Evaporation module and refrigeration equipment

Abstract

The present invention discloses an evaporation module and refrigeration equipment. The evaporation module includes: an evaporator; an electric heating component, disposed on the evaporator, for heating the evaporator to defrost; and a heat conducting plate, disposed at the bottom of the evaporator and in contact with the electric heating component. The heat conducting plate absorbs heat generated by the electric heating component to heat the evaporator to defrost. The heat conducting plate is disposed at the bottom of the evaporator to increase the heat dissipation area, thereby improving defrosting efficiency and optimizing the defrosting effect.

Description

Technical Field

[0001] The present invention belongs to the field of refrigeration technology, and in particular relates to an evaporation module and a refrigeration device. Background Art

[0002] Refrigeration equipment (such as refrigerators or freezers) is a household appliance commonly used in daily life. Refrigeration equipment is typically equipped with a refrigeration assembly to complete the refrigeration process. The refrigeration assembly typically includes a compressor, condenser, throttling device, and evaporator, all connected together. Since the evaporator needs to be defrosted regularly during actual use, the defrosted water produced during the defrosting process is collected in a water collection tray located at the bottom of the evaporator. Typically, an electric heating element is provided on the evaporator to defrost the evaporator. The electric heating element is typically located at the bottom of the evaporator. During the defrosting process, the electric heating element is energized and heated. Areas of the evaporator near the electric heating element defrost faster, while areas farther from the electric heating element defrost less effectively. Therefore, it takes a longer time to complete the defrosting process, resulting in lower defrosting efficiency and higher energy consumption. The technical problem to be solved by the present invention is how to design a refrigeration device with an excellent defrosting effect to improve defrosting efficiency and reduce energy consumption. Summary of the Invention

[0003] In view of the technical problems existing in the prior art, the present invention provides an evaporation module and a refrigeration device. A heat conducting plate is arranged at the bottom of the evaporator, and the heat conducting plate is used to increase the heat dissipation area to improve the defrosting efficiency and optimize the defrosting effect.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] The invention provides an evaporation module, comprising:

[0006] evaporator;

[0007] An electric heating component is provided on the evaporator and is used for heating the evaporator to defrost;

[0008] A heat conducting plate is provided at the bottom of the evaporator and contacts the electric heating component. The heat conducting plate is used to absorb heat generated by the electric heating component to heat the evaporator for defrosting.

[0009] Furthermore, the electric heating component is an electric heating tube, which is arranged at the bottom of the evaporator; a groove is provided on the heat conducting plate, and the electric heating tube is also arranged in the groove.

[0010] Furthermore, the heat conducting plate is provided with a raised table surface, and the groove is formed on the raised table surface.

[0011] Furthermore, the electric heating component is an electric heating plate, the upper surface of the electric heating plate is in contact with the evaporator, and the lower surface of the electric heating plate is in contact with the heat conducting plate.

[0012] Furthermore, a plurality of drainage holes are provided on the heat conducting plate.

[0013] Furthermore, a plurality of protruding heat dissipation structures are provided on the heat conducting plate.

[0014] The present invention also provides a refrigeration device, including a cabinet and a refrigeration unit, the cabinet forming a storage cavity, the refrigeration unit installed on the cabinet, the refrigeration unit including a compressor, a condenser and a throttling device, the refrigeration unit also including the above-mentioned evaporation module; the compressor, the condenser, the throttling device and the evaporator of the evaporation module are connected to form a refrigeration circuit.

[0015] Furthermore, the refrigeration unit is located on the top of the cabinet; the refrigeration unit also includes a bottom plate, on which an air outlet and a return air outlet communicating with the storage cavity are provided; a water collecting pan is also provided on the bottom plate, and the water collecting pan is located between the air outlet and the return air outlet; a cover is also provided on the bottom plate, and the cover covers the air outlet, the return air outlet and the water collecting pan, and the cover and the bottom plate form an evaporation cavity, the evaporation module is provided in the evaporation cavity and above the water collecting pan, and an opening is also provided on the cover; a cold leakage prevention component is provided in the opening, and a first drainage gap is provided on the cold leakage prevention component for discharging water in the water collecting pan to the outside.

