Refrigerator

Abstract

The invention belongs to the technical field of refrigeration, and particularly provides a refrigerator. The problem that the heat exchange efficiency of an evaporator in a partition plate of an existing refrigerator is low is solved. A first plate-type evaporator and a second plate-type evaporator are arranged in a refrigeration chamber, so that the refrigeration chamber is divided into a first air supply channel, an air return channel and a second air supply channel which are sequentially distributed in the first direction, and the first air supply channel communicates with a first storage chamber and the air return channel; the second air supply channel communicates with the second storage chamber and the air return channel, and the air return channel communicates with the first storage chamber and the second storage chamber. The draught fan can drive air to flow to the air return channel from the first storage chamber and / or the second storage chamber, and air in the air return channel flows to the first storage chamber through the first air supply channel and / or flows to the second storage chamber through the second air supply channel. The technical problems are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of refrigeration, and specifically provides a refrigerator. Background Art

[0002] For the current T-door or multi-door refrigerators with split doors, the evaporator of the bottom compartment is generally arranged at the rear side of the bottom compartment. Due to the large volume of the evaporator, the depth of the bottom of the bottom compartment is small.

[0003] Furthermore, the bottom compartment of the refrigerator is usually divided into two compartments, which are separated by a partition. In order to control the temperature of the two compartments, the partition is generally made thicker, resulting in a low space utilization rate of the refrigerator.

[0004] For this reason, some refrigerators arrange the evaporator in the partition. Specifically, the partition defines a refrigeration compartment, and then the evaporator is arranged in the refrigeration compartment. However, the heat exchange efficiency of the existing evaporator in the partition is low.

[0005] Furthermore, for air-cooled refrigerators, the air outlet of the bottom compartment is generally arranged on the rear side wall of the bottom compartment, so that the cold air blows from the back to the front, resulting in a large temperature difference between the front and back of the bottom compartment, making the temperature of the area near the door of the bottom compartment higher. Summary of the invention

[0006] An object of the present invention is to solve the problem of low heat exchange efficiency of the evaporator in the partition of the existing refrigerator.

[0007] A further object of the present invention is to overcome the problem of large temperature difference between the front and rear of the bottom compartment of the refrigerator.

[0008] To achieve the above object, the present invention provides a refrigerator, comprising:

[0009] The box body defines a first storage compartment, a refrigeration compartment, and a second storage compartment sequentially distributed along a first direction;

[0010] A first plate evaporator and a second plate evaporator are sequentially arranged in the refrigerating compartment along the first direction to divide the refrigerating compartment into a first air supply channel, a return air channel, and a second air supply channel sequentially distributed along the first direction, the first air supply channel is communicated with the first storage compartment and the return air channel respectively, the second air supply channel is communicated with the second storage compartment and the return air channel respectively, and the return air channel is communicated with the first storage compartment and the second storage compartment respectively;

[0011] a fan, for driving air from the first storage compartment and / or the second storage compartment to the return air passage, and causing the air in the return air passage to flow to the first storage compartment via the first air supply passage and / or to flow to the second storage compartment via the second air supply passage.

[0012] Optionally, the first direction is parallel to the left-right direction of the refrigerator.

[0013] Optionally, a plurality of first air outlets are provided on the side wall between the first air supply channel and the first storage compartment.

[0014] A plurality of second air outlets are arranged on the side wall between the second air supply channel and the second storage compartment.

[0015] Optionally, the plurality of first air outlets include a plurality of first front air outlets and a plurality of first rear air outlets, the plurality of first front air outlets are arranged adjacent to the opening of the first storage compartment, the plurality of first rear air outlets are arranged away from the opening of the first storage compartment, and the opening area of ​​the first front air outlet is larger than the opening area of ​​the first rear air outlet; and / or,

[0016] The multiple second air outlets include multiple second front air outlets and multiple second rear air outlets, the multiple second front air outlets are arranged adjacent to the opening of the second storage compartment, the multiple second rear air outlets are arranged away from the opening of the second storage compartment, and the opening area of ​​the second front air outlet is larger than the opening area of ​​the second rear air outlet.

[0017] Optionally, the fan is arranged at a connection between the first air supply channel, the return air channel and the second air supply channel, and is located above the first plate evaporator and the second plate evaporator.

[0018] Optionally, a first return air outlet communicating with the first storage compartment and a second return air outlet communicating with the second storage compartment are provided at a position of the return air passage away from the fan.

[0019] Optionally, the refrigerator further comprises a damper assembly, wherein the damper assembly is configured to allow air in the return air passage to flow toward at least one of the first storage compartment and the second storage compartment.

[0020] Optionally, the refrigerator further comprises a water receiving tray arranged in the refrigeration compartment, wherein the water receiving tray is disposed below the first plate evaporator and the second plate evaporator to receive water falling from the first plate evaporator and the second plate evaporator.

[0021] Optionally, the water receiving tray is provided with a first water receiving groove located below the first plate evaporator, a second water receiving groove located below the second plate evaporator, and a hollow structure formed between the first water receiving groove and the second water receiving groove, wherein the hollow structure is used to allow air flow.

[0022] Optionally, the water receiving tray is configured to tilt downward from front to back so that water on the water receiving tray flows to the rear of the water receiving tray.

[0023] Optionally, the box body further defines a third storage compartment located above the return air duct.

[0024] The fan is also configured to drive the air in the return air passage into the third storage compartment.

[0025] Optionally, the fan is a cross-flow fan or a centrifugal fan.

[0026] Optionally, the box body includes a vertical beam located between the first storage compartment and the second storage compartment in the left-right direction, and the vertical beam is located at the front side of the refrigeration compartment.

[0027] Optionally, the width of the vertical beam is less than or equal to the distance between two adjacent walls of the first storage compartment and the second storage compartment.

[0028] Optionally, at least two opposite sides of the first plate evaporator in the extension direction abut against the inner wall surface of the refrigeration compartment; and / or at least two opposite sides of the second plate evaporator in the extension direction abut against the inner wall surface of the refrigeration compartment.

[0029] Optionally, the refrigerator further includes a windshield structure, and the windshield structure is disposed in at least one of the first air supply channel, the return air channel and the second air supply channel, so that the corresponding air duct is limited to a bent channel by the windshield structure, thereby extending the length of the corresponding air duct.

[0030] Based on the foregoing description, it can be understood by those skilled in the art that, in the aforementioned technical solution of the present invention, by sequentially arranging the first plate evaporator and the second plate evaporator in the refrigeration compartment along the first direction, the refrigeration compartment is divided into a first air supply channel, a return air channel, and a second air supply channel sequentially distributed along the first direction. By respectively communicating the first air supply channel with the first storage compartment and the return air channel, respectively communicating the second air supply channel with the second storage compartment and the return air channel, respectively communicating the return air channel with the first storage compartment and the second storage compartment, respectively communicating the return air channel with the first storage compartment and the second storage compartment, respectively, air can flow from the first storage compartment to the return air channel, and air in the return air channel flows to the first storage compartment via the first air supply channel, and air can flow from the second storage compartment to the return air channel, and air in the return air channel flows to the second storage compartment via the second air supply channel.

[0031] It is understandable to those skilled in the art that, in the present invention, the above two air flow paths allow air to flow through both sides of the first plate evaporator and the second plate evaporator, respectively, thereby ensuring the contact area between the first plate evaporator and the second plate evaporator and the air, and improving the cooling efficiency of the first plate evaporator and the second plate evaporator for the air. In addition, the air flow directions on both sides of the first plate evaporator and the second plate evaporator are opposite, so that the overall temperature of the first plate evaporator and the second plate evaporator is more uniform during operation, thereby making the frost amount of each of the first plate evaporator and the second plate evaporator more uniform. Compared with the prior art, in which air is made to flow from one end of the evaporator to the other end, this effectively overcomes the problem that a certain part of the evaporator has a large amount of frost, which is easy to block the air duct and increase wind resistance.

