchange surface unit formed at one side of the thin plate is in the flow channel at one side after being punched and folded, and the wall surface shape of each heat exchange surface unit at the other side is in the flow channel at the other side, so that the two surfaces of the thin plate can be punched into the wall surfaces of the heat exchange surface units with different up-down and up heights after being folded and stacked together, the width of the flow channel at one side with up-down and up-down heights is wider than the flow channel at the other side with up-down heights, namely, the heat exchange structures with different widths of the runners at the two sides are formed; therefore, the wall surface of the heat exchange surface unit can be flat, and the wall surface can also be punched into various corrugations (continuous corrugated wall surface, discontinuous corrugated wall surface and the like) or various boss shapes and the like, the heat exchange surface unit can also be in a curved parabolic shape, and the curved parabolic heat exchange surface unit forms a cylindrical heat exchange structure with first flow channels and second flow channels which are equal-width flow channels after being punched, folded, connected and stacked together. In a word, the heat exchange surface units are a plurality of heat exchange surfaces which are arranged on a metal thin plate according to the same length, have the same area and are connected with each other at equal intervals, the wall surfaces of the heat exchange surface units can be corrugated surfaces with straight surfaces, or can be various corrugated surfaces with the same up-down fluctuation height or different shapes, or can be bent parabolic surfaces, the wall surface shapes of the heat exchange surface units formed on one side are stacked together through stamping and folding, and are in flow channels on one side, the wall surface shapes of the heat exchange surface units on the other side are in flow channels on the other side, and the continuous oblique waves of the heat exchange surface units form crossed waves after being folded.

The heat exchange flow channel of the accordion is that a plurality of long and narrow side which are separated by a thin plate and conduct heat with a heat exchange surface unit are first flow channels and the other side is second flow channels which are connected and piled up at intervals to form two side heat exchange flow channels of the compact accordion, the widths of the two side heat exchange flow channels can be equal or unequal, various flow channel structures (straight flow channels, various turbulent flow corrugated flow channels, pressure bearing flow channels such as crossed corrugations and bosses, various flow channels of parabolic shapes and the like) are formed by various wall surfaces of the heat exchange surface unit, and the first flow channel 3 and the second flow channel 4 can be cylindrical heat exchange structures of the same width flow channels after the bent parabolic heat exchange surface unit 2 is folded.

The sealing strip is high-strength temperature-resistant glue or a metal narrow strip and is used for sealing the end part of a flow channel of an accordion, when the end part of the flow channel is sealed by a metal strip, the sealing strip is welded on two sides of a thin plate and is repeatedly folded together with the thin plate to seal the end part of each flow channel, namely the thickness of the sealing strip is 2 times of the width of the flow channel, the thickness of the sealing strip just enables the folding connection to be stacked together and then is equal to the width of the flow channel to be sealed, and the flow channel sealed by the sealing strip is an equal-width flow channel with a flow channel opening on the side surface of the end; the sealing strip is used for sealing the flow channel of the accordion in three modes, wherein the first mode is that the two ends are completely sealed, the second mode is that the two ends of the flow channel on one side of the accordion are sealed, the third mode is alternative sealing, and the specific sealing mode is determined by the arrangement condition of an inlet and an outlet of the flow channel of the accordion and is realized by combining a sealing plate.

The sealing plate is made of metal plates for sealing the flow channels on any side of the accordion, namely the sealing plate is in contact welding with the tooth crest of the flow channel on any side, so that the sealed side flow channels become independent and closed long and narrow flow channels, and the inlet and the outlet of the flow channel are arranged at the end part of the flow channel and seal the two ends of the flow channel on the other side (so as to ensure the independence of the inlet and the outlet of the end part); if the end part of one side flow channel is directly blocked, the inlet and the outlet of the side flow channel are arranged on the end side surface of the flow channel and are arranged at the two ends of the side sealing plate; when the end parts of the flow channels are alternatively plugged, the sealing plates form an inlet and an outlet of the flow channels after plugging, wherein one end of the inlet and the outlet is arranged on the side surface, and the other end of the inlet and the outlet is arranged on the end part, namely the inlet and the outlet of the flow channels on any side are arranged in three modes.

The sealing strip and the sealing plate respectively seal any side flow channel and corresponding end part of the accordion to form inlet and outlet of three flow channels, and an inlet and outlet collection box is arranged on the inlet and outlet collection box; in addition, the shape of the sealing plate is adapted to the overall shape of the accordion flow channel, and the sealing plate can be a plane, a fan ring-shaped or circular plate, a concave shape, an L-shaped or the like, so that various shapes such as a square accordion open type heat exchanger, a fan ring-shaped accordion open type heat exchanger or a cylindrical accordion open type heat exchanger are formed, and the heat exchange planes of the fan ring-shaped and the cylindrical accordion flow channel are positioned on the axial section, so that the cross section of the flow channel on at least one side of the accordion is a micro fan ring with unequal width, and the end part of the flow channel of the micro fan ring is also unequal width and is not suitable to be sealed by a seal.

The collecting box is a box body which is arranged on the inlet and the outlet of the flow passage of the accordion and is used for collecting and distributing heat transfer working medium, the joint of the collecting box and the inlet and the outlet of the flow passage is similar, and because the inlet and the outlet of the first flow passage of the accordion have three arrangement modes, the first inlet collecting box with a main inlet and the first outlet collecting box with a main outlet can be respectively arranged at two ends of the flow passage at any side of the accordion and block two ends of the other flow passage, also can be respectively arranged at two sides of the sealing plate at the side surface of the end and block the end part, and also can be arranged at the side surface of the end part at one end and the end part at the other end.

In summary, the thin plate is punched according to each heat exchange surface unit and is repeatedly folded, and each folded heat exchange surface unit is connected and stacked together to form a plurality of long and narrow accordion-shaped first flow passages and second flow passages which are separated by the thin plate and conduct heat with the heat exchange surface unit, a plurality of first flow passages and second flow passages which are connected and stacked together form an accordion heat exchange main structure, the first flow passages and corresponding end parts of the accordion are respectively sealed by sealing plates and sealing strips to form the inlet and outlet of the side flow passages, and a first inlet collection box with a general inlet and a first outlet collection box with a general outlet are arranged on the inlet and outlet of the side flow passages, thereby forming a first inlet collection box with a main inlet, a first flow channel of the accordion and a first heat exchange passage of the accordion with a first outlet collection box with a main outlet in turn, the accordion open type heat exchanger exchanges heat between the second open type heat exchange passages (the flow channel is not closed); a partition plate can be arranged in an inlet and outlet collection box arranged at the end part or the end side surface of the flow channel to enable the first flow channel of the accordion to form a reciprocating uniform-section flow channel or a reciprocating variable-section flow channel, the gradually-expanding type variable-section flow channel is an evaporative heat exchanger, and the gradually-contracting type variable-section flow channel is a condensing heat exchanger.

The invention has the technical effects that the invention provides the high-efficiency compact primary surface accordion open type heat exchanger which has excellent performance, low cost and wide application, can be used for liquid cooling and heat dissipation, such as cooling and heat dissipation of an internal combustion engine, cooling and heat dissipation of engine oil, cooling and heat dissipation of a fuel cell stack, new energy power wheel motor, electric control heat dissipation and the like, and has the volume and the mass which are reduced by half compared with the applied pipe fins of a radiator and the performance which is improved by nearly 50 percent; the same can be used for cooling and radiating heat of gas, such as exhaust gas recirculation cooling of an internal combustion engine, cooling and radiating heat of charge air and the like; the accordion open type heat exchanger (containing an electrified heat source) can be used for indoor heating in winter and preheating starting of a cold machine of an internal combustion engine, and can utilize an exhaust residual heat source to heat engine oil in a bottom shell of the internal combustion engine in a severe cold area, heat liquid in other containers such as a water tank or an oil tank and the like; the accordion open type heat exchanger is implanted into a ceramic honeycomb carrier and is provided with a tail gas inlet and a tail gas outlet according to the direction of a flow channel for packaging to form an internal combustion engine oxidation purifier or a microparticle trap with cooling or heating, the problems of heating before starting a cold machine to improve the temperature of the oxidation purifier, shorten the light-off temperature time of a catalyst and reduce harmful substance emission are solved, the cooling purifier and the trap prevent high-temperature melting and thermal stress cracking during regeneration, in addition, a plurality of clapboards can be arranged in a collection box to form a back-and-forth turning flow channel with equal cross section and a flow channel with unequal cross section, a gradually expanding flow channel of the flow channel with unequal cross section is used for evaporative heat exchangers such as air conditioners and a gradually contracting flow channel is used for condensing heat exchangers such as air conditioners, and the heat exchangers with the flow channels with variable cross section are particularly suitable for condensing heat exchangers in highways, railways and high-speed moving environments. Moreover, if the first flow channel at one end of the accordion is directly contacted with the second flow channel for heat transfer, the accordion open type heat exchanger is an accordion pre-heat transfer type mixed heat exchanger, and the mixed heat transfer such as steam heating water and the like has no noise; the accordion type heat exchanger, the accordion (open) type heat exchanger, a square body, a fan body or a barrel body and other structures can be formed on the basis of the accordion open type heat exchange structure, the problems existing in the application of the existing heat exchanger are solved, high-efficiency equipment such as a real air-conditioning water heater, a real heat pump device and the like is formed, the heat exchanger can be applied to various industries in the field of energy, and the heat exchanger can help human beings to improve the utilization efficiency of energy and realize carbon peak reaching and carbon neutralization early.

