Micro-channel heat exchanger for testing

Abstract

The utility model relates to the technical field of heat exchanger testing, in particular to a micro-channel heat exchanger for testing. The micro-channel heat exchanger for testing comprises a plurality of heat exchange plates arranged in a stacked mode, the heat exchange plates are provided with channels for medium flowing, the channels of the adjacent heat exchange plates are in one-to-one correspondence and are communicated with each other, the adjacent heat exchange plates are attached to each other, and sealing structures are arranged on the attaching faces of the adjacent heat exchange plates. The plurality of heat exchange plates comprise a first heat exchange plate at the top and a second heat exchange plate at the bottom; the clamping assembly is connected with the first heat exchange plate and the second heat exchange plate so as to fix the multiple heat exchange plates. By adopting the clamping assembly, the number of the heat exchange plates can be conveniently increased or decreased in the testing process, the performance of the heat exchanger can be conveniently tested, and the situation that due to design deviation caused by theoretical calculation, the number of the heat exchange plates cannot meet the performance requirement due to the small number, or unnecessary weight, size and cost are increased due to the large number is avoided. And the situation that the heat exchanger is scrapped due to the fact that the heat exchange plates cannot be increased or decreased due to welding fixation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchanger testing, and particularly relates to a microchannel heat exchanger for testing. Background Art

[0002] For a microchannel heat exchanger, a thin plate is mainly processed into a flow channel heat exchange plate with various flow channel shapes by chemical etching, and after the heat exchange plates are stacked, the heat exchange plates are connected by welding technology to complete the production of the heat exchanger. After the heat exchanger is produced, its performance needs to be tested. However, since the heat exchanger in the prior art is welded into an integral structure, once welded, the product performance and flow resistance cannot be adjusted or changed anymore. If the test performance of the heat exchanger does not meet the appropriate requirements, it can only be scrapped, resulting in a long test cycle and high test cost of the heat exchanger. Content of the Utility Model

[0003] Therefore, the technical problem to be solved by the utility model is to overcome the defects of long test cycle and high test cost of the heat exchanger in the prior art, so as to provide a microchannel heat exchanger.

[0004] To solve the above problems, the utility model provides a microchannel heat exchanger for testing, including:

[0005] A plurality of heat exchange plates arranged in a stacked manner, the heat exchange plates having channels for the medium to flow, the channels of adjacent heat exchange plates corresponding to each other and being interconnected, adjacent heat exchange plates being in contact with each other, and a sealing structure being provided on the contact surface between the heat exchange plate and the adjacent heat exchange plate. The plurality of heat exchange plates include a first heat exchange plate at the top and a second heat exchange plate at the bottom;

[0006] A clamping assembly respectively connected to the first heat exchange plate and the second heat exchange plate to fix the plurality of heat exchange plates.

[0007] Further, the sealing structure includes a sealing groove arranged along the edge of the heat exchange plate and a sealing ring arranged in the sealing groove.

[0008] Further, the clamping assembly includes a pair of spaced clamping plates and a tension bolt. The pair of clamping plates are respectively in contact with the first heat exchange plate and the second heat exchange plate, and both ends of the tension bolt are respectively connected to the pair of clamping plates to fix the plurality of heat exchange plates.

[0009] Further, it further includes:

[0010] Side plates arranged between the clamping plates and the first heat exchange plate, and between the clamping plates and the second heat exchange plate.

[0011] Further, the heat exchange plate has a transition zone, which is arranged along the circumferential side of the heat exchange plate. The transition zone matches the edge of the heat exchange plate, and the sealing structure is arranged in the transition zone.

[0012] Further, the heat exchange plate has a plurality of channels, and the plurality of channels are arranged in an array.

[0013] Further, the cross-section of the sealing groove is a rectangular structure.

[0014] Further, the cross-section of the sealing groove is an inverted trapezoidal structure.

[0015] Further, it further includes:

[0016] A medium inlet and a medium outlet, the medium inlet and the medium outlet are respectively communicated with the channels of the first heat exchange plate and the second heat exchange plate, and temperature detection structures are respectively arranged at the medium inlet and the medium outlet.

[0017] Further, the temperature detection structure has a signal transmission unit, and the signal transmission unit is electrically connected to a display device to transmit the medium temperature to the display device for display.

