CN115962602A

CN115962602A - Air-cooled refrigerator

Info

Publication number: CN115962602A
Application number: CN202111182746.5A
Authority: CN
Inventors: 王少一; 崔展鹏; 陈建全
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2023-04-14
Also published as: WO2023061210A1

Abstract

The invention provides an air-cooled refrigerator which comprises a vortex fan, a refrigerator body and an evaporator. The vortex fan comprises an air inlet, a first air outlet, a second air outlet, a wind shielding component and a driving device, wherein the driving device is used for driving the wind shielding component to close one of the first air outlet and the second air outlet. The refrigerator body is limited with a refrigeration chamber, a storage chamber, a refrigeration air duct, a return air channel and a defrosting air duct, wherein the refrigeration chamber, the air inlet, the first air outlet, the refrigeration air duct, the storage chamber and the return air channel are sequentially communicated end to form a refrigeration circulation air path; the refrigeration chamber, the air inlet, the second air outlet and the defrosting air channel are sequentially communicated end to form a defrosting circulation air path. The evaporator is arranged in the refrigerating chamber. The air-cooled refrigerator provided by the invention improves the defrosting effect of the evaporator.

Description

Air-cooled refrigerator

Technical Field

The invention belongs to the technical field of refrigeration equipment, and particularly provides an air-cooled refrigerator.

Background

The air-cooled refrigerator is provided with a refrigerating chamber, a refrigerating air duct, a storage chamber and an air return channel which are sequentially communicated. The air-cooled refrigerator also has an evaporator disposed in the refrigerating chamber to cool air in the refrigerating chamber, and a vortex fan. The vortex fan is used for driving air to circularly flow along the paths of the refrigerating chamber, the refrigerating air duct, the storage chamber and the return air channel so as to convey air cooled by the evaporator in the refrigerating chamber into the storage chamber and cool stored objects (including food materials, medicines, wine, biological reagents, bacterial colonies, chemical reagents and the like) in the storage chamber.

In the using process of the air-cooled refrigerator, the stored objects in the storage chamber often comprise food materials with high moisture content, and the outside water vapor can enter the storage chamber, so that the humidity in the storage chamber is high, and the water vapor can form frost attached to the evaporator when the evaporator is cooled. When the amount of frost on the evaporator is large, the cooling effect of the evaporator on the ambient air is affected, and therefore, the evaporator needs to be periodically defrosted.

In the prior art, when the evaporator is defrosted, the vortex fan is stopped firstly, and then the evaporator is heated by the electric heating device. As heat is gradually transferred to the entire evaporator, frost on the surface of the evaporator is gradually melted away. The defrosting mode has low defrosting efficiency, and hot air in the refrigerating chamber and/or the refrigerating air duct easily enters the storage chamber to influence the freezing, refrigerating and fresh-keeping effects of the storage chamber.

Disclosure of Invention

An object of the present invention is to solve the problem of low defrosting efficiency when an evaporator is defrosted in the conventional air-cooled refrigerator.

To achieve the above object, the present invention provides an air-cooled refrigerator comprising:

the vortex fan comprises an air inlet, a first air outlet, a second air outlet, a wind shielding component and a driving device, wherein the driving device is used for driving the wind shielding component to close one of the first air outlet and the second air outlet;

the refrigerator comprises a refrigerator body, a first air outlet, a second air outlet, a refrigerating air channel, a storage chamber, a return air channel and a defrosting air channel, wherein the refrigerator body is limited with a refrigerating chamber, the storage chamber, the refrigerating air channel, the return air channel and the defrosting air channel, and the refrigerating chamber, the air inlet, the first air outlet, the refrigerating air channel, the storage chamber and the return air channel are sequentially communicated end to form a refrigerating circulation air path; the refrigerating chamber, the air inlet, the second air outlet and the defrosting air channel are sequentially communicated end to form a defrosting circulation air path;

an evaporator disposed within the refrigeration compartment.

