Air-cooled refrigerator

Abstract

This invention provides a frost-cooled refrigerator, including a vortex fan, a refrigerator body, and an evaporator. The vortex fan includes an air inlet, a first air outlet, a second air outlet, a baffle component, and a driving device. The driving device drives the baffle component to close one of the first and second air outlets. The refrigerator body defines a cooling compartment, a storage compartment, a cooling air duct, a return air duct, and a defrost air duct. The cooling compartment, the air inlet, the first air outlet, the cooling air duct, the storage compartment, and the return air duct are sequentially connected end-to-end to form a cooling circulation air path; the cooling compartment, the air inlet, the second air outlet, and the defrost air duct are sequentially connected end-to-end to form a defrost circulation air path. The evaporator is disposed within the cooling compartment. This frost-cooled refrigerator improves the defrosting effect of the evaporator.

Description

Technical Field

[0001] This invention belongs to the field of refrigeration equipment technology, and specifically provides an air-cooled refrigerator. Background Technology

[0002] A frost-free refrigerator has a sequentially connected cooling compartment, cooling air duct, storage compartment, and return air duct. It also features an evaporator and a vortex fan. The evaporator is located within the cooling compartment to cool the air inside. The vortex fan drives the air to circulate along the path of the cooling compartment, cooling air duct, storage compartment, and return air duct, transporting the air cooled by the evaporator from the cooling compartment to the storage compartment to cool the stored items (including food, medicine, beverages, biological reagents, bacteria colonies, chemical reagents, etc.).

[0003] During use, frost-free refrigerators often have high humidity levels inside because the stored items usually contain food with high moisture content, and moisture from the outside can also enter the storage compartment. This moisture then cools the evaporator and forms frost. Excessive frost on the evaporator can affect its cooling efficiency, so regular defrosting of the evaporator is necessary.

[0004] In existing technologies, when defrosting the evaporator, the vortex fan is first stopped, and then the evaporator is heated by an electric heating device. As the heat is gradually transferred to the entire evaporator, the frost on the evaporator surface is gradually melted away. This defrosting method is not only inefficient, but also easily leads to hot air from the refrigeration compartment and / or refrigeration duct entering the storage compartment, affecting the freezing, refrigeration, and preservation effects of the storage compartment. Summary of the Invention

[0005] One objective of this invention is to solve the problem of low defrosting efficiency in existing air-cooled refrigerators when defrosting the evaporator.

[0006] To achieve the above objectives, the present invention provides a frost-cooled refrigerator, comprising:

[0007] A vortex fan includes an air inlet, a first air outlet, a second air outlet, a windbreak component, and a drive device. The drive device is used to drive the windbreak component to close one of the first air outlet and the second air outlet.

[0008] The refrigerator body includes a cooling compartment, a storage compartment, a cooling air duct, a return air duct, and a defrost air duct. The cooling compartment, the air inlet, the first air outlet, the cooling air duct, the storage compartment, and the return air duct are connected end to end in sequence to form a cooling circulation air path. The cooling compartment, the air inlet, the second air outlet, and the defrost air duct are connected end to end in sequence to form a defrost circulation air path.

[0009] An evaporator is located in the refrigeration chamber.

[0010] Optionally, both the first air outlet and the second air outlet are disposed on the circumferential sidewall of the casing of the vortex fan; the wind-blocking component includes an arc-shaped baffle, which is slidably connected to the circumferential sidewall, so that the arc-shaped baffle slides along the circumference of the casing to a first position to close the first air outlet, and slides along the circumference of the casing to a second position to close the second air outlet.

[0011] Optionally, the windbreak component further includes a rack disposed on the outer side of the arc-shaped baffle; the driving device includes a drive motor mounted on the housing and a gear drivenly connected to the drive motor, the gear meshing with the rack so that the vortex fan drives the arc-shaped baffle to move through the drive motor.

