JP4357448B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator including a temperature switching chamber that can be switched to a desired room temperature by a user.

  In recent years, where the living environment has changed significantly, more and more families have different times for their families to eat. For this reason, in order to keep the heated food warm, a heat insulation box or a heat storage container is used. Thereby, the effort which cooks many times can be saved.

On the other hand, Patent Document 1 discloses a refrigerator provided with a temperature switching chamber in addition to a freezer compartment and a refrigerator compartment. This refrigerator includes a damper device that opens and closes a passage of cool air sent to the temperature switching chamber, and a heater that raises the temperature of the temperature switching chamber. Thereby, the room temperature of the temperature switching chamber can be switched to a desired low temperature range such as freezing, refrigeration, partial, chilled, etc. according to the user's application.
Japanese Patent Laid-Open No. 10-288440

  However, when a heat insulation box or a storage container is used to keep the heated food warm, there is a problem that it is difficult to secure an installation place and a problem that a user's economic burden is increased. In addition, there is a problem in that it requires a complicated operation of transferring the food and is not convenient.

  An object of the present invention is to provide a highly convenient refrigerator that reduces the burden on the user and makes it easy to secure a place.

Refrigerator of the present invention in order to achieve the above object, the temperature switchable compartment can be switched and freezing compartment to store frozen savings built was the room temperature to the high temperature side which kept the heat food with a low temperature side to a reservoir for cold storage When a cooler for generating cold air, and freezing chamber fan for sending the cold air generated by the cooler to the freezing chamber, a front Stories temperature switching compartment the temperature switching compartment upon the hot side to the cooler A temperature switching chamber damper that closes the passage of the cooling chamber , and provided so as not to overlap when the freezing chamber blower and the temperature switching chamber are projected from the front of the refrigerator main body, and the freezing chamber blower of the temperature switching chamber Provided on the back side of the surrounding space, the number of rotations of the freezer compartment fan when the temperature switching chamber is on the high temperature side is smaller than the number of rotations of the freezer compartment fan when the temperature switching chamber is on the low temperature side It is characterized by According to this structure, the cold air produced | generated by the cooler is sent to a freezer compartment by the drive of a freezer compartment fan, and a freezer compartment is cooled. When the temperature switching chamber is switched to the high temperature side, the temperature switching chamber damper is closed and the intrusion of cold air is blocked. At this time, the rotation speed of the freezer compartment fan is controlled to be smaller than when the temperature switching chamber is set to the low temperature side.

Further, the present invention provides a refrigerator having the above-described configuration, a refrigerator compartment for storing stored items in a refrigerator, a refrigerator compartment fan for sending cold air branched from an exhaust side of the refrigerator compartment fan to the refrigerator compartment, and an exhaust side of the refrigerator compartment fan And a temperature switching chamber blower for sending the cold air branched from the temperature switching chamber to the temperature switching chamber. According to this structure, the cold air produced | generated by the cooler is sent to a freezer compartment by the drive of a freezer compartment fan, and a freezer compartment is cooled. When the refrigerator compartment fan is driven, the cold air is branched from the exhaust side of the refrigerator compartment fan and guided to the refrigerator compartment, thereby cooling the refrigerator compartment. When the temperature switching chamber is set to the low temperature side, the temperature switching chamber damper is opened and the temperature switching chamber blower is driven. Thereby, cold air branches from the exhaust side of the freezer compartment blower, is led to the temperature switching chamber, and the temperature switching chamber is cooled. When the temperature switching chamber is switched to the high temperature side, the temperature switching chamber damper is closed and the intrusion of cold air is blocked. At this time, the rotation speed of the freezer compartment fan is controlled to be smaller than when the temperature switching chamber is set to the low temperature side.

In the refrigerator having the above-described configuration, the present invention further includes a temperature switching chamber blower that sends cold air branched from the exhaust side of the freezing chamber blower to the temperature switching chamber, and the freezing chamber blower is provided in the vicinity of the temperature switching chamber. It is characterized by that.