[0032] Furthermore, by making the first direction parallel to the left-right direction of the refrigerator, a plurality of first air outlets are provided on the side wall between the first air supply channel and the first storage compartment, and a plurality of second air outlets are provided on the side wall between the second air supply channel and the second storage compartment, so that the cold air in the first storage compartment and the second storage compartment can be blown out from one side in the left-right direction thereof, so that the temperature difference between the first storage compartment and the second storage compartment in the front-to-back direction is small and the temperature is more uniform.

[0033] Furthermore, by making the multiple first air outlets include multiple first front air outlets and multiple first rear air outlets, the multiple first front air outlets are arranged near the opening of the first storage compartment, the multiple first rear air outlets are arranged away from the opening of the first storage compartment, and the opening area of ​​the first front air outlets is larger than the opening area of ​​the first rear air outlets; making the multiple second air outlets include multiple second front air outlets and multiple second rear air outlets, the multiple second front air outlets are arranged near the opening of the second storage compartment, the multiple second rear air outlets are arranged away from the opening of the second storage compartment, and the opening area of ​​the second front air outlets is larger than the opening area of ​​the second rear air outlets; so that the front of each of the first storage compartment and the second storage compartment obtains more cold water, and after the refrigerator door is opened and closed, the front of each of the first storage compartment and the second storage compartment can be quickly cooled.

[0034] Furthermore, by arranging a windshield structure in at least one of the first air supply channel, the return air channel and the second air supply channel, the windshield structure limits the corresponding air channel to a curved channel, thereby extending the length of the corresponding air channel, thereby increasing the flow rate of the air in the corresponding air channel, so that each part of the first plate evaporator and the second plate evaporator is in contact with a larger amount of air, thereby improving the heat exchange efficiency between the air and the corresponding evaporator.

[0035] Other beneficial effects of the present invention will be described in detail below in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand the improved purposes, features and advantages of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order 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. It should be understood by those skilled in the art that the same reference numerals indicate the same or similar components or parts in different drawings; the drawings of the present invention are not necessarily drawn to scale.

[0037] In the attached figure:

[0038] Figure 1 It is a schematic diagram of the effect of a refrigerator body provided by the present invention;

[0039] Figure 2 In some embodiments of the present invention, the refrigerator Figure 1 Sectional rendering in the inner AA direction;

[0040] Figure 3 yes Figure 2 Enlarged view of middle part B;

[0041] Figure 4 yes Figure 2 A cross-sectional view of the middle refrigerator along the CC direction;

[0042] Figure 5 yes Figure 2 A cross-sectional view of the middle refrigerator along the DD direction;

[0043] Figure 6 In some other embodiments of the present invention, the refrigerator Figure 1 Sectional rendering in the inner AA direction;

[0044] Figure 7 is an axonometric view of a fan in some embodiments of the present invention;

[0045] Figure 8 yes Figure 7 Isometric section view along the EE direction;

[0046] Fig. 9 yes Figure 7 A cross-sectional view along the EE direction;

[0047] Fig.10 yes Figure 7 End view of the blower along the F direction (the end cover is hidden);

[0048] Fig.11 is an axonometric view of a water receiving tray in some embodiments of the present invention;

[0049] Fig.12 It is a schematic diagram of the effect of the electric heating wire in the present invention;

[0050] Fig.13 is a schematic diagram of a refrigeration system in some embodiments of the present invention;

[0051] Fig.14 is a schematic diagram of another refrigeration system in some embodiments of the present invention;

[0052] Fig.15 is a schematic diagram of refrigeration of a refrigerator in a first posture in some embodiments of the present invention;

[0053] Fig.16 is a schematic diagram of refrigeration of the refrigerator in the second posture in some embodiments of the present invention;

[0054] Fig.17 is a schematic diagram of refrigeration of a refrigerator in a third posture in some embodiments of the present invention;

[0055] Fig.18 is a schematic diagram of refrigeration of a refrigerator in a fourth posture in some embodiments of the present invention;

[0056] Fig.19 is a schematic diagram of refrigeration of a refrigerator in a fifth posture in some embodiments of the present invention;

[0057] Fig. 20 is a schematic diagram of refrigeration of a refrigerator in a sixth posture in some embodiments of the present invention;

[0058] Fig.21 is a schematic diagram of refrigeration of a refrigerator in a seventh posture in some embodiments of the present invention;

[0059] Fig. 22 is a schematic block diagram of the electrical appliance part of a refrigerator in some embodiments of the present invention;

[0060] Fig.23 Schematic diagram of windshield structure in some other embodiments of the present invention. DETAILED DESCRIPTION

[0061] It should be understood by those skilled in the art that the embodiments described below are only some embodiments of the present invention, rather than all embodiments of the present invention, and these embodiments are intended to explain the technical principles of the present invention, rather than to limit the protection scope of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should still fall within the protection scope of the present invention.

[0062] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0063] Furthermore, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In addition, it should be noted that in the description of the present invention, the terms "cold" and "heat" are two descriptions of the same physical state. That is, the higher the "cold" of a certain target object (such as an evaporator, air, condenser, etc.), the lower the "heat" it has, and the lower the "cold" it has, the higher the "heat" it has. A certain target object will release "heat" while absorbing "cold", and will absorb "heat" while releasing "cold". A certain target object stores "cold" or "heat" to keep the current temperature of the target object. "Refrigeration" and "heat absorption" are two descriptions of the same physical phenomenon, that is, a certain target object (such as an evaporator) will absorb heat while cooling.

[0065] like Figures 1 to 3 As shown, in the present invention, the refrigerator includes a cabinet 100 , a first plate evaporator 210 , a second plate evaporator 220 and a fan 300 .

[0066] The housing 100 defines a first storage compartment 131 , a refrigeration compartment 140 , and a second storage compartment 132 that are sequentially distributed along a first direction.

[0067] Among them, the first plate evaporator 210 and the second plate evaporator 220 are arranged in sequence in the refrigeration compartment 140 along the first direction to divide the refrigeration compartment 140 into a first air supply channel 141, a return air channel 142 and a second air supply channel 143 which are distributed in sequence along the first direction, the first air supply channel 141 is connected to the first storage compartment 131 and the return air channel 142 respectively, the second air supply channel 143 is connected to the second storage compartment 132 and the return air channel 142 respectively, and the return air channel 142 is connected to the first storage compartment 131 and the second storage compartment 132 respectively.

[0068] The fan 300 is used to drive the air from the first storage compartment 131 and / or the second storage compartment 132 to the return air passage 142, and to make the air in the return air passage 142 flow to the first storage compartment 131 via the first air supply passage 141 and / or flow to the second storage compartment 132 via the second air supply passage 143.

[0069] The first direction is parallel to the left-right direction of the refrigerator, or is the left-right direction of the refrigerator.

[0070] The first plate evaporator 210 and the second plate evaporator 220 are each in the shape of a plate or sheet as a whole, and the two opposite sides of the extension direction thereof can be separated by them. In simple terms, the first plate evaporator 210 and the second plate evaporator 220 can each be understood as a plate or sheet structure without through holes in the thickness direction thereof as a whole.

[0071] Alternatively, those skilled in the art may also make the first direction parallel to the up-down direction of the refrigerator as needed, especially when the refrigerator of the present invention does not have the third storage compartment 133 described later, or when the third storage compartment 133 is disposed on the left or right side of the first storage compartment 131 or the second storage compartment 132.

[0072] It is understood by those skilled in the art that, in the present invention, the above two air flow paths allow air to flow through both sides of the first plate evaporator 210 and the second plate evaporator 220, thereby improving the cooling efficiency of the first plate evaporator 210 and the second plate evaporator 220. In addition, the air flow directions on both sides of the first plate evaporator 210 and the second plate evaporator 220 are opposite, so that the overall temperature of the first plate evaporator 210 and the second plate evaporator 220 is more uniform during operation, thereby making the frost amount of the first plate evaporator 210 and the second plate evaporator 220 more uniform. Compared with the prior art, in which air is made to flow from one end of the evaporator to the other end, this effectively overcomes the problem that a certain part of the evaporator has a large amount of frost, which is easy to block the air duct and increase the wind resistance.

[0073] The following will refer to the attached Figure 1-23 The refrigerator of the present invention will be further described.

