JP4646857B2 - 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 in the present invention to achieve the above object, in a refrigerator having a temperature switchable compartment can be switched to room temperature, and the introduction air passage for guiding the cool air of the cold却器the air inlet of the temperature switchable compartment, wherein the introduction A temperature switching chamber discharge damper for opening and closing the ventilation path, a return ventilation path for returning the air flowing out from the air outlet of the temperature switching chamber to the cooler, and a temperature switching chamber return damper for opening and closing the return ventilation path The introduction ventilation path and the return ventilation path are disposed adjacent to each other, and the temperature switching chamber discharge damper and the temperature switching chamber return damper are opened and closed by a common baffle, and the temperature switching chamber discharge damper and the temperature switching chamber are opened and closed. The return dampers are arranged in a horizontal direction, and the temperature switching chamber has a low temperature side that cools and stores stored items by cooling by a cooler and heating by a heater, and a high temperature side that is higher than normal temperature. When the temperature switching chamber is set to the low temperature side, the introduction ventilation path and the return ventilation path are opened simultaneously, and when the temperature switching chamber is set to the high temperature side, the introduction ventilation path and the return ventilation path are simultaneously set. A temperature switching chamber blower that circulates the air in the temperature switching chamber when closed and the temperature switching chamber is set to a high temperature side, and a communication path that communicates the air outlet and the air inlet. The chamber return damper opens the communication path when the return ventilation path is closed by the movement of the baffle, and closes the communication path when the return ventilation path is opened. The horizontal region of the temperature switching chamber return damper at least a portion disposed below and in the vicinity of the temperature switching compartment blower, arranged said temperature switch discharge damper in the vicinity of the temperature switchable compartment return damper, the return air passage may flow cold air flowing out of the refrigerating chamber of Passage to provided between the cooler, the return air passage communicating with the temperature switchable compartment return damper is characterized in that at least in part a ventilation passage leading to separate the condenser.

  According to this configuration, the cold air generated by the cooler is guided to a storage room such as a freezing room to cool the stored items. A common baffle of the temperature switching chamber discharge damper and the temperature switching chamber return damper is rotated to open the introduction ventilation path and the return ventilation path. Thereby, the cold air generated by the cooler flows into the temperature switching chamber from the air inlet through the introduction ventilation path. The cold air flows through the temperature switching chamber, flows out from the air outlet, and returns to the cooler through the return ventilation path. When the baffles of the temperature switching chamber discharge damper and the temperature switching chamber return damper are rotated to close the introduction ventilation path and the return ventilation path, the inflow of cold air to the temperature switching chamber is blocked.

When the temperature switching chamber is set to the low temperature side, the common baffle of the temperature switching chamber discharge damper and the temperature switching chamber return damper is rotated to open the introduction ventilation path and the return ventilation path. When the temperature switching chamber is set to the high temperature side, the temperature switching chamber discharge damper and the temperature switching chamber return damper close the introduction ventilation path and the return ventilation path by a common baffle. Then, the heater is driven to raise the temperature of the air in the temperature switching chamber.

Also, closing the introduction air passage and a return air passage by the baffle opens the communication passage, the air temperature switchable compartment is circulated through the communicating passage. In addition, the return ventilation path leading to the temperature switching chamber return damper is at least partially a ventilation path leading to the independent cooler. In addition, the temperature switching chamber return damper and the temperature switching chamber discharge damper are positioned below the temperature switching chamber in a horizontal direction.

  According to the present invention, in the refrigerator configured as described above, the baffle includes a first pressing portion that blocks the introduction ventilation path and a second pressing portion that blocks the return ventilation path, and is cut between the first and second pressing sections. It is characterized by having a notch. According to this structure, the partition member etc. which partition between an introductory ventilation path and a return ventilation path are provided in a notch, and the air which flows into a temperature switching chamber and the air which flows out from a temperature switching chamber are isolated. The partition member may be formed by a heat insulating member constituting the housing of the refrigerator, or may be formed integrally with the temperature switching chamber discharge damper and the temperature switching chamber return damper.

