JP5184469B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator having at least each storage room such as a chilled room, a refrigerated room, and a vegetable room, and more particularly to a technique for controlling the amount of cool air blown into each storage room.

Conventionally, refrigerators are provided with a freezer room, a chilled room, a refrigerator room, a vegetable room, etc. as storage rooms for storing refrigerated items. And the internal temperature of these storage chambers is adjusted by the amount of air blown into each storage chamber by the cool air generated (heat exchange) by a cooler connected to a compressor or a decompression device (capillary tube or the like). . Here, these storage rooms have the lowest set temperature in the freezer compartment, and then the lowest set temperature in the order of the chilled room, the refrigerator room, and the vegetable room.
In general, a refrigerator is configured such that cold air after passing through a refrigerator from a cooler is supplied to the vegetable compartment. Therefore, for example, when the temperature of the refrigerator compartment is high due to frequent opening and closing of the door of the refrigerator compartment, the temperature of the cold air passing through the refrigerator compartment becomes high, and the vegetable compartment cannot be cooled sufficiently. Arise.
Therefore, for example, Patent Document 1 proposes providing a bypass duct that directly supplies a part of the cold air from the cooler toward the refrigerating room to the vegetable room without passing through the refrigerating room. Thereby, it becomes possible to supply cold air with a low temperature to the vegetable compartment.

However, in the configuration disclosed in Patent Document 1, the amount of cool air blown from the cooler to each of the refrigerator compartment and the vegetable compartment is fixed, so that only the refrigerator compartment cannot be intensively cooled. The vegetable room will also be cooled. Therefore, there is a risk that the temperature of the vegetable room will be too low to cool the refrigerator compartment.
Furthermore, in this case, since the cold air from the cooler is always distributed to the refrigerator compartment and the vegetable compartment, the supply of cold air to the vegetable compartment, which is essentially unnecessary, reduces the operating efficiency of the refrigerator and wastes power. It will be.
On the other hand, in patent document 2, the ventilation amount of the cold air from the ventilation path to the refrigerator compartment and the vegetable room can be individually controlled by the opening / closing angle of the damper provided on the ventilation path of the cold air from the cooler. A configuration is proposed. Thereby, for example, it becomes possible to supply the cold air from the cooler directly to the vegetable compartment as needed, thereby sufficiently cooling the vegetable compartment.

JP 2004-271178 A JP 2007-147112 A

By the way, in the above-mentioned patent document 2, it is proposed to individually control the amount of cool air blown from the cooler to the refrigerating room and the vegetable room, but in a refrigerator having a chilled room whose temperature is lower than that of the refrigerating room, Similarly, for the chilled chamber, it is desirable that the amount of air blown from the cooler can be controlled independently of the refrigerator compartment.
Specifically, the air blow state from the cooler to the chilled room, the refrigerated room and the vegetable room is (1) the state where the chilled room, the refrigerated room and the vegetable room are supplied, A configuration that can be adjusted to at least four stages of a state in which only the chilled room is supplied, (3) a state in which only the chilled room is supplied, and (4) a state in which the chilled room, the refrigerator room, and the vegetable room are not supplied.
At this time, in the refrigerator, the operation efficiency of the refrigerator, that is, the power consumption varies depending on how control is performed to adjust each of the chilled room, the refrigerator room, and the vegetable room to a preset internal temperature. It will be.
Here, in the configuration in which the cold air that has passed through the refrigerated room and the chilled room is supplied to the vegetable room, consider cooling the refrigerated room and the chilled room with priority. In this case, if the temperature of the vegetable room to which the cold air passing through the refrigerated room or chilled room is supplied is high, the temperature of the air returning to the cooler through the vegetable room becomes high. For this reason, the cooling efficiency of the air in the cooler is deteriorated, resulting in a problem that power saving is hindered. In addition, when the chilled chamber is intensively cooled, even if the temperature of the refrigerated chamber in which the chilled chamber is housed is high, there is a problem that the chilled chamber is difficult to be cooled due to the temperature of the chilled chamber.
Accordingly, the present invention has been made in view of the above circumstances, and its object is to achieve power saving by efficiently adjusting the temperature in the chilled room, the refrigerator room, and the vegetable room. It is to provide a refrigerator that can be used.

