CN220206106U - Evaporator, refrigerating device and refrigerating equipment - Google Patents

Abstract

The utility model relates to the technical field of refrigeration, and provides an evaporator, a refrigeration device and refrigeration equipment. The evaporator comprises an evaporation tube and a heat exchange assembly, the heat exchange assembly comprises a plurality of heat exchange pieces which are arranged on the evaporation tube at intervals, the length direction of each heat exchange piece is the same as the flow direction of the air flow or forms an acute angle with the flow direction of the air flow, and the distance between two adjacent heat exchange pieces at the first end is smaller than the distance between two adjacent heat exchange pieces at the second end. By enabling the distance between two adjacent heat exchange pieces at the first end of the evaporator to be smaller than the distance between two adjacent heat exchange pieces at the second end, on the premise that the first end of the evaporator has a larger heat exchange area, defrosting water at the second end of the evaporator flows out smoothly, the defrosting water is prevented from accumulating between two fins at the second end, cooling efficiency is affected, frost blockage is caused, defrosting time of the evaporator is effectively shortened, and temperature in a box exceeds required temperature due to defrosting.

Description

Evaporator, refrigerating device and refrigerating equipment

Technical Field

The present utility model relates to the field of refrigeration technologies, and in particular, to an evaporator, a refrigeration apparatus, and a refrigeration device.

Background

In the related art, the densities of the upper end and the lower end of the distribution of the fins of the evaporator are the same, and the large density of the fins causes the accumulation of defrosting water in the middle of the fins, which is not beneficial to discharge, and the accumulation of frosting, longer and longer defrosting time and even frost blockage occur; the heat exchange area is reduced due to the small fin density, and the heat exchange efficiency is reduced. For the evaporators with high upper end density and low lower end density, the evaporators are only suitable for the conditions that the return air temperature is low and the lower end is easy to frost; for the condition that the return air temperature is high, the upper end of the evaporator is not easy to defrost, and the method is not applicable.

For the medical refrigerator with lower return air, the temperature in the refrigerator is 2-8 ℃, the temperature of the evaporator is 15 ℃ below zero to 10 ℃ below zero, and air blows through the fin evaporator from bottom to top, so that the frost at the lower end of the evaporator can be melted by hot air with the temperature higher than 0 ℃, but the frost at the upper end of the evaporator needs additional defrosting time. Medical freezers do not allow the temperature inside the box to exceed 8 ℃, so the defrosting time cannot be too long.

Disclosure of Invention

The present utility model is directed to solving at least one of the technical problems existing in the related art. Therefore, the utility model provides the evaporator, which effectively shortens the defrosting time of the evaporator and prevents the temperature in the tank from exceeding the required temperature due to defrosting.

The utility model also provides a refrigerating device.

The utility model also provides refrigeration equipment.

An evaporator according to an embodiment of the first aspect of the utility model has a first end and a second end in a flow direction of an air flow, comprising:

an evaporation tube;

the heat exchange assembly comprises a plurality of heat exchange pieces arranged at intervals on the evaporation tube, the length direction of each heat exchange piece is the same as the flow direction of the air flow or forms an acute angle with the flow direction of the air flow, and the distance between two adjacent heat exchange pieces at the first end is smaller than the distance between two adjacent heat exchange pieces at the second end.

According to the evaporator provided by the embodiment of the utility model, the distance between the two adjacent heat exchange pieces at the first end of the evaporator is smaller than the distance between the two adjacent heat exchange pieces at the second end of the evaporator, so that the defrosting water at the second end of the evaporator smoothly flows out on the premise of ensuring that the first end of the evaporator has a larger heat exchange area, the defrosting water is prevented from accumulating between the two fins at the second end, the cooling efficiency is influenced, the frost blockage is caused, the defrosting time of the evaporator is effectively shortened, and the temperature in a box exceeds the required temperature due to defrosting; in addition, the density of the heat exchange piece at the second end is reduced, the wind resistance brought by the heat exchange piece can be reduced, and the wind quantity is improved.

According to one embodiment of the utility model, the evaporator comprises a plurality of heat exchange assemblies, the plurality of heat exchange assemblies are arranged in a plurality of rows along the flow direction of the airflow, the distance between two adjacent heat exchange pieces of at least one heat exchange assembly is larger than or equal to a preset value, and the distance between two adjacent heat exchange pieces of the rest heat exchange assemblies is smaller than the preset value.

According to one embodiment of the utility model, the preset value is 8mm.

