Alternating flow heat exchanger and heat power conversion system

Abstract

The application provides an alternating flow heat exchanger and a heat power conversion system, and relates to the field of heat exchangers.The alternating flow heat exchanger comprises a heat exchange core, the heat exchange core comprises a gas passage and a liquid passage, the gas passage penetrates through the heat exchange core, heat exchange liquid in the liquid passage moves along the axial direction of the gas passage, a first shunt hole is arranged at one end of the heat exchange core, a second shunt hole is arranged at the other end of the heat exchange core, the first shunt hole and the second shunt hole are in communication with the liquid passage, an inlet liquid passage is in communication with the first shunt hole, and an outlet liquid passage is in communication with the second shunt hole.The alternating flow heat exchanger provided by the application is characterized in that the first shunt hole in communication with the inlet liquid passage and the second shunt hole in communication with the outlet liquid passage are arranged at the upper and lower ends of the heat exchange core, the heat exchange liquid in the liquid passage is caused to move along the axial direction of the gas passage, and the unevenness of the circumferential temperature distribution in the alternating flow heat exchanger caused by the temperature rise of the heat exchange fluid is reduced, and the heat exchange performance of the alternating flow heat exchanger is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat exchangers, in particular to an alternating flow heat exchanger and a heat power conversion system. BACKGROUND

[0002] The alternating flow heat power conversion system is a high-efficiency, reliable and environmentally friendly energy conversion device, including a free piston Stirling heat engine, a thermoacoustic heat engine, a pulse tube refrigerator and the like. The alternating flow heat power conversion system is widely used in the fields of solar power generation, aviation, superconductivity and the like. In the heat exchanger of the alternating flow heat power conversion system, the inner gas performs alternating flow, and the outer heat carrying fluid performs unidirectional stable flow. The heat exchange between the inner gas and the outer fluid is realized through the interaction between the inner gas and the inner wall of the heat exchanger, the heat conduction of the solid structure of the heat exchanger and the interaction between the outer wall of the heat exchanger and the external fluid.

[0003] At present, the commonly used alternating flow heat exchanger mainly includes fin type and shell and tube type. For example, an existing fin type heat exchanger structure has a stainless steel shell on the outside, a red copper heat exchange core on the inside, and an external fluid flow channel between the two. The working gas in the system flows in the fin gap. For example, an existing shell and tube type heat exchanger structure has a gas working medium flowing inside a circular tube, and an external fluid flowing between the circular tube outside and the shell.

[0004] In the two types of heat exchangers, when the inlet temperature and the outlet temperature of the heat carrying fluid differ greatly, a large temperature gradient exists in the circumferential direction of the heat exchanger, that is, the temperature distribution is uneven in the cross section perpendicular to the axis direction, thereby causing uneven heat exchange and flow of the internal gas and reducing the performance of the heat exchanger. SUMMARY

[0005] The present application provides an alternating flow heat exchanger and a heat power conversion system, which are used to solve the defect that, in the prior art, when the heat exchange fluid flows along the circumferential direction in the heat exchanger, a large temperature gradient exists in the circumferential direction of the heat exchanger when the inlet temperature and the outlet temperature of the heat exchange fluid differ greatly, that is, the temperature distribution is uneven in the cross section perpendicular to the axis direction. The gas passage of the heat exchange core penetrates the heat exchange core along the axis direction of the heat exchange core, the heat exchange liquid in the liquid passage moves along the axis direction of the gas passage, the unevenness of the circumferential temperature distribution in the alternating flow heat exchanger caused by the temperature rise of the heat exchange fluid is reduced, and the performance of the alternating flow heat exchanger is improved.

[0006] The present application provides an alternating flow heat exchanger, which comprises:

[0007] The heat exchange core comprises a gas passage and a liquid passage, the gas passage penetrates the heat exchange core along the axial direction of the heat exchange core, the heat exchange liquid in the liquid passage moves along the axial direction of the gas passage, a first shunt hole is arranged at one end of the outer wall of the heat exchange core, a second shunt hole is arranged at the other end of the outer wall of the heat exchange core, and the first shunt hole and the second shunt hole are communicated with the liquid passage;

[0008] The liquid inlet passage is communicated with the first shunt hole.

