refrigerator

Abstract

This utility model relates to the field of household appliances, and in particular to a refrigerator. The refrigerator includes a freezer body, a freezer evaporator, and a Stirling refrigerator. The freezer body includes a compartment and a mounting compartment, with a first partition between the compartment and the mounting compartment. The compartment includes a freezing chamber and a cryogenic chamber. The first partition has a first air vent and a second air vent. The freezing chamber and the first air vent are connected, as are the cryogenic chamber and the second air vent. The freezer evaporator is installed in the mounting compartment and is connected to the first air vent. The Stirling refrigerator is installed in the mounting compartment and includes a cold-end air outlet and a hot-end air outlet. The cold-end air outlet is connected to the second air vent, and the hot-end air outlet faces the freezer evaporator. Its advantages are that it uses a Stirling refrigerator instead of the traditional method of stacking two refrigeration systems, reducing power consumption and eliminating the need for a separate cooling system for the Stirling refrigerator, thus simplifying the structure and reducing costs.

Description

Technical Field

[0001] This utility model relates to the field of household appliances, and in particular to a refrigerator. Background Technology

[0002] Currently, to achieve ultra-low temperature refrigeration inside refrigerators, a two-stage compression technology is used. The first-stage refrigerant is R-12, and the second-stage refrigerant is R-503. The condenser of the second-stage refrigeration system is stacked with the condenser of the first-stage refrigeration system. During refrigeration, the first-stage compressor starts, lowering the temperature of the second-stage condenser and pre-cooling it with R-503 refrigerant. After a certain delay, the second-stage compressor starts working, evaporating the pre-cooled refrigerant to -20℃ to -30℃ through a second-stage evaporator, thus achieving an ultra-low temperature space of -60℃ to -80℃ inside the refrigerator.

[0003] However, the above-mentioned two-stage compression refrigeration system has a complex structure and high cost, and the continuous operation of the two-stage compression results in high energy consumption of the refrigerator. Utility Model Content

[0004] In view of the above-mentioned technical problems, this utility model provides a refrigerator.

[0005] A refrigerator includes: a freezer body comprising a compartment and an installation compartment, wherein a first partition is provided between the compartment and the installation compartment; the compartment includes a freezer cavity and a cryogenic cavity; a first air vent and a second air vent are provided on the first partition; the freezer cavity is connected to the first air vent, and the cryogenic cavity is connected to the second air vent; a freezer evaporator is installed in the installation compartment and is connected to the first air vent; and a Stirling refrigerator is installed in the installation compartment, wherein the Stirling refrigerator includes a cold end air outlet and a hot end air outlet, the cold end air outlet is connected to the second air vent, and the hot end air outlet is oriented towards the freezer evaporator.

[0006] In this configuration, the storage compartment is the freezer space at the front of the refrigerator, used for storage. The installation compartment houses the refrigerator's refrigeration system structure. The refrigeration system delivers cold air to the storage compartment through the first and second air vents. The freezer evaporator and the Stirling refrigerator work together to lower the temperature of the cryogenic cavity, creating an ultra-low temperature environment within the cavity through two cooling processes. Furthermore, compared to traditional compression refrigeration systems, the Stirling refrigerator eliminates the need for components such as compressors, evaporators, and condensers, and operates at lower pressures, resulting in lower energy consumption and reducing the overall energy consumption of the refrigerator. Since the hot-end air outlet of the Stirling refrigerator faces the freezer evaporator, it can utilize the evaporator's cooling capacity for heat dissipation, eliminating the need for additional refrigeration systems such as air-cooled or water-cooled structures. This simplifies the Stirling refrigerator's structure and reduces costs.

[0007] In one embodiment, the installation chamber is provided with a second partition that divides the installation chamber into a first chamber and a second chamber, the refrigeration evaporator is installed in the first chamber, and the Stirling refrigerator is installed in the second chamber.

[0008] In one embodiment, the second partition extends along the height direction of the refrigerator, and along the height direction of the refrigerator, the hot end air outlet of the Stirling refrigerator is located above the cold end air outlet.

[0009] In one embodiment, the installation chamber is provided with a third partition, and the second partition and the third partition are arranged parallel to each other at intervals and cooperate to form the second cavity.

