JPH10311647A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator having a switching chamber for changing a temperature zone to zones of freezing and refrigerating or a low temperature zone for partially freezing or chilling as intermediate temperature between the temperatures of freezing and refrigerating depending on the use of a user, in addition to a freezing chamber and a refrigerating chamber which have been conventionally provided. SOLUTION: When a switching means 54 is set to freezing, the start of operation of a compressor 36 and a blower 38 is controlled from the temperature of the temperature detecting means 58 of a freezing chamber or the temperature detecting means 55 of a switching chamber. The stop of the operation of the compressor 36 and the blower 38 is controlled from the temperature of both the detecting means 58 of the freezing chamber the temperature detecting means 55 of the switching chamber. Thus, the temperature of the switching chamber 29 can be satisfactorily maintained at suitable temperature without depending on the temperature control of the freezing chamber 31.

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 a conventional freezing room and a refrigerator room, the temperature can be switched to a low temperature range such as freezing, refrigeration, or partial freezing or chilling which is an intermediate temperature depending on the use of a user. Refrigerators with switching rooms have been considered.

[0003] Representative examples of these are, for example, Japanese Utility Model No. 4-3.
Japanese Patent No. 8214 discloses one example, and FIG.
This will be described with reference to FIG.

Reference numeral 1 denotes a refrigerator body constituted by 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. 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 above the main body 1, and reference numeral 8 denotes a refrigerator compartment formed below the partition wall 6 below the main 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.

[0005] 10 is a compressor of the refrigeration cycle, 11 is a cooler housed in the back of the freezer 7, 12 is the cooler 1
This is a blower for forcing the cool air cooled in 1 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.

Reference numeral 15 denotes a temperature detecting means provided in the switching chamber 9, 16 denotes a temperature detecting means provided in the freezing chamber 7, and 17 denotes a switching means for switching the temperature of the switching chamber 9.

Reference numeral 18 denotes a switching room temperature controller, 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. .

The operation of the refrigerator configured as described above will be described. First, when the switching room 9 is to be refrigerated, the output of the comparison circuit 21 determined by comparison with the voltage corresponding to the temperature detected by the temperature detecting unit 15 and the switching unit 17
The output of the switching circuit 19 is determined together with the output conducted through the contact dc.

The opening and closing of the damper device 14 is controlled by the drive circuit 20 in accordance with the output, and the operation of the compressor 10 is controlled based on the output of the freezer compartment temperature detecting means 16.
In addition, cool air is introduced during the operation period of the blower 12, and 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 the voltage corresponding to the temperature detected by the temperature detecting means 15 and the contact point db of the switching means 17 are used. Switching circuit 1
9 are determined.

The opening and closing of the damper device 14 is controlled by the drive circuit 20 in accordance with this output, and the operation of the compressor 10 is controlled based on the output of the freezer compartment temperature detecting means 16.
In addition, cool air is introduced during the operation period of the blower 12, and the switching chamber 9 is kept cooled to a low-temperature 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. As a result, the drive circuit 20 is in a state where a normal drive voltage is applied, the damper device 14 is forcibly opened, and the compressor 10 and the blower 12 whose operation is controlled based on the output of the freezer compartment temperature detecting means 16 are controlled. During the operation period, the cooling air is introduced, and the switching room 9 is cooled to the freezing temperature.

[0013]

However, in the above configuration, when the switching chamber 9 is set to freezing, the damper device 14 is forcibly opened, so that the temperature of the switching chamber 9 decreases when the compressor 10 and the blower 12 operate. It depends on the state, that is, the temperature control of the freezer 7. For this reason, even if the temperature of the switching room 9 is high, if the freezing room 7 is cooled normally, there is a problem in practical use such that the cooling operation is stopped.

Conversely, even when the temperature of the switching room 9 is sufficiently low, if the temperature of the freezing room 7 is high, cold air continues to be introduced and the switching room 9 is supercooled greatly, but the freezing room 7 is kept at an appropriate temperature. There is also a problem that it takes a long time to recover, which is not preferable for keeping food fresh.

[0015] It is an object of the present invention to provide a refrigerator which can maintain the refrigerating temperature of the switching room at a reasonable temperature.

[0016]

In order to attain this object, a refrigerator according to the present invention is arranged such that when the setting of the switching means is freezing, the operation of the compressor and the blower is started by the temperature detection means of the freezing compartment and the switching of the switching compartment. Control means for controlling based on any temperature of the temperature detecting means, and controlling stop of the operation of the compressor and the blower based on the temperature of either of the freezing room temperature detecting means and the switching room temperature detecting means. Things.