According to one embodiment of the utility model, the evaporator comprises a plurality of first heat exchange assemblies and a plurality of second heat exchange assemblies, wherein the distance between two adjacent heat exchange pieces of the first heat exchange assemblies is smaller than the preset value, and the distance between two adjacent heat exchange pieces of the second heat exchange assemblies is larger than the preset value.

According to one embodiment of the utility model, the heat exchanging elements of two adjacent second heat exchanging assemblies are arranged in a staggered manner.

According to one embodiment of the utility model, the number of second heat exchange assemblies is less than or equal to 3/4 of the total number of heat exchange assemblies.

According to one embodiment of the utility model, the heat exchange assembly comprises a plurality of heat exchange pieces with a first preset length and a plurality of heat exchange pieces with a second preset length, and at least one heat exchange piece with a second preset length is arranged between two adjacent heat exchange pieces with the first preset length, wherein the first preset length is larger than the second preset length.

According to one embodiment of the utility model, the second predetermined length is 1/4 to 3/4 of the first predetermined length.

According to one embodiment of the utility model, the evaporation tube comprises:

the evaporation pipe units are arranged at intervals along the flowing direction of the airflow, and the evaporation pipe units are sequentially connected end to end.

According to one embodiment of the utility model, the heat exchange member is provided with a through hole, and the heat exchange member is sleeved on the corresponding evaporation tube unit through the through hole; the edge of the through hole is provided with an annular convex edge extending along the thickness direction of the heat exchange piece, and the annular convex edge is attached to the outer peripheral wall of the evaporation tube unit.

According to one embodiment of the present utility model, further comprising:

and the bracket is arranged on at least one side of the heat exchange assembly and is connected with the evaporation tube.

A refrigeration unit according to an embodiment of the second aspect of the present utility model includes a compressor, a condenser, and an evaporator of any of the above, the compressor, the condenser, and the evaporator being in fluid communication.

According to the embodiment of the third aspect of the utility model, the refrigeration equipment comprises a refrigeration equipment body and any one of the evaporators, wherein a compartment is arranged in the refrigeration equipment body, an air duct is formed in the side wall of the compartment, an air inlet and an air outlet which are communicated with the air duct are formed in the side wall of the compartment, and the evaporators are arranged in the air duct.

According to one embodiment of the utility model, an evaporator cover plate is arranged in the air channel to divide the air channel into an air inlet channel and an air outlet channel communicated with the air inlet channel; the lower end of the air inlet duct is communicated with the air inlet, the upper end of the air inlet duct is communicated with the air outlet duct, the air outlet duct is communicated with the air outlet, and the evaporator is positioned in the air inlet duct.

The above technical solutions in the embodiments of the present utility model have at least one of the following technical effects:

according to the evaporator provided by the embodiment of the utility model, the distance between the two adjacent heat exchange pieces at the first end of the evaporator is smaller than the distance between the two adjacent heat exchange pieces at the second end of the evaporator, so that the defrosting water at the second end of the evaporator smoothly flows out on the premise of ensuring that the first end of the evaporator has a larger heat exchange area, the defrosting water is prevented from accumulating between the two fins at the second end, the cooling efficiency is influenced, the frost blockage is caused, the defrosting time of the evaporator is effectively shortened, and the temperature in a box exceeds the required temperature due to defrosting; in addition, the density of the heat exchange piece at the second end is reduced, the wind resistance brought by the heat exchange piece can be reduced, and the wind quantity is improved.

Further, by using the evaporator, the refrigerating efficiency of the refrigerating equipment is effectively improved, the defrosting time of the refrigerating equipment is shortened, the user experience is improved, and the product competitiveness is enhanced.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic view of an evaporator according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a second embodiment of an evaporator;

fig. 3 is a schematic side sectional structure of a refrigeration apparatus according to an embodiment of the present utility model;

fig. 4 is a schematic diagram of a front view cross-section structure of a refrigeration apparatus according to an embodiment of the present utility model.

Reference numerals:

100. an evaporation tube; 110. an evaporation tube unit; 200. a heat exchange assembly; 201. a heat exchange member; 210. a first heat exchange assembly; 220. a second heat exchange assembly; 300. a bracket; 400. a refrigeration equipment body; 410. a compartment; 420. an air inlet; 430. an air outlet; 440. an evaporator cover plate; 450. an air inlet duct; 460. and an air outlet duct.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Fig. 2 illustrates a second schematic structural diagram of an evaporator according to an embodiment of the present utility model, as shown in fig. 2, the evaporator has a first end and a second end along a flow direction of an air flow (i.e., a direction indicated by an arrow in fig. 1), the evaporator includes an evaporation tube 100 and a heat exchange assembly 200, the heat exchange assembly 200 includes a plurality of heat exchange members 201 disposed at intervals on the evaporation tube 100, a length direction of the heat exchange members 201 is the same as or forms an acute angle with the flow direction of the air flow, and a distance between two adjacent heat exchange members 201 at the first end is smaller than a distance between two adjacent heat exchange members 201 at the second end.