[0010] In one embodiment, a horizontal plate is provided between the second partition and the third partition, with both ends of the horizontal plate connected to the second partition and the third partition respectively, dividing the second cavity into a first segment and a second segment. Along the height direction of the refrigerator, the first segment is located above the second segment, and the length of the first segment in the height direction of the refrigerator is greater than the length of the second segment in the height direction of the refrigerator.

[0011] In one embodiment, the third partition has an air inlet that communicates with the external environment of the installation chamber, and the second partition has an air outlet that communicates with the first chamber and the second chamber.

[0012] In one embodiment, the air outlet, the first air inlet, and the second air inlet are all equipped with fans.

[0013] In one embodiment, along the width direction of the refrigerator, the width of the first cavity is at least twice the width of the second cavity, and the width of the freezing cavity is at least twice the width of the cryogenic cavity.

[0014] In one embodiment, along the height direction of the refrigerator, the freezer cavity includes a storage section and a hollow section, the storage section being used to accommodate drawers, the hollow section being located below the storage section, and the cryogenic cavity being located below the storage section and spaced apart from the hollow section.

[0015] In one embodiment, the bottom of the first partition is configured as an arc-shaped plate along the height direction of the refrigerator.

[0016] Compared to existing technologies, the refrigerator provided by this utility model replaces an entire refrigeration system with a Stirling refrigerator, thereby reducing the need for compressors, condensers, and evaporators, thus reducing energy consumption. Furthermore, the Stirling refrigerator works in conjunction with a refrigeration system to achieve cooling of the deep-cold cavity, and the evaporator in the freezer compartment of the refrigeration system dissipates heat from the Stirling refrigerator. Therefore, there is no need to install a separate cooling system for the Stirling refrigerator, simplifying the structure and reducing costs. Attached Figure Description

[0017] Figure 1 A partial structural schematic diagram of one embodiment of the refrigerator provided by this utility model;

[0018] Figure 2 A partial structural schematic diagram from another angle of one embodiment of the refrigerator provided by this utility model;

[0019] Figure 3 A schematic diagram of the structure of a Stirling refrigeration unit, which is not shown, of one embodiment of the refrigerator provided by this utility model;

[0020] Figure 4 This is a perspective view of one embodiment of the refrigerator provided by this utility model.

[0021] The symbols in the diagram represent the following meanings:

[0022] 100. Refrigerator; 10. Freezer body; 11. Compartment; 111. Freezer cavity; 1111. Storage section; 1112. Hollow section; 112. Deep cryogenic cavity; 12. Installation chamber; 121. First cavity; 122. Second cavity; 1221. First section; 1222. Second section; 13. First partition; 131. First air vent; 132. Second air vent; 14. Second partition; 141. Air outlet; 15. Third partition; 151. Air inlet; 16. Horizontal plate; 17. Fan; 18. Curved plate; 20. Freezer evaporator; 30. Stirling refrigerator; 31. Cold end air outlet. Detailed Implementation

[0023] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0024] It should be noted that when a mechanism is referred to as being "fixed to" or "set on" another mechanism, it can be directly on the other mechanism or there may be an intervening mechanism. When a mechanism is considered to be "connected to" another mechanism, it can be directly connected to the other mechanism or there may be an intervening mechanism. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0028] This utility model provides a refrigerator 100 that can provide a deep-cooled compartment 11, and uses a Stirling refrigerator 30 instead of the traditional method of stacking two refrigeration systems to reduce power consumption. It also eliminates the need to install a heat dissipation system for the Stirling refrigerator 30, thereby simplifying the structure and reducing costs.

[0029] Please see Figures 1-4The refrigerator 100 includes a freezer body 10, a freezer evaporator 20, and a Stirling refrigerator 30. The freezer body 10 includes a compartment 11 and an installation compartment 12. A first partition 13 is provided between the compartment 11 and the installation compartment 12. The compartment 11 includes a freezer cavity 111 and a cryogenic cavity 112. A first air vent 131 and a second air vent 132 are provided on the first partition 13. The freezer cavity 111 and the first air vent 131 are connected, and the cryogenic cavity 112 and the second air vent 132 are also connected. The freezer evaporator 20 is installed in the installation compartment 12 and is connected to the first air vent 131. The Stirling refrigerator 30 is installed in the installation compartment 12 and includes a cold end air outlet 31 and a hot end air outlet. The cold end air outlet 31 is connected to the second air vent 132, and the hot end air outlet faces the freezer evaporator 20.