Thus, the temperature of the switching room can be maintained at an appropriate temperature without excess or shortage without depending on the temperature control of the freezing room.

[0018] Further, there is provided control means for controlling opening and closing of the damper device based on temperature detection means of the switching room.

Thus, even when the temperature of the freezing room is high and the cooling operation is continued, the switching room is not unreasonably overcooled, and the freezing room returns to an appropriate temperature in a short time, which is preferable for keeping food.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention relates to a freezing room, a refrigerating room, a switching room, temperature detecting means provided in each room, and switching means for switching the room temperature of the switching room between freezing and a temperature zone other than freezing, A compressor, a cooler, a blower, a damper device for adjusting the amount of cool air in the switching room, and, when refrigeration is set, when the temperature of the temperature detecting means of the freezing room is higher than the set temperature of the freezing room or in the switching room. And control means for starting the operation of the compressor and the blower when the temperature of the temperature detecting means is higher than the set temperature of the switching chamber.

Then, even if the temperature of either the freezing room or the switching room becomes higher than the set temperature, the cooling operation can be started and the appropriate temperature can be maintained.

Further, the operation of the compressor and the blower is stopped when the temperatures of the temperature detecting means in the freezing room and the switching room are both lower than the set temperatures.

Then, after the temperatures of both the freezing room and the switching room have become appropriate, the cooling operation can be stopped and the appropriate temperature can be maintained.

Further, the opening and closing of the damper device is controlled based on the temperature detecting means of the switching room.

Then, even when the temperature of the freezer compartment is high and the cooling operation is continued, if the temperature of the switching compartment reaches a predetermined temperature, the damper device is closed and is not overcooled.

When the difference between the temperature of the freezer compartment temperature detecting means and the set temperature is greater than the difference between the temperature of the switching compartment temperature detecting means and the set temperature, the damper device is closed.

When the temperature of the freezing room and the switching room rises above the set temperature to enter the cooling operation state, if the temperature increase of the freezing room is larger than that of the switching room, the damper device is closed and the freezing room is closed. This is to increase the cooling rate for returning to an appropriate temperature by giving priority to cooling.

Further, the temperature of the temperature detecting means of the freezing compartment is equal to the first temperature.
When the temperature is higher than the predetermined temperature and the temperature of the temperature detecting means in the switching chamber is lower than the second predetermined temperature, the damper device is closed.

When the temperature of the freezing room and the switching room rises above the set temperature to enter the cooling operation state, if the temperature of the freezing room rises greatly and becomes higher than a predetermined temperature, the temperature of the switching room rises. When the temperature is small and lower than the predetermined temperature, the damper device is closed to give priority to the cooling of the freezing room, and the cooling rate for returning the temperature to an appropriate temperature is increased.

[0030]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a refrigerator according to the present invention will be described below.
This will be described with reference to the drawings. The same components as those in the related art are denoted by the same reference numerals, and detailed description is omitted.

(Embodiment 1) FIG. 1 is a longitudinal sectional view of a refrigerator according to Embodiment 1 of the present invention.

In FIG. 1, 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 main body 23, and has a rotary door 28.

A switching room 29 is formed between the partition walls 24 and 25 and has a drawer-type door 30.
"Frozen", "refrigerated" and partial freezing (-
3 ° C.) and chilled (0 ° C.).

A freezing room 31 is formed between the partition walls 25 and 26 and has a drawer-type door 32. Reference numeral 33 denotes a vegetable compartment formed below the partition wall 26 and below the main body 23, and includes 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, meat and the like.

Reference numeral 36 denotes a compressor of a refrigeration cycle provided at the bottom of the main body, 37 denotes a cooler, and 38 denotes a blower for forcibly blowing the cool air cooled by the cooler 37 into the refrigerator. Numeral 39 denotes a damper device for feeding the required amount of cold air to the refrigerating room 27 and the low-temperature room 35, and 40 to the switching room 29.

Reference numeral 41 denotes a freezer compartment discharge duct, one end of which is open to the vicinity of the cooler 37 and the other end of which is open to the freezer compartment 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 is open to the vicinity of the cooler 37 via a damper device 39, and the other end of which is open to the refrigerating room 27.

