JPH11211319A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator with a switching chamber which eliminates local supercooling during the setting of temperature other than freezing in the switching chamber that enables switching between freezing and any temperature zone other than freezing. SOLUTION: A damper device control means 57 is provided to control the opening or the closing of a damper device 50 of a switching chamber which is adapted to deliver returned cool air of a cold storage compartment 27 and a low temperature chamber 35 to the switching chamber 29 based on a temperature detection means 55 of the switching chamber during the setting of temperature other than freezing of a switching means 47. In the setting of freezing, a delivery duct 49 of the switching chamber is set large enough to secure a freezing temperature. In the setting of the temperature other than the freezing, this eliminates local supercooling and uneven temperature thereby maintaining the temperature at a proper value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator having a switching room capable of switching between freezing and a temperature zone other than freezing.

[0002]

2. Description of the Related Art In recent years, in addition to the conventional freezer compartment and refrigerator compartment, the temperature can be switched to a low temperature range such as freezing, refrigeration, or partial freezing or chilled, which is an intermediate temperature between them, depending on the use of the user. Refrigerators with switching rooms have been considered. Representative examples thereof are shown in, for example, Japanese Utility Model Publication No. Hei 4-38214, which will be described below with reference to FIGS.

9 and 10, reference numeral 1 denotes an outer box 2, an inner box 3, and a heat insulating material 4 filled in a space between the outer box 2 and the inner box 3.
It is a refrigerator main body constituted by: Reference numerals 5 and 6 denote partition walls that partition the inside of the refrigerator up and down. Reference numeral 7 denotes a freezer compartment formed above the partition wall 5 and above the refrigerator body 1.
Reference numeral 8 denotes a refrigerator compartment formed below the partition wall 6 and below the refrigerator body 1. Reference numeral 9 denotes a switching room defined between the freezing room 7 and the refrigerating room 8 and sandwiched between partition walls 5 and 6.

[0004] Reference numeral 10 denotes a compressor of a refrigerating cycle, 11 denotes a cooler housed in the back of the freezing room 7, and 12 denotes a blower for forcibly blowing cool air cooled by the cooler 11 into the refrigerator. Reference numeral 13 denotes a duct for sending cool air into the switching chamber 9, and reference numeral 14 denotes a damper device provided at the outlet of the duct 13 for adjusting the amount of cool air required for the switching chamber 9. 15 is a temperature detecting means provided in the switching room 9;
Is a temperature detecting means provided in the freezing room 7, and 17 is a switching means for switching the temperature of the switching chamber 9.

Reference numeral 18 denotes a switching room temperature control device, reference numeral 19 denotes a switching circuit, reference numeral 20 denotes a drive circuit of the damper device 14, and reference numerals 22 and 22 denote comparison circuits for setting the switching room to refrigeration and low temperature, respectively. .

[0006] Regarding the refrigerator configured as described above,
The operation will be described. First, when the switching chamber 9 is refrigerated, the output of the comparison circuit 21 determined by comparing with the voltage according to the temperature detected by the temperature detecting means 15 and the switching means 1
The output of the switching circuit 19 is determined together with the output conducted through the contact dc of No. 7. The opening and closing of the damper device 14 is controlled by the drive circuit 20 according to this output, and cool air is introduced during the operation period of the compressor 10 and the blower 12 whose operation is controlled based on the output of the freezing room temperature detecting means 16. Thus, the switching chamber 9 is kept cooled to the refrigeration temperature.

Next, when the temperature of the switching chamber 9 is set to a low temperature, the output of the comparison circuit 22 determined by comparison with a voltage corresponding to the temperature detected by the temperature detecting means 15 and the contact db of the switching means 17 are provided. Switching circuit 1
9 are determined. The opening and closing of the damper device 14 is controlled by the drive circuit 20 according to this output, and cool air is introduced during the operation period of the compressor 10 and the blower 12 whose operation is controlled based on the output of the freezing room temperature detecting means 16. Thus, the switching chamber 9 is kept cooled at a low refrigeration temperature such as partial freezing or chilling.

Next, when the switching chamber 9 is frozen, the output conducted through the contact da of the switching means 17 becomes the output of the switching circuit 19 regardless of the output of the temperature detecting means 15. Therefore, a drive voltage is constantly applied to the drive circuit 20, the damper device 14 is forcibly opened, and the compressor 10 and the blower whose operation is controlled based on the output of the freezer compartment temperature detecting means 16 are controlled. Cold air is introduced during the operation period 12 and the switching room 9 is cooled to the freezing temperature.

[0009]

However, in the above configuration, the switching chamber 9 is controlled over a wide temperature range from freezing to refrigeration by one damper device. When the size of the device 14 is increased, there has been a problem that, when setting other than freezing, the temperature is uneven due to local overcooling and a short opening time of the damper device.

The switching room 9 has a longer distance from the blower 12 than the freezing room 7 and has a large ventilation resistance and heat absorption loss in the cooling path such as the duct 13 and the damper device 14. There was also a design problem that the freezing temperature would be higher.

An object of the present invention is to solve the above-mentioned problems and to provide a refrigerator capable of maintaining the temperature of the switching room efficiently and accurately in accordance with the setting.

[0012]

In order to solve the above-mentioned problems, a refrigerator according to the present invention has a discharge path for discharging cold air cooled by a cooler by a blower to a switching chamber when a setting of a switching means is freezing. If the setting of the switching means is other than refrigeration, a discharge path for discharging the return cold air of the refrigerating room and the low-temperature room close to each set temperature to the switching room is provided, and there is a large difference between the refrigeration setting and the set temperature Since the control at the time of setting other than the freezing is performed by the independent discharge path and the control, when the setting of the switching means is the freezing, the sectional area of the discharge path to the switching chamber is sufficiently secured. Thereby, the ventilation resistance and the heat absorption loss can be reduced, and the temperature can be cooled and maintained at the freezing room temperature without excess or shortage. Therefore, it is possible to cope with the design problem that the switching room has a long distance from the blower as compared with the freezing room, so that a large cooling loss occurs in the cooling path.