[0009] The liquid outlet passage is communicated with the second shunt hole.

[0010] According to the alternating flow heat exchanger provided by the application, the liquid passage comprises a first transverse passage, a second transverse passage and a through passage, the first transverse passage is communicated with the first shunt hole, the second transverse passage is communicated with the second shunt hole, and the through passage communicates the first transverse passage and the second transverse passage,

[0011] The through passage is parallel to the axial direction of the gas passage.

[0012] According to the alternating flow heat exchanger provided by the application, the gas passage and the liquid passage are alternately distributed, and the gas passage comprises sawtooth-shaped fins.

[0013] According to the alternating flow heat exchanger provided by the application, the gas passage and the liquid passage are alternately distributed, and the gas passage comprises gas flow holes.

[0014] According to the alternating flow heat exchanger provided by the application, the axial length of the gas passage is less than the maximum stroke of the gas.

[0015] According to the alternating flow heat exchanger provided by the application, the liquid passage is an inner cavity of the heat exchange core, the gas passage is a gas guide pipe, the gas guide pipe is arranged in the inner cavity and penetrates the inner cavity,

[0016] One end of the inner cavity is provided with the first shunt hole, and the other end of the inner cavity is provided with the second shunt hole.

[0017] According to the alternating flow heat exchanger provided by the application, the liquid passage comprises a first partition plate and a second partition plate, the first partition plate and the second partition plate are alternately distributed along the axial direction of the gas guide pipe,

[0018] The first partition plate is arranged on one side of the inner cavity, the extension end of the first partition plate is spaced from the other side of the inner cavity, the second partition plate is arranged on the side of the inner cavity opposite to the first partition plate, and the extension end of the second partition plate is spaced from the side of the inner cavity where the first partition plate is arranged.

[0019] According to the alternating flow heat exchanger provided by the application, the heat exchange core is annular, the first shunt hole is symmetrically arranged at the upper end of the outer wall of the heat exchange core, and the second shunt hole is symmetrically arranged at the lower end of the outer wall of the heat exchange core,

[0020] The gas channel is symmetrically arranged in the heat exchange core.

[0021] According to the alternating flow heat exchanger provided by the application, the liquid inlet channel is provided with a liquid inlet, the liquid outlet channel is provided with a liquid outlet, and the pair of liquid inlets and liquid outlets are diagonally arranged on the alternating flow heat exchanger.

[0022] The application further provides a heat power conversion system comprising a regenerator and the alternating flow heat exchanger.

[0023] One end of the regenerator is communicated with one end of the gas channel, the liquid inlet channel is close to the regenerator, and the liquid outlet channel is away from the regenerator.

[0024] The alternating flow heat exchanger provided by the application comprises a gas channel and a liquid channel for heat exchange of the gas, the gas channel penetrates through the heat exchange core along the axis direction of the heat exchange core, the liquid channel is arranged in the heat exchange core, the first shunt hole is symmetrically arranged at the upper end of the outer wall of the heat exchange core, the second shunt hole is symmetrically arranged at the lower end of the outer wall of the heat exchange core, the heat exchange liquid in the liquid channel moves along the axis direction of the gas channel, the circumferential temperature distribution non-uniformity in the alternating flow heat exchanger caused by the temperature rise of the heat exchange fluid is reduced, and the heat exchange performance of the alternating flow heat exchanger is improved.

