CN108518909B

CN108518909B - Refrigerator with a door

Info

Publication number: CN108518909B
Application number: CN201711079616.2A
Authority: CN
Inventors: 王铭; 费斌; 程学丽; 王晶; 陶海波
Original assignee: Qingdao Haier Co Ltd
Current assignee: Dalian Haier Refrigerator Co ltd; Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2015-05-21
Filing date: 2015-05-21
Publication date: 2020-09-29
Anticipated expiration: 2035-05-21
Also published as: CN104896828B; CN108518909A; CN104896828A

Abstract

The present invention provides a refrigerator, including: a storage chamber divided into a temperature-variable chamber and at least one other storage chamber; an evaporator that cools air supplied to the storage chamber; an evaporator chamber in which an evaporator is disposed and in which an air supply opening leading to the storage chamber is formed; a first blower provided at the blower port and configured to send the air cooled by the evaporator into the storage chamber; and a second blower provided in a variable temperature supply air duct connecting the air outlet and the temperature-variable chamber, for feeding the air blown by the first blower into the temperature-variable chamber. The refrigerator can utilize the two air blowers to blow cold air to the temperature-changing chamber at the same time, so that the circulation of the cold air in the temperature-changing chamber can be accelerated, and the rapid cooling of the temperature-changing chamber can be realized.

Description

Refrigerator with a door

The application is a divisional application with the application date of 2015, 05 and 21 and the invention name of the Chinese application number of 201510263642.5, namely the refrigerator.

Technical Field

The invention relates to refrigeration equipment, in particular to a refrigerator with a temperature changing chamber.

Background

A refrigerator, as a container capable of keeping food or other articles in a cold state at a constant low temperature, has become one of the indispensable home appliances of modern households. In general, a storage compartment of a refrigerator is divided into a plurality of storage compartments having different temperatures, such as a refrigerating compartment, a freezing compartment, and a temperature-changing compartment, to store items to be preserved at different temperatures, respectively. Generally, the ice crystal region of food is between-1 ℃ and-5 ℃, the food in the ice crystal region is changed into block and granular, and the freezing chamber and the temperature change chamber of the traditional refrigerator have low cooling speed, so that the food placed in the freezing chamber and the temperature change chamber are easy to form block and granular crystals in the progressive freezing process, thereby destroying the nutrition of the food and increasing certain energy consumption.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a refrigerator capable of rapidly cooling.

In order to achieve the above object, the present invention provides a refrigerator including:

a storage chamber divided into a temperature-variable chamber and at least one other storage chamber;

an evaporator that cools air supplied to the storage chamber;

an evaporator chamber in which the evaporator is disposed and in which an air supply opening leading to the storage chamber is formed;

a first blower provided at the blower port and configured to send the air cooled by the evaporator into the storage compartment; and

and a second blower provided in a variable temperature supply air duct connecting the air outlet and the variable temperature chamber, for sending the air blown by the first blower into the variable temperature chamber.

Optionally, the refrigerator further comprises:

and a variable temperature damper provided upstream of the second blower in the variable temperature supply air passage.

Optionally, a quick cooling plate is arranged in the temperature changing chamber.

Optionally, the temperature-changing chamber comprises a female seat chamber and a drawer arranged in the female seat chamber in a push-pull manner, an air inlet notch penetrating through the rear wall is formed in the lower portion of the rear wall of the drawer, and the quick cooling plate is arranged in the drawer and located above the air inlet notch;

the variable-temperature supply air path is arranged at the rear side of the variable-temperature chamber, and the female seat chamber and the variable-temperature supply air path are separated by a separator; two air outlets protruding towards the temperature changing chamber are arranged on the separating body, one air outlet is configured to supply air from the top opening of the drawer to the drawer through the top of the rear wall, and the other air outlet is configured to supply air to the lower portion of the drawer through the air inlet notch.

Optionally, two groups of air outlets at different heights are arranged on the side wall of the drawer, and each group of air outlets includes a plurality of air outlets arranged along the depth direction;

the quick cooling plate is further arranged between the two groups of air outlets so as to divide the drawer into an upper space and a lower space which are respectively provided with an independent air path.

Optionally, the refrigerator further comprises:

and a blower cover movably provided on an air outlet side of the first blower, the blower cover being provided with an opening through which cooling air flows when the air outlet is closed, so that the evaporator chamber is communicated with a variable temperature supply air passage connected to the variable temperature chamber even in a state where the blower cover closes the air outlet.

Optionally, the at least one other receiving chamber includes a freezing chamber formed below the temperature-changing chamber, the freezing chamber being communicated with the evaporator chamber through a freezing supply air passage connected thereto; and is

The evaporator chamber is formed behind the freezing chamber;

the blower cover is configured to close the air supply opening and to cut off a flow path between the evaporator chamber and the freezing supply air passage.

