Refrigeration appliance

Abstract

The application provides a refrigeration device. It comprises: an inner container; a heat-conducting plate arranged in the inner container, which divides the inner space of the inner container into a refrigeration air duct and a storage chamber; an evaporator arranged in the refrigeration air duct; an air duct cover plate which forms a turbulence air duct together with the heat-conducting plate, and cold energy in the refrigeration air duct is conducted to the turbulence air duct through the heat-conducting plate; a fan box which is provided with a turbulence fan air inlet and a turbulence fan air outlet, the turbulence fan air outlet is communicated with the turbulence air duct air inlet, the turbulence fan air inlet is communicated with the storage chamber, and the turbulence fan air inlet comprises a lower air inlet arranged on the bottom wall of the fan box; a turbulence fan arranged in the fan box and used for promoting the gas flow among the storage chamber, the fan box and the turbulence air duct. In this way, the temperature fluctuation of the storage chamber can be reduced, and the uniformity of the temperature in the storage chamber can be improved.

Description

Technical Field

[0001] This application relates to the field of home appliances, and more particularly to a refrigeration device. Background Technology

[0002] In existing technologies, refrigeration equipment is widely used in storage scenarios for items such as food, pharmaceuticals, and tobacco, which have high requirements for storage temperature and humidity. Cigar cabinets, as a type of refrigeration equipment specifically designed for cigar storage, require maintaining a constant low temperature while controlling humidity fluctuations to preserve the flavor and quality of the cigars. Traditional refrigeration equipment often uses forced air cooling, which involves using a fan to directly deliver low-temperature air from near the evaporator to the storage space for rapid cooling. However, this direct airflow cooling method has certain limitations in practical applications. Direct air cooling can lead to uneven airflow distribution within the storage space, easily causing localized overcooling or overheating, resulting in temperature fluctuations in the storage environment. For highly sensitive items such as cigars and wine, short-term drastic changes in temperature and humidity can cause problems such as quality degradation, cracking, or mold growth. Therefore, how to better supply cooling to the storage compartment is a key technological challenge in the design of current refrigeration equipment, especially cigar cabinets. Utility Model Content

[0003] The purpose of this application is to provide a refrigeration device that transfers the cold air from the refrigeration duct to the turbulence duct through a heat-conducting plate, and sets a lower air inlet on the fan box, which can reduce temperature fluctuations in the storage room and improve the temperature uniformity in the storage room.

[0004] To achieve the above-mentioned application objectives, one embodiment of this application provides a refrigeration device, characterized in that it includes:

[0005] Inner liner;

[0006] A heat-conducting plate is disposed inside the inner liner, which divides the internal space of the inner liner into a cooling air duct and a storage compartment.

[0007] An evaporator is disposed within the refrigeration duct;

[0008] A duct cover plate covers the side of the heat-conducting plate away from the cooling duct. The duct cover plate and the heat-conducting plate form a turbulent air duct. The cold air in the cooling duct is conducted to the turbulent air duct through the heat-conducting plate. The turbulent air duct includes a turbulent air duct inlet and a turbulent air duct outlet. The turbulent air duct outlet is connected to the storage compartment.

[0009] A fan box is disposed at the bottom of the storage room. The fan box is provided with a turbulence fan inlet and a turbulence fan outlet. The turbulence fan outlet is connected to the turbulence duct inlet. The turbulence fan inlet is connected to the storage room. The turbulence fan inlet includes a lower inlet disposed on the bottom wall of the fan box.

[0010] A turbulence fan is disposed within the fan box and is used to promote gas flow between the storage chamber, the fan box, and the turbulence duct.

[0011] In one embodiment of this application, the turbulence fan inlet includes a forward air inlet disposed on the front wall of the fan box.

[0012] In one embodiment of this application, the refrigeration device includes a water storage box disposed in the storage room, the water storage box being located below the fan box, the fan box including a front protrusion protruding forward relative to the water storage box, the bottom wall of the front protrusion forming the lower air inlet, and the front wall of the front protrusion forming the forward air inlet.

[0013] In one embodiment of this application, the upper end of the water storage box is open, and the fan box is further provided with:

[0014] The humidifying air intake duct includes a first humidifying air intake that communicates with the storage compartment and a second humidifying air intake that communicates with the water storage box.

[0015] The humidifying air outlet duct includes a first humidifying air outlet connected to the storage compartment and a second humidifying air outlet connected to the water storage box.

[0016] A humidifying fan is installed inside the humidifying air inlet duct. The humidifying fan is used to cause the gas in the storage room to enter the water storage box through the humidifying air inlet duct for humidification, and then return to the storage room through the humidifying air outlet duct.

[0017] In one embodiment of this application, the heat-conducting plate is disposed at the rear of the inner liner, the heat-conducting plate is spaced apart from the rear wall of the inner liner, the fan box is disposed at the bottom of the storage chamber, and the rear end of the top wall of the fan box forms the air outlet of the turbulence fan.

[0018] In one embodiment of this application, the duct cover and the lower end of the heat-conducting plate surround to form the turbulence duct inlet, and the left side wall, right side wall and front side wall of the duct cover are all formed with the turbulence duct outlet.

[0019] In one embodiment of this application, the inner liner includes a first inner liner wall spaced apart from the heat-conducting plate, and the refrigeration device further includes:

[0020] A partition is disposed between the first inner wall and the heat-conducting plate, the partition dividing the cooling air duct into a first air duct section and a second air duct section, the second air duct section being closer to the first inner wall than the first air duct section, and the evaporator being disposed in the second air duct section;

[0021] A cooling fan is disposed within the first air duct section, and the cooling fan is used to promote gas flow between the first air duct section and the second air duct section.

[0022] As one embodiment of this application, the lower air inlet includes a plurality of strip-shaped openings arranged side by side in the left-right direction.

[0023] In one embodiment of this application, the duct cover is connected to the heat-conducting plate by a snap-fit ​​structure and / or fasteners.

[0024] In one embodiment of this application, the heat-conducting plate is connected to the inner liner via a snap-fit ​​structure and / or fasteners.

[0025] Compared with the prior art, this application uses a heat-conducting plate to transfer the cold air from the cooling duct to the turbulence duct, and sets a lower air inlet on the fan box. Its beneficial effects are: it can reduce the temperature fluctuation of the storage room and improve the temperature uniformity of the storage room. Attached Figure Description

[0026] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings, wherein:

[0027] Figure 1 This is a schematic diagram of the structure of a refrigeration device according to one embodiment of this application;

[0028] Figure 2 yes Figure 1 A schematic diagram of the structure of the refrigeration equipment after the door is removed;

[0029] Figure 3 This is a cross-sectional view of a refrigeration device according to an embodiment of this application;

[0030] Figure 4 yes Figure 3 The exploded view of the refrigeration equipment shown;

[0031] Figure 5 This is a schematic diagram of a heat-conducting plate and related structures according to one embodiment of this application;

[0032] Figure 6 This is a schematic diagram of the structure of the fan box according to one embodiment of this application;

[0033] Figure 7 This is a schematic diagram of the structure of the heat-conducting plate, fan box, and water storage box according to one embodiment of this application;

[0034] Figure 8 This is a schematic diagram of the structure of the fan box according to one embodiment of this application;

[0035] Figure 9 This is a schematic diagram of the inner liner of one embodiment of this application;

[0036] Figure 10 This is an exploded view of a refrigeration device according to one embodiment of this application;

[0037] Figure 11 yes Figure 10 A partial schematic diagram from the front side of the central heat-conducting plate;

[0038] Figure 12 yes Figure 10 A partial schematic diagram from the rear side of the central heat-conducting plate.

[0039] The components include: 1. Housing; 2. Door; 3. Inner liner; 31. First inner liner wall; 32. Inner liner drain outlet; 4. Heat-conducting plate; 41. Sealing edge; 42. Claw; 43. Water guiding structure; 44. Water guiding edge; 441. First water guiding edge; 442. Second water guiding edge; 45. Water guiding groove; 46. Water guiding opening; 47. Lower protruding edge; 48. Water guiding channel; 5. Sealing foam; 6. Cooling air duct; 61. First air duct section; 62. Second air duct section; 63. First connecting port; 64. Second connecting port; 7. Storage compartment; 8. Insulation body; 81. First insulation body; 82. Second insulation body; 9. Partition; 10. Cooling fan; 11. Cooling fan air duct; 111. Cooling fan outlet; 112. Cooling air... 12. Fan housing; 13. Duct cover; 14. Turbulent air duct; 141. Turbulent air duct outlet; 142. Turbulent air duct inlet; 15. Turbulent fan; 16. Fan box; 161. Box body; 162. Cover; 163. Turbulent fan inlet; 1631. Lower inlet; 1632. Front inlet; 164. Turbulent fan outlet; 165. Box body drain outlet; 166. Front protrusion; 166. Humidifying air inlet duct; 1661. First humidifying air inlet; 1662. Second humidifying air inlet; 167. Humidifying air outlet duct; 1671. First humidifying air outlet; 1672. Second humidifying air outlet; 17. Water storage box; 18. Humidifying fan; 100. Refrigeration equipment. Detailed Implementation

[0040] The present patent will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present patent, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of this patent.