  In the refrigerator configured as described above, the area of the opening of the return ventilation path opened and closed by the baffle is larger than the area of the opening of the introduction ventilation path opened and closed by the baffle. According to this configuration, when the temperature switching chamber is set to the low temperature side, the air heated by exchanging heat with the stored material flows through the return ventilation path having a wide opening area.

  According to the present invention, the introduction ventilation path and the return ventilation path are arranged adjacent to each other, and the temperature switching chamber discharge damper and the temperature switching chamber return damper are opened and closed by the common baffle, so that the temperature switching chamber discharge damper and the temperature switching chamber return The damper can be integrated to reduce the occupied space. Thereby, while being able to achieve size reduction of a refrigerator, workability | operativity of attachment of a temperature switching chamber discharge damper and a temperature switching chamber return damper can be improved. Further, it is not necessary to provide a baffle and a plurality of baffle driving devices, and the number of parts can be reduced.

  In addition, according to the present invention, since the temperature switching chamber is provided that can switch the room temperature between a low temperature side for storing refrigerated or frozen products and a high temperature side that is higher than normal temperature, the user can keep the heated food warm. It is possible to provide a highly convenient refrigerator while reducing the economic burden and making it easy to secure a place.

  Further, according to the present invention, the temperature switching chamber return damper opens the communication path when the return ventilation path is closed by the movement of the baffle, and closes the communication path when the return ventilation path is opened, so without increasing the number of parts. Air in the temperature switching chamber can be easily circulated.

  Further, according to the present invention, since the notch is provided in the baffle, it is possible to prevent a short circuit in which the air in the introduction ventilation path flows into the return ventilation path. Further, the baffle can be driven by one driving device.

  Further, according to the present invention, the area of the opening of the return ventilation path that is opened and closed by the baffle is larger than the area of the opening of the introduction ventilation path that is opened and closed by the baffle. Can be circulated through a return ventilation passage having a wide opening area to reduce pressure loss. Moreover, when the communicating path which connects an air outlet and an air inlet is provided, a baffle opens and closes a communicating path by the part which opens and closes the opening of a return ventilation path. Thereby, since the opening area of a communicating path can be enlarged, when the temperature switching chamber is made into the high temperature side, the pressure loss of the air which circulates can be reduced and heating efficiency can be improved.

  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. In the refrigerator 1, a refrigerator compartment 2 is arranged at the top, and a temperature switching chamber 3 and an ice making chamber 4 are juxtaposed below the refrigerator compartment 2. A freezer compartment 6 is disposed below the temperature switching chamber 3 and the ice making chamber 4. A vegetable compartment 5 is arranged below the freezer compartment 6.

  The refrigerator compartment 2 stores stored items in a refrigerator. The temperature switching chamber 3 can be switched by the user to a plurality of low temperature ranges in which stored items are cooled and stored, or to a high temperature side higher than normal temperature. Temporary heat insulation or hot cooking of cooked cooked food can be performed with the temperature switching chamber 3 set to the high temperature side. The ice making chamber 4 is maintained below the freezing point and performs ice making. The freezer room 6 communicates with the ice making room 4 to store the stored items in a frozen state. The vegetable room 5 is maintained at a temperature suitable for storing vegetables (about 8 ° C.).

  FIG. 3 is a right side sectional view of the refrigerator 1. The ice making room 4, the freezing room 6, the vegetable room 5 and the temperature switching room 3 are provided with a storage case 43 for storing stored items. The refrigerator compartment 2 is provided with a plurality of storage shelves 41 on which stored items are placed. A plurality of storage pockets 42 are provided on the door of the refrigerator compartment 2. Thereby, the usability of the refrigerator 1 is improved. A chilled chamber 21 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 11 connected to the compressor 45 is disposed in the cold air passage 31. Behind the refrigerator compartment 2 is provided a cold air passage 32 communicating with the cold air passage 31 via the refrigerator compartment damper 20. A refrigerant such as isobutane is circulated by driving a compressor 45 connected to a condenser and an expander (both not shown) to operate a refrigeration cycle. As a result, the cooler 11 on the low temperature side of the refrigeration cycle exchanges heat with the air flowing through the cold air passage 31 to generate cold air. A defrost heater 33 that defrosts the cooler 11 is provided below the cooler 11.