According to the evaporator provided by the embodiment of the utility model, the distance between the two adjacent heat exchange pieces 201 at the first end of the evaporator is smaller than the distance between the two adjacent heat exchange pieces 201 at the second end, so that the defrosting water at the second end of the evaporator flows out smoothly on the premise of ensuring that the first end of the evaporator has a larger heat exchange area, the defrosting water is prevented from accumulating between the two fins at the second end, the cooling efficiency is influenced, the frost blockage is caused, the defrosting time of the evaporator is effectively shortened, and the temperature in a box exceeds the required temperature due to defrosting; in addition, the density of the heat exchange piece 201 at the second end is reduced, the wind resistance brought by the heat exchange piece 201 can be reduced, and the wind quantity is improved.

It is understood that the included angle between the length direction of the heat exchange member 201 and the flowing direction of the air flow may be zero degrees or acute, and when the included angle between the length direction of the heat exchange member 201 and the flowing direction of the air flow is zero degrees, the heat exchange efficiency between the evaporator and the air flow is the highest.

It can be understood that, as shown in fig. 2, the heat exchange member 201 adopts a sheet structure, that is, the heat exchange member 201 is in the form of fins, and the heat exchange member 201 is made of metal copper, metal aluminum, aluminum alloy or other metal materials with good heat dissipation performance. The length direction of the heat exchange member 201 is the flow direction of the air flow, i.e., the up-down direction in fig. 1, the thickness direction of the heat exchange member 201 is the left-right direction in fig. 1, and the width direction of the heat exchange member 201 is the front-back direction in fig. 1.

It will be appreciated that, as shown in fig. 2, the evaporator includes a plurality of heat exchange assemblies 200, where the plurality of heat exchange assemblies 200 are arranged in a plurality of rows along the flow direction of the air flow, that is, the plurality of heat exchange assemblies 200 are arranged in a plurality of rows along the up-down direction in fig. 2, and the heat exchange assemblies 200 extend in the left-right direction in fig. 2, and the distances between two adjacent heat exchange assemblies 200 may be the same or different. In this embodiment, the lengths of the heat exchange members 201 of each heat exchange assembly 200 are the same, and the use of the heat exchange members 201 with the same size can simplify the assembly process of the evaporator and reduce the production cost of the evaporator. Of course, the dimensions of the heat exchange members 201 may be all different or partially the same, for example, the length of the heat exchange member 201 at the first end is longer than that of the heat exchange member 201 at the second end, so that the heat exchange member 201 at the first end has a larger heat exchange surface than that of the heat exchange member 201 at the second end, which can further improve the heat exchange efficiency of the evaporator.

The distance between two adjacent heat exchange members 201 of at least one heat exchange assembly 200 is greater than or equal to a preset value, and the heat exchange assembly 200 with the distance between two adjacent heat exchange members 201 greater than or equal to the preset value is located at the second end of the evaporator. The distance between two adjacent heat exchange members 201 of the remaining heat exchange assembly 200 is less than a preset value, and the heat exchange assembly 200 having the distance between two adjacent heat exchange members 201 less than the preset value includes all heat exchange assemblies 200 at the first end of the evaporator and also includes a part of the heat exchange assemblies 200 at the second end of the evaporator.

As shown in fig. 2, the distance between two adjacent heat exchange pieces 201 of the heat exchange assembly 200 at the upper end of the evaporator is greater than or equal to the preset value, the distance between two adjacent heat exchange pieces 201 is greater, smooth discharge of defrosting water can be ensured, wind resistance caused by the heat exchange pieces 201 can be reduced, the air quantity in the air duct is increased, and the refrigerating effect of the refrigerating device is enhanced.