[0041] Reference Figure 1 and Figure 2 This application provides a refrigeration device 100. In this embodiment, the refrigeration device 100 is a cigar cabinet for storing cigars. In other embodiments, the refrigeration device 100 may also be a refrigerator, freezer, wine cabinet, etc.

[0042] The refrigeration equipment 100 may include a housing 1 and a door 2 pivotally mounted on the housing 1. The refrigeration equipment 100 may include an inner liner 3 disposed within the housing 1. An insulation layer may be provided between the inner liner 3 and the housing 1 to prevent the loss of cold air from the inner liner 3.

[0043] For ease of description, in this application, the height direction of the refrigeration device 100 is the vertical direction. The width direction of the refrigeration device 100 is the horizontal direction. The depth direction of the refrigeration device 100 is the front-to-back direction. When the door 2 is closed, its main exterior surface faces forward.

[0044] Reference Figure 3 and Figure 4 The refrigeration equipment 100 may include a heat-conducting plate 4. The heat-conducting plate 4 is disposed inside the inner liner 3. The heat-conducting plate 4 divides the internal space of the inner liner 3 into a refrigeration air duct 6 and a storage compartment 7.

[0045] The refrigeration equipment 100 may include a refrigeration system. The refrigeration system includes an evaporator, condenser, compressor, capillary tube, etc., connected by refrigerant pipes. The evaporator is disposed within the refrigeration duct 6. The evaporator reduces the temperature inside the refrigeration duct 6 by exchanging heat with the air inside the refrigeration duct 6.

[0046] The heat-conducting plate 4 is used to transfer the cold air in the cooling duct 6 to the storage compartment 7. In this application, the cold air in the cooling duct 6 is evenly transferred to the storage compartment 7 by heat conduction through the heat-conducting plate 4, thereby forming indirect cooling. This avoids cold air blowing directly on stored items, such as cigars, preventing them from losing moisture, drying out, or deteriorating in taste, making it more suitable for items that are sensitive to temperature and humidity.

[0047] The heat-conducting plate 4 can be made of metal. Since the heat-conducting plate 4 is made of metal, it has high thermal conductivity, allowing low temperatures within the air duct to be efficiently transferred to the storage chamber 7, thus improving overall cooling efficiency.

[0048] The refrigeration equipment 100 may include a heat insulation body 8. The heat insulation body 8 is disposed on the side of the heat-conducting plate 4 facing the refrigeration air duct 6 to increase the thermal resistance between the storage compartment 7 and the refrigeration air duct 6.

[0049] A heat insulation element 8 is installed on the side of the heat-conducting plate 4 facing the cooling air duct 6. The purpose of this is to insert a high thermal resistance region into the heat flow path, which brings several positive effects. First, it increases thermal resistance and raises the temperature of the heat-conducting plate 4. Because the heat insulation element 8 is located on the low-temperature side of the air duct, the temperature of the heat-conducting plate 4 itself does not approach the low temperature within the air duct indefinitely, but remains within a relatively high but stable gradient range. Second, it reduces the temperature difference between the heat-conducting plate 4 and the storage chamber 7. In thermodynamics, condensation mainly occurs at points of sudden temperature change, especially when the temperature of the heat-conducting plate 4 is below the dew point temperature. Raising the temperature of the heat-conducting plate 4 through the heat insulation element 8 effectively prevents the plate surface temperature from becoming too low, thus significantly reducing the risk of condensation. Additionally, it reduces thermal shock fluctuations and improves temperature control stability. The increased thermal resistance acts as a "buffer" during heat exchange, making temperature changes slower and more stable, especially during compressor start-up / stop or evaporator load fluctuations, mitigating instantaneous temperature fluctuations in the storage chamber 7.

[0050] In the overall structure, the uniform heat transfer achieved by the heat-conducting plate 4, the thermal resistance adjustment achieved by the heat insulation body 8, and the centralized cooling achieved by the air duct form a well-defined and highly efficient thermal management mechanism, which significantly improves the practicality of the refrigeration equipment 100 and the professional level of the storage environment.

[0051] In one embodiment of this application, the heat insulation element 8 is thermal insulation foam or thermal insulation styrene. This type of material has good thermal resistance and structural flexibility, which can effectively increase the thermal resistance between the heat-conducting plate 4 and the cooling duct 6, thereby enhancing the stability of temperature control. This "delayed cold transfer" design maintains the temperature of the heat-conducting plate 4 at a stable level higher than the duct but lower than the storage space, forming a gentle temperature gradient, which helps to achieve gradual temperature control of the storage space.

[0052] Using insulating foam or styrofoam as the insulation material 8 also has the significant advantage of reducing the risk of condensation on the surface of the heat-conducting plate 4. If the heat-conducting plate 4 is directly exposed to a low-temperature evaporator or a strong cold airflow environment, the temperature of the heat-conducting plate 4 can easily drop rapidly below the dew point, resulting in water droplets condensing on the surface. Long-term use may lead to frost formation, water stains, or component corrosion inside the equipment. By setting insulating foam or styrofoam on the side of the heat-conducting plate 4 facing the air duct, not only can the direct impact of the supercooled airflow on the heat-conducting plate 4 be isolated, but the rapid temperature drop of the heat-conducting plate 4 can also be effectively suppressed, thereby avoiding condensation.

[0053] Furthermore, insulating foam or foam materials typically possess excellent processing adaptability and structural fit, allowing for cutting, pressing, or custom molding according to the specific shape of the heat-conducting plate 4 or air duct structure, facilitating manufacturing and assembly. Simultaneously, their lightweight nature does not significantly increase the overall weight of the machine, contributing to optimized energy efficiency and structural design flexibility. Therefore, this embodiment, by selecting insulating foam or insulating foam as the insulation body 8, achieves comprehensive optimization of insulation performance, temperature control effect, structural compatibility, and manufacturing convenience, effectively improving the user experience and overall performance of the refrigeration equipment 100.

[0054] Reference Figure 4 In one embodiment of this application, a sealing edge 41 is provided around the heat-conducting plate 4. The refrigeration device 100 includes a sealing foam 5 disposed on the sealing edge 41. The sealing foam 5 is used to seal the gap between the sealing edge 41 and the inner liner 3.

[0055] By forming a sealing edge 41 around the heat-conducting plate 4, a clear contact area is provided at the assembly interface between the heat-conducting plate 4 and the inner liner 3, providing a physical basis for the reliable construction of the sealing structure. The sealing edge 41, acting as a support interface, enhances the structural strength of the heat-conducting plate 4 mounting area, preventing misalignment or loosening of the seal due to assembly tolerances, vibration, or thermal expansion and contraction. The sealing foam 5 typically possesses good flexibility and resilience, adapting to minor assembly deformations between the heat-conducting plate 4 and the inner liner 3, ensuring the continuity and stability of the seal during long-term use. This buffering capacity also absorbs micro-vibrations generated during equipment operation, reducing structural noise and resonance, contributing to improved quiet operation and user comfort. The sealing foam 5 also plays a positive role in condensation protection. Because the sealing structure effectively blocks the short-circuit path of cold air, it reduces the risk of low-temperature condensation at the edge of the heat-conducting plate 4, preventing component corrosion, water vapor penetration, or bacterial growth caused by condensation, thereby improving the durability and hygiene safety of the equipment.

[0056] Reference Figure 3 and Figure 4 In one embodiment of this application, the inner liner 3 includes a first inner liner wall 31 spaced apart from the heat-conducting plate 4. The refrigeration device 100 also includes a partition 9. The partition 9 is disposed between the first inner liner wall 31 and the heat-conducting plate 4. The partition 9 divides the refrigeration air duct 6 into a first air duct section 61 and a second air duct section 62. The second air duct section 62 is closer to the first inner liner wall 31 than the first air duct section 61. An evaporator is disposed within the second air duct section 62.

[0057] The refrigeration equipment 100 also includes a refrigeration fan 10. The refrigeration fan 10 is disposed within the first air duct section 61. The refrigeration fan 10 is used to promote gas flow between the first air duct section 61 and the second air duct section 62.

[0058] The partition 9 divides the refrigeration duct 6 into two parts along its depth: the first duct section 61 is located near the heat-conducting plate 4, and the second duct section 62 is located near the first inner wall 31. The evaporator is positioned within the second duct section 62, close to the first inner wall 31, allowing it to fully contact the return airflow in that area for efficient heat exchange. The refrigeration fan 10 is positioned within the first duct section 61, creating an organized airflow circulation that causes cooled air to flow from the second duct section 62 through the opening in the partition 9 or the airflow channel into the first duct section 61, and ultimately indirectly transfers the cooling energy to the storage compartment 7 via the heat-conducting plate 4. This airflow path not only optimizes the direction and velocity distribution of cooling energy transfer but also effectively avoids the direct impact of cold air on stored items, making it particularly suitable for storing environmentally sensitive items such as cigars and wine.