  In the cold air passages 31 and 32, the freezer compartment fan 12 and the refrigerator compartment fan 23 are respectively arranged. As will be described in detail later, the cold air generated by the cooler 11 is supplied to the freezer compartment 6, the ice making chamber 4, and the temperature switching chamber 3 through the cold air passage 31 by driving the freezer compartment fan 12. The cold air is supplied to the refrigerator compartment 2, the chilled compartment 21 and the vegetable compartment 5 through the cold passage 32 by driving the refrigerator compartment fan 23.

  FIG. 4 shows 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 the front of the freezer compartment fan 12, and air is sent out to the ice making chamber 4 by the freezer compartment fan 12. A freezer compartment damper 22 is provided below the freezer compartment 6 that communicates with the ice making compartment 4. The amount of air flowing out of the freezer compartment 6 is adjusted by opening and closing the freezer compartment damper 22. Further, an introduction ventilation path 15 that branches from the cold air passage 31 and guides the cold air to the temperature switching chamber 3 is provided.

  The upper part of the cold air passage 31 communicates with the cold air passage 32 via the refrigerator compartment damper 20. When the refrigerator compartment damper 20 is opened and the freezer compartment fan 12 is driven, cold air is supplied to the refrigerator compartment 2 and the chilled compartment 21. 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 connecting passage 34 that passes through the back surface of the temperature switching chamber 3, and the refrigerator compartment 2 and the vegetable compartment 5 communicate with each other. A return ventilation path 35 (see FIG. 3) communicating with the cold air passage 31 is provided at the upper back of the vegetable compartment 5.

  A temperature switching chamber blower 18 and a heater 16 are disposed above the temperature switching chamber 3 that is insulated from the ice making chamber 4 by the heat insulating wall 39. A damper device 36 is provided below the temperature switching chamber 3. The damper device 36 is formed by integrating a housing 36a of a temperature switching chamber discharge damper 37 (see FIG. 5) and a temperature switching chamber return damper 38 (see FIG. 6). The temperature switching chamber discharge damper 37 is disposed on the introduction ventilation path 15. The temperature switching chamber return damper 38 is disposed on the path of the return ventilation path 17 provided adjacent to the introduction ventilation path 15. The air in the temperature switching chamber 3 returns to the cool air passage 31 via the return ventilation path 17.

  FIG. 5 shows a cross-sectional view taken along line EE of FIG. The upper and lower surfaces of the temperature switching chamber 3 are insulated from the refrigerator compartment 2 and the freezer compartment 6 by heat insulation walls 7 and 8. The front surface of the temperature switching chamber 3 can be opened and closed by a pivotable door 9. The back surface of the temperature switching chamber 3 is covered with a back plate 40. An air inlet 40 a through which air flows into the temperature switching chamber 3 is provided at the upper part of the back plate 40. Further, an air outlet 40b (see FIG. 6) through which air flows out from the temperature switching chamber 3 is provided at the lower part of the back plate 40.

  The introduction ventilation path 15 is provided between the back plate 40 and the heat insulating wall 10 forming the outer wall, and guides cool air to the air inlet 40a. The temperature switching chamber discharge damper 37 is disposed below the introduction ventilation path 15. The amount of air flowing into the temperature switching chamber 3 from the introduction ventilation path 15 is adjusted by the opening / closing amount of the temperature switching chamber discharge damper 37. The temperature switching chamber blower 18 is disposed in the upper portion of the introduction ventilation path 15, and the heater 16 is disposed between the temperature switching chamber blower 18 and the air inlet 40a.