The refrigerator of the present invention can switch the room temperature between a refrigerator compartment for storing stored items in a refrigerator, a freezing chamber for storing stored items in a frozen state, a low temperature side for storing stored items in a cold state, and a high temperature side for keeping heated foods warm. A temperature switching chamber, a cooler for generating cold air, a freezer compartment fan for sending the cool air produced by the cooler to the freezer compartment, and a cool air branching from the exhaust side of the freezer compartment fan for delivering to the refrigerator compartment A refrigerating chamber blower, a temperature switching chamber blower that sends cold air branched from the exhaust side of the freezer compartment blower to the temperature switching chamber, and the temperature switching chamber and the cooler when the temperature switching chamber is set to a high temperature side. A temperature switching chamber damper that closes the passage of the cooling chamber, and the number of rotations of the freezer compartment fan when the temperature switching chamber is on the high temperature side is the rotation of the freezer compartment fan when the temperature switching chamber is on the low temperature side both to be smaller than the number It is characterized in that the rotational speed of the cooling chamber blower when the temperature switching compartment to the high temperature side is smaller than the rotational speed of the cooling chamber blower when the temperature switching compartment to the low temperature side.

In the refrigerator having the above-described configuration, the temperature switching chamber damper is closed and air in the temperature switching chamber on the high temperature side is circulated by the temperature switching chamber blower.
In the refrigerator configured as described above, the rotation speed of the temperature switching chamber blower when the temperature switching chamber is set to the high temperature side is higher than the rotation speed of the temperature switching chamber blower when the temperature switching chamber is set to the low temperature side. It is also characterized by being large.

Further, the present invention provides the refrigerator having the above-described configuration, wherein the passage is a cold air passage communicating the temperature switching chamber and the cooler through a ventilation path having a heat insulating wall, and the temperature switching chamber damper is disposed in the ventilation path. And the temperature switching chamber damper closes the ventilation path when the temperature switching chamber is set to a high temperature side .

  According to the present invention, since the temperature switching chamber capable of switching the room temperature between the low temperature side for storing the refrigerated or frozen storage and the high temperature side for keeping the heated food is provided, the economy of the user for keeping the heated food warm It is possible to provide a highly convenient refrigerator that reduces the burden on the user and makes it easy to secure a place. Moreover, since the rotation speed of the freezer compartment blower is reduced when the temperature switching chamber is switched to the high temperature side, the cooling capacity can be lowered according to the decrease in the cooling volume. Therefore, waste of electric power can be prevented.

  Further, according to the present invention, when the temperature switching chamber is switched to the high temperature side, the number of rotations of the refrigerator compartment fan is reduced, so that overcooling of the refrigerator compartment can be prevented.

  Further, according to the present invention, since the air in the temperature switching chamber on the high temperature side is circulated by the temperature switching chamber blower, the temperature switching chamber can be made to have a uniform temperature.

  Further, according to the present invention, when the temperature switching chamber is switched to the high temperature side, the rotational speed of the temperature switching chamber blower is increased, so that the air in the temperature switching chamber can be rapidly circulated to make the temperature uniform. Moreover, since the rotation speed of a freezer compartment fan is made small, the increase in the noise by having increased the rotation speed of the temperature switching room fan can be prevented.

  Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are a front view and a right side view showing a refrigerator according to one embodiment. The refrigerator 1 is provided with a refrigerator compartment 2 in the upper stage, and a temperature switching room 3 and an ice making room 4 in the middle stage. A vegetable room 5 and a freezer room 6 are arranged in the lower stage of the refrigerator 1.

  The refrigerating room 2 has a double door and stores stored items in a refrigerator. The temperature switching chamber 3 is provided on the left side of the middle stage, and the room temperature can be switched by the user. The ice making chamber 4 is provided on the right side of the middle stage and performs ice making. The vegetable room 5 is provided on the lower left side and is maintained at a temperature suitable for vegetable storage (about 8 ° C.). The freezer compartment 6 is provided on the lower right side and communicates with the ice making compartment 4 to store the stored items in a frozen state.

  FIG. 3 is a right side sectional view of the refrigerator 1. The freezing compartment 6 and the ice making compartment 4 are provided with a storage case 11 for storing stored items. A similar storage case 11 is also provided in the vegetable room 5 and the temperature switching room 3. The refrigerator compartment 2 is provided with a plurality of storage shelves 41 on which stored items are placed. A storage pocket 42 is provided on the door of the refrigerator compartment 2. Thereby, the usability of the refrigerator 1 is improved. A chilled chamber 23 maintained at a chilled temperature zone (about 0 ° C.) is provided in the lower part of the refrigerator compartment 2.

