CN219222666U - Fin tube heat exchanger and refrigeration equipment - Google Patents

Abstract

The application relates to the technical field of refrigeration, and discloses a fin tube heat exchanger, which comprises: the end plate assembly comprises a first end plate and a second end plate which are the same in structure, and the first end plate and the second end plate are made of carbon steel; the heat exchange coil pipe can pass through the first end plate and the second end plate and is coiled between the first end plate and the second end plate in a bending way; the heat exchange fins are sleeved on the heat exchange coil pipes between the first end plate and the second end plate; and the electromagnetic coil is arranged on the surfaces of the first end plate and the second end plate. The fin tube type heat exchanger can improve defrosting efficiency of the heat exchanger and reduce defrosting duration and energy consumption. The application also discloses a refrigeration device.

Description

Fin tube heat exchanger and refrigeration equipment

Technical Field

The application relates to the technical field of refrigeration, for example to a fin-tube heat exchanger and refrigeration equipment.

Background

Currently, the structure of an air conditioner includes a compressor, a condenser located outdoors, a four-way valve, a one-way valve, a capillary tube assembly, and the like. The parallel flow heat exchanger is often used as an outdoor condenser of the air conditioner, and the parallel flow heat exchanger commonly used in the air conditioner is an all-aluminum heat exchanger, has high heat exchange efficiency and compact structure, and has more advantages compared with a common copper pipe heat exchanger in cost. However, when the parallel flow heat exchanger is used as an outdoor condenser of a cooling and heating machine, the heat exchange capability under the low temperature working condition is not as good as that of a copper pipe heat exchanger with the same specification, and the main reasons are that the frosting speed of the parallel flow heat exchanger is higher and the frosting speed is slower compared with that of the copper pipe heat exchanger under the low temperature working condition.

In the related art, the evaporator comprises a heat exchange tube and fins sleeved outside the heat exchange tube, and an electric heating wire is wound outside the heat exchange tube.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

the heating speed of the electric heating wire is low, the contact area between the electric heating wire and the heat exchange tube is small, most of heat generated by the electric heating wire is emitted to the surrounding space, and only a small part of heat can be transferred to the heat exchange tube and the fins for defrosting in a contact conduction mode, so that the defrosting time is long, the energy consumption is high, and the defrosting effect is poor.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present application and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a fin tube type heat exchanger and refrigeration equipment, which are used for improving defrosting efficiency of the heat exchanger and reducing defrosting duration and energy consumption.

In some embodiments, the fin tube heat exchanger comprises: the end plate assembly comprises a first end plate and a second end plate which are the same in structure, and the first end plate and the second end plate are made of carbon steel; the heat exchange coil pipe can pass through the first end plate and the second end plate and is coiled between the first end plate and the second end plate in a bending way; the heat exchange fins are sleeved on the heat exchange coil pipes between the first end plate and the second end plate; and the electromagnetic coil is arranged on the surfaces of the first end plate and the second end plate.

In some embodiments, the electromagnetic coil is wound around an outer surface of the first end plate and the second end plate.

In some embodiments, the electromagnetic coil includes an electromagnetic wire wound in a first direction or a second direction to form a coil disk disposed against outer surfaces of the first end plate and the second end plate.

In some embodiments, the outer surface of the electromagnetic coil is coated with a hydrophobic coating.

In some embodiments, the outer surface of the electromagnetic coil is provided with an anti-corrosion layer.

In some embodiments, the outer surfaces of the first and second end plates are each coated with an anti-corrosion coating.

In some embodiments, the heat exchange fin includes opposite first and second sides, the first and/or second sides being provided with water guide grooves arranged in a vertical direction.

In some embodiments, in the case that the first side surface and the second side surface are both provided with water guide grooves, the water guide grooves opened at the first side surface and the water guide grooves opened at the second side surface are staggered.

In some embodiments, the heat exchange fins comprise first fins and second fins arranged at intervals, wherein the height of the first fins is smaller than the height of the second fins.

In some embodiments, the refrigeration device includes: a fin and tube heat exchanger as described above.