Optionally, the first air outlet and the second air outlet are both arranged on a circumferential side wall of a casing of the vortex fan; the wind blocking member includes an arc-shaped baffle slidably coupled to the circumferential side wall such that the arc-shaped baffle slides along the circumference of the housing to a first position that closes the first air outlet and slides along the circumference of the housing to a second position that closes the second air outlet.

Optionally, the wind shielding member further comprises a rack disposed outside the cowl; the driving device comprises a driving motor arranged on the shell and a gear in driving connection with the driving motor, and the gear is meshed with the rack so that the vortex fan drives the arc-shaped baffle to move through the driving motor.

Optionally, the vortex fan further comprises a first position detection sensor and a second position detection sensor,

the first position detection sensor is used for detecting whether the arc baffle moves to the first position; the second position detection sensor is configured to detect whether the cowl guard has moved to the second position.

Alternatively, both the first position detection sensor and the second position detection sensor are microswitches.

Optionally, the driving device further comprises a spring, and two ends of the spring are respectively connected with the casing and the wind shielding member; the spring is used for moving the arc-shaped baffle to and keeping the arc-shaped baffle at the second position for closing the second air outlet.

Optionally, a clamping structure is arranged on the wind shielding member, a clamping and matching structure is arranged on the casing, and the clamping structure and the clamping and matching structure are clamped together, so that the arc-shaped baffle is kept at the first position for closing the first wind outlet.

Optionally, the air-cooled refrigerator is configured to determine that the engaging structure and the engaging and matching structure are engaged together to stop the rotation of the driving motor when the current of the driving motor is greater than a set threshold value during the movement of the arc-shaped baffle from the second position to the first position; the air-cooled refrigerator is also configured to enable the driving motor to rotate reversely for a preset time in the process that the arc-shaped baffle plate moves from the first position to the second position, so that the clamping structure is separated from the clamping matching structure under the action of the driving motor and the spring.

Optionally, the refrigeration wind channel is an inverted U-shape, and the defrosting wind channel is located inside the refrigeration wind channel.

Optionally, the refrigerator body includes an air duct cover plate, and the refrigeration air duct and the defrosting air duct are both formed on the air duct cover plate; and/or, the air-cooled refrigerator further includes a heating device disposed at a bottom side of the evaporator.

Based on the foregoing description, it can be understood by those skilled in the art that, in the foregoing technical solution of the present invention, by configuring the first air outlet, the second air outlet, the wind shielding member and the driving device for the vortex fan, and enabling the driving device to drive the wind shielding member to close one of the first air outlet and the second air outlet, the vortex fan can wind air through only one of the first air outlet and the second air outlet. The refrigeration chamber, the air inlet, the first air outlet, the refrigeration air duct, the storage chamber and the return air channel are sequentially communicated end to form a refrigeration circulation air path; the refrigeration chamber, the air inlet, the second air outlet and the defrosting air channel are sequentially communicated end to form a defrosting circulation air path, so that the second air outlet can be closed by the vortex fan through the wind shielding component, air flows in the refrigerating circulation air path, and the air-cooled refrigerator operates in a refrigeration mode; and the vortex fan can seal the first air outlet through the wind shielding component, so that air flows in the defrosting circulation air path, and the air-cooled refrigerator operates in a defrosting mode. In short, the vortex fan can make the air that flows through the evaporimeter not pass through the storeroom and circulate and flow to make the air continuously blow the evaporimeter, make each part of evaporimeter be heated evenly, for making the evaporimeter pass through the mode of self heat transfer with heat transfer to whole body, the evaporimeter can be heated fast evenly, gets rid of the frost on the evaporimeter fast, and then has promoted the defrosting effect of evaporimeter. Meanwhile, flowing air can promote the mixture of frost and frost water to be separated from the evaporator, and the defrosting effect of the evaporator is further improved.