  A cold air passage 31 is provided behind the freezer compartment 6, and a cooler 17 connected to the compressor 35 is disposed in the cold air passage 31. A cold air passage 32 communicating with the cold air passage 31 is provided behind the refrigerator compartment 2. A refrigerant such as isobutane is circulated by driving a compressor 35 connected to a condenser and an expander (both not shown) to operate a refrigeration cycle. Thereby, the cooler 17 on the low temperature side of the refrigeration cycle and the air flowing through the cold air passage 31 exchange heat to generate cold air.

  Moreover, the freezer compartment fan 18 and the refrigerator compartment fan 28 are each arrange | positioned in the cold air | gas channel | paths 31 and 32. FIG. As will be described in detail later, the cold air generated by the cooler 17 is supplied to the freezer compartment 6, the ice making chamber 4, the chilled chamber 23, and the temperature switching chamber 3 through the cold air passage 31 by driving the freezer compartment fan 18. The cold air is supplied to the refrigerator compartment 2 and the vegetable compartment 5 through the cold passage 32 by driving the refrigerator compartment fan 28.

  FIG. 4 is a right side sectional view showing the temperature switching chamber 3. The upper and lower surfaces of the temperature switching chamber 3 are insulated from the refrigerator compartment 2 and the vegetable compartment 5 by heat insulation walls 7 and 8. The side surface of the temperature switching chamber 3 is insulated from the ice making chamber 4 and the freezing chamber 6 by a heat insulating wall (not shown). The front surface of the temperature switching chamber 3 can be opened and closed by a rotating door 9. The back surface of the temperature switching chamber 3 is covered with a back plate 33.

  An inlet 33a through which air flows into the temperature switching chamber 3 is provided at the upper part of the back plate 33, and an outlet 33b through which air flows out from the temperature switching chamber 3 is provided at the lower part. Further, temperature sensors 24 and 16 for detecting the temperature in the temperature switching chamber 3 are provided in the vicinity of the inlet 33a and the outlet 33b.

  An introduction ventilation path 12 is provided behind the back plate 33 and the heat insulating wall 10 that forms the outer wall. The introduction ventilation path 12 is provided with a temperature switching chamber discharge damper 13 (see FIG. 5), and communicates with the cold air passage 31 to guide the cold air generated in the cooler 17 (see FIG. 3) to the temperature switching chamber 3. Moreover, the cool air path between the cooler 17 and the inflow side of the temperature switching chamber 3 is opened and closed by opening and closing the temperature switching chamber discharge damper 13, and the amount of air flowing into the temperature switching chamber 3 from the introduction ventilation path 12 is adjusted by the opening and closing amount. Is done.

  In the introduction ventilation path 12, a temperature switching chamber blower 14 is provided between the temperature switching chamber discharge damper 13 and the inflow port 33a. The cold air in the cold air passage 31 is easily guided to the temperature switching chamber 3 by driving the temperature switching chamber blower 14.

  A temperature switching chamber return damper 20 is provided behind the outlet 33b. The temperature switching chamber return damper 20 has openings 20a and 20b, and has a baffle 20c that opens and closes the other by rotation. When the opening 20b is opened, the air flowing out of the temperature switching chamber 3 is guided to the cooler 17 through the return ventilation path 19 (see FIG. 5).

  When the opening 20a is opened, the air flowing out from the temperature switching chamber 3 is guided to the intake side of the temperature switching chamber blower 14, and the cool air path between the outflow side of the temperature switching chamber 3 and the cooler 17 is closed. Therefore, the air in the temperature switching chamber 3 can be circulated as shown by the arrow F by driving the temperature switching chamber blower 14, closing the opening 20 b and closing the temperature switching chamber return damper 20. Note that the temperature switching chamber blower 14 may be provided in the temperature switching chamber 3.

  A heater 15 is provided behind the inlet 33 a of the temperature switching chamber 3. The heater 15 is formed of a heat radiation type glass tube heater, and raises the temperature of the temperature switching chamber 3 by radiant heat released through the back plate 33. The temperature switching chamber blower 14 is arranged so as to blow toward the surface of the heater 15. Thereby, the surface temperature of the heater 15 can be lowered and safety can be improved. Further, the outlet 33b is provided with a temperature fuse 30 that cuts off the energization of the heater 15 when the temperature reaches a predetermined temperature.