The fin-tube heat exchanger and the refrigeration equipment provided by the embodiment of the disclosure can realize the following technical effects:

if the electric heating wire or the electric heating pipe is adopted to defrost the heat exchanger, only a small part of heat generated by the electric heating wire or the electric heating pipe acts on the surface of the heat exchanger to heat and melt the frost layer, but the rest large part of heat is directly emitted into the air around the heat exchanger and cannot be used for defrosting the heat exchanger, so that the heat loss of the electric heating wire or the electric heating pipe is serious, the time and energy consumption are long, and the defrosting speed is low.

When the electromagnetic coil is electrified and alternating current is applied, the electromagnetic coil generates an alternating magnetic field, so that eddy currents are generated in the first end plate and the second end plate which are made of carbon steel and heat is generated. On the one hand, the first end plate and the second end plate can be heated, and energy on the first end plate and the second end plate can be transmitted to the heat exchange coil and the heat exchange fin close to the first end plate and the second end plate through radiation heat transfer; on the other hand, can radiate heat and conduction heat to the heat exchange coil that is close to first end plate and second end plate, make the heat transfer medium in the heat exchange coil intensify, and further, through the mode of heat conduction, the heat transfer medium can be with heat transfer to the heat transfer fin and keep away from on the heat exchange coil of first end plate and second end plate.

According to the fin-tube heat exchanger provided by the embodiment of the disclosure, under the condition that the heat exchange coil and the heat exchange fins are made of aluminum or other materials, most of heat generated by the electromagnetic coil can act on the fin-tube heat exchanger in the defrosting process of the fin-tube heat exchanger provided by the embodiment of the disclosure, and heat loss is little, so that defrosting efficiency is improved, defrosting time is reduced, and energy utilization rate is improved.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

FIG. 1 is a schematic view of a fin tube heat exchanger provided in an embodiment of the present disclosure;

FIG. 2 is a schematic view of another fin tube heat exchanger provided by an embodiment of the present disclosure;

FIG. 3 is a schematic view of a first end plate according to an embodiment of the present disclosure;

FIG. 4 is a schematic cross-sectional view of one heat exchange fin provided by an embodiment of the present disclosure;

fig. 5 is a schematic view of another fin tube heat exchanger provided in an embodiment of the present disclosure.

Reference numerals:

100. an end plate assembly; 110. a first end plate; 120. a second end plate; 130. a group of through holes; 131. a through hole;

200. a heat exchange coil; 210. a straight pipe section; 220. bending sections;

300. a heat exchange fin; 310. a first side; 320. a second side; 330. a first fin; 340. a second fin;

400. an electromagnetic coil.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other cases, well-known structures and fin-and-tube heat exchangers may be simplified in illustration for simplicity of the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are primarily intended to better describe the embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated fin tube heat exchanger, element or component to have a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; can be directly connected or indirectly connected through an intermediate medium, or can be internal communication between two fin tube heat exchangers, elements or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "plurality" means two or more, unless otherwise indicated.

In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

In the related art, when the electric heating wire or the electric heating pipe is adopted to defrost the heat exchanger, only a small part of heat generated by the electric heating wire or the electric heating pipe acts on the surface of the heat exchanger to heat and melt the frost layer, but the rest large part of heat is directly emitted into the surrounding air of the heat exchanger and cannot be used for defrosting the heat exchanger, so that the heat loss of the electric heating wire or the electric heating pipe is serious, the time and energy consumption are long, and the defrosting speed is slow.

Therefore, the embodiment of the disclosure provides a fin tube type heat exchanger and refrigeration equipment, which can improve defrosting efficiency of the heat exchanger and reduce defrosting duration and energy consumption.

As shown in conjunction with fig. 1 and 2, a fin-and-tube heat exchanger provided in an embodiment of the present disclosure includes an end plate assembly 100, a heat exchange coil 200, heat exchange fins 300, and an electromagnetic coil 400.