[0059] This duct separation design provides excellent temperature field control. Through the rational distribution of the evaporator and fan within the two duct sections, the system can maintain stable and continuous airflow circulation at different operating stages, thereby improving the uniformity of cold air distribution. Furthermore, the baffle 9 in the duct structure acts as an airflow buffer, helping to mitigate cold air impact and improve the overall thermal stability and temperature control of the system. The evaporator is arranged in the relatively enclosed second duct section 62, preventing low temperatures from directly affecting the boundary surface between the heat-conducting plate 4 and the storage chamber 7. By setting the baffle 9 and configuring the evaporator and cooling fan 10 in the two duct sections respectively, this application achieves modularity of the duct structure, optimization of the cold air flow path, and stable output of cooling capacity control without significantly increasing structural complexity, significantly improving the thermal efficiency, operational stability, and quality control capabilities of the storage space environment of the refrigeration system.

[0060] Reference Figures 3 to 5 In one embodiment of this application, the heat insulation body 8 includes a first heat insulation body 81. The first heat insulation body 81 is close to the cooling fan 10. The heat insulation body 8 also includes a second heat insulation body 82. The second heat insulation body 82 is far from the cooling fan 10. The thermal resistance of the second heat insulation body 82 is less than that of the first heat insulation body 81.

[0061] Reference Figures 3 to 5 In one embodiment of this application, the thickness of the first heat insulation body 81 is greater than that of the second heat insulation body 82.

[0062] Dividing the insulation 8 into two parts with different thermal resistances creates a gradient in the rate of cold energy conduction received by different areas of the heat-conducting plate 4, which helps control the overall temperature distribution trend of the heat-conducting plate 4. Since the first insulation 81 is close to the cooling fan 10, this area receives a stronger direct impact from the cold air and has a higher cold energy input. Without effective insulation, this part of the heat-conducting plate 4 may cool down rapidly, leading to localized condensation or excessive temperature fluctuations. Therefore, setting the first insulation 81 with higher thermal resistance can effectively suppress excessively rapid local heat conduction, buffering and delaying the cold energy input, and preventing instability caused by uneven heating or rapid cooling on the surface of the heat-conducting plate 4.

[0063] This structure establishes a spatial thermal resistance gradient by rationally controlling the thermal resistance distribution of the insulation 8, thereby forming a controlled temperature gradient field on the heat-conducting plate 4. This gradient field not only helps prevent excessively low temperatures at single points and improves anti-condensation capabilities, but also makes the cooling output more regular, thereby improving the thermal stability and response coordination of the refrigeration system during dynamic operation and adapting to the storage space's demand for balanced temperature and humidity.

[0064] Reference Figure 3 In one embodiment of this application, a heat-conducting plate 4 is disposed at the rear of the inner liner 3. The heat-conducting plate 4 is spaced apart from the first inner liner wall 31. The first inner liner wall 31 is located at the rear of the inner liner 3. A cooling air duct 6 is located at the rear of the inner liner 3. A storage compartment 7 is located in front of the cooling air duct 6.

[0065] The heat-conducting plate 4 is positioned at the rear of the inner liner 3, forming an independent cooling air duct 6 area between it and the first inner liner wall 31, effectively isolating the hot and cold spaces. The cooling air duct 6 can accommodate key components such as the evaporator, fan, and partition 9, forming an independent airflow circulation system. This prevents cold air from directly entering the storage space, thus protecting stored items from airflow impacts and sudden temperature and humidity changes. This rear-mounted structure optimizes the usability of the storage space. Compared to side-mounted or top-mounted cooling methods, the rear-integrated air duct and cold source components can compactly integrate the cold source system into the rear area of ​​the inner liner 3 without affecting the storage layout, avoiding encroachment on effective storage volume and improving overall space utilization and aesthetics. Simultaneously, installation and maintenance operations are more centralized and convenient, facilitating modular design and maintenance.

[0066] Reference Figures 3 to 5 In one embodiment of this application, the first heat insulation body 81 is thermal insulation foam. The thermal insulation foam forms a receiving groove. The refrigeration device 100 includes a fan housing 12 disposed within a first air duct portion 61. The fan housing 12 is at least partially located within the receiving groove. The fan housing 12 and the first heat insulation body 81 enclose a refrigeration fan air duct 11. A refrigeration fan 10 is disposed within the refrigeration fan air duct 11.

[0067] The first insulation body 81 is made of insulating foam, which has excellent thermal insulation properties. It can effectively block the low temperature from the cooling air duct 6 from being directly conducted to the external structure of the fan housing 12, thereby maintaining the temperature of the heat-conducting plate 4, avoiding local overcooling, and reducing the risk of condensation. At the same time, the insulating foam can be precisely molded into a receiving groove structure that matches the fan housing 12, so that the fan housing 12 can be firmly embedded in it, improving assembly accuracy and structural stability.

[0068] The design of embedding the insulation foam accommodating groove in the fan casing 12 creates a closed or semi-closed air duct area between the fan casing 12 and the first heat insulation body 81, namely the cooling fan air duct 11. This air duct guides and accelerates airflow during fan operation, improving the airflow circulation efficiency within the cooling air duct 6. This ensures that after sufficient heat exchange in the evaporator, the cold air is quickly and efficiently guided to flow, forming a stable cold air circulation path and enhancing the overall performance of the heat exchange system.

[0069] This integrated structure facilitates a compact layout of the refrigeration components. By combining the fan housing 12 with the insulation 8, unnecessary space is avoided due to scattered parts, resulting in a simpler and more efficient refrigeration duct 6 structure. This not only improves internal space utilization but also facilitates modular manufacturing and maintenance. Furthermore, the insulation foam material has excellent damping and sound absorption properties, effectively reducing airflow impact noise and mechanical vibration noise within the duct during fan operation, further improving the overall quietness and user experience of the unit.

[0070] Reference Figures 3 to 5 In one embodiment of this application, the cooling fan duct 11 is located at the lower part of the first duct section 61. The upper end of the cooling fan duct 11 has a cooling fan outlet 111. The side of the cooling fan duct 11 facing the first inner wall 31 has a cooling fan inlet 112.

[0071] A first connecting opening 63, connecting the first air duct section 61 and the second air duct section 62, is formed between the upper end of the partition 9 and the top wall of the inner liner 3. A second connecting opening 64, connecting the first air duct section 61 and the second air duct section 62, is formed between the lower end of the partition 9 and the bottom wall of the inner liner 3. A second heat insulation body 82 is located above the first heat insulation body 81. The second heat insulation body 82 is thermal insulation foam.

[0072] The upper end of the cooling fan duct 11 is provided with a cooling fan outlet 111, which is used to deliver the cold air flow driven by the fan to the top of the first duct section 61; the side of the duct facing the first inner wall 31 is provided with a cooling fan inlet 112, which is used to draw in the cold air cooled by the evaporator.

[0073] Furthermore, a first connecting port 63 is formed between the upper end of the partition 9 and the top wall of the inner liner 3, and a second connecting port 64 is formed between the lower end of the partition 9 and the bottom wall of the inner liner 3, so that the first air duct section 61 and the second air duct section 62 are interconnected at the upper and lower ends, constructing a closed-loop airflow circuit. Under the action of the cooling fan 10, cold air is drawn in from the second air duct section 62 through the lower fan duct, enters the first air duct section 61 through the fan outlet, rises, and is distributed along the heat-conducting plate 4. Finally, it flows into the second air duct section 62 through the upper first connecting port 63, is cooled again, and then circulates repeatedly, forming a closed and stable forced airflow loop.

[0074] This "bottom-in, top-out" airflow circulation path, combined with the air duct structure distribution, can prevent short-circuiting or dead-angle accumulation of hot and cold gases, improve the temperature control stability of the storage space, and is especially suitable for storage applications that require maintaining a constant temperature environment.

[0075] In terms of thermal insulation design, the second thermal insulation element 82 is positioned above the first thermal insulation element 81, near the upper part of the fan duct. This second thermal insulation element 82 uses insulating foam material, which has good flexibility and moderate thermal resistance, enhancing the thermal insulation capacity of the upper part of the fan duct without affecting the structural layout. By setting insulating foam as the second thermal insulation element 82 at the top, a certain heat transfer efficiency can be maintained while effectively buffering the cold air impact in the upper area, suppressing the risk of dew point temperature on the surface of the heat-conducting plate 4, and further enhancing the overall anti-condensation capability and temperature control uniformity of the equipment.

[0076] Reference Figure 3 and Figure 4 In one embodiment of this application, the cooling system further includes a duct cover 13. The duct cover 13 covers the side of the heat-conducting plate 4 away from the cooling duct 6. The duct cover 13 and the heat-conducting plate 4 form a turbulent airflow duct 14. The cold air in the cooling duct 6 is conducted to the turbulent airflow duct 14 via the heat-conducting plate 4. The air outlet 141 of the turbulent airflow duct is connected to the storage chamber 7.