  In the temperature switching chamber 3, a drawer-type storage case 11 on which stored items are placed is arranged. A temperature sensor 34 is provided on the bottom surface of the storage case 11. Thereby, the temperature of the stored item placed on the storage case 11 can be accurately detected.

  FIG. 5 is a front sectional view of the vicinity of the middle stage of the refrigerator 1. The cold air passage 31 behind the freezer compartment 6 opens at the upper front of the freezer compartment fan 18, and air is sent out to the ice making chamber 4 by the freezer compartment fan 18. A freezer compartment damper 22 is provided below the freezer compartment 6 that communicates with the ice making compartment 4. A return ventilation path 21 (see FIG. 3) is provided in the lower rear part of the freezer compartment 6 to guide air to the cooler 17 via the freezer damper 22 and return to the cool air passage 31. The amount of air flowing out of the freezer compartment 6 is adjusted by opening and closing the freezer compartment damper 22.

  The upper part of the cold air passage 31 communicates with the cold air passage 32 via the refrigerator compartment damper 27. Further, the cold air passage 31 is branched and communicates with the chilled chamber 23 via the chilled chamber damper 25 and also communicates with the introduction ventilation path 12 (see FIG. 4) as described above.

  A refrigerator outlet (not shown) is opened at the lower back of the refrigerator compartment 2 and a vegetable compartment inlet (not shown) is provided in the vegetable compartment 5. The refrigerator compartment outlet and the vegetable compartment inlet are connected by a passage (not shown) passing through the back surface of the temperature switching chamber 3 so that the refrigerator compartment 2 and the vegetable compartment 5 communicate with each other.

  The temperature switching chamber return damper 20 is provided in the lower left part of the temperature switching chamber 3. Behind the temperature switching chamber 3 and the vegetable chamber 5 is provided a return ventilation path 19 that extends downward from the temperature switching chamber return damper 20 and communicates with the return ventilation path 21 (see FIG. 3). As described above, the air in the temperature switching chamber 3 is guided to the cooler 17 through the return ventilation paths 19 and 21 by opening the opening 20b (see FIG. 4) of the temperature switching chamber return damper 20. A vegetable room outlet (not shown) communicating with the return ventilation path 19 is provided on the back of the vegetable room 5.

  FIG. 6 is a cold air circuit diagram showing the flow of cold air in the refrigerator 1. The freezer compartment 6, the refrigerator compartment 2, and the temperature switching chamber 3 are each arranged in parallel. Further, the ice making room 4 is arranged in series with the freezing room 6, and the chilled room 23 and the vegetable room 5 are arranged in series with the refrigerating room 2. The cold air generated by the cooler 17 is sent up to the ice making chamber 4 by raising the cold air passage 31 as shown by an arrow A (see FIG. 5) by driving the freezer compartment fan 18. The cold air sent to the ice making room 4 flows through the ice making room 4 and the freezing room 6 and flows out from the freezing room damper 22. And it returns to the cooler 17 via the return ventilation path 21. As a result, the ice making chamber 4 and the freezing chamber 6 are cooled.

  The cold air branched at the top of the cold air passage 31 on the exhaust side of the freezer blower 18 by the driving of the cold compartment blower 28 circulates through the cold air passage 32 through the cold room damper 27 as shown by an arrow B (see FIG. 5). And sent to the refrigerator compartment 2. Moreover, it is sent to the chilled chamber 23 as shown by an arrow C (see FIG. 5). These cold air flows through the refrigerator compartment 2 and the chilled compartment 23 and then flows into the vegetable compartment 5. The cold air flowing into the vegetable compartment 5 flows through the vegetable compartment 5 and returns to the cooler 17 through the return ventilation paths 19 and 21. Thereby, the inside of the refrigerator compartment 2 and the vegetable compartment 5 is cooled, and if it becomes preset temperature, the refrigerator compartment damper 27 and the chilled compartment damper 23 will be closed.