Further, through the spring that sets up between casing and cowl, make cowl can move and keep at the second position that seals the second air outlet for the elasticity of spring can be bigger and bigger at cowl from the second position towards the in-process that the first position removed, thereby makes driving motor's load bigger and bigger, and then makes pivoted driving motor's input current bigger and bigger. Thus, the current to the drive motor is different when the arc is in different positions, and therefore the current to the drive motor when the arc is in the first position can be accurately detected. Based on this, it is possible to determine whether the arc fence has moved to the first position by detecting the current of the drive motor during the movement of the arc fence from the second position toward the first position. Specifically, when the current of the drive motor is greater than a set threshold, the arc baffle is determined to have moved to a first position, at which time the drive motor is stopped. Production costs can be effectively reduced relative to configuring the eddy current motor with a sensor to detect the position of the arc baffle.

And furthermore, the arc-shaped baffle is kept at the first position for sealing the first air outlet through the combination of the clamping structure and the clamping matching structure, and the arc-shaped baffle is prevented from being driven to return to the second position by the spring when the driving motor is powered off, so that the normal operation of the air-cooled refrigerator in a defrosting mode is ensured.

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 thereof taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly explain the technical solution of the present invention, some embodiments of the present invention will be described hereinafter with reference to the accompanying drawings. Those skilled in the art will appreciate that elements or portions of the same reference number are the same or similar in different figures; the drawings of the invention are not necessarily to scale relative to each other.

In the drawings:

FIG. 1 is a schematic illustration of an air-cooled refrigerator (cooling mode) according to some embodiments of the present invention;

FIG. 2 is a schematic view of the principle of an air-cooled refrigerator (defrost mode) in some embodiments of the invention;

FIG. 3 is a schematic view of a first axial effect of a portion of a duct cover in some embodiments of the invention;

FIG. 4 is a schematic representation of a second axial effect of a portion of an air duct cover in some embodiments of the invention;

FIG. 5 isbase:Sub>A sectional view taken along the line A-A in FIG. 4;

FIG. 6 is an isometric view of a vortex fan in some embodiments of the invention;

FIG. 7 is a cross-sectional view of the vortex fan of FIG. 6 taken along the line B-B;

FIG. 8 is a schematic view of a wind blocking member of a vortex fan in a second position in accordance with some embodiments of the invention;

FIG. 9 is a schematic view of a wind blocking member of a vortex fan in a first position in accordance with some embodiments of the invention.

Detailed Description

It should be understood by those skilled in the art that the embodiments described below are only a part of the embodiments of the present invention, not all of the embodiments of the present invention, and the part of the embodiments are intended to explain the technical principles of the present invention and not to limit the scope of the present invention. All other embodiments, which can be obtained by a person skilled in the art based on the embodiments provided by the present invention without inventive effort, shall still fall within the scope of protection of the present invention.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate the directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Furthermore, it should be noted that, for convenience of description and to enable a person skilled in the art to quickly understand the technical solutions of the present invention, only the technical features that are strongly (directly or indirectly) associated with the technical problems and/or technical concepts to be solved by the present invention will be described below, and detailed descriptions of the technical features that are weakly associated with the technical problems and/or technical concepts to be solved by the present invention will not be repeated. Since the technical features with the weak degree of association belong to the common general knowledge in the field, the present invention does not cause insufficient disclosure of the present invention even if the features with the weak degree of association are not described.

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

With continued reference to fig. 1 and 2, the refrigerator body 1 defines a cooling compartment 101, a storage compartment 102, a cooling air duct 103, a return air duct 104, and a defrosting air duct 105. The refrigeration chamber 101, the refrigeration air duct 103, the storage chamber 102 and the return air duct 104 are sequentially communicated end to end, and thus a refrigeration cycle air path is formed. Both ends of the defrosting air duct 105 communicate with the cooling compartment 101, respectively, and thus form a defrosting circulation air path. Further, the cooling compartment 101 and the cooling air duct 103 are communicated with each other by the vortex fan 3, that is, the vortex fan 3 constitutes a part of the cooling circulation air passage. Similarly, refrigerating compartment 101 and defrosting air duct 105 communicate with each other through vortex fan 3, that is, vortex fan 3 constitutes a part of the defrosting circulation air path.

As shown in fig. 1, when the air-cooled refrigerator operates in the cooling mode, air circulates in the cooling circulation air passage through the following paths: the refrigerating compartment 101 → the vortex fan 3 → the cooling duct 103 → the storage compartment 102 → the return air duct 104 → the refrigerating compartment 101.

