Defrosting device and refrigeration equipment
By using the waste heat generated by the compressor to defrost the evaporator in the refrigerator, the problem of high energy consumption of the existing refrigerator electric heating device is solved, and the effect of reducing energy consumption and improving user experience is achieved.
Patent Information
- Application Number
- CN202420376728.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-28
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-02-28
AI Technical Summary
The energy consumption is high when defrosting with electric heating devices in existing refrigerators, which affects the user experience.
A defrost device is designed to use the waste heat generated by the compressor to absorb heat and vaporize it through the liquid heat exchange medium in the heat exchange pipeline, and to move upwards to the heat release part to heat the defrost.
It reduces the energy consumption of the refrigerator, improves the user experience, and avoids the power consumption caused by the high power of the electric heating device.
Smart Images
Figure CN222634919U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of household appliances, for example, to a defrosting device and a refrigeration device. Background Art
[0002] A refrigerator is a household appliance that can lower the internal temperature to provide a low-temperature storage cavity for storing food or ingredients, thereby extending the shelf life of food or ingredients. A refrigerator generally consists of three parts: a cabinet, a refrigeration system, and a control system. During the flow of the refrigerant, heat exchange between the refrigerator storage cavity and the external environment can be completed through evaporation and condensation, thereby ensuring that the storage cavity is in a low-temperature state. During the refrigeration process of the refrigerator, the low temperature state of the evaporator may cause frost on its surface, thereby affecting the evaporator's cooling effect on the storage cavity.
[0003] In the related art, an electric heating device is generally installed at a position corresponding to the evaporator of the refrigerator. If the refrigerator determines that the evaporator is frosted, the electric heating device is turned on to heat and defrost 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] In the related art, the existing refrigerators are equipped with electric heating devices. Since the power of the electric heating devices is generally high, the use of the electric heating devices to defrost the evaporator consumes a lot of electricity, which results in a poor user experience.
[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content
[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.
[0008] The embodiments of the present disclosure provide a defrosting device and a refrigeration equipment. If frosting occurs on the evaporator, the waste heat generated by the compressor can be used to defrost the evaporator, thereby reducing the energy consumption of the refrigerator and improving the user experience.
[0009] The embodiment of the present disclosure provides a defrosting device, which is applied to a refrigeration device, wherein the refrigeration device includes a compressor and an evaporator, and the defrosting device includes a heat exchange pipeline. The heat exchange pipeline includes a heat absorption part corresponding to the compressor and a heat release part corresponding to the evaporator, and the height of the heat absorption part is lower than the height of the heat release part; wherein a heat exchange medium flows in the heat exchange pipeline; when the compressor is running, the liquid heat exchange medium in the heat absorption part can absorb the heat of the compressor and vaporize into a gaseous heat exchange medium.
[0010] In some embodiments, the defrosting device further comprises: a solenoid valve. The solenoid valve is arranged in the heat exchange pipeline and is located between the heat absorption part and the heat release part; wherein the solenoid valve can conduct or block the heat exchange pipeline.
[0011] In some embodiments, the distance between the solenoid valve and the heat absorption portion is a first distance L1, and the distance between the solenoid valve and the heat release portion is a second distance L2; wherein the first distance L1 is greater than the second distance L2.
[0012] In some embodiments, the heat exchange pipeline is arranged at an angle.
[0013] In some embodiments, the heat release portion is a capillary tube, and the heat release portion is wound around the evaporator.
[0014] In some embodiments, the diameter of the tube hole of the heat release portion is greater than or equal to the first diameter, and less than or equal to the second diameter.
[0015] In some embodiments, the heat absorbing portion is made of copper or aluminum.
[0016] In some embodiments, the heat release portion is made of copper or aluminum.
[0017] The embodiment of the present disclosure also provides a refrigeration device, comprising: a box, a compressor, an evaporator and the above-mentioned defrosting device. The box is provided with an installation cavity and a storage cavity; the compressor is installed in the installation cavity; the evaporator is installed in the box for cooling the storage cavity; wherein the heat absorption part and the heat release part of the defrosting device are respectively arranged corresponding to the compressor and the evaporator.
[0018] In some embodiments, the refrigeration device further comprises: a temperature sensor. The temperature sensor is used to obtain the temperature of the storage cavity; wherein the temperature sensor is electrically connected to the solenoid valve; when the temperature of the storage cavity is greater than or equal to a preset temperature, the solenoid valve is controlled to conduct the heat exchange pipeline.