Optionally, the at least one other receiving chamber further includes a refrigerating chamber formed above the temperature-changing chamber, the refrigerating chamber being communicated with the evaporator chamber through a refrigerating supply air passage connected thereto; and is

The blower cover is configured to cause the evaporator chamber to simultaneously communicate with the refrigerating supply air path and the variable temperature supply air path through the opening portion in a state where the blower opening is closed.

Optionally, the refrigerator further comprises:

and a refrigerating damper provided in the refrigerating supply air passage.

Optionally, the refrigerating air supply path includes a refrigerating air inlet channel communicated with the air supply outlet and a plurality of refrigerating air outlet channels communicated with the refrigerating chamber, and the refrigerating air outlet channels are configured to be communicated with the refrigerating chamber at different positions of the rear wall of the refrigerating chamber respectively;

the refrigerator further comprises a branch air supply device arranged in the refrigerating supply air path and comprising a branch inlet communicated with the refrigerating air inlet channel and a plurality of distribution ports respectively communicated with the refrigerating air outlet channels, wherein the branch air supply device is configured to controllably distribute the airflow from the branch inlet to the corresponding refrigerating air outlet channel through one or more of the distribution ports.

Optionally, the branched air supply device further includes:

a housing having the inlet and the plurality of dispensing ports formed therein; and

the adjusting piece is provided with at least one shielding part which is movably arranged in the shell and is configured to controllably shield the distribution openings so as to adjust the air outlet areas of the distribution openings.

The refrigerator can utilize the two air blowers to blow cold air to the temperature-changing chamber at the same time, so that the circulation of the cold air in the temperature-changing chamber can be accelerated, and the rapid cooling of the temperature-changing chamber can be realized. The invention is beneficial to the food in the temperature-variable chamber to rapidly pass through the ice crystal area, and large ice crystals are prevented from being generated among food cells; the water segregation in the cells is reduced, so that the juice loss is less during the unfreezing; the time for the concentrated solute in the cell tissue to contact with the food tissue, the colloid and various components is obviously shortened, and the harmfulness of concentration is reduced to the minimum degree; rapidly lowering the food product to a temperature below the temperature of the microbial growth event, advantageously counteracting the growth of microorganisms and their biochemical reactions; the quick-freezing time of the food is short, and the utilization rate and the continuity of the refrigerator are improved.

Further, the refrigerator according to the present invention is provided with a movable blower cover having an opening portion allowing air cooled by the evaporator to flow therethrough and capable of closing the evaporator chamber air supply opening, outside the evaporator chamber air supply opening. Thus, the cold air can be independently supplied to the temperature-variable chamber in a state where the supply of the cold air to a part of the partitioned storage chambers is stopped. Thus, the storage chambers can be appropriately cooled by one evaporator according to the cooling load of each storage chamber.

Furthermore, the cold energy can be distributed to one or two required storage chambers in a centralized way by controlling the movable air blower cover and each air door in the air duct, and meanwhile, the cold energy can be distributed to different areas of the refrigerating chamber by arranging the branch air supply device in the refrigerating supply air duct, so that the cold air can be reasonably distributed according to the cold energy requirements of different storage chambers or the cold energy requirements of different areas in the refrigerating chamber, and the preservation performance and the operating efficiency of the refrigerator are enhanced.

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

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic side sectional view of a refrigerator according to an embodiment of the present invention;

FIG. 2 is a schematic exploded view of the variable temperature chamber and the variable temperature supply air path shown in FIG. 1;

FIG. 3 is a schematic side cross-sectional view of the variable temperature chamber and the variable temperature supply air path shown in FIG. 2;

FIG. 4 is a schematic top view of the variable temperature chamber shown in FIG. 2;

fig. 5 is a schematic view of the first blower and blower cover structure shown in fig. 1, with the blower cover in a closed state in fig. 5a and in an open state in fig. 5 b;

fig. 6 is a schematic configuration view of a supply air path of a refrigerator according to an embodiment of the present invention;

fig. 7 is a schematic exploded view of the branched blowing device shown in fig. 6.

Detailed Description

Fig. 1 is a schematic side sectional view of a refrigerator according to an embodiment of the present invention (arrows in the drawing indicate airflow directions). As shown in fig. 1, the refrigerator 100 according to the present embodiment includes an insulation box 20 as a main body, which may include a case made of a steel plate having an open front side, an inner container made of a synthetic resin provided in an inner space of the case and having an open front side, and an insulation material made of a foamed polyurethane formed by filling a gap between the case and the inner container with foam. The heat-insulating box 20 has a storage chamber for storing food and the like formed therein. The interior of the storage compartment is divided into a temperature-variable compartment 22 and at least one other storage compartment depending on the storage temperature and the use. The other receiving chambers may be a refrigerating chamber 21 and/or a freezing chamber 23, etc.

