CN115962603A

CN115962603A - Air-cooled refrigerator

Info

Publication number: CN115962603A
Application number: CN202111184216.4A
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: WO2023061163A1

Abstract

The invention provides an air-cooled refrigerator which comprises a refrigerator body, an evaporator, a fan, a first air door and a second air door. The refrigerator body is limited with a refrigeration chamber, a storage chamber, a refrigeration air channel, an air return channel and a defrosting air channel, wherein the refrigeration chamber, the refrigeration air channel, the storage chamber and the air return channel are sequentially communicated end to form a refrigeration circulation air path; and two ends of the defrosting air channel are respectively communicated with the refrigerating chamber to form a defrosting circulation air path. An evaporator is disposed within the refrigerated compartment and is positioned between the ends of the defrost duct. The first air door is used for controlling the air driven by the fan to flow to the storage chamber and circulate in the refrigeration cycle air path, and the second air door is used for controlling the air driven by the fan to flow through the defrosting air channel and circulate in the defrosting cycle air path. The air-cooled refrigerator with the structure 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-cooling type refrigerator also has an evaporator disposed in the refrigerating chamber to cool air in the refrigerating chamber, and a fan. The 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 the air cooled by the evaporator in the refrigerating chamber into the storage chamber and cool the stored objects (comprising food materials, medicines, wine, biological reagents, bacterial colonies, chemical reagents and the like) in the storage chamber.

The stored objects in the storage chamber often comprise food materials with high moisture content, and moisture in the outside can enter the storage chamber, so that the humidity in the storage chamber is high, and the moisture 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, the fan is usually stopped, and then the evaporator is heated, so that the heat is gradually distributed to the whole evaporator, and then the evaporator melts away the frost thereon. 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.

A further object of the present invention is to provide an air-cooled refrigerator which can send out a warning message in time when a damper is out of order.

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

the refrigerator comprises a refrigerator body, a refrigerating chamber, a storage chamber, a refrigerating air channel, an air return channel and a defrosting air channel, wherein the refrigerating chamber, the refrigerating air channel, the storage chamber and the air return channel are sequentially communicated end to form a refrigerating circulation air path; two ends of the defrosting air channel are respectively communicated with the refrigerating chamber to form a defrosting circulation air path;

an evaporator disposed within the refrigerated compartment and located between the two ends of the defrost duct;

the air conditioner comprises a fan, a first air door and a second air door, wherein the first air door is used for controlling air driven by the fan to flow to the storeroom and circulate in the refrigeration cycle air path, and the second air door is used for controlling air driven by the fan to flow through the defrosting air channel and circulate in the defrosting cycle air path.

Optionally, when the air driven by the fan circulates in the refrigeration cycle air passage, the first damper is opened, and the second damper is closed; when the air driven by the fan circulates in the defrosting circulation air path, the first air door is closed, and the second seal is opened; opening one of the first and second dampers prior to the other damper moving from a fully open position to a fully closed position.

Optionally, the air-cooled refrigerator further comprises a first sensor disposed between a fully open position and a fully closed position of the first damper, and a second sensor disposed between a fully open position and a fully closed position of the second damper, the second damper being opened when the first sensor is triggered during movement of the first damper from the fully open position to the fully closed position; the second sensor is triggered to cause the first damper to open during movement of the second damper from a fully open position to a fully closed position.

Optionally, when the first air door moves from one position of a fully closed position and a fully opened position to the other position for a first preset time length, if the first sensor is not triggered, the first air door is judged to be in fault, and the air-cooled refrigerator sends alarm information; and/or, when the second damper moves from one of the fully closed position and the fully open position to the other position for a second preset time, if the second sensor is not triggered, the second damper is judged to be in fault, and the air-cooled refrigerator sends alarm information.

Optionally, the air-cooled refrigerator further comprises a linkage for synchronizing the action of the first damper and the second damper, the linkage comprising a spring for moving and holding the second damper from a fully open position to a fully closed position, a pull cable and a drive member; two ends of the inhaul cable are respectively connected with the first air door and the second air door, so that the first air door is in a fully-opened position when the second air door is in a fully-closed position; the drive member is in driving connection with the first damper for overcoming the spring force of the spring and moving the first damper from a fully open position to a fully closed position and the second damper from a fully closed position to a fully open position.

Optionally, the first damper is a rotary damper and the second damper is a sliding damper.