[0016] Furthermore, a water flow channel is formed between the anti-leakage cold component and the bottom plate, and the anti-leakage cold component is provided with a first shielding portion located at the outer end of the water flow channel, and the first shielding portion is provided with the first drainage gap; the anti-leakage cold component is provided with a second shielding portion located inside the water flow channel, and the second shielding portion is provided with a second drainage gap.

[0017] Furthermore, an air guide ring is provided on the return air port, an evaporation fan is provided in the air guide ring, and the air guide ring and the evaporation fan are located in the evaporation cavity;

[0018] The refrigeration unit also includes:

[0019] A flow guide component is provided on the base plate and located in the evaporation chamber, and is used for guiding condensed water formed on the cover shell to the water receiving tray.

[0020] Compared with the prior art, the advantages and positive effects of the present invention are: by configuring a heat conduction plate at the bottom of the evaporator, the electric heating component on the evaporator is also in contact with the heat conduction plate to transfer part of the heat directly to the heat conduction plate. The heat dissipation area of ​​the heat conduction plate is large, and by utilizing the principle of rising hot air, the heat emitted by the heat conduction plate can cover the bottom of the evaporator and heat the evaporator evenly. On the one hand, the heat generated by the electric heating component can be fully utilized to evenly heat the evaporator to improve the defrosting efficiency. On the other hand, the power-on heating time of the electric heating component can be shortened to reduce energy consumption.

[0021] Other features and advantages of the present invention will become more apparent after reading the detailed description of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a schematic structural diagram of an embodiment of a refrigeration device of the present invention;

[0024] Figure 2 This is a schematic structural diagram of a refrigeration unit in an embodiment of a refrigeration device of the present invention;

[0025] Figure 3 This is a schematic structural diagram of an evaporation module in an embodiment of a refrigeration device of the present invention;

[0026] Figure 4 This is a schematic structural diagram of a heat conducting plate in an embodiment of a refrigeration device of the present invention;

[0027] Figure 5 This is an exploded view of the assembly of the base plate, the cover and the anti-leakage cooling component in the embodiment of the refrigeration equipment of the present invention;

[0028] Figure 6 This is a schematic structural diagram of a cold leakage prevention component in an embodiment of a refrigeration device of the present invention;

[0029] Figure 7 This is an assembly diagram of the base plate and the guide assembly in an embodiment of the refrigeration equipment of the present invention;

[0030] Figure 8 Schematic diagram of the structure of the flow guide in the refrigeration equipment embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0032] It should be noted that in the description of the present invention, terms such as "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] like Figure 1-Figure 4 As shown, the refrigeration equipment of this embodiment includes a cabinet 1 and a refrigeration unit 2. A storage cavity is formed in the cabinet 1, and a door 10 is also provided on the cabinet 1 to open and close the storage cavity. The refrigeration unit 2 includes a base plate 21 and a refrigeration assembly 22. The refrigeration assembly 22 is mounted on the base plate 21. The refrigeration assembly 22 includes a compressor 221, a condenser 222, a throttling device (not shown), and an evaporation module 223 connected together. The evaporation module 223 includes an evaporator 2231 and an electric heating component 2232. The compressor 221, the condenser 222, the throttling device (not shown), and the evaporator 2231 are connected to form a refrigeration circuit. Among them, the electric heating component 2232 is used for electrically heating to defrost the evaporator 2231. In order to improve the defrosting efficiency, a heat conducting plate 2233 is provided at the bottom of the evaporator 2231. The heat conducting plate 2233 is in contact with the electric heating component 2232. The heat conducting plate 2233 is used to absorb part of the heat generated by the electric heating component 2232 to heat the evaporator 2231 for defrosting.