In a preferred embodiment, the interior of the storage compartment is divided into a temperature-varying chamber 22, a refrigerating chamber 21 and a freezing chamber 23, wherein the uppermost layer of the storage compartment is the refrigerating chamber 21, the lower layer of the refrigerating chamber 21 is the temperature-varying chamber 22, and the lower layer of the temperature-varying chamber 22 is the freezing chamber 23.

As will be appreciated by those skilled in the art, the refrigerator 100 according to the embodiment of the present invention may further include an evaporator 24, a compressor (not shown), a condenser (not shown), and a throttling element (an expansion valve or a capillary tube) (not shown), as in the conventional refrigerator, wherein the evaporator 24 is connected to the compressor, the condenser, and the throttling element via refrigerant pipes to form a refrigeration cycle, and is cooled when the compressor is started to cool the air supplied to the storage compartment.

The evaporator 24 may be disposed in the evaporator chamber 240. The evaporator chamber 240 is formed with a supply port 241 as an opening connected to the storage chamber, and air cooled by the evaporator 24 is sent to the storage chamber through the supply port 241. The refrigerator 100 further includes a supply air passage for conveying cool air to the storage compartment. Specifically, the supply air path includes variable temperature supply air path 210 connected to variable temperature chamber 22 for supplying air to variable temperature chamber 22, freezing supply air path 230 connected to freezing chamber 23 for supplying air to freezing chamber 23, and refrigerating supply air path 210 connected to refrigerating chamber 21 for supplying air to refrigerating chamber 21. The air supply opening 241 is an opening through which the cold air cooled by the evaporator 24 flows, and communicates with the evaporator chamber 240, the variable temperature supply air passage 210, the freezing supply air passage 230, and the refrigerating supply air passage 210.

Refrigerating supply air passage 210 is formed on the rear surface of refrigerating room 21 and partitioned by synthetic resin partition 219. The refrigerating supply air passage 210 is formed with a refrigerating outlet 211 for allowing cold air to flow into the refrigerating compartment 21. Further, a refrigerating damper 212 is provided in the refrigerating supply air duct 210. The refrigerating damper 212 may be an openable and closable damper driven by a motor or the like, and controls the flow rate of cold air supplied to the refrigerating compartment 21 so as to maintain the interior of the refrigerating compartment 21 at an appropriate temperature.

Variable temperature supply air duct 210 is formed on the rear side of variable temperature chamber 22, is partitioned by partition 221 made of synthetic resin, and supplies the cold air cooled by evaporator 24 to variable temperature chamber 22. The variable temperature supply air passage 210 is provided with a variable temperature damper 222. The variable temperature damper 222 may be an openable and closable damper driven by a motor or the like, and controls the flow rate of the cold air supplied to the variable temperature chamber 22.

Freezing supply air duct 230 is formed on the rear side of freezing chamber 23 and partitioned by partition 232 made of synthetic resin, and partition 232 has blow-out port 234 formed therein for blowing out cool air cooled by evaporator 24 into freezing chamber 23. The evaporator chamber 240 may be disposed at the rear of the freezing chamber 23, particularly, at the rear side of the freezing supply air passage 230. Evaporator chamber 240 is partitioned from freezing supply air duct 230 or freezing chamber 23 by a synthetic resin partition 242. Evaporator chamber 240 can be a space formed by the sandwiching of the inner bladder and separator 242. The blowing port 241 may be formed at an upper portion of the partition body 242. The lower back of the freezing chamber 23 is formed with a return air opening (not shown in the drawings) for returning air from the freezing chamber 23 to the evaporator chamber 240.

The first blower 50 is provided at the blower port 241 and is configured to send the air cooled by the evaporator 24 into the storage compartment. In particular, the refrigerator 100 according to the embodiment of the present invention further includes a second blower 70 disposed in the variable temperature supply air path 210 for feeding the air blown from the first blower 50 into the variable temperature compartment 22. The variable temperature damper 222 may be further provided upstream of the second blower 70 in the variable temperature supply air passage 210. The present invention can blow cool air to the variable temperature chamber 22 by using two air blowers at the same time, so that the circulation of the cool air in the variable temperature chamber 22 can be accelerated, and the rapid cooling of the variable temperature chamber 22 can be realized.