As shown in fig. 2, when the air-cooled refrigerator operates in the defrosting mode, air circulates in the defrosting circulation air passage, and the air flows through the following paths: cooling compartment 101 → vortex fan 3 → defrosting duct 105 → cooling compartment 101.

With continued reference to fig. 1 and 2, the refrigerator body 1 includes an air duct cover 110, and the cooling air duct 103 and the defrosting air duct 105 are formed on the air duct cover 110.

As shown in fig. 1 to 5, a first exhaust port 1031 of the cooling air duct 103 is provided at a front side of the air duct cover plate 110 so that the cooling air duct 103 blows cool air into the storage chamber 102 through the first exhaust port 1031. The second air outlet 1051 of the defrosting air duct 105 is provided at the rear side of the air duct cover 110 so that the defrosting air duct 105 delivers the air therein to the inside of the cooling compartment 101 through the second air outlet 1051.

As shown in fig. 5, in some embodiments of the present invention, the cooling air duct 103 has an inverted U shape (or n shape), and the defrosting air duct 105 is located inside the cooling air duct 103 so that the flow cross-sectional area of the cooling air duct 103 is as large as possible to reduce the resistance of the cooling air duct 103 to air.

As shown in fig. 1 and 2, the evaporator 2 is provided in the refrigerating compartment 101, and preferably, air flowing out from the second air discharge opening 1051 can flow through the evaporator 2 to blow the evaporator 2. The vortex fan 3 is provided above the evaporator 2, and drives air to flow in the refrigeration cycle air passage or the defrost cycle air passage. A heating device 4 is provided at the bottom side of the evaporator 2 for heating the evaporator 2.

Wherein the heating device 4 is preferably an electric heating device. Furthermore, the skilled person may, if desired, arrange the heating means 4 as any other feasible heating means, such as a condenser arranged at the bottom side of the evaporator 2, or use a part or all of the evaporator 2 as a condenser during defrosting of the evaporator 2.

As shown in fig. 1, 2, 4 and 5, the vortex fan 3 is optionally mounted to the duct cover 110, and the vortex fan 3 includes an intake vent 301, a first outlet vent 302 and a second outlet vent 303. The vortex fan 3 is communicated with the refrigerating chamber 101 through an air inlet 301, communicated with the refrigerating air duct 103 through a first air outlet 302, and communicated with the defrosting air duct 105 through a second air outlet 303. In other words, the vortex fan 3 draws air from the cooling compartment 101 through the air inlet 301, delivers the air drawn through the first air outlet 302 into the cooling air duct 103, and delivers the air drawn through the second air outlet 303 into the defrosting air duct 105.

As shown in fig. 6 to 9, the vortex fan 3 further includes a casing 31, an impeller (not shown in the drawings), a first motor 32, a wind shielding member 33, and a driving device 34. The casing 31 is fixedly connected with the air duct cover plate 110, and the impeller is installed in the casing 31. The housing of the first motor 32 is fixedly connected with the casing 31, and the rotating shaft of the first motor 32 is coaxially and fixedly connected with the impeller. The wind shielding member 33 is slidably mounted on the housing 31, and the driving device 34 is used to drive the wind shielding member 33 to slide.

As shown in fig. 6 and 7, the intake vent 301, the first outlet vent 302, and the second outlet vent 303 are all provided on the casing 31, and the first outlet vent 302 and the second outlet vent 303 are all provided on a circumferential side wall of the casing 31.

As shown in fig. 7 to 9, the wind shielding member 33 includes a cowl 331 and a rack 332 provided outside the cowl 331. The arc-shaped baffle 331 is slidably connected to a circumferential sidewall of the machine shell 31, so that the arc-shaped baffle 331 slides along the circumferential direction of the machine shell 31 to a first position (as shown in fig. 9) for closing the first air outlet 302, and the arc-shaped baffle 331 slides along the circumferential direction of the machine shell 31 to a second position (as shown in fig. 8) for closing the second air outlet 303. Preferably, a strip-shaped hole (not marked in the figure) is provided on a sidewall of the circumferential sidewall of the housing 31. The arc-shaped baffle 331 is located at the inner side of the machine shell 31, and the rack 332 passes through a strip-shaped hole on the machine shell 31, so that the teeth of the rack 332 are exposed at the outer side of the machine shell 31.

