JP2008138981A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator wherein the storage capacity of a frequently-used refrigerating chamber or a specified low temperature chamber arranged on the lower side of the refrigerating chamber is increased to prevent the flow of warm air thereinto during defrosting, thus preventing the occurrence of frosting or freezing in the refrigerator. <P>SOLUTION: A damper 16 is arranged in a return air path in a heat insulating section having a higher temperature than a freezing temperature zone out of a plurality of heat insulating sections having freezing-to-refrigerating temperature zones formed in a refrigerator body 1 by a plurality of partition walls. Thereby, the capacity of the frequently-used specified low temperature chamber 17 arranged on the lower side of the refrigerating chamber, e.g., can be increased. This prevents the flow of warm air from a cooler 7 during defrosting and reduces a temperature difference between the upstream and downstream sides of the damper 16 to prevent the frosting or freezing of the damper 16 itself. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a refrigerator provided with a damper device.

  In recent years, refrigerators with various layouts have been put on the market (for example, see Patent Document 1).

FIG. 10 shows a conventional refrigerator described in Patent Document 1. As shown in FIG. As shown in FIG. 10, the refrigerator main body 101, the refrigerator compartment 102 provided in the upper part of this main body, the specific low temperature chamber 117 provided in the lower part of the refrigerator compartment, and the freezing temperature zone provided under the refrigerator compartment. A switching chamber 103 that can be switched to a temperature zone such as refrigeration, vegetables, chilled, etc., an ice making chamber 104 provided in parallel to the switching chamber 103 under the refrigeration chamber 102, and a vegetable chamber 106 provided in the lower part of the main body And a freezing room 105 provided between the ice making room 104 and the vegetable room 106, a cooler 107 that generates cold air, and a cold air blower fan 108 that supplies the cold air to each room. A freezer discharge air passage (not shown) for supplying cold air to the freezer compartment 105, a freezer return air passage (not shown) for returning the cold air from the freezer compartment 105 to the cooler 107, and an ice making room Made to supply cold air to 104 A discharge air passage 114 for the room, a return air passage 115 for returning the cool air from the ice making chamber 104 to the cooler 107, a discharge air passage 112 for the switching chamber for supplying cold air to the switching chamber 103, and the switching chamber 103 A return air passage 113 for switching room for returning the cold air to the cooler 107, a discharge air passage 110 for supplying the cold air to the refrigerating chamber 102, and a damper 116 for controlling the air volume to the refrigerating chamber 102, The return air path 111 for the refrigerator compartment for returning the cold air sent to the refrigerator compartment 102 to the vegetable compartment 106, and the return air passage for the vegetable compartment for returning the cold air sent to the vegetable compartment 106 to the cooler 107 (see FIG. (Not shown).
JP 2000-205738 A

  However, in the above-described conventional configuration, a damper is disposed in the cold room discharge air passage for cooling the cold room, and the damper is disposed on the back of the cold room having a high frequency of use or a specific low temperature room disposed in the lower part of the cold room. There is a problem that a space is required for the arrangement and the capacity is reduced. In addition, as refrigerators with various layouts are put on the market, it becomes difficult to arrange temperature control dampers in the refrigerator compartment if the discharge air path from the cooler to the refrigerator compartment becomes complicated. There is a problem that the storage capacity is reduced and the damper is disposed. Further, when a damper is installed on the discharge side of the air passage, there is a problem that the pressure loss increases due to the dynamic pressure and the air volume decreases. Moreover, the damper installed on the discharge side cannot completely stop the inflow of warm air rising from the suction side having a low resistance at the time of defrosting, and has a problem of frost formation and freezing in the warehouse.

  The present invention solves the above-mentioned conventional problems, and increases the storage capacity of the cold room and the specific low temperature room below the cold room, and prevents inflow of warm air during defrosting, It aims at providing the refrigerator which prevents generation | occurrence | production of freezing.

