Evaporator and refrigeration equipment

Abstract

The invention relates to the technical field of household appliances, and discloses an evaporator which comprises a refrigerant pipe and a heating device, and a refrigerating channel and a heating channel are arranged in the refrigerant pipe; and the heating device is arranged in the heating channel. According to the air conditioner, the heating device is directly arranged in the refrigerant pipe, and when the evaporator needs to be defrosted, heat resistance is reduced, so that the defrosting speed is increased, energy waste is reduced, and energy conservation and emission reduction are achieved. The invention further discloses the refrigeration equipment.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and particularly to an evaporator and a refrigeration device. Background Art

[0002] Refrigeration devices are commonly used household appliances by people. Energy conservation is one of the directions of the technological development of refrigeration devices. As the refrigeration component of a refrigeration device, the evaporator has a great impact on the energy-saving effect of the entire refrigeration system. During the operation of a refrigeration device, the surface temperature of the evaporator is much lower than the dew point of the surrounding air, resulting in easy frosting on the surface of the evaporator, which affects the refrigeration effect of the evaporator. Therefore, when the frost layer on the surface of the evaporator reaches a certain thickness, the evaporator needs to be heated to defrost the evaporator. Heating the evaporator is a relatively large energy consumption source. Therefore, reducing the energy loss during the defrosting process of the evaporator is crucial for the energy conservation of refrigeration devices.

[0003] In the related art, most evaporators use electric defrosting to ensure the refrigeration performance of the evaporator. A heating device is provided at the bottom or top of the evaporator. When the frost layer accumulates on the surface of the evaporator and defrosting is required, the heating device is turned on, and the heat radiation generated by the operation of the heating device is used to melt the frost on the surface of the evaporator, thereby ensuring the continuous and stable operation of the evaporator.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] When a heating device is provided at the bottom or top of the evaporator and the evaporator is defrosted by the heat radiation of the heating device, the defrosting efficiency is low. For some relatively high evaporators, the heating device is far from the frosting position, resulting in slower defrosting, an increase in defrosting time, causing energy waste and unable to achieve the energy-saving effect.

[0006] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present application. Therefore, it may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0007] To have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. The summary is not a general review, nor is it intended to identify key / important constituent elements or delineate the protection scope of these embodiments. Instead, it serves as a preamble to the subsequent detailed description.

[0008] The embodiments of the present disclosure provide an evaporator and a refrigeration device to improve the defrosting efficiency of the evaporator, thereby achieving low-carbon energy conservation.

[0009] According to the first aspect of the embodiments of the present disclosure, an evaporator is provided. The evaporator includes: a refrigerant pipe and a heating device. A refrigeration channel and a heating channel are provided inside the refrigerant pipe; the heating device is arranged inside the heating channel.

[0010] Optionally, the heating channel is disposed below the cooling channel.

[0011] Optionally, the number of cooling channels is plural, and the plural cooling channels are arranged in sequence in the vertical direction.

[0012] Optionally, the cross-sectional areas of the plural cooling channels are the same; alternatively, the plural cooling channels include a first cooling channel and a second cooling channel, the distance between the first cooling channel and the heating channel is less than the distance between the second cooling channel and the heating channel, and the cross-sectional area of the first cooling channel is larger than the cross-sectional area of the second cooling channel.

[0013] Optionally, the cross-sections of both the cooling channel and the heating channel are rectangular.

[0014] Optionally, the heating device extends along the length direction of the heating channel; alternatively, the number of heating devices is plural, and the plural heating devices are arranged in sequence along the length direction of the heating channel.

[0015] Optionally, the refrigerant pipe is spirally arranged in the vertical direction.

[0016] Optionally, the outer surfaces of the refrigerant pipes are located in the same vertical plane.

[0017] Optionally, the evaporator further includes a manifold inlet pipe and a manifold outlet pipe, the manifold inlet pipe is communicated with the cooling channel of the uppermost refrigerant pipe; the manifold outlet pipe is communicated with the cooling channel of the lowermost refrigerant pipe.