Further, in the present invention, the arc-shaped baffle 331 and the housing 31 can be slidably connected together in any feasible manner. As an example, a slide groove extending in the sliding direction of the arc-shaped baffle 331 is provided in the housing 31, and both side edges of the arc-shaped baffle 331 are fitted into the slide groove. As a second example, a stopping member is sleeved outside the rack 332 exposed outside the casing 31 to limit the movement of the arc-shaped baffle 331 in the radial direction by the stopping member, limit the movement of the arc-shaped baffle 331 in the axial direction by the engagement of the rack 332 with the strip-shaped hole on the casing 31, and allow the arc-shaped baffle 331 to slide along the circumferential direction of the casing 31.

In addition, in other embodiments of the present invention, the arc-shaped baffle 331 may be disposed outside the casing 31 as required by those skilled in the art.

As shown in fig. 6 and 7, the driving device 34 includes a second motor 341 as a driving motor and a gear 342 drivingly connected to the second motor 341. Wherein the second motor 341 is installed on the housing 31, and the gear 342 is engaged with the rack 332, so that the vortex fan 3 drives the arc-shaped baffle 331 to move through the second motor 341.

As shown in fig. 8 and 9, the driving device 34 further includes a spring 35, the spring 35 is disposed between the housing 31 and the wind shielding member 33, and both ends of the spring 35 are connected to the housing 31 and the wind shielding member 33, respectively. Preferably, the spring 35 is a tension spring, and both ends of the spring 35 are hooked with the housing 31 and the rack gear 332, respectively. In the present invention, the spring 35 is used to move and hold the arc-shaped baffle 331 to the second position (shown in fig. 8) closing the second outlet 303, so as to circulate the air driven by the vortex fan 3 in the refrigeration cycle air passage (shown in fig. 1).

Further, in some embodiments of the present invention, when the second motor 341 rotates forward, the gear 342 and the rack 332 are engaged to provide a driving force to the wind shielding member 33, so as to overcome the elastic force of the spring 35, and move the arc-shaped baffle 331 to the first position (as shown in fig. 9) for closing the first wind outlet 302, thereby circulating the air driven by the vortex fan 3 in the defrosting circulation path (as shown in fig. 2).

Based on this, as can be understood by those skilled in the art, in the process that the second motor 341 drives the wind shielding member 33 to move from the second position shown in fig. 8 to the first position shown in fig. 9, the spring 343 is gradually extended, and the tension of the spring 343 is also increased. The torque provided by the second motor 341 is also increasing in order to overcome the pulling force of the spring 343. In order to increase the torque of the second electric machine 341, the current of the second electric machine 341 is increased. When the wind shielding member 33 is moved to the first position shown in fig. 9, the current value of the second motor 341 reaches the maximum. Recording the current value as a set threshold; or a value slightly larger than the current value at this time is recorded as a set threshold, for example, a value k times the current value at this time is recorded as a preset threshold. Wherein k is greater than 1.

Based on the above principle, the air-cooling type refrigerator may be configured such that, when the current of the second motor 331 is greater than a set threshold value while the arc-shaped damper 331 moves from the second position toward the first position, it is determined that the arc-shaped damper 331 has moved to the first position, and the second motor 331 stops rotating.

It can be understood by those skilled in the art that, in order to prevent the wind shielding member 33 from returning to the second position shown in fig. 8 by the spring 343 in defrosting the air-cooled refrigerator, the second motor 331 needs to be energized all the time so that the second motor 331 provides the wind shielding member 33 with a force against the spring 343.

