Refrigerator

Abstract

The utility model relates to a refrigerator which comprises a refrigerator body, a refrigerating chamber (1) and a refrigerator door (2). The refrigeration air duct assembly (2) is arranged in the refrigerator body; the fan (3) is arranged in the refrigerator body and is configured to introduce gas from the outside and enable the gas to move towards the refrigerating chamber (1); and the surface air cooler (4) is arranged in the refrigerator body, is close to the refrigeration air duct assembly (2) and is located on a moving path of the gas from the fan (3) to the refrigeration chamber (1), and the surface air cooler (4) is configured to obtain the cooling capacity from the refrigeration air duct assembly (2) and exchange heat with the gas so as to enable the gas to humidify the refrigeration chamber (1).

Description

Technical Field

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

[0002] Humidity is an important factor affecting the shelf life and quality of fruits and vegetables. Maintaining a high humidity environment is conducive to the long-term storage of fruits and vegetables and the retention of nutrients, and humidification is an important means to maintain a high humidity environment.

[0003] Among the humidification methods currently available, passive humidification suffers from issues such as high dryness loss and slow humidification rates. Liquid mist humidification often requires users to manually replenish water regularly, and condensation easily forms on the surface of fruits and vegetables, hindering their preservation. Volatile humidification also requires users to regularly replenish water, resulting in poor humidification results and an inability to maintain a high humidity level. Utility Model Content

[0004] In view of this, an embodiment of the present disclosure provides a refrigerator capable of improving humidification capacity.

[0005] In one aspect of the present disclosure, there is provided a refrigerator comprising:

[0006] A box body, wherein a refrigeration chamber is provided in the box body;

[0007] The refrigeration air duct assembly is arranged in the box;

[0008] a fan, disposed in the box, configured to introduce gas from the outside and move the gas toward the refrigerated compartment; and

[0009] The surface cooler is arranged in the box, close to the refrigeration duct assembly, and located on the path of gas moving from the fan to the refrigeration chamber. The surface cooler is configured to obtain cold energy from the refrigeration duct assembly and exchange heat with the gas to humidify the refrigeration chamber.

[0010] In some embodiments, the refrigerator further comprises:

[0011] The guide member is disposed near the air outlet of the fan and is configured to guide the gas to move toward the surface cooler.

[0012] In some embodiments, the guide member is rotatably connected to the refrigerating chamber to guide the gas to move to different positions of the working surface of the refrigeration unit.

[0013] In some embodiments, the refrigerator further comprises:

[0014] A filter element is provided on the path of gas entering the refrigeration chamber and is connected to the refrigeration chamber;

[0015] The filter element has a plurality of pores.

[0016] In some embodiments, the refrigerator further comprises:

[0017] The sump, disposed adjacent to the fan, is configured to collect condensed water formed on the working surface of the surface cooler.

[0018] In some embodiments, the speed of the fan is adjustable.

[0019] In some embodiments, the refrigerator further comprises:

[0020] a first detection device configured to detect the humidity of the refrigerating chamber and / or the temperature of the humidified gas entering the refrigerating chamber;

[0021] The humidified gas includes the gas introduced from the outside by the fan and exchanged with the surface cooler.

[0022] In some embodiments, the refrigerator further comprises:

[0023] The second detection device is configured to detect the temperature of the surface cooler.

[0024] Therefore, according to the embodiment of the present disclosure, external air is introduced through a fan and cooled by a surface cooler. The cooled air enters the refrigerated drawer of the refrigerator to humidify the stored items, so that the refrigerator can have a long-term and stable humidification source, and can provide a high-humidity environment for fruits, vegetables and other items stored in the refrigerator, reducing the dryness of fruits and vegetables, and saving users the operation of frequently adding water for humidification, thereby improving the humidification and preservation capabilities of the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0026] The present disclosure can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0027] Figure 1 It is a structural schematic diagram of some embodiments of the refrigerator according to the present disclosure.

[0028] In the picture:

[0029] 1. Refrigerator; 11. Refrigerator drawer;

[0030] 2. Refrigeration duct assembly; 21. Duct cover;

[0031] 3. Fan; 4. Surface cooler; 5. Flow guide; 6. Filter; 7. Water collection tank.

