Single-system double-circulation refrigerator

Abstract

The utility model discloses a single-system double-circulation refrigerator, which comprises a refrigerator cabinet body, a refrigerating chamber, a freezing chamber, a double-system double-circulation refrigerator body and a double-system double-circulation refrigerator body, the refrigerating air duct is arranged in the refrigerator cabinet body, and the refrigerating air duct communicates with the refrigerating chamber to form a first air cooling circulation loop; the freezing air duct is arranged in the refrigerator cabinet body, and the freezing air duct communicates with the freezing chamber to form a second air cooling circulation loop; the evaporator is arranged in the freezing air duct; and the cold storage chamber is arranged in the refrigerator cabinet body and communicates with the freezing air duct, one side of the cold storage chamber is connected with one side of the cold storage air duct, and a cold guide plate is arranged at the connecting position of the side of the cold storage chamber and the side of the cold storage air duct. According to the single-system double-circulation refrigerator, it can be guaranteed that objects in the refrigerating chamber and the freezing chamber cannot be tainted by odor, refrigeration of the refrigerating chamber and the freezing chamber can be completed only through one evaporator, compared with an existing double-evaporator refrigerator, the single-system double-circulation refrigerator is easier to install and higher in sealing performance, and the production efficiency of the refrigerator can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to a single-system double-circulation refrigerator. Background Art

[0002] The refrigerator compartment and freezer compartment of a dual-circulation refrigerator each have independent air ducts to prevent the food in the refrigerator compartment and the freezer from smelling different. The existing dual-circulation refrigerator installs an evaporator and a fan motor in the air ducts of the refrigerator compartment and the freezer compartment respectively to maintain the cooling effect of the refrigerator compartment and the freezer compartment, and a connecting structure (such as a tee, a solenoid valve and a capillary tube, etc.) is provided between the two evaporators; however, in order to ensure that the refrigerant does not leak when flowing between the two evaporators, each connection between the two evaporators needs to be sealed, so that the two evaporators need to be welded to each other with the middle connecting structure during installation. The high difficulty of welding operation causes inconvenience during installation, thereby affecting the production efficiency of the refrigerator.

[0003] Therefore existing technology still needs to be improved and improved. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a single-system dual-circulation refrigerator, aiming to solve the problem in the prior art that the two evaporators in the dual-circulation refrigerator need to be welded to the connecting structure between the two during installation, and the high difficulty of welding operation causes inconvenience during installation, thereby affecting the production efficiency of the refrigerator.

[0005] The technical solutions adopted by the present invention to solve the technical problems are as follows:

[0006] In a first aspect, an embodiment of the present invention provides a single-system dual-circulation refrigerator, comprising:

[0007] A refrigerator cabinet, comprising a refrigeration compartment and a freezer compartment;

[0008] a refrigeration air duct, the refrigeration air duct being arranged in the refrigerator cabinet, the refrigeration air duct being connected to the refrigeration chamber and forming a first air-cooling circulation loop;

[0009] a freezing air duct, the freezing air duct being arranged in the refrigerator cabinet, the freezing air duct being connected to the freezing chamber and forming a second air cooling circulation loop;

[0010] an evaporator, the evaporator being arranged in the refrigeration air duct;

[0011] A cold storage chamber is arranged in the refrigerator cabinet and is communicated with the freezing air duct. One side of the cold storage chamber is connected to one side of the refrigeration air duct and a cold conduction plate is provided at the connection.

[0012] As a further improved technical solution, the refrigeration air duct is close to the back side of the refrigeration chamber, and a refrigeration air outlet and a refrigeration return air outlet are provided on the back side of the refrigeration chamber. The refrigeration air outlet and the refrigeration return air outlet are respectively connected to the refrigeration air duct.

[0013] As a further improved technical solution, the refrigerated air outlet is located at the top of the back side of the refrigerated chamber, and the refrigerated air return outlet is located at the bottom of the back side of the refrigerated chamber.

[0014] As a further improved technical solution, a first fan is provided in the refrigerated air outlet, and the air outlet side of the first fan faces the interior of the refrigerated compartment.

[0015] As a further improved technical solution, the freezing air duct is close to the back side of the freezing chamber, and a freezing air outlet and a freezing air return outlet are provided on the back side of the freezing chamber. The freezing air outlet and the freezing air return outlet are respectively connected to the freezing air duct.

