JP2007147112A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress increase of an invalid space in a refrigerator and increase of costs, and to individually control blowing amounts of cold air to a refrigeration chamber and a vegetable chamber. <P>SOLUTION: The refrigerator is provided with a refrigeration chamber air blowing duct 35 branched off from a refrigeration temperature zone chamber air blowing duct 34 and communicated with the refrigeration chamber 2, a vegetable chamber air blowing duct 36 branched off from the refrigeration chamber air blowing duct 34 and communicated with the vegetable chamber 6, and a tabular damper 38 opening and closing the refrigeration chamber air blowing duct 35 and the vegetable chamber air blowing duct 36. The damper 38 is provided such that it can turn around a rotary shaft positioned in an upstream side of a branch part between the refrigeration temperature zone chamber air blowing duct 34 and the vegetable chamber air blowing duct 36. It is formed such that, in response to a turning angle position of the damper, it can close both of the refrigeration chamber air blowing duct 35 and the vegetable chamber air blowing duct 36, open the refrigeration chamber air blowing duct 35 and close the vegetable chamber air blowing duct 36, and open both of the refrigeration chamber air blowing duct 35 and the vegetable chamber air blowing duct 36. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a refrigerator, and more particularly to a refrigerator that controls the amount of cool air blown to a refrigerator compartment and a vegetable compartment.

In order to keep the temperature of each room of a refrigerator composed of a refrigerator room, a vegetable room, and a freezer room at a desired value, it is generally performed to control the amount of cool air blown to each room. In particular, regarding the control of the amount of cool air blown to the refrigerator compartment and the vegetable compartment, Patent Document 1 provides a part of the cold air supplied to the vegetable compartment and the cold air circulated through the refrigerator compartment to the vegetable compartment. It is described that it is not supplied to the refrigerator compartment but supplied directly to the vegetable compartment by a bypass duct. According to this, when the load of the refrigerator compartment is large, the temperature of the return cold air from the refrigerator compartment becomes high, and the problem that the vegetable compartment is not sufficiently cooled, while suppressing the increase in the invalid space in the warehouse is reduced. It is said that the vegetable compartment can be cooled stably.

  Patent Document 2 describes that a single damper controls the amount of cool air blown to a duct communicating with a freezer compartment and a duct communicating with an air curtain device of the freezer compartment. According to this, both the duct communicating with the freezer compartment and the duct communicating with the air curtain device are “open”, the duct communicating with the freezer compartment is “open”, and the duct communicating with the air curtain device is “closed”, It is said that the air flow rate can be controlled by “closing” the duct communicating with the air curtain device and “opening” the duct communicating with the freezer compartment.

JP 2004-271178 A JP 2002-295951 A

  However, the technique described in Patent Document 1 has a problem in that it cannot variably control the ratio of the blast volume in the refrigeration room or vegetable room according to the load in the refrigeration room or vegetable room. In other words, the amount of cold air supplied to the refrigerator compartment and the vegetable compartment is between the circulation path of the cold air supplied to the refrigerator compartment and the circulation path of the cold air supplied directly to the vegetable compartment without going through the refrigerator compartment. It is determined by the balance of ventilation resistance. Therefore, for example, when only the refrigerator compartment is overloaded, if the total blast volume of the refrigerator compartment and vegetable room is increased to cool the overloaded refrigerator compartment, the blast volume to the vegetable compartment that is not overloaded is also simultaneously Since it increases, the problem that the foodstuff of a vegetable room becomes too cold arises.

  Therefore, the above problem can be solved by providing multiple dampers and variably controlling the airflow to the refrigeration room and the airflow to the vegetable room, but the ineffective space in the cabinet increases due to the multiple dampers. In addition, there is a problem that the cost increases.

  In addition, the technique described in Patent Document 2 communicates with the other duct when two ducts that blow cool air open a duct that communicates with one of them, as in the relationship between the freezer compartment and the air curtain device, for example. This is effective when the duct to be closed is in a closed relationship. However, if both the refrigeration room and the vegetable room are below the desired temperature, it is necessary not to send cold air to either, but even if the technique of Patent Document 2 is applied, refrigeration is performed with a single damper. Both the duct communicating with the room and the duct communicating with the vegetable room cannot be closed simultaneously.

