Refrigeration appliance

Abstract

The application provides a refrigeration device. It comprises a storage chamber, an ice chamber for setting an ice maker and / or an ice storage box, the ice chamber being arranged in the storage chamber, a first pipeline arranged outside the storage chamber, the first pipeline comprising an air inlet and an air outlet, the first pipeline further comprising a contraction section between the air inlet and the air outlet, the pipe diameter at the contraction section being smaller than the pipe diameter of the rest of the first pipeline, a first interface being formed at the contraction section, a second pipeline comprising a first opening and a second opening, the first opening being in communication with the inside of the storage chamber, the second opening being connected to the first interface, and a fan for making the gas outside the storage chamber flow into the first pipeline through the air inlet and then flow out from the air outlet. In this way, the gas in the storage chamber can be discharged through the pipeline, the pressure in the storage chamber is lower than the pressure in the ice chamber, the gas in the storage chamber is prevented from entering the inside of the ice chamber, and the cleanliness of the inside of the ice chamber is ensured.

Description

Technical Field

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

[0002] As users' demands for ice quality increase, more and more refrigerators are equipped with ice-making functions. To avoid odor transfer when ice and food share the same storage space, current technology typically designs the ice-making compartment as a separate room with its own refrigeration system to improve the cleanliness of ice making. However, in practical applications, existing designs have the following drawbacks: due to potential gaps in the walls of the ice-making compartment, gases from outside the ice-making compartment may enter, contaminating the ice-making environment and affecting the quality and hygiene of the ice. Utility Model Content

[0003] The purpose of this application is to provide a refrigeration device that, by blowing a fan through a pipe with a contraction section, allows gas in the storage compartment to be discharged through the pipe, making the pressure in the storage compartment lower than the pressure in the ice-making compartment, thus preventing gas in the storage compartment from entering the ice-making compartment and ensuring the cleanliness of the ice-making compartment.

[0004] To achieve the above-mentioned objectives, one embodiment of this application provides a refrigeration device, the refrigeration device comprising:

[0005] Storage room;

[0006] An ice room, which is used to house an ice maker and / or an ice storage box, is located in the storage room;

[0007] A first pipe is disposed outside the storage room. The first pipe includes an air inlet and an air outlet. The first pipe also includes a constriction section located between the air inlet and the air outlet. The diameter of the constriction section is smaller than the diameter of the rest of the first pipe. A first interface is formed at the constriction section.

[0008] The second pipe includes a first opening and a second opening, the first opening communicating with the interior of the storage room, and the second opening being connected to the first interface.

[0009] A fan is used to allow external air from the storage compartment to flow into the first pipe through the air inlet and then out through the air outlet.

[0010] As one embodiment of this application, the refrigeration device includes:

[0011] The machine room, the first pipe is disposed in the machine room, and the fan is disposed in the machine room;

[0012] A condenser is provided in the machine room, and the fan is used to direct the gas in the machine room to the condenser.

[0013] In one embodiment of this application, the first pipe is disposed between the condenser and the fan, the air inlet is opposite to the air outlet of the fan, the air outlet is opposite to the condenser, and the gas flowing out from the air outlet flows to the condenser.

[0014] In one embodiment of this application, the machine room is located below the storage room, and a drain outlet is formed on the bottom wall of the storage room. The first opening is connected to the drain outlet, and the water flowing into the drain outlet is discharged through the second pipe.

[0015] As one embodiment of this application, the second conduit includes:

[0016] The main pipe extends vertically, with the first opening formed at the upper end and the third opening formed at the lower end. The main pipe has a second interface located between the first opening and the third opening. Water flowing into the main pipe from the drain outlet is discharged through the third opening.

[0017] A branch pipe includes a first end and a second end, wherein the first end is connected to the second interface and the second end is connected to the first interface.

[0018] In one embodiment of this application, the refrigeration equipment includes a valve, which is disposed on the main pipe and located below the second interface, and the valve is used to open and close the portion of the main pipe located below the second interface.

[0019] In one embodiment of this application, the main pipe has a downward-facing stepped surface, the stepped surface being located between the second interface and the third opening, and the valve includes:

[0020] A sealing plate, which is pivotally disposed within the main pipe, is located below the stepped surface;

[0021] An elastic element connects the sealing plate and the main pipe wall. When there is no water above the sealing plate, the sealing plate abuts against the step surface under the elastic force of the elastic element to seal the main pipe section located below the second interface. When the weight of the water above the sealing plate is greater than the elastic force of the elastic element, the sealing plate swings downward, allowing the water to drain through the third opening.

