Phase change cold storage plate heat exchanger

Abstract

The invention discloses a phase change cold storage plate heat exchanger, and relates to the technical field of phase change energy storage, the phase change cold storage plate heat exchanger comprises a core body, a plurality of energy storage channels and fluid channels are alternately arranged in the core body, and a partition plate I is arranged between the adjacent energy storage channel and fluid channel; the first heat exchange piece is arranged in the energy storage channel, the two ends of the first heat exchange piece are each connected with a first partition plate, the first heat exchange piece divides the energy storage channel into a first material storage chamber and a second material storage chamber, and the first material storage chamber and the second material storage chamber are both filled with phase change materials. And the multiple second heat exchange pieces are arranged in the energy storage channel, and the two ends, in the first direction, of each second heat exchange piece are each connected with one first partition plate. According to the phase change cold storage plate heat exchanger, the energy storage channels and the fluid channels are alternately arranged in the core body, so that the heat exchange area of the phase change material and the heat exchange medium is increased, the phase change material can efficiently exchange heat with the heat exchange medium, the thermal response speed is increased, and the energy utilization rate is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of phase change energy storage, and particularly to a phase change cold storage plate heat exchanger. Background Art

[0002] Phase change energy storage technology is a technology that realizes energy storage by absorbing or releasing latent heat during the phase change process of a substance. It has advantages such as high heat storage density and constant temperature control, and is widely used in industrial energy conservation, renewable energy utilization and other fields. Phase change energy storage technology effectively alleviates the mismatch problem of energy supply and demand in terms of time, space and intensity through the endothermic and exothermic characteristics during the phase change process of materials, and is a key means to improve energy utilization efficiency. Among them, phase change energy storage heat exchangers play an important role in building energy conservation, thermal management of electronic devices and solar energy utilization due to their large heat transfer area, excellent thermal conductivity, flexible assembly and easy maintenance.

[0003] However, the existing heat exchangers have the following significant limitations in practical applications: the proportion of phase change materials in the existing heat exchangers is relatively low, and large-scale energy storage and exchange cannot be achieved in a short time, resulting in low heat transfer efficiency between the phase change materials and the heat transfer medium, and obvious temperature gradients appear during the heat transfer process. Moreover, the overall weight is relatively large and the structural stability is poor, making it difficult to be applied to application scenarios such as cold chain logistics and cold quantity transportation that require short-distance transportation. Therefore, a phase change cold storage plate heat exchanger for solving the above problems is proposed. Summary of the Invention

[0004] The purpose of the present invention is to provide a phase change cold storage plate heat exchanger, which solves the technical problems that the existing heat exchangers cannot achieve large-scale energy storage and exchange in a short time, resulting in low heat response speed and energy utilization rate.

[0005] To achieve the above purpose, the present invention provides a phase change cold storage plate heat exchanger, including:

[0006] A core body, in which a number of energy storage channels and fluid channels are arranged alternately along a first direction. The fluid channels are used to pass through a heat transfer medium, and a first partition is provided between adjacent energy storage channels and fluid channels;

[0007] A first heat exchange fin, disposed in the energy storage channel. The two ends of the first heat exchange fin in the first direction are respectively connected to a first partition. The first heat exchange fin divides the energy storage channel into a first storage chamber and a second storage chamber, and phase change materials are filled in both the first storage chamber and the second storage chamber;

[0008] A number of second heat exchange fins are provided, and the number of second heat exchange fins are arranged in the energy storage channel. The two ends of each second heat exchange fin in the first direction are respectively connected to a first partition.

[0009] Preferably, a baffle strip is arranged in the fluid channel. Both ends of the baffle strip in the first direction are respectively connected to a first partition. The baffle strip divides the fluid channel into a fluid input part and a fluid output part for passing the heat exchange medium. The length direction of the fluid input part is the second direction, and the first direction is perpendicular to the second direction.

[0010] Preferably, a head is arranged at one end of the core body. The interior of the head is divided by a second partition into an input chamber communicating with the fluid input part and an output chamber communicating with the fluid output part.

