Refrigerator

Abstract

The invention provides a refrigerator which comprises a refrigerator body, and a first chamber, a second chamber and a refrigeration cavity are formed in the refrigerator body. The magnetic field generating device is arranged in the second chamber so as to generate a magnetic field in the second chamber; the evaporator and the fan are arranged in the refrigeration cavity, and the refrigeration cavity communicates with the first chamber and the second chamber correspondingly, so that the fan conveys cold energy to the first chamber and the second chamber correspondingly; and the first heating device is arranged in an air supply path between the refrigeration cavity and the second chamber so as to heat airflow flowing from the refrigeration cavity to the second chamber. And the first chamber and the second chamber share one set of refrigerating system, so that a refrigerating system does not need to be additionally arranged for the magnetic field fresh-keeping chamber, and the structure of the refrigerator is simplified. The first heating device can heat the low-temperature airflow, the situation that the temperature of the food materials is too low due to the too low temperature of cold air is avoided, and therefore the fresh-keeping effect of the magnetic field fresh-keeping chamber is guaranteed while the structure is simplified.

Description

Technical Field

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

[0002] As a common household appliance, refrigerators can store items at low temperatures. With the improvement of people's living standards, higher requirements are placed on the preservation effect of refrigerators. After research, it was found that applying a magnetic field to food can play a good auxiliary role in the storage of food, which is beneficial to improve the preservation effect of food. Specifically, after the food is applied with a magnetic field, it can be in a supercooled state without being frozen at a certain sub-zero temperature, thereby realizing the refrigeration of food at a lower temperature and improving the preservation effect of food.

[0003] Because the supercooled state of food is sensitive to temperature, once the temperature is lower than the critical point, the food will quickly break through the supercooled state and freeze. Therefore, a refrigeration system is generally set up separately for the magnetic field compartment to better control the temperature of the cold air blowing into the magnetic field compartment. However, this requires an additional refrigeration system for the refrigerator with a magnetic field compartment, making the structure more complicated. 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 make the temperature of the air flow to the second chamber more suitable and uniform.

[0006] Another further object of the present invention is to further improve the uniformity of the air flow temperature.

[0007] In particular, the present invention provides a refrigerator comprising:

[0008] A box body, wherein the box body is formed with a first chamber, a second chamber, and a refrigeration cavity;

[0009] a magnetic field generating device, the magnetic field generating device being arranged in the second chamber to generate a magnetic field in the second chamber;

[0010] an evaporator and a fan, wherein the evaporator and the fan are arranged in the refrigeration chamber, and the refrigeration chamber is communicated with the first chamber and the second chamber respectively, so that the fan can transport cold energy to the first chamber and the second chamber respectively; and

[0011] A first heating device is provided in the air supply passage between the refrigeration cavity and the second chamber to heat the air flow from the refrigeration cavity to the second chamber.

[0012] Optionally, the refrigerator further comprises:

[0013] a second heating device, the second heating device being arranged in the air supply path between the refrigeration cavity and the second chamber, and the second heating device being located behind the first heating device along the extension direction of the air supply path, so that the airflow to the second chamber flows through the first heating device first and then through the second heating device; and

[0014] A temperature sensor is disposed between the first heating device and the second heating device to detect a temperature of an airflow flowing to the second heating device.

[0015] Optionally, the second heating device is an infrared heater.

[0016] Optionally, the air supply path between the refrigeration cavity and the second chamber includes a first air supply section and a second air supply section, the first heating device is arranged in the first air supply section, the second heating device is arranged in the second air supply section, the temperature sensor is arranged at the entrance of the second air supply section, and the cross-sectional area of ​​the second air supply section cut by a surface perpendicular to its own axis is smaller than the cross-sectional area of ​​the first air supply section cut by a surface perpendicular to its own axis.

[0017] Optionally, a ratio of the length to the width of a cross section of the first air supply section is greater than or equal to 2.

[0018] Optionally, a ratio of the length to the width of a cross section of the second air supply section is greater than or equal to 1 and less than or equal to 1.4.