When the setting of the switching means is other than freezing, the return cold air in the refrigerating room and the low-temperature room at a temperature close to the set temperature at the time of setting other than freezing, such as refrigeration or low temperature, is discharged and cooled. It is possible to maintain each set temperature with high accuracy without the switching room being locally supercooled or causing temperature unevenness.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In recent years, refrigerators used in ordinary households have been equipped with a conventional freezing room, a refrigerator room, and a dedicated room for each use such as a low-temperature room and a vegetable room. A refrigerator equipped with a switching room for switching to a low temperature zone such as partial freezing, chilling or the like, which is an intermediate temperature between them, has been conceived.

However, the temperature range to be varied is wide from -18 ° C. of the freezing temperature to 4 ° C. of the refrigeration temperature, and if it is intended to control this with one damper device, the duct and the damper device are enlarged to increase the cooling capacity. The temperature must be increased, and as a result, when used in a temperature range other than freezing, temperature unevenness occurs because the opening time of the damper device is short during local supercooling or temperature adjustment.

The present invention is constructed and implemented as described in the claims, thereby eliminating local overcooling and uneven temperature, and cooling and maintaining each set temperature accurately and efficiently. This is to realize a switching room that can perform the switching. In addition, the configuration described in each claim is the capacity of the refrigerator,
It can be applied regardless of the purpose and type.

That is, as described in claim 1 of the present invention, a freezing room, a refrigerator room, a low-temperature room for storing fish and meat at a low temperature, a switching room capable of switching room temperature, and a switching room. Temperature detecting means provided, switching means for switching the room temperature of the switching chamber between freezing and temperature zones other than freezing, a compressor of a refrigerating cycle, a cooler, and a blower for forcibly blowing cool air cooled by the cooler. A discharge duct that discharges air from the blower to the switching chamber, a manual opening / closing device that is provided in the discharge duct, and that is fully opened when the switching means is freezing and fully closed when not being frozen, And a suction duct for the low-temperature chamber; a damper device provided in the suction duct, for discharging a part of the return cold air from the refrigerating chamber and the low-temperature chamber to the switching chamber; If is other than refrigeration, based on the temperature detected in the temperature detecting means of the switching chamber, it is constructed by a control means for opening and closing controls the damper device.

Each of the freezing room, the refrigerating room, and the low-temperature room has a discharge duct and a suction duct, and cool air cooled by a cooler is supplied by a blower.
The refrigerating room is maintained at a predetermined temperature such as 4 ° C., and the low temperature room is maintained at a predetermined temperature such as −3 ° C.

In order to use the switching room efficiently and accurately in a low temperature range such as partial freezing (-3.degree. C.) and chilled (0.degree. C.) in addition to freezing and refrigeration, the set temperature is large. The system is configured so as to be controlled separately for different freezing and other than freezing.

That is, when refrigeration is selected by the switching means, the manual opening / closing device is fully opened in conjunction therewith, and the cool air cooled by the cooler is discharged to the switching chamber by the discharge duct of the switching chamber, and the suction duct of the switching chamber. And the switch room is maintained at a suitable temperature such as -18 ° C. In addition, when a mode other than refrigeration is selected by the switching means, the manual opening / closing device is interlocked and fully closed, and the temperature of the switching chamber is detected by the temperature detecting means,
If the temperature is higher than the set temperature of each mode other than the freezing mode, the control means of the damper device switches the cold air returned from the suction duct of the refrigerator compartment and the low-temperature chamber at a temperature close to the set temperature zone other than the freezing mode and discharges the cold air into the room. The device opens and cools the switching room. Thereafter, based on the temperature of the switching chamber detected by the temperature detecting means, by controlling the control means to open and close the damper device to maintain the switching chamber temperature at a predetermined temperature in the set mode,
When the setting of the switching means is other than freezing, the return cold air of the refrigerating room and the low-temperature room having a temperature close to the set temperature zone is discharged, so that partial supercooling and temperature unevenness do not occur,
Cooling and maintenance can be performed accurately.

Also, when the refrigeration setting is made, the switching room is located farther from the blower than the refrigeration room, so that the ventilation resistance and heat absorption loss of the cooling path become large and the temperature becomes higher than the refrigeration temperature. The cross-sectional area of the ventilation passage at the time of refrigeration setting, such as the discharge duct of the switching room that discharges the cool air cooled by the cooler to the switching room, because cooling at the time of cooling and cooling at the time of setting other than refrigeration are performed by independent cooling paths. Is increased according to the required amount, so that a sufficient freezing temperature can be obtained as in the freezing room. In this case, there is no influence on the cooling path at the time of setting other than freezing, and no local overcooling or temperature unevenness occurs at the time of setting other than freezing.

According to a second aspect of the present invention, a part of the cold air discharged to the refrigerator compartment is configured to be branched into the cold air discharge duct of the refrigerator compartment and discharged to the switching room.
In a case where the setting of the switching means according to claim 1 is a setting other than freezing, the switching room is cooled by adding a part of the cool air going from the cooler to the refrigerating room to a part of the return cold air of the refrigerating room and the low temperature room. Therefore, the cooling capacity of the switching room is improved, and the cooling can be stably performed regardless of the temperatures of the refrigerating room and the low-temperature room.

