Heat exchanger and heat exchange device

Abstract

The utility model discloses a heat exchanger and a heat exchange equipment, the heat exchanger includes: defrosting pipeline and with the defrosting pipeline connection's adapter pipe, the defrosting pipeline includes first pipeline body and sets up on the outer surface of first pipeline body's first sacrificial layer, the adapter pipe includes second pipeline body and sets up on the outer surface of second pipeline body's second sacrificial layer, the utility model embodiment's heat exchanger's defrosting pipeline and adapter pipe's surface all are provided with sacrificial layer, when with corrosive medium contact, sacrificial layer can be preferentially corroded to make defrosting pipeline and adapter pipe have good anticorrosive performance.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange technology, and more specifically, to a heat exchanger and a heat exchange device. Background Technology

[0002] Aluminum heat exchangers are widely used due to their advantages of high heat exchange efficiency, light weight, and low cost. However, corrosive media such as condensate and rainwater from above the heat exchanger drip onto the defrosting pipes and semi-circular pipes below due to gravity. These pipes are constantly in a damp, liquid-filled state, making them prone to corrosion and significantly shortening the lifespan of the aluminum heat exchanger. Utility Model Content

[0003] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of protection of this utility model.

[0004] This utility model provides a heat exchanger and a heat exchange device including the heat exchanger. The heat exchanger has good corrosion resistance and a long service life.

[0005] This utility model provides a heat exchanger, which includes: a defrosting pipe and a transfer pipe connected to the defrosting pipe; the defrosting pipe includes a first pipe body and a first sacrificial layer disposed on the outer surface of the first pipe body; the transfer pipe includes a second pipe body and a second sacrificial layer disposed on the outer surface of the second pipe body.

[0006] In some embodiments of this utility model, the thickness of the first sacrificial layer is not less than 150 μm, and the thickness of the second sacrificial layer is not less than 150 μm.

[0007] In some embodiments of this utility model, the thickness of the first sacrificial layer can be from 150 μm to 1 mm, and the thickness of the second sacrificial layer can be from 150 μm to 1 mm.

[0008] In some embodiments of this invention, the thickness of the first sacrificial layer and the thickness of the second sacrificial layer may be the same or different.

[0009] In some embodiments of this utility model, the first sacrificial layer and the second sacrificial layer can be an integral structure.

[0010] In some embodiments of this utility model, the entire outer surface of the first pipe body can be covered by the first sacrificial layer, and the entire outer surface of the second pipe body can be covered by the second sacrificial layer.

[0011] In some embodiments of this utility model, the adapter pipe may have an arc-shaped structure, which bends along the direction toward the defrosting pipe; the inner diameter of the defrosting pipe may be larger than the outer diameter of the adapter pipe, and the adapter pipe is sleeved in the defrosting pipe.

[0012] In some embodiments of this utility model, the heat exchanger can be an aluminum heat exchanger, and both the first pipe body and the second pipe body can be aluminum components.

[0013] In some embodiments of this utility model, the first sacrificial layer and the second sacrificial layer can each be independently a zinc plating layer, a zinc diffusion layer, or a zinc spraying layer.

[0014] This utility model embodiment also provides a heat exchange device, which includes the heat exchanger described above.

[0015] In some embodiments of this utility model, the heat exchange device can be an air conditioner.

[0016] The heat exchanger of this utility model provides a first sacrificial layer on the outer surface of the first pipe body of the defrosting pipe and a second sacrificial layer on the outer surface of the second pipe body of the transfer pipe. When in contact with corrosive media, the first and second sacrificial layers can be preferentially corroded, thereby protecting the first pipe body of the defrosting pipe and the second pipe body of the transfer pipe, thus achieving better corrosion resistance and extending the service life of the heat exchanger.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solution of this utility model and do not constitute a limitation on the technical solution of this utility model.