[0025] Further, in the heat power conversion system provided by the application, since the alternating flow heat exchanger is provided, the various advantages of the alternating flow heat exchanger are also provided. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0027] Figure 1 is one of the overall structures of the first alternating flow heat exchanger provided by the application;

[0028] Figure 2 is Figure 1 is a top view of the first alternating flow heat exchanger in

[0029] Figure 3 is Figure 2 is a sectional view of

[0030] Figure 4 is the second overall structure of the second alternating flow heat exchanger provided by the present application;

[0031] Figure 5 is Figure 4 is a sectional axonometric view of the second alternating flow heat exchanger in

[0032] Figure 6 is the third overall structure of the third alternating flow heat exchanger provided by the present application;

[0033] Figure 7 is Figure 6 is one of the top views of the third alternating flow heat exchanger in

[0034] Figure 8 is Figure 7 is a sectional view of

[0035] Figure 9 is a sectional axonometric view of the third alternating flow heat exchanger in

[0036] Figure 10 is a sectional axonometric view of the fourth alternating flow heat exchanger in

[0037] Figure 11 is a partial schematic view of the gas guide pipe with fins;

[0038] Figure 12 is a schematic view of the structure of the heat power conversion system.

[0039] Reference signs:

[0040] 100: heat exchange core; 101: liquid passage; 102: gas passage; 103: first shunt hole; 104: second shunt hole; 110: first transverse passage; 111: second transverse passage; 112: through passage; 113: gas flow hole; 120: gas guide pipe; 121: inner cavity; 122: first partition plate; 123: second partition plate; 130: upper cover plate; 131: outer shell; 132: lower cover plate; 133: inner shell; 200: liquid inlet passage; 210: liquid outlet passage; 201: liquid inlet; 202: liquid outlet; 300: regenerator; 301: first alternating flow heat exchanger; 302: second alternating flow heat exchanger; 303: phase adjuster; 304: linear motor unit. DETAILED DESCRIPTION

[0041] In order to make the objects, technical solutions and advantages of the present application clearer, the following will be combined with the drawings in the present application to clearly and completely describe the technical solutions in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based upon the embodiments in the present application, all other embodiments obtained by those ordinarily skilled in the art without creative effort belong to the scope of the present application.

[0042] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only intended to facilitate the description of the embodiments of the present application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0043] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0044] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0045] The following will be combined Figures 1 to 12 The embodiments of the present application are described. It should be understood that the following description is only a schematic embodiment of the present application, and does not constitute a limitation on the present application.

[0046] As Figures 1 to 3As shown, the application provides an alternating flow heat exchanger, comprising: a heat exchange core 100, an inlet liquid channel 200 and an outlet liquid channel 210, the heat exchange liquid is introduced from the inlet liquid channel 200, flows through the heat exchange core 100 to exchange heat with the gas passing through the heat exchange core 100, and the heat exchange liquid flows out from the outlet liquid channel 210 after heat exchange.

[0047] The heat exchange core 100 comprises a gas channel 102 and a liquid channel 101, the gas channel 102 penetrates the heat exchange core 100 along the axial direction of the heat exchange core 100, the heat exchange liquid in the liquid channel 101 moves along the axial direction of the gas channel 102, a first shunt hole 103 is arranged at one end of the outer wall of the heat exchange core 100, a second shunt hole 104 is arranged at the other end of the outer wall of the heat exchange core 100, and the first shunt hole 103 and the second shunt hole 104 are both in communication with the liquid channel 101. The inlet liquid channel 200 is in communication with the first shunt hole 103; and the outlet liquid channel 210 is in communication with the second shunt hole 104.

[0048] Specifically, the heat exchange core 100 is in a columnar shape, the first shunt hole 103 is arranged at the upper part of the outer wall of the heat exchange core 100 in an equidistant manner, the second shunt hole 104 is arranged at the lower part of the outer wall of the heat exchange core 100 in an equidistant manner, the first shunt hole 103 communicates one end of the liquid channel 101 with the inlet liquid channel 200, and the second shunt hole 104 communicates the other end of the liquid channel 101 with the outlet liquid channel 210. The heat exchange liquid enters the liquid channel 101 at one end and flows out from the other end of the liquid channel 101, and the flow direction of the heat exchange liquid in the liquid channel 101 is along the axial direction of the gas channel 102, thereby reducing the non-uniformity of the circumferential temperature distribution in the alternating flow heat exchanger caused by the temperature rise of the external heat exchange liquid.

