CN217465052U - Evaporator unit for a refrigeration device and refrigeration device - Google Patents

Abstract

The utility model belongs to the technical field of refrigeration plant, specifically provide an evaporator unit and refrigeration plant for refrigeration plant. The utility model discloses aim at solving the lower problem of cryrogenic evaporimeter defrosting efficiency on the current refrigerator. Therefore, the evaporator unit of the utility model comprises a fin group, a cryogenic evaporation tube and a heater. Wherein, fin group includes a plurality of fins. The cryogenic evaporating pipe penetrates through at least one part of the fins in the fin group and is fixedly connected with the fin group. The heater is thermally connected with at least a part of the fins in the fin group, and the fins thermally connected with the heater have a plurality of connection points with the heater. The utility model discloses well multiple connection point contact between fin and the heater for among the prior art with the single-point contact of heating pipe setting cryogenic evaporator bottom side, the defrosting efficiency of evaporimeter unit is higher. Simultaneously, use the utility model discloses the refrigeration plant's of evaporimeter unit refrigeration efficiency has also obtained corresponding promotion.

Description

Evaporator unit for a refrigeration device and refrigeration device

Technical Field

The utility model belongs to the technical field of refrigeration plant, specifically provide an evaporator unit and refrigeration plant for refrigeration plant.

Background

Existing refrigerators generally include a refrigerating compartment for keeping food fresh at a low temperature (generally around 4 ℃) without freezing, and a freezing compartment for keeping food fresh by freezing (generally around-18 ℃). The freezing chamber of the existing refrigerator cannot meet the requirement of lower temperature of special food materials (below minus 40 ℃), and for this reason, some refrigerators adopt a cascade refrigeration system and are provided with a deep-cooling chamber, so that the deep-cooling chamber is cooled to lower temperature (below minus 60 ℃) through the cascade refrigeration system.

Because the temperature required by the cryogenic chamber is lower, the cryogenic evaporator for refrigerating the cryogenic chamber is easier to frost, the thermal resistance of the frosted cryogenic evaporator is increased, the heat exchange between the cryogenic evaporator and the air is seriously influenced, and the refrigerating efficiency of the cascade refrigerating system is influenced.

To overcome this problem, the prior art generally arranges a heating pipe on the bottom side of the cryogenic evaporator so as to heat the cryogenic evaporator through the heating pipe to melt the frost on the cryogenic evaporator. However, the refrigerating temperature of the cryogenic evaporator is low (generally below-60 ℃), so that the supercooling degree of frost on the cryogenic evaporator is high, and further, the heating pipe on the existing refrigerator has low defrosting efficiency on the cryogenic evaporator and poor defrosting effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the lower problem of cryogenic evaporator defrosting efficiency on the current refrigerator.

In order to achieve the above object, the present invention provides in a first aspect an evaporator unit for a refrigeration apparatus, the refrigeration apparatus comprising a cryogenic compartment, the evaporator unit being adapted for cryogenic compartment refrigeration, the evaporator unit comprising:

a fin set comprising a plurality of fins;

the cryogenic evaporation pipe penetrates through at least one part of the fins in the fin group and is fixedly connected with the fin group;

a heater thermally connected to at least a portion of the fins in the set of fins and having a plurality of connection points between the fins thermally connected to the heater and the heater.

Optionally, the heater is a heating tube,

each fin is provided with a plurality of clamping grooves, each clamping groove corresponds to one connecting point,

each fin is clamped with the heating tube through the clamping groove on the fin.

Optionally, each of the fins has a first long side and a second long side opposite to each other, and a plurality of the slots are respectively disposed on the first long side and the second long side; the heater includes a first portion opposed to the first long side and arranged in a zigzag form on one side of the fin group, and a second portion corresponding to the second long side and arranged in a zigzag form on the other side of the fin group.

Optionally, the heater is a heating wire, the heater comprising a first web attached to one side of the fin set and a second web attached to the other side of the fin set.