  In order to solve the above-described conventional problems, the refrigerator of the present invention includes a refrigerator main body, a plurality of heat insulation sections configured in a temperature range from freezing to refrigeration by a plurality of partition walls in the refrigerator main body, and a rear portion of the refrigerator main body. A cooler installed in the vicinity of the cooler, a cool air blower fan disposed in the vicinity of the cooler, a discharge air passage that communicates the cool air blower fan and the heat insulation section, and a return air passage that communicates the heat insulation compartment and the cooler. And a damper device is provided in the return air passage of the heat insulation section higher than the freezing temperature zone in the heat insulation section.

  This facilitates the arrangement of the damper device that is normally arranged in the suction air passage that is simplified, not on the complicated discharge side. Further, by disposing a damper on the suction side, it is possible to reduce the pressure loss of the air volume into the interior. In addition, by disposing a damper on the suction side where the air path resistance is small, it is possible to prevent inflow of warm air from the cooler during defrosting.

  In the refrigerator of the present invention, a damper is disposed in the return air passage of the heat insulation section higher in temperature than the freezing temperature band among the plurality of heat insulation sections configured in the temperature range from freezing to refrigeration by a plurality of partition walls on the refrigerator body. As a result, for example, the size and capacity of the case of the specific low temperature room, which is frequently used, such as a chilled box disposed in the lower part of the refrigerating room, can be increased. Also, by arranging a damper on the suction side, the pressure loss of the air volume into the cabinet can be reduced, the air volume in the entire refrigerator can be increased, and the number of rotations of the fan for producing the same air volume can be reduced. Since it can be set low, noise can be reduced. In addition, by installing a damper on the suction side with low air path resistance, it is possible to prevent the warm air from flowing from the cooler during defrosting, and the temperature difference between the upstream side and the downstream side of the damper becomes small, and the damper itself Frosting and freezing can be prevented.

  The invention according to claim 1 is a refrigerator main body, a plurality of heat insulating sections configured in a temperature range from freezing to refrigeration by a plurality of partition walls in the refrigerator main body, and cooling installed on a back surface portion of the refrigerator main body. A cool air blower fan disposed near the cooler, a discharge air passage communicating the cool air blow fan and the heat insulation compartment, and a return air passage communicating the heat insulation compartment and the cooler. And a damper is disposed in the return air path of the heat insulation section higher than the freezing temperature zone in the heat insulation section, so that it is not in the complicated discharge side but in the normally simplified suction air path. It is easy to dispose the damper to be disposed, and for example, the size and capacity of the case of the specific low-temperature chamber that is frequently used such as a chilled disposed at the lower part of the refrigerator compartment can be increased. Also, by arranging a damper on the suction side, the pressure loss of the air volume into the cabinet can be reduced, the air volume in the entire refrigerator can be increased, and the number of rotations of the fan for producing the same air volume can be reduced. Since it can be set low, noise can be reduced. In addition, by installing a damper on the suction side with low air path resistance, it is possible to prevent the warm air from flowing from the cooler during defrosting, and the temperature difference between the upstream side and the downstream side of the damper becomes small, and the damper itself Frosting and freezing can be prevented.

  Invention of Claim 2 is set as the layout of the said refrigerator main body which adjoins at least 2 or more other heat insulation divisions which are higher temperature than the freezing temperature zone heat insulation division among the said heat insulation divisions in the invention of Claim 1. By arranging a damper in the return air passage of the high temperature heat insulation section, in the refrigerator having the above layout, for example, a case of a specific cold room having a high use frequency such as a chilled disposed in a lower part of the refrigerator room. The size and capacity can be increased. In addition, by arranging a damper on the suction side, the pressure loss of the air volume into the cabinet can be reduced, and the air volume in the entire refrigerator can be increased, so the rotation speed of the fan to produce the same air volume Can be set low so that noise reduction can be achieved. In addition, by installing a damper on the suction side with low air path resistance, it is possible to prevent the warm air from flowing from the cooler during defrosting, and the temperature difference between the upstream side and the downstream side of the damper becomes small, and the damper itself Frosting and freezing can be prevented.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, when the damper is disposed in the refrigeration temperature zone heat insulation section, the shape of the discharge air passage is complicated in various layouts. However, it is possible to easily dispose the damper, and for example, it is possible to increase the size and capacity of the case of the specific low-temperature chamber that is frequently used such as a chilled disposed at the lower part of the refrigerator compartment. Furthermore, when a damper is disposed in the partition wall of the heat insulating section, the capacity in the corresponding heat insulating section can be further increased, and the ineffective space can be reduced, so that the capacity in the warehouse can be further exhibited.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the damper is disposed at a position that is lower than or equal to the position of the cold air blowing fan disposed in the vicinity of the cooler. By doing so, while preventing the inflow of warm air from the cooler during defrosting, the temperature rise of the frosted cooler can be promoted and defrosting can be performed reliably. Further, since the temperature difference can be reduced in the air path before and after the damper is provided, frosting and freezing of the damper itself can be prevented.

