Heat exchange core and heat exchanger

Abstract

The utility model relates to the technical field of heat exchange devices, in particular to a heat exchange core and a heat exchanger. The heat exchange core comprises a plurality of heat exchange units, and each heat exchange unit comprises a cold side inlet, a cold side outlet, a plurality of cold side flow channels and a plurality of hot side flow channels. The multiple cold side flow channels are stacked at intervals in the set direction, and the hot side flow channels are arranged between every two adjacent cold side flow channels. The cold side inlet and the cold side outlet are both communicated with the cold side runner; the multiple cold side inlets are arranged in parallel. When the heat exchanger using the heat exchange core body is applied to the SOFC system, normal operation of the SOFC system can be guaranteed, and the working efficiency of the SOFC system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchange device technical field especially is related to a heat exchange core and heat exchanger. BACKGROUND

[0002] Solid oxide fuel cell (Solid Oxide Fuel Cell, SOFC for short) belongs to the third generation fuel cell, is a kind of full solid chemical power generation device that is directly converted into electric energy with high efficiency and environmental friendliness stored in fuel and oxidant at medium-high temperature, is the highest theoretical energy density among several fuel cells.SOFC belongs to high-temperature fuel cell, generally works at 650 DEG C-1000 DEG C, fuel cell reactant is preheated when working, reduces the temperature difference between reactant and operating temperature, improves working efficiency, simultaneously, the tail gas temperature of fuel cell when running is extremely high and contains a large amount of heat energy, therefore, heat exchanger is generally used in SOFC system to recover the heat energy of flue gas and preheat reactant.

[0003] Currently, plate-fin heat exchanger structure is commonly used in SOFC system, and after the number of layers of the plate-fin heat exchanger is too much, the internal cold side fluid flow field is not uniform. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of heat exchange core and heat exchanger to solve the technical problems that the internal cold side fluid flow field is not uniform after the number of layers of plate-fin heat exchanger is too much in prior art to some extent.

[0005] The utility model provides a kind of heat exchange core, comprising: multiple heat exchange units, each heat exchange unit includes cold side import, cold side export, multiple cold side flow passages and multiple hot side flow passages;Multiple cold side flow passages are arranged along the direction of interval stacking, and hot side flow passage is arranged between multiple groups of adjacent two cold side flow passages;Cold side import and cold side export are communicated with cold side flow passage;Multiple cold side imports are connected in parallel.

[0006] External cooling fluid can enter the cold side flow passage in multiple heat exchange units through multiple cold side imports respectively, and the hot side flow passage in multiple heat exchange units simultaneously flows hot side fluid, each heat exchange unit exchanges heat respectively, multiple heat exchange units are connected in parallel, so that the flow field of cold side fluid can be uniform;In addition, multiple heat exchange units are connected in parallel, so that the production difficulty and high production cost caused by the conventional heat exchange core with the same number of cold side flow passages can be avoided.When the heat exchanger using the heat exchange core provided by the utility model is applied in SOFC system, the normal working operation of SOFC system can be guaranteed, and the working efficiency of SOFC system is improved.

[0007] Further, the heat exchange core comprises at least one heat exchange group formed by two of the heat exchange units, the first heat exchange unit and the second heat exchange unit in the heat exchange group are arranged in the stacking direction of the plurality of cold side flow channels; the first cold side inlet of the first heat exchange unit and the second cold side inlet of the second heat exchange unit are oppositely arranged.

[0008] Further, the first cold side outlet of the first heat exchange unit and the second cold side outlet of the second heat exchange unit are oppositely arranged.

[0009] Further, the heat exchange core further comprises a distribution pipe, the first heat exchange unit and the second heat exchange unit are respectively located on two sides of the distribution pipe, and the distribution pipe is provided with an inlet; in the stacking direction of the plurality of cold side flow channels, one end of the distribution pipe is in communication with the first cold side inlet, and the other end is in communication with the second cold side inlet.

[0010] Further, the heat exchange core further comprises a collection pipe, the first heat exchange unit and the second heat exchange unit are respectively located on two sides of the collection pipe, and the collection pipe is provided with an outlet; one end of the collection pipe is in communication with the first cold side outlet, and the other end is in communication with the second cold side outlet.

[0011] Further, in the direction perpendicular to the stacking of the plurality of cold side flow channels, the plurality of heat exchange groups are sequentially and spacedly arranged.

[0012] Further, in the direction perpendicular to the stacking of the plurality of cold side flow channels, the plurality of heat exchange units are sequentially arranged, and the plurality of cold side inlets are located on the same side.

