WO2018145504A1

WO2018145504A1 - Finned evaporator and refrigeration equipment

Info

Publication number: WO2018145504A1
Application number: PCT/CN2017/113170
Authority: WO
Inventors: 谢良柱
Original assignee: 合肥美的电冰箱有限公司; 合肥华凌股份有限公司; 美的集团股份有限公司
Priority date: 2017-02-13
Filing date: 2017-11-27
Publication date: 2018-08-16
Also published as: CN106766397A

Abstract

A finned evaporator (20), comprising: an evaporating pipe, which comprises a plurality of evaporator straight pipes which are arranged side by side, adjacent evaporator straight pipes being connected therebetween by means of U-shaped pipes, and an evaporator straight pipe on the bottom layer being bent and then extending to the top to form an inlet (206) of the evaporating pipe; a plurality of first fins (208), sleevingly disposed on the evaporator straight pipes on the bottom layer, wherein any first fin (208) is provided with a pre-frosting structure (2082), and the pre-frosting structures (2082) are positioned below the sleeved evaporator straight pipes opposite thereto. A frost layer may be bound at a designated area, wind resistance is reduced, and thus operation stability of a system is improved.

Description

Finned evaporator and refrigeration equipment

The present application claims priority to Chinese Patent Application No. JP-A No. No. No. No. No. No. No. No. No. No. No. No. No. No. No. in.

Technical field

The present invention relates to the field of household appliances, and in particular to a finned evaporator and a refrigeration apparatus.

Background technique

In the related art, as shown in FIGS. 1 and 2, the evaporator is fabricated using conventional fins, and during cooling, the refrigerant flows out from the upper portion to the lower portion of the evaporation tube, and the air flows out from the lower portion of the evaporator to the upper side, and the evaporator in the related art is at least The following technical defects exist:

(1) The refrigerant enters from the top of the evaporation tube and flows from top to bottom along the evaporator straight tube to the bottom. The initial region 102 of the evaporation tube is at the top, is subjected to gravity, has small flow resistance, low heat exchange efficiency, and the evaporator is close to The refrigerant flow rate at the inlet end is fast, resulting in low heat exchange efficiency;

(2) The air flows out from the lower part of the evaporator to the upper part. The water vapor in the air forms a frost layer on the surface of the fin and the surface of the evaporation tube. The area of the main frosting area 104 of the evaporator is large, and the air resistance of the evaporation tube is large, and the working efficiency is lowered.

Summary of the invention

In order to solve at least one of the above technical problems, it is an object of the invention to provide a fin type evaporator.

Another object of the present invention is to provide a refrigeration apparatus.

In order to achieve the above object, an embodiment of the first aspect of the present invention provides a fin type evaporator comprising: an evaporation tube comprising a plurality of evaporator straight tubes arranged side by side, and an adjacent evaporator straight tube passing through U Pipe connection, one evaporator of the bottom layer is bent straight and extends to the top to form the evaporation tube The inlet; the plurality of first fins are sleeved on the lower evaporator straight tube, and any one of the first fins is provided with a pre-frozen structure, and the pre-frozen structure is disposed below the oppositely disposed evaporator straight tube.

In this technical solution, by directly extending the inlet of the evaporation tube vertically to the evaporator straight tube of the bottom layer, compared with the arrangement of the evaporation tube in the prior art, on the one hand, the flow direction of the refrigerant is changed to make the inside of the evaporator tube The refrigerant flows from bottom to top, which improves the heat exchange efficiency of the evaporator. On the other hand, the initial portion of the evaporation tube can be separated from the effective heat exchange area, thereby improving the utilization rate of the heat exchange area, and The plurality of first fins disposed on the bottom straight evaporator tube can seal the frost layer in a designated area, thereby reducing the wind resistance, thereby improving the stability of the system operation.

Among them, preferably, the fin-type evaporator is used for a refrigeration device such as a refrigerator, and the energy-saving effect of a refrigeration device such as a refrigerator is achieved by increasing the heat exchange efficiency of the evaporator.