Reference numeral 44 denotes a refrigerator compartment suction port, which communicates with the vicinity of the lower portion of the cooler 37 via a refrigerator compartment suction duct (not shown). A low-temperature chamber discharge duct 45 has one end opened near the cooler 37 via the damper device 39 and the other end opened to the low-temperature chamber 35.

Reference numeral 46 denotes a low-temperature chamber suction port provided at the bottom of the refrigerator compartment, which communicates with the vicinity of the lower portion of the cooler 37 via a low-temperature chamber suction duct (not shown). 47 is a switching room discharge duct formed on the switching room top surface, one end of which is opened near the cooler 37 via the damper device 40,
The other end is open to the switching chamber 29.

Reference numeral 48 denotes a switching room suction duct.
One end is opened to the switching chamber 29, and the other end is opened near the lower part of the cooler 37. Reference numeral 49 denotes a vegetable compartment discharge duct, one end of which is connected to the damper device 39, and the other end of which is the vegetable compartment 3.
3 is open. Reference numeral 50 denotes a vegetable compartment suction duct, one end of which is open to the vegetable compartment 33 and the other end is open near the lower portion of the cooling chamber 37.

Reference numeral 51 denotes a temperature detecting means provided in the refrigerator compartment 27. 52 is an indoor temperature determining means for determining whether the indoor temperature TP detected by the temperature detecting means is within a set temperature range (set temperature P1 to set temperature P2).

Numeral 53 denotes a damper control means for instructing the opening and closing of the damper 39 based on the output of the room temperature determining means 52. Reference numeral 54 denotes switching means for switching the temperature zone of the switching chamber 29 between "freezing", "refrigeration", and "low temperature (partial freezing, chilled, etc.)".

Reference numeral 55 denotes a temperature detecting means provided in the switching chamber 29. Reference numeral 56 denotes a room temperature TS detected by the temperature detecting means 55 within a set temperature range selected by the switching means 54 ("freezing": the set temperature S1 or less,
"Low temperature": Set temperature S3 to set temperature S4, "Refrigeration":
This is an indoor temperature determining means for determining whether the temperature is from the set temperature S5 to the set temperature S6). Reference numeral 57 denotes a damper device control unit that commands opening and closing of the damper device 40 based on the output of the indoor temperature determination unit 55.

Reference numeral 58 denotes a temperature detecting means provided in the freezing room 31. Reference numeral 59 denotes an indoor temperature determining unit that determines whether the indoor temperature TF detected by the temperature detecting unit 58 is within a set temperature range (set temperature F1 to set temperature F2).

When the switching room 29 is set to the "freezing" setting,
The damper device 40 is forcibly opened by the output of the damper device control means 57. The output of "the indoor temperature TS is higher than the set temperature S1" from the indoor temperature determining means 56 or the "the indoor temperature TF is higher than the set temperature F1" from the indoor temperature determining means 59.
If any of the outputs are provided, the compressor control means 60 instructs the compressor 36 to start operating, and at the same time, the blower control means 61
Then, the operation start of the blower 38 is instructed. Switching room 29
Is set to other than “freezing”, the indoor temperature determination means 5
If there is an output indicating that "the room temperature TF is higher than the set temperature F1", the operation of the compressor 36 and the blower 38 is started.

The operation of the above configuration will now be described with reference to the flowchart of FIG. 2 and the time chart of FIG.

First, the setting of the switching means 54 is "frozen".
(Step 1), the damper device control means 5
7, the damper device 40 is forcibly released (Step
2). The temperature in the switching room 29 is detected by the temperature detecting means 55, and the indoor temperature determining means 56 is switched by the indoor temperature T.
If it is determined that S is higher than the set temperature S1 of “refrigeration” (Step 3), the compressor
Is operated (Step 4), and at the same time, the blower 38 is operated by the blower control means 61 (Step 5).

Even if it is determined that the switching room temperature TS is lower than the set temperature S1 of "freezing" (Step 3), the temperature in the freezing room 31 is detected by the temperature detecting means 58, and the freezing temperature is detected by the indoor temperature determining means 59. The room temperature TF is equal to the set temperature F
1 (Step 6), the compressor 3
6 and the blower 38 are operated (Steps 4 and 5).

Next, the temperature of the refrigerator compartment 27 is detected by the temperature detecting means 51.
Is detected, and if the indoor temperature determination means 52 determines that the refrigerated indoor temperature TP is higher than the set temperature P1 (S
(Step 7) The damper device 39 of the refrigerator compartment 27 is opened by the damper device control means 53 (Step 8). If the refrigerator compartment temperature TP falls and becomes lower than the set temperature P2 (Step 9), the damper device 39 is closed (Step 9).
10).