[0034] Specifically, during the defrosting process, the electric heating element 2232 of the evaporator 2231 is powered on to heat the evaporator 2231. While the electric heating element 2232 directly releases heat to heat the evaporator 2231, some of the heat generated by the electric heating element 2232 is absorbed by the heat conducting plate 2233. The heat conducting plate 2233 rapidly conducts heat, evenly distributing the absorbed heat across its surface. As the entire heat conducting plate 2233 absorbs heat from the electric heating element 2232, its temperature rises. By leveraging the principle that hot air rises, the heat is evenly released at the bottom of the evaporator 2231 through the heat conducting plate 2233, providing more comprehensive and uniform heating of the evaporator 2231 and effectively improving defrosting efficiency. This effectively addresses the issue of prolonged defrosting and poor defrosting results resulting from using only localized heating from the electric heating element 2232. The heat conducting plate 2233 can cover the entire lower area of ​​the evaporator 2231 at the bottom to ensure that the entire cross section of the evaporator 2231 can be heated by the hot air released by the heat conducting plate 2233 to perform efficient defrosting.

[0035] The electric heating component 2232 can be implemented in various physical forms. For example, the electric heating component 2232 can be an electric heating plate, with the upper surface of the electric heating plate resting against the evaporator 2231 and the lower surface of the electric heating plate resting against the heat conducting plate 2233. Alternatively, the electric heating component 2232 can be an electric heating tube, which is disposed at the bottom of the evaporator 2231. To increase the contact area between the electric heating tube and the heat conducting plate 2233 and improve heat transfer efficiency, the heat conducting plate 2233 is provided with a groove 22331, in which the electric heating tube is further disposed. Specifically, the electric heating tube is fixedly mounted at the bottom of the evaporator 2231, with a portion of the electric heating tube being retained in the groove 22331 to increase the contact area between the electric heating tube and the heat conducting plate 2233. In this way, the heat generated by the electric heating tube when energized can be quickly transferred to the heat conducting plate 2233 through the groove 22331, causing the heat conducting plate 2233 to heat up quickly. To increase the heat dissipation area, the heat conducting plate 2233 is also provided with a number of raised heat dissipation structures 22334. The raised heat dissipation structures 22334 protrude upward toward the evaporator 2231. The raised heat dissipation structures 22334 further increase the heat dissipation area, thereby improving the heating and defrosting efficiency. Since the evaporator 2231 can adopt a plate heat exchanger or a fin-type evaporator, if the evaporator 2231 adopts a fin-type heat exchanger, tube sheets 22310 are configured on both sides of the evaporator 2231 for mounting refrigerant tubes. The refrigerant tubes are provided with fins, and the electric heating tubes can be mounted on the tube sheets 22310 in the same manner as the refrigerant tubes.

[0036] Preferably, to facilitate connection between the heat conducting plate 2233 and the evaporator 2231 and ensure good heat transfer between the heat conducting plate 2233 and the electric heating tubes, the heat conducting plate 2233 is provided with raised surfaces 22332, each of which has grooves 22331 formed therein. Specifically, the heat conducting plate 2233 is formed with multiple raised surfaces 22332 projecting toward the evaporator 2231, while the grooves 22331 are formed in the raised surfaces 22332. This facilitates contact with the electric heating tubes on the evaporator 2231 for heat transfer. The tube sheets 22310 on either side of the evaporator 2231 can be fixedly mounted on the heat conducting plate 2233, and the evaporator 2231 can be mounted on the base plate 21 using the heat conducting plate 2233.

[0037] Furthermore, a water receiving pan 213 is typically provided on the bottom plate 21 at the bottom of the evaporator 2231. To ensure that defrost water from the evaporator 2231 can drain smoothly into the water receiving pan 213, the heat conducting plate 2233 is also provided with a plurality of drainage holes 22333. Specifically, during the defrosting process of the evaporator 2231, the defrost water generated by the defrosting on the evaporator 2231 flows through the heat conducting plate 2233 below, and then flows through the drainage holes 22333 of the heat conducting plate 2233 into the water receiving pan 213 below. This prevents the placement of the heat conducting plate 2233 at the bottom of the evaporator 2231 from interfering with the drainage of the defrost water. While improving defrosting efficiency through the heat conducting plate 2233, it also ensures that the defrost water can flow smoothly into the water receiving pan 213.