Optionally, the rotational speed of the fan when the first damper is in the fully open position is not greater than the rotational speed of the fan when the second damper is in the fully open position.

Optionally, the first damper is disposed at one end of the cooling air duct close to the fan; and/or the second damper is arranged at one end of the defrosting air duct far away from the fan.

Optionally, the fan is disposed above the evaporator; and/or, the refrigerator body is limited with two refrigeration air channels and one defrosting air channel, and the defrosting air channel is positioned between the two refrigeration air channels.

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, the air-cooled refrigerator is provided with the defrosting air ducts, two ends of each defrosting air duct are respectively communicated with the refrigeration chamber, and two ends of each defrosting air duct are respectively located at two sides of the evaporator, so that the refrigeration chamber and the defrosting air ducts can form a defrosting circulation air path. Under the action of the first air door and the second air door, air driven by the fan can circularly flow in the defrosting circulation air passage. Therefore, when the air-cooled refrigerator of the present invention defrosts the evaporator, the fan drives the air to continuously blow the evaporator through the defrosting circulation air path, so that each part of the evaporator is uniformly heated, and compared with the method that the evaporator transfers heat to the whole body through self heat transfer, the evaporator can uniformly and rapidly heat, thereby rapidly removing frost on the evaporator, and further improving the defrosting effect of the evaporator. Meanwhile, flowing air can promote frost and frost-water mixture to separate from the evaporator, and the defrosting effect of the evaporator is further improved.

Furthermore, before one of the first air door and the second air door moves from the fully-opened position to the fully-closed position, the other one of the first air door and the second air door is opened, so that the wind blocking phenomenon is avoided when the two air doors are closed, and the problem of overlarge load of the fan due to the wind blocking phenomenon is further avoided.

Still further, during movement of the first damper from the fully open position to the fully closed position, when the first sensor is triggered, the second damper is caused to open; opening the first damper when the first sensor is triggered during movement of the second damper from the fully open position to the fully closed position; the first air door or the second air door is opened before the other air door is completely closed, so that the phenomenon that the two air doors are closed and wind is blocked is avoided.

Further, when the first damper is moved from one of the fully closed position and the fully open position toward the other position for a first preset time period, if the first sensor is not triggered, it is determined that the first damper is out of order, causing the air-cooling type refrigerator to send out an alarm message; and when the second air door moves from one position of the fully closed position and the fully open position to the other position for a second preset time length, if the second sensor is not triggered, the second air door is judged to have a fault, and the air-cooled refrigerator sends alarm information, so that the air-cooled refrigerator can automatically detect the faults of the first air door and the second air door through the first sensor and the second sensor.

In addition, the air-cooled refrigerator can make the first air door and the second air door act synchronously through the linkage device, so that when one air door is opened, the other air door is closed, and the phenomenon that the two air doors are closed and wind is held back is avoided. And the linkage device also enables the two air doors to share one driving device, thereby reducing the production cost of the air-cooled refrigerator.

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 identified in different figures are the same or similar; 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 an air-cooled refrigerator in accordance with some embodiments of the present invention (defrost mode);

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 cross-sectional view taken along the line A-A in FIG. 4;

FIG. 6 is a schematic illustration of the corresponding effect of the damper and sensor in some embodiments of the invention;

FIG. 7 is a schematic illustration of the linkage effect of two dampers in other embodiments of the present 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 principle 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", etc., indicating 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; they may be directly connected or indirectly connected through intervening media, or may be interconnected 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.

The air-cooling type refrigerator of the present invention will be described in detail with reference to fig. 1 to 6. Fig. 1 isbase:Sub>A schematic diagram of an air-cooled refrigerator according to some embodiments of the present invention (cooling mode), fig. 2 isbase:Sub>A schematic diagram of an air-cooled refrigerator according to some embodiments of the present invention (defrosting mode), fig. 3 isbase:Sub>A schematic diagram ofbase:Sub>A first axial effect ofbase:Sub>A cover portion of an air duct according to some embodiments of the present invention, fig. 4 isbase:Sub>A schematic diagram ofbase:Sub>A second axial effect ofbase:Sub>A cover portion of an air duct according to some embodiments of the present invention, fig. 5 isbase:Sub>A cross-sectional view taken alongbase:Sub>A-base:Sub>A direction in fig. 4, and fig. 6 isbase:Sub>A schematic diagram ofbase:Sub>A corresponding effect ofbase:Sub>A damper andbase:Sub>A sensor according to some embodiments of the present invention.