Drawings

Fig. 1 is a schematic perspective view of an accordion according to the present invention;

fig. 2 is a schematic perspective view of an accordion open heat exchanger according to the present invention;

FIG. 3 is a schematic side view of an accordion open heat exchanger of the present invention;

fig. 4 is a schematic side view of an accordion heat exchanger of the present invention;

FIG. 5 is a schematic side view of an accordion open heat exchanger of the present invention;

FIG. 6 is a schematic side view of an accordion semi-open heat exchanger of the present invention;

FIG. 7 is a schematic side view of an inventive accordion heat exchanger;

FIG. 8 is a schematic axial cross-sectional view of a gas cooker having a cylindrical accordion open heat exchange structure according to the present invention;

FIG. 9 is an axial cross-sectional schematic view of an exhaust particulate trap formed by a cylindrical accordion open heat exchange structure of the present invention;

FIG. 10 is a schematic cross-sectional view of an exhaust particulate trap formed of a cylindrical accordion open heat exchange structure of the present invention;

FIG. 11 is a schematic axial cross-sectional view of an exhaust gas purifying device of an oxidation catalyst (DOC) and a particulate filter (DPF) formed by a cylindrical accordion heat exchange structure of the present invention;

FIG. 12 is a schematic axial cross-sectional view of an exhaust gas purification device of the present invention having a cylindrical accordion heat exchange structure forming an oxidation catalyst (DOC) and a particulate filter (DPF) and coupled to a selective catalytic reduction device (SCR);

fig. 13 is a schematic system structure diagram of an air source heat pump water heater (air-conditioning water heater) composed of a cylindrical accordion heat exchange structure of the invention;

fig. 14 is a schematic axial cross-sectional view of a waste heat pump device of the present invention, which is formed by open-type heat exchange of a cylindrical accordion.

Detailed Description

The first embodiment is as follows:

in the first embodiment, an accordion open type heat exchanger is provided, which is an accordion open type heat exchanger in multiple inlet and outlet modes mainly formed by an accordion I1, as shown in fig. 1 to 3, and the accordion open type heat exchanger is composed of an accordion I1, a seal 5, a seal plate II1, a first inlet collection tank 6 with a total inlet, and a first outlet collection tank 7 with a total outlet.

A: the accordion I1 is a heat exchange structure, a plurality of heat exchange surface units 2 with the same area and the same interval are arranged on a metal thin plate 1 according to the same length, and are repeatedly folded after being punched into various shapes, and all the folded heat exchange surface units 2 are ensured to be connected and stacked together, a first flow channel 3 which is separated by a thin plate 1 and conducts heat with a heat exchange surface unit 2 and is formed by one side wall surface of the thin plate 1 and a second flow channel 4 which is formed by the other side wall surface of the thin plate 1, the heat exchange surface units 2 of the heat exchange flow channels are parallel to each other to form a square heat exchange structure of which the cross sections of the flow channels on two sides are long and narrow rectangles, the heat exchange surface units 2 are not parallel to each other to form a sector ring body or a cylinder heat exchange structure of which at least one side of the cross section of the flow channels on two sides is long and narrow sector ring, and at least one side of the widths of the flow channels on two sides of the sector ring body and the cylinder heat exchange structure is not wide; the distance between two heat exchange surface units 2 of a first flow channel 3 is the width of the first flow channel 3, the bending position of the two heat exchange surface units 2 of a second flow channel 4 is the tooth crest of the first flow channel 3, the distance between the two heat exchange surface units 2 of the second flow channel 4 is the width of the second flow channel 4, the bending position of the two heat exchange surface units is the tooth crest of the second flow channel 4, the vertical distance between the tooth crest of the adjacent first flow channel 3 and the tooth crest of the second flow channel 4 is the height of the flow channel, and the width of the thin plate 1 is the length of the flow channel; a plurality of first flow channels 3 and second flow channels 4 in the shape of accordion long narrow are connected and stacked together at intervals to form a compact heat exchange structure of the accordion I1.

B: the heat exchange surface units 2 are heat exchange wall surfaces forming heat exchange flow channels of the accordion I1, one surface of one heat exchange surface unit 2 is positioned in the flow channel at one side, and the other surface of the heat exchange surface unit 2 is positioned in the flow channel at the other side, one of the characteristics of the heat exchange surface unit 2 is that mass transfer (heat transfer working medium) is isolated and heat transfer is simultaneously performed, the second characteristic is that each heat exchange surface unit 2 is folded by punching and connected and piled together, so that no leakage problem exists in the flow channel formed by the folding, the third characteristic is that the wall surface shape of each heat exchange surface unit 2 formed at one side of the thin plate 1 is in the flow channel at one side after the folding and the folding are folded and piled, the flow channel at one side with the height is wider than the flow channel at the other side with the height, namely, the heat exchange structures with different widths of the runners at the two sides are formed; therefore, the wall surface of the heat exchange surface unit 2 may be flat, and the wall surface may also be punched into various corrugations (continuous corrugated wall surface, discontinuous corrugated wall surface, etc.) or various boss shapes, etc., and the heat exchange surface unit 2 may also be in a curved parabolic shape, and the first flow passage 3 and the second flow passage 4 formed by the curved parabolic heat exchange surface unit 2 after being punched and folded are in a cylindrical heat exchange structure with equal width flow passages.

The heat exchange surface units 2 are a plurality of mutually connected heat exchange surfaces which are arranged on the metal sheet 1 according to the same length and have the same area and the same interval, the wall surfaces of the heat exchange surface units 2 can be corrugated surfaces which have flat surfaces and can also be various shapes with the same up-down fluctuation height or different up-down fluctuation heights, and can also be bent parabolic, the wall surface shapes of the heat exchange surface units 2 formed on one side are connected and stacked through stamping and folding and then are all in a flow passage on one side, the wall surface shapes of the heat exchange surface units 2 on the other side are in a flow passage on the other side, and the continuous oblique corrugations of the heat exchange surface units 2 form crossed corrugations after being folded.

C: the heat exchange flow channel of the accordion I1 is characterized in that a plurality of long and narrow side heat exchange flow channels 3 and second flow channels 4 are formed by stamping and folding a thin plate 1, the long and narrow side heat exchange flow channels are separated by the thin plate 1 and are heat-conducted by a heat exchange surface unit 2, the first flow channels and the second flow channels are connected and stacked together at intervals to form two side heat exchange flow channels of the compact accordion I1, the width of the two side heat exchange flow channels can be equal or unequal, various flow channel structures (a flat flow channel, various turbulent flow channels, pressure-bearing flow channels such as cross corrugations and bosses, various flow channels of a parabolic shape and the like) are formed by various wall surfaces of the heat exchange surface unit 2, and the first flow channel 3 and the second flow channel 4 can form a cylindrical heat exchange structure of the same-width flow channels after being folded.

D: the seal 5 is a high-strength temperature-resistant adhesive or a metal narrow band and is used for sealing the end part of a flow channel of the accordion I1, when the end part of the flow channel is sealed by a metal band, the seal is welded on two sides of the thin plate 1 and is repeatedly folded together with the thin plate 1 to seal the end part of each flow channel, namely, 2 times of the thickness of the seal is equal to the width of the flow channel, the thickness of the seal just enables the width of the folded and sealed flow channel to be equal, and the flow channel sealed by the seal is an equal-width flow channel and the flow channel opening is arranged on the side face of the end.

The accordion flow channel blocked by the seal 5 has three modes, the first mode is that the two ends of the first flow channel 3 and the second flow channel 4 of the accordion are completely blocked, namely four seals 5 are respectively welded on the upper part and the lower part of the two sides of the thin plate 1, and the four seals 5 and the thin plate 1 are folded simultaneously to completely seal four ports at the two ends; the second is that two ends of the flow passage at one side of the accordion are sealed, namely two ends of the first flow passage 3 or two ends of the second flow passage 4 are all sealed; the third is alternate plugging, i.e. one end of the first flow channel 3 and the other end of the second flow channel 4. The specific plugging mode is determined by the arrangement condition of an inlet and an outlet of a flow passage of the accordion I1 and is realized by combining the sealing plate II 1.

E: shrouding II1 and runner import and export: the sealing plate II1 is a metal plate used for sealing the flow channel on any side of the accordion I1, namely the sealing plate II1 is in contact welding with the tooth crest of any side flow channel, so that the sealed side flow channels become independent and closed long and narrow flow channels, and the inlet and the outlet of the flow channel are arranged at the end part of the flow channel and the two ends of the other side flow channel are sealed (so as to ensure the independence of the inlet and the outlet at the end part); if the end part of the flow channel is directly blocked, the inlet and the outlet of the flow channel are arranged on the end side surface of the flow channel and are arranged at the two ends of the side sealing plate; when the end parts of the flow channels are plugged alternately, the inlet and outlet ends of the flow channels formed after plugging of the sealing plate II1 are arranged at the end parts of the other ends of the side surfaces, and the alternate inlet and outlet are formed.

The seal 5 and the seal plate II1 are used for respectively sealing any side flow channel and corresponding end of the accordion (I1) to form an inlet and an outlet of three flow channels, and an inlet and an outlet collection box are arranged on the inlet and the outlet collection box, any side flow channel of the accordion (I1) is sealed by the seal plate (II1) to form an inlet and an outlet of flow channels at two ends, and the seal (5) is used for sealing two ends of the flow channel at any side, the seal (5) is used for sealing two end portions of the flow channel at any side to form an inlet and an outlet of flow channels at end sides at two ends of the seal plate (II1), and the seal (5) is used for alternately sealing two ends of the flow channel to form an inlet and an outlet of flow channel, one end of which is located between the seal plate (II1) and the seal (5) at the side, and the other end of which is located at the end portion;

in addition, the shape of the closing plate II1 should be adapted to the overall shape of the accordion flow channel I1, and it may be planar, sector ring shaped or circular plate, concave, L-shaped, etc., so as to form various shapes such as a square accordion open type heat exchanger, a sector ring shaped accordion open type heat exchanger, or a cylindrical accordion open type heat exchanger, etc., and the heat exchange planes of the sector ring shaped and cylindrical accordion flow channel are located on the axial section, so that the cross section of at least one side of the accordion flow channel of the accordion I1 is a micro sector ring with unequal width, the end of the micro sector ring shaped flow channel is also unequal width and is not suitable for sealing by using a seal, and the rectangular flow channel on the other side can be sealed by using a seal.