[0019] Optionally, the length and width of the cross section of the second air supply section are both greater than or equal to 5 cm and less than or equal to 10 cm.

[0020] Optionally, a ratio of a cross-sectional area of ​​the first air supply section to a cross-sectional area of ​​the second air supply section is greater than or equal to 1.5 and less than or equal to 2.5.

[0021] Optionally, a damper is provided between the refrigeration cavity and the second chamber, and the damper is used to control the connection between the refrigeration cavity and the second chamber.

[0022] Optionally, the magnetic field generating device is a permanent magnet sheet, or the magnetic field generating device is an electromagnetic coil, or the magnetic field generating device is a structure composed of a permanent magnet sheet and an electromagnetic coil.

[0023] The refrigerator of the present invention is provided with an evaporator and a fan through a refrigeration cavity, and the refrigeration cavity is connected with the first chamber and the second chamber respectively, so that the low-temperature airflow generated by the fan can transport the cold generated by the evaporator to the first chamber to refrigerate the first chamber, and can also be transported to the second chamber to refrigerate the second chamber. That is to say, the first chamber and the second chamber share a set of refrigeration systems, that is, the magnetic field preservation chamber and other chambers share the refrigeration system, so there is no need to set up an additional refrigeration system for the magnetic field preservation chamber, which helps to simplify the refrigerator structure. However, because the cold air temperature of the ordinary chamber is very low, when the magnetic field preservation chamber and other chambers share the refrigeration system, it is easy to cause the temperature of the food in the magnetic field preservation chamber to directly exceed the appropriate temperature and lose the magnetic field preservation effect. By arranging a first heating device on the air supply air path between the second chamber and the refrigeration cavity, the first heating device can heat the low-temperature airflow, so that the airflow flowing to the second chamber has a more suitable temperature, thereby avoiding the cold air temperature being too low to cause the food temperature to be too low, thereby simplifying the structure while ensuring the preservation effect of the magnetic field preservation chamber.

[0024] Furthermore, the refrigerator of the present invention is provided with a second heating device and a temperature sensor in the air supply path between the second compartment and the refrigeration cavity, so that the low-temperature airflow flowing from the refrigeration cavity to the second compartment first flows through the first heating device, then flows through the temperature sensor, and then flows through the second heating device. The temperature sensor is able to detect the temperature of the airflow after it flows through the first heating device and does not flow through the second heating device. According to the detection structure of the temperature sensor, when the airflow temperature is less than the preset temperature, the second heating device is turned on to heat the airflow. The second heating device is a heater that uses radiation to instantly heat the airflow. It heats quickly and has a small thermal inertia. It can instantaneously and directional heat part of the airflow, reducing the impact on other parts of the airflow. Therefore, the temperature of the airflow flowing to the second compartment can be made more suitable and uniform, further reducing the occurrence of the food temperature being too low, and is conducive to ensuring the uniformity of the temperature of the second compartment and the preservation effect in the entire space.

[0025] Furthermore, the refrigerator of the present invention arranges the first heating device in the first air supply section and the second heating device in the second air supply section, and the cross-sectional area of ​​the second air supply section is smaller than the cross-sectional area of ​​the first air supply section, so that after the airflow is heated by the first heating device in the thicker first air supply section, it will become a finer airflow after flowing into the second air supply section. If the airflow still needs to be heated, it will be heated by the second heating device in the second air supply section. Because the airflow is changed into finer airflow strands in the second air supply section, the second heating device can heat the small airflow in the second air supply section more accurately, further improving the uniformity of the airflow temperature and improving the refrigeration effect on the second chamber.