In order to achieve the above object, the present invention provides a vegetable room, a refrigerated room, a chilled room disposed in the refrigerated room, a cooler for generating cold air, and a chilled room set in advance so that the set temperature in the cabinet decreases in order. Refrigeration room air flow path, vegetable room air flow path and chilled room air flow path for introducing cold air from the cooler to the refrigerating room, the vegetable room and the chilled room, cold air passing through the refrigerating room, A vegetable room return path that leads either or both to the vegetable room, a cooler return path that guides the cold air that has passed through the vegetable room to the cooler, and a cooler room air flow path that cools air from the cooler, the vegetable It is a refrigerator provided with the refrigeration cold air branch part branched into any one or more of a chamber ventilation path and the said chilled chamber ventilation path. The refrigerator has a first air supply state in which the cold air from the cooler is supplied to all of the chilled room air supply path, the refrigerator room air supply path, and the vegetable room air supply path in the refrigerated cold air branching section, the cooling A second blowing state in which the cool air from the cooler is supplied only to the chilled chamber blowing path and the refrigerated chamber blowing path, a third blowing state in which the cool air from the cooler is supplied only to the chilled chamber blowing path, A blowing state switching means for forming at least four stages of blowing states of a fourth blowing state in which the cool air from the cooler is not supplied to all of the chilled chamber blowing path, the refrigeration chamber blowing path, and the vegetable room blowing path; By switching the air blowing state formed by the air blowing state switching means in the order of the first air blowing state, the second air blowing state, the third air blowing state, and the fourth air blowing state. Chamber, constituted the vegetable compartment and the inside temperature of the chilled compartment each as characterized by being further provided with a temperature adjusting means for adjusting the in-compartment temperature setting.
According to the present invention, the time for cooling the chilled room and the chilled room when the vegetable room is not cooled, and the time for cooling the chilled room when the chilled room is not cooled are as much as possible. Since it can be shortened and the time during which the cool air having a high temperature is returned to the cooler can be shortened, the cooling efficiency in the refrigerator can be increased and power saving can be realized.
Further, since the cold air from the cooler can be intensively cooled by flowing only into the chilled room without directly flowing into the refrigerated room or the vegetable room, the chilled room can be cooled. It is also possible to arrange the chamber at an arbitrary position in the refrigerator compartment. For example, in general, the chilled room is disposed at the lowest part where the temperature is lowest in the refrigerated room. However, in the configuration according to the present invention, the chilled room may be disposed at the uppermost part of the refrigerated room. It is.

Specifically, the blowing state switching means is configured to change the first refrigeration state from the first blowing state to the fourth stopping position in at least four stages from the first blowing state in the refrigerated cold air branching portion. It is conceivable to include a ventilation switching member that is movably supported. In this case, the temperature adjusting means switches the position of the air blowing switching member in the order of the first stop position, the second stop position, the third stop position, and the fourth stop position, The internal temperature of each of the refrigerator compartment, the vegetable compartment and the chilled compartment is adjusted to the internal preset temperature. Here, the air blowing switching member has a stop position that varies between at least four stages from the first stop position to the fourth stop position by being rotated about a predetermined rotation axis. It is thought that it is.
In this way, if the present invention is embodied with a simple configuration that only moves the air blowing switching member, the volumetric efficiency of the refrigerator according to the present invention can be improved and the cost can be reduced.
In particular, if the air blowing switching member can be stopped at any position between the first stop position and the fourth stop position, the first stop position (the first air blowing state). From the fourth stop position (the fourth air blowing state), the air flow can be freely adjusted to adjust the temperature.

As a more specific configuration of the present invention, it further comprises temperature detecting means for detecting temperatures of the chilled room, the refrigerated room, and the vegetable room, and the temperature adjusting means is formed by the blowing state switching means. By switching the air blowing state from the first air blowing state to the fourth air blowing state in order according to the temperature detected by the temperature detecting means, the internal temperature of each of the refrigerator compartment, the vegetable compartment, and the chilled compartment Can be adjusted to the set temperature in the cabinet.
For example, the temperature adjusting means switches from the first air blowing state to the second air blowing state when the temperature of the vegetable room reaches the set temperature inside the vegetable room in the first air blowing state. , When the temperature of the refrigerator compartment reaches the set temperature in the refrigerator compartment in the second blowing state, the second blowing state is switched to the third blowing state, and the third blowing state is established. Then, when the temperature of the chilled chamber reaches the set temperature inside the chilled chamber, switching from the third blowing state to the fourth blowing state can be considered.
Thereby, it is possible to cool the vegetable compartment, the refrigerator compartment, and the chilled compartment to a predetermined internal set temperature with high cooling efficiency without overcooling.

According to the present invention, the time for cooling the chilled room and the chilled room when the vegetable room is not cooled, and the time for cooling the chilled room when the chilled room is not cooled are as much as possible. Since it can be shortened and the time during which the cool air having a high temperature is returned to the cooler can be shortened, the cooling efficiency in the refrigerator can be increased and power saving can be realized.
Further, since the cold air from the cooler can be intensively cooled by flowing only into the chilled room without directly flowing into the refrigerated room or the vegetable room, the chilled room can be cooled. It is also possible to arrange the chamber at an arbitrary position in the refrigerator compartment. For example, in general, the chilled room is disposed at the lowest part where the temperature is lowest in the refrigerated room. However, in the configuration according to the present invention, the chilled room may be disposed at the uppermost part of the refrigerated room. It is.

It is a front view of the refrigerator which concerns on embodiment of this invention. It is a sectional side view of the refrigerator which concerns on embodiment of this invention. It is a sectional side view of the refrigerator which concerns on embodiment of this invention. It is the figure which saw through the back part of the refrigerator which concerns on embodiment of this invention from the front. It is a schematic diagram which shows the relationship between the open / close state of a damper and the ventilation state in the refrigeration cold air branching part of the refrigerator which concerns on embodiment of this invention. It is a figure which shows the cold air circuit of the refrigerator which concerns on embodiment of this invention. The flowchart explaining an example of the procedure of the temperature adjustment process performed with the refrigerator which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that the present invention can be understood. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.
First, a schematic configuration of the refrigerator X according to the embodiment of the present invention will be described with reference to FIGS. 1 to 6, and then an example of a temperature adjustment process performed in the refrigerator X will be described with reference to FIG. 7. To do.

