JP4667307B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator provided with a blower for sending cold air to a storage room.

  The conventional refrigerator provided with the air blower which sends out cool air to a storage room is disclosed by patent document 1. FIG. In this refrigerator, a cooler that generates cool air is disposed on the back of the freezer compartment, and a cool air distributor that distributes cool air around the cooler is provided. A blower is disposed above the cooler, and a cooling chamber is disposed above the freezer compartment.

  The cold air cooled by the cooler is sent out to the freezer compartment by a blower, and the cooler heat of the cooler is discharged from the back to the freezer compartment. Thereby, a freezer compartment can be cooled efficiently. Further, the cold air cooled by the cooler is guided upward from the freezer compartment through the cool air distributor by driving the blower, and is sent out from the plurality of discharge ports to the cooling chamber.

  The refrigerator includes a temperature switching chamber in which the room temperature can be switched. The temperature switching chamber can supply cold air generated by a cooler to cool and store the stored material, and can maintain the temperature of the heated material by maintaining a temperature higher than normal temperature by driving a heater provided in the chamber.

Further, Patent Document 2 discloses a refrigerator in which a refrigerator compartment is disposed above a freezer compartment and a circulation fan is provided on the back side of the refrigerator compartment.
Japanese Patent Laid-Open No. 10-288440 Japanese Patent Laid-Open No. 10-47828

  However, according to the refrigerator disclosed in Patent Document 1, when the volume of the refrigerating chamber is large, the cold airflow discharged from the discharge port distant from the cold airflow discharged from the discharge port close to the blower becomes weak. For this reason, there has been a problem that the temperature in the refrigerator compartment becomes non-uniform.

  Further, the cool air generated by the cooler rises behind the temperature switching chamber and is guided to the refrigerating chamber. For this reason, heat is easily released from the temperature switching chamber maintained at a high temperature to the cool air adjacent to the temperature switching chamber, and there is a problem that the heat loss is large and the cooling efficiency is poor.

  Moreover, according to the refrigerator disclosed by patent document 2, since the ventilation fan is provided, cold air can circulate through a refrigerator compartment and the room temperature can be equalize | homogenized. However, there has been a problem that the depth of the refrigerator compartment is narrowed by the circulation blower, the internal volume is reduced, and the volumetric efficiency of the refrigerator is lowered.

  An object of this invention is to provide the refrigerator which can make room temperature uniform and can improve volumetric efficiency. Moreover, an object of this invention is to provide the refrigerator provided with the temperature switching chamber which can reduce a heat loss and can improve cooling efficiency.

  In order to achieve the above object, the present invention provides a freezing room that is maintained below the freezing point, a cooling room that is disposed above the freezing room via a heat insulating wall, and a cooler that is disposed on the back of the freezing room. A cooler to be generated, a cold air passage for a freezing chamber that guides the cold air to the freezing chamber, a cold air passage for the cooling chamber that communicates with the cold air passage for the freezing chamber and leads the cold air to the cooling chamber, and the cold air passage for the freezing chamber A cool air distributor that distributes the cool air flowing through the cool air passage to the cooling chamber, and a first blower that sends the cool air to the cool chamber through the cool air passage for the cool chamber, and in the front projection, the heat insulating wall; The first air blower is arranged at an overlapping position.

  According to this configuration, when the first air blower that overlaps the front and rear with the heat insulating wall that separates the freezing room and the cooling room is driven, the cold air generated by the cooler flows through the cold air passage for the freezing room and passes through the cold air distributor. Circulates the cooling air passage for the cooling chamber. The cool air flowing through the cool air passage for the cooling chamber is sent into the cooling chamber, and the stored items in the cooling chamber are cooled. Moreover, the cold heat of a cooler is discharge | released and a freezer compartment is cooled. The first blower may be disposed in the cold air passage for the freezing room, or may be disposed in the cold air passage for the cooling room. The freezing room maintained below the freezing point includes an ice making room for making ice.

  According to the present invention, in the refrigerator configured as described above, the first blower is disposed in the cold air passage for the cooling chamber, and a second blower is provided in the cold air passage for the freezing chamber to send the cold air to the freezer compartment. It is a feature. According to this configuration, when the second blower is driven, cold air flows through the freezer compartment cold air passage and is sent to the freezer compartment. When the first blower is driven, a part of the cold air flowing through the freezer compartment cooler passage is guided to the cooler compartment cooler passage through the cooler distributor and sent to the cooler chamber.

  In the refrigerator having the above-described configuration, the present invention is characterized in that the first blower, the cold air distributor, and the second blower are arranged side by side in the vertical direction.

  Further, the present invention is characterized in that, in the refrigerator configured as described above, one of the first and second blowers is arranged with the exhaust side facing upward.

  Moreover, the present invention is characterized in that, in the refrigerator having the above-described configuration, the first blower is arranged in the vertical direction with the exhaust side facing upward.

  In the refrigerator configured as described above, the first blower is disposed with the exhaust side facing upward and rearward, and the second blower is disposed with the exhaust side facing forward and upward.

  Further, in the refrigerator having the above-described configuration, the foam heat insulating material is filled between the inner box that forms the inner surface of the main body and the outer box that forms the outer surface of the refrigerator. It is characterized in that it is injected into the heat insulating wall communicating with the box at the same time and foamed integrally.

  Further, in the refrigerator having the above-described configuration, the cooling chamber includes a refrigeration chamber, and the freezing chamber has an ice making chamber for making ice, and the temperature can be maintained at 50 ° C. to 80 ° C. by switching the room temperature. A chamber is provided at a side of the ice making chamber. According to this configuration, the first blower is arranged so as to overlap the heat insulating wall between the refrigerator compartment and the ice making chamber. The temperature switching chamber is insulated from the ice making chamber and the refrigeration chamber and maintained at a high temperature of 50 ° C to 80 ° C.