[0026] 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

[0027] 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:

[0028] Figure 1 is a schematic diagram of a refrigerator according to an embodiment of the present invention;

[0029] Figure 2 is a simplified schematic diagram of a partial structure of a refrigerator according to an embodiment of the present invention;

[0030] Figure 3 is a schematic block diagram of a refrigerator according to an 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", "axial", "radial", "circumferential", "clockwise", "counterclockwise" 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, and do not indicate or imply 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] In addition, it should be noted that in the description of the present invention, the terms "cold" and "heat" are two descriptions of the same physical state. That is, the higher the "cold" of a target object (such as an evaporator, air, condenser, etc.), the lower the "heat" it has, and the lower the "cold" it has, the higher the "heat" it has. When a target object absorbs "cold", it will release "heat", and when it releases "cold", it will absorb "heat".

[0035] like Figure 1 and Figure 2 As shown, in one embodiment, the refrigerator includes a box body 100, a magnetic field generating device 200, an evaporator 300, a fan 400 and a first heating device 500. The box body 100 is formed with a first chamber 101, a second chamber 102, and a refrigeration chamber 103. The magnetic field generating device 200 is arranged in the second chamber 102 to generate a magnetic field in the second chamber 102. The evaporator 300 and the fan 400 are arranged in the refrigeration chamber 103, and the refrigeration chamber 103 is connected to the first chamber 101 and the second chamber 102 respectively, so that the fan 400 delivers cold energy to the first chamber 101 and the second chamber 102 respectively. The first heating device 500 is arranged in the air supply air path between the refrigeration chamber 103 and the second chamber 102 to heat the air flow from the refrigeration chamber 103 to the second chamber 102.

[0036] Reference Figure 1 and Figure 2 As shown, specifically, the first chamber 101 and the second chamber 102 are distributed along the longitudinal direction of the box body 100, and the second chamber 102 is located above the first chamber 101. Among them, the first chamber 101 is a freezing chamber. The second chamber 102 is a magnetic field preservation chamber. In addition, referring to Figure 1 As shown, the refrigerator further has other compartments besides the first compartment 101 and the second compartment 102. The other compartments may be a refrigerating compartment, a temperature-changing compartment, a freezing compartment, etc.

[0037] It should be noted that, in some other embodiments, the refrigerator may only have the first compartment and the second compartment. The first compartment may also be a variable temperature compartment, a refrigeration compartment, etc. That is to say, for the refrigerator of the present application, those skilled in the art may configure the number, function and layout of compartments other than the first compartment and the second compartment according to needs.

[0038] like Figure 1As shown, the magnetic field generating device 200 is installed in the second chamber 102. The magnetic field generating device 200 can generate a magnetic field in the second chamber 102, so that the second chamber 102 is used as a magnetic field preservation chamber. When food is placed in the second chamber 102, the magnetic field generated by the magnetic field generating device 200 acts on the food, so that the food is affected by the magnetic field during the cold storage process, thereby improving the preservation effect of the food.

[0039] like Figure 1 and Figure 2 As shown, there is a circulatory air path between the first chamber 101 and the refrigeration chamber 103, specifically, there is an air supply path and a return path between the first chamber 101 and the refrigeration chamber 103. At the same time, there is a circulatory air path between the second chamber 102 and the refrigeration chamber 103, specifically, there is an air supply path and a return path between the second chamber 102 and the refrigeration chamber 103. The evaporator 300 is installed in the refrigeration chamber 103. During the operation of the evaporator 300, the evaporator 300 releases cold energy in the refrigeration chamber 103, so that the temperature in the refrigeration chamber 103 is very low. The fan 400 is installed in the refrigeration chamber 103. When the fan 400 is started, the low-temperature air in the refrigeration chamber 103 flows. The low-temperature airflow can enter the first chamber 101 through the air supply path between the first chamber 101 and the refrigeration chamber 103, bring cold energy into the first chamber 101 to refrigerate the first chamber 101, and then the airflow can return to the refrigeration chamber 103 through the return air path between the first chamber 101 and the refrigeration chamber 103, so that the low-temperature airflow can circulate between the first chamber 101 and the refrigeration chamber 103, and continuously refrigerate the first chamber 101.