[0077] The refrigeration system also includes a turbulence fan 15. The turbulence fan 15 is located within the storage chamber 7 or the turbulence duct 14. The turbulence fan 15 is used to promote airflow between the storage chamber 7 and the turbulence duct 14.

[0078] The air duct cover 13 is located on the side of the heat-conducting plate 4 away from the cooling air duct 6, that is, the side closer to the storage chamber 7, forming a turbulent air duct 14 between it and the heat-conducting plate 4. The heat-conducting plate 4 transfers the low temperature generated by the evaporator in the cooling air duct 6 to the turbulent air duct 14 through metal heat conduction, achieving temperature regulation of the storage space without introducing direct cold air. The air outlet of the turbulent air duct 14 is connected to the storage chamber 7, allowing the heat-conducted cooling energy to diffuse within the storage space, thereby achieving a stable, gentle, and uniform cooling output. This structure effectively prevents localized low temperatures and dryness caused by direct cold air blowing, and is especially suitable for items that are extremely sensitive to environmental fluctuations, such as cigars, wine, and medicines.

[0079] The operation of the turbulence fan 15 actively propels air from the storage chamber 7 into the turbulence duct 14, where it fully exchanges heat with the cooling energy transferred by the heat-conducting plate 4 before returning to the storage space, forming a stable local air circulation system. This active turbulence mechanism not only enhances the temperature uniformity within the storage chamber 7 but also improves the sensitivity of temperature control response, enabling faster temperature compensation and balance when the compressor starts or the ambient temperature changes. Furthermore, the structure of the turbulence duct 14 also serves to guide and buffer airflow. The channel defined between the duct cover 13 and the heat-conducting plate 4 effectively controls the velocity and path of the cold air.

[0080] Reference Figure 3 and Figure 4 In one embodiment of this application, the refrigeration device 100 further includes a fan box 16 disposed within the storage chamber 7. A turbulence fan 15 may be disposed within the fan box 16 and used to promote gas flow between the storage chamber 7, the fan box 16, and the turbulence duct 14.

[0081] The turbulence duct 14 may include a turbulence duct inlet 142 and a turbulence duct outlet 141 communicating with the storage chamber 7. The fan box 16 is provided with a turbulence fan inlet 163 and a turbulence fan outlet 164. The turbulence fan inlet 163 communicates with the storage chamber 7. Gas in the storage chamber 7 enters the fan box 16 through the turbulence fan inlet 163. The turbulence fan outlet 164 communicates with the turbulence duct inlet 142. Gas in the fan box 16 enters the turbulence duct 14 through the turbulence fan outlet 164.

[0082] The fan box 16 is located inside the storage chamber 7, and a turbulence fan 15 is installed inside it. The air inlet of the turbulence fan 15 is directly connected to the storage chamber 7, so that the air in the storage chamber 7 can be drawn into the fan box 16 through the air inlet 163 of the turbulence fan. After the fan is working, the air is discharged through the air outlet 164 of the turbulence fan and enters the turbulence duct 14 through the air inlet of the turbulence duct 14. After exchanging heat with the cold energy conducted by the heat conduction plate 4 in the turbulence duct 14, the air flows back to the storage chamber 7 through the air outlet of the turbulence duct 14, thus forming a closed and controlled local air circulation path.

[0083] This structure achieves "active ventilation" and "directional airflow" between the storage chamber 7 and the turbulence duct 14. Through the transfer function of the fan box 16 and the power of the turbulence fan 15, the airflow path can be guided, compressed, or accelerated, making the cooling output more uniform and controllable. Furthermore, during operation, the turbulence fan 15 within the fan box 16 has its air inlet connected to the storage chamber 7, allowing for real-time air extraction from the storage chamber 7 to prevent localized air stagnation or uneven heating. Its air outlet is connected to the turbulence duct inlet 142, ensuring that each flow of gas passes through the cooling conduction area behind the heat-conducting plate 4, maximizing the utilization of cooling capacity. Throughout the process, the gas path is confined to a circulation between the storage chamber 7, the fan box 16, and the turbulence duct 14, forming a closed microclimate circulation unit. This improves temperature control accuracy, reduces energy consumption, and enhances the system's ability to respond to external temperature fluctuations.

[0084] Reference Figure 6 In one embodiment of this application, the turbulence fan inlet 163 includes a lower inlet 1631 disposed on the bottom wall of the fan box 16. The fan box 16 may be disposed at the bottom of the storage chamber 7.

[0085] The fan box 16 is positioned at the bottom of the storage chamber 7, with a lower air inlet 1631 on its bottom wall. This allows cooler air from the storage chamber 7 to enter the fan box 16 from bottom to top, which is beneficial for conforming to the natural law of gas stratification. Cold air has a higher density and usually settles in the lower part of the storage chamber 7. Bottom air intake can more efficiently recover low-temperature gas in the storage chamber 7, preventing cold air from stagnating in the lower part and forming temperature dead zones, thereby improving the uniformity and accuracy of temperature control.

[0086] When the turbulence fan 15 operates within the fan box 16, it draws in gas from the bottom of the storage chamber 7 through the lower air inlet 1631, forming a stable lower return air path. The fan pressurizes the gas and sends it through the air outlet of the fan box 16 into the turbulence duct 14, achieving gas circulation between the storage chamber 7, the fan box 16, and the turbulence duct 14. Since the turbulence duct 14 is adjacent to the back of the heat-conducting plate 4, this circulation path ensures that cooling energy is effectively transferred from the heat-conducting plate 4 to the storage chamber 7 and actively distributed by the turbulence fan 15, overcoming the slow response and uneven airflow problems caused by relying solely on natural convection.

[0087] Furthermore, placing the fan box 16 at the bottom of the storage compartment 7 helps save space in the upper storage area, avoids the fan structure affecting the placement or visibility of items, and facilitates modular design and maintenance. The lower air inlet 1631, as an integrated structure at the bottom of the fan box 16, has a compact layout and simple structure, enabling efficient air intake without interfering with the overall layout of the storage compartment 7.

[0088] Reference Figure 6 In one embodiment of this application, the lower air inlet 1631 includes a plurality of strip-shaped openings arranged side by side in the left-right direction.

[0089] The lower air inlet 1631 is designed as multiple strip-shaped openings arranged in the left and right directions, which can form a wide and dispersed air intake area at the bottom of the storage chamber 7. Compared with a single centralized opening, the strip structure helps to expand the effective air intake area, so that the low temperature air at the bottom of the storage chamber 7 can be more evenly and fully recovered by the turbulence fan 15, avoiding temperature dead zones or air stagnation caused by poor local air intake, thereby improving the overall temperature uniformity of the storage space.

[0090] Furthermore, the horizontally arranged strip-shaped openings help guide air into the fan box 16 in a smooth, laminar flow, reducing the probability of turbulence and noise, thereby optimizing the quiet operation of the equipment. The multiple openings also provide strong anti-clogging capabilities; even if some openings are blocked by dust, foreign objects, or moisture, the remaining openings can still maintain ventilation, enhancing the system's operational robustness and reliability.

[0091] Reference Figure 3 , Figure 4 , Figure 6 In one embodiment of this application, the refrigeration device 100 further includes a water storage box 17 disposed in the storage chamber 7. The water storage box 17 is disposed below the fan box 16. The fan box 16 includes a front protrusion 166 that protrudes forward relative to the water storage box 17, and the bottom wall of the front protrusion 166 may form a lower air inlet 1631.

[0092] The front protrusion 166 of the fan box 16 is designed so that its bottom wall can avoid the main body area of ​​the water storage box 17, forming a structural platform suitable for arranging the lower air inlet 1631. This ensures full communication between the fan inlet and the bottom space of the storage chamber 7, allowing air to flow smoothly from the bottom of the storage chamber 7 into the fan box 16, creating an efficient and stable airflow circulation path. The lower air inlet 1631 on the bottom wall of the front protrusion 166 can adopt a strip-shaped opening structure opposite to the bottom of the storage chamber 7, achieving sufficient air intake without affecting the water storage function, and bringing the fan suction position closer to the low-temperature area of ​​the storage space, thereby improving the efficiency of cold air recovery and enhancing the overall temperature control uniformity.

[0093] Reference Figure 7 In one embodiment of this application, the air inlet 163 of the turbulence fan includes a forward air inlet 1632 disposed on the front wall of the fan box 16. The forward air inlet 1632 may be formed on the front wall of the front protrusion 166.

[0094] By adding a front air inlet 1632 to the existing lower air inlet 1631, a dual-path air intake channel can be provided for the turbulence fan 15. That is, air in the storage compartment 7 can enter the fan box 16 simultaneously from the lower air inlet 1631 at the bottom and the front air inlet 1632 at the front. This multi-directional air intake design significantly improves the fan's air intake capacity, helps to enhance the suction efficiency of the turbulence fan 15, forms a stronger and more continuous cold air circulation flow, and improves the refrigeration system's response speed and airflow circulation rate.