[0019] The defrosting device and refrigeration equipment provided by the embodiments of the present disclosure can achieve the following technical effects:
[0020] The embodiment of the present disclosure provides a defrosting device, which is applied to a refrigeration device. The refrigeration device includes a compressor and an evaporator. The defrosting device includes: a heat exchange pipeline. The heat exchange pipeline includes a heat absorption part corresponding to the compressor and a heat release part corresponding to the evaporator, and the height of the heat absorption part is lower than the height of the heat release part; wherein a heat exchange medium flows in the heat exchange pipeline; when the compressor is running, the liquid heat exchange medium in the heat absorption part can absorb the heat of the compressor and vaporize into a gaseous heat exchange medium. In this way, if the evaporator is frosted, the compressor can heat the heat exchange medium in the heat absorption part to a first preset temperature so that the liquid heat exchange medium absorbs heat and vaporizes into a gaseous heat exchange medium. After the liquid heat exchange medium is vaporized into a gaseous heat exchange medium, the gaseous heat exchange medium can spontaneously move upward to the heat release part and heat and defrost the evaporator. In this way, if the evaporator is frosted, the waste heat generated by the compressor can be used to defrost the evaporator, which reduces the energy consumption of the refrigerator and improves the user experience.
[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:
[0023] Figure 1 is a cross-sectional view of a refrigeration device provided by an embodiment of the present disclosure;
[0024] Figure 2 is a structural schematic diagram of a defrosting device provided by an embodiment of the present disclosure;
[0025] Figure 3 is a partial structural schematic diagram of a defrosting device provided by an embodiment of the present disclosure;
[0026] Figure 4 is a partial structural schematic diagram of another defrosting device provided by an embodiment of the present disclosure;
[0027] Figure 5 It is a schematic diagram of the partial structure of another defrosting device provided in an embodiment of the present disclosure.
[0028] Reference numerals:
[0029] 10: box body; 11: storage cavity; 12: installation cavity;
[0030] 20: heat exchange pipeline; 21: heat absorption part; 22: heat release part;
[0031] 30: Solenoid valve;
[0032] 40: compressor;
[0033] 50: Evaporator. DETAILED DESCRIPTION
[0034] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.
[0035] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.
[0036] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. 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 "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" 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 a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection 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 stated, the term "plurality" means two or more.
[0039] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.
[0040] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.
[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.
[0042] The evaporator of an existing refrigerator may frost during the refrigeration process due to the low temperature, which will reduce the refrigeration effect of the evaporator. Therefore, an electric heating device is installed at a position corresponding to the evaporator in the existing refrigerator. When frost forms on the surface of the evaporator, the electric heating device can be turned on to heat the evaporator to defrost the evaporator.
[0043] However, generally, electric heating devices have high power, and using electric heating devices to defrost the evaporator consumes a lot of energy, thereby increasing the overall energy consumption of the refrigerator and causing poor user experience.
[0044] The embodiments of the present disclosure provide a defrosting device and a refrigeration equipment. If frosting occurs on the evaporator, the waste heat generated by the compressor can be used to defrost the evaporator, thereby reducing the energy consumption of the refrigerator and improving the user experience.
[0045] like Figures 1 to 5 As shown, the embodiment of the present disclosure provides a defrosting device 20, which is applied to a refrigeration device, and the refrigeration device includes a compressor 40 and an evaporator 50, and the defrosting device 20 includes: a heat exchange pipeline 20. The heat exchange pipeline 20 includes a heat absorption part 21 corresponding to the compressor 40 and a heat release part 22 corresponding to the evaporator 50, and the height of the heat absorption part 21 is lower than the height of the heat release part 22; wherein a heat exchange medium flows in the heat exchange pipeline 20; when the compressor 40 is running, the liquid heat exchange medium in the heat absorption part 21 can absorb the heat of the compressor 40 and vaporize into a gaseous heat exchange medium.
[0046] Specifically, the refrigeration device further includes a box body 10 provided with a storage cavity 11, and the evaporator 50 can cool the storage cavity 11. Figure 1 The heat exchange pipe 20 is fixedly installed on the box body 10, and the heat absorption part 21 and the heat release part 22 of the heat exchange pipe 20 are respectively arranged corresponding to the compressor 40 and the evaporator 50, as shown in FIG. Figure 2 The heat exchange pipeline 20 stores a heat exchange medium, and the heat exchange medium can flow between the heat absorption part 21 and the heat release part 22. The boiling point of the heat exchange medium is the first preset temperature.