It should be noted that, for convenience of description and to enable those skilled in the art to quickly understand the technical solutions of the present invention, only the technical features that are strongly associated (directly related or indirectly related) 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 a weaker degree of association belong to the common general knowledge in the field, the invention does not lead to insufficient disclosure of the invention even if the features with the weaker 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 fan 3, a damper assembly 4, and a heating device 5.

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 refrigerating compartment 101, respectively, and thus form a 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 refrigerating 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: refrigeration compartment 101 → defrosting air duct 105 → refrigeration 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, the first outlet 1031 of the cooling air duct 103 is disposed at the front side of the air duct cover 110, so that the cooling air duct 103 blows cold air into the storage chamber 102 through the first outlet 1031. The second air outlet 1051 of the defrosting air duct 105 is disposed at the rear side of the air duct cover 110, so that the defrosting air duct 105 delivers the air therein to the cooling compartment 101 through the second air outlet 1051.

As shown in fig. 5, in some embodiments of the present invention, there are two cooling air ducts 103, one defrosting air duct 105, and the defrosting air duct 105 is located between the two cooling air ducts 103, so that the flow cross-sectional area of the cooling air duct 103 is as large as possible, so as to reduce the resistance of the cooling air duct 103 to air.

As shown in fig. 1 and 2, the evaporator 2 is disposed in the cooling compartment 101, and the evaporator 2 is located between both ends of the defrosting air duct 105, so that the air flowing out of the second outlet 1051 flows toward the evaporator 2 to blow the evaporator 2. The 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. The damper assembly 4 is used to selectively flow air driven by the fan 3 to the storage chamber 102 or the defrost duct 105 to circulate the air in the cooling circulation duct or the defrost circulation duct. A heating device 5 is provided at the bottom side of the evaporator 2 for heating the evaporator 2.

The fan 3 may be any feasible fan, such as a centrifugal fan, an axial fan, a cross-flow fan, etc. In some embodiments of the invention, the fan 3 is preferably a centrifugal fan. Further, the fan 3 may be disposed below the evaporator 2 as needed by those skilled in the art.

Wherein the heating device 5 is preferably an electric heating device. Furthermore, the skilled person may, if desired, arrange the heating means 5 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 and 2, the damper assembly 4 includes a first damper 41 and a second damper 42 mounted to the duct cover 110. The first damper 41 controls whether or not the air circulates in the refrigeration cycle air passage as shown in fig. 1, and the second damper 42 controls whether or not the air circulates in the defrost cycle air passage as shown in fig. 2. Specifically, the opened first damper 41 causes the air driven by the fan 3 to flow toward the storage chamber 102 and circulate in the cooling circulation air passage, and the closed first damper 41 does not allow the air driven by the fan 3 to flow toward the storage chamber 102. The second damper 42 that is opened allows the air driven by the fan 3 to flow through the defroster air duct 105 and circulate in the defroster circulation air path, and the second damper 42 that is closed does not allow the air driven by the fan 3 to flow through the defroster air duct 105.

As shown in fig. 1, 2, 4, and 5, a first damper 41 is provided at an end of the cooling air duct 103 near the fan 3 to cut off communication between the cooling air duct 103 and the cooling compartment 101. A second damper 42 is provided at an end of the defrosting air duct 15 remote from the fan 3 to cut off communication between the defrosting air duct 105 and the refrigerating chamber 101.

In addition, the first damper 41 may be disposed at any other position in the cooling air duct 103 on the premise that the first damper 41 prevents the airflow driven by the fan 3 from flowing into the storage chamber 102.

Similarly, the second damper 42 may be disposed at any other position in the defrosting air duct 105, or at one end of the defrosting air duct 105 close to the fan 3, on the premise that the second damper 42 can ensure that the air flow driven by the fan 3 does not flow through the defrosting air duct 105.

As shown in fig. 1, 2 and 5, the top of the air duct cover plate 110 further defines an engaging air duct 106 corresponding to the fan 3, and the cooling air duct 103 and the defrosting air duct 105 are respectively communicated with the engaging air duct 106. The air blown out from the fan 3 firstly enters the connecting air duct 106 and then enters the cooling air duct 103 and the defrosting air duct 105, in other words, the air flowing into the cooling air duct 103 and the defrosting air duct 105 must flow through the connecting air duct 106.