[0013] Further, the heat exchange core further comprises a top plate and a bottom plate; in the stacking direction of the plurality of cold side flow channels, the top plate and the bottom plate are respectively connected on two sides of the plurality of heat exchange units, the top plate is provided with a plurality of inlet communication openings corresponding to the plurality of cold side inlets and a plurality of outlet communication openings corresponding to the plurality of cold side outlets.

[0014] Further, the heat exchange core further comprises a side plate and a baffle; in the width direction of the heat exchange unit, the side plate is arranged on the side of the heat exchange core, and the side plate is connected and fixed between the top plate and the bottom plate; the baffle is arranged between the two adjacent heat exchange units.

[0015] Further, the heat exchange core further comprises a partition plate, the partition plate is arranged between the top plate and the bottom plate; the top plate and the bottom plate are provided with a plurality of heat exchange units, the bottom plate and the partition plate are also provided with a plurality of heat exchange units; the bottom plate is provided with the inlet communication opening and the outlet communication opening.

[0016] The utility model provides a heat exchanger, including casing and above -mentioned heat exchange core body, be equipped with cold side fluid total import, cold side fluid total export, hot side fluid total import and hot side fluid total export on the casing, the heat exchange core body is arranged in the casing, the cold side fluid total import with a plurality of the cold side import intercommunication, the cold side fluid total export with a plurality of the cold side export intercommunication, the hot side fluid total import with the hot side fluid total export all with the hot side flow passage intercommunication.

[0017] It is to be understood that both the foregoing general description and the following detailed description are intended to be illustrative and are not necessarily limiting on the disclosure. The accompanying drawings are included to provide a further understanding of the subject matter of the disclosure, and are incorporated in and constitute a part of this specification. The BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in prior art, the drawings needed to be used in the specific embodiments or prior art description will be briefly introduced as follows, obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor according to these drawings.

[0019] Figure 1 It is the structure schematic diagram of heat exchange core body of an embodiment of the utility model;

[0020] Figure 2 It is the structure schematic diagram of heat exchange core body of an embodiment of the utility model; Figure 1 It is the exploded view of heat exchange core body;

[0021] Figure 3 It is the structure schematic diagram of another heat exchange core body of the embodiment of the utility model;

[0022] Figure 4 It is the structure schematic diagram of another heat exchange core body of the embodiment of the utility model; Figure 2 It is the front view of heat exchange core body.

[0023] Figure: 1-heat exchange unit;2-cold side import;3-cold side export;4-shunt pipe;5-collector pipe;6-bottom plate;7-top plate;8-side plate;9-baffle;101-first heat exchange unit;102-second heat exchange unit;201-first cold side import;301-first cold side export. DETAILED DESCRIPTION

[0024] The technical scheme of the utility model will be described clearly and completely in conjunction with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments.

[0025] The components of the embodiments of the present application generally described and illustrated in the drawings herein can be arranged and designed in a wide variety of different configurations. Therefore, the following detailed description of the embodiments of the present application, as provided in the drawings, is not intended to limit the scope of the application, but is merely representative of selected embodiments of the application.

[0026] Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0027] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying 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 limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be broadly understood, 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, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the component must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0030] It should be noted that the heat exchanger provided by the present application can be but is not limited to the SOFC system.

[0031] For example, Figures 1 to 4As shown, the utility model embodiment provides a kind of heat exchange core, comprising: multiple heat exchange units 1, each heat exchange unit 1 includes cold side import 2, cold side export 3, multiple cold side flow channels and multiple hot side flow channels;Multiple cold side flow channels are arranged in the direction of setting interval stack (it refers to in the height direction of heat exchange unit 1, cold side flow channel is arranged layer by layer, and interval is provided between adjacent two sides of cold side flow channel), and hot side flow channel is provided between multiple groups of adjacent two cold side flow channels (it refers to, there is hot side flow channel between adjacent two cold side flow channels;Wherein, it can be that one hot side flow channel is arranged between every adjacent two cold side flow channels in part multiple cold side flow channels, and no hot side flow channel is arranged between adjacent two cold side flow channels in remaining part cold side flow channel, preferably, one hot side flow channel is arranged between every adjacent two cold side flow channels);Cold side import 2 and cold side export 3 are communicated with cold side flow channel;Multiple cold side imports 2 are connected in parallel, specifically, external cold side fluid supply pipeline is communicated with multiple cold side imports 2 respectively, and cold side fluid is shunted into multiple cold side imports 2.