F: the first inlet and outlet collection box of the accordion runner:

the collecting box is a box body which is arranged on an inlet and an outlet of a flow passage of the accordion and used for collecting and distributing heat transfer working media, the joint of the collecting box and the inlet and the outlet of the flow passage needs to be similar, and because the inlet and the outlet of a first flow passage of the accordion have three arrangement modes, a first inlet collecting box 6 with a main inlet and a first outlet collecting box 7 with a main outlet can be respectively arranged at two ends of the first flow passage 3 of the accordion I1 and used for plugging two ends of a second flow passage, can also be respectively arranged at two sides of the two ends of the first flow passage 3 and used for plugging the end part, and can also be arranged at the end part of the first flow passage 3 and the other end part thereof.

In summary, the thin plate 1 is punched and repeatedly folded according to each heat exchange surface unit 2, and each folded heat exchange surface unit 2 is connected and stacked together to form a plurality of long and narrow first flow passages 3 and second flow passages 4 which are separated by the thin plate 1 and conduct heat with the heat exchange surface units 2 and are shaped like an accordion, a plurality of first flow passages 3 and second flow passages 4 which are connected and stacked together form a heat exchange main structure of the accordion I1, the first flow passages and corresponding end parts of the accordion I1 are respectively sealed by sealing plates II1 and sealing strips 5 to form three types of inlets and outlets of the side flow passages, and a first inlet collection box 6 with a main inlet and a first outlet collection box 7 with a main outlet are further arranged on the inlets and the outlets, so that a first inlet collection box 6 with a main inlet, a first flow passage of the accordion I1 and a first outlet collection box 7 with a main outlet are sequentially formed, an accordion open type heat exchanger for exchanging heat between the second open passages (the flow passage is not closed); a partition plate can be arranged in the collection box to enable the first flow channel 3 of the accordion I1 to form a reciprocating uniform-section flow channel or variable-section flow channel, the gradually-expanding type variable-section flow channel is an evaporative heat exchanger, and the gradually-contracting type variable-section flow channel is a condensing heat exchanger.

The characteristics of the heat exchange performance of the accordion open type heat exchange structure are as follows: firstly, the heat exchange wall surface is very thin, so that the heat transfer rate is high, and the mechanical strength of the channel is enhanced through cross corrugation or boss contact and the like; secondly, the hydraulic diameter of the channel is very small, so that the unit heat exchange area is large, the structure is very compact, and the heat transfer strength is high; thirdly, the cold and hot runners can be of equal width or unequal width, and the heat exchange wall surfaces of the runners can be stamped into various shapes so as to adapt to the heat transfer of different working media; fourthly, the inlet and the outlet of the flow passage are arranged by themselves and can be arranged at the end part or the side surface of the end, and a very complicated inlet and outlet flow guide device is not needed to be arranged additionally, so that the whole flow resistance of the heat exchanger is small, and the reliability is high; fifthly, the heat transfer surface is a primary surface, so that heat can be transferred with one hundred percent efficiency, and the problem of ribbing efficiency smaller than 1 on a secondary surface is solved, so that materials are saved, and the light weight of the heat exchanger is realized; sixthly, the cold and hot flow direction is concurrent or countercurrent heat exchange, which is superior to the problem of imbalance of the whole heat exchange of the device caused by cross flow or cross flow heat exchange.

The manufacturing characteristics of the accordion open type heat exchange structure are as follows: firstly, no metal cutting process is adopted in the manufacturing process, and no waste and leftover materials are generated; secondly, the whole processes of stamping, folding and welding can realize mechanical continuous production, thereby meeting the requirements of a large number of markets; and thirdly, the device has low manufacturing cost, wide application and strong market competitiveness and can also derive and integrate other functions.

The accordion open type heat exchanger can be used for liquid cooling and heat dissipation, such as cooling and heat dissipation of an internal combustion engine, cooling and heat dissipation of engine oil, cooling and heat dissipation of a fuel cell stack, heating of air conditioner hot air by cooling water, new energy power wheel side motor, electric control heat dissipation and the like; the cooling and heat dissipation of gas, such as exhaust gas recirculation cooling of an internal combustion engine, cooling and heat dissipation of charge air and the like; the accordion open type heat exchanger and the accordion open type heat exchanger of the electric heating source are used for indoor heating in winter, preheating starting of a cold machine of an internal combustion engine and the like, can utilize exhaust waste heat sources to heat and raise temperature of engine oil in a bottom shell of the internal combustion engine in a severe cold area and heat and raise temperature of liquid in other containers such as a water tank or an oil tank and the like, and can also implant a pct ceramic body into each flow channel and connect in parallel in a header to form a variable-power constant-temperature invasive pct liquid heater; the accordion open type heat exchanger is implanted into a ceramic honeycomb carrier and is provided with a tail gas inlet and a tail gas outlet in the direction of a flow channel for packaging to form an internal combustion engine oxidation purifier or a microparticle trap with cooling or heating, the temperature of the oxidation purifier is increased by heating the accordion open type heat exchanger before the cold machine is started so as to shorten the ignition temperature time of a catalyst and solve the problem of high emission in the cold start period, the purifier and the trap are cooled by the accordion open type heat exchanger during regeneration to prevent high-temperature melting and thermal stress cracking, and the teeth peaks of two groups of accordion open type heat exchangers can be welded and then implanted into solids such as the ceramic honeycomb carrier and the like or the channels of the two groups of accordion open type heat exchangers are mutually inserted and then implanted into various heating and cooling structures such as the ceramic honeycomb carrier and the like. In addition, a plurality of partition plates can be arranged in the collection box to form a back-and-forth turning flow passage with equal cross section and a back-and-forth turning flow passage with unequal cross section, a divergent flow passage of the flow passage with unequal cross section is used for an evaporative heat exchanger such as an air conditioner, a convergent flow passage is used for a condensing heat exchanger such as an air conditioner, and the heat exchangers with the flow passages with variable cross section are particularly suitable for condensing radiators and the like in highways, railways and high-speed moving environments. Furthermore, if the first flow channel at one end of the accordion is directly contacted with the second flow channel for heat transfer, the accordion open type heat exchanger is an accordion pre-heat transfer type mixed heat exchanger, such as steam heating water and the like; it can also be used in chemical industry and pharmacy.

Example two: in the second embodiment, an accordion type heat exchanger is provided, in which flow channels on both sides of the accordion type heat exchanger are sealed, and as shown in fig. 4, on the basis of the first embodiment, the closing plate II2 and the seal 5 are used to respectively seal the flow channel on the other side and the corresponding end of the accordion type heat exchanger I1 to form an inlet and an outlet of the flow channel on the side, and a second inlet collection tank 8 with a total inlet and a second outlet collection tank 9 with a total outlet are further disposed on the side, so that a second inlet collection tank 8 with a total inlet, a second flow channel 4 of the accordion type heat exchanger I1, and a second passage of the accordion type heat exchanger I1 with the second outlet collection tank 9 with a total outlet are sequentially formed, and heat exchange is performed on the first passage.

The flow passages on both sides of the dividing wall type accordion heat exchanger are not suitable to be arranged at the end part at the same time, otherwise, the end needs a very complicated inlet and outlet flow guide structure, and one end of the hybrid accordion heat exchanger is provided with two flow passages at the same time so as to be convenient for mixing; implanting the pct ceramic body into each flow channel on one side and connecting the flow channels in the header in parallel, so that the flow channel on the other side forms a variable-power constant-temperature heater such as a pct 'hydrothermal heater'; when the first flow channel inlet and outlet collection box is arranged on the side surface, the second flow channel is internally provided with a wall-flow type particle collection structure, and the inlet and outlet collection box is arranged at the end part, an oil injection and air supplement facility is arranged on the inlet collection box of the second flow channel, and the accordion heat exchanger becomes a regeneration cooling type internal combustion engine particle collector (DPF); in addition, a plurality of partition plates can be arranged in the collecting box of the flow channel on one side to form a back-and-forth turning flow channel with equal section and a back-and-forth turning flow channel with unequal section, a gradually expanding flow channel of the flow channel with unequal section is used for evaporative heat exchangers such as air conditioners and a gradually contracting flow channel is used for condensing heat exchangers such as air conditioners, and the gradually contracting condenser is particularly suitable for cooling ships and the like by using water or seawater; the evaporative heat exchanger with the gradually-expanding flow channel can also enable the flow channel on the other side to enter wet air in a windward mode on the mobile equipment and cool and condense the wet air to produce water.

The heat exchange flow channels on the two sides of the accordion type heat exchanger are closed, so that the circulating working medium of the flow channel of the accordion type heat exchanger in actual use needs to be driven by circulating power, and if the accordion type heat exchanger is used in a mobile environment and can perform heat dissipation and cooling by means of a windward side, the sealing plates on the heat dissipation side of the accordion type heat exchanger and the collecting boxes at the two ends of the sealing plates can be changed into shutters, so that a natural windward heat dissipation mode when the shutters are opened or a forced circulation heat exchange mode when the shutters are closed is formed. The accordion type heat exchanger has the technical characteristics and the manufacturing characteristics like an accordion open type heat exchanger, the shape of the heat exchanger can form fan-ring-shaped accordion heat exchangers or cylindrical accordion heat exchangers and other various shapes, and an inlet and an outlet collection box at one side can be arranged at the end part and can also be arranged at the side surface of the end; two heat exchange flow channels of the cylindrical accordion heat exchanger can form a parabolic equal-width flow channel (a sector ring caused by unequal inner and outer radiuses is eliminated), and the heat exchange wall surface adopts a cross ripple or boss structure and other shape structures to strengthen heat exchange and improve mechanical strength.

