JP2021036189A - refrigerator - Google Patents

Abstract

To reduce a risk in which an environment of a first storage room causes impact on a second storage room when cooling the first storage room and the second storage room having different temperature zone with one cooler.SOLUTION: A refrigerator includes: a compressor for compressing and circulating the refrigerant; a cooler for generating cooled air by circulation of refrigerant by the compressor; a first storage room which is a storage room of a first temperature zone; a first air path which is an air path into the first storage room and which is formed on a duct wall of the first storage room; a second storage room which is a storage room of a second temperature zone which is different from the first temperature zone; a second air path which is an air path into the second storage room and which is formed on the duct wall; and switching means for switching by one switching mechanism such that the cooled air generated by the cooler flows alternately into either one of the first air path and the second air path. The first air path and the second air path are formed in parallel on front-back sides on the duct wall to share the duct wall in common.SELECTED DRAWING: Figure 3

Description

The present invention relates to a refrigerator.

The cold air generated by the cooler is blown into the space formed by the cooler front plate and the freezing chamber back plate by the wind blown by the fan, and on the one hand, it is discharged to each part of the freezing chamber through the holes provided in the freezing chamber back plate, and on the other hand Along with being blown to the temperature control device through the cold air passage, the amount of cold air blown into the refrigerator is adjusted by the temperature control device, and the adjusted cold air is guided to the cold air distribution duct, and further, the cold air distribution duct. There is known a refrigerator in which cold air is divided into an appropriate amount inside the freezing chamber and directly guided to the rear part of each part of the refrigerating chamber from a discharge hole (see, for example, Patent Document 1).

A cold air passage extending in the vertical direction in the refrigerator is provided behind the refrigerator compartment and the freezer compartment, and an evaporator, a freezer blower, and a refrigerator blower, which are coolers, are arranged inside the cold air passage, and the cold air flow of the freezer blower is arranged. On the upstream side in the direction, the air is cooled while passing through the evaporator to become cold air, and the cold air flowing through the cold air passage is discharged to the freezer chamber through the discharge port on the downstream side of the freezer blower, and is discharged to the freezer chamber on the downstream side of the refrigerator blower. A refrigerating chamber that is discharged to the refrigerating chamber through the refrigerator is also known (see, for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 4-366576 Japanese Unexamined Patent Publication No. 2016-50678

Here, when cooling the first storage chamber and the second storage chamber having different temperature zones with one cooler, when the first storage chamber is cooled, only the first storage chamber is cooled, and the second storage chamber is cooled. In the configuration in which the first storage chamber and the second storage chamber are cooled when the storage chamber is cooled, the cold air of the first storage chamber invades the second storage chamber when the second storage chamber is cooled, and the first storage chamber is cooled. The environment of the storage room may affect the second storage room.

An object of the present invention is that the environment of the first storage chamber may affect the second storage chamber when cooling the first storage chamber and the second storage chamber having different temperature zones with one cooler. It is to reduce the sex.

For this purpose, the present invention comprises a compressor that compresses and circulates the refrigerant, a cooler that generates cold air by circulating the refrigerant by the compressor, and a first storage that is a storage chamber in a first temperature zone. A first air passage, which is an air passage to the first storage chamber, formed on the duct wall of the chamber and the first storage chamber, and a storage chamber in a second temperature zone different from the first temperature zone. The second storage chamber, the second air passage that is the air passage to the second storage chamber formed on the duct wall, and the cold air generated by the cooler are the first air passage and the second air passage. A switching means for switching by one switching mechanism is provided so that the air passages alternately flow into one of the air passages, and the first air passage and the second air passage are formed parallel to the front and back of the duct wall, and the duct is formed. Provide a refrigerator that shares the wall.

Here, the first temperature zone may be a freezing temperature zone, and the second temperature zone may be a refrigerating temperature zone.

In this case, when the refrigerator is switched by the switching means so that the cold air generated by the cooler flows into the first air passage, the cool air is moved from the cooler chamber for accommodating the cooler to the second storage chamber. When the cooling air generated by the cooler is switched by the switching means so as to flow into the second air passage, the second storage chamber is switched to the cooler chamber for accommodating the cooler. It may be further provided with a second switching means for switching so that cold air can enter.

Further, in this case, the refrigerator is further provided with a cooling fan for blowing the cold air generated by the cooler, and the switching means is such that the cold air blown by the cooling fan is sent to one of the first air passage and the second air passage. It may be one that switches so that it flows in alternately.

