Refrigerator

Abstract

The invention provides a refrigerator which comprises a refrigerator body, and a first chamber and a second chamber are formed in the refrigerator body. The first evaporator is used for refrigerating the first chamber; the second evaporator is used for refrigerating the second chamber; a first air supply passage is arranged between the mixing cavity and the first evaporator, a third air supply passage is arranged between the second evaporator and the mixing cavity, and a second air supply passage is arranged between the mixing cavity and the first chamber; the first evaporator and the second evaporator can controllably convey cooling capacity to the mixing cavity. Therefore, during the shutdown period of the compressor, the first chamber can be refrigerated by utilizing the first evaporator, the first chamber can also be refrigerated by utilizing the second evaporator, and the temperature of cold air sent to the first chamber can be more appropriate by utilizing the mixing of the two air flows, so that the storage effect of the first chamber is ensured, and the starting frequency of the compressor is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of refrigeration, and in particular to a refrigerator. Background Art

[0002] Refrigerators are a common household appliance that can store food at low temperatures, thereby extending the shelf life of food. At present, in order to further improve the user experience, some refrigerators have begun to set up more and more fresh-keeping modes. The new fresh-keeping modes are mainly to maintain food in a specific temperature range to improve the preservation effect. For example, one of them is a low-temperature refrigeration mode that maintains food in a supercooled state.

[0003] However, the new preservation mode has strict requirements on temperature. Too high or too low temperature can easily reduce the preservation effect. In addition, the storage temperature requirement is generally lower than that of ordinary refrigeration, but higher than that of freezing. This leads to an increase in the start and stop conditions of the compressor, which increases the start and stop frequency of the compressor, which is not conducive to the use of the compressor. Summary of the invention

[0004] An object of the present invention is to provide a refrigerator that can solve any of the above problems.

[0005] A further object of the present invention is to improve the mixing efficiency of the airflow in the mixing chamber.

[0006] In particular, the present invention provides a refrigerator comprising:

[0007] A box body, wherein the box body is formed with a first chamber and a second chamber;

[0008] a first evaporator, the first evaporator being used to cool the first chamber;

[0009] A mixing chamber, wherein a first air supply passage is provided between the mixing chamber and the first evaporator, and a second air supply passage is provided between the mixing chamber and the first chamber, so that the cooling capacity of the first evaporator is transported to the mixing chamber via the first air supply passage, and then transported to the first chamber via the second air supply passage, so as to cool the first chamber;

[0010] a second evaporator, the second evaporator being used to cool the second chamber, and a third air supply passage being provided between the second evaporator and the mixing chamber, so as to transport the cooling capacity of the second evaporator to the mixing chamber via the third air supply passage;

[0011] The first evaporator and the second evaporator are both capable of controllably delivering cold energy to the mixing chamber.

[0012] Optionally, the first chamber is provided with a return air passage, and the return air passage is respectively connected to the first evaporator and the second evaporator through a three-way valve, a fan is provided between the three-way valve and the first chamber, and the three-way valve is located at the air outlet end of the fan, so as to control the first evaporator to transport cold energy to the mixing chamber by controlling the direction of the three-way valve and the start and stop of the fan, and control the second evaporator to transport cold energy to the mixing chamber.

[0013] Optionally, a first fan is provided between the first evaporator and the mixing chamber, so as to control the first evaporator to deliver cold energy to the mixing chamber by controlling the start and stop of the first fan;

[0014] A second fan is provided between the second evaporator and the mixing chamber, so as to control the second evaporator to transport cold air to the mixing chamber by controlling the start and stop of the second fan.

[0015] Optionally, the air supply volume of the second fan is greater than the air supply volume of the first fan.

[0016] Optionally, the first air supply passage has a tapered section that gradually contracts from the first evaporator to the mixing chamber; or, the third air supply passage has a tapered section that gradually contracts from the second evaporator to the mixing chamber.

[0017] Optionally, the refrigerator is provided with a magnetic field generating device, and the magnetic field generating device is used to generate a magnetic field in the first chamber to apply a magnetic field to food placed in the first chamber.