  As shown in FIG. 1, the refrigerator X includes a refrigerating room 11, a vegetable room 12, a freezing room 13, an upper freezing room 15, and an ice making room 16. In the refrigerator X, the refrigerator compartment 11 is arranged at the top, the upper freezer compartment 15 on the lower right side, and the ice making room 16 on the lower left side. And the freezer compartment 13 is arrange | positioned at the lower stage of the said upper stage freezer compartment 15 and the said ice making room 16, and the vegetable compartment 12 is arrange | positioned further in the lower stage. As shown in FIG. 3, the refrigerator X has a chilled chamber 14 disposed in the refrigerator compartment 11. The refrigerator compartment 11 and the chilled compartment 14 are separated by a shelf 46.

Here, in the refrigerator X, the set temperatures in the refrigerator compartment 11, the vegetable compartment 12, and the chilled compartment 14 are respectively decreased in the order of the vegetable compartment 12, the refrigerator compartment 11, and the chilled compartment 14. It is set in advance. That is, in the refrigerator X, the set temperature in each storage room is set in advance so that the chilled room 14 <the refrigerator room 11 <the vegetable room 12.
Specifically, the set temperature in the vegetable compartment 12 is a temperature suitable for storing vegetables, for example, about 3 ° C to 8 ° C. Moreover, the set temperature in the refrigerator compartment 11 is lower than the temperature of the vegetable compartment 12, and is about 3 ° C., for example. Further, the set temperature in the chilled chamber 14 is lower than the temperature in the refrigerated chamber 11 and is, for example, about -1 ° C to 1 ° C.
On the other hand, the set temperatures in the freezer compartment 13, the upper freezer compartment 15, and the ice making compartment 16 are lower than that of the chilled compartment 14, and are, for example, about -18 ° C.

Next, the internal configuration of the refrigerator X will be described with reference to FIGS. 2 and 3 are side sectional views of the refrigerator X, FIG. 2 is a sectional view taken along the line AA in FIG. 1, and FIG. 3 is a sectional view taken along the line BB in FIG. FIG. 4 is a perspective view of the back of the refrigerator X from the front.
As shown in FIG. 2, in the refrigerator X, an inner box 2b is arranged inside an outer box 2a covering the outside, and a gap between the outer box 2a and the inner box 2b is filled with a heat insulating material 2c such as urethane foam. ing.
In the refrigerator compartment 11, a plurality of shelves 45 on which refrigerators are placed are provided. The front surface of the refrigerator compartment 11 can be opened and closed by a rotating heat insulating door 3. The heat insulating door 3 is provided with a plurality of storage pockets 47 for placing refrigerated items.
On the other hand, the vegetable compartment 12 and the freezing compartment 13 can be opened and closed by sliding heat insulating doors 4 and 6, respectively, so that the storage containers 55 and 56 can be pulled out. The ice making chamber 16 can be opened and closed by a heat insulating door 5a whose front surface is rotatable. Note that the upper freezer compartment 15 can also be opened and closed by a heat insulating door 5b whose front surface is rotatable (see FIG. 3).

The refrigerator X is provided with a compressor 20 behind the vegetable compartment 12 and a cooler 21 behind the freezer compartment 13.
The compressor 20 includes a condenser (not shown) for condensing a refrigerant such as isobutane on the discharge side via a discharge pipe (not shown), and the cooler (not shown) on the suction side via a suction pipe (not shown). Heat exchangers) 21 are connected to each other. The condenser (not shown) and the cooler 21 are connected via a capillary tube (not shown, a decompression device) that expands the refrigerant. Thereby, in the refrigerator X, a series of refrigeration cycles is configured.
When the refrigerant is circulated in the refrigeration cycle by the operation of the compressor 20, a low-temperature refrigerant is supplied to the cooler 21. Thereby, the cooler 21 generates cool air by heat exchange between the low-temperature refrigerant and air. A defrost heater 62 for defrosting the cooler 21 and a drain receiving member 64 for receiving drain water from the cooler 21 are provided below the cooler 21.

In addition, a cold air blowing duct 23 that guides the cold air from the cooler 21 to the freezer compartment 13 and a refrigerated cold air branching section Y described later is provided at the back of the freezer compartment 13. In addition, the lower part of the said cool air ventilation duct 23 is formed of the inner box 2b and the evaporative cover 33 which consists of a resin molded product.
In the cold air blow duct 23, a blower 22 for blowing the cold air from the cooler 21 to the freezer compartment 13 or a refrigerated cold air branching portion Y described later is provided.
The refrigerated cold air branching portion Y is disposed above the blower 22, and the cold air from the cooler 21 is connected to the refrigerated room 11, the vegetable room 12, and the chilled room 14. One example of a room air supply path), a vegetable room air supply duct 30 (an example of a vegetable room air supply path), and a chilled room air supply duct 29 (an example of a chilled room air supply path) are branched into one or more (see FIG. 3). ). Specifically, the refrigerated cold air branching portion Y is provided with a damper 65 (an example of an air blowing switching member) that adjusts the air blowing destination of the cold air generated by the cooler 21. The operation of the damper 65 will be described in detail later.
Further, a refrigerating room blower 26 is provided above the refrigerating / refrigerating branch Y. Here, in the refrigerator X, the cooler 21, the blower 22, the damper 65, and the refrigerator compartment blower 26 are arranged on a vertical line, and the internal space of the refrigerator X is efficiently used to achieve volume efficiency. Improvements are being made.