Next, the setting of the switching means 54 is set to "freezing".
If it is not determined (Step 1), if the indoor temperature determining means 59 determines that the freezing room temperature TF is higher than the set temperature F1 (Step 11), the compressor 36 and the blower 38 are operated (Steps 12 and 13). When the room temperature determining means 52 determines that the refrigerator room temperature TP is higher than the set temperature P1 (Step 14), the damper device 39 of the refrigerator room 27 is opened (Step 15). If the refrigerator compartment temperature TP falls and becomes lower than the set temperature P2 (St
ep16), the damper device 39 is closed (Step 1).
7).

Further, when the setting of the switching means 54 is determined to be "low temperature" (Step 18), if the room temperature determining means 56 determines that the switching room temperature TS is higher than the set temperature S3 of "low temperature" (Step 19). ), The damper device 40 in the switching room 29 is opened (Step 2).
0). When the switching room TS falls and becomes lower than the set temperature S4 (Step 21), the damper device 40 is closed (Step 22).

On the other hand, the setting of the switching means 54 is "low temperature".
Is not determined, that is, when it is determined to be “refrigerated” (S
If the switching room temperature TS is determined to be higher than the set temperature S5 of “refrigeration” by the room temperature determination means 56 (Step 23), the damper device 40 of the switching room 29 is opened (Step 24). Switching room TS
Falls below the set temperature S6 (Step 2).
5) The damper device 40 is closed (Step 22).

The temperature of each room becomes appropriate, and the room temperature judging means 59
When it is determined that the freezing room temperature TF is lower than the set temperature F2 (Step 26), the operation of the compressor 36 is stopped by the compressor control means 60 (Step 27), and at the same time, the operation of the blower 38 is performed by the blower control means 61. It stops (Step 28).

As described above, the switching means 54 is "freezing"
Is selected, the switching room temperature TS is set to "freezing".
Or higher than the set temperature S1 of the freezing room temperature T1.
In any case where F becomes higher than the set temperature F1, the operation of the compressor 36 and the blower 38 is started, and the cool air cooled by the cooler 37 is supplied from the switching room discharge duct 47 via the damper device 40 to the switching room 29. And returned to the cooler 37 through the switching chamber suction duct 48,
The temperature is maintained at an appropriate temperature such as −18 ° C. in the switching room 29.

Therefore, as shown in FIG. 3, for example, even if the room temperature of the freezing room 31 is a predetermined temperature, if the room temperature of the switching room 29 becomes higher than the predetermined temperature, the cooling operation is started and the temperature of the switching room 29 rises. And maintained at an appropriate temperature such as -18 ° C. When “Refrigerated” is selected, the damper device 4
The opening time of 0 is shortened, and the temperature is maintained at an appropriate temperature such as 4 ° C.

Further, when "low temperature" is selected, the opening time of the damper device 40 becomes longer than that of "refrigeration", and the damper device 40 is cooled to an appropriate temperature such as partial freezing (-3.degree. C.) or chilled (0.degree. C.). Further, the refrigerant is discharged into the freezer compartment 31 via the freezer compartment discharge duct 41, returned to the cooler 37 from the freezer compartment suction duct 42, and maintained at an appropriate temperature such as -18 ° C.

Further, the refrigerant is discharged from the refrigerator compartment discharge duct 43 to the refrigerator compartment 27 via the damper device 39, and is returned to the cooler 37 via the refrigerator compartment suction duct (not shown) from the refrigerator compartment suction port 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 is discharged to the low-temperature chamber 35 through the low-temperature chamber discharge duct 45, and is discharged from the low-temperature chamber suction port 46 through the low-temperature chamber suction duct (not shown). Returning to the cooler 37, the low temperature chamber 35 is maintained at an appropriate temperature such as -3C. At the same time, a part of the cool air that has passed through the damper device 39 is discharged to the vegetable compartment 33 through the vegetable compartment discharge duct 49, and returns to the cooler 37 through the vegetable compartment suction duct 50, so that the vegetable compartment 33
Is maintained at an appropriate temperature such as 6 ° C.

(Embodiment 2) FIG. 4 is a longitudinal sectional view of a refrigerator according to Embodiment 2 of the present invention.