[0016] As a further improved technical solution, the refrigerated air outlet is located at the top of the back side of the freezing chamber, and the refrigerated air return outlet is located at the bottom of the back side of the freezing chamber.

[0017] As a further improved technical solution, a second fan is provided in the freezing air outlet, and the air outlet side of the second fan faces the interior of the freezing chamber.

[0018] As a further improved technical solution, the cold storage chamber is arranged on a side of the refrigeration air duct away from the refrigeration chamber, and two ports at the bottom of the cold storage chamber are respectively connected to the freezing air duct.

[0019] As a further improved technical solution, a return air grille is provided in the refrigerated return air vent.

[0020] As a further improved technical solution, the cooling plate includes either an aluminum plate or a copper plate.

[0021] Compared with the prior art, the embodiment of the present invention has the following advantages:

[0022] An embodiment of the present invention provides a single-system dual-circulation refrigerator, comprising: a refrigerator cabinet, the refrigerator cabinet comprising a refrigerating chamber and a freezing chamber; a refrigerating air duct, the refrigerating air duct being arranged in the refrigerator cabinet, the refrigerating air duct being communicated with the refrigerating chamber and forming a first air-cooling circulation loop; a freezing air duct, the freezing air duct being arranged in the refrigerator cabinet, the freezing air duct being communicated with the freezing chamber and forming a second air-cooling circulation loop; an evaporator, the evaporator being arranged in the freezing air duct; a cold storage chamber, the cold storage chamber being arranged in the refrigerator cabinet and communicating with the freezing air duct, one side of the cold storage chamber being connected to one side of the refrigerating air duct and a cold conduction plate being provided at the connection. In the present invention, the cold air produced by the evaporator can flow into the cold storage chamber through the freezing air duct, and the cold air in the cold storage chamber transfers coldness to the air in the refrigeration duct through the cold conduction plate. After the air in the refrigeration duct completes the cold transfer through the cold conduction plate, the formed cold air can flow through the refrigeration chamber through the first air-cooling circulation loop, thereby completing the refrigeration of the refrigeration chamber; and the cold air in the freezing air duct can also flow through the freezer chamber to complete the refrigeration of the freezer chamber. That is, the single-system dual-circulation refrigerator provided by the present invention can not only ensure that the items in the refrigerator and the freezer chamber will not be mixed with each other, but also only requires one evaporator to complete the refrigeration of the refrigerator and the freezer chamber. Compared with the existing dual-evaporator refrigerator, it is easier to install and has higher sealing performance, which can improve the production efficiency of the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic side cross-sectional view of the structure of a single-system dual-circulation refrigerator provided by the present invention;

[0024] Figure 2 This is a schematic diagram of the front internal structure of a single-system dual-circulation refrigerator provided by the present invention;

[0025] Figure 3 This is a schematic diagram of the back internal structure of a single-system dual-circulation refrigerator provided by the present invention;

[0026] Figure 4 This is a schematic structural diagram of the back plate of the refrigeration compartment in the present invention;

[0027] Figure 5 for Figure 4 A is an enlarged schematic diagram.

[0028] In the figure: 1. Refrigerator cabinet; 2. Refrigerator compartment; 201. Refrigerator air outlet; 202. Refrigerator return air outlet; 3. Freezer compartment; 301. Refrigerator air outlet; 302. Refrigerator return air outlet; 4. Refrigerator air duct; 5. Refrigerator air duct; 6. Evaporator; 7. Cold storage compartment; 8. Cold guide plate; 9. First fan; 10. Second fan; 11. Return air grille; 12. Air guide plate. DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0030] In conventional dual-circulation refrigerators, the refrigerator and freezer compartments each have independent air ducts to prevent food from odor transfer between the two compartments. Existing dual-circulation refrigerators install an evaporator and fan motor in each duct to maintain the cooling effect of the refrigerator and freezer compartments. A connecting structure (such as a tee, solenoid valve, and capillary tube) is provided between the two evaporators. However, to prevent refrigerant from leaking between the two evaporators, each connection between the two evaporators must be sealed. Consequently, the two evaporators must be welded to the intermediate connecting structure during installation. This welding operation is difficult, causing inconvenience during installation and thus affecting the refrigerator's production efficiency. Therefore, the present invention provides the following embodiments to address the aforementioned technical issues.