[0018] According to a second aspect of the embodiments of the present disclosure, a refrigeration device is provided, and the refrigeration device includes an evaporator as described in any one of the above embodiments.

[0019] The evaporator provided by the embodiments of the present disclosure can achieve the following technical effects: The evaporator includes a refrigerant pipe and a heating device, a cooling channel and a heating channel are provided in the refrigerant pipe, and the heating device is disposed in the heating channel, so that the heating device and the evaporator can be integrally arranged, reducing heat barrier. Compared with the related art in which the heating device is disposed on the bottom wall or the top wall of the evaporator, the heat radiation is changed into heat conduction, the defrosting rate is increased, thereby reducing energy consumption and achieving energy conservation and emission reduction.

[0020] The above general description and the following description are only exemplary and explanatory, and are not used to limit the present application. Description of the Drawings

[0021] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation, and among them:

[0022] Figure 1 It is a schematic structural diagram of an evaporator provided by an embodiment of the present disclosure;

[0023] Figure 2 It is a schematic structural diagram of a refrigerant pipe provided by an embodiment of the present disclosure;

[0024] Figure 3 It is a schematic structural diagram of the refrigerant pipe from another perspective provided by an embodiment of the present disclosure;

[0025] Figure 4 is Figure 3 the cross-sectional view taken along the A-A direction in

[0026] Figure 5 It is an internal schematic diagram of another refrigerant pipe provided by an embodiment of the present disclosure;

[0027] Figure 6 It is a schematic structural diagram of another evaporator provided by an embodiment of the present disclosure.

[0028] Reference numerals:

[0029] 10: Evaporator;

[0030] 20: Refrigerant pipe; 21: Refrigeration channel; 211: First refrigeration channel; 212: Second refrigeration channel; 213: Third refrigeration channel; 22: Heating channel; 221: Heating device;

[0031] 30: Manifold inlet pipe; 31: Inlet part;

[0032] 40: Manifold outlet pipe; 41: Outlet part;

[0033] 50: Fins. Detailed implementation manners

[0034] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are only for reference and illustration purposes and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, numerous details are provided to give a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be shown in a simplified manner to simplify the drawings.

[0035] The terms "first", "second", etc. in the specification, claims and above-mentioned drawings of the embodiments of the present disclosure are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such data may be interchanged under appropriate circumstances so as to describe the embodiments of the present disclosure herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0036] In the embodiments of the present disclosure, the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "middle", "outer", "front", and "back" is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and their embodiments, and are not used to limit that the indicated device, element, or component must have a specific orientation, or be constructed and operated in a specific orientation. Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0037] In addition, the terms "arrangement", "connection", and "fixation" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0038] Unless otherwise specified, the term "plurality" means two or more.

[0039] In the embodiments of the present disclosure, the character " / " indicates that the objects before and after are in an "or" relationship. For example, A / B means: A or B.

[0040] The term "and / or" is an associative relationship describing an object, indicating that there can be three relationships. For example, A and / or B means: A or B, or, the three relationships of A and B.

[0041] It should be noted that, without conflict, the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0042] In recent years, the demand for energy-saving refrigeration equipment has gradually increased. As the refrigeration device of the refrigeration equipment, the evaporator has a huge impact on the energy-saving effect of the entire refrigeration system. During the operation of the refrigeration equipment, the surface temperature of the evaporator is much lower than the dew point of the surrounding air, resulting in easy frosting on the surface of the evaporator, which affects the refrigeration effect of the evaporator. Therefore, when the frost layer on the surface of the evaporator reaches a certain thickness, defrosting work needs to be carried out on the evaporator. Most evaporators use electric defrosting to ensure the heat exchange performance of the evaporator. A heating device is arranged at the bottom or top of the evaporator. When the frost layer on the surface of the evaporator is thick and defrosting is required, the heating device is turned on, and the frost on the surface of the evaporator is melted by the heat radiation generated by the operation of the heating device, so as to ensure the continuous and stable operation of the evaporator.