It can be understood that, as shown in fig. 2, the preset value is 8mm in this embodiment, by making the distance between two adjacent heat exchange members 201 greater than 8mm, the distance between two heat exchange members 201 is greater, so that the defrosting water cannot be adsorbed between two adjacent heat exchange members 201 and can only be adsorbed on one heat exchange member 201, and thus, as the surface tension of the defrosting water is reduced, the defrosting water cannot be adsorbed on the heat exchange member 201 through the surface tension, and can only flow downwards along the heat exchange member 201, so that the defrosting water is smoothly discharged, the defrosting time of the evaporator is effectively shortened, and the temperature in the tank is prevented from exceeding the required temperature due to defrosting. Especially for medical fridge, the time requirement of defrosting can not be too long, and the time of defrosting overlength can lead to the inside temperature of compartment to surpass 8 ℃, leads to the inside medicine inefficacy of compartment. Therefore, by adopting the evaporator provided by the utility model, the defrosting time of the evaporator is effectively shortened, and the temperature in the compartment is prevented from exceeding the temperature requirement.

It will be appreciated that, as shown in fig. 2, the evaporator includes a plurality of first heat exchange assemblies 210 and a plurality of second heat exchange assemblies 220, the distance between two adjacent heat exchange members 201 of the first heat exchange assemblies 210 is smaller than a preset value, the first heat exchange assemblies 210 are located at a first end of the evaporator, and the distances between two adjacent first heat exchange assemblies 210 are equal. The greater the number of first heat exchange assemblies 210, the better the heat exchange performance of the evaporator and the higher the heat exchange efficiency. The distance between two adjacent heat exchange pieces 201 of the second heat exchange assembly 220 is greater than a preset value, the second heat exchange assembly 220 is located at the second end of the evaporator, and the distances between two adjacent second heat exchange assemblies 220 are equal. The greater the number of second heat exchange assemblies 220, the shorter the defrosting time of the evaporator.

It will be appreciated that the distances between two adjacent heat exchange members 201 of the second heat exchange assemblies 220 are equal, and the heat exchange members 201 of two adjacent second heat exchange assemblies 220 are arranged in a staggered manner, in which case, the gaps between the heat exchange member 201 of the previous second heat exchange assembly 220 and the two adjacent heat exchange members 201 of the next second heat exchange assembly 220 correspond one to one, that is, the extension lines of the heat exchange members 201 of the previous second heat exchange assembly 220 pass through the gaps between the two adjacent heat exchange members 201 of the next second heat exchange assembly 220. Through the staggered arrangement of the heat exchange pieces 201 of the two adjacent second heat exchange assemblies 220, when the defrosting water on the surface of the upper heat exchange piece 201 flows downwards, the defrosting water on the upper part flows into the gap between the two adjacent heat exchange pieces 201 of the lower second heat exchange assembly 220, and cannot contact with the lower heat exchange piece 201, and directly falls downwards, so that the defrosting water at the second end of the evaporator flows out smoothly, and the defrosting water is prevented from accumulating between the two heat exchange pieces 201 at the second end.

It will be appreciated that, as shown in fig. 2, the distance between two adjacent heat exchange members 201 of the first heat exchange assembly 210 is smaller than a preset value, the distance between two adjacent heat exchange members 201 of the first heat exchange assembly 210 is equal, the distance between two adjacent heat exchange members 201 is 4mm-8mm, and the distance between two adjacent heat exchange members 201 in this embodiment is 5mm. The number of heat exchanging pieces of the adjacent second heat exchanging assemblies 220 is the same, and the heat exchanging pieces 201 of the adjacent second heat exchanging assemblies 220 are in one-to-one correspondence and in the same plane.

It can be understood that the heat exchange members 201 of the first heat exchange assembly 210 and the heat exchange members 201 of the second heat exchange assembly 220 are both rectangular sheet structures, and in order to increase the heat exchange area of the heat exchange members 201, the heat exchange members 201 may be curved surfaces or wavy surfaces, so that the heat exchange members have larger heat dissipation surfaces and the heat exchange rate of the evaporator is improved under the condition that the lengths of the heat exchange members are the same.

It can be appreciated that the surface of the heat exchange member 201 is provided with protrusions, recesses or ribs at intervals to increase the heat dissipation surface of the heat exchange member, and at the same time, the structural strength of the heat exchange member can be improved.

It is appreciated that the number of second heat exchange assemblies 220, as shown in FIG. 2, may be less than or equal to 3/4 of the total number of heat exchange assemblies 200. The more the number of the second heat dissipation components is, the smoother defrosting water at the second end of the evaporator is, but the heat exchange area of the evaporator is reduced, and the heat exchange efficiency of the evaporator is affected. Thus, to ensure that the evaporator has a certain heat exchange area, the number of second heat exchange assemblies 220 is less than or equal to 3/4 of the total number of heat exchange assemblies 200, i.e., the number of first heat exchange assemblies 210 is greater than 1/4 of the total number of heat exchange assemblies 200.