  Further, the cold air branched at the upper part of the cold air passage 31 on the exhaust side of the freezer compartment fan 18 by the drive of the temperature switching chamber blower 14 circulates through the introduction ventilation path 12 as shown by an arrow D (see FIG. 5), and the temperature It flows into the temperature switching chamber 3 through the switching chamber discharge damper 13. The cold air that has flowed into the temperature switching chamber 3 flows through the temperature switching chamber 3 and flows out of the temperature switching chamber return damper 20. And as shown to the arrow E (refer FIG. 5), it returns to the cooler 17 via the return ventilation path 19 and 21. FIG. Thereby, the inside of the temperature switching chamber 3 is cooled.

  As described above, the temperature switching chamber 3 can switch the room temperature by a user's operation. The operation modes of the temperature switching chamber 3 are wine (8 ° C.), refrigeration (3 ° C.), chilled (0 ° C.), soft freezing (−8 ° C.), and freezing (−15 ° C.) depending on the temperature zone. Provided.

  Thus, the user can store the refrigerated product at a desired temperature by refrigeration or refrigeration. The room temperature can be switched by changing the amount of opening of the temperature switching chamber discharge damper 13. For example, the heater 15 may be energized to switch the temperature from the freezing room temperature to the refrigerated room temperature. Thereby, it can switch to desired room temperature rapidly.

  Further, by energizing the heater 15, the temperature of the temperature switching chamber 3 can be switched from the low temperature side where the stored items are cooled and stored to the high temperature side where the cooked heated food is temporarily kept warm or cooked. Since the growth temperature of the main food poisoning bacteria is 30 ° C. to 45 ° C., the indoor temperature on the high temperature side is preferably set to 50 ° C. or more in consideration of the tolerance of the heater capacity, the temperature distribution in the temperature switching chamber 3, and the like. Thereby, propagation of miscellaneous bacteria can be prevented.

  Moreover, since the heat-resistant temperature of the general resin parts used for a refrigerator is 80 degreeC, when the room temperature of a high temperature side shall be 80 degrees C or less, it can implement | achieve cheaply. In addition, in order to sterilize food poisoning bacteria, for example, in the case of enterohemorrhagic E. coli (pathogenic E. coli O157), heating at 75 ° C. for 1 minute is required. Therefore, it is more desirable to set the indoor temperature on the high temperature side to 75 ° C. to 80 ° C.

The following are the test results on the sterilization of food poisoning bacteria at 55 ° C. In the initial state, E. coli 2.4 × 10 ³ CFU / mL, Staphylococcus aureus 2.0 × 10 ³ CFU / mL, Salmonella 2.1 × 10 ³ CFU / mL, Vibrio parahaemolyticus 1.5 × 10 ³ CFU / ML, Cereus 4.0 × 10 ³ CFU / mL. This test sample was heated from 3 ° C. to 55 ° C. over 40 minutes, kept at 55 ° C. for 3.5 hours, then returned from 55 ° C. to 3 ° C. over 80 minutes, and the amount of each bacterium was examined again. As a result, all the bacteria were reduced to a level of 10 CFU / mL or less (not detected). Therefore, even if the set temperature on the high temperature side of the temperature switching chamber 3 is 55 ° C., there is a sufficient sterilization effect.

  FIG. 7 is a flowchart showing the operation when the temperature switching chamber 3 is switched from the low temperature side to the high temperature side. When switching to the high temperature side, the temperature switching chamber discharge damper 13 (temperature switching chamber damper) is closed in step # 11. In step # 12, the opening 20b is closed by the baffle 20c of the temperature switching chamber return damper 20 (temperature switching chamber damper).

  In step # 13, the heater 15 is turned on. In step # 14, the rotation speed of the temperature switching chamber blower 14 is increased as compared with the low temperature side. As a result, the air sent from the temperature switching chamber blower 14 as shown by the arrow F flows through the communication passage 36 via the outlet 33b as shown by the arrow G. As a result, the air in the temperature switching chamber 3 is guided to the temperature switching chamber blower 14 via the temperature switching chamber return damper 20 and circulates as indicated by the broken line S in FIG.

  In step # 15, the rotation speed of the freezer compartment fan 18 is lowered as compared with the case where the temperature switching chamber 3 is set to the low temperature side. In step # 16, the number of rotations of the refrigerating room blower 28 is lowered as compared with the case where the temperature switching room 3 is set to the low temperature side.