[0043] Among various energy consumptions of refrigeration equipment, heating the evaporator to defrost is a huge energy consumption source. A high-power heating device is set at the bottom or top of the evaporator. When the frost layer on the evaporator surface is thick, the heating device starts to perform defrosting work. This defrosting method has low efficiency and slow defrosting speed, causing energy waste and unable to achieve energy-saving effects.

[0044] This application provides an evaporator and a refrigeration equipment. By arranging the heating device inside the evaporator and integrating the heating device with the evaporator, the defrosting efficiency can be accelerated, energy waste can be reduced, and the effects of energy conservation and emission reduction can be achieved.

[0045] The refrigeration equipment can be a refrigerator, a freezer, an air conditioner, etc. Hereinafter, the application will be specifically described by taking the refrigeration equipment as a refrigerator as an example.

[0046] In the first aspect of the embodiments of the present disclosure, in combination with Figures 1 to 6 as shown, an evaporator 10 is provided.

[0047] Optionally, in combination with Figures 1 to 2 as shown, the evaporator 10 includes a refrigerant pipe 20 and a heating device 221. A refrigeration channel 21 and a heating channel 22 are arranged inside the refrigerant pipe 20; the heating device 221 is arranged inside the heating channel 22.

[0048] The refrigeration process of the refrigerator is as follows: The refrigerant passes through the compressor, the condenser and the capillary tube, enters the refrigerant pipe 20 of the evaporator 10, evaporates and absorbs the surrounding heat, exchanges heat with the surrounding air, reduces the temperature near the evaporator 10 to achieve refrigeration, and a frost layer will be formed on the surface of the evaporator 10 due to the temperature difference with the surrounding air. When the frost layer is thick, the refrigeration performance of the evaporator 10 is reduced. Therefore, it is necessary to defrost the evaporator 10 regularly.

[0049] The interior of the refrigerant pipe 20 is divided into a refrigeration channel 21 and a heating channel 22. The refrigerant flows in the refrigeration channel 21, and the heating device 221 is arranged inside the heating channel 22. In this way, an integrated design of the heating device 221 and the evaporator 10 can be realized. The refrigeration channel 21 and the heating channel 22 are closely spaced. When the evaporator 10 stops working and defrosting is required, the heating device 221 can quickly transfer heat to the outer surface of the refrigeration channel 21, improve the defrosting efficiency, and thus reduce the heat loss caused by the defrosting of the evaporator 10.

[0050] Optionally, in combination with Figure 2As shown, the evaporator 10 includes a refrigerant pipe 20 which is wound in a meandering manner in the vertical direction to form an evaporator 10 with multiple layers of refrigerant pipes 20. A refrigeration channel 21 and a heating channel 22 are provided inside the refrigerant pipe 20. A refrigerant flows in the refrigeration channel 21, and a heating device 221 is arranged in the heating channel 22. That is, in the height direction of the evaporator 10, each layer of refrigerant pipe 20 is provided with a heating device 221, namely, the heating device 221 is integrally designed with the evaporator 10.

[0051] By arranging the heating device 221 inside the refrigerant pipe 20, compared with arranging the heating device 221 outside the refrigerant pipe 20, the heat radiation is changed into heat conduction, improving the defrosting efficiency. At the same time, the heating device 221 is integrally designed with the evaporator 10, reducing the heat transfer resistance during heat transfer, thereby further improving the overall performance of the machine.

[0052] Optionally, an inner wall is provided between the refrigeration channel 21 and the heating channel 22 to enable the refrigerant to flow only inside the refrigeration channel 21 and prevent the refrigerant from entering the heating channel 22.

[0053] Optionally, in the direction from top to bottom, the refrigeration channels 21 of the upper-layer refrigerant pipes 20 are interconnected with the refrigeration channels 21 of the lower-layer refrigerant pipes 20 to enable the refrigerant to flow in the refrigeration channels 21 of each layer of refrigerant pipes 20.

[0054] Optionally, the heating channel 22 is arranged below the refrigeration channel 21.