[0030] Thus, compartment 11 serves as the front freezing space of refrigerator 100 for storage, while compartment 12 houses the refrigeration system structure of refrigerator 100. The refrigeration system of refrigerator 100 delivers cold air to compartment 11 through the first air vent 131 and the second air vent 132. The evaporator 20 and Stirling refrigerator 30 work together to lower the temperature of the cryogenic cavity 112, achieving ultra-low temperatures in the cryogenic cavity 112 through two cooling processes. Furthermore, compared to traditional compression refrigeration systems, the Stirling refrigerator 30 eliminates the need for compressors, evaporators, and condensers, and operates at lower pressures, resulting in lower energy consumption and reducing the overall energy consumption of refrigerator 100. Since the hot-end air outlet of the Stirling refrigerator 30 faces the evaporator 20, it can utilize the cooling capacity of the evaporator 20 for heat dissipation, eliminating the need for an additional refrigeration system, such as an air-cooled or water-cooled structure. This simplifies the structure of the Stirling refrigerator 30 and reduces costs.

[0031] Furthermore, a second partition 14 is provided inside the installation chamber 12, dividing the installation chamber 12 into a first cavity 121 and a second cavity 122. The refrigeration evaporator 20 is installed in the first cavity 121, and the Stirling refrigerator 30 is installed in the second cavity 122. In this way, the two do not interfere with each other during operation, and the lower temperature cold air at the Stirling refrigerator 30 operating point and the slightly higher temperature cold air at the refrigeration evaporator 20 are prevented from mixing.

[0032] Furthermore, the second partition 14 extends along the height of the refrigerator 100, and along this height, the hot-end air outlet of the Stirling refrigerator 30 is located above the cold-end air outlet 31. Thus, because the gas exiting the hot-end air outlet of the Stirling refrigerator 30 is at a higher temperature, it naturally rises, while the cooler air at the cold end flows downwards. This arrangement facilitates heat dissipation from the Stirling refrigerator 30, allowing hot air to exit from the upper hot-end air outlet and cold air to sink and exit from the cold-end air outlet 141.

[0033] The installation chamber 12 is equipped with a third partition 15. The second partition 14 and the third partition 15 are arranged parallel to each other and cooperate to form a second cavity 122. In this way, the volume of the space where the Stirling refrigerator 30 is located can be reduced, that is, the space for the supercooled gas can be reduced, thereby reducing its temperature loss.

[0034] A horizontal plate 16 is provided between the second partition 14 and the third partition 15. The two ends of the horizontal plate 16 are connected to the second partition 14 and the third partition 15 respectively, dividing the second cavity 122 into a first segment 1221 and a second segment 1222. Along the height direction of the refrigerator 100, the first segment 1221 is located above the second segment 1222, and the length of the first segment 1221 in the height direction of the refrigerator 100 is greater than the length of the second segment 1222 in the height direction of the refrigerator 100. This further reduces the volume of the space occupied by the Stirling refrigerator 30, and the horizontal plate 16 can be used to guide the gas flow.

[0035] The third partition 15 has an air inlet 151 that communicates with the external environment of the installation chamber 12. The second partition 14 has an air outlet 141 that connects the first chamber 121 and the second chamber 122. External air enters the chamber where the Stirling refrigerator 30 is located through the air inlet 151 and exchanges heat with it. The air outlet 141 is used by the Stirling refrigerator 30 to discharge hot air into the first chamber 121.

[0036] Preferably, the air outlet 141, the first air inlet 131 and the second air inlet 132 are all equipped with fans 17 to accelerate airflow and speed up the cooling cycle.

[0037] Along the width direction of the refrigerator 100, the width of the first cavity 121 is at least twice the width of the second cavity 122, and the width of the freezer cavity 111 is at least twice the width of the cryogenic cavity 112. Thus, since the demand for ultra-cold storage is relatively low, reducing the volume of the cryogenic cavity 112 allows for a larger space in the more frequently used freezer compartment, improving the practicality of the refrigerator 100. Furthermore, it reduces cold loss from the cryogenic cavity 112 and decreases its area for heat exchange with the outside.

[0038] Along the height direction of the refrigerator 100, the freezer cavity 111 includes a storage section 1111 and a hollow section 1112. The storage section 1111 is used to accommodate drawers, and the hollow section 1112 is located below the storage section 1111. The cryogenic cavity 112 is located below the storage section 1111 and is spaced apart from the hollow section 1112. Thus, the cryogenic cavity 112 is positioned relatively low, facilitating the downward flow of very low-temperature cold air into the cryogenic cavity 112.