[0018] The utility model has the following advantages:

[0019] 1. The utility model discloses a microchannel heat exchanger for testing. The clamping assembly is respectively connected to the first heat exchange plate at the top and the second heat exchange plate at the bottom of a plurality of heat exchange plates, fixing the plurality of heat exchange plates, making the adjacent two heat exchange plates fit tightly and be connected closely, and the channels of the adjacent two heat exchange plates are in one-to-one correspondence and communicated, which is convenient for the medium to flow. The clamping assembly and the plurality of heat exchange plates can form a detachable structure, which can conveniently increase or decrease the heat exchange plates during the test, facilitating the performance test of the heat exchanger, avoiding the design deviation caused by theoretical calculation, resulting in too few heat exchange plates unable to meet the performance requirements, or too many heat exchange plates, increasing unnecessary weight, volume and cost, and avoiding the situation that the heat exchanger is scrapped because the heat exchange plates cannot be increased or decreased due to welding fixation. At the same time, in order to prevent the problem that the clamping assembly cannot clamp the heat exchange plates tightly, resulting in the medium flowing out, a sealing structure is also arranged at the edge of the heat exchange plate. The sealing structure can prevent the medium from flowing out and affecting the test results, and the setting of the sealing structure effectively ensures the accuracy of the test results.

[0020] 2. For the microchannel heat exchanger for testing disclosed by the utility model, the sealing groove is arranged along the edge of the heat exchange plate, the structure of the sealing groove matches the edge of the heat exchange plate, and the sealing ring is arranged in the sealing groove, thereby effectively improving the sealing effect.

[0021] 3. The microchannel heat exchanger for testing disclosed by the present utility model, the clamping assembly includes a pair of clamping plates arranged at intervals and tension bolts. The pair of clamping plates are respectively attached to the first heat exchange plate and the second heat exchange plate. The clamping plates cooperate with the tension bolts to enable the clamping plates to apply pressure to the first heat exchange plate and the second heat exchange plate respectively, so as to apply a force to multiple heat exchange plates, making the multiple heat exchange plates fit tightly together, avoiding the occurrence of gaps, resulting in medium leakage and affecting the test effect.

[0022] 4. The microchannel heat exchanger for testing disclosed by the present utility model, side plates are arranged between the clamping plate and the first heat exchange plate and between the clamping plate and the second heat exchange plate. The side plates can prevent the clamping plate from directly contacting the first heat exchange plate and the second heat exchange plate, avoiding damage to the heat exchange plates and affecting the test results.

[0023] 5. The microchannel heat exchanger for testing disclosed by the present utility model, the heat exchange plate has a transition zone, and the sealing structure is arranged in the transition zone. The setting of the transition zone enables the transition zone to be cut off after the heat exchanger passes the test, making the size of the heat exchange plate meet the requirements and then welded to be used as a formal product, effectively reducing the enterprise cost and avoiding the problem that the heat exchanger is scrapped immediately after the test is completed.

[0024] 6. The microchannel heat exchanger for testing disclosed by the present utility model, the heat exchange plate has multiple channels, and the multiple channels are arranged in an array. The array arrangement can make the channels more dispersed and the heat exchange efficiency higher.

[0025] 7. The microchannel heat exchanger for testing disclosed by the present utility model, the cross-section of the sealing groove is a rectangular structure, which is convenient for installing the sealing ring.

[0026] 8. The microchannel heat exchanger for testing disclosed by the present utility model, the cross-section of the sealing groove is an inverted trapezoidal structure. The inverted trapezoidal structure can limit the sealing ring in the sealing groove and prevent the sealing ring from coming out.