Further, in the refrigerator, after controlling the switching means so that the cold air blown by the cooling fan flows into the first air passage, the compressor is stopped and the cooling fan is operated, and then the air is blown by the cooling fan. It may be further provided with a control means for controlling the switching means so that the cooled air flows into the second air passage.

In this case, the control means controls the switching means so that the cold air blown by the cooling fan flows into the second air passage, and then the temperature of the second storage chamber or the temperature of the cooler is equal to or higher than a predetermined temperature. When the temperature becomes high, or when it takes more than a predetermined time to cool the second storage chamber, the compressor may be operated again. Then, the control means may be one that changes the flow rate of the refrigerant by switching the diameters of the expansion mechanisms having two or more different diameters when the compressor is operated again.

Further, in this case, the control means controls the switching means so that the cold air blown by the cooling fan flows into the second air passage, and then the temperature of the second storage chamber or the cooler is predetermined. The cooling fan may be stopped when the temperature rises above the temperature or when it takes a predetermined time or longer to cool the second storage chamber. Then, the control means is to operate the cooling fan again when the temperature of the cooler reaches a predetermined temperature after stopping the cooling fan or when a predetermined time elapses. You can.

Further, in this case, the control means may be one that continuously operates the cooling fan even when the temperature of the second storage chamber reaches the target temperature.

Further, in the refrigerator, when the defrosting operation for removing the frost adhering to the cooler is performed, the cooling fan is operated, and the switching means is provided so that the cold air blown by the cooling fan flows into the second air passage. It may be further provided with a control means for controlling.

In this case, the control means may be one that stops the cooling fan when the temperature of the cooler or the second storage chamber reaches a predetermined temperature or when a predetermined time has elapsed. ..

Further, the present invention includes a compressor that compresses and circulates a refrigerant, a cooler that generates cold air by circulating a refrigerant by the compressor, a first storage chamber that is a storage chamber in a first temperature zone, and a first storage chamber. A first air passage, which is an air passage to the first storage chamber, and a second air passage, which is a storage chamber in a second temperature zone different from the first temperature zone, formed on the duct wall of the first storage chamber. The storage chamber, the second air passage that is the air passage to the second storage chamber formed on the duct wall, and the cold air generated by the cooler of the first air passage and the second air passage. A switching means for switching by one switching mechanism is provided so that the air flows alternately to one side, and the first air passage and the second air passage are formed parallel to the left and right of the partition provided on one side of the duct wall. It also provides a refrigerator that shares the duct wall.

According to the present invention, when cooling the first storage chamber and the second storage chamber having different temperature zones with one cooler, the environment of the first storage chamber may affect the second storage chamber. It is possible to reduce the sex.

It is an overall view of the refrigerator in the 1st Embodiment of this invention. It is an overall view of the freezing chamber with the freezing chamber duct cover and the cooler cover removed in the 1st Embodiment of this invention. (A)-(c) is a figure which showed the structure of the freezing chamber duct in 1st Embodiment of this invention. (A) and (b) are diagrams showing the structure of the damper used in the first embodiment of the present invention. (A) and (b) are diagrams showing the flow of cold air during cooling of the freezing chamber according to the first embodiment of the present invention. (A) and (b) are diagrams showing the flow of cold air during cooling of the refrigerating chamber according to the first embodiment of the present invention. It is a time chart of the operation control for making the refrigerating room high humidity in the 1st Embodiment of this invention. It is a figure which showed the cooling cycle suitable for use in the operation control for making a refrigerating room high humidity in 1st Embodiment of this invention. (A) and (b) are views of the freezing chamber duct wall according to the second embodiment of the present invention when viewed from the front. (A) and (b) are views of the freezing chamber duct wall according to the third embodiment of the present invention when viewed from the front.

[Outline of the present embodiment]
In the present embodiment, in a refrigerator that cools a first storage chamber and a second storage chamber having different temperature zones with one cooler, the cold air of the first storage chamber invades the second storage chamber. It suppresses the influence of the environment of the first storage chamber on the second storage chamber. For example, when the first storage room is a freezing room and the second storage room is a refrigerating room, it is possible to prevent the humidity in the refrigerating room from decreasing due to the intrusion of cold air from the freezing room into the refrigerating room. Humidity is set to a high humidity equal to or higher than the humidity in the refrigerator compartment of a refrigerator equipped with two or more coolers at low cost.