[0022] In one embodiment of this application, the storage room is a refrigerator, a freezer, or a variable temperature room.

[0023] In one embodiment of this application, the second interface is located in the machine room, the branch pipe is integrally formed with the first pipe, and the first end is plugged into the second interface.

[0024] In one embodiment of this application, the diameter of the first pipe gradually increases from the constriction section to the air inlet, and the diameter of the first pipe gradually increases from the constriction section to the air outlet.

[0025] Compared with the prior art, the present application has the following advantages by using a fan to blow through a pipe with a contraction section: it allows the gas in the storage chamber to be discharged through the pipe, making the pressure in the storage chamber lower than the pressure in the ice-making chamber, preventing the gas in the storage chamber from entering the ice-making chamber, and ensuring the cleanliness of the ice-making chamber. 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 central storage room and related structures;

[0029] Figure 3 yes Figure 2 Schematic diagram of the structure of the first and second pipes in the middle section;

[0030] Figure 4 yes Figure 3 A sectional view;

[0031] Figure 5 yes Figure 1 A schematic diagram of the central storage room and related structures;

[0032] Figure 6 yes Figure 5 A partial view of the sectional view;

[0033] Figure 7 yes Figure 3 A schematic diagram of the integrated structure of the first pipeline and branch pipelines;

[0034] Figure 8 yes Figure 3 A schematic diagram of the main pipeline.

[0035] Among them, 1. Storage room; 11. Drain outlet; 2. Ice room; 21. Ice maker; 22. Partition plate; 23. Ice evaporation chamber; 3. First pipe; 31. Air inlet; 32. Air outlet; 33. Contraction section; 34. First interface; 4. Second pipe; 41. First opening; 42. Second opening; 43. Main pipe; 44. Third opening; 45. Branch pipe; 46. First end; 47. Second end; 48. Second interface; 49. Step surface; 5. Fan; 6. Machinery room; 7. Condenser; 8. Valve; 81. Sealing plate; 9. Inner liner; 100. Refrigeration equipment. Detailed Implementation

[0036] 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.

[0037] Reference Figure 1 and Figure 2 This application provides a refrigeration device 100. The refrigeration device 100 includes a storage compartment 1. The refrigeration device 100 includes an ice compartment 2. The ice compartment 2 is used to house an ice maker 21 and / or an ice storage box. The ice compartment 2 is disposed within the storage compartment 1. The storage compartment 1 can be a freezer compartment. The storage compartment 1 can also be a refrigerator compartment or a variable temperature compartment, etc.

[0038] The refrigeration equipment 100 may include a partition 22 disposed within the storage compartment 1. The partition 22 may be spaced apart from the top wall of the storage compartment 1. The partition 22, together with the left and right side walls and the rear wall of the storage compartment 1, forms an ice chamber 2.

[0039] In this application, the vertical direction refers to the height direction of the refrigeration equipment 100.

[0040] The refrigeration equipment 100 may include a storage cooling system for supplying cooling to the storage chamber 1. The storage cooling system may include a storage evaporation chamber, a storage evaporator disposed within the storage evaporation chamber, and a storage fan 5 disposed within the storage evaporation chamber. The storage cooling system may also include a storage supply air duct and a storage return air duct connecting the storage evaporation chamber and the storage chamber 1. When the storage fan 5 is running, the low-temperature cold air in the storage evaporation chamber enters the storage chamber 1 through the storage supply air duct, thereby lowering the temperature of the storage chamber 1. The gas in the storage chamber 1 then enters the evaporator chamber through the storage return air duct and flows through the evaporator to exchange heat with it, forming low-temperature cold air.

[0041] The refrigeration equipment includes an inner liner 9. The storage chamber in this application can refer to the internal space enclosed by the inner liner 9. A storage evaporation chamber can be located within the storage chamber. For example, the storage evaporation chamber is located at the rear inner side of the storage chamber 1.

[0042] The refrigeration equipment 100 may include an ice-making and cooling system for supplying cooling to the ice chamber 2. The ice-making and cooling system may include an ice-making evaporation chamber 23, an ice-making evaporator disposed within the ice-making evaporation chamber 23, and an ice-making fan 5 disposed within the ice-making evaporation chamber 23. The ice-making and cooling system may also include an ice-making supply air duct and an ice-making return air duct connecting the ice-making evaporation chamber 23 and the ice chamber 2. When the ice-making fan 5 is running, the low-temperature cold air in the ice-making evaporation chamber 23 enters the ice chamber 2 through the ice-making supply air duct, thereby lowering the temperature of the ice chamber 2. The gas in the ice chamber 2 enters the evaporator chamber through the ice-making return air duct and flows through the evaporator to exchange heat with the evaporator, forming low-temperature cold air. The ice-making evaporation chamber 23 may be disposed within the ice chamber 2. Providing independent cooling to the ice chamber 2 through the ice-making refrigeration system ensures the cleanliness of the interior of the ice chamber 2, prevents cross-contamination of odors between other compartments of the ice chamber 2 refrigeration equipment 100, and guarantees the cleanliness of the ice.