[0027] 9. The microchannel heat exchanger for testing disclosed by the present utility model, by arranging a temperature detection structure at the medium inlet and the medium outlet, the signal transmission unit in the temperature detection structure is electrically connected to the display device. Thus, it is convenient for the temperature detection structure to directly transmit the real-time monitored temperature information to the display device, and the display device can display this information, which is convenient for the staff to observe and record. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 Schematic diagram of the heat exchange plate in the embodiment of the present utility model;

[0030] Figure 2 Cross-sectional view of the microchannel heat exchanger for testing in the embodiment of the present utility model;

[0031] Description of reference numerals:

[0032] 1. Heat exchange plate; 2. Channel; 3. First heat exchange plate; 4. Second heat exchange plate; 5. Sealing groove; 6. Sealing ring; 7. Side plate; 8. Transition zone. Specific implementation manners

[0033] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0034] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0035] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0036] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0037] Such as Figures 1 to 2As shown in the figure, this embodiment discloses a microchannel heat exchanger for testing, which includes: a plurality of heat exchange plates 1 stacked and a clamping assembly. The heat exchange plate 1 has a channel 2 for the medium to flow. The channels 2 of adjacent heat exchange plates 1 correspond to each other one by one and are interconnected. Adjacent heat exchange plates 1 are attached to each other. A sealing structure is provided on the joint surface of the heat exchange plate 1 and the adjacent heat exchange plate 1. The plurality of heat exchange plates 1 includes a first heat exchange plate 3 at the top and a second heat exchange plate 4 at the bottom. The clamping assembly is respectively connected to the first heat exchange plate 3 and the second heat exchange plate 4 to fix the plurality of heat exchange plates 1.

[0038] Specifically, the microchannel heat exchanger includes a plurality of heat exchange plates 1 stacked. The plurality of heat exchange plates 1 correspond to each other one by one. The end faces of adjacent two heat exchange plates 1 match and are attached to each other. The heat exchange plate 1 has a channel 2 for the medium to flow. The channels 2 of adjacent two heat exchange plates 1 correspond to each other one by one and are interconnected. The medium can flow through the plurality of heat exchange plates 1 through the channels 2. A sealing structure is provided on the end face of the heat exchange plate 1 facing the adjacent heat exchange plate 1. The sealing structure can prevent the medium from flowing out of the heat exchange plate 1. In this embodiment, the topmost heat exchange plate 1 among the plurality of heat exchange plates 1 is the first heat exchange plate 3, and the lowermost heat exchange plate 1 among the plurality of heat exchange plates 1 is the second heat exchange plate 4. The clamping assembly is respectively connected to the first heat exchange plate 3 and the second heat exchange plate 4. The clamping assembly applies pressure to the first heat exchange plate 3 and the second heat exchange plate 4 respectively, so that the first heat exchange plate 3 moves towards the second heat exchange plate 4 and the second heat exchange plate 4 moves towards the first heat exchange plate 3. The clamping assembly fixes the plurality of heat exchange plates 1 and makes the plurality of heat exchange plates 1 fit more tightly, avoiding gaps between adjacent heat exchange plates 1, resulting in medium leakage and affecting the test results. At the same time, the setting of the sealing structure can avoid the problem of medium leakage caused by the clamping assembly not clamping the plurality of heat exchange plates 1 tightly. The clamping assembly and the heat exchange plate 1 cooperate to form a detachable structure.

[0039] It should be noted that the microchannel heat exchanger for testing in the prior art is obtained by welding and fixing a plurality of heat exchange plates 1, and the number of its heat exchange plates 1 is fixed. When the test performance of the product does not meet the appropriate requirements, the number of heat exchange plates 1 cannot be increased or decreased, and only scrapping treatment can be done; for the microchannel heat exchanger for testing disclosed in this embodiment, the staff can disassemble the heat exchanger according to the test results, can increase or decrease the number of heat exchange plates 1, and can obtain the optimal size structure through multiple tests, avoiding the scrapping treatment of the microchannel heat exchanger for testing in the prior art and effectively avoiding waste of resources.

[0040] Further, the sealing structure includes a sealing groove 5 arranged along the edge of the heat exchange plate 1 and a sealing ring 6 arranged in the sealing groove 5.

[0041] Specifically, as Figure 2As shown, the sealing groove 5 is arranged along the edge of the heat exchange plate 1, and the sealing groove 5 matches the edge of the heat exchange plate 1, so that the heat exchange plate 1 can be better sealed to prevent the medium from flowing out. A sealing ring 6 is arranged in the sealing groove 5, and the sealing ring 6 abuts against the end face of the adjacent heat exchange plate 1, thereby forming a sealing structure to prevent the medium from flowing out.