Example three:

in a third embodiment, as shown in fig. 5, on the basis of the first embodiment, the closing plate II1 and the seal 5 are used to symmetrically and respectively seal the end portions of the first flow channel 3 and the second flow channel 4 of the accordion I2, so that the inlet and the outlet of the first flow channel 3 of the accordion I2 and the inlet and the outlet of the second flow channel 4 of the accordion I1 are respectively merged into an inlet header 10 with a total inlet and an outlet header 11 with a total outlet at two ends, thereby sequentially forming heat exchange passages for heat exchange with the open first flow channel 3 of the accordion I1 and the open second flow channel 4 of the accordion I2, wherein the inlet header 10, the second flow channel 4 of the accordion I1 and the first flow channel 3 of the accordion I2 are connected in parallel, and the outlet header 11 is connected in parallel.

The application of the open-type accordion heat exchanger of the third embodiment is the same as that of the first embodiment, except that the first embodiment is a two-sided heat exchange, and the shape of the first embodiment can be formed into various shapes such as a fan-ring-shaped accordion open-type heat exchanger or a cylindrical accordion open-type heat exchanger.

Example four:

in a fourth embodiment, a semi-open type double-layer accordion heat exchanger is provided, as shown in fig. 6, based on the third embodiment, a sealing plate II2 is further used to seal the first flow channel of the accordion I1, and a first inlet collection tank 6 and a first outlet collection tank 7 of the accordion I1 are respectively arranged at two end sides of the first flow channel of the accordion I1 on two sides of the sealing plate II2, so that a heat exchange passage is sequentially formed among the first inlet collection tank 6 with a total inlet of the accordion I1, the first flow channel 3 of the accordion I1, the first outlet collection tank 7 with a total outlet, and the second flow channel 4 of the accordion I1.

The semi-open type double-layer accordion heat exchanger of the fourth embodiment is applied to occasions of forced heat exchange at one side and natural heat exchange at the other side, for example, when the semi-open type double-layer accordion heat exchanger is applied to heat dissipation of a moving automobile water tank or a galvanic pile, a flow control door of two flow channels can be arranged on a cooling liquid inlet box, and one side of the natural heat exchange is arranged on the windward side, so that the semi-open type double-layer accordion heat exchanger is more suitable for load changes and environmental changes such as moving working conditions and the like all the year round.

Example five:

in the fifth embodiment, as shown in fig. 7, based on the fourth embodiment, a closing plate II 3 is further used to close the second flow channel 4 of the accordion I2, and a second inlet collection tank 8 with a total inlet and an outlet collection tank 9 with a total outlet of the accordion I2 are respectively arranged on both end sides of the second flow channel of the accordion I2 at both sides of the closing plate II 3, so as to form heat exchange passages of the second inlet collection tank 8 with a total inlet of the accordion I2, the second flow channel 4 of the accordion I2, and the second outlet collection tank 9 with a total outlet of the accordion I2, and exchange heat with the first flow channel 3 of the accordion flow channel I2.

The accordion heat exchangers symmetrically arranged at two sides of the closing plate II1 exchange heat in the accordion flow channels respectively after the second flow channels 4 of the accordion flow channels I1 and the first flow channels 3 of the accordion flow channels I2 are connected in parallel through an inlet collection box 10 and an outlet collection box 11. If carrier materials such as silicon carbide and the like are arranged in the second flow passage of the accordion flow passage I1 and the first flow passage of the accordion flow passage I2 which are connected in parallel, and a wall-flow type particle filtering and trapping structure is formed, and meanwhile, an oil injection and gas supplement facility is arranged on the inlet collection box 10, the accordion double-layer heat exchanger forms an oil injection combustion-supporting regeneration cooling type tail gas particle trap-particle filter (DPF) of the diesel engine.

Example six:

in a sixth embodiment, as shown in fig. 8, in the first embodiment, the accordion I1 is a cylindrical vertical structure, the circular closing plate II1 is used to close the first flow channel 3 outside and the seal 5 is used to close (alternatively close) the upper end of the first flow channel 3 and the lower end of the second flow channel 4 of the accordion I1, so that the annular first outlet collection box 7 is disposed between the upper edge of the circular closing plate II1 and the seal 5, the annular first inlet collection box 10 is a jacket kettle and is disposed at the lower end of the cylindrical accordion I1, the annular jacket at the upper portion of the jacket kettle is adapted to the lower end of the cylindrical accordion I1 and is fixedly sealed so that the inner jacket kettle of the jacket kettle is a bottom 14, the center of the outer jacket kettle of the jacket kettle is a total inlet and is provided with a gas stove 15, thereby sequentially forming a gas stove 15 at the total inlet of the center of the outer jacket kettle, a gas stove 15 at the center of the outer jacket kettle, and a gas stove 15 at the center of the second flow channel 4, A heat exchange structure among the jacket kettle, the first flow channel 3 of the accordion I1, a heat exchange passage of a first outlet collection box 7 with a main outlet and the second flow channel 4 of the cylindrical accordion I1.

The working process of the gas cooker of the sixth embodiment is that the gas cooker arranged at the main inlet burns fuel, high-temperature flue gas heats water in the cooker bottom through convection and radiation, then enters the first flow channel of the accordion to continuously exchange heat with the second flow channel of the accordion and heat the water in the cooker, discharged fuel gas flows out of the main outlet through the outlet collection box of the first flow channel, and heat released by fuel combustion is transferred to the water in the cooker. The jacket kettle type inlet collection box plays a role in combusting fuel in a hearth and heating water in the steamer by heat through the bottom of the steamer, and the jacket kettle type inlet collection box is different from the existing gas steamer in that a round accordion open type heat exchange technical structure is added at the middle lower part of the original cylindrical steamer, so that the heat of flue gas is further transferred to the water, the smoke exhaust temperature of the gas steamer is lower, and the utilization efficiency of combustion heat is higher.

Example seven:

in the seventh embodiment, as shown in fig. 9 to 10, in the diesel particulate trap (DPF) composed of the cylindrical accordion I1, the accordion I1 is cylindrical, the closing plate II1 is disposed at the outer side thereof, the closing plate 112 is a perforated tube, and the perforated fins 17 with wide and narrow intervals are disposed in the perforated tube and are disposed in the tube of the cylindrical accordion I1 to be welded to the crests of the first flow channel 3, the perforated tube II2 with the perforated fins 17 and the second flow channel 4 of the accordion flow channel I1 are both provided with ceramic carrier materials such as silicon carbide to form a wall-flow particulate trap structure 16 with a cross section similar to "sunflower", the inlet collection tank 12 with a main inlet of the second flow channel 4 and the outlet collection tank 13 with a main outlet of the second flow channel 4 are respectively disposed at both ends of the "sunflower" particulate trap structure 16, and thereby sequentially forming the inlet collection tank 12 with a main inlet of the second flow channel 4, the outlet collection tank 12 with a main inlet, the outlet collection tank 13 with a main outlet of the second flow channel 4, and the inlet collection tank 12, A sunflower type particle collecting structure 16 and a cylindrical accordion exhaust particle filtering passage of an outlet collection box 13 of the second flow passage 4 with a main outlet; the heat exchange wall surface of the first flow channel 3 (outer side) of the accordion I1 is a cross corrugated or boss type equal-width flow channel, and the cross section of the second flow channel 4 (inner side) of the accordion flow channel I1 is a fan-shaped annular flow channel with the outer width and the inner width.

The seventh embodiment provides a diesel engine fuel injection combustion-supporting regeneration cooling type exhaust particle trap (DPF) formed by embedding a cylindrical accordion open type heat exchanger into a ceramic carrier, the particle purification efficiency of the diesel engine fuel injection combustion-supporting regeneration cooling type exhaust particle trap (DPF) is the best mode of internationally recognized particle emission control, and an independent DPF device is a device which is required to be assembled on a non-road 37-75 kilowatt diesel engine executed by national emission at the end of 2022. The regeneration temperature control of the DPF device is a world-level problem (the carbon particles trapped by the device after long-term operation must be removed by burning when reaching a set value, because the normal tail gas temperature of a diesel engine is lower than 500 ℃ and cannot reach the start-up temperature of the carbon particles more than 600 ℃, and when the carbon particles are burnt by simple and practical oil injection and air supplement, the burning temperature is difficult to control below 1000 ℃ and exceeds 1200 ℃, even reaches about 2000 ℃), which causes the burning and melting of the ceramic carrier and the thermal stress rupture. In the DPF device provided by the embodiment, air (of an air storage cylinder) is introduced into the first flow channel of the accordion (through the collecting boxes 6 and 7) during regeneration, so that the device is cooled and reaches a safe temperature range; the perforated ribs 17 and the perforated pipe II2 have the second function of conducting the heat of the central shaft part to the first flow channel of the accordion I1 through the tooth peaks of the first flow channel 3 and taking out the heat by cooling air, and the second function of increasing the overall mechanical strength by connecting ceramic carrier materials through gaps.

The wall-flow particulate trap structure of the exhaust particulate trap (DPF) provided in example seven has resistive silencing properties, and the inlet collection tank with the main inlet and the outlet collection tank with the main outlet have resistive silencing properties.

Example eight:

in the eighth embodiment, as shown in fig. 11, in the second embodiment, the first accordion type heat exchanger 48 and the second accordion type heat exchanger 49 are both cylindrical, and an inlet collection tank 6 with a total inlet and an outlet collection tank 7 with a total outlet of the first flow passage 3 are respectively provided at both outer ends of the two cylinders, and an inlet collection tank and an outlet collection tank of the second flow passage 4 are respectively provided at an end portion, the second flow passage 4 of the first accordion type heat exchanger 48 is provided with a wall-flow type particulate filtering and trapping structure, the second flow passage 4 of the second accordion type heat exchanger 49 is provided with an oxidation catalyst honeycomb structure, circular closing plates II2 and II4 are respectively provided with a partition plate 18, and are communicated by a perforated pipe 19, so that inlet collection tanks and outlet collection tanks at adjacent ends of the cylindrical first accordion type heat exchanger 48 and the second accordion type heat exchanger 49 are communicated and have a silencing performance An annular space 20 is formed, a central space 21 formed between the two partition plates 18 is communicated with the annular space 20 through a perforated pipe 19, and an inlet collection tank 12 with a main inlet and an outlet collection tank 13 with a main outlet of the purifier are respectively arranged at two ends of a cylindrical second accordion heat exchanger 49 and a cylindrical first accordion heat exchanger 48 which are axially connected in series by the annular space 20, so that an inlet collection tank 12 with a main inlet of the purifier, a second flow channel 4(DOC) of the second accordion heat exchanger 49, the annular space 20 and a tail gas silencing and purifying passage communicated with the central space 21, the second flow channel 4(DPF) of the first accordion heat exchanger 48 and the outlet collection tank 13 with a main outlet of the purifier are sequentially formed.