[0018] Optionally, the mixing chamber has a first air inlet, a second air inlet and an air outlet, the first air inlet is connected to the first air supply passage to supply air to the mixing chamber via the first air supply passage and the first air inlet, the second air inlet is connected to the third air supply passage to supply air to the mixing chamber via the third air supply passage and the second air inlet, the air outlet is connected to the second air supply passage to supply air to the second chamber via the air outlet and the second air supply passage, the mixing chamber is square, the first air inlet and the air outlet are respectively located on two side walls connected to the mixing chamber, and the second air inlet and the air outlet are respectively located on two side walls connected to the mixing chamber.

[0019] Optionally, the distance between the center point of the first air inlet and the center point of the air outlet in the length direction of the mixing chamber is greater than or equal to one half of the length of the mixing chamber, and the distance between the center point of the second air inlet and the center point of the air outlet in the length direction of the mixing chamber is greater than or equal to one half of the length of the mixing chamber.

[0020] Optionally, the first air inlet and the second air inlet are arranged opposite to each other; or, the first air inlet and the second air inlet are respectively located on two side walls connected to the mixing chamber, and the center lines of the first air inlet and the second air inlet intersect.

[0021] Optionally, an area of ​​the first air inlet is larger than an area of ​​the air outlet, and an area of ​​the second air inlet is larger than an area of ​​the air outlet.

[0022] The refrigerator of the present invention is provided with a mixing chamber in the refrigerator, the first evaporator is connected to the mixing chamber via the first air supply passage, the second evaporator is connected to the mixing chamber via the third air supply passage, and the mixing chamber is connected to the first chamber via the second air supply passage, so that the first chamber can receive cold air from the first evaporator, cold air from the second evaporator, and mixed airflow from the first evaporator and the second evaporator. After the compressor stops working, the evaporator still has residual cold capacity. Therefore, during the shutdown of the compressor, the first chamber can be cooled by the residual cold capacity of the first evaporator or the residual cold capacity of the second evaporator. Moreover, because the storage temperature of the second chamber is very low and the second evaporator is particularly cold, the first chamber can be cooled for a longer time after the compressor is stopped. On the other hand, the two airflows can be mixed when the temperature of the second evaporator is particularly low, so that the temperature of the cold air sent to the first chamber is more suitable. By enabling both evaporators to individually and controllably deliver airflow to the first chamber, it is helpful to maintain the first chamber at a suitable temperature for a long time during the compressor shutdown period, and it is also possible to avoid the cold air temperature delivered to the first chamber by the evaporator with a particularly low temperature being too low, thereby effectively reducing the compressor startup frequency on the basis of ensuring the storage effect of the first chamber.

[0023] Furthermore, the refrigerator of the present invention is provided with a first air supply passage having a tapering section that gradually contracts from the first evaporator to the mixing chamber, and a third air supply passage having a tapering section that gradually contracts from the second evaporator to the mixing chamber, so that the airflow can be accelerated in the process of flowing from the first evaporator to the mixing chamber along the first air supply passage, and the airflow can be accelerated in the process of flowing from the second evaporator to the mixing chamber along the third air supply passage, thereby making the airflow flowing from the first evaporator and the second evaporator into the mixing chamber have greater kinetic energy. On the one hand, it is ensured that the power of the airflow flowing from the mixing chamber to the first chamber is sufficient. On the other hand, when the two airflows need to be mixed in the mixing chamber, the increase in the kinetic energy of the airflow helps to improve the mixing effect, thereby improving the mixing efficiency.

[0024] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0026] Figure 1 is a schematic diagram of a refrigerator according to an embodiment of the present invention;

[0027] Figure 2 is a simplified schematic diagram of a partial structure of a refrigerator according to an embodiment of the present invention;

[0028] Figure 3 is a schematic diagram of a mixing chamber of a refrigerator according to an embodiment of the present invention;

[0029] Figure 4 is a schematic diagram of a refrigerator according to another embodiment of the present invention;

[0030] Figure 5 FIG. 2 is a simplified schematic diagram of a partial structure of a refrigerator according to another embodiment of the present invention. DETAILED DESCRIPTION

[0031] It should be understood by those skilled in the art that the embodiments described below are only some embodiments of the present invention, rather than all embodiments of the present invention, and these embodiments are intended to explain the technical principles of the present invention, rather than to limit the protection scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should still fall within the protection scope of the present invention.