[0011] Preferably, a fluid input pipe and a fluid output pipe are respectively arranged at both ends of the head in the third direction. The fluid input pipe and the fluid output pipe are respectively connected to external connecting pipes through flanges. The third direction is perpendicular to any one of the first direction and the second direction.

[0012] Preferably, a number of first guide vanes are arranged at the first end of the fluid channel. A number of first guide vanes are combined to form a straight channel, and the straight channel is consistent with the length direction of the fluid channel. A guide structure is arranged at the second end of the fluid channel. A number of second guide vanes are arranged in the guide structure, and a number of second guide vanes are combined to form a number of U-shaped channels.

[0013] Preferably, a number of third heat exchange fins are arranged in the fluid channel. Both ends of each third heat exchange fin in the first direction are respectively connected to a first partition.

[0014] Preferably, a top cover is arranged at the top of the core body, and a buffer space is reserved at the top position of the energy storage channel.

[0015] Preferably, a number of seals are arranged on the circumferential side surface of the energy storage channel. A number of seals and two first partitions are combined to form the energy storage channel, and a number of first through holes are arranged in an array on the seal on one side of the energy storage channel. The axial direction of the first through holes is the third direction.

[0016] Preferably, a number of second through holes communicating the first storage chamber and the second storage chamber are arranged in an array on the top surface of the first heat exchange fin.

[0017] Preferably, the material of the first partition is aluminum foil material, and the first partition is processed into an embossed shape design through a mold.

[0018] Compared with the above background art, a phase change cold storage plate heat exchanger provided by the present invention has the following beneficial effects:

[0019] 1. The present invention replaces the traditional large-sized fin structure with heat exchange fins I, significantly reducing the overall weight of the heat exchanger while ensuring the loading of a large amount of phase change material, thus achieving a lightweight structural design. Moreover, by arranging a plurality of heat exchange fins II in an array in the energy storage channel to replace the traditional way of arranging dense fins inside the core, not only can the weight of the heat exchanger be effectively reduced, but also the heat exchange area can be increased, the proportion of the phase change material in the whole product can be increased, and the cold storage and cold release capabilities of the product can be improved. In addition, the heat exchange fins I and the heat exchange fins II can exert a certain pulling or supporting effect on the partition I on both sides of the energy storage channel, improving the overall anti-deformation strength of the energy storage channel and the core, and further improving the stability of the internal phase change material.

[0020] 2. The present invention fills phase change materials in the storage chamber I and the storage chamber II in the energy storage channel respectively, and at the same time arranges a plurality of energy storage channels and fluid channels alternately in the core, increasing the heat exchange area between the phase change material and the heat exchange medium, thereby improving the heat exchange efficiency between the phase change material and the heat exchange medium, enabling the phase change material to exchange heat with the heat exchange medium efficiently, greatly enhancing the cold storage and cold release rates, realizing large-scale energy storage and exchange in a short time, and further enhancing the thermal response speed and energy utilization rate of the overall heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0022] Figure 1 It is a plan view of the heat exchanger provided by the embodiment of the present invention;

[0023] Figure 2 It is a plan view of the core provided by the embodiment of the present invention;

[0024] Figure 3 It is a sectional view of the core and the head after assembly provided by the embodiment of the present invention;

[0025] Figure 4 It is a sectional view of the energy storage channel provided by the embodiment of the present invention;

[0026] Figure 5 It is a sectional view of the seal provided by the embodiment of the present invention;

[0027] Figure 6 It is a front view of the top cover provided by the embodiment of the present invention;

[0028] Figure 7The top view of the top cover provided by the embodiment of the present invention.

[0029] Specifically, 1 - core body; 110 - top cover; 1101 - plate body; 1102 - L-shaped aluminum plate; 2 - fluid channel; 201 - baffle strip; 202 - fluid input part; 203 - fluid output part; 204 - first guide vane; 205 - second guide vane; 206 - third heat exchange fin; 3 - energy storage channel; 301 - buffer space; 302 - first heat exchange fin; 303 - first partition; 304 - first storage chamber; 305 - second storage chamber; 306 - second heat exchange fin; 4 - seal; 401 - first through hole; 5 - head; 501 - second partition; 502 - input chamber; 503 - output chamber; 504 - fluid input pipe; 505 - fluid output pipe. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] In order to enable those skilled in the art in this technical field to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0032] Figure 1 The plan view of the heat exchanger provided by the embodiment of the present invention, Figure 2 The assembly diagram of the core body provided by the embodiment of the present invention, Figure 3 The cross-sectional view after the fluid channel and the head are assembled provided by the embodiment of the present invention, Figure 4 The cross-sectional view of the energy storage channel provided by the embodiment of the present invention.

