KR20180069678A - Refrigerator - Google Patents

Abstract

The present invention relates to a refrigerator lowering possibility that the environment of a first storage chamber affects a second storage chamber when the first and second storage chambers with a different temperature zone are cooled by one cooler. According to the present invention, the refrigerator comprises: a compressor to compress and circulate a refrigerant; a cooler to generate cold air by circulation of the refrigerant performed by the compressor; the first storage chamber, wherein the internal temperature thereof is maintained within a first temperature range; the second storage chamber, wherein the internal temperature thereof is maintained within a second temperature range different from the first temperature range; a first cold air flow path to guide the cold air generated in the cooler to the first storage chamber; a second cold air flow path to guide the cold air generated in the cooler to the second storage chamber; and a switching unit guiding the cold air generated in the cooler to be selectively supplied to any one from the first and second cold air flow paths.

Description

Refrigerator {REFRIGERATOR}

The present invention relates to a refrigerator, and more particularly to a refrigerator having a refrigerator.

The cool air generated in the cooler is blown into the space formed by the cooler front plate and the freezer compartment back plate by the blowing power of the fan and is discharged from the holes provided in the freezer compartment back plate to the respective portions of the freezer compartment, The amount of cool air blown into the hearth is controlled by the temperature control device, the amount of cool air is guided to the cool air distribution duct, and the inside of the cool air distribution duct A refrigerator having a structure in which cool air is divided into appropriate amounts and is guided from a discharge port directly to a rear portion of each portion of the refrigerator compartment is known (see, for example, Patent Document 1).

The evaporator, the freezer compartment blower, and the refrigerating compartment blower are disposed in the interior of the cold air passage, and air is blown out from the evaporator at the upstream side of the freezing compartment blower in the direction of cold air circulation, There is also known a refrigerator having a structure in which the cooling air is cooled while passing through the cooling air passage and the cooling air passing through the cooling air passage is discharged from the downstream side of the freezing chamber blower to the freezing chamber through the discharge port and discharged from the downstream side of the refrigerating chamber blower to the refrigerating chamber through the discharge port See Patent Document 2).

Japanese Patent Application Laid-Open No. 4-36576 Japanese Patent Application Laid-Open No. 2016-50678

Here, when cooling the first storage chamber and the second storage chamber having different temperature ranges with one cooler, only the first storage chamber is cooled at the time of cooling the first storage chamber and the first storage chamber and the second storage chamber at the time of cooling the second storage chamber. In the cooling configuration, when the second storage chamber is cooled, the cool air in the first storage chamber flows into the second storage chamber, and the environment of the first storage chamber is likely to affect the second storage chamber.

An object of the present invention is to reduce the possibility that the environment of the first storage chamber influences the second storage chamber when the first storage chamber and the second storage chamber having different temperature zones are cooled by one cooler.

In order to achieve the above object, the present invention provides a refrigerator comprising: a compressor for compressing and circulating a refrigerant; a cooler provided to generate cool air by circulation of the refrigerant by the compressor; A second storage chamber in which the internal temperature of the storage chamber is maintained within a second temperature range different from the first temperature range; a first cool air channel for guiding the cool air generated in the cooler to the first storage chamber; And a switching unit for guiding the cool air generated by the cooler to be selectively introduced into any one of the first cool air passage and the second cool air passage.

Here, the first cold air flow path and the second cold air flow path may share at least one side wall.

Further, the second cool air passage may be disposed at a position relatively far from the first storage compartment than the first cool air passage.

Also, the first temperature range may be relatively lower than the second temperature range.

In this case, when the cold air generated in the cooler by the switching unit is guided to the first cool air channel, the refrigerator interrupts the flow of cool air from the cooler room accommodating the cooler to the second storage room, And the auxiliary switching unit for guiding the cool air from the second storage room to the cooler room in the inflow direction when the generated cold air is guided to the second cold air flow passage.

Further, in this case, the refrigerator may further include a cooling fan for blowing cool air generated in the cooler, and the switching unit may selectively introduce cold air blown by the cooling fan into any one of the first cool air passage and the second cool air passage .

Further, the refrigerator controls the switching unit so that the cold air blown by the cooling fan flows into the first cold air channel, then stops the compressor, activates the cooling fan, and then the cold air blown by the cooling fan is cooled by the second cold air And a processor for controlling the switching unit to flow into the flow path.

In this case, the processor can control the switching unit such that the cool air blown by the cooling fan flows into the second cool air channel when the temperature of the cooler reaches the set temperature or when the set time has elapsed.