[0032] It should be understood that the size of each part shown in the drawings is not drawn according to the actual proportional relationship.In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION

[0033] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure, its application, or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of parts and steps, the composition of materials, numerical expressions, and numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0034] The terms "first", "second" and similar terms used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The terms "include" or "comprises" and similar terms mean that the elements before the term include the elements listed after the term, and do not exclude the possibility of also including other elements. The terms "upper", "lower", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0035] In the present disclosure, when a specific device is described as being located between a first device and a second device, an intervening device may or may not be present between the specific device and the first device or the second device. When a specific device is described as being connected to another device, the specific device may be directly connected to the other device without an intervening device, or may be not directly connected to the other device but with an intervening device.

[0036] All terms (including technical or scientific terms) used in this disclosure have the same meaning as those understood by one of ordinary skill in the art to which this disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, general dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined herein.

[0037] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0038] Humidity is an important factor affecting the shelf life and quality of fruits and vegetables. Maintaining a high humidity environment is conducive to the long-term storage of fruits and vegetables and the retention of nutrients, and humidification is an important means to maintain a high humidity environment.

[0039] Among the humidification methods used in related technologies, passive humidification has problems such as high dryness loss and slow humidification rates. Liquid mist humidification mostly requires users to manually replenish water regularly. If the humidified gas is not condensed, it will easily contain too much water, which will easily form condensation on the surface of fruits and vegetables, which is not conducive to their preservation. Volatile humidification also has the problem of requiring users to replenish water regularly or relying on the transpiration of the fruits and vegetables themselves, resulting in poor humidification and the inability to maintain a high humidity level.

[0040] In view of this, an embodiment of the present disclosure provides a refrigerator capable of improving humidification capacity.

[0041] Figure 1 is a schematic structural diagram of some embodiments of the refrigerator according to the present disclosure, with reference to Figure 1 The refrigerator includes a box body, a refrigeration air duct assembly 2, a fan 3 and a surface cooler 4.

[0042] A refrigeration chamber 1 is provided in the box body, and the refrigeration chamber 1 includes but is not limited to one or more refrigeration drawers 11 . The refrigeration drawers 11 are used to refrigerate items such as fruits and vegetables to keep the items stored in the refrigeration drawers 11 fresh.

[0043] The refrigeration duct assembly 2 is disposed within the refrigerator. Excess cooling capacity from the refrigeration duct assembly 2 is supplied to the surface cooler 4. Cool air from the refrigeration duct flows within the refrigeration duct assembly 2, distributing the cool air to control the refrigerator's temperature. The refrigeration duct assembly 2 includes a duct cover 21.

[0044] The fan 3 is disposed within the refrigerator and is configured to draw in air from the outside and move it toward the refrigerating chamber 1. The fan 3 includes, but is not limited to, a fresh air fan and can be disposed on the rear wall of the refrigerator. The high-temperature, high-humidity air from the outside is delivered into the interlayer between the air duct cover 21 of the refrigerating air duct assembly 2 and the refrigerating chamber 1 under the wind pressure generated by the operation of the fan 3.

[0045] The surface cooler 4 is arranged in the box, close to the refrigeration duct assembly 2, and located on the path of the gas moving from the fan 3 to the refrigeration chamber 1. The surface cooler 4 is configured to obtain cold energy from the refrigeration duct assembly 2 and exchange heat with the gas to humidify the refrigeration chamber.

[0046] The excess cooling energy of the refrigeration duct assembly 2 during refrigeration is provided to the surface cooler 4, so that the temperature of the surface cooler 4 drops below the temperature of the refrigeration chamber 1. The surface cooler 4 includes, but is not limited to, extending along the extension direction of the refrigeration duct assembly 2 and abutting against the refrigeration duct assembly 2 to increase the contact area with the refrigeration duct assembly 2 and reduce the loss of cooling energy during the transmission process.

