CN221122671U - Fan for refrigerator and refrigerator with fan - Google Patents

Abstract

The utility model belongs to the technical field of refrigeration equipment, and particularly provides a fan for a refrigerator and the refrigerator with the fan. The utility model aims at solving the problem that the prior refrigerator is unfavorable for the modularized production of the refrigerator because each storage compartment is provided with a group of air doors independently. The fan of the present utility model includes a housing having an outer housing and an inner housing, an impeller mounted in the inner housing, a first damper, and a second damper. A cavity is defined between the outer shell and the inner shell, a first air outlet and a second air outlet are arranged on the peripheral wall of the outer shell, and a first inner air outlet which is aligned with the first air outlet in the radial direction and a second inner air outlet which is aligned with the second air outlet in the radial direction are arranged on the peripheral wall of the inner shell. The peripheral wall of the inner shell is also provided with an air inlet, and the side wall of the air inlet extends to the outer side of the outer shell along the radial direction. The first damper and the second damper are slidably mounted in the cavity along a circumferential direction of the casing. The utility model enables the fan and the air door to be a module, and overcomes the technical problems.

Description

Fan for refrigerator and refrigerator with fan

Technical Field

The utility model belongs to the technical field of refrigeration equipment, and particularly provides a fan for a refrigerator and the refrigerator with the fan.

Background

The existing air-cooled refrigerator generally transmits cold air near an evaporator to different storage compartments through a fan. To achieve independent cooling of each compartment, a set of dampers is typically provided for each compartment individually to control the opening and closing of the air path between the blower and the compartment through the set of dampers.

However, a group of air doors are independently arranged for each storage compartment, so that more parts of the refrigerator are caused, the assembly is complex, and the modularized production of the refrigerator is not facilitated. In particular, in an air-cooled refrigerator in which a refrigerating compartment is provided between left and right storage compartments, the thickness of the refrigerating compartment and/or the side wall thereof is increased by a large number of parts, and the effective volume of the refrigerator is affected.

Disclosure of utility model

An object of the present utility model is to solve the problem that the existing refrigerator is unfavorable for the modularized production of the refrigerator because each storage compartment is separately provided with a group of air doors.

A further object of the present utility model is to improve the space utilization of existing refrigerators.

It is still a further object of the present utility model to improve the heat exchange efficiency of an evaporator.

To achieve the above object, the present utility model provides in a first aspect a blower for a refrigerator, comprising:

The shell comprises an outer shell and an inner shell, a cavity is defined between the outer shell and the inner shell, a first air outlet and a second air outlet are arranged on the peripheral wall of the outer shell, and a first inner air outlet aligned with the first air outlet in the radial direction and a second inner air outlet aligned with the second air outlet in the radial direction are arranged on the peripheral wall of the inner shell; an air inlet is further formed in the peripheral wall of the inner shell, and the side wall of the air inlet extends to the outer side of the outer shell in the radial direction;

an impeller rotatably mounted in the inner housing;

a first damper slidably installed in the cavity in a circumferential direction of the casing and adapted to communicate or block the first outlet with the first inner outlet;

and a second damper slidably installed in the cavity in a circumferential direction of the casing and adapted to communicate or block the second outer air outlet with the second inner air outlet.

Optionally, a third air outlet is further provided on the outer shell, a third inner air outlet aligned with the third air outlet in a radial direction is further provided on the inner shell, and the fan is configured to enable any one of the first air door and the second air door to individually block communication between the third air outlet and the third inner air outlet.

Optionally, the fan further comprises a first driving device for driving the first air door to move and a second driving device for driving the second air door to move.

Optionally, a first arc opening is formed at one end of the inner shell in the axial direction; one end of the first air door in the axial direction is provided with an arc-shaped first rack, and the first rack penetrates through the first arc-shaped opening to be exposed out of the inner shell; the first driving device comprises a first motor fixed on the shell and a first gear set in driving connection with the first motor, and the first gear set is meshed with the first rack; a second arc-shaped opening is formed in one axial end of the inner shell; one end of the second air door in the axial direction is provided with an arc-shaped second rack, and the second rack penetrates through the second arc-shaped opening to be exposed out of the inner shell; the second driving device comprises a second motor fixed on the shell and a second gear set in driving connection with the second motor, and the second gear set is meshed with the second rack.

Optionally, the fan further comprises an end cover, and the end cover is buckled on the outer sides of the first driving device and the second driving device and is fixedly connected with the shell.

Optionally, the end cover is of a C-shaped structure as a whole, and an avoidance hole is formed in an inner side wall of the end cover so as to avoid the first rack and the second rack, or avoid the first gear set and the second gear set.

Optionally, the cross section of the cavity in the radial direction of the casing is C-shaped.

The present utility model provides in a second aspect a refrigerator comprising:

A case defining a first storage compartment, a refrigerating compartment, and a second storage compartment sequentially distributed in a left-right direction;

The first plate type evaporator and the second plate type evaporator are sequentially arranged in the refrigerating compartment along the left-right direction so as to divide the refrigerating compartment into a first air supply channel, a return air channel and a second air supply channel which are sequentially distributed along the left-right direction, wherein the first air supply channel is communicated with the first storage compartment, the second air supply channel is communicated with the second storage compartment, and the return air channel is respectively communicated with the first storage compartment and the second storage compartment;

The fan according to any one of the first aspect except the first aspect, wherein the fan is disposed in the refrigeration compartment, the first air outlet is communicated with the first air supply channel, the second air outlet is communicated with the second air supply channel, and the air inlet is communicated with the return air channel.

Optionally, two opposite sides of the side wall of the air inlet extending to the outer side of the shell are respectively abutted with the first plate type evaporator and the second plate type evaporator.

Optionally, the box body further defines a third storage compartment located above the first storage compartment, the refrigeration compartment and the second storage compartment, a third air supply channel communicated with the third storage compartment, and a connecting air duct communicating the third storage compartment with the return air channel; and a third air outlet of the fan is communicated with the third air supply channel.

Based on the foregoing description, it can be understood by those skilled in the art that, in the foregoing technical solution of the present utility model, by defining a cavity between an outer casing and an inner casing of a casing, and providing a first air outlet and a second air outlet on a peripheral wall of the outer casing, and providing a first inner air outlet aligned with the first air outlet in a radial direction and a second inner air outlet aligned with the second air outlet in a radial direction on a peripheral wall of the inner casing; the air inlet is further formed in the peripheral wall of the inner shell, the side wall of the air inlet extends to the outer side of the outer shell in the radial direction, and the first air door and the second air door are arranged in the cavity in a sliding mode along the circumferential direction of the shell, so that the first air outlet is communicated with or blocked from the first inner air outlet, and the second air outlet is communicated with or blocked from the second inner air outlet. Therefore, the fan integrates the function of the air door, so that the fan and the air door can be integrated into a whole, and the modularized production of the refrigerator is facilitated.

Further, by arranging the refrigerating compartment between the first storage compartment and the second storage compartment, compared with the existing refrigerator, the utility model utilizes the ineffective space of the partition plate in the existing refrigerator, and improves the space utilization rate of the refrigerator.