  Further, in the refrigerator having the above-described configuration, the temperature switching chamber and the ice making chamber are separated by a vertical heat insulating wall made of a heat insulating material, and the cold air distributor and the vertical heat insulating wall are arranged at a position overlapping in front projection. It is characterized by that.

  According to the present invention, since the heat insulating wall that separates the freezing chamber and the cooling chamber and the first blower are arranged at the overlapping position in the front projection, the first blower and the cooling chamber are arranged close to each other. For this reason, even if the volume of a cooling chamber is large, the difference in the intensity | strength of the cold airflow discharged between the discharge port near a 1st air blower and a distant discharge port becomes small. Therefore, the temperature distribution in the cooling chamber can be made uniform. Moreover, since the 1st air blower is not arrange | positioned in a cooling chamber, the volume in a cooling chamber can be ensured widely and the volumetric efficiency of a refrigerator can be improved. In addition, the volume of the cooling chamber can be maintained to ensure a large volume of the other storage chamber.

  Further, according to the present invention, the first blower is disposed in the cold air passage for the cooling chamber, and the second blower is provided in the cold air passage for the freezing chamber, so that the cold air flowing through the cold air passage for the freezing chamber can be easily used for the cooling chamber. It can lead to a cold air passage. Therefore, the cooling chamber can be easily maintained at a desired temperature.

  According to the present invention, since the first blower, the cool air distributor, and the second blower are arranged side by side in the vertical direction, the width in the left-right direction of the refrigerator can be narrowed, and the cool air passage for the cooling chamber and the cool air passage for the freezing chamber are shortened. Thus, the volumetric efficiency can be further improved.

  Further, according to the present invention, since at least one exhaust side of the first and second blowers is directed upward, it is possible to efficiently distribute cool air upward to reduce noise and save energy.

  According to the present invention, since the first blower is disposed in the vertical direction with the exhaust side facing upward, the vertical length of the first blower is reduced, and the first blower is within the thickness of the heat insulating wall. Can be easily arranged.

  Further, according to the present invention, the first blower is disposed with the exhaust side facing rearward and upward, and the second blower is disposed with the exhaust side facing forward and upward, so that cool air is sent from the second blower to the freezer compartment. In addition, it can be led to the cooler air passage. In addition, the cooler cooling air passage can be disposed further rearward to secure a larger volume of the cooling chamber, and the cool air can be efficiently guided to the cooler cooling air passage disposed rearward.

  Further, according to the present invention, the foamed heat insulating material stock solution is simultaneously injected between the outer box and the inner box into the heat insulating wall communicating therewith and foamed integrally, so that the heat insulating wall can be formed easily and thinly, The volume of the refrigerator compartment can be secured more widely.

  Further, according to the present invention, the cooling chamber is a refrigeration chamber, and the freezing chamber has an ice making chamber for making ice, and the temperature switching chamber that can be maintained at 50 ° C. to 80 ° C. by switching the room temperature is provided on the side of the ice making chamber. Since it was provided in the direction, the volume of the temperature switching chamber can be secured widely by improving the volume efficiency of the refrigerator. Therefore, the convenience of the refrigerator is improved.

  In addition, according to the present invention, the vertical heat insulating wall that partitions the temperature switching chamber and the ice making chamber and the cold air distributor are arranged so as to overlap in front projection, so that the depth direction of the ice making chamber and the temperature switching chamber can be widened. Therefore, even if the width of the ice making chamber is narrowed, a necessary volume can be secured and a wide temperature switching chamber can be secured, and the convenience of the refrigerator is improved. In addition, since the cool air distributor and the cool air passage for the freezer compartment through which the low temperature cool air flows and the temperature switching chamber maintained at a high temperature are not adjacent to each other, the heat loss can be reduced and the cooling efficiency can be further 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 the refrigerator of the first embodiment. The refrigerator 1 is provided with a refrigerating room 2 (cooling room) at the top, and a temperature switching room 3 and an ice making room 4 are provided side by side below the refrigerating room 2. A freezing room 6 is arranged below the temperature switching room 3 and the ice making room 4, and a vegetable room 5 is arranged below the freezing room 6.

  The refrigerator compartment 2 stores stored items in a refrigerator, and the vegetable compartment 5 cools and preserves vegetables at a room temperature (about 8 ° C.) higher than the refrigerator compartment 2. As will be described later in detail, the temperature switching chamber 3 can be switched by the user at room temperature. The freezer 6 stores the stored items in a frozen state, and the ice making chamber 4 communicates with the freezer 6 to make ice. The ice making room 4 and the freezing room 6 are maintained below the freezing point, and the ice making room 4 constitutes a part of the freezing room 6 in this specification.

  FIG. 3 is a right side sectional view of the refrigerator 1. The main body of the refrigerator 1 is filled with a foam heat insulating material 1c between the outer box 1a and the inner box 1b. The ice making chamber 4 and the temperature switching chamber 3 are separated from the refrigerator compartment 2 by a heat insulating wall 7, and the freezer compartment 6 and the vegetable compartment 5 are separated from each other by a heat insulating wall 8. Further, the temperature switching chamber 3 and the freezing chamber 6 are separated by a heat insulating wall 35 (see FIG. 4), and the temperature switching chamber 3 and the ice making chamber 4 are separated by a vertical heat insulating wall 36 (see FIG. 4). ing.