[0031] Example:

[0032] like Figure 1-Figure 5 The single-system dual-circulation refrigerator includes: a refrigerator cabinet 1, which includes a refrigerator compartment 2 and a freezer compartment 3; a refrigeration duct 4, which is arranged in the refrigerator cabinet 1 and communicates with the refrigerator compartment 2 to form a first air-cooling circulation loop; a freezing duct 5, which is arranged in the refrigerator cabinet 1 and communicates with the freezer compartment 3 to form a second air-cooling circulation loop; an evaporator 6, which is arranged in the freezing duct 5; and a cold storage chamber 7, which is arranged in the refrigerator cabinet 1 and communicates with the freezing duct 5. One side of the cold storage chamber 7 is connected to one side of the refrigeration duct 4, and a cold guide plate 8 is provided at the connection.

[0033] like Figure 1 and Figure 2As shown, in this embodiment, the single-system dual-circulation refrigerator includes a refrigerator cabinet 1 and a refrigerating chamber 2 arranged in the refrigerator cabinet 1, a freezing chamber 3 arranged in the refrigerator cabinet 1, a refrigerating air duct 4 arranged in the refrigerator cabinet 1, a freezing air duct 5 arranged in the refrigerator cabinet 1, an evaporator 6 arranged in the refrigerator cabinet 1, a cold storage chamber 7 arranged in the refrigerator cabinet 1 and a cold conduction plate 8 arranged in the refrigerator cabinet 1; wherein the refrigerating air duct 4 is connected to the refrigerating chamber 2 and a first air-cooling circulation loop is formed between the two, and the first air-cooling circulation loop is The cold air flow route for cooling the refrigerating chamber 2 is used. The cold air in the refrigerating air duct 4 will circulate in the refrigerating air duct 4 and the refrigerating chamber 2 to cool the refrigerating chamber 2; the freezing air duct 5 is connected to the freezing chamber 3 and a second air-cooling circulation loop is formed therebetween. The second air-cooling circulation loop is the cold air flow route for cooling the freezing chamber 3. The cold air in the freezing air duct 5 will circulate in the freezing air duct 5 and the freezing chamber 3 to cool the freezing chamber 3; at the same time, the cold storage chamber 7 is connected to the freezing air duct 5. The cold air produced by the evaporator 6 arranged inside not only flows directly into the freezing chamber 3, but also flows into the cold storage chamber 7. One side of the cold storage chamber 7 is connected to one side of the refrigeration duct 4 and the cold conduction plate 8 is provided at the connection. The cold air in the cold storage chamber 7 comes from the freezing duct 5, so the temperature is relatively low, and the required cold air temperature in the refrigeration chamber 2 is slightly higher than that in the freezing chamber 3. Therefore, the cold air temperature in the refrigeration duct 4 can be controlled by the cold conduction plate 8, so that the cold air temperature in the refrigeration duct 4 is higher than that in the cold storage chamber 7. Because the cold conduction plate 8 will lose some cold air in the process of transferring cold air, the refrigeration duct The air temperature in the duct 4 will inevitably be lower than the temperature of the cold storage chamber 7. For example, the cold air temperature in the cold storage chamber 7 is 0°C. After the cold energy is transferred through the cold conduction plate 8, the cold air temperature formed in the refrigerated air duct 4 is 5°C. Furthermore, in this embodiment, in order to reduce the loss of cold energy transferred from the cold storage chamber 7 to the refrigerated air duct 4, the cold conduction plate 8 is a side plate shared by the cold storage chamber 7 and the refrigerated air duct 4, and the area of ​​the cold conduction plate 8 is consistent with the size of the common surface of the cold storage chamber 7 and the refrigerated air duct 4, thereby accelerating the efficiency of cold energy transfer between the cold storage chamber 7 and the refrigerated air duct 4.The refrigerated air in the refrigerator 2 is then passed through the first air cooling duct 5 and then through the second air cooling duct 5 to the refrigerator 2, so that the refrigeration of the refrigerator 2 is completed.