[0074] like Figure 1 As shown, in the present invention, the refrigerator includes a box body 100, and the box body 100 can be divided into an upper part (the part above the dotted line in the figure) and a lower part (the part below the dotted line in the figure). The lower part defines a first storage compartment 131 and a second storage compartment 132, and the upper part defines a third storage compartment 133.

[0075] The first storage compartment 131, the second storage compartment 132 and the third storage compartment 133 may be a freezing compartment, a refrigerating compartment or a variable temperature compartment respectively.

[0076] In some embodiments of the present invention, the first storage compartment 131 may be a temperature-changing compartment, the second storage compartment 132 may be a freezing compartment, and the third storage compartment 133 may be a refrigerating compartment.

[0077] Continue reading Figure 1 The lower part of the box body 100 includes a vertical beam 120 and a partition 110 located at the rear side of the vertical beam 120. The first storage compartment 131 and the second storage compartment 132 are respectively located on the left and right sides of the partition 110, and thus the first storage compartment 131 and the second storage compartment 132 are separated in the left and right directions of the refrigerator by the partition 110.

[0078] It should be noted that the box 100 shown in the figure of the present invention is intended to help those skilled in the art understand the technical solution of the present invention, and does not mean that the box 100 of the present invention can only be the structure shown in the figure. In addition to the box 100 shown in the figure, those skilled in the art can also set the box 100 of the present invention to any other feasible form as needed. For example, another storage compartment is set on the left side, right side or upper side of the third storage compartment 133.

[0079] like Figure 2 and Figure 3 As shown, in some embodiments of the present invention, the cabinet 100 further defines a refrigeration compartment 140 , which is located between the first storage compartment 131 and the second storage compartment 132 .

[0080] Further, the refrigeration compartment 140 is located at the rear side of the vertical beam 120. Also, the refrigeration compartment 140 is formed in the partition 110 so that the refrigeration compartment 140 and the first storage compartment 131 have the same side wall, and the refrigeration compartment 140 and the second storage compartment 132 have the same side wall.

[0081] Although not explicitly shown in the figures, in some embodiments of the present invention, the width of the vertical beam 120 is less than or equal to the distance between the two adjacent walls of the first storage compartment 131 and the second storage compartment 132, so that the refrigerator can make full use of its internal space and improve the space utilization rate of the refrigerator.

[0082] Continue reading Figure 2 and Figure 3 In some embodiments of the present invention, the first plate evaporator 210 and the second plate evaporator 220 are sequentially arranged in the refrigeration compartment 140 along the first direction to divide the refrigeration compartment 140 into a first air supply channel 141, a return air channel 142, and a second air supply channel 143 sequentially distributed along the first direction. The first air supply channel 141 is communicated with the first storage compartment 131 and the return air channel 142, respectively, the second air supply channel 143 is communicated with the second storage compartment 132 and the return air channel 142, respectively, and the return air channel 142 is communicated with the first storage compartment 131 and the second storage compartment 132, respectively.

[0083] Those skilled in the art can understand that the formation of the first air supply channel 141, the return air channel 142 and the second air supply channel 143 enables the first plate evaporator 210 and the second plate evaporator 220, as well as the sides of the first plate evaporator 210 and the second plate evaporator 220 facing away from each other and the inner wall surface of the refrigeration chamber 140 to be spaced apart.

[0084] Furthermore, if Figure 3As shown, in some embodiments of the present invention, a plurality of first air outlets 151 are provided on the side wall between the first air supply channel 141 and the first storage compartment 131 , and a plurality of second air outlets 152 are provided on the side wall between the second air supply channel 143 and the second storage compartment 132 .

[0085] like Figure 4 As shown, in some embodiments of the present invention, the multiple first air outlets 151 may further include multiple first front air outlets 1511 and multiple first rear air outlets 1512, the multiple first front air outlets 1511 are arranged adjacent to the opening of the first storage compartment 131, the multiple first rear air outlets 1512 are arranged away from the opening of the first storage compartment 131, and the opening area of ​​the first front air outlets 1511 is larger than the opening area of ​​the first rear air outlets 1512.

[0086] like Figure 5 As shown, in some embodiments of the present invention, the multiple second air outlets 152 may further include multiple second front air outlets 1521 and multiple second rear air outlets 1522, the multiple second front air outlets 1521 are arranged adjacent to the opening of the second storage compartment 132, the multiple second rear air outlets 1522 are arranged away from the opening of the second storage compartment 132, and the opening area of ​​the second front air outlets 1521 is larger than the opening area of ​​the second rear air outlets 1522.

[0087] Those skilled in the art will appreciate that by making the opening area of ​​the first front air outlet 1511 larger than the opening area of ​​the first rear air outlet 1512, and making the opening area of ​​the second front air outlet 1521 larger than the opening area of ​​the second rear air outlet 1522, the front portions of the first storage compartment 131 and the second storage compartment 132 can each obtain more cooling capacity, and after the refrigerator opens and closes the door bodies 720 of the first storage compartment 131 and the second storage compartment 132, the front portions of the first storage compartment 131 and the second storage compartment 132 can each be quickly cooled.

[0088] like Figure 3 As shown, in some embodiments of the present invention, the fan 300 is disposed at the junction between the first air supply channel 141, the return air channel 142 and the second air supply channel 143, and is located above the first plate evaporator 210 and the second plate evaporator 220. The return air channel 142 is provided with a first return air port 161 communicating with the first storage compartment 131 and a second return air port 162 communicating with the second storage compartment 132 at a position away from the fan 300.

[0089] Those skilled in the art can understand that when the first storage compartment 131 needs to be refrigerated, the fan 300 can drive the air to circulate along the following path: first storage compartment 131 → first return air outlet 161 → return air passage 142 → first air supply passage 141 → first air outlet 151 → first storage compartment 131. When the second storage compartment 132 needs to be refrigerated, the fan 300 can drive the air to circulate along the following path: second storage compartment 132 → second return air outlet 162 → return air passage 142 → second air supply passage 143 → second air outlet 152 → second storage compartment 132.

[0090] like Figure 2 As shown, in some embodiments of the present invention, the third storage compartment 133 is located above the first storage compartment 131 , the refrigeration compartment 140 and the second storage compartment 132 .

[0091] The cabinet 100 further defines a third storage compartment 133 located above the first storage compartment 131, the refrigeration compartment 140, and the second storage compartment 132, a third air supply passage 144 communicating with the third storage compartment 133, and a connecting air passage 145 communicating the third storage compartment 133 with the return air passage 142.

[0092] like Figure 4 and Figure 5 As shown, in some embodiments of the present invention, the cabinet 100 is further defined by a third air supply channel 144 connecting the third storage compartment 133 with the return air channel 142, so that the air in the return air channel 142 enters the third storage compartment 133 through the third air supply channel 144 under the action of the fan 300.

[0093] Furthermore, although not shown in the figures, in some embodiments of the present invention, the housing 100 is also defined as a third return air channel 142 connecting the third storage compartment 133 with the return air channel 142, so that the air in the third storage compartment 133 can flow back to the return air channel 142 through the third return air channel 142 under the action of the fan 300.

[0094] In addition, in other embodiments of the present invention, those skilled in the art may also arrange the third storage compartment 133 into any other feasible form as needed, such as reversing the above-mentioned upper and lower arrangement relationship of the first storage compartment 131, the second storage compartment 132 and the third storage compartment 133, that is, arranging the third storage compartment 133 below the first storage compartment 131 and the second storage compartment 132.

[0095] from Figure 4 and Figure 5It can be seen that in some embodiments of the present invention, in the front-to-back direction of the refrigerator, the size of the return air duct 142 is smaller than the size of the refrigeration compartment 140; in the up-down direction of the refrigerator, the size of the return air duct 142 is also smaller than the size of the refrigeration compartment 140.

[0096] It should be noted that the size of the return air duct 142 and Figure 4 and Figure 5 The size relationship between the first plate evaporator 210 and the second plate evaporator 220 relative to the return air channel 142 is only for showing the return air channel 142, the first air supply channel 141 (or the second air supply channel 143), the first air outlet 151 (or the second air outlet 152), the first return air outlet 161 (or the second return air outlet 162) and the first plate evaporator 210 (or the second plate evaporator 220) in the same figure to facilitate the understanding of those skilled in the art.