[0032] 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" and the like 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, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] Furthermore, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] like Figure 1 and Figure 2 As shown, in one embodiment, the refrigerator includes a housing 100, a first evaporator 200, a second evaporator 300 and a mixing chamber 400. The housing 100 is formed with a first compartment 101 and a second compartment 102. The first evaporator 200 is used to refrigerate the first compartment 101. A first air supply passage 103 is provided between the mixing chamber 400 and the first evaporator 200, and a second air supply passage 104 is provided between the mixing chamber 400 and the first compartment 101, so as to transport the coldness of the first evaporator 200 to the mixing chamber 400 via the first air supply passage 103, and then transport it to the first compartment 101 via the second air supply passage 104, so as to refrigerate the first compartment 101. The second evaporator 300 is used to refrigerate the second compartment 102, and a third air supply passage 105 is provided between the second evaporator 300 and the mixing chamber 400, so as to transport the coldness of the second evaporator 300 to the mixing chamber 400 via the third air supply passage 105. Both the first evaporator 200 and the second evaporator 300 can controllably deliver cold energy to the mixing chamber 400 .

[0035] Reference Figure 1 and Figure 2 As shown, specifically, a magnetic field generating device 500 is provided in the first chamber 101, and the magnetic field generating device 500 generates a magnetic field in the first chamber 101 to apply a magnetic field to the food in the first chamber 101. That is, the first chamber 101 is a magnetic field storage chamber. Among them, the magnetic field generating device 500 is a permanent magnet or an electromagnetic coil, or a structure composed of a permanent magnet and an electromagnetic coil. The magnetic field generating device 500 is arranged on the bottom wall of the first chamber 101 for easy fixation. After the food is applied with a magnetic field, it can be in a supercooled state without freezing at sub-zero temperatures, thereby improving the preservation effect. The second chamber 102 is a freezing chamber or a variable temperature chamber, that is, the second chamber 102 has a lower storage temperature than the first chamber 101.

[0036] It should be noted that the refrigerator may be provided with other compartments in addition to the first compartment and the second compartment. In addition, the refrigerator may have a larger refrigeration compartment, and the first compartment, i.e., the magnetic field storage compartment, is provided in the refrigeration compartment. For the refrigerator of the present application, those skilled in the art may configure the specific number, function, and layout of the compartments according to the requirements.

[0037] In addition, it should be noted that, in some other embodiments, the magnetic field generating device may also be disposed outside the first chamber.

[0038] It should be noted that, in some other embodiments, the first chamber may also be other preservation modes that require the storage temperature to be maintained in a temperature range that is lower than that of refrigeration but higher than that of freezing.

[0039] Continue to refer to Figure 1 and Figure 2 As shown, the first evaporator 200 is disposed in a chamber, and the chamber where the first evaporator 200 is located is connected to the mixing chamber 400 through the first air supply passage 103. The first evaporator 200 can release cold energy into the chamber where it is located, so that the chamber where it is located forms a low-temperature environment. The cold energy generated by the first evaporator 200 enters the mixing chamber 400 along the first air supply passage 103 in the form of cold air, and then flows from the mixing chamber 400 to the second air supply passage 104, and then flows into the first chamber 101 along the second air supply passage 104, thereby cooling the first chamber 101.

[0040] Furthermore, the second evaporator 300 is also disposed in a chamber, and the second evaporator 300 can release cold energy into the chamber where it is located. Although not shown in the figure, the chamber where the second evaporator 300 is located is connected to the second chamber 102 via an air path, and the cold energy generated by the second evaporator 300 is sent to the second chamber 102 in the form of cold air to cool the second chamber 102. The chamber where the second evaporator 300 is located is connected to the mixing chamber 400 through the third air supply passage 105. Therefore, the cold energy of the second evaporator 300 can enter the mixing chamber 400 along the third air supply passage 103 in the form of cold air, and then flow from the mixing chamber 400 to the second air supply passage 104, and then flow into the first chamber 101 along the second air supply passage 104, thereby cooling the first chamber 101.

[0041] In addition, both the first evaporator 200 and the second evaporator 300 can controllably deliver cold air to the mixing chamber 400. That is, the mixing chamber 400 can receive cold air from the first evaporator 200 alone, can also receive cold air from the second evaporator 300 alone, and can also receive cold air from the first evaporator 200 and the second evaporator 300 at the same time, so that the cold air from the first evaporator 200 and the second evaporator 300 are mixed in the mixing chamber 400.