In particular, a quick-cool plate 40 may be disposed within the temperature change chamber 22 to provide a faster cooling rate for items placed on the quick-cool plate 40. The quick cooling plate 40 may be a plate structure made of a heat conductive material, such as an aluminum plate.

Referring to fig. 2-4 in conjunction with fig. 1, the temperature change chamber 22 may include a female compartment 32 and a drawer 30 that is slidably disposed in the female compartment 32. The quick-cooling plate 40 is disposed in the drawer 30. The female compartment 32 and the variable temperature supply air passage 210 are partitioned by a partition 221. The partition 221 is provided with air outlets projecting toward the temperature-varying chamber 22, and the cold air from the temperature-varying supply air passage 210 is blown to each air outlet by the second blower 70, and blown toward the temperature-varying chamber 22 through the air outlet. A return air inlet 2213 for returning the cool air in the temperature changing chamber 22 to the evaporator chamber 240 is further provided in the partition 221, and a return air blade may be provided in the return air inlet 2213.

In the preferred embodiment, the lower portion of the rear wall 32 of the drawer 30 is provided with an air inlet notch 321 penetrating through the rear wall 32, and the instant cooling plate 40 is disposed in the drawer 30 above the air inlet notch 321. Preferably, the partition 221 is provided with two

air outlets

2211, 2212 protruding toward the temperature changing chamber 22, wherein the air outlet 2211 is configured to blow air from the top opening of the drawer 30 into the drawer 30 through the top of the rear wall 32, and the air outlet 2212 is configured to blow air to the lower portion of the drawer 30 through the air inlet notch 321. Therefore, cold air can flow through the upper side and the lower side of the quick cooling plate 40, so that the cold storage of the quick cooling plate 40 can be accelerated, and the cooling speed of articles on the quick cooling plate 40 is further increased.

Furthermore, two sets of

air outlets

311, 312 at different heights are disposed on the side wall 31 of the drawer 30, and each set of

air outlets

311, 312 includes a plurality of air outlets arranged along the depth direction (or the front-back direction of the drawer 30), so that the cold air flowing into the drawer 30 exchanges heat in the drawer 30 and flows out of the drawer 30 through the air outlets. The instant cooling plate 40 may be further disposed between the two sets of

air outlets

311, 312 to divide the drawer 30 into two upper and lower spaces having independent air paths. Specifically, the horizontal plane of the bottom edge of the upper set of air outlets 311 is higher than the horizontal plane of the top edge of the air inlet notch 321, and the horizontal plane of the top edge of the lower set of air outlets 312 is close to the horizontal plane of the top edge of the air inlet notch 321.

As shown in fig. 3, the quick cooling plate 40 divides the drawer 30 into two spaces, an upper space and a lower space, and the two spaces have respective air inlets and respective air returns, so that relatively independent air paths are formed in the respective spaces. Fig. 4 schematically shows an air path of one space of the drawer 30, as indicated by an arrow in fig. 4. For the upper space of the drawer 30, cool air flows into the upper space from the air outlet 2211 and flows out of the upper space through the set of air outlets 311; for the lower space of the drawer 30, cool air flows into the lower space from the air outlet 2212 and flows out of the lower space through the set of air outlets 312. The air flowing out of the upper or lower space is returned to the evaporator compartment 240 through the return air opening 2213 and a return air passage (not shown).

In some embodiments, the temperature changing chamber 22 may include more than two drawers 30, and one or more air outlets may be provided at corresponding locations on the rear wall 32 of each drawer 30.

Referring to fig. 5, the first blower 50 may include a rotary propeller fan 54 and a fan housing 56, wherein the fan housing 56 is formed with an air tunnel 55 opened in a substantially cylindrical shape. The fan case 56 is attached to the air outlet 241 of the evaporator chamber 240, and serves as a boundary between the suction side and the air outlet side of the first air blower 50. The fan 54 is disposed coaxially with the wind tunnel 55, and the air outlet side end of the fan 54 is located further to the outside than the air outlet side end of the wind tunnel 55, that is, than the air outlet side end of the fan housing 56, that is, closer to the air outlet side or farther from the evaporator chamber 240. This reduces the flow resistance of the air discharged in the radial direction of rotation of the fan 54, and allows the air to be discharged with a small flow loss.

In a further embodiment, the outside of the air blowing opening 241 of the evaporator chamber 240, i.e., the air outlet side of the first air blower 50, is provided with a shielding device 60, and the shielding device 60 includes a blower cover 62 for closing the air blowing opening 241. The blower cover 62 is movably provided on the air outlet side of the first blower 50, and is provided with an opening 622 through which cooling air flows when the air outlet 241 is closed, so that the evaporator chamber 240 communicates with the variable temperature supply air passage 210 even when the blower cover 62 closes the air outlet 241.