  The heater 16 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 40. The temperature switching chamber blower 18 is disposed so as to blow toward the surface of the heater 16. Thereby, the surface temperature of the heater 16 can be lowered and safety can be improved.

  FIG. 6 shows a cross-sectional view taken along line FF in FIG. A return ventilation path 17 in which a temperature switching chamber return damper 38 is disposed is provided behind the air outlet 40b. In the return ventilation path 17, the communication path 30 is branched upward from the air outlet 40 b side of the temperature switching chamber return damper 38. The communication passage 30 connects the air outlet 40b and the intake side of the temperature switching chamber blower 18. The temperature switching chamber return damper 38 opens the communication path 30 when the return ventilation path 17 is closed by rotation of the baffle 26 described later, and closes the communication path 30 when the return ventilation path 17 is opened.

  7 and 8 are a front view and a side sectional view showing the damper device 36. In the damper device 36, a baffle 26 disposed on the front surface of the housing 36a is pivotally supported by a pivot portion 26a. The pivot portion 26 a of the baffle 26 is connected to the drive unit 23, and the baffle 26 is rotated by the drive of the drive unit 23.

  FIG. 9 is a front view showing the housing 36a. The housing 36a is made of a resin molded product, and the first and second openings 24 and 25 partitioned by the partition wall 19 are provided adjacent to each other. The first opening 24 is disposed on the path of the introduction ventilation path 15, and the second opening 25 is disposed on the path of the return ventilation path 17. Moreover, the opening area of the second opening 25 is larger than the opening area of the first opening 24.

  FIG. 10 is a front view showing the baffle 26. The baffle 26 has first and second pressing portions 27 and 28 that are adjacent to each other through a notch 29. The first and second presser portions 27 and 28 are connected by a pivotal support portion 26a and integrally rotate to open and close the first and second opening portions 24 and 25 (see FIG. 9), respectively. Therefore, the temperature switching chamber discharge damper 37 (see FIG. 5) that opens and closes the introduction ventilation path 15 is configured by the first opening 24 and the first pressing portion 27. Further, the temperature switching chamber return damper 38 (see FIG. 6) that opens and closes the return ventilation path 17 is constituted by the second opening 25 and the second presser 28.

  The introduction ventilation path 15 and the return ventilation path 17 are isolated by a heat insulating material (not shown) formed integrally with the heat insulating wall 10 (see FIG. 5). The heat insulating material contacts the partition wall 19 through the notch 29. Thereby, the short circuit in which the air in the introduction ventilation path 15 flows into the return ventilation path 17 can be prevented. Further, the first and second pressing portions 27 and 28 can be easily rotated while avoiding the heat insulating material by the notch 29. The partition wall 19 may be formed so as to protrude forward through the notch 29 to isolate the introduction ventilation path 15 and the return ventilation path 17.

  FIG. 11 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. The vegetable compartment 5 is arranged in series with the refrigerator compartment 2, and the ice making room 4 is partly arranged in series with the freezer compartment 6. The cold air generated by the cooler 11 is sent up to the ice making chamber 4 and the freezer compartment 6 by raising the cool air passage 31 by driving the freezer compartment fan 12. The cold air sent to the ice making room 4 flows through the ice making room 4 and flows into the freezing room 6. Cold air in the freezer compartment 6 flows out of the freezer damper 22 and returns to the cooler 11 via the cold air passage 31. As a result, the ice making chamber 4 and the freezing chamber 6 are cooled.

  When the refrigerating room damper 20 is opened and the refrigerating room blower 23 is driven, the cold air branched at the upper portion of the cold air passage 31 flows through the cold air passage 32 as shown by an arrow A (see FIG. 4). Thereby, cold air is sent out to the refrigerator compartment 2 and the chilled chamber 21. This cold air flows through the refrigerator compartment 2 and the chilled compartment 21, and then flows into the vegetable compartment 5 through the connecting passage 34 as shown by an arrow B (see FIG. 4). The cold air flowing into the vegetable compartment 5 flows through the vegetable compartment 5 and returns to the cooler 11 via the return ventilation path 35 (see FIG. 3). Thereby, the inside of the refrigerator compartment 2 and the vegetable compartment 5 is cooled, and when it becomes preset temperature, the refrigerator compartment damper 20 will be closed.