[0033] Referring to Figures 1-4 , the present invention provides a phase change cold storage plate heat exchanger, including: a core body 1, in which a plurality of energy storage channels 3 and fluid channels 2 are alternately arranged along a first direction, where the first direction is Figure 2 the X direction shown in

[0034] Among them, a first heat exchange fin 302 is arranged in the energy storage channel 3. Both end portions of the first heat exchange fin 302 in the first direction are respectively connected to a first partition plate 303. The first heat exchange fin 302 divides the energy storage channel 3 into a first storage chamber 304 and a second storage chamber 305. Phase change materials are filled in both the first storage chamber 304 and the second storage chamber 305. On the one hand, by filling phase change materials in the first storage chamber 304 and the second storage chamber 305 and using the first heat exchange fin 302 to replace the traditional large-size fin structure, on the premise of ensuring the loading of a large amount of phase change materials, the overall weight of the heat exchanger is significantly reduced, realizing a lightweight structural design. At the same time, the heat exchange area between the heat exchange medium and the phase change materials is indirectly increased through the first heat exchange fin 302, enhancing the heat exchange effect between the phase change materials and the heat exchange medium. Further, the first heat exchange fin 302 and the second heat exchange fin 306 can exert a certain pulling or supporting effect on the first partition plates 303 on both sides of the energy storage channel 3, so as to improve the overall anti-deformation strength of the energy storage channel 3 and the core body 1, and further improve the stability of the heat exchanger, enabling the overall heat exchanger to always maintain a certain shape under the action of external forces, and the overall heat exchanger to always maintain a stable state during the transportation process, making it more suitable for application scenarios such as cold chain logistics and cold quantity transportation that require short-distance transportation.

[0035] It should be noted that a plurality of energy storage channels 3 and fluid channels 2 are alternately arranged in the core body 1. Two fluid channels 2 are arranged on both sides of each energy storage channel 3, which can effectively increase the heat exchange area between the phase change materials and the heat exchange medium, effectively improve the heat exchange efficiency between the phase change materials and the heat exchange medium, and can meet the requirements of modern energy systems for rapid and precise temperature control.

[0036] A plurality of second heat exchange fins 306 are arranged in the energy storage channel 3. The second heat exchange fins 306 are of small size as a whole and are arranged in the energy storage channel 3 in an array manner, replacing the traditional way of arranging dense fins inside the core body 1. On the one hand, it can effectively reduce the weight of the heat exchanger, and on the other hand, it can increase the heat exchange area, increase the proportion of the phase change materials in the whole product, and improve the cold storage and cold release capabilities of the product.

[0037] During use, when cold needs to be stored, control the heat exchange medium to fully exchange heat with the phase change materials during the process of passing through the fluid channel 2, and transfer the cold quantity of the heat exchange medium to the phase change materials. The phase change materials store cold quantity during the phase change process. When cold needs to be released, control the heat exchange medium to fully exchange heat with the phase change materials during the process of passing through the fluid channel 2, transfer the cold quantity in the phase change materials to the heat exchange medium, and the phase change materials release cold quantity during the phase change process and transfer it to the environment that needs cold quantity through the heat exchange medium. By alternately arranging a plurality of energy storage channels 3 and fluid channels 2 in the core body 1, the phase change materials and the heat exchange medium exchange heat efficiently, greatly improving the cold storage and cold release rates, realizing large-scale energy storage and exchange in a short time, and effectively improving the heat response speed and energy utilization rate of the overall heat exchanger.