[0047] When the refrigeration equipment is refrigerating, the compressor 40 can compress the refrigerant into a high-temperature and high-pressure gaseous refrigerant, which makes the compressor 40 also in a high-temperature state. Therefore, the waste heat generated by the compressor 40 can be used to make the compressor 40 a heat source for the defrosting device 20. If the evaporator 50 is frosted, the compressor 40 can heat the heat exchange medium in the heat absorption part 21 to a first preset temperature so that the liquid heat exchange medium absorbs heat and vaporizes into a gaseous heat exchange medium. Since the height of the heat release part 22 is higher than the height of the heat absorption part 21, after the liquid heat exchange medium in the heat absorption part 21 is vaporized into a gaseous heat exchange medium, the gaseous heat exchange medium can spontaneously move upward to the heat release part 22 and heat and defrost the evaporator 50. After the gaseous heat exchange medium in the heat release part 22 releases heat, the heat exchange medium will re-condense into a liquid heat exchange medium and flow to the heat absorption part 21 under the action of gravity to achieve circulation. With such arrangement, if frost forms on the evaporator 50, the waste heat generated by the compressor 40 can be used to defrost the evaporator 50, thereby reducing the energy consumption of the refrigerator and improving the user experience.
[0048] In practical applications, the heat exchange medium can be determined according to actual needs, as long as the boiling point of the heat exchange medium is lower than the temperature of the compressor 40, so that the heat generated by the compressor 40 can vaporize the liquid heat exchange medium in the heat absorption part 21 into a gaseous heat exchange medium.
[0049] In the above embodiment, the heat absorbing part 21 is provided in the form of covering the compressor 40 to improve the efficiency of the heat exchange medium in the heat absorbing part 21 absorbing the heat of the compressor 40. The heat releasing part 22 is provided in the form of covering the frosting area of the evaporator 50 to avoid incomplete defrosting.
[0050] like Figure 5 As shown, in some embodiments, the defrosting device 20 further includes: a solenoid valve 30. The solenoid valve 30 is disposed in the heat exchange pipeline 20 and is located between the heat absorption part 21 and the heat release part 22; wherein the solenoid valve 30 can conduct or block the heat exchange pipeline 20.
[0051] Specifically, when the evaporator 50 is not frosted, the solenoid valve 30 is closed to block the heat exchange pipeline 20, thereby preventing the high-temperature gaseous heat exchange medium of the heat absorption part 21 from flowing to the heat release part 22, which causes the refrigeration effect of the evaporator 50 to decrease. If the evaporator 50 is frosted, the solenoid valve 30 is opened to conduct the heat exchange pipeline 20. At this time, the gaseous heat exchange medium of the heat absorption part 21 can flow upward along the heat exchange pipeline 20 to the heat release part 22 to defrost the evaporator 50. In this way, while ensuring that the refrigerator uses the waste heat generated by the compressor 40 itself to defrost the evaporator 50, it can also reduce or avoid affecting the refrigeration effect of the refrigeration equipment.
[0052] like Figure 2As shown, in some embodiments, the distance between the solenoid valve 30 and the heat absorption part 21 is a first distance L1, and the distance between the solenoid valve 30 and the heat release part 22 is a second distance L2; wherein the first distance L1 is greater than the second distance L2.
[0053] Specifically, the distance between the solenoid valve 30 and the heat absorbing part 21 is greater than the distance between the solenoid valve 30 and the heat releasing part 22 , that is, the installation position of the solenoid valve 30 is closer to the heat releasing part 22 to reduce the volume of the heat releasing part 22 .
[0054] It is understandable that when the solenoid valve 30 conducts the heat exchange pipeline 20, the gaseous heat exchange medium in the heat absorption part 21 undergoes a process of approximately adiabatic expansion. In the process of adiabatic expansion, as the volume of the gaseous heat exchange medium increases, its temperature will also decrease accordingly. Therefore, reducing the volume of the heat release part 22 can reduce the volume of the gaseous heat exchange medium expansion, and then reduce the degree of temperature reduction of the gaseous heat exchange medium, so as to ensure the defrosting effect of the defrosting device 20 on the evaporator 50.
[0055] like Figure 2 As shown, in some embodiments, the heat exchange pipeline 20 is arranged inclined.
[0056] Specifically, the heat exchange pipeline 20 is arranged at an angle. In this way, after the gaseous heat exchange medium in the heat release part 22 is condensed into liquid heat exchange medium, the liquid heat exchange medium can flow along the side wall surface of the heat exchange pipeline 20 to the heat absorption part 21. Such an arrangement can prevent the liquid heat exchange medium from dripping directly to the heat absorption part 21, thereby increasing the service life of the heat exchange device.