[0032] In the embodiment, the external cooling fluid can enter the cold side flow channels in the multiple heat exchange units 1 through the multiple cold side imports 2 respectively, and the hot side flow channels in the multiple heat exchange units 1 simultaneously flow the hot side fluid; each heat exchange unit 1 exchanges heat independently, and the multiple heat exchange units 1 are connected in parallel, so that the flow field of the cold side fluid is uniform; in addition, by connecting the multiple heat exchange units 1 in parallel, the production difficulty and high production cost caused by the excessively high conventional heat exchange core with the same number of cold side flow channels can be avoided. When the heat exchanger using the heat exchange core provided by the embodiment is applied in the SOFC system, the normal operation of the SOFC system can be ensured, and the working efficiency of the SOFC system is improved.

[0033] As an optional solution, as shown in Figure 1 and Figure 2 As shown, the heat exchange core includes at least one heat exchange group formed by two heat exchange units 1 (preferably, in the multiple heat exchange units 1, adjacent two heat exchange units 1 form a heat exchange group, and the heat exchange core is composed of multiple heat exchange groups), and the first heat exchange unit 101 and the second heat exchange unit 102 in the heat exchange group (that is, one of the two heat exchange units 1 in the heat exchange group is the first heat exchange unit 101, and the other is the second heat exchange unit 102) are arranged in the stacking direction of the multiple cold side flow channels. The first cold side import 201 of the first heat exchange unit 101 and the second cold side import 2 of the second heat exchange unit 102 are oppositely arranged, and the first cold side export 301 of the first heat exchange unit 101 and the second cold side export 3 of the second heat exchange unit 102 are oppositely arranged, that is, the first cold side import 201, the second cold side import 2, the first cold side export 301 and the second cold side export 3 are located in the middle part of the heat exchange core.

[0034] In the embodiment, in the stacking direction of the plurality of cold-side flow channels, which can also be understood as the height direction of the heat exchange core, the first heat exchange unit 101 is located on the left side, the second heat exchange unit 102 is located on the right side, the first cold-side inlet 201 is located on the side of the first heat exchange unit 101 close to the second heat exchange unit 102, and the second cold-side inlet 2 is located on the side of the second heat exchange unit 102 close to the first heat exchange unit 101. The cooling fluid is divided into the first heat exchange unit 101 and the second heat exchange unit 102 from the left and right through the first cold-side inlet 201 and the second cold-side inlet 2.

[0035] The first cold-side outlet 301 of the first heat exchange unit 101 can be arranged on the side of the first heat exchange unit 101 away from the second heat exchange unit 102, and the second cold-side inlet 2 of the second heat exchange unit 102 can be arranged on the side of the second heat exchange unit 102 away from the first heat exchange unit 101; or the first cold-side outlet 301 can be arranged on the side of the first heat exchange unit 101 away from the second heat exchange unit 102, and the second cold-side inlet 2 can be arranged on the side of the second heat exchange unit 102 close to the first heat exchange unit 101; or the first cold-side outlet 301 can be arranged on the side of the first heat exchange unit 101 close to the second heat exchange unit 102, and the second cold-side inlet 2 can be arranged on the side of the second heat exchange unit 102 away from the first heat exchange unit 101.

[0036] As an optional solution, the first cold-side outlet 301 of the first heat exchange unit 101 and the second cold-side outlet 3 of the second heat exchange unit 102 are arranged oppositely, that is, the first cold-side outlet 301 is arranged on the side of the first heat exchange unit 101 close to the second heat exchange unit 102, and the second cold-side outlet 3 is arranged on the side of the second heat exchange unit 102 close to the first heat exchange unit 101. This structure makes the structure of the heat exchange core regular and compact.

[0037] The first cold-side inlet 201 and the second cold-side inlet 2 can be respectively communicated with the external cold-side fluid supply pipeline through the communication pipeline.

[0038] As an optional solution, as shown in Figure 1 and Figure 2 The heat exchange core further comprises a shunt pipe 4, the first heat exchange unit 101 and the second heat exchange unit 102 are respectively located on the two sides of the shunt pipe 4, and the shunt pipe 4 is provided with an inlet; in the stacking direction of the plurality of cold-side flow channels, one end of the shunt pipe 4 is communicated with the first cold-side inlet 201, and the other end is communicated with the second cold-side inlet 2.

[0039] In the embodiment, the inlet on the shunt pipe 4 can be in communication with an external cold side fluid supply pipe. After the cooling fluid enters the shunt pipe 4, the cooling fluid is shunted to the first heat exchange unit 101 and the second heat exchange unit 102. The shunt pipe 4 can simplify the pipeline structure in the heat exchanger and make the structure of the heat exchange core compact.