Here, the cold air duct 23 communicates with the freezer compartment 13 through inflow ports 13a and 13b and an outflow port 13c provided in the evaporative cover 33, as shown in FIG. The inflow port 13 a is formed between the ice making chamber 16 and the freezing chamber 13. Furthermore, the cold air duct 23 communicates with the upper freezer compartment 15 through an inflow port 15a provided in the evaporation cover 33 (see FIG. 3).
Then, the cold air cooled by the cooler 21 is driven by the blower 22 to the freezer compartment 13 and the upper freezer compartment 15 from the inlets 13a, 13b, and 15a of the evaporation cover 33 through the cold air duct 23. Thereafter, the refrigerant is returned from the freezer compartment 13 to the cooler 21 through the outlet 13c of the evaporative cover 33. As a result, the freezer compartment 13, the upper freezer compartment 15, and the ice making compartment 16 are cooled.

On the other hand, as shown in FIGS. 2 and 3, at the back of the refrigerating room 11, a refrigerating room air duct 28 and a chilled room air duct that guide the cold air from the cooler 21 to the refrigerating room 11 and the chilled room 14 are provided. 29 is provided.
As shown in FIG. 4, the refrigerating room air duct 28 extends upward from the refrigerating / cooling air branching portion Y through the refrigerating room air blower 26, and then branches to the left and right. The refrigerating chamber air duct 28 is formed with discharge ports 37 a to 37 f communicating with the refrigerating chamber 11.
As shown in FIGS. 2 and 4, a ceiling duct 54 that communicates with the refrigeration chamber air duct 28 is provided on the ceiling of the refrigeration chamber 11. The ceiling duct 54 is formed with ceiling discharge ports 43 a and 43 b communicating with the refrigerator compartment 11.
Thus, in the refrigerator X, when the blower 22 and the cold room blower 26 are driven, the cold air from the cooler 21 is guided along the cold room blower duct 28 and the ceiling duct 54, and the discharge The refrigerator compartment 11 is cooled by being discharged from the outlets 37a to 37f and the ceiling discharge ports 43a and 43b.

On the other hand, as shown in FIGS. 3 and 4, the chilled chamber air duct 29 is an air flow path that connects the refrigerated cold air branching portion Y and the chilled chamber 14. In the chilled chamber air duct 29, discharge ports 35a and 35b communicating with the chilled chamber 14 are formed.
Therefore, in the refrigerator X, not only the chilled chamber 14 is cooled by the cold air discharged to the refrigerator compartment 11, but also the outlet of the chilled chamber air duct 29 from the cooler 21 without passing through the refrigerator compartment 11. It is also possible to directly cool by cold air discharged into the chilled chamber 14 through 35a and 35b.

Further, as shown in FIGS. 3 and 4, a vegetable room return duct 35 is provided on the back of the chilled chamber 14 to guide the cold air passing through the refrigerated chamber 11 and the chilled chamber 14 to the vegetable chamber 12. ing. The vegetable compartment return duct 35 is formed with an outlet 35 c communicating with the chilled chamber 14. The vegetable room return duct 35 is connected to the vegetable room merging duct 31 toward the vegetable room 12 on the vegetable room 12 side. Here, the vegetable room return duct 35 and the vegetable room merging duct 31 are an example of the vegetable room return path.
The vegetable room air duct 30 is an air passage that guides the cool air from the cooler 21 to the vegetable room 12, and connects the refrigerated cold air branching portion Y and the vegetable room confluence duct 31. Therefore, in the refrigerator X, the cold air from each of the vegetable room air duct 30 and the vegetable room return duct 35 can be joined by the vegetable room merging duct 31 and guided to the vegetable room 12. Therefore, it is not necessary to provide a ventilation path from each of the refrigerator compartment 11 and the chilled compartment 14 to the vegetable compartment 12, and the volumetric efficiency in the refrigerator X can be increased. Of course, providing them individually is also conceivable as another embodiment.

A discharge part 12a communicating with the vegetable room 12 is formed in the lower part of the vegetable room merging duct 31, and the cold air in the vegetable room merging duct 31 is moved from the discharge part 12a to the outer periphery of the vegetable room 12. After passing, it is returned to the cooler 21 through an outlet 12b (see FIG. 2) formed in the vegetable compartment 12. Thereby, the vegetable compartment 12 is cooled. Here, the return path that is formed by the outlet 12b and guides the cool air that has passed through the vegetable compartment 12 to the cooler 21 is an example of the cooler return path.
In such a configuration, since the cold air that has passed through the refrigerator compartment 11 and the chilled chamber 14 is returned to the cooler 21 via the vegetable compartment 12, the cold air from the refrigerator compartment 11 and the chilled chamber 14 is cooled. There is no need to provide a separate path for returning to the container 21, and the volumetric efficiency in the refrigerator X can be increased.

Here, the refrigerated cold air branching portion Y will be described in detail with reference to FIG. Here, FIGS. 5A to 5D are schematic views showing the relationship between the open / closed state of the damper 65 and the blowing state in the refrigerated cold air branching portion Y. FIG. 5A to 5D below, the cool air from the cooler 21 can be blown to the freezer compartment 13, the upper freezer compartment 15, and the ice making compartment 16.
The damper 65 is connected and supported by driving means such as a driving motor (not shown) (hereinafter referred to as “damper driving means”), and a predetermined driving force (rotational force, etc.) is transmitted from the damper driving means. By rotating about the rotation axis P, the flow path of the cold air from the cooler 21 in the refrigerated cold air branching section Y is opened and closed. Here, the damper 65 and the damper driving means are an example of a blowing state switching means. The air blowing state switching means is not limited to the one using the rotary damper 65, but may be a sliding type as long as the same function is exhibited.