[0047] In this embodiment, external air is introduced through the fan 3 and cooled by the surface cooler 4. The cooled air enters the refrigerated drawer 11 of the refrigerating chamber 1 to humidify the stored items, so that the refrigerating chamber 1 can have a long-term and stable humidification source, and can provide a high-humidity environment for fruits, vegetables and other items stored in the refrigerating chamber, reduce the dryness of fruits and vegetables, and save users from the operation of frequently adding water for humidification, thereby improving the humidification and preservation ability of the refrigerator.

[0048] refer to Figure 1 In some embodiments, the refrigerator further comprises a guide member 5, which is arranged near the air outlet of the fan 3 and is configured to guide the gas to move toward the surface cooler 4. The air outlet direction of the fan 3 is as follows: Figure 1 As shown in A.

[0049] The guide member 5 is facing the air outlet of the fan 3. The extension direction of the guide member 5 is close to the surface cooler 4 and forms a certain angle with the air outlet direction of the fan 3, thereby guiding the gas discharged by the fan 3 to move from the gap between the guide member 5 and the fan 3 to the surface cooler 4 along the extension direction of the guide member 5.

[0050] In this embodiment, by providing a guide member 5 to guide the gas to move more concentratedly toward the working surface of the surface cooler 4, the heat exchange efficiency between the gas and the surface cooler 4 can be improved, thereby improving the humidification capacity of the refrigerator to provide a stable high-humidity environment for the storage of fruits and vegetables.

[0051] refer to Figure 1 In some embodiments, the guide member 5 is rotatably connected to the refrigerating chamber 1 to guide the gas to move to different positions on the working surface of the surface cooler 4. The guide member 5 can be provided on the rear wall of the refrigerating drawer 11 of the refrigerating chamber 1 and rotatably connected to the refrigerating drawer 11.

[0052] A rotating shaft is provided at the end of the guide member 5, which can be driven by a motor to drive the guide member 5 to rotate, thereby adjusting the angle between the guide member 5 and the air outlet direction of the fan 3, adjusting the size of the gap between the guide member 5 and the fan 3, and then guiding the gas to move to different positions on the working surface of the surface cooler 4.

[0053] When the guide member 5 rotates toward the direction of the fan 3, that is, Figure 1 As shown in the figure, the gap between the guide member 5 and the fan 3 is reduced, and the gas exchanges heat with the working surface of the cooler 4 closer to the fan 3. At this time, the heat exchange area between the gas and the cooler 4 is reduced.

[0054] When the guide member 5 rotates away from the fan 3, that is, Figure 1 As shown in the figure, the counterclockwise rotation increases the gap between the guide member 5 and the fan 3, and the gas can exchange heat with the working surface of the cooler 4 farther away from the fan 3. At this time, the gas can generate a larger heat exchange area with the cooler 4.

[0055] In this embodiment, by adjusting the angle of the flow guide 5, the heat exchange area between the gas and the surface cooler 4 can be increased or decreased, and the temperature of the gas in the refrigerating chamber 1 can be specifically adjusted according to the humidification needs.

[0056] refer to Figure 1 In some embodiments, the refrigerator further includes a filter element 6, which is disposed on a movement path of gas entering the refrigerating chamber 1 and is in communication with the refrigerating chamber 1, and has a plurality of pores.

[0057] The filter element 6 is positioned along the path of gas from the blower 3 to the refrigerated compartment. The filter element 6 includes, but is not limited to, a porous medium layer, which can be made of activated carbon. Under the influence of the wind pressure and osmotic pressure of the blower 3, the gas passes through the filter element 6 and enters the refrigerated compartment. The filter element 6 also includes, but is not limited to, a large number of pores. The gas encounters significant resistance when passing through these pores, which can reduce the gas flow rate.

[0058] The gas changes direction multiple times when passing through the complex pores inside the filter element 6, thereby increasing the chances of collision between gases, promoting the diffusion process between different components, and thus enhancing the gas mixing effect.

[0059] The large number of pores in the filter element 6 increases the opportunities for heat conduction and convection heat transfer for the gas, and because the flow rate of the gas is slowed down, more sufficient temperature and humidity exchange can be achieved.