[0040] As shown in Figure 1 and Figure 2 , on the basis of the above embodiment, further, the heat exchange core further comprises a collecting pipe 5, the first heat exchange unit 101 and the second heat exchange unit 102 are respectively located on both sides of the collecting pipe 5, and the collecting pipe 5 is provided with an outlet; one end of the collecting pipe 5 is in communication with the first cold side outlet 301, and the other end of the collecting pipe 5 is in communication with the second cold side outlet 3.

[0041] In the embodiment, the cold side fluid in the first heat exchange unit 101 and the cold side fluid in the second heat exchange unit 102 are collected in the collecting pipe 5 and then discharged from the outlet of the heat exchanger, which further simplifies the pipeline structure in the heat exchanger and makes the structure of the heat exchange core further compact.

[0042] On the basis of the above embodiment, further, in a direction perpendicular to the stacking direction of the plurality of cold side flow channels, the plurality of heat exchange groups are sequentially and spaced apart.

[0043] When the shunt pipe 4 and the collecting pipe 5 are provided, the number of the shunt pipes 4 and the number of the collecting pipes 5 can be multiple, and the plurality of shunt pipes 4 and the plurality of collecting pipes 5 are respectively arranged one-to-one with the plurality of heat exchange units 1. The plurality of shunt pipes 4 can be in communication with each other through intermediate pipes, and the plurality of collecting pipes 5 can be in communication with each other through intermediate pipes.

[0044] As another optional solution, as shown in Figure 3 and Figure 4 , along the direction perpendicular to the stacking direction of the plurality of cold side flow channels, the plurality of heat exchange units 1 are sequentially arranged, and the plurality of cold side inlets 2 are located on the same side, that is, the plurality of heat exchange units 1 are arranged side by side.

[0045] As shown in Figure 3 and Figure 4 , on the basis of the above embodiment, further, the heat exchange core further comprises a top plate 7 and a bottom plate 6; in the stacking direction of the plurality of cold side flow channels, the top plate 7 and the bottom plate 6 are respectively connected on both sides of the plurality of heat exchange units 1, the top plate 7 is provided with a plurality of inlet communication openings corresponding to the plurality of cold side inlets 2, a plurality of outlet communication openings corresponding to the plurality of cold side outlets 3, and a plurality of outlet communication openings corresponding to the plurality of cold side outlets 3.

[0046] In the embodiment, the bottom of the plurality of heat exchange units 1 is connected with the bottom plate 6, and the top of the plurality of heat exchange units 1 is connected with the top plate 7, so that the plurality of heat exchange units 1 are connected into a whole by the bottom plate 6 and the top plate 7.

[0047] As Figure 3 shown, on the basis of the above embodiment, further, the heat exchange core further comprises side plates 8 and baffles; in the width direction of the heat exchange unit 1, the side of the heat exchange core is provided with the side plate 8, and the side plate 8 is connected and fixed between the top plate 7 and the bottom plate 6; baffles are arranged between adjacent two heat exchange units 1.

[0048] In the embodiment, the side plates 8 are arranged on both sides in the width direction of the heat exchange core (i.e. in the width direction of the heat exchange unit 1), and the hot side fluid can enter or flow out of the heat exchange core in the length direction of the heat exchange unit 1, and the side plates 8 block the corresponding two sides of the heat exchange core, so as to avoid the leakage of the hot side fluid from the corresponding two sides and affect the heat exchange. The baffles arranged between the heat exchange unit 1 and the heat exchange unit 1 can avoid the bypass of the hot side fluid and avoid affecting the heat exchange of each heat exchange unit 1.

[0049] As Figure 3 shown, on the basis of the above embodiment, further, the heat exchange core further comprises a partition plate 9, the partition plate 9 is arranged between the top plate 7 and the bottom plate 6; a plurality of heat exchange units 1 are arranged on the top plate 7 and the bottom plate 6, and a plurality of heat exchange units 1 are also arranged between the bottom plate 6 and the partition plate 9; the inlet communication port and the outlet communication port are arranged on the bottom plate 6. That is, in the stacking direction of the heat exchange unit 1, i.e. in the height direction of the heat exchange core, the heat exchange core comprises two side heat exchange units 1, and each layer has a plurality of heat exchange units 1.