[0023] According to a third aspect of the present invention, there is provided a freezing room,
A refrigerating room, a low-temperature room for storing fish and meat at a low temperature, a switching room capable of switching between room temperatures, a temperature detecting means provided in the switching room, and a room temperature range for freezing and freezing other than freezing. Switching means for switching, a compressor of a refrigeration cycle, a cooler, a blower for forcibly ventilating the cool air cooled by the cooler, a discharge duct for discharging from the blower to the switching chamber, and a discharge duct. A first damper device provided, a suction duct for the refrigerator compartment and the low-temperature compartment, and provided in the suction duct;
A second damper device for discharging a part of the return cold air from the refrigerating room and the low-temperature room to the switching room, and a temperature detected by the temperature detecting means of the switching room; The first damper device is provided with control means for controlling the opening and closing of the second damper device in cases other than refrigeration, so that when the setting of the switching means is a refrigeration setting, the temperature detection means detects the temperature. The control means controls the first damper device to open and close the cold air cooled by the cooler discharged from the discharge duct of the switching room based on the temperature of the switching room to be cooled and maintained at the freezing temperature with high accuracy. If the setting of the switching means is other than refrigeration, the suction ducts of the refrigerating room and the low-temperature room are based on the temperature of the switching room detected by the temperature detecting means. The control means controls the opening and closing of the second damper device provided in the refrigeration room other than the refrigeration and the cold air returned from the refrigeration room and the low temperature room at a temperature close to the set temperature such as refrigeration or low temperature through the suction duct of the refrigeration room and the low temperature room. After that, the liquid is discharged to the switching chamber, so that it is possible to efficiently and accurately cool and maintain each set temperature. In the case of setting other than freezing, since the cold air in the refrigerating room and the low-temperature room near the set temperature is discharged to the switching room for cooling, local overcooling and temperature unevenness do not occur.

Further, in the case of the refrigeration setting, the distance from the blower of the switching room is longer than that of the freezing room, and the cooling passage has a large ventilation resistance and a large heat absorption loss. For example, it is possible to solve the problem by increasing the cross-sectional area of the cooling path by a necessary amount to secure the refrigeration temperature. In this case, since the discharge path of the discharge duct and the first damper device at the time of the freezing setting is independent of the discharge path at the time of the setting other than the freezing, local overcooling and temperature unevenness occur at the time of the setting other than the freezing. I won't let you.

Further, as set forth in claim 4, when the setting of the switching means is other than freezing, the control means for controlling the opening and closing of the first damper device when the temperature detecting means of the switching chamber detects a predetermined temperature or higher. With the configuration provided, even when the setting of the switching unit is other than the refrigeration setting, when the temperature detecting unit detects a predetermined temperature higher than the set temperature, the first damper device operates. ,
Cooling air cooled by the cooler is discharged to the switching room, and the cooling speed is increased, so that the temperature of the switching room is not affected by a sudden rise in temperature due to the loading of the switching room and regardless of the temperature of the refrigerator compartment and the low-temperature room. Can be cooled to an appropriate temperature and quickly. In this case, by setting the predetermined temperature to a temperature higher than the set temperature by a required value, local overcooling and uneven temperature due to discharging the cool air cooled by the cooler do not occur.

According to a fifth aspect of the present invention, there is provided a structure comprising a quenching switch which is operated when the switching means is other than the refrigeration setting, and a control means which controls opening and closing of the first damper device when the quenching switch is turned on. Thus, even when the setting of the switching means is other than the refrigeration setting, the first damper device is opened by turning on the quenching switch, and the cool air cooled by the cooler is discharged to the switching chamber, and the cooling speed is increased. In other words, it is possible to quickly cool to each set temperature. Further, by making the temperature at which the quenching switch is turned off higher than each set temperature other than the refrigeration setting by a required value, it is possible to prevent the occurrence of partial overcooling and uneven temperature.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a refrigerator according to the present invention will be described below with reference to the drawings. In each embodiment, the same reference numerals are given to the same components, and the detailed description is omitted.

(Embodiment 1) FIG. 1 is a front perspective view and a control block diagram of a refrigerator in Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view of the refrigerator in Examples 1, 2, 3, 4, and 5 of the present invention.

1 and 2, reference numeral 23 denotes a refrigerator main body. Reference numerals 24, 25, and 26 denote partition walls that partition the inside of the refrigerator up and down. Reference numeral 27 denotes a refrigerator compartment formed above the partition wall 24 and above the refrigerator main body 23, and has a door 28. Reference numeral 29 denotes a switching room formed between the partition wall 24 and the partition wall 25 and provided with a door 30. In addition to "freezing" and "refrigeration", "freezing", "partial freezing (-3 ° C), chilled (0 ° C), etc. The temperature can be arbitrarily switched to a "low temperature" temperature zone. Reference numeral 31 denotes a freezer compartment formed between the partition wall 25 and the partition wall 26, and includes a door 32. 3
Reference numeral 3 denotes a vegetable compartment formed below the partition wall 26 and below the refrigerator main body 23 and has a drawer-type door 34. Reference numeral 35 denotes a low-temperature chamber provided at the lower part of the refrigerator compartment 27 for storing mainly fish and meat.

Reference numeral 36 denotes a refrigerating cycle compressor provided at the bottom of the refrigerator main body 23, 37 denotes a cooler, and 38 denotes a cooler 3
This is a blower for forcing the cool air cooled in 7 into the refrigerator. Reference numeral 39 denotes a refrigerating room damper device for feeding a required amount of cold air to the refrigerating room 27, and reference numeral 40 denotes a low temperature room damper device for feeding a required amount of cold air to the low temperature room 35.

Reference numeral 41 denotes a freezing compartment discharge duct, one end of which is open near the cooler 37 and the other end of which is open to the freezing room 31. Reference numeral 42 denotes a freezer suction duct, one end of which is open to the freezer 31 and the other end of which is open near the lower part of the cooler 37. Reference numeral 43 denotes a refrigerating room discharge duct, one end of which opens to the vicinity of the cooler 37 via a damper device 39 for the refrigerating room, and the other end opens to the refrigerating room 27. Reference numeral 44 denotes a refrigerating room suction duct, one end of which is open to the refrigerating room 27, and the other end communicating with the vicinity of a lower portion of the cooler 37. Reference numeral 45 denotes a low-temperature chamber discharge duct, one end of which is opened near the cooler 37 via the low-temperature chamber damper device 40, and the other end of which is open to the low-temperature chamber 35. Reference numeral 46 denotes a low-temperature room suction duct, which communicates with the refrigerator room suction duct 44. Reference numeral 47 denotes switching means for switching the switching chamber 29 between "freezing", "refrigeration", and "low temperature (partial freezing, chilled, etc.)". Reference numeral 48 denotes a manual opening / closing device which is linked with the switching means 47 and is fully opened when the refrigeration is set, and is completely closed when not set.