[0042] Furthermore, the clamping assembly includes a pair of clamping plates arranged at intervals and a tension bolt. The pair of clamping plates are respectively attached to the first heat exchange plate 3 and the second heat exchange plate 4, and both ends of the tension bolt are respectively connected to the pair of clamping plates to fix the plurality of heat exchange plates 1.

[0043] Specifically, the clamping assembly includes a pair of clamping plates (not shown) and a tension bolt (not shown). The length and width of the clamping plates are both larger than those of the heat exchange plate 1. The pair of clamping plates are respectively attached to the first heat exchange plate 3 and the second heat exchange plate 4. One tension bolt is arranged on each of the upper and lower sides of the clamping plates. Both ends of the tension bolt are respectively connected to the pair of clamping plates. By tightening the tension bolt, the clamping plates move closer to each other and apply pressure to the heat exchange plate 1, so that the plurality of heat exchange plates 1 are closely attached to avoid generating gaps.

[0044] In other embodiments, the clamping assembly can also be a cylinder and a push plate. The push plate is respectively attached to the first heat exchange plate 3 and the second heat exchange plate 4, and the cylinder provides a thrust force for the push plate to make the plurality of heat exchange plates 1 closely attached.

[0045] Furthermore, it further includes: side plates 7. The side plates 7 are arranged between the clamping plates and the first heat exchange plate 3, and between the clamping plates and the second heat exchange plate 4.

[0046] Specifically, as Figure 2 shown, side plates 7 are arranged between the clamping plates and the first heat exchange plate 3, and between the clamping plates and the second heat exchange plate 4. The clamping plates are attached to the side plates 7, and the side plates 7 are attached to the first heat exchange plate 3 or the second heat exchange plate 4. The side plates 7 can prevent the clamping plates from directly contacting the heat exchange plate 1, and can avoid damage to the heat exchange plate 1 caused by excessive acting force of the clamping plates, affecting the test results.

[0047] Furthermore, the heat exchange plate 1 has a transition zone 8. The transition zone 8 is arranged along the circumferential side of the heat exchange plate 1, and the transition zone 8 matches the edge of the heat exchange plate 1. The sealing structure is arranged in the transition zone 8.

[0048] Specifically, as Figure 1As shown, the transition zone 8 is arranged along the circumferential side of the heat exchange plate 1, and the sealing structure is arranged in the transition zone 8. The transition zone 8 is convenient for testing. When the heat exchange plate 1 is produced, the size of the heat exchange plate 1 can be deliberately increased, and the area exceeding the set size is set as the transition zone 8. The sealing groove 5 is arranged in the transition zone 8. After the test is completed, the transition zone 8 of the heat exchange plate 1 can be cut off, and the size of the heat exchange plate 1 can be cut into the size of the required product. After welding and fixing a plurality of heat exchange plates 1, they can be used as formal products, avoiding scrapping the microchannel heat exchanger after the test is completed, which is beneficial to saving resources.

[0049] It should be noted that the transition zone 8 can also be retained according to the design requirements.

[0050] Furthermore, as Figure 1 shown, the heat exchange plate 1 has a plurality of channels 2, and the plurality of channels 2 are arranged in an array.

[0051] Preferably, as Figure 2 shown, the cross-section of the sealing groove 5 is a rectangular structure, and the rectangular structure is convenient for installing the sealing ring 6. In other alternative embodiments, the cross-section of the sealing groove 5 is an inverted trapezoidal structure, and the inverted trapezoid can limit the sealing ring 6 to prevent the sealing ring 6 from coming out.

[0052] Furthermore, it further includes: a medium inlet and a medium outlet, the medium inlet and the medium outlet are respectively communicated with the channels 2 of the first heat exchange plate 3 and the second heat exchange plate 4, and temperature detection structures are respectively arranged at the medium inlet and the medium outlet.

[0053] Furthermore, the temperature detection structure has a signal transmission unit, and the signal transmission unit is electrically connected to a display device to transmit the medium temperature to the display device for display.

