JP2016038100A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator capable of eliminating dew condensation in a vegetable chamber and capable of cooling and storing vegetables and the like favorably.SOLUTION: A refrigerator includes: a cooling fan for supplying and circulating cool air to a vegetable chamber and the like; a vegetable chamber fan provided in the vegetable chamber separately from the cooling fan; and a control unit for controlling the vegetable chamber fan. The control unit is configured so as to perform a timer control operation (X) for driving the vegetable chamber fan for predetermined time, when the vegetable chamber is within a predetermined temperature range, and so as to perform a temperature control operation (Y) for driving the vegetable chamber fan on the basis of the vegetable chamber temperature, when the vegetable chamber temperature is the temperature higher than the predetermined temperature range. Thereby, temperature difference occurring inside the vegetable chamber is eliminated, occurrence of dew condensation due to the temperature difference can be prevented, and at the same time, the inside of the vegetable chamber can be cooled efficiently and the vegetables and the like in the vegetable chamber can be cooled and stored favorably.SELECTED DRAWING: Figure 26

Description

  The present invention relates to a refrigerator, and more particularly to a vegetable room cooling configuration of the refrigerator.

  Generally, a household refrigerator is configured by providing a plurality of storage rooms having different temperature bands, for example, a refrigerator room, a vegetable room, and a freezer room, in the refrigerator body. The layout of the refrigerator compartment, vegetable compartment, and freezer compartment is largely divided into two according to the actual usage of the user, one of which is the type in which the freezer compartment is arranged at the upper and lower center portions of the refrigerator main body that is most easily used by the user. The other is a type where a vegetable room is arranged in the same part.

  Refrigerators of a type in which a freezing room is arranged at a substantially central portion in the upper and lower sides of the refrigerator body have become the mainstream of today's refrigerators, and are easy to use for users who frequently use frozen foods as lifestyle changes. Many have been proposed (see, for example, Patent Document 1).

  FIG. 29 shows a refrigerator described in Patent Document 1. This refrigerator has a refrigerator room 101 in the upper part of the refrigerator body 100 and a vegetable room 102 in the lower part. A freezer compartment 103 is arranged. This refrigerator is provided with a cooling chamber 104 on the back side across the vegetable compartment 102 and the freezing chamber 103 of the refrigerator main body 100, and a cooler 105 and a cooling fan 106 are arranged in the cooling chamber 104. The generated cold air is supplied to the refrigerating room 101, the vegetable room 103, and the freezing room 102 by the cooling fan 106 and circulated, and the food stored in these rooms is cooled and stored.

  In addition, a refrigerator of a type in which a vegetable room is arranged at a substantially central portion of the top and bottom of the refrigerator body is abbreviated as a middle vegetable refrigerator, and has been proposed as being easy to use for users who mainly use vegetables in and out (for example, patents) Reference 2).

  FIG. 30 shows a refrigerator described in Patent Document 2. This refrigerator has a refrigerator room 201 in the upper part of the refrigerator body 200 and a freezer room 202 in the lower part. A vegetable compartment 203 is arranged in the central part. In the same manner as described above, this refrigerator is also provided with a cooling chamber 204 across the freezer compartment 202 and the vegetable compartment 203 of the refrigerator main body 200, and a cooler 205 and a cooling fan 206 are disposed in the cooling chamber 204. The cold air generated by the cooler 205 is supplied to the refrigeration room 201, the vegetable room 203, and the freezing room 202 by the cooling fan 206 and circulated, and the food stored in these rooms is cooled and stored.

  In any of the above types of refrigerators, the cold air generated in the cooling room is circulated to the vegetable room via the refrigerating room, and the vegetables stored in the vegetable room are cooled and stored by the circulating cold air.

JP 2010-60258 A JP-A-9-113109

However, the conventional vegetable room cooling configuration of the refrigerator described in Patent Document 1 and Patent Document 2 is as follows.
In either case, dew condensation may occur in the vegetable compartments 103 and 203 during the cold storage of the vegetables. In such a case, there is a problem that the vegetables stored therein are deteriorated.

  That is, the vegetable compartments 103 and 203 receive the cold radiation from the cooling chambers 104 and 204 located on the back side thereof, and the cold radiation from the cooling chambers 104 and 204 is stopped in the state where the cold air circulation by the cooling fans 106 and 206 is stopped. Therefore, the temperature in the vicinity of the back of the vegetable compartments 103 and 203 tends to be lowered, and on the other hand, the temperature on the door side of the vegetable compartments 103 and 203 tends to rise due to the influence of the outside air temperature. As a result, condensation occurred.

  In addition, even during cooling when cooling air is being circulated by a cooling fan, the cooling air supplied to the vegetable compartments 103 and 203 is supplied by splitting the return cold air from the refrigerator compartment. In addition to the small amount supplied, the flow in the vegetable compartment is weak. Therefore, in the summer when the outside air temperature becomes high, or when a lot of vegetables or large vegetables such as cabbage are temporarily stored in the vegetable rooms 103 and 203, the outside air temperature or the heat of the vegetables The temperature in the vicinity of the door and the vegetables rises due to the influence, and a temperature difference is inevitably generated between the vicinity of the back of the vegetable room and the temperature of the vegetable room is lowered by the cold radiation from the cooling chambers 104 and 204. Condensation began to occur.

  In addition, in the summer, when the temperature of the outside temperature and the purchased vegetables etc. tend to be relatively high, the temperature of the whole vegetable room tends to be high, and as a result, the vegetables etc. can be sufficiently cooled and stored. There is also a risk that the deterioration of the vegetables is accelerated, and at the same time, the user is given the impression that the refrigerator does not cool, and the reliability of the refrigerator is lowered.

  Especially in recent refrigerators, large vegetable bottles and packs of drinking water, tea, and juice have been stored in the vegetable compartments 103 and 203, and the plastic bottles are at a room temperature compared to vegetables. In addition, since it has a large heat capacity, when it is stored in the vegetable compartment 103, 203, it is affected by the heat of vegetables, plastic bottles, etc. immediately after the storage, so that the temperature is reduced by the cold radiation from the cooling chamber 104, 204. The temperature difference between this and the temperature tends to be large, and the problem of vegetable deterioration due to condensation of the cold air in the vegetable room and the problem of insufficient cooling in the summer tend to become apparent.

  Further, in the refrigerator abbreviated as the middle vegetable, the bottom of the vegetable compartment 203 receives cold radiation from the freezer compartment 202 located below the vegetable compartment 203, so that the vegetable compartment is combined with the cold radiation from the freezer compartment 202. In the vicinity of the lower back of 203, the temperature tends to be lower, and the problem of vegetable deterioration due to condensation of the cold air in the vegetable room and the problem of insufficient cooling in the summer are likely to become obvious.

  This invention is made | formed in view of such a point, and it aims at providing the refrigerator which eliminates the dew condensation in a vegetable room and can preserve | save vegetables etc. favorably.