The heat exchange wall surfaces of first flow channels (outer sides) of the first accordion heat exchanger and the second accordion heat exchanger are cross corrugated or boss type equal-width flow channels, a second flow channel (inner side) of the first accordion heat exchanger is a fan-shaped micro flow channel with the outer width and the inner width, is provided with carrier materials such as silicon carbide and the like and forms a wall-flow type particulate filtering and trapping structure (DPF), and a second flow channel (inner side) of the second accordion heat exchanger is a fan-shaped micro flow channel with the outer width and the inner width and is provided with a ceramic carrier coated with a catalyst to form an oxidation catalysis function (DOC); the inlet collection tank and the outlet collection tank of the purifier, the annular space and the central space have resistance silencing performance, the silencing performance can be expanded on the basis, and the second flow channel of the first accordion heat exchanger and the second flow channel of the second accordion heat exchanger have resistance silencing performance.

An oxidation catalyst (DOC) is a diesel engine exhaust purification device which is made of ceramic and other materials as a carrier and loads active components such as rare earth, noble metal or metal oxide, the unburned fuel such as hydrocarbon, carbon monoxide and the like of soluble organic components (SOF) in the exhaust gas is mainly eliminated through oxidation reaction and the heat is released, because the purification working temperature determines the purification effect, an accordion heat exchanger is implanted into the DOC to adjust the working temperature and operate in the optimal temperature range, particularly, the carrier is heated through the accordion heat exchanger and the catalytic combustion time is shortened during cold start, the oxidation catalyst (DOC) implanted into the accordion heat exchanger is tightly coupled at the front end of the DPF implanted into the accordion heat exchanger to improve the exhaust temperature so that the DPF device combusts microparticles under the normal working condition, and the temperature can be improved through oil injection and gas supplement (not shown in the figure) arranged on an inlet collection box during regeneration, The invention can be used for 75-130 kilowatt off-road diesel engines and satisfactory internal combustion engines which are executed in the end of 2022 in China, and can eliminate carbon particles, hydrocarbon and the like and prevent high-temperature accidents by using an implanted accordion heat exchanger.

Example nine:

in the ninth embodiment, an oxidation catalyst (DOC) and a particulate filter (DPF) formed by two cylindrical accordion heat exchangers are closely coupled with a selective catalytic reduction device (SCR) and have a silencing performance, as shown in fig. 12, on the basis of the second embodiment, a first accordion heat exchanger 48 and a second accordion heat exchanger 49 are both cylindrical, an inlet collection tank 6 with a total inlet and an outlet collection tank 7 with a total outlet of a first flow channel 3 are respectively arranged at the outer sides of both ends of the two cylinders, an inlet collection tank and an outlet collection tank of a second flow channel 4 are respectively arranged at the end parts, a wall-flow type particulate filtering and trapping structure is arranged in the second flow channel 4 of the first accordion heat exchanger 48, an oxidation catalytic honeycomb structure is arranged in the second flow channel 4 of the second accordion heat exchanger 49, both ends of a circular closing plate II4 of the second accordion heat exchanger 49 are axially extended, and one end of the circular closing plate II2 of the first accordion heat exchanger 48 is communicated with one end to form a mixer 22 and the mixer II2 The inlet and outlet collection boxes at the adjacent ends of two cylindrical accordion heat exchangers 49 and 48 are closed to form an annular space 20, two ends of the two cylindrical accordion heat exchangers 49 and 48 which are axially connected in series by the annular space 20 are respectively provided with an inlet collection box 12 with a main inlet and an outlet collection box 13 with a main outlet of a purifier, the main outlet of the outlet collection box 13 of the purifier is communicated with the inlet of a mixer 22, the outlet collection box 13 at the inlet end close to the mixer 22 is provided with a urea nozzle 23, the other end of a circular closing plate II4 passes through the inlet collection box 12 with the main inlet of the purifier and is sequentially communicated with a reducing bed inlet chamber 24, a reducing bed 25 and a reducing bed outlet chamber 26 of a selective catalytic reduction device (SCR), so that the inlet collection box 12 with the main inlet, a second flow channel 4 of the second accordion heat exchanger 49, the annular space 20, a second flow channel 4 of the first accordion heat exchanger 48, a first flow channel 4, The diesel engine tail gas silencing and purifying passage comprises an outlet collecting box 13 with a main outlet, a mixer 22, a reducing bed inlet chamber 24, a reducing bed 25 and a reducing bed outlet chamber 26.

The tail gas enters from an inlet collection box, tightly couples with a DPF through a DOC (diesel engine) and a DPF (diesel particulate filter) and reversely passes through the inlet collection box through a central mixing pipe of the DOC and the DPF and is connected with the SCR in series to form a three-in-one tail gas purification passage, the heat exchange wall surfaces of the first flow channels (the outer sides) of two accordion heat exchangers implanted in the DOC and the DPF are cross corrugated or boss type equal-width flow channels, the second flow channels (the inner sides) are fan-ring flow channels with wide outer sides and narrow inner sides, and are respectively provided with a DOC formed by a ceramic carrier and the like coated with a catalyst and a wall-flow DPF formed by carrier materials such as silicon carbide and the like; the urea nozzle arranged on the outlet collection box can form countercurrent injection, the relative speed of the urea nozzle and the outlet collection box is high, the preliminary mixing and heat absorption effect is good, the mixer can also be provided with a mixing sheet to ensure that reducing agents such as atomized urea and the like are further mixed and contacted better with nitrogen oxide of tail gas, and simultaneously the reducing agents are heated by the DOC and the inlet collection box so that urea is fully hydrolyzed and pyrolyzed into ammonia to catalytically purify the nitrogen oxide on a reduction bed, and urea crystal deposits can be decomposed and eliminated at high temperature when the device is regenerated; the inlet collection box of the purifier, the annular space, the outlet collection box of the purifier, the inlet chamber of the reduction bed, the outlet chamber of the reduction bed and the mixer all have resistance silencing performance, and the second flow channels (the trap and the oxidation bed) of the two accordion heat exchangers and the reduction bed all have resistance silencing performance.

The Selective Catalytic Reduction (SCR) method has a high efficiency, is the best technology for treating NOx and can be widely applied, and its principle is that a catalyst is used, and at a certain temperature, ammonia is used as a reducing agent for catalytic reaction, and nitrogen oxides are converted into harmless nitrogen and water; the device has compact structure and reasonable layout, particularly, the selective catalytic reduction device is adjacent to the inlet collection box, and the inlet pipe of the selective catalytic reduction device penetrates through the inlet collection box, so that the working temperature of the mixer and the catalytic bed is ensured, the urea is fully hydrolyzed and pyrolyzed in the mixer and is uniformly mixed with tail gas, low-temperature crystallization and calculus are prevented, and the device can be used in 130-560 kilowatt off-road diesel engines and satisfactory internal combustion engines which are arranged at the end of 2022 year in China.

Example ten:

example ten provides an air source heat pump water heater (air conditioner water heater) composed of a cylindrical accordion heat exchanger, as shown in fig. 13, based on the second example, the accordion heat exchanger is cylindrical and has a first inlet collection tank 10 with a total inlet and a first outlet collection tank 11 with a total outlet, both ends of which are respectively provided with a first flow passage 3, an annular second inlet collection tank 8 with a total inlet and an annular second outlet collection tank 9 with a total outlet, which are arranged inside both ends of the cylindrical accordion heat exchanger, further, a louver 27 and a louver 28 are respectively arranged at the total inlet and outlet outside both ends of the first inlet collection tank 10 with a total inlet and the first outlet collection tank 11 with a total outlet, a filter 18 is respectively arranged at the inner edge of the outer side of the annular second inlet collection tank 8 with a total inlet and the annular second outlet collection tank 9 with a total outlet, the cylinder space of the cylindrical accordion type heat exchanger is sealed into an independent circular central cavity 29 by two partition plates 18, a compressor 31 is arranged in the circular central cavity 29 close to the first outlet collection box 11, an axial flow fan 30 is arranged on the partition plate 18 close to the first inlet collection box 10, an impeller and a motor of the axial flow fan are respectively positioned in the first inlet collection box 10 and the circular central cavity 29, a throttle valve 34 is arranged between the fan motor and the compressor 31 in the circular central cavity 29, a water tank 32 internally provided with an accordion open type condenser 33 is also arranged outside the accordion type heat exchanger, a total inlet of a first inlet collection box 6 of the accordion open type condenser 33 is communicated with an outlet of the compressor 31 through a pipeline, an inlet of the compressor 31 is communicated with a total outlet of an annular second outlet collection box 9, a total inlet of an annular second inlet collection box 8 is communicated with an outlet of the throttle valve 34, The inlet of the throttle valve 34 is communicated with the total outlet of the outlet collection box 7 of the accordion open condenser 33 through a pipeline, so that a closed circulation path of organic working medium of the compressor 31, the accordion open condenser 33 and the inlet and outlet collection boxes 6 and 7 thereof, the throttle valve 34, the second flow channel 4 of the cylindrical accordion heat exchanger and the annular second inlet and outlet collection boxes 8 and 9 thereof and the air filtering and heat releasing cooling channel of the compressor 31 are formed in sequence, and heat exchange is carried out with the air filtering and heat releasing cooling channel of the filtering shutter 27, the first inlet collection box 10 and the impeller of the axial flow fan 30, the first flow channel 3 of the cylindrical accordion heat exchanger, the first outlet collection box 11 and the shutter 28.