In this case, the processor controls the switching unit so that the cool air blown by the cooling fan flows into the second cool air channel, and when the temperature in the second storage chamber or the temperature of the cooler becomes the set temperature or more, If more than the set time for cooling is needed, the compressor can be restarted.

And, the refrigerator can further include an expansion valve having two or more different diameters, and the processor can change the flow rate of the refrigerant by switching to a diameter of any one of two or more different diameters when the compressor is started.

In this case, the processor controls the switching unit so that the cool air blown by the cooling fan flows into the second cool air channel, and when the temperature inside the second storage chamber or the temperature of the cooler becomes the set temperature or more, The cooling fan can be stopped if more than the set time is required to cool the storage compartment.

Then, after stopping the cooling fan, the processor can restart the cooling fan when the temperature of the cooler reaches the set temperature or when the set time has elapsed.

Further, in this case, the processor can continue to operate the cooling fan even when the temperature inside the second storage chamber reaches the target temperature.

Then, when the cooling fan is continuously operated, the processor can open the bypass path for directly guiding the high-temperature refrigerant compressed by the compressor to the cooler.

Then, the processor can close the bypass path when the temperature inside the second storage chamber or the temperature of the cooler reaches the set temperature.

The refrigerator also includes a processor that controls the switching unit so that the cooling fan is operated when the defrosting operation to remove the frost attached to the cooler and the cool air blown by the cooling fan flows into the second cool air channel .

In this case, the processor can stop the cooling fan when the temperature inside the second storage compartment or the temperature of the cooler reaches the set temperature or when the set time has elapsed.

The switching unit may include a first opening communicating with the first cold air flow passage, a second opening communicating with the second cold air passage, and at least one opening / closing member selectively opening / closing either the first opening or the second opening. And an open / close plate of the display device.

Here, the at least one opening and closing plate may include a first opening and closing plate for opening and closing the first opening and a second opening and closing plate for opening and closing the second opening.

The switching unit may further include a driver for driving the first open / close board and the second open / close board.

According to the refrigerator of the present invention, it is possible to reduce the possibility that the environment of the first storage chamber influences the second storage chamber when the first storage chamber and the second storage chamber having different temperature ranges are cooled by one cooler.

1 is an overall view of a refrigerator according to a first embodiment of the present invention.
2 is a whole view of a freezing chamber in a state in which a freezing chamber duct cover and a cooler cover are removed in the first embodiment of the present invention.
Figs. 3A to 3C are diagrams showing a configuration of a freezer compartment duct according to a first embodiment of the present invention. Fig.
4A and 4B are diagrams showing the configuration of a damper used in the first embodiment of the present invention.
5A and 5B are views showing the flow of cool air during cooling of the freezing chamber in the first embodiment of the present invention.
6A and 6B are diagrams showing the flow of cool air during cooling of the refrigerating compartment in the first embodiment of the present invention.
Fig. 7 is a time chart of operation control for increasing the interior of the refrigerating compartment in the first embodiment of the present invention. Fig.
8 is a diagram showing a cooling cycle suitable for use in operation control for making the interior of the refrigerating compartment to be highly humidified in the first embodiment of the present invention.
9A and 9B are views showing the freezing compartment duct wall according to the second embodiment of the present invention viewed from the front side.
10A and 10B are views showing the freezing compartment duct wall according to the third embodiment of the present invention viewed from the front side.

(Overview of the present embodiment)

The present embodiment is a refrigerator that cools a first storage chamber and a second storage chamber having different temperature ranges with one cooler, wherein the cool air in the first storage chamber is introduced into the second storage chamber so that the environment of the first storage chamber is influenced by the second storage chamber It is to suppress the effect. For example, when the first storage chamber is used as the freezing chamber and the second storage chamber is used as the refrigerating chamber, it is possible to suppress the decrease of the humidity in the refrigerating chamber due to the inflow of cold air from the freezing chamber into the refrigerating chamber, And the humidity of the refrigerating compartment of the refrigerator.

Specifically, the refrigerator has a duct structure for realizing cooling at an evaporation temperature suitable for each of the freezing compartment and the refrigerating compartment. That is, the cooling cold air flow paths dedicated to the freezing compartment and the cooling cold air flow paths dedicated to the refrigerating compartment are separately provided in one duct, and the switching of these cooling cold air flow paths is controlled by one damper provided in the duct. Further, the cooling fan and the damper are controlled to optimize the cooling switching between the freezing chamber and the refrigerating chamber.