[0049] For the heat exchange liquid in the liquid channel 101 moving along the axial direction of the gas channel 102, the heat exchange liquid can run in a direction parallel to the axial direction of the gas channel 102, or the heat exchange liquid can run in a spiraling trend along the axial direction of the gas channel 102.

[0050] In an optional embodiment of the application, the axial length of the gas channel is less than the maximum stroke of the gas. The gas flow is alternating flow. That is, the maximum length of the alternating flow heat exchanger is less than the maximum stroke of the gas.

[0051] In one embodiment of the present invention, the liquid inlet channel 200 is provided with a liquid inlet 201, and the liquid outlet channel 210 is provided with a liquid outlet 202, with a pair of liquid inlets 201 and liquid outlets 202 arranged diagonally. Specifically, the liquid inlet channel 200 may have one liquid inlet 201, and the liquid outlet channel 210 may have one liquid outlet 202. The liquid inlet channel 200 is arranged in a ring shape outside the heat exchange core 100, so that each of the first diversion holes 103 is connected to the liquid inlet 201. The liquid outlet channel 210 is arranged in a ring shape outside the heat exchange core 100, so that each of the second diversion holes 104 is connected to the liquid outlet 202. In the radial direction of the heat exchange core 100, the liquid inlet 201 and the liquid outlet 202 are located at both ends of the radial direction of the heat exchange core 100. In the axial direction of the heat exchange core 100, the liquid inlet 201 and the liquid outlet 202 are located at both ends of the axial direction of the heat exchange core 100, thus forming a diagonal arrangement of the liquid inlet 201 and the liquid outlet 202 on the entire alternating flow heat exchanger.

[0052] The liquid inlet 201 and liquid outlet 202 are located on both sides of the heat exchange core 100 along the axial direction. This allows the alternating flow heat exchanger to avoid a large temperature gradient in the circumferential direction when the temperature difference between the inlet and outlet of the heat exchange fluid is large. This makes the temperature distribution on the cross section of the heat exchange core 100 perpendicular to the axial direction more uniform, thereby preventing the performance of the heat-work conversion system from deteriorating.

[0053] like Figures 1 to 5 As shown, in one embodiment of the present invention, the liquid channel 101 includes a first transverse channel 110, a second transverse channel 111, and a through channel 112. The first transverse channel 110 communicates with a first diversion hole 103, the second transverse channel 111 communicates with a second diversion hole 104, and the through channel 112 connects the first transverse channel 110 and the second transverse channel 111. The through channel 112 is parallel to the axial direction of the gas channel 102.

[0054] In other words, the heat exchange liquid entering from the inlet channel 200 enters the first transverse channel 110 through the first diversion hole 103, flows through the through channel 112 into the second transverse channel 111, and then flows through the second diversion hole 104 into the outlet channel 210, and then flows out. The gas channel 102 is adjacent to the liquid channel 101, meaning that the gas channel 102 is adjacent to the through channel 112. When the heat exchange liquid flows through the through channel 112, which is parallel to the axis of the gas channel 102, it effectively exchanges heat with the gas flowing through the gas channel 102.

[0055] Furthermore, the lengths of the first transverse channel 110 and the second transverse channel 111 are the same as the width of the gas channel 102. The width of the gas channel 102 is its length in the direction perpendicular to the axis. It should be understood that the axial direction of the gas channel 102 is the direction of gas flow.

[0056] In an alternative embodiment of the present application, the first lateral channel 110 and the second lateral channel 111 are parallel, and perpendicular to the through channel 112, which is evenly distributed along the axial direction of the first lateral channel 110 and the second lateral channel 111.

[0057] In other words, the length of the first lateral channel 110 and the second lateral channel 111 is equal to the width of the gas channel 102, and in order to well exchange heat with the gas in the gas channel 102, the through channel 112 is evenly distributed in the width direction of the gas channel 102. Each set of first and second flow holes 103 and 104 corresponds to a set of liquid channels 101, the number of second lateral channels 111 corresponds to the number of first flow holes 103, and the number of second lateral channels 111 corresponds to the number of second flow holes 104.