  In order to achieve the above object, the present invention provides a cooling fan that circulates cold air in a refrigerator compartment, a vegetable compartment, and a freezer compartment, and a vegetable that takes cold air into the vegetable compartment separately from the cooling fan and circulates cold air in the vegetable compartment. A room fan and a control unit for controlling the vegetable room fan, the control unit performs a timer control operation for driving the vegetable room fan at a predetermined time when the vegetable room is within a predetermined temperature range, When the temperature of the vegetable room is higher than a predetermined temperature range, a temperature control operation for driving the vegetable room fan is performed for a time set based on the temperature of the vegetable room.

As a result, in this refrigerator, when the vegetable compartment is stable within the predetermined temperature range, the vegetable compartment fan is rotated for a predetermined period of time to forcibly circulate the cold air in the vegetable compartment and thereby reduce the temperature difference in the vegetable compartment caused by the cold radiation from the cooling compartment. This eliminates the occurrence of dew condensation and increases the amount of cold air taken into the vegetable room by rotating the vegetable room fan for a long time set according to the temperature of the vegetable room when the temperature is higher than the predetermined temperature range. The vegetable room can be efficiently cooled and held at a low temperature by using the increased cold air and the low-temperature cold air near the lower portion of the back surface that has been lowered by the cold radiation from the cooling chamber as a cooling source. In addition, when the temperature in the vegetable room is stable within a predetermined temperature range, the rotation of the vegetable room fan is controlled at a predetermined time. The variation in temperature control due to the delay in temperature detection can be reduced, and the temperature in the vegetable room can be stabilized and the vegetable can be stored in a cooled state in a good state.

  The refrigerator of the present invention can suppress the occurrence of dew condensation in the vegetable room, and can cool and hold the vegetable room at a low temperature, and can be a highly reliable refrigerator that cools and preserves vegetables in a good state.

Front view of the refrigerator in Embodiment 1 of the present invention Front view when opening the refrigerator door in the first embodiment 2 is a cross-sectional view taken along line AA in FIG. 2 showing the refrigerator according to the first embodiment. BB sectional drawing of FIG. 2 which shows the refrigerator in Embodiment 1 Half-cut perspective view of the refrigerator in the first embodiment Schematic cross-sectional view for explaining the cold air flow of the refrigerator in the first embodiment Schematic front view for explaining the cold air flow of the refrigerator in the first embodiment The perspective view explaining the cool air flow of the cooling chamber back surface part of the refrigerator in Embodiment 1 The principal part expanded sectional view of FIG. 3 which shows the refrigerator in Embodiment 1 Schematic cross-sectional view for explaining the cold air flow in FIG. The principal part expanded sectional view of FIG. 4 which shows the refrigerator in Embodiment 1 Schematic sectional view for explaining the cold air flow in FIG. The enlarged front view which shows the vegetable compartment and freezer compartment of the refrigerator in Embodiment 1 The enlarged front view which shows the cooling fan and cooler which were installed in the back of the vegetable compartment and freezer compartment of the refrigerator shown in FIG. The expanded perspective view which shows the back wall part of the vegetable compartment and freezer compartment of the refrigerator in Embodiment 1 The perspective view of the back surface partition wall block which comprises the back wall part of the vegetable compartment of the refrigerator shown in FIG. 16 is an exploded perspective view of a rear partition wall block that constitutes the rear wall portion of the vegetable compartment shown in FIG. The disassembled perspective view of the block which comprises the back wall part of the freezer compartment shown in FIG. The perspective view of the partition plate and cooling fan which partition the storage room and vegetable room of the refrigerator in Embodiment 1 The perspective view which shows the vegetable storage case of the refrigerator in Embodiment 1 Control block diagram of the refrigerator in the first embodiment Flowchart explaining the vegetable room cooling operation of the refrigerator in the first embodiment The timing chart figure which shows the operation | movement when the vegetable compartment of the refrigerator in the same Embodiment 1 is temperature-equalizing by cold air circulation The timing chart figure which shows the cooling operation when cooling the vegetable compartment of the refrigerator in the same Embodiment 1 by equalizing by cold air circulation The timing chart figure which shows temperature equalization by cold air circulation and cooling operation | movement when the temperature of the vegetable compartment of the refrigerator in Embodiment 1 is higher than predetermined temperature The timing chart figure which shows the cooling condition of the vegetable compartment controlled by control of the refrigerator in Embodiment 1 The perspective view explaining the cool air flow of the cooling chamber back surface part of the refrigerator in Embodiment 2 Schematic sectional view for explaining the cold air flow in the vegetable compartment of the refrigerator in the second embodiment Schematic sectional view of a conventional refrigerator Schematic sectional view of another conventional refrigerator

  The first invention includes a cooling fan that circulates cold air to a refrigerator compartment, a vegetable compartment, a freezer compartment, a vegetable compartment fan that takes cold air into the vegetable compartment separately from the cooling fan, and circulates cold air in the vegetable compartment, A controller for controlling the vegetable room fan, and the controller performs a timer control operation for driving the vegetable room fan for a predetermined time when the vegetable room is within a predetermined temperature range, and the temperature of the vegetable room When the temperature is higher than the predetermined temperature range, the temperature control operation for driving the vegetable compartment fan is performed for a time set based on the vegetable compartment temperature.

  As a result, in this refrigerator, when the vegetable compartment is stable within the predetermined temperature range, the vegetable compartment fan is rotated for a predetermined period of time to forcibly circulate the cold air in the vegetable compartment and thereby reduce the temperature difference in the vegetable compartment caused by the cold radiation from the cooling compartment. This eliminates the occurrence of dew condensation and increases the amount of cold air taken into the vegetable room by rotating the vegetable room fan for a long time set according to the temperature of the vegetable room when the temperature is higher than the predetermined temperature range. The vegetable room can be efficiently cooled and held at a low temperature by using the increased cold air and the low-temperature cold air near the lower portion of the back surface that has been lowered by the cold radiation from the cooling chamber as a cooling source. In addition, when the temperature in the vegetable room is stable within a predetermined temperature range, the rotation of the vegetable room fan is controlled at a predetermined time. The variation in temperature control due to the delay in temperature detection can be reduced, and the temperature in the vegetable room can be stabilized and the vegetable can be stored in a cooled state in a good state.

  In a second aspect based on the first aspect, the controller sets the vegetable compartment fan driving time during timer control operation based on the outside air temperature.

  This makes it possible to optimize the drive time of the vegetable compartment fan according to the outside air temperature, so that the vegetable compartment fan can rotate without excess or shortage even if the outside air temperature fluctuates. Even so, reliable and efficient cooling and prevention of condensation can be achieved according to the outside air temperature.

  According to a third invention, in the first or second invention, the control unit corrects the vegetable room fan drive time during the temperature control operation based on the vegetable room temperature, and is longer than the time set in the timer control operation. The vegetable room fan is driven.

  As a result, the vegetable room fan rotates for a long time according to the temperature of the vegetable room at the time of transition in which the temperature in the vegetable room becomes higher than the predetermined temperature range due to the removal of vegetables, etc. The amount of cold air taken in can be increased, and the vegetable compartment can be reliably and quickly cooled to a predetermined temperature range.