[0012] Optionally, the vortex fan further includes a first position detection sensor and a second position detection sensor.

[0013] The first position detection sensor is used to detect whether the arc-shaped baffle has moved to the first position; the second position detection sensor is used to detect whether the arc-shaped baffle has moved to the second position.

[0014] Optionally, both the first position detection sensor and the second position detection sensor are microswitches.

[0015] Optionally, the drive device further includes a spring, the two ends of which are respectively connected to the housing and the windproof member; the spring is used to move the arc-shaped baffle to and hold it in the second position that closes the second air outlet.

[0016] Optionally, the windproof component is provided with a locking structure, and the housing is provided with a locking engagement structure. The locking structure and the locking engagement structure are locked together so that the arc-shaped baffle is kept in the first position that closes the first air outlet.

[0017] Optionally, the air-cooled refrigerator is configured such that, during the movement of the arc-shaped baffle from the second position to the first position, when the current of the drive motor is greater than a set threshold, it is determined that the engaging structure and the engaging engagement structure are engaged together, causing the drive motor to stop rotating; the air-cooled refrigerator is further configured such that, during the movement of the arc-shaped baffle from the first position to the second position, the drive motor rotates in the opposite direction for a preset time, so that the engaging structure disengages from the engaging engagement structure under the action of the drive motor and the spring.

[0018] Optionally, the cooling air duct is inverted U-shaped, and the defrosting air duct is located inside the cooling air duct.

[0019] Optionally, the refrigerator body includes an air duct cover, and both the cooling air duct and the defrosting air duct are formed on the air duct cover; and / or, the air-cooled refrigerator further includes a heating device, which is disposed on the bottom side of the evaporator.

[0020] Based on the foregoing description, those skilled in the art will understand that in the aforementioned technical solution of the present invention, by configuring a first air outlet, a second air outlet, a baffle component, and a driving device for the vortex fan, and by having the driving device drive the baffle component to close one of the first and second air outlets, the vortex fan can only expel air through one of the first and second air outlets. By sequentially connecting the refrigeration chamber, air inlet, first air outlet, refrigeration duct, storage chamber, and return air duct to form a refrigeration circulation air path; and by sequentially connecting the refrigeration chamber, air inlet, second air outlet, and defrost duct to form a defrost circulation air path, the vortex fan can close the second air outlet through the baffle component, allowing air to flow within the refrigeration circulation air path, thereby enabling the air-cooled refrigerator to operate in refrigeration mode; and by enabling the vortex fan to close the first air outlet through the baffle component, allowing air to flow within the defrost circulation air path, thereby enabling the air-cooled refrigerator to operate in defrost mode. In short, a vortex fan circulates the air flowing through the evaporator without passing through the storage chamber, continuously blowing air onto the evaporator and ensuring even heating of all parts. Compared to the evaporator transferring heat throughout its structure, this allows for more uniform and rapid heating, quickly removing condensation and improving defrosting efficiency. Simultaneously, the flowing air also helps remove condensation and water mixtures from the evaporator, further enhancing defrosting performance.

[0021] Furthermore, a spring positioned between the housing and the arc-shaped baffle allows the baffle to move and remain in a second position, closing the second air outlet. The spring force increases as the baffle moves from the second position to the first position, increasing the load on the drive motor and consequently the input current. Therefore, the drive motor current varies depending on the baffle's position, allowing for accurate detection of the current when the baffle is in the first position. Based on this, the baffle's position can be determined by detecting the drive motor current as it moves from the second to the first position. Specifically, when the drive motor current exceeds a set threshold, the baffle is considered to have reached the first position, and the drive motor stops rotating. This approach effectively reduces production costs compared to using sensors on the eddy current motor to detect the baffle's position.

[0022] Furthermore, the combination of the interlocking structure and the interlocking engagement structure keeps the arc-shaped baffle in the first position that closes the first air outlet, and also prevents the arc-shaped baffle from being driven back to the second position by the spring when the drive motor is powered off, thus ensuring the normal operation of the air-cooled refrigerator in defrost mode.