In addition, the evaporation temperature is controlled by the expansion valve and the capillary tube. That is, by controlling the evaporation temperature at the time of cooling the refrigerating compartment, the humidity in the refrigerating compartment is controlled.

(First Embodiment)

1 is an overall view of a refrigerator 1 according to a first embodiment. As shown in the figure, the refrigerator 1 includes a freezing chamber 10 as an example of a first storage chamber and a refrigerating chamber 20 as an example of a second storage chamber. Further, it includes a partition 30, an upper cool air passage 40, a lower cool air passage 50, and a compressor 60.

1 is a view of the refrigerator 1 viewed from the front. A freezer compartment duct cover 11 and a refrigerator cover 12 are shown in the freezer compartment 10, The duct cover 21 is shown.

The partition (30) divides the freezing chamber (10) and the refrigerating chamber (20). The upper cool air passage 40 is a cool air passage provided in the upper portion of the partition 30 and the lower cool air passage 50 is a cool air passage provided in the lower portion of the partition 30. Details will be described later. The compressor (60) compresses the refrigerant and circulates the refrigerant in the refrigeration cycle.

2 is an overall view of the freezing chamber 10 in a state in which the freezing chamber duct cover 11 and the cooler cover 12 are removed in the first embodiment. As shown in the figure, the freezing chamber 10 includes a freezing chamber duct wall 13, a damper 14, a cooling fan 15, and a cooler 16.

The freezing chamber duct wall 13 is a wall surface provided in the freezing chamber duct. The damper 14 is an example of the switching means and is provided in the freezer compartment duct and switches the flow path of cool air blown by the cooling fan 15, the details of which will be described later. The cooling fan 15 is a fan for blowing cool air generated by the cooler 16 into the refrigerator 1. [ The cooler 16 generates cool air for cooling the inside of the refrigerator 1 by evaporating the coolant.

Although not shown, when the refrigerating compartment duct cover 21 is removed from FIG. 1, there is a refrigerating compartment duct. On the other hand, there is no cooler in the refrigerating chamber 20. That is, the refrigerator 1 shown in Fig. 1 cools the freezer compartment 10 and the refrigerating compartment 20 with one cooler 16.

3 (a) to 3 (c) are views showing the structure of a freezer compartment duct according to the first embodiment.

3 (a) shows a freezer compartment duct cover 11. As shown in the drawing, openings 111, 112, and 113 are provided in the freezer compartment duct cover 11. Although three openings 111, 112 and 113 are provided here, the number of openings is not limited thereto.

3 (b) is a view of the freezing compartment duct wall 13 when viewed from the front, and FIG. 3 (c) is a view of the freezing compartment duct wall 13 when viewed from the side. As shown by an arrow 101 in FIG. 3 (b), on the front surface of the freezing compartment duct wall 13, there is provided a freezing compartment cooling channel 131 (one example of a first cooling air passage used for cooling the freezing compartment 10) Is formed.

As shown by the arrow 103 in FIG. 3 (c) and the arrow 103 in FIG. 3 (b), on the back surface of the freezing chamber duct wall 13, A refrigerating chamber cooling flow path 132 as an example of the second cold air flow path is formed. Here, the freezing chamber cooling flow path 131 and the refrigerating chamber cooling flow path 132, which are two flow paths, are formed in a single flow path.

One sidewall forming the freezing compartment cooling flow path 131 and one sidewall forming the refrigerating compartment cooling flow path 132 are provided as the common side wall 133. [

Further, the freezing compartment cooling channel 131 and the freezing compartment cooling channel 132 are formed individually by the partition 134. [

The freezing compartment duct wall 13 is provided with a damper 14 for switching the freezing compartment cooling flow passage 131 and the refrigerating compartment cooling flow passage 132 and a cooling fan 15 for blowing cold air.

By such a flow path configuration, it is possible to achieve a space reduction in comparison with a case where two flow paths are completely separated. Further, since the side wall is shared, the cold air leakage can be suppressed, leading to a reduction in the material cost.

As described above, the refrigerating compartment cooling channel 132 is provided outside the freezing compartment cooling channel 131 (the side opposite to the freezing compartment duct cover 11). That is, the freezing compartment cooling flow path 131 is provided on the side closer to the freezing compartment 10, and the refrigerating compartment cooling flow path 132 is provided on the side farther from the freezing compartment 10.