Still further, by arranging the first plate-type evaporator and the second plate-type evaporator in the cooling compartment in the right-and-left direction in order, the cooling compartment is partitioned into a first air supply passage, a return air passage and a second air supply passage which are distributed in the right-and-left direction in order. The first air supply channel is respectively communicated with the first storage room and the air return channel, the second air supply channel is respectively communicated with the second storage room and the air return channel, the air return channel is respectively communicated with the first storage room and the second storage room, air can flow from the first storage room to the air return channel, air in the air return channel flows to the first storage room through the first air supply channel, air can flow from the second storage room to the air return channel, and air in the air return channel flows to the second storage room through the second air supply channel.

As will be appreciated by those skilled in the art, in the present utility model, the two flow paths described above allow air to flow through each of the two sides of the first plate type evaporator and the second plate type evaporator, thereby improving the refrigeration efficiency of the first plate type evaporator and the second plate type evaporator for air. And the flow directions of the air at two sides of the first plate type evaporator and the second plate type evaporator are opposite, so that the temperature of the first plate type evaporator and the second plate type evaporator is more uniform on the whole in the working process, and further the frosting quantity of the first plate type evaporator and the second plate type evaporator is more uniform. Compared with the prior art, the air flows from one end of the evaporator to the other end, so that the problems that a certain part of the evaporator is more in frosting quantity and is easy to block the air duct and further wind resistance is increased are effectively solved.

Other advantages of the present utility model will be described in detail hereinafter with reference to the drawings so that those skilled in the art can more clearly understand the improvements object, features and advantages of the present utility model.

Drawings

In order to more clearly illustrate the technical solution of the present utility model, some embodiments of the present utility model will be described hereinafter with reference to the accompanying drawings. It will be understood by those skilled in the art that components or portions thereof identified in different drawings by the same reference numerals are identical or similar; the drawings of the utility model are not necessarily to scale relative to each other. In the accompanying drawings:

Fig. 1 is a schematic view showing the effect of a refrigerator body of a refrigerator according to the present utility model;

FIG. 2 is a cross-sectional view of a refrigerator in accordance with some embodiments of the present utility model taken along the direction A-A in FIG. 1;

Fig. 3 is an enlarged view of a portion B in fig. 2;

Fig. 4 is a sectional view of the refrigerator of fig. 2 taken along the direction C-C;

Fig. 5 is a sectional view of the refrigerator of fig. 2 in the direction D-D;

FIG. 6 is a cross-sectional view of a refrigerator in accordance with other embodiments of the present utility model taken along the direction A-A in FIG. 1;

FIG. 7 is an isometric view of a blower in some embodiments of the utility model;

FIG. 8 is an isometric cross-sectional view taken along the direction E-E in FIG. 7;

FIG. 9 is a cross-sectional view taken along the direction E-E in FIG. 7;

FIG. 10 is an end view of the fan of FIG. 7 in the direction F (with the end cap removed);

FIG. 11 is an isometric view of a drip tray in some embodiments of the present utility model;

FIG. 12 is a schematic view showing the effect of the electric heating wire of the present utility model;

FIG. 13 is a schematic diagram of a refrigeration system according to some embodiments of the utility model;

FIG. 14 is a schematic diagram of another refrigeration system according to some embodiments of the utility model;

Fig. 15 is a schematic view of a refrigerator in a first posture according to some embodiments of the present utility model;

fig. 16 is a schematic view of refrigeration for a refrigerator in a second posture in some embodiments of the present utility model;

fig. 17 is a schematic view of refrigeration for a refrigerator in a third posture in some embodiments of the present utility model;

Fig. 18 is a schematic view of refrigeration for a refrigerator in a fourth posture in some embodiments of the present utility model;

fig. 19 is a schematic view of a refrigerator in a fifth posture in some embodiments of the present utility model;

Fig. 20 is a schematic view of refrigeration for a refrigerator in a sixth posture in some embodiments of the present utility model;

Fig. 21 is a schematic view of refrigeration for a refrigerator in a seventh posture in some embodiments of the present utility model;

FIG. 22 is a schematic block diagram of an appliance portion of a refrigerator in some embodiments of the present utility model;

fig. 23 is a schematic view of a gear structure in accordance with still other embodiments of the present utility model.

Detailed Description

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

It should be noted that, in the description of the present utility model, terms such as "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships, which are based on the directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. 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.

Further, it should also be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, 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; can be directly connected, can be indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances. For example, the terms "mounted," "connected," and "secured" as used herein, unless otherwise indicated, may specifically be any suitable form of connection such as bolting, screwing, welding, plugging, riveting, welding, clamping, etc.

In addition, it should be noted that, in the description of the present utility model, the terms "cooling capacity" and "heating capacity" are two descriptions of the same physical state. That is, the higher the "cooling capacity" of a certain object (for example, evaporator, air, condenser, etc.), the lower the "heat" of the object, and the lower the "cooling capacity" of the object, the higher the "heat" of the object. Some object absorbs the cold and releases the heat, and the object releases the cold and absorbs the heat. A target maintains "cold" or "heat" to maintain the target at a current temperature. "refrigeration" and "heat absorption" are two descriptions of the same physical phenomenon, i.e., a target (e.g., an evaporator) absorbs heat while it is refrigerating.

The blower and the refrigerator according to the present utility model will be described with reference to fig. 1 to 23.

As shown in fig. 1, in the present utility model, the refrigerator includes a cabinet 100, and the cabinet 100 may be divided into an upper portion (a portion above a dash-dot line in the drawing) and a lower portion (a portion below the dash-dot line in the drawing) as a whole. Wherein, the lower part is defined with a first storage compartment 131 and a second storage compartment 132, and the upper part is defined with a third storage compartment 133.

Wherein the first, second and third storage compartments 131, 132 and 133 may each be a freezing compartment, a refrigerating compartment or a temperature changing compartment.

In some embodiments of the present utility model, the first storage compartment 131 may be a variable temperature compartment, the second storage compartment 132 may be a freezer compartment, and the third storage compartment 133 may be a refrigerator compartment.

With continued reference to fig. 1, the lower portion of the cabinet 100 includes a vertical beam 120 and a partition plate 110 at a rear side of the vertical beam 120, and the first storage compartment 131 and the second storage compartment 132 are respectively located at left and right sides of the partition plate 110, and thus the first storage compartment 131 and the second storage compartment 132 are partitioned in a left-right direction of the refrigerator by the partition plate 110.

The case 100 shown in the drawings of the present utility model is intended to help those skilled in the art understand the technical solution of the present utility model, and does not represent that the case 100 of the present utility model can only be configured as shown in the drawings. In addition to the case 100 shown in the drawings, the person skilled in the art can arrange the case 100 of the present utility model in any other possible form as required. For example, one more storage compartment is provided at the left, right or upper side of the third storage compartment 133.

As shown in fig. 2 and 3, in some embodiments of the present utility model, the case 100 further defines a refrigerating compartment 140, and the refrigerating compartment 140 is located between the first storage compartment 131 and the second storage compartment 132.

Further, the refrigerating compartment 140 is located at the rear side of the vertical beam 120. The refrigerating compartment 140 is formed in the partition 110 such that the refrigerating compartment 140 and the first storage compartment 131 have the same sidewall and the refrigerating compartment 140 and the second storage compartment 132 have the same sidewall.