[0042] Reference Figure 1 and Figure 2 As shown, specifically, the first chamber 101 is provided with a return air passage, which is respectively connected to the first evaporator 200 and the second evaporator 300 through a three-way valve 600, and a fan 700 is provided between the three-way valve 600 and the first chamber 101. The three-way valve 600 is located at the air outlet end of the fan 700, so as to control the first evaporator 200 to deliver cold energy to the mixing chamber 400 by controlling the direction of the three-way valve 600 and the start and stop of the fan 700, and to control the second evaporator 300 to deliver cold energy to the mixing chamber 400.

[0043] Specifically, the return air passage has two branches leading to the first evaporator 200 and the second evaporator 300 respectively, and the three-way valve 600 is arranged at the branch. The three-way valve 600 can lead to the first evaporator 200 alone, the second evaporator 300 alone, or the first evaporator 200 and the second evaporator 300 at the same time. When the three-way valve 600 leads to the first evaporator 200 alone, the fan 700 is started to form a flowing cold air, and the cold air enters the mixing chamber 400 along the first air supply passage 103 from the first evaporator 200, and then enters the first chamber 101 along the second air supply passage 104 from the mixing chamber 400, and then flows from the first chamber 101 along the return air passage to the first evaporator 200, thereby forming a circulating cold air.

[0044] When the three-way valve 600 is connected to the second evaporator 300 alone, the fan 700 is started to form flowing cold air, and the cold air enters the mixing chamber 400 along the third air supply passage 105 from the second evaporator 300, and then enters the first chamber 101 along the second air supply passage 104 from the mixing chamber 400, and then flows from the first chamber 101 to the second evaporator 300 along the return air passage, thereby forming circulating cold air.

[0045] When the three-way valve 600 is connected to the first evaporator 200 and the second evaporator 300 at the same time, the fan 700 is started to form a flowing cold air. On the one hand, the cold air enters the mixing chamber 400 along the first air supply passage 103 from the first evaporator 200, and on the other hand, the cold air enters the mixing chamber 400 along the third air supply passage 105 from the second evaporator 300. The cold air from the first evaporator 200 and the second evaporator 300 is mixed in the mixing chamber 400, and then enters the first chamber 101 along the second air supply passage 104 from the mixing chamber 400, and then flows from the first chamber 101 along the return air passage through the three-way valve 600 to the first evaporator 200 and the second evaporator 300, respectively, thereby forming two circulating cold air.

[0046] In the solution of this embodiment, by setting a mixing chamber 400 in the refrigerator, the first evaporator 200 is connected to the mixing chamber 400 via the first air supply passage 103, the second evaporator 300 is connected to the mixing chamber 400 via the third air supply passage 105, and the mixing chamber 400 is connected to the first chamber 101 via the second air supply passage 104, so that the first chamber 101 can receive cold air from the first evaporator 200, cold air from the second evaporator 300, and mixed air from the first evaporator 200 and the second evaporator 300. After the compressor stops working, the evaporator still has residual cold air. Therefore, during the shutdown of the compressor, the first chamber 101 can be refrigerated by utilizing the residual cold capacity of the first evaporator 200, or by utilizing the residual cold capacity of the second evaporator 300. Moreover, since the storage temperature of the second chamber 102 is very low and the second evaporator 300 is particularly cold, the first chamber 101 can be refrigerated for a longer period of time after the compressor is shut down. On the other hand, the two air flows can be mixed when the temperature of the second evaporator 300 is particularly low, so that the temperature of the cold air delivered to the first chamber 101 is more suitable. By enabling both evaporators to independently and controllably deliver airflow to the first chamber 101, it is helpful to maintain the first chamber 101 at a suitable temperature for a long time during the compressor shutdown period, and it is also possible to prevent the cold air delivered to the first chamber 101 by the evaporator with a particularly low temperature from being too low in temperature so as to cause irreversible damage to the preservation effect. For example, too low a temperature may cause the food in an overcooled state to freeze directly, and the refrigeration effect cannot be achieved. Therefore, on the basis of ensuring the storage effect of the first chamber 101, the startup frequency of the compressor is effectively reduced.

[0047] It should be noted that the first evaporator may be an evaporator for refrigerating the refrigerating compartment, or may be an evaporator for refrigerating the first compartment, that is, the magnetic field storage compartment alone.