  Thus, since the storage chamber on the side where the communicating duct is opened is excessively cooled, there may be a problem that the food is too cold. As a means to solve this problem without controlling the air flow rate, a heater is provided in the vegetable compartment to suppress an excessive decrease in temperature while heating, but the power consumption increases accordingly. Was invited.

  This invention is made | formed in view of these subjects, and it aims at providing the refrigerator which suppressed the increase in the invalid space in a refrigerator and the increase in cost, and was excellent in energy-saving property.

  In order to solve the above problem, the refrigerator according to the first aspect of the present invention includes a cooling chamber that includes a cooler that generates cool air that circulates and circulates in the freezer compartment, the refrigerator compartment, and the vegetable compartment, A refrigeration room fan provided in the refrigeration room, a refrigeration room air duct provided in communication with the cold air outlet of the cooling room and the freezer room, and a refrigeration room air provided in a branch from the freezer room air duct and communicated with the refrigeration room A refrigerator compartment fan duct comprising a duct, a vegetable compartment fan duct branched from the refrigerator compartment fan duct and communicating with the vegetable compartment, and a flat plate damper that opens and closes the refrigerator compartment fan duct and the vegetable compartment fan duct. Has a branch chamber formed by widening the duct wall of the part that branches the vegetable room air duct, the vegetable room air duct is provided in communication with the opening formed in the wall surface of the branch chamber, Around the rotation axis located upstream of the branch chamber Depending on the rotational angle position of the damper, both the refrigerator compartment air duct and the vegetable compartment air duct are `` closed '', the refrigerator compartment air duct is `` open '', and the vegetable compartment air duct is `` closed '', Both the refrigerator compartment air duct and the vegetable compartment air duct are formed so that they can be opened.

  That is, since the flat damper which opens and closes the refrigerator compartment air duct and the vegetable compartment air duct is provided so as to be rotatable around the rotation axis located on the upstream side of the branch chamber, the refrigerator compartment air duct and the vegetable compartment air fan are provided. Both ducts can be “closed”. In addition, by adjusting the rotation angle of the damper, the refrigerator compartment air duct is “open”, the vegetable compartment air duct is “closed”, and both the refrigerator compartment air duct and the vegetable compartment air duct are “open”. The amount of cool air blown into the room and the vegetable room can be controlled independently. Furthermore, by independently controlling the amount of cool air blown into the refrigerator compartment and vegetable compartment with a single damper, it is possible to suppress an increase in invalid space and cost in the cabinet, and a refrigerator with excellent energy savings. Can be provided.

  More specifically, a portion where the ventilation path of the refrigeration chamber air duct upstream of the branch chamber is closed by the damper and a communication port between the branch chamber and the refrigeration chamber air duct are closed by the damper in the rotation area of the damper. The opening of the wall surface of the branch room where the site | part made and the vegetable room ventilation duct connected are formed. In this case, the opening of the wall surface of the branch chamber is preferably formed on a surface substantially orthogonal to the rotation axis of the damper, and the damper is cantilevered on the rotation axis.

  Further, the damper of the refrigerator according to the second aspect of the present invention is provided to be rotatable around a rotation axis positioned downstream of the opening formed in the wall surface of the branch chamber and rotates to the side edge of the damper. A fan-shaped side plate centered on the shaft is provided, and depending on the rotational angle position of the damper, both the refrigerator compartment air duct and the vegetable compartment air duct are "closed", and the refrigerator compartment air duct is "open", the vegetable compartment air duct. Is “closed”, the refrigerator compartment air duct is “closed”, the vegetable compartment air duct is “opened”, and both the refrigerator compartment air duct and the vegetable compartment air duct are “open”.