Although not explicitly shown in the drawings, in some embodiments of the present utility model, the width of the vertical beam 120 is less than or equal to the distance between two wall surfaces of the first and second storage compartments 131 and 132 adjacent to each other, so that the refrigerator makes full use of the space inside thereof, and the space utilization of the refrigerator is improved.

With continued reference to fig. 2 and 3, in some embodiments of the present utility model, the refrigerator further includes first and second plate evaporators 210 and 220, which are sequentially disposed in the left-right direction within the refrigerating compartment 140 to divide the refrigerating compartment 140 into first and second air supply passages 141, 142 and 143 sequentially distributed in the left-right direction. The first air supply path 141 communicates with the first storage compartment 131 and the return air path 142, respectively, the second air supply path 143 communicates with the second storage compartment 132 and the return air path 142, respectively, and the return air path 142 communicates with the first storage compartment 131 and the second storage compartment 132, respectively.

Wherein the first plate type evaporator 210 and the second plate type evaporator 220 each have a plate shape or a sheet shape as a whole, and opposite sides of the extending direction thereof can be separated therefrom. In short, each of the first and second plate-type evaporators 210 and 220 may be understood as a plate-like or plate-like structure having no through-holes in its thickness direction as a whole.

As will be appreciated by those skilled in the art, the first air supply path 141, the return air path 142 and the second air supply path 143 are formed such that a space is provided between the first plate type evaporator 210 and the second plate type evaporator 220, and between the side surfaces of the first plate type evaporator 210 and the second plate type evaporator 220 facing away from each other and the inner wall surface of the refrigerating compartment 140.

Further, as shown in fig. 3, in some embodiments of the present utility model, a plurality of first air outlets 151 are provided on a sidewall between the first air supply passage 141 and the first storage compartment 131, and a plurality of second air outlets 152 are provided on a sidewall between the second air supply passage 143 and the second storage compartment 132.

As shown in fig. 4, in some embodiments of the present utility model, the plurality of first air outlets 151 may further include a plurality of first front air outlets 1511 and a plurality of first rear air outlets 1512, the plurality of first front air outlets 1511 being disposed adjacent to the opening of the first storage compartment 131, the plurality of first rear air outlets 1512 being disposed away from the opening of the first storage compartment 131, the opening area of the first front air outlets 1511 being larger than the opening area of the first rear air outlets 1512.

As shown in fig. 5, in some embodiments of the present utility model, the plurality of second air outlets 152 may further include a plurality of second front air outlets 1521 and a plurality of second rear air outlets 1522, the plurality of second front air outlets 1521 being disposed adjacent to the opening of the second storage compartment 132, the plurality of second rear air outlets 1522 being disposed away from the opening of the second storage compartment 132, the second front air outlets 1521 having an opening area larger than the opening area of the second rear air outlets 1522.

As can be appreciated by those skilled in the art, 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 cooling capacity obtained from the front portions of the first and second storage compartments 131 and 132 is increased, and after the refrigerator opens and closes the door 720 of the first and second storage compartments 131 and 132, the front portions of the first and second storage compartments 131 and 132 can be rapidly cooled.

As shown in fig. 3, in some embodiments of the present utility model, the refrigerator further includes a blower 300, and the blower 300 is disposed at the junction between the first air supply path 141, the return air path 142, and the second air supply path 143, and above the first plate type evaporator 210 and the second plate type evaporator 220. The return air duct 142 is provided with a first return air inlet 161 communicating with the first storage compartment 131 and a second return air inlet 162 communicating with the second storage compartment 132 at a position distant from the blower 300.

As will be appreciated by those skilled in the art, when the first storage compartment 131 requires refrigeration, the blower 300 may drive the air to circulate along the following paths: first storage compartment 131→first return air inlet 161→return air duct 142→first air supply duct 141→first air outlet 151→first storage compartment 131. When the second storage compartment 132 requires refrigeration, the blower 300 may drive the air to circulate along the following paths: the second storage compartment 132→the second return air inlet 162→the return air duct 142→the second air supply duct 143→the second air outlet 152→the second storage compartment 132.

As shown in fig. 2, in some embodiments of the present utility model, the third storage compartment 133 is located above the first storage compartment 131, the cooling compartment 140, and the second storage compartment 132.

The cabinet 100 further defines a third storage compartment 133 located above the first storage compartment 131, the refrigerating compartment 140, and the second storage compartment 132, a third air supply duct 144 communicating with the third storage compartment 133, and a connection duct 145 communicating the third storage compartment 133 with the return air duct 142

As shown in fig. 4 and 5, in some embodiments of the present utility model, the case 100 further defines a third air supply passage 144 that communicates the third storage compartment 133 with the return air passage 142 such that air in the return air passage 142 enters the third storage compartment 133 through the third air supply passage 144 by the blower 300.

Further, although not shown, in some embodiments of the present utility model, the case 100 further defines a third return air passage 142 that communicates the third storage compartment 133 with the return air passage 142, so that air in the third storage compartment 133 flows back into the return air passage 142 through the third return air passage 142 by the blower 300.

Furthermore, in other embodiments of the present utility model, the third storage compartment 133 may be provided in any other possible form as required by those skilled in the art, for example, the above-described vertically disposed relationship of the first storage compartment 131, the second storage compartment 132, and the third storage compartment 133 is inverted, that is, the third storage compartment 133 is provided below the first storage compartment 131 and the second storage compartment 132.

As can be seen from fig. 4 and 5, in some embodiments of the present utility model, the size of the return air duct 142 is smaller than the size of the refrigerating compartment 140 in the front-rear direction of the refrigerator; the size of the return air duct 142 is also smaller than the size of the refrigerating compartment 140 in the up-down direction of the refrigerator.

It should be noted that the dimensions of the return air duct 142 and the dimensional relationships of the first plate type evaporator 210 and the second plate type evaporator 220 with respect to the return air duct 142 shown in fig. 4 and 5 are merely for illustrating the return air duct 142, the first air supply duct 141 (or the second air supply duct 143), the first air outlet 151 (or the second air outlet 152), the first air return opening 161 (or the second air return opening 162) and the first plate type evaporator 210 (or the second plate type evaporator 220) in the same drawing, so as to be convenient for a person skilled in the art to understand.

Accordingly, if the first plate type evaporator 210 and the second plate type evaporator 220 divide the refrigerating compartment 140 into the first air supply path 141, the return air path 142 and the second air supply path 143 which are sequentially arranged in the left-right direction, those skilled in the art can appropriately adjust the structures related thereto as needed.

For example, in other embodiments shown in fig. 6, at least two sides of the first plate evaporator 210 opposite to each other in the extending direction are abutted against the inner wall surface of the refrigerating compartment 140; and/or at least two sides of the second plate evaporator 220 opposite to each other in the extending direction are abutted against the inner wall surface of the refrigerating compartment 140.