[0040] Similarly, the low-temperature airflow can enter the second chamber 102 via the air supply path between the second chamber 102 and the refrigeration chamber 103, bring the cold energy into the second chamber 102 to refrigerate the second chamber 102, and then the airflow can return to the refrigeration chamber 103 via the return air path between the second chamber 102 and the refrigeration chamber 103, so that the low-temperature airflow can circulate between the second chamber 102 and the refrigeration chamber 103, and continuously refrigerate the second chamber 102. Because there is no need to worry about the problem of too low food temperature in ordinary chambers, the temperature of the evaporator is generally very low, that is, the temperature of the cold air sent to the chamber is very low, generally around minus ten degrees. However, food is more sensitive to temperature under magnetic field storage, and the lowest temperature at which food remains in a supercooled state is generally around minus four degrees. If the cold air temperature is too low, it is easy to cause the temperature of the food to directly exceed the appropriate temperature and lose the magnetic field preservation effect. The first heating device 500 is disposed in the air supply path between the second chamber 102 and the refrigeration chamber 103. Therefore, when the low-temperature airflow flows from the refrigeration chamber 103 to the second chamber 102, the first heating device 500 can heat the low-temperature airflow, so that the airflow flowing to the second chamber 102 has a more suitable temperature. The first heating device 500 is a heating device such as a heating wire or a heating tube.

[0041] In the solution of this embodiment, the evaporator 300 and the fan 400 are arranged through the refrigeration chamber 103, and the refrigeration chamber 103 is connected to the first chamber 101 and the second chamber 102 respectively, so that the low-temperature airflow generated by the fan 400 can transport the cold generated by the evaporator 300 to the first chamber 101 to refrigerate the first chamber 101, and can also be transported to the second chamber 102 to refrigerate the second chamber 102. In other words, the first chamber 101 and the second chamber 102 share a refrigeration system, that is, the magnetic field preservation chamber and other chambers share the refrigeration system, so there is no need to set up an additional refrigeration system for the magnetic field preservation chamber, which helps to simplify the refrigerator structure. However, because the cold air temperature of the ordinary chamber is very low, when the magnetic field preservation chamber and other chambers share the refrigeration system, it is easy to cause the temperature of the food in the magnetic field preservation chamber to directly exceed the appropriate temperature and lose the magnetic field preservation effect. By arranging the first heating device 500 on the air supply path between the second chamber 102 and the refrigeration chamber 103, the first heating device 500 can heat the low-temperature airflow, so that the airflow flowing to the second chamber 102 has a more suitable temperature, thereby avoiding the cold air temperature being too low to cause the food temperature to be too low, thereby simplifying the structure while ensuring the preservation effect of the magnetic field preservation chamber.

[0042] Furthermore, by setting the first compartment 101 as a freezing compartment, the temperature of the evaporator 300 when working will be particularly low. Therefore, when the evaporator 300 finishes working, the refrigeration chamber 103 will still have a relatively low temperature, that is, there is a certain amount of residual cold. Since the storage temperature of the magnetic field preservation compartment, that is, the second compartment 102, is relatively high relative to the working temperature of the evaporator 300 that provides cold for the freezing compartment, the residual cold of the evaporator 300 still meets the requirement for refrigerating the second compartment 102, so that the residual cold can be used to refrigerate the second compartment 102, that is, when the evaporator 300 is not working, but the temperature of the evaporator 300 meets certain requirements, and when the second compartment 102 needs to be refrigerated, only the fan 400 can be turned on without operating the evaporator 300, so that the residual cold is used to refrigerate the second compartment 102, thereby reducing the start-stop frequency of the compressor and saving energy.

[0043] like Figure 1 and Figure 2 As shown, the refrigerator further includes a second heating device 600 and a temperature sensor 700. The second heating device 600 is a heater that uses radiation waves for instantaneous heating. For example, the second heating device 600 may be an infrared heater. The second heating device 600 is disposed in the air supply path between the refrigeration cavity 103 and the second compartment 102, and the second heating device 600 is located behind the first heating device 500 along the extension direction of the air supply path, so that the airflow flowing to the second compartment 102 first flows through the first heating device 500 and then flows through the second heating device 600. The temperature sensor 700 is disposed between the first heating device 500 and the second heating device 600 to detect the temperature of the airflow flowing to the second heating device 600.