It will be appreciated that as shown in fig. 2, the first end of the evaporator is provided with eight first heat exchange assemblies 210, the second end of the evaporator is provided with three second heat exchange assemblies 220, and the distance between two adjacent heat exchange members 201 of the second heat exchange assemblies 220 is twice the distance between two adjacent heat exchange members 201 of the first heat exchange assemblies 210.

It will be appreciated that fig. 1 illustrates one of schematic structural diagrams of an evaporator according to an embodiment of the present utility model, and as shown in fig. 1, the evaporator includes a heat exchange assembly 200, where the heat exchange assembly 200 includes a plurality of heat exchange members 201 of a first predetermined length and a plurality of heat exchange members 201 of a second predetermined length, and at least one heat exchange member 201 of the second predetermined length is disposed between two adjacent heat exchange members 201 of the first predetermined length, and the first predetermined length is greater than the second predetermined length. The first predetermined length of heat exchange member 201 is flush with the second predetermined length of heat exchange member 201 proximate the first end of the evaporator. Since the length of the first predetermined length of heat exchange member 201 is different from the length of the second predetermined length of heat exchange member 201, the distance between two adjacent heat exchange members 201 is smaller at the first end of the evaporator than at the second end of the evaporator.

It will be appreciated that, as shown in fig. 1, a heat exchange member 201 of a second predetermined length is disposed between two adjacent heat exchange members 201 of a first predetermined length, and the distances between the two adjacent heat exchange members 201 are equal. Since the first predetermined length is greater than the second predetermined length, there is no heat exchange member 201 of the second predetermined length between two adjacent heat exchange members 201 of the first predetermined length at the second end of the evaporator, and thus the distance between two adjacent heat exchange members 201 at the second end of the evaporator is twice the distance between two adjacent heat exchange members 201 at the first end of the evaporator.

It will be appreciated that the second predetermined length is 1/4 to 3/4 of the first predetermined length as shown in fig. 1. The shorter the length of the heat exchanging member 201 of the second predetermined length is, the smoother the defrosting water is, but the heat exchanging area of the evaporator is reduced to affect the heat exchanging efficiency of the evaporator, so that the second predetermined length is 1/4 to 3/4 of the first predetermined length in order to secure the heat exchanging area of the evaporator.

It can be understood that, as shown in fig. 1 and 2, the evaporation tube 100 includes a plurality of evaporation tube units 110, the plurality of evaporation tube units 110 are arranged at intervals along the flow direction of the air flow, in this embodiment, the extension direction of the evaporation tube units 110 is perpendicular to the flow direction of the air flow, the plurality of evaporation tube units 110 are sequentially connected from the head to the tail, and the plurality of evaporation tube units 110 form a pipeline with a plurality of bending structures. By providing a plurality of evaporation tube units 110, the flow path of the refrigerant in the evaporation tube 100 is effectively prolonged, and the heat exchange efficiency of the evaporation tube 100 is improved.

It can be understood that the heat exchanging member 201 is sleeved to the corresponding evaporation tube unit 110 through the through hole. The rim of the through hole is formed with an annular flange extending in the thickness direction of the heat exchange member 201, and the annular flange is fitted to the outer circumferential wall of the evaporation tube unit 110. By arranging the annular convex edge, the contact surface between the heat exchange piece 201 and the evaporation tube unit 110 is effectively increased, and the heat exchange efficiency between the heat exchange piece 201 and the evaporation tube unit 110 is improved.

It will be understood that, as shown in fig. 2, the number of heat exchange assemblies 200 is the same as the number of evaporation tube units 110, the number of heat exchange assemblies 200 is eleven, the number of evaporation tube units 110 is the same, each heat exchange member 201 of each heat exchange assembly 200 is provided with a through hole, and each heat exchange assembly 200 is sleeved on the evaporation tube unit 110 in a one-to-one correspondence. Correspondingly, the number of the evaporation tube units 110 connected with the second heat exchange assembly 220 accounts for 1/4 to 3/4 of the total number of the evaporation tube units 110.

It can be understood that, as shown in fig. 1, the heat exchange assembly 200 is provided with one, the evaporating pipe units 110 are provided with a plurality of through holes, the heat exchange members 201 are provided with a plurality of through holes along the flowing direction of the air flow, the number of the through holes is the same as that of the evaporating pipe units 110, and each evaporating pipe unit 110 is arranged in the through holes in the same row in a penetrating way, so as to realize that the heat exchange members 201 are sleeved on the evaporating pipe units 110 through the through holes.