As shown in fig. 6, the return air duct 142 has a size equal to that of the refrigerating compartment 140 in the front-rear direction of the refrigerator, and the front end of the first plate type evaporator 210 (and the second plate type evaporator 220) may be abutted against the front inner wall surface of the refrigerating compartment 140, and the rear end of the first plate type evaporator 210 (and the second plate type evaporator 220) may be abutted against the rear inner wall surface of the refrigerating compartment 140. The top and bottom ends of the first and second plate evaporators 210 and 220, respectively, have gaps with the upper and lower inner wall surfaces of the refrigerating compartment 140, respectively, to arrange the blower fan 300, the water pan 400, etc.

The blower 300 of the present utility model will be described in detail with reference to fig. 7 to 10.

As shown in fig. 7 to 9, the blower 300 of the present utility model includes a casing 310, an impeller 320, an end cap 330, and a damper assembly 340.

As shown in fig. 8 and 9, the casing 310 includes an outer casing 311 and an inner casing 312, a cavity 301 is defined between the outer casing 311 and the inner casing 312, a first outer air outlet 3111 and a second outer air outlet 3112 are provided on a peripheral wall of the outer casing 311, and a first inner air outlet 3121 aligned with the first outer air outlet 3111 in a radial direction and a second inner air outlet 3122 aligned with the second outer air outlet 3112 in a radial direction are provided on a peripheral wall of the inner casing 312. The peripheral wall of the inner shell 312 is further provided with an air inlet 3124, and a side wall of the air inlet 3124 extends to the outside of the outer shell 311 in a radial direction.

Referring back to fig. 3, the first air outlet 3111 communicates with the first air supply duct 141, the second air outlet 3112 communicates with the second air supply duct 143, and the air inlet 3124 communicates with the return duct 142.

Further, two opposite sides of the sidewall of the air inlet 3124 extending to the outside of the housing 311 may respectively abut against the first plate evaporator 210 and the second plate evaporator 220.

As shown in fig. 7 to 9, the impeller 320 is rotatably installed in the inner case 312 to drive air from the air inlet 3124 into the inner case 312, and to drive air in the inner case 312 to blow out through the first air outlet 3111 and at least one set of the first inner air outlet 3121, the second outer air outlet 3112 and the second inner air outlet 3122.

As shown in fig. 7 and 8, the end cap 330 is disposed at one end of the housing 310 in the axial direction, and is fixedly connected or integrally formed with the housing 310, and the fixed connection may be screw connection, clamping connection, riveting connection, bonding connection, welding connection, etc.

Or one skilled in the art may omit the end cap 330 as desired.

As shown in fig. 8 and 9, the damper assembly 340 includes a first damper 341 and a second damper 342.

Wherein the first damper 341 is slidably installed in the cavity 301 in the circumferential direction of the casing 310 and serves to communicate or block the first outer air outlet 3111 with the first inner air outlet 3121.

Wherein the second damper 342 is slidably installed in the cavity 301 in the circumferential direction of the casing 310 and serves to communicate or block the second outer air outlet 3112 with the second inner air outlet 3122.

As can be seen from fig. 8 and 9, the cavity 301 is C-shaped in cross section in the radial direction of the casing 310, and the first damper 341 and the second damper 342 are each arcuate bar-shaped sliders.

Further, in the circumferential direction of the impeller 320, the first air door 341 can cover and block the first outer air outlet 3111 and the first inner air outlet 3121, so as to control the on-off between the first air supply passage 141 and the inside of the cabinet 310 through the first air door 341. The second air door 342 can cover and block the second outer air outlet 3112 and the second inner air outlet 3122 to control the on-off between the second air supply passage 143 and the inside of the cabinet 310 through the second air door 342. The first air door 341 and the second air door 342 can jointly cover and block the air inlet 3124, so that the on-off between the air return channel 142 and the interior of the casing 310 can be jointly controlled through the first air door 341 and the second air door 342.

As shown in fig. 7 to 9, a third air outlet 3113 may be further provided on the outer casing 311, and a third inner air outlet 3123 aligned radially with the third air outlet 3113 may be further provided on the inner casing 312.

Further, either one of the first damper 341 and the second damper 342 can block communication of the third outer air outlet 3113 and the third inner air outlet 3123 alone.

Referring back to fig. 3, the third outlet 3113 communicates with the third air supply duct 144, so that either one of the first air door 341 and the second air door 342 can control the on-off between the third air supply duct 144 and the inside of the cabinet 310.

Alternatively, as shown in fig. 4 to 6, a separate third damper 710 may be provided for the third air supply path 144, so that the opening/closing between the third air supply path 144 and the inside of the cabinet 310 does not need to be controlled by the first damper 341 and/or the second damper 342.

As shown in fig. 10, the blower 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.

As can be seen in fig. 7-9, the outer shell 311 can be understood to be a C-shaped cap that covers the outer peripheral surface of the inner shell 312. In the present utility model, the outer case 311 and the inner case 312 may be integrally formed, or may be fixedly connected (e.g., welded, fused, etc.).

Specifically, one end of the inner housing 312 in the axial direction is provided with a first arc-shaped opening 3125. An end of the first damper 341 in the axial direction is provided with an arc-shaped first rack 3411, and the first rack 3411 penetrates the first arc-shaped opening 3125 to be exposed outside the inner casing 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, the first gear set 352 being engaged with a first rack 3411.

Accordingly, one end of the inner housing 312 in the axial direction is provided with a second arc-shaped opening 3126. An axial end of the second damper 342 is provided with an arc-shaped second rack 3421, and the second rack 3421 penetrates the second arc-shaped opening 3126 to be exposed outside the inner casing 312. The second driving device 360 includes a second motor 361 fixed to the casing 310 and a second gear set 362 drivingly connected to the second motor 361, the second gear set 362 being engaged with the second rack 3421.

As can be seen in fig. 10, the first gear set 352 includes two meshed gears, one of which is fixedly connected to the first motor 351 and the other of which is rotatably connected to the axial end face of the inner housing 312 and is meshed with the first rack 3411. Accordingly, the second gear set 362 includes two meshed gears, one of which is fixedly coupled to the second motor 361 and the other of which is rotatably coupled to the axial end surface of the inner housing 312 and meshed with the second rack 3421.

Further, in the present utility model, the first motor 351 and the second motor 361 are stepping motors or servo motors to determine the positions of the first damper 341 and the second damper 342 by controlling the angles at which the first motor 351 and the second motor 361 rotate.

As shown in fig. 9, in the present utility model, the blower 300 may further include a first position sensor 371, a second position sensor 372, and a pressure sensor 373.

When the first air door 341 and the second air door 342 jointly shield the air inlet 3124 of the fan 300, the first position sensor 371 is triggered by the first air door 341, the second position sensor 372 is triggered by the second air door 342, and the pressure sensor 373 is triggered by the first air door 341 and the second air door 342 in a squeezing mode.

Illustratively, a first position sensor 371, a second position sensor 372, and a pressure sensor 373 are each secured to the inner housing 312. In the moving path of the first and second dampers 341 and 342, neither the first and second position sensors 371 and 372 interfere with the first and second dampers 341 and 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.

Further, the first position sensor 371 and the second position sensor 372 are hall sensors, and corresponding magnets are respectively disposed on the first damper 341 and the second damper 342 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 may be a piezo-resistor or a pressure switch.