[0019] Figure 1 This is a three-dimensional structural diagram of a heat exchanger, which is an exemplary embodiment of the present invention. Figure 2 for Figure 1 The enlarged view of the heat exchanger at point A is shown. Figure 3 This is a partial cross-sectional structural diagram of a heat exchanger, which is an exemplary embodiment of the present invention. Figure 4A partial cross-sectional view of another heat exchanger as an exemplary embodiment of the present invention; Figure 5 This is a partial cross-sectional structural diagram of another heat exchanger according to an exemplary embodiment of the present invention. Figure 6 This is a schematic diagram of the corrosion prevention process of a heat exchanger, which is an exemplary embodiment of this utility model.

[0020] The meanings of the symbols in the attached diagram are as follows: 1-Corrosive medium; 2-Corrosion inlet; 10-Defrosting pipe; 11-First pipe body; 12-First sacrificial layer; 20-Transfer pipe; 21-Second pipe body; 22-Second sacrificial layer; 30-Side plate; 31-Third body; 32-Third sacrificial layer; 100-Heat exchanger. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

[0022] This utility model provides a heat exchanger, which includes a defrosting pipe and a transfer pipe connected to the defrosting pipe; the defrosting pipe includes a first pipe body and a first sacrificial layer disposed on the outer surface of the first pipe body; the transfer pipe includes a second pipe body and a second sacrificial layer disposed on the outer surface of the second pipe body.

[0023] The heat exchanger of this utility model provides a first sacrificial layer on the outer surface of the first pipe body of the defrosting pipe and a second sacrificial layer on the outer surface of the second pipe body of the transfer pipe. When in contact with corrosive media, the first and second sacrificial layers can be preferentially corroded, thereby protecting the first pipe body of the defrosting pipe and the second pipe body of the transfer pipe, thus achieving better corrosion resistance and extending the service life of the heat exchanger.

[0024] In some embodiments of this utility model, the thickness of the first sacrificial layer can be in the range of not less than 150 μm. For example, the thickness of the first sacrificial layer can be in the range of 150 μm to 1 mm; or, for example, the thickness of the first sacrificial layer can be 150 μm, 200 μm, 300 μm, 400 μm, 500 μm, 600 μm, 700 μm, 800 μm, 900 μm or 1 mm.

[0025] When the thickness of the first sacrificial layer is not less than 150 μm, a good anti-corrosion effect can be obtained. When the thickness of the first sacrificial layer is in the range of 150 μm to 1 mm, not only can a good anti-corrosion effect be obtained, but the zinc first sacrificial layer is also easier to form in this thickness range. Moreover, in the range of 150 μm to 1 mm, the greater the thickness of the first sacrificial layer, the better the anti-corrosion effect.

[0026] In some embodiments of this utility model, the thickness of the second sacrificial layer can be in the range of not less than 150 μm. For example, the thickness of the second sacrificial layer can be in the range of 150 μm to 1 mm; or, for example, the thickness of the second sacrificial layer can be 150 μm, 200 μm, 300 μm, 400 μm, 500 μm, 600 μm, 700 μm, 800 μm, 900 μm or 1 mm.

[0027] When the thickness of the second sacrificial layer is not less than 150 μm, a good anti-corrosion effect can be obtained. When the thickness of the second sacrificial layer is in the range of 150 μm to 1 mm, not only can a good anti-corrosion effect be obtained, but the zinc second sacrificial layer is also easier to form within this thickness range. Moreover, within the range of 150 μm to 1 mm, the greater the thickness of the second sacrificial layer, the better the anti-corrosion effect.

[0028] The thickness of the first sacrificial layer is in the range of not less than 150 μm, and the thickness of the second sacrificial layer is in the range of not less than 150 μm; for example, the thickness of the first sacrificial layer is in the range of 150 μm to 1 mm, and the thickness of the second sacrificial layer is in the range of 150 μm to 1 mm.

[0029] In some embodiments of this invention, the thickness of the first sacrificial layer and the thickness of the second sacrificial layer may be the same or different.