[0043] Reference Figures 2 to 4 The refrigeration equipment 100 includes a first pipe 3. The first pipe 3 is located outside the storage compartment 1. The first pipe 3 includes an air inlet 31 and an air outlet 32. The first pipe 3 also includes a constriction section 33 located between the air inlet 31 and the air outlet 32. The diameter of the pipe at the constriction section 33 is smaller than the diameter of the rest of the first pipe 3. A first interface 34 is formed at the constriction section 33.

[0044] The refrigeration equipment 100 includes a second pipe 4. The second pipe 4 includes a first opening 41 and a second opening 42. The first opening 41 communicates with the interior of the storage compartment 1. The second opening 42 is connected to a first interface 34.

[0045] Reference Figure 5 and Figure 6 The refrigeration equipment 100 includes a fan 5. The fan 5 is used to allow external air from the storage compartment 1 to flow into the first pipe 3 through the air inlet 31 and then out through the air outlet 32.

[0046] When the gas flows through the contraction section 33, a low-pressure area is formed at the contraction section 33, which causes the gas inside the storage chamber 1 to flow into the first pipe 3 through the second pipe 4 and be discharged from the outlet 32.

[0047] Although ice room 2 is designed as a separate room from storage room 1, due to manufacturing tolerances, structural connections, and other factors, there may still be tiny connection gaps on the walls of ice room 2. This can lead to gas exchange between ice room 2 and storage room 1, causing ice contamination and affecting the quality and hygiene of the ice.

[0048] This application utilizes the low-pressure effect of the contraction section in the gas flow section, namely the Venturi effect, by setting up a first pipe 3, a second pipe 4, and a fan 5, to actively guide the gas inside the storage chamber 1 to flow out.

[0049] In this application, the first pipe 3 has an inlet 31, an outlet 32, and a contraction section 33 located between them, with the diameter of the contraction section 33 being smaller than that of other pipe sections. According to the fluid continuity equation and Bernoulli's equation, when gas flows through the contraction section 33, the gas velocity increases, the kinetic energy rises, and the static pressure decreases, forming a local low-pressure area at the contraction section 33. A first interface 34 located at the contraction section 33 is connected to a second pipe 4, and the first opening 41 of the second pipe 4 communicates with the interior of the storage chamber 1. Therefore, the low-pressure area generated by the contraction section 33 draws the gas inside the storage chamber 1 to the first pipe 3 through the second pipe 4, realizing the active extraction of gas from the storage chamber 1.

[0050] As the gas inside storage chamber 1 is continuously discharged, the pressure inside storage chamber 1 decreases compared to the pressure inside ice chamber 2, creating a pressure difference where the pressure in ice chamber 2 is greater than that in storage chamber 1. This pressure difference effectively inhibits the permeation of gas from storage chamber 1 into ice chamber 2, even if there are tiny gaps in the walls of ice chamber 2. Instead, it directs any potential micro-leakage towards storage chamber 1, thus ensuring the cleanliness of the environment inside ice chamber 2.

[0051] By managing the pressure difference between ice chamber 2 and storage chamber 1, it is possible to effectively prevent odorous gases, impurities, or moisture that may be present in storage chamber 1 from entering ice chamber 2, thereby fundamentally improving the hygiene, safety, and taste quality of the ice cubes in ice chamber 2 and meeting users' demand for high-quality ice cubes.

[0052] This application, through a rationally designed pipeline structure and the operation of the fan 5, enables control of the internal air pressure difference of the refrigeration equipment 100. It features a simple structure, low power consumption, and easy integration into existing refrigerator products.

[0053] Reference Figure 5 and Figure 6 In one embodiment of this application, the refrigeration device 100 includes a machine compartment 6. A first pipe 3 is disposed within the machine compartment 6. A fan 5 is disposed within the machine compartment 6. The refrigeration device 100 includes a condenser 7. The condenser 7 is disposed within the machine compartment 6. The fan 5 is used to direct the gas within the machine compartment 6 towards the condenser 7.