With continued reference to fig. 5, the support base 64 of the shielding device 60 is fixed in close contact with the air outlet side end face of the fan case 56 of the first blower 50. The surface of the blower cover 62 facing the evaporator chamber 240, that is, the surface facing the first blower 50, is formed into a concave surface. Further, the peripheral edge of the concave surface forms an abutting portion 67 that abuts against the support base 64. Accordingly, although the fan 54 protrudes toward the air outlet side than the fan case 56, the blower cover 62 may abut against the support base 64 outside the air tunnel 55 without contacting the fan 54, thereby closing the air outlet 241.

The blower cover 62 may be formed in a substantially box-shaped form having a concave portion on the side close to the first blower 50. An opening 622 is formed in the upper side wall of the blower cover 62 by cutting a part of the side wall.

An inlet portion 216 of the variable temperature supply air passage 210 (see fig. 1) is formed above the blower cover 62 by a partition body 217 made of synthetic resin. The inlet 216 is a space formed by sandwiching the back-side partition 242 and the front-side partition 217, and the upper portion thereof communicates with the variable temperature supply air passage 210. The opening 622 communicates with the variable temperature supply air passage 210 even when the blower cover 62 closes the blower port 241. Thus, even when the blower cover 62 is closed, a flow path for the cold air cooled by the evaporator 24 to flow to the temperature changing chamber 22 can be ensured. In the preferred embodiment of the present invention, the upper portion of the inlet portion 216 communicates with both the variable temperature supply air path 210 and the cool supply air path 210. Even when the blower cover 62 is closed, a flow path for the cool air cooled by the evaporator 24 to flow to the temperature changing chamber 22 and the refrigerating chamber 21 can be ensured.

The support base 64 is a substantially flat plate-like member having a cold air flow opening at a substantially central portion. Guide posts 68 are provided on the surface of support base 64 facing freezing chamber 23, and fan guard 62 is supported on guide posts 68 so as to be reciprocatingly movable in the direction of the rotational axis of fan 54. That is, the guide post 68 extending in the direction of the rotation axis of the fan 54 is slidably inserted into the support hole 69 formed in the blower cover 62. Thus, the blower cover 62 can be close to the first blower 50 as shown in fig. 5 a; or may exit first blower 50 as shown in fig. 5 b.

As shown in fig. 5a, if the blower cover 62 approaches the first blower 50, the abutting portion 67 on the peripheral edge of the blower cover 62 abuts against the surface of the support base 64 facing the freezing chamber 23 side, thereby closing the air flow path of the first blower 50. That is, the blower fan cover 62 closes the blower port 241 of the evaporator chamber 240, and closes a part of the air flow path. Specifically, the flow path from the air blowing port 241 to the refrigerating supply air passage 230 is closed by closing the air blower cover 62.

Here, as described above, the blower cover 62 is formed with the opening 622, and the opening 622 communicates with the variable temperature supply air passage 210 and the refrigerating supply air passage 210 even when the blower cover 62 closes the blower port 241. Accordingly, even when the blower cover 62 is closed, the air blown by the first blower 50 flows through the opening 622 into the variable temperature supply air passage 210 and the refrigerated supply air passage 210, as indicated by arrows in fig. 5 a.

In this way, by moving fan cover 62 in a direction approaching evaporator chamber 240 and closing air supply opening 241 by fan cover 62, it is possible to stop the supply of cold air to freezing chamber 23, but it is still possible to supply cold air to temperature changing chamber 22 and refrigerating chamber 21.

Instead of the structure in which blower cover 62 abuts the surface of the support base facing freezer compartment 23, blower cover 62 may abut the outer peripheral surface of the support base or the air-outlet-side end surface or the outer peripheral surface of fan case 56.

On the other hand, as shown in fig. 5b, if the blower cover 62 moves in a direction away from the first blower 50, a gap, i.e., an opening for air flow, is formed between the blower cover 62 and the support base. That is, the blower cover 62 is in the open state. As indicated by arrows, the air blown by the first blower 50 flows out through an opening formed between the contact portion 67 of the blower cover 62 and the support base.

By moving fan cover 62 in the direction away from evaporator chamber 240 in this way, cold air can be supplied to temperature-changing chamber 22, refrigerating chamber 21, and freezing chamber 23.

Further, various methods can be employed for the mechanism and the driving method for opening and closing the blower cover 62. For example, the blower cover 62 can be opened and closed by a motor, a solenoid, or other means. Further, the contact between the blower cover 62 and the fan case may be realized by fixing a member corresponding to the support base of the shielding device 60 to the partition 232.