Reference numeral 49 denotes the switching room 2 when the switching room is frozen.
9, one end of which is open to the vicinity of the cooler 37 via the manual opening / closing device 48, and the other end thereof is the switching chamber 29.
It is open to. Reference numeral 50 is a damper device for the switching room, which is provided in the middle of the refrigerating room suction duct 44 and for sending the required amount of cool air into the switching room 29 when the switching room 29 is not in the freezing setting. Reference numeral 51 denotes a discharge duct of the switching room when the switching room 29 is not in the refrigeration setting. One end communicates with the refrigerator room suction duct 44 and the low temperature room suction duct 46 via the switching room damper device 50, and the other end is switched. It is open to the chamber 29. 52 is a suction duct of the switching room,
It communicates with the low temperature chamber suction duct 46. 53 is a vegetable room discharge duct, one end of which is a damper device 39 for the refrigerator compartment.
And the other end is open to the vegetable compartment 33. Numeral 54 denotes a vegetable compartment suction duct, one end of which opens into the vegetable compartment 33 and the other end opens near the lower part of the cooler 37. 55
Is a temperature detecting means provided in the switching chamber 29. Reference numeral 56 denotes an indoor temperature determining means for determining whether the indoor temperature detected by the temperature detecting means 55 is within the range of the set temperature selected by the switching means 47. Reference numeral 57 denotes damper device control means for instructing opening and closing of the damper device 50 in the switching room based on the output of the room temperature determination means 56.

With respect to the refrigerator configured as described above,
The operation will be described below. The cool air cooled by the cooler 37 is discharged by the blower 38 to the freezer compartment 31 via the freezer compartment discharge duct 41, and returns to the cooler 37 from the freezer suction duct 42. Maintain the appropriate temperature. Further, the refrigerant is discharged from the refrigerator compartment discharge duct 43 to the refrigerator compartment 27 via the refrigerator compartment damper device 39, and returns to the cooler 37 via the refrigerator compartment suction duct 44.
The refrigerator compartment 27 is maintained at an appropriate temperature such as 4 ° C. At this time, part of the cool air that has passed through the damper device 39 in the refrigerator compartment is discharged to the vegetable compartment 33 via the vegetable compartment discharge duct 53, and returns to the cooler 37 via the vegetable compartment suction duct 54, where the vegetables are cooled. The chamber 33 is maintained at an appropriate temperature such as 6 ° C. In addition, cooler 3
The cool air cooled in 7 is discharged from the low-temperature chamber discharge duct 45 to the low-temperature chamber 35 by the blower 38, and returns to the cooler 37 through the low-temperature chamber suction duct 46, so that the low-temperature chamber 35 has an appropriate temperature such as -3 ° C. Will be maintained. Switching means 47
If “freezing” is selected, the manual opening / closing device 4
8, the cool air cooled by the cooler 37 is discharged from the discharge duct 49 of the switch room to the switch room 29, and is returned to the cooler 37 via the suction duct 52 of the switch room to switch. The chamber 29 is maintained at a set temperature such as -18C. When a mode other than “freezing” is selected by the switching unit 47, the manual opening / closing device 48 is interlocked and fully closed, and the temperature of the switching room is detected by the temperature detecting unit 55, and the indoor temperature determining unit 56 is It is determined whether the temperature is higher or lower than the ON / OFF set temperature other than “freezing”. That is, if the room temperature is higher than the ON set temperature, the damper device control means 57 opens the damper device 50 in the switching room. On the other hand, if the room temperature is lower than the OFF set temperature, the damper device 50 in the switching room is not opened. That is, a part of the returned cool air of the refrigerating room 27 and the low-temperature room 35 is discharged from the discharge duct 51 of the switching room.
Is discharged to the switching chamber 29 via the suction chamber 52 and returned to the cooler 37 through the suction duct 52 of the switching chamber, and the switching chamber 29 is maintained at an appropriate temperature such as refrigeration (4 ° C.) and chilled (0 ° C.).

As described above, when the selection of the switching means 47 is set other than "freezing", the refrigerator compartment 27 and the low-temperature compartment 35
Partial sub-cooling in settings other than "freezing" that can be achieved by a large damper device or duct designed to sufficiently cool the switching room 29 to "freezing" by discharging the returning cool air from the switching room 29 to the switching room 29 In addition, temperature unevenness caused by shortening the opening time of the damper device is eliminated, and the set temperature can be accurately maintained.

Also, even when "freezing" is set, the switching room 29 has a longer distance from the blower 38 than the freezing room 31, so that the ventilation resistance and heat absorption loss of the cooling path are large, and the switching room 29 is higher than the temperature of the freezing room. In order to solve the problem described above, it is possible to secure a predetermined refrigeration temperature by increasing the sectional area of the cooling path in order to secure the refrigeration temperature.

(Embodiment 2) FIG. 2 shows Embodiment 1 of the present invention.
It is sectional drawing of the refrigerator in 2,3,4,5. FIG.
FIG. 4 is a front perspective view and a control block diagram of a refrigerator in Embodiment 2 of the present invention.

2 and 3, reference numeral 58 denotes a refrigeration branch bypass duct provided in the middle of a cold air discharge path to the refrigeration room 27. One end communicates with the refrigeration room discharge duct 43, and the other end has a discharge duct for the switching room. It communicates with 51.