[0057] Optionally, the angle between the heat exchange pipeline 20 and the vertical plane is greater than 0° and less than or equal to 60°. For example, the angle between the heat exchange pipeline 20 and the vertical plane may be 30°, 45° or 60°.
[0058] It is understandable that if the angle between the heat exchange pipeline 20 and the vertical plane is greater than 60°, the liquid heat exchange medium in the heat release part 22 may flow at a lower speed to the heat absorption part 21, thereby affecting the circulation of the heat exchange medium.
[0059] like Figure 4 As shown, in some embodiments, the heat release portion 22 is a capillary tube, and the heat release portion 22 is wound around the evaporator 50 .
[0060] Specifically, the heat radiation portion 22 is configured as a capillary tube, and the heat radiation portion 22 is wound around the evaporator 50 , so that the heat radiation area of the heat radiation portion 22 can be increased, thereby improving the defrosting efficiency of the evaporator 50 .
[0061] In practical applications, the form of the heat release part 22 wrapped around the evaporator 50 can be selected according to actual needs. For example, the user can wrap the heat release part 22 around the outside of the entire evaporator 50, or around the outside of the evaporation tube and / or fin of the evaporator 50.
[0062] In some embodiments, the diameter of the tube hole of the heat release portion 22 is greater than or equal to the first diameter, and less than or equal to the second diameter.
[0063] Specifically, the diameter of the tube hole of the heat radiation part 22 is greater than or equal to 1 mm and less than or equal to 8 mm. For example, the diameter of the tube hole of the heat radiation part 22 can be 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm or 8 mm.
[0064] like Figure 3 As shown, optionally, the heat absorption portion 21 is tubular, and the heat absorption portion 21 is wound around the outside of the compressor 40.
[0065] Specifically, when the heat absorbing part 21 is tubular, the compressor 40 is provided with a hook corresponding to the heat absorbing part 21. The user can hook the heat absorbing part 21 to the hook of the compressor 40 to prevent the heat absorbing part 21 from being displaced, thereby ensuring the efficiency of the heat absorbing part 21 in absorbing heat.
[0066] Optionally, the heat absorption portion 21 is cylindrical, and the heat absorption portion 21 is disposed on the outside of the compressor 40 .
[0067] Specifically, when the heat absorbing part 21 is cylindrical, the compressor 40 and the heat absorbing part 21 are provided with hooks and slots respectively. The user can connect the hook of the compressor 40 to the slot of the heat absorbing part 21 to prevent the heat absorbing part 21 from being displaced, thereby ensuring the efficiency of the heat absorbing part 21 in absorbing heat.
[0068] Optionally, the heat absorbing part 21 is arranged in close contact with the compressor 40. In this way, the efficiency of the heat absorbing part 21 absorbing the heat of the compressor 40 can be increased, so that the heat absorbing part 21 plays a role in heat dissipation for the compressor 40, thereby improving the stability of the operation of the refrigeration equipment.
[0069] In practical applications, the heat absorbing portion 21 can be arranged in close contact with the outer shell of the compressor 40, or in close contact with a certain heating part of the compressor 40, as long as the heat absorbing portion 21 can absorb the heat emitted by the compressor 40. The certain heating part of the compressor 40 includes but is not limited to the refrigerant discharge port.
[0070] In some embodiments, the heat absorption portion 21 is made of copper or aluminum.
[0071] Specifically, using copper or aluminum to make the heat absorbing portion 21 can further improve the efficiency of the heat absorbing portion 21 in absorbing the heat dissipated by the compressor 40 , thereby improving the efficiency of the defrosting device 20 in defrosting the evaporator 50 .
[0072] In some embodiments, the heat release portion 22 is made of copper or aluminum.
[0073] Specifically, using copper or aluminum to make the heat radiating portion 22 can further improve the efficiency of the heat radiating portion 22 in heating the evaporator 50 , thereby improving the efficiency of the defrosting device 20 in defrosting the evaporator 50 .
[0074] like Figure 1 As shown, the embodiment of the present disclosure further provides a refrigeration device, including: a box 10, a compressor 40, an evaporator 50 and the above-mentioned defrosting device 20. The box 10 is provided with a mounting cavity 12 and a storage cavity 11; the compressor 40 is installed in the mounting cavity 12; the evaporator 50 is installed in the box 10, and is used to refrigerate the storage cavity 11; wherein the heat absorption part 21 and the heat release part 22 of the defrosting device 20 are respectively arranged corresponding to the compressor 40 and the evaporator 50.
[0075] Specifically, the box body 10 is further provided with a fixing member. After the defrost device 20 is installed in the refrigeration equipment, the fixing member can fix the defrost device 20 to prevent the defrost device 20 from being displaced, thereby causing the defrost device 20 to collide with other structural members of the refrigeration equipment.