[0030] In some embodiments of this utility model, the first sacrificial layer and the second sacrificial layer can be an integral structure. For example, the first sacrificial layer and the second sacrificial layer can be formed by the same process. For example, the first pipe body of the defrosting pipe and the second pipe body of the transfer pipe can be assembled together first, and then they can be subjected to overall anti-corrosion treatment to form a continuous sacrificial layer on the surface of the first pipe body of the defrosting pipe and the surface of the second pipe body of the transfer pipe. That is, the first sacrificial layer and the second sacrificial layer share this continuous sacrificial layer, or it can be understood that the first sacrificial layer and the second sacrificial layer are located in different areas of the continuous sacrificial layer.

[0031] In other embodiments, the first sacrificial layer and the second sacrificial layer can be formed in different process steps. For example, after forming the first pipe body of the defrosting pipe and the second pipe body of the transfer pipe, respectively, the first pipe body of the defrosting pipe and the second pipe body of the transfer pipe can be subjected to anti-corrosion treatment. The thickness of the first sacrificial layer and the second sacrificial layer formed by different process steps can be the same or different, and the materials can be the same or different.

[0032] In some embodiments of this utility model, the entire outer surface of the first pipe body is covered by the first sacrificial layer, and the entire outer surface of the second pipe body is covered by the second sacrificial layer.

[0033] In some embodiments of this utility model, the adapter pipe may have an arc-shaped structure, which bends along the direction toward the defrosting pipe; the inner diameter of the defrosting pipe may be larger than the outer diameter of the adapter pipe, and the adapter pipe is sleeved in the defrosting pipe.

[0034] In some embodiments of this utility model, both the first pipe body and the second pipe body can be aluminum components.

[0035] In some embodiments of this invention, the materials of the first sacrificial layer and the second sacrificial layer can each be independently selected from commonly used zinc-based sacrificial anode materials, magnesium-based sacrificial anode materials, or aluminum-based alloy sacrificial anode materials. For example, the first sacrificial layer and the second sacrificial layer can each be independently a zinc-plated layer, a zinc-diffused layer, or a zinc-sprayed layer.

[0036] When galvanized, zinc-diffused, or zinc-sprayed layers are used as the first and second sacrificial layers, the corrosion of these layers can form zinc oxide and / or zinc hydroxide films. These films can also act as protective layers, preventing the first and second sacrificial layers from corroding too quickly and further delaying the corrosion of the first pipe body of the defrosting pipe and the second pipe body of the transfer pipe. This results in improved corrosion resistance and extended service life of the heat exchanger.

[0037] In some embodiments of this utility model, the heat exchanger can be an aluminum heat exchanger.

[0038] In some embodiments of this utility model, the transfer tube can be a semi-circular tube of an aluminum heat exchanger.

[0039] Figure 1 This is a three-dimensional structural diagram of a heat exchanger, which is an exemplary embodiment of the present invention. Figure 2 for Figure 1 The enlarged view of the heat exchanger at point A is shown. Figure 3This is a partial cross-sectional structural diagram of a heat exchanger, which is an exemplary embodiment of the present invention. Figure 4 A partial cross-sectional view of another heat exchanger as an exemplary embodiment of the present invention; Figure 5 This is a partial cross-sectional structural diagram of another heat exchanger as an exemplary embodiment of the present invention.

[0040] like Figures 1 to 5 As shown, the heat exchanger 100 includes a defrosting pipe 10 and a transfer pipe 20 connected to each other; The defrosting pipe 10 includes a first pipe body 11 and a first sacrificial layer 12 disposed on the outer surface of the first pipe body 11. The connecting pipe 20 includes a second pipe body 21 and a second sacrificial layer 22 disposed on the outer surface of the second pipe body 21. Both the first pipe body 11 and the second pipe body 21 are aluminum components, that is, the material of both the first pipe body 11 and the second pipe body 21 is aluminum. The first sacrificial layer 12 and the second sacrificial layer 22 can each be independently a galvanized layer, a zinc-diffused layer, or a zinc-sprayed layer. For example, both can be zinc-diffused layers. The thickness of the first sacrificial layer 12 can be in the range of not less than 150 μm, for example, the thickness of the first sacrificial layer 12 can be in the range of 150 μm to 1 mm; The thickness of the second sacrificial layer 22 can be in the range of not less than 150 μm, for example, the thickness of the second sacrificial layer 22 can be in the range of 150 μm to 1 mm.