Optionally, a ratio of the heating power of the heater to the volume of the cryogenic evaporation tube is not less than 60W/L.

Optionally, a ratio of the heating power of the heater to the volume of the cryogenic evaporation tube ranges from 69W/L to 71W/L.

Optionally, the evaporator unit further comprises an auxiliary evaporation tube passing through at least a part of the fins in the fin group and fixedly connected with the fin group.

Optionally, the heater is an electric heater, and the resistance of the portion of the heater at the bottom of the evaporator unit is greater than the resistance of the portion of the heater at the top of the evaporator unit.

Furthermore, the present invention provides in a second aspect a refrigeration device comprising:

an apparatus body defining a cryogenic compartment;

a refrigeration system having the evaporator unit of any one of the first aspect for refrigerating the cryogenic compartment.

Optionally, the device body further defines a refrigeration compartment, and the refrigeration device further includes a refrigeration evaporator for refrigerating the refrigeration compartment; and/or the equipment body further defines a freezing chamber, and the refrigeration equipment further comprises a freezing evaporator for refrigerating the freezing chamber.

Based on the foregoing description, it can be understood by those skilled in the art that, in the technical solution of the present invention, by providing a plurality of connection points between the fin thermally connected to the heater and the heater, the heat exchange area between the heater and the fin is increased, so as to improve the heating efficiency of the heater to the fin, and thus improve the melting speed of the heater to the frost on the fin and the cryogenic evaporation tube. Therefore, the utility model discloses well multiple connection point contact between fin and the heater for among the prior art with the heating pipe set up the single-point contact of cryogenic evaporator bottom side, the defrosting efficiency of evaporator unit is higher. Simultaneously, use the utility model discloses the refrigeration plant's of evaporimeter unit refrigeration efficiency has also obtained corresponding promotion.

Furthermore, a plurality of clamping grooves are respectively arranged on the first long edge and the second long edge of each fin, the first part of the heater is clamped in the clamping groove on one side of the fin group in a bow-shaped mode, and the second part of the heater is clamped in the clamping groove on the other side of the fin group in a bow-shaped mode.

Further, the ratio of the heating power of the heater to the volume of the cryogenic evaporation tube is not less than 60W/L, so that the heater can quickly defrost the fins and the cryogenic evaporation tube.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solution of the present invention, some embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art will appreciate that elements or portions of the same reference number identified in different figures are the same or similar; the drawings of the present invention are not necessarily drawn to scale relative to each other. In the drawings:

fig. 1 is a first isometric view of an evaporator unit in accordance with some embodiments of the invention;

fig. 2 is a second isometric view of an evaporator unit in accordance with some embodiments of the invention;

fig. 3 is a schematic structural view of a fin of an evaporator unit in some embodiments of the invention;

fig. 4 is a schematic structural view of a heater according to other embodiments of the present invention;

fig. 5 is a schematic diagram of the refrigeration apparatus according to some embodiments of the present invention;

fig. 6 is a schematic diagram of the axial measurement effect of the refrigeration apparatus according to some embodiments of the present invention;

fig. 7 is a sectional view (schematic) of the apparatus body of the refrigerating apparatus in fig. 6 in the direction a-a;

fig. 8 is a schematic diagram of the refrigeration system according to some embodiments of the invention.

Detailed Description

It is to be understood by those skilled in the art that the embodiments described below are only a part of the embodiments of the present invention, and not all embodiments of the present invention, and the part of the embodiments are intended to explain the technical principle of the present invention and not to limit the scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by a person skilled in the art without any inventive work should still fall within the scope of the present invention.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. 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.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 and 2, in some embodiments of the present invention, evaporator unit 100 includes fin group 110, cryogenic evaporation tube 120, optional auxiliary evaporation tube 130, and heater 140. Cryogenic evaporating pipe 120, auxiliary evaporating pipe 130 and heater 140 are all mounted on fin group 110.