[0060] In this embodiment, by setting up the filter element 6, the flow rate of the gas can be reduced, and the gas can be more fully mixed and the temperature and humidity exchange can be achieved when passing through, so that the temperature and humidity of the gas entering the cold storage room 1 are more uniform. In addition, the filter element 6 can also adsorb impurities in the gas and sterilize and deodorize the gas.

[0061] refer to Figure 1 In some embodiments, the refrigerating chamber 1 includes one or more refrigerating drawers 11 , and the filter 6 is disposed on a wall of the refrigerating drawer 11 close to the surface cooler 4 .

[0062] In this embodiment, the filter element 6 is arranged on the wall of the refrigerated drawer 11, which facilitates the installation of the filter element 6 and enables the gas to enter the refrigerated drawer 11 to pass through the filter element 6 more concentratedly, thereby achieving more efficient filtering and adsorption treatment and more sufficient temperature and humidity exchange.

[0063] refer to Figure 1 In some embodiments, the surface cooler 4 extends along the extension direction of the refrigeration air duct assembly 2.

[0064] In this embodiment, the surface cooler 4 is arranged close to the refrigerated air duct assembly 2 and extends in the same direction as the refrigerated air duct assembly 2 so as to increase the contact area with the refrigerated air duct assembly 2, reduce the loss of cold energy during the transmission process, and help improve the utilization rate of the refrigerated air supply cold energy.

[0065] refer to Figure 1 In some embodiments, the refrigerator further includes a water collecting tank 7 , which is disposed near the fan 3 and configured to collect condensed water formed on the working surface of the surface cooler 4 .

[0066] The water collection tank 7 is located below the cooler 4 and the fan 3. Condensed water formed by heat exchange between the cooler 4 and the outside air drips down the surface of the cooler 4 under the action of gravity and is collected by the water collection tank 7. The water collection tank 7 can be connected to the water receiving pan at the bottom of the refrigerator so that the condensed water collected by the water collection tank 7 can be directed to the water receiving pan, evaporate in the water receiving pan, and be discharged from the machine compartment.

[0067] In this embodiment, the water collecting tank 7 can collect the condensed water generated when the gas passes through the filter element 6 and the condensed water formed on the working surface of the surface cooler 4. By collecting the condensed water by the water collecting tank 7, the risk of condensed water accumulation affecting the safety of electrical equipment can be reduced, which helps to maintain the safe operation of the refrigerator.

[0068] In some embodiments, the speed of the fan 3 is adjustable.

[0069] When the temperature of the humidified gas is greater than the second preset temperature, the speed of the fan 3 is increased to increase the heat exchange degree between the gas introduced from the outside and the surface cooler 4, thereby increasing the cooling capacity provided to the gas and reducing the temperature of the gas.

[0070] When the temperature of the humidified gas is lower than the third preset temperature, the rotation speed of the fan 3 is reduced, and the degree of heat exchange between the gas introduced from the outside and the surface cooler 4 is reduced, thereby reducing the cooling capacity provided to the gas, so as to increase the temperature of the gas and also increase the water vapor content in the gas.

[0071] In this embodiment, the heat exchange degree between the surface cooler 4 and the gas introduced from the outside is controlled by adjusting the speed of the fan 3, and the temperature of the humidified gas entering the cold storage chamber 1 is accurately controlled to provide a stable and suitable storage environment for the items stored in the cold storage chamber 1 and prolong the freshness of the stored items.

[0072] In some embodiments, the refrigerator further includes a first detection device configured to detect the humidity within refrigerating chamber 1 and / or obtain the temperature of humidified gas entering refrigerating chamber 1. The first detection device includes, but is not limited to, a device disposed within refrigerating chamber 1 to obtain an average humidity value within a preset time period. The humidified gas comprises gas introduced from the outside by fan 3 that has undergone heat exchange with cooler 4 and has been cooled. The humidified gas then leaves cooler 4 and enters refrigerating chamber 1, humidifying refrigerating chamber 1.