[0054] The refrigeration equipment 100 may further include a compressor disposed within the machine compartment 6. The condenser 7, compressor, and storage evaporator can be connected via refrigerant piping. The condenser 7, compressor, and ice-making evaporator can also be connected via refrigerant piping. The refrigeration equipment 100 may include a housing. The storage compartment 1 may be formed inside the housing. The machine compartment 6 may be located at the bottom of the housing.

[0055] This embodiment integrates the first pipe 3, fan 5, and condenser 7 within the machine room 6, effectively utilizing the space of the machine room 6, simplifying the overall structural layout, reducing the number of parts, which helps control costs and improves the convenience of manufacturing and assembling the whole machine.

[0056] The fan 5 not only facilitates the flow of gas through the contraction section 33 of the first pipe 3, creating a low-pressure zone and enabling the extraction of gas from the storage chamber 1, but also guides the gas flow within the machine chamber 6, ensuring an orderly flow of gas towards the condenser 7. The directional airflow generated by the fan 5 enhances the heat exchange efficiency of the condenser 7 surface, strengthens the heat dissipation performance of the refrigeration system, and ensures the operational stability of the compressor and related components.

[0057] The condenser 7 in the mechanical compartment 6 is responsible for releasing heat from the high-temperature, high-pressure refrigerant in the refrigeration circuit. By installing a fan 5 to actively direct the gas through the condenser 7, especially to direct the low-temperature gas discharged from the storage compartment 1 to the condenser 7, the refrigerant condensation time can be shortened, the temperature of the condenser 7 can be reduced, thereby improving the efficiency and energy efficiency ratio of the entire refrigeration circuit and improving the overall energy consumption performance of the equipment.

[0058] By driving airflow circulation through fan 5, not only is the gas exhaust function of storage chamber 1 realized, but the heat dissipation environment inside mechanical chamber 6 is also improved simultaneously, which helps the refrigeration system of refrigeration equipment 100 to operate stably, extend its service life, and improve the reliability and durability of the whole machine.

[0059] This application integrates the first pipe 3, fan 5, and condenser 7 inside the machine room 6. By using the fan 5 to drive the airflow in the machine room 6 through the contraction section 33 and the condenser 7, it not only achieves the exhaust of gas from the storage room 1 and the cleanliness of the ice room 2, but also simultaneously optimizes the heat dissipation conditions and airflow organization inside the machine room 6. This has multiple beneficial effects, such as improved cooling performance, reduced overall energy consumption, and a compact structure.

[0060] Reference Figure 5 and Figure 6 In one embodiment of this application, the first pipe 3 is disposed between the condenser 7 and the fan 5. The air inlet 31 is opposite to the air outlet of the fan 5. The air outlet 32 ​​is opposite to the condenser 7, and the gas flowing out of the air outlet 32 ​​flows towards the condenser 7.

[0061] In this embodiment, the first pipe 3 is disposed between the condenser 7 and the fan 5. The air inlet 31 is opposite to the air outlet of the fan 5, and the air outlet 32 ​​is opposite to the condenser 7. This allows the gas flowing into the first pipe 3 from the air inlet 31 to flow out from the air outlet 32 ​​and directly to the condenser 7 after the gas in the storage chamber 1 is drawn out through the low-pressure zone formed by the contraction section 33.

[0062] Storage chamber 1 is a low-temperature environment, with the internal gas temperature significantly lower than the ambient temperature of machine room 6 or the external ambient temperature. Therefore, compared to conventional fans 5 directly drawing in high-temperature air from machine room 6 or outdoors, the gas discharged in this application has lower temperature characteristics.

[0063] The low-temperature gas in storage chamber 1 is driven by fan 5 and flows at a higher velocity through the first pipe 3 to the surface of condenser 7. When it exchanges heat with the high temperature on the surface of condenser 7, the temperature difference is greater. According to the basic principle of heat transfer, the heat transfer rate is proportional to the temperature difference. Therefore, the heat transfer efficiency of condenser 7 can be significantly improved, and the heat dissipation process of condenser 7 can be accelerated.

[0064] The enhanced heat dissipation capacity of condenser 7 leads to a decrease in condensing pressure and a corresponding reduction in refrigerant condensation temperature, thereby reducing compressor power consumption, improving compressor operating efficiency, and further enhancing the overall energy efficiency of the unit. This application utilizes low-temperature gas extracted from storage chamber 1 for heat exchange in condenser 7, which not only increases the heat dissipation rate of condenser 7 but also effectively controls the internal temperature of mechanical chamber 6, improving overall performance and durability, thus creating a synergistic effect.