4 (a) and 4 (b) are diagrams showing the structure of the damper 14. As shown in Fig. As shown in the figure, the damper 14 includes a freezing chamber cooling flow passage opening 141 in the direction toward the freezing compartment cooling flow passage 131, a refrigerating compartment cooling flow opening 141 in the direction toward the refrigerating compartment cooling flow passage 132, (142), and an opening / closing plate (143).

For example, as shown in Fig. 4 (a), when the opening / closing plate 143 is oriented in the vertical direction, the freezing compartment cooling flow passage opening 141 is opened and the refrigerating compartment cooling flow passage opening 142 is closed do. 4 (b), when the opening / closing plate 143 is oriented in the horizontal direction, the freezing compartment cooling passage opening 141 is closed and the refrigerating compartment cooling passage opening 142 is opened.

Although not shown, any one of the flow passage opening 141 for cooling the freezing compartment and the flow passage opening 142 for the refrigerating compartment cooling is half-opened so that both the freezing compartment cooling passage 131 and the refrigerating compartment cooling passage 132 It is also possible to blow cold air.

Next, the flow of cool air during cooling of the freezing chamber 10 and during cooling of the refrigerating chamber 20 will be described.

Figs. 5 (a) and 5 (b) show the flow of cool air during cooling of the freezing chamber 10. Fig.

5B, the cool air having passed through the cooler 16 is sucked by the cooling fan 15 from the fan suction port on the back surface of the freezer compartment duct wall 13 as indicated by the arrow 181, And is discharged in the direction toward the damper 14 as indicated by an arrow 182. [

5 (b), the damper 14 is opened in the direction of the arrow 183 because the freezing chamber cooling flow passage opening 141 is fully opened (the refrigerating chamber cooling flow passage opening 142 is completely closed) Only the freezing chamber cooling flow path 131 is passed.

5A, the cold air flows from the openings 111, 112 and 113 formed in the freezing chamber duct cover 11 to the inside of the freezing chamber 10, as indicated by arrows 184, 185 and 186, So that only the freezing chamber 10 is cooled. That is, the cold air is not discharged into the refrigerating chamber 20.

Since one sidewall of the freezing compartment cooling channel 131 and one sidewall of the refrigerating compartment cooling channel 132 are provided on the common side wall 133 (see FIG. 3 (b)), It is possible to lower the air temperature by the heat transfer to the inside of the refrigerating compartment cooling flow path 132 through the common side wall 133 while cooling the refrigerating compartment 20 to increase the cooling rate at the time of cooling the refrigerating compartment 20, And further energy saving becomes possible.

6 (a) and 6 (b) show the flow of cool air during cooling of the refrigerating chamber 20.

6A, the cool air having passed through the cooler 16 is sucked by the cooling fan 15 from the fan suction port on the back surface of the freezer compartment duct cover 11 as shown by the arrow 191, And is discharged in the direction of the damper 14, as indicated by an arrow 192.

6 (a) and 6 (b), the damper 14 is configured such that the refrigerant compartment cooling channel opening 142 is completely opened (the freezing compartment cooling channel opening 141 is completely closed) As indicated by arrows 193 and 194, pass through only the refrigerating compartment cooling channel 132. [

6 (a), the cold air is guided to the refrigerating compartment duct via the upper refrigerating compartment flow passage 40, as indicated by the arrow 195, and is guided to the refrigerating compartment duct cover 21 by several openings Only the refrigerating compartment 20 is cooled. That is, no cold air is discharged into the freezing chamber 10.

During cooling of the refrigerating compartment 20, there is no inflow of cold air in the cooling temperature range of the freezing compartment 10, which is relatively low in temperature and low in humidity compared to the refrigerating compartment 20, so that the humidity in the refrigerating compartment 20 can be prevented from decreasing.

Since the refrigerating compartment cooling channel 132 is located outside the freezing compartment cooling channel 131 (on the side opposite to the freezing compartment duct cover 11), the refrigerant passing through the refrigerating compartment cooling channel 132 during cooling of the refrigerating compartment 20 It is possible to prevent the cool air in the high temperature zone from being directly transmitted to the freezer compartment duct cover 11 as compared with the cooling temperature range of the freezer compartment 10, thereby suppressing the temperature rise in the freezer compartment 10, .

Next, with reference to Fig. 1 again, the upper side cool air passage 40 and the lower side air passage 50 will be described.

As described above, the upper cool air passage 40 is used as a channel for guiding cool air having passed through the cooler 16 to the cold room duct.