[0044] Specifically, in the process of low-temperature airflow flowing from the refrigeration cavity 103 to the second chamber 102, the low-temperature airflow first flows through the first heating device 500, then flows through the temperature sensor 700, and then flows through the second heating device 600. The temperature sensor 700 can detect the temperature of the airflow after flowing through the first heating device 500 and not flowing through the second heating device 600. Because the airflow heated by the first heating device 500 has a certain temperature unevenness, the temperature sensor 700 is used to detect the airflow temperature. When the airflow temperature is still lower than the preset temperature, the second heating device 600 is used to compensate and heat part of the airflow, so that the temperature of the airflow flowing to the second chamber 102 is more suitable and more uniform, further ensuring the refrigeration effect of the second chamber 102. In addition, the second heating device 600 is an infrared heater, which heats quickly and has a small thermal inertia. It can perform instantaneous directional heating on part of the airflow, reducing the impact on other parts of the airflow.

[0045] By arranging the second heating device 600 and the temperature sensor 700 in the air supply path between the second chamber 102 and the refrigeration chamber 103, the low-temperature airflow flowing from the refrigeration chamber 103 to the second chamber 102 first flows through the first heating device 500, then flows through the temperature sensor 700, and then flows through the second heating device 600. The temperature sensor 700 can detect the temperature of the airflow that has flowed through the first heating device 500 but has not flowed through the second heating device 600. According to the detection structure of the temperature sensor 700, when the airflow temperature is less than the preset temperature, the second heating device 600 is turned on to heat the airflow. The second heating device 600 is a heater that uses radiation waves for instantaneous heating, such as an infrared heater, which heats quickly and has a small thermal inertia. It can perform instantaneous directional heating on part of the airflow, reducing the impact on other parts of the airflow. Therefore, the temperature of the airflow flowing to the second chamber 102 can be made more suitable and uniform, further reducing the occurrence of the situation where the temperature of the food is too low, and is conducive to ensuring the uniformity of the temperature of the second chamber 102 and the preservation effect in the entire space.

[0046] Furthermore, the air supply path between the refrigeration cavity 103 and the second chamber 102 includes a first air supply section and a second air supply section, the first heating device 500 is arranged in the first air supply section, the second heating device is arranged in the second air supply section, the temperature sensor 700 is arranged at the entrance of the second air supply section, and the cross-sectional area of ​​the second air supply section is smaller than the cross-sectional area of ​​the first air supply section.

[0047] Specifically, the first air supply section and the second air supply section respectively constitute a part of the air supply path between the second chamber 102 and the refrigeration chamber 103. In the process of the air flow flowing from the refrigeration chamber 103 to the second chamber 102, the air flow first flows through the first air supply section, is heated by the first heating device 500 in the first air supply section, and then flows into the second air supply section. In the second air supply section, the air flow first flows through the temperature sensor 700, and the second heating device 600 is controlled according to the detection result of the temperature sensor 700 to heat the air flow in the second air supply section. The cross-sectional area of ​​the second air supply section cut by the surface perpendicular to its own axis is smaller than the cross-sectional area of ​​the first air supply section cut by the surface perpendicular to its own axis. The first air supply section and the second air supply section are part of the air path, so the axis of the first air supply section and the second air supply section is the center line along the extension direction of the air path. In other words, the second air supply section is thinner than the first air supply section. In addition, the thickness of the entire second air supply section is the same, that is, the setting position of the temperature sensor 700 and the setting position of the second heating device 600 are the same.