[0038] In some embodiments of the present invention, a baffle strip 201 is provided in the fluid channel 2, and the two ends of the baffle strip 201 in the first direction are respectively connected to a partition 303. The baffle strip 201 separates the fluid channel 2 into a fluid input part 202 and a fluid output part 203 for passing a heat exchange medium, wherein the length direction of the fluid input part 202 is the second direction, and the first direction and the second direction are perpendicular. It should be noted that the heat exchange medium can be either liquid or gas. The heat exchange medium is transported into the fluid input part 202 and discharged from the fluid output part 203. In the process of the heat exchange medium passing through the fluid channel 2, it contacts the partition 303 and fully exchanges heat, and the cold of the heat exchange medium is transferred to the phase change material to achieve the purpose of cold storage.

[0039] It should be noted that the baffle strip 201 can exert a certain pulling or supporting effect on the partition 303 on both sides of the fluid channel 2, so as to improve the overall deformation resistance of the fluid channel 2 and the core 1, improve the stability of the heat exchanger, and further enable the heat exchanger as a whole to always maintain a certain shape under the action of external force.

[0040] In some embodiments of the present invention, a head 5 is provided at the right end of the core 1, and the interior of the head 5 is divided by a partition 2 501 to form an input chamber 502 connecting the fluid input part 202 in each fluid channel 2 and an output chamber 503 connecting the fluid output part 203. Furthermore, a fluid input pipe 504 and a fluid output pipe 505 are respectively provided at both ends of the head 5 in a third direction, wherein the third direction is perpendicular to any one of the first direction and the second direction, and a heat exchange medium is transported into the input chamber 502 through the fluid input pipe 504, the heat exchange medium enters the fluid input part 202 from the input chamber 502 and is transported to the output chamber 503 through the fluid output part 203, and finally is transported to the fluid output pipe 505 through the output chamber 503, so as to ensure that the heat exchange medium passes smoothly through the fluid channel 2 and completes a single circulation of the heat exchange medium.

[0041] Optionally, the fluid input pipe 504 and the fluid output pipe 505 are respectively connected to external pipes via flanges to ensure that the external pipes can be flexibly disassembled and installed during the cold storage and cooling process of the heat exchanger, which facilitates the transportation of the heat exchanger and the switching between the cold storage and cooling working modes, making it more convenient to use.

[0042] In some embodiments of the present invention, a plurality of groups of first guide vanes 204 are provided at the right end of the fluid channel 2. The length direction of the first guide vanes 204 is consistent with the length direction of the fluid channel 2 to ensure that a plurality of first guide vanes 204 are combined to form a straight channel. Among them, the straight channel is consistent with the length direction of the fluid channel 2 to ensure that the heat exchange medium smoothly and evenly enters or exits the fluid channel 2. Further, a guiding structure is provided at the left end of the fluid channel 2, and a plurality of groups of second guide vanes 205 are arranged in the guiding structure. A plurality of U-shaped channels are formed by combining the plurality of groups of second guide vanes 205. Among them, the lower part of the U-shaped channel communicates with the fluid input part 202, and the upper part of the U-shaped channel communicates with the fluid output part 203. The left side part of the U-shaped channel is perpendicular to the second direction. Furthermore, through the synergistic effect of the first guide vanes 204, the second guide vanes 205 and the baffle strip 201, the fluid channel 2 provides a U-shaped circulating flow space for the heat exchange medium, ensuring that the heat exchange medium realizes efficient one-way flow in the fluid channel 2 and U-shaped flow in the fluid channel 2, reducing the flow resistance of the heat exchange medium in the fluid channel 2, thereby improving the heat exchange efficiency between the phase change material and the heat exchange medium, enabling the heat exchange medium in the fluid channel 2 to fully exchange heat with the phase change material, and further improving the heat exchange efficiency between the heat exchange medium and the phase change material.

[0043] In some embodiments of the present invention, a plurality of third heat exchange fins 206 are arranged in the fluid channel 2. Both ends of each third heat exchange fin 206 in the first direction are respectively connected to a first partition 303. On the one hand, through the third heat exchange fins 206, the heat exchange area between the heat exchange medium and the phase change material is indirectly increased, enhancing the heat exchange effect between the phase change material and the heat exchange medium. On the other hand, the third heat exchange fins 206 form a certain pulling or supporting effect on the first partitions 303 on both sides of the fluid channel 2 to improve the overall anti-deformation strength of the fluid channel 2 and the core 1, and further improve the stability of the heat exchanger.