  That is, the ventilation path of the refrigerator compartment air duct on the downstream side of the branch chamber is closed by the damper, and the opening of the wall surface of the branch chamber to which the vegetable compartment air duct is communicated is closed by the side plate of the damper chamber. Both the duct and the vegetable room air duct can be “closed”. Further, the ventilation passage of the refrigerator compartment air duct on the downstream side of the branch chamber is opened by the damper, and the opening of the wall surface of the branch chamber to which the vegetable compartment air duct is communicated is closed by the side plate of the damper chamber. It is possible to “open” the duct and “close” the vegetable room air duct. Further, the ventilation passage of the refrigerator compartment air duct on the downstream side of the branch chamber is closed by the damper, and the opening of the wall surface of the branch chamber to which the vegetable compartment air duct is communicated is opened by the side plate of the damper chamber. The duct can be “closed” and the vegetable room air duct can be “open”. Moreover, the ventilation passage of the refrigerator compartment air duct on the downstream side of the branch chamber is opened by the damper, and the opening of the wall surface of the branch chamber to which the vegetable compartment air duct is communicated is opened by the side plate of the damper chamber. Both the duct and the vegetable room air duct can be “open”. In this case, the opening of the wall surface of the branch chamber is formed in a surface substantially orthogonal to the rotation axis of the damper, and the damper extends from the wall surface on the downstream side of the branch chamber to the vicinity of the opening of the partition plate provided. It is preferable to form a cantilever on a rotating shaft fixed to the part.

  ADVANTAGE OF THE INVENTION According to this invention, the increase in the invalid space in a refrigerator and the increase in cost can be suppressed, and the refrigerator excellent in energy saving can be provided.

  Hereinafter, the Example of the refrigerator which applies this invention is described using FIGS. Specifically, it is a configuration that can control the amount of cool air blown to the refrigeration room and the vegetable room independently while suppressing an increase in invalid space and cost in the refrigerator, and communicates with the refrigeration room. Both the duct and the duct communicating with the vegetable room can be closed simultaneously. In the following description, the same functional parts are denoted by the same reference numerals, and redundant description is omitted.

  A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front view of the refrigerator of this embodiment. As shown in FIG. 1, the refrigerator 1 includes a refrigerator compartment 2, an ice making compartment 3, an upper freezer compartment 4, a lower freezer compartment 5, and a vegetable compartment 6. In the following description, the ice making chamber 3, the upper freezing chamber 4, and the lower freezing chamber 5 are collectively referred to as a freezing temperature zone chamber 7, and the refrigerating chamber 2 and the vegetable chamber 6 are collectively referred to as a refrigerating temperature zone chamber 8.

  FIG. 2 is an arrow view taken along line AA shown in FIG. As shown in FIG. 2, the outside of the refrigerator 1 and the inside of the refrigerator are separated by a heat insulating box 10. The interior of the refrigerator is partitioned into a refrigerator compartment 2, a freezing temperature zone 7, and a vegetable compartment 6 from above the interior by heat insulating partition walls 11 and 12. An ice greenhouse 13 is provided at the lowermost part of the refrigerator compartment 2. The refrigerator compartment 2 is opened and closed by a rotary door 2a, and the upper freezer compartment 4, the lower freezer compartment 5 and the vegetable compartment 6 are opened and closed by drawer type doors 4a, 5a and 6a provided in front of the respective compartments. . The drawer type doors 4a, 5a, and 6a are provided with storage containers 4b, 5b, and 6b, respectively. The storage container 4b includes, for example, frozen food, the storage container 5b includes, for example, ice cream, and the storage container 6b includes, for example, Vegetables can be stored according to each temperature range. The ice making chamber 3 shown in FIG. 1 includes a drawer-type door (not shown) and a storage container (not shown), and ice is stored in the storage container of the ice making chamber 3. The refrigerator 1 has a plurality of vacuum heat insulating materials 14 mounted thereon.

  A cooling chamber 15 is provided at the back of the freezing temperature zone chamber 7, and a cooler 16 is provided inside the cooling chamber 15. Above the cooler 16, an in-compartment blower fan 19 that sends air exchanged by the cooler 16 (hereinafter referred to as cold air or cooling air) to each room of the refrigerator 1 is provided. Below the cooling chamber 15, a defrost heater 22 that periodically defrosts the frost attached to the cooler 16 is provided, and below the defrost heater 22 defrost water generated by the defrost flows. A collar 23 is provided. The drain 23 is provided with a drain pipe 27 that allows defrost water to flow downward. An evaporating dish 28 that evaporates the defrost water is provided below the drain pipe 27. The refrigeration temperature zone chamber 7 is provided with a refrigeration temperature zone chamber return duct 29 through which the cool air after cooling the inside of the refrigeration temperature zone chamber 7 flows into the cooling chamber 15. A refrigeration room return duct (not shown) is provided therein, and a vegetable room return duct 30 is provided in the vegetable room 6.