Specifically, the first fin is provided with a pre-frozen structure. When cooling, the refrigerant flows out from the lower part of the evaporator to the upper part, is subjected to gravity, has large flow resistance, high heat exchange efficiency, and air flows out from the lower part of the evaporator to the first. The fins make the water vapor in the humid air below the evaporator, and the area without the evaporation tube, that is, the pre-frosting structure, performs pre-frosting, which reduces the frosting of the effective heat exchange portion of the evaporator, thereby reducing the wind resistance and improving the evaporator. System heat exchange efficiency.

In addition, the fin evaporator in the above embodiment provided by the present invention may further have the following additional technical features:

In the above technical solution, preferably, the plurality of first fins are sleeved on the bottommost evaporator straight tube.

In this technical solution, by setting a plurality of first fins on the bottommost evaporator straight tube, when the refrigerant enters the inlet of the evaporation tube and directly reaches the bottom layer, the frosting structure is added to increase the frosting. The area is such that the water vapor in the air directly pre-frosts on the first fin of the lowest layer, and under the premise of equal amount of water vapor, the pre-frosting structure improves the efficiency of frosting on the first fin, thereby reducing the efficiency. The frost in the effective heat exchange area of the evaporator further reduces the wind resistance and improves work efficiency.

In any of the above aspects, preferably, one evaporator straight pipe of the top layer is connected to the upwardly bent bending pipe, and the bending pipe has an outlet of the evaporation pipe.

In this technical solution, by directly extending the inlet of the evaporator to the evaporator straight pipe of the bottom layer, the evaporator inlet portion is placed at the lower portion for pre-frosting, and at the same time, at the end near the inlet. The upwardly convex bending tube is arranged to flow upward from the lower portion of the evaporation tube from the refrigerant, and the flow resistance is increased due to gravity, thereby improving the heat exchange efficiency.

In any of the above aspects, preferably, the first fin includes a rectangular fin, the pre-frozen structure is a trapezoidal sheet structure, and the trapezoidal sheet structure is disposed at a lower end of the rectangular fin.

In the technical solution, by setting the pre-frosting structure to a trapezoidal structure, the pre-frosting effect is enhanced, so that the water vapor in the humid air is well condensed in the vicinity of the pre-frosting structure of the trapezoidal structure, and the upper evaporator is reduced. The frosting of the straight pipe, thereby reducing the wind resistance, improves the heat exchange efficiency of the evaporator system.

In any of the above aspects, preferably, the first fin comprises a rectangular fin, the pre-frozen structure is at least one separated inverted triangular sheet structure, and the inverted triangular sheet structure is disposed at a lower end of the rectangular fin.

In this technical solution, the pre-frozen effect is enhanced by setting the pre-frozen structure to an inverted triangular structure, and at the same time, a sharp corner of the inverted triangular structure is disposed downward, so that the water vapor in the wet air is in an inverted triangular structure. The pre-frosting structure is well condensed nearby. In addition, a plurality of inverted triangular structures can be provided, which further reduces the frosting of the upper evaporator straight tube, thereby reducing the wind resistance and improving the heat exchange efficiency of the evaporator system.

In any of the above aspects, preferably, the method further includes: a plurality of second fins disposed on the evaporator straight tube where the first fin is not disposed.

In the technical solution, the upper evaporator straight tube plays a good heat exchange function, and the plurality of second fins are arranged on the straight tube of the evaporator outside the bottom layer, thereby further improving the heat exchange efficiency of the evaporator and enhancing the heat transfer efficiency. Product performance.

In any of the above aspects, preferably, any one of the first fins and any one of the second fins are disposed directly in the straight tube, and the spacing between the adjacent two first fins is greater than the adjacent two The spacing between the two fins.

In this technical solution, by making any one of the first fins and any one of the second fins perpendicular to the straight tube of the evaporator, when the water vapor flows from bottom to top, a vertical airflow orbit is formed to reduce condensation of water vapor on the fins. The probability reduces the frosting condition, thereby improving the heat exchange efficiency of the evaporator, and at the same time, the spacing between the adjacent two first fins is greater than the spacing between the adjacent two second fins, so that the bottom layer is sleeved on the bottom layer The first fins on the straight tube of the evaporator are more likely to be frosted, and the frost layer is concentrated in the first A pre-frosting structure of the fins further increases the heat exchange efficiency of the upper evaporator straight tube.

In any of the above aspects, preferably, the first fin and the second fin are at least one of an aluminum alloy member, a copper member, and a stainless steel member.