[0041] exist Figure 3 In the heat exchanger 100 shown, the first sacrificial layer 12 is located only on a portion of the surface of the first pipe body 11 of the defrosting pipe 10, and the second sacrificial layer 22 is located only on a portion of the surface of the second pipe body 21 of the transfer pipe 20; and the first sacrificial layer 12 and the second sacrificial layer 22 are integral structures, and their thickness and materials are the same.

[0042] exist Figure 4 and Figure 5 In the heat exchanger 100 shown, the first sacrificial layer 12 covers the entire outer surface of the first pipe body 11 of the defrosting pipe 10, and the second sacrificial layer 22 covers the entire outer surface of the second pipe body 21 of the transfer pipe 20; and the first sacrificial layer 12 and the second sacrificial layer 22 are integral structures, and their thickness and materials are the same.

[0043] like Figures 3 to 5 As shown, the adapter pipe 20 may have an arc-shaped structure that bends along the direction toward the defrosting pipe 10.

[0044] like Figure 4 and Figure 5 As shown, the inner diameter of the defrosting pipe 10 can be larger than the outer diameter of the adapter pipe 20, and the adapter pipe 20 can be fitted into the defrosting pipe 10.

[0045] like Figures 3 to 5 As shown, the heat exchanger 100 may also include a side plate 30, which includes a third body 31. For example, the third body 31 may be made of aluminum. The defrost pipe 10 is disposed on the side plate 30, and the adapter pipe 20 is connected to the defrost pipe 10.

[0046] exist Figure 5 In the heat exchanger 100 shown, the side plate 30 may further include a third sacrificial layer 32; the third sacrificial layer 32 is disposed on the surface of the third body 31; The thickness of the third sacrificial layer 32 is in the range of not less than 150 μm. For example, the thickness of the third sacrificial layer 32 can be in the range of 150 μm to 1 mm. The thickness of the third sacrificial layer 32 can be the same as or different from the thickness of the first sacrificial layer 12, and the thickness of the third sacrificial layer 32 can be the same as or different from the thickness of the second sacrificial layer 22. The material of the third sacrificial layer 32 can be selected from commonly used zinc-based sacrificial anode materials, magnesium-based sacrificial anode materials, or aluminum-based alloy sacrificial anode materials; for example, the third sacrificial layer 32 can be a zinc-plated layer, a zinc-diffused layer, or a zinc-sprayed layer; the material of the third sacrificial layer 32 can be the same as or different from the material of the first sacrificial layer 12, and the material of the third sacrificial layer 32 can be the same as or different from the material of the second sacrificial layer 22. For example, the first sacrificial layer 12, the second sacrificial layer 22, and the third sacrificial layer 32 can be an integral structure with the same thickness, and are all zinc-plated, zinc-diffused, or zinc-sprayed layers. Alternatively, the first sacrificial layer 12, the second sacrificial layer 22, and the third sacrificial layer 32 can all be zinc-diffused layers with thicknesses ranging from 150 μm to 1 mm.

[0047] Setting a third sacrificial layer 32 on the surface of the third body 31 of the side plate 30 can improve the corrosion resistance of the third body 31 and extend the service life of the side plate 30.

[0048] like Figure 5 As shown, the third body 31 of the side plate 30 may be provided with multiple openings, through which the first pipe body 11 of the defrosting pipe 10 passes; the third sacrificial layer 32 may extend to the inner wall of the opening.

[0049] The stress concentration at the contact point between the first pipe body 11 of the defrosting pipe 10 and the third body 31 of the side plate 30 (i.e., the inner wall of the opening) is easily corroded by corrosive media such as air and moisture, making it a weak point in corrosion prevention. Providing a third sacrificial layer 32 on the inner wall of the opening can prevent corrosive media from entering the opening along the gap between the first pipe body 11 and the third body 31 and corroding the first pipe body 11.