[0034] As a further solution, the refrigerated air duct 4 is close to the back side of the refrigerated chamber 2, and a refrigerated air outlet 201 and a refrigerated air return outlet 202 are provided on the back side of the refrigerated chamber 2. The refrigerated air outlet 201 and the refrigerated return air outlet 202 are respectively connected to the refrigerated air duct 4. Specifically, the cold air from the refrigerated air duct 4 will flow into the refrigerated chamber 2 through the refrigerated air outlet 201. When the cold air flowing into the refrigerated chamber 2 flows through the refrigerated chamber 2, it will transfer cold air with the air in the refrigerated chamber 2. After the cold transfer is completed, the cold air will heat up and can no longer maintain the refrigeration effect. Finally, part of the air in the refrigerated chamber 2 will flow back to the refrigerated air duct 4 through the refrigerated return air inlet 202 to continue to absorb the cold transferred from the cold storage chamber 7 and the cold conduction plate 8. After absorbing the cold, new cold air is formed and flows into the refrigerated chamber 2 through the refrigerated air outlet 201 for refrigeration, thereby completing an air cooling cycle. In this embodiment, the refrigerated air duct 4 is close to the back plate of the refrigerated chamber 2, and the refrigerated air duct 4 is arranged on the side of the back plate of the refrigerated chamber 2 away from the opening of the refrigerated chamber 2. Figure 1 As shown, the refrigeration duct 4 is located on the left side of the back panel of the refrigeration chamber 2. The refrigeration duct 4 is adjacent to the refrigeration chamber 2 to shorten the path distance of the first air-cooling circulation loop, so that the cold air in the refrigeration duct 4 and the cold air in the refrigeration chamber 2 can quickly complete the circulation, thereby maintaining the required temperature of the refrigeration chamber 2 and ensuring the preservation effect of food.

[0035] As a further solution, the refrigerated air outlet 201 is located at the top of the back side of the refrigerating chamber 2, and the refrigerated return air outlet 202 is located at the bottom of the back side of the refrigerating chamber 2. Specifically, the refrigerated air outlet 201 is set at the top of the back plate of the refrigerating chamber 2, and the refrigerated return air outlet 202 is set at the bottom of the back plate of the refrigerating chamber 2. Since the cold air gradually sinks, the cold air in the refrigerated air duct 4 flows into the refrigerating chamber 2 through the refrigerated air outlet 201 located at the top of the back plate of the refrigerating chamber 2 in order to achieve a better refrigeration effect. This can improve the efficiency of cold transfer between the air in the refrigerating chamber 2 and the cold air, and can ensure that the top space in the refrigerating chamber 2 also has a good refrigeration effect. If the refrigerated air outlet 201 is located at the bottom of the back plate of the refrigerating chamber 2, the refrigeration effect of the top space in the refrigerating chamber 2 will be worse than that of the bottom space, which is not conducive to the preservation of food.

[0036] In this embodiment, a first fan 9 is provided in the refrigerated air outlet 201, with the air outlet side of the first fan 9 facing the interior of the refrigerated chamber 2. Specifically, the first fan 9 provided in the refrigerated air outlet 201 is used to assist the refrigerated air duct 4 and the refrigerated chamber 2 in quickly completing the air cooling cycle, thereby accelerating the cooling effect of the refrigerated chamber 2.

[0037] As a further solution, the freezing air duct 5 is close to the back side of the freezing chamber 3, and a freezing air outlet 301 and a freezing air return outlet 302 are provided on the back side of the freezing chamber 3. The freezing air outlet 301 and the freezing air return outlet 302 are respectively connected to the freezing air duct 5. Specifically, the cold air from the freezing duct 5 will flow into the freezing chamber 3 through the freezing air outlet 301. When the cold air flowing into the freezing chamber 3 flows through the freezing chamber 3, it will transfer cold air with the air in the freezing chamber 3. After the cold transfer is completed, the cold air will heat up and thus the cooling effect will be weakened. Finally, part of the air in the freezing chamber 3 will flow back to the freezing duct 5 through the freezing return air outlet 302 to continue to absorb the cold energy emitted from the evaporator 6. After absorbing the cold energy, new cold air is formed and then flows into the freezing chamber 3 through the freezing air outlet 301 for cooling, thereby completing an air cooling cycle. In this embodiment, the cold air duct is close to the back plate of the freezing chamber 3, and the freezing air duct 5 is arranged on the side of the back plate of the freezing chamber 3 away from the opening of the freezing chamber 3. Figure 1 As shown, the freezing air duct 5 is located on the left side of the back plate of the freezing chamber 3. The freezing air duct 5 is adjacent to the freezing chamber 3 to shorten the path distance of the first air-cooling circulation loop, so that the cold air in the freezing air duct 5 and the cold air in the freezing chamber 3 can quickly complete the circulation, thereby maintaining the required temperature of the freezing chamber 3 and ensuring the freezing effect on the food.