  In addition, a machine room 31 is provided on the lower back side of the heat insulation box 10, and a compressor 32 and a radiator (not shown) are housed in the machine room 31 and are ventilated by an outside fan (not shown). . The compressor 32, a radiator (not shown), a throttle mechanism (not shown), and the cooler 16 are connected by a refrigerant pipe (not shown) to constitute a refrigeration cycle. The refrigerant is isobutane.

  Next, the outline of the structure of the duct which sends cold air to each room in the refrigerator 1 and the circulation path of the cooling air will be described with reference to FIG. The cold air discharged to the downstream side by the internal blower fan 19 provided in the cooling chamber 15 is a refrigeration temperature zone air blow duct 33 toward the freezing temperature zone chamber 7, and a refrigeration temperature zone toward the refrigerator compartment 2 and the vegetable compartment 6. Branches to the chamber air duct 34. The refrigerating temperature zone air duct 34 branches into a refrigerating room air duct 35 toward the refrigerating room 2 and a vegetable room air duct 36 toward the vegetable room 6. A damper 38 for controlling the amount of cool air blown to the duct 36 is provided. In addition, a refrigeration chamber return duct 39, a vegetable chamber return duct 30, and a refrigeration temperature zone chamber return duct 29 are provided in order to return the cold air flowing into the refrigerator compartment 2, vegetable compartment 6, and freezing temperature zone chamber 7 to the cooling chamber 15. It has been.

  Here, the structure of the damper which controls the ventilation volume of the duct which ventilates the cold air which is the characterizing part of this invention to each room of the refrigerator 1 and the cold room 2 and the vegetable compartment 6 is demonstrated. First, the structure of the damper of the refrigerator which concerns on Example 1 of this invention is demonstrated using FIG. The damper 38 includes a rotatable rotating shaft 38a and an opening / closing plate 38b fixed to the rotating shaft 38a. Here, the refrigerator compartment 2 and the vegetable compartment 6 are provided with temperature sensors (not shown), respectively, and the microcomputers (not shown) monitor the temperatures of the refrigerator compartment 2 and the vegetable compartment 6. Then, by controlling the stepping motor (not shown) by the microcomputer, the angle of the damper can be arbitrarily adjusted within the range of 0 to 180 degrees, and the temperature of each chamber can be made desired.

  Next, the configuration of the duct for blowing cool air to each room of the refrigerator 1 and the damper 38 for controlling the amount of cool air blown to the refrigerator compartment air duct 35 and the vegetable compartment air duct 36 will be described in detail with reference to FIG. FIG. 5 is a cross-sectional view showing the configuration of the damper 38 and its surrounding ducts.

  An internal blower fan 19 that circulates and blows cold air generated by a cooler (not shown) to the freezing temperature zone 7, the refrigerator compartment 2, and the vegetable compartment 6 is provided at the cold air outlet of the cooling chamber (not shown). Further, a refrigeration temperature zone chamber air duct 33 that communicates the cold air outlet of the cooling chamber and the refrigeration temperature zone chamber 7, and a refrigeration temperature zone chamber air duct 34 that communicates the cold air outlet of the cooling chamber and the refrigerator compartment 2 and the vegetable compartment 6. Is provided from the cold air outlet of the cooling chamber toward each chamber. Further, the refrigerated temperature zone chamber air duct 34 and the refrigerated chamber 2 communicate with each other, and the refrigerated temperature zone chamber air duct 34 and the vegetable compartment 6 communicate with each other. It is branched from the duct 34. Here, the refrigeration temperature zone chamber air duct 34 has a widened duct wall 40 at a site where the vegetable room air duct 36 branches. And it provided from the side surface of the duct wall 40 to the approximate center of the refrigeration temperature zone chamber air duct 34 so as to block the cool air that is directly blown from the duct wall 40 and the inside air fan 19 to the vegetable room air duct 36. A branch chamber 42 formed with the partition plate 41 is formed. Further, the opening / closing plate 38b constituting the damper 38 is cantilevered by a rotary shaft 38a provided at the tip of the partition plate 41 located on the upstream side of the branch chamber 42, and is provided so as to be rotatable around the shaft. Yes. Here, the length of the opening / closing plate 38b in the direction orthogonal to the rotation shaft 38a is substantially the same as the length of the partition plate 41 in the direction orthogonal to the rotation shaft 38a, and the length of the opening / closing plate 38b is equal to the rotation shaft 38a of the refrigeration temperature chamber air duct 34. It is approximately half the width in the orthogonal direction. And the cross section orthogonal to the cool air blowing direction of the refrigerator compartment air duct 35 is a rectangular shape substantially the same as the surface shape of the open / close plate 38b, and the refrigerator compartment air duct 35 has the end portion of the duct wall 40 on the most downstream side. The refrigeration temperature zone chamber air duct 34 including the refrigeration chamber 2 communicates with the refrigeration chamber 2. The vegetable room air duct 36 is provided in communication with an opening 36 a formed in the wall surface of the branch chamber 42 that is substantially orthogonal to the rotation shaft 38 a of the damper 38.