[0055] During the defrosting process of the evaporator 10, the heating device 221 heats up. Since the mass of hot air per unit volume is less than that of cold air, that is, hot air is lighter than cold air, the hot air will diffuse upward. By arranging the heating channel 22 below the refrigeration channel 21, the hot air diffuses towards the refrigeration channel 21, facilitating defrosting of the outer surface of the refrigerant pipe 20 where the refrigeration channel 21 is located and improving the defrosting efficiency. In addition, the bottom of the evaporator 10 is more prone to frosting than the top. By arranging the heating channel 22 below the refrigeration channel 21, heat can be directly transferred to the position prone to frosting.

[0056] Optionally, as combined Figure 3 and Figure 4 shown, the number of refrigeration channels 21 is multiple, and the multiple refrigeration channels 21 are arranged in sequence in the vertical direction.

[0057] Exemplarily, four channels are provided inside the refrigerant pipe 20, namely a first refrigeration channel 211, a second refrigeration channel 212, and a third refrigeration channel 213. The first refrigeration channel 211, the second refrigeration channel 212, and the third refrigeration channel 213 are arranged in sequence in the height direction of the refrigerant pipe 20, and the heating channel 22 is arranged below the first refrigeration channel 213.

[0058] By setting multiple refrigeration channels 21, the flow rate of the refrigerant in the refrigerant pipe 20 is increased, and the refrigeration effect of the evaporator 10 is improved.

[0059] Optionally, inside the refrigerant pipe 20, the heating channel 22 and the refrigeration channels 21 are arranged alternately. There are multiple refrigeration channels 21, and there is one or more heating channels 22. The heating channel 22 is arranged in the middle of the multiple refrigeration channels 21, so as to achieve the purpose of simultaneously heating the refrigeration channels 21 above the heating channel 22 and the refrigeration channels 21 below the heating channel 22, thereby accelerating the melting of the frost layer and saving energy consumption.

[0060] Optionally, the cross-sectional areas of the multiple refrigeration channels 21 are the same; or, the multiple refrigeration channels 21 include a first refrigeration channel 211 and a second refrigeration channel 212. The distance between the first refrigeration channel 211 and the heating channel 22 is less than the distance between the second refrigeration channel 212 and the heating channel 22, and the cross-sectional area of the first refrigeration channel 211 is larger than the cross-sectional area of the second refrigeration channel 212.

[0061] The same cross-sectional areas of the multiple refrigeration channels 21 can reduce the processing technology and facilitate mass production.

[0062] Optionally, as shown in Figure 5 , the cross-sectional areas of the refrigeration channel 21 and the heating channel 22 are not the same. The cross-sectional area of the heating channel 22 is larger than or smaller than the cross-sectional area of the refrigeration channel 21. The cross-sectional area of the heating channel 22 can be determined according to the type, size, etc. of the heating device 221.

[0063] The cross-sectional areas of the refrigeration channels 21 are not the same. The cross-sectional area of the refrigeration channel 21 closer to the heating device 221 is larger. A larger cross-sectional area of the refrigeration channel 21 means a larger flow rate of the refrigerant per unit time, and the evaporator 10 cools faster. However, this will also make the surface of the refrigerant pipe 20 more likely to frost. Placing the refrigeration channel 21 with a larger cross-sectional area lower, closer to the heating device 221, facilitates the heat generated by the heating device 221 to be directly transferred to this refrigeration channel 21, facilitating rapid defrosting. In addition, placing the refrigeration channel 21 with a larger cross-sectional area lower can lower the center of gravity of the evaporator 10 and prevent it from tipping over.

[0064] Optionally, the cross-sections of both the refrigeration channel 21 and the heating channel 22 are rectangular.

[0065] A rectangular cross-section facilitates the arrangement of the multiple refrigeration channels 21 and the heating channel 22 in sequence along the height direction of the refrigerant pipe 20. Compared with other cross-sectional shapes, the gaps between the refrigeration channels 21 and the heating channel 22 are reduced, thereby reducing the occupied area of the evaporator 10.

[0066] It can be understood that the shapes and specific dimensions of the cross-sections of the refrigeration channel 21 and the heating channel 22 are not specifically limited and can be set according to the actual situation. For example, the refrigeration channel 21 and the heating channel 22 can be set as circular tubes.