[0095] The front air vent 1632 is located on the front wall of the front protrusion 166 of the fan box 16, close to the lower front area of ​​the storage compartment 7. It can directly draw in cold air from this area, overcoming the problems of poor airflow recovery and uneven temperature distribution in traditional structures. The cold air naturally sinks to the bottom and front of the storage compartment 7. By setting the front air vent 1632, cold air stagnation can be effectively avoided, reducing the probability of temperature dead zones at the front and improving the temperature control uniformity of the overall storage space.

[0096] The front air inlet 1632 and the lower air inlet 1631 form an L-shaped air intake combination distributed on the front wall and the bottom wall, which can create a more uniform and gentle airflow collection effect, reduce airflow disturbance and noise during fan operation, improve the quiet operation performance, and at the same time improve the flow stability of gas in the turbulence fan 15 and extend the service life of the fan system.

[0097] Reference Figure 4 , Figure 6 , Figure 8 In one embodiment of this application, the fan box 16 is further provided with a humidifying air inlet duct 166. The humidifying air inlet duct 166 includes a first humidifying air inlet 1661 communicating with the storage chamber 7 and a second humidifying air inlet 1662 communicating with the water storage box 17.

[0098] The fan box 16 is also provided with a humidifying air outlet duct 167. The humidifying air outlet duct 167 includes a first humidifying air outlet 1671 that communicates with the storage chamber 7 and a second humidifying air outlet 1672 that communicates with the water storage box 17.

[0099] The fan box 16 is also equipped with a humidifying fan 18. The humidifying fan 18 is located in the humidifying air inlet duct 166. The humidifying fan 18 is used to cause the gas in the storage chamber 7 to enter the water storage box 17 through the humidifying air inlet duct 166 for humidification, and then return to the storage chamber 7 through the humidifying air outlet duct 167.

[0100] Dry air in the storage chamber 7 is guided into the humidification duct through the first humidification air inlet 1661, and then enters the water storage box 17 area through the second humidification air inlet 1662 under the drive of the humidification fan 18. During this process, the gas comes into contact with the water surface as it passes over the surface of the water storage box 17, absorbing water vapor and thus increasing the air humidity.

[0101] The humidified air returns to the storage chamber 7 via the humidification outlet duct 167. The humidification outlet duct 167 connects to the storage chamber 7 and the water storage box 17 via a first humidification outlet 1671 and a second humidification outlet 1672, respectively. The humidified air can exit the water storage box 17 area via the second humidification outlet 1672 and return to the storage chamber 7 via the first humidification outlet 1671, completing one full airflow cycle. This airflow path has a clear direction and controlled residence time, which helps to achieve sufficient humidification and evenly release humidity throughout the entire storage space.

[0102] The humidifying fan 18, as an active driving element, is installed within the humidifying air inlet duct 166, effectively overcoming the problems of low efficiency and slow response inherent in natural diffusion or evaporative humidification methods. Its function is to accelerate the flow of dry air from the storage chamber 7 to the water storage box 17 area, shortening the air humidification path and increasing the humidification rate per unit time. Simultaneously, the continuous operation of the humidifying fan 18 maintains the stability of the gas circulation, keeping the humidification process dynamically balanced and preventing localized humidity accumulation or prolonged fluctuations.

[0103] Reference Figure 4 In one embodiment of this application, the upper end of the water storage box 17 is open.

[0104] The open water storage box 17 at the top allows the humidifying airflow to directly contact the water surface upon entering the box, thus achieving natural evaporation and humidity transfer, significantly increasing the contact area and exchange efficiency between air and water. Compared to closed water boxes or airflow paths that require traversing complex channels, this design avoids the problem of airflow disturbances being blocked by the structure or compressed along the path, which is conducive to forming a stable, low-resistance humidifying airflow channel, thereby improving the working efficiency of the humidifying fan 18 and the overall humidity regulation response speed of the system.

[0105] Secondly, the open structure significantly simplifies the manufacturing and assembly process of the water tank, avoiding the processing complexity associated with setting up dedicated vents or sealing structures. It also facilitates users or maintenance personnel in replenishing, cleaning, or periodically inspecting the water tank 17, improving ease of use and maintainability. Furthermore, the open design at the top of the water tank 17, combined with the airflow generated by the humidifying fan 18, helps establish a stable flowing air layer above the water surface. This allows dry air to absorb moisture as it passes over the water surface and exit smoothly, preventing localized saturation or condensation caused by water vapor accumulation.

[0106] Reference Figure 3 , Figure 4 and Figure 7 In one embodiment of this application, a turbulence fan outlet 164 is formed at the rear end of the top wall of the fan box 16. The fan box 16 may include a detachably connected box body 161 and a cover 162. The upper end of the box body 161 is open, and the cover 162 covers the upper opening of the box body 161. The rear end of the cover 162 forms the turbulence fan outlet 164.

[0107] The rear end of the top wall of the fan box 16 is equipped with a turbulence fan outlet 164, which facilitates the smooth guidance of the airflow driven by the fan into the turbulence duct 14 behind the heat conduction plate 4, realizing a closed-loop cold air circulation path of storage chamber 7 → fan box 16 → turbulence duct 14 → storage chamber 7. By setting the outlet at the rear end of the top wall, the airflow direction of the fan can be aligned with the inlet of the turbulence duct 14, reducing airflow path bends and energy loss, improving cold air delivery efficiency and flow stability, thereby enhancing the uniformity of cold air distribution and heat transfer efficiency in the storage space.

[0108] The fan box 16 adopts a combined structure of a box body 161 and a cover 162. The top of the box body 161 is open, facilitating the pre-installation and layout of components such as fans, ducts, and cables. The cover 162 covers the box body 161, not only completing the construction of the enclosed space but also integrating duct interfaces, such as the air outlet 164 of the turbulence fan, to facilitate the orderly guidance of airflow. This detachable structure facilitates fan maintenance, replacement, or cleaning operations, reducing equipment repair complexity and maintenance costs. The structure also possesses good manufacturing and assembly adaptability. The box body 161 and the cover 162 can be connected by snaps, screws, or sliding fasteners, ensuring structural stability while allowing for quick disassembly and assembly, facilitating segmented assembly on the production line and module replacement during maintenance.

[0109] Reference Figure 3 and Figure 4 In one embodiment of this application, the air duct cover plate 13 and the lower end of the heat conduction plate 4 are arranged to form a turbulent air duct inlet 142.

[0110] By constructing a turbulent air inlet 142 between the lower end of the heat-conducting plate 4 and the air duct cover plate 13, the air in the storage chamber 7 or the airflow driven by the turbulent fan 15 can enter the turbulent air duct 14 in an orderly manner from below, rise along the surface of the heat-conducting plate 4, and fully exchange heat with the cold energy conducted by the heat-conducting plate 4 before flowing into the storage chamber 7, thus realizing the flexible release of cold energy through indirect cooling.

[0111] Reference Figure 4 In one embodiment of this application, the left side wall, right side wall and front side wall of the duct cover plate 13 are all formed with turbulent duct outlets 141.

[0112] A turbulent air duct outlet 141 is provided on three side walls of the air duct cover plate 13—namely, the left side wall, the right side wall, and the front side wall—forming a multi-faceted air outlet structure. This allows the cold air conducted along the heat-conducting plate 4 within the turbulent air duct 14 to be released simultaneously into the storage chamber 7 from multiple directions. This enables the cold air to form a more uniform diffusion path within the storage space, effectively avoiding temperature dead zones and improving the temperature uniformity of the entire storage space.

[0113] Secondly, the multi-faceted air outlet design allows for more flexible cooling release paths, enabling full coverage of the cooling air in different storage chamber 7 layouts and enhancing the equipment's adaptability to various usage scenarios. For example, when the storage chamber 7 has an asymmetrical structure or contains obstructions, the cooling air can still be released from the unobstructed direction, maintaining the system's thermal balance, avoiding heat accumulation or airflow short-circuiting, and improving the robustness of temperature control and environmental stability.

[0114] Furthermore, distributing the air outlets on three side walls of the duct cover 13 helps reduce wind noise caused by concentrated airflow velocity. The cool air is released gently from multiple directions, creating a low-speed, uniform, and soft turbulent cool air environment, which is particularly suitable for storage applications sensitive to wind speed and temperature fluctuations, such as cigar cabinets and constant temperature and humidity equipment, helping to maintain the quality of items and stable microenvironmental conditions.

[0115] Reference Figure 4 In one embodiment of this application, the duct cover 13 is connected to the heat-conducting plate 4 via a snap-fit ​​structure and / or fasteners. The snap-fit ​​structure and fasteners can be used alone or in combination. For example, snap-fits can be used for quick positioning in the early stages of assembly, and fasteners can be used to enhance structural stability, achieving a synergistic effect of "rapid assembly + high-strength connection". This design scheme takes into account both manufacturing efficiency and improved reliability.