  FIG. 5A shows that the damper 65 causes the cold air from the cooler 21 in the refrigerated cold air branching portion Y to pass through all of the chilled room air duct 29, the refrigerating room air duct 28, and the vegetable room air duct 30. The state which stopped in the 1st stop position which forms the 1st ventilation state supplied to is shown. That is, in the first air blowing state, the cool air from the cooler 21 is supplied to all of the chilled chamber 14, the refrigerator chamber 11, and the vegetable chamber 12 in the refrigerated cold air branching section Y.

  FIG. 5B shows that the damper 65 has a second air flow in which the cool air from the cooler 21 is supplied only to the chilled room air duct 29 and the refrigerating room air duct 28 in the refrigerating cold air branching section Y. The state which stopped in the 2nd stop position which forms a state is shown. That is, in the second blowing state, the cool air from the cooler 21 is supplied only to the chilled chamber 14 and the refrigerating chamber 11 in the refrigerating cold air branching portion Y.

  FIG. 5C shows a third state in which the damper 65 forms a third blowing state in which the cold air from the cooler 21 is supplied only to the chilled chamber air duct 29 in the refrigerated cold air branching portion Y. It shows the state stopped at the stop position. That is, in the third air blowing state, the cold air from the cooler 21 is supplied only to the chilled chamber 14 in the refrigerated cold air branching portion Y.

  FIG. 5D shows that the damper 65 causes the cold air from the cooler 21 in the refrigerated cold air branching portion Y to pass through all of the chilled room air duct 29, the refrigerating room air duct 28, and the vegetable room air duct 30. The state which stopped in the 4th stop position which forms the 4th ventilation state which is not supplied to is shown. That is, in the first air blowing state, the cool air from the cooler 21 is not supplied to all of the chilled chamber 14, the refrigerating chamber 11, and the vegetable chamber 12 in the refrigerating cold air branching portion Y.

  Thus, the stop position of the damper 65 varies between at least four stages from the first stop position to the fourth stop position. In the present embodiment, for convenience of explanation, the damper 65 will be described as an example in which it is supported so as to be movable in at least four stages of FIGS. 5A to 5D. The opening and closing of 65 can be stopped at any position between the first stop position and the fourth stop position, that is, between the first blowing state and the fourth blowing state. It is desirable that the air blowing state can be changed by freely adjusting the position. Thereby, the ventilation volume of the cold air from the cooler 21 to the refrigerator compartment 11, the vegetable compartment 12, and the chilled compartment 14 can be adjusted more finely.

Next, the cold air circuit Z formed in the refrigerator X configured as described above will be described with reference to FIG.
As shown in FIG. 6, in the cold air circuit Z formed in the refrigerator X, the refrigerator 21, the ice making chamber 16, the upper freezer chamber 15, the refrigerated cold air branching portion Y, and the cooler 21. Are arranged in parallel via the blower 22. The upper freezing chamber 15 and the ice making chamber 16 are arranged in series with the freezing chamber 13. And the cold air which passed through the said upper stage freezing room 15, the said ice making room 16, and the said freezing room 13 is returned to the said cooler 21 through the said outflow port 13c (refer FIG. 2).

On the other hand, the refrigerated cold air branching portion Y is connected to the refrigerated room air duct 28, the vegetable room air duct 30 and the chilled room air duct 29. Depending on the stop position of the damper 65, the refrigeration / cold air branching section Y can supply the cool air from the cooler 21 to one or more of the refrigeration room air duct 28, the vegetable room air duct 30 and the chilled room air duct 29. To distribute. The refrigerating room blower 26 is provided on the refrigerating room air duct 28.
And the cold air which passed through the said refrigerator compartment 11 and the said chilled room 14 is mixed with the cold air of the said vegetable compartment ventilation duct 30 by being guide | induced to the said vegetable compartment merging duct 31 through the said vegetable compartment return duct 35, and the said vegetable It is supplied to the chamber 12. Thereafter, the cold air passing through the vegetable compartment 12 is returned to the cooler 21 through the outlet 12b (see FIG. 2).
According to such a configuration, since the cool air whose temperature is relatively low from the cooler 21 is discharged directly to the vegetable room 12, the cold air whose temperature is too low is not supplied to the vegetable room 12. The vegetables stored in can be prevented from becoming a low temperature obstacle and drying. Moreover, since the said vegetable compartment ventilation duct 30 and the said vegetable compartment return duct 35 are merged, the volumetric efficiency in the said refrigerator X can be improved compared with the case where it provides separately.

Further, in the cold air circuit Z, the destination of the cold air from the cooler 21 in the refrigerated cold air branching portion Y is changed depending on the stop position of the damper 65 (see FIG. 5).
Specifically, in a state in which the damper 65 is stopped at the first stop position (see FIG. 5A), the cold air blow duct 23 includes the cold room blow duct 28, the chilled room blow duct 29, and the like. It communicates with all the vegetable room air ducts 30. Therefore, the cool air from the cooler 21 is supplied to all of the cold room air duct 28, the chilled room air duct 29, and the vegetable room air duct 30 through the cold air duct 23. The cold air that has passed through the vegetable compartment 12 is mixed with the return air from the freezer compartment 13 and then cooled by the cooler 21.