With continued reference to fig. 1 and 2, fin set 110 includes a plurality of fins 111. The plurality of fins 111 may have the same size or different sizes. As shown in fig. 1 and 2, the lengths of several fins 111 on the left and right sides of the evaporator unit 100 are smaller than the length of the fin 111 in the middle of the evaporator unit 100.

In some embodiments of the present invention, each of the fins 111 has the same or substantially the same structure, and the structure of the fin 111 is described in detail below with reference to fig. 3.

As shown in fig. 3, the fin 111 is provided with a first tube hole 1111 and a second tube hole 1112. First tube hole 1111 allows cryogenic evaporation tube 120 to pass therethrough, and thus fixes cryogenic evaporation tube 120.

The second pipe hole 1112 allows the auxiliary evaporating pipe 130 to pass therethrough, and thus fixes the auxiliary evaporating pipe 130.

With continued reference to FIG. 3, the fin 111 has a first long side 1113 and a second long side 1114. The first long side 1113 and the second long side 1114 are respectively provided with a plurality of card slots 1115. The clamp groove 1115 is used for clamping the heater 140.

Further, one skilled in the art may also provide a plurality of card slots 1115 only on the first long side 1113 or the second long side 1114, as desired.

Alternatively, the bottom edge of the fin 111 may be provided with a notch 1115, as desired by those skilled in the art.

Referring back to fig. 1 and 2, the heater 140 is provided as a heating pipe 141. Each fin 111 is snapped together with the heating tube 141 by a snap groove 1115, respectively, such that a plurality of connection points are formed between the fins 111 and the heater 140.

It will be appreciated by those skilled in the art that the multiple contact points between fins 111 and heating tube 141 provide greater defrosting efficiency of evaporator unit 100 relative to the single point contact of the prior art where the heating tube is disposed on the bottom side of the cryogenic evaporator.

With continued reference to fig. 1 and 2, the heating tube 141 includes a first portion 1411 opposite the first long side 1113 and a second portion 1412 corresponding to the second long side 1114, the first portion 1411 being disposed in an arcuate pattern on one side of the fin group 110, the second portion 1412 being disposed in an arcuate pattern on the other side of the fin group 110.

It will be appreciated by those skilled in the art that the arcuate arrangement of the heating tube 141 facilitates the fixing of the heating tube 141 to the fin group 110.

It should be noted that, although in some embodiments of the present invention, cryogenic evaporating pipe 120, auxiliary evaporating pipe 130 and heater 140 are thermally connected to each fin 111; however, in other embodiments of the present invention, one skilled in the art may thermally connect at least one of the cryogenic evaporating pipe 120, the auxiliary evaporating pipe 130 and the heater 140 to only a part of the fins 111 in the fin group 110, as required.

In other embodiments of the present invention, as shown in fig. 4, unlike some of the previously described embodiments, the heater 140 is provided as a heating wire 142 and includes a first mesh part 1421 and a second mesh part 1422. The first net part 1421 is attached to one side of the fin set 110, and the second net part 1422 is attached to the other side of the fin set 110.

It will be appreciated by those skilled in the art that providing the heater 140 as a heater wire 142 having a first web 1421 and a second web 1422 can facilitate installation and securing of the heater wire 142 by an assembler as opposed to some of the embodiments described above.

It should be noted that the first net part 1421 and the second net part 1422 may have any feasible shape, such as a spider-net shape, besides the spiral shape shown in fig. 4.

Further, in the present invention, the ratio of the heating power of the heater 140 to the volume of the cryogenic evaporating pipe 120 is not less than 60W/L, so as to ensure that the heater 140 can rapidly melt the frost on the evaporator unit 100. In the present invention, the ratio can be any feasible value, such as 60W/L, 65W/L, 72W/L, 80W/L, 99W/L, etc.