Fig. 6 is a schematic configuration diagram of a supply air path of the refrigerator 100 according to an embodiment of the present invention. As shown in fig. 6, in a further embodiment of the present invention, the refrigerating supply air path 210 includes a refrigerating inlet duct 218 communicating with the air supply opening 241 and a plurality of refrigerating outlet ducts 215 communicating with the refrigerating chamber 21, and the plurality of refrigerating outlet ducts 215 are disposed to communicate with the refrigerating chamber 21 at different positions of the rear wall of the refrigerating chamber 21. Each of the refrigerating outlet ducts 215 may have one or more refrigerating outlet vents 211.

The refrigerator 100 may further include a branch air supply device 10 disposed in the refrigerating supply air passage 210, and configured to controllably distribute cool air to corresponding regions according to surface temperatures of articles in different regions of the refrigerating compartment 21.

Fig. 7 is a schematic exploded view of the branching blowing device 10 shown in fig. 6. As shown in fig. 7, the branched blowing device 10 includes a branched inlet 128 communicating with the refrigerating inlet duct 218 and a plurality of distribution ports 123 communicating with the plurality of refrigerating outlet ducts 215, respectively. The split air supply device 10 is configured to controllably distribute the airflow from the split inlet 128 to the corresponding refrigerated outlet channel 215 via one or more of the plurality of distribution openings 123.

For example, when the articles are just placed on the top of the refrigerating compartment 21, the temperature sensor arranged on the top of the refrigerating compartment 21 detects that the temperature of the area is high, and the branched air supply device 10 can distribute all cold air to one or more refrigerating air outlet channels 215 of which the refrigerating air outlet 211 is located near the area, so as to quickly cool the high-temperature articles, avoid the influence on other stored articles, and avoid the waste of electric energy caused by cooling the whole refrigerating compartment 21.

Specifically, the split air supply device 10 may include a housing and a regulating member 14. The housing is formed with a manifold inlet 128 and a plurality of dispensing ports 123. The adjusting member 14 has at least one shielding portion 141, and the at least one shielding portion 141 is movably disposed in the housing and configured to controllably shield the plurality of distribution openings 123 so as to adjust the air outlet areas of the plurality of distribution openings 123. The air from the first air blower 50 may be distributed to different regions of the refrigerating compartment 21 by the branching air blowing device 10.

In the embodiment shown in fig. 6 and 7, three distribution ports 123 are formed in the housing, and the branched air-sending device 10 can realize shielding of only one distribution port 123, shielding of two distribution ports 123, or no shielding of any distribution port 123 by rotating the adjusting member 14. In addition, the adjusting element 14 can determine the rotation angle according to the required air volume, so that the shielding portion 141 shields a portion of the corresponding distribution opening 123, and the distribution opening 123 discharges air in a predetermined air discharge area.

In some embodiments of the invention, the housing may be comprised of a body 12 and a cover 16. Specifically, the body 12 includes a circular bottom plate 127 and a plurality of arcuate peripheral walls 121 extending outwardly from different peripheries of the bottom plate 127. The aforementioned distribution opening 123 is formed between the adjacent arc-shaped peripheral walls 121. The cover plate 16 is disposed at an end of the arc-shaped peripheral wall 121 away from the bottom plate 127, and is used for covering the arc-shaped peripheral wall 121. Each shielding portion 141 of the regulating member 14 is an arc-shaped shielding plate disposed coaxially with the arc-shaped peripheral wall 121 so that the shielding portion 14 rotates about the axis of the arc-shaped peripheral wall 121 to controllably shield the dispensing opening 123.

A dc stepper motor 18 may be provided within the housing to rotate the adjustment member 14. Because of the problem that the stepping motor has backlash to rock, in order to weaken the influence of rocking on the adjustment process, an elastic element 146 can be arranged between the adjusting piece 14 and the shell and used for applying pretightening force opposite to the direction to the adjusting piece 14 when the adjusting piece rotates along the direction, and therefore the rocking in the rotation process can be reduced. The elastic member 146 may be a coil spring or a spiral spring, and has one end connected to the rotation center of the adjusting member 14 and the other end connected to the cover plate 16.

Next, the operation of the refrigerator 100 having the above-described structure will be described with reference to fig. 1 to 7 again.