In the air source heat pump water heater (air conditioner water heater) provided by the tenth embodiment, the first flow channel (outside) of the cylindrical accordion heat exchanger is an air heat release and cooling channel, the channel is expanded and extruded by the ventilation pressure and the working medium of the second flow channel when in operation, the pressure difference acting at the same time is not large, and the pressure deformation is basically not generated, the main technical requirement of the first flow channel is that the heat exchange coefficient is high, so that the heat exchange wall surface is required to be a flow channel with the same width as that of a cross ripple or a boss type; the second flow channel (inner side) of the cylindrical accordion heat exchanger is a micro-fan annular flow channel with wide outer part and narrow inner part, and a low-temperature organic working medium is injected into the flow channel during operation and circularly works in a heat absorption evaporation state, so that the heat exchange at the side is better than that of an air flow channel; the condenser is in the circulating heat release condensation process of high-pressure organic working media, and not only requires good channel pressure bearing but also is a tapered flow channel, so that partition plates are arranged in an inlet and outlet collection box of an accordion open type heat exchanger (used as a condenser) and an inlet and outlet collection box of an accordion heat exchanger (used as an evaporator) of the air source heat pump water heater, the condenser is internally formed into a tapered channel, the evaporator is internally formed into a tapered channel, and the compressor, the air supply motor and the throttle valve are arranged in a circular central cavity, so that the device is compact in structure, noise generated by the device is isolated, and heat is absorbed by the seal plates and is brought out by the organic working media; in addition, under fixed or the slow environment of removal, the air of first runner (outside) is exothermic to be cooled down and can be formed the condensation effect and realize air system water, and air humidity is big more, the lower system water yield of temperature is more, can also cancel the fan when removing the environment piece and lean on the natural air inlet of removal, like high-speed railway and aircraft etc..

The operation process is that the axial flow fan sucks in filtered hot air and pressure-feeds the hot air into the first flow channel of the cylindrical accordion for heat release and discharge, meanwhile, the compressor compresses low-temperature and low-pressure gaseous organic working media which absorb heat and evaporate in the second flow channel of the accordion into high-temperature and high-pressure gaseous organic working media and sends the gaseous organic working media into a condenser, the gaseous organic working media change into low-temperature and high-pressure liquid organic working media after releasing heat (heating water in a water tank), the liquid organic working media are reduced in pressure by a throttle valve and then become low-temperature and low-pressure liquid organic working media, the organic working media are newly sent into the second flow channel for heat absorption and evaporation, the heat in the air is circularly driven by the compressor to be conveyed to the water tank, the heat source in the air is utilized to prepare hot water in summer, and the air with the reduced temperature has the cold and cool effect to adjust the indoor temperature; in spring and autumn and winter can be with fan reversal and arrange the air of taking a breath outside indoor hot-air and stay the heat in the water tank, in addition, can get back the heat in the water tank through the switching of cross valve and heat into room air realization heating winter. The device is characterized in that the air flow channel has long time, the temperature change of the air flow channel is large (the device can be used for air dehumidification or water production and ventilation), the parabolic flow channel with high pressure bearing capacity can be adopted, the heat exchange effect of the organic working medium in the variable cross-section flow channel is good, the flow resistance is low, the noise of the device is low, the device is compact in integration, the device is particularly suitable for indoor ventilation of venues with centralized personnel in autumn and winter and in cold regions, the air to be exchanged such as gymnasiums, bathing ponds, waiting rooms, airports, subways and the like is a good heat source, and the device can recycle and discharge the heat of the indoor air to be exchanged.

Example eleven:

in the eleventh embodiment, a waste heat pump apparatus is provided, which is composed of a cylindrical accordion open type heat exchanger, as shown in fig. 14, on the basis of the first embodiment, the accordion open type heat exchanger 35 is a vertical cylindrical shape, and a total inlet of the annular inlet collection tank 10 and a total outlet of the annular outlet collection tank 11 of the first flow channel 3 are respectively communicated with a three-way valve to form a total inlet three-way valve and a total outlet three-way valve (not labeled in the figure), so that the first flow channel 3 forming the vertical cylindrical accordion open type heat exchanger 35 is a heating and cooling heat exchange flow channel (i.e., a driving working medium flow channel) of the heat pump apparatus; further, the upper end and the lower end of the cylindrical accordion open type heat exchanger 35 are correspondingly and fixedly connected with an upper cylinder sleeve 36 and a lower cylinder sleeve 37 respectively, the circular seal plate II2 is arranged in the cylinder of the cylindrical accordion open type heat exchanger 35 to seal the second flow channel 4 and seal the lower end of the second flow channel to form an upper opening of the second flow channel 4, the upper opening and the lower opening are on the side ring surface, the inner edge of the lower seal 5 is provided with a circular partition plate 18, the center of the partition plate 18 is provided with a piston rod 38 which slides in a sealing manner, the lower end of the piston rod is fixedly connected with a lower piston 39 in the lower cylinder sleeve 37, and the space formed between the lower piston 39 and the partition plate 18 is an independent energy storage cavity 40 which is sealed, and an energy storage spring 41 which is sleeved on the piston rod 38 is arranged in the space; an upper piston 42 is fixedly connected to the upper end of the piston rod 38 in the upper cylinder sleeve 36, a horn-shaped rubber folding skirt 43 with a downward skirt opening is arranged between the upper piston 42 and the partition plate 18 on the piston rod 38, and a space formed between the upper piston 42 and the partition plate 18 is a power cavity and is communicated with an upper inlet and a lower inlet of the second flow passage 4; an upper pumping chamber 44 is formed in the cylinder inner space of the upper cylinder liner 36 and above the upper piston 42 and communicates with the inlet check valve 45 and the upper and lower cylinder communication check valves 46, and a lower pumping chamber 47 is formed in the cylinder inner space of the lower cylinder liner 37 and below the lower piston 39 and communicates with the outlet check valve 50 and connects the upper and lower cylinder communication check valves 46 through the upper and lower cylinder communication pipes 51, thereby forming a pressurized flow path of the circulating working medium (refrigerant) of the inlet check valve 45, the upper pumping chamber 44, the upper and lower cylinder communication check valves 46 and the upper and lower cylinder communication pipes 51, the lower pumping chamber 47, and the outlet check valve 50 in sequence.

The invention relates to a waste heat pump device, which is a change of heating or cooling process formed by a cylindrical accordion heat exchange structure, so that a non-azeotropic working medium pair (organic working medium) forms the change of evaporation and absorption process (equivalent to a device combining a generator and an absorber of absorption refrigeration), and further forms the up-and-down movement of an upper piston and a lower piston, thereby respectively bringing the change between the volume of a power cavity and the volume of an upper pumping cavity and the change between the volume of an energy storage cavity and the volume of a lower pumping cavity, and then forming a pressurized flow passage of a circulating working medium of the waste heat pump device by virtue of each one-way valve, thereby realizing the pressure kinetic energy of the heat energy lifting circulating working medium, namely the conversion of the heat energy and the kinetic energy.

Before the device works normally, the energy storage spring in the energy storage cavity enables the upper piston and the lower piston to be positioned at the lower part, the power cavity and the second flow passage 4 are filled with environment-friendly non-azeotropic working medium pairs, namely power working media (such as ammonia water and the like) and are in a cold state, the flowing working process of the waste heat pump pressurization driving circulating working medium is divided into a heating process and a cooling process, and the heating working process is as follows: the main inlet three-way valve and the main outlet three-way valve are cut into the working medium to be a hot working medium (such as hot air) for circulation, the non-azeotropic working medium pair of the second flow passage is heated through the first flow passage of the waste heat pump device, and the (ammonia) of the non-azeotropic working medium pair is gradually evaporated and expanded to do work, namely, the upper piston and the lower piston start to move from the lower end to the upper end, the space volume of the upper pumping chamber is gradually reduced to generate an extrusion effect, and then the refrigerant from the inlet one-way valve is extruded to the upper cylinder communicating pipe from the upper cylinder communicating one-way valve and the lower cylinder communicating pipe from the upper cylinder communicating one-way valve, and simultaneously, the space volume of the lower pumping chamber is gradually increased to generate the refrigerant in the upper cylinder communicating pipe and the lower cylinder communicating pipe from the lower cylinder communicating one-way valve, in addition, the upward movement process of the lower piston also enables the spring of the energy storage chamber to be compressed to generate an energy storage effect, and when the lower piston moves up to the terminal point, so that the refrigerant is pressed out of the upper pumping chamber and the lower pumping chamber to pump the refrigerant from the upper pumping chamber and has the energy storage effect The working process is carried out; the cooling working process is as follows: the main inlet three-way valve and the main outlet three-way valve are switched into a state that a driving working medium is a cold working medium (such as cold air) to circulate, the non-azeotropic working medium pair of the second flow channel is cooled through the first flow channel, ammonia gas is gradually absorbed into the liquid of the working medium pair, the volume is reduced, the pressure is gradually reduced, when the pressure is smaller than the pressure of the energy storage spring, the upper piston and the lower piston start to move from the upper end to the lower end, the space volume of the upper pumping cavity is gradually increased in the process to generate the suction of the refrigerant from the inlet one-way valve, meanwhile, the space volume of the lower pumping cavity is gradually reduced to generate the extrusion of the refrigerant from the outlet one-way valve, and meanwhile, the energy of the energy storage spring is completely released when the lower piston drives the upper piston to move to the lower end, so that the cooling process forms the effects of energy storage release and the suction of the refrigerant in the upper pumping cavity and the pressure cavity and the extrusion of the refrigerant in the lower pumping cavity, thereby completing the refrigerant compression removal; the diameter of the upper piston can be larger than that of the lower piston, so that the pumping volume of the upper pumping cavity is larger than that of the lower pumping cavity, and the pressure of the refrigerant pumped into the lower pumping cavity is increased; the structure absorbs heat in the second flow channel to move upwards to evaporate and drive ammonia water to form annular circulation when heating, namely the piston rod moves downwards to open the folding skirt to push the ammonia water to continue to form annular circulation (the folding skirt is in a folded state to reduce resistance when the piston rod moves upwards), and the upper edge height of the circular sealing plate must adapt to centripetal annular circulation of volume change of the power working medium solution, so that the annular circulation of the non-azeotropic working medium pair improves the evaporation or absorption efficiency; the heating and cooling cycle forms a pressurized refrigerant delivery process, i.e., a process of converting thermal energy into kinetic energy (the effect of piston weight and friction is not considered).