Specifically, it is provided with a duct structure that realizes cooling at an evaporation temperature suitable for each of the freezing chamber and the refrigerating chamber. That is, a cooling air passage dedicated to the freezing room and a cooling air passage dedicated to the refrigerating room are individually provided in one duct, and switching of these cooling air passages is controlled by one damper provided in the duct. It also controls cooling fans and dampers to optimize cooling switching between the freezer and refrigerator compartments.

Furthermore, the evaporation temperature is controlled by an expansion valve and a capillary tube. That is, the humidity in the refrigerating chamber is controlled by optimizing the evaporation temperature when cooling the refrigerating chamber.

[First Embodiment]
FIG. 1 is an overall view of the refrigerator 1 according to the 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, a partition 30, an upper cold air passage 40, a lower cold air passage 50, and a compressor 60 are provided. Since FIG. 1 is a view when the refrigerator 1 is viewed from the front, the freezing chamber duct cover 11 and the cooler cover 12 can be seen in the freezing chamber 10, and the refrigerating chamber 20 is refrigerated. The room duct cover 21 is visible. The partition 30 partitions the freezing chamber 10 and the refrigerating chamber 20. The upper cold air passage 40 is a cold air passage provided in the upper part of the partition 30, and the lower cold air passage 50 is a cold air passage provided in the lower part of the partition 30, but the details will be described in detail. The compressor 60 compresses the refrigerant and circulates the refrigerant in the refrigeration cycle.

FIG. 2 is an overall view of the freezing chamber 10 with the freezing chamber duct cover 11 and the cooler cover 12 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 room duct wall 13 is a wall surface provided in the freezing room duct. The damper 14 is an example of the switching means, and is provided in the freezing chamber duct to switch the air passage of the cold air blown by the cooling fan 15, but the details will be described later. The cooling fan 15 is a fan that blows the cold air generated by the cooler 16 into the refrigerator 1. The cooler 16 evaporates the refrigerant to generate cold air for cooling the inside of the refrigerator 1.

Further, although not shown, when the refrigerating chamber duct cover 21 is removed in FIG. 1, the refrigerating chamber duct exists. On the other hand, there is no cooler in the refrigerator compartment 20. That is, in the refrigerator 1 of FIG. 1, one cooler 16 cools the freezing chamber 10 and the refrigerating chamber 20.

3A to 3C are views showing the configuration of the freezing chamber duct according to the first embodiment.

FIG. 3A shows the freezing chamber duct cover 11. As shown in the figure, the freezing chamber duct cover 11 is provided with openings 111 to 113. Although three openings 111 to 113 are provided here, the number of openings is not limited to this.

FIG. 3B is a view when the freezing chamber duct wall 13 is viewed from the front, and FIG. 3C is a view when the freezing chamber duct wall 13 is viewed from the side surface. As shown by an arrow 101 in FIG. 3B, a freezing chamber cooling air passage 131 as an example of a first air passage used for cooling the freezing chamber 10 is provided on the front surface of the freezing chamber duct wall 13. Is formed. Further, as shown by an arrow 102 in FIG. 3 (c) and an arrow 103 in FIG. 3 (b), a second wind used for cooling the refrigerating chamber 20 is provided on the back surface of the freezing chamber duct wall 13. An air passage 132 for cooling the refrigerator compartment is formed as an example of the passage. Here, the freezing chamber cooling air passage 131 and the refrigerating chamber cooling air passage 132, which are two systems of air passages, are formed so as to be included in one air passage. Further, one side wall of the freezing room cooling air passage 131 and one side wall of the refrigerating room cooling air passage 132 form a common side wall 133. Further, the freezing room cooling air passage 131 and the refrigerating room cooling air passage 132 are individually formed by the partition 134. Furthermore, on the freezing chamber duct wall 13, a damper 14 for switching between the freezing chamber cooling air passage 131 and the refrigerating chamber cooling air passage 132, and a cooling fan 15 for blowing cold air are installed.

With such an air passage configuration, the space can be made more compact as compared with the case where the two air passages are completely separated. In addition, since the side wall is shared, cold air leakage can be suppressed, leading to a reduction in material costs.