[0073] When the refrigeration is about to end, the first detection device can start to detect the humidity state of the refrigerating chamber 1 and / or the temperature state of the humidified gas entering the refrigerating chamber 1. At this time, the temperature in the refrigerating chamber 1 is at the lowest value in the refrigeration operation cycle, so as to more accurately evaluate the storage conditions of fruits and vegetables in the refrigerating chamber 1.

[0074] When the humidity in the refrigerating chamber 1 is lower than a preset humidity, the fan 3 may be turned on to absorb air from the outside so as to increase the humidity in the refrigerating chamber 1 .

[0075] The first detection device 8 detects the temperature of the humidified gas so as to understand the condition of the gas after being cooled by the surface cooler 4 .

[0076] When the temperature of the humidified gas is greater than the second preset temperature, the speed of the fan 3 may be increased, and when the temperature of the humidified gas is less than the third preset temperature, the speed of the fan 3 may be reduced. The third preset temperature is lower than the second preset temperature.

[0077] In this embodiment, by setting up a first detection device, the humidity state and / or the temperature state of the humidified gas in the refrigerating chamber 1 can be accurately obtained, so that when the humidity in the refrigerating chamber 1 is lower than a preset value, the fan 3 is turned on to introduce outside air to humidify the refrigerating chamber 1, thereby providing a reliable temperature and humidity environment for the items stored in the refrigerating chamber 1.

[0078] By detecting the temperature of the humidified gas, the temperature of the humidified gas entering the refrigerating chamber 1 can be monitored and adjusted in real time according to the temperature, so as to provide a stable and suitable storage environment for the items stored in the refrigerating chamber 1 and prolong the freshness of the stored items.

[0079] In some embodiments, the refrigerator further includes a second detection device configured to obtain the temperature of the surface cooler 4 .

[0080] When the temperature of the surface cooler 4 is less than or equal to the first preset temperature, the fan 3 is turned on to absorb gas from the outside, and / or when the temperature of the surface cooler 4 is greater than the first preset temperature, the surface cooler 4 and the refrigerated air duct assembly 2 are waited for heat exchange and cooling, and the fan 3 is turned on to absorb gas from the outside until the temperature of the surface cooler 4 is less than or equal to the first preset temperature.

[0081] When the humidity of the refrigerating chamber 1 is lower than the preset humidity, the refrigerating chamber 1 needs to be humidified. At this time, by detecting the temperature of the surface cooler 4, it is determined whether the surface cooler 4 has the ability to cool the gas inhaled from the outside.

[0082] When the temperature of the cooler 4 is less than or equal to the first preset temperature, the cooler 4 has sufficient cooling capacity to immediately cool the air drawn in from the outside. At this time, the fan 3 can be directly turned on to draw in outside air for convective heat exchange with the cooler 4.

[0083] When the temperature of the cooler 4 is higher than the first preset temperature, the cooler 4 is too hot to immediately cool the air drawn in from the outside. In this case, it is necessary to wait for the refrigerated air duct assembly to provide sufficient cooling capacity to the cooler 4, so that the temperature of the cooler 4 is lower than or equal to the first preset temperature, before turning on the fan 3.

[0084] In this embodiment, the temperature of the surface cooler 4 is obtained so that the opening and closing of the fan 3 can be controlled based on the relationship between the temperature of the surface cooler 4 and the first preset temperature, and the fan 3 is turned on only after the temperature of the surface cooler 4 reaches the preset value. This can make the temperature and humidity of the gas entering the cold storage room 1 more stable, avoid drastic fluctuations in temperature and humidity, and accurately control the time for cooling the external air, optimize the dehumidification efficiency, and reduce additional energy consumption.

[0085] refer to Figure 1 , the following are some refrigerator operation methods in some embodiments:

[0086] During actual operation, when the refrigeration is about to end, for example, about half a minute before the end of refrigeration, the first detection device is used to detect the status of the refrigeration chamber 1. When the first detection device detects that the humidity of the refrigeration chamber 1 is less than the preset humidity, the humidification operation can be started: first, the temperature of the cooler 4 is detected to see if it has reached the first preset temperature. If the temperature of the cooler 4 is less than or equal to the first preset temperature, the fan 3 is directly turned on to introduce outside air and perform convection heat exchange with the cooler 4. If the temperature of the cooler 4 is greater than the first preset temperature, it is necessary to wait until the refrigerated air supply brings enough cooling capacity to the cooler 4, so that the temperature of the cooler 4 is less than or equal to the first preset temperature, and then the fan 3 is turned on.