The first flow channel (outer side) of the accordion open type heat exchanger is a driving flow channel for heating or cooling power working media, so that the heat exchange wall surface of the first flow channel (outer side) is required to be a cross corrugated or boss type equal-width flow channel so as to meet the requirements of high heat exchange coefficient and bearing the expansion pressure of the second flow channel; the second flow channel (inner side) of the accordion heat exchanger is a flow channel (absorbing heat and evaporating into gas state and expanding to do work outwards) for evaporating or absorbing and generating power by a heated or cooled working medium pair, the side flow channel is a micro-fan annular flow channel with wide outer part and narrow inner part, if the widths of the inner flow channel and the outer flow channel of the open type heat exchanger of the accordion are equal-width flow channels, a 'parabolic flow channel' is needed to solve the problem of micro-fan annular (discrete effect) generated by unequal inner and outer diameters, meanwhile, the end part is convenient to be folded and plugged by sealing strips, and the flow channels at two sides adopt a heat exchange structure with high pressure bearing such as a boss or crossed corrugation.

The driving working medium of the first flow passage of the waste heat pump device is the same working medium (such as air or water or heat conducting oil), but the temperature of the driving working medium is different, hot working medium enters from the upper end of the first flow passage and flows downwards along the flow passage to heat the second flow passage, cold working medium enters from the lower end of the first flow passage and flows upwards along the flow passage to cool the second flow passage, and an upper three-way valve and a lower three-way valve of the first flow passage are switched along delay to save energy, reduce emission and improve the utilization rate of waste heat; the energy storage cavity can be filled with gas with low adiabatic index as energy storage gas; the two or more heat pump devices of the invention provide organic working medium continuous circulation power in systems for waste heat refrigeration and the like, so as to solve the problem of limited practicability of other (absorption, adsorption, injection and the like) waste heat refrigeration modes.

Claims

1. An accordion open heat exchanger, which is composed of an accordion (I1), a seal (5), a closing plate (II1), a first inlet collection box (6) with a general inlet and a first outlet collection box (7) with a general outlet, and is characterized in that:

A. the accordion (I1) is a heat exchange structure formed by connecting and stacking thin plates (1) according to the same heat exchange surface units (2) and stamping various shapes on the thin plates, repeatedly folding the thin plates and ensuring that the folded heat exchange surface units (2) are connected and stacked together to form a first flow channel (3) which is separated from the heat exchange surface units (2), is formed by one surface wall surface of the thin plates (1) and conducts heat, and is formed by the other side of the other surface wall surface of the thin plates (1), and a plurality of long and narrow first flow channels (3) and second flow channels (4) are connected and stacked together at intervals to form the accordion (I1), each heat exchange surface unit (2) is connected, stacked and then mutually parallel to form a square heat exchange structure with a long and narrow rectangular cross section, or else, the heat exchange surface units are not parallel to form a sector ring body or a cylinder heat exchange structure with a long and narrow sector ring-shaped cross section at least on one side;

B. the heat exchange surface units (2) are a plurality of mutually connected heat exchange surfaces which are arranged on the metal sheet (1) according to the same length and have the same area and the same interval, the wall surfaces of the heat exchange surface units (2) can be corrugated surfaces which have flat surfaces and various up-down fluctuation heights or different shapes, and can also be curved parabolic surfaces, the wall surface shapes of the heat exchange surface units (2) formed on one side are in a flow channel on one side after being punched and folded, the wall surface shapes of the heat exchange surface units (2) on the other side are in a flow channel on the other side, and the continuous oblique corrugations of the heat exchange surface units (2) form crossed corrugations after being folded;

C. the heat exchange flow channel of the accordion (I1) is characterized in that a plurality of long and narrow first flow channels (3) and second flow channels (4) are formed on one side of a thin plate (1) through stamping and folding, the long and narrow first flow channels and the second flow channels are separated by the thin plate (1) and are used as heat conduction of the heat exchange surface units (2), the first flow channels and the second flow channels are connected and stacked together at intervals to form two side heat exchange flow channels of the compact accordion (I1), the widths of the two side heat exchange flow channels can be equal or unequal, various wall surfaces of the heat exchange surface units (2) form various flow channel structures, and the first flow channels 3 and the second flow channels 4 can form cylindrical heat exchange structures of the equal-width heat exchange flow channels after the bent parabolic heat exchange surface units 2 are folded;

D. the sealing plates (II1) and the sealing strips (5) are used for respectively sealing any side flow channel and corresponding end part of the accordion (I1) to form an inlet and an outlet of three flow channels and arranging an inlet and an outlet collection box on the inlet and the outlet, any side flow channel of the accordion (I1) is sealed by the sealing plates (II1) to form an inlet and an outlet of flow channels at two ends and the sealing strips (5) are used for sealing two ends of the flow channel at the other side, the end part of the flow channel at any side is sealed by the sealing strips (5) to form an inlet and an outlet of the flow channel at the end side and at the two ends of the sealing plates (II1), and the two ends of the flow channel are alternately sealed by the sealing strips (5) to form an inlet and an outlet of the flow channel with one end side between the sealing plates (II1) and the sealing strips (5) and the other end part;

E. the first inlet collection box (6) with the total inlet and the first outlet collection box (7) with the total outlet are arranged on an inlet and an outlet of a flow channel formed by a closing plate (II1) and a seal (5) for plugging an accordion (I1) in three modes, so that the first inlet collection box (6) with the total inlet, a first flow channel (3) of the accordion (I1) and a first heat exchange passage of the accordion (I1) of the first outlet collection box (7) with the total outlet are formed, the accordion open heat exchanger for exchanging heat among open second flow channels (4) is formed, a partition plate can be arranged in the collection box to enable the first flow channel (3) of the accordion (I1) to form a uniform cross-section flow channel or a variable cross-section flow channel which reciprocates back and forth, the gradually expanding type variable cross-section flow channel is a heat exchanger, and the gradually reducing type variable cross-section flow channel is a condensing type heat exchanger.

2. The accordion type heat exchange structure according to claim 1, wherein the other side flow passage and the corresponding end of the accordion (I1) are respectively sealed by a sealing plate (II2) and a seal (5) to form the inlet and outlet of the side flow passage, and a second inlet collection box (8) with a general inlet and a second outlet collection box (9) with a general outlet are further arranged on the side flow passage, thereby forming the accordion type heat exchanger in which the second heat exchange passages of the accordion with the general inlet collection box (8), the second flow passage (4) of the accordion and the second outlet collection box (9) with the general outlet are sequentially formed and the first heat exchange passages are heat exchanged.

3. An accordion open heat exchanger according to claim 1, wherein the ends of the first flow passage (3) and the second flow passage (4) of the accordion (I2) are symmetrically sealed by a sealing plate (II1) and a seal (5) respectively, so that the inlet and the outlet of the first flow passage (3) of the accordion (I2) and the inlet and the outlet of the second flow passage (4) of the accordion (I1) are respectively merged into an inlet header (10) with a main inlet and an outlet header (11) with a main outlet at two ends, thereby forming a heat exchange passage of an inlet collection box (10) with a main inlet, a second flow passage (4) of the accordion (I1) and a first flow passage (3) of the accordion (I2) which are connected in parallel, and an outlet collection box (11) with a main outlet in turn, and heat exchange passages which exchange heat with the open first flow passage (3) of the accordion (I1) and the open second flow passage (4) of the accordion (I2), respectively.

4. Use of a gas steamer according to claim 1, characterized in that the accordion (I1) is a cylindrical vertical structure, and the first flow channel (3) on the outside is closed off by a circular closing plate (II1), the upper end of the first flow channel (3) and the lower end of the second flow channel (4) of the accordion (I1) are closed off by a seal (5), so that an annular first outlet collection box (7) is arranged between the upper edge of the circular closing plate (II1) and the seal (5), the first inlet collection box (10) is a jacketed kettle and is arranged at the lower end of the cylindrical accordion (I1), the annular jacket at the upper part of the jacketed kettle is adapted to and fixedly connected with the lower end of the cylindrical accordion (I1) so that the inner jacket of the jacketed kettle is a bottom (14), the center of the outer jacket kettle of the jacketed kettle is a total inlet and is provided with a gas burner (15), thereby forming a gas range (15) at the center of the outer gas burner, a gas range (15) and a gas range (15) in turn, A jacket kettle, a first flow passage (3) of the accordion (I1), a heat exchange passage of a first outlet collection box (7) with a main outlet, and a heat exchange structure between the first flow passage and a second flow passage (4) of the cylindrical accordion (I1).