[0038] As a further solution, the freezing air outlet 301 is located at the top of the back side of the freezing chamber 3, and the freezing return air outlet 302 is located at the bottom of the back side of the freezing chamber 3. Specifically, the freezing air outlet 301 is set at the top of the back plate of the freezing chamber 3, and the freezing return air outlet 302 is set at the bottom of the back plate of the freezing chamber 3. Since the cold air gradually sinks, the cold air in the freezing air duct 5 flows into the freezing chamber 3 through the freezing air outlet 301 located at the top of the back plate of the freezing chamber 3 in order to achieve a better cooling effect. This can improve the efficiency of cold transfer between the air in the freezing chamber 3 and the cold air, and can ensure that the top space in the freezing chamber 3 also has a good cooling effect. If the freezing air outlet 301 is located at the bottom of the back plate of the freezing chamber 3, the cooling effect of the top space in the freezing chamber 3 will be worse than that of the bottom space, which is not conducive to freezing food. At the same time, the freezing chamber 3 in this embodiment can also be provided with a plurality of freezing air outlets 301, for example Figure 2 There are six freezing air outlets 301, which are divided into two vertical rows and arranged vertically on the back plate of the freezing chamber 3. By setting up multiple freezing air outlets 301 to improve the refrigeration effect, it is ensured that the freezing chamber 3 can keep the food frozen.

[0039] In this embodiment, a second fan 10 is provided within the freezing air outlet 301, with the air outlet side of the second fan 10 facing the interior of the freezer compartment 3. Specifically, the second fan 10 provided in the freezing air outlet 301 is used to assist the freezing air duct 5 and the freezer compartment 3 in quickly completing the air cooling cycle, thereby accelerating the cooling effect of the freezer compartment 3. Furthermore, when there are multiple freezing air outlets 301, multiple second fans 10 can also be provided, one at each freezing air outlet 301, i.e., each second fan 10 corresponds to each freezing air outlet 301, thereby achieving a uniform cooling effect throughout the freezer compartment.

[0040] like Figure 3 As shown in FIG. 1 , as a further solution, the cold storage chamber 7 is provided on the side of the refrigeration air duct 4 away from the refrigeration chamber 2, and the two ports at the bottom of the cold storage chamber 7 are respectively connected to the freezing air duct 5. Specifically, the cold air in the cold storage chamber 7 and the cold air in the freezing air duct 5 can circulate, as shown in FIG. Figure 3In the embodiment, the cold air in the freezing duct 5 enters the cold storage chamber 7 from the opening on the left side of the bottom of the cold storage chamber 7, then flows through the cold conduction plate 8, and then continues to flow to the opening on the right side of the bottom of the cold storage chamber 7, and flows back to the freezing duct 5 from the opening on the right side of the bottom of the cold storage chamber 7, thereby completing a cycle. The cold air in the freezing duct 5 is transferred to the refrigerating chamber 2 for refrigeration and preservation through the combination of the cold storage chamber 7 and the cold conduction plate 8. Compared with the dual-evaporator 6 dual-circulation refrigerator in the prior art, one evaporator 6 can be saved, thereby saving installation time and production cost, and at the same time, the sealing performance of the refrigerant during flow can be enhanced.

[0041] like Figure 4 As shown, as a further solution, a return air grille 11 is provided in the refrigeration return air inlet 202. The return air grille 11 provided at the refrigeration return air inlet 202 can prevent foreign matter in the refrigeration chamber 2 from entering the refrigeration air duct 4, thereby protecting the refrigeration air duct 4 and preventing foreign matter from accumulating in the refrigeration air duct 4 and causing blockage over time, thereby affecting the refrigeration effect. Figure 5 As shown, the return air grille 11 is provided with a plurality of air guide plates 12 arranged in an array. Each of the air guide plates 12 is tilted so that the air outlet of the return air grille 11 faces downward. Specifically, the return air grille 11 is provided with a plurality of rectangular air guide plates 12. The air guide plates 12 are small in size and are tilted vertically. The top of each air guide plate 12 is close to the back side of the refrigerator cabinet 1, and the bottom of each air guide plate 12 is close to the front side of the refrigerator cabinet 1. This allows the air outlet of the return air grille 11 to face downward, thereby enhancing the return air grille 11's ability to block foreign matter while not affecting the return flow of air in the refrigerator compartment 2 to the refrigeration air duct 4.

[0042] As a further solution, the cold conduction plate 8 includes any one of an aluminum plate or a copper plate. Specifically, the cold conduction plate 8 can be any metal plate. In this embodiment, the cold conduction plate 8 is an aluminum plate because it is light and low in cost, has good cooling performance, and has a higher overall cost performance.