[0116] Reference Figure 4 and Figure 5 In one embodiment of this application, the heat-conducting plate 4 is connected to the inner liner 3 by a snap-fit ​​structure and / or fasteners. The snap-fit ​​structure and fasteners can be used alone or in combination.

[0117] In one embodiment of this application, the heat-conducting plate 4 is provided with claws 42. Specifically, claws 42 are provided on the upper, lower, left, and right sides of the heat-conducting plate 4. The inner liner 3 is provided with slots that mate with the claws 42. Fixing slots are provided on the upper left, upper right, lower left, and lower right sides of the heat-conducting plate 4. The refrigeration device 100 includes fasteners. The fasteners connect the heat-conducting plate 4 and the inner liner 3 via the fixing slots.

[0118] By incorporating claws 42 around the heat-conducting plate 4 and engaging with slots on the inner liner 3, rapid alignment and self-positioning are achieved during installation. Assemblers simply press the heat-conducting plate 4 towards the inner liner 3, causing the claws 42 to engage with the corresponding slots, thus achieving precise three-dimensional positioning of the heat-conducting plate 4 without the need for complex tools or auxiliary fixtures. This "insert-and-position" structure significantly improves production efficiency, making it particularly suitable for mass assembly or automated manufacturing processes.

[0119] The claw 42 + slot structure not only provides assembly positioning but also offers a certain degree of vibration resistance during operation. The claw 42 fits tightly against the inner wall of the slot, forming a physical limit during equipment operation to prevent the heat-conducting plate 4 from shifting or loosening due to airflow impact, thermal expansion and contraction, or shaking during transportation, thereby ensuring long-term stable operation of the equipment.

[0120] After the snap-fit ​​structure is initially fixed, the fixing grooves at the four corners of the heat-conducting plate 4 are used to reinforce the structure with fasteners. Fasteners, such as screws and studs, pass through the fixing grooves and connect to the inner liner 3, forming a high-strength rigid connection, further improving the stability and durability of the overall structure. This design is particularly suitable for scenarios involving frequent temperature changes or vibrations during the long-term operation of the refrigeration equipment 100, helping to prevent loosening or abnormal noise at the connection points.

[0121] Furthermore, the combination of the snap-fit ​​structure and fasteners not only improves structural reliability but also retains a certain degree of detachability, facilitating later maintenance, cleaning, or replacement of the heat-conducting plate 4. Maintenance personnel can first remove the fasteners and then remove the heat-conducting plate 4 from the inner liner 3 by controlling the direction of the clips 42, achieving modular maintenance and reducing service costs and operational difficulty.

[0122] Reference Figures 9 to 12 In one embodiment of this application, an inner liner drain outlet 32 ​​is formed at the bottom of the inner liner 3. The heat-conducting plate 4 is provided with a water-guiding structure 43. The water-guiding structure 43 is used to guide water on the heat-conducting plate 4 to the inner liner drain outlet 32.

[0123] By guiding condensate from the edge or center of the heat-conducting plate 4 to its lower edge, and finally concentrating it at the bottom of the inner liner 3 near the drain outlet 32, an organized water flow path can be quickly formed even if condensation occurs on the surface of the heat-conducting plate 4 during the cooling process. This prevents water droplets from spreading across the plate surface or dripping into the storage space, thus avoiding internal contamination of the equipment or moisture damage to the stored items.

[0124] The combined use of the water guiding structure 43 and the inner tank drain outlet 32 ​​creates a complete drainage path, giving the equipment a strong ability to handle condensation, making it particularly suitable for high-humidity operating environments or scenarios where the storage room 7 is frequently opened and closed, and where there is frequent exchange of hot and humid air. Effective water guiding and drainage design prevents moisture accumulation in the air ducts, fans, or insulation layers, reducing the risk of bacterial and mold growth, extending the service life of internal components, and ensuring that the storage environment remains dry and clean for a long time.

[0125] Reference Figures 9 to 12 In one embodiment of this application, the inner liner 3 forms an inner liner drain outlet 32 ​​on the bottom wall corresponding to the cooling air duct 6. The water guiding structure 43 includes a water guiding edge 44. The water guiding edge 44 is disposed on the side of the heat-conducting plate 4 facing the air duct cover plate 13, and extends downward at an angle. The water guiding structure 43 also includes a water guiding groove 45. The water guiding groove 45 is disposed on the side of the heat-conducting plate 4 facing the air duct cover plate 13.

[0126] The water guiding structure 43 includes a water guiding opening 46. The water guiding opening 46 is formed by the heat-conducting plate 4. The water guiding opening 46 connects the water guiding channel 45 and the cooling air duct 6 to guide water in the water guiding channel 45 to the cooling air duct 6.

[0127] The water guide 44 is located on the side of the heat-conducting plate 4 facing the air duct cover 13. Its structure extends downward at an incline, forming a natural drainage slope on the surface of the heat-conducting plate 4. After condensate is generated on the surface of the heat-conducting plate 4, it flows along the inclined water guide 44 under the action of gravity, effectively preventing water droplets from spreading or accumulating on the plate surface, and achieving initial directional guidance.

[0128] A water guide trough 45 is provided at or below the end of the water guide 44 to further collect the condensate flowing down the water guide 44. The water guide trough 45 is also arranged on the side of the heat conduction plate 4 facing the duct cover plate 13, forming a containment water channel structure, creating a condensate collection area between the heat conduction plate 4 and the duct cover plate 13. This design ensures that the condensate is collected centrally without dripping into the storage chamber 7 or fan components, creating conditions for subsequent orderly discharge.

[0129] The water guiding structure 43 also includes a water guiding opening 46 formed by the heat-conducting plate 4 body. This opening connects the water guiding groove 45 and the cooling air duct 6, allowing water accumulated in the water guiding groove 45 to drain smoothly into the cooling air duct 6 located behind the heat-conducting plate 4. Considering the correspondence between the bottom of the cooling air duct 6 and the bottom wall of the inner tank 3, and the location of the inner tank drain outlet 32 ​​in this area, condensate can eventually settle naturally within the air duct and be discharged to the outside of the equipment through the inner tank drain outlet 32. This three-stage drainage structure achieves a closed-loop path of "surface guidance - centralized water collection - orderly discharge," effectively preventing water vapor backflow, water accumulation, or structural corrosion.

[0130] Furthermore, the water guiding structure 43 is located on the back of the heat-conducting plate 4, i.e., on the side not facing the storage chamber 7. This not only prevents condensate from interfering with the environmental control of the storage space, but also maintains the cleanliness and aesthetics of the storage side, improving user experience and equipment hygiene performance. At the same time, the integrated design of the water guiding structure 43 and the heat-conducting plate 4 facilitates mass production and mold integration, reducing manufacturing complexity and cost.

[0131] Reference Figure 11 In one embodiment of this application, the lower end of the water guide 44 is located above the water guide groove 45 and its downward projection is located inside the water guide groove 45.

[0132] The water guide rail 44 is located on the side of the heat-conducting plate 4 facing the air duct cover 13 and extends downward in an inclined direction. Its lower end serves as the final outlet area for the condensate flow, directly guiding the condensate droplets. By arranging this lower end above the water guide groove 45, and ensuring that its projection area falls entirely within the interior of the water guide groove 45, it effectively ensures that the condensate, after converging at the end of the water guide rail 44, can accurately fall into the water guide groove 45 without splashing onto the outside of the water guide groove 45 or the surface of other components.

[0133] In another embodiment of this application, the lower end of the water guide 44 extends into the water guide groove 45.

[0134] By extending the water guide along the lower end of the guide rail 44 into the water guide trough 45, the condensate on the surface of the heat-conducting plate 4 can flow along the guide rail 44 and be directly introduced into the trough space of the water guide 45, achieving a continuous connection from diversion to collection. Compared with designs that are aligned only within the vertical projection range, this structure is more physically inclusive, ensuring that the water flows stably into the water guide trough 45 even under slight equipment shaking, airflow disturbance, or changes in condensate flow rate, and is less likely to overflow or deviate.

[0135] Reference Figure 4 , Figure 5 , Figure 12 In another embodiment of this application, a lower protrusion 47 extending into the cooling air duct 6 is provided at the lower end of the heat-conducting plate 4. The lower protrusion 47 extends downward at an angle. A water-guiding structure 43 is provided at the lower part of the heat-conducting plate 4. A water-guiding opening 46 is located above the lower protrusion 47.

[0136] The lower protruding edge 47 serves as a transition structure between the heat-conducting plate 4 and the cooling duct 6. Extending inward and inclined, it forms a natural guide surface for condensate. When condensate forms on the surface of the heat-conducting plate 4 or in the water channel 45, the water flows downstream under gravity to the lower part of the heat-conducting plate 4. The inclined angle of the lower protruding edge 47 guides the water into the cooling duct 6, preventing water droplets from accumulating at the edge of the heat-conducting plate 4 or randomly dripping, thus improving the predictability of water flow control and the cleanliness of system operation. The inclined shape of the lower protruding edge 47 also provides excellent backflow prevention and drainage acceleration. In the event of airflow within the cooling duct 6 or slight positive / negative pressure fluctuations in the equipment, the inclined structure can suppress the backflow of gas or water vapor from the duct into the heat-conducting plate 4 area.