As an example, when the volume of cryogenic evaporation tube 120 is set to 2.16L and the heating power of heater 140 is set to 210W, the ratio of the heating power of heater 140 to the volume of cryogenic evaporation tube 120 is 97.22W/L.

As example two, setting the volume of cryogenic evaporation tube 120 to 2.16L, and the heating power of heater 140 to 165W, the ratio of the heating power of heater 140 to the volume of cryogenic evaporation tube 120 is 76.4W/L.

As example three, setting the volume of cryogenic evaporation tube 120 to 2.16L, and the heating power of heater 140 to 150W, the ratio of the heating power of heater 140 to the volume of cryogenic evaporation tube 120 is 69.4W/L.

Preferably, the ratio of the heating power of the heater 140 to the volume of the cryogenic evaporation tube 120 ranges from 69W/L to 71W/L, so as to reduce the cost of the heater 140 while ensuring the defrosting efficiency of the heater 140 to the evaporator unit 100.

Further preferably, the ratio of the heating power of heater 140 to the volume of cryogenic evaporation tube 120 is 70W/L. It should be understood by those skilled in the art that in practical applications, it is difficult to precisely obtain the ratio of the heating power of the heater 140 to the volume of the cryogenic evaporation tube 120 to 70W/L due to problems of processing, product batch, etc., and therefore, the ratio of the heating power of the heater 140 to the volume of the cryogenic evaporation tube 120 to be slightly more than or less than 70W/L should be regarded as 70W/L.

The working principle and the advantageous effects of the evaporator unit 100 will be further explained with reference to fig. 5 to 8 in conjunction with the application of the evaporator unit 100 of the present invention to a refrigeration device.

It should be noted that, for convenience of description and to enable those skilled in the art to quickly understand the technical solution of the present invention, only the technical features having a strong association degree (directly or indirectly) with the technical problems and/or technical concepts to be solved by the present invention will be described later, and the technical features having a weak association degree with the technical problems and/or technical concepts to be solved by the present invention will not be described again. Since the technical features with a low degree of correlation belong to the common general knowledge in the art, the present invention does not cause insufficient disclosure even if the features with a low degree of correlation are not described.

Further, it should be noted that, in the description of the present invention, the refrigeration device includes a refrigerator, a freezer, and the like.

As shown in fig. 5, the present invention provides a refrigeration apparatus including an apparatus body 200 and a refrigeration system 300.

As shown in fig. 6 and 7, in some embodiments of the present invention, the apparatus body 200 includes a refrigerating compartment 210, a freezing compartment 220, and a deep cooling compartment 230. In addition, those skilled in the art may also make the apparatus body 200 include the deep cooling compartment 230 and optionally the refrigerating compartment 210 or the freezing compartment 220, as necessary.

As shown in fig. 8, the refrigeration system 300 includes a first refrigeration system 310, a second refrigeration system 320, and a heat exchanger 330. The heat exchanger 330 is used for enabling the first refrigerant in the first refrigeration system 310 to absorb heat of the second refrigerant in the second refrigeration system 320, so that the first refrigeration system 310 reduces the temperature of the second refrigeration system.

With continued reference to fig. 8, the first refrigeration system 310 includes a conventional compressor 311, a conventional condenser 312, a conventional dew condensation prevention pipe 313, a conventional dry filter 314, a reversing valve 315, a conventional pressure reducing means 316, a conventional evaporator 317, a conventional liquid reservoir 318, and a conventional return air pipe 319. Wherein, the conventional pressure-reducing member 316 includes a refrigerating capillary 3161, a freezing capillary 3162, and an auxiliary capillary 3163, and the conventional evaporator 317 includes a refrigerating evaporator 3171, a freezing evaporator 3172, and an auxiliary evaporator 3173. The refrigerating evaporator 3171 is used for cooling the refrigerating compartment 210 of the refrigeration equipment, the freezing evaporator 3172 is used for cooling the freezing compartment 220 of the refrigeration equipment, and the auxiliary evaporator 3173 is used for assisting the second refrigeration system 320 in cooling the cryogenic compartment 230 of the refrigeration equipment.

Wherein, the auxiliary evaporator 3173 is the auxiliary evaporation tube 130 of the evaporator unit 100 of the present invention. The auxiliary evaporating pipe 130 connected into the first refrigerating system 310 is herein referred to as an auxiliary evaporator 3173 for the convenience of understanding of those skilled in the art.

With continued reference to FIG. 8, the outlet of the conventional compressor 311 is in fluid communication with the inlet of the conventional condenser 312, the outlet of the conventional condenser 312 is in fluid communication with the inlet of the conventional anti-dew tube 313, the outlet of the conventional anti-dew tube 313 is in fluid communication with the inlet of the conventional dry filter 314, and the outlet of the conventional dry filter 314 is in fluid communication with the inlet of the reversing valve 315.

With continued reference to fig. 8, the diverter valve 315 includes a first outlet, a second outlet, and a third outlet. Wherein the first outlet is in fluid communication with an inlet of the refrigeration capillary 3161, an outlet of the refrigeration capillary 3161 is in fluid communication with an inlet of the refrigeration evaporator 3171, and an outlet of the refrigeration evaporator 3171 is in fluid communication with an inlet of the freezer evaporator 3172. The second outlet is in fluid communication with the inlet of the cryocapillary 3162 and the outlet of the cryocapillary 3162 is in fluid communication with the inlet of the cryoevaporator 3172. The third outlet is in fluid communication with the inlet of auxiliary capillary 3163, the outlet of auxiliary capillary 3163 is in fluid communication with the inlet of auxiliary evaporator 3173, and the outlet of auxiliary evaporator 3173 is in fluid communication with the inlet of refrigeration evaporator 3172.

With continued reference to fig. 8, the outlet of the refrigerated evaporator 3172 is in fluid communication with the inlet of the conventional reservoir 318, the outlet of the conventional reservoir 318 is in fluid communication with the inlet of the conventional return air pipe 319, and the outlet of the conventional return air pipe 319 is in fluid communication with the suction inlet of the conventional compressor 311.

The first refrigeration system 310 operates as follows:

the refrigerant flowing out of the conventional compressor 311 is in a high-temperature and high-pressure state, and is cooled while flowing through the conventional condenser 312, and is in a low-temperature and high-pressure state. The low-temperature and high-pressure refrigerant flows to at least one of the refrigerating capillary 3161, the freezing capillary 3162, and the auxiliary capillary 3163 by the switching valve 315. The refrigerant flowing through the refrigerant storage capillary 3161 is reduced in pressure, expanded, and brought into a low-temperature and low-pressure state. The refrigerant of low temperature and low pressure absorbs heat in the refrigerating evaporator 3171 to become a state of high temperature and low pressure, and thus cools the refrigerating compartment 210 of the refrigerating apparatus. The refrigerant flowing through the refrigerant capillary 3162 is expanded by pressure reduction, and becomes a low-temperature and low-pressure state. The refrigerant of low temperature and low pressure absorbs heat in the freezing evaporator 3172 to become a state of high temperature and low pressure, and thus cools the freezing compartment 220 of the refrigeration apparatus. The refrigerant flowing through the sub capillary 3163 is expanded by the pressure reduction, and becomes a low-temperature and low-pressure state. The low-temperature and low-pressure refrigerant absorbs heat in the auxiliary evaporator 3173 to become a high-temperature and low-pressure state, and thus cools the deep cooling compartment 230 of the refrigeration apparatus. Finally, the high-temperature low-pressure gaseous refrigerant is compressed again into a high-temperature high-pressure state while passing through the conventional compressor 311.

It should be noted that the above states of the refrigerant, i.e., the high temperature, the low temperature, the high pressure, and the low pressure of the refrigerant, are states after the refrigerant enters the corresponding component or flows out of the corresponding component, compared to states before the refrigerant flows into the corresponding component.

As shown in fig. 3, the conventional condenser 312, the refrigerating evaporator 3171, the freezing evaporator 3172 and the auxiliary evaporator 3173 are further respectively provided with fans so that the conventional condenser 312, the refrigerating evaporator 3171, the freezing evaporator 3172 and the auxiliary evaporator 3173 are increased in heat exchange rate with the surrounding environment by the respective corresponding fans.

Further, as shown in fig. 8, the second refrigeration system 320 includes a cryogenic compressor 321, a cryogenic condenser 322, a cryogenic drying filter 323, a cryogenic pressure reducing member 324, a cryogenic evaporator 325, a cryogenic liquid storage pack 326, a cryogenic gas return pipe 327, and a heat exchange pipe 328.

Therein, cryogenic pressure reducing member 324 is preferably provided as a capillary tube.

Wherein, the cryogenic evaporator 325 is the cryogenic evaporation tube 120 of the evaporator unit 100 of the present invention. To facilitate understanding by those skilled in the art, cryogenic evaporator 120 connected into second refrigeration system 320 is referred to herein as cryogenic evaporator 325.

With continued reference to FIG. 8, the outlet of the cryogenic compressor 321 is in fluid communication with the inlet of the cryogenic condenser 322, the outlet of the cryogenic condenser 322 is in fluid communication with the inlet of the heat exchange tube 328, the outlet of the heat exchange tube 328 is in fluid communication with the inlet of the cryogenic filter 323, the outlet of the cryogenic filter 323 is in fluid communication with the inlet of the cryogenic pressure reducing member 324, the outlet of the cryogenic pressure reducing member 324 is in fluid communication with the inlet of the cryogenic evaporator 325, the outlet of the cryogenic evaporator 325 is in fluid communication with the inlet of the cryogenic reservoir 326, the outlet of the cryogenic reservoir 326 is in fluid communication with the inlet of the cryogenic muffler 327, and the outlet of the cryogenic muffler 327 is in fluid communication with the inlet of the cryogenic compressor 321.

The second refrigeration system 320 operates as follows:

the refrigerant flowing out of the cryogenic compressor 321 is in a high-temperature and high-pressure state, and is cooled while passing through the cryogenic condenser 322, and is in a low-temperature and high-pressure state. When the low-temperature and high-pressure refrigerant flows through the cryogenic decompression member 324, the pressure is reduced and expanded, and the refrigerant is in a low-temperature and low-pressure state. The low-temperature and low-pressure refrigerant absorbs heat in the cryogenic evaporator 325 to become a high-temperature and low-pressure state, and thus cools the cryogenic compartment 230 of the refrigeration apparatus. The high-temperature low-pressure gas refrigerant is compressed again to a high-temperature high-pressure state when flowing through the cryogenic compressor 321.

As shown in fig. 1, 2 and 8, auxiliary evaporator 3173 and cryogenic evaporator 325 are part of evaporator unit 100 of the present invention.

With continued reference to FIG. 8, cryogenic return tube 327 in second refrigeration system 320 includes a first tube section 3271 and a second tube section 3272. First tube section 3271 is thermally coupled to cryogenic depressurizing member 324. Illustratively, first tube section 3271 and cryogenic pressure reducing member 324 are coupled together by fins, or first tube section 3271 and cryogenic pressure reducing member 324 are wrapped with insulating cotton. Second tube section 3272 is thermally coupled to heat exchange tube 328 as part of cryogenic return tube 327. Illustratively, the second tube section 3272 and the heat exchange tube 328 may be connected together by fins, or the second tube section 3272 and the heat exchange tube 328 may be wrapped with insulation wool.

With continued reference to fig. 8, in some embodiments of the present invention, the heat exchanger 330 includes a first pipe 331 and a second pipe 332. Wherein the first pipe 331 is connected in series between the outlet of the conventional pressure reducing means 316 and the inlet of the conventional compressor 311. Preferably, an inlet of the first pipe member 331 is fluidly connected to an outlet of the freezing capillary tube 3162, an outlet of the refrigerating evaporator 3171, and an outlet of the auxiliary evaporator 3173, respectively, and an outlet of the first pipe member 331 is fluidly connected to an inlet of the freezing evaporator 3172. A second pipe 332 is connected in series between the outlet of cryogenic condenser 322 and the inlet of cryogenic pressure reducing means 324, specifically, second pipe 332 is connected in series between cryogenic condenser 322 and cryogenic filter drier 323.

So far, the technical solution of the present invention has been described in connection with the foregoing embodiments, but it is easily understood by those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Without deviating from the technical principle of the present invention, those skilled in the art can split and combine the technical solutions in the above embodiments, and also can make equivalent changes or substitutions for related technical features, and any changes, equivalent substitutions, improvements, etc. made within the technical concept and/or technical principle of the present invention will fall within the protection scope of the present invention.

Claims (10)

1. An evaporator unit for a refrigeration appliance, the refrigeration appliance including a cryogenic compartment, the evaporator unit being for refrigeration of the cryogenic compartment, the evaporator unit comprising:

a fin set comprising a plurality of fins;

the cryogenic evaporation pipe penetrates through at least one part of the fins in the fin group and is fixedly connected with the fin group;

a heater thermally connected to at least a portion of the fins in the set of fins and having a plurality of connection points between the fins thermally connected to the heater and the heater.

2. Evaporator unit for a cold appliance according to claim 1,

the heater is a heating pipe, and the heating pipe is a heating pipe,

a plurality of clamping grooves are respectively arranged on each fin, each clamping groove corresponds to one connecting point,

each fin is clamped with the heating tube through the clamping groove on the fin.

3. Evaporator unit for a refrigeration appliance according to claim 2,

each fin is provided with a first long edge and a second long edge which are opposite to each other, and a plurality of clamping grooves are formed in the first long edge and the second long edge respectively;

the heater includes a first portion corresponding to the first long side and a second portion corresponding to the second long side, the first portion being arranged in a zigzag form on one side of the fin group, and the second portion being arranged in a zigzag form on the other side of the fin group.

4. Evaporator unit for a refrigeration appliance according to claim 1,

the heater is a heating wire, the heater includes a first mesh part and a second mesh part,

the first net part is attached to one side of the fin group, and the second net part is attached to the other side of the fin group.

5. Evaporator unit for a cold appliance according to any of claims 1 to 4,

the ratio of the heating power of the heater to the volume of the cryogenic evaporation tube is not less than 60W/L.

6. Evaporator unit for a cold appliance according to claim 5,

the value range of the ratio of the heating power of the heater to the volume of the deep cooling evaporation tube is 69W/L to 71W/L.

7. Evaporator unit for a cold appliance according to any of claims 1 to 4,

the evaporator unit further comprises auxiliary evaporation tubes which penetrate through at least a part of the fins in the fin group and are fixedly connected with the fin group.

8. Evaporator unit for a cold appliance according to any of claims 1 to 4,

the heater is an electric heater, and the resistance of a portion of the heater located at the bottom of the evaporator unit is greater than the resistance of a portion of the heater located at the top of the evaporator unit.

9. A refrigeration apparatus, comprising:

an apparatus body defining a cryogenic compartment;

refrigeration system with an evaporator unit according to any of claims 1 to 8 for refrigerating the cryogenic compartment.

10. The refrigeration appliance according to claim 9,

the equipment body also defines a refrigerating chamber, and the refrigeration equipment also comprises a refrigerating evaporator for refrigerating the refrigerating chamber; and/or the like and/or,

the equipment body also defines a freezing chamber, and the refrigeration equipment also comprises a freezing evaporator for refrigerating the freezing chamber.

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