[0043] In summary, the embodiment of the present invention provides a single-system dual-circulation refrigerator, comprising: a refrigerator cabinet 1, the refrigerator cabinet 1 including a refrigerating chamber 2 and a freezing chamber 3; a refrigerating air duct 4, the refrigerating air duct 4 is arranged in the refrigerator cabinet 1, the refrigerating air duct 4 is connected with the refrigerating chamber 2 and forms a first air-cooling circulation loop; a freezing air duct 5, the freezing air duct 5 is arranged in the refrigerator cabinet 1, the freezing air duct 5 is connected with the freezing chamber 3 and forms a second air-cooling circulation loop; an evaporator 6, the evaporator 6 is arranged in the freezing air duct 5; a cold storage chamber 7, the cold storage chamber 7 is arranged in the refrigerator cabinet 1 and is connected with the freezing air duct 5, one side of the cold storage chamber 7 is connected to one side of the refrigerating air duct 4 and a cold conduction plate 8 is provided at the connection. The refrigerated air in the refrigerator 2 is then passed through the first air cooling duct 5 and then through the second air cooling duct 5 to the refrigerator 2, so that the refrigeration of the refrigerator 2 is completed.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0045] 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0046] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0047] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0048] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0049] Of course, the description of the above embodiments of the present invention is relatively detailed, but it cannot be understood as limiting the scope of protection of the present invention. The present invention can also have many other implementation methods. Based on this implementation method, other implementation methods obtained by ordinary technicians in this field without making any creative work are all within the scope of protection of the present invention. The scope of protection of the present invention shall be based on the attached claims.

Claims

1. A single-system double-circulation refrigerator, characterized in that: include: A refrigerator cabinet, comprising a refrigeration compartment and a freezer compartment; a refrigeration air duct, the refrigeration air duct being arranged in the refrigerator cabinet, the refrigeration air duct being connected to the refrigeration chamber and forming a first air-cooling circulation loop; a freezing air duct, the freezing air duct being arranged in the refrigerator cabinet, the freezing air duct being connected to the freezing chamber and forming a second air cooling circulation loop; an evaporator, the evaporator being arranged in the refrigeration air duct; A cold storage chamber is arranged in the refrigerator cabinet and is communicated with the freezing air duct. One side of the cold storage chamber is connected to one side of the refrigeration air duct and a cold conduction plate is provided at the connection.

2. The single-system dual-circulation refrigerator according to claim 1, characterized in that: The refrigeration air duct is close to the back side of the refrigeration chamber. A refrigeration air outlet and a refrigeration air return outlet are provided on the back side of the refrigeration chamber. The refrigeration air outlet and the refrigeration air return outlet are respectively communicated with the refrigeration air duct.

3. The single-system dual-circulation refrigerator according to claim 2, characterized in that: The refrigerated air outlet is located at the top of the back side of the refrigerated chamber, and the refrigerated air return outlet is located at the bottom of the back side of the refrigerated chamber.

4. The single-system dual-circulation refrigerator according to claim 3, characterized in that: A first fan is provided in the refrigeration air outlet, and an air outlet side of the first fan faces the interior of the refrigeration chamber.

5. The single-system dual-circulation refrigerator according to claim 1, characterized in that: The freezing air duct is close to the back side of the freezing chamber. A freezing air outlet and a freezing air return outlet are provided on the back side of the freezing chamber. The freezing air outlet and the freezing air return outlet are respectively communicated with the freezing air duct.

6. The single-system dual-circulation refrigerator according to claim 5, characterized in that: The freezing air outlet is located at the top of the back side of the freezing chamber, and the freezing air return outlet is located at the bottom of the back side of the freezing chamber.

7. The single-system dual-circulation refrigerator according to claim 6, characterized in that: A second fan is provided in the freezing air outlet, and an air outlet side of the second fan faces the interior of the freezing chamber.

8. The single-system dual-circulation refrigerator according to claim 2, characterized in that: The cold storage chamber is arranged on a side of the refrigeration air duct away from the refrigeration chamber, and two ports at the bottom of the cold storage chamber are respectively communicated with the freezing air duct.

9. The single-system dual-circulation refrigerator according to claim 2, characterized in that: A return air grille is provided in the refrigeration return air port.

10. The single-system dual-circulation refrigerator according to claim 1, characterized in that: The cooling plate includes an aluminum plate or a copper plate.

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