[0023] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solution of the present invention, some embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that the same reference numerals may indicate the same or similar parts or components in different drawings; the drawings of the present invention are not necessarily drawn to scale.

[0025] In the attached image:

[0026] Figure 1 This is a schematic diagram of the principle (cooling mode) of a frost-cooled refrigerator in some embodiments of the present invention;

[0027] Figure 2 This is a schematic diagram of the principle of a frost-free refrigerator in some embodiments of the present invention (defrosting mode);

[0028] Figure 3 This is a first isometric view of the duct cover portion in some embodiments of the present invention;

[0029] Figure 4 This is a second isometric view of the duct cover portion in some embodiments of the present invention;

[0030] Figure 5 It is along Figure 4 A cross-sectional view along the AA direction;

[0031] Figure 6 These are isometric views of the vortex fan in some embodiments of the present invention;

[0032] Figure 7 yes Figure 6 Cross-sectional view of a medium-sized vortex fan along the BB direction;

[0033] Figure 8 This is a schematic diagram of the windbreak component of the vortex fan in the second position in some embodiments of the present invention;

[0034] Figure 9 This is a schematic diagram of the windbreak component of the vortex fan in the first position in some embodiments of the present invention. Detailed Implementation

[0035] Those skilled in the art should understand that the embodiments described below are merely a part of the embodiments of the present invention, and not all of the embodiments of the present invention. These partial embodiments are intended to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by those skilled in the art without creative effort should still fall within the scope of protection of the present invention.

[0036] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can also refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] Furthermore, it should be noted that, for ease of description and to enable those skilled in the art to quickly understand the technical solution of this invention, the following description only focuses on technical features that are strongly related (directly or indirectly related) to the technical problem and / or concept to be solved by this invention. Technical features that are less related to the technical problem and / or concept to be solved by this invention will not be described in detail. Since such less related technical features are common knowledge in the field, the omission of such less related features will not result in insufficient disclosure of this invention.

[0039] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, the air-cooled refrigerator includes a refrigerator body 1, an evaporator 2, a vortex fan 3, and a heating device 4.

[0040] Continue reading Figure 1 and Figure 2 The refrigerator body 1 includes a cooling compartment 101, a storage compartment 102, a cooling air duct 103, a return air duct 104, and a defrost air duct 105. The cooling compartment 101, cooling air duct 103, storage compartment 102, and return air duct 104 are sequentially connected end-to-end, thus forming a cooling circulation air path. The two ends of the defrost air duct 105 are connected to the cooling compartment 101, thus forming a defrost circulation air path. Furthermore, the cooling compartment 101 and the cooling air duct 103 are connected by a vortex fan 3, meaning the vortex fan 3 constitutes part of the cooling circulation air path. Similarly, the cooling compartment 101 and the defrost air duct 105 are connected by the vortex fan 3, meaning the vortex fan 3 also constitutes part of the defrost circulation air path.

[0041] like Figure 1 As shown, when the air-cooled refrigerator is running in cooling mode, the air circulates in the cooling cycle air path. The air flow path is: cooling chamber 101 → vortex fan 3 → cooling air duct 103 → storage chamber 102 → return air duct 104 → cooling chamber 101.

[0042] like Figure 2 As shown, when the air-cooled refrigerator is running in defrost mode, the air circulates in the defrost circulation air path. The air flow path is: refrigeration chamber 101 → vortex fan 3 → defrost air duct 105 → refrigeration chamber 101.

[0043] Continue reading Figure 1 and Figure 2 The refrigerator body 1 includes an air duct cover 110, and a cooling air duct 103 and a defrosting air duct 105 are all formed on the air duct cover 110.