  When the temperature switching chamber discharge damper 37 is opened and the temperature switching chamber blower 18 is driven, a part of the cool air in the cool air passage 31 flows through the introduction ventilation path 15 as shown by an arrow C (see FIG. 4). The cold air flowing through the introduction ventilation path 15 is guided to the air inlet 40 a of the temperature switching chamber 3 through the first opening 24 of the temperature switching chamber discharge damper 37. The cold air flowing into the temperature switching chamber 3 from the air inlet 40a flows through the temperature switching chamber 3 and flows out from the air outlet 40b. Then, as shown by an arrow D (see FIG. 4), the return air passage 17 is circulated through the temperature switching chamber return damper 38 and returned to the cooler 11. 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 varying the amount of opening of the temperature switching chamber discharge damper 37. For example, the heater 16 may be energized to switch the temperature from the refrigerated room temperature to the refrigerated room temperature. Thereby, it can switch to desired room temperature rapidly.

  Further, by energizing the heater 16, the room temperature of the temperature switching chamber 3 can be switched from a low temperature side to a high temperature side higher than normal temperature. When the temperature switching chamber 3 is switched to the high temperature side, the temperature switching chamber discharge damper 37 and the temperature switching chamber return damper 38 of the damper device 36 close the first and second openings 24 and 25 by the baffle 26. Thereby, the introduction ventilation path 15 and the return ventilation path 17 are closed.

  Further, the heater 16 and the temperature switching chamber blower 18 are driven, and the air in the temperature switching chamber 3 circulates through the communication path 30 as indicated by a broken line arrow S in FIG. Thereby, the air in the temperature switching chamber 3 is heated, and is maintained at a predetermined temperature higher than the normal temperature by the energization control of the heater 16.

  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.

  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 refrigerated or frozen storage and the high temperature side higher than the normal temperature is provided, the user for keeping the heated food warm. Thus, it is possible to provide a highly convenient refrigerator 1 while reducing the economic burden and making it easy to secure a place.

  In addition, the introduction ventilation path 15 and the return ventilation path 17 are disposed adjacent to each other, and the temperature switching chamber discharge damper 37 and the temperature switching chamber return damper 38 are opened and closed by the common baffle 26. The switching chamber return damper 38 can be integrated to reduce the occupied space. Accordingly, the refrigerator 1 can be miniaturized and the workability of attaching the temperature switching chamber discharge damper 37 and the temperature switching chamber return damper 38 can be improved. Further, it is not necessary to provide a baffle 26 and a plurality of baffle 26 driving devices, and the number of parts can be reduced. In addition, parts such as sealing materials and lead wires can be reduced, and workability can be further improved.

  Further, since the housing 36a of the temperature switching chamber discharge damper 37 and the temperature switching chamber return damper 38 is integrally formed, the temperature switching chamber discharge damper 37 and the temperature switching chamber return damper 38 can be easily installed.

  Further, since the opening area of the first opening 24 of the damper device 36 is larger than the opening area of the second opening 25, the return air passage having a wide opening area allows air that is expanded by heat exchange with the stored material to expand. The pressure loss can be reduced. Further, the baffle 26 opens and closes the communication path 30 by a second pressing part 28 that opens and closes the second opening 25 of the return ventilation path 17. For this reason, the opening area of the communication path 30 can be increased, and the pressure loss of the air circulating when the temperature switching chamber 3 is set to the high temperature side can be reduced, and the heating efficiency can be improved.

  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 12 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 hot air from flowing backward from the freezer damper 22 into the freezer compartment 6 by driving the temperature switching chamber blower 18.