  According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the damper is controlled to be opened and closed by a temperature sensor installed in the return air path. The temperature sensor installed on the upstream side of the damper can reliably detect the temperature inside the cabinet, so that the sensor can be prevented from being erroneously detected due to temporary rises in the temperature by opening and closing the door or inserting hot food. be able to.

  According to a sixth aspect of the present invention, in the invention according to any one of the first to fifth aspects, the inflow of warm air from the cooler during defrosting can be ensured by closing the flap of the damper during defrosting. Can be prevented.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a front view of a refrigerator according to Embodiment 1 of the present invention. FIG. 2 is a front view showing the air path of the refrigerator according to Embodiment 1 of the present invention. FIG. 3 is a front view showing the air path of the refrigerator when the damper according to Embodiment 1 of the present invention is positioned lower than the cold air blowing fan.

  As shown in FIGS. 1, 2, and 3, the refrigerator main body 1, the refrigerating room 2 provided at the upper part of the main body, the specific low temperature room 17 provided at the lower part of the refrigerating room, and the bottom of the refrigerating room 2 A switching chamber 3 that can be switched from a freezing temperature zone to a temperature zone such as refrigeration, vegetables, and chilled, an ice making chamber 4 that is provided in parallel to the switching chamber 3 under the refrigeration chamber 2, and a lower portion of the main body. The prepared vegetable room 6, the switching room 3 installed in parallel, the freezer room 5 provided between the ice making room 4 and the vegetable room 6, the cooler 7 for generating cold air, and the cold air are supplied to the respective rooms. A freezing chamber discharge air passage (not shown) for supplying cold air to the freezer compartment 5, and a freezer compartment return air passage for returning the cold air from the freezer compartment 5 to the cooler 7. (Not shown), an ice making chamber discharge air passage 14 for supplying cold air to the ice making chamber 4, and returning the cold air from the ice making chamber 4 to the cooler 7. An ice making chamber return air passage 15, a switching chamber discharge air passage 12 for supplying cold air to the switching chamber 3, a switching chamber return air passage 13 for returning cold air from the switching chamber 3 to the cooler 7, The refrigeration chamber discharge air passage 10 for supplying cold air to the refrigerating chamber 2, the refrigerating chamber return air passage 11 for returning the cold air sent to the refrigerating chamber 2 to the vegetable compartment 6, and the vegetable compartment 6. It comprises a vegetable room return air passage (not shown) for returning the cool air to the cooler 7. At this time, a damper 16 is installed in the refrigerator return air passage 11.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  The cold air cooled by the cooler 7 is directly circulated by the cold air blower fan 8 to cool the refrigerator room 2, the ice making room 4, the switching room 3, and the freezer room 5. Cool the vegetable compartment. By installing the damper 16 in the refrigerating room return air passage 11, even in the case of the complicated refrigerating room discharge air passage 10, the case of the specific low temperature room 17 having a high use frequency such as a chilled disposed in the lower part of the refrigerating room Can be increased in size and capacity.

  Moreover, by disposing a damper on the suction side, the pressure loss of the air volume into the cabinet can be reduced, the air volume in the entire refrigerator can be increased, and the cold air blowing fan 8 for producing the same air volume can be provided. Since the rotation speed can be set low, noise reduction can be achieved.