  When the foam heat insulating material 1c is filled between the outer box 1a and the inner box 1b, the heat insulating walls 7 and 8 are filled simultaneously. That is, the stock solution of the foam heat insulating material 1c is injected simultaneously between the outer box 1a and the inner box 1b and into the heat insulating walls 7 and 8 communicating with the outer box 1a, and is foamed integrally. For the conventional heat insulating walls 7 and 8, a heat insulating material such as a polystyrene foam different from the foam heat insulating material 1c between the outer box 1a and the inner box 1b has been used. By filling the heat insulating walls 7 and 8 simultaneously with the space between the outer box 1a and the inner box 1b with the foam heat insulating material 1c such as urethane foam heat insulating material, the heat insulating walls 7 and 8 can be easily formed thin. Therefore, the volume of the refrigerator compartment 2 can be ensured widely.

  Moreover, the exterior of the heat insulating walls 7 and 8 is made of a separate member from the inner box 1b, and the side surfaces of the heat insulating walls 7 and 8 are opened before filling with the foam heat insulating material 1c, and the inner box 1b is formed on the side surfaces of the heat insulating walls 7 and 8. Open oppositely. By filling the foam heat insulating material 1c, the openings on the side surfaces of the heat insulating walls 7 and 8 and the opening of the inner box 1b are connected and integrated. Thereby, the leakage of cold air or warm air between the storage chambers separated by the heat insulating walls 7 and 8 in different temperature zones is prevented. Thereby, energy saving by reduction of heat loss can be achieved. Moreover, the abnormal noise which generate | occur | produces by the vibration of the heat insulation walls 7 and 8 and the sliding of the heat insulation walls 7 and 8 and the inner case 1b by this vibration can be prevented. In addition, the structural strength can be increased by integral formation.

  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. Further, a chilled chamber 21 which is an isolation chamber maintained in a chilled temperature range (about 0 ° C.), for example, in a temperature range different from that of the refrigerated chamber 2 is provided in the lower part of the refrigerator compartment 2. Instead of the chilled chamber 21, an ice greenhouse maintained at an ice temperature (about −3 ° C.) may be used.

  A machine room 50 is provided behind the vegetable room 5, and a compressor 57 is disposed in the machine room 50. The compressor 57 is connected to a condenser, an expander (not shown), and a cooler 11, and a refrigerant such as isobutane is circulated by driving the compressor 57 to operate a refrigeration cycle. Thereby, the cooler 11 becomes the low temperature side of the refrigeration cycle.

  6 to 8 show a side view, a rear view, and a plan view in the machine room 50. An electrical box 52 attached to the main body of the refrigerator 1 is installed at the rear of the machine room 50. The back surface of the machine room 50 is covered with a back cover 50a made of metal. The electrical box 52 is open at the back and is sealed by the back cover 50a. Thereby, the electrical component 51 covered with the back cover 50a and the electrical box 52 is provided.

  The electrical component 51 includes electrical components including a control board 53 having a control circuit for controlling the compressor 57 and each blower. Since the electrical unit 51 is installed in the machine room 50, the volume of the refrigerator room 2, which is frequently used, is increased as compared with the case where it is installed behind the refrigerator room 2, and the volume efficiency of the refrigerator 1 is improved. Can be improved.

  A hole 52 a is provided on the side surface of the electrical box 52. A lead wire holding portion 54 made of a resin molded product is fitted into the hole 52a. The lead wire holding unit 54 relays a lead wire (not shown) connected to the electrical component in the electrical component unit 51. Thereby, it is possible to easily connect the lead wires to the control board 53 in a state in which the interior of the electrical component 51 is sealed.

  The back cover 50 a and the electrical box 52 are in close contact with each other by a seal member 58. The seal member 58 is made of, for example, a rubber in a ring-like state, a sponge formed by independent foaming, or the like. A space between the lead wire holding portion 54 and the hole 52a is sealed by a seal member (not shown). Thereby, while the inside of the electrical equipment part 51 is sealed and waterproofed, when the combustible refrigerant leaks, it is possible to prevent ignition due to the intrusion of the combustible refrigerant into the electrical equipment part 51.

  The electrical box 52 is formed by drawing a metal plate, has a large heat radiation area, can easily dissipate heat generated by the electrical components, and can easily seal the interior of the electrical component 51. Also, a resin support base 55 that supports the control board 53 is in close contact with the electrical box 52 so that heat generated by the control board 53 can be easily transmitted to the electrical box 52.

  A condenser (not shown) is disposed on the bottom surface of the main body portion in front of the machine room 50, and a condenser fan 60 that cools the condenser is provided on the front surface of the machine room 50. When the condenser fan 60 is driven, outside air is taken in from an intake port 56 provided on the bottom surface of the main body, and the air exchanged heat with the condenser flows into the machine chamber 50 via the condenser fan 60. The condenser fan 60 sends air toward the electrical equipment box 52, and after exchanging heat with the electrical equipment box 52, the compressor 57 is cooled. And it flows out from the corner side of the back cover 50a near the compressor 57 to the outside.

  Since air is sent out toward the electrical equipment box 52 by the condenser fan 60, the amount of heat radiation increases, and the heat generated by the electrical equipment components can be radiated more efficiently. Alternatively, the electrical box 52 may be formed of a resin molded product having a frame part on the front side, and a metal plate may be fitted to the frame part.

  In FIG. 3, a cold air passage 31 (a freezer compartment cold air passage) partitioned by a back plate 6 a is provided behind the freezer compartment 6. The cool air passage 31 is partitioned into a front part 31a and a rear part 31b by a partition plate 31c, and the cooler 11 is arranged in the rear part 31b. Since the cooler 11 is arranged on the back side of the freezer compartment 6, the cold heat of the cooler 11 is released to the freezer compartment 6 side through the partition plate 31c, the front portion 31a, and the back plate 6a. For this reason, the freezer compartment 6 is indirectly cooled efficiently, and the cooling efficiency is improved.