  Moreover, although the freezer compartment 6 and the refrigerator compartment 2 are cooled with the cooler 11, you may provide the cooler for exclusive use of the refrigerator compartment 2 and the vegetable compartment 5 separately. At this time, the refrigerator 11 and the temperature switching chamber 3 can be cooled by the cooler 11.

  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 Front sectional drawing which shows the refrigerator of embodiment of this invention EE sectional view of FIG. FF sectional view of FIG. The front view which shows the damper apparatus of the refrigerator of embodiment of this invention Side surface sectional drawing which shows the damper apparatus of the refrigerator of embodiment of this invention The front view which shows the housing of the damper apparatus of the refrigerator of embodiment of this invention The front view which shows the baffle of the damper apparatus 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

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 11 Cooler 12 Freezing room blower 15 Introducing ventilation path 16 Heater 17, 35 Return ventilation path 18 Temperature switching room blower 20 Refrigeration room damper 21 Chilled Chamber 22 Freezer compartment damper 23 Refrigeration room blower 24 First opening 25 Second opening 26 Baffle 27 First presser 28 Second presser 29 Notch 30 Communication passage 31, 32 Cold air passage 34 Connection passage 36 Damper device 36a Housing 37 Temperature switching chamber discharge damper 38 Temperature switching chamber return damper 40 Back plate 40a Air inlet 40b Air outlet 45 Compressor

Claims (4)

In a refrigerator equipped with a temperature switching room that can switch the room temperature,
And introducing air passage for guiding the cool air of the cold却器the air inlet of the temperature switchable compartment,
A temperature switching chamber discharge damper for opening and closing the introduction ventilation path;
A return ventilation path for returning the air flowing out from the air outlet of the temperature switching chamber to the cooler;
A temperature switching chamber return damper that opens and closes the return ventilation path;
The introduction ventilation path and the return ventilation path are disposed adjacent to each other, and the temperature switching chamber discharge damper and the temperature switching chamber return damper are opened and closed by a common baffle,
The temperature switching chamber discharge damper and the temperature switching chamber return damper are arranged in a horizontal direction,
The temperature switching chamber can be switched between a low temperature side that cools and preserves stored items by cooling by a cooler and heating by a heater and a high temperature side that is higher than normal temperature, and the introduction ventilation when the temperature switching chamber is set to a low temperature side. Simultaneously opening the path and the return ventilation path, and simultaneously closing the introduction ventilation path and the return ventilation path when the temperature switching chamber is on the high temperature side,
A temperature switching chamber blower that circulates air in the temperature switching chamber when the temperature switching chamber is set to a high temperature side, and a communication passage that communicates the air outlet and the air inlet, and returns to the temperature switching chamber The damper opens the communication path when the return ventilation path is closed by the movement of the baffle, and closes the communication path when the return ventilation path is opened,
Arranging at least a part of the horizontal region of the temperature switching chamber return damper in the vicinity near the lower side of the temperature switching chamber fan, and arranging the temperature switching discharge damper in the vicinity of the temperature switching chamber return damper ,
The return ventilation path is provided between the cooler and the passage through which the cold air flowing out from the refrigerator compartment flows,
The refrigerator, wherein the return ventilation path leading to the temperature switching chamber return damper is a ventilation path leading to at least a part of the independent cooler . 2. The refrigerator according to claim 1, wherein the temperature switching chamber return damper and the temperature switching chamber discharge damper are arranged in a horizontal direction below the temperature switching chamber. The baffle includes a first pressing portion that blocks the introduction ventilation path and a second pressing portion that blocks the return ventilation path, and a notch is provided between the first and second pressing sections. The refrigerator of Claim 1 or Claim 2 . The area of the opening of the return air passage is opened and closed by the baffle, to any one of claims 1 to 3, characterized in that it is larger than the area of the opening of the introduction air passage which is opened and closed by the baffle The refrigerator described.

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