  That is, in the rotation region of the damper 38, a portion where the ventilation path of the refrigeration temperature zone chamber air duct 34 upstream of the branch chamber 42 is closed by the opening / closing plate 38 b, the branch chamber 42, the refrigeration temperature zone chamber air duct 34, And the opening 36a of the wall surface of the branch chamber 42 where the vegetable room air duct 36 is communicated.

  Next, operations and effects when the angle of the damper 38 is adjusted will be described with reference to FIGS. Here, FIG. 6 and FIG. 7 are all the same as FIG.

  When the damper 38 is controlled to the position as shown in FIG. 5, the cold air discharged from the internal blower fan 19 is blown only to the freezing temperature zone chamber 7. That is, both the refrigerator compartment air duct 35 and the vegetable compartment air duct 36 are “closed”. The angle range of the damper 38 in such a state is defined as an angle 1.

  When the damper 38 is controlled to the position shown in FIG. 6, the cold air discharged from the internal blower fan 19 is simultaneously blown into the freezing temperature zone 7 and the refrigerator compartment 2 but is not blown into the vegetable compartment 6. . That is, the refrigerator compartment air duct 35 is “open” and the vegetable compartment air duct 36 is “closed”. The angle range of the damper 38 in such a state is defined as an angle 2.

  When the damper 38 is controlled to the position as shown in FIG. 7, the cold air discharged from the internal blower fan 19 is simultaneously blown into the freezing temperature zone chamber 7, the refrigerator compartment 2, and the vegetable compartment 6. That is, both the refrigerator compartment air duct 35 and the vegetable compartment air duct 36 are “open”. The angle range of the damper 38 in such a state is defined as an angle 3.

  By setting the damper 38 to an angle 1, when the load of the refrigeration temperature zone chamber 7 is large, the refrigeration temperature zone chamber 7 can be intensively cooled. In addition, by setting the damper 38 at an angle 2, when the load of the refrigerator compartment 2 is large, the refrigerator compartment 2 is kept cool while the air supply to the vegetable compartment 6 is not performed while the refrigerator compartment 2 is not cooled. The cooling can be performed with emphasis. Furthermore, in the range of the angle 3, for example, when the heat load of the vegetable room 6 is not so large, the air volume is adjusted to be small by keeping the opening area of the inflow opening 36a of the vegetable room air duct small, and it is too cold. Can be prevented. Moreover, when the heat load of the vegetable compartment 6 is large, by increasing the opening area of the inflow opening 36a of the vegetable compartment air duct, the amount of blast can be increased and the vegetable compartment 6 can be maintained at a predetermined temperature. Thus, the cooling operation according to the heat load of the vegetable compartment 6 can be performed by setting the damper 38 to the angle 3.

  As described above, by appropriately setting the angle of the damper 38 to the angle 1 to the angle 3 according to the heat load of each chamber in the warehouse, both the refrigerator compartment air duct 35 and the vegetable compartment air duct 36 are “closed”. In addition, it is possible to freely control the amount of cool air blown into the refrigerator compartment 2 and the vegetable compartment 6 to provide a refrigerator that does not cause problems such as being too cold or poorly cooled. Moreover, since the control is performed by a single damper, it is possible to suppress an increase in the invalid space in the warehouse and to suppress an increase in cost.