Further, as described above, the two air passages are installed so that the refrigerating room cooling air passage 132 is on the outside of the freezing room cooling air passage 131 (on the side opposite to the freezing room duct cover 11). .. In other words, the freezing chamber cooling air passage 131 is installed on the side closer to the freezing chamber 10, and the refrigerating chamber cooling air passage 132 is installed on the side far from the freezing chamber 10.

4 (a) and 4 (b) are views showing the configuration of the damper 14. As shown in the figure, the damper 14 includes a freezing room cooling air passage opening 141 in the direction of the freezing room cooling air passage 131, and a refrigerating room cooling air passage opening 142 in the direction of the refrigerating room cooling air passage 132. , With an opening / closing plate 143. For example, as shown in FIG. 4A, when the opening / closing plate 143 is directed in the vertical direction, the freezing room cooling air passage opening 141 is fully opened, and the refrigerating room cooling air passage opening 142 is fully closed. Further, as shown in FIG. 4B, when the opening / closing plate 143 is directed in the horizontal direction, the freezing room cooling air passage opening 141 is fully closed, and the refrigerating room cooling air passage opening 142 is fully opened.

Alternatively, although not shown, both the freezing room cooling air passage 131 and the refrigerating room cooling air passage 132 are formed by half-opening either the freezing room cooling air passage opening 141 or the refrigerating room cooling air passage opening 142. It is also possible to blow cold air into the air.

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

FIGS. 5A and 5B show the flow of cold air during cooling of the freezing chamber 10.

In FIG. 5B, the cold air that has passed through the cooler 16 is sucked by the cooling fan 15 from the fan suction port on the back surface of the freezer duct wall 13 as shown by arrow 181 and is sucked by the cooling fan 15 as shown by arrow 182. , Is blown out in the direction of the damper 14.

In FIG. 5B, since the freezing chamber cooling air passage opening 141 is fully open (the refrigerating chamber cooling air passage opening 142 is fully closed) in the damper 14, the cold air is as shown by the arrow 183. It passes only through the freezer cooling air passage 131.

Then, in FIG. 5A, as shown by arrows 184 to 186, the cold air is blown out only into the freezing chamber 10 from the openings 111 to 113 provided in the freezing chamber duct cover 11, and only the freezing chamber 10 is cooled. Will be done. That is, no cold air is blown into the refrigerator compartment 20.

Further, since one side wall of the freezer compartment cooling air passage 131 and one side wall of the refrigerating chamber cooling air passage 132 are shared side walls 133 (see FIG. 3B), the freezer chamber 10 During cooling, heat transfer into the refrigerating chamber cooling air passage 132 via the common side wall 133 makes it possible to lower the air temperature, speeding up the cooling speed of the refrigerating chamber 20 during cooling, and contributing to energy saving. Will be done.

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

In FIG. 6A, the cold air that has passed through the cooler 16 is sucked by the cooling fan 15 from the fan suction port on the back surface of the freezer duct cover 11 as shown by arrow 191 and is sucked by the cooling fan 15 as shown by arrow 192. , Is blown out in the direction of the damper 14.

In FIGS. 6A and 6B, since the air passage opening 142 for cooling the refrigerator compartment is fully open (the air passage opening 141 for cooling the freezing chamber is fully closed) in the damper 14, the cold air is indicated by arrows 193. As shown in 194, it passes only through the air passage 132 for cooling the refrigerator compartment.

Then, in FIG. 6A, as shown by an arrow 195, the cold air is guided to the refrigerating chamber duct via the upper cold air passage 40, and the refrigerating chamber is provided through several openings provided in the refrigerating chamber duct cover 21. It is blown out only into the inside of 20, and only the refrigerating chamber 20 is cooled. That is, no cold air is blown into the freezing chamber 10.

During cooling of the refrigerating chamber 20, there is no intrusion of cold air in the cooling temperature zone of the freezing chamber 10 having a lower temperature and lower humidity, and a decrease in humidity in the refrigerating chamber 20 can be prevented.

Further, since the refrigerating chamber cooling air passage 132 is located outside the refrigerator compartment cooling air passage 131 (on the side opposite to the freezing chamber duct cover 11), the refrigerating chamber cooling air passage 132 is used during cooling of the refrigerating chamber 20. It is possible to prevent the cold air in the temperature zone higher than the cooling temperature zone of the freezing chamber 10 passing through directly from being transmitted directly to the freezing chamber duct cover 11, and to suppress the temperature rise in the freezing chamber 10 to save energy. Contribute to.