[0097] Therefore, on the premise that the first plate evaporator 210 and the second plate evaporator 220 divide the refrigeration compartment 140 into the first air supply channel 141, the return air channel 142 and the second air supply channel 143 sequentially distributed along the first direction, those skilled in the art may also appropriately adjust the related structures as needed.

[0098] For example, in Figure 6 In some other embodiments shown in , at least two opposite sides of the first plate evaporator 210 in the extension direction abut against the inner wall surface of the refrigeration compartment 140; and / or, at least two opposite sides of the second plate evaporator 220 in the extension direction abut against the inner wall surface of the refrigeration compartment 140.

[0099] Specific as Figure 6 As shown, the return air passage 142 has the same size as the refrigerating compartment 140 in the front-to-back direction of the refrigerator, and the front end of the first plate evaporator 210 (and the second plate evaporator 220) can abut against the front inner wall surface of the refrigerating compartment 140, and the rear end of the first plate evaporator 210 (and the second plate evaporator 220) can abut against the rear inner wall surface of the refrigerating compartment 140. There is a gap between the top and bottom ends of each of the first plate evaporator 210 and the second plate evaporator 220 and the upper inner wall surface and the lower inner wall surface of the refrigerating compartment 140, respectively, so as to arrange components such as the fan 300 and the water receiving tray 400.

[0100] Refer to the following Figures 7 to 10 The fan 300 of the present invention will be described in detail.

[0101] like Figures 7 to 9 As shown, the fan 300 of the present invention includes a casing 310 , an impeller 320 , an end cover 330 and a damper assembly 340 .

[0102] like Figure 8 and Fig. 9 As shown, the housing 310 includes an outer shell 311 and an inner shell 312, a cavity 301 is defined between the outer shell 311 and the inner shell 312, a first outgoing air port 3111 and a second outgoing air port 3112 are provided on the peripheral wall of the outer shell 311, and a first inner air outlet 3121 radially aligned with the first outgoing air port 3111 and a second inner air outlet 3122 radially aligned with the second outgoing air port 3112 are provided on the peripheral wall of the inner shell 312. An air inlet 3124 is also provided on the peripheral wall of the inner shell 312, and the side wall of the air inlet 3124 extends radially to the outside of the outer shell 311.

[0103] Return to view Figure 3 The first outgoing air outlet 3111 is connected to the first air supply channel 141 , the second outgoing air outlet 3112 is connected to the second air supply channel 143 , and the air inlet 3124 is connected to the return air channel 142 .

[0104] Furthermore, the air inlet 3124 extends to two opposite sides of the side wall outside the housing 311 and can abut against the first plate evaporator 210 and the second plate evaporator 220 respectively.

[0105] like Figures 7 to 9 As shown, the impeller 320 is rotatably mounted in the inner shell 312 to drive the air to enter the inner shell 312 from the air inlet 3124, and drive the air in the inner shell 312 to be blown out through at least one group of the first outgoing air outlet 3111 and the first inner air outlet 3121, the second outgoing air outlet 3112 and the second inner air outlet 3122, and the second outgoing air outlet 3112 and the second inner air outlet 3122.

[0106] like Figure 7 and Figure 8 As shown, the end cover 330 is disposed at one end of the housing 310 in the axial direction and is fixedly connected to the housing 310 or made integrally therewith. The fixed connection may be screw connection, clamping, riveting, bonding, welding, etc.

[0107] Alternatively, those skilled in the art may also omit the end cover 330 as required.

[0108] like Figure 8 and Fig. 9 As shown, the damper assembly 340 includes a first damper 341 and a second damper 342 .

[0109] The first damper 341 is slidably installed in the cavity 301 along the circumference of the housing 310 and is used to connect or block the first external air outlet 3111 and the first internal air outlet 3121 .

[0110] The second air door 342 is slidably installed in the cavity 301 along the circumference of the housing 310 and is used to connect or block the second external air outlet 3112 with the second internal air outlet 3122 .

[0111] from Figure 8 and Fig. 9 It can be seen from the figure that the cross section of the cavity 301 in the radial direction of the housing 310 is C-shaped, and the first damper 341 and the second damper 342 are respectively arc-shaped strip sliders.

[0112] Further, in the circumferential direction of the impeller 320, the first damper 341 can cover and block the first outgoing air outlet 3111 and the first inner air outlet 3121, so as to control the connection and disconnection between the first air supply channel 141 and the inside of the housing 310 through the first damper 341. The second damper 342 can cover and block the second outgoing air outlet 3112 and the second inner air outlet 3122, so as to control the connection and disconnection between the second air supply channel 143 and the inside of the housing 310 through the second damper 342. The first damper 341 and the second damper 342 can jointly cover and block the air inlet 3124, so as to jointly control the connection and disconnection between the return air channel 142 and the inside of the housing 310 through the first damper 341 and the second damper 342.

[0113] like Figures 7 to 9 As shown, the outer shell 311 may be provided with a third outgoing air outlet 3113 , and the inner shell 312 may be provided with a third inner air outlet 3123 radially aligned with the third outgoing air outlet 3113 .

[0114] Further, any one of the first damper 341 and the second damper 342 can independently block the communication between the third external air outlet 3113 and the third internal air outlet 3123 .

[0115] Return to view Figure 3 The third outgoing air outlet 3113 is connected to the third air supply channel 144 , so that any one of the first air door 341 and the second air door 342 can control the connection between the third air supply channel 144 and the inside of the casing 310 .

[0116] Alternatively, those skilled in the art may also Figures 4 to 6 As shown in FIG. 1 , a separate third air door 710 is configured for the third air supply channel 144 , thereby eliminating the need to use the first air door 341 and / or the second air door 342 to control the connection between the third air supply channel 144 and the inside of the housing 310 .

[0117] like Fig.10 As shown, the fan 300 further includes a first driving device 350 for driving the first damper 341 to move and a second driving device 360 ​​for driving the second damper 342 to move.

[0118] from Figures 7 to 9 As can be seen in the figure, the outer shell 311 can be understood as a C-shaped cover, and covers the outer peripheral surface of the inner shell 312. In the present invention, the outer shell 311 and the inner shell 312 can also be made in one piece, or can be fixedly connected (for example, welding, fusion, etc.).

[0119] Specifically, a first arc-shaped opening 3125 is provided at one axial end of the inner shell 312. A first arc-shaped rack 3411 is provided at one axial end of the first damper 341, and the first rack 3411 passes through the first arc-shaped opening 3125 to be exposed outside the inner shell 312. The first driving device 350 includes a first motor 351 fixed to the housing 310 and a first gear set 352 drivingly connected to the first motor 351, and the first gear set 352 is meshed with the first rack 3411.

[0120] Correspondingly, a second arc-shaped opening 3126 is provided at one axial end of the inner shell 312. A second arc-shaped rack 3421 is provided at one axial end of the second damper 342, and the second rack 3421 passes through the second arc-shaped opening 3126 to be exposed outside the inner shell 312. The second driving device 360 ​​includes a second motor 361 fixed to the housing 310 and a second gear set 362 drivingly connected to the second motor 361, and the second gear set 362 is meshed with the second rack 3421.

[0121] from Fig.10 As can be seen, the first gear set 352 includes two meshing gears, one of which is fixedly connected to the first motor 351, and the other is rotatably connected to the axial end surface of the inner shell 312 and meshed with the first rack 3411. Correspondingly, the second gear set 362 includes two meshing gears, one of which is fixedly connected to the second motor 361, and the other is rotatably connected to the axial end surface of the inner shell 312 and meshed with the second rack 3421.

[0122] Further, in the present invention, the first motor 351 and the second motor 361 are stepping motors or servo motors, so as to determine the positions of the first damper 341 and the second damper 342 by controlling the rotation angles of the first motor 351 and the second motor 361 .

[0123] like Fig. 9 As shown, in the present invention, the fan 300 may further include a first position sensor 371 , a second position sensor 372 and a pressure sensor 373 .