First, the cooling operation of the temperature change chamber 22 will be described. As shown in fig. 1 and 6, the compressor is operated, the variable temperature damper 222 is opened, and the first blower 50 and the second blower 70 are operated, thereby cooling the variable temperature chamber 22. That is, the air cooled by the evaporator 24 passes through the air outlet 241 (first air blower 50) of the evaporator chamber 240, the variable temperature damper 222, the second air blower 70, the refrigerating supply air duct 210, and the outlet nozzle in this order, and is supplied to the variable temperature compartment 22. This enables the food stored in the temperature-varying chamber 22 to be cooled quickly. The circulating cold air supplied into temperature-varying chamber 22 is returned from air return port 2213 into evaporator chamber 240 through the air return passage, and is cooled again by evaporator 24.

Here, the cold air can flow from the evaporator chamber 240 to the variable temperature supply air passage 210 regardless of the state in which the blower cover 62 is closed as shown in fig. 5a or the state in which the blower cover 62 is opened as shown in fig. 5 b. That is, the cool air can be supplied to the temperature changing chamber 22 regardless of whether the blower cover 62 is opened or closed. This enables the cooling operation of temperature-variable chamber 22 to be performed independently of the cooling operation of freezing chamber 23. For example, in a state where the blower cover 62 is closed, the compressor is operated, the variable temperature damper 222 is opened, the refrigeration damper 212 is closed, and the first blower 50 and the second blower 70 are operated, whereby cold air can be supplied only to the variable temperature chamber 22.

Next, the operation of cooling freezing chamber 23 will be described. As shown in fig. 1, the compressor is operated, first blower 50 is operated, and blower cover 62 is opened, whereby freezing room 23 can be cooled. Specifically, as shown in fig. 5b, the blower cover 62 is in a state of being away from the first blower 50. Thus, the air cooled by evaporator 24 is blown out by first blower 50 disposed at air outlet 241 of evaporator chamber 240, and is supplied to freezing chamber 23 through freezing supply air passage 230 and air outlet 234 in this order, so that evaporator 24 cools it again.

Therefore, the food or the like stored in freezing chamber 23 can be cooled at an appropriate temperature. And, the air in the freezing chamber 23 flows back into the evaporator chamber 240 through a return air opening (not shown in the drawing) formed at the lower back bottom of the freezing chamber 23 via a return air opening of the evaporator chamber 240.

Here, the cooling operation of freezing room 23 is performed independently of the cooling of refrigerating room 21 and temperature-changing room 22. As described above, since cold air can be supplied to refrigerating room 21 and temperature-variable room 22 regardless of whether fan cover 62 is opened or closed, the opening and closing of fan cover 62 can be controlled in accordance with the load state of freezing room 23.

For example, by operating the compressor with the refrigeration damper 212 and the variable temperature damper 222 closed, the blower cover 62 is opened, and the first blower 50 is operated, cold air can be supplied only to the freezing chamber 23.

Next, the supply of cold air to the refrigerating compartment 21 will be described. The compressor is operated, the refrigeration damper 212 is opened, and the first blower 50 is operated, thereby cooling the refrigeration compartment 21. That is, the air cooled by the evaporator 24 passes through the air outlet 241 (first air blower 50) of the evaporator chamber 240, the refrigeration damper 212, the refrigeration supply air passage 210, and the refrigeration outlet 211 in this order, and is supplied to the refrigeration compartment 21. This allows food and the like stored in refrigerating compartment 21 to be cooled at an appropriate temperature.

The circulating cold air supplied into refrigerating compartment 21 is returned from the return air inlet (not shown) to evaporator compartment 240 through the return air passage, so that evaporator 24 cools it again.

As described above, in this case, the cold air can flow from the evaporator compartment 240 to the refrigerating supply air passage 210 regardless of whether the blower cover 62 is closed as shown in fig. 5a or the blower cover 62 is opened as shown in fig. 5 b. That is, cold air can be supplied to refrigerating room 21 regardless of whether fan cover 62 is open or closed. This allows cooling operation of refrigerating room 21 to be performed independently of cooling operation of freezing room 23.

For example, in a state where fan cover 62 is closed, the compressor is operated, refrigerating damper 212 is opened, variable temperature damper 222 is closed, and first fan 50 is operated, whereby cold air can be supplied only to refrigerating room 21. During the process of supplying cold air to the refrigerating supply air duct 210, the air volume of each refrigerating outlet 211 can be adjusted by the branching air supply device 10, so as to distribute the cold air to the corresponding regions in a controlled manner according to the surface temperature of the articles in different regions in the refrigerating chamber 21.

As described above, in the refrigerator 100, the cold air cooled by one evaporator 24 can be independently supplied to each storage chamber. Accordingly, temperature-varying chamber 22, refrigerating chamber 21, and freezing chamber 23 can be appropriately cooled according to the cooling loads of temperature-varying chamber 22, refrigerating chamber 21, and freezing chamber 23, respectively.