[0044] like Figures 1 to 5As shown, the first exhaust port 1031 of the refrigeration duct 103 is located on the front side of the duct cover 110 so that the refrigeration duct 103 blows cold air into the storage compartment 102 through the first exhaust port 1031. The second exhaust port 1051 of the defrost duct 105 is located on the rear side of the duct cover 110 so that the defrost duct 105 delivers air into the refrigeration compartment 101 through the second exhaust port 1051.

[0045] like Figure 5 As shown, in some embodiments of the present invention, the cooling duct 103 is inverted U-shaped (or n-shaped), and the defrosting duct 105 is located inside the cooling duct 103, so that the flow cross-sectional area of ​​the cooling duct 103 is as large as possible, so as to reduce the air resistance of the cooling duct 103.

[0046] like Figure 1 and Figure 2 As shown, the evaporator 2 is located inside the refrigeration chamber 101. Preferably, the air flowing out from the second exhaust vent 1051 can flow through the evaporator 2 and blow on it. A vortex fan 3 is located above the evaporator 2 to drive the airflow, so that the air flows in the refrigeration circulation air path or the defrost circulation air path. A heating device 4 is located on the bottom side of the evaporator 2 to heat the evaporator 2.

[0047] The heating device 4 is preferably an electric heating device. In addition, those skilled in the art can also configure the heating device 4 as any other feasible heating device as needed, such as a condenser located on the bottom side of the evaporator 2, or use part or all of the evaporator 2 as a condenser during the defrosting process of the evaporator 2.

[0048] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the vortex fan 3 can be optionally installed on the duct cover 110, and the vortex fan 3 includes an air inlet 301, a first air outlet 302, and a second air outlet 303. The vortex fan 3 is connected to the cooling chamber 101 through the air inlet 301, to the cooling duct 103 through the first air outlet 302, and to the defrosting duct 105 through the second air outlet 303. In other words, the vortex fan 3 draws air from the cooling chamber 101 through the air inlet 301, delivers the drawn air to the cooling duct 103 through the first air outlet 302, and delivers the drawn air to the defrosting duct 105 through the second air outlet 303.

[0049] like Figures 6 to 9As shown, the vortex fan 3 also includes a housing 31, an impeller (not shown), a first motor 32, a baffle member 33, and a drive device 34. The housing 31 is fixedly connected to the duct cover 110, and the impeller is installed inside the housing 31. The housing of the first motor 32 is fixedly connected to the housing 31, and the shaft of the first motor 32 is coaxially fixedly connected to the impeller. The baffle member 33 is slidably mounted on the housing 31, and the drive device 34 is used to drive the baffle member 33 to slide.

[0050] like Figure 6 and Figure 7 As shown, the air inlet 301, the first air outlet 302 and the second air outlet 303 are all provided on the housing 31, and the first air outlet 302 and the second air outlet 303 are both provided on the circumferential side wall of the housing 31.

[0051] like Figures 7 to 9 As shown, the windbreak component 33 includes an arc-shaped baffle 331 and a rack 332 disposed on the outer side of the arc-shaped baffle 331. The arc-shaped baffle 331 is slidably connected to the circumferential sidewall of the housing 31, so that the arc-shaped baffle 331 slides along the circumference of the housing 31 to a first position that closes the first air outlet 302 (e.g., ...). Figure 9 As shown), and to slide the arc-shaped baffle 331 along the circumference of the housing 31 to the second position that closes the second air outlet 303 (as shown). Figure 8 (As shown). Preferably, a strip-shaped hole (not marked in the figure) is provided on the side wall of the circumferential side wall of the housing 31. The arc-shaped baffle 331 is located on the inner side of the housing 31, and the rack 332 passes through the strip-shaped hole on the housing 31 so that the teeth of the rack 332 are exposed on the outer side of the housing 31.

[0052] Furthermore, in this invention, the arc-shaped baffle 331 and the housing 31 can be slidably connected together in any feasible manner. As an example, a groove extending in the sliding direction of the arc-shaped baffle 331 is provided on the housing 31, allowing the two sides of the arc-shaped baffle 331 to be embedded in the groove. As an example, a stop member is fitted onto the rack 332 exposed on the outside of the housing 31, thereby restricting the radial movement of the arc-shaped baffle 331, restricting the axial movement of the arc-shaped baffle 331 through the engagement of the rack 332 with the slotted hole on the housing 31, and allowing the arc-shaped baffle 331 to slide circumferentially along the housing 31.

[0053] Furthermore, in other embodiments of the present invention, those skilled in the art may, as needed, arrange the arc-shaped baffle 331 on the outside of the housing 31.

[0054] like Figure 6 and Figure 7As shown, the drive device 34 includes a second motor 341 as a drive motor and a gear 342 drivenly connected to the second motor 341. The second motor 341 is mounted on the housing 31, and the gear 342 meshes with the rack 332 so that the vortex fan 3 drives the arc-shaped baffle 331 to move through the second motor 341.

[0055] like Figure 8 and Figure 9 As shown, the drive device 34 also includes a spring 35, which is disposed between the housing 31 and the wind deflector 33, and both ends of the spring 35 are connected to the housing 31 and the wind deflector 33, respectively. Preferably, the spring 35 is a tension spring, and both ends of the spring 35 are hooked to the housing 31 and the rack 332, respectively. In this invention, the spring 35 is used to move the arc-shaped baffle 331 to and maintain it in a second position that closes the second air outlet 303 (e.g., Figure 8 As shown), so that the air driven by the vortex fan 3 circulates within the refrigeration cycle air path (as shown). Figure 1 (As shown).

[0056] Furthermore, in some embodiments of the present invention, when the second motor 341 rotates forward, it can provide driving force to the windbreak member 33 through the meshing between the gear 342 and the rack 332, so as to overcome the elastic force of the spring 35 and move the arc-shaped baffle 331 to the first position that closes the first air outlet 302 (e.g., Figure 9 As shown), this causes the air driven by the vortex fan 3 to circulate within the defrosting circulation path (as shown). Figure 2 (As shown).

[0057] Based on this, those skilled in the art will understand that, when the second motor 341 drives the windshield member 33 from... Figure 8 The second position shown is moved to Figure 9 During the process shown in the first position, spring 343 is gradually stretched, and the tension of spring 343 increases. To overcome the tension of spring 343, the torque provided by the second motor 341 also increases. To increase the torque of the second motor 341, the current of the second motor 341 also increases. When the windbreak component 33 moves to... Figure 9 In the first position shown, the current value of the second motor 341 reaches its maximum. This current value is recorded as the set threshold; or a value slightly greater than this current value is recorded as the set threshold, for example, a value k times the current value is recorded as the preset threshold. Where k > 1.

[0058] Based on the above principle, the air-cooled refrigerator can be configured such that, during the process of the arc-shaped baffle 331 moving from the second position to the first position, when the current of the second motor 331 is greater than a set threshold, it is determined that the arc-shaped baffle 331 has moved to the first position, and the second motor 331 stops rotating.

[0059] Those skilled in the art will understand that during defrosting in a frost-free refrigerator, in order to prevent the wind deflector 33 from returning to its original position under the action of the spring 343... Figure 8 In the second position shown, the second motor 331 needs to be continuously energized so that the second motor 331 provides the wind deflector 33 with a force that overcomes the spring 343.

[0060] Keeping the stopped second motor 331 continuously energized could potentially burn it out due to the current. Therefore, in some embodiments of the present invention, such as... Figure 8 and Figure 9 As shown, the windbreak component 33 is provided with a locking structure 333, and the housing 31 is provided with a locking engagement structure 311. The locking structure 333 and the locking engagement structure 311 are locked together so that the arc-shaped baffle 331 is held in the first position of closing the first air outlet 302 (e.g., Figure 9 (As shown).

[0061] like Figure 8 and Figure 9 As shown, the engaging structure 333 is a protruding structure, and the engaging mating structure 311 is a groove structure. The length of the groove structure is greater than the length of the protruding structure, so that the protruding structure can slide within the groove structure.

[0062] In addition, those skilled in the art may, as needed, configure the engaging structure 333 as a groove structure and the engaging mating structure 311 as a protruding structure; or, configure both the engaging structure 333 and the engaging mating structure 311 as protruding structures.

[0063] Therefore, during the movement of the arc-shaped baffle 331 from the second position to the first position, when the current of the second motor 331 exceeds a set threshold, it is determined that the engaging structure 333 and the engaging engagement structure 311 have engaged together, that is, it is determined that the arc-shaped baffle 331 has moved to the first position, causing the second motor 331 to stop rotating and de-energize. At this time, because the engaging structure 333 and the engaging engagement structure 311 can overcome the elastic force of the spring 343, the windbreak component 33 will not return to its original position. Figure 8 The second position shown.

[0064] Furthermore, when the arc-shaped baffle 331 needs to move from the first position (such as...) Figure 9 (As shown) Move to the second position (as shown) Figure 8 When (as shown), the second motor 341 is energized in reverse, causing it to rotate in the opposite direction for a preset time (e.g., 1 second, 2 seconds, 3 seconds, or any other duration), so that the engaging structure 333 disengages from the engaging engagement structure 311 under the action of the second motor 341 and the spring 343. Then, the second motor 341 is de-energized again, causing the windshield member 33 to return to its original position as the spring 343 returns to its original position. Figure 8 The second position shown.

[0065] In short, in some embodiments of the present invention, the windbreak component 33, driven by the second motor 341, is capable of... Figure 8 The second position shown is moved to Figure 9 The first position is shown, and is maintained under the action of the engaging structure 333 and the engaging engagement structure 311. Figure 9 The first position shown is used to close the first air outlet 302 of the vortex fan 3, allowing air to flow as... Figure 2 The airflow flows in the defrosting circulation path indicated by the middle arrow. Under the combined action of the second motor 341 and the spring 343, the windbreak component 33 can disengage the engaging structure 333 from the engaging engagement structure 311, and under the action of the spring 343, it can move and remain in place. Figure 8 The second position shown is used to close the second air outlet 303 of the vortex fan 3, allowing air to flow as... Figure 1 The airflow flows in the refrigeration cycle path indicated by the middle arrow.

[0066] Based on the foregoing description, those skilled in the art will understand that the present invention, by configuring a first air outlet 302, a second air outlet 303, a baffle member 33, and a drive device 34 for the vortex fan 3, enables the air-cooled refrigerator to close one of the first air outlet 302 and the second air outlet 303 via the drive device 34 driving the baffle member 33, thereby allowing air to flow in the refrigeration circulation path or the defrost circulation path. When the air flows in the defrost circulation path, it continuously blows on the evaporator 2, causing all parts of the evaporator 2 to be evenly heated by the heating device 4. Compared to the evaporator 2 transferring heat to its entire body through its own heat transfer, the evaporator 2 can be heated evenly and quickly, rapidly removing the frost on the evaporator 2, thus improving the defrosting effect of the evaporator 2. At the same time, the flowing air can also promote the removal of frost and frost water mixture from the evaporator, further improving the defrosting effect of the evaporator 2.

[0067] Furthermore, although not shown in the figures, in other embodiments of the present invention, those skilled in the art may omit the engagement structure 333, engagement mating structure 311 and spring 343 as needed, and set the second motor 341 as a stepper motor.