In the state where the damper 65 is stopped at the second stop position (see FIG. 5B), in the refrigerated cold air branching portion Y, the cold air blow duct 23 is connected to the cold room blow duct 28 and the chilled air. It communicates only with the chamber air duct 29. Accordingly, the cool air from the cooler 21 is supplied to the refrigerating room air duct 28 and the chilled room air duct 29.
In this case, since the cold air from the cooler 21 is not supplied to the vegetable room air duct 30, the vegetable room 12 is cooled only by the return cold air that has cooled the refrigerator room 11 and the chilled room 14. Therefore, the temperature of the vegetable compartment 12 can be controlled higher than when the damper 65 is stationary at the first stop position (see FIG. 5A), and the vegetable compartment 12 is not cooled too much. The refrigerator compartment 11 and the chilled chamber 14 can be cooled.

In the state in which the damper 65 is stopped at the third stop position (see FIG. 5C), the cold air duct 23 communicates only with the cold room air duct 28 in the refrigerated cold air branching section Y. To do. Accordingly, the cool air from the cooler 21 is supplied to the chilled chamber air duct 29.
In this case, since the cool air from the cooler 21 is not supplied to the vegetable room air duct 30, the vegetable room 12 is cooled only by the return cold air that has cooled the chilled room 14. Therefore, also in this case, the chilled chamber 14 can be cooled without cooling the vegetable chamber 12 too much.
Further, in the refrigerator X, the cold air from the cooler 21 is flowed only into the chilled chamber 14 without flowing directly into the refrigerated chamber 11 or the vegetable chamber 12, thereby giving priority to the chilled chamber 14. Since it can be cooled, the chilled chamber 14 can be arranged at an arbitrary position in the refrigerator compartment 11. For example, in general, the chilled chamber 14 is disposed at the lowermost portion of the refrigerated chamber 11. However, in the configuration according to the present invention, the chilled chamber 14 may be disposed at the uppermost portion of the refrigerated chamber 11. .

In the state where the damper 65 is stopped at the fourth stop position (see FIG. 5D), the cold air blow duct 23 is replaced with the cold room blow duct 28, the chilled room blow duct 29 and the vegetable. It does not communicate with all of the room air ducts 30. Therefore, the cool air from the cooler 21 is not supplied to all of the refrigerator compartment air duct 28, the chilled room air duct 29 and the vegetable compartment air duct 30.
In this case, the cold air from the cooler 21 flows into the freezer compartment 13, the upper freezer compartment 15, and the ice making chamber 16, and the freezer compartment 13, the upper freezer compartment 15, and the ice making compartment 16 are stored. Only the inside is cooled.

In the refrigerator X configured as described above, a temperature adjustment process described below is executed by a control unit (not shown) provided in the refrigerator X (hereinafter referred to as “control unit α”). The internal temperature of each storage room of the refrigerator compartment 11, the vegetable compartment 12, the freezer compartment 13, and the chilled compartment 14 is adjusted to the preset internal preset temperature.
The control unit α includes, for example, a CPU, a RAM, a ROM, and the like, and executes various control processes by executing predetermined control programs by the CPU.
Here, in the present embodiment, in the refrigerator X, a temperature sensor (not shown) such as a thermistor for detecting the internal temperature of the refrigerator compartment 11, the vegetable compartment 12, the freezer compartment 13, and the chilled compartment 14 is provided. , Corresponding to the temperature detecting means). Hereinafter, the temperature sensors corresponding to the refrigerator compartment 11, the vegetable compartment 12, the freezer compartment 13, and the chilled compartment 14 are referred to as "refrigerator compartment temperature sensor", "vegetable compartment temperature sensor", and "freezer compartment temperature sensor". , "Chilled room temperature sensor". The temperature detected by each of the temperature sensors is input to the control unit α, and, as will be described later, the control unit α starts from the first blowing state according to the temperature detected by each of the temperature sensors. The internal temperature of each storage chamber is adjusted by sequentially switching to the fourth blowing state.

Hereinafter, according to the flowchart of FIG. 7, an example of the procedure of the temperature adjustment process executed by the control unit α in the refrigerator X will be described. In the figure, S1, S2,... Represent processing procedure (step) numbers.
As shown in FIG. 7, first, in step S1, the control unit α executes a cooling operation for cooling the refrigerator compartment 11, the vegetable compartment 12, the freezer compartment 13, the chilled compartment 14 and the like in the refrigerator X. Determine if a need arises.
Specifically, the control unit α is used when the power of the refrigerator X is turned on or when the detected temperatures of the various temperature sensors provided in the refrigerator X reach a predetermined cooling start temperature. Therefore, it is determined that it is necessary to execute the cooling operation (Yes side of S1), and the process proceeds to step S2. When there is no need to execute the cooling operation (No side of S1), the determination process in step S1 is repeatedly performed in a timely manner.

In step S2, the control unit α controls the damper driving means (not shown) to rotationally drive the damper 65 to move it to the first stop position (see FIG. 5A). Thereby, the 1st ventilation state in which the cold air produced | generated by the said cooler 21 is supplied to all the said refrigerator compartment 11, the said vegetable compartment 12, the said freezing compartment 13, and the said chilled compartment 14 is formed. The initial position of the damper 65 is the fourth stop position.
In step S3, the controller α starts the cooling operation by driving the compressor 20, the blower 22, and the refrigerator compartment blower 26. As a result, the operation of the refrigeration cycle to which the compressor 20 is connected is started, and the cold air generated by the cooler 21 is supplied to the refrigerator compartment through the cool air blower duct 23 and the like by the blower 22 and the refrigerator refrigerator 26. 11, all of the vegetable compartment 12, the freezer compartment 13 and the chilled compartment 14 are supplied to cool the storage compartments. Therefore, the vegetable compartment 12 is quickly cooled to a low temperature.