[0065] Reference Figure 5 and Figure 6 In one embodiment of this application, the machine room 6 is located below the storage room 1. A drain outlet 11 is formed on the bottom wall of the storage room 1. A first opening 41 is connected to the drain outlet 11, and water flowing into the drain outlet 11 is discharged through a second pipe 4.

[0066] Due to the low temperature inside storage compartment 1, water vapor in the air easily condenses into water droplets and accumulates on the bottom wall surface. By forming a drain outlet 11 on the bottom wall of storage compartment 1 and connecting the drain outlet 11 to the second pipe 4, the condensate can flow naturally into the drain outlet 11 and be discharged through the second pipe 4, thus preventing water droplets from accumulating inside storage compartment 1 and keeping the storage environment dry and clean.

[0067] As the blower 5 operates, it creates a negative pressure zone through the first pipe 3, which draws airflow into the second pipe 4, creating a negative pressure environment within the second pipe 4. Therefore, water entering the second pipe 4 under gravity can be discharged more quickly with the assistance of airflow, improving drainage speed and reliability, and reducing drainage stagnation.

[0068] This application simplifies the structural design of the refrigeration equipment 100 by utilizing the second pipe 4 to perform both gas extraction and condensate drainage, thereby reducing manufacturing costs and maintenance complexity. By setting a drain outlet 11 on the bottom wall of the storage chamber 1 and connecting the drain outlet 11 to the second pipe 4, the application achieves simultaneous discharge of gas and condensate from the storage chamber 1 under the drive of the fan 5. This further optimizes the drying, mildew prevention, and drainage performance of the storage chamber 1, forming a simple, efficient, safe, and reliable gas-liquid co-drainage system.

[0069] Reference Figures 3 to 6In one embodiment of this application, the second pipe 4 includes a main pipe 43. The main pipe 43 extends vertically. The main pipe 43 can extend vertically or inclined vertically. A first opening 41 is formed at the upper end of the main pipe 43. A third opening 44 is formed at the lower end of the main pipe 43. The main pipe 43 has a second interface 48. The second interface 48 is located between the first opening 41 and the third opening 44, and water flowing into the main pipe 43 from the drain outlet 11 is discharged through the third opening 44.

[0070] The second pipe 4 includes a branch pipe 45. The branch pipe 45 includes a first end 46 and a second end 47. The first end 46 is connected to the second interface 48. The second end 47 is connected to the first interface 34.

[0071] This embodiment achieves gas-liquid separation and optimizes the discharge path by setting up a main pipe 43 and a branch pipe 45. The main pipe 43 is mainly responsible for discharging liquid, i.e., water from storage chamber 1. The branch pipe 45 is responsible for the extraction and discharge of gas. Water flows into the main pipe 43 from the drain outlet 11 on the bottom wall of storage chamber 1, and flows directly from top to bottom under the action of gravity to the third opening 44 at the lower end of the main pipe 43 for discharge. Meanwhile, the gas inside storage chamber 1 flows into the branch pipe 45 through the second interface 48 in the middle of the main pipe 43, and is then discharged with the airflow through the first pipe 3.

[0072] By separating the gas and water flows, interference between gas extraction and water discharge is avoided, improving the overall efficiency and stability of the drainage and extraction systems. Branch pipe 45 extends from the middle of the main pipe 43 and connects to the low-pressure zone formed by the contraction section 33 of the first pipe 3, allowing the gas inside the storage chamber 1 to be continuously drawn out. Simultaneously, the natural downward flow of water within the main pipe 43 does not obstruct the extraction from the branch pipe 45, ensuring the continuity and stability of the negative pressure extraction effect.

[0073] By guiding water and gas to different outlets, the risks of damage, blockage, and efficiency reduction caused by liquid entering the fan 5 or contraction section 33 are effectively avoided, thus improving the overall safety and durability of the refrigeration equipment 100. This application, through the diversion structure design of the main pipe 43 and branch pipe 45 of the second pipe 4, achieves coordinated control of natural drainage of condensate from the storage chamber 1 and efficient gas extraction from the storage chamber 1, effectively improving the cleanliness of the internal environment of the refrigeration equipment 100, the stability of system operation, and the reliability of the entire unit.

[0074] Reference Figures 3 to 6 In one embodiment of this application, the refrigeration equipment 100 includes a valve 8, which is disposed on the main pipe 43 and located below the second interface 48. The valve 8 is used to open and close the portion of the main pipe 43 located below the second interface 48.