[0068] Furthermore, although not shown in the figures, in some embodiments of the present invention, those skilled in the art can omit the engagement structure 333, engagement mating structure 311, and spring 343 as needed. The vortex fan 3 also includes a first position detection sensor and a second position detection sensor. The first position detection sensor detects whether the arc-shaped baffle 331 has moved to a first position, and the second position detection sensor detects whether the arc-shaped baffle 331 has moved to a second position. Exemplarily, both the first and second position detection sensors are microswitches mounted on the housing 31 and triggerable by the arc-shaped baffle 331. When the arc-shaped baffle 331 moves from... Figure 8 The second position shown is moved to Figure 9 During the process of moving to the first position shown, when the first position detection sensor is triggered, it is determined that the arc-shaped baffle 331 has moved to the first position, causing the second motor 341 to be de-energized. Similarly, when the arc-shaped baffle 331 moves from... Figure 9 The first position shown is moved to Figure 8 During the process of the second position shown, when the second position detection sensor is triggered, it is determined that the arc-shaped baffle 331 has moved to the second position, causing the second motor 341 to be de-energized.

[0069] The technical solutions of the present invention have been described in conjunction with several embodiments above. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Without departing from the technical principles of the present invention, those skilled in the art can disassemble and combine the technical solutions in the above embodiments, and can also make equivalent changes or substitutions to related technical features. Any changes, equivalent substitutions, improvements, etc., made within the technical concept and / or technical principles of the present invention will fall within the scope of protection of the present invention.

Claims

1.A refrigerator comprising: a vortex fan comprising an air inlet, a first air outlet, a second air outlet, a baffle member, and a driving device for driving the baffle member to close one of the first air outlet and the second air outlet; the driving device comprising a driving motor for driving the baffle member to move to a first position for closing the first air outlet, and a spring for moving and keeping the baffle member to a second position for closing the second air outlet; a clamping structure provided on the baffle member and a clamping matching structure provided on a housing of the vortex fan, the clamping structure and the clamping matching structure being clamped together to keep the baffle member in the first position for closing the first air outlet; a refrigerator body defining a refrigeration chamber, a storage chamber, a refrigeration air duct, an air return channel, and a defrosting air duct, the refrigeration chamber, the air inlet, the first air outlet, the refrigeration air duct, the storage chamber, and the air return channel being sequentially and continuously communicated to form a refrigeration circulating air path; the refrigeration chamber, the air inlet, the second air outlet, and the defrosting air duct being sequentially and continuously communicated to form a defrosting circulating air path; and an evaporator provided in the refrigeration chamber. 2.The refrigerator according to claim 1, wherein the first air outlet and the second air outlet are both provided on a circumferential side wall of the housing of the vortex fan; the baffle member comprises an arc-shaped baffle plate, the arc-shaped baffle plate being slidingly connected with the circumferential side wall to slide along the circumference of the housing to the first position for closing the first air outlet, and to slide along the circumference of the housing to the second position for closing the second air outlet. 3.The refrigerator according to claim 2, wherein the baffle member further comprises a rack provided outside the arc-shaped baffle plate; the driving motor is mounted to the housing; the driving device comprises a gear in driving connection with the driving motor, the gear being engaged with the rack to drive the arc-shaped baffle plate to move by the driving motor. 4.The refrigerator according to claim 3, wherein two ends of the spring are respectively connected with the housing and the baffle member. 5.The refrigerator according to claim 4, wherein ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The air-cooled refrigerator is further configured to reverse the rotation of the driving motor for a preset time during the movement of the arc-shaped baffle from the first position to the second position, so that the clamping structure is disengaged from the clamping fitting structure under the action of the driving motor and the spring. 6.The air-cooled refrigerator according to any one of claims 1-5, wherein, The refrigeration air duct is inverted U-shaped, and the defrosting air duct is located on the inner side of the refrigeration air duct. 7.The air-cooled refrigerator according to any one of claims 1-5, wherein, The refrigerator body comprises an air duct cover plate, and the refrigeration air duct and the defrosting air duct are both formed on the air duct cover plate. 8.The air-cooled refrigerator according to any one of claims 1-5, wherein, The air-cooled refrigerator further comprises a heating device, and the heating device is arranged on the bottom side of the evaporator.

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