On the other hand, the lower coolant passage 50 is a flow passage used as a return flow passage for returning cool air used for cooling in the refrigerating chamber 20 to the cooler 16 provided in the freezing chamber 10. [

A damper (not shown) as an example of second switching means is provided in the lower side cold air flow path 50 and the damper is opened during the cooling of the refrigerating chamber 20 to serve as a return flow path. On the other hand, during the cooling of the freezing chamber 10, the damper is closed so that the cold air can not flow between the freezing chamber 10 and the refrigerating chamber 20, and the cold and humid cold air in the freezing chamber 10 flows into the refrigerating chamber 20 It is possible to prevent the humidity in the refrigerating chamber 20 from being lowered.

The refrigerator 1 further includes a processor (not shown) for controlling the opening and closing of the damper 14, the cooling fan 15, the compressor 60 and the valves.

Hereinafter, operation control for making the inside of the refrigerating compartment 20 highly humidified will be described.

Fig. 7 shows a time chart of such operation control.

As shown in the time chart 71, the humidity in the refrigerating compartment 20 is set such that the refrigerating compartment cooling channel opening 142 is opened when the refrigerating compartment 20 is cooled, that is, when the damper 14 is located on the refrigerating compartment 20 side It is necessary to suppress the decrease in humidity at the time of cooling the refrigerating compartment 20.

The decrease in the humidity at the time of cooling the refrigerating compartment 20 is mainly caused by the dehumidification due to the lower temperature of the refrigerating compartment 16 and therefore the temperature of the refrigerating compartment 16 is raised at the time of cooling the refrigerating compartment 20 need.

The time t1 of the time chart 73, the time t11 of the time chart 74 and the time t1 of the time chart 75 indicate control at the start of cooling of the refrigerating compartment 20. That is, the compressor 60 is stopped at the time t1 before the flow path is switched at the time t11 by the damper 14 shown in Figs. 4 (a) and 4 (b) The temperature of the cooler 16 is raised in advance before the cold air is sent into the refrigerating chamber 20. Here, the time t11 may be determined by the temperature of the cooler 16 or may be determined by the elapsed time after the stop of the compressor 60. [ For example, when it is determined that the temperature of the cooler 16 has exceeded the predetermined temperature, or when it is determined that the predetermined time has elapsed since the stop of the compressor 60, the damper 14 is switched to the refrigerating chamber 20, It is preferable to start cooling by sending cool air into the heat exchanger.

During the cooling of the refrigerating compartment 20, the air inside the refrigerating compartment 20 circulates, and there is a possibility that the temperature of the cooler 16 rises to reach a temperature at which the inside of the refrigerating compartment 20 can not be cooled . Therefore, when the temperature inside the refrigerating compartment 20 or the temperature of the cooler 16 becomes equal to or higher than a predetermined temperature, that is, when the descending gradient of the temperature in the refrigerating compartment 20 becomes equal to or less than a predetermined gradient, So that uncooled (uncooled) is prevented. Alternatively, when a predetermined time or longer is required to cool the inside of the refrigerating chamber 20, the compressor 60 may be restarted to prevent uncooling (non-cooling). In the time chart (73), the restart timing of the compressor (60) is indicated at time (t12).

In the same case, the cooling fan 15 may be stopped to prevent uncooling (non-cooling). In the time chart 75, the timing of stopping the cooling fan 15 is indicated at time t13. In this case, the temperature of the cooler 16 is raised by operating the cooling fan 15 again at time t14. Here, the time t14 may be determined by the temperature of the cooler 16 or may be determined by the elapsed time after the cooling fan 15 stops. For example, when it is determined that the temperature of the cooler 16 has reached a predetermined temperature or when it is determined that a predetermined time has elapsed since the cooling fan 15 was stopped, the cooling fan 15 may be operated again .

Thereafter, when the temperature in the refrigerating compartment 20 reaches the target temperature at the time t2, the cooling of the refrigerating compartment 20 is terminated and the refrigerator is in the stop mode. In this stop mode, the cooling fan 15 is continuously operated to raise the temperature of the cooler 16, as shown in the time chart 75. By doing so, the temperature of the cooler 16 can be made higher than 0 ° C, the humidity in the refrigerating chamber 20 can be raised, and the frost attached to the cooler 16 can be removed.

7, the refrigerator 1 periodically performs the defrosting operation for removing the frost attached to the cooler 16. Therefore, during the defrosting operation, the damper 14 is moved to the refrigerator compartment (not shown) 20, and the cooling fan 15 may be operated. By doing so, the moisture generated by defrosting can be sent to the inside of the refrigerating chamber 20, and the humidity inside the refrigerating chamber 20 can be raised by a process other than the cycle shown in Fig.