As shown in fig. 5, the first damper 41 is preferably disposed at the junction of the cooling air duct 103 and the joining air duct 106.

As shown in fig. 4 and 5, the first damper 41 is a pivoting type damper, and the second damper 42 is a sliding type damper. In addition, the skilled person can also set the first damper 41 and the second damper 42 as any other feasible dampers as required, for example, the first damper 41 is set as a sliding damper, and the second damper 42 is a pivoting damper.

Although not shown in the drawings, in some embodiments of the present invention, the first damper 41 and the second damper 42 are respectively provided with a driving motor to drive the first damper 41 and the second damper 42 to move by the corresponding driving motors. Of course, the skilled person can replace the drive motor with any other feasible drive means, such as an electromagnetic push rod, as required.

As shown in fig. 6, in some embodiments of the present invention, the air-cooled refrigerator further includes a first sensor 61 and a second sensor 62, the first sensor 61 being disposed between the fully open position and the fully closed position of the first damper 41, and the second sensor 62 being disposed between the fully open position and the fully closed position of the second damper 42.

Wherein the first sensor 61 and the second sensor 62 are used to detect the position of the first damper 41 and the second damper 42, respectively. The first sensor 61 and the second sensor 62 may be any feasible sensor, such as a micro switch, an infrared sensor, a photoelectric sensor, and the like.

The fully open position of the first damper 41 is shown by a solid line box on the upper left side of the chain line in fig. 6 and corresponds to the posture of the first damper 41 in fig. 1, and the fully closed position of the first damper 41 is shown by a dashed line box on the upper right side of the chain line in fig. 6 and corresponds to the posture of the first damper 41 in fig. 2. The fully opened position of the second damper 42 is a position shown by a dashed-left-dotted frame below the dashed line in fig. 6 and corresponds to the posture of the second damper 42 in fig. 2, and the fully closed position of the second damper 42 is a position shown by a solid-right-dotted frame below the dashed line in fig. 6 and corresponds to the posture of the second damper 42 in fig. 1.

With continued reference to FIG. 6, the first damper 41 triggers the first sensor 61 during movement of the first damper 41 from one of the fully closed and fully open positions toward the other. Likewise, the second damper 42 triggers the first sensor 62 during movement of the second damper 42 from one of the fully closed and fully open positions toward the other.

In some embodiments of the present invention, during movement of the first damper 41 from the fully open position to the fully closed position, the second damper 42 is opened again when the first sensor 61 is activated. The first damper 41 is caused to open when the second sensor 62 is triggered during movement of the second damper 42 from the fully open position to the fully closed position. Before one of the first air door 41 and the second air door 42 moves from the fully open position to the fully closed position, the other of the first air door 41 and the second air door 42 is opened, so that the wind blocking phenomenon is avoided when the two air doors are both closed, and the problem of overlarge load of the fan 3 due to the wind blocking phenomenon is further avoided.

Meanwhile, when one air door triggers the corresponding sensor, the other air door is opened, and compared with the method that a closing instruction is directly sent to one air door and an opening instruction is sent to the other air door, the air door executing the closing instruction can be ensured to be closed, and the air door executing the opening instruction does not act at the same time or before the action of the air door executing the closing instruction.

Further, when the first damper 41 is moved from one of the fully closed position and the fully open position toward the other position for a first preset time period, if the first sensor 61 is not triggered, it is determined that the first damper 41 has failed, causing the air-cooling type refrigerator to send an alarm message. When the second damper 42 is moved from one of the fully closed position and the fully open position toward the other for a second preset time period, if the second sensor 62 is not triggered, it is determined that the second damper 42 is malfunctioning, causing the air-cooled refrigerator to emit an alarm message. Therefore, the air-cooled refrigerator can automatically detect the faults of the first damper 41 and the second damper 42 through the first sensor 61 and the second sensor 62, so that when the first damper 41 and the second damper 42 are in fault, a user is reminded to overhaul the air-cooled refrigerator.

Where the first preset time period is a normal time when the first damper 41 moves from the fully closed position to the fully open position, the skilled person can obtain the data through experiments. Alternatively, the first preset time period may be shorter than the normal time period by a person skilled in the art according to needs.