Referring back to fig. 8, the end cap 330 is fastened to the outside of the first and second driving devices 350 and 360 and fixedly coupled to the casing 310.

Further, the end cap 330 has a C-shaped structure as a whole, and the inner sidewall of the end cap 330 is provided with a relief hole 331 to relieve the first gear rack 3411 and the second gear rack 3421 or relieve the first gear set 352 and the second gear set 362.

In the embodiment shown in fig. 8, the relief hole 331 of the end cap 330 is used to relief the first and second racks 3411 and 3421.

In addition, the end cap 330 may be configured in any other possible structure, such as a hollow column with one axial end opened and the other axial end closed, and the open end of the end cap 330 is fixedly connected with the casing 310 in a sealed manner, and thus the first rack 3411, the second rack 3421, the first driving device 350 and the second driving device 360 are covered and buckled, thereby avoiding air leakage in the fan 300.

Based on the above description, it will be understood by those skilled in the art that the blower fan 300 having the above-described structure of the present utility model can allow cool air in the refrigerating compartment 140 to enter at least one of the first, second and third storage compartments 131, 132 and 133.

It should be noted that the impeller 320 described above is an impeller of a cross-flow fan.

As shown in fig. 4 to 6, in some embodiments of the present utility model, the refrigerator further includes a water tray 400 disposed in the refrigerating compartment 140, the water tray 400 being disposed under the first and second plate evaporators 210 and 220 to receive water falling from the first and second plate evaporators 210 and 220.

The structure of the drip tray 400 in some embodiments of the present utility model is illustrated with reference to fig. 11.

As shown in fig. 11, the water pan 400 is provided with a first water receiving groove 401 located below the first plate-type evaporator 210, a second water receiving groove 402 located below the second plate-type evaporator 220, and a hollow structure 403 formed between the first water receiving groove 401 and the second water receiving groove 402, wherein the hollow structure 403 is used for allowing air to flow.

With continued reference to fig. 11, the water-receiving tray 400 is further provided with a connection slot 404 for communicating the first water-receiving slot 401 with the second water-receiving slot 402, and the connection slot 404 is located at the rear ends of the first water-receiving tray 400 and the second water-receiving tray 400.

Further, a drain hole 405 is provided in one of the first water pan 400 and the second water pan 400 or in the connection groove 404, and the drain hole 405 is led to the evaporation pan 730 in the refrigerator press bin through a pipeline.

As shown in fig. 11, a drain hole 405 is provided in the connection groove 404. Further, the height of the inner bottom surface of the connection groove 404 may be gradually lowered toward the direction approaching the drain hole 405 so that water flows out of the drain hole 405.

Further, although not shown, the drip tray 400 is configured to be inclined downward from front to back such that water on the drip tray 400 flows toward the rear of the drip tray 400, and specifically into the connecting slot 404.

In addition, the person skilled in the art may arrange the water pan 400 in any other possible structure, for example, omitting the structure of forming the connection groove 404 and forming the connection groove 404 on the rear side wall or the bottom wall of the refrigerating compartment 140, as required.

Referring back to fig. 4 to 6, in some embodiments of the present utility model, the refrigerator may further include an electric heating wire 600, the electric heating wire 600 being attached to at least one side of at least one of the first plate type evaporator 210 and the second plate type evaporator 220.

Further, the electric heating wires 600 are respectively attached to both side surfaces of each of the first plate type evaporator 210 and the second plate type evaporator 220.

Returning to fig. 2 and 3, in some embodiments of the present utility model, the refrigerator further includes a first water guide member 510 provided at least one side of the first plate type evaporator 210, the bottom end of the first water guide member 510 extending into the first water receiving tank 401 in a horizontal direction. The refrigerator further includes a second water guide member 520 provided at least one side of the second plate evaporator 220, the bottom end of the second water guide member 520 extending into the second water receiving tank 402 in a horizontal direction.

Further, the first water guide members 510 are respectively disposed at both sides of the first plate type evaporator 210, and the second water guide members 520 are respectively disposed at both sides of the first plate type evaporator 210.

As can be seen from fig. 2 and 3, the first water guide member 510 is inclined downward in the left-right direction in a direction approaching the first water receiving tank 401, and the second water guide member 520 is inclined downward in the left-right direction in a direction approaching the second water receiving tank 402.

Further, the first water guiding member 510 at the left side of the first plate evaporator 210 is abutted against the left side wall of the first air supply channel 141, so that the first water guiding member 510 forms the bottom wall of the first air supply channel 141. Optionally, the first water guiding member 510 abuts against or has a gap with the water receiving tray 400, and the gap between each of the first water guiding member 510 and the water receiving tray 400 and the first plate evaporator 210 is small (e.g. 1mm, 3mm, 5mm, etc.), so that most of the cold air in the return air channel 142 enters the first air supply channel 141 via the fan 300 while ensuring the flow of the condensed water. Alternatively, the person skilled in the art may also make the first plate evaporator 210 and the first water guide member 510 abut against the water tray 400, respectively, as needed, so that the bottom of the first air supply duct 141 is isolated from the return air duct 142.

Accordingly, the second water guide member 520 at the left side of the second plate evaporator 220 is abutted against the left side wall of the second air supply duct 143 such that the second water guide member 520 constitutes the bottom wall of the second air supply duct 143. Optionally, the second water guiding member 520 abuts against or has a gap with the water receiving tray 400, and the gap between each of the second water guiding member 520 and the water receiving tray 400 and the second plate evaporator 220 is small (e.g., 1mm, 3mm, 5mm, etc.), so that most of the cool air in the return air channel 142 enters the second air supply channel 143 via the fan 300 while ensuring the flow of the condensate water. Alternatively, the person skilled in the art may also make the second plate evaporator 220 and the second water guiding member 520 abut against the water receiving tray 400, respectively, as needed, so that the bottom of the second air supply duct 143 is isolated from the return air duct 142.

In the present utility model, the first water guiding member 510 and/or the second water guiding member 520 may have a straight plate structure, a curved plate structure, or any other possible structure.

The electric heating wire 600 in the present utility model is exemplified with reference to fig. 12.

As shown in fig. 4 to 6 and 12, the electric heating wire 600 may be provided in a serpentine shape. Further, the electric heating wire 600 includes at least one straight line segment 610, and an angle between the straight line segment 610 and a horizontal plane is preferably greater than 0 degrees (for example, may be 3 °,5 °, 15 °, etc.), so that condensed water or frosted water flows down along the straight line segment 610. Alternatively, one skilled in the art may also make the angle between the straight line segment 610 and the horizontal plane 0 degrees, i.e., make the straight line segment 610 parallel to the horizontal plane, as desired.

As shown in fig. 12, the electric heating wire 600 includes a first section 601, a second section 602, and a third section 603 from top to bottom, and distances between adjacent two straight sections 610 distributed in the first section 601, the second section 602, and the third section 603 decrease in sequence.