  In step # 17, it is detected by the temperature sensor 16 whether or not the room temperature of the temperature switching chamber 3 has risen to a predetermined upper limit temperature. If the temperature switching chamber 3 has not been heated to the upper limit temperature, the process proceeds to step # 19. If the temperature switching chamber 3 has been heated to the upper limit temperature, the heater 15 is stopped in step # 18.

  In step # 19, it is detected by the temperature sensor 16 whether the room temperature of the temperature switching chamber 3 has dropped to a predetermined lower limit temperature. When the temperature switching chamber 3 is not lowered to the lower limit temperature, the process proceeds to step # 21. When the temperature switching chamber 3 is lowered to the lower limit temperature, the heater 15 is turned on in step # 20. Thereby, ON and OFF of the heater 15 are repeated, and the temperature switching three chambers are maintained at a predetermined temperature.

  Therefore, the temperature switching chamber 3 can be sealed to prevent warm air from flowing out, and the temperature switching chamber blower 14 can be driven to make the temperature distribution in the temperature switching chamber 3 on the high temperature side uniform. Can be prevented from being deformed, ignited and smoked.

  In step # 21, it is determined whether or not the temperature switching chamber 3 has been switched to the low temperature side. When the temperature switching chamber 3 is not switched to the low temperature side, the process proceeds to step # 17, and steps # 17 to # 21 are repeatedly performed. When the temperature switching chamber 3 is switched to the low temperature side, the process proceeds to the processing at the low temperature side switching. Thereby, while the heater 15 is turned off, the rotation speed of the freezer compartment fan 18 and the refrigerator compartment fan 28 is increased, and the rotation speed of the temperature switching chamber fan 14 is decreased.

  According to the present embodiment, since the temperature switching chamber 3 that can switch the room temperature between the low temperature side for storing the stored product in a cold state and the high temperature side for maintaining the heated food is provided, the user's economy is not required. Thus, it is possible to provide a highly convenient refrigerator 1 that can reduce the burden on the environment and keep the heated food warm without requiring an installation place such as a heat storage. Further, when the temperature switching chamber 3 is switched to the high temperature side, the number of rotations of the freezer compartment fan 18 is reduced, so that the cooling capacity is reduced according to the decrease in the cooling volume by closing the passage between the temperature switching chamber 3 and the cooler 17. Can be reduced. Therefore, waste of electric power can be prevented.

  Further, when the temperature switching chamber 3 is switched to the high temperature side, the number of rotations of the refrigerating room blower 28 is reduced, so that the amount of cold air distributed in the refrigerating room 2 does not become excessive, and overcooling of the refrigerating room 2 can be prevented. it can.

  Further, according to the present invention, since the air in the high temperature side temperature switching chamber 3 is circulated by the temperature switching chamber blower 14, the temperature in the temperature switching chamber 3 can be made uniform.

  Further, according to the present invention, since the rotation speed of the temperature switching chamber blower 14 when the temperature switching chamber 3 is set to the high temperature side is increased, the air in the temperature switching chamber 3 can be rapidly circulated to equalize the temperature. it can. Moreover, since the rotation speed of the freezer compartment fan 18 is made small, the increase in the noise by having increased the rotation speed of the temperature switching room blower 14 can be prevented.

  In the present embodiment, a damper may be provided at the outlet of the vegetable compartment 5. Thereby, when the temperature switching chamber 3 is switched from the high temperature side to the low temperature side, it is possible to prevent the hot air from the temperature switching chamber 3 from flowing backward into the vegetable chamber 5 by closing the damper. Further, when the freezer compartment fan 18 is stopped when the temperature switching chamber 3 is switched from the high temperature side to the low temperature side, the freezer compartment damper 22 is closed. Thereby, it is possible to prevent the hot air from flowing backward from the freezer damper 22 into the freezer compartment 6 by driving the temperature switching chamber blower 14.

  Moreover, although the freezer compartment 6 and the refrigerator compartment 2 are cooled with the cooler 17, you may provide the cooler for exclusive use of the refrigerator compartment 2 and the vegetable compartment 5 separately. At this time, the refrigerator 17 and the temperature switching chamber 3 can be cooled by the cooler 17.

  According to the present invention, it can be used for a refrigerator having a temperature switching chamber.