[0044] To ensure that the cold storage operation of the heat exchanger always proceeds normally, during the cold storage process of the heat exchanger, a first temperature sensor is provided inside the energy storage channel 3, a second temperature sensor is provided inside the fluid input pipe 504, and a third temperature sensor is provided inside the fluid output pipe 505. When the energy storage channel 3 stores cold, the phase change material exchanges heat with the heat transfer medium and stores cold during the phase change process. When the first temperature sensor monitors that the temperature of the phase change material drops, and the temperature of the heat transfer medium detected by the second temperature sensor is lower than the temperature of the heat transfer medium detected by the third temperature sensor, the cold storage operation of the heat exchanger always proceeds normally at this time. When the first temperature sensor monitors that the temperature of the phase change material reaches the limit temperature, and the temperature of the heat transfer medium detected by the second temperature sensor is the same as the temperature of the heat transfer medium detected by the third temperature sensor, the energy storage of the heat exchanger is completed at this time. When the first temperature sensor monitors that the temperature of the phase change material does not reach the limit temperature and the temperature of the phase change material no longer drops, and the temperature of the heat transfer medium detected by the second temperature sensor is the same as the temperature of the heat transfer medium detected by the third temperature sensor, the cold storage operation of the heat exchanger does not proceed normally, prompting the staff to perform maintenance. Of course, the above operation method is still applicable during the cold release process of the heat exchanger.

[0045] In some embodiments of the present invention, both ends of each heat exchange fin two 306 in the first direction are respectively connected to a partition one 303. The heat exchange fin two 306 forms a certain pulling or propping effect on multiple positions on the partition one 303 on both sides of the energy storage channel 3, enabling the partition one 303 on both sides of the energy storage channel 3 to be uniformly stressed, further improving the overall anti-deformation strength of the energy storage channel 3 and the core 1, and enhancing the stability of the heat exchanger.

[0046] Figure 5 Schematic cross-sectional view of the seal provided by the embodiment of the present invention, refer to Figure 5 In some embodiments of the present invention, a plurality of seals 4 are provided on the circumferential side of the energy storage channel 3. The plurality of seals 4 and the two partitions one 303 form the energy storage channel 3. Similarly, a plurality of seals 4 are provided on the circumferential side of the fluid channel 2. The plurality of seals 4 and the two partitions one 303 form the fluid channel 2. Among them, the seal 4 and the partition one 303 are connected by brazing. Optionally, the seal 4 and the partition one 303 are brazed using a vacuum brazing furnace to form the core 1, ensuring the structural stability of the core 1, and further ensuring the sealing and safety of the core 1, thereby maintaining the stability of the heat exchanger during frequent start-stop operations.

[0047] Figure 6 Front view of the top cover provided by the embodiment of the present invention, Figure 7 Top view of the top cover provided by the embodiment of the present invention, refer to Figure 6 and Figure 7, in some embodiments of the present invention, a top cover 110 is provided on the top of the core body 1. The top cover 110 is composed of a plate body 1101 and four L-shaped aluminum plates 1102. Specifically, the plate body 1101 is rectangular. It should be noted that the lower end of the L-shaped aluminum plate 1102 is vertically arranged, and the lower end of the L-shaped aluminum plate 1102 can be installed on the outer side wall of the core body 1 by welding; the upper end of the L-shaped aluminum plate 1102 is horizontally arranged, and the upper end of the L-shaped aluminum plate 1102 is bolted to the four side positions of the plate body 1101. By removing the bolts between the four L-shaped aluminum plates 1102 and the plate body 1101, the plate body 1101 can be removed separately, so as to facilitate adding phase change material into the energy storage channel 3 or taking out the phase change material in the energy storage channel 3.

[0048] Optionally, a buffer space 301 is reserved at the top position of the energy storage channel 3. The buffer space 301 is used to cooperate with the overall dimensional change of the phase change material during phase change expansion and contraction, to avoid the phase change material exerting too large a top holding force on the partition one 303 and the seal 4 and damaging the sealing performance of the energy storage channel 3, and effectively ensure the structural stability of the energy storage channel 3.