[0039] Specifically, in this embodiment, the bottom of the first partition 13 is configured as an arc-shaped plate 18 along the height direction of the refrigerator 100. In this way, the flow of cold air can be guided, and the components in the compressor compartment of the refrigerator 100 can be avoided, providing space for the compressor and condenser connected to the freezer evaporator to be installed.

[0040] Compared to existing technologies, the refrigerator 100 provided by this utility model replaces an entire refrigeration system with a Stirling refrigerator 30, thereby reducing the need for compressors, condensers, and evaporators, thus reducing energy consumption. Furthermore, the Stirling refrigerator 30 works in conjunction with a refrigeration system to cool the deep-cold cavity 112, and the evaporator in the freezer compartment of the refrigeration system dissipates heat from the Stirling refrigerator 30. Therefore, there is no need to install a heat dissipation system for the Stirling refrigerator 30, which simplifies the structure and reduces costs.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A refrigerator characterized by comprising: include: The freezer body (10) includes a compartment (11) and an installation compartment (12). A first partition (13) is provided between the compartment (11) and the installation compartment (12). The compartment (11) includes a freezing chamber (111) and a cryogenic chamber (112). A first air vent (131) and a second air vent (132) are provided on the first partition (13). The freezing chamber (111) is connected to the first air vent (131), and the cryogenic chamber (112) is connected to the second air vent (132). A refrigeration evaporator (20) is installed in the installation chamber (12) and is connected to the first air vent (131); A Stirling refrigerator (30) is installed in the installation chamber (12). The Stirling refrigerator (30) includes a cold end air outlet (31) and a hot end air outlet. The cold end air outlet (31) is connected to the second air inlet (132), and the hot end air outlet is opened toward the refrigeration evaporator (20).

2. The refrigerator according to claim 1, characterized in that, The installation chamber (12) is provided with a second partition (14), which divides the installation chamber (12) into a first chamber (121) and a second chamber (122). The freeze evaporator (20) is installed in the first chamber (121), and the Stirling refrigerator (30) is installed in the second chamber (122).

3. The refrigerator according to claim 2, characterized in that, The second partition (14) extends along the height direction of the refrigerator, and along the height direction of the refrigerator, the hot end air outlet of the Stirling refrigerator (30) is located above the cold end air outlet (31).

4. The refrigerator according to claim 2, characterized in that, The installation chamber (12) is provided with a third partition (15), and the second partition (14) and the third partition (15) are arranged in parallel at intervals and cooperate to form the second cavity (122).

5. The refrigerator according to claim 4, characterized in that, A horizontal plate (16) is provided between the second partition (14) and the third partition (15). The two ends of the horizontal plate (16) are connected to the second partition (14) and the third partition (15) respectively, and divide the second cavity (122) into a first segment (1221) and a second segment (1222). Along the height direction of the refrigerator, the first segment (1221) is located above the second segment (1222), and the length of the first segment (1221) in the height direction of the refrigerator is greater than the length of the second segment (1222) in the height direction of the refrigerator.

6. The refrigerator according to claim 4, characterized in that, The third partition (15) has an air inlet (151) that is connected to the external environment of the installation chamber (12). The second partition (14) has an air outlet (141) that is connected to the first cavity (121) and the second cavity (122).

7. The refrigerator according to claim 6, characterized in that The air outlet (141), the first air inlet (131) and the second air inlet (132) are all equipped with fans (17).

8. The refrigerator according to claim 2, characterized in that, Along the width direction of the refrigerator, the width of the first cavity (121) is at least twice the width of the second cavity (122), and the width of the freezing cavity (111) is at least twice the width of the deep freezing cavity (112).

9. The refrigerator according to claim 1, characterized in that, Along the height direction of the refrigerator, the freezer cavity (111) includes a storage section (1111) and a hollow section (1112). The storage section (1111) is used to accommodate drawers. The hollow section (1112) is located below the storage section (1111). The deep freezer cavity (112) is located below the storage section (1111) and is spaced apart from the hollow section (1112).

10. The refrigerator according to claim 9, characterized in that, Along the height direction of the refrigerator, the bottom of the first partition (13) is set as an arc plate (18).

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