Thereafter, in step S4, the controller α determines that the temperature in the vegetable compartment 12 detected by the vegetable compartment temperature sensor (not shown) provided in the vegetable compartment 12 is the inside of the vegetable compartment 12. Wait until the set temperature is reached (No side of S4).
If it is determined that the internal temperature of the vegetable compartment 12 has reached the internal set temperature of the vegetable compartment 12 (Yes in S4), the process proceeds to step S41.

In step S41, the control unit α controls the damper driving means (not shown) to rotationally drive the damper 65 and move it to the second stop position. That is, the first air blowing state is switched to the second air blowing state.
Thereby, after that, in the refrigerator X, the cold air generated by the cooler 21 is supplied to the freezer compartment 13, the refrigerator compartment 11, and the chilled compartment 14, and the vegetable compartment 12 is supplied with the cooling air. A second blowing state in which the cool air from the vessel 21 is not directly supplied is formed. Therefore, in this state, the cold air from the cooler 21 is not directly supplied to the vegetable compartment 12.
At this time, the cold air that has passed through the refrigerator compartment 11 and the chilled compartment 14 is returned to the cooler 21 via the vegetable compartment 12, but the vegetable compartment 12 has already been cooled to a sufficiently low temperature. Therefore, the temperature of the cool air returning to the cooler 21 can be lowered, and the cooling efficiency in the refrigerator X can be increased to save power.

Next, in step S5, the control unit α confirms that the internal temperature of the refrigerating chamber 11 detected by the refrigerating chamber temperature sensor (not shown) has reached the set internal temperature of the refrigerating chamber 11. Wait (No side of S5).
If it is determined that the internal temperature of the refrigerator compartment 11 has reached the internal set temperature of the refrigerator compartment 11 (Yes in S5), the process proceeds to step S51.
In step S51, the control unit α controls the damper drive motor (not shown) to rotationally drive the damper 65 to move it to the third stop position. That is, the second air blowing state is switched to the third air blowing state.
Thereby, after that, in the refrigerator X, the cold air generated by the cooler 21 is supplied to the freezer compartment 13 and the chilled compartment 14, and the refrigerator compartment 11 and the vegetable compartment 12 are supplied with the cooling air. A third blowing state in which the cool air from the vessel 21 is not directly supplied is formed.
At this time, the cold air supplied to the chilled chamber 14 is affected by the temperature of the refrigerator compartment 11, but the refrigerator compartment 11 has already been cooled to a sufficiently low temperature. Therefore, the temperature of the cool air returning to the cooler 21 can be lowered, and the cooling efficiency in the refrigerator X can be increased to save power.

Subsequently, in step S6, the control unit α waits for the internal temperature of the chilled chamber 14 detected by the chilled chamber temperature sensor (not shown) to reach the internal set temperature of the chilled 14. (No side of S6).
If it is determined that the internal temperature of the chilled chamber 14 has reached the internal set temperature of the chilled chamber 14 (Yes in S6), the process proceeds to step S61.
In step S61, the control unit α controls the damper drive motor (not shown) to rotationally drive the damper 65 to move it to the fourth stop position. In other words, the third blowing state is switched to the fourth blowing state.
Thereby, after that, in the refrigerator X, the cold air generated by the cooler 21 is supplied to the freezer compartment 13, and the refrigerator compartment 11, the chilled compartment 14, and the vegetable compartment 12 are cooled. A state where the cool air from the vessel 21 is not directly supplied (corresponding to the fourth blowing state) is formed.

In step S7, the control unit α waits for the inside temperature of the freezer compartment 13 detected by the freezer temperature sensor (not shown) to reach the freezer compartment 13 set temperature. (No side of S7).
When it is determined that the internal temperature of the freezer compartment 13 has reached the internal set temperature of the freezer compartment 13 (Yes in S7), the cooling operation started in step S3 is stopped ( S71). As a result, the series of temperature adjustment processing ends, and the processing returns to step S1.

As described above, in the refrigerator X, the control unit α executes the temperature adjustment process, whereby the stop position of the damper 65 in the refrigerated cold air branching unit Y is set to the first stop position and the second stop position. The stop position, the third stop position, and the fourth stop position are moved in this order, and the blowing state formed in the refrigerator X is changed to the first blowing state, the second blowing state, the first 3 in order of the air blowing state and the fourth air blowing state, the internal temperature of each of the refrigerator compartment 11, the vegetable compartment 12, the freezer compartment 13, and the chilled compartment 14 is adjusted to the internal preset temperature. ing. Here, the control unit α when executing the temperature adjustment processing corresponds to a temperature adjustment unit.
Therefore, the time for cooling the refrigerated chamber 11 and the chilled chamber 14 when the vegetable chamber 12 is not cooled, and the time for cooling the chilled chamber 14 when the refrigerated chamber 11 is not cooled. It is possible to shorten the time as much as possible, and the time for returning the cool air having a high temperature to the cooler 21 can be shortened, so that the cooling efficiency in the refrigerator X can be increased and power saving can be realized.