[0049] In some embodiments of the present invention, a plurality of first through holes 401 are arranged in an array on the top surface of the seal 4 located on one side of the energy storage channel 3. The axial direction of the first through holes 401 is the third direction, and the third direction is Figure 5 the Z direction shown in, and the third direction is perpendicular to any one of the first direction and the second direction. The phase change material is filled into the energy storage channel 3 through the first through holes 401. It should be noted that the phase change material layer is made of an organic or inorganic material with a stable solid-liquid phase change temperature and high phase change latent heat. Optionally, the phase change material is a low-temperature paraffin-based phase change material. Utilizing the advantages of high latent heat and good safety of the low-temperature paraffin-based phase change material in medium and low-temperature cold storage, it has better cold storage capacity; of course, other types of organic or inorganic materials can also be selected as the phase change material.

[0050] It should be noted that a plurality of second through holes (not shown in the figure) connecting the storage chamber one 304 and the storage chamber two 305 are arranged in an array on the top surface of the heat exchange fin one 302. During the process of filling the phase change material into the energy storage channel 3 through the first through holes 401, the phase change material first enters the storage chamber one 304 and then enters the storage chamber two 305 through the second through holes.

[0051] Optionally, the material of the partition one 303 is aluminum foil material, and the partition one 303 is processed into an embossed shape design by a mold during the production process, which can effectively improve the anti-deformation ability of the formed partition one 303, so that the structural form of the formed partition one 303 does not deform, and further improve the structural stability and assembly dimension precision after welding with the seal 4, and further improve the structural stability of the core body 1 to maintain the stability of the heat exchanger during frequent start-stop operation.

[0052] It should be further noted that, except for the phase change material, the top cover 110, the head 5, the seal 4, the first partition 303, the second partition 501, the first flow guide piece 204, the second flow guide piece 205, etc. in the overall heat exchanger are made of aluminum and aluminum alloy materials to further improve the heat exchange efficiency between the phase change material and the heat exchange medium.

[0053] Working principle of the present invention: When it is necessary to store cold, the heat exchange medium at a corresponding temperature is conveyed from the external connection pipe to the input chamber 502, the heat exchange medium in the input chamber 502 is conveyed to the fluid input part 202 and discharged from the fluid output part 203. During this process, the heat exchange medium flows in a U shape in the fluid channel 2 and exchanges heat fully with the phase change material, transferring the cold of the heat exchange medium to the phase change material. The phase change material stores cold during the phase change process. The heat exchange medium is conveyed to the output chamber 503 through the fluid output part 203 and then conveyed to the external connection pipe through the output chamber 503, completing a single cycle of the heat exchange medium. When it is necessary to release cold, the heat exchange medium at a corresponding temperature is conveyed from the external connection pipe to the input chamber 502, the heat exchange medium in the input chamber 502 is conveyed to the fluid input part 202 and discharged from the fluid output part 203. During this process, the heat exchange medium flows in a U shape in the fluid channel 2 and exchanges heat fully with the phase change material, transferring the cold in the phase change material to the heat exchange medium. The phase change material releases cold during the phase change process. The heat exchange medium is conveyed to the output chamber 503 through the fluid output part 203 and then conveyed to the external connection pipe through the output chamber 503, and the cold is transferred to the environment that needs cold through the heat exchange medium.

[0054] In summary, by using the first heat exchange fin 302 to replace the traditional large-size fin structure, on the premise of ensuring the loading of a large amount of phase change material, the overall weight of the heat exchanger is significantly reduced, realizing a lightweight structural design; and by using a plurality of second heat exchange fins 306 arranged in an array in the energy storage channel 3 to replace the traditional way of setting dense fins inside the core, the weight of the heat exchanger can be effectively reduced, the heat exchange area can be increased, the proportion of the phase change material in the whole product can be increased, and the cold storage and cold release capabilities of the product can be improved. On the other hand, arranging multiple energy storage channels 3 and fluid channels 2 alternately in the core 1 further increases the heat exchange area between the phase change material and the heat exchange medium, thereby improving the heat exchange efficiency between the phase change material and the heat exchange medium, enabling the phase change material to exchange heat efficiently with the heat exchange medium, greatly enhancing the cold storage and cold release rates, realizing large-scale energy storage and exchange in a short time, and further enhancing the heat response speed and energy utilization rate of the overall heat exchanger.