In any of the above aspects, preferably, the bottom of the evaporation tube is provided with an air inlet, and the top of the evaporation tube is provided with an air outlet.

In the technical solution, by providing an air inlet at the bottom of the evaporation tube and an air outlet at the top of the evaporation tube, the air flows from the bottom to the top, and the plurality of first fins are arranged to reduce the upper evaporator straight tube. The frosting condition, in turn, reduces the wind resistance and improves the heat exchange efficiency of the evaporator system.

In addition, a duct grille may be provided to guide the airflow to flow from the lower portion of the evaporator to the upper portion, and the first fin is used to make the water vapor in the humid air below the evaporator, and the region without the evaporation tube, that is, the pre-knot The frost structure is pre-frosted, which reduces the frosting of the upper evaporator straight tube, thereby reducing the wind resistance and improving the heat exchange efficiency of the evaporator system.

In the above technical solution, preferably, the evaporation tube comprises at least one row and at least three layers, and a spacing between the evaporator straight tube at the bottom layer and the evaporator straight tube of the adjacent upper layer is greater than the evaporation at other adjacent layers. The spacing between the straight tubes.

In the technical solution, by increasing the distance between the straight pipe of the bottom evaporator and the straight pipe of the upper evaporator, the flow resistance is further improved, the heat exchange efficiency is improved, and at the same time, the frost is knotted in the designated pre-frosting structure. The frosting of the effective heat exchange portion of the evaporator is reduced, thereby reducing the wind resistance, and further improving the heat exchange efficiency of the evaporator.

Wherein, preferably, the evaporator comprises three rows and six layers of evaporator straight tubes, the bottommost evaporator straight tube adopts any one of the first fins, and the above five layers of evaporator straight tubes adopt conventional fins, and the evaporator tubes are The inlet directly extends to the bottommost evaporator straight tube, and the distance between the bottommost evaporator straight tube and the evaporator straight tube of the upper layer is greater than the upper and lower distance between the straight tubes of the above five layers of evaporators. A better pre-frosting function is achieved, so that the frost is bonded to the pre-frosting structure of any one of the first fins, thereby improving the heat exchange efficiency of the evaporator and enhancing the performance of the product.

An embodiment of the second aspect of the present invention provides a refrigeration apparatus comprising the finned evaporator provided by any one of the first aspects of the present invention.

In the technical solution, any one of the first fins is provided with a pre-frozen structure. When cooling, the refrigerant flows out from the lower part of the evaporator to the upper part, is subjected to gravity, has large flow resistance, high heat exchange efficiency, and air is steamed. The lower part of the hair is discharged upwards, and the first fin is used to make the water vapor in the humid air under the evaporator, and the area without the evaporation tube, that is, the pre-frosting structure is pre-frost, which reduces the frosting of the upper evaporator straight tube. The situation, in turn, reduces the wind resistance, improves the heat exchange efficiency of the evaporator system, further enhances the practicability of the refrigeration equipment, improves the quality of the refrigeration equipment, and provides a good user experience.

Additional aspects and advantages of the invention will be apparent from the description of the invention.

DRAWINGS

Figure 1 shows a schematic front view of a finned evaporator circuit of one embodiment of the related art;

Figure 2 shows a schematic left side view of the finned evaporator of Figure 1;

Figure 3 shows a schematic front view of a finned evaporator circuit in accordance with one embodiment of the present invention;

Figure 4 shows a schematic left side view of the finned evaporator of Figure 3;

Figure 5 is a schematic view showing the structure of a first fin according to an embodiment of the present invention;

Figure 6 shows a schematic view of the structure of a second fin in accordance with one embodiment of the present invention.

Wherein, the correspondence between the reference numerals and the component names in FIGS. 1 to 6 is:

102 evaporation tube initial area, 104 evaporator main frosting area, 20 finned evaporator, 202 evaporation tube initial area, 204 evaporator main frosting area, 206 evaporation tube inlet, 208 first fin, 2082 pre-knot Frost structure, 210 outlet of the evaporation tube, 212 second fin.

detailed description

The present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to facilitate a full understanding of the invention, but the invention may be practiced in other embodiments than described herein. Limitations of the embodiments.