  Furthermore, since the inflow opening 36a of the vegetable room air duct is provided on a substantially vertical surface of the damper rotation shaft, the opening area of the opening can be easily controlled by changing the angle of the damper opening / closing plate. . Therefore, the vegetable room temperature can be finely adjusted, and a more stable operation can be performed with a small change in the temperature of the vegetable room.

  A second embodiment of the present invention will be described with reference to FIGS. Here, only the characteristic part of the present embodiment will be described, and the description of the same configuration as that of the first embodiment will be omitted.

  FIG. 8 is a diagram illustrating the damper of the refrigerator according to the present embodiment. The damper 38 includes an opening / closing plate 38b fixed to a rotatable rotating shaft 38a, and a fan-shaped side plate 38c at a side edge of the opening / closing plate. The angle of the damper can be arbitrarily adjusted in the range of 0 degrees to 180 degrees as in the first embodiment.

  FIG. 9 is a cross-sectional view illustrating the configuration of the damper 38 and its peripheral ducts according to the present embodiment. The refrigeration temperature zone chamber air duct 34 has a duct wall 40 that is widened at a site where the vegetable room air duct 36 branches. A branch chamber 42 is formed by the duct wall 40 and a partition plate 41 provided extending from the most downstream end of the duct wall 40 in the vicinity of the branch portion. Further, the opening / closing plate 38b constituting the damper 38 is cantilevered by a rotating shaft 38a provided at the tip of the partition plate 41, and is provided to be rotatable around the shaft.

  Next, operations and effects when the angle of the damper 38 is adjusted will be described with reference to FIGS. Here, FIGS. 10 to 12 are all the same as FIG. 9 except for the angle of the damper 38, and therefore will not be described repeatedly.

  When the damper 38 is controlled to the position shown in FIG. 9, the opening / closing plate 38 b of the damper 38 fully closes the refrigerator compartment air duct 35, and at the same time, the side plate 38 c of the damper 38 has an inflow opening to the vegetable compartment air duct 36. 36a is fully closed. Therefore, the cool air discharged from the internal blower fan 19 is blown only to the freezing temperature zone chamber 7. That is, both the refrigerator compartment air duct 35 and the vegetable compartment air duct 36 are “closed”. An angle range of the damper 38 in such a state is set to an angle 4.

  When the damper 38 is controlled to a position as shown in FIG. 10, the side plate 38 c of the damper 38 fully closes the inflow opening 36 a to the vegetable compartment air duct 36. Therefore, the cool air discharged from the internal blower fan 19 is blown to the freezing temperature zone chamber 7 and the refrigerator compartment 2 at the same time, but is not blown to the vegetable compartment 6. That is, the refrigerator compartment air duct 35 is “open” and the vegetable compartment air duct 36 is “closed”. The angle range of the damper 38 in such a state is defined as an angle 5.

  When the damper 38 is controlled to the position as shown in FIG. 11, the cold air discharged from the internal blower fan 19 is simultaneously blown into the freezing temperature zone chamber 7, the refrigerator compartment 2, and the vegetable compartment 6. That is, both the refrigerator compartment air duct 35 and the vegetable compartment air duct 36 are “open”. The angle range of the damper 38 in such a state is defined as an angle 6.

  When the damper 38 is controlled to the position as shown in FIG. 12, the opening / closing plate 38 b of the damper 38 fully closes the refrigerator compartment air duct 35. Therefore, the cool air discharged from the internal blower fan 19 is blown to the freezing temperature zone 7 and the vegetable compartment 6 at the same time, but is not blown to the refrigerator compartment 2. That is, the refrigerator compartment air duct 35 is “closed” and the vegetable compartment air duct 36 is “open”. The angle range of the damper 38 in such a state is defined as an angle 7.