Next, the upper cold air passage 40 and the lower cold air passage 50 will be described with reference to FIG. 1 again.

As described above, the upper cold air passage 40 is used as a passage for guiding the cold air that has passed through the cooler 16 to the refrigerating chamber duct.

On the other hand, the lower cold air passage 50 is a passage used as a return air passage for returning the cold air used for cooling in the refrigerating chamber 20 to the cooler 16 installed in the freezing chamber 10.

A damper (not shown) as an example of the second switching means is provided inside the lower cold air passage 50, and the damper is opened during cooling of the refrigerating chamber 20 to serve as a return air passage. On the other hand, while the freezing chamber 10 is being cooled, the damper is closed so that the cold air between the freezing chamber 10 and the refrigerating chamber 20 does not come and go, and the low temperature and low humidity cold air in the freezing chamber 10 invades the refrigerating chamber 20. This can be prevented and the decrease in humidity in the refrigerating chamber 20 can be suppressed.

Hereinafter, operation control for increasing the humidity in the refrigerator compartment 20 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 chamber 20 decreases when the refrigerating chamber 20 is cooled, that is, when the damper 14 opens to the side of the refrigerating chamber 20, so that the humidity decreases when the refrigerating chamber 20 is cooled. It is necessary to suppress. Since the decrease in humidity during cooling of the refrigerating chamber 20 is mainly due to dehumidification due to the low temperature of the cooler 16, it is possible to raise the temperature of the cooler 16 during cooling of the refrigerating chamber 20. You will need it.

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 the control at the start of cooling of the refrigerating chamber 20. That is, before the air passage is switched at time t11 by the damper 14 shown in FIGS. 4A and 4B, the compressor 60 is stopped at time t1 and the cooling fan 15 is operated to operate the cooling chamber 20. Before sending the wind inward, the temperature of the cooler 16 is raised in advance. Here, the time t11 may be determined by the temperature of the cooler 16 or by the time from the stop of the compressor 60. For example, when it is determined that the temperature of the cooler 16 has exceeded a predetermined temperature, or when it is determined that a predetermined time has elapsed since the compressor 60 was stopped, the damper 14 is switched to enter the refrigerating chamber 20. Cooling should be started by sending air.

By the way, during the cooling of the refrigerating chamber 20, the air in the refrigerating chamber 20 circulates, so that the temperature of the cooler 16 rises, and eventually the temperature in the refrigerating chamber 20 may reach a temperature at which it cannot be cooled. Therefore, when the temperature in the refrigerator compartment 20 or the temperature of the cooler 16 becomes equal to or higher than a predetermined temperature, that is, when the downward gradient of the temperature in the refrigerator chamber 20 becomes equal to or lower than a predetermined gradient, the compressor By restarting 60, non-cooling is avoided. Alternatively, when it takes more than a predetermined time to cool the inside of the refrigerating chamber 20, the compressor 60 may be restarted to avoid non-cooling. In the time chart 73, the timing of restarting the compressor 60 is shown at time t12.

Further, in the same case, the cooling fan 15 may be stopped to avoid non-cooling. In the time chart 75, the timing of stopping the cooling fan 15 is shown at time t13. Then, in this case, at time t14, the cooling fan 15 is operated again to raise the temperature of the cooler 16. Here, the time t14 may be determined by the temperature of the cooler 16 or by the time from the stop of the cooling fan 15. For example, when it is determined that the temperature of the cooler 16 is equal to or higher than 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.

After that, when the temperature in the refrigerating chamber 20 reaches the target temperature at time t2, the cooling of the refrigerating chamber 20 is completed and the stop mode is set. In this stop mode, as shown in the time chart 75, the cooling fan 15 is continuously operated in order to raise the temperature of the cooler 16. 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.

Although not shown in the time chart of FIG. 7, since the refrigerator 1 periodically performs a defrosting operation for removing the frost adhering to the cooler 16, the damper 14 is used during the defrosting operation. It may be opened to the side of the refrigerator compartment 20 to operate the cooling fan 15. By doing so, the moisture generated by the defrosting can be sent into the refrigerating chamber 20, and the humidity in the refrigerating chamber 20 can be increased even in a process other than the cycle shown in FIG. Further, the cooling fan 15 is stopped when the value of the temperature sensor that detects the temperature of the cooler 16 or the refrigerating chamber 20 reaches a predetermined value, or a predetermined time elapses from the start of operation of the cooling fan 15. If this is the case, it is preferable that the temperature inside the refrigerating chamber 20 does not exceed a predetermined temperature.