The fin type evaporator according to the embodiment of the present invention will be specifically described below with reference to FIGS. 3 to 6. Description.

As shown in FIG. 3 and FIG. 4, an embodiment of the first aspect of the present invention provides a finned evaporator 20, comprising: an evaporation tube comprising a plurality of evaporator straight tubes arranged side by side, adjacent evaporators are straight The tubes are connected by U-tubes, and one evaporator of the bottom layer is bent and extended to the top to form an inlet 206 of the evaporation tube; a plurality of first fins 208 are sleeved on the lower evaporator tube, any one The first fin 208 is provided with a pre-frozen structure 2082, and the pre-frozen structure 2082 is disposed below the oppositely disposed evaporator straight tube.

As shown in FIG. 3, in this embodiment, by directly extending the inlet 206 of the evaporation tube vertically to the evaporator straight tube of the bottom layer, compared with the arrangement of the evaporation tube in the prior art, on the one hand, the refrigerant is changed. In the flow direction, the initial region 202 of the evaporation tube is at the bottom of the evaporator, so that the refrigerant in the evaporator tube flows from bottom to top, which improves the heat exchange efficiency of the evaporator. On the other hand, the initial region 202 of the evaporation tube can be effectively exchanged. Separation treatment in the hot area improves the utilization of the heat exchange area. In addition, by fitting a plurality of first fins 208 sleeved on the bottom evaporator tube, the frost layer can be knotted in a designated area, the evaporator The main frosting area 204 is mainly concentrated on the pre-frozen structure 2082, which reduces the wind resistance, thereby improving the stability of the system operation.

Among them, preferably, the fin-type evaporator 20 is used for a refrigeration device such as a refrigerator, and the energy-saving effect of a refrigeration device such as a refrigerator is achieved by increasing the heat exchange efficiency of the evaporator.

Specifically, the first fin 208 is provided with a pre-frozen structure 2082. When cooling, the refrigerant flows out from the lower portion of the evaporator to the upper portion, is subjected to gravity, has large flow resistance, high heat exchange efficiency, and air flows out from the lower portion of the evaporator to the upper portion. Cooperating with the first fin 208, the water vapor in the humid air is below the evaporator, and the area without the evaporation tube, that is, the pre-frosting structure 2082, performs pre-frosting, which reduces the frosting of the effective heat exchange portion of the evaporator, thereby reducing Wind resistance, improve the heat transfer efficiency of the evaporator system.

In addition, the fin evaporator 20 in the above embodiment provided by the present invention may further have the following additional technical features:

As shown in FIG. 3 and FIG. 4, in the above technical solution, preferably, the plurality of first fins 208 are sleeved on the bottommost evaporator straight tube.

In this embodiment, by placing a plurality of first fins 208 on the bottommost evaporator straight tube, when the refrigerant enters the inlet 206 of the evaporation tube directly to the lowest level, by providing the pre-frozen structure 2082 Increasing the frosting area so that the water vapor in the air is straight on the first layer 208 of the lowest layer Pre-frosting is carried out to increase the frosting efficiency on the first fin 208 through the pre-frozen structure 2082 under the premise of equal amount of water vapor, thereby reducing the frosting in the effective heat exchange area of the evaporator and further reducing Wind resistance, improve work efficiency.

As shown in FIG. 3, in any of the above embodiments, preferably, one evaporator straight pipe of the top layer is connected to the upwardly bent bending pipe, and the bending pipe has an outlet 210 of the evaporation pipe.

In this embodiment, by extending the inlet of the evaporator directly to the evaporator straight tube of the bottom layer, the evaporator inlet portion is placed in the lower portion for pre-frosting, and at the same time, an upwardly convex fold is provided at one end near the inlet. The elbow is realized to flow upward from the lower portion of the evaporation tube from the refrigerant, and the flow resistance is increased due to gravity, thereby improving the heat exchange efficiency.

Pre-frozen structures include, but are not limited to, the following settings:

Embodiment 1:

As shown in FIG. 3 and FIG. 5, in any one of the above aspects, preferably, the first fin 208 includes a rectangular fin, the pre-frosting structure 2082 is a trapezoidal sheet structure, and the trapezoidal sheet structure is disposed on the rectangular wing. The lower end of the piece.