[0038] By disposing a heat conducting plate at the bottom of the evaporator, the electric heating element on the evaporator also contacts the heat conducting plate to transfer some of the heat directly to the heat conducting plate. The heat conducting plate has a large heat dissipation area. Utilizing the principle that hot air rises, the heat emitted by the heat conducting plate can cover the bottom of the evaporator and evenly heat the evaporator. On the one hand, the heat generated by the electric heating element can be fully utilized to evenly heat the evaporator to improve defrosting efficiency. On the other hand, the heating time of the electric heating element can be shortened to reduce energy consumption. In addition, the crushed ice that falls from the evaporator during defrosting is collected on the heat conducting plate, which has been heated by the electric heating element. The melted ice blocks, crushed ice, and water mixture fall onto the heated heat conducting plate, which can accelerate the melting of the ice blocks and crushed ice. In this way, the melted water flows directly into the water receiving tray below, eliminating the need for an additional electric heating element in the water receiving tray to melt the ice blocks and crushed ice that falls from the evaporator. This reduces energy consumption and improves the energy utilization rate of the heating tube.

[0039] Based on the above technical solution, optional, such as Figures 1-8As shown, the refrigeration unit 2 can be installed on the upper part of the cabinet 1 or on the lower part of the cabinet 1 as needed. When the refrigeration unit 2 is installed on the upper part of the cabinet 1, an air outlet 211 and a return air outlet 212 connected to the storage cavity are provided on the bottom plate 21, and a water receiving tray 213 is located between the air outlet 211 and the return air outlet 212. In order to form an evaporation cavity for installing the evaporator 2231, the refrigeration unit 2 also includes a cover 23, which is installed on the bottom plate 21 and covers the air outlet 211, the return air outlet 212 and the water receiving tray 213. The cover 23 and the bottom plate 21 form an evaporation cavity, and the evaporator is arranged in the evaporation cavity and is located above the water receiving tray 213. Among them, in order to ensure that the water in the water receiving tray 213 is smoothly output to the outside of the evaporation chamber while reducing the loss of coldness in the evaporation chamber, an opening 231 is also provided on the cover shell 23; at the same time, an anti-cold leakage component 3 is provided in the opening 231, and the anti-cold leakage component 3 is provided with a first drainage gap 301 for discharging the water in the water receiving tray 213 to the outside.

[0040] Specifically, a refrigeration unit 2 is arranged on the top of the cabinet 1 of the refrigeration equipment of this embodiment, and the refrigeration unit 2 is fixed to the top of the cabinet 1 through the base plate 21, and the air outlet 211 and the return air outlet 212 on the base plate 21 are connected to the storage cavity in the cabinet 1 to realize the circulation of air between the evaporation cavity and the storage cavity, wherein an evaporation fan 24 is arranged in the evaporation cavity. Under the action of the evaporation fan 24, the air in the storage cavity enters the evaporation cavity through the return air outlet 212 and exchanges heat with the evaporator 2231 to form cold air. The cold air will be input into the storage cavity through the air outlet 211 to realize the cooling of the items in the storage cavity. During the defrosting process of the evaporator 2231, the defrosted water collected in the water receiving tray 213 at the bottom is provided with a drainage channel 2131 extending toward the opening 231. The water in the water receiving tray 213 is directed through the drainage channel 2131 toward the opening 231 and ultimately discharged from the opening 231 to the outside of the evaporation chamber. The water discharged from the water receiving tray 213 passes through the anti-leakage cooling member 3 as it flows through the opening 231. The water enters the anti-leakage cooling member 3 through the opening 231 and ultimately drains out through the first drainage slit 301. The first drainage slit 301 in the anti-leakage cooling member 3 satisfies the requirement for external drainage. Furthermore, due to the small size of the first drainage slit 301, under normal cooling conditions, since the anti-leakage cooling member 3 is inserted into and blocks the opening 231, the amount of cold air leaking out of the evaporation chamber through the first drainage slit 301 is minimal, effectively reducing cold air leakage and improving cooling efficiency.