[0048] Reference Figure 1 As shown, the first air supply passage 103 has a tapered section that gradually contracts from the first evaporator 200 to the mixing chamber 400. The third air supply passage 105 has a tapered section that gradually contracts from the second evaporator 300 to the mixing chamber 400. Specifically, the cross-sectional area of ​​the first air supply passage 103 will be reduced during the process of extending from the first evaporator 200 to the mixing chamber 400, thereby accelerating the airflow. The cross-sectional area of ​​the third air supply passage 105 will be reduced during the process of extending from the second evaporator 300 to the mixing chamber 400, thereby accelerating the airflow.

[0049] By making the first air supply passage 103 have a tapered section that gradually contracts from the first evaporator 200 to the mixing chamber 400, and the third air supply passage 105 have a tapered section that gradually contracts from the second evaporator 300 to the mixing chamber 400, the airflow can be accelerated in the process of flowing from the first evaporator 200 to the mixing chamber 400 along the first air supply passage 103, and the airflow can be accelerated in the process of flowing from the second evaporator 300 to the mixing chamber 400 along the third air supply passage 105, so that the airflow flowing from the first evaporator 200 and the second evaporator 300 into the mixing chamber 400 has greater kinetic energy, on the one hand, ensuring that the power of the airflow flowing from the mixing chamber 400 to the first chamber 101 is sufficient, and on the other hand, when the two airflows need to be mixed in the mixing chamber 400, the increase in the kinetic energy of the airflow helps to improve the mixing effect, thereby improving the mixing efficiency.

[0050] Reference Figure 1 and Figure 3 As shown, in one embodiment, the mixing chamber 400 has a first air inlet 401, a second air inlet 402 and an air outlet 403. The first air inlet 401 is connected to the first air supply passage 103 to supply air to the mixing chamber 400 via the first air supply passage 103 and the first air inlet 401. The second air inlet 402 is connected to the third air supply passage 105 to supply air to the mixing chamber 400 via the third air supply passage 105 and the second air inlet 402. The air outlet 403 is connected to the second air supply passage 104 to supply air to the second chamber 102 via the air outlet 403 and the second air supply passage 104. The mixing chamber 400 is in a square shape, the first air inlet 401 and the air outlet 403 are respectively located at two side walls connected to the mixing chamber 400, and the second air inlet 402 and the air outlet 403 are respectively located at two side walls connected to the mixing chamber 400.

[0051] Specifically, the mixing chamber 400 is a square, that is, it has six side walls, and the first air inlet 401 and the air outlet 403 are respectively located on two side walls connected to the mixing chamber 400, that is, the first air inlet 401 and the air outlet 403 are not located on two opposite side walls of the mixing chamber 400. Similarly, the second air inlet 402 and the air outlet 403 are respectively located on two side walls connected to the mixing chamber 400, that is, the second air inlet 402 and the air outlet 403 are not located on two opposite side walls of the mixing chamber 400. The above structure helps to ensure that the airflow entering from the first air inlet 401 and the second air inlet 402 achieves a better mixing effect, so that the temperature of the airflow flowing out from the air outlet 403 is suitable and uniform.

[0052] Further, the distance between the center point of the first air inlet 401 and the center point of the air outlet 403 in the length direction of the mixing chamber 400 is greater than or equal to one-half of the length of the mixing chamber 400, and the distance between the center point of the second air inlet 402 and the center point of the air outlet 403 in the length direction of the mixing chamber 400 is greater than or equal to one-half of the length of the mixing chamber 400. Specifically, a cube has three parameters: length, width, and height, and the length is the largest parameter. That is, in the direction of the two opposite side walls of the mixing chamber 400 that are farthest apart, the distance between the center point of the first air inlet 401 and the center point of the air outlet 403 is greater than or equal to one-half of the distance between the two opposite side walls, and the distance between the center point of the second air inlet 402 and the center point of the air outlet 403 is greater than or equal to one-half of the distance between the two opposite side walls. Through the above-mentioned structure, it is helpful to further ensure that the airflow entering from the first air inlet 401 and the second air inlet 402 achieves a better mixing effect before flowing out of the air outlet 403.

[0053] Reference Figure 3 As shown, preferably, the two opposite side walls of the mixing chamber are distributed longitudinally, and the air outlet 403 is arranged on a side wall located at a lower position, and the first air inlet 401 and the second air inlet 402 are located on the side wall connected to the side wall where the air outlet 403 is located. In this way, not only the airflow mixing effect can be improved, but also the smoothness of the airflow flowing out of the air outlet 403 can be improved.