[0050] Figure 6Schematic diagram of the anti-corrosion process of the heat exchanger according to an exemplary embodiment of the present utility model. As Figure 6 shown: The anti-corrosion reaction mechanism of the heat exchanger according to an exemplary embodiment of the present utility model is: The first step: ZnO + 2Cl - → ZnCl2 + O 2- ; The second step: 2Zn + O2 → 2ZnO; ZnO + H2O → Zn(OH)2; The third step: CO2 + ZnO → ZnCO3.

[0051] Taking the anti-corrosion process of the defrosting pipeline 10 as an example to illustrate the anti-corrosion process of the heat exchanger according to an embodiment of the present utility model, the first sacrificial layer 12 contacts the corrosive medium 1, the surface of the first sacrificial layer 12 is corroded to form a corrosion inlet 2, and then the corrosion develops along the first sacrificial layer 12, thereby delaying the corrosion of the defrosting pipeline 10.

[0052] An embodiment of the present utility model further provides a heat exchange device, and the heat exchange device includes the heat exchanger as described above.

[0053] In some embodiments of the present utility model, the heat exchange device may be an air conditioner. For example, the air conditioner may be a window air conditioner, a split air conditioner or a mobile air conditioner.

[0054] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "perimeter", "the structure of the character 'kou'", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0055] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", "assembly" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; the terms "installation", "connection", "fixed connection" may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two components. 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.

[0056] Although the embodiments disclosed in this utility model are as described above, the content described is only for the purpose of facilitating understanding of this utility model and is not intended to limit this utility model. Any person skilled in the art to which this utility model pertains may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this utility model, but the patent protection scope of this utility model shall still be defined by the appended claims.

Claims

1. A heat exchanger, characterized in that, include: A defrosting pipe and a connecting pipe connected to the defrosting pipe; the defrosting pipe includes a first pipe body and a first sacrificial layer disposed on the outer surface of the first pipe body; the connecting pipe includes a second pipe body and a second sacrificial layer disposed on the outer surface of the second pipe body.

2. The heat exchanger according to claim 1, characterized in that, The thickness of the first sacrificial layer is not less than 150 μm, and the thickness of the second sacrificial layer is not less than 150 μm.

3. The heat exchanger according to claim 2, characterized in that, The thickness of the first sacrificial layer is 150 μm to 1 mm, and the thickness of the second sacrificial layer is 150 μm to 1 mm.

4. The heat exchanger according to claim 1, characterized in that, The thickness of the first sacrificial layer may be the same as or different from the thickness of the second sacrificial layer.

5. The heat exchanger according to any one of claims 1 to 4, characterized in that, The first sacrificial layer and the second sacrificial layer are an integral structure.

6. The heat exchanger according to any one of claims 1 to 4, characterized in that, The entire outer surface of the first pipe body is covered by the first sacrificial layer, and the entire outer surface of the second pipe body is covered by the second sacrificial layer.

7. The heat exchanger according to any one of claims 1 to 4, characterized in that, The adapter pipe has an arc-shaped structure that bends along the direction toward the defrosting pipe; the inner diameter of the defrosting pipe is larger than the outer diameter of the adapter pipe, and the adapter pipe is fitted inside the defrosting pipe.

8. The heat exchanger according to any one of claims 1 to 4, characterized in that, The heat exchanger is an aluminum heat exchanger, and both the first pipe body and the second pipe body are aluminum components.

9. The heat exchanger according to claim 8, characterized in that, The first sacrificial layer and the second sacrificial layer are each independently a zinc-plated layer, a zinc-diffused layer, or a zinc-sprayed layer.

10. A heat exchange device, characterized in that, Includes the heat exchanger according to any one of claims 1 to 9.

11. The heat exchange device according to claim 10, characterized in that, For air conditioning.

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