[0050] The utility model also provides a heat exchanger, including casing and the heat exchange core of any prior art of above-mentioned, the casing is equipped with cold side fluid total import, cold side fluid total export, hot side fluid total import and hot side fluid total export, the heat exchange core sets up in the casing, cold side fluid total import and a plurality of cold side import 2 intercommunication, cold side fluid total export and a plurality of cold side export 3 intercommunication, hot side fluid total import and hot side fluid total export all with hot side fluid passage intercommunication. The heat exchanger provided by the embodiment comprises the heat exchange core of any prior art of above-mentioned, so as to comprise all the beneficial effects of the heat exchange core, which will not be repeated here.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced equivalently. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application. In the specification provided herein, a large number of specific details are described. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not described in detail in order not to obscure the understanding of the present specification. In addition, those skilled in the art can understand that although some embodiments described herein include some features included in other embodiments but not others, the combination of features of different embodiments means to be within the scope of the present application and forms different embodiments.

Claims

1. A heat exchange core, characterized by, include: Multiple heat exchange units (1), each heat exchange unit (1) includes a cold side inlet (2), a cold side outlet (3), multiple cold side flow channels and multiple hot side flow channels; Multiple cold-side channels are stacked at intervals along a set direction, and multiple sets of adjacent cold-side channels are provided with hot-side channels; the cold-side inlet (2) and the cold-side outlet (3) are both connected to the cold-side channels; multiple cold-side inlets (2) are arranged in parallel.

2. The heat exchange core of claim 1, wherein It includes at least one heat exchange group formed by two heat exchange units (1), wherein the first heat exchange unit (101) and the second heat exchange unit (102) in the heat exchange group are spaced apart in the stacking direction of the plurality of cold side channels; the first cold side inlet (201) of the first heat exchange unit (101) and the second cold side inlet (2) of the second heat exchange unit (102) are arranged opposite to each other.

3. The heat exchange core of claim 2, wherein, The first cold-side outlet (301) of the first heat exchange unit (101) and the second cold-side outlet (3) of the second heat exchange unit (102) are arranged opposite to each other.

4. The heat exchange core of claim 3, wherein The heat exchange core also includes a diversion pipe (4), with the first heat exchange unit (101) and the second heat exchange unit (102) located on both sides of the diversion pipe (4), and the diversion pipe (4) is provided with an inlet; along the stacking direction of the plurality of cold side channels, one end of the diversion pipe (4) is connected to the first cold side inlet (201), and the other end is connected to the second cold side inlet (2); the heat exchange core also includes a manifold (5), with the first heat exchange unit (101) and the second heat exchange unit (102) located on both sides of the manifold (5), and the manifold (5) is provided with an outlet; one end of the manifold (5) is connected to the first cold side outlet (301), and the other end is connected to the second cold side outlet (3).

5. The heat exchange core according to claim 3 or 4, characterized in that In a direction perpendicular to the stack of multiple cold-side flow channels, multiple heat exchange groups are arranged sequentially at intervals.

6. The heat exchange core of claim 1, wherein, Along a direction perpendicular to the stacking of the multiple cold-side flow channels, the multiple heat exchange units (1) are arranged in sequence, and the multiple cold-side inlets (2) are located on the same side.

7. The heat exchange core of claim 6, wherein, The heat exchange core also includes a top plate (7) and a bottom plate (6); in the stacking direction of the multiple cold-side flow channels, the top plate (7) and the bottom plate (6) are respectively connected to both sides of the multiple heat exchange units (1), and the top plate (7) is provided with multiple inlet ports corresponding to the multiple cold-side inlets (2) and outlet ports corresponding to the multiple cold-side outlets (3).

8. The heat exchange core of claim 7, wherein, The heat exchange core also includes a side plate (8) and a baffle; in the width direction of the heat exchange unit (1), the side plate (8) is provided on the side of the heat exchange core, and the side plate (8) is connected and fixed between the top plate (7) and the bottom plate (6); the baffle is provided between two adjacent heat exchange units (1).

9. The heat exchange core of claim 7, wherein, The heat exchange core further comprises a partition plate (9) arranged between the top plate (7) and the bottom plate (6); a plurality of the heat exchange units (1) are arranged on the top plate (7) and the bottom plate (6), and a plurality of the heat exchange units (1) are also arranged between the bottom plate (6) and the partition plate (9); the bottom plate (6) is provided with the inlet communication port and the outlet communication port.

10. A heat exchanger, characterized by The heat exchange core comprises a shell and the heat exchange core as claimed in any one of claims 1-9; the shell is provided with a cold side fluid total inlet, a cold side fluid total outlet, a hot side fluid total inlet and a hot side fluid total outlet; the heat exchange core is arranged in the shell, the cold side fluid total inlet is communicated with a plurality of the cold side inlets (2), and the cold side fluid total outlet is communicated with a plurality of the cold side outlets (3); the hot side fluid total inlet and the hot side fluid total outlet are both communicated with the hot side flow channel.

Images