[0041] A water channel is formed between the cooling leak prevention component 3 and the drainage channel 2131 on the bottom plate 21. The cooling leak prevention component 3 is equipped with a first shielding portion located at the outer end of the water channel, and the first shielding portion is provided with a first drainage slit 301. Specifically, the cooling leak prevention component 3 is inserted into the opening 231 and covers the drainage channel 2131. The first shielding portion disposed on the exterior of the cooling leak prevention component 3 can shield the end of the water channel located outside the evaporation chamber, thereby more effectively reducing cooling loss. Preferably, the cooling leak prevention component 3 is equipped with a second shielding portion located within the water channel, and the second shielding portion is provided with a second drainage slit 302. Specifically, the second shielding portion within the water channel achieves a double barrier. Water from the water receiving tray 213 is discharged sequentially through the second drainage slit 302 and the first drainage slit 301. The cooling energy within the evaporation chamber is blocked by the two shielding portions, effectively limiting cooling loss and further improving the cooling effect.

[0042] In addition, the specific embodiment of the cold leakage prevention component 3 may include: a top plate 31; two side plates 32; a first baffle 33; and a second baffle 34. The side plates 32 are connected to corresponding sides of the top plate 31 and are located below the top plate 31. The first baffle 33 is connected to one end of the top plate 31 and is located below the top plate 31. The first baffle 33 is disposed outside the evaporation chamber and is provided with a first drainage slit 301. The first baffle 33 forms a first shielding portion. The second baffle 34 is connected to the middle portion of the top plate 31 and is located below the top plate 31. The second baffle 34 is provided with a second drainage slit 302. The second baffle 34 forms a second shielding portion. Specifically, the cold leakage prevention component 3 is a shell-like structure with one end open. On the one hand, the cold leakage prevention component 3 can effectively cover the drainage channel 2131, and on the other hand, it can more closely abut the edge of the opening 231 to block the opening 231. To facilitate assembly of the anti-leakage cooling component 3, a snap-in interface 321 is provided on the side panel 32, while a raised rib 214 is provided on the bottom panel 21 to positionally secure the housing 23. The drainage channel 2131 extends through the rib 214 to the exterior of the evaporation chamber. The side panel 32 of the anti-leakage cooling component 3 is snapped onto the rib 214 via the snap-in interface 321, sandwiching the drainage channel 2131 between the two side panels 32. This allows the anti-leakage cooling component 3 to enclose the drainage channel 2131, ensuring smooth drainage of water from the drainage channel 2131 while effectively reducing the amount of cooling air leaking from the drainage channel 2131. Furthermore, to improve drainage efficiency, a third drainage gap 303 is formed between the corresponding ends of the first baffle 33 and the side panel 32, and a fourth drainage gap 304 is formed between the second baffle 34 and the inner surface of the side panel 32.

[0043] In addition, the water discharged from the evaporation chamber can flow directly onto the bottom plate 21, where it can be automatically evaporated using the heat generated by the compressor 221 and condenser 222 outside the evaporation chamber. Of course, a drainage hole (not shown) can be provided on the bottom plate 21. The drainage hole is located at a lower position than the bottom plate 21 and is connected to a drainage pipe. The water discharged from the evaporation chamber flows into the drainage hole and is discharged through the drainage pipe. This embodiment does not limit the subsequent treatment method of the water discharged from the evaporation chamber.

[0044] By arranging an opening on the cover shell, the evaporation chamber is connected with the outside through the opening, and an anti-cold leakage component is provided in the opening, and a drainage gap is provided on the anti-cold leakage component to meet the requirement that the water in the water receiving tray is discharged to the outside of the evaporation chamber; at the same time, the anti-cold leakage component is inserted into the opening to seal the opening. Since the drainage gap is small, the drainage gap can effectively reduce the loss of cold air in the evaporation chamber under the premise of meeting the drainage requirements, thereby achieving the reduction of cold air leakage in the evaporation chamber while meeting the requirement of smooth discharge of defrost water, thereby improving the cooling effect and reducing energy consumption.