  A cold air passage 32 (cooling chamber cold air passage) communicating with the cold air passage 31 via the cold room damper 20 (cold air distributor) is provided behind the refrigerator compartment 2. 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 for defrosting the cooler 11 is provided below the cooler 11. Below the defrost heater 33, a soup saucer 63 for receiving water by defrost is provided. The soy saucer 63 is provided with a drain pipe 64, and drain water is guided to an evaporating dish (not shown) disposed in the machine room 50 via the drain pipe 64.

  In the cold air passages 31 and 32, a freezer compartment fan 12 (second fan) and a refrigerator compartment fan 23 (first fan) are arranged, respectively. As will be described in detail later, the cold air generated by the cooler 11 flows through the front portion 31 a of the cold air passage 31 by driving the freezer compartment fan 12, and is supplied to the freezer compartment 6, the ice making chamber 4, and the temperature switching chamber 3. . 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.

  The freezer compartment fan 12 is composed of an axial fan, and is disposed with the exhaust side facing forward and upward. Thereby, the cold air cooled by the lower cooler 11 can be efficiently sucked from the diagonally rear side of the freezer compartment fan 12. Further, the cool air is sent forward and upward toward the front portion 31 a of the cool air passage 31, discharged to the ice making chamber 4, and led to the upper cool air passage 32. Accordingly, it is possible to efficiently distribute the cool air upward to reduce noise and save energy.

  The refrigerating room blower 23 is composed of an axial fan, and is arranged with the axial direction directed up and down. Thereby, similarly to the above, it is possible to efficiently distribute the cool air upward to reduce noise and save energy. Moreover, the refrigerator compartment fan 23 becomes low in a height direction, and the refrigerator compartment fan 23 and the heat insulation wall 7 can be arrange | positioned in the same horizontal surface so that it may overlap in a front projection.

  Thereby, the refrigerator air blower 23 is not arrange | positioned behind the refrigerator compartment 2 with a high usage frequency, and the depth of the cold air | gas channel | path 32 can be narrowed. That is, the depth of the cold air passage 32 is formed to 80 mm, for example, on the discharge side of the refrigerator fan 23, and is gradually narrowed toward the downstream side of the air flow, for example, 12 mm. At this time, the total width in the left-right direction of the cold air passage 32 is formed wider than the vicinity of the discharge side of the refrigerator compartment fan 23. Thereby, the ventilation area of the cool air passage 32 is ensured, the cool air flow rate is maintained, and the reduction of the blowing efficiency is prevented. Therefore, the depth of the refrigerator compartment 2 in front of the narrowed cold air passage 32 is increased, and the volume of the refrigerator compartment 2 can be secured widely.

  In addition, the heat insulation wall 7 may be provided above the figure to maintain the volume of the refrigerator compartment 2, and the volume of the temperature switching chamber 3 and the ice making chamber 4 may be secured widely. Moreover, you may form the refrigerator compartment fan 23 with a centrifugal fan. At this time, the centrifugal fan may be arranged with the suction side facing downward and the discharge side facing left and right, so that the air flow is directed upward during or after air discharge.

  In addition, since the refrigerating room blower 23 is provided in a region that overlaps the heat insulating wall 7 in the vertical direction, the freezing room blower 12 is disposed at a low position away from the ice making tray 62 disposed above the ice making room 4. However, since the discharge direction of the cold air from the freezer blower 12 is the direction of the ice tray 62 at the upper front, the water stored in the ice tray 62 can be efficiently cooled.

  FIG. 4 shows a front sectional view of the refrigerator 1. The refrigerator compartment fan 23, the refrigerator compartment damper 20, and the freezer compartment fan 12 are arranged substantially side by side in the vertical direction. That is, the refrigerating room blower 23, the refrigerating room damper 20, and the freezing room blower 12 are arranged so as to overlap in the planar projection. Thereby, while the width | variety of the left-right direction of the refrigerator 1 can be narrowed, the cool air passages 31 and 32 can be shortened and volume efficiency and ventilation efficiency can be improved more.

  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 return port 22 is provided at the lower part of the freezer compartment 6 communicating with the ice making chamber 4. 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. The refrigerator compartment damper 20 is arranged behind the vertical heat insulation wall 36 so as to overlap the vertical heat insulation wall 36 in front projection.

  In order to secure a large volume of the temperature switching chamber 3, the vertical heat insulating wall 36 that separates the temperature switching chamber 3 and the ice making chamber 4 is arranged to be biased to the right side in the drawing. The cold air passage 32 branches from the outlet side of the cold room damper 20 to the left and right so that the cold air is discharged from the entire cold room 2. At this time, if the refrigerator compartment damper 20 is arranged in the center in the left-right direction, the cold air can be evenly circulated through the cold air passage 32 branched to the left and right.

  However, if the front part 31 a of the cold air passage 31 and the baffle of the refrigerator compartment damper 20 are provided behind the temperature switching chamber 3, heat is released from the temperature switching chamber 3 to the cold air in the cold air passage 31. If cold air flowing through the cold air passage 31 is generated at, for example, -23 ° C and the temperature switching chamber 3 is controlled to a temperature higher than the cold air (for example, 3 ° C, 8 ° C, or 50 ° C), heat loss increases. . For this reason, the baffle of the refrigerator compartment damper 20 and the front part 31a (see FIG. 3) of the cold air passage 31 are provided behind the vertical heat insulation wall 36, and release of heat from the temperature switching chamber 3 to the cold air is prevented. Accordingly, the refrigerator compartment damper 20 can be brought closer to the center in the left-right direction, and the cooling efficiency can be further improved.