Further, the electric heating wire 600 may be a thin film heating wire in the present utility model. And, the electric heating wire 600 is adhered to the first plate type evaporator 210 or the second plate type evaporator 220 by an aluminum foil tape (not shown in the drawing). Specifically, both sides of the aluminum foil tape have adhesiveness, one side of the aluminum foil tape is adhered to the first plate type evaporator 210 or the second plate type evaporator 220, and the other side of the aluminum foil tape is adhered to the electric heating wire 600. Or one side of the aluminum foil tape has adhesion, and the one side of the aluminum foil tape having adhesion is simultaneously adhered to the electric heating wire 600 and the first plate type evaporator 210 or the second plate type evaporator 220.

Alternatively, the person skilled in the art may set the electric heating wire 600 as a tube type heating wire, set a clamping groove or a buckle on the first plate type evaporator 210 or the second plate type evaporator 220, and clamp the electric heating wire 600 in the clamping groove or the buckle as required.

In the present utility model, the electric heating wire 600 is used to heat the first plate type evaporator 210 or the second plate type evaporator 220 to make the first plate type evaporator 210 or the second plate type evaporator 220 quickly defrost when the first plate type evaporator 210 or the second plate type evaporator 220 defrost.

A refrigerating system 800 of the refrigerator of the present utility model will be illustrated with reference to fig. 13 and 14.

As shown in fig. 13, in one refrigeration system 800 of the present utility model, a compressor 810, a condenser 820, a first throttling member 831, a first plate type evaporator 210, a second plate type evaporator 220, and a control valve block 840 are included.

Wherein, the first throttling member 831 is an electronic expansion valve. Or the first throttling member 831 may be provided as a capillary tube as necessary by those skilled in the art.

Wherein the refrigeration system 800 is configured to implement series and parallel connection between the first plate evaporator 210 or the second plate evaporator 220 through the control valve block 840.

Further, the control valve block 840 includes a first control valve 841 and a second control valve 842, each of the first control valve 841 and the second control valve 842 having an inlet and a plurality of outlets.

As shown in fig. 13, 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 sequentially connected end to form a fluid circuit. The first control valve 841 is also fluidly connected by one of its outlets to the inlet of the second plate evaporator 220. The second control valve 842 is also fluidly connected by one of its outlets to the inlet of the compressor 810

Further, the refrigeration system 800 also includes a second throttle member 832. The outlet of the second throttle member 832 is fluidly connected to the second plate evaporator 220, and the inlet of the second throttle member 832 is fluidly connected to the first control valve 841 such that the second plate evaporator 220 is fluidly connected to the first control valve 841 via the second throttle member 832.

Wherein the second throttle member 832 is an electronic expansion valve. Or the second throttle member 832 may be provided as a capillary tube as required by a person skilled in the art.

Further, the refrigeration system 800 further includes a multi-pass control valve 850, 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-pass control valve 850 via pipelines, and the outlet of the multi-pass control valve 850 is connected to the inlet of the compressor 810 via a pipeline.

Further, the first control valve 841 is also fluidly connected to the inlet of the compressor 810 via one of its outlets.

In the present utility model, the first control valve 841, the second control valve 842, and the multi-way control valve 850 are all electronically controlled valves.

One refrigeration system 800 shown in fig. 13 may operate in at least the following refrigeration modes:

Only the first plate evaporator 210 is cooled, and the refrigerant circulates along the following path (referred to as a first path): compressor 810→condenser 820→first control valve 841→first restriction member 831→first plate evaporator 210→second control valve 842→multi-pass control valve 850→compressor 810.

Only the second plate evaporator 220 is cooled, and the refrigerant circulates along the following path (referred to as a second path): compressor 810, condenser 820, first control valve 841, second throttle member 832, second plate evaporator 220, multi-pass control valve 850, compressor 810.

The first plate evaporator 210 and the second plate evaporator 220 simultaneously cool, and the refrigerant circulates along the following path (denoted as a third path): compressor 810→condenser 820→first control valve 841→first restriction member 831→first plate evaporator 210→second control valve 842→second plate evaporator 220→multi-pass control valve 850→compressor 810. In addition, the refrigerant may circulate along the first path and the second path at the same time.

As shown in fig. 14, in another refrigeration system 800 of the present utility model, the refrigeration system 800 may also include a gas-liquid separator 860. The gas-liquid separator 860 is fluidly connected with the first control valve 841, the second control valve 842, and the second throttle member 832, respectively, such that the first control valve 841 and the second control valve 842 are fluidly connected with the second throttle member 832 via the gas-liquid separator 860, respectively.

Further, the gas-liquid separator 860 is also connected to an inlet of the multi-way control valve 850 through a pipe, so that the gaseous refrigerant separated by the gas-liquid separator 860 directly flows back to the return port of the compressor 810.

Compared to the refrigeration system 800 shown in fig. 13, the refrigeration system 800 shown in fig. 14 may also operate in the following refrigeration modes:

The second plate evaporator 220 performs strong refrigeration, and the refrigerant circulates along the fourth path: compressor 810→condenser 820→first control valve 841→first restriction member 831→first plate evaporator 210→second control valve 842→gas-liquid separator 860→second restriction member 832→second plate evaporator 220→multi-pass control valve 850→compressor 810. Meanwhile, the refrigerant also circulates along the fifth path: compressor 810, condenser 820, first control valve 841, gas-liquid separator 860, second throttle member 832, second plate evaporator 220, multi-pass control valve 850, compressor 810. And, the gaseous refrigerant in the gas-liquid separator 860 also flows along the branch six: gas-liquid separator 860→multi-pass control valve 850. The refrigerating mode of the refrigerator in some embodiments of the present utility model will be described in detail with reference to fig. 15 to 21.

As shown in fig. 15, when the refrigerator is just turned on or the first and second plate evaporators 210 and 220 defrost, the first and second dampers 341 and 342 are in the first posture such that the first and second dampers 341 and 342 jointly shield the return air passage 142, preventing heat in the return air passage 142 from entering the first, second and third storage compartments 131, 132 and 133. Meanwhile, the first position sensor 371 is triggered by the first air door 341, the second position sensor 372 is triggered by the second air door 342, and the pressure sensor 373 is triggered by the first air door 341 and the second air door 342 in a squeezing mode, so that the positions of the first air door 341 and the second air door 342 of the refrigerator are calibrated.

As shown in fig. 16, when only the third storage compartment 133 needs to be cooled, the first and second dampers 341 and 342 are in the second posture such that the first damper 341 shields the first outlet 3111, the second damper 342 shields the second outlet 3112, the third outlet 3113 is opened, and cool air flows from the inside of the cabinet 310 to the third air supply duct 144. The refrigeration system 800 may operate in any of the first, second, and third paths described previously.

As shown in fig. 17, when it is desired to cool the second and third storage compartments 132 and 133, the cooling system 800 may be operated according to any one of the first, second and third paths described previously, preferably according to the second path. The first damper 341 shields the first outlet 3111, and the second damper 342 shields a part of the third outlet 3113, so that cool air flows from the inside of the housing 310 to the second air supply duct 143 and the third air supply duct 144, respectively. The refrigeration system 800 may operate according to any of the first, second and third paths described previously, preferably according to the second path.