[0045] Furthermore, during the cooling operation of the evaporator 2231, the temperature inside the evaporation chamber is relatively low, and the air inside the storage chamber is affected by the moisture contained in the items inside. After the air in the storage chamber enters the evaporation chamber from the return air inlet 212, it condenses into water droplets upon contact with the lower-temperature housing 23, and the condensed water flows down the housing 23 onto the bottom plate 21. To ensure that the condensed water flowing down the housing 23 is smoothly diverted to the water receiving tray 213 for discharge, thereby preventing water from accumulating on the bottom plate 21 and overflowing from the return air inlet 212, an air guide ring 215 is provided on the return air inlet 212, and a flow guide assembly is provided on the bottom plate 21 inside the evaporation chamber. The flow guide assembly is used to divert the condensed water formed on the housing 23 to the water receiving tray 213. Specifically, the condensation formed on the cover 23 flows downward to the guide assembly under the action of gravity, and then the condensation water will be guided by the guide assembly into the water receiving tray 213. In this way, the condensation water can be collected by the water receiving tray 213 and discharged to the outside of the evaporation chamber. Among them, one side wall of the guide assembly abuts against the peripheral wall of the air guide ring 215, one side wall of the guide assembly abuts against the water receiving tray 213, and one side wall of the guide assembly abuts against the inner wall of the cover 23. The condensation water condensed on the cover 23 flows along the inner wall of the cover 23 to the guide assembly, and the guide assembly guides the condensation water dripping on it into the water receiving tray 213.

[0046] Furthermore, the flow guide assembly may include two flow guides 100, which are located on either side of the air guide ring 215. A certain space is defined between the water receiving tray 213 and the air guide ring 215. The space between the water receiving tray 213 and one side of the air guide ring 215 is designated as space A10, and the space between the water receiving tray 213 and the other side of the air guide ring 215 is designated as space B20. One flow guide 100 is located within space A10, and the other flow guide 100 is located within space B20. These flow guides are used to guide condensation flowing down the inner wall of the housing 23 into the water receiving tray 213, thereby allowing for timely discharge of the condensation. The outer contour of the flow guide 100 is determined by the specific shapes of space A10 and space B20.

[0047] The body guide 100 includes a first sidewall 110, a second sidewall 120, a third sidewall 130, and a guide surface 140. The guide surface 140 intersects with the first sidewall 110, the second sidewall 120, and the third sidewall 130, respectively. The first sidewall 110 fits and abuts the outer side of the air guide ring 215, the second sidewall 120 fits and abuts the sidewall of the water receiving tray 213, and the third sidewall 130 fits and abuts the inner wall of the housing 23. The surface of the body guide 100 facing away from the guide surface 140 is called the bottom surface. The bottom surface is a flat surface that abuts the bottom plate 21. To achieve its diversion function, the guide surface 140 is configured as an inclined surface, gradually descending from the side away from the water receiving tray 213 to the side close to the water receiving tray 213, and gradually descending from the side close to the air guide ring 215 to the side away from the air guide ring 215.

[0048] The side where the cover shell 23 abuts the third side wall 130 is an arc-shaped structure. Correspondingly, the third side wall 130 is also set to an arc-shaped structure, so that the third side wall 130 can better fit and abut against the inner wall of the cover shell 23, so that the condensation water flowing down the cover shell 23 can flow to the guide surface 140.

[0049] To prevent condensation dripping onto the guide surface 140 from flowing out of the return air port 212, the intersection (marked S) between the first sidewall 110 and the guide surface 140 is set higher than the air guide ring 215. To prevent condensation dripping onto the guide surface 140 from flowing smoothly into the water receiving pan 213, the intersection (marked P) between the second sidewall 120 and the guide surface 140 is set higher than the sidewalls of the water receiving pan 213. Condensation condensed on the housing 23 flows down the inner wall of the housing 23 onto the guide surface 140, where it then flows into the water receiving pan 213.

[0050] The inclination angle of the guide surface 140 from the side away from the water receiving tray 213 to the side close to the water receiving tray 213 is 8-12°, preferably 10°; the inclination angle of the guide surface 140 from the side close to the air guide ring 215 to the side away from the air guide ring 215 is 8-12°, preferably 10°.

[0051] In order to prevent the condensation water dripping on the guide surface 140 near the return air outlet 212 from splashing and leaking out of the return air outlet 212, this embodiment provides a water retaining rib 141 on the side of the guide surface 140 near the air guide ring 215, and the water retaining rib 141 extends along the intersection of the guide surface 140 and the first side wall 110.