[0058] In other alternative embodiments of the present application, the heat exchange core 100 is annular, the first flow hole 103 is evenly opened at the upper end of the outer wall of the heat exchange core 100, and the second flow hole 104 is evenly opened at the lower end of the outer wall of the heat exchange core 100. The gas channel 102 is evenly arranged in the heat exchange core 100.

[0059] As shown in Figure 2 and Figure 3 In another embodiment of the present application, the gas channel 102 and the liquid channel 101 are alternately distributed, and the gas channel 102 includes a sawtooth-shaped fin.

[0060] Specifically, the gas channel 102 is provided with a sawtooth-shaped fin, which can increase the heat exchange area with the liquid channel 101. For example, in some embodiments of the present application, the heat exchange core 100 is an annular solid body, including an inner annular surface and an outer annular surface, and the gas channel 102 and the liquid channel 101 are arranged between the inner annular surface and the outer annular surface. The first flow hole 103 and the second flow hole 104 are respectively opened at the upper and lower parts of the outer annular surface, and the gas channel 102 and the liquid channel 101 are evenly distributed in the annular solid body between the inner annular surface and the outer annular surface.

[0061] The gas channel 102 passes through the annular solid body in the axial direction, and the liquid channel 101 is solid between the two gas channels 102. The first lateral channel 110, the second lateral channel 111 and the through channel 112 are opened in the liquid channel 101. The length of the first lateral channel 110 and the second lateral channel 111 is equal to the width of the gas channel 102. In other words, the outer wall of the adjacent liquid channel 101 forms the gas channel 102. The sawtooth-shaped fin is opened on the outer wall of the liquid channel 101.

[0062] As shown in Figure 4 and Figure 5As shown, in another optional embodiment of the present invention, gas channels 102 and liquid channels 101 are alternately distributed, and gas channels 102 include airflow holes 113.

[0063] In other words, there is a liquid channel 101 between adjacent gas channels 102. The gas channels 102 can be equipped with evenly distributed airflow holes 113 along the direction of the first transverse channel 110. The airflow holes 113 penetrate the upper and lower surfaces of the heat exchange core 100.

[0064] For example, in some embodiments of the present invention, the heat exchange core 100 is a solid annular body, including an inner annular surface and an outer annular surface, with a gas channel 102 and a liquid channel 101 disposed between the inner and outer annular surfaces. A first diversion hole 103 and a second diversion hole 104 are respectively formed in the upper and lower parts of the outer annular surface, and the gas channel 102 and the liquid channel 101 are distributed at equal angles within the solid annular body between the inner and outer annular surfaces.

[0065] In this structure, the gas passage 102 has airflow holes 113 that extend vertically along the axis of the annular solid body, and a solid liquid passage 101 is formed between the two gas passages 102. A first transverse passage 110, a second transverse passage 111, and a through passage 112 are formed within the liquid passage 101. The lengths of the first transverse passage 110 and the second transverse passage 111 are equal to the width of the gas passage 102. In other words, one or more sets of airflow holes 113 are provided along the length of the first transverse passage 110, meaning one or more sets of airflow holes 113 can be provided between adjacent liquid passages 101.

[0066] like Figures 6 to 9 As shown, in another specific embodiment of the present invention, the liquid channel 101 is the inner cavity 121 of the heat exchange core 100, and the gas channel 102 is the gas guide pipe 120. The gas guide pipe 120 is placed in the inner cavity 121 and passes through the inner cavity 121. A first diversion hole 103 is opened at one end of the inner cavity 121, and a second diversion hole 104 is opened at the other end of the inner cavity 121.