As shown in fig. 18, when the first and third storage compartments 131 and 133 require cooling, the first and second dampers 341 and 342 are in the fourth posture such that the first damper 341 shields a portion of the third outlet port 3113 and the second damper 342 shields the second outlet port 3112, and cool air flows from the inside of the cabinet 310 to the first and third air supply passages 141 and 144, respectively. The refrigeration system 800 may operate according to any of the first, second and third paths described previously, preferably according to the first path.

As shown in fig. 19, when the first and second storage compartments 131 and 132 require cooling, the first and second dampers 341 and 342 are changed to the fifth posture such that the first and second dampers 341 and 342 abut against and jointly shield the third air outlet 3113, and cool air flows from the inside of the cabinet 310 to the first and second air supply passages 141 and 143, respectively. The refrigeration system 800 may operate according to the third path described above, or according to both the first path and the second path.

As shown in fig. 20, when only the second storage compartment 132 needs to be cooled, the first and second dampers 341 and 342 are changed to the sixth posture such that the first damper 341 shields the first outlet 3111 and the second damper 342 shields the third outlet 3113, and cool air flows from the inside of the cabinet 310 to the second air supply duct 143. The refrigeration system 800 operates according to the second path described above.

When strong 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 depressurized by the first throttling member 831 is mixed with the refrigerant flowing out of the first control valve 841 at the gas-liquid separator 860, and the refrigerant is supercooled before entering the second throttling member 832, thereby enabling the second plate evaporator 220 to obtain a lower-temperature refrigerant, resulting in a lower-temperature condition.

As shown in fig. 21, when only the first storage compartment 131 needs to be cooled, the first and second dampers 341 and 342 are changed to the seventh posture such that the first damper 341 shields the third outlet 3113 and the second damper 342 shields the first outlet 3111, and cool air flows from the inside of the cabinet 310 to the first air supply duct 141. The refrigeration system 800 operates according to the first path described above.

In the present utility model, the types of the first, second and third storage compartments 131, 132 and 133 may be set as required, in addition to the above description. For example, the first storage compartment 131 may be provided as a temperature change compartment, the second storage compartment 132 may be provided as a low temperature compartment (temperature lower than the freezing compartment), and the third storage compartment may be provided as the freezing compartment.

As shown in fig. 22, in some embodiments of the present utility model, the refrigerator further 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 in control connection with the controller 900.

Further, in some embodiments of the present utility model, the controller 900 is configured to control the first and second dampers 341 and 342 to be shifted to the first posture (as shown in fig. 15) to calibrate the first and second dampers 341 and 342 when the refrigerator satisfies a preset condition.

The preset condition may be that the refrigerator is started or the first plate evaporator 210 and the second plate evaporator 220 are frosted, and the preset condition may also be that the refrigerator receives a calibration instruction sent by a user.

Further, the controller 900 may be further configured to control the first and second dampers 341 and 342 to be shifted to the second posture (as shown in fig. 16) such that the first damper 341 shields the first outlet 3111 and the second damper 342 shields the second outlet 3112 when the third storage compartment 133 needs to be cooled.

Further, the controller 900 may be further configured to control the first damper 341 and the second damper 342 to be shifted to the third posture (as shown in fig. 17) such that the first damper 341 covers the first outlet 3111 and the second damper 342 covers a portion of the third outlet 3113 when the second and third storage compartments 132 and 133 need cooling.

Further, the controller 900 may be further configured to control the first and second dampers 341 and 342 to be shifted to the fourth posture (as shown in fig. 18) such that the first damper 341 shields a portion of the third outlet 3113 and the second damper 342 shields the second outlet 3112 when the first and third compartments 131 and 133 require cooling.

Further, the controller 900 may be further configured to control the first and second dampers 341 and 342 to be shifted to the fifth posture (as shown in fig. 19) such that the first and second dampers 341 and 342 abut against and jointly shield the third outlet 3113 when the first and third storage compartments 131 and 133 need to be cooled.

Further, the controller 900 may be further configured to control the first and second dampers 341 and 342 to be shifted to the sixth posture (as shown in fig. 20) such that the first damper 341 covers the first outlet 3111 and the second damper 342 covers the third outlet 3113 when the first and third storage compartments 131 and 133 need to be cooled.

Further, the controller 900 may be further configured to control the first and second dampers 341 and 342 to be shifted to a seventh posture (as shown in fig. 21) such that the first damper 341 covers the third outlet 3113 and the second damper 342 covers the first outlet 3111 when the first and third storage compartments 131 and 133 need to be cooled.

It should be noted that, in the foregoing description, refrigeration is required for a certain storage compartment, specifically, the temperature in the corresponding storage compartment is higher than the preset temperature value. For example, the first storage compartment 131 is a refrigerating compartment, and when the temperature in the first storage compartment 131 is higher than-16 ℃ (any other possible temperature, for example), the first storage compartment 131 needs to be refrigerated, and when the temperature in the first storage compartment is reduced to-18 ℃ (any other possible temperature, for example), the first storage compartment 131 stops the refrigeration. The second storage compartment 132 is a temperature-changing compartment, and when the temperature in the second storage compartment 132 is higher than 0 ℃ (any other possible temperature, etc.), the second storage compartment 132 needs to be cooled, and when the temperature in the second storage compartment is reduced to-4 ℃ (any other possible temperature, etc.), the second storage compartment 132 stops cooling. The third storage compartment 133 is a temperature change compartment, and when the temperature in the third storage compartment 133 is higher than 5 ℃ (any other possible temperature, etc.), the third storage compartment 133 needs to be cooled, and when the temperature in the third storage compartment is reduced to 1 ℃ (any other possible temperature, etc.), the third storage compartment 133 stops cooling.

Further, in still other embodiments of the present utility model, the third storage compartment 133 is a refrigerator compartment, and the controller 900 may be further configured to: when the refrigerator satisfies the defrosting condition, the first and second dampers 341 and 342 are controlled to be shifted to the second posture shown in fig. 16. When the temperature of at least one of the first plate type evaporator 210 and the second plate type evaporator 220 rises to the preset temperature, the first air door 341 and the second air door 342 are controlled to be changed to the first posture shown in fig. 15, so that the first air door 341 and the second air door 342 jointly shield the air inlet 3124 of the blower 300. And controls the electric heating wire 600 to be electrified to heat the first plate type evaporator 210 and the second plate type evaporator 220 until the electric heating wire 600 works for a preset time period or the temperature of the first plate type evaporator 210 and the second plate type evaporator 220 reaches the maximum defrosting temperature.

The defrosting condition may be that the refrigerator is operated for a preset time (e.g., 7 days, 10 days, 15 days, etc.) from the end of the last defrosting to the current time, and/or the door is opened and closed for a preset number of times (e.g., 20 times, 50 times, 65 times, etc.).

Wherein the preset temperature may be any feasible temperature below the refrigerating temperature of the third storage compartment 133 (refrigerating compartment), for example, -10 ℃, -5 ℃, -4 ℃, -1 ℃ and the like.

The preset time period may be any time period for completing defrosting the first plate evaporator 210 and the second plate evaporator 220, for example, 10min, 20min, 35min, etc.

The maximum defrosting temperature may be any temperature that ensures completion of defrosting of the first plate evaporator 210 and the second plate evaporator 220, for example, 3 ℃, 5 ℃, 10 ℃, 15 ℃, etc.