With respect to the refrigerator configured as described above,
The operation and action will be described below. The cool air cooled by the cooler 37 is discharged to the freezing room 31 through the freezing room discharge duct 41 by the blower 38, and the freezing room suction duct 42
After returning to the cooler 37, the freezing compartment 31 is maintained at an appropriate temperature such as -18 ° C. Further, the refrigerating chamber is discharged from the refrigerating chamber discharge duct 43 to the refrigerating chamber 27 via the refrigerating chamber discharge duct 43 via the refrigerating chamber discharge duct 43, and is returned to the cooler 37 via the refrigerating chamber suction duct 44. Will be maintained. At this time, part of the cool air that has passed through the damper device 39 of the refrigerator compartment is discharged to the vegetable compartment 33 through the vegetable compartment discharge duct 53,
The vegetable room 33 is returned to the cooler 37 through the vegetable room suction duct 54, and the vegetable room 33 is maintained at an appropriate temperature such as 6 ° C. Also,
The cool air cooled by the cooler 37 is discharged from the low-temperature chamber discharge duct 45 to the low-temperature chamber 35 by the blower 38, and returns to the cooler 37 via the low-temperature chamber suction duct 46. Maintain the appropriate temperature. When “freezing” is selected by the switching unit 47, the manual opening / closing device 48 is interlocked and fully opened, and the cool air cooled by the cooler 37 is discharged from the discharge duct 49 of the switching room to the switching room 29. The return to the cooler 37 via the suction duct 52 of the switching room, the switching room 29
It is maintained at a set temperature such as ° C. Switching means 47
Is selected, the manual opening / closing device 48 is interlocked and fully closed.
5, the temperature of the switching room 29 is detected, and the room temperature determining means 56 determines whether the ON / OFF setting temperature other than “freezing” is higher or lower, and opens and closes the damper device 50 in the switching room. That is, a part of the returned cool air from the refrigerating room 27 and the low-temperature room 35 is discharged to the discharge duct 51 of the switching room. Part of the cool air that has passed through the damper device 39 in the refrigerator compartment flows into the refrigeration branch bypass duct 58, and is guided to the discharge duct 51 in the switching room without passing through the refrigerator compartment 27. For this reason, in the discharge duct 51 of the switching room, a part of the discharge cold air to the refrigerating room 27 is mixed with the return cold air of the refrigerating room 27 and the low temperature room 35 having relatively high temperatures,
It becomes cold air with high cooling capacity. Then, the cool air discharged into the switching room 29 returns to the cooler 37 via the suction duct 52 of the switching room, and the switching room 29 is maintained at a set temperature such as refrigeration (4 ° C.) and chilled (0 ° C.). Is done.

As described above, a part of the cool air discharged to the refrigerator compartment 27 is discharged to the switching chamber 29, so that when the switching means 47 is set to a setting other than "freezing", the cooling capacity is increased, and Can be cooled more sufficiently.
Therefore, regardless of the temperatures of the refrigerator compartment 27 and the low-temperature compartment 35, the cooling can be performed stably.

(Embodiment 3) FIG. 2 shows Embodiment 1 of the present invention.
It is sectional drawing of the refrigerator in 2,3,4,5. FIG.
FIG. 7 is a front perspective view and a control block diagram of a refrigerator in Embodiment 3 of the present invention.

2 and 4, reference numeral 59 denotes the switching room 2
Switching means for switching 9 to "freezing", "refrigeration", "low temperature (partial freezing, chilled, etc.)". Reference numeral 60 denotes a damper device of the switching room for sending the necessary cool air into the switching room 29 when the switching means 59 is set to the freezing state. Reference numeral 61 denotes a discharge duct of the switching room when the switching room 29 is set to the freezing state, and one end is opened near the cooler 37 through a damper device 60 of the switching room,
The other end is open to the switching chamber 29. 62 is a temperature detecting means provided in the switching chamber 29. 63 is an indoor temperature determining means for determining whether or not the indoor temperature detected by the temperature detecting means 62 is within the range of the set temperature selected by the switching means 59. Reference numeral 64 denotes damper device control means for instructing opening and closing of the damper devices 50 and 60 in the switching room based on the output of the room temperature determining means 63.

With respect to the refrigerator configured as described above,
The operation and action will be described below. The cool air cooled by the cooler 37 is discharged to the freezing room 31 through the freezing room discharge duct 41 by the blower 38, and the freezing room suction duct 42
After returning to the cooler 37, the freezing compartment 31 is maintained at an appropriate temperature such as -18 ° C. Further, the refrigerating chamber is discharged from the refrigerating chamber discharge duct 43 to the refrigerating chamber 27 via the refrigerating chamber discharge duct 43 via the refrigerating chamber discharge duct 43, and is returned to the cooler 37 via the refrigerating chamber suction duct 44. Will be maintained. At this time, part of the cool air that has passed through the damper device 39 of the refrigerator compartment is discharged to the vegetable compartment 33 through the vegetable compartment discharge duct 53,
The vegetable room 33 is returned to the cooler 37 through the vegetable room suction duct 54, and the vegetable room 33 is maintained at an appropriate temperature such as 6 ° C. Also,
The cool air cooled by the cooler 37 is discharged from the low-temperature chamber discharge duct 45 to the low-temperature chamber 35 by the blower 38, and returns to the cooler 37 via the low-temperature chamber suction duct 46. Maintain the appropriate temperature. When “freezing” is selected by the switching means 59, the temperature of the switching room 29 is detected by the temperature detecting means 62, and the indoor temperature determining means 63 is higher than the ON / OFF set temperature of “freezing”. Judge whether it is low or low. That is, if the room temperature is higher than the set ON temperature, the damper device control means 64
Thereby, the damper device 60 in the switching room is opened. On the other hand, if the room temperature is lower than the set off temperature, the damper device 60 in the switching room is not opened. That is, the cool air cooled by the cooler 37 is discharged to the switching room 29 by the blower 38 through the discharge duct 61 of the switching room,
The switching chamber 29 is returned to the cooler 37 from the suction duct 52 of the switching chamber, and the switching chamber 29 is maintained at a set temperature such as -18 ° C. When a mode other than “freezing” is selected by the switching unit 59, the damper device 60 in the switching room is fully closed, and the temperature detecting unit 62 detects the temperature of the switching room 29, and the indoor temperature determining unit 63 "frozen"
It is determined whether the temperature is high or low with respect to the ON / OFF set temperatures of the other modes. That is, if the room temperature is higher than the set ON temperature, the damper device control means 64 opens the damper device 50 in the switching room. On the other hand, if the room temperature is lower than the OFF set temperature, the damper device 50 in the switching room is not opened. That is, a part of the returned cool air of the refrigerating room 27 and the low-temperature room 35 is discharged from the discharge duct 51 of the switching room.
Is returned to the cooler 37 through the suction duct 52 of the switching room, and the switching room 29 is refrigerated (4
° C) and chilled (0 ° C).