It will be appreciated that the evaporator further includes a bracket 300, and the bracket 300 is disposed at least one side of the heat exchange assembly 200 and connected to the evaporation tube 100. The support 300 is of a sheet structure, and each evaporation tube unit 110 is connected by adopting the support 300, so that the structural strength of the evaporator is effectively improved, and the evaporator is conveniently fixed.

In the following, referring to fig. 1, an embodiment of the present utility model will be described, as shown in fig. 1, in which an evaporator has a first end and a second end along a flow direction of an air stream (i.e., up-down direction in fig. 1), the evaporator includes an evaporation tube 100, a heat exchange assembly 200 and two brackets 300, the heat exchange assembly 200 includes a plurality of heat exchange members 201 of a first predetermined length and a plurality of heat exchange members 201 of a second predetermined length, and one heat exchange member 201 of a second predetermined length is disposed between two adjacent heat exchange members 201 of the first predetermined length, wherein the first predetermined length is greater than the second predetermined length. The first predetermined length of heat exchange member 201 is flush with the end of the second predetermined length of heat exchange member 201 near the first end of the evaporator, and the distance between two adjacent heat exchange members 201 is equal. The distance between two adjacent heat exchange pieces 201 at the second end of the evaporator is twice the distance between two adjacent heat exchange pieces 201 at the first end of the evaporator, and the second predetermined length is 3/4 of the first predetermined length.

The evaporating pipe units 110 are provided with a plurality of through holes, the heat exchanging pieces 201 are provided with a plurality of through holes along the flowing direction of the air flow, the number of the through holes is the same as that of the evaporating pipe units 110, and each evaporating pipe unit 110 is arranged in the through holes in a penetrating mode in the same row, so that the heat exchanging pieces 201 are sleeved on the evaporating pipe units 110 through the through holes.

The two brackets 300 are arranged on two sides of the heat exchange assembly 200, through holes are also formed in the brackets 300, the number of the through holes in the brackets 300 is the same as that of the evaporating pipe units 110, and each evaporating pipe unit 110 is arranged in the corresponding through hole in a penetrating manner so as to realize that the brackets 300 are sleeved on the plurality of evaporating pipe units 110 through the through holes. The bracket 300 has a sheet-like structure, and the width of the bracket 300 is the same as that of the heat exchange member 201.

In the following description of an embodiment of the present utility model with reference to fig. 2, as shown in fig. 2, the evaporator has a first end and a second end along the flow direction of the air flow (i.e., up-down direction in fig. 2), the evaporator includes an evaporation tube 100, eleven heat exchange assemblies 200 and two brackets 300, wherein eight first heat exchange assemblies 210 and three second heat exchange assemblies 220 are included, each heat exchange assembly 200 includes a plurality of heat exchange members 201 spaced apart from the evaporation tube 100, and the length direction of the heat exchange members 201 is the same as the flow direction of the air flow.

The plurality of heat exchange assemblies 200 are arranged in a plurality of rows along the flow direction of the air flow, the distance between two adjacent heat exchange assemblies 200 can be the same, and the lengths of the heat exchange pieces 201 of each heat exchange assembly 200 are the same. The evaporator comprises a plurality of first heat exchange assemblies 210 and a plurality of second heat exchange assemblies 220, the distance between two adjacent heat exchange pieces 201 of each first heat exchange assembly 210 is smaller than a preset value, the first heat exchange assemblies 210 are located at the first end of the evaporator, and the distances between two adjacent first heat exchange assemblies 210 are equal. The distance between two adjacent heat exchange members 201 of the second heat exchange assembly 220 is greater than a preset value, the second heat exchange assembly 220 is located at the first end of the evaporator, and the distances between two adjacent second heat exchange assemblies 220 are equal.

The distance between two adjacent heat exchange pieces 201 of the second heat exchange assembly 220 is greater than 8mm, the distance between two adjacent heat exchange pieces 201 of the second heat exchange assembly 220 is equal, the heat exchange pieces 201 of two adjacent second heat exchange assemblies 220 are arranged in a staggered mode, at this time, the heat exchange pieces 201 of the last second heat exchange assembly 220 are in one-to-one correspondence with the gaps between two adjacent heat exchange pieces 201 of the next second heat exchange assembly 220, namely, the extension lines of the heat exchange pieces 201 of the last second heat exchange assembly 220 pass through the gaps between two adjacent heat exchange pieces 201 of the next second heat exchange assembly 220. The distance between two adjacent heat exchange members 201 of the first heat exchange assembly 210 is 5mm. The number of the heat exchanging pieces 201 of the adjacent second heat exchanging assemblies 220 is the same, and the heat exchanging pieces 201 of the adjacent second heat exchanging assemblies 220 are in one-to-one correspondence and in the same plane.