When the value of the temperature sensor for detecting the temperature of the cooler 16 or the refrigerating chamber 20 reaches a predetermined value or when a predetermined time has elapsed since the start of operation of the cooling fan 15, By stopping the fan 15, the temperature in the refrigerating chamber 20 can be prevented from exceeding the predetermined temperature.

8 shows a cooling cycle suitable for use in the operation control for making the interior of the refrigerating compartment 20 highly humidified. As shown in the drawing, the cooling cycle includes a cooler 16, a compressor 60, a three-way selector valve 61, a condenser 62, a variable expansion valve 63, a capillary tube 64, . The cooling cycle also includes a bypass path 65. [

That is, in this cooling cycle, the variable expansion valve 63 realizes an expansion mechanism having two or more different diameters. As described above, when the compressor (60) is restarted during the cooling of the refrigerating compartment (20), the temperature of the refrigerating compartment (16) decreases, which causes a decrease in the humidity in the refrigerating compartment (20). Therefore, only when the refrigerator compartment 20 is cooled, the refrigerant flow rate is changed by the variable expansion valve 63 so that the temperature of the refrigerator 16 is increased and the refrigerator compartment 20 is cooled.

Also, in this cooling cycle, as described above, the bypass path 65 for directly sending the high-temperature refrigerant compressed by the compressor 60 to the cooler 16 is provided. Here, the flow path of the refrigerant to the bypass path 65 is performed by the three-way switching valve 61. The high-temperature refrigerant is flowed to the bypass path 65 through the three-way selector valve 61 and the cooling fan 15 is operated while the freezing chamber 10 and the refrigerating chamber 20 are completely cooled, The temperature can be made higher than 0 DEG C, the humidity in the refrigerating chamber 20 can be raised, and the frost attached to the cooler 16 can be removed.

When the value of the temperature sensor for detecting the temperature of the cooler 16 or the refrigerating chamber 20 reaches a predetermined value, the bypass path 65 is closed so that the temperature in the refrigerating chamber 20 is equal to or higher than a predetermined temperature .

According to the present embodiment, in the refrigerator for cooling the first storage chamber and the second storage chamber having different temperature ranges by one cooler, it is possible to suppress the environment of the first storage chamber from affecting the second storage chamber at low cost.

(Second Embodiment)

The refrigerator 1 in the second embodiment is the same as that described in the first embodiment except for the inside of the freezer compartment duct, and the description is omitted.

9 (a) and 9 (b) are views of the freezing compartment duct wall 83 in the second embodiment when viewed from the front side.

As shown by arrows 801, 802 and 803 in FIG. 9A, on the left side of the front face of the freezing chamber duct wall 83, a freezing chamber (not shown) as an example of a first cooling flow passage used for cooling the freezing chamber 10, A cooling passage 831 is formed. As shown by arrows 804, 805 and 806 in FIG. 9 (b), on the right side of the front side of the freezing room duct wall 83, an example of the second cooling air flow path used for cooling the refrigerating compartment 20 A refrigerating chamber cooling flow path 832 is formed.

9 (a) and 9 (b), the freezing compartment cooling channel 831 and the freezing compartment cooling channel 832 are individually formed by the partition 834.

A damper 84 as an example of switching means for switching the freezing compartment cooling flow passage 831 and the refrigerating compartment cooling flow passage 832 and a cooling fan 15 for blowing cold air are provided in the freezing compartment duct wall 83 do.

Here, the damper 84 has a drive portion 840, a flow passage opening 841 for freezing chamber cooling, a flow passage opening 842 for cooling the refrigerating chamber, and open / close plates 843 and 844, 841 and the cooling passage opening 842 for cooling the refrigerating compartment can be independently opened and closed.

9A, for example, when the opening / closing plate 843 is tilted and the opening / closing plate 844 is raised, the freezing compartment cooling flow passage opening 841 is opened and the refrigerating compartment cooling flow passage opening 842 are closed. 9 (b), the freezing compartment cooling flow passage opening 841 is closed and the refrigerating compartment cooling flow passage opening 842 is closed when the open / close plate 843 is set up and the open / close plate 844 is torn down. Lt; / RTI >

By using such a damper 84, the freezing compartment cooling channel 831 and the refrigerating compartment cooling channel 832 are formed in the form of being included in one channel on the same plane. Thus, in the second embodiment, the entirety of the freezing compartment duct can be made thinner.