The end plate assembly 100 includes a first end plate 110 and a second end plate 120 having the same structure, and the first end plate 110 and the second end plate 120 are made of carbon steel.

The heat exchange coil 200 passes through the first end plate 110 and the second end plate 120 and is sinuously wound between the first end plate 110 and the second end plate 120.

The plurality of heat exchange fins 300 are sleeved on the heat exchange coil 200 between the first end plate 110 and the second end plate 120.

The electromagnetic coil 400 is provided on the surfaces of the first and second end plates 110 and 120.

Optionally, the first end plate 110 and the second end plate 120 have the same structure, which not only includes carbon steel materials, but also has the same shape, size and thickness as the first end plate 110 and the second end plate 120. The heat exchange coil 200 passes through the first end plate 110 and the second end plate 120 and is sinuously wound between the first end plate 110 and the second end plate 120. The heat exchange coil 200 has a heat exchange medium flowing through it. Optionally, the heat exchange coil 200 includes a plurality of straight tube sections 210 and a plurality of bent sections 220, wherein the straight tube sections 210 are located between the first end plate 110 and the second end plate 120, and the bent sections 220 are connected between the straight tube sections 210 adjacent in the length direction of the first end plate 110 or the second end plate 120, or the bent sections are connected between the straight tube sections 210 adjacent in the width direction of the first end plate 110 or the second end plate 120, thereby forming a serpentine heat exchange tube.

Alternatively, the plurality of heat exchange fins 300 are sleeved on the heat exchange coil 200 between the first end plate 110 and the second end plate 120 in parallel with each other, i.e. the plurality of heat exchange fins 300 are sleeved outside the straight tube section 210.

Optionally, the surface of the heat exchange fin 300 is coated with a hydrophobic coating to keep the surface of the heat exchange fin 300 dry and not wet, thereby improving defrosting efficiency. Further, the graphene coating is coated on the surface of the heat exchange fin 300, and has certain hydrophobicity and enhanced heat exchange capacity, so that defrosting speed is improved.

The principle of electromagnetic coil heating is to use electromagnetic induction eddy current. Induced currents also occur in the metal conductor when it is placed in an alternating magnetic field or is moved relative to the magnetic field. This current self-closes within the metal conductor, forming a vortex, and is therefore referred to as an eddy. The vortex flow, when flowing in the metal conductor, can release a great deal of heat energy. In addition, the electromagnetic heating ring does not generate heat, and is manufactured by adopting an insulating material and a high-temperature cable, so that the problem that the service life of the electric heating wire is shortened due to oxidation in a high-temperature state is solved, the service life is long, the temperature rising rate is high, the maintenance time can be reduced, and the cost is reduced.

Alternatively, the electromagnetic coil 400 is provided to the surfaces of the first and second end plates 110 and 120. When the electromagnetic coil 400 is energized and the applied current is an alternating current, the electromagnetic coil 400 can generate an alternating magnetic field, so that eddy currents are generated inside the first and second end plates 110 and 120 made of carbon steel and a large amount of heat is generated. On the one hand, the first end plate 110 and the second end plate 120 can be rapidly heated, and the heat of the first end plate 110 and the second end plate 120 can be transferred to the heat exchange coil 200 and the heat exchange fin 300 close to the first end plate 110 and the second end plate 120 through radiation heat transfer so as to melt the frost on the heat exchange coil 200 and/or the heat exchange fin 300; on the other hand, the heat energy generated by the electromagnetic coil 400 can radiate and conduct heat into the heat exchange coil 200 close to the first end plate 110 and the second end plate 120, so that the temperature of the heat exchange medium in the heat exchange coil is raised, and further, the heat exchange medium can transfer heat to the heat exchange fins and the heat exchange coils far from the first end plate and the second end plate through a heat conduction mode.

Optionally, the electromagnetic coil 400 can heat the heat exchange medium without contacting the heat exchange medium, so that the safety is high, and the sealing effect of the heat exchange medium is good.