[0087] After the outside air is cooled, condensed and passes through the filter element 6, the first detection device will detect its temperature. If the temperature of the gas is lower than the third preset temperature, the speed of the fan 3 will be reduced, reducing the heat exchange between the outside air and the surface cooler 4, thereby reducing the cooling capacity, causing the temperature of the gas to rise above the third preset temperature, and also causing the water vapor content in the gas to increase.

[0088] If the temperature is higher than the second preset temperature, the speed of fan 3 is increased to enhance heat exchange with cooler 4, thereby increasing the cooling capacity. The angle of flow guide 5 is adjusted to allow convective heat exchange between the air and the surfaces of cooler 4 at different heights. This prevents condensed water from dripping from the surface of cooler 4 and interfering with heat exchange with the air below. Ultimately, the air temperature is lowered to the average of the second and third preset temperatures. Subsequently, the speed of fan 3 is maintained while the air temperature is monitored in real time. If the temperature deviates from the preset range, the above steps are repeated until the humidity in refrigerated compartment 1 reaches the preset humidity.

[0089] Thus far, various embodiments of the present disclosure have been described in detail. To avoid obscuring the concept of the present disclosure, some details known in the art have not been described. Based on the above description, those skilled in the art can fully understand how to implement the technical solutions disclosed herein.

[0090] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art will understand that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced with equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A refrigerator, characterized in that: include: A box body, wherein a refrigeration chamber (1) is provided in the box body; A refrigeration air duct assembly (2) is arranged in the box; a fan (3), disposed in the box, configured to introduce gas from the outside and move the gas toward the refrigerating chamber (1); and A surface cooler (4) is arranged in the box, close to the refrigeration duct assembly (2), and located on the path of the gas moving from the fan (3) to the refrigeration chamber (1). The surface cooler (4) is configured to obtain cold energy from the refrigeration duct assembly (2) and exchange heat with the gas, so that the gas humidifies the refrigeration chamber (1).

2. The refrigerator according to claim 1, wherein Also includes: The flow guide (5) is arranged near the air outlet of the fan (3) and is configured to guide the gas to move toward the surface cooler (4).

3. The refrigerator according to claim 2, wherein: The flow guide (5) is rotatably connected to the refrigerating chamber (1) to guide the gas to move to different positions of the working surface of the surface cooler (4).

4. The refrigerator according to claim 1, wherein Also includes: a filter element (6), arranged on a movement path of the gas entering the refrigerating chamber (1) and communicating with the refrigerating chamber (1); Wherein, the filter element (6) has a plurality of pores.

5. The refrigerator according to claim 4, wherein: The refrigeration chamber (1) includes one or more refrigeration drawers (11); Wherein, the filter element (6) is arranged on the wall surface of the refrigerated drawer (11) close to the surface cooler (4).

6. The refrigerator according to claim 1, wherein The surface cooler (4) extends along the extension direction of the refrigeration air duct assembly (2).

7. The refrigerator according to claim 1, wherein Also includes: A water collecting tank (7) is provided near the fan (3) and is configured to collect condensed water formed on the working surface of the surface cooler (4).

8. The refrigerator according to claim 3, wherein The rotation speed of the fan (3) is adjustable.

9. The refrigerator according to claim 3 or 8, characterized in that: Also includes: a first detection device configured to detect the humidity of the refrigerating chamber (1) and / or the temperature of the humidified gas entering the refrigerating chamber (1); The humidified gas includes gas introduced from the outside by the fan (3) and heat-exchanged with the surface cooler (4).

10. The refrigerator according to claim 9, wherein Also includes: The second detection device is configured to detect the temperature of the surface cooler (4).

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