  According to a fourth aspect of the present invention, in the first to third aspects, the controller is configured to forcibly stop the vegetable compartment fan when the temperature of the vegetable compartment is lower than a predetermined temperature range.

As a result, when the vegetable room is lower than the predetermined temperature range and the temperature difference is small and there is little risk of dew condensation, the vegetable room fan is stopped, and wasteful power consumption due to rotation of the vegetable room fan is suppressed. Good cold storage can be realized.

  According to a fifth invention, in the first to fourth inventions, the control unit is configured to forcibly stop the vegetable compartment fan while the compressor for generating cold air is stopped.

  As a result, it is possible to eliminate the suspicious user's suspicious operation sound caused by the vegetable room fan rotating during the cooling operation stop when the compressor is stopped, and to prevent the reliability of the refrigerator from being impaired. it can.

  In a sixth aspect based on the first to fourth aspects, the controller forcibly stops the vegetable compartment fan when the operation stop of the compressor for generating cold air is within a predetermined time, and the stop state is When it becomes more than fixed time, it is set as the structure which drives a vegetable compartment fan based on a timer control driving | operation.

  As a result, when the compressor is stopped, that is, the cooling operation is stopped, the vegetable compartment is lower than the predetermined temperature range, and the temperature difference is small, the vegetable compartment fan is stopped and wasteful power consumption is caused by the rotation of the vegetable compartment fan. At the same time, when the vegetable room fan stop time is prolonged and a temperature difference occurs in the vegetable room due to the cold radiation from the cooling room, the vegetable room fan is rotated to eliminate the temperature difference and suppress the occurrence of condensation. It is possible to keep the vegetables well cooled while always preventing condensation at any time.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, although this embodiment demonstrates and demonstrates the refrigerator of the type abbreviated as what is called a middle vegetable, this invention is not limited by this.

(Embodiment 1)
1 is a front view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a front view when the door of the refrigerator according to Embodiment 1 is opened, and FIG. 3 is a diagram illustrating the refrigerator according to Embodiment 1. FIG. 4 is a sectional view taken along the line BB in FIG. 2 showing the refrigerator in the first embodiment, FIG. 5 is a half perspective view of the refrigerator in the first embodiment, and FIG. 6 is the first embodiment. 7 is a schematic cross-sectional view for explaining the cold air flow of the refrigerator in FIG. 1, FIG. 7 is a schematic front view for explaining the cold air flow of the refrigerator in the first embodiment, and FIG. FIG. 9 is an enlarged cross-sectional view of the main part of FIG. 3 showing the refrigerator in the first embodiment, and FIG. 10 is a schematic cross-sectional view for explaining the cold air flow in FIG. FIG. 4 shows the main part of FIG. 4 showing the refrigerator in the first embodiment. FIG. 12 is a schematic sectional view for explaining the cold air flow in FIG. 11, FIG. 13 is an enlarged front view showing the vegetable compartment and the freezer compartment of the refrigerator in the first embodiment, and FIG. The enlarged front view which shows the cooling fan and cooler which were installed in the back of the vegetable compartment and freezer compartment of the refrigerator to show, FIG. 15 is an enlarged perspective view which shows the vegetable compartment of the refrigerator in Embodiment 1, and the back wall part of a freezer compartment 16 is a perspective view of a rear partition wall block constituting the rear wall portion of the vegetable compartment of the refrigerator shown in FIG. 15, and FIG. 17 is a rear partition wall constituting the rear wall portion of the vegetable compartment shown in FIG. FIG. 18 is an exploded perspective view of the block constituting the back wall portion of the freezer compartment shown in FIG. 16, and FIG. 19 is a partition plate for partitioning the storage compartment of the refrigerator and the vegetable compartment in the first embodiment. FIG. 20 is a perspective view of the cooling fan, and FIG. 21 is a perspective view showing a vegetable storage case of the refrigerator in FIG. 1, FIG. 21 is a control block diagram of the refrigerator in the first embodiment, FIG. 22 is a flowchart for explaining the vegetable room cooling operation of the refrigerator in the first embodiment, and FIG. FIG. 24 is a timing chart showing an operation when the vegetable compartment of the refrigerator in the first embodiment is temperature-equalized by cold air circulation, and FIG. 24 cools the temperature of the vegetable room of the refrigerator in the first embodiment while being equalized by cold air circulation. FIG. 25 is a timing chart showing the temperature equalization and cooling operation by the cold air circulation when the temperature of the vegetable room of the refrigerator in the first embodiment is higher than a predetermined temperature. FIG. 26 is a timing chart showing the cooling state of the vegetable room controlled by the refrigerator control in the first embodiment.

  First, the whole structure of a refrigerator is demonstrated.

<Fridge body configuration>
1-6, the refrigerator which concerns on this Embodiment is equipped with the refrigerator main body 1 which opened the front, This refrigerator main body 1 has the outer case 2 mainly using the steel plate as shown in FIG. The inner box 3 is made of a hard resin such as ABS, and the foam heat insulating material 4 such as hard foam urethane filled between the outer box 2 and the inner box 3 is formed. The refrigerator main body 1 is divided into a plurality of storage rooms by a partition plate 5.6. The refrigerator main body 1 has a refrigerator compartment 7 at the top, a vegetable compartment 8 at the bottom of the refrigerator compartment 7, and a freezer compartment at the bottom. 9 is arranged, and it is a middle vegetable room type refrigerator. The front opening of each storage chamber is closed by a door 10, a door 11, and a door 12 so as to be opened and closed.

  A machine room 14 is provided in the upper rear region of the refrigerator body 1. The machine room 14 accommodates high-pressure components of the refrigeration cycle such as the compressor 15 and a dryer (not shown) for removing moisture.

  In addition, a cooling chamber 16 that generates cool air is provided on the back surface of the refrigerator body 1. The cooling chamber 16 is formed from the back surface of the freezing chamber 9 to the lower back surface of the vegetable chamber 8, and a back partition wall body 17 is provided between the vegetable chamber 8 and a heat insulating material such as polystyrene foam. Insulated partitions.

  A cooler 18 is disposed in the cooling chamber 16, and a cooling fan 19 is disposed above the cooler 18. The cooling fan 19 forcibly circulates the cold air cooled by the cooler 18 to the refrigerating room 7, the vegetable room 8, and the freezing room 9 to cool each room. For example, the refrigerator compartment 7 is cooled to a temperature of 1 ° C. to 5 ° C. at which food is not frozen, and the vegetable compartment 8 is cooled to a temperature 2 ° C. to 7 ° C. that is equal to or slightly higher than the refrigerator compartment 7. Further, the freezer compartment 9 is usually cooled to a freezing temperature range of −22 ° C. to −15 ° C. for frozen storage, and in some cases, for example, a low temperature of −30 ° C. or −25 ° C. to improve the frozen storage state. Sometimes it cools down.