As described above, when the selection of the switching means 59 is set other than "freezing", the return cold air of the refrigeration chamber 27 and the low-temperature chamber 35 whose temperature is close to the refrigeration other than "freezing" or the low temperature set temperature is switched to the switching chamber 29. Discharge, the partial supercooling at the time of setting other than "freezing" and the opening time of the damper device are shortened by the large damper device and the duct designed to cool the switching chamber 29 to "freezing". As a result, unevenness in temperature can be eliminated and the set temperature can be accurately maintained. At the same time, the thermal efficiency can be increased.

Even when the selection of the switching means 59 is set to "freezing", the switching room 29 has a longer distance from the blower 38 than the freezing room 31, and the ventilation resistance and heat absorption loss of the cooling path are increased. With respect to the problem that the temperature is higher than the freezing temperature, a predetermined freezing temperature can be ensured by increasing the cross-sectional area of the discharge cooling path necessary for securing the freezing temperature, and the damper devices 50 and 60 of the switching room are provided.
Is provided, the switching chamber 29 can be maintained more finely and accurately at an appropriate temperature.

(Embodiment 4) FIG. 2 shows Embodiment 1 of the present invention.
It is sectional drawing of the refrigerator in 2,3,4,5. FIG.
FIG. 9 is a front perspective view and a control block diagram of a refrigerator according to a fourth embodiment of the present invention. FIG. 6 is an operation flowchart of the refrigerator.

2 and 5, reference numeral 65 denotes an indoor temperature judging means for judging whether or not the room temperature detected by the temperature detecting means 62 is within the range of the set temperature selected by the switching means 59. Reference numeral 66 denotes damper device control means for instructing opening and closing of the damper devices 50 and 60 in the switching room based on the output of the room temperature determining means 65.

Regarding the refrigerator configured as described above,
The operation and action will be described below. Switching room 29
Will be described with reference to FIG.

The cool air cooled by the cooler 37 is supplied to a blower 38
As a result, the refrigerant is discharged into the freezer compartment 31 via the freezer compartment discharge duct 41, returns to the cooler 37 from the freezer compartment suction duct 42, and is maintained at an appropriate temperature such as -18 ° C.
Further, the refrigerating chamber is discharged from the refrigerating chamber discharge duct 43 to the refrigerating chamber 27 via the refrigerating chamber discharge duct 43 via the refrigerating chamber discharge duct 43, and is returned to the cooler 37 via the refrigerating chamber suction duct 44. Will be maintained. At this time, part of the cool air that has passed through the damper device 39 in the refrigerator compartment is discharged into the vegetable compartment discharge duct 53.
And is returned to the cooler 37 through the vegetable room suction duct 54, and the vegetable room 33
It is maintained at an appropriate temperature such as ° C. The cool air cooled by the cooler 37 is discharged from the low-temperature chamber discharge duct 45 to the low-temperature chamber 35 by the blower 38, and returns to the cooler 37 via the low-temperature chamber suction duct 46, so that the low-temperature chamber 35 becomes -3 ° C. Etc. are maintained at an appropriate temperature. If the setting of the switching means 59 is determined to be "freezing" (Step 1), the temperature detecting means 62
To detect the temperature of the switching room 29 (Step 2),
The indoor temperature determining means 65 determines whether the temperature is higher or lower than the ON / OFF setting temperature of “freezing” (Step 3). That is, if the room temperature is higher than the ON set temperature, the damper device control means 66 controls the damper device 6 in the switching room.
0 is released (Step 4). On the other hand, if the room temperature is lower than the OFF set temperature, the damper device 60 of the switching room
Is not released. That is, the required amount of the cool air cooled by the cooler 37 is discharged by the blower 38 to the switching room 29 through the discharge duct 61 of the switching room, and is returned to the cooler 37 from the suction duct 52 of the switching room to switch. The chamber 29 is maintained at a set temperature such as -18C. If the setting of the switching means 59 is determined to be other than "freezing" (Step 1), the temperature of the switching chamber 29 is detected by the temperature detecting means 62 (Step 5), and the room temperature determining means 65 is turned on other than "freezing". On / off set temperature
It is determined whether the temperature is higher or lower than the ON temperature (Step 6).
If the temperature is higher than the ON temperature, it is next determined whether the predetermined temperature Δt ° C. is higher or lower than the ON set temperature (St).
ep7). Then, the room temperature is Δt ° C. lower than the set ON temperature.
If it is not higher, the damper device control means 66 opens the damper device 50 in the switching room (Step 8).
That is, a part of the return cold air of the refrigerating room 27 and the low-temperature room 35 is transferred to the switching room 2 through the discharge duct 51 of the switching room.
9 and is returned to the cooler 37 through the suction duct 52 of the switching room, and the switching room 29 is refrigerated (4
° C) and chilled (0 ° C). If the room temperature is higher than the ON set temperature by Δt ° C., the damper device control means 66 opens the damper device 60 in the switching room (Step 9). That is, when the room temperature is higher than the ON set temperature by Δt ° C., the cool air cooled by the cooler 37 is discharged into the switching room 29 via the discharge duct 61 of the switching room.