In this embodiment, by setting the pre-frozen structure 2082 to a trapezoidal structure, the pre-frosting effect is enhanced, so that the moisture in the moist air is well condensed in the vicinity of the trapezoidal structure pre-frozen structure 2082, reducing the upper layer. The frosting of the straight tube of the evaporator, thereby reducing the wind resistance, improves the heat exchange efficiency of the evaporator system.

Embodiment 2:

In any of the above aspects, preferably, the first fin 208 includes rectangular fins, and the pre-frozen structure 2082 is at least one separated inverted triangular sheet structure, and the inverted triangular sheet structure is disposed on the rectangular fin Lower end.

In this embodiment, by setting the pre-frozen structure 2082 to an inverted triangular structure, the pre-frosting effect is enhanced, and at the same time, a sharp corner of the inverted triangular structure is disposed downward, so that the water vapor in the wet air is in an inverted triangular structure. The pre-frosting structure 2082 is well condensed nearby. In addition, a plurality of inverted triangular structures can be arranged to further reduce the frosting of the upper evaporator straight tube, thereby reducing the wind resistance and improving the heat exchange efficiency of the evaporator system. .

As shown in FIG. 3 and FIG. 6 , in any one of the above aspects, preferably, the method further includes: a plurality of second fins 212 disposed on the evaporator straight tube where the first fins 208 are not disposed.

In this embodiment, the upper evaporator straight tube plays a good heat exchange function, and the plurality of second fins 212 are disposed on the straight tube of the evaporator outside the bottom layer, thereby further improving the heat exchange efficiency of the evaporator and enhancing The performance of the product.

In any of the above aspects, preferably, any one of the first fins 208 and any one of the second fins 212 are disposed perpendicular to the evaporator straight tube, and the spacing between the adjacent two first fins 208 is greater than the adjacent The spacing between the two second fins 212.

In this embodiment, by making any one of the first fins 208 and any one of the second fins 212 perpendicular to the straight tube of the evaporator, when the water vapor flows from bottom to top, a vertical airflow orbit is formed to reduce condensation of the water vapor in the fins. The on-chip probability reduces the frosting condition, thereby improving the heat exchange efficiency of the evaporator, and at the same time, the spacing between adjacent two first fins 208 is greater than the spacing between adjacent two second fins 212, The plurality of first fins 208 disposed on the bottom evaporator tube are more likely to be frosted, and the frost layer is concentrated on the pre-frozen structure 2082 of the first fin 208, thereby improving the heat exchange of the upper evaporator straight tube. effectiveness.

In any of the above aspects, preferably, the first fin 208 and the second fin 212 are at least one of an aluminum alloy member, a copper member, and a stainless steel member.

In this embodiment, by providing an air inlet at the bottom of the evaporation tube and an air outlet at the top of the evaporation tube, air is allowed to flow from the bottom to the top, and the plurality of first fins 208 are disposed to reduce the upper evaporator. The frosting of the tube, thereby reducing the wind resistance and improving the heat exchange efficiency of the evaporator system.

In addition, a duct grille may be provided to guide the airflow to flow from the lower portion of the evaporator to the upper portion, and the first fin 208 is matched to make the water vapor in the humid air below the evaporator, and the region without the evaporation tube, that is, The frosting structure 2082 performs pre-frosting, which reduces the frosting of the upper evaporator straight tube, thereby reducing the wind resistance and improving the heat exchange efficiency of the evaporator system.

In this embodiment, by increasing the distance between the straight tube of the bottom evaporator and the straight tube of the evaporator above it, the flow resistance is further increased, the heat exchange efficiency is improved, and at the same time, the frost knot is specified in the pre-frosting The structure 2082 reduces the frosting of the effective heat exchange portion of the evaporator, thereby reducing the wind resistance and further improving the heat exchange efficiency of the evaporator.

Wherein, preferably, the evaporator comprises three rows and six layers of evaporator straight tubes, and the bottommost evaporator straight tube adopts any one of the first fins 208, and the above five layers of evaporator straight tubes adopt conventional fins, evaporator tubes The inlet directly extends to the bottommost evaporator straight tube, and the distance between the bottommost evaporator straight tube and the evaporator straight tube above it is greater than the upper and lower distance between the above five layers of evaporator straight tubes, through the above scheme A better pre-frosting function is achieved, so that the frost is bonded to the pre-frozen structure 2082 of any one of the first fins 208, thereby improving the heat exchange efficiency of the evaporator and enhancing the performance of the product.