  As shown in FIG. 19, the cooling fan 19 is attached to a partition plate 6 that partitions the vegetable compartment 8 and the cooling chamber 16, and the partition plate 6 is attached to the inner box 3 of the refrigerator body 1. In this state, as shown in FIGS. 9 and 10, the cooling fan 19 is located at a portion facing the back of the vegetable compartment 8 and blows cool air toward the rear partition wall body 17 that partitions the vegetable compartment 8. And it brings strong cold radiation to the lower back of the vegetable room.

  In the lower space of the cooler 18, a defrost heater 28 for defrosting frost and ice adhering to or around the cooler 18 is disposed as shown in FIG. A drain pan 29 for receiving defrost water generated at the time of defrosting is disposed below the defrost heater 28, and the defrost water is discharged from the deepest part of the drain pan 29 to an evaporation tray outside the chamber through a drain tube (not shown). It is like that.

  Next, the cold air circulation configuration will be described.

<Cooling air circulation path configuration>
As shown in FIGS. 9 and 10, the cooling chamber 16 that generates cool air is connected to the cooling chamber cool air conveyance path 30 formed between the rear partition wall body 17 and the refrigerator main body 1. The downstream opens, and cool air is blown into each chamber through the cooling chamber cool air conveyance path 30.

The upper part of the cooling chamber cool air conveyance path 30 is a refrigerated cold air passage 32 formed at a substantially central portion of the back surface of the refrigeration chamber 7 through a refrigeration chamber damper 31 as shown in FIGS. Communicated with. As shown in FIGS. 7 and 8, a refrigerated cold air return passage 33 from the refrigeration chamber 7 is installed adjacent to the side of the refrigerated cold air passage 32, and the lower part thereof communicates with the vegetable compartment 8 and the cooling compartment 16. Yes.

  As shown in FIG. 7, the refrigerating chamber 7 is provided with a refrigerating / cooling air inlet 35 of a refrigerating / refrigerating air passage 32 at an appropriate position above the rear wall, and the refrigerating / refrigerating air that opens to the refrigerating / refrigerating air return passage 33 is provided at a lower position on the inner wall. A return port 36 is provided, and the cold air from the cooling chamber 16 is supplied to the refrigerating / refrigerating air passage 32 via the refrigerating chamber damper 31, and is supplied from the refrigerating / refrigerating air inlet 35 to the refrigerating chamber 7. On the other hand, the cold air after cooling in the refrigerating room is supplied from the refrigerating cold air return port 36 to the vegetable room 8 through the refrigerating cold air return passage 33 and circulates to the cooling room 16. As will be described later, the refrigerating chamber 7 is provided with a partial chamber at the lower portion thereof. As shown in FIG. 8, the partial chamber has a partial chamber damper 31a, a partial chamber cold air passage 32a, and a partial chamber cold air inlet. Cold air is supplied through 35a.

  In this embodiment, as is clear from FIG. 8, the cooling chamber cold air conveyance path 30, the refrigerated cold air passage 32, and the partial chamber cold air passage 32 a are provided on the back surface of the rear partition wall body 17 and the partition plate 6. And a return passage 38 for connecting the refrigerated cold air return passage 33 to the vegetable compartment 8 and the cooling chamber 16. The refrigeration chamber damper 31 and the like are provided in the forward passage 37. Yes.

  A communication passage 39 is formed between the refrigerated cold air return passage 32 and the refrigerated cold air return passage 33 so that a part of the low temperature cold air flowing through the refrigerated cold air return passage 32 is directly mixed into the refrigerated cold air return passage 33. It is configured.

  Further, as shown in FIG. 8, a cold air return duct 40 is provided on the rear surface of the freezer compartment 9 so as to extend downward on the side of the cooler 18 of the cooling chamber 16. It communicates with the vegetable compartment 8 via the passage 38 and its lower portion opens near the lower portion of the cooling chamber 16, and the cold air after cooling the vegetable compartment 8 returns to the lower portion via the return passage 38 and the cold air return duct 40. To the cooling chamber 16.

  On the other hand, as shown in FIG. 10, the freezer compartment 9 has a freezer cold air inlet 42 communicating with the lower part of the cooling room cold air conveying path 30 on the back of the rear partition wall 17 at the upper part of the rear wall 41 and the cooling room at the lower part. A freezing cold air return port 43 is formed in the lower portion of the cooling chamber 16, and the cold air from the cooling chamber 16 is supplied from the lower portion of the cooling chamber cold air conveyance path 30 through the freezing cold air inlet 42. It circulates to the cooling chamber 16 through the cold air return port 43.

<Vegetable room configuration>
As shown in FIGS. 7, 8, and 12, the vegetable room 8 is located on either the left or right side of the back wall, in this embodiment, on the lower part of the right side when viewed from the front and from the refrigerated cold air return passage 33. Only one vegetable cold air inlet / outlet 44 is provided in the return passage 38. As shown in FIG. 8, the vegetable cold air inlet / outlet port 44 is provided so as to be positioned above the lower end of the bell mouth opening of the cooling fan 19, and when the cooling fan 19 is stopped, the low temperature cold air in the cooling chamber 16 is returned to the cold air return duct. 40 and the return passage 38 are prevented from flowing into the vegetable compartment 8 from the vegetable cold air inlet / outlet 44.

Furthermore, in this vegetable compartment 8, as shown in FIG. 12, a vegetable compartment passage section 50 is provided in the vertical direction at the front position of the cold air return passage 38 using the rear partition wall 17 on the back of the vegetable compartment 8. It is formed vertically. The upper part of the vegetable compartment passage 50 communicates with the first vegetable cold air inlet 47 of the first passage 47a in the front-rear direction provided in the upper part of the vegetable compartment 8, and the lower part communicates with the vegetable cold air inlet / outlet 44.

  In addition, a vegetable room fan 53 made of a propeller fan or the like is disposed in the vegetable room 8 at a portion facing the vegetable cold air inlet / outlet 44. The vegetable compartment fan 53 is arranged in an offset state so that its central axis is located below the central axis of the vegetable cold air inlet / outlet 44. The vegetable room fan 53 is positioned in front of the vegetable cold air inlet / outlet 44, and is installed so that the vegetable room fan 53 and the vegetable cold air inlet / outlet 44 overlap each other when viewed from the front. In addition, when the amount of cooling of the vegetable room 8 is required to be large, it is effective to increase the opening area of the vegetable cold air inlet / outlet 44, and when the amount of cooling may be small, it is effective to reduce the opening area of the vegetable cold air inlet / outlet 44. Also in this case, the lower end of the vegetable cold air inlet / outlet 44 is provided at a position lower than the upper end of the vegetable compartment fan 53, and is installed so as to overlap the front and rear.

  Moreover, in the vegetable compartment 8 of this embodiment, as shown in FIG. 13, FIG. 16, etc., it is the upper part of the back surface partition wall body 17 used as the back surface, and the diagonal position of the said vegetable cold air entrance / exit 44 In this embodiment, in this embodiment, a second vegetable cold air suction port 51 is provided in the upper left side upper part, and a second passage 51a provided with the second vegetable cold air suction port 51 is also shown in FIG. In this way, it communicates with the upper part of the vegetable compartment passage 50.