[0054] In this embodiment, a plurality of heat exchange plates 1 are clamped and fixed by a pair of clamping plates and tension bolts. The adjacent heat exchange plates 1 are closely attached. There is a side plate 7 between the clamping plate and the heat exchange plate 1. The clamping plate can apply a force to the side plate 7, and the side plate 7 acts on the heat exchange plate 1, avoiding direct contact between the clamping plate and the heat exchange plate 1. There is a transition zone 8 on the heat exchange plate 1. There is a sealing groove 5 in the transition zone 8 that matches the edge of the heat exchange plate 1. A sealing ring 6 is arranged in the sealing groove 5, and the sealing ring 6 abuts against the adjacent heat exchange plate 1, thus forming a sealing structure. The transition zone 8 can be retained or cut off after the test is completed. The medium inlet and the medium outlet are respectively communicated with the channels 2. The medium enters the heat exchanger through the medium inlet, flows through a plurality of heat exchange plates 1, and then flows into the medium outlet. Temperature detection structures are arranged at the medium inlet and the medium outlet. The temperature detection structure can be electrically connected to the display device through the signal transmission unit, so as to transmit the real-time temperature of the medium to the display device for display.

[0055] With the help of the microchannel heat exchanger for testing disclosed according to this embodiment, the heat exchange plate 1 is set as a detachable structure, which improves the testing ability of the heat exchanger. The number of heat exchange fins can be adjusted for heat transfer and flow resistance testing, improving the accuracy of product performance. At the same time, the design cost of the heat exchanger is reduced. Since the heat exchange fins are detachable and the number of heat exchange plates 1 is adjustable, the manufacturing and welding costs of the test pieces can be reduced, and the testing cycle can be shortened.

[0056] Obviously, the above embodiments are merely examples given for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present utility model.

Claims

1. A microchannel heat exchanger for testing, characterized in that, Comprising: A plurality of heat exchange plates (1) arranged in layers, the heat exchange plates (1) having channels (2) for the flow of a medium, the channels (2) of adjacent heat exchange plates (1) corresponding to each other one by one and being interconnected, adjacent heat exchange plates (1) being in close contact with each other, and a sealing structure being provided on the contact surface of the heat exchange plate (1) with the adjacent heat exchange plate (1). The plurality of heat exchange plates (1) include a first heat exchange plate (3) at the top and a second heat exchange plate (4) at the bottom. A clamping assembly, which is respectively connected to the first heat exchange plate (3) and the second heat exchange plate (4) to fix the plurality of heat exchange plates (1).

2. The microchannel heat exchanger for testing according to claim 1, wherein: The sealing structure includes a sealing groove (5) provided along the edge of the heat exchange plate (1) and a sealing ring (6) provided in the sealing groove (5).

3. The microchannel heat exchanger for testing according to claim 1, wherein: The clamping assembly includes a pair of spaced-apart clamping plates and a tension bolt. The pair of clamping plates are respectively in close contact with the first heat exchange plate (3) and the second heat exchange plate (4), and the two ends of the tension bolt are respectively connected to the pair of clamping plates to fix the plurality of heat exchange plates (1).

4. The microchannel heat exchanger for testing according to claim 3, characterized in that Further comprising: Side plates (7), which are provided between the clamping plates and the first heat exchange plate (3), and between the clamping plates and the second heat exchange plate (4).

5. The microchannel heat exchanger for testing according to claim 1, wherein: The heat exchange plate (1) has a transition zone (8), the transition zone (8) is provided along the circumferential side of the heat exchange plate (1), the transition zone (8) matches the edge of the heat exchange plate (1), and the sealing structure is provided in the transition zone (8).

6. The microchannel heat exchanger for testing according to any one of claims 1 to 5, wherein: The heat exchange plate (1) has a plurality of channels (2), and the plurality of channels (2) are arranged in an array.

7. The microchannel heat exchanger for testing according to claim 2, wherein: The cross-section of the sealing groove (5) is a rectangular structure.

8. The microchannel heat exchanger for testing according to claim 2, wherein: The cross-section of the sealing groove (5) is an inverted trapezoidal structure.

9. The microchannel heat exchanger for testing according to claim 6, wherein, Further comprising: A medium inlet and a medium outlet, the medium inlet and the medium outlet are respectively communicated with the channels (2) of the first heat exchange plate (3) and the second heat exchange plate (4), and temperature detection structures are respectively provided at the medium inlet and the medium outlet.

10. The microchannel heat exchanger for testing according to claim 9, wherein: The temperature detection structure has a signal transmission unit, and the signal transmission unit is electrically connected to a display device to transmit the medium temperature to the display device for display.

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