  By setting the damper 38 to an angle 4, when the load of the refrigeration temperature zone chamber 7 is large, the refrigeration temperature zone chamber 7 can be intensively cooled. Further, by setting the damper 38 at an angle of 5, when the load of the refrigerator compartment 2 is large, the refrigerator compartment 2 is maintained by cooling the freezing temperature zone 7 and not sending air to the vegetable compartment 6. The cooling can be performed with emphasis. Furthermore, by setting the damper 38 to an angle 6, for example, when the heat load of the vegetable compartment 6 is not so large, the air volume is adjusted to be small by suppressing the opening area of the inflow opening 36 a of the vegetable compartment air duct. In addition, it is possible to prevent overcooling. Moreover, when the heat load of the vegetable compartment 6 is large, by increasing the opening area of the inflow opening 36a of the vegetable compartment air duct, the amount of blast can be increased and the vegetable compartment 6 can be maintained at a predetermined temperature. Thus, the cooling operation according to the heat load of the vegetable compartment 6 can be performed by setting the damper 38 to the angle 6. Furthermore, by setting the damper 38 to an angle 7, even if the load on the vegetable compartment 6 is particularly large, by continuing to cool the freezing temperature zone 7, and not sending air to the refrigerator compartment 2, The vegetable compartment 6 can be intensively cooled.

  As described above, by appropriately setting the angle of the damper 38 to the angle 4 to the angle 7 according to the heat load of each chamber in the refrigerator, both the refrigerator compartment air duct 35 and the vegetable compartment air duct 36 are “closed”. The refrigerator which does not cause the problem of being too cold or being badly cooled can be provided by freely controlling the amount of air blown to the refrigerator compartment 2 and the vegetable compartment 6. Moreover, since the control is performed by a single damper, it is possible to suppress an increase in the invalid space in the warehouse and to suppress an increase in cost.

  Furthermore, since the inflow opening of the vegetable room air duct is provided on a substantially vertical surface of the damper rotation shaft, the opening area of the opening can be easily controlled by changing the angle of the damper opening / closing plate. Therefore, the vegetable room temperature can be finely adjusted, and a more stable operation can be performed with a small change in the temperature of the vegetable room.

  In addition, according to the first and second embodiments of the present invention, the temperature of each chamber can be made desired by adjusting the angle of the damper, so that the heater for preventing food from being too cold Heating may be performed with the minimum necessary, and thus the heater itself may be omitted. Thereby, since the increase in the power consumption by a heater is suppressed, the refrigerator excellent in energy saving property can be provided.

  Here, in the first and second embodiments of the present invention, the refrigeration temperature zone air duct 33 and the refrigeration temperature zone air duct 34 are provided at the cold air outlet of the cooling room, and further, the refrigeration temperature zone air duct. A refrigerator compartment air duct 35 and a vegetable compartment air duct 36 are branched from 34. However, the present invention is not limited to such an embodiment. For example, a refrigeration temperature zone air duct is provided at the cold air outlet of the cooling chamber, and the refrigerator compartment air duct is branched from the refrigeration temperature zone air duct. Furthermore, the same effect can be achieved even in a configuration in which the vegetable room air duct is branched from the cold room air duct.

The front view of the refrigerator which concerns on the Example of this invention. The arrow line view in the AA line of FIG. The figure showing the damper of the Example of this invention. The figure showing the cooling air circulation path | route of the Example of this invention. Sectional drawing showing the structure of the damper of the Example of this invention, and its surrounding duct. Sectional drawing showing the structure of the damper of the Example of this invention, and its surrounding duct. Sectional drawing showing the structure of the damper of the Example of this invention, and its surrounding duct. Sectional drawing showing the structure of the damper of the Example of this invention, and its surrounding duct. Sectional drawing showing the structure of the damper of the Example of this invention, and its surrounding duct. Sectional drawing showing the structure of the damper of the Example of this invention, and its surrounding duct. Sectional drawing showing the structure of the damper of the Example of this invention, and its surrounding duct. Sectional drawing showing the structure of the damper of the Example of this invention, and its surrounding duct.

Explanation of symbols

1 Refrigerator 2 Refrigerated room 4 Upper freezer room 5 Lower freezer room 6 Vegetable room 7 Freezing temperature zone 8 Refrigerated temperature zone room
15 Cooling chamber 16 Cooler 19 Blower fan 29 Refrigeration temperature zone chamber return duct 30 Vegetable room return duct 33 Refrigeration temperature zone chamber air duct 34 Refrigeration temperature zone chamber air duct 35 Refrigerating chamber air duct 36 Vegetable room air duct 38 Damper 40 Duct wall 41 Partition plate 42 Branch room

Claims (6)