The evaporation tube 100 includes eleven evaporation tube units 110, the eleven evaporation tube units 110 are arranged at intervals along the flow direction of the air flow, the eleven evaporation tube units 110 are connected end to end in sequence, and the eleven evaporation tube units 110 form a pipeline with a plurality of bending structures. The heat exchanging members 201 of the heat exchanging assemblies 200 are provided with a through hole, and each heat exchanging assembly 200 is sleeved on the evaporation tube unit 110 in a one-to-one correspondence. The number of the evaporation tube units 110 connected to the second heat exchange assembly 220 is 1/4 to 3/4 of the total number of the evaporation tube units 110.

The two brackets 300 are arranged on two sides of the heat exchange assembly 200, through holes are also formed in the brackets 300, the number of the through holes in the brackets 300 is the same as that of the evaporating pipe units 110, and each evaporating pipe unit 110 is arranged in the corresponding through hole in a penetrating manner so as to realize that the brackets 300 are sleeved on the plurality of evaporating pipe units 110 through the through holes. The bracket 300 has a sheet-like structure, and the width of the bracket 300 is the same as that of the heat exchange member 201.

The second aspect of the present utility model also provides a refrigeration device comprising a compressor, a condenser and an evaporator according to any of the above embodiments, the compressor, condenser and evaporator being in fluid communication.

Fig. 3 illustrates a schematic side sectional structure of a refrigeration apparatus according to an embodiment of the present utility model, fig. 4 illustrates a schematic front sectional structure of a refrigeration apparatus according to an embodiment of the present utility model, and as shown in fig. 3 and fig. 4, a third aspect of the present utility model further provides a refrigeration apparatus, where the refrigeration apparatus includes a refrigeration apparatus body 400 and an evaporator according to any one of the foregoing embodiments, a compartment 410 is provided in an interior of the refrigeration apparatus body 400, the refrigeration apparatus body 400 is provided with an opening communicating with the compartment 410, an air duct is formed in an interior of a side wall of the compartment 410, an air inlet 420 and an air outlet 430 communicating with the air duct are provided in the side wall, and the evaporator is provided in the air duct. Air in the compartment 410 enters the air duct through the air inlet 420 to be in contact heat exchange with the evaporator, and after the temperature of the air is reduced to be cold air, the cold air flows out through the air outlet 430 to refrigerate the compartment 410.

Here, the refrigeration device may be a medical refrigerator, a showcase, a refrigerator, or other refrigeration devices.

It will be appreciated that the air duct is located inside the side wall opposite to the opening, i.e. the air duct is located at the back of the compartment 410, the evaporator cover plate 440 is provided inside the air duct to divide the air duct into the air inlet duct 450 and the air outlet duct 460 communicated with the air inlet duct 450, wherein the air inlet duct 450 is located at one side of the air outlet duct 460 away from the compartment 410, the lower end of the air inlet duct 450 is communicated with the air inlet 420, the upper end of the air inlet duct 450 is communicated with the air outlet duct 460, the air outlet duct 460 is communicated with the air outlet 430, and the evaporator is located in the air inlet duct 450.

It will be appreciated that the top and rear side walls of the compartment 410 are provided with air outlets 430 to allow cool air to uniformly enter the compartment 410, thereby enhancing the cooling effect. The evaporator is connected with the refrigerating equipment body 400 through the two brackets 300 by screws, the air duct cover plate and the refrigerating equipment are matched to form an air duct, the sealing is good, the heat exchange efficiency of the evaporator is improved, and defrosting water is easily discharged out of the box through the drain hole. By using the upper and back air outlets, the bottom air returns, and the temperature in compartment 410 is more uniform, increasing the actual volume used in the refrigeration appliance.

It can be understood that the position where the air inlet duct 450 is communicated with the air outlet duct 460 is provided with an evaporation fan, when the evaporation fan rotates, the evaporation fan drives air in the compartment 410 to enter the air outlet duct 460 through the air inlet 420 to contact with the evaporator for heat exchange, the temperature of the air is reduced to become cold air and then enters the air outlet duct 460, and finally enters the compartment 410 through the air outlet 430 at the back and the top of the compartment 410 to refrigerate the interior of the compartment 410. The cold air exchanges heat with the articles in the compartment 410, absorbs heat and becomes hot air, and the hot air enters the air inlet duct 450 from the air inlet 420 at the bottom, thereby completing one cycle.