As described above, at the time of setting other than "freezing", food having a high temperature is thrown in, or the refrigerator 27 and the low-temperature
In the case where the return cooling air of 5 has a low cooling capacity, the cold air cooled by the cooler 37 is discharged to the switching room 29, so that it is possible to quickly respond to a rapid rise in the temperature of the switching room 29. Also, the temperature of the low-temperature chamber 35 is hardly affected, and the set temperature can be stably maintained.

(Embodiment 5) FIG. 2 shows Embodiment 1 of the present invention.
It is sectional drawing of the refrigerator in 2,3,4,5. FIG.
FIG. 9 is a front perspective view and a control block diagram of a refrigerator in a fifth embodiment of the present invention. FIG. 8 is an operation flowchart of the refrigerator.

In FIGS. 2 and 7, reference numeral 67 denotes a quenching switch which is operated at the time of setting other than "freezing". Reference numeral 68 denotes a room for determining whether the room temperature of the switching room 29 detected by the temperature detecting means 62 is within the set temperature range selected by the switching means 59 or within the temperature range of the rapid cooling mode in which the rapid cooling switch 67 operates. It is a temperature determining means. 69
Numeral denotes damper device control means for instructing opening and closing of the damper devices 50 and 60 in the switching room based on the output of the room temperature determining means 68.

With respect to the refrigerator configured as described above,
The operation and action will be described below. Switching room 29
Will be described with reference to FIG.

The cool air cooled by the cooler 37 is supplied to a blower 38
As a result, the refrigerant is discharged into the freezer compartment 31 via the freezer compartment discharge duct 41, returns to the cooler 37 from the freezer compartment suction duct 42, and is maintained at an appropriate temperature such as -18 ° C.
Further, the refrigerating chamber is discharged from the refrigerating chamber discharge duct 43 to the refrigerating chamber 27 via the refrigerating chamber discharge duct 43 via the refrigerating chamber discharge duct 43, and is returned to the cooler 37 via the refrigerating chamber suction duct 44. Will be maintained. At this time, part of the cool air that has passed through the damper device 39 in the refrigerator compartment is discharged into the vegetable compartment discharge duct 53.
And is returned to the cooler 37 through the vegetable room suction duct 54, and the vegetable room 33
It is maintained at an appropriate temperature such as ° C. The cool air cooled by the cooler 37 is discharged from the low-temperature chamber discharge duct 45 to the low-temperature chamber 35 by the blower 38, and returns to the cooler 37 through the low-temperature chamber suction duct 46, so that the refrigeration chamber 27 has a temperature of -3 ° C. Etc. are maintained at an appropriate temperature. If the setting of the switching means 59 is determined to be "freezing" (Step 10), the temperature detecting means 6
2 to detect the temperature of the switching chamber 29 (Step 1).
1), the room temperature determining means 68 determines whether the ON / OFF set temperature of “freezing” is higher or lower than the ON set temperature (Step 12). That is, if the room temperature of the switching room 29 is higher than the set ON temperature, the damper device 60 in the switching room is opened by the damper device control means 69 (Step 13). On the other hand, if the room temperature is lower than the set off temperature, the damper device 60 in the switching room is not opened. That is, the cool air cooled by the cooler 37 is discharged by the blower 38 to the switching room 29 through the discharge duct 61 of the switching room, and is returned to the cooler 37 from the suction duct 52 of the switching room, so that the switching room 29 becomes-. 1
It is maintained at a set temperature such as 8 ° C. Switching means 5
9 is determined to be other than “freezing” (Step 1)
0), determine whether the quenching switch is on,
If the quenching switch is determined to be off (Step 14),
The temperature of the switching room 29 is detected by the temperature detecting means 62 (Step 15), and the indoor temperature determining means 68 determines whether the on / off set temperature other than “freezing” is higher or lower than the on set temperature (Step 16). ), Switching room 29
If the room temperature is higher than the ON set temperature, the damper device control means 69 opens the damper device 50 in the switching room (Step 17). On the other hand, if the quenching switch 67 is determined to be on (Step 14), the temperature detecting means 6
2 to detect the temperature of the switching chamber 29 (Step 1).
8) And the indoor temperature determination means 68 is a quenching switch 67
It is determined whether the temperature is high or low with respect to the off set temperature (St)
ep19) If the temperature is higher than the OFF temperature of the quenching switch 67, the damper device 60 in the switching room is opened by the damper device control means 69 (Step 20). That is, when the quenching switch 67 is off, a part of the returned cool air from the refrigerating room 27 and the low-temperature room 35 is discharged to the switching room 29, and returns to the cooler 37 via the suction duct 52 of the switching room to perform switching. The chamber 29 is maintained at a set temperature such as refrigeration (4 ° C.) and chilling (0 ° C.). Also, at this time,
When the quenching switch 67 is turned on, the damper device control unit 69 controls the damper device 6 in the switching room until the temperature detecting unit 62 reaches the off-set temperature of the quenching switch 67.
0 is released.

As described above, when it is desired to perform quick cooling in a setting other than “freezing”, the provision of the quenching switch 67 allows the cool air cooled by the cooler 37 to be discharged into the switching chamber 29. It is possible to quickly respond to a request for rapid cooling and maintain freshness. In addition, by appropriately setting the OFF setting temperature of the quenching switch 67, it is possible to prevent local overcooling and temperature unevenness of the switching room 29.

[0055]

As is apparent from the above description, according to the first aspect of the present invention, when the switching means is set to the freezing mode, the manual opening / closing device is fully opened, and the cool air cooled in the cooling chamber is switched to the switching chamber. When the switching means is set to a setting other than freezing, the manual opening / closing means is fully closed, and based on the room temperature of the switching room detected by the temperature detecting means, the damper device opens and closes the return cold air in the refrigerating room and the low temperature room. When the setting of the switching means is freezing, a sufficient cross-sectional area of the discharge path to the switching chamber is ensured so that the discharge path from the freezing chamber is It is possible to solve the problem that the freezing temperature is increased due to large ventilation resistance and cooling loss, and it is possible to cool and maintain the freezing room temperature without excess or shortage. In addition, when the setting of the switching means is other than freezing, since the return cold air of the refrigerating room and the low-temperature room near the respective set temperatures is discharged and cooled, local overcooling and temperature unevenness in the switching room. It does not occur, and can be cooled and maintained at the set temperature.