[0067] Specifically, the air guide pipe 120 is parallel to the axis of the heat exchange core 100. The heat exchange liquid entering from the liquid inlet channel 200 enters the inner cavity 121 through the first diversion hole 103. The air guide pipe 120 in the inner cavity 121 is surrounded by the heat exchange liquid, allowing the heat exchange liquid to fully contact the air guide pipe 120 for heat exchange. After heat exchange, the heat exchange liquid flows out from the second diversion hole 104. It should be noted that the center line connecting the corresponding set of first diversion holes 103 and second diversion holes 104 is parallel to the air guide pipe 120, therefore the flow direction of the heat exchange liquid is the axial direction of the air guide pipe 120.

[0068] like Figure 9As shown in some embodiments of the present application, the heat exchange core 100 comprises an inner shell 133, an outer shell 131, an upper cover plate 130 and a lower cover plate 132. The outer shell 131 is sleeved outside the inner shell 133, the upper cover plate 130 and the lower cover plate 132 are connected to the upper and lower ends of the outer shell 131 and the inner shell 133, and the inner shell 133, the outer shell 131, the upper cover plate 130 and the lower cover plate 132 enclose an annular inner cavity 121, i.e. the liquid passage 101. The gas guide pipe 120 is arranged in the inner cavity 121, and the gas guide pipe 120 penetrates the upper cover plate 130 and the lower cover plate 132, and the gas guide pipe 120 is distributed at equal angles in the inner cavity 121.

[0069] As shown in some embodiments of the present application, the heat exchange core 100 comprises an inner shell 133, an outer shell 131, an upper cover plate 130 and a lower cover plate 132. The outer shell 131 is sleeved outside the inner shell 133, the upper cover plate 130 and the lower cover plate 132 are connected to the upper and lower ends of the outer shell 131 and the inner shell 133, and the inner shell 133, the outer shell 131, the upper cover plate 130 and the lower cover plate 132 enclose an annular inner cavity 121, i.e. the liquid passage 101. The gas guide pipe 120 is arranged in the inner cavity 121, and the gas guide pipe 120 penetrates the upper cover plate 130 and the lower cover plate 132, and the gas guide pipe 120 is distributed at equal angles in the inner cavity 121. Figure 10 As shown in some embodiments of the present application, the heat exchange core 100 comprises an inner shell 133, an outer shell 131, an upper cover plate 130 and a lower cover plate 132. The outer shell 131 is sleeved outside the inner shell 133, the upper cover plate 130 and the lower cover plate 132 are connected to the upper and lower ends of the outer shell 131 and the inner shell 133, and the inner shell 133, the outer shell 131, the upper cover plate 130 and the lower cover plate 132 enclose an annular inner cavity 121, i.e. the liquid passage 101. The gas guide pipe 120 is arranged in the inner cavity 121, and the gas guide pipe 120 penetrates the upper cover plate 130 and the lower cover plate 132, and the gas guide pipe 120 is distributed at equal angles in the inner cavity 121.

[0070] As shown in some embodiments of the present application, the heat exchange core 100 comprises an inner shell 133, an outer shell 131, an upper cover plate 130 and a lower cover plate 132. The outer shell 131 is sleeved outside the inner shell 133, the upper cover plate 130 and the lower cover plate 132 are connected to the upper and lower ends of the outer shell 131 and the inner shell 133, and the inner shell 133, the outer shell 131, the upper cover plate 130 and the lower cover plate 132 enclose an annular inner cavity 121, i.e. the liquid passage 101. The gas guide pipe 120 is arranged in the inner cavity 121, and the gas guide pipe 120 penetrates the upper cover plate 130 and the lower cover plate 132, and the gas guide pipe 120 is distributed at equal angles in the inner cavity 121.

[0071] As shown in some embodiments of the present application, the heat exchange core 100 comprises an inner shell 133, an outer shell 131, an upper cover plate 130 and a lower cover plate 132. The outer shell 131 is sleeved outside the inner shell 133, the upper cover plate 130 and the lower cover plate 132 are connected to the upper and lower ends of the outer shell 131 and the inner shell 133, and the inner shell 133, the outer shell 131, the upper cover plate 130 and the lower cover plate 132 enclose an annular inner cavity 121, i.e. the liquid passage 101. The gas guide pipe 120 is arranged in the inner cavity 121, and the gas guide pipe 120 penetrates the upper cover plate 130 and the lower cover plate 132, and the gas guide pipe 120 is distributed at equal angles in the inner cavity 121.