The front view which shows the refrigerator of embodiment of this invention The right view which shows the refrigerator of embodiment of this invention Sectional drawing of right side which shows the refrigerator of embodiment of this invention Cross section of the right side showing the temperature switching chamber of the refrigerator of the embodiment of the present invention Front sectional drawing which shows the middle step part of the refrigerator of embodiment of this invention Cold air circuit diagram showing the flow of cold air in the refrigerator of the embodiment of the present invention The flowchart which shows operation | movement when the temperature switching chamber of the refrigerator of embodiment of this invention is switched to the high temperature side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Refrigeration room 3 Temperature switching room 4 Ice making room 5 Vegetable room 6 Freezing room 9 Door 12 Introduction ventilation path 13 Temperature switching room discharge damper 14 Temperature switching room blower 15 Heater 17 Cooler 16, 24, 34 Temperature sensor 18 Freezing room Blower 19, 21 Return ventilation path 20 Temperature switching room return damper 22 Freezer compartment damper 25 Chilled room damper 28 Cold room blower 30 Thermal fuse 31, 32 Cold air passage 33 Back plate 35 Compressor

Claims (7)

And a freezing chamber for freezing save the savings built products,
A temperature switching room that can switch the room temperature between a low temperature side for storing stored items in a cold state and a high temperature side for keeping heated foods warm;
A cooler that produces cold air;
A freezer compartment fan that sends out the cold air generated by the cooler to the freezer compartment ;
Before SL temperature switching compartment damper to close the passage between the temperature switching compartment when the temperature switchable compartment and a high temperature side to the cooler,
The freezer compartment blower and the temperature switching chamber are provided so as not to overlap when projected from the front of the refrigerator body, and the freezer compartment blower is provided on the back side of the peripheral space of the temperature switching chamber,
The refrigerator characterized in that the number of rotations of the freezer compartment blower when the temperature switching chamber is on the high temperature side is smaller than the number of revolutions of the freezer compartment blower when the temperature switching chamber is on the low temperature side. A refrigeration room for refrigerated storage, a refrigeration room blower for sending cold air branched from the exhaust side of the freezer blower to the refrigeration room, and a cold air branched from the exhaust side of the freezer fan to the temperature switching chamber The refrigerator according to claim 1, further comprising a temperature switching chamber blower to be sent out. 2. The temperature switching chamber blower for sending the cold air branched from the exhaust side of the freezing chamber blower to the temperature switching chamber, wherein the freezing chamber blower is provided in the vicinity of the temperature switching chamber. Refrigerator. A refrigerator room for storing stored items in a refrigerator;
A freezer room for freezing and storing stored items;
A temperature switching room capable of switching the room temperature between a low temperature side for storing stored items in a cold state and a high temperature side for keeping heated foods warm;
A cooler that produces cold air;
A freezer compartment fan that sends out the cold air generated by the cooler to the freezer compartment;
A refrigerating room blower for sending cold air branched from the exhaust side of the freezing room blower to the refrigerating room;
A temperature switching chamber blower for sending cold air branched from the exhaust side of the freezer compartment blower to the temperature switching chamber;
A temperature switching chamber damper that closes a passage between the temperature switching chamber and the cooler when the temperature switching chamber is set to a high temperature side;
And the rotational speed of the freezer compartment blower when the temperature switching chamber is on the high temperature side is smaller than the rotational speed of the freezer compartment blower when the temperature switching chamber is on the low temperature side,
The refrigerator characterized in that the number of rotations of the refrigerating room blower when the temperature switching room is on the high temperature side is smaller than the number of rotations of the refrigerating room blower when the temperature switching room is on the low temperature side .   The refrigerator according to any one of claims 2 to 4, wherein the temperature switching chamber damper is closed, and air in the temperature switching chamber on the high temperature side is circulated by the temperature switching chamber blower.   6. The rotational speed of the temperature switching chamber blower when the temperature switching chamber is on the high temperature side is greater than the rotational speed of the temperature switching chamber blower when the temperature switching chamber is on the low temperature side. Refrigerator. The passage is a cold air passage communicating the temperature switching chamber and the cooler via a ventilation path having a heat insulating wall,
The temperature switching chamber damper is provided in the ventilation path, and the temperature switching chamber damper closes the ventilation path when the temperature switching chamber is set to a high temperature side. The refrigerator in any one.

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