By adopting the fin-tube heat exchanger provided by the embodiment of the disclosure, under the condition that the electromagnetic coil is electrified and alternating current is applied, the electromagnetic coil generates an alternating magnetic field, so that the interiors of the first end plate and the second end plate which are made of carbon steel generate vortex and emit heat. On the one hand, the first end plate and the second end plate can be heated, and energy on the first end plate and the second end plate can be transmitted to the heat exchange coil and the heat exchange fin close to the first end plate and the second end plate through radiation heat transfer; on the other hand, can radiate heat and conduction heat to the heat exchange coil that is close to first end plate and second end plate, make the heat transfer medium in the heat exchange coil intensify, and further, through the mode of heat conduction, the heat transfer medium can be with heat transfer to the heat transfer fin and keep away from on the heat exchange coil of first end plate and second end plate. Therefore, under the condition that the heat exchange coil and the heat exchange fins are made of aluminum or other materials, most of heat generated by the electromagnetic coil can act on the fin tube type heat exchanger in the defrosting process of the fin tube type heat exchanger provided by the embodiment of the disclosure, and heat loss is little, so that defrosting efficiency is improved, defrosting time is reduced, and energy utilization rate is improved.

As shown in connection with fig. 1, in some embodiments, the electromagnetic coil 400 is wound around the outer surfaces of the first end plate 110 and the second end plate 120.

As shown in fig. 3, alternatively, a plurality of through hole groups 130 are provided on each of the first and second end plates 110 and 120, which are spaced apart in the longitudinal direction of the first or second end plates 110 and 120. Wherein each of the through-hole groups 130 includes a plurality of through-holes 131 arranged at intervals in the width direction of the first end plate 110 or the second end plate 120. The plurality of through-hole sets 130 are provided for the heat exchange coil 200 to pass through, and the heat exchange coil 200 can pass through the through-holes 131 to bend back and forth between the first end plate 110 and the second end plate 120.

Alternatively, in order for the alternating magnetic field generated by the electromagnetic coil 400 to include the first end plate 110 and include the second end plate 120, the electromagnetic coil 400 is wound around the outer surfaces of the first end plate 110 and the second end plate 120, i.e., the electromagnetic coil 400 is wound around the surface of the first end plate 110 for a plurality of turns and around the surface of the second end plate 120 for a plurality of turns. In this way, the efficiency of the electromagnetic coil 400 for heating the heat transfer medium can be improved to improve the defrosting efficiency.

Optionally, in order to improve defrosting efficiency of the fin tube heat exchanger, coverage of radiant heat of the electromagnetic coil is improved, and a plurality of electromagnetic coils 400 are provided along a length direction of the first end plate 110 or the second end plate 120. Alternatively, the plurality of electromagnetic coils 400 may be connected to each other, i.e., connected in series, or may be provided separately, i.e., the plurality of electromagnetic coils 400 may be provided in parallel. Optionally, an electromagnetic coil 400 is disposed between the adjacent through hole groups 130 along the length direction of the first end plate 110 or the second end plate 120. Optionally, between the sets of through holes 130 adjacent in the length direction of the first end plate 110 or the second end plate 120.

The vertically placed fin tube heat exchanger, i.e. the fin tube heat exchanger in a use state, defines a central line of the fin tube heat exchanger, wherein a half of the height of the fin tube heat exchanger is defined, the central line is taken as a boundary, an upper part of the central line is an upper part of the fin tube heat exchanger, and a lower part of the central line is a lower part of the fin tube heat exchanger, wherein the central lines of the first end plate 110 and the second end plate 120 are on the same straight line with the fin tube heat exchanger.

Moisture in the air is first condensed into water droplets on the heat exchange fins 300 and then flows downward along the side wall surfaces of the heat exchange fins 300 by gravity. In case the ambient temperature is below 0 c, it condenses as a layer of frost. Therefore, the lower half of the fin heat exchanger may have more or thicker frost layer. Therefore, the electromagnetic coil 400 is disposed at the lower portion of the fin tube heat exchanger, and one electromagnetic coil 400 is disposed between the through hole groups 130 adjacent in the longitudinal direction of the first end plate 110 or the second end plate 120.