[0075] By installing valve 8 below the second interface 48 of the main pipe 43, the opening or closing state of the lower section of the main pipe 43 can be controlled as needed. When valve 8 is closed, it prevents condensate from flowing out of the storage chamber 1 along the lower section of the main pipe 43; when valve 8 is open, it allows condensate to drain freely. This structure makes the water discharge process controllable, improving the flexibility and safety of the refrigeration equipment 100 operation.

[0076] Under specific operating conditions, such as high-load operation of fan 5 or increased condensation due to high humidity in storage chamber 1, the water flow in main pipe 43 may be drawn towards branch pipe 45 due to airflow interference. By installing valve 8 below main pipe 43 and closing it when necessary, the possibility of water flowing upward can be effectively blocked, further isolating the water-air path, ensuring the purity and stability of airflow extraction in branch pipe 45, preventing liquid from entering first pipe 3 or fan 5, and preventing system damage.

[0077] In one embodiment of this application, the main pipe 43 has a downward-facing stepped surface 49 located between the second interface 48 and the third opening 44. The valve 8 includes a sealing plate 81. The sealing plate 81 is pivotally disposed within the main pipe 43. The sealing plate 81 is located below the stepped surface 49.

[0078] Valve 8 includes a resilient element. The resilient element connects the sealing plate 81 and the wall of the main pipe 43. When there is no water above the sealing plate 81, the sealing plate 81 abuts against the stepped surface 49 under the elastic force of the resilient element, thereby sealing the portion of the main pipe 43 located below the second interface 48. When the weight of the water above the sealing plate 81 exceeds the elastic force of the resilient element, the sealing plate 81 swings downward, allowing the water to drain through the third opening 44. The resilient element can be a spring.

[0079] Through the coordinated action of the elastic element and the sealing plate 81, when the condensate formed in the storage chamber 1 flows into the main pipe 43 through the drain outlet 11 and accumulates above the sealing plate 81, the gravity of the water gradually increases as the water volume increases. When the gravity exceeds the elastic force of the elastic element, the sealing plate 81 is pressed down and opened, and the condensate is naturally discharged through the third opening 44 of the main pipe 43. After the water is drained, the sealing plate 81, under the reset action of the elastic element, abuts against the step surface 49 again, closing the lower outlet of the main pipe 43, thus forming an adaptive drainage system that opens when water comes in and closes when water is drained.

[0080] When the fan 5 starts, a negative pressure environment is formed in the second pipe 4, which causes the sealing plate 81 installed in the main pipe 43 to be sucked up and abutted against the step surface 49 under the combined action of the elastic force of the elastic element, thereby closing the part of the main pipe 43 located below the second interface 48 and preventing external gas from entering the branch pipe 45 from the third opening 44.

[0081] This application not only relies on the elastic element to provide upward elastic force so that the sealing plate 81 abuts against the step surface 49 to form a seal, but also uses the negative pressure attraction generated in the second pipe 4 when the fan 5 is started to further enhance the upward suction effect of the sealing plate 81. The superposition of elastic force and negative pressure suction makes the sealing plate 81 seal the main pipe 43 more tightly in the absence of water or low water level state, effectively preventing gas leakage or water vapor backflow.

[0082] When the fan 5 operates to extract gas from the storage chamber 1, the negative pressure traction helps the sealing plate 81 to firmly close the area below the main pipe 43, preventing external gas, moisture, impurities, etc., from flowing back into the storage chamber 1 or branch pipe 45 through the third opening 44, ensuring the purity of the extracted gas flow and the stability of the extraction effect. Through the negative pressure-assisted sealing structure of this embodiment, the airtight barrier between the mechanical chamber 6 and the storage chamber 1 of the refrigeration equipment 100 can be significantly improved, preventing the diffusion of odors and pollution from the storage chamber 1 and preventing abnormal operation, thereby improving the environmental control level and operational safety of the entire refrigeration equipment 100.

[0083] Reference Figure 5 and Figure 6 In one embodiment of this application, the second interface 48 is located inside the machine room 6.

[0084] Reference Figure 7 and Figure 8 In one embodiment of this application, the branch pipe 45 is integrally formed with the first pipe 3. The first end 46 is inserted into the second interface 48. The integral formation of the branch pipe 45 and the first pipe 3 eliminates the need for a joint connection between the branch pipe 45 and the first pipe 3, avoiding the risk of air leakage caused by tolerance, aging, loosening, or other issues at the joint, and improving the airtightness and long-term operational reliability of the entire gas extraction system.