[0072] As shown in some embodiments of the present application, the heat exchange core 100 comprises an inner shell 133, an outer shell 131, an upper cover plate 130 and a lower cover plate 132. The outer shell 131 is sleeved outside the inner shell 133, the upper cover plate 130 and the lower cover plate 132 are connected to the upper and lower ends of the outer shell 131 and the inner shell 133, and the inner shell 133, the outer shell 131, the upper cover plate 130 and the lower cover plate 132 enclose an annular inner cavity 121, i.e. the liquid passage 101. The gas guide pipe 120 is arranged in the inner cavity 121, and the gas guide pipe 120 penetrates the upper cover plate 130 and the lower cover plate 132, and the gas guide pipe 120 is distributed at equal angles in the inner cavity 121.

[0073] One end of the first partition plate 122 is mounted on the outer shell 131, and the extended end of the first partition plate 122 is spaced from the inner shell 133; one end of the second partition plate 123 is mounted on the inner shell 133, and the extended end of the second partition plate 123 is spaced from the outer shell 131. The first partition plate 122 and the second partition plate 123 are arranged alternately, so as to realize the Z-shaped layout of the heat exchange liquid along the axis of the guide pipe. The heat exchange fluid is prevented from flowing only from the outer shell 131 side and less from the inner shell 133 side, so that the heat exchange between the heat exchange fluid and the heat exchange core 100 is more sufficient.

[0074] In addition, the first partition plate 122 and the second partition plate 123 penetrate the air guide pipe 120, and the air guide pipe 120 can be provided with inner and outer rings.

[0075] In addition, as shown in some optional embodiments of the present application, the inside of the air guide pipe 120 is provided with sawtooth-shaped fins. Figure 11

[0076] As shown in some optional embodiments of the present application, the inside of the air guide pipe 120 is provided with sawtooth-shaped fins. Figure 12 As shown in some optional embodiments of the present application, the inside of the air guide pipe 120 is provided with sawtooth-shaped fins.

[0077] In other words, the heat regenerator 300 is in communication with one end of the gas passage 102 where the liquid inlet passage 200 is located, and the gas alternately flows in the gas passage 102. The heat exchange liquid flows into the alternating flow heat exchanger from the end close to the heat regenerator 300, and flows out of the alternating flow heat exchanger from the end away from the heat regenerator 300.

[0078] For example, in a heat pump or a refrigerator that needs to consume acoustic power, or in an engine that generates acoustic power, the heat regenerator is provided with one alternating flow heat exchanger at each end, and the gas passage of the two alternating flow heat exchangers is in communication with the heat regenerator, and the liquid inlet passage of the two alternating flow heat exchangers is close to the heat regenerator.

[0079] As shown in some optional embodiments of the present application, the inside of the air guide pipe 120 is provided with sawtooth-shaped fins. Figure 12 As shown in some optional embodiments of the present application, the inside of the air guide pipe 120 is provided with sawtooth-shaped fins.

[0080] ​That is, the heat exchange fluid flows into the first and second alternating flow heat exchangers from the end close to the regenerator 300 and flows out of the first and second alternating flow heat exchangers from the end far from the regenerator 300.

[0081] The alternating flow heat exchanger provided by the present application reduces the unevenness of the circumferential temperature distribution in the alternating flow heat exchanger caused by the temperature rise of the heat exchange fluid, and improves the heat exchange performance of the alternating flow heat exchanger, by providing the gas passage and the liquid passage for heat exchange of the gas in the heat exchange core, and by providing the first and second flow dividing holes at the upper and lower ends of the heat exchange core.

[0082] Further, in the heat power conversion system provided by the present application, since the alternating flow heat exchanger is provided, the various advantages as described above are also provided.