[0048] By arranging the first heating device 500 in the first air supply section and the second heating device in the second air supply section, and the cross-sectional area of ​​the second air supply section is smaller than the cross-sectional area of ​​the first air supply section, the airflow is heated by the first heating device in the thicker first air supply section and becomes a thinner airflow after flowing into the second air supply section. If the airflow still needs to be heated, it is heated by the second heating device 600 in the second air supply section. Because the airflow becomes a thinner airflow in the second air supply section, the second heating device 600 can heat the small airflow in the second air supply section more accurately, further improving the uniformity of the airflow temperature and improving the cooling effect on the second chamber 102.

[0049] Furthermore, the ratio of the length to the width of the cross section of the first air supply section is greater than or equal to 2. In other words, the first air supply section is a substantially flat space, so that the first heating device 500 heats the airflow over a large area in the first air supply section, thereby improving the initial heating efficiency of the first heating device 500 on the airflow.

[0050] Furthermore, the ratio of the length to the width of the cross section of the second air supply section is greater than or equal to 1 and less than or equal to 1.4. For example, it can be 1, 1.1, 1.2, 1.3, 1.4. The ratio of the length to the width of the cross section of the second air supply section is greater than or equal to 1 and less than or equal to 1.2. Preferably, that is to say, the length and width of the cross section of the second air supply section are roughly the same, so that the second air supply section is more symmetrical, which helps the second heating device 600 to fully heat a section of airflow in the second air supply section and ensure the instantaneous heating effect.

[0051] Further, the length and width of the cross section of the second air supply section are both greater than or equal to 5 cm and less than or equal to 10 cm. The ratio of the length and width of the cross section of the second air supply section is greater than or equal to 1 and less than or equal to 1.4. For example, the length and width of the cross section of the second air supply section can be 5 cm and 5 cm, or 5 cm and 6 cm, etc. The above structure can further enable the second heating device 600 to fully heat a section of airflow in the second air supply section, thereby ensuring the instantaneous heating effect.

[0052] Furthermore, the ratio of the cross-sectional area of ​​the first air supply section to the cross-sectional area of ​​the second air supply section is greater than or equal to 1.5 and less than or equal to 2.5. The above structure prevents the speed of the airflow flowing into the second air supply section from increasing too much, so that the airflow flows through the second heating device 600 at a suitable speed, which helps to ensure that the second heating device 600 can fully heat the airflow in the second air supply section.

[0053] like Figure 1As shown, a damper 800 is provided between the refrigeration chamber 103 and the second chamber 102, and the damper 800 is used to control the connection and disconnection between the refrigeration chamber 103 and the second chamber 102. Specifically, when the damper 800 is opened, the airflow can flow into the second chamber 102, and when the damper 800 is closed, the airflow cannot enter the second chamber 102, so that the refrigeration system can refrigerate the first chamber 101 alone, avoiding affecting the second chamber 102 during the refrigeration of the first chamber 101, causing the temperature of the food in the second chamber 102 to be too low.

[0054] Reference Figure 1 As shown, the magnetic field generating device 200 is a permanent magnet sheet. The permanent magnet sheet can generate a magnetic field and has a simple structure. It should be noted that in some other embodiments, the magnetic field generating device can also be an electromagnetic coil, or the magnetic field generating device is a structure composed of a permanent magnet sheet and an electromagnetic coil.

[0055] Reference Figure 3 As shown, in one embodiment, the refrigerator 1 includes a control unit 10. The control unit 10 is configured to obtain the temperature of the evaporator 300, and control the heating power of the first heating device 500 according to the temperature of the evaporator 300. Specifically, a temperature sensing device 20 is provided at the evaporator 300, and the control unit 10 is connected in communication with the temperature sensing device 20, so that the control unit 10 can obtain the evaporator temperature detected by the temperature sensing device 20. The control unit 10 controls the heating power of the first heating device 500 according to the obtained evaporator temperature. Specifically, the control unit 10 controls the heating power of the first heating device 500 according to the difference between the evaporator temperature and the set temperature. When the evaporator temperature is lower than the set temperature and the difference is larger, the heating power of the first heating device 500 is larger. When the evaporator temperature is lower than the set temperature and the difference is smaller, the heating power of the first heating device 500 is smaller, which can be 0.