[0085] By integrally injection molding or one-piece molding of the branch pipe 45 and the first pipe 3, the number of parts can be simplified and production costs reduced. Simultaneously, during assembly, the first end 46 of the branch pipe 45 only needs to be plugged into the second interface 48, simplifying the installation process and improving production efficiency. The integrated design of the branch pipe 45 and the first pipe 3, along with its plug-in connection to the second interface 48, allows for quick disassembly and replacement through simple plug-and-play operations when maintenance or component replacement is required. This makes maintenance convenient and efficient, reducing the complexity and time costs of after-sales maintenance for refrigeration equipment.

[0086] Reference Figure 3 and Figure 4 , Figure 7 and Figure 8 In one embodiment of this application, the diameter of the first pipe 3 gradually increases from the contraction section 33 to the air inlet 31. The diameter of the first pipe 3 also gradually increases from the contraction section 33 to the air outlet 32.

[0087] In this embodiment, the diameter of the first pipe 3 gradually increases from the constriction section 33 to the air inlet 31, and at the same time, the diameter also gradually increases from the constriction section 33 to the air outlet 32. That is, the constriction section 33 is located in the middle of the first pipe 3, forming the minimum cross-section for fluid transition, and its two ends gradually expand towards the air inlet 31 and the air outlet 32, respectively.

[0088] This application utilizes a structure with gradually expanding sides of the contraction section 33, conforming to the Venturi effect principle in fluid mechanics. When gas flows in from the inlet 31, it gradually contracts until it reaches the minimum cross-section, i.e., the contraction section 33, where the flow velocity increases and the static pressure decreases. After further passing through the contraction section 33, the gas diffuses within the expansion section, where the velocity decreases and the pressure increases. This bidirectional gradually expanding design helps to create a more stable and continuous low-pressure zone in the middle of the contraction section 33, thereby more effectively drawing gas from inside the storage chamber 1 through the second pipe 4 into the first pipe 3.

[0089] The gradual expansion design on the inlet and outlet sides allows the gas to change its velocity and pressure at a slower rate before entering and after leaving the contraction section 33, avoiding turbulence, vortices, or backflow caused by abrupt changes in cross-section. This improves the flow stability of the airflow channel and further enhances the efficiency of gas extraction from the storage chamber 1 and the reliability of system operation.

[0090] Because the gas velocity changes more smoothly and the resistance loss is lower when flowing in the first pipe 3, a larger effective air flow rate can be achieved without changing the power of the fan 5, thereby improving the energy efficiency of the fan 5 and reducing the overall energy consumption.

[0091] By optimizing the streamline shape of the first pipe 3, a deeper low-pressure valley can be generated in the contraction section 33, thereby strengthening the traction capacity of the second pipe 4, increasing the gas extraction speed and negative pressure formation rate of the storage chamber 1, enabling the storage chamber 1 to quickly form a low-pressure state, effectively preventing gas from the storage chamber 1 from seeping into the ice chamber 2, and ensuring the cleanliness of the ice chamber 2.

[0092] This application optimizes the gas flow path, enhances the stability of the low-pressure zone and the air extraction effect by setting a bidirectional gradually expanding structure in the first pipe 3 with a self-contracting section 33 that gradually increases in the direction of the air inlet 31 and the air outlet 32, while reducing energy loss and improving the airtightness, energy efficiency and overall operating performance of the refrigeration equipment 100.

[0093] In summary, the refrigeration equipment 100 of this application can solve the technical problem in the prior art that external gases may enter the interior of the ice chamber 2, thereby contaminating the ice-making environment and affecting the quality and hygiene safety of the ice.

[0094] The technical solution of this application enables the active guidance of gas outflow from the storage chamber 1. When the gas blown by the fan 5 flows through the contraction section 33, the gas velocity increases, the kinetic energy rises, and the static pressure decreases, forming a local low-pressure zone at the contraction section 33. A first interface 34 located at the contraction section 33 is connected to a second pipe 4, and the first opening 41 of the second pipe 4 connects to the interior of the storage chamber 1. Therefore, the low-pressure zone generated by the contraction section 33 draws the gas inside the storage chamber 1 towards the first pipe 3 through the second pipe 4, achieving active extraction of gas from the storage chamber 1. Because the gas inside the storage chamber 1 is continuously discharged, the pressure inside the storage chamber 1 decreases compared to the pressure inside the ice chamber 2, creating a pressure difference where the pressure in the ice chamber 2 is greater than that in the storage chamber 1. This pressure difference effectively inhibits the permeation of gas from the storage chamber 1 into the ice chamber 2, even if there are tiny gaps in the wall of the ice chamber 2. Instead, it directs any potential micro-leakage towards the storage chamber 1, thus ensuring the cleanliness of the environment inside the ice chamber 2. In addition, the application uses the low-temperature gas in the storage chamber 1 for heat exchange in the condenser 7, which not only improves the heat dissipation rate of the condenser 7, but also effectively controls the internal temperature of the mechanical chamber 6, improving the overall performance and durability, thus creating a synergistic effect.