  A refrigerator compartment outlet 2 a 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 2 a and the vegetable compartment inlet are connected by a connection path 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 46 (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 on the upper portion of the temperature switching chamber 3. A temperature switching chamber discharge damper 37 is provided at the lower right of the temperature switching chamber 3. The temperature switching chamber discharge damper 37 is disposed on the introduction ventilation path 15, and the temperature switching chamber blower 18 is disposed above the introduction ventilation path 15. When the temperature switching chamber discharge damper 37 is opened and the temperature switching chamber blower 18 is driven, cold air flows from the cooler 11 into the temperature switching chamber 3 through 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.

  A temperature switching chamber return damper 38 is provided at the lower left portion of the temperature switching chamber 3. The temperature switching chamber return damper 38 opens and closes the return ventilation path 17 extending downward, and the air in the temperature switching chamber 3 returns to the cool air passage 31 via the return ventilation path 17.

  The cooler 11 is formed by meandering refrigerant pipes 11a through which refrigerant flows, and left and right ends of the refrigerant pipes 11a are supported by end plates 11b. A large number of fins (not shown) for heat dissipation are provided in contact with the refrigerant pipe 11a.

  The air flowing through the return air passage 17 is returned to the cooler 11 from an outlet 17 a provided in the middle of the cooler 11 in the vertical direction. The cold air flowing out from the freezer compartment 6 through the freezer return port 22 returns to the lower part of the cooler 11, and the cold air flowing out from the vegetable compartment 5 and passing through the return passage 46 returns to the lower part of the cooler 11. Therefore, the cold air flowing out from each storage chamber is returned to the cooler 11 in a dispersed manner. For this reason, the frost by the cold air containing the water | moisture content which circulated through each store room and returned does not generate | occur | produce intensively, but disperse | distributes and generate | occur | produces in the whole cooler 11. Thereby, clogging of the cold air flow due to frost is prevented, and a decrease in cooling performance of the cooler 11 can be prevented.

  In addition, the cold air that has flowed through the temperature switching chamber 3 with a small volume is cooled at the upper part of the cooler 11, and the cold air that has flowed through the large-sized refrigerating chamber 3, the vegetable room 5, and the freezer room 6 Cooled by. Therefore, the cold air flowing out from the temperature switching chamber 3 is not heat exchanged with the cooler 11 more than necessary, and the heat exchange efficiency of the cooler 11 can be improved.

  Further, the cold air flowing out from the freezer compartment 6 through the freezer return port 22 is guided between the end plates 11b on both sides. The cold air flowing out from the vegetable compartment 5 is guided to the entire left and right direction inside and outside the end plates 11b on both sides of the cooler 11 via a return ventilation path 46 (see FIG. 3).

  Thereby, the heat exchange area of the cold air flowing out from the vegetable compartment 5 becomes larger than the heat exchange area of the cold air flowing out from the freezer compartment 6. Therefore, the low temperature cold air returning from the freezer compartment 6 is not cooled more than necessary, and the high temperature cold air returning from the vegetable compartment 5 is cooled by the entire cooler 11 so that the heat exchange efficiency of the cooler 11 can be further improved.

  Since the temperature switching chamber 3 may be maintained at the freezing temperature, the end plate 11b is provided with a notch (not shown) at a position facing the outlet 17a of the return ventilation path 17. Thereby, the cold air that has flowed out of the temperature switching chamber 3 can be guided between the end plates 11b on both sides to disperse the cold air. Therefore, the condensation of the cooler 11 can be dispersed and clogging can be further prevented.

  A gas-liquid separator 45 is connected to the upper part of the refrigerant pipe 11a. The gas-liquid separator 45 is arranged at the end of the ice making chamber 4 away from the temperature switching chamber 3. Thereby, even if the temperature switching chamber discharge damper 37 is disposed below the temperature switching chamber 3, it does not interfere with the gas-liquid separator 45. As a result, it is possible to avoid the interference between the refrigerator compartment damper 20 and the temperature switching chamber discharge damper 37 and arrange the refrigerator compartment damper 20 behind the vertical heat insulating wall 36.

  FIG. 5 shows a side sectional view of 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 freezer compartment 6 by heat insulation walls 7 and 35. 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. An air outlet 40 b through which air flows out from the temperature switching chamber 3 is provided at the lower part of the back plate 40.

  The temperature switching chamber blower 18 is provided facing the air inlet 40a, 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. A temperature sensor 24 that detects abnormal heating by the heater 16 is provided above the heater 16. The air outlet 40b is provided with a temperature sensor (not shown) for detecting the temperature in the temperature switching chamber 3.

  A panel heater 44 that uniformly dissipates heat from the entire surface is provided below the temperature switching chamber 3. The panel heater 44 is disposed between the heat insulating wall 35 via a gap d, and uniformly heats from the upper and lower surfaces to raise the temperature in the temperature switching chamber 3. Heat dissipation can be improved by dissipating heat from both sides. The gap d is preferably 10 to 20 mm. Thereby, while ensuring the volume in the temperature switching chamber 3, the raise of the surface temperature of the heat insulation wall 35 can be suppressed, and the heat leak to the freezer compartment 6 can be prevented.

  The storage case 43 in the temperature switching chamber 3 is made of metal and placed on the panel heater 44. Thereby, the stored item in the storage case 43 can be efficiently heated. The panel heater 44 may be pivotally supported at the rear end. Thereby, the front part of the panel heater 44 can be lifted and the lower part of the panel heater 44 can be easily cleaned.