[0055] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0056] In this text, specific examples are used to illustrate the principles and implementation manners of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. A phase change cold storage plate heat exchanger, characterized in that, Comprising: A core body (1), within which a number of energy storage channels (3) and fluid channels (2) are arranged alternately in a first direction. The fluid channels (2) are used to pass a heat exchange medium, and a first partition (303) is provided between adjacent energy storage channels (3) and fluid channels (2). A first heat exchange fin (302) is disposed within the energy storage channel (3). Both ends of the first heat exchange fin (302) in the first direction are respectively connected to a first partition (303). The first heat exchange fin (302) divides the energy storage channel (3) into a first storage chamber (304) and a second storage chamber (305), and phase change materials are filled in both the first storage chamber (304) and the second storage chamber (305). A number of second heat exchange fins (306) are provided. The number of second heat exchange fins (306) is arranged within the energy storage channel (3), and both ends of each second heat exchange fin (306) in the first direction are respectively connected to a first partition (303).

2. The phase change cold storage plate heat exchanger according to claim 1, wherein A baffle strip (201) is disposed within the fluid channel (2). Both ends of the baffle strip (201) in the first direction are respectively connected to a first partition (303). The baffle strip (201) divides the fluid channel (2) into a fluid input portion (202) and a fluid output portion (203) for passing the heat exchange medium. The length direction of the fluid input portion (202) is the second direction, and the first direction is perpendicular to the second direction.

3. The phase change cold storage plate heat exchanger according to claim 2, characterized in that One end of the core body (1) is provided with a head (5). The interior of the head (5) is divided by a second partition (501) into an input chamber (502) communicating with the fluid input portion (202) and an output chamber (503) communicating with the fluid output portion (203).

4. The phase change cold storage plate heat exchanger according to claim 3, characterized in that Fluid input pipes (504) and fluid output pipes (505) are respectively provided at both ends of the head (5) in a third direction. The fluid input pipes (504) and the fluid output pipes (505) are respectively connected to external connecting pipes through flanges, and the third direction is perpendicular to any one of the first direction and the second direction.

5. The phase change cold storage plate heat exchanger according to claim 2, wherein, A number of first guide vanes (204) are provided at the first end of the fluid channel (2). A number of first guide vanes (204) are combined to form a straight channel, and the straight channel is consistent with the length direction of the fluid channel (2). A guiding structure is provided at the second end of the fluid channel (2), and a number of second guide vanes (205) are arranged within the guiding structure. A number of second guide vanes (205) are combined to form a number of U-shaped channels.

6. The phase change cold storage plate heat exchanger according to claim 1, wherein A number of third heat exchange fins (206) are disposed within the fluid channel (2). Both ends of each third heat exchange fin (206) in the first direction are respectively connected to a first partition (303).

7. The phase change cold storage plate heat exchanger according to any one of claims 1-6, characterized in that, A top cover (110) is provided at the top of the core body (1), and a buffer space (301) is reserved at the top position of the energy storage channel (3).

8. The phase change cold storage plate heat exchanger according to any one of claims 1-6, characterized in that, A plurality of seals (4) are arranged on the circumferential side surface of the energy storage channel (3), and the plurality of seals (4) and the two partition plates one (303) form the energy storage channel (3). A plurality of first through holes (401) are arranged in an array on the seal (4) located on one side of the energy storage channel (3), and the axial direction of the first through holes (401) is the third direction.

9. The phase change cold storage plate heat exchanger according to claim 8, wherein, A plurality of second through holes communicating the first storage chamber (304) and the second storage chamber (305) are arranged in an array on the top surface of the first heat exchange fin (302).

10. The phase change cold storage plate heat exchanger according to claim 1, wherein The material of the partition plate one (303) is aluminum foil, and the partition plate one (303) is processed into an embossed shape design through a mold.

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