[0124] When the first damper 341 and the second damper 342 jointly shield the air inlet 3124 of the fan 300 , the first position sensor 371 is triggered by the first damper 341 , the second position sensor 372 is triggered by the second damper 342 , and the pressure sensor 373 is triggered by the squeezing of the first damper 341 and the second damper 342 .

[0125] Exemplarily, the first position sensor 371, the second position sensor 372 and the pressure sensor 373 are all fixed on the inner shell 312. On the moving paths of the first damper 341 and the second damper 342, the first position sensor 371 and the second position sensor 372 do not interfere with the first damper 341 and the second damper 342; the pressure sensor 373 interferes with the first damper 341 and the second damper 342, respectively, so that the first damper 341 and the second damper 342 abut against the pressure sensor 373, respectively.

[0126] Furthermore, the first position sensor 371 and the second position sensor 372 are both Hall sensors, and corresponding magnets are respectively provided on the first damper 341 and the second damper 342, so as to trigger the first position sensor 371 and the second position sensor 372 through the magnets on the first damper 341 and the second damper 342. The pressure sensor 373 can be a piezoresistor or a pressure switch.

[0127] Return to view Figure 8 The end cover 330 is buckled on the outside of the first driving device 350 and the second driving device 360 ​​and is fixedly connected to the housing 310 .

[0128] Furthermore, the end cover 330 is a C-shaped structure as a whole, and an avoidance hole 331 is provided on the inner wall of the end cover 330 to avoid the first rack 3411 and the second rack 3421, or to avoid the first gear set 352 and the second gear set 362.

[0129] exist Figure 8 In the illustrated embodiment, the avoidance hole 331 of the end cover 330 is used to avoid the first rack 3411 and the second rack 3421 .

[0130] In addition, those skilled in the art may also configure the end cover 330 to any other feasible structure as needed, such as configuring the end cover 330 to be a hollow column with one axial end open and the other axial end closed, and fixing the open end of the end cover 330 to the casing 310 in a sealed manner, thereby enclosing the first rack 3411, the second rack 3421, the first drive device 350 and the second drive device 360, thereby preventing air leakage in the fan 300.

[0131] Based on the above description, those skilled in the art can understand that the fan 300 with the above structure in the present invention can allow the cold air in the refrigeration compartment 140 to enter at least one of the first storage compartment 131 , the second storage compartment 132 and the third storage compartment 133 .

[0132] It should be noted that the fan 300 described above in the present invention is a cross-flow fan.

[0133] In addition, those skilled in the art may also omit the setting of the housing 311 as needed, and make the first inner air outlet 3121, the second air outlet 152 and the third air outlet communicate with the first air supply channel 141, the second air supply channel 143 and the third air supply channel 144 respectively. Then, an independent damper is configured for the first air supply channel 141, the second air supply channel 143 and the third air supply channel 144 respectively to control the opening and closing of the first air supply channel 141, the second air supply channel 143 and the third air supply channel 144. At this time, the fan 300 can be set as a centrifugal fan, and the air inlet 3124 of the fan 300 leads to the inside of the impeller 320 (i.e., the inner side of the blades of the impeller 320).

[0134] like Figures 4 to 6 As shown, in some embodiments of the present invention, the refrigerator further includes a water receiving tray 400 arranged in the refrigeration compartment 140, and the water receiving tray 400 is disposed below the first plate evaporator 210 and the second plate evaporator 220 to receive water falling from the first plate evaporator 210 and the second plate evaporator 220.

[0135] like Figure 3 As shown, the water receiving tray 400 may be located above the first return air outlet 161 and the second return air outlet 162 .

[0136] Refer to the following Fig.11 The structure of the water receiving tray 400 in some embodiments of the present invention is illustrated by way of example.

[0137] like Fig.11 As shown, the water receiving tray 400 is provided with a first water receiving groove 401 located below the first plate evaporator 210, a second water receiving groove 402 located below the second plate evaporator 220, and a hollow structure 403 formed between the first water receiving groove 401 and the second water receiving groove 402, and the hollow structure 403 is used to allow air flow.

[0138] Continue reading Fig.11 The water receiving tray 400 is also provided with a connecting groove 404 that connects the first water receiving groove 401 with the second water receiving groove 402 . The connecting groove 404 is located at the rear ends of the first water receiving tray 400 and the second water receiving tray 400 .

[0139] Furthermore, a drainage hole 405 is provided on one of the first water receiving tray 400 and the second water receiving tray 400 or the connecting groove 404, and the drainage hole 405 leads to the evaporation dish 730 in the compressor compartment of the refrigerator through a pipeline.

[0140] Specific as Fig.11 As shown, the drainage hole 405 is disposed in the connection groove 404. Further, the height of the inner bottom surface of the connection groove 404 can be gradually reduced toward the direction close to the drainage hole 405, so that water can flow out from the drainage hole 405.

[0141] Furthermore, although not shown in the drawings, the water receiving tray 400 is configured to tilt downward from the front to the back so that the water on the water receiving tray 400 flows to the rear of the water receiving tray 400 , specifically, flows into the connecting groove 404 .

[0142] In addition, those skilled in the art may also configure the water tray 400 to any other feasible structure as needed, such as omitting the structure forming the connection groove 404 and forming the connection groove 404 on the rear side wall or bottom wall of the refrigeration compartment 140 .

[0143] Return to reference Figures 4 to 6 In some embodiments of the present invention, the refrigerator may further include an electric heating wire 600 , and the electric heating wire 600 is attached to at least one side of at least one of the first plate evaporator 210 and the second plate evaporator 220 .

[0144] Furthermore, electric heating wires 600 are attached to two side surfaces of the first plate evaporator 210 and the second plate evaporator 220 .

[0145] Go back and continue to refer to 2 and Figure 3 In some embodiments of the present invention, the refrigerator further includes a first water guide member 510 disposed on at least one side of the first plate evaporator 210, and the bottom end of the first water guide member 510 extends horizontally into the first water receiving groove 401. The refrigerator further includes a second water guide member 520 disposed on at least one side of the second plate evaporator 220, and the bottom end of the second water guide member 520 extends horizontally into the second water receiving groove 402.

[0146] Furthermore, first water guide members 510 are respectively disposed on both sides of the first plate type evaporator 210 , and second water guide members 520 are respectively disposed on both sides of the first plate type evaporator 210 .

[0147] from Figure 2 and Figure 3 It can be seen that the first water guiding member 510 is inclined downward in the left-right direction along a direction close to the first water receiving groove 401, and the second water guiding member 520 is inclined downward in the left-right direction along a direction close to the second water receiving groove 402.

[0148] Further, the first water guide member 510 on the left side of the first plate-type evaporator 210 abuts against the left side wall of the first air supply channel 141, so that the first water guide member 510 constitutes the bottom wall of the first air supply channel 141. Optionally, the first water guide member 510 abuts against or has a gap with the water receiving tray 400, and the gap between the first water guide member 510 and the water receiving tray 400 and the first plate-type evaporator 210 is small (for example, 1 mm, 3 mm, 5 mm, etc.), so that while ensuring the flow of condensed water, most of the cold air in the return air channel 142 enters the first air supply channel 141 through the fan 300. Alternatively, those skilled in the art can also make the first plate-type evaporator 210 and the first water guide member 510 abut against the water receiving tray 400 respectively, so that the bottom of the first air supply channel 141 is isolated from the return air channel 142.

[0149] Correspondingly, the second water guide member 520 on the left side of the second plate evaporator 220 abuts against the left side wall of the second air supply channel 143, so that the second water guide member 520 constitutes the bottom wall of the second air supply channel 143. Optionally, the second water guide member 520 abuts against or has a gap with the water receiving tray 400, and the gap between the second water guide member 520 and the water receiving tray 400 and the second plate evaporator 220 is small (for example, 1mm, 3mm, 5mm, etc.), so that most of the cold air in the return air channel 142 enters the second air supply channel 143 through the fan 300 while ensuring the flow of condensed water. Alternatively, those skilled in the art can also make the second plate evaporator 220 and the second water guide member 520 abut against the water receiving tray 400 respectively, so that the bottom of the second air supply channel 143 is isolated from the return air channel 142.