In FIG. 4, reference numeral 62 denotes a room temperature TS detected by the temperature detecting means 55 of the switching room 29 within a set temperature range selected by the switching means 54 ("freezing": from the set temperature S1 to the set temperature S2, "Low temperature": a room temperature determining means for determining whether the temperature is from the set temperature S3 to the set temperature S4, and "refrigeration": from the set temperature S5 to the set temperature S6).

Reference numeral 63 denotes an indoor temperature determining means for determining whether or not the indoor temperature TF detected by the temperature detecting means 58 of the freezer compartment 31 is within a set temperature range (from the set temperature F1 to the set temperature F2).

When the switching room 29 is set to the "freezing" setting,
If either of the indoor temperature determining means 62 of the switching room 29 and the indoor temperature determining means 63 of the freezing room 31 has an output of “the indoor temperature is higher than the set temperature”, the compressor control means 64 starts the operation of the compressor 36. At the same time, the blower controller 65 instructs the blower 38 to start operating.

Further, if both the indoor temperature determining means 62 and the indoor temperature determining means 63 output "room temperature is lower than the set temperature", a command to stop the operation of the compressor 36 and the blower 38 is issued.

When the switching room is not set to the "freezing" setting,
If there is an output from the indoor temperature determining means 63, the compressor control means 64 instructs the operation start of the compressor 36, and at the same time, the blower control means 65 instructs the operation start and stop of the blower 38.

The operation of the above configuration will be described with reference to the flowchart of FIG. 5 and the time chart of FIG.

First, the setting of the switching means 54 is "frozen".
(Step 1), the damper device 40 is forcibly opened (Step 2), and if the indoor temperature detecting means 62 determines that the switching indoor temperature TS is higher than the set temperature S1 of "freezing" (Step 3), the compression is performed. Machine 36 and blower 38
Is operated (Steps 4 and 5). Indoor temperature determination means 62
Is switched, if the indoor temperature determining means 63 determines that the freezing room temperature TF is higher than the set temperature F1, even if it determines that the indoor temperature TS is lower than the set temperature S1 of "refrigeration", the compressor 36 and the blower Drive 38 (Steps 3, 6,
4,5).

Next, if the refrigerator compartment temperature TP is higher than the set temperature P1, the damper device 29 of the refrigerator compartment 27 is opened (Steps 7 and 8). When the refrigerator compartment temperature TP falls and becomes lower than the set temperature P2, the damper device 39 is closed (Steps 9 and 10). The switching room temperature TS becomes lower than the set temperature S2 (Step 11), and the freezing room temperature T
When F becomes lower than the set temperature F2 (Step 12), the compressor 36 is stopped by the compressor control means 64 (Step 12).
13) At the same time, the blower 38 is stopped by the blower control means 65 (Step 14).

As described above, the switching means 54 sets the "freezing"
Is selected, the switching room temperature TS is “frozen”.
Or higher than the set temperature S1 of the freezing room temperature T1.
In either case where F becomes higher than the set temperature F1, the operation of the compressor 36 and the blower 38 is started, the switching room temperature TS becomes lower than the set temperature S2 of "freezing", and the freezing room temperature TF becomes the set temperature. In order to control the operation of the compressor 36 and the blower 38 to be stopped when the temperature becomes lower than F2, the switching room 29 is used more frequently than the freezing room 31 as shown in FIG. In the case where the room temperature of the switching room 29 has not yet reached the predetermined temperature even if the room temperature has reached the predetermined temperature, the cooling operation is continued until the room temperature of the switching room 29 reaches the predetermined temperature, thereby preventing insufficient cooling. . That is, in practical terms, both the switching room 29 and the freezing room 31 can be maintained at a desired freezing temperature or lower.

(Embodiment 3) FIG. 7 is a longitudinal sectional view of a refrigerator according to Embodiment 3 of the present invention.

In FIG. 7, reference numeral 66 denotes a room temperature TS detected by the temperature detecting means 55 of the switching room 29 within the set temperature range selected by the switching means 54 ("freezing": from the set temperature S1 to the set temperature S2, "Low temperature": a room temperature determining means for determining whether the temperature is from the set temperature S3 to the set temperature S4, and "refrigeration": from the set temperature S5 to the set temperature S6).

Reference numeral 67 denotes an indoor temperature judging means for judging whether the indoor temperature TF detected by the temperature detecting means 58 of the freezing room 31 is within a set temperature range (set temperature F1 to set temperature F2). When the switching room 29 is set to the “freezing” setting, the compression is performed if there is an output of “the indoor temperature is higher than the set temperature” from either the indoor temperature determining unit 66 of the switching room 29 or the indoor temperature determining unit 67 of the freezing room 31. The operation of the compressor 36 is instructed by the air blower control means 69 at the same time.
Then, the operation start of the blower 38 is instructed.

Further, regardless of the setting of the switching room 29,
Based on the output of the room temperature determining means 66, the damper device control means 70 instructs the opening and closing of the damper device 40.

Further, if there is an output of “the indoor temperature is lower than the set temperature” from both the indoor temperature judging means 66 and the indoor temperature judging means 67, the compressor 36 and the blower 38 is commanded to stop.

Next, the operation of the above configuration will be described with reference to the flowchart of FIG. 8 and the time chart of FIG.

First, the setting of the switching means 54 is "frozen".
And the room temperature determining means 66 switches the room temperature T
If it is determined that S is higher than the set temperature S1 of "freezing", the damper device 40 is opened by the damper device control means 70 (Steps 1, 2, 3), and the compressor 36 is controlled by the compressor control means 68 to blower control means. The blower 38 is operated by 69 (Steps 14 and 15).

If the room temperature determining means 66 determines that the freezing room temperature TF is higher than the set temperature F1 even if the indoor temperature determining means 66 switches and the indoor temperature TS is determined to be "lower than the set temperature S1," The compressor 36 and the blower 38 are operated (Steps 2, 6, 4, and 5).

Next, if the refrigerator compartment temperature TP is higher than the set temperature P1, the damper device 39 of the refrigerator compartment 27 is opened, and if the refrigerator compartment temperature TP falls and becomes lower than the set temperature P2, the damper device 39 is closed. (Steps 7, 8,
9, 10).

When the switching room temperature TS becomes lower than the set temperature S2, the damper device 40 is closed (Step 11,
12) When the refrigerator compartment temperature TF becomes lower than the set temperature F2 (Step 12), the compressor 36 and the blower 38 are stopped (Steps 14 and 15).

As described above, since the damper device 40 is controlled to open and close based on the output of the room temperature determining means 66 regardless of the setting of the switching means 54, even if the setting of the switching means 54 is "freezing", the switching room is set. In order to control the opening and closing of the damper device 40 when the temperature TS is within the range of the set temperature S1 to S2 of "freezing", the freezing room 31 is used more frequently than the switching room 29, as shown in FIG.
When the room temperature of 1 rises, the operation of the compressor 36 and the blower 38 continues, but the switching chamber 29 is not closed unnecessarily by damping the damper device 40 at the set temperature S2, and is not unnecessarily supercooled. (Embodiment 4) FIG. 10 is a longitudinal sectional view of a refrigerator according to Embodiment 4 of the present invention.

In FIG. 10, reference numeral 71 denotes a room temperature TS detected by the temperature detecting means 55 of the switching room 29 within the set temperature range selected by the switching means 54 ("freezing": from the set temperature S1 to the set temperature S2, "Low temperature": Set temperature S3 from set temperature S3, "Refrigeration": Set temperature S5 to set temperature S6), switch room 2
9 is "freezing" setting, room temperature TS and set temperature S1
Is a room temperature determining means for calculating the temperature difference ΔTS of the room.

A reference numeral 72 determines whether the room temperature TF detected by the temperature detecting means 58 of the freezing room 31 is within a set temperature range (from the set temperature F1 to the set temperature F2). This is room temperature determination means for calculating the temperature difference ΔTF of the set temperature F1.

Numeral 73 denotes room temperature difference comparing means for comparing the temperature difference ΔTF and the temperature difference ΔTS. When the temperature difference ΔTF is larger than the temperature difference ΔTS, the room temperature difference comparing means 73 outputs the temperature difference ΔTF to the damper device control means 74 and outputs the same to the damper device 40. Close.

The operation of the above configuration will now be described with reference to the flowchart of FIG. 11 and the time chart of FIG.

The temperature difference ΔTF of the freezing room 31 is changed to the switching room 2
When the indoor temperature difference comparing means 73 determines that the temperature difference ΔTS has become larger than the temperature difference ΔTS of 9 or when the indoor temperature determining means 71 determines that the switching indoor temperature TS has become lower than the set temperature S2, the damper device control means 74 causes the damper device control means 74 to determine. Close 40. (Steps 11, 12, 13, 14).

As described above, when the setting of the switching means 54 is “refrigeration”, when the compressor 36 and the blower 38 are operated to open the damper device 40 and the switching room 29 and the freezing room 31 are cooling-operated, When the temperature difference ΔTF between the room temperature TF of the freezing room 31 and the set temperature F1 becomes larger than the temperature difference ΔTS between the room temperature TS of the switching room 31 and the set temperature S1,
In order to control the closing of the damper device 40, when the frequency of use of the freezing room 31 is extremely increased and the temperature rises sharply, the operation of the compressor 36 and the blower 38 is continued, but the switching room 29 is operated.
To the temperature difference ΔT of the freezer compartment 31
While F is larger than the temperature difference ΔTS of the switching chamber 29, the switching chamber 29 is closed and concentrated on cooling the freezing chamber 31, so that the time for returning the freezing chamber 31 to a low temperature can be shortened, and the switching chamber 29 is unnecessary. Is not excessively cooled (shaded portion in FIG. 12).

(Embodiment 5) FIG. 13 shows Embodiment 5 of the present invention.
FIG.

In FIG. 13, reference numeral 75 denotes a room temperature TS detected by the temperature detecting means 55 of the switching room 29 within the range of the set temperature selected by the switching means 54 ("freezing": from the set temperature S1 to the set temperature S2, "Low temperature": Set temperature S4 from set temperature S3, "Refrigeration": Set temperature S5 to set temperature S6), and in the case of "Freezing" setting, room temperature TS is set to set temperature S7 (set temperature S1).
This is an indoor temperature determining means for determining whether the temperature is lower.

The reference numeral 76 determines whether the room temperature TF detected by the temperature detecting means 58 of the freezing room 31 is within a set temperature range (from the set temperature F1 to the set temperature F2), and the room temperature TF is set to the set temperature F3 (set temperature F1). This is an indoor temperature determining means for determining whether the temperature is higher. If the room temperature determination means 75 determines that the room temperature TF is higher than the set temperature F3 and the room temperature determination means 74 determines that the room temperature TS is lower than the set temperature S7, the room temperature is output to the damper device control unit 77 and output to the damper device. Close 40.

The operation of the above configuration will now be described with reference to the flowchart of FIG. 14 and the time chart of FIG.

When the indoor temperature determining means 76 determines that the indoor temperature TF of the freezing room 31 has become higher than the set temperature F3 and the indoor temperature determining means 75 determines that the indoor temperature TS of the switching room 29 is lower than the set temperature S7, The damper device 40 is closed by the damper device control means 77 (Step 1).
1, 12, 13).

As described above, when the setting of the switching means 54 is “refrigeration”, when the compressor 36 and the blower 38 are operated to open the damper device 40 and the switching room 29 and the freezing room 31 are cooling-operated, Even if the room temperature TF of the freezing room 31 is higher than the set temperature F3, if the room temperature TF of the switching room 31 is lower than the set temperature S7, the damper device 4
When the freezing chamber 31 is used extremely frequently and the temperature rises sharply, the compressor 36 and the blower 3
8 is continued, the damper device 40 is switched to the switching room 29 and the room temperature TF of the freezing room 31 is set to the set temperature F.
When the room temperature TS of the switching room 29 is higher than 3 and the room temperature TS of the switching room 29 is lower than the set temperature S7, the cooling operation is concentrated on the cooling of the freezing room 31, so that the time required for returning the freezing room 31 to an appropriate temperature can be shortened. The switching chamber 29 is not unnecessarily supercooled (the hatched portion in FIG. 15).

[0091]

As described above, according to the refrigerator of the present invention, when the setting of the switching means is freezing, when the temperature of the temperature detecting means of the freezing room is higher than the set temperature of the freezing room or the temperature detecting means of the switching room. Since the control means for starting the operation of the compressor and the blower when the temperature of the switching room is higher than the set temperature of the switching room is provided, the cooling operation is performed even if the temperature of either the freezing room or the switching room becomes higher than the set temperature. Start,
Both rooms can maintain an appropriate temperature.

Further, since the operation of the compressor and the blower is stopped when the temperatures of the temperature detecting means in the freezing room and the switching room are both lower than the set temperature, the switching room is used more frequently than the freezing room, In the case where the room temperature of the switching room has not reached the predetermined temperature even though the room temperature has reached the predetermined temperature, the cooling operation should be continued until the constant temperature of the switching room reaches the predetermined temperature to prevent insufficient cooling. Can be.

Even when the setting of the switching means is "freezing", the damper device is controlled to open and close within the switching room temperature within the set temperature of "freezing". When the room temperature of the freezing room becomes high, the operation of the compressor and the blower is continued, but the switching room is not blocked and unnecessarily supercooled when the damper device reaches the set temperature.

When the temperature of the freezing room and the switching room rises above the set temperature to enter the cooling operation state, if the temperature rise of the freezing room is larger than that of the switching room, the operation of the compressor and the blower is stopped. Although it continues, since the damper device is closed while the temperature difference of the freezing room is larger than the temperature difference of the switching room, the switching room is not unnecessarily supercooled and the cooling of the freezing room is concentrated. As a result, the time required for the freezing compartment to return to an appropriate temperature can be shortened.

When the temperatures of the freezing compartment and the switching compartment rise above the set temperature to enter the cooling operation state, the temperature detecting means of the freezing compartment has a temperature higher than the first predetermined temperature and the temperature detecting means of the switching compartment. Since the damper device is closed while the temperature is lower than the second predetermined temperature, the switching room is not supercooled unnecessarily, and the cooling speed for returning the freezing room to an appropriate temperature by giving priority to the cooling of the freezing room is increased. Temperature control becomes possible.

[Brief description of the drawings]

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

FIG. 2 is a flowchart according to the first embodiment.

FIG. 3 is a timing chart in the first embodiment.

FIG. 4 is a vertical sectional view and a control block diagram of Embodiment 2 of the refrigerator according to the present invention.

FIG. 5 is a flowchart according to the second embodiment.

FIG. 6 is a timing chart in the second embodiment.

FIG. 7 is a longitudinal sectional view and a control block diagram of a refrigerator according to a third embodiment of the present invention.

FIG. 8 is a flowchart according to the third embodiment.

FIG. 9 is a timing chart in the third embodiment.

FIG. 10 is a longitudinal sectional view and a control block diagram of a refrigerator according to a fourth embodiment of the present invention.

FIG. 11 is a flowchart according to the fourth embodiment.

FIG. 12 is a timing chart in the fourth embodiment.

FIG. 13 is a longitudinal sectional view and a control block diagram of Embodiment 5 of the refrigerator according to the present invention.

FIG. 14 is a flowchart according to the fifth embodiment.

FIG. 15 is a timing chart in the fifth embodiment.

FIG. 16 is a longitudinal sectional view of a conventional refrigerator.

FIG. 17 is an electrical structural diagram of a conventional refrigerator.

[Explanation of symbols]

27 Refrigeration room 29 Switching room 31 Freezer room 36 Compressor 37 Cooler 38 Blower 40 Switching room damper device 54 Switching means 55 Switching room temperature detecting means 56, 62, 66, 71, 75 Switching room indoor temperature determining means 57 , 70, 74, 77 Damper device control means for switching room 58 Freezing room temperature detecting means 59, 63, 67, 72, 76 Freezing room temperature determining means 60, 64, 68 Compressor controlling means 61, 65, 69 Blower control means 73 Room temperature difference comparison means

Claims (5)

[Claims] 1. A freezing room, a refrigerating room, a switching room capable of switching between room temperatures, temperature detecting means provided in the freezing room, the refrigerating room and the switching room, and a room temperature in the switching room other than freezing and freezing. Switching means for switching to a temperature zone; a compressor and a cooler of a refrigeration cycle; a blower for forcibly ventilating the cool air cooled by the cooler; a damper device for adjusting the amount of cool air in a switching chamber; When the freezing is set, the operation of the compressor and the blower is performed when the temperature of the temperature detecting means of the freezing room is higher than the set temperature of the freezing room or when the temperature of the temperature detecting means of the switching room is higher than the set temperature of the switching room. Refrigerator with control means to start the operation. 2. The refrigerator according to claim 1, wherein the control means stops the operation of the compressor and the blower when the temperatures of the temperature detection means in the freezing room and the switching room are both lower than the set temperatures. 3. The control means controls opening and closing of the damper device based on temperature detection means of the switching chamber.
The refrigerator as described. 4. The control means closes the damper device when the difference between the temperature of the temperature detection means in the freezer compartment and the set temperature is greater than the difference between the temperature of the temperature detection means in the switching compartment and the set temperature.
The refrigerator according to any one of claims 1 to 3. 5. The control means closes the damper device when the temperature of the temperature detection means of the freezing room is higher than the first predetermined temperature and the temperature of the temperature detection means of the switching room is lower than the second predetermined temperature. The refrigerator according to any one of claims 1 to 3.