In this embodiment, any one of the first fins is provided with a pre-frozen structure. When cooling, the refrigerant flows out from the lower portion of the evaporator to the upper portion, is subjected to gravity, has large flow resistance, high heat exchange efficiency, and air from the lower portion to the upper portion of the evaporator. Outflow, with the first fin, the water vapor in the humid air is below the evaporator, and the area without the evaporation tube, that is, the pre-frosting structure is pre-frosted, which reduces the frosting of the upper evaporator straight tube, and then reduces The small wind resistance improves the heat exchange efficiency of the evaporator system, further enhances the practicability of the refrigeration equipment, improves the quality of the refrigeration equipment, and brings a good user experience.

In the present invention, the terms "first", "second", and "third" are used for the purpose of description only, and are not to be construed as indicating or implying relative importance; the term "plurality" means two or two. Above, unless otherwise explicitly defined. The terms "installation", "connected", "connected", "fixed" and the like should be understood broadly. For example, "connecting" may be a fixed connection, a detachable connection, or an integral connection; "connected" may They are directly connected or indirectly connected through an intermediary. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the description of the present invention, it is to be understood that the orientation or positional relationship of the terms "upper", "lower", "left", "right", "front", "rear", etc. is based on the orientation shown in the drawings. Or, the positional relationship is merely for the convenience of the description of the present invention and the simplification of the description, and is not intended to indicate or imply that the device or unit referred to has a specific orientation, is constructed and operated in a specific orientation, and thus is not to be construed as limiting the invention.

In the description of the present specification, the description of the terms "one embodiment", "an embodiment", "a"," In at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

A finned evaporator characterized by comprising:

The evaporation tube comprises a plurality of evaporator straight tubes arranged side by side, the adjacent straight tubes of the evaporator are connected by a U-shaped tube, and one of the evaporator tubes of the bottom layer is bent and extended to the top to form the evaporation. Entrance to the pipe;

a plurality of first fins disposed on the lower straight tube of the evaporator, and any one of the first fins is provided with a pre-frozen structure, the pre-frozen structure is relatively straight with respect to the set of evaporators The tube is set below.
A finned evaporator according to claim 1, wherein

The plurality of first fins are sleeved on the bottommost evaporator straight tube.
A finned evaporator according to claim 1, wherein

One of the evaporator straight tubes of the top layer is connected to an upwardly bent bend tube, the bend tube having an outlet of the evaporation tube.
A finned evaporator according to claim 1, wherein

The first fin includes a rectangular fin, the pre-frozen structure is a trapezoidal sheet structure, and the trapezoidal sheet structure is disposed at a lower end of the rectangular fin.
A finned evaporator according to claim 1, wherein

The first fin includes rectangular fins, and the pre-frozen structure is at least one separated inverted triangular sheet-like structure, and the inverted triangular sheet-like structure is disposed at a lower end of the rectangular fin.
A finned evaporator according to any one of claims 1 to 5, further comprising:

A plurality of second fins are sleeved on the evaporator straight tube where the first fin is not disposed.
A finned evaporator according to claim 6, wherein

Arranging any one of the first fins and any one of the second fins perpendicularly to the evaporator straight tube, and a spacing between two adjacent first fins is greater than two adjacent second fins The spacing between the pieces.
A finned evaporator according to claim 6, wherein

The first fin and the second fin are at least one of an aluminum alloy member, a copper member, and a stainless steel member.
A finned evaporator according to any one of claims 1 to 8, wherein

The bottom of the evaporation tube is provided with an air inlet, and the top of the evaporation tube is provided with an air outlet.
A fin type evaporator according to any one of claims 1 to 9, wherein

The evaporation tube comprises at least one row and at least three layers, and a spacing between the evaporator straight tube at the bottom layer and the evaporator straight tube of an adjacent upper layer is greater than the evaporator at other adjacent layers The spacing between straight tubes.
A refrigeration device, comprising:

A fin type evaporator according to any one of claims 1 to 10.