  In addition, by disposing the damper 16 on the suction side where the airflow resistance is small, the inflow of warm air from the cooler 7 at the time of defrosting can be prevented, and the temperature difference between the upstream side and the downstream side of the damper 16 becomes small. It is possible to prevent frosting and freezing of the damper 16 itself.

  In addition, while arrange | positioning the damper 16 in the position equivalent or lower than the position of the cool air ventilation fan 8 arrange | positioned in the vicinity of the cooler 7, while preventing inflow of warm air from the cooler 7 at the time of defrosting Even when the cooler 7 is frosted due to the inflow of outside air by opening and closing the door, etc., the temperature rise of the cooler 7 can be promoted and defrosting can be performed reliably.

  Moreover, since the temperature sensor can reliably detect the temperature in the refrigerator by installing the refrigerator temperature detection sensor on the upstream side of the damper 16 in the return air passage 11 of the refrigerator compartment, the door is opened and closed and hot food is added. For example, it is possible to prevent erroneous detection of the sensor with respect to a temporary temperature rise in the storage.

  Further, by closing the flap of the damper 16 during defrosting, it is possible to reliably prevent the inflow of warm air from the cooler 7 during defrosting.

(Embodiment 2)
Embodiment 2 according to the present invention will be described with reference to the drawings.

  In addition, about the same structure and effect | action as Embodiment 1, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

  FIG. 4 is a front view of a refrigerator according to Embodiment 2 of the present invention. FIG. 5 is a front view showing the air path of the refrigerator according to the second embodiment of the present invention. FIG. 6 is a front view showing the air path of the refrigerator when the damper according to Embodiment 2 of the present invention is positioned lower than the cool air blower fan.

  4, 5, and 6, the refrigerator main body 1, the refrigerating chamber 2 provided at the upper portion of the main body, the specific low temperature chamber 17 provided at the lower portion of the refrigerating chamber, and the vegetable room provided at the lower portion of the main body 6, a freezing room 5 provided between the refrigerating room 2 and the vegetable room 6, a cooler 7 for generating cold air, and a cold air blowing fan 8 for supplying the cold air to each room. Supplying cold air to the freezer compartment discharge air passage (not shown) for supplying cold air, the freezer compartment return air passage (not shown) for returning the cold air from the freezer compartment 5 to the cooler 7, and the refrigerator compartment 2 The discharge air passage 10 for the refrigerator compartment, the return air passage 11 for the refrigerator compartment for returning the cool air sent to the refrigerator compartment 2 to the vegetable compartment 6, and the cool air sent to the vegetable compartment 6 to the cooler 7 It is composed of a vegetable room return air passage (not shown) for return. And the damper 16 is installed in the return air path 11 for refrigerator compartments.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  The cold air cooled by the cooler 7 is directly circulated by the cold air blower fan 8 to cool the refrigerator compartment 2 and the freezer compartment 5, and further the vegetable compartment 6 is cooled from the refrigerator return air passage 11 through the damper 16. . By installing the damper 16 in the refrigerating room return air passage 11, the size and capacity of the case of the specific low temperature room 17 that is frequently used such as a chilled disposed in the lower part of the refrigerating room 2 can be increased.

  Further, by disposing the damper 16 on the suction side, it is possible to reduce the pressure loss of the air volume into the cabinet, to increase the air volume in the entire refrigerator, and to supply the same air volume. Since the number of rotations can be set low, noise reduction can be achieved.

  In addition, by disposing the damper 16 on the suction side where the airflow resistance is small, the inflow of warm air from the cooler 7 at the time of defrosting can be prevented, and the temperature difference between the upstream side and the downstream side of the damper 16 becomes small. It is possible to prevent frosting and freezing of the damper 16 itself.

  In addition, by accommodating the damper 16 of the present embodiment in the partition wall, the ineffective space can be reduced and the capacity in the freezer compartment 5 can be increased.

  In addition, by arranging the damper 16 of the present embodiment around the cooler 7, it is possible to collect parts around the cooler 7, so that a compact design with reduced ineffective space can be performed.