[0067] Optionally, the heating device 221 is arranged to extend along the length direction of the heating channel 22; or, the number of the heating devices 221 is multiple, and the multiple heating devices 221 are arranged in sequence along the length direction of the heating channel 22.

[0068] Optionally, the heating device 221 is a heating wire. At present, most of the evaporators 10 of frost-free refrigerators use electric defrosting to ensure the heat exchange performance of the evaporator 10. A steel pipe or a glass tube heating wire is fixed in the heating channel 22, and the frost on the surface of the evaporator 10 is melted by the heat radiation generated by the operation of the heating wire, so as to ensure the continuous and stable operation of the evaporator 10. Moreover, the heating wire is arranged in the refrigerant pipe 20, which can realize the integrated design of the evaporator 10 and the heating wire, enhance the defrosting effect, and achieve low-carbon energy conservation.

[0069] Optionally, the heating wire is fixed to the heating channel 22 through a bracket.

[0070] Optionally, the heating device 221 is a ceramic heating sheet.

[0071] The high-temperature baked ceramic heating sheet is a new generation of heating element produced by directly printing resistance paste on the alumina ceramic green body, baking at a high temperature of about 1600 °C, and then performing electrode and lead processing. The ceramic heating sheet has excellent characteristics such as simple structure, rapid temperature rise, and high thermal stability performance.

[0072] In the heating channel 22, a plurality of ceramic heating sheets are arranged in sequence along the length direction of the heating channel 22 to realize the simultaneous defrosting of the evaporator 10 by the plurality of ceramic heating sheets.

[0073] Optionally, a fixing plate is provided in the heating channel 22 to fix the ceramic heating sheet in the heating channel 22.

[0074] Optionally, in combination Figure 1 and Figure 6 As shown, the refrigerant pipe 20 is spirally arranged in the up and down direction.

[0075] The refrigerant pipe 20 is wound back and forth multiple times in the up and down direction to form a multi-layer refrigerant pipe 20 with a spiral structure. The number of layers of the refrigerant pipe 20 is set according to the size of the evaporator 10 reserved in the refrigerator and the refrigeration requirement for the evaporator 10.

[0076] In the embodiments of the present disclosure, a multi-layer refrigerant pipe 20 is provided, and the refrigeration channels 21 communicate with each other between the layers of the refrigerant pipes 20. The refrigerant flows into the refrigeration channel 21 of the first-layer refrigerant pipe 20 for heat exchange, and then flows through the refrigeration channels 21 in the second-layer, third-layer and other intermediate-layer refrigerant pipes 20 again, and finally flows out from the refrigeration channel 21 of the lowermost-layer refrigerant pipe 20.

[0077] In the evaporator 10 in which the multi-layer refrigerant pipes 20 are spirally arranged, a heating channel 22 is provided in each layer of the refrigerant pipe 20, and a heating device 221 is arranged in the heating channel 22. When the evaporator 10 is heated, the heating device 221 in each layer can heat the upper and lower layers of the refrigerant pipes 20. Compared with the prior art, the heating device 221 is arranged at the top or bottom of the evaporator 10, greatly accelerating the heating efficiency of the evaporator 10 and increasing the defrosting speed of the evaporator 10, thereby reducing energy waste.

[0078] Optionally, a temperature sensor is arranged on the multi-layer refrigerant pipe 20, a controller is arranged in the refrigerator, and the controller is connected to the temperature sensor and the heating device 221. When the temperature sensor detects that the temperature on the surface of the evaporator 10 is relatively low and defrosting is required, the evaporator 10 stops refrigeration operation, and the controller controls the heating device 221 to start, so that the heating device 221 in each layer of the refrigerant pipe 20 heats the evaporator 10 simultaneously, so that the evaporator 10 can defrost quickly.

[0079] Optionally, a temperature sensor is arranged in each layer of the refrigerant pipe 20. When frosting on a certain layer of the multi-layer refrigerant pipes 20 is relatively serious, the controller can independently control the heating device 221 in this layer of the refrigerant pipe 20 to work, so as to realize independent defrosting according to the frosting condition of a single-layer refrigerant pipe 20. In this way, energy conservation and emission reduction can be further realized.