As will be appreciated by those skilled in the art, when the first and second dampers 341 and 342 are shifted to the second posture shown in fig. 16, air circulates between the third storage compartment 133 (refrigerating compartment) and the return air duct 142. Since the temperature of the air in the third storage compartment 133 (refrigerating compartment) is higher than the temperatures of the first and second plate evaporators 210 and 220, heat in the third storage compartment 133 (refrigerating compartment) may enter the refrigerating compartment 140 and heat the first and second plate evaporators 210 and 220, raising the temperatures of the first and second plate evaporators 210 and 220. Therefore, the utility model reasonably utilizes the cold energy of the first plate type evaporator 210 and the second plate type evaporator 220, and reduces the energy consumption during defrosting of the refrigerator.

In addition, one skilled in the art may set at least one of the first and second storage compartments 131 and 132 as a refrigerating compartment as required, and control the first and second dampers 341 and 342 to be changed to other postures that cause the blower 300 to cool only the refrigerating compartment, to defrost the first and second plate evaporators 210 and 220.

Further, in still other embodiments of the present utility model, the refrigerator may further include a damper structure 740 provided in at least one of the first air supply duct 141, the return air duct 142, and the second air supply duct 143 to define the corresponding air duct as a bent duct by the damper structure 740, thereby extending the length of the corresponding air duct.

Optionally, a damper structure 740 is provided in each of the first air supply path 141, the return air path 142, and the second air supply path 143. The return air duct 142 is described below with reference to fig. 23.

As shown in fig. 23, a damper structure 740 is provided in the return air duct 142, and the damper structure 740 is specifically a plurality of partitions extending back and forth, which are respectively abutted against two inner wall surfaces of the return air duct 142 in the left-right direction, so as to define the return air duct 142 as a bent duct.

As will be appreciated by those skilled in the art, the present utility model defines the corresponding air duct as a bent channel through the damper structure 740, and extends the length of the corresponding air duct, thereby increasing the flow rate of air in the corresponding air duct, so that the amount of air contacted by each portion of the first plate type evaporator 210 and the second plate type evaporator 220 is greater, and thus, the heat exchange efficiency of the air and the corresponding evaporator is improved.

Thus far, the technical solution of the present utility model has been described in connection with the foregoing embodiments, but it will be readily understood by those skilled in the art that the scope of the present utility model is not limited to only these specific embodiments. The technical solutions in the above embodiments can be split and combined by those skilled in the art without departing from the technical principles of the present utility model, and equivalent changes or substitutions can be made to related technical features, so any changes, equivalent substitutions, improvements, etc. made within the technical principles and/or technical concepts of the present utility model will fall within the protection scope of the present utility model.

Finally, the refrigerator according to the present utility model is a refrigerator in a broad sense, and includes not only a refrigerator in a so-called narrow sense, but also a fresh-keeping apparatus having a refrigerating and/or freezing function, such as a refrigerator, a freezer, etc.

In the present utility model, the term "communicating" means fluid communication to allow fluid (e.g., air, liquid) to circulate between two in communication with each other. And the "communication" may be such that fluid does not leak and flows between the two communicating with each other, or such that fluid leaks slightly and flows between the two communicating with each other.

Claims (10)

1. A blower for a refrigerator, comprising:

The shell comprises an outer shell and an inner shell, a cavity is defined between the outer shell and the inner shell, a first air outlet and a second air outlet are arranged on the peripheral wall of the outer shell, and a first inner air outlet aligned with the first air outlet in the radial direction and a second inner air outlet aligned with the second air outlet in the radial direction are arranged on the peripheral wall of the inner shell; an air inlet is further formed in the peripheral wall of the inner shell, and the side wall of the air inlet extends to the outer side of the outer shell in the radial direction;

an impeller rotatably mounted in the inner housing;

a first damper slidably installed in the cavity in a circumferential direction of the casing and adapted to communicate or block the first outlet with the first inner outlet;

and a second damper slidably installed in the cavity in a circumferential direction of the casing and adapted to communicate or block the second outer air outlet with the second inner air outlet.

2. A fan for a refrigerator according to claim 1, wherein,

A third air outlet is also arranged on the outer shell, a third inner air outlet which is aligned with the third air outlet in the radial direction is also arranged on the inner shell,

The fan is configured to enable either one of the first damper and the second damper to individually block communication of the third outlet port with the third inner outlet port.

3. A fan for a refrigerator according to claim 2, wherein,

The fan also comprises a first driving device for driving the first air door to move and a second driving device for driving the second air door to move.

4. A fan for a refrigerator according to claim 3, wherein,

A first arc-shaped opening is formed in one axial end of the inner shell; one end of the first air door in the axial direction is provided with an arc-shaped first rack, and the first rack penetrates through the first arc-shaped opening to be exposed out of the inner shell; the first driving device comprises a first motor fixed on the shell and a first gear set in driving connection with the first motor, and the first gear set is meshed with the first rack;

A second arc-shaped opening is formed in one axial end of the inner shell; one end of the second air door in the axial direction is provided with an arc-shaped second rack, and the second rack penetrates through the second arc-shaped opening to be exposed out of the inner shell; the second driving device comprises a second motor fixed on the shell and a second gear set in driving connection with the second motor, and the second gear set is meshed with the second rack.

5. A fan for a refrigerator according to claim 4, wherein,

The fan also comprises an end cover, and the end cover is buckled on the outer sides of the first driving device and the second driving device and is fixedly connected with the shell.

6. A fan for a refrigerator according to claim 5, wherein,

The end cover is of a C-shaped structure as a whole, and an avoidance hole is formed in the inner side wall of the end cover so as to avoid the first rack and the second rack or avoid the first gear set and the second gear set.

7. A fan for a refrigerator according to any one of claims 1 to 6, wherein,

The cross section of the cavity in the radial direction of the shell is C-shaped.

8. A refrigerator, comprising:

A case defining a first storage compartment, a refrigerating compartment, and a second storage compartment sequentially distributed in a left-right direction;

The first plate type evaporator and the second plate type evaporator are sequentially arranged in the refrigerating compartment along the left-right direction so as to divide the refrigerating compartment into a first air supply channel, a return air channel and a second air supply channel which are sequentially distributed along the left-right direction, wherein the first air supply channel is communicated with the first storage compartment, the second air supply channel is communicated with the second storage compartment, and the return air channel is respectively communicated with the first storage compartment and the second storage compartment;

The blower of any one of claims 2-7 disposed within the refrigeration compartment, the first outlet opening in communication with the first supply air passage, the second outlet opening in communication with the second supply air passage, the inlet opening in communication with the return air passage.

9. The refrigerator according to claim 8, wherein,

The two opposite sides of the side wall of the air inlet extending to the outer side of the shell are respectively abutted with the first plate type evaporator and the second plate type evaporator.

10. The refrigerator according to claim 8, wherein,

The box body is also limited with a third storage compartment positioned above the first storage compartment, the refrigerating compartment and the second storage compartment, a third air supply channel communicated with the third storage compartment and a connecting air channel communicated with the third storage compartment and the return air channel;

And a third air outlet of the fan is communicated with the third air supply channel.