Even in such a configuration, since the freezing compartment cooling channel 831 and the freezing compartment cooling channel 832 are reliably separated by the partition 834, a high humidifying effect equivalent to that of the first embodiment can be obtained.

In addition, in the first embodiment, the operation control for making the inside of the refrigerating chamber 20 highly humidified as described with reference to Figs. 7 and 8 is also applicable to the second embodiment.

(Third Embodiment)

The refrigerator 1 in the third embodiment is the same as that described in the first embodiment except for the inside of the freezer compartment duct, and the description thereof will be omitted.

10 (a) and 10 (b) are views of the freezing compartment duct wall 93 in the third embodiment viewed from the front side.

As shown by the arrows 901, 902 and 903 in FIG. 10 (a), on the left side of the front face of the freezing chamber duct wall 93, there is provided a freezing chamber as an example of the first cooling flow passage used for cooling the freezing chamber 10, A cooling passage 931 is formed. As shown by arrows 904, 905 and 906 in FIG. 10 (b), on the right side of the front side of the freezing chamber duct wall 93, an example of a second cold air heater used for cooling the refrigerating chamber 20 A cooling passage 932 for cooling the refrigerating compartment is formed.

10 (a) and 10 (b), the freezing compartment cooling channel 931 and the freezing compartment cooling channel 932 are individually formed by the partition 934.

A damper 94 as an example of switching means for switching the freezing compartment cooling channel 931 and the refrigerating compartment cooling channel 932 and a cooling fan 15 for blowing cool air are provided in the freezing compartment duct wall 93 do.

The damper 94 has a drive portion 940, a freezing chamber cooling flow passage opening 941, a freezing compartment cooling flow passage opening 942 and an opening and closing plate 943, 940 in the fan-shaped range of about 90 degrees.

10 (a), when the opening / closing plate 943 is rotated to the rightmost side of the fan shape, the freezing compartment cooling flow passage opening 941 is opened and the refrigerating compartment cooling flow passage opening 942 Is closed. 10 (b), when the opening / closing plate 943 is rotated to the leftmost side of the fan shape, the freezing compartment cooling flow passage opening 941 is closed and the refrigerating compartment cooling flow passage opening 942 is closed Is opened.

Also by using such a damper 94, the same effects as those of the second embodiment can be obtained, and it is also possible to obtain a high humidifying effect equivalent to that of the first embodiment.

In addition, in the first embodiment, the operation control for making the inside of the refrigerating compartment 20 highly humidified as described with reference to Figs. 7 and 8 is also applicable to the third embodiment.

(Fourth Embodiment)

In the first to third embodiments, any one of the two system flow paths for blowing cold air to the freezing chamber and the refrigerating chamber is selected by switching control by the damper, but the present invention is not limited to this. If it is possible to select one of the two flow paths, for example, a one-way valve or an open-close valve having solenoid opening / closing mechanism may be provided for each flow channel. The same effects as those of the third embodiment can be obtained.

Alternatively, in the first to third embodiments, one cooling fan 15 is provided. By switching control of the cool air blown by the cooling fan 15 by the damper, the two systems of flow paths to the freezing chamber and the refrigerating chamber , But the present invention is not limited thereto. Two cooling fans may be provided and cool air may be sent to either one of the two flow paths to the freezing chamber and the refrigerating chamber by on / off control of these cooling fans. Specifically, the freezing room fan corresponding to the flow path to the freezing compartment and the refrigerator compartment fan corresponding to the flow path to the refrigerating compartment are provided, and when the cool air is sent only to the free compartment, the freezing compartment fan is turned on, When the cool air is sent only to the flow path toward the refrigerating compartment, the freezing compartment fan is turned off and the refrigerating compartment fan is turned on. In this case, the freezing room fan and the refrigerator room fan are examples of switching means.

The foregoing has shown and described specific embodiments. However, it should be understood that the present invention is not limited to the above-described embodiment, and various changes and modifications may be made without departing from the technical idea of the present invention described in the following claims .