According to the second aspect of the present invention, the cooling capacity of the switching room is improved by branching a part of the cold air discharged to the cooling room through the cold air discharge duct of the cooling room and discharging the branch to the switching room. In addition, the cooling can be stably performed regardless of the temperatures of the refrigerator compartment and the low-temperature compartment.

According to the third aspect of the present invention, when the switching means is set to the freezing state, the first damper device is controlled to open and close based on the room temperature of the switching room detected by the temperature detecting means and cooled by the cooler. Cold air is discharged into the switching room to cool and maintain the cooling device. When the switching device is set to a mode other than freezing, the second damper device is controlled to open and close based on the room temperature of the switching room detected by the temperature detecting device. By using a configuration in which the return cool air is discharged into the switching room to cool and maintain the temperature, the set temperature can be maintained efficiently and accurately with respect to the setting of the switching room, and local overcooling and temperature unevenness can be achieved. Also does not occur.

According to the fourth aspect of the present invention, even when the switching means is set to a mode other than refrigeration, the temperature detecting means in the switching room detects a predetermined temperature or more in response to a rapid temperature rise due to a load in the switching room. In this case, by providing a control device that controls opening and closing of the first damper device that discharges the cool air cooled in the cooling chamber, it is possible to quickly respond to a rapid temperature rise in the switching chamber. In addition, since the temperature of the refrigerating room and the low temperature room is hardly affected, the set temperature can be stably maintained.

According to the fifth aspect of the present invention, the quenching switch operated by the switching means at the time of setting other than freezing, and when the quenching switch is turned on, cool air cooled in the cooling chamber is discharged to the switching chamber. Since the control device for opening and closing the first damper device is provided, when the switching room needs to be rapidly cooled, by turning on the rapid cooling switch, it can be quickly cooled to the set temperature, and the freshness of the food can be maintained. Can be achieved.

[Brief description of the drawings]

FIG. 1 is a front perspective view and a control block diagram of a refrigerator according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a refrigerator in Examples 1, 2, 3, 4, and 5 of the present invention.

FIG. 3 is a front perspective view and a control block diagram of a refrigerator according to a second embodiment of the present invention.

FIG. 4 is a front perspective view and a control block diagram of a refrigerator according to a third embodiment of the present invention.

FIG. 5 is a front perspective view and a control block diagram of a refrigerator according to a fourth embodiment of the present invention.

FIG. 6 is an operation flowchart of the refrigerator.

FIG. 7 is a front perspective view and a control block diagram of a refrigerator according to a fifth embodiment of the present invention.

FIG. 8 is an operation flowchart of the refrigerator.

FIG. 9 is a sectional view of a conventional refrigerator.

FIG. 10 is an electrical configuration diagram of a conventional refrigerator.

[Explanation of symbols]

 27 Refrigeration room 29 Switching room 31 Freezer room 35 Low temperature room 36 Compressor 37 Cooler 38 Blower 39 Damper device of refrigeration room 43 Refrigeration room discharge duct 44 Refrigeration room suction duct 46 Low temperature room suction duct 47,59 Switching means 48 Manual open / close device 49, 51, 61 Discharge duct of switching room 50, 60 Damper device of switching room 55, 62 Temperature detecting means 56, 63, 65, 68 Indoor temperature determining means 57, 64, 66, 69 Damper device controlling means 58 Refrigeration branch bypass Duct 67 Rapid cooling switch

Claims (5)

[Claims] 1. A freezing room, a refrigerator room, a low-temperature room for storing fish and meat at a low temperature, a switching room capable of switching room temperature, a temperature detecting means provided in the switching room, Switching means for switching the room temperature to a temperature zone other than freezing and freezing, a compressor of a refrigerating cycle, a cooler, a blower for forcibly blowing the cool air cooled by the cooler, and discharging the cooler from the blower to the switching chamber. A discharge duct, a manual opening / closing device that is provided in the discharge duct, and is fully opened when the switching means is freezing and fully closed when not being frozen, a suction duct for the refrigerator compartment and the low-temperature compartment, and Provided in a duct, a damper device for discharging a part of the return cold air of the refrigerator compartment and the low-temperature compartment to the switching compartment, and when the switching compartment is other than freezing,
A control unit for controlling opening and closing of the damper device based on a temperature detected by the temperature detection unit of the switching room. 2. The refrigerator according to claim 1, wherein a part of the cool air discharged to the refrigerator compartment is branched into a cool air discharge duct of the refrigerator compartment and discharged to the switching room. 3. A freezing room, a refrigerator room, a low-temperature room for storing fish and meat at a low temperature, a switching room capable of switching room temperature, a temperature detecting means provided in the switching room, Switching means for switching the room temperature to a temperature zone other than freezing and freezing, a compressor of a refrigerating cycle, a cooler, a blower for forcibly blowing the cool air cooled by the cooler, and discharging the cooler from the blower to the switching chamber. A discharge duct, a first damper device provided in the discharge duct, and a suction duct for the refrigerator compartment and the low-temperature compartment;
A second part provided in the suction duct and discharging a part of the return cold air from the refrigerating chamber and the low-temperature chamber to the switching chamber;
Control for opening and closing the first damper device when the switching room is frozen, and the second damper device when the switching room is not frozen, based on the damper device and the temperature detected by the temperature detection means of the switching room. Refrigerator with means. 4. The refrigerator according to claim 3, further comprising control means for controlling the opening and closing of the first damper device when the setting of the switching means is other than freezing and the temperature detecting means of the switching room detects a predetermined temperature or higher. . 5. A quenching switch which is operated when the switching means is other than a refrigeration setting;
4. The refrigerator according to claim 3, further comprising control means for controlling opening and closing of the first damper device.