[0080] Optionally, a plurality of ceramic heating sheets are sequentially arranged in each layer of the refrigerant pipe 20, and each ceramic heating sheet can be independently connected to the controller. In this way, according to the frosting condition of the evaporator 10, the local heating of the evaporator 10 can be independently controlled to realize local defrosting.

[0081] Optionally, the power of the heating device 221 is adjustable. The heating device 221 is connected to the controller. When the frost layer on the surface of the evaporator 10 condenses thicker, the controller controls the heating device 221 to increase the heating power to quickly generate higher heat. When the frost layer on the surface of the evaporator 10 condenses less, the controller controls the heating device 221 to reduce the power, which can further achieve the effect of energy conservation.

[0082] Optionally, the outer surfaces of the refrigerant pipes 20 are located in the same vertical plane.

[0083] The multi-layer refrigerant pipes 20 are spirally arranged along the height direction of the evaporator 10 and are located in the same vertical plane. In this way, the installation of the evaporator 10 inside the refrigerator can be facilitated and the installation space can be reduced.

[0084] Optionally, the refrigerant pipes 20 are spirally arranged in the up-and-down direction, and each layer of refrigerant pipes 20 is inclined downward along the horizontal direction, similar to the coiling method of the thread in a bolt, so as to form multi-layer refrigerant pipes 20, and the refrigerant channels 21 of each layer of refrigerant pipes 20 are interconnected.

[0085] Optionally, each layer of refrigerant pipes 20 can be located in the same horizontal plane along the horizontal direction, and a manifold is arranged at the end of each layer of refrigerant pipes 20 to realize the interconnection of the refrigerant channels of each layer of refrigerant pipes 20.

[0086] Optionally, in combination Figure 6 As shown, the evaporator 10 further includes a manifold inlet pipe 30 and a manifold outlet pipe 40. The manifold inlet pipe 30 is connected to the refrigerant channel 21 of the uppermost refrigerant pipe 20; the manifold outlet pipe 40 is connected to the refrigerant channel 21 of the lowermost refrigerant pipe 20.

[0087] The manifold inlet pipe 30 is connected to the uppermost layer of refrigerant pipes 20 to input refrigerant into the evaporator 10, and the manifold outlet pipe 40 is connected to the lowermost layer of refrigerant pipes 20 to discharge the refrigerant after heat exchange in the refrigerant pipes 20.

[0088] Optionally, the heating channel 22 of the uppermost layer of refrigerant pipes 20 is provided with a group of partitions to block the heating channel 22, so that when the refrigerant enters the refrigerant pipes 20 from the manifold inlet pipe 30, the refrigerant only flows through the refrigerant channel 21 and does not flow through the heating channel 22, preventing the heating device 221 from being damaged.

[0089] Optionally, the cross-section of the inlet part 31 of the manifold inlet pipe 30 is rectangular to be adapted to the refrigerant pipes 20 with a rectangular cross-section, and the inlet part 31 is sleeved on the port of the refrigerant pipes 20 to prevent refrigerant leakage.

[0090] Optionally, the cross-section of the outlet part 41 of the manifold outlet pipe 40 is rectangular to be adapted to the lowermost refrigerant pipes 20 with a rectangular cross-section, and the outlet part 41 is sleeved on the port of the refrigerant pipes 20 to prevent refrigerant leakage.

[0091] Optionally, the manifold inlet pipe 30 and the manifold outlet pipe 40 are located on the same side, and the manifold inlet pipe 30 and the manifold outlet pipe 40 are arranged opposite to each other along the up-and-down direction of the evaporator 10, so as to facilitate the connection of the evaporator 10 with the compressor and the condenser.

[0092] Optionally, the outer surface of the refrigerant pipe 20 is provided with fins 50 formed by integral shovel teeth. The number of fins 50 is multiple, and the multiple fins 50 are arranged in sequence along the length direction of each layer of refrigerant pipe 20. When the evaporator 10 refrigerates, the fins 50 can accelerate the dissipation of the cold quantity of the evaporator 10.