In the present embodiment, a configuration in which temperature sensors (corresponding to temperature detecting means) are provided in the refrigerator compartment 11, the vegetable compartment 12, the freezer compartment 13, and the chilled compartment 14 will be described as an example. did. On the other hand, in a configuration that does not include the chilled room temperature sensor, the vegetable room temperature sensor, or the like, it is conceivable to control the damper 65 as follows.
That is, when it is necessary to actively cool the vegetable compartment 12, such as when the outside temperature of the refrigerator X is high or when the door is opened and closed frequently, the time for the damper 65 to stop at the first stop position. And then the damper 65 may be brought into the second stop position.
Similarly, when the chilled chamber 14 needs to be positively cooled, such as when the outside temperature of the refrigerator X is high or when the door is opened and closed frequently, the damper 65 is stopped at the second stop position. Then, after the refrigerator compartment 11 reaches the set temperature in the refrigerator compartment 11, the damper 65 is stopped at the third stop position for a certain period of time. Thereafter, the damper 65 may be brought into the fourth stop position.
Even in such a configuration, the chilled chamber 11 is heated in a state where the temperature of the refrigerated chamber 11 and the chilled chamber 14 is high while the temperature of the chilled chamber 11 is high. Since the cooling time of 14 is shortened, the operating efficiency of the refrigerator X can be increased to save power.

2a: outer box 2b: inner box 3, 5, 6: heat insulating door 11: refrigerator compartment 12: vegetable room 13: freezer room 14: chilled room 15: upper freezer room 16: ice making room 20: compressor 21: cooler 22 : Blowers 23, 28, 29, 30, 31: Various blower ducts 26: Refrigerating room blower 33: Eva cover 35a, 35b: Discharge port 35c: Outflow ports 37a-37f: Discharge ports 43a, 43b: Ceiling discharge ports 45, 46: Shelf 47: Storage pocket 54: Ceiling duct 55, 56: Storage container 62: Defrost heater 64: Drain receiving member 65: Damper (an example of a ventilation switching member)
S1, S2,...: Processing procedure (step) number X: Refrigerator

Claims (6)

A vegetable room, a refrigeration room, a chilled room disposed in the refrigeration room, a cooler that generates cold air, and the refrigeration room, the vegetable room from the cooler, which are set in advance so that the set temperature in the cabinet decreases in order One of or both of a refrigeration room air passage, a vegetable room air passage, a chilled room air passage, and the cold air passing through the chilled room and the cold air passing through the chilled room are led to the vegetable room. Any of the vegetable room return path, the cooler return path that guides the cold air that has passed through the vegetable room to the cooler, and the cold air from the cooler, the refrigerator room air supply path, the vegetable room air supply path, and the chilled room air supply path. A refrigerator comprising a refrigerated cold air branching portion that branches into one or more,
In the refrigerated cold air branching section, the first air blowing state in which the cold air from the cooler is supplied to all of the chilled room air blowing path, the cold room air blowing path and the vegetable room air blowing path, the cold air from the cooler is the The second blowing state supplied only to the chilled chamber blowing path and the refrigerator compartment blowing path, the third blowing state where the cool air from the cooler is supplied only to the chilled chamber blowing path, and the cold air from the cooler A blowing state switching means for forming at least four stages of blowing states of a fourth blowing state that is not supplied to all of the chilled chamber blowing path, the refrigerator room blowing path, and the vegetable room blowing path;
By switching the air blowing state formed by the air blowing state switching means in the order of the first air blowing state, the second air blowing state, the third air blowing state, and the fourth air blowing state, Temperature adjusting means for adjusting the internal temperature of each of the vegetable room and the chilled room to the internal set temperature;
The refrigerator characterized by comprising. The air blowing state switching means is supported to be movable in at least four stages from the first stop position where the fourth air blowing state is formed from the first air blowing state to the fourth stop position in the refrigerated cold air branching portion. An air flow switching member
The temperature adjusting means switches the position of the air blowing switching member in the order of the first stop position, the second stop position, the third stop position, and the fourth stop position, thereby the refrigerator compartment. The refrigerator according to claim 1, wherein the inside temperature of each of the vegetable room and the chilled room is adjusted to the set temperature in the room.   The stop position varies between at least four stages from the first stop position to the fourth stop position by rotating the air blowing switching member about a predetermined rotation axis. Item 3. The refrigerator according to Item 2.   The refrigerator according to claim 3, wherein the air blowing switching member can be stopped at an arbitrary position between the first stop position and the fourth stop position. Further comprising temperature detecting means for detecting the temperature of the chilled room, the refrigerator room and the vegetable room,
The temperature adjusting means switches the air blowing state formed by the air blowing state switching means from the first air blowing state to the fourth air blowing state in order according to the temperature detected by the temperature detecting means, whereby the refrigeration The refrigerator in any one of Claims 1-4 which adjusts the internal temperature of each chamber | chamber, the said vegetable compartment, and the said chilled room to the said internal set temperature. The temperature adjusting means is
When the temperature of the vegetable compartment reaches the set temperature in the vegetable compartment in the first blowing state, the first blowing state is switched to the second blowing state,
When the temperature of the refrigerator compartment reaches the set temperature in the refrigerator compartment in the second ventilation state, the second ventilation state is switched to the third ventilation state;
The switch from the third blowing state to the fourth blowing state when the temperature of the chilled chamber reaches a set temperature inside the chilled chamber in the third blowing state. Refrigerator.

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