Likewise, the second preset period of time is the normal time when the second damper 42 moves from the fully closed position to the fully open position, and this data can be obtained experimentally by those skilled in the art. Alternatively, the second preset time period may be smaller than the normal time period by those skilled in the art according to the requirement.

The operation of the air-cooling type refrigerator according to some embodiments of the present invention will be briefly described with reference to fig. 1, 2 and 6.

As shown in fig. 1, when the air-cooled refrigerator operates in the cooling mode, the first damper 41 is opened, the second damper 42 is closed, and the fan 3 drives air to circulate in the cooling circulation air passage through the following paths: the refrigerating compartment 101 → the refrigerating duct 103 → the storage compartment 102 → the return air duct 104 → the refrigerating compartment 101.

As shown in fig. 2, when the air-cooling type refrigerator is operated in the defrosting mode, the first damper 41 is closed, the second damper 42 is opened, and the heating device 5 heats the evaporator 2. The fan 3 drives the air to circulate in the refrigeration cycle air passage, and the air flow path is as follows: refrigeration compartment 101 → defrosting air duct 105 → refrigeration compartment 101.

As shown in fig. 1, 2 and 6, when the air-cooled refrigerator is switched from the cooling mode to the defrosting mode, the first damper 41 is closed, and when the first sensor 61 is triggered, the second damper 42 is opened. When the air-cooled refrigerator is switched from the defrosting mode to the cooling mode, the second damper 42 is closed, and when the second sensor 62 is triggered, the first damper 41 is opened.

Preferably, the rotational speed of the fan 3 when the first damper 41 is in the fully open position is not greater than the rotational speed of the fan 3 when the second damper 42 is in the fully open position. That is, the rotational speed of the fan 3 when operating in the cooling mode is not greater than the rotational speed of the fan 3 when operating in the defrosting mode. Further preferably, the rotation speed of the fan 3 when operating in the defrosting mode is 1-2 times the rotation speed of the fan 3 when operating in the cooling mode.

Based on the foregoing description, it can be understood by those skilled in the art that in some embodiments of the present invention, when the evaporator 2 is defrosted, the first damper 41 is closed, and the second damper 42 is opened, so that air flows only between the cooling chamber 101 and the defrosting air duct 105, and does not enter the storage chamber 102, which can both avoid the temperature rise of the storage chamber 102 and heat the evaporator 2 uniformly by the circulating air, thereby improving the defrosting efficiency of the evaporator 2. Meanwhile, the problem that the fan is overloaded due to the wind blocking phenomenon is solved.

Further embodiments of the invention are described below with reference to fig. 7. FIG. 7 is a schematic illustration of the linkage effect of two dampers in other embodiments of the present invention.

In other embodiments of the invention, as shown in figure 7, unlike the previously described embodiments, the first damper 41 and the second damper 42 can be actuated in synchronism by a single drive, i.e. one damper is open and the other damper is closed in synchronism.

As shown in fig. 7, the first damper 41 is preferably a damper connected to the duct cover 110, and the second damper 42 is preferably a damper slidably connected to the duct cover 110. The air-cooling type refrigerator further includes a linkage 7 for synchronizing the operation of the first damper 41 and the second damper 42.

With continued reference to FIG. 7, a linkage 7 is mounted to the duct cover 110, the linkage 7 including a drive member 71, a cable 72, a spring 73 and a wire spool 74.

With continued reference to fig. 7, the drive member 71 is drivingly connected to the spool 74 and the first damper 41. Alternatively, the drive member 71 is a motor, and the drive shaft of the drive member 71 is fixedly connected coaxially with the pivot shaft of the first damper 41 and the wire spool 74.

With continued reference to FIG. 7, the cable 72 is connected at each end to the first damper 41 and the second damper 42, respectively, to place the first damper 41 in a fully open position when the second damper 42 is in a fully closed position. Specifically, one end of the cable 72 is connected to the wire spool 74, and thus a portion of the cable 72 can be wound on the wire spool 74; the other end of the cable 72 is connected to the second damper 42.

With continued reference to FIG. 7, one end of the spring 73 is connected to the second damper 42, and one end of the spring 73 is further connected to the duct cover 110. Preferably, the spring 73 is a tension spring provided at a side of the second damper 42 away from the tension cable 72, and both ends of the spring 73 are hooked with the second damper 42 and the duct cover 110, respectively.