[0093] The outer surface of the fin 50 is the position where the evaporator 10 is prone to frosting. In the evaporator 10 provided with multiple layers of refrigerant pipes 20, a heating device 221 is arranged in each layer of refrigerant pipe 20. In this way, the side of the fin 50 facing the refrigerant pipe 20 can be in contact with the heating device 221 to accelerate the melting of the frost layer on the surface of the fin 50.

[0094] In addition, the fins 50 are formed by integral shovel teeth on the outer surface of the refrigerant pipe 20. There is no contact thermal resistance between the fins 50 and the refrigerant pipe 20, which is convenient for the heat generated by the heating device 221 to spread on the surface of the fins 50.

[0095] Optionally, the fins 50 of each layer of refrigerant pipe 20 are arranged oppositely along the height direction of the evaporator 10, and there are gaps between the fins 50 of each layer of refrigerant pipe 20. In this way, when the evaporator 10 is heated for defrosting, the water after defrosting can drip along the height direction of the evaporator 10 to the bottom of the evaporator 10, avoiding the accumulation of water droplets on the surface of the evaporator 10.

[0096] According to the second aspect of the embodiments of the present disclosure, a refrigeration device is provided, and the evaporator 10 is arranged in the refrigeration device.

[0097] The evaporator 10 provided by the embodiments of the present disclosure can achieve the following technical effects: The evaporator 10 includes a refrigerant pipe 20 and a heating device 221. A refrigeration channel 21 and a heating channel 22 are arranged in the refrigerant pipe 20. The heating device 221 is arranged in the heating channel 22. The refrigerant pipe 20 is spirally arranged along the height direction of the evaporator 10 to form multiple layers of refrigerant pipes 20. A heating device 221 is arranged in each layer of refrigerant pipe 20 to realize the integrated setting of the heating device 221 and the evaporator 10 and reduce the heat barrier. Compared with the related art where the heating device 221 is arranged on the bottom wall or the top wall of the evaporator 10, the defrosting rate is increased, thereby reducing energy consumption and achieving energy conservation and emission reduction.

[0098] The above description and the drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural and other changes. The embodiments only represent possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations can vary. Parts and features of some embodiments can be included in or replaced by parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. An evaporator, characterized in that, Comprising: A refrigerant pipe, in which a refrigeration channel and a heating channel are provided; A heating device, disposed in the heating channel.

2. The evaporator according to claim 1, wherein The heating channel is disposed below the refrigeration channel.

3. The evaporator according to claim 1, wherein The number of the refrigeration channels is multiple, and the multiple refrigeration channels are arranged in sequence in the up-down direction.

4. The evaporator according to claim 3, wherein The cross-sectional areas of the multiple refrigeration channels are the same; or The multiple refrigeration channels include a first refrigeration channel and a second refrigeration channel, the distance between the first refrigeration channel and the heating channel is less than the distance between the second refrigeration channel and the heating channel, and the cross-sectional area of the first refrigeration channel is larger than the cross-sectional area of the second refrigeration channel.

5. The evaporator according to claim 1, wherein The cross-sections of both the refrigeration channel and the heating channel are rectangular.

6. The evaporator according to claim 1, wherein The heating device extends along the length direction of the heating channel; or the number of the heating devices is multiple, and the multiple heating devices are arranged in sequence along the length direction of the heating channel.

7. The evaporator according to any one of claims 1 to 6, wherein The refrigerant pipe is spirally arranged in the up-down direction.

8. The evaporator according to claim 7, wherein The outer surface of the refrigerant pipe is located in the same vertical plane.

9. The evaporator according to claim 7, characterized in that, Further comprising: A manifold inlet pipe, communicating with the refrigeration channel of the uppermost refrigerant pipe; A manifold outlet pipe, communicating with the refrigeration channel of the lowermost refrigerant pipe.

10. A refrigeration device, characterized in that, Including the evaporator according to any one of claims 1 to 9.

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