[0076] In a refrigeration device using the defrost device 20 provided in the present application, if frosting occurs on the evaporator 50, the defrost device 20 can use the waste heat generated by the compressor 40 to defrost the evaporator 50, thereby reducing the energy consumption of the refrigerator and improving the user experience.
[0077] In some embodiments, the refrigeration device further includes: a temperature sensor. The temperature sensor is used to obtain the temperature of the storage cavity 11; wherein the temperature sensor is electrically connected to the solenoid valve 30; when the temperature of the storage cavity 11 is greater than or equal to a preset temperature, the solenoid valve 30 is controlled to conduct the heat exchange pipeline 20.
[0078] Specifically, the temperature sensor includes a temperature measuring probe disposed in the storage cavity 11 , and the temperature measuring probe is used to obtain the temperature in the storage cavity 11 in real time or periodically.
[0079] It is understandable that if the evaporator 50 is frosted, the cooling effect of the evaporator 50 on the storage chamber 11 will be reduced, thereby causing the temperature in the storage chamber 11 to rise. Therefore, if the temperature probe detects that the temperature in the storage chamber 11 is greater than or equal to the preset temperature, it is determined that the evaporator 50 is frosted. At this time, the temperature sensor controls the solenoid valve 30 to open to conduct the heat exchange pipeline 20, thereby achieving defrosting of the evaporator 50.
[0080] In the above embodiment, the heat exchange pipeline 20 and the refrigerant circulation circuit of the refrigeration equipment are independent of each other, so that the refrigeration equipment can have both good refrigeration efficiency and good defrosting efficiency.
[0081] In the defrosting device provided in the present application, the heat exchange medium in the heat exchange pipeline 20 can absorb heat and vaporize in the heat absorption part 21 and release heat and condense in the heat release part 22, that is, the heat exchange medium undergoes a phase change heat transfer process.
[0082] When other conditions are the same, the latent heat involved in phase change heat exchange is usually greater than the sensible heat involved in conventional heat exchange, so phase change heat exchange is more conducive to the defrosting device to defrost the evaporator.
[0083] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims
1. A defrosting device, applied to a refrigeration device, the refrigeration device comprising a compressor and an evaporator, characterized in that: The defrosting device comprises: The heat exchange pipeline comprises a heat absorbing part arranged corresponding to the compressor and a heat releasing part arranged corresponding to the evaporator, and the height of the heat absorbing part is lower than the height of the heat releasing part; Wherein, a heat exchange medium flows in the heat exchange pipeline; When the compressor is running, the liquid heat exchange medium in the heat absorption part can absorb the heat of the compressor and vaporize into a gaseous heat exchange medium.
2. The defrosting device according to claim 1, characterized in that: Also includes: The solenoid valve is arranged in the heat exchange pipeline and is located between the heat absorbing part and the heat releasing part; Among them, the solenoid valve can open or block the heat exchange pipeline.
3. The defrosting device according to claim 2, characterized in that: The distance between the solenoid valve and the heat absorbing part is a first distance L1, and the distance between the solenoid valve and the heat releasing part is a second distance L2; The first distance L1 is greater than the second distance L2.
4. The defrosting device according to claim 1, characterized in that: The heat exchange pipeline is set at an angle.
5. The defrosting device according to claim 1, characterized in that: The heat release part is a capillary tube, and the heat release part is wound around the evaporator.
6. The defrosting device according to claim 5, characterized in that: The diameter of the tube hole of the heat radiation portion is greater than or equal to the first diameter, and less than or equal to the second diameter.
7. The defrosting device according to any one of claims 1 to 6, characterized in that: The heat absorbing part is made of copper or aluminum.
8. The defrosting device according to any one of claims 1 to 6, characterized in that: The heat dissipation part is made of copper or aluminum.
9. A refrigeration device, characterized in that: include: The box body is provided with an installation cavity and a storage cavity; A compressor is installed in the installation cavity; An evaporator, mounted on the box body, for cooling the storage cavity; and, The defrosting device according to any one of claims 1 to 8; The heat absorbing part and the heat releasing part of the defrosting device are respectively arranged corresponding to the compressor and the evaporator.
10. The refrigeration device according to claim 9, characterized in that: Also includes: A temperature sensor, used to obtain the temperature of the storage cavity; Wherein, the temperature sensor is electrically connected to the solenoid valve; When the temperature of the storage cavity is greater than or equal to a preset temperature, the solenoid valve is controlled to conduct the heat exchange pipeline.