[0095] 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.

[0096] 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 device (100), characterized in that, The refrigeration equipment (100) includes: Storage room (1); An ice chamber (2) is provided for housing an ice maker (21) and / or an ice storage box, the ice chamber (2) being located within the storage chamber (1); The first pipe (3) is located outside the storage room (1). The first pipe (3) includes an air inlet (31) and an air outlet (32). The first pipe (3) also includes a constriction section (33) located between the air inlet (31) and the air outlet (32). The diameter of the constriction section (33) is smaller than the diameter of the rest of the first pipe (3). A first interface (34) is formed at the constriction section (33). The second pipe (4) includes a first opening (41) and a second opening (42), the first opening (41) being connected to the interior of the storage room (1), and the second opening (42) being connected to the first interface (34). A fan (5) is used to allow external gas from the storage chamber (1) to flow into the first pipe (3) through the air inlet (31) and then out through the air outlet (32).

2. The refrigeration equipment (100) as described in claim 1, characterized in that, The refrigeration equipment (100) includes: The machine room (6) is provided with the first pipe (3) and the fan (5) provided in the machine room (6); A condenser (7) is disposed in the machine room (6), and a fan (5) is used to direct the gas in the machine room (6) to the condenser (7).

3. The refrigeration equipment (100) as described in claim 2, characterized in that, The first pipe (3) is located between the condenser (7) and the fan (5). The air inlet (31) is opposite to the air outlet of the fan (5), and the air outlet (32) is opposite to the condenser (7). The gas flowing out from the air outlet (32) flows to the condenser (7).

4. The refrigeration equipment (100) as described in claim 2, characterized in that, The machine room (6) is located below the storage room (1). The bottom wall of the storage room (1) has a drain outlet (11). The first opening (41) is connected to the drain outlet (11). Water flowing into the drain outlet (11) is discharged through the second pipe (4).

5. The refrigeration equipment (100) as described in claim 4, characterized in that, The second pipe (4) includes: A main pipe (43) extends vertically, with a first opening (41) formed at the upper end of the main pipe (43) and a third opening (44) formed at the lower end of the main pipe (43). The main pipe (43) has a second interface (48) located between the first opening (41) and the third opening (44). Water flowing into the main pipe (43) from the drain outlet (11) is discharged through the third opening (44). A branch pipe (45) includes a first end (46) and a second end (47), the first end (46) being connected to the second interface (48) and the second end (47) being connected to the first interface (34).

6. The refrigeration equipment (100) as described in claim 5, characterized in that, The refrigeration equipment (100) includes a valve (8), which is disposed on the main pipe (43) and located below the second interface (48). The valve (8) is used to open and close the portion of the main pipe (43) located below the second interface (48).

7. The refrigeration equipment (100) as described in claim 6, characterized in that, The main pipe (43) has a downward-facing stepped surface (49) located between the second interface (48) and the third opening (44), and the valve (8) includes: A sealing plate (81) is pivotally disposed within the main pipe (43), the sealing plate (81) being located below the stepped surface (49); An elastic element connects the sealing plate (81) and the wall of the main pipe (43). When there is no water above the sealing plate (81), the sealing plate (81) abuts against the step surface (49) under the elastic force of the elastic element to seal the part of the main pipe (43) located below the second interface (48). When the weight of the water above the sealing plate (81) is greater than the elastic force of the elastic element, the sealing plate (81) swings downward, allowing the water to be discharged through the third opening (44).

8. The refrigeration equipment (100) as described in claim 4, characterized in that, The storage room (1) is a refrigerator, a freezer, or a variable temperature room.

9. The refrigeration equipment (100) as described in claim 5, characterized in that, The second interface (48) is located inside the machine room (6), the branch pipe (45) is integrally formed with the first pipe (3), and the first end (46) is plugged into the second interface (48).

10. The refrigeration equipment (100) as described in claim 1, characterized in that, The diameter of the first pipe (3) gradually increases from the contraction section (33) to the air inlet (31), and the diameter of the first pipe (3) gradually increases from the contraction section (33) to the air outlet (32).

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