  FIG. 17 is an exploded perspective view of the vegetable compartment passage section 50, the second vegetable cold air inlet 51, and the rear partition wall body 17 forming the second vegetable cold air inlet 51. 50 is formed between a front partition plate 17a and a rear partition plate 17b which are polymerized via a polystyrene foam (not shown), and an upper end portion 50a thereof is connected to the first passage 47a and the second passage 51a. It is open. Further, as described above, the vegetable room fan 53 is incorporated in the lower part of the vegetable room passage section 50, and its outlet 54 opens into the vegetable room 8, and the cold air from the vegetable cold air inlet / outlet 44 and the The vegetable compartment cold air from the first vegetable cold air inlet 47 and the second vegetable cold air inlet 51 is blown into the vegetable compartment 8.

  The vegetable compartment 8 is provided with a vegetable storage case 48 as shown in FIG. 11 and the like. The vegetable storage case 48 includes a lower vegetable storage case 49a placed on the frame of the door 11 and a lower vegetable. The upper vegetable storage case 49b is placed on the storage case 49a. The vegetable compartment 8 is provided with a space between the vegetable storage case 48, the partition plate 6 below and the inner peripheral wall surface of the vegetable compartment 8, and the space is an air passage through which the cold air from the vegetable cold air inlet / outlet 44 flows. Is configured.

  Further, the upper opening edge of the upper vegetable storage case 49b of the vegetable storage case 48 is located in a portion close to the partition plate 5 in the upper portion of the vegetable compartment 8 and is located in an upper portion from the vegetable cold air inlet / outlet 44. The cool air from the doorway 44 is configured not to enter directly into the upper vegetable storage case 49b and the lower vegetable storage case 49a of the vegetable storage case 48. A lid that closes the upper vegetable storage case 49b may be provided at the upper opening of the upper vegetable storage case 49b to prevent cold air from entering the vegetable storage case 48 more reliably.

  Further, as shown in FIG. 21, the lower vegetable storage case 49a is divided into left and right by a case partition plate 58, and the side opposite to the vegetable cold air inlet / outlet 44, in this embodiment, the right side portion is deepened by one step to make a plastic bottle. And a non-vegetable storage section 59 (hereinafter referred to as a storage section such as a plastic bottle). In addition, this container part 59 for PET bottles etc. is good also as dividing the inside of the vegetable compartment 8 back and forth, and making the front side part a container part etc. for PET bottles.

<Refrigerator configuration>
As shown in FIG. 4 and the like, the refrigerator compartment 7 includes a plurality of storage shelves 60 and a partial chamber 61 that can be cooled to a semi-refrigeration temperature zone.
And the refrigeration cold air return port 36 (all refer FIG. 7) is provided. An operation unit 62 for setting the internal temperature of each room, ice making, rapid cooling, and the like is disposed at an appropriate side wall of the refrigerator compartment 7.

<Freezer configuration>
Further, as already described with reference to FIG. 10, the freezer compartment 9 is formed with a freezer cold air inlet 42 communicating with the lower portion of the cooler air passage 30 on the back of the rear partition wall body 17 at the upper rear wall. A refrigerated cold air return port 43 communicating with the cooling chamber 16 is formed in the lower part of the wall. Although not shown in the structural diagram, the freezer damper 34 may be incorporated at an appropriate position in the passage from the cooling chamber 16 to the freezer compartment 9. The freezer compartment 9 is also provided with a freezer compartment 63 placed on the frame of the door 12 as shown in FIG. 4 and the like, and an ice making device 64 is provided above the freezer compartment 63. It has been incorporated.

  Next, the control configuration of the refrigerator will be described.

<Control configuration>
FIG. 21 shows a control block diagram in the refrigerator of the present embodiment, in which 65 is a refrigerator temperature detecting means, 66 is a vegetable room temperature detecting means, 67 is a freezer temperature detecting means, and 68 is an outside air temperature detecting means. The thermistors are formed by thermistors, and are installed at appropriate places in the refrigerator compartment 7, the vegetable compartment 8, the freezer compartment 9, and the refrigerator main body 1, respectively. Reference numeral 69 denotes a control unit that performs overall control of the entire refrigerator. The control unit 69 includes a microcomputer or the like, and the refrigerator compartment according to control software built in advance based on outputs from the refrigerator compartment temperature detecting means 65 and the freezer compartment temperature detecting means 67. The damper 31 and freezer compartment damper 34 are controlled to open and close, and the compressor 15 and the cooling fan 19 are driven to control each chamber to a set temperature. Further, the control unit 69 controls the operation of the vegetable compartment fan 53 incorporated in the vegetable compartment passage portion 50 of the vegetable compartment 8 based on outputs from the refrigerator compartment temperature detection means 65, the vegetable compartment temperature detection means 66, and the outside air temperature detection means 68. It is supposed to be. Details will be described later.

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

  First, the operation of the refrigeration cycle will be described.

  The refrigeration cycle is operated by a signal from the control unit 69 according to the set temperature in the refrigerator, and the cooling operation is performed. The high-temperature and high-pressure refrigerant discharged by the operation of the compressor 15 is condensed to some extent by a condenser (not shown), and further, refrigerant piping (not shown) disposed on the side and rear surfaces of the refrigerator and the front opening of the refrigerator. Etc.), while condensing and liquefying while preventing condensation in the refrigerator, it reaches a capillary tube (not shown). Thereafter, the capillary tube is depressurized while exchanging heat with a suction pipe (not shown) to the compressor 15 and becomes a low-temperature and low-pressure liquid refrigerant and reaches the cooler 18 in the cooling chamber. Here, the refrigerant in the cooler 18 evaporates, and cool air for cooling each storage chamber is generated in the cooling chamber 16 having the cooler 18.

  Next, the cooling operation by the cold air circulation will be described.

The low-temperature cold air generated in the cooling chamber 16 is sent by the cooling fan 19 from the cooling chamber cold-air conveyance path 30 to the refrigerator compartment 7 and the freezer compartment 9, and the cold air supplied to the refrigerator compartment 7 cools the refrigerator compartment 7. After that, a part of the return cold air is supplied to the vegetable room 8 and each room is cooled to the set temperature. Then, the cold air after cooling each chamber returns to the cooling chamber 16 again, is cooled by the cooler 18, and is circulated to each chamber by the cooling fan 19. In addition, the cold air supply to each of the chambers is performed by the control unit 69 operating / stopping the compressor 15 and the cooling fan 19 on the basis of the temperatures detected by the refrigerator temperature detecting means 65 and the freezer temperature detecting means 67, and the refrigerator temperature damper 31. The freezer damper 34 is controlled to open and close so that each chamber is maintained in a set temperature range.

  Next, the cooling operation of the vegetable compartment 8 will be described.