[0137] Reference Figure 5 In another embodiment of this application, a water guiding channel 48 is formed around the lower end of the heat insulation body 8 and the lower protrusion 47. The water guiding channel 48 is connected to the water guiding opening 46.

[0138] The heat insulation body 8, as a heat insulation structure disposed on the side of the heat-conducting plate 4 facing the cooling air duct 6, has good thermal resistance performance, effectively preventing the cold air from the air duct from over-cooling the heat-conducting plate 4 and reducing the risk of condensation. In this embodiment, the lower end of the heat insulation body 8 extends and is formed in conjunction with the lower protrusion 47 to form a semi-closed or closed water guiding channel 48. This channel is located in the lower edge area of ​​the heat-conducting plate 4, close to the position where condensate may accumulate, and can effectively collect and guide water droplets, preventing them from flowing irregularly or accumulating at the edge of the heat-conducting plate 4.

[0139] Reference Figure 4 and Figure 5 In another embodiment of this application, the refrigeration device 100 includes a sealing foam 5 disposed between the lower protrusion 47 and the bottom wall of the inner liner 3. The sealing foam 5 is used to seal the gap between the lower protrusion 47 and the bottom wall of the inner liner 3.

[0140] A downward protrusion 47 extending into the cooling duct 6 is provided at the lower end of the heat-conducting plate 4. The cooling duct 6 is located in the bottom area of ​​the inner liner 3, and there is usually a small gap between the two required for structural assembly. If this gap is not effectively sealed, the following problems may occur during operation: First, condensate may leak out of the structural gap during the guiding process, causing water stains to accumulate inside the structure or material corrosion; second, cold air in the duct may leak into non-target areas through this gap, resulting in decreased cooling efficiency, disordered airflow, and even affecting the accuracy of temperature control; third, if this area is in a high-humidity state, condensation may easily occur due to temperature differences, affecting the cleanliness and service life of the equipment.

[0141] A sealing foam 5 is installed between the lower protruding edge 47 and the bottom wall of the inner liner 3 to effectively seal the structural gaps and prevent gas and moisture from leaking or seeping out from this area. The sealing foam 5 is usually made of materials with elasticity and compression resilience, such as EPDM foam and PE foam. During assembly, it is compressed to form a close fit, ensuring reliable sealing, while allowing a certain degree of structural tolerance. It has strong adaptability and does not affect assembly efficiency.

[0142] Reference Figure 7 In one embodiment of this application, the heat-conducting plate 4 is provided with a water-guiding structure 43, which guides water on the heat-conducting plate 4. A water storage box 17 is disposed in the storage chamber 7. The water storage box 17 is used to store the water guided by the water-guiding structure 43.

[0143] During refrigeration operation, the surface of the heat-conducting plate 4 is prone to condensation due to temperature differences. If not effectively managed, water droplets may spread on the surface and drip into the storage space, not only contaminating the stored items but also potentially affecting the internal structure, electronic components, or humidity control system of the equipment. Therefore, a water-guiding structure 43 is installed on the heat-conducting plate 4 to guide surface moisture to a predetermined collection path, preventing uncontrolled diffusion or accumulation within the storage space.

[0144] The water storage box 17, serving as the terminal receiving structure of this drainage system, is located within the storage chamber 7, typically in a low-lying area below or to one side of the heat-conducting plate 4. Its structure can be an open box or a drawer-type design, offering good collection capacity and ease of operation. Condensate, collected by the water guiding structure 43, falls naturally into the water storage box 17 by gravity, forming a closed condensate treatment path and ensuring a dry and clean storage environment.

[0145] Furthermore, this structure is highly modular and maintenance-friendly. Since the water storage box 17 is typically a separate, detachable component, users or maintenance personnel can periodically empty, clean, or replace it according to the water level, without requiring complex tools or system downtime, significantly improving the user experience and maintenance efficiency. Simultaneously, as a temporary water storage structure, the water storage box 17 can also be used in conjunction with the humidification system in the equipment to achieve condensate recovery and reuse, improving the system's energy efficiency and resource utilization.

[0146] The combination of the water guiding structure 43 and the water storage box 17 also has the advantages of simple structural integration and strong adaptability. The gravity transfer of liquid can be completed between the two without a complicated conduit system, reducing the number of system components and potential leakage points, which is conducive to achieving a compact and integrated equipment layout, while reducing manufacturing costs and assembly difficulty.

[0147] Reference Figure 7 and Figure 8In one embodiment of this application, the water guiding structure 43 is used to guide water to the air outlet 164 of the turbulence fan, so that the water flows into the fan box 16 through the air outlet 164. The bottom wall of the fan box 16 is provided with a box drain outlet 165, which is used to discharge the water in the fan box 16 to the water storage box 17.

[0148] The water guiding structure 43 actively guides the condensate on the surface of the heat-conducting plate 4 to the air outlet 164 area of ​​the turbulence fan through slopes, drainage channels, or water guiding openings 46. This design cleverly utilizes the existing air outlet structure as a drainage channel, achieving path control and integrated management of condensate without adding additional water guiding components. Under the action of gravity, the water flows naturally along the water guiding structure 43 into the air outlet 164 of the turbulence fan, and further enters the fan box 16 connected to it, completing the guided transition.

[0149] The fan box 16, as a system airflow circulation component, also serves as a condensate storage and guidance function in this embodiment. Its bottom wall is equipped with a dedicated drain outlet 165 to promptly discharge the condensate collected within it into the water storage box 17 below, preventing water accumulation from affecting fan operation or corroding components. In this embodiment, water is guided to the turbulence fan outlet 164 via the water guiding structure 43, and then discharged into the water storage box 17 via the drain outlet 165 of the fan box 16. This constructs a condensate drainage system with a clear path, compact structure, and high reliability, significantly enhancing the drainage capacity and environmental adaptability of the refrigeration equipment 100 under high humidity operating conditions.

[0150] Reference Figure 7 In one embodiment of this application, a water guiding structure 43 is disposed on the side of the heat-conducting plate 4 facing the air duct cover plate 13. The water guiding structure 43 is disposed at the bottom of the heat-conducting plate 4. The water guiding structure 43 includes a water guiding edge 44, which extends obliquely downward.

[0151] As a cold energy conduction structure, the side of the heat-conducting plate 4 facing the air duct cover 13 is usually the non-storage space side, which is the main area for condensation formation and collection. Placing the water-guiding structure 43 on this side and close to the bottom of the heat-conducting plate 4 helps to guide the surface condensation to the lowest point by utilizing the natural tendency of gravity, preventing water droplets from spreading, lingering, or dripping onto non-target areas on the surface of the heat-conducting plate 4, thereby enhancing the controllability and safety of the drainage path.

[0152] The water guide edge 44, a key component of the water guide structure 43, is a slender edge or protrusion extending downwards at an angle along the water flow direction. This forms a stable flow channel interface, allowing water collected on the surface of the heat-conducting plate 4 to slide down its slope towards the water guide opening 46, the drain outlet 165 of the housing, or subsequent collection components. This inclined design not only improves water flow velocity and drainage efficiency but also prevents water droplets from stagnating or scattering due to surface tension, effectively preventing splashing and backflow.

[0153] The water guiding structure 43 is positioned close to the side of the air duct cover 13, providing good structural integration and spatial adaptability. Since this area is usually an internal part of the equipment and not visible to the user, the water guiding structure 43 will not affect the appearance or usable volume of the storage space. At the same time, it is easy to integrate with other functional modules such as the turbulence air duct 14, the fan box 16, and the drain opening to build a complete condensate management system.

[0154] In one embodiment of this application, the lower end of the water guide 44 extends into the air outlet 164 of the turbulence fan. By extending the end of the water guide 44 into the internal space of the air outlet, water droplets can be prevented from being deflected, dripped, or splashed due to airflow disturbance, vibration, or surface tension before falling into the air outlet, effectively improving the accuracy and stability of condensate water introduction.

[0155] In another embodiment of this application, the lower end of the water guide 44 is located above the air outlet 164 of the turbulence fan and its downward projection is located inside the air outlet 164. This design ensures that the condensate falls accurately into the target area without intruding into the main airflow area of ​​the duct, and has the advantages of simple structure, easy manufacturing, and minimal interference. This solution is suitable for systems with high requirements for airflow distribution within the duct, avoiding the water guide structure 43 from affecting the fan's airflow efficiency, while also reducing structural interference and assembly complexity.

[0156] Reference Figure 7 In one embodiment of this application, the air outlet 164 of the turbulence fan opens upwards. The water guiding structure 43 includes a first water guiding edge 441 and a second water guiding edge 442. The first water guiding edge 441 extends downwards at an angle from the left edge of the heat-conducting plate 4. The lower end of the first water guiding edge 441 is close to the left side wall of the air outlet 164 of the turbulence fan. The second water guiding edge 442 extends downwards at an angle from the right edge of the heat-conducting plate 4. The lower end of the second water guiding edge 442 is close to the right side wall of the air outlet 164 of the turbulence fan.