5. The diesel exhaust particulate trap as set forth in claim 1, wherein the accordion (I1) is cylindrical and a sealing plate (II1) is disposed at the outer side thereof, the sealing plate (II2) is a perforated tube and has perforated fins (17) with wide and narrow intervals disposed therein and welded to the peaks of the first flow channel (3) in the tube of the cylindrical accordion (I1), ceramic carrier materials such as silicon carbide are disposed in the perforated tube (II2) of the perforated fins (17) and in the second flow channel (4) of the accordion flow channel (I1) to form a wall-flow particulate trap structure (16) having a cross-section similar to "sunflower", and an inlet collection box (12) having a total inlet and an outlet collection box (13) having a total outlet are disposed at both ends of the "sunflower" particulate trap structure (16), respectively, thereby sequentially forming the inlet collection box (12) having a total inlet, the "sunflower" particulate trap structure (16), and the outlet collection box (13) having a total outlet, and sequentially forming the inlet collection box (12), the "sunflower" particulate trap structure (16) having a total inlet and a particulate trap structure, A diesel exhaust micro-particle filtering passage with a main outlet and an outlet collection box (13); the heat exchange wall surface of the first flow channel (3) at the outer side of the accordion (I1) is a cross corrugated or boss type equal-width flow channel, and the cross section of the second flow channel (4) at the inner side of the accordion flow channel (I1) is a fan-shaped annular flow channel with a wide outer part and a narrow inner part.

6. An exhaust gas purification apparatus for diesel engines having a noise-reducing performance by using an oxidation catalyst as claimed in claim 2, wherein the first accordion type heat exchanger (48) and the second accordion type heat exchanger (49) are cylindrical and the first flow path (3) thereof has a collection tank (6) for inlet with a total inlet and a collection tank (7) for outlet with a total outlet each provided outside both ends of the cylinders and the second flow path (4) thereof has a collection tank for inlet and outlet each provided at an end, and the second flow path (4) of the first accordion type heat exchanger (48) has a particulate filter trapping structure, the second flow path (4) of the second accordion type heat exchanger (49) has an oxidation catalyst honeycomb structure, and the circular closing plates (II2) and (II4) each have a partition plate (18) provided therein and are communicated with the collection tanks for inlet and outlet of the adjacent ends of the cylindrical first accordion type heat exchanger (48) and the second accordion type heat exchanger (49) by a perforated pipe (19) to allow the first accordion type heat exchanger (48) and the second accordion type heat exchanger (49) to communicate with each other The two ends of a cylindrical second accordion heat exchanger (49) and a cylindrical first accordion heat exchanger (48) which are axially connected in series by the annular space (20) are respectively provided with an inlet collection box (12) with a main inlet and an outlet collection box (13) with a main outlet of a purifier, so that a diesel engine tail gas silencing and purifying passage which is communicated with the central space (21), the second flow channel (4) of the first accordion heat exchanger (48) and the outlet collection box (13) with the main outlet is sequentially formed, wherein the two ends of the cylindrical second accordion heat exchanger (49) and the cylindrical first accordion heat exchanger (48) which are communicated by the annular space (20) are respectively provided with an inlet collection box (12) with the main inlet and an outlet collection box (13) with the main outlet.

7. An exhaust gas purifying apparatus for a diesel engine having a noise elimination performance by closely coupling an oxidation catalyst and a particulate filter with a selective catalytic reduction apparatus according to claim 2, wherein the first accordion type heat exchanger (48) and the second accordion type heat exchanger (49) are cylindrical and an inlet header tank (6) with a total inlet and an outlet header tank (7) with a total outlet of the first flow passage (3) are respectively provided outside both ends of the cylinders, and an inlet header tank and an outlet header tank of the second flow passage (4) are respectively provided at the ends, the second flow passage (4) of the first accordion type heat exchanger (48) is provided with a wall flow type particulate filtering and trapping structure, the second flow passage (4) of the second accordion type heat exchanger (49) is provided with an oxidation catalyst honeycomb structure, both ends of the circular closing plate (II4) of the second accordion type heat exchanger (49) are axially extended and one end of the circular closing plate (II2) of the first accordion type heat exchanger (48) is connected to form a mixer (22) and make both of them The inlet and outlet collection boxes at the adjacent ends of the cylindrical accordion heat exchangers (49) and (48) form an annular space (20), two ends of two cylindrical accordion heat exchangers (49) and (48) which are axially connected in series by the annular space (20) are respectively provided with an inlet collection box (12) with a total inlet and an outlet collection box (13) with a total outlet of a purifier, the total outlet of the outlet collection box (13) of the purifier is communicated with the inlet of a mixer (22), the outlet collection box (13) close to the inlet end of the mixer (22) is provided with a urea nozzle (23), the other end of a circular closing plate (II4) penetrates through the inlet collection box (12) of the purifier and is sequentially communicated with a reducing bed inlet chamber (24), a reducing bed (25) and a reducing bed outlet chamber (26) of the selective catalytic reduction device, and the inlet collection box (12) with the total inlet and the reducing bed outlet chamber (26) are sequentially formed, so that the inlet collection box (12) with the total inlet and the reducing bed outlet chamber are sequentially communicated with the urea nozzle, A second flow channel (4) of a second accordion heat exchanger (49), an annular space (20), a second flow channel (4) of a first accordion heat exchanger (48), an outlet collection box (13) with a main outlet, a mixer (22), a reducing bed inlet chamber (24), a reducing bed (25) and a diesel engine tail gas silencing and purifying passage of a reducing bed outlet chamber (26).

8. The air source heat pump water heater according to claim 2, wherein the accordion type heat exchanger is cylindrical, a first inlet collection box (10) with a total inlet and a first outlet collection box (11) with a total outlet, both ends of which are respectively provided with a first flow passage (3), an annular second inlet collection box (8) with a total inlet and an annular second outlet collection box (9) with a total outlet are arranged inside both ends of the cylindrical accordion type heat exchanger, furthermore, a filtering shutter (27) and a shutter (28) are respectively arranged at the total inlet and outlet outside both ends of the first inlet collection box (10) with a total inlet and the first outlet collection box (11) with a total outlet, a partition plate (18) is respectively arranged at the inner edge of the annular second inlet collection box (8) with a total inlet and the annular second outlet collection box (9) with a total outlet, the cylinder inner space of the cylindrical accordion type heat exchanger is sealed into an independent circular central cavity (29) by two partition plates (18), a compressor (31) is arranged in the circular central cavity (29) close to the first outlet collection box (11), an axial flow fan (30) is arranged on the partition plate (18) close to the first inlet collection box (10) and enables an impeller and a motor of the axial flow fan to be respectively positioned in the first inlet collection box (10) and the circular central cavity (29), a throttle valve (34) is arranged between the fan motor and the compressor (31) in the circular central cavity (29), in addition, a water tank (32) internally provided with an accordion open type condenser (33) is also arranged outside the accordion type heat exchanger, a total inlet of the first inlet collection box (6) of the accordion open type condenser (33) is communicated with an outlet of the compressor (31) through a pipeline, and an inlet of the compressor (31) is communicated with a total outlet of the annular second outlet collection box (9), The total inlet of the annular second inlet collection tank (8) is communicated with the outlet of the throttle valve (34), the inlet of the throttle valve (34) is communicated with the total outlet of the outlet collection tank (7) of the accordion open condenser (33) through a pipeline, thereby forming an organic working medium closed circulation passage of the compressor (31), the accordion open condenser (33), the inlet and outlet collection boxes (6) and (7) thereof, the throttle valve (34), the second flow passage (4) of the cylindrical accordion heat exchanger, the annular second inlet and outlet collection boxes (8) and (9) thereof and the compressor (31), and the air filtering and heat releasing cooling channels of the filtering shutter (27), the first inlet collection box (10), the impeller of the axial flow fan (30), the first flow channel (3) of the cylindrical accordion type heat exchanger, the first outlet collection box (11) and the shutter (28) which are formed in sequence exchange heat.

9. The application of the waste heat pump device as claimed in claim 1, wherein the accordion open type heat exchanger (35) is in a vertical cylinder shape, and an upper cylinder sleeve (36) and a lower cylinder sleeve (37) are respectively fixedly sealed and fixed on the upper end and the lower end of the accordion open type heat exchanger, the circular sealing plate (II2) is arranged in the cylinder of the cylindrical accordion open type heat exchanger (35) to seal the second flow channel (4) and seal the lower end of the second flow channel (4), the upper opening of the second flow channel (4) is formed by sealing the lower end of the circular sealing plate, the upper end and the lower opening of the second flow channel are arranged on the side ring surface, a circular partition plate (18) is arranged at the inner edge of the lower sealing strip (5), a piston rod (38) which slides in a sealing way is arranged at the center of the partition plate (18), the lower end of the piston rod is fixedly connected with a lower piston (39) in a lower cylinder sleeve (37), a space formed between the lower piston (39) and the partition plate (18) is an independent energy storage cavity (40) which is sealed, and an energy storage spring (41) which is sleeved on the piston rod (38) is arranged in the space; an upper piston (42) is fixedly connected to the upper end of the piston rod (38) in the upper cylinder sleeve (36), a horn-shaped rubber folding skirt (43) with a downward skirt opening is arranged on the piston rod (38) between the upper piston (42) and the partition plate (18), and a space formed between the upper piston (42) and the partition plate (18) is a power cavity and is communicated with an upper inlet and a lower inlet of the second flow passage (4) in an alternating manner; an upper pumping cavity (44) is formed in the cylinder inner space of the upper cylinder sleeve (36) and on the upper portion of the upper piston (42) and communicated with a feeding port one-way valve (45) and an upper cylinder and lower cylinder communicating one-way valve (46), a lower pumping cavity (47) is formed in the cylinder inner space of the lower cylinder sleeve (37) and on the lower portion of the lower piston (39) and communicated with an outlet one-way valve (50) and connected with the upper cylinder and lower cylinder communicating one-way valve (46) through an upper cylinder and lower cylinder communicating pipe (51), and therefore a circulating working medium pressurized flow passage of the feeding port one-way valve (45), the upper pumping cavity (44), the upper cylinder and lower cylinder communicating one-way valve (46), the upper cylinder and lower cylinder communicating pipe (51), the lower pumping cavity (47) and the outlet one-way valve (50) is formed in sequence.