  In addition, by disposing the damper 16 on the suction side where the airflow resistance is small, the inflow of warm air from the cooler 7 at the time of defrosting can be prevented, and the temperature difference between the upstream side and the downstream side of the damper 16 becomes small. It is possible to prevent frosting and freezing of the damper 16 itself.

  Further, by disposing the damper 16 at a position that is equal to or lower than the position of the cool air blowing fan 8 disposed in the vicinity of the cooler 7, it is possible to prevent inflow of warm air from the cooler 7 at the time of defrosting. Even when the cooler 7 is frosted due to the inflow of outside air by opening and closing the door, etc., the temperature rise of the cooler 7 can be promoted and defrosting can be performed reliably.

  Moreover, since the temperature sensor can reliably detect the temperature in the refrigerator by installing the refrigerator temperature detection sensor on the upstream side of the damper 16 in the return air passage 11 of the refrigerator compartment, the door is opened and closed and hot food is added. For example, it is possible to prevent erroneous detection of the sensor with respect to a temporary temperature rise in the storage.

  Further, by closing the flap of the damper 16 during defrosting, it is possible to reliably prevent the inflow of warm air from the cooler during defrosting.

(Embodiment 3)
FIG. 7 is a front view of a refrigerator according to Embodiment 3 of the present invention. FIG. 8 is a front view showing the air path of the refrigerator according to the third embodiment of the present invention. FIG. 9 is a front view showing the air path of the refrigerator when the damper according to Embodiment 3 of the present invention is positioned lower than the cool air blower fan.

  As shown in FIGS. 7, 8, and 9, the refrigerator main body 1, the refrigerating room 2 provided at the top of the main body, the specific low temperature room 17 provided at the lower part of the refrigerating room, and the bottom of the refrigerating room 2 A switching chamber 3 that can be switched from a freezing temperature zone to a temperature zone such as refrigeration, vegetables, and chilled, an ice making chamber 4 that is provided in parallel to the switching chamber 3 under the refrigeration chamber 2, and a lower portion of the main body. The freezing chamber 5 provided, the switching chamber 3 installed in parallel, the vegetable chamber 6 provided between the ice making chamber 4 and the freezing chamber 5, the cooler 7 for generating cold air, and the cold air are supplied to each chamber. A freezing chamber discharge air passage (not shown) for supplying cold air to the freezer compartment 5, and a freezer compartment return air passage for returning the cold air from the freezer compartment 5 to the cooler 7. (Not shown), an ice making chamber discharge air passage 14 for supplying cold air to the ice making chamber 4, and returning the cold air from the ice making chamber 4 to the cooler 7. An ice making chamber return air passage 15, a switching chamber discharge air passage 12 for supplying cold air to the switching chamber 3, a switching chamber return air passage 13 for returning cold air from the switching chamber 3 to the cooler 7, Refrigeration room discharge air passage 10 for supplying cold air to the refrigerating room 2 and a return for refrigerating room for sending a part of the cold air sent to the refrigerating room 2 to the vegetable room 6 and returning the rest to the cooler 7. It is composed of an air passage 11. And the damper 16 is installed in the return air path 11 for refrigerator compartments.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  The refrigeration room 2, the ice making room 4, the switching room 3, and the freezing room 5 are cooled by directly circulating the cold air cooled by the cooler 7 with the cold air blower fan 8, and a part of the cold air is returned from the return air passage 11 for the cold room. The vegetable compartment 6 is cooled by diversion. By installing the damper 16 in the refrigerating room return air passage 11, even in the case of the complicated refrigerating room discharge air passage 10, the case of the specific low temperature room 17 having a high use frequency such as a chilled disposed in the lower part of the refrigerating room Can be increased in size and capacity.

  Moreover, by disposing a damper on the suction side, the pressure loss of the air volume into the cabinet can be reduced, the air volume in the entire refrigerator can be increased, and the cold air blowing fan 8 for producing the same air volume can be provided. Since the rotation speed can be set low, noise reduction can be achieved.