[0052] When the two guide bodies 100 are installed on the base plate 21, the side of the guide surface 140 away from the air guide ring 215 is retracted into the side wall of the water receiving tray 213 abutting against it, so as to ensure that the condensation water on the guide surface 140 can flow into the water receiving tray 213 instead of flowing to the outside of the water receiving tray 213.

[0053] The two guide bodies 100 are both made of high-density thermal insulation foam, so that the guide bodies 100 can achieve the function of guiding flow while also having the function of thermal insulation, thereby reducing the loss of cold in the evaporation chamber.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A refrigeration device, comprising a cabinet and a refrigeration unit, wherein the cabinet forms a storage cavity, the refrigeration unit is mounted on the cabinet, and the refrigeration unit comprises a compressor, a condenser, and a throttling device, characterized in that: The refrigeration unit further includes an evaporation module; the compressor, the condenser, the throttling device and the evaporator of the evaporation module are connected to form a refrigeration circuit; The evaporation module comprises: evaporator; An electric heating component is provided on the evaporator and is used for heating the evaporator to defrost; a heat conducting plate, the heat conducting plate being arranged at the bottom of the evaporator and in contact with the electric heating component, the heat conducting plate being used to absorb heat generated by the electric heating component to heat the evaporator for defrosting; The refrigeration unit is located on the top of the cabinet; the refrigeration unit also includes a bottom plate, on which an air outlet and an air return port communicating with the storage cavity are provided; the bottom plate is also provided with a water receiving tray, which is located between the air outlet and the air return port; The bottom plate is further provided with a cover shell, the cover shell covers the air outlet, the return air outlet and the water receiving tray, the cover shell and the bottom plate form an evaporation cavity, the return air outlet is provided with an air guide ring, the air guide ring is provided with an evaporation fan, and the air guide ring and the evaporation fan are located in the evaporation cavity; The refrigeration unit also includes: a flow guide component, which is arranged on the bottom plate and located in the evaporation chamber; the flow guide component includes two flow guide bodies, which are arranged on both sides of the air guide ring and are sandwiched between the air guide ring and the cover shell; the flow guide body includes a first side wall, a second side wall, a third side wall and a flow guide surface, and the flow guide surface is respectively connected and intersected with the first side wall, the second side wall and the third side wall, the first side wall abuts against the outer peripheral wall of the air guide ring, the second side wall abuts against the side wall of the water receiving tray, and the third side wall abuts against the inner wall of the cover shell, the intersection position of the first side wall and the flow guide surface is higher than the end face of the air guide ring, and the intersection position of the second side wall and the flow guide surface is higher than the side wall of the water receiving tray.

2. The refrigeration equipment according to claim 1, characterized in that The electric heating component is an electric heating tube, which is arranged at the bottom of the evaporator; a groove is provided on the heat conducting plate, and the electric heating tube is also arranged in the groove.

3. The refrigeration equipment according to claim 2, characterized in that The heat conducting plate is provided with a raised table surface, and the groove is formed on the raised table surface.

4. The refrigeration equipment according to claim 1, characterized in that The electric heating component is an electric heating plate, the upper surface of the electric heating plate is in contact with the evaporator, and the lower surface of the electric heating plate is in contact with the heat conducting plate.

5. The refrigeration equipment according to claim 1, characterized in that The heat conducting plate is also provided with a plurality of drainage holes.

6. The refrigeration equipment according to claim 1, characterized in that The heat conducting plate is also provided with a plurality of protruding heat dissipation structures.

7. The refrigeration equipment according to claim 1, characterized in that The evaporation module is arranged above the water receiving tray, and the cover shell is further provided with an opening; a cold leakage prevention component is provided in the opening, and the cold leakage prevention component is provided with a first drainage gap for discharging water in the water receiving tray to the outside.

8. The refrigeration equipment according to claim 7, characterized in that A water flow channel is formed between the anti-leakage cold component and the bottom plate, and the anti-leakage cold component is provided with a first shielding portion located at the outer end of the water flow channel, and the first drainage gap is provided on the first shielding portion; the anti-leakage cold component is provided with a second shielding portion located inside the water flow channel, and the second shielding portion is provided with a second drainage gap.

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