1: Refrigerator
10: Freezer
11: Freezer duct cover
111, 112, 113: opening
12: Cooler cover
13, 83, 93: Freezer duct wall
131, 831, and 931: a flow path for cooling the freezing compartment
132, 832, and 932:
133: Shared side wall
134, 834, 934: partition
14, 84, 94: a damper
840, 940:
141, 841, 941: Flow passage for cooling the freezing compartment
142, 842, 942: flow passage opening for cooling the refrigerating compartment
143, 843, 844, 943: opening / closing plate
15: Cooling fan
16: Cooler
20: Cold storage room
21: Refrigerated room duct cover
30: partition
40: upper cool air passage
50: Lower cool air passage
60: Compressor

Claims (20)

A compressor for compressing and circulating refrigerant;
A cooler provided to generate cold air by circulation of the refrigerant by the compressor;
A first storage chamber whose internal temperature is maintained within a first temperature range;
A second storage chamber whose internal temperature is maintained within a second temperature range different from the first temperature range;
A first cool air passage for guiding the cool air generated in the cooler to the first storage chamber;
A second cool air passage for guiding cool air generated in the cooler to the second storage chamber; And
A switching unit for guiding the cool air generated by the cooler to selectively flow into the first cool air passage and the second cool air passage; . The method according to claim 1,
Wherein the first cold air flow path and the second cold air flow path share at least one side wall. The method according to claim 1,
And the second cool air passage is disposed at a position relatively far from the first storage compartment than the first cool air passage. The method according to claim 1,
Wherein the first temperature range is relatively lower than the second temperature range. The method according to claim 1,
The cool air generated from the cooler by the switching unit is guided to the first cool air passage, the cool air is prevented from flowing from the cooler room accommodating the cooler to the second storage room,
And a second switching unit for guiding the cool air from the second storage room to the cooler room in an inflow direction when cool air generated in the cooler by the switching unit is guided to the second cool air passage. The method according to claim 1,
Further comprising a cooling fan for blowing cool air generated in the cooler,
Wherein the switching unit guides cold air blown by the cooling fan to selectively flow into any one of the first cold air passage and the second cold air passage. The method according to claim 6,
After the switching unit is controlled so that the cool air blown by the cooling fan flows into the first cool air passage,
After the compressor is stopped and the cooling fan is operated,
And controls the switching unit so that the cool air blown by the cooling fan flows into the second cool air channel. 8. The method of claim 7,
Wherein the processor controls the switching unit such that cool air blown by the cooling fan flows into the second cool air channel when the temperature of the cooler reaches a set temperature or when a predetermined time has elapsed. 8. The method of claim 7,
The processor controls the switching unit so that the cool air blown by the cooling fan flows into the second cool air channel,
And restarts the compressor when the temperature inside the second storage chamber or the temperature of the cooler becomes equal to or higher than the set temperature, or when the time required for cooling the second storage chamber is longer than the predetermined time. 10. The method of claim 9,
Further comprising an expansion valve having two or more different diameters,
Wherein the processor changes the flow rate of the refrigerant by switching to a diameter of any one of the two or more different diameters when the compressor is operated. 8. The method of claim 7,
The processor controls the switching unit so that the cool air blown by the cooling fan flows into the second cool air channel,
And stops the cooling fan when the temperature inside the second storage chamber or the temperature of the cooler becomes equal to or higher than the set temperature, or when the time required for cooling the second storage room is exceeded. 12. The method of claim 11,
Wherein the processor restarts the cooling fan when the temperature of the cooler reaches a set temperature or after a predetermined time has elapsed after the cooling fan is stopped. 8. The method of claim 7,
Wherein the processor continuously operates the cooling fan even when a temperature inside the second storage chamber reaches a target temperature. 14. The method of claim 13,
Wherein the processor opens the bypass path for directly guiding the refrigerant compressed by the compressor to the cooler when the cooling fan is operated. 15. The method of claim 14,
Wherein the processor closes the bypass path when the temperature inside the second storage compartment or the temperature of the cooler reaches a set temperature. The method according to claim 6,
And a processor for activating said cooling fan during a defrosting operation for said cooler and controlling said switching unit so that cool air blown by said cooling fan flows into said second cool air channel. 17. The method of claim 16,
Wherein the processor stops the cooling fan when a temperature inside the second storage room or a temperature of the cooler reaches a set temperature or when a predetermined time has elapsed. The method according to claim 1,
The switching unit,
A first opening communicating with the first cold air flow path,
A second opening communicating with the second cold air flow passage,
And at least one opening / closing plate for selectively opening or closing any one of the first opening and the second opening. 19. The method of claim 18,
Wherein the at least one opening /
A first opening / closing plate for opening / closing the first opening;
And a second opening / closing plate for opening / closing the second opening. 20. The method of claim 19,
And a driving unit for driving the first opening / closing plate and the second opening / closing plate.

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