  In addition, by disposing the damper 16 on the suction side where the airflow resistance is small, the inflow of warm air from the cooler 7 at the time of defrosting can be prevented, and the temperature difference between the upstream side and the downstream side of the damper 16 becomes small. It is possible to prevent frosting and freezing of the damper 16 itself.

  In addition, while arrange | positioning the damper 16 in the position equivalent or lower than the position of the cool air ventilation fan 8 arrange | positioned in the vicinity of the cooler 7, while preventing inflow of warm air from the cooler 7 at the time of defrosting Even when the cooler 7 is frosted due to the inflow of outside air by opening and closing the door, etc., the temperature rise of the cooler 7 can be promoted and defrosting can be performed reliably.

  Moreover, since the temperature sensor can reliably detect the temperature in the refrigerator by installing the refrigerator temperature detection sensor on the upstream side of the damper 16 in the return air passage 11 of the refrigerator compartment, the door is opened and closed and hot food is added. For example, it is possible to prevent erroneous detection of the sensor with respect to a temporary temperature rise in the storage.

  Further, by closing the flap of the damper 16 during defrosting, it is possible to reliably prevent the inflow of warm air from the cooler 7 during defrosting.

  As described above, the refrigerator according to the present invention has a return air passage in a heat-insulating section having a temperature higher than the freezing temperature zone among a plurality of heat-insulating compartments configured in a temperature range from freezing to refrigeration by a plurality of partition walls in the refrigerator body. A damper is disposed inside, and the present invention can be applied to general uses of refrigeration equipment including a damper device.

Front view of the refrigerator according to Embodiment 1 of the present invention The front view which shows the air path of the refrigerator of the embodiment The front view which shows the air path of the refrigerator which made the damper the position lower than a cold air ventilation fan in the embodiment Front view of a refrigerator according to Embodiment 2 of the present invention The front view which shows the air path of the refrigerator of the embodiment The front view which shows the air path of the refrigerator which made the damper the position lower than a cold air ventilation fan in the embodiment Front view of a refrigerator according to Embodiment 3 of the present invention The front view which shows the air path of the refrigerator of the embodiment The front view which shows the air path of the refrigerator which made the damper the position lower than a cold air ventilation fan in the embodiment Front view showing the air path of a conventional refrigerator

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Refrigerator body 2 Refrigeration room 3 Switching room 4 Ice making room 5 Freezing room 6 Vegetable room 7 Cooler 8 Cold air blower fan 10 Refrigerating room discharge air path 11 Refrigerating room return air path 12 Switching room discharge air path 13 For switching room Return air passage 14 Discharge air passage for ice making chamber 15 Return air passage for ice making chamber 16 Damper 17 Specific low temperature chamber

Claims (6)

  In the vicinity of the refrigerator, a plurality of heat-insulating sections configured in a temperature zone from freezing to refrigeration by a plurality of partition walls in the refrigerator body, a cooler installed on the back surface of the refrigerator body, and A cooling air blower fan disposed; a discharge air passage communicating the cold air blower fan and the heat insulation compartment; and a return air passage communicating the heat insulation compartment and the cooler; A refrigerator characterized in that a damper is disposed in the return air passage of the heat insulation section having a temperature higher than that of a belt.   A layout of the refrigerator main body adjacent to at least two or more other heat insulation compartments that are higher in temperature than the heat insulation compartment in the freezing temperature zone, and a damper is disposed in the return air passage of the heat insulation compartment that is at a high temperature. The refrigerator according to claim 1.   The refrigerator according to claim 1, wherein the damper is disposed in the refrigeration temperature zone heat insulation section.   The refrigerator according to any one of claims 1 to 3, wherein the damper is disposed at a position lower than that of a cool air blower fan disposed in the vicinity of the cooler.   The refrigerator according to any one of claims 1 to 4, wherein the damper is controlled to be opened and closed by a temperature sensor installed in the return air passage.   The refrigerator according to any one of claims 1 to 5, wherein a flap of the damper is closed during defrosting.

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