  In the vegetable compartment 8, the cold air after cooling in the refrigerator compartment is supplied and cooled from the vegetable cold air inlet / outlet 44 provided in the cold air return passage 38 as shown in FIG. Since this cold air has only one vegetable cold air inlet / outlet opening 44 provided in the vegetable compartment 8, during the operation of the cooling fan 19, that is, during the cooling operation, the vegetable compartment 8 and the return passage generated by the cooling fan 19 blow air. Gently flows into the vegetable compartment 8 in such a way that part of the cold air in the vegetable compartment is replaced by the pressure difference between the vegetable compartment 38 and the space between the vegetable storage case 48 and the inner peripheral wall of the vegetable compartment 8. Vegetables, plastic bottles and the like stored in the storage case 48 are indirectly cooled from the outer periphery of the case, flow out from the vegetable cold air inlet / outlet 44 to the return passage 38, and circulate from the cold air return duct 40 to the cooling chamber 16. To do.

  Therefore, the cold air entering and exiting the vegetable compartment 8 is gradual and the amount thereof is relatively small compared to the case where the cold air inlet / outlet is provided separately. Therefore, the amount of cold air in the vegetable room 8 is slightly changed, and most of the cold air remains in the vegetable room 8. That is, the cold air in the vegetable room 8 is maintained in a high humidity state including the moisture transpiration from the vegetables. Therefore, compared with the case where the cool air in the vegetable room 8 is circulated and replaced in large quantities, the drying deterioration of the vegetables can be greatly reduced, and the vegetables can be stored in a cooled state in a considerably better state than before. ing.

  On the other hand, in the refrigerator shown in this embodiment, as shown in FIG. 12, a vegetable room fan 53 is provided at a lower portion of the vegetable room passage portion 50 of the vegetable room 8 and facing the vegetable cold air inlet / outlet 44. When the vegetable compartment fan 53 rotates during the cooling operation, most of the return cold air flowing through the return passage 38 is sucked into the vegetable compartment passage portion 50 from the vegetable cold air inlet 44 and the vegetable compartment fan 53 has a vegetable outlet through the outlet 54. The lower vegetable storage case 49a in the chamber 8 is supplied toward the rear surface.

  Here, in this embodiment, since the vegetable room fan 53 is offset from the vegetable cold air inlet / outlet 44, the opening / closing of the cold air performed through the vegetable cold air inlet / outlet 44 is one vegetable cold air inlet / outlet. Even so, it becomes relatively smooth, and reliable suction uptake becomes possible. That is, as shown by (X) and (Y) in FIG. 12, in the portion near the lower end of the vegetable cold air inlet / outlet 44 close to the central axis of the vegetable room fan 53 (lower part in FIG. 12) In the portion near the upper end of the vegetable cold air inlet / outlet 44 (upper part in FIG. 12) that flows into the vegetable room fan 53 and far from the central axis of the vegetable room fan 53, the cold air is clearly divided so as to flow out of the vegetable room 8 as indicated by Y. become. Accordingly, it is possible to prevent the cold air from entering and exiting even if the single vegetable cold air inlet / outlet 44 is disturbed, resulting in a shortage of cold air being taken in. As a result, the cold air is surely sucked and taken in from the return passage 38 and the vegetable room fan is obtained. It can be supplied into the vegetable compartment 8 from 53 outlets 54.

  And even in this case, since there is only one cold air inlet / outlet, the amount of cold air in the vegetable room is less than in the case where the cold air inlet / outlet is provided separately, and the vegetable room 8 is kept in a high humidity state to dry the vegetables. The effect of preventing deterioration is maintained.

As described above, the cold air taken into the vegetable compartment 8 and supplied toward the vegetable storage case 48 in the vegetable compartment 8 passes through the space between the vegetable storage case 48 and the bottom and inner peripheral walls of the vegetable compartment 8. It flows faster than the flow when it is circulated by the blowing pressure of the cooling fan 19, and returns to the cooling chamber 16 via the return passage 38 from the vegetable cold air inlet / outlet 44 and circulates as described above. At that time, cool air other than the cool air returning to the cooling chamber 16 is circulated from the first vegetable cold air inlet 47 and the second vegetable cold air inlet 51 provided in the upper portion of the vegetable chamber 8. The vegetable storage case 48 in the vegetable compartment 8 is again sucked by the vegetable compartment fan 53 through the vegetable compartment passage portion 50 communicating with these passages 51a and from the outlet 54 of the vegetable compartment fan 53. Is distributed and circulated in the vegetable compartment 8.

  Next, prevention of condensation in the vegetable room 8 will be described.

  Although the vegetable compartment 8 is cooled as described above, it receives cold radiation from the cooling compartment 16 located on the back surface and the freezer compartment 9 located below, and the vicinity of the lower part of the back surface is likely to be lowered in temperature as in the past. . In particular, the cold radiation from the cooling chamber 16 is strong, and the cooling radiation from the cooling chamber 16 itself to the refrigerator compartment damper 31 as well as the cooling chamber 16 itself is the cooling chamber cold air conveyance path 30 zone from the cooling chamber 16 itself. The cooling chamber temperature region is the same as that in the cryogenic temperature zone 16, and strong cold radiation is received at the portion facing the cooling chamber temperature zone up to the refrigerator compartment damper 31, and this portion is easily lowered in temperature.

  The low temperature in the vicinity of the lower back of the vegetable room due to this cold radiation is eliminated by diffusing and circulating the cold air in the vegetable room 8 by driving the vegetable room fan 53 both in the cooling operation and when the cooling is stopped. To do. That is, when the above-described vegetable compartment fan 53 is driven, the cold air in the vegetable compartment 8 diffuses and circulates as described above, and the temperature is dispersed by the diffused and circulated cold air, thereby suppressing the temperature reduction. More specifically, the cold air in the vegetable room 8 is diffused and circulated by the vegetable room fan 53, and the diffused and circulated cold air is cooled and radiated from the cooling room temperature zone located at the back of the vegetable room 8. The temperature in the lower part of the back of the vegetable room, which is likely to be lowered by the cold radiation from the freezer compartment 9 is diffused in the vegetable room 8, the temperature in the vegetable room 8 is lowered to cool the vegetable room 8, and at the same time the back of the vegetable room Suppresses the occurrence of extremely low temperatures and temperature differences near the bottom, preventing condensation.

  When all the chambers are below the set temperature and the operation of the compressor 15 and the cooling fan 19 is stopped, all the cold air eliminates the pressure difference that has been applied by the cooling fan 19 so far, and the density difference caused by the temperature difference. It begins to flow to the equilibrium state by. In this case, since the pressure in the freezer compartment 9 is high next to the cooler chamber cool air conveyance path 30, the cool air in the cool chamber cool air conveyor path 30, the cooling chamber 16, and the freezer compartment 9 continues to spread until the pressure difference is eliminated. At this time, since the cool air in the freezer compartment 9 and the cooler chamber 16 is relatively low in temperature and has a high density, the cool air in at least the cooler cooler conveyance path 30 has flowed downward, The cold air reaches the height of the cold cooling chamber 16. Here, since the cooling chamber 16 and the freezing chamber 9 are filled with cold cold air, the cold cold air flowing down to the cold air return passage 38 connected to the cooling chamber 16 via the freezing chamber 9. It spreads back and flows back through the return passage 38 and reaches the upper end of the cool air accumulated in the cooling chamber 16, that is, the lower end height of the cooling fan 19 opened above the cooling chamber 16.