Since the stopped second motor 331 is always energized, the second motor 331 may be burned by the current. Therefore, in some embodiments of the present invention, as shown in fig. 8 and 9, the wind shielding member 33 is provided with a snap structure 333, the housing 31 is provided with a snap structure 311, and the snap structure 333 and the snap structure 311 are snapped together to keep the arc-shaped baffle 331 at the first position (shown in fig. 9) for closing the first wind outlet 302.

As shown in fig. 8 and 9, the engaging structure 333 is a protrusion structure, the engaging structure 311 is a groove structure, and the length of the groove structure is greater than that of the protrusion structure, so that the protrusion structure can slide in the groove structure.

In addition, as required, a person skilled in the art may also set the engaging structure 333 as a groove structure, and the engaging structure 311 as a protrusion structure; alternatively, both the snap-fit structure 333 and the snap-fit structure 311 are provided as a convex structure.

Therefore, when the current of the second motor 331 is greater than the set threshold while the arc-shaped baffle 331 moves from the second position toward the first position, it is determined that the engaging structure 333 is engaged with the engaging structure 311, that is, it is determined that the arc-shaped baffle 331 has moved to the first position, and the second motor 331 stops rotating and is de-energized. At this time, since the engaging structure 333 and the engaging structure 311 engaged with each other can overcome the elastic force of the spring 343, the wind shielding member 33 does not return to the second position shown in fig. 8.

Further, when the arced shield 331 needs to move from the first position (shown in fig. 9) to the second position (shown in fig. 8), the second motor 341 is energized in a reverse direction to rotate the second motor 341 in the reverse direction for a predetermined time (e.g., any time period such as 1S, 2S, 3S, etc.) to disengage the engaging structure 333 from the engaging structure 311 under the action of the second motor 341 and the spring 343. The second motor 341 is then de-energized again to return the wind-deflecting member 33 to the second position shown in fig. 8 at spring 343.

In short, in some embodiments of the present invention, the wind shielding member 33 is driven by the second motor 341 to move from the second position shown in fig. 8 to the first position shown in fig. 9, and is maintained in the first position shown in fig. 9 by the engaging structure 333 and the engaging structure 311 to close the first wind outlet 302 of the vortex fan 3, so that air flows in the defrosting circulation wind path as indicated by the arrow in fig. 2. The wind shielding member 33 can disengage the engaging structure 333 from the engaging structure 311 under the combined action of the second motor 341 and the spring 343, and can move to and maintain the second position shown in fig. 8 under the action of the spring 343 to close the second wind outlet 303 of the vortex fan 3, so that air flows in the cooling circulation wind path as shown by the arrow in fig. 1.

Based on the foregoing description, it can be understood by those skilled in the art that the present invention configures the first outlet 302, the second outlet 303, the wind shielding member 33 and the driving device 34 for the vortex fan 3, so that the air-cooled refrigerator can drive the wind shielding member 33 by the driving device 34 to close one of the first outlet 302 and the second outlet 303, thereby allowing air to flow in the cooling cycle air path or the defrosting cycle air path. When the air flows in the defrosting circulation air passage, the air can continuously blow the evaporator 2, each part of the evaporator 2 is uniformly heated by the heating device 4, and compared with the method that the evaporator 2 transmits heat to the whole body in a self heat transmission mode, the evaporator 2 can uniformly and quickly receive heat, frost on the evaporator 2 is quickly removed, and the defrosting effect of the evaporator 2 is further improved. Meanwhile, the flowing air can promote the mixture of frost and frost water to be separated from the evaporator, and the defrosting effect of the evaporator 2 is further improved.

In addition, although not shown in the drawings, in other embodiments of the present invention, one skilled in the art may omit the arrangement of the snap structure 333, the snap-fit structure 311, and the spring 343, and arrange the second motor 341 as a stepping motor, as required.