[0083] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An alternating flow heat exchanger, characterized by, Comprise: Heat exchange core, including gas channel and liquid channel, the gas channel is through the heat exchange core along the axial direction of the heat exchange core, the heat exchange liquid in the liquid channel moves along the axial direction of the gas channel, the outer wall of the heat exchange core is provided with first shunt hole at one end, the outer wall of the heat exchange core is provided with second shunt hole at the other end, the first shunt hole and the second shunt hole are communicated with the liquid channel; Liquid inlet channel, communicated with the first shunt hole; Liquid outlet channel, communicated with the second shunt hole; The liquid channel includes first transverse channel, second transverse channel and through channel, the first transverse channel is communicated with the first shunt hole, the second transverse channel is communicated with the second shunt hole, the through channel is communicated with the first transverse channel and the second transverse channel, Wherein, the through channel is parallel to the axial direction of the gas channel; The heat exchange core is annular, the first shunt hole is equally angularly arranged at the upper end of the outer wall of the heat exchange core, the second shunt hole is equally angularly arranged at the lower end of the outer wall of the heat exchange core, Wherein, the gas channel is equally angularly arranged in the heat exchange core; The liquid inlet channel is provided with liquid inlet, the liquid outlet channel is provided with liquid outlet, a pair of liquid inlet and liquid outlet is diagonally arranged on the alternating flow heat exchanger.

2. The alternating flow heat exchanger of claim 1, wherein The gas channel and the liquid channel are alternately distributed, the gas channel includes sawtooth-shaped fins.

3. The alternating flow heat exchanger of claim 1, wherein The gas channel and the liquid channel are alternately distributed, the gas channel includes airflow hole.

4. The alternating flow heat exchanger of claim 1, wherein The axial length of the gas channel is less than the maximum stroke of the gas.

5. An alternating flow heat exchanger, characterized by Comprise: Heat exchange core, including gas channel and liquid channel, the gas channel is through the heat exchange core along the axial direction of the heat exchange core, the heat exchange liquid in the liquid channel moves along the axial direction of the gas channel, the outer wall of the heat exchange core is provided with first shunt hole at one end, the outer wall of the heat exchange core is provided with second shunt hole at the other end, the first shunt hole and the second shunt hole are communicated with the liquid channel; Liquid inlet channel, communicated with the first shunt hole; Liquid outlet channel, communicated with the second shunt hole; The liquid channel is the inner cavity of the heat exchange core, the gas channel is a gas guide pipe, the gas guide pipe is arranged in the inner cavity and penetrates the inner cavity, Wherein, the inner cavity is provided with the first shunt hole at one end, the inner cavity is provided with the second shunt hole at the other end, the gas guide pipe is parallel to the axis of the heat exchange core, the center line of the first shunt hole and the second shunt hole is parallel to the gas guide pipe; The heat exchange core is annular, the first shunt hole is equally angularly arranged at the upper end of the outer wall of the heat exchange core, the second shunt hole is equally angularly arranged at the lower end of the outer wall of the heat exchange core, Wherein, the gas channel is equally angularly arranged in the heat exchange core; The liquid inlet channel is provided with liquid inlet, the liquid outlet channel is provided with liquid outlet, a pair of liquid inlet and liquid outlet is diagonally arranged on the alternating flow heat exchanger.

6. The alternating flow heat exchanger of claim 5, wherein, The liquid channel includes first partition and second partition, the first partition and the second partition are alternately distributed along the axial direction of the gas guide pipe, The first partition plate is installed on one side of the inner cavity, the extended end of the first partition plate is spaced from the other side of the inner cavity, the second partition plate is installed on the side of the inner cavity opposite to the first partition plate, and the extended end of the second partition plate is spaced from the side of the inner cavity where the first partition plate is located.

7. A heat conversion system, characterized by, The application relates to an alternating flow heat exchanger comprising a regenerator and a heat exchanger according to claim 1 or 5. One end of the regenerator is communicated with one end of the gas passage, the liquid inlet passage is close to the regenerator, and the liquid outlet passage is far away from the regenerator.

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