  In the present embodiment, since the lower end of the vegetable cold air inlet / outlet 44 is installed higher than the height of the bell mouth lower end of the cooling fan 19, it is also possible to suppress backflow of cold air from the vegetable cold air inlet / outlet 44 into the vegetable compartment 8. Thereby, it can suppress that the vegetable compartment 8 is locally cooled by backflow cold air, and it can prevent dew condensation, freezing, and overcooling in the vegetable compartment 8, and can prevent deterioration of preserved vegetables.

As described above, this refrigerator prevents the occurrence of dew condensation due to the local low temperature of the vegetable room 8 during both the cooling operation and the cooling stop, so the cooler 18 for generating cold air is increased in size to the cooling room. Even if 16 is a large large-capacity refrigerator that spans the freezer compartment 9 and the vegetable compartment 8, dew condensation due to cold radiation from the cooling compartment 16 can be suppressed. Therefore, in the refrigerator in the whole area from the small capacity small refrigerator to the large capacity large refrigerator, it is possible to suppress the vegetable deterioration due to the dew condensation water generated by the cold radiation from the cooling chamber 16 and cool and store the vegetables in a good state. It becomes possible. In addition, this refrigerator is a middle vegetable room type refrigerator in which the vegetable room 8 is provided in the upper and lower central parts of the refrigerator body 1 between the refrigerator compartment 7 and the freezer compartment 9, so that condensation occurs as described above. This is effective because it is possible to improve the usability of a user who is mainly used for taking in and out vegetables and the like while preventing and storing the vegetables in a good condition.

  Next, cooling of the vegetable room and prevention of condensation will be described with reference to FIGS.

  FIG. 22 is a flowchart for explaining the cooling operation of the vegetable compartment of the refrigerator in the first embodiment, FIG. 23 is a timing chart showing the operation when the vegetable compartment is soaked by cold air circulation, and FIG. 24 is the vegetable compartment. FIG. 25 is a timing chart showing the temperature equalization and cooling operation by the cold air circulation when the temperature of the vegetable compartment is higher than a predetermined temperature. FIG. 26 and FIG. 26 are flowcharts showing an actual cooling state example of the vegetable compartment.

  As shown in the flowchart of FIG. 22, the refrigerator determines whether or not the cooling operation is possible based on the temperature of the refrigerator compartment 7 or the freezer compartment 9 (S 1), that is, the compressor 15 and the cooling fan 19. Decide whether to drive. For example, if the temperature of the freezer compartment 9 is equal to or higher than the set temperature, the control unit 69 drives the compressor 15 and the cooling fan 19 based on the output from the freezer compartment temperature detection means 67, and the freezer compartment damper 34 and the refrigerator compartment damper 31. And the partial chamber damper (which will be described below by taking as an example the cold room damper 31 which controls the supply of cold air to the vegetable room 8 which is the subject of the present invention for the sake of simplicity), and the cold air generated by the cooler 18 is opened. Is supplied to the vegetable compartment 8 together with the freezer compartment 9, the refrigerator compartment 7, etc., and the refrigerator compartment 7, the vegetable compartment 8, and the freezer compartment 9 are cooled. At this time, the vegetable compartment 8 is gently cooled by taking in cold air in a state of progress by the cooling fan 19 as described above.

  Next, after determining whether or not the cooling operation is possible (S1), the outside air temperature is taken in to determine the outside air temperature state (S2), and the vegetable room fan 53 drive time that is initially set based on the determined temperature result (ON drive time) And OFF time) are set as the timer driving time by correcting the temperature (S3). For example, the timer drive time is set so that the fan drive time is increased in summer when the outside air temperature is equal to or higher than a predetermined temperature, and is shortened in winter when the external temperature is lower than the predetermined temperature.

  Next, the temperature of the vegetable room is taken in, and it is determined whether or not it is within the temperature range at the time of stable cooling, that is, within a predetermined temperature range designed in advance (S4). If it is within the predetermined temperature range, the timer control operation (S5) to go into.

  On the other hand, if it is determined in step (S4) that the temperature of the vegetable room is not less than a predetermined temperature range, for example, the temperature at the time of transition when the temperature of the vegetable room is increased by taking in or out vegetables, the temperature control operation (S6) is entered.

  Furthermore, if it is below a predetermined temperature range, the temperature in the vegetable compartment 8 will be low enough, and the control part 69 will make the vegetable compartment fan 53 into a halt condition (S14). Thereby, the vegetable compartment fan 53 can be rotated to suppress wasteful power consumption, and good cooling and preservation of vegetables can be realized.

  Next, the timer control operation (S5) will be described.

  When the timer control operation (S5) is entered, it is first confirmed whether or not the cooling operation is being performed, that is, whether or not the compressor 15 and the cooling fan 19 are operating (S8).

  If not in operation, the vegetable compartment fan 53 is stopped (S14). Thereby, it is possible to prevent the user from feeling distrustful because the vegetable compartment fan 53 rotates and the sound is heard even though the operation of the refrigerator is stopped.

  If it is in operation, then the refrigerator compartment damper 31 is opened, that is, the refrigerator compartment damper 31 is opened and the cold air from the cooling chamber 16 is supplied to the refrigerator compartment 7 and the vegetable compartment 8 to cool each of these rooms. It is confirmed whether or not (S9).

  If the refrigerator compartment damper 31 is closed and cooling of the refrigerator compartment 7 and the vegetable compartment 8 is stopped, a temperature equalizing operation (S10) for preventing condensation of the vegetable compartment is performed based on the timer driving time. In the temperature equalizing operation when the refrigerator compartment damper 31 is closed, no cold air flows into the return passage 38. Therefore, the cold air in the vegetable compartment 8 is moved in the vegetable compartment 8 by the rotation of the vegetable compartment fan 53 as described above. Circulate to eliminate the temperature difference in the vegetable compartment and suppress the occurrence of condensation.

  Although not shown, the temperature equalizing operation is performed even when the temperature of the refrigerator compartment and the temperature of the vegetable compartment is always low and the refrigerator compartment damper 31 is not opened continuously for a certain period of time or longer. The fan 53 is driven to prevent condensation. That is, the control unit 69 forcibly stops the vegetable compartment fan 53 when the operation of the compressor for generating cold air is stopped within a predetermined time, and based on the timer control operation when the stopped state continues for a predetermined time or longer. The vegetable room fan 53 is also driven.

  Here, since the temperature equalizing operation controls the rotation of the vegetable compartment fan 53 at a predetermined time, it tends to occur when the temperature in the vegetable compartment 8 is constantly detected and the rotation of the vegetable compartment fan 53 is controlled. Variations in temperature control due to temperature detection delay can be reduced, and the temperature in the vegetable compartment 8 can be stabilized and the vegetables can be stored in a cooled state in a good state.