Further, although not shown in the drawings, in still other embodiments of the present invention, the skilled person may omit the arrangement of the engaging structure 333, the engaging structure 311 and the spring 343, and the vortex fan 3 further includes a first position detecting sensor for detecting whether the arc-shaped barrier 331 moves the first position and a second position detecting sensor for detecting whether the arc-shaped barrier 331 moves the second position, as required. Illustratively, the first position detection sensor and the second position detection sensor are each a micro switch that is mounted on the housing 31 and can be triggered by the arc flapper 331. When the first position detecting sensor is activated during the movement of the arc-shaped flapper 331 from the second position shown in fig. 8 to the first position shown in fig. 9, it is determined that the arc-shaped flapper 331 has moved to the first position, and the second motor 341 is de-energized. Likewise, when the second position detecting sensor is activated during the movement of the flapper 331 from the first position shown in fig. 9 to the second position shown in fig. 8, it is determined that the flapper 331 has moved to the second position, and the second motor 341 is de-energized.

So far, the technical solution of the present invention has been described in connection with the foregoing embodiments, but it is easily understood by those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Without departing from the technical principle of the present invention, a person skilled in the art may split and combine the technical solutions in the above embodiments, and may make equivalent changes or substitutions for related technical features, and any changes, equivalents, improvements, etc. made within the technical concept and/or technical principle of the present invention will fall within the protection scope of the present invention.

Claims

1. An air-cooled refrigerator comprising:

a vortex fan comprising an air inlet, a first air outlet, a second air outlet, a wind-blocking member and a drive means for driving the wind-blocking member to close one of the first air outlet and the second air outlet;

an evaporator disposed within the refrigeration compartment.

2. The air-cooled refrigerator according to claim 1,

the first air outlet and the second air outlet are both arranged on the circumferential side wall of the shell of the vortex fan;

the wind-blocking member includes an arc-shaped baffle plate slidably coupled to the circumferential side wall to slide the arc-shaped baffle plate along the circumferential direction of the housing to a first position closing the first wind outlet and to slide the arc-shaped baffle plate along the circumferential direction of the housing to a second position closing the second wind outlet.

3. The air-cooling type refrigerator according to claim 2,

the wind shielding component also comprises a rack arranged on the outer side of the arc baffle;

the driving device comprises a driving motor arranged on the shell and a gear in driving connection with the driving motor, and the gear is meshed with the rack so that the vortex fan drives the arc-shaped baffle to move through the driving motor.

4. The air-cooled refrigerator according to claim 3,

the vortex fan further comprises a first position detection sensor and a second position detection sensor,

the first position detection sensor is used for detecting whether the arc-shaped baffle plate moves to the first position or not;

the second position detection sensor is configured to detect whether the arc stop has moved the second position.

5. The air-cooled refrigerator according to claim 4,

the first position detection sensor and the second position detection sensor are both microswitches.

6. The air-cooled refrigerator according to claim 3,

the driving device also comprises a spring, and two ends of the spring are respectively connected with the shell and the wind shielding component;

the spring is used for moving the arc-shaped baffle to and keeping the arc-shaped baffle at the second position for closing the second air outlet.

7. The air-cooled refrigerator according to claim 6,

the wind shielding component is provided with a clamping structure, the machine shell is provided with a clamping matching structure,

the clamping structure and the clamping matching structure are clamped together, so that the arc-shaped baffle is kept at the first position for closing the first air outlet.

8. The air-cooled refrigerator according to claim 7,

the air-cooled refrigerator is configured to determine that the clamping structure and the clamping matching structure are clamped together to stop the rotation of the driving motor when the current of the driving motor is greater than a set threshold value in the process that the arc baffle moves from the second position to the first position;

the air-cooled refrigerator is also configured to enable the driving motor to rotate reversely for a preset time in the process that the arc baffle moves from the first position to the second position, so that the clamping structure is separated from the clamping matching structure under the action of the driving motor and the spring.

9. The air-cooled refrigerator according to any one of claims 1 to 8,

the refrigeration air duct is in an inverted U shape, and the defrosting air duct is located on the inner side of the refrigeration air duct.

10. The air-cooled refrigerator according to any one of claims 1 to 8,

the refrigerator body comprises an air duct cover plate, and the refrigerating air duct and the defrosting air duct are formed on the air duct cover plate; and/or the like and/or,

the air-cooled refrigerator further includes a heating device disposed at a bottom side of the evaporator.