[0054] Furthermore, the first air inlet 401 and the second air inlet 402 are respectively located on two side walls connected to the mixing chamber, and the center lines of the first air inlet 401 and the second air inlet 402 intersect, which helps the two air flows to meet and mix, thereby improving the mixing efficiency.

[0055] It should be noted that in some other embodiments, the first air inlet and the second air inlet are arranged opposite to each other, that is, the first air inlet and the second air inlet are respectively arranged on two opposite side walls of the mixing chamber and are aligned with each other, which also helps the two air flows to meet and mix.

[0056] Reference Figure 3 As shown, further, the area of ​​the first air inlet 401 is larger than the area of ​​the air outlet 403, and the area of ​​the second air inlet 402 is larger than the area of ​​the air outlet 403. On the one hand, the air intake of the mixing chamber 400 is larger than the air outlet, thereby ensuring the smoothness and continuity of the air outlet 403, and on the other hand, the airflow has a faster speed when flowing out of the air outlet 403, ensuring the flow power of the airflow.

[0057] Although not shown in the figure, a temperature sensor can be provided in the mixing chamber, and a damper can be provided at the air outlet. The temperature sensor is used to detect the temperature of the mixed airflow. When the mixed airflow reaches a suitable temperature, the damper is opened so that the airflow flowing to the first chamber has a suitable temperature.

[0058] like Figure 4 and Figure 5 As shown, in one embodiment, a first fan 800 is provided between the first evaporator 200 and the mixing chamber 400, so as to control the first evaporator 200 to deliver cold energy to the mixing chamber 400 by controlling the start and stop of the first fan 800. A second fan 900 is provided between the second evaporator 300 and the mixing chamber 400, so as to control the second evaporator 300 to deliver cold energy to the mixing chamber 400 by controlling the start and stop of the second fan 900. Specifically, when the first fan 800 is started alone, the first fan 800 drives the airflow to flow, and the airflow enters the mixing chamber 400 from the first evaporator 200 along the first air supply passage 103, and then enters the first chamber 101 from the mixing chamber 400 along the second air supply passage 104, and then flows from the first chamber 101 to the first evaporator 200 along the return air passage, thereby forming circulating cold air.

[0059] When the second fan 900 is started alone, the second fan 900 drives the airflow to flow, and the airflow enters the mixing chamber 400 along the third air supply passage 105 from the second evaporator 300, and then enters the first chamber 101 along the second air supply passage 104 from the mixing chamber 400, and then the first chamber 101 flows to the second evaporator 300 along the return air passage, thereby forming circulating cold air.

[0060] When the first fan 800 and the second fan 900 are started at the same time, the first fan 800 drives the airflow to flow, and the second fan 900 drives the airflow to flow. On the one hand, the cold air enters the mixing chamber 400 along the first air supply passage 103 from the first evaporator 200, and on the other hand, the cold air enters the mixing chamber 400 along the third air supply passage 105 from the second evaporator 300. The cold air from the first evaporator 200 and the second evaporator 300 are mixed in the mixing chamber 400, and then enter the first chamber 101 along the second air supply passage 104 from the mixing chamber 400, and then flow from the first chamber 101 along the return air passage to the first evaporator 200 and the second evaporator 300 respectively, thereby forming two circulating cold air.

[0061] In the solution of this embodiment, the first chamber 101 can receive the cold air from the first evaporator 200, the cold air from the second evaporator 300, and the mixed airflow from the first evaporator 200 and the second evaporator 300. After the compressor stops working, the evaporator still has residual cold capacity. Therefore, during the shutdown of the compressor, the first chamber 101 can be refrigerated by the residual cold capacity of the first evaporator 200, and the first chamber 101 can also be refrigerated by the residual cold capacity of the second evaporator 300. Moreover, because the storage temperature of the second chamber 102 is very low and the second evaporator 300 is particularly cold, the first chamber 101 can be refrigerated for a longer time after the compressor stops. On the other hand, the two airflows can be mixed when the temperature of the second evaporator 300 is particularly low, so that the temperature of the cold air sent to the first chamber 101 is more suitable. By enabling both evaporators to individually and controllably deliver airflow to the first chamber 101, it is helpful to maintain the first chamber 101 at a suitable temperature for a long time during the compressor shutdown period, and it is also possible to avoid the cold air temperature delivered to the first chamber 101 by the evaporator with a particularly low temperature being too low, thereby effectively reducing the startup frequency of the compressor while ensuring the storage effect of the first chamber 101.