[0150] In the present invention, the first water guiding member 510 and / or the second water guiding member 520 may be a straight plate structure, a curved plate structure, or any other feasible structure.

[0151] Refer to the following Fig.12 The electric heating wire 600 in the present invention is used as an example.

[0152] like Figures 4 to 6 and Fig.12 As shown, the electric heating wire 600 may be arranged in a serpentine shape. Further, the electric heating wire 600 includes at least one straight segment 610, and the angle between the straight segment 610 and the horizontal plane is preferably greater than 0 degrees (for example, it may be 3 degrees, 5 degrees, 15 degrees, etc.), so that the condensed water or defrosted water flows downward along the straight segment 610. Alternatively, those skilled in the art may also make the angle between the straight segment 610 and the horizontal plane 0 degrees as required, that is, make the straight segment 610 parallel to the horizontal plane.

[0153] like Fig.12As shown, the electric heating wire 600 includes a first section 601, a second section 602 and a third section 603 from top to bottom, and the distance between two adjacent straight line sections 610 distributed in the first section 601, the second section 602 and the third section 603 decreases successively.

[0154] Further, in the present invention, the electric heating wire 600 can be a thin film heating wire. And, the electric heating wire 600 is attached to the first plate evaporator 210 or the second plate evaporator 220 through an aluminum foil tape (not shown in the figure). Specifically, both sides of the aluminum foil tape are sticky, one side of the aluminum foil tape is bonded to the first plate evaporator 210 or the second plate evaporator 220, and the other side of the aluminum foil tape is bonded to the electric heating wire 600. Alternatively, one side of the aluminum foil tape is sticky, and the sticky side of the aluminum foil tape is bonded to the electric heating wire 600 and the first plate evaporator 210 or the second plate evaporator 220 at the same time.

[0155] Alternatively, those skilled in the art may also configure the electric heating wire 600 as a tubular heating wire as needed, provide a slot or buckle on the first plate evaporator 210 or the second plate evaporator 220 , and insert the electric heating wire 600 into the slot or buckle.

[0156] In the present invention, the electric heating wire 600 is used to heat the first plate evaporator 210 or the second plate evaporator 220 when the first plate evaporator 210 or the second plate evaporator 220 is defrosted, so that the first plate evaporator 210 or the second plate evaporator 220 can be defrosted quickly.

[0157] Refer to the following Fig.13 and Fig.14 The refrigeration system 800 of the refrigerator of the present invention is described by way of example.

[0158] like Fig.13 As shown, a refrigeration system 800 of the present invention includes a compressor 810 , a condenser 820 , a first throttling component 831 , a first plate evaporator 210 , a second plate evaporator 220 , and a control valve group 840 .

[0159] The first throttling component 831 is an electronic expansion valve. Alternatively, those skilled in the art may also set the first throttling component 831 to a capillary tube as required.

[0160] The refrigeration system 800 is configured to realize the series connection or the parallel connection between the first plate evaporator 210 or the second plate evaporator 220 through the control valve group 840 .

[0161] Further, the control valve group 840 includes a first control valve 841 and a second control valve 842 , and each of the first control valve 841 and the second control valve 842 has an inlet and a plurality of outlets.

[0162] like Fig.13 As shown, the compressor 810, the condenser 820, the first control valve 841, the first throttling member 831, the first plate evaporator 210, the second control valve 842 and the second plate evaporator 220 are connected end to end in sequence to form a fluid loop. The first control valve 841 is also connected to the inlet fluid of the second plate evaporator 220 through one of its outlets. The second control valve 842 is also connected to the inlet fluid of the compressor 810 through one of its outlets.

[0163] Further, the refrigeration system 800 further includes a second throttling member 832. The outlet of the second throttling member 832 is fluidly connected to the second plate evaporator 220, and the inlet of the second throttling member 832 is fluidly connected to the first control valve 841, so that the second plate evaporator 220 is fluidly connected to the first control valve 841 through the second throttling member 832.

[0164] The second throttling component 832 is an electronic expansion valve. Alternatively, those skilled in the art may also configure the second throttling component 832 as a capillary tube as required.

[0165] Furthermore, the refrigeration system 800 also includes a multi-way control valve 850, and the first control valve 841, the second control valve 842, and the second plate evaporator 220 are respectively connected to the inlet of the multi-way control valve 850 through pipelines, and the outlet of the multi-way control valve 850 is connected to the inlet of the compressor 810 through a pipeline.

[0166] Furthermore, the first control valve 841 is also connected to the inlet fluid of the compressor 810 through a pipeline via one of its outlets.

[0167] In the present invention, the first control valve 841 , the second control valve 842 and the multi-way control valve 850 are all electrically controlled valves.

[0168] Fig.13 A refrigeration system 800 shown in FIG. 1 can operate in at least the following refrigeration modes:

[0169] Only the first plate evaporator 210 is refrigerated, and the refrigerant circulates along the following path (referred to as the first path): compressor 810 → condenser 820 → first control valve 841 → first throttling component 831 → first plate evaporator 210 → second control valve 842 → multi-way control valve 850 → compressor 810.

[0170] Only the second plate evaporator 220 performs cooling, and the refrigerant circulates along the following path (referred to as the second path): compressor 810 → condenser 820 → first control valve 841 → second throttling member 832 → second plate evaporator 220 → multi-way control valve 850 → compressor 810 .

[0171] The first plate evaporator 210 and the second plate evaporator 220 are refrigerated at the same time, and the refrigerant circulates along the following path (referred to as the third path): compressor 810 → condenser 820 → first control valve 841 → first throttling member 831 → first plate evaporator 210 → second control valve 842 → second plate evaporator 220 → multi-way control valve 850 → compressor 810. In addition, the refrigerant can also circulate along the first path and the second path at the same time.

[0172] like Fig.14 As shown, in another refrigeration system 800 of the present invention, the refrigeration system 800 may further include a gas-liquid separator 860. The gas-liquid separator 860 is fluidly connected to the first control valve 841, the second control valve 842, and the second throttling member 832, respectively, so that the first control valve 841 and the second control valve 842 are fluidly connected to the second throttling member 832 through the gas-liquid separator 860, respectively.

[0173] Furthermore, the gas-liquid separator 860 is also connected to an inlet of the multi-way control valve 850 through a pipeline, so that the gaseous refrigerant separated by the gas-liquid separator 860 can directly flow back to the return air port of the compressor 810.

[0174] Compared to Fig.13 The refrigeration system 800 shown in FIG. Fig.14 The refrigeration system 800 shown in FIG. 8 can also operate in the following refrigeration modes:

[0175] The second plate evaporator 220 is forced to cool, and the refrigerant circulates along the fourth path: compressor 810 → condenser 820 → first control valve 841 → first throttling component 831 → first plate evaporator 210 → second control valve 842 → gas-liquid separator 860 → second throttling component 832 → second plate evaporator 220 → multi-way control valve 850 → compressor 810. At the same time, the refrigerant also circulates along the fifth path: compressor 810 → condenser 820 → first control valve 841 → gas-liquid separator 860 → second throttling component 832 → second plate evaporator 220 → multi-way control valve 850 → compressor 810. And, the gaseous refrigerant in the gas-liquid separator 860 also flows along branch six: gas-liquid separator 860 → multi-way control valve 850. Refer to the following Figures 15 to 21 The refrigeration mode of the refrigerator in some embodiments of the present invention is described in detail.

[0176] like Fig.15As shown, when the refrigerator is just turned on or the first plate evaporator 210 and the second plate evaporator 220 are defrosted, the first damper 341 and the second damper 342 are in the first posture, so that the first damper 341 and the second damper 342 jointly shield the return air passage 142 to prevent the heat in the return air passage 142 from entering the first storage compartment 131, the second storage compartment 132 and the third storage compartment 133. At the same time, the first position sensor 371 is triggered by the first damper 341, the second position sensor 372 is triggered by the second damper 342, and the pressure sensor 373 is triggered by the compression of the first damper 341 and the second damper 342, so that the refrigerator can calibrate the positions of the first damper 341 and the second damper 342.