Because the space between two adjacent heat exchange pieces 201 at the lower end of the evaporator is small, the evaporator is ensured to have enough heat exchange area, and hot air returns from the bottom, so that frost at the lower end of the evaporator is melted, and frost blockage at the lower end of the evaporator is avoided. Because the interval between two adjacent heat exchange pieces 201 at the upper end of the evaporator is large, defrosting water can smoothly flow out, and can not accumulate in the middle of the fins, so that defrosting effect is ensured, defrosting time is shortened, and the temperature in the defrosting time chamber 410 can not exceed 8 ℃.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (14)

1. An evaporator having a first end and a second end in a flow direction of an air stream, comprising:

an evaporation tube;

the heat exchange assembly comprises a plurality of heat exchange pieces arranged at intervals on the evaporation tube, the length direction of each heat exchange piece is the same as the flow direction of the air flow or forms an acute angle with the flow direction of the air flow, and the distance between two adjacent heat exchange pieces at the first end is smaller than the distance between two adjacent heat exchange pieces at the second end.

2. The evaporator according to claim 1, wherein the evaporator includes a plurality of the heat exchange assemblies arranged in a plurality of rows in a flow direction of the air flow, a distance between adjacent two of the heat exchange members of at least one of the heat exchange assemblies is greater than or equal to a preset value, and a distance between adjacent two of the heat exchange members of the remaining heat exchange assemblies is less than the preset value.

3. The evaporator according to claim 2, wherein the preset value is 8mm.

4. The evaporator of claim 2, wherein the evaporator comprises a plurality of first heat exchange assemblies and a plurality of second heat exchange assemblies, wherein a distance between two adjacent heat exchange members of the first heat exchange assemblies is less than the preset value, and wherein a distance between two adjacent heat exchange members of the second heat exchange assemblies is greater than the preset value.

5. The evaporator of claim 4, wherein the heat exchange members of adjacent two of the second heat exchange assemblies are arranged in a staggered manner.

6. An evaporator according to claim 4 or 5 wherein the number of the second heat exchange assemblies is 3/4 or less of the total number of the heat exchange assemblies.

7. The evaporator of claim 1, wherein the heat exchange assembly comprises a plurality of first predetermined lengths of the heat exchange members and a plurality of second predetermined lengths of the heat exchange members, at least one second predetermined length of the heat exchange members being disposed between two adjacent first predetermined lengths of the heat exchange members, wherein the first predetermined length is greater than the second predetermined length.

8. The evaporator of claim 7, wherein the second predetermined length is 1/4 to 3/4 of the first predetermined length.

9. The evaporator according to any one of claims 1 to 5, 7 or 8, wherein the evaporation tube comprises:

the evaporation pipe units are arranged at intervals along the flowing direction of the airflow, and the evaporation pipe units are sequentially connected end to end.

10. The evaporator according to claim 9, wherein the heat exchanging member is provided with a through hole, and the heat exchanging member is sleeved to the corresponding evaporation tube unit through the through hole; the edge of the through hole is provided with an annular convex edge extending along the thickness direction of the heat exchange piece, and the annular convex edge is attached to the outer peripheral wall of the evaporation tube unit.

11. The evaporator as recited in any one of claims 1 to 5, 7 or 8, further comprising:

and the bracket is arranged on at least one side of the heat exchange assembly and is connected with the evaporation tube.

12. A refrigeration device comprising a compressor, a condenser and the evaporator of any one of claims 1 to 11, the compressor, the condenser and the evaporator being in fluid communication.

13. A refrigeration device characterized by comprising a refrigeration device body and the evaporator according to any one of claims 1 to 11, wherein a compartment is arranged in the refrigeration device body, an air duct is formed in the side wall of the compartment, an air inlet and an air outlet which are communicated with the air duct are formed in the side wall, and the evaporator is arranged in the air duct.

14. The refrigeration unit as recited in claim 13 wherein an evaporator cover is disposed within said air duct to separate said air duct into an air intake duct and an air outlet duct in communication with said air intake duct; the lower end of the air inlet duct is communicated with the air inlet, the upper end of the air inlet duct is communicated with the air outlet duct, the air outlet duct is communicated with the air outlet, and the evaporator is positioned in the air inlet duct.