FIG. 8 shows a cooling cycle suitable for use in operation control for increasing the humidity in the refrigerator compartment 20. As shown in the figure, this cooling cycle is configured by connecting a cooler 16, a compressor 60, a three-way switching valve 61, a condenser 62, a variable expansion valve 63, a capillary tube 64, and the like by piping. The cooling cycle also includes a bypass path 65.

That is, in this cooling cycle, an expansion mechanism having two or more different diameters is realized by the variable expansion valve 63. When the compressor 60 is restarted while the refrigerating chamber 20 is being cooled as described above, the temperature of the cooler 16 is lowered, which causes a decrease in the humidity in the refrigerating chamber 20. Therefore, only when the refrigerating chamber 20 is cooled, the variable expansion valve 63 changes the flow rate of the refrigerant to raise the temperature of the cooler 16 for cooling, thereby suppressing a decrease in the humidity of the refrigerating chamber 20.

Further, in this cooling cycle, as described above, a 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 switched by the three-way switching valve 61. When the cooling of the freezing chamber 10 and the refrigerating chamber 20 is completed, the temperature of the cooler 16 is raised to higher than 0 ° C. by flowing a high-temperature refrigerant through the bypass path 65 through the three-way switching valve 61 and operating the cooling fan 15. This makes it possible to raise the humidity in the refrigerator compartment 20 and remove the frost on the cooler 16. Further, the bypass path 65 is closed when the value of the temperature sensor that detects the temperature of the cooler 16 or the refrigerating chamber 20 reaches a predetermined value, and the temperature in the refrigerating chamber 20 becomes equal to or higher than the predetermined temperature. It is better not to become.

According to the present embodiment, in a refrigerator that cools a first storage chamber and a second storage chamber having different temperature zones with one cooler, the environment of the first storage chamber affects the second storage chamber. The effect can be suppressed at low cost.

[Second Embodiment]
Since the refrigerator 1 in the second embodiment is the same as that described in the first embodiment except for the inside of the freezing chamber duct, the description thereof will be omitted.

9 (a) and 9 (b) are views when the freezing chamber duct wall 83 in the second embodiment is viewed from the front. As shown by arrows 801 to 803 in FIG. 9A, a freezing room cooling air as an example of a first air passage used for cooling the freezing room 10 is provided on the front left side of the freezing room duct wall 83. Road 831 is formed. Further, as shown by arrows 804 to 806 in FIG. 9B, cooling of the refrigerating chamber as an example of a second air passage used for cooling the refrigerating chamber 20 on the front right side of the freezing chamber duct wall 83. The air passage 832 is formed. Further, as shown in FIGS. 9A and 9B, the freezing room cooling air passage 831 and the refrigerating room cooling air passage 832 are individually formed by the partition 834. Further, on the freezing chamber duct wall 83, a damper 84 as an example of switching means for switching between the freezing chamber cooling air passage 831 and the refrigerating chamber cooling air passage 832, and a cooling fan 15 for blowing cold air are installed. Here, the damper 84 has a drive unit 840, a freezing room cooling air passage opening 841, a refrigerating room cooling air passage opening 842, and an opening / closing plate 843,844, and has a freezing room cooling air passage opening 841. And the air passage opening 842 for cooling the refrigerator compartment can be opened and closed independently. For example, as shown in FIG. 9A, when the opening / closing plate 843 is tilted down and the opening / closing plate 844 is erected, the freezing chamber cooling air passage opening 841 is fully opened and the refrigerating chamber cooling air passage opening 842 is fully closed. .. Further, as shown in FIG. 9B, when the opening / closing plate 843 is erected and the opening / closing plate 844 is tilted down, the freezing chamber cooling air passage opening 841 is fully closed and the refrigerating chamber cooling air passage opening 842 is fully opened. ..

Then, by using such a damper 84, the freezing chamber cooling air passage 831 and the refrigerating chamber cooling air passage 832 are formed so as to be included in one air passage on the same plane. Thereby, in the second embodiment, the thickness of the entire freezing chamber duct can be reduced.

Further, even with such a configuration, if the freezing room cooling air passage 831 and the refrigerating room cooling air passage 832 are surely separated by the partition 834, the humidity becomes as high as that of the first embodiment. The effect is obtained.