Further, according to the refrigerator 100 of the present invention, only one evaporator 24 may alternately cool the variable temperature chamber 22, the refrigerating chamber 21 and the freezing chamber 23 as in the refrigerator 100 of the related art including two or three evaporators. Here, refrigerator 100 does not require a complicated refrigerant circuit and circuit switching control, and therefore, can efficiently cool each storage chamber with less heat loss.

Further, refrigerator 100 does not require an evaporator dedicated to refrigerating room 21 and an evaporator dedicated to temperature-changing room 22, and therefore can expand the space between temperature-changing room 22 and refrigerating room 21. Further, the cooling temperature of the evaporator 24 (the evaporation temperature of the refrigerant) can be adjusted in accordance with the target cold insulation temperature of the storage chamber to which cold air is to be supplied, whereby the efficiency of the refrigeration cycle can be further improved.

Further, according to the refrigerator 100 of the present invention, the blower port 241 can be closed by the blower cover 62 of the shielding device 60 and the refrigerating damper 212 and the variable temperature damper 222 can be closed when defrosting the evaporator 24. This prevents the heated air in the evaporator chamber 240 from flowing into the cold-storage supply air passage 210, the variable-temperature supply air passage 210, and the cold-storage supply air passage 230.

In addition, during defrosting, refrigerating damper 212 is opened to supply cold air having high humidity due to defrosting to refrigerating compartment 21 through opening 622 of blower cover 62, thereby increasing the humidity in refrigerating compartment 21, preventing foods and the like stored therein from being dried, and effectively improving the freshness-keeping effect.

In the above-described embodiment, an example is given in which the opening portion 622 formed on the blower cover 62 is connected to both the temperature-changing chamber 22 and the refrigerating chamber 21, but the opening portion 622 may be configured to be connected to only one storage chamber. For example, the opening 622 may be connected only to the temperature-varying chamber 22, only to the refrigerating chamber 21, or the like. In addition, refrigerating room 21 or temperature-changing room 22 shown in the present embodiment may be configured as a storage room in a freezing temperature range. Even in such a modification, according to the present invention, each of the storage chambers having different cooling temperatures can be appropriately cooled by the single evaporator 24.

In addition, although the example is given in which one opening 622 is provided in the blower cover 62, the number of openings 622 is not limited to one, and a plurality of openings 622 may be provided. That is, the blower cover 62 may be formed with a plurality of openings 622 connected to the respective storage chambers. For example, in addition to the above-described opening 622, another opening 622 may be additionally formed in the blower cover 62 so that the two openings 622 communicate with the temperature-changing chamber 22 and the refrigerating chamber 21, respectively.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. A refrigerator, comprising:

a storage chamber partitioned into a temperature-variable chamber and at least one other storage chamber including a freezing chamber formed below the temperature-variable chamber;

an evaporator that cools air supplied to the storage chamber;

an evaporator chamber in which the evaporator is disposed and in which an air supply opening leading to the storage chamber is formed, the freezing chamber being communicated with the evaporator chamber through a freezing supply air passage connected to the freezing chamber, and the evaporator chamber being formed behind the freezing chamber;

a second blower provided in a variable temperature supply air duct connecting the air outlet and the variable temperature chamber, for sending the air blown by the first blower into the variable temperature chamber;

the temperature change chamber is internally provided with a quick cooling plate;

the temperature change chamber comprises a female seat chamber and a drawer arranged in the female seat chamber in a push-pull manner, an air inlet notch penetrating through the rear wall is formed in the lower portion of the rear wall of the drawer, and the quick cooling plate is arranged in the drawer and is positioned above the air inlet notch;

2. The refrigerator of claim 1, further comprising:

3. The refrigerator of claim 1, wherein

Two groups of air outlets at different heights are arranged on the side wall of the drawer, and each group of air outlets comprises a plurality of air outlets arranged along the depth direction;

4. The refrigerator of claim 1, wherein

The at least one other receiving chamber further includes a refrigerating chamber formed above the temperature-variable chamber, the refrigerating chamber being communicated with the evaporator chamber through a refrigerating supply air passage connected thereto.

5. The refrigerator of claim 4, further comprising:

and a refrigerating damper provided in the refrigerating supply air passage.

6. The refrigerator of claim 5, wherein

The refrigerating air supply path comprises a refrigerating air inlet channel communicated with the air supply outlet and a plurality of refrigerating air outlet channels communicated with the refrigerating chamber, and the refrigerating air outlet channels are configured to be communicated with the refrigerating chamber at different positions of the rear wall of the refrigerating chamber respectively;

7. The refrigerator of claim 6, wherein the branched blowing device further comprises: