JP2002031466A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem of a prior art refrigerator that a freezing compartment is also cooled at the time of cooling other compartment even if the freezing compartment has been cooled sufficiently because the freezing compartment is not provided with a damper and temperature is controlled by simply turning a chill supply fan on/off, and the problem that the time for operating a compressor at a high r.p.m. is prolonged after defrost operation because air in the vicinity of a cooler heated by means of a defrost heater during defrost operation flows into the freezing compartment provided with no damper and the temperature of the freezing compartment increases by about 7 deg.C ac compared with that before defrost operation. SOLUTION: The refrigeration compartment and all independent compartments having independent doors and air passages arranged in parallel are provided with dedicated dampers in front of the chill outlets thereof. Highly accurate temperature control and energy saving are realized by controlling each damper to optimize the air volume.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a high-precision temperature control with an appropriate air volume by providing a damper, which is a means for adjusting the air volume of a refrigerator, in all the independent rooms having a freezer compartment and an independent door and having parallel air paths. And energy saving.

[0002]

2. Description of the Related Art FIG. 13 is a schematic view showing a flow of cold air in a conventional technique. In the figure, 1 is a fan in a refrigerator, 3 is a switch room damper, 4 is an ice making room damper, 5 is a refrigerator room damper, 6 is a slide room damper, 22 is a cooler, 39 is a refrigerator room, 40 is a slide room, and 41 is a slide room. An ice making room, 42 is a switching room, 43 is a vegetable room, and 44 is a freezing room. In a refrigerator in which two or more rooms including the refrigerator compartment 39 and the freezer compartment 44 are cooled by one cooler 22 and one cool air blower fan 1, the temperature control of the freezer compartment 44 is performed by compression based on the temperature detected by the freezer thermistor. It was done by turning on and off the machine and the fan 1 in the refrigerator. The freezer compartment 44 does not have a damper, and always cools when the in-compartment fan 1 is driven. However, the freezing compartment 44 is different from other compartments such as the refrigerating compartment 39. Even if it is cooled more than necessary, there is no problem in preservation of food, and it is generally supercooled.

[0003] Further, the refrigerator needs to remove frost on the cooler 22 about once a day in order to sufficiently exert the capacity of the cooler 22. At the time of this defrosting, since the cooling by the operation of the compressor cannot be actively performed, the freezing chamber 44 at the time of the defrosting is not provided.
For the purpose of preventing adverse effects on food due to temperature rise in each room including the above, pre-cooling is performed by forcibly turning on the compressor and the internal fan 1 regardless of the temperature of the freezing room 44 before defrosting. However, the rise in the temperature of the food was suppressed only to a certain extent. Further, in order to cool the cooler 22 whose temperature has increased during the defrosting, the operation is performed by increasing the rotation speed of the compressor after the defrosting.

[0004]

As shown in the prior art, the freezing compartment 44 does not have a damper and the temperature is controlled only by ON / OFF of the compressor and the cool air blower fan 1.
Even if the freezing room 44 is sufficiently cooled, when the other room is cooled, the freezing room 44 is also cooled.
The cooling of the chambers other than 4 becomes slow, and the operation time of the compressor becomes long.

Further, since there is no damper in the freezing compartment 44, air near the cooler heated by the defrost heater flows into the freezing compartment during the defrosting operation, and the temperature of the freezing compartment 44 after defrosting is lower than that before defrosting. The temperature rises by about 7 ° C., and the time for operating the compressor at a high speed after the defrosting operation becomes longer.

Accordingly, the present invention performs high-precision temperature control of each room with an appropriate air volume, prevents a decrease in the temperature rise width of each room during defrosting, and prevents cooling of a freezing room more than necessary, thereby achieving cooling. The purpose of the present invention is to reduce the operation time of the compressor and reduce the power consumption by blowing an appropriate air volume to a required room.

[0007]

A refrigerator according to the present invention includes two or more storage rooms including a freezer room and a refrigerator room.
An air path from a cooler for supplying cool air to the freezing room and the refrigerating room is provided in parallel, and a damper is provided inside the air path from the cooling room to the freezing room.

[0008] Further, there is provided a damper in the air passage from the cooler to each of the parallel chambers.

Further, each chamber to which cool air is supplied via a damper inside each air passage has a thermistor for damper control.

[0010] The capacity of the compressor is variable.

[0011] Further, the number of rotations of the cool air blowing fan in the refrigerator is made variable.

[0012] Further, there is provided a flow control means for controlling the flow rate of the refrigerant.

Further, a damper in the air passage is provided adjacent to the cooler.

Further, a heater for preventing icing is provided around the drive section of the damper.

The damper is a freezer compartment damper or a switching compartment damper capable of switching to a freezer compartment temperature.

Further, means for enabling a user to arbitrarily give an instruction for rapid cooling is provided.

Further, at the time of defrosting, all the dampers are closed.

Further, after the defrosting, the refrigerating compartment damper is opened and the fan in the refrigerator is driven for a predetermined time or until the defrosting thermistor reaches a predetermined temperature.

Further, a deodorizing device is provided in the cooling chamber.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a schematic diagram showing the flow of cool air in the first embodiment of the present invention, FIG. 2 is an overall front view of a refrigerator showing the first embodiment of the present invention, and FIG.
1 is a side sectional view of a refrigerator according to Embodiment 1 of the present invention. In the figure, 1 is a fan in the refrigerator, 2 is a freezing room damper, 3 is a switching room damper, 4 is an ice making room damper, 5 is a refrigeration room damper, 6 is a slide room damper, 7 is a freezing room air path (blowing), 8 Is a switching room air path (blowing out), 9 is an ice making room air blowing (blowing out), 10 is a refrigerator room air blowing (blowing out), 11
Is a slide chamber air path (blower), 12 is an ice making chamber blower, 13 is a switching chamber blower, 14 is a slide chamber blower, 15 is a refrigerator compartment blower, 16 is a freezing room thermistor, 17 is a vegetable room thermistor, 18 Is an ice making room thermistor, 19 is a switching room thermistor, 20 is a sliding room thermistor, 21 is a refrigerator room thermistor, 22 is a cooler, 23 is a compressor, 24 is a defrost heater, 25 is a vegetable room floor plate, 26
Is a switching room / ice room floor plate, 27 is a refrigerator room floor plate, 28 is an inner box, 29 is an outer box, 30 is a refrigerator room door, 31 is an ice room door, 3
2 is a switching room door, 33 is a vegetable room door, 34 is a freezing room door, 35
Is a refrigerator room shelf a, 36 is a refrigerator room shelf b, 37 is a refrigerator room shelf c,
38 is a refrigerator room shelf d, 39 is a refrigerator room, 40 is a slide room,
41 is an ice making room, 42 is a switching room, 43 is a vegetable room, 44 is a freezing room, and 50 is a bypass air passage. In each of the compartments, a refrigerating compartment 39 including a slide compartment 40 therein, an ice making compartment 41 and a switching compartment 42 below, a vegetable compartment 43 below, and a freezing compartment 44 at the bottom are arranged.

In the air passage 7 extending from the cooler 22 to the inside of the freezing room 44, there is a damper 2 dedicated to the freezing room and a fan 1 in the refrigerator.
There is no other wind path to other than. Cool air is blown to each room by the rotation of the internal fan 1. The opening of the freezer compartment damper 2 is adjusted by the temperature detected by the freezer compartment thermistor 16. In addition, each room damper is installed in an air passage extending from the cooler 22 to each room, and there is no air passage from each damper to each room other than the respective room. The blown cool air is returned from the cool air return port of each room to the cooler 22 via the return air path, and is cooled from each return port unless there is a room forming an air path in series with another independent room. There is no air path other than the air path connecting the respective chambers and the cooler 22 up to the vessel 22. In the present embodiment, the vegetable room 43 and the refrigeration room 39 have an air path in series, and the return air path of the refrigeration room 39 also serves as the blow-out air path of the vegetable room 43. In this way, the airflow path may be configured in series, and the room cooled by the return airflow path of the other room may not have the damper. In the present embodiment,
The cooler 22 is installed on the back of the freezer compartment 44, below the in-compartment fan 1, but may be located at another position. Compressor 2
3 is 0N by the thermistor of the freezing room 44 and the room of the freezing setting.
-0FF is controlled, but when the temperature of each of the other chambers becomes higher than the predetermined temperature, the compressor 23 and the in-compartment fan 1 are driven irrespective of the temperatures of the freezing room 44 and the room in the freezing setting. .

When the freezing compartment 44 is sufficiently cooled, the compressor 2
When the refrigerator 3 is stopped and the freezer compartment damper 2 is closed, the refrigerator compartment damper 5 is opened, the fan 1 in the refrigerator is turned on, and the refrigerator compartment 39 is turned on.
To cool. When the freezer compartment 44 is being cooled, the refrigerator compartment damper 5 is closed. In normal operation, the temperature of the cooler 22 is:
The average is about -27 ° C., which is a temperature of about −16 ° C., which is sufficient for cooling the refrigerator compartment 39 even immediately before the start of the operation of the compressor 23. In the present invention, since the freezer compartment 44 has a damper, by closing the freezer compartment damper 2, even when the internal fan 1 is driven, cool air does not flow into the freezer compartment 44 and the compressor 23 is stopped. Even in this case, the refrigerator compartment 39 can be sufficiently cooled. Further, during the operation of the compressor 23, the refrigerator compartment damper 5 is closed and the ventilation to the refrigerator compartment 39 is not performed, so that the amount of the cool air blown to each compartment including the freezing compartment 44 is increased, and the cooling speed is improved. , Compressor 23
Operation time is reduced.

As described above, since the capacity of the compressor is variable, rapid cooling and the like can be performed. In addition, since the number of rotations of the cool air fan inside the refrigerator is variable, an appropriate air volume can be sent to each room. In addition, when a flow rate control means for controlling the flow rate of the refrigerant is provided, a sufficient flow rate of the refrigerant is ensured. still,
It is preferable that the capacity of the compressor and the fan in the refrigerator be variable in two or more stages.

As described above, since the damper in the air passage is provided adjacent to the cooler, the space efficiency is improved. In addition, since a heater for preventing icing is provided around the drive unit of the freezer compartment damper or the switching compartment damper capable of switching to the freezer compartment temperature, sufficient defrosting can be performed.

FIG. 4 is a schematic diagram showing control according to the first embodiment of the present invention. In the figure, TF is the freezer compartment thermistor detected temperature, TF 'is the compressor ON temperature, TF "is the compressor OFF temperature, TR is the refrigerator compartment thermistor detected temperature, T
R 'is the refrigerator compartment damper open temperature, and TR''is the refrigerator compartment damper closed temperature. The temperature control of the refrigerator will be described. In step 1 (hereinafter referred to as S1), the freezer compartment thermistor detected temperature TF is compared with the compressor ON temperature TF ', and if TF ≧ TF' is YE
In the case of S, the process proceeds to S2, and in the case of NO, the process proceeds to S3. S2
To turn on the compressor, turn on the internal fan, open the F damper, proceed to S6, close the R damper, and return to the start. S
At 3, the freezer compartment thermistor detected temperature TF and compressor OFF
The temperature TF '' is compared, and if TF ''<TF is YES, S4
Proceed to S5, and if the compressor is ON, proceed to S5.
Proceed to and return to the start. If the compressor is off at S5, the process proceeds to S9. In S3, if TF ''<TF is NO, the process proceeds to S7, and the process directly proceeds to S8, where the compressor is turned off, the internal fan is turned off, the F damper is closed, and the process proceeds to S9. If TR <TR '' is YES in S9, the process proceeds to S10, where the compressor is turned off, the internal fan is turned off, the R damper is closed, and the process returns to the start. If TR <TR ″ is NO in S9, S11
Then, turn off the compressor, turn on the internal fan, open the R damper, and return to the start.

The solid line graph in FIG. 5 shows the temperature state of the refrigerator compartment and the freezer compartment, the opening / closing of each compartment damper,
FIG. 5 is a schematic diagram showing ON-OFF of the compressor 23, and a dotted line graph in FIG. 5 is a conventional technique, and shows a comparison between them.

Embodiment 2 FIG. FIG. 6 is a schematic diagram illustrating a control method according to the second embodiment of the present invention. In the figure, t is the time from the start of quenching, t 'is the quenching end time, T is the quench chamber thermistor detected temperature, T' is the quench chamber damper closed temperature, TF is the freezer compartment thermistor detected temperature, and TF 'is the freezer compartment damper open. Temperature. The control of the refrigerator will be described. When the rapid cooling is instructed, the rapid cooling is started (Step 21, hereinafter referred to as S21).
And proceeds to S22. If t <t 'is NO in S22, rapid cooling ends. If t <t 'is YES, the process proceeds to S23, where the quenching chamber turbine is opened, the compressor is turned on, the fan in the refrigerator is turned on, and the process proceeds to S24. If T> T 'is YES in S24, the process proceeds to S25, where the quenching chamber damper is opened, the compressor is turned on, the internal fan is turned on, and the process proceeds to S26. T at S24>
When T 'is NO, the process proceeds to S28, the quenching chamber damper is closed, and the process proceeds to S29. If TF ≧ TF ′ is YES in S29, the process proceeds to S31 to open the F damper, and returns to before S22. When TF ≧ TF ′ is NO in S29, the process proceeds to S30, the F damper is closed, the compressor is turned off, the internal fan is turned off, and the process returns to before S24. TF ≧ TF ′ is YE in S26
In the case of S, the process proceeds to S27 to close the F damper, and returns to before S22. When TF ≧ TF ′ is NO in S26, the process proceeds to S32 to open the F damper, and returns to before S22.

When the temperature of each chamber is lower than the set temperature, the compressor 2
When rapid cooling is performed in a room other than the freezing room 44 when both the cooling fan 3 and the inside fan 1 are OFF, the compressor 23 and the inside fan 1 are driven, and the damper of the room instructed for the quick cooling is opened. And the cooling is started. When the freezing room 44 also has a damper, the freezing room damper 2 is closed while the freezing room 44 is sufficiently cooled, so that the freezing room 44 is closed.
It is possible to prevent the blowing of cold air more than necessary, and it is possible to blow cold air only as necessary to the intended room,
Cooling speed is improved. Here, the opening of the freezer compartment damper is preferably adjustable in two or more stages.

Further, since the cooling speed of the designated room is improved, when the temperature of the designated room becomes lower than a predetermined temperature during the rapid cooling, the compressor 23 and the inside of the refrigerator are detected by the temperature detected by each room thermistor. By controlling the ON / OFF of the fan 1 and the opening degree of the damper, it is possible to prevent the specified room from being excessively cooled and to reduce the operation time of the compressor 23.

If cooling is required in a room other than the one in which rapid cooling was instructed, the dampers in each room may be opened or the degree of opening may be adjusted. The solid line graph in FIG. 7 shows the temperature states of the quenching room and the freezing room, the opening and closing of each room damper,
FIG. 7 is a schematic diagram of ON-OFF of the compressor 23, and a dotted line graph of FIG. In addition,
TF, TF ', and F dampers in the figure are omitted because they are the same in each room other than the freezing room.

Embodiment 3 FIG. 8 is a schematic diagram illustrating a control method according to the third embodiment of the present invention. In the figure, t is a time from defrost heater OFF, t 'is a normal control start time after defrost heater OFF, Tdef is a time from defrost heater ON, and Tdef' is a defrost heater energization end time. The control of the refrigerator will be described. Start defrosting (Step 4
1, hereinafter referred to as S41), and then proceeds to S42. At S42, the defrost heater is turned on, all dampers are closed, the compressor is turned off, and the internal fan is turned off, and the process proceeds to S43. Tdef ≧ Td in S43
When ef ′ is NO, the process returns to S42, and when ef ′ is YES, S44
Proceed to. In S44, the defrost heater is turned off, the refrigerator compartment damper is opened, the compressor is turned off, and the fan in the refrigerator is turned on, and the process proceeds to S45.
If Tdef ≧ Tdef ′ is NO in S45, the process returns to S42, and if YES, the process proceeds to S44. In S44, the defrost heater is turned off, the refrigerator compartment damper is opened, the compressor is turned off, the internal fan is turned on, and the process proceeds to S45. T ≧ t ′ in S45
If the answer is NO, the process returns to S44, and if the answer is YES, the process proceeds to S46 to resume the normal control.

During the defrosting operation, the dampers of the respective compartments including the freezing compartment 44 are closed, and the compressor 23 and the internal fan 1 are turned off.
Then, after the defrosting, the refrigerator fan damper 5 and the damper 3 of the switching room set in the temperature zone are opened to open the fan 1 in the refrigerator until the defrosting thermistor reaches a predetermined temperature.
To ON. Thereafter, when a predetermined time elapses, the ON / OFF of the compressor 23 and the internal fan 1 and the opening of each damper are adjusted based on the detected temperature of the thermistor in each room. This is the cooler 2 which contains the moisture generated by performing defrosting.
Air having an appropriate humidity near 2 is sent only to the refrigerator compartment 39 and the switching compartment 42 set in the temperature zone thereof to prevent the food in each compartment from drying, and the excess in the freezing compartment 44. In addition to preventing moisture from entering, the rise in temperature of the freezing compartment 44 due to defrosting can be minimized, and the cooling speed after defrosting can be increased. In addition, refrigerator room 3
The vegetable room may be humidified in addition to the switching room 42 set to 9 and the temperature zone. In addition, since a deodorizing device is provided in the cooling chamber, in the closed cooling chamber in which each damper is closed during defrosting,
The emitted odor generated by defrosting can be efficiently adsorbed and decomposed.

Embodiment 4 FIG. FIG. 9 is a schematic diagram illustrating a control method according to the fourth embodiment of the present invention. In the figure, TF is the freezer compartment thermistor detection temperature, and Tf 'is the freezer compartment damper open temperature. The control of the refrigerator will be described. The rapid ice making is started, the freezer compartment is shifted up (Step 51, hereinafter referred to as S51), and the process proceeds to S52. TF ≧ Tf ′ is YE in S52
In the case of S, the process proceeds to S53, the freezer damper is opened, and the process proceeds to S55. If TF ≧ Tf ′ is NO, the flow proceeds to S54, closes the freezer damper, and proceeds to S55. If the quick ice making stop time elapses or if the quick ice making stop instruction is YES in S55, the process proceeds to S56, and the quick ice making ends. If NO, the process returns to before S52.

When an instruction for quick ice making is given, the temperature of the freezing compartment 44 is set within a range that does not adversely affect the preservation of food.
Freezer damper 2 so that the set temperature is higher than normal
Adjust the opening of. As a result, the amount of cool air blown into the ice making chamber 41 can be increased, and the ice making speed can be increased.

If cooling is required in a room other than the ice making room 41, the dampers in each room may be opened or the opening degree may be adjusted according to the temperature condition.

Embodiment 5 FIG. 10 is a perspective view of a freezer compartment damper according to the fifth embodiment. In the figure,
Reference numeral 2 denotes a freezer compartment damper, 45 denotes a baffle portion of the freezer compartment damper 2, and a heater 46 is mounted around the baffle portion 45 of the freezer compartment damper 2. As a result, it is possible to prevent the moisture in the air having an appropriate humidity existing around the air path side of the freezer compartment damper 2 during the defrosting and immediately after the defrosting from being frozen, thereby preventing the driving of the freezer compartment damper 2 from being adversely affected.

The shape and mounting position of the heater 46 may be other than those shown in FIG. 10, and can be arbitrarily changed so as not to affect the driving of the damper.

The energization of the heater 46 can sufficiently raise the temperature of the damper only during defrosting. The heater duty ratio and rating can be arbitrarily changed.

Embodiment 6 FIG. From the cooler 22 to the freezer compartment 44
A bypass air path 50 connecting the cooler side of the freezer compartment damper 2 and the freezer chamber side is provided inside the air path to the freezer compartment. This is because the moisture in the air of moderate humidity present around the air passage side of the freezer compartment damper 2 freezes during and immediately after the defrosting and the freezer compartment damper 2 is frozen.
When the freezer compartment damper 2 is not opened even when the heater 46 shown in the fifth embodiment is used and the freezer compartment damper 2 is not opened, the temperature of the freezer compartment 44 is maintained at or below the maximum ice crystal formation zone to prevent the freezing compartment from being driven. 44 can be minimized.

The bypass air passage 50 may have any shape as long as the freezing room temperature does not become higher than the maximum ice crystal zone even when the freezing room damper 2 is closed.

Embodiment 7 FIG. The freezer compartment damper 2 may be other than the one having the baffle 45 in one opening and driving it by one motor (hereinafter referred to as a single damper) as shown in the fifth embodiment. Its shape and configuration can be changed. 11 and 12
Shows a modification of the freezer compartment damper. The two non-adjacent openings 49a, 49c are baffles 45a, 45b.
and two baffles 45 a and 45 c are driven by one motor 47. The baffle 45c is not adjacent to the motor 47 and has an opening 49b between the baffle 45c.
A shaft 48 for transmitting the rotation of the motor 47 is provided between the motor 47 and the motor 47. This is necessary when the air volume needs to be adjusted in two non-adjacent air paths, but does not need to be adjusted in the air path sandwiched between the air paths, or when it is better to adjust the air volume at positions other than the position of the main damper in the air path configuration. Thus, a refrigerator can be manufactured at a lower cost than when two single dampers are used.

According to the present invention, a dedicated damper is provided in front of the cool air outlet of all the independent rooms having a freezing room and independent doors and having parallel air passages, and high-precision temperature control by optimizing the air volume by controlling each damper. Energy saving is realized.

In the present invention, a dedicated damper is provided in front of the cool air outlet of the freezing room, so that the temperature can be controlled with higher precision than in the conventional technology, and the cool air is blown to the freezing room more than necessary. Since the operation time of the compressor is shortened by increasing the cooling speed of each chamber, the power consumption is improved.

Further, since only the room for which rapid cooling is designated can be cooled, the cooling speed during rapid cooling increases. Further, by controlling the compressor, the internal fan, and the damper based on the thermistor detection temperature when the room designated for rapid cooling reaches a predetermined temperature, it is possible to prevent the designated room from being excessively cooled. In addition, the operation time of the compressor is reduced, and the power consumption is improved.

Further, by closing all the dampers at the time of defrosting, the air in the vicinity of the cooler heated by the defrosting heater is prevented from flowing into the freezing compartment, so that the temperature rise of the freezing compartment during defrosting is minimized. The defrosting time can be further reduced. This makes it possible to shorten the pre-cooling time before defrosting as compared with the conventional technology, and to increase the cooling speed of the freezing compartment after defrosting, so that the operation time of the compressor before and after defrosting is reduced. And power consumption is improved. In addition, the effect on foodstuffs by increasing the room temperature is improved.

When defrosting, all the dampers are closed, the fan in the refrigerator is turned off, and after defrosting, the compressor is turned off and the fan in the refrigerator is turned on by opening the dampers in the refrigerating room and the switching room set to the temperature zone. By including the moisture generated by performing the defrost, the air having an appropriate humidity near the cooler, is limited to the refrigerator compartment and the switching room set in the temperature zone, and blows air, and in each of these compartments It is possible to prevent the food from drying and keep the food fresher than before.

When a quick ice making instruction is given,
By adjusting the opening of the freezer compartment damper so that the temperature of the freezer compartment does not adversely affect food preservation so that the set temperature is higher than normal, the amount of cold air blown to the ice making compartment increases. Ice making time increases. As a result, the ice making time is reduced as compared with the related art, so that the operation time of the compressor is shortened and the power consumption is improved.

Further, since the freezer compartment damper has a heater around the baffle portion, moisture in the air of moderate humidity existing around the air passage side of the freezer compartment damper baffle portion freezes during and immediately after defrosting, and the freezer compartment damper freezes. It is possible to prevent the driving of the damper from being adversely affected.

Further, by providing a bypass air passage connecting the cooler side of the freezer compartment damper and the freezer compartment inside the air passage from the cooler to the freezer compartment, the wind in the freezer compartment damper baffle portion during and immediately after the defrosting is provided. Even if the moisture in the air of moderate humidity existing around the roadside freezes and the freezer compartment damper does not open even with the heater shown in Embodiment 5, the freezer compartment temperature is kept at the maximum ice temperature. By keeping it below the crystal formation zone, it is possible to minimize the effect on the food in the freezer.

Also, two baffles are provided in two non-adjacent openings, and the two baffles are driven by one motor. One of the two baffle openings is not adjacent to the motor and has two baffles. By using a damper having an opening without a baffle between two openings, it is necessary to adjust the air volume in two non-adjacent air channels, but it is not necessary to adjust the air volume in the air channel sandwiched between them. In the case where it is better to adjust the air flow at a position other than the position of the main damper on the road configuration, the refrigerator can be manufactured at a lower cost than using two single dampers.

[0051]

The refrigerator according to the present invention has two or more storage compartments including a freezing compartment and a refrigerating compartment, and air passages from a cooler for supplying cool air to the freezing compartment and the refrigerating compartment are arranged in parallel. The cooling chamber is provided with a damper inside the air passage from the cooling chamber to the freezing chamber, so that the temperature of the freezing chamber can be controlled with high precision, and it is possible to prevent the cooling air from being blown to the freezing chamber more than necessary. Since the operation time of the compressor is shortened by increasing the cooling speed of the other storage chambers, the power consumption is improved.

Further, since a damper is provided in the air passage from the cooler to each of the parallel chambers, the temperature of each chamber can be controlled with high accuracy.

Further, since the thermistor for damper control is provided in each chamber to which the cool air is supplied via the damper in each air passage, the temperature can be controlled with higher accuracy.

Since the capacity of the compressor is variable, rapid cooling and the like are possible.

Further, since the number of revolutions of the cool air blower inside the refrigerator is variable, an appropriate air volume can be sent to each room.

Further, since the flow rate control means for controlling the flow rate of the refrigerant is provided, a sufficient flow rate of the refrigerant is ensured.

Since the damper in the air passage is provided adjacent to the cooler, the space efficiency is improved.

Further, since a heater for preventing icing is provided around the drive section of the damper, defrosting can be performed.

The operation of the freezer compartment damper or the switching compartment damper which can be switched to the freezer compartment temperature by the heater does not hinder the operation.

Also, since means for enabling the user to arbitrarily give an instruction for quick cooling is provided, the user can perform quick refrigeration when necessary.

Further, all the dampers are closed during defrosting,
There is no temperature rise in each room.

Further, since the refrigerating compartment damper is opened and the fan in the refrigerator is driven for a certain period of time after the defrosting or until the defrosting thermistor reaches a predetermined temperature, each chamber can be humidified.

Since a deodorizing device is provided in the cooling chamber, the odor can be efficiently adsorbed and decomposed during defrosting.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a flow of cool air according to a first embodiment of the present invention.

FIG. 2 is an overall front view of the refrigerator according to the first embodiment of the present invention.

FIG. 3 is a side sectional view of the refrigerator according to the first embodiment of the present invention.

FIG. 4 is a schematic diagram illustrating control according to the first embodiment of the present invention.

FIG. 5 is a schematic view showing each room temperature, opening and closing of each damper, and ON-OFF of a compressor in Embodiment 1 of the present invention.

FIG. 6 is a schematic diagram illustrating control according to a second embodiment of the present invention.

FIG. 7 is a schematic diagram showing each room temperature, opening and closing of each damper, and ON-OFF of a compressor in Embodiment 2 of the present invention.

FIG. 8 is a schematic diagram illustrating control according to a third embodiment of the present invention.

FIG. 9 is a schematic diagram illustrating control according to a fourth embodiment of the present invention.

FIG. 10 is a perspective view of a freezer compartment damper according to a fifth embodiment of the present invention.

FIG. 11 is a perspective view of a freezer compartment damper according to a seventh embodiment of the present invention.

FIG. 12 is a top view of a freezer compartment damper according to a seventh embodiment of the present invention.

FIG. 13 is a schematic diagram showing a conventional flow of cool air.

[Explanation of symbols]

1 Internal fan, 2 Freezer room damper, 3 Switching room damper, 4 Ice making room damper, 5 Refrigeration room damper, 6
Slide room damper, 7 Freezer room air passage (blowing out),
8 switching room air path (blowing out), 9 ice making room air blowing (blowing out), 10 refrigeration room air blowing (blowing out), 11
Slide room air path (blower), 12 ice room blower outlet, 13 switching room blower outlet, 14 slide room blower outlet, 15 refrigeration room blower outlet, 16 freezer room thermistor, 17 vegetable room thermistor, 18 ice making room thermistor, 19 switching room Thermistor, 20 Slide room thermistor, 21 Refrigerator room thermistor, 2
2 cooler, 23 compressor, 24 defrost heater,
25 Vegetable room floorboard, 26 Switching room / ice room floorboard,
27 Refrigerator room floorboard, 28 inner box, 29 outer box, 3
0 Refrigerator room door, 31 Ice making room door, 32 Switching room door,
33 vegetable room door, 34 freezer room door, 35 refrigerator room shelf a, 36 refrigerator room shelf b, 37 refrigerator room shelf c, 3
8 refrigerator room shelf d, 39 refrigerator room, 40 slide room, 41 ice making room, 42 switching room, 43 vegetable room,
44 freezer, 45 baffle, 46 heater,
47 motor, 48 shaft, 49 damper opening, 50 bypass air passage.

Continuing on the front page (72) Inventor Katsumasa Sakamoto 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation (72) Inventor Masao Araki 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Inside the corporation

Claims (13)

[Claims] An air path from a cooler that supplies cold air to the freezing room and the cold room is provided in parallel with two or more storage rooms including a freezing room and a cold room. A refrigerator having a damper inside an air passage to the freezer. 2. The refrigerator according to claim 1, further comprising a damper in an air passage from the cooler to each of the parallel rooms. 3. The refrigerator according to claim 1, further comprising a thermistor for damper control in each chamber to which cool air is supplied via a damper in each air passage. 4. The refrigerator according to claim 1, wherein the capacity of the compressor is variable. 5. The refrigerator according to any one of claims 1 to 4, wherein the number of rotations of the cool air blower inside the refrigerator is variable. 6. The refrigerator according to claim 1, further comprising a flow rate control means for controlling a flow rate of the refrigerant. 7. The refrigerator according to claim 1, wherein a damper in the air passage is provided adjacent to the cooler. 8. The refrigerator according to claim 7, wherein a heater for preventing icing is provided around a driving section of the damper. 9. The refrigerator according to claim 7, wherein the damper is a freezer room damper or a switch room damper that can be switched to a freezer room temperature. 10. The refrigerator according to claim 1, further comprising means for allowing a user to arbitrarily give an instruction for rapid cooling. 11. The refrigerator according to claim 1, wherein all dampers are closed during defrosting. 12. The refrigerator according to claim 1, wherein the refrigerating compartment damper is opened and a fan in the refrigerator is driven for a predetermined time after the defrosting or until the defrosting thermistor reaches a predetermined temperature. Refrigerator. 13. The refrigerator according to claim 1, wherein a deodorizing device is provided in the cooling chamber.