[0056] Reference Figure 3 As shown, further, the control unit 10 is configured to obtain the temperature detection value of the temperature sensor 700, and control the heating power of the second heating device 600 according to the temperature detection value of the temperature sensor 700. Specifically, the control unit 10 is connected to the temperature sensor 700 in communication, so that the control unit 10 can obtain the airflow temperature detected by the temperature sensor 700. The control unit 10 controls the heating power of the second heating device 600 according to the obtained airflow temperature. Specifically, the control unit 10 controls the heating power of the second heating device 600 according to the difference between the airflow temperature and the preset temperature. When the airflow temperature is lower than the preset temperature and the difference is larger, the heating power of the second heating device 600 is larger. When the airflow temperature is lower than the preset temperature and the difference is smaller, the heating power of the first heating device 500 is smaller, which can be 0.

[0057] Furthermore, a wind speed sensor is provided at the temperature sensor 700, and the wind speed sensor can detect the airflow velocity, and the control unit 10 is configured to obtain the time for the airflow to reach the second heating device 600 from the wind speed sensor according to the airflow velocity and the distance between the wind speed sensor and the second heating device 600. Thus, the control unit 10 can accurately start the second heating device 600 to heat the airflow when the airflow temperature detected by the temperature sensor 700 meets the heating requirements.

[0058] 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, a second chamber, and a refrigeration cavity; a magnetic field generating device, the magnetic field generating device being arranged in the second chamber to generate a magnetic field in the second chamber; an evaporator and a fan, wherein the evaporator and the fan are arranged in the refrigeration chamber, and the refrigeration chamber is communicated with the first chamber and the second chamber respectively, so that the fan can transport cold energy to the first chamber and the second chamber respectively; as well as A first heating device is provided in the air supply passage between the refrigeration cavity and the second chamber to heat the air flow from the refrigeration cavity to the second chamber.

2. The refrigerator according to claim 1, wherein: The refrigerator further comprises: a second heating device, the second heating device being arranged in the air supply path between the refrigeration cavity and the second chamber, and the second heating device being located behind the first heating device along the extension direction of the air supply path, so that the airflow to the second chamber flows through the first heating device first and then through the second heating device; and A temperature sensor is disposed between the first heating device and the second heating device to detect a temperature of an airflow flowing to the second heating device.

3. The refrigerator according to claim 2, wherein: The second heating device is an infrared heater.

4. The refrigerator according to claim 2, wherein: The air supply path between the refrigeration cavity and the second chamber includes a first air supply section and a second air supply section, the first heating device is arranged in the first air supply section, the second heating device is arranged in the second air supply section, the temperature sensor is arranged at the entrance of the second air supply section, and the cross-sectional area of ​​the second air supply section cut by a surface perpendicular to the axis thereof is smaller than the cross-sectional area of ​​the first air supply section cut by a surface perpendicular to the axis thereof.

5. The refrigerator according to claim 4, wherein: A ratio of the length to the width of a cross section of the first air supply section is greater than or equal to 2.

6. The refrigerator according to claim 4, wherein: The ratio of the length to the width of the cross section of the second air supply section is greater than or equal to 1 and less than or equal to 1.

4.

7. The refrigerator according to claim 6, wherein: The length and width of the cross section of the second air supply section are both greater than or equal to 5 cm and less than or equal to 10 cm.

8. The refrigerator according to claim 4, wherein: A ratio of a cross-sectional area of ​​the first air supply section to a cross-sectional area of ​​the second air supply section is greater than or equal to 1.5 and less than or equal to 2.

5.

9. The refrigerator according to claim 1, wherein: A damper is provided between the refrigeration cavity and the second chamber, and the damper is used to control the connection between the refrigeration cavity and the second chamber.

10. The refrigerator according to claim 1, wherein: The magnetic field generating device is a permanent magnetic sheet, or the magnetic field generating device is an electromagnetic coil, or the magnetic field generating device is a structure composed of a permanent magnetic sheet and an electromagnetic coil.

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