Further, the operation control for increasing the humidity in the refrigerating chamber 20 described with reference to FIGS. 7 and 8 in the first embodiment can also be applied in the second embodiment.

[Third Embodiment]
Since the refrigerator 1 in the third embodiment is the same as that described in the first embodiment except for the inside of the freezing chamber duct, the description thereof will be omitted.

10 (a) and 10 (b) are views when the freezing chamber duct wall 93 in the third embodiment is viewed from the front. As shown by arrows 901 to 903 in FIG. 10A, a freezing room cooling air as an example of a first air passage used for cooling the freezing room 10 is provided on the front left side of the freezing room duct wall 93. Road 931 is formed. Further, as shown by arrows 904 to 906 in FIG. 10B, cooling of the refrigerating chamber as an example of a second air passage used for cooling the refrigerating chamber 20 on the front right side of the freezing chamber duct wall 93. The air passage 932 is formed. Further, as shown in FIGS. 10A and 10B, the freezing room cooling air passage 931 and the refrigerating room cooling air passage 932 are individually formed by the partition 934. Further, on the freezing chamber duct wall 93, a damper 94 as an example of switching means for switching between the freezing chamber cooling air passage 931 and the refrigerating chamber cooling air passage 932, and a cooling fan 15 for blowing cold air are installed. Here, the damper 94 has a drive unit 940, a freezing room cooling air passage opening 941, a refrigerating room cooling air passage opening 942, and an opening / closing plate 943, and has an internal angle of about 90 ° around the drive unit 940. The opening / closing plate 943 is installed so as to rotate within the fan-shaped range of. For example, as shown in FIG. 10A, when the opening / closing plate 943 is rotated to the rightmost side of the fan shape, the freezing room cooling air passage opening 941 is fully opened, and the refrigerating room cooling air passage opening 942 is fully closed. Become. Further, as shown in FIG. 10B, when the opening / closing plate 943 is rotated to the leftmost side of the fan shape, the freezing room cooling air passage opening 941 is fully closed, and the refrigerating room cooling air passage opening 942 is fully opened. Become.

By using such a damper 94, it is possible to obtain the same effect as that of the second embodiment, and it is also possible to obtain the same high humidity effect as that of the first embodiment. Is.

Further, the operation control for increasing the humidity in the refrigerating chamber 20 described with reference to FIGS. 7 and 8 in the first embodiment can also be applied in the third embodiment.

[Fourth Embodiment]
In the first to third embodiments, one of the two air passages that blow cold air to each of the freezing chamber and the refrigerating chamber is selected by switching control with a damper. Not exclusively. If it is possible to select one of the two air passages, for example, one valve having an opening / closing mechanism, a solenoid type opening / closing valve, or the like may be provided in each air passage. Even with such a configuration, the same effect as that of the first to third embodiments can be obtained.

Alternatively, in the first to third embodiments, one cooling fan 15 is provided, and the cold air blown by the cooling fan 15 is switched by a damper to control the switching of the two air passages to the freezing chamber and the refrigerating chamber. I tried to send it to either one, but it is not limited to this. Two cooling fans may be provided, and by controlling the on / off of these cooling fans, cold air may be sent to either one of the two air passages to the freezing chamber and the refrigerating chamber. Specifically, when a fan for the freezer compartment corresponding to the air passage to the freezer chamber and a fan for the refrigerator compartment corresponding to the air passage to the refrigerator compartment are provided and cold air is sent only to the air passage to the freezer compartment. Turn on the freezer fan and turn off the refrigerator fan, and when sending cold air only to the air passage to the refrigerator, turn off the freezer fan and turn on the refrigerator fan. Good. The freezing room fan and the refrigerating room fan in this case are examples of switching means.