[0157] In this embodiment, the air outlet 164 of the turbulence fan is arranged with its opening facing upwards, while the water guiding structure 43 adopts a "left-right symmetrical" combination of a first water guiding edge 441 and a second water guiding edge 442: the first water guiding edge 441 extends downwards at an angle from the left edge of the heat-conducting plate 4, with its end close to the left side wall of the air outlet; the second water guiding edge 442 extends downwards at an angle from the right edge of the heat-conducting plate 4, with its end close to the right side wall of the air outlet. This layout firstly creates two independent "left-right mirror" confluence surfaces for the condensate in terms of geometry, so that water droplets formed at any position on the surface of the heat-conducting plate 4 can be quickly drawn along the nearest inclined surface, avoiding overflow or cross-merging on the plate surface.

[0158] Reference Figure 3 and Figure 8In one embodiment of this application, the bottom wall of the fan box 16 extends downward at an angle from near the air outlet 164 of the turbulence fan to the drain outlet 165 of the box.

[0159] The air outlet 164 of the turbulence fan serves as the inlet area for condensate to be introduced into the fan box 16 by the water guiding structure 43, and is the main location where water flows into the fan box 16. By designing the bottom wall of the fan box 16 to extend at an inclination from this inlet towards the drain outlet 165, gravity can be fully utilized to allow condensate to automatically slide along the inclined bottom surface after entering the fan box 16 and quickly converge at the drain outlet 165. This eliminates the need for additional diversion structures or forced drainage devices, thus completing the self-guiding and discharge of water flow and significantly improving the system's drainage efficiency and operational simplicity.

[0160] This tilted design also effectively prevents water from stagnating or accumulating inside the fan box 16. Especially under conditions of frequent equipment start-up and shutdown or large fluctuations in ambient humidity, it can continuously maintain a dry state inside the fan box 16, reducing the risk of performance degradation or failure caused by water vapor corrosion, water accumulation turbulence, or mold growth, and significantly enhancing the system's operational reliability and service life.

[0161] In summary, the refrigeration equipment 100 of this application effectively solves the technical problems existing in the current design, such as high risk of condensation due to large thermal interference between hot and cold zones, unclear condensate drainage path, easy water retention, and poor airflow circulation. It achieves stable temperature and humidity control, efficient condensate drainage, and optimized integrated duct structure. By setting a heat insulation body 8 between the heat-conducting plate 4 and the refrigeration duct 6, the thermal resistance between the storage chamber 7 and the refrigeration duct 6 is increased, the temperature gradient is reduced, and condensation is effectively reduced. The heat insulation body 8 includes a first heat insulation body 81 and a second heat insulation body 82; the differentiated thermal resistance design further improves temperature control accuracy and heat exchange stability.

[0162] In addition, the refrigeration equipment 100 is equipped with a lower return air vent, such as the lower air inlet 1631 located at the bottom of the fan box 16, which can guide the cold air in the storage chamber 7 to flow back from the bottom into the fan circulation system, realize the vertical circulation of airflow, and improve the uniformity of temperature and humidity distribution and refrigeration efficiency inside the box.

[0163] Regarding condensate management, this application provides two drainage paths: On the one hand, a water guiding structure 43 is set at the bottom of the heat-conducting plate 4, and the condensate is guided to the drain outlet at the bottom of the inner liner 3 through the water guiding line 44, the water guiding groove 45 and the water guiding opening 46 to achieve efficient gravity drainage; on the other hand, the water guiding structure 43 can be extended to the air outlet 164 of the turbulence fan, so that the condensate flows into the fan box 16 and is further discharged into the water storage box 17 set below through the drain outlet at the bottom of the fan box 16, thus constructing a complete condensate collection and release system to adapt to different spatial layouts and application needs.

[0164] The refrigeration equipment 100 has a compact overall structure, clear separation between hot and cold zones, reasonable airflow path, reliable condensate drainage, good thermal control performance and system operation stability, and significantly improves the service life and storage performance of the refrigeration equipment 100 in high humidity environments.

[0165] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0166] The detailed descriptions listed above are merely specific descriptions of feasible implementation methods of this patent, and are not intended to limit the scope of protection of this patent. All equivalent implementation methods or modifications that do not depart from the spirit of the technology of this patent should be included within the scope of protection of this patent.

Claims

1. A refrigeration appliance (100), characterized in that, include: Inner liner (3); A heat-conducting plate (4) is disposed inside the inner liner (3), and the heat-conducting plate (4) divides the internal space of the inner liner (3) into a cooling air duct (6) and a storage chamber (7); An evaporator is disposed within the refrigeration duct (6); A duct cover (13) covers the side of the heat-conducting plate (4) away from the cooling duct (6). The duct cover (13) and the heat-conducting plate (4) form a turbulent duct (14). The cold energy in the cooling duct (6) is conducted to the turbulent duct (14) through the heat-conducting plate (4). The turbulent duct (14) includes a turbulent duct inlet (142) and a turbulent duct outlet (141). The turbulent duct outlet (141) is connected to the storage chamber (7). A fan box (16) is provided at the bottom of the storage room (7). The fan box (16) is provided with a turbulence fan inlet (163) and a turbulence fan outlet (164). The turbulence fan outlet (164) is connected to the turbulence duct inlet (142). The turbulence fan inlet (163) is connected to the storage room (7). The turbulence fan inlet (163) includes a lower inlet (1631) provided on the bottom wall of the fan box (16). A turbulence fan (15) is disposed within the fan box (16) and is used to promote gas flow between the storage chamber (7), the fan box (16) and the turbulence duct (14).

2. The refrigeration appliance (100) of claim 1, characterized in that The turbulence fan inlet (163) includes a forward air inlet (1632) disposed on the front wall of the fan box (16).

3. The refrigeration equipment (100) as described in claim 2, characterized in that, The refrigeration equipment (100) includes a water storage box (17) disposed in the storage chamber (7). The water storage box (17) is located below the fan box (16). The fan box (16) includes a front protrusion (166) that protrudes forward relative to the water storage box (17). The bottom wall of the front protrusion (166) forms the lower air inlet (1631), and the front wall of the front protrusion (166) forms the forward air inlet (1632).

4. The refrigeration equipment (100) as described in claim 3, characterized in that, The water storage box (17) is open at the top, and the fan box (16) is also provided with: The humidifying air inlet duct (166) includes a first humidifying air inlet (1661) connected to the storage chamber (7) and a second humidifying air inlet (1662) connected to the water storage box (17); Humidifying air outlet duct (167) includes a first humidifying air outlet (1671) connected to the storage chamber (7) and a second humidifying air outlet (1672) connected to the water storage box (17); A humidifying fan (18) is installed in the humidifying air inlet duct (166). The humidifying fan (18) is used to cause the gas in the storage chamber (7) to enter the water storage box (17) through the humidifying air inlet duct (166) for humidification, and then return to the storage chamber (7) through the humidifying air outlet duct (167).

5. The refrigeration appliance (100) of claim 1, wherein, The heat-conducting plate (4) is disposed at the rear of the inner liner (3), and the heat-conducting plate (4) is spaced apart from the rear wall of the inner liner (3). The fan box (16) is disposed at the bottom of the storage chamber (7), and the rear end of the top wall of the fan box (16) forms the turbulence fan outlet (164).

6. The refrigeration appliance (100) of claim 5, characterized in that The duct cover (13) and the lower end of the heat-conducting plate (4) form the turbulence duct inlet (142), and the left side wall, right side wall and front side wall of the duct cover (13) are all formed with the turbulence duct outlet (141).

7. The refrigeration appliance (100) of claim 1, wherein, The inner liner (3) includes a first inner liner wall (31) spaced apart from the heat-conducting plate (4), and the refrigeration device (100) further includes: A partition (9) is disposed between the first inner wall (31) and the heat-conducting plate (4). The partition (9) divides the cooling air duct (6) into a first air duct section (61) and a second air duct section (62). The second air duct section (62) is closer to the first inner wall (31) than the first air duct section (61). The evaporator is disposed in the second air duct section (62). A cooling fan (10) is disposed in the first air duct section (61), and the cooling fan (10) is used to promote gas flow between the first air duct section (61) and the second air duct section (62).

8. The refrigeration appliance (100) of claim 1, wherein, The lower air inlet (1631) includes several strip-shaped openings arranged side by side in the left-right direction.

9. The refrigeration appliance (100) of claim 1, wherein, The duct cover (13) is connected to the heat-conducting plate (4) by a snap-fit ​​structure and / or fasteners.

10. The refrigeration appliance (100) of claim 1, wherein, The heat-conducting plate (4) is connected to the inner liner (3) by a snap-fit ​​structure and / or fasteners.

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