A cooling chamber provided with a cooler that generates cool air that circulates and flows into the freezer compartment, the refrigerator compartment, and the vegetable compartment; A freezer compartment air duct provided in communication with the freezer compartment, a refrigerating room air duct provided by branching from the freezer compartment air duct and communicating with the refrigerator compartment, and a branching from the refrigerator compartment air duct. A vegetable room air duct provided in communication with the room, a refrigeration room air duct, and a flat plate damper that opens and closes the vegetable room air duct,
The refrigerating room air duct has a branch chamber formed by widening a duct wall of a portion that branches the vegetable room air duct, and the vegetable room air duct communicates with an opening formed in the wall surface of the branch chamber. Provided,
The damper is provided so as to be rotatable around a rotation shaft positioned on the upstream side of the branch chamber, and both the refrigerator compartment air duct and the vegetable compartment air duct are closed according to the rotational angle position of the damper. ”, A refrigerator formed so that the refrigerator compartment air duct is“ open ”, the vegetable compartment air duct is“ closed ”, and both the refrigerator compartment air duct and the vegetable compartment air duct are“ open ”. In the refrigerator according to claim 1,
In the rotating region of the damper, a portion where the ventilation path of the refrigeration chamber air duct on the upstream side of the branch chamber is closed by the damper and a communication port between the branch chamber and the refrigeration chamber air duct are formed by the damper. The refrigerator characterized by forming the site | part to be closed and the opening of the wall surface of the said branch chamber to which the said vegetable compartment ventilation duct was connected. The refrigerator according to claim 2,
The opening of the wall surface of the branch chamber is formed in a surface substantially orthogonal to the rotation axis of the damper,
The refrigerator, wherein the damper is cantilevered on the rotating shaft. A cooling chamber provided with a cooler that generates cool air that circulates and flows into the freezer compartment, the refrigerator compartment, and the vegetable compartment; A freezer compartment air duct provided in communication with the freezer compartment, a refrigerating room air duct provided by branching from the freezer compartment air duct and communicating with the refrigerator compartment, and a branching from the refrigerator compartment air duct. A vegetable room air duct provided in communication with the room, a refrigeration room air duct, and a flat plate damper that opens and closes the vegetable room air duct,
A branch chamber is formed by expanding a duct wall at a branch portion of the refrigerator compartment air duct and the vegetable compartment air duct, and the vegetable compartment air duct is provided in communication with an opening formed on the wall surface of the branch chamber. ,
The damper is provided so as to be rotatable around a rotation shaft positioned downstream of an opening formed in the wall surface of the branch chamber, and a fan-shaped side plate centering on the rotation shaft at a side edge of the damper. Depending on the rotational angle position of the damper, both the refrigerator compartment air duct and the vegetable compartment air duct are “closed”, the refrigerator compartment air duct is “open”, and the vegetable compartment air duct is “closed”. The refrigerator is formed so that the refrigerator compartment air duct is "closed", the vegetable compartment air duct is "opened", and both the refrigerator compartment air duct and the vegetable compartment air duct are "open". The refrigerator according to claim 4,
In the rotation area of the damper,
The ventilation passage of the refrigerator compartment air duct on the downstream side of the branch chamber is closed by the damper, and the opening of the wall surface of the branch chamber connected to the vegetable compartment air duct is closed by the side plate of the damper ,
A portion where the ventilation passage of the refrigerator compartment air duct on the downstream side of the branch chamber is opened by the damper, and the opening of the wall surface of the branch chamber connected to the vegetable compartment air duct is closed by the side plate of the damper ,
The ventilation passage of the refrigerator compartment air duct on the downstream side of the branch chamber is closed by the damper, and the opening of the wall surface of the branch chamber connected to the vegetable compartment air duct is opened by the side plate of the damper ,
A portion where the ventilation passage of the refrigerator compartment air duct on the downstream side of the branch chamber is opened by the damper, and the opening of the wall surface of the branch chamber where the vegetable compartment air duct is communicated is opened by the side plate of the damper. A refrigerator characterized by being formed. The refrigerator according to claim 5,
The opening of the wall surface of the branch chamber is formed in a surface substantially orthogonal to the rotation axis of the damper,
The refrigerator, wherein the damper is cantilevered by the rotating shaft fixed to a front end portion of a partition plate provided to extend in the vicinity of the opening from a wall surface on the downstream side of the branch chamber.

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