  A temperature switching chamber return damper 38 is disposed behind the air outlet 40b. The temperature switching chamber return damper 38 has an opening 38a that opens downward and an opening 38b that opens backward, and has a baffle 38c that opens one and closes the other by rotation. The opening 38a faces the return ventilation path 17 extending downward, and the opening 38b faces the communication path 30 arranged rearward.

  The communication path 30 extends rearward and bends upward to connect the intake side of the temperature switching chamber blower 18 and the opening 38b. Since the communication path 30 is arranged behind the temperature switching chamber return damper 38, the intake side of the temperature switching chamber blower 18 can be arranged behind the temperature switching chamber return damper 38. Thereby, the depth of the temperature switching chamber 3 can be widened.

  When the opening 38b of the temperature switching chamber return damper 38 is opened, the air flowing out from the air outlet 40b is guided to the intake side of the temperature switching chamber blower 18, and the return ventilation path 17 is closed. Therefore, when the opening 38 a and the temperature switching chamber discharge damper 37 (see FIG. 4) are closed, the air in the temperature switching chamber 3 can be circulated by driving the temperature switching chamber blower 18. In the following description, when the opening 38a is opened and the opening 38b is closed, the temperature switching chamber return damper 38 is open, and when the opening 38a is closed and the opening 38b is opened, the temperature is switched. The chamber return damper 38 is in a closed state.

  FIG. 9 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 ice making room 4 is arranged in series with the freezer room 6, and the vegetable room 5 is arranged in series with the refrigerator room 2. The cold air generated by the cooler 11 is sent to the ice making chamber 4 by driving the freezer blower 12. The cold air sent to the ice making room 4 flows through the ice making room 4 and the freezing room 6, flows out from the freezing room return port 22, and returns to the cooler 11. As a result, the ice making chamber 4 and the freezing chamber 6 are cooled.

  The cold air branched on the exhaust side of the freezer compartment fan 12 is sent to the refrigerating compartment 2 and the chilled compartment 21 through the refrigerating compartment damper 20 by driving the refrigerating compartment blower 23. The cold air that has flowed through the refrigerator compartment 2 and the chilled compartment 21 and exchanged heat with the stored material flows into the vegetable compartment 5 through the connection path 34. The cold air flowing into the vegetable compartment 5 circulates in the vegetable compartment 5 and returns to the cooler 11 through the return ventilation path 46. 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.

  Further, the cold air branched on the exhaust side of the freezer compartment fan 12 flows into the temperature switching chamber 3 through the temperature switching chamber discharge damper 37 by driving the temperature switching chamber blower 18. The cold air that has flowed into the temperature switching chamber 3 flows through the temperature switching chamber 3, flows out of the temperature switching chamber return damper 38, and returns to the cooler 11 through the return ventilation path 17. 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 or the panel heater 44 may be energized to switch the temperature from the frozen room temperature to the refrigerated room temperature. Thereby, it can switch to desired room temperature rapidly.

  Further, by energizing the heater 16 and the panel heater 44, the room 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 higher than the normal temperature. Thereby, temporary heat insulation, warm cooking, etc. of the cooked heated food can be performed.

  When the temperature switching chamber 3 is switched to the high temperature side, the opening 38a of the temperature switching chamber return damper 38 and the temperature switching chamber discharge damper 37 are closed. Then, the temperature switching chamber blower 18 and the heater 16 are driven to shift to a temperature raising period in which the temperature in the temperature switching chamber 3 is raised.

  When the temperature switching chamber 3 is heated to a predetermined temperature, the temperature switching chamber blower 18 and the heater 16 are stopped, and the panel heater 44 is driven. Thereby, it transfers to the heat retention period which maintains the temperature switching chamber 3 at predetermined temperature, and heats a stored thing. During the heat retention period, the panel heater 44 is turned on and off in the vicinity of the set temperature to maintain the set temperature.

  By driving the heater 16 and the panel heater 44 having a large capacity during the temperature raising period, the temperature can be quickly raised to a desired room temperature. Further, since the temperature switching chamber blower 18 and the heater 16 are stopped and the panel heater 44 having a small capacity is driven during the heat retention period, the power can be saved and the room can be easily maintained at a uniform temperature. Moreover, since the temperature switching chamber blower 18 is stopped, hot air does not directly hit the stored item, and drying of the stored item can be prevented or reduced.

  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 food poisoning 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 refrigerator compartment 2, the temperature switching chamber 3, the freezer compartment 6, and the vegetable compartment 5 are arranged in this order from the top, the width of the freezer compartment 6 and the vegetable compartment 5 is widened, and the convenience of the refrigerator 1 is improved. To do. In addition, since the temperature switching chamber 3 and the freezer compartment 6 are adjacent to each other, the cool air path from the cooler 11 provided close to the freezer compartment 6 to the temperature switching chamber 3 is shortened. For this reason, the temperature rise of the cold air supplied to the temperature switching chamber 3 maintained at the freezing temperature can be prevented, and the cooling efficiency can be improved.

  Moreover, the convenience of the refrigerator 1 improves by arrange | positioning the refrigerator compartment 2 with a high usage frequency in the uppermost stage. In addition, since the vegetable compartment 5 is disposed below the refrigerator compartment 2, the cold air in the refrigerator compartment 2 can be easily guided to the vegetable compartment 5 by its own weight, and a reduction in blowing efficiency can be prevented. Furthermore, since the temperature switching chamber 3 is disposed above the freezer compartment 6 and the vegetable compartment 3, it is possible to easily put in and out a heavy and hot pan or the like while the user is standing. Therefore, the convenience of the refrigerator 1 can be further improved, and the risk of turning over the pan or the like can be reduced, thereby improving safety.