When the air-cooled refrigerator is in the cooling mode, the driving member 71 is de-energized, and the second damper 42 is moved down to and held in the fully closed position (shown in fig. 1) by the spring 73. The first damper 41 is moved to the fully open position (shown in fig. 1) by the pull cable 72.

When the air-cooled refrigerator is in the defrosting mode, the driving member 71 is energized to rotate the first damper 41 to the fully closed position (shown in fig. 2) against the pulling force of the spring 73 by the wire spool 74. At the same time, the second damper 42 is moved up to the fully open position (as shown in FIG. 2).

Therefore, in other embodiments of the present invention, the linkage 7 can enable the first damper 41 and the second damper 42 to act synchronously, so that one damper is closed while the other damper is opened, thereby avoiding the occurrence of a wind holding phenomenon due to the closing of both dampers. And linkage 7 still makes two air doors can share a motor, has reduced the manufacturing cost of air-cooled refrigerator.

Furthermore, the person skilled in the art may also provide the drive member 71 as any other feasible member, as desired. Illustratively, the drive member 71 is provided as an electromagnetic push rod, and the first damper 41 is provided as a damper in sliding connection with the duct cover 110, and then the pull cable 72 is directly bolted to the first damper 41 to move the first damper 41 to the fully closed position (as shown in fig. 2) by the electromagnetic push rod against the pulling force of the spring 73. At the same time, the second damper 42 is moved up to the fully open position (as shown in FIG. 2).

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:

the air conditioner comprises a fan, a first air door and a second air door, wherein the first air door is used for controlling the air driven by the fan to flow to the storage chamber and circulate in the refrigeration cycle air path, and the second air door is used for controlling the air driven by the fan to flow through the defrosting air channel and circulate in the defrosting cycle air path.

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

when the air driven by the fan circulates in the refrigeration cycle air path, the first air door is opened, and the second air door is closed;

when the air driven by the fan circulates in the defrosting circulation air path, the first air door is closed, and the second seal is opened;

opening one of the first and second dampers prior to the other damper moving from a fully open position to a fully closed position.

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

the air-cooled refrigerator further includes a first sensor and a second sensor,

the first sensor is disposed between a fully open position and a fully closed position of the first damper,

the second sensor is disposed between a fully open position and a fully closed position of the second damper,

opening the second damper when the first sensor is triggered during movement of the first damper from a fully open position to a fully closed position;

the first damper is caused to open when the second sensor is triggered during movement of the second damper from a fully open position to a fully closed position.

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

when the first air door moves from one position of a fully closed position and a fully opened position to the other position for a first preset time, if the first sensor is not triggered, the first air door is judged to be in fault, and the air-cooled refrigerator sends alarm information; and/or the like and/or,

when the second damper moves from one of the fully closed position and the fully open position to the other position for a second preset time, if the second sensor is not triggered, it is determined that the second damper has a fault, and the air-cooled refrigerator sends an alarm message.

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

the air-cooled refrigerator further comprises a linkage device which enables the first air door and the second air door to act synchronously, the linkage device comprises a spring, a pull rope and a driving component,

the spring is used for moving the second air door from a full opening position to a full closing position and keeping the second air door at the full closing position;

two ends of the guy cable are respectively connected with the first air door and the second air door so as to enable the first air door to be in a fully-opened position when the second air door is in a fully-closed position;

the drive member is in driving connection with the first damper, the drive member being for overcoming the spring force of the spring and moving the first damper from a fully open position to a fully closed position, and moving the second damper from a fully closed position to a fully open position.

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

the first damper is a rotary damper and the second damper is a sliding damper.

7. The air-cooled refrigerator according to any one of claims 1 to 6,

the rotational speed of the fan when the first damper is in the fully open position is not greater than the rotational speed of the fan when the second damper is in the fully open position.

8. The air-cooled refrigerator according to any one of claims 1 to 6,

the first air door is arranged at one end of the refrigeration air duct close to the fan; and/or the like and/or,

the second air door is arranged at one end of the defrosting air channel far away from the fan.

9. The air-cooled refrigerator according to any one of claims 1 to 6,

the fan is arranged above the evaporator; and/or the like and/or,

the refrigerator body is limited with two refrigeration wind channels and one defrosting wind channel, and the defrosting wind channel is located between the two refrigeration wind channels.

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

the refrigerator body comprises an air duct cover plate, and the refrigerating air duct and the defrosting air duct are both 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.