Alternatively, in order to enhance the defrosting effect of the upper portion of the fin tube heat exchanger, the electromagnetic coils 400 are arranged at intervals between the through-hole groups 130 adjacent in the length direction of the first end plate 110 or the second end plate 120. For example, the first end plate 110 is numbered from top to bottom, the uppermost through hole group 130 is a first group, the through hole groups 130 of the first group and the second group are sequentially increased, the electromagnetic coil 400 is arranged between the through hole groups 130 of the first group and the second group, the electromagnetic coil 400 is not arranged between the through hole groups 130 of the second group and the third group, and the electromagnetic coil 400 is arranged between the through hole groups 130 of the third group and the fourth group.

Optionally, the heat exchange coil 200 located below the electromagnetic coil 400 can also act as a stop for the electromagnetic coil 400, preventing the electromagnetic coil 400 from falling off the first end plate 110 or the second end plate 120.

As shown in connection with fig. 2, in some embodiments, the electromagnetic coil 400 includes electromagnetic wires wound in a first direction or a second direction to form a coil disk that is disposed against the outer surfaces of the first end plate 110 and the second end plate 120. In this way, the radiation range of the alternating magnetic field generated by the electromagnetic coil 400 can be increased.

Alternatively, the electromagnetic coil 400 may be wound around any one of the sets of through-holes 130 and around the heat exchange coil 200 passing through the set of through-holes 130.

In some embodiments, the outer surface of the electromagnetic coil 400 is coated with a hydrophobic coating. Thus, the surface of the electromagnetic coil can be kept dry and free from water, and frost is prevented from condensing on the surface.

In some embodiments, to prevent rusting corrosion of the electromagnetic coil 400, the outer surface of the electromagnetic coil 400 is provided with an anti-corrosion layer.

In some embodiments, to prevent rusting corrosion of the surfaces of the first end plate 110 and the second end plate 120, the outer surfaces of both the first end plate 110 and the second end plate 120 are coated with an anti-corrosion coating.

As shown in connection with fig. 4, in some embodiments, the heat exchange fin 300 includes a first side 310 and a second side 320 opposite to each other, and the first side 310 and/or the second side 320 are provided with water guiding grooves arranged in a vertical direction.

When moisture in the air condenses into water drops on the heat exchange fins 300, the contact area of the water guide grooves and the water drops is larger than that of the smooth plane heat exchange fins and the water drops, so that the water drops have good wall attachment fluidity, can smoothly flow along the water guide grooves under the action of gravity, guide condensed water to the heat exchange fins 300, and avoid the accumulation of condensed water on the heat exchange fins, so that the generation of frost layers can be reduced.

In some embodiments, where both the first side 310 and the second side 320 are provided with water guides, the water guides provided in the first side 310 and the water guides provided in the second side 320 are staggered. On the one hand, the water guide grooves formed in the first side surface 310 and the water guide grooves formed in the second side surface 320 are arranged in a staggered manner, so that the thickness of the heat exchange fins formed at the positions where the water guide grooves are formed due to the fact that the water guide grooves are arranged oppositely is prevented from being too thin, and the structural strength of the heat exchange fins is prevented from being weakened; on the other hand, the heat exchange fin 300 is easily manufactured. In addition, the condensed water drops accumulated in different water guide tanks are mutually separated, so that the condensed water drops are prevented from accumulating to form larger water drops, and the generation of an ice layer with a larger area is avoided.

As shown in connection with fig. 5, in some embodiments, heat exchange fin 300 includes first fins 330 and second fins 340 arranged in a spaced apart relationship, wherein the height of first fins 330 is less than the height of second fins 340.

Wherein the height of the first fin 330 refers to the linear distance of the edge of the first fin 330 perpendicular to the axis of the heat exchange coil 200, and the height of the second fin 340 refers to the linear distance of the edge of the second fin 340 perpendicular to the axis of the heat exchange coil 200. In this way, the distance between the edges of the two first fins 330 at the bottom of the fin-tube heat exchanger is larger, which is beneficial to the sliding down of the water drops on the heat exchange fin 300, so as to avoid the frost layer from being blocked between the adjacent first fins 330 and the second fins 340 as much as possible.