  In addition, the heat insulating wall 7 that separates the ice making chamber 4 and the refrigerator compartment 3 (cooling chamber) constituting a part of the freezing compartment 6 below the freezing point and the refrigerator compartment fan 23 (first fan) overlap each other in front projection. Since it arrange | positioned, the refrigerator compartment fan 23 and the refrigerator compartment 3 approach and are arrange | positioned. For this reason, even if the volume of the refrigerator compartment 3 is large, the difference of the strength of the cold airflow discharged between the outlet near the refrigerator fan 23 and the outlet far from the refrigerator 23 becomes small. Therefore, the temperature distribution in the refrigerator compartment 3 can be made uniform. Moreover, since the refrigerator compartment fan 23 is not arrange | positioned in the refrigerator compartment 3, the volume in the refrigerator compartment 3 can be ensured widely, and the volumetric efficiency of the refrigerator 1 can be improved. In addition, the volume of other storage chambers, such as the temperature switching chamber 3, may be ensured widely by maintaining the volume of the refrigerator compartment 3.

  Next, FIG. 10 is a side sectional view showing the refrigerator of the second embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. In this embodiment, the refrigerating room blower 23 is disposed so that the exhaust side is inclined rearward and upward. Other parts are the same as those in the first embodiment.

  According to this embodiment, the same effect as that of the first embodiment can be obtained. In addition, the cold air generated by the cooler 11 is guided to the front portion 31 a of the cold air passage 31 by the freezer blower 12, and is led to the intake side of the refrigerating room blower 23 through the refrigerating room damper 20. The cold air passage 32 is disposed above the cold room blower 23 and behind the cold room damper 20.

  For this reason, the cool air is smoothly guided from the front portion 31 a to the cool air passage 32 by the refrigerator compartment fan 23. Therefore, the vortex of the cold airflow is not easily generated, and the pressure loss is also reduced, so that the blowing efficiency can be improved to save energy and the generation of noise can be suppressed.

  Next, FIGS. 11 and 12 are a front view and a right side sectional view showing the refrigerator of the third embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. In the present embodiment, the refrigerator compartment fan 23 (see FIG. 3) is omitted from the first embodiment, and the arrangement of the refrigerator compartment fan 12 and the refrigerator compartment damper 20 is different. Other parts are the same as those in the first embodiment.

  The freezer compartment blower 12 (first blower) is disposed at the right end of the refrigerator main body, and partially overlaps the heat insulating wall 7 in the front projection and the lower part extends to the freezer compartment 6 side. Thereby, the cool air passage 31 can take a wide space with a long distance between the cooler 11 and the freezer compartment fan 12. For this reason, this space part functions as a negative pressure chamber on the suction side of the freezer compartment blower 12, and in the vicinity of the upper portion of the cooler 11, the cold airflow is substantially uniform in the front-rear direction and the left-right direction. As a result, the cool air that exchanges heat with the cooler 11 circulates uniformly in the front-rear direction and the left-right direction, and the heat exchange efficiency of the cooler 11 is improved.

  Moreover, the freezer compartment fan 12 is arrange | positioned behind the ice-making tray 62 distribute | arranged to the ice-making chamber 4 upper part, and blows toward the ice-making tray 62 of the front. For this reason, the ice tray 62 can be sufficiently cooled, and the ice making can be completed quickly. Depending on the positional relationship between the freezer blower 12 and the ice tray 62, the freezer blower 12 may be disposed toward the ice tray 62. For example, the freezer compartment fan 12 may be disposed obliquely upward or obliquely downward, or may be disposed slightly inclined in the left-right direction.

  Moreover, in the case shown in FIG. 11, the freezer compartment blower 12 may be arranged so that the discharge direction of the cool air is slightly directed from the center in the left-right direction. Thereby, the ventilation efficiency to the cool air cooler distributor (for example, the cold room damper 20) and the temperature switching chamber discharge damper 37 is improved.

  The refrigerator compartment damper 20 is adjacent to the left side of the freezer compartment fan 12 and is disposed so as to overlap the heat insulating wall 7 in front projection. Accordingly, the depth of the ice making chamber 4 can be secured widely to improve the volumetric efficiency, and the space below the refrigerator compartment damper 20 can be secured widely to easily increase the distance between the cooler 11 and the freezer compartment fan 12. Can do. It should be noted that the refrigerator compartment damper 20 may be provided close to the heat insulating wall 7 in the vertical direction.

  According to this embodiment, as in the first embodiment, the heat insulating wall 7 that separates the freezer compartment 6 having the ice making chamber 4 from the refrigerator compartment 3 (cooling chamber) and the freezer compartment fan 12 (first fan) are front-facing. Since it arrange | positions in the position which overlaps in projection, the freezer compartment fan 12 and the refrigerator compartment 3 approach and are arrange | positioned. For this reason, even if the volume of the refrigerator compartment 3 is large, the difference of the strength of the cold airflow discharged between the discharge outlet close to the freezer blower 12 and the discharge outlet far from the freezer fan 12 becomes small. Therefore, the temperature distribution in the refrigerator compartment 3 can be made uniform. Moreover, since the freezer compartment fan 12 is not arranged in the refrigerator compartment 3, the volume in the refrigerator compartment 3 can be secured widely and the volume efficiency of the refrigerator 1 can be improved.