1 ... Refrigerator, 10 ... Freezer room, 11 ... Freezer room duct cover, 111, 112, 113 ... Opening, 12 ... Cooler cover, 13, 83, 93 ... Freezer room duct wall, 131, 831, 931 ... Freezer room cooling Air ducts, 132,832,932 ... Refrigerator room cooling air ducts, 133 ... Shared side walls, 134,834,934 ... Partitions, 14,84,94 ... Dampers, 840,940 ... Drive units, 141,841,941 ... Freezer room cooling air duct opening, 142,842,942 ... Refrigerator room cooling air duct opening, 143,843,844,943 ... Open / close plate, 15 ... Cooling fan, 16 ... Cooler, 20 ... Refrigerator room, 21 ... Refrigerator duct cover, 30 ... Partition, 40 ... Upper cold air passage, 50 ... Lower cold air passage, 60 ... Compressor

Claims (13)

A compressor that compresses and circulates the refrigerant,
A cooler that generates cold air by circulating the refrigerant by the compressor, and
The first storage chamber, which is the storage chamber in the first temperature zone, and
A first air passage, which is an air passage to the first storage chamber, formed on the duct wall of the first storage chamber, and
A second storage chamber, which is a storage chamber in a second temperature zone different from the first temperature zone,
A second air passage, which is an air passage to the second storage chamber, formed on the duct wall,
A switching means for switching by one switching mechanism is provided so that the cold air generated by the cooler alternately flows into one of the first air passage and the second air passage.
A refrigerator characterized in that the first air passage and the second air passage are formed parallel to the front and rear of the duct wall and share the duct wall. The first temperature zone is a freezing temperature zone.
The refrigerator according to claim 1, wherein the second temperature zone is a refrigerating temperature zone. When the cold air generated by the cooler is switched by the switching means so as to flow into the first air passage, the cold air is transferred from the cooler chamber accommodating the cooler to the second storage chamber. When the switch is made so as not to invade and the cold air generated by the cooler is switched by the switching means so as to flow into the second air passage, the cooler is stored from the second storage chamber. The refrigerator according to claim 2, further comprising a second switching means for switching so that cold air enters the cooler chamber. Further equipped with a cooling fan for blowing the cold air generated by the cooler,
The refrigerator according to claim 2, wherein the switching means switches so that the cold air blown by the cooling fan alternately flows into one of the first air passage and the second air passage. After controlling the switching means so that the cold air blown by the cooling fan flows into the first air passage, the compressor is stopped and the cooling fan is operated, and then the cooling fan operates. The refrigerator according to claim 4, further comprising a control means for controlling the switching means so that the blown cold air flows into the second air passage. The control means controls the switching means so that the cold air blown by the cooling fan flows into the second air passage, and then the temperature of the second storage chamber or the temperature of the cooler is predetermined. The refrigerator according to claim 5, wherein the compressor is operated again when the temperature rises above the temperature or when it takes a predetermined time or more to cool the second storage chamber. The refrigerator according to claim 6, wherein the control means changes the flow rate of the refrigerant by switching the diameters of the expansion mechanisms having two or more different diameters when the compressor is operated again. The control means controls the switching means so that the cold air blown by the cooling fan flows into the second air passage, and then the temperature of the second storage chamber or the temperature of the cooler is predetermined. The refrigerator according to claim 5, wherein the cooling fan is stopped when the temperature exceeds the above temperature or when it takes a predetermined time or more to cool the second storage chamber. After stopping the cooling fan, the control means causes the cooling fan to be operated again when the temperature of the cooler reaches a predetermined temperature or when a predetermined time elapses. The refrigerator according to claim 8. The refrigerator according to claim 5, wherein the control means continuously operates the cooling fan even when the temperature of the second storage chamber reaches a target temperature. When carrying out the defrosting operation for removing the frost adhering to the cooler, the cooling fan is operated, and the switching means is used so that the cold air blown by the cooling fan flows into the second air passage. The refrigerator according to claim 4, further comprising a control means for controlling. The control means is characterized in that the cooling fan is stopped when the temperature of the cooler or the second storage chamber reaches a predetermined temperature or when a predetermined time has elapsed. The refrigerator according to claim 11. A compressor that compresses and circulates the refrigerant,
A cooler that generates cold air by circulating the refrigerant by the compressor, and
The first storage chamber, which is the storage chamber in the first temperature zone, and
A first air passage, which is an air passage to the first storage chamber, formed on the duct wall of the first storage chamber, and
A second storage chamber, which is a storage chamber in a second temperature zone different from the first temperature zone,
A second air passage, which is an air passage to the second storage chamber, formed on the duct wall,
A switching means for switching by one switching mechanism is provided so that the cold air generated by the cooler alternately flows into one of the first air passage and the second air passage.
A refrigerator characterized in that the first air passage and the second air passage are formed parallel to the left and right of a partition provided on one side of the duct wall and share the duct wall.

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