The embodiment of the disclosure provides refrigeration equipment, which comprises the fin-tube heat exchanger.

Alternatively, the refrigeration appliance includes a refrigerator, a freezer, or a cold and warm air conditioner.

The refrigeration equipment provided by the embodiment of the disclosure is provided with the fin-tube type heat exchanger. When the electromagnetic coil is electrified and alternating current is applied, the electromagnetic coil generates an alternating magnetic field, so that eddy currents are generated in the first end plate and the second end plate which are made of carbon steel and heat is generated. On the one hand, the first end plate and the second end plate can be heated, and energy on the first end plate and the second end plate can be transmitted to the heat exchange coil and the heat exchange fin close to the first end plate and the second end plate through radiation heat transfer; on the other hand, can radiate heat and conduction heat to the heat exchange coil that is close to first end plate and second end plate, make the heat transfer medium in the heat exchange coil intensify, and further, through the mode of heat conduction, the heat transfer medium can be with heat transfer to the heat transfer fin and keep away from on the heat exchange coil of first end plate and second end plate. Therefore, under the condition that the heat exchange coil and the heat exchange fins are made of aluminum or other materials, most of heat generated by the electromagnetic coil can act on the fin tube type heat exchanger in the defrosting process of the fin tube type heat exchanger provided by the embodiment of the disclosure, and heat loss is little, so that defrosting efficiency is improved, defrosting time is reduced, and energy utilization rate is improved.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A fin and tube heat exchanger, comprising:

the end plate assembly (100) comprises a first end plate (110) and a second end plate (120) which are identical in structure, wherein the first end plate (110) and the second end plate (120) are made of carbon steel;

a heat exchange coil (200), wherein the heat exchange coil (200) can pass through the first end plate (110) and the second end plate (120) and is coiled between the first end plate (110) and the second end plate (120);

a plurality of heat exchange fins (300) sleeved on the heat exchange coil (200) between the first end plate (110) and the second end plate (120);

and an electromagnetic coil (400) provided on the surfaces of the first end plate (110) and the second end plate (120).

2. The fin and tube heat exchanger of claim 1, wherein,

the electromagnetic coil (400) is wound around the outer surfaces of the first end plate (110) and the second end plate (120).

3. The fin and tube heat exchanger of claim 1, wherein,

the electromagnetic coil (400) comprises electromagnetic wires wound in a first direction or a second direction to form a coil disc, and the coil disc is attached to the outer surfaces of the first end plate (110) and the second end plate (120).

4. A fin tube heat exchanger according to any one of claims 1 to 3, wherein the outer surface of the electromagnetic coil (400) is coated with a hydrophobic coating.

5. A fin-tube heat exchanger according to any one of claims 1 to 3, wherein the outer surface of the electromagnetic coil (400) is provided with an anti-corrosion layer.

6. A fin tube heat exchanger according to any one of claims 1 to 3, wherein the outer surfaces of the first end plate (110) and the second end plate (120) are each coated with an anti-corrosion coating.

7. A fin and tube heat exchanger according to any one of claims 1 to 3, wherein the heat exchange fin (300) comprises opposite first (310) and second (320) sides, the first (310) and/or second (320) sides being provided with water guiding channels arranged in a vertical direction.

8. The fin-and-tube heat exchanger of claim 7, wherein, in the case where both the first side surface (310) and the second side surface (320) are provided with water guide grooves, the water guide grooves provided in the first side surface (310) and the water guide grooves provided in the second side surface (320) are staggered.

9. A fin and tube heat exchanger according to any one of claims 1 to 3, wherein the heat exchange fin (300) comprises first fins (330) and second fins (340) arranged at intervals, wherein the height of the first fins (330) is smaller than the height of the second fins (340).

10. A refrigeration apparatus comprising a finned tube heat exchanger as claimed in any one of claims 1 to 9.

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