  In addition, when the freezer compartment 6 is expanded by omitting the temperature switching chamber 3, the refrigerator compartment damper 20 and the freezer compartment blower 12 may be shifted to the left and disposed at the approximate center in the left-right direction. Thereby, while the suction efficiency of the freezer compartment fan 12 improves more, a cold airflow is made more uniform and the heat exchange efficiency of the cooler 11 further improves.

  At this time, the cooler 11, the defrost heater 33 and the soup tray 63 may be shifted upward, and the gas-liquid separator 65 may be disposed on the right side of the freezer compartment fan 12. And if the heat insulation wall 8 is shifted and provided so that the required volume of the freezer compartment 6 may be ensured, the vegetable compartment 5 can be made high and the volume of the vegetable compartment 5 can be increased. Thereby, it becomes possible to provide a vertically long case for vertical vegetables on the door side, and a long vegetable (for example, leek, radish) can be stored upright.

  Moreover, the volume of the vegetable compartment 5 can be further increased if the drain pipe 64 and the return ventilation path 46 are provided to be shifted rearward and the storage case 43 is extended rearward. As a result, the whole large vegetable (for example, watermelon) can also be stored in the storage case 43.

  The drain pipe 64 may be shifted rearward without shifting the heat insulating wall 8 from the position shown in FIG. Thereby, the volume of the freezer compartment 6 can be increased and the volumetric efficiency of the refrigerator 1 can be improved. At this time, the thickness of the heat insulating material is increased by a part of the amount by which the drain pipe 64 is displaced rearward.

  In the first to third embodiments, 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, a passage opening / closing mechanism (for example, a damper) is provided so that the freezer compartment return port 22 is closed. Also good. Thereby, it is possible to prevent the hot air from flowing backward from the freezer return port 22 into the freezer compartment 6 by driving the temperature switching chamber blower 18.

  ADVANTAGE OF THE INVENTION According to this invention, it can utilize for the refrigerator provided with the air blower which sends out cool air to a storage room.

The front view which shows the refrigerator of 1st Embodiment of this invention. The right view which shows the refrigerator of 1st Embodiment of this invention. Sectional drawing on the right side showing the refrigerator according to the first embodiment of the present invention. Front sectional drawing which shows the refrigerator of 1st Embodiment of this invention. Cross section of the right side showing the temperature switching chamber of the refrigerator of the first embodiment of the present invention The side view which shows the machine room of the refrigerator of 1st Embodiment of this invention The rear view which shows the machine room of the refrigerator of 1st Embodiment of this invention The top view which shows the machine room of the refrigerator of 1st Embodiment of this invention The cold air circuit diagram which shows the flow of the cold air of the refrigerator of 1st Embodiment of this invention Sectional drawing on the right side showing the refrigerator of the second embodiment of the present invention Front sectional drawing which shows the refrigerator of 3rd Embodiment of this invention. Sectional drawing on the right side showing the refrigerator of the third 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 Freezer room 7, 8, 35 Insulation wall 9 Door 11 Cooler 11a Refrigerant pipe 11b End plate 12 Freezer room blower 15 Inlet ventilation path 16 Heater 17 Return ventilation path 18 Temperature switching room blower 20 Refrigeration room damper 22 Freezing room return port 23 Refrigeration room blower 24 Temperature sensor 36 Vertical heat insulation wall 37 Temperature switching room discharge damper 38 Temperature switching room return damper 38a, 38b Opening 38c Baffle 44 Panel heater 45 Gas-liquid Separator 50 Machine room 50a Back cover 51 Electrical part 52 Electrical box 53 Control board 54 Lead wire holding part 57 Compressor 60 Condenser fan

Claims (5)

A freezing room maintained below freezing;
A cooling chamber disposed above the freezing chamber via an insulating wall;
A cooler that is arranged on the back of the freezer and generates cold air;
A cold air passage for the freezer compartment for guiding cold air to the freezer compartment;
A cold air passage for the cooling chamber that communicates with the cold air passage for the freezing chamber and guides the cold air to the cooling chamber;
A cold air distributor for distributing the cold air flowing through the freezer compartment cold air passage to the cold compartment cold air passage;
A first blower for sending cold air to the cooling chamber through the cooling chamber cold air passage,
In the front projection, the heat insulating wall and the first blower are arranged at overlapping positions,
The cold air distributor is disposed near the lower part of the first blower,
The freezing room has an ice making room for making ice at the top, and a temperature switching room that can be kept at a higher temperature than the cold air flowing through the freezing room cold air passage by switching the room temperature is provided on the side of the ice making room,
The temperature switching chamber and the ice making chamber are separated by a vertical heat insulating wall made of a heat insulating material, and the cold air distributor is disposed at a position overlapping the vertical heat insulating wall in front projection, avoiding the back of the temperature switching chamber. ,
While disposing the first blower in the cold air passage for the cooling chamber, a second blower for sending cold air to the freezer compartment is provided in the cold air passage for the freezing chamber,
The second blower is disposed near the lower part of the cold air distributor,
In front projection, a part of the second blower is arranged at a position overlapping the vertical heat insulation wall while avoiding the back of the temperature switching chamber, and the remaining part of the second blower is arranged facing the ice making chamber. A refrigerator characterized by that. The refrigerator according to claim 1, wherein the first blower, the cold air distributor, and the second blower are arranged side by side in the vertical direction. 3. The refrigerator according to claim 1, wherein one of the first and second blowers is disposed with an exhaust side facing upward. 4. The refrigerator according to claim 3, wherein the first blower is disposed in a vertical direction with an exhaust side facing upward. The refrigerator according to claim 3, wherein the first blower is disposed with the exhaust side facing rearward and upward, and the second blower is disposed with the exhaust side facing forward and upward.

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