[0177] like Fig.16 As shown, when only the third storage compartment 133 needs to be refrigerated, the first damper 341 and the second damper 342 are in the second posture, so that the first damper 341 shields the first outgoing air outlet 3111, the second damper 342 shields the second outgoing air outlet 3112, the third outgoing air outlet 3113 is open, and cold air flows from the inside of the housing 310 to the third air supply passage 144. The refrigeration system 800 can operate according to any of the first path, the second path, and the third path described above.

[0178] like Fig.17 As shown, when the second storage compartment 132 and the third storage compartment 133 need to be refrigerated, the refrigeration system 800 can be operated according to any of the first path, the second path and the third path described above, preferably according to the second path. The first damper 341 shields the first outgoing air outlet 3111, and the second damper 342 shields a portion of the third outgoing air outlet 3113, and the cold air flows from the inside of the housing 310 to the second air supply channel 143 and the third air supply channel 144, respectively. The refrigeration system 800 can be operated according to any of the first path, the second path and the third path described above, preferably according to the second path.

[0179] like Fig.18 As shown, when the first storage compartment 131 and the third storage compartment 133 need to be refrigerated, the first damper 341 and the second damper 342 are in the fourth posture, so that the first damper 341 shields a part of the third outgoing air outlet 3113, and the second damper 342 shields the second outgoing air outlet 3112, and the cold air flows from the inside of the housing 310 to the first air supply passage 141 and the third air supply passage 144 respectively. The refrigeration system 800 can operate according to any of the first path, the second path, and the third path described above, preferably according to the first path.

[0180] like Fig.19As shown, when the first storage compartment 131 and the second storage compartment 132 need to be refrigerated, the first damper 341 and the second damper 342 are changed to the fifth posture, so that the first damper 341 and the second damper 342 abut and jointly shield the third outgoing air outlet 3113, and the cold air flows from the inside of the housing 310 to the first air supply channel 141 and the second air supply channel 143 respectively. The refrigeration system 800 can operate according to the third path described above, or operate according to the first path and the second path at the same time.

[0181] like Fig. 20 As shown, when only the second storage compartment 132 needs to be refrigerated, the first damper 341 and the second damper 342 are changed to the sixth posture, so that the first damper 341 shields the first outgoing air outlet 3111, and the second damper 342 shields the third outgoing air outlet 3113, and the cold air flows from the inside of the housing 310 to the second air supply channel 143. The refrigeration system 800 operates according to the second path described above.

[0182] When forced cooling of the second storage compartment 132 is required, the refrigeration system 800 operates simultaneously according to the fourth path, the fifth path and the branch six described above, so that the low-temperature refrigerant throttled and reduced in pressure by the first throttling component 831 is mixed with the refrigerant flowing out of the first control valve 841 at the gas-liquid separator 860, so that the refrigerant is supercooled before entering the second throttling component 832, so that the second plate evaporator 220 can obtain refrigerant with a lower temperature, forming a lower temperature condition.

[0183] like Fig.21 As shown, when only the first storage compartment 131 needs to be refrigerated, the first damper 341 and the second damper 342 are changed to the seventh posture, so that the first damper 341 shields the third outgoing air outlet 3113, and the second damper 342 shields the first outgoing air outlet 3111, and the cold air flows from the inside of the housing 310 to the first air supply channel 141. The refrigeration system 800 operates according to the first path described above.

[0184] It should be noted that, in the present invention, the types of the first storage room 131, the second storage room 132 and the third storage room 133 can be set as required in addition to the types described above. For example, the first storage room 131 can be set as a variable temperature room, the second storage room 132 can be set as a low temperature room (the temperature is lower than the freezing room), and the third storage room can be set as a freezing room.

[0185] like Fig. 22 As shown, in some embodiments of the present invention, the refrigerator also includes a controller 900, and the first motor 351, the second motor 361, the first position sensor 371, the second position sensor 372, the pressure sensor 373 and the electric heating wire 600 are respectively controlled and connected to the controller 900.

[0186] Further, in some embodiments of the present invention, the controller 900 is configured to control the first damper 341 and the second damper 342 to change to the first posture (such as Fig.15 As shown), the first damper 341 and the second damper 342 are calibrated.

[0187] The preset condition is that the refrigerator is turned on or the defrosting of the first plate evaporator 210 and the second plate evaporator 220 is completed. The preset condition may also be that the refrigerator receives a calibration instruction issued by the user.

[0188] Furthermore, the controller 900 may also be configured to control the first damper 341 and the second damper 342 to change to the second posture (eg, Fig.16 As shown), the first air door 341 covers the first outgoing air outlet 3111, and the second air door 342 covers the second outgoing air outlet 3112.

[0189] Furthermore, the controller 900 may also be configured to control the first damper 341 and the second damper 342 to change to a third posture (eg, Fig.17 As shown), the first air door 341 covers the first outgoing air outlet 3111, and the second air door 342 covers a portion of the third outgoing air outlet 3113.

[0190] Furthermore, the controller 900 may also be configured to control the first damper 341 and the second damper 342 to change to the fourth posture (eg, Fig.18 As shown), the first damper 341 covers a portion of the third outgoing air outlet 3113, and the second damper 342 covers the second outgoing air outlet 3112.

[0191] Furthermore, the controller 900 may also be configured to control the first damper 341 and the second damper 342 to change to the fifth posture (eg, Fig.19 As shown), the first air door 341 and the second air door 342 abut against each other and jointly shield the third outgoing air outlet 3113.

[0192] Furthermore, the controller 900 may also be configured to control the first damper 341 and the second damper 342 to change to the sixth posture (eg, Fig. 20 As shown), the first air door 341 covers the first outgoing air outlet 3111, and the second air door 342 covers the third outgoing air outlet 3113.

[0193] Furthermore, the controller 900 may also be configured to control the first damper 341 and the second damper 342 to change to the seventh posture (eg, Fig.21 As shown), the first air door 341 covers the third outgoing air outlet 3113, and the second air door 342 covers the first outgoing air outlet 3111.

[0194] It should be noted that a certain storage room described above needs to be refrigerated, specifically, the temperature in the corresponding storage room is higher than the preset temperature value. For example, the first storage room 131 is a freezer room. When the temperature therein is higher than -16°C (or any other feasible temperature), the first storage room 131 needs to be refrigerated. When the temperature therein drops to -18°C (or any other feasible temperature), the first storage room 131 stops refrigeration. The second storage room 132 is a variable temperature room. When the temperature therein is higher than 0°C (or any other feasible temperature), the second storage room 132 needs to be refrigerated. When the temperature therein drops to -4°C (or any other feasible temperature), the second storage room 132 stops refrigeration. The third storage room 133 is a variable temperature room. When the temperature therein is higher than 5°C (or any other feasible temperature), the third storage room 133 needs to be refrigerated. When the temperature therein drops to 1°C (or any other feasible temperature), the third storage room 133 stops refrigeration.

[0195] Furthermore, in some other embodiments of the present invention, the third storage compartment 133 is a refrigerating compartment, and the controller 900 can also be configured to: when the refrigerator meets the defrosting condition, first control the first air door 341 and the second air door 342 to change to Fig.16 When the temperature of at least one of the first plate evaporator 210 and the second plate evaporator 220 rises to a preset temperature, the first damper 341 and the second damper 342 are controlled to change to the second position. Fig.15 The first posture is shown, so that the first damper 341 and the second damper 342 jointly shield the air inlet 3124 of the fan 300. The electric heating wire 600 is controlled to be energized to heat the first plate evaporator 210 and the second plate evaporator 220 until the electric heating wire 600 works for a preset time, or the temperature of the first plate evaporator 210 and the second plate evaporator 220 reaches the maximum defrosting temperature.

[0196] Among them, the defrost condition can be that the refrigerator has been running for a preset time (for example, 7 days, 10 days, 15 days, etc.) since the last defrost to the current time, and / or the number of door openings and closings has reached a preset number of times (for example, 20 times, 50 times, 65 times, etc.).

[0197] The preset temperature may be any feasible temperature lower than the refrigeration temperature of the third storage compartment 133 (refrigeration compartment), for example, -10°C, -5°C, -4°C, -1°C, etc.