[0062] By using the first fan 800 and the second fan 900 to drive the airflow from the first evaporator 200 and the second evaporator 300 to the mixing chamber 400 respectively, the two airflows have separate driving forces, which helps to improve the circulation efficiency of the airflow.

[0063] Continue to refer to Figure 4 and Figure 5 As shown, the air supply volume of the second fan 900 is greater than that of the first fan 800. Because the second evaporator 300 is farther from the mixing chamber 400, the air supply volume of the second fan 900 is greater than that of the first fan 800, which is conducive to ensuring the air supply efficiency of the second fan 900 to the mixing chamber 400, thereby ensuring the refrigeration efficiency.

[0064] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A refrigerator, comprising: A box body, wherein the box body is formed with a first chamber and a second chamber; a first evaporator, the first evaporator being used to cool the first chamber; A mixing chamber, wherein a first air supply passage is provided between the mixing chamber and the first evaporator, and a second air supply passage is provided between the mixing chamber and the first chamber, so that the cooling capacity of the first evaporator is transported to the mixing chamber via the first air supply passage, and then transported to the first chamber via the second air supply passage, so as to cool the first chamber; a second evaporator, the second evaporator being used to cool the second chamber, and a third air supply passage being provided between the second evaporator and the mixing chamber, so as to transport the cooling capacity of the second evaporator to the mixing chamber via the third air supply passage; The first evaporator and the second evaporator are both capable of controllably delivering cold energy to the mixing chamber.

2. The refrigerator according to claim 1, wherein: The first chamber is provided with a return air passage, and the return air passage is respectively connected with the first evaporator and the second evaporator through a three-way valve. A fan is provided between the three-way valve and the first chamber, and the three-way valve is located at the air outlet end of the fan, so as to control the first evaporator to transport cold energy to the mixing chamber by controlling the direction of the three-way valve and the start and stop of the fan, and control the second evaporator to transport cold energy to the mixing chamber.

3. The refrigerator according to claim 1, wherein: A first fan is provided between the first evaporator and the mixing chamber, so as to control the first evaporator to transport cold energy to the mixing chamber by controlling the start and stop of the first fan; A second fan is provided between the second evaporator and the mixing chamber, so as to control the second evaporator to transport cold air to the mixing chamber by controlling the start and stop of the second fan.

4. The refrigerator according to claim 3, wherein: The air supply volume of the second fan is greater than the air supply volume of the first fan.

5. The refrigerator according to claim 1, wherein: The first air supply passage has a tapered section that gradually contracts from the first evaporator to the mixing chamber; or the third air supply passage has a tapered section that gradually contracts from the second evaporator to the mixing chamber.

6. The refrigerator according to claim 1, wherein: The refrigerator is provided with a magnetic field generating device, and the magnetic field generating device is used to generate a magnetic field in the first chamber so as to apply a magnetic field to food placed in the first chamber.

7. The refrigerator according to claim 1, wherein: The mixing chamber has a first air inlet, a second air inlet and an air outlet, the first air inlet is communicated with the first air supply passage to supply air to the mixing chamber via the first air supply passage and the first air inlet, the second air inlet is communicated with the third air supply passage to supply air to the mixing chamber via the third air supply passage and the second air inlet, the air outlet is communicated with the second air supply passage to supply air to the second chamber via the air outlet and the second air supply passage, the mixing chamber is in a cubic shape, the first air inlet and the air outlet are respectively located on two side walls connected to the mixing chamber, and the second air inlet and the air outlet are respectively located on two side walls connected to the mixing chamber.

8. The refrigerator according to claim 7, wherein: The distance between the center point of the first air inlet and the center point of the air outlet in the length direction of the mixing chamber is greater than or equal to one half of the length of the mixing chamber, and the distance between the center point of the second air inlet and the center point of the air outlet in the length direction of the mixing chamber is greater than or equal to one half of the length of the mixing chamber.

9. The refrigerator according to claim 7, wherein: The first air inlet and the second air inlet are arranged opposite to each other; or, the first air inlet and the second air inlet are respectively located on two side walls connected to the mixing chamber, and the center lines of the first air inlet and the second air inlet intersect.

10. The refrigerator according to claim 7, wherein: The area of ​​the first air inlet is larger than the area of ​​the air outlet, and the area of ​​the second air inlet is larger than the area of ​​the air outlet.

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