[0198] The preset time length may be any time length required for defrosting of the first plate evaporator 210 and the second plate evaporator 220 to be completed, such as 10 minutes, 20 minutes, 35 minutes, etc.

[0199] The maximum defrosting temperature may be any temperature that ensures that the first plate evaporator 210 and the second plate evaporator 220 are defrosted completely, such as 3° C., 5° C., 10° C., 15° C., etc.

[0200] It is understood by those skilled in the art that when the first damper 341 and the second damper 342 are switched to Fig.16 In the second posture shown, the air circulates between the third storage compartment 133 (refrigeration compartment) and the return air channel 142. Since the temperature of the air in the third storage compartment 133 (refrigeration compartment) is higher than the temperature of the first plate evaporator 210 and the second plate evaporator 220, the heat in the third storage compartment 133 (refrigeration compartment) will enter the refrigeration compartment 140 and heat the first plate evaporator 210 and the second plate evaporator 220, thereby increasing the temperature of the first plate evaporator 210 and the second plate evaporator 220. It can be seen that the present invention reasonably utilizes the cooling capacity of the first plate evaporator 210 and the second plate evaporator 220, thereby reducing the energy consumption when the refrigerator defrosts.

[0201] In addition, those skilled in the art may also set at least one of the first storage compartment 131 and the second storage compartment 132 as a refrigeration compartment as needed, and control the first damper 341 and the second damper 342 to change to other postures so that the fan 300 only cools the refrigeration compartment, so as to defrost the first plate evaporator 210 and the second plate evaporator 220.

[0202] Furthermore, in some other embodiments of the present invention, the refrigerator may also include a windshield structure 740, and the windshield structure 740 is provided in at least one of the first air supply channel 141, the return air channel 142 and the second air supply channel 143, so that the corresponding air duct can be limited to a bent channel through the windshield structure 740, thereby extending the length of the corresponding air duct.

[0203] Optionally, a windshield structure 740 is provided in the first air supply channel 141, the return air channel 142, and the second air supply channel 143, respectively. Fig.23 The return air duct 142 is taken as an example for description.

[0204] like Fig.23As shown, a windshield structure 740 is provided in the return air channel 142. The windshield structure 740 is specifically a plurality of partitions extending forward and backward. The partitions abut against two inner wall surfaces of the return air channel 142 in the left and right directions respectively, thereby limiting the return air channel 142 to a bent channel.

[0205] It will be understood by those skilled in the art that the present invention limits the corresponding air duct to a curved channel through the windshield structure 740, thereby extending the length of the corresponding air duct and thus increasing the flow rate of the air in the corresponding air duct, so that each part of the first plate evaporator 210 and the second plate evaporator 220 is in contact with a larger amount of air, thereby improving the heat exchange efficiency between the air and the corresponding evaporator.

[0206] So far, the technical solution of the present invention has been described in combination with the above multiple embodiments, but it is easy for those skilled in the art to understand that the protection scope 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 split and combine the technical solutions in the above embodiments, and can also make equivalent changes or replacements to the relevant technical features. Any changes, equivalent replacements, improvements, etc. made within the technical concept and / or technical principles of the present invention will fall within the protection scope of the present invention.

[0207] Finally, it should be noted that the refrigerator of the present invention is a refrigerator in a broad sense, which not only includes the so-called refrigerator in a narrow sense, but also includes fresh-keeping equipment with refrigeration and / or freezing functions, such as refrigerators, freezers, etc.

[0208] In the present invention, the term "communication" means fluid communication, so as to allow fluid (such as air, liquid) to flow between two connected objects. And the "communication" can be to allow the fluid to flow between the two connected objects without leakage, or to allow the fluid to flow between the two connected objects with a little leakage.

Claims

1. A refrigerator, comprising: The box body defines a first storage compartment, a refrigeration compartment, and a second storage compartment sequentially distributed along a first direction; A first plate evaporator and a second plate evaporator are sequentially arranged in the refrigerating compartment along the first direction to divide the refrigerating compartment into a first air supply channel, a return air channel, and a second air supply channel sequentially distributed along the first direction, the first air supply channel is communicated with the first storage compartment and the return air channel respectively, the second air supply channel is communicated with the second storage compartment and the return air channel respectively, and the return air channel is communicated with the first storage compartment and the second storage compartment respectively; a fan, for driving air from the first storage compartment and / or the second storage compartment to the return air passage, and causing the air in the return air passage to flow to the first storage compartment via the first air supply passage and / or to flow to the second storage compartment via the second air supply passage.

2. The refrigerator according to claim 1, wherein: The first direction is parallel to the left-right direction of the refrigerator.

3. The refrigerator according to claim 2, wherein: A plurality of first air outlets are provided on the side wall between the first air supply channel and the first storage compartment. A plurality of second air outlets are arranged on the side wall between the second air supply channel and the second storage compartment.

4. The refrigerator according to claim 3, wherein: The plurality of first air outlets include a plurality of first front air outlets and a plurality of first rear air outlets, the plurality of first front air outlets are arranged adjacent to the opening of the first storage compartment, the plurality of first rear air outlets are arranged away from the opening of the first storage compartment, and the opening area of ​​the first front air outlet is larger than the opening area of ​​the first rear air outlet; and / or, The multiple second air outlets include multiple second front air outlets and multiple second rear air outlets, the multiple second front air outlets are arranged adjacent to the opening of the second storage compartment, the multiple second rear air outlets are arranged away from the opening of the second storage compartment, and the opening area of ​​the second front air outlet is larger than the opening area of ​​the second rear air outlet.

5. The refrigerator according to claim 2, wherein: The fan is arranged at the connection between the first air supply channel, the return air channel and the second air supply channel, and is located above the first plate evaporator and the second plate evaporator.

6. The refrigerator according to claim 5, wherein: The return air passage is provided with a first return air outlet communicating with the first storage compartment and a second return air outlet communicating with the second storage compartment at a position away from the fan.

7. The refrigerator according to claim 1, wherein: The refrigerator further includes a damper assembly configured to allow air in the return air passage to flow toward at least one of the first storage compartment and the second storage compartment.

8. The refrigerator according to claim 2, wherein: The refrigerator further includes a water receiving pan arranged in the refrigerating compartment, wherein the water receiving pan is disposed below the first plate evaporator and the second plate evaporator to receive water falling from the first plate evaporator and the second plate evaporator.

9. The refrigerator according to claim 8, wherein: The water receiving tray is provided with a first water receiving groove located below the first plate evaporator, a second water receiving groove located below the second plate evaporator, and a hollow structure formed between the first water receiving groove and the second water receiving groove, wherein the hollow structure is used to allow air flow.

10. The refrigerator according to claim 9, wherein: The water receiving tray is configured to be tilted downward from the front to the rear, so that the water on the water receiving tray flows to the rear of the water receiving tray.

11. The refrigerator according to claim 2, wherein: The box body also defines a third storage compartment located above the return air duct. The fan is also configured to drive the air in the return air passage into the third storage compartment.

12. The refrigerator according to any one of claims 1 to 11, wherein: The fan is a cross-flow fan or a centrifugal fan.

13. The refrigerator according to any one of claims 2 to 11, wherein: The box body includes a vertical beam located between the first storage compartment and the second storage compartment in the left-right direction, and the vertical beam is located at the front side of the refrigeration compartment.

14. The refrigerator according to claim 13, wherein: The width of the vertical beam is less than or equal to the distance between two adjacent walls of the first storage compartment and the second storage compartment.

15. The refrigerator according to any one of claims 1 to 11, wherein: At least two sides of the first plate evaporator that are opposite to each other in the extension direction are in contact with the inner wall surface of the refrigeration compartment; and / or, At least two side edges of the second plate-type evaporator that are opposite to each other in the extending direction abut against the inner wall surface of the refrigerating chamber.

16. The refrigerator according to any one of claims 1 to 11, wherein: The refrigerator also includes a windshield structure, and the windshield structure is arranged in at least one of the first air supply channel, the return air channel and the second air supply channel, so that the corresponding air channel is limited to a bent channel by the windshield structure, thereby extending the length of the corresponding air channel.

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