  In addition, the vegetable compartment fan 53 is driven during the temperature equalizing operation (S10) in the timer control operation (S5) for the time set in consideration of the outside air temperature in step (S3). Even if the amount of heat from the outside air received from the air changes, the cold air in the vegetable room can be circulated without excess or deficiency. As a result, the temperature in the vegetable room can be surely equalized, and the dew condensation caused by the temperature difference in the vegetable room can be reliably and efficiently suppressed.

  FIG. 23 shows the driving state of the vegetable compartment fan 53 and the temperature state of the vegetable compartment 8 when the temperature is controlled by the timer control operation. When the compressor 15 is operated and the refrigerator compartment damper 31 is closed, the vegetable compartment fan 53 is shown. And the temperature in the vegetable compartment 8 is equalized to a substantially constant temperature without causing variations due to temperature detection delay or the like. Thereby, the dew condensation resulting from the temperature difference in the vegetable compartment 8 can be suppressed reliably.

  On the other hand, if the refrigeration room damper 31 is open and the vegetable compartment 8 or the like is being cooled as a result of the operation state confirmation in the step (S8), the vegetable compartment fan 53 is further driven together with the above-described driving for temperature equalization. Driving for cooling is also performed, and cooling of the vegetable room 8 + temperature equalizing operation (S12) is performed. In this cooling + temperature equalizing operation, as described above, the cold air flowing in the return passage 38 is actively sucked and taken in by the rotation of the vegetable room fan 53 and is circulated into the vegetable room 8 together with the cold air in the vegetable room. Then, the inside of the vegetable compartment 8 is soaked to cool the inside of the vegetable compartment 8 while suppressing the occurrence of condensation.

  FIG. 24 shows the driving state of the vegetable compartment fan 53 at the time of cooling + temperature equalization by this timer control operation, and cooling rotation and temperature equalization rotation are performed for a predetermined timer driving time set in advance (S13a). As a result, the inside of the vegetable compartment 8 is kept cooled within a predetermined temperature range, and the cold in the vegetable compartment is circulated as described above to prevent a large temperature difference from occurring in the vegetable compartment and suppress the occurrence of condensation.

Here, the vegetable compartment fan 53 during the cooling + temperature equalizing operation (S12) in the timer control operation (S5) is also driven for the time set in consideration of the outside air temperature in step (S3). (S13a). Therefore, as in the temperature-equalizing operation, the cold air in the vegetable compartment can be circulated without excess or deficiency in accordance with the amount of radiant heat from the outside air received from the door side, etc., and the amount of cold air suitable for the temperature in the vegetable compartment. Incorporation is possible. As a result, the temperature in the vegetable compartment can be surely equalized to prevent the occurrence of condensation due to the temperature difference, and the inside of the vegetable compartment 8 can be reliably kept within the predetermined temperature range without being influenced by the outside air temperature. Inside it can be kept cool. Moreover, since the rotation of the vegetable compartment fan 53 is further controlled at the time determined by the timer control operation, it tends to occur when the temperature in the vegetable compartment 8 is constantly detected and the rotation of the vegetable compartment fan 53 is controlled. Variations in temperature control due to temperature detection delay can also be reduced, and the temperature in the vegetable compartment 8 can be stabilized and the vegetables can be cooled and stored in a good state.

  Next, the temperature control operation (S6) will be described.

  When the temperature control operation is started (S6), first, the cooling timer driving time is further corrected according to the temperature of the vegetable room 8 among the timer driving times set in the above-described step (S3) and set as the cooling temperature driving time. (S7).

  Thereafter, similarly to the timer control operation (S5), it is confirmed whether or not the cooling operation is being performed, that is, whether or not the compressor 15 and the cooling fan 19 are operating (S8).

  In this case, since the determination of the temperature of the vegetable room in step (S4) is not less than the predetermined temperature range, the compressor 15 and the cooling fan 19 are naturally in operation, and then the refrigerator compartment damper 31 is open, that is, refrigerated. The room damper 31 is opened and the cool air from the cooling room 16 is supplied to the refrigerating room 7 and the vegetable room 8 to check whether or not each of these rooms is cooled (S9). ) Is in the predetermined temperature range or higher, the compressor 15 and the cooling fan 19 are in operation, the refrigerator compartment damper 31 is open and cooling, and the vegetable compartment fan 53 is driven to produce vegetables. Cooling of chamber 8 + temperature equalizing operation (S12) is performed.

  Here, the driving of the vegetable compartment fan 53 in the cooling + temperature equalizing operation (S12) in the temperature control operation (S6) is based on the cooling temperature drive time corrected based on the vegetable compartment temperature in the step (S7). When the cooling temperature drive time elapses (S13b), the operation is stopped (S14). That is, when the temperature rises due to the outside air entering by opening the vegetable room by taking in and out vegetables, etc., the temperature is stopped by rotating for the cooling temperature driving time set based on the temperature in the vegetable room. Therefore, the vegetable room can be reliably and quickly cooled to a predetermined temperature, and the temperature in the vegetable room can be equalized to prevent condensation.

  FIG. 25 shows the driving state of the vegetable compartment fan 53 by this temperature control operation (S6), and the cooling time for cooling the vegetable room performed in addition to the soaking time for soaking the vegetable compartment is The length increases according to the temperature of the room 8, and the vegetable room fan 53 rotates for an optimum time according to the temperature of the vegetable room 8 (S13b). As a result, the amount of cool air taken into the vegetable compartment can be increased and the inside of the vegetable compartment 8 can be cooled reliably and quickly, and the temperature in the vegetable compartment can be soaked to prevent the occurrence of condensation. In this case, if the drive time of the vegetable room fan 53 is increased and the rotation speed is increased or only the rotation speed is increased, the amount of cool air taken into the vegetable room is increased and the vegetable room 8 is kept at a predetermined temperature in a shorter time. Can be cooled to an effective level.

FIG. 26 is a timing chart showing an example of the cooling state of the vegetable compartment when controlled by the control of the first embodiment. As shown in FIG. 26, when the temperature in the vegetable compartment 8 is within a predetermined temperature range that is a stable temperature state (X), the vegetable compartment fan 53 is cooled and cooled for the timer control operation time determined in step (S3). It drives for temperature equalization, and when the vegetable room 8 is released for taking out vegetables and the vegetable room temperature becomes high (Y), the vegetable room fan 53 is driven according to the temperature in the vegetable room. As the cooling time to cool down increases the temperature of the vegetable room 8 efficiently and the temperature of the vegetable room decreases, the cooling time for driving the vegetable room fan 53 becomes shorter and at the end the temperature of the vegetable room is stable. When the temperature is within the predetermined temperature range (X), the time returns to the timer control operation time determined in step (S3), and the vegetable room is cooled and soaked.

(Embodiment 2)
FIG. 27 is a perspective view for explaining the cold air flow in the rear portion of the cooling chamber of the refrigerator in the second embodiment, and FIG. 28 is a schematic sectional view for explaining the cold air flow in the vegetable room of the refrigerator in the second embodiment.

  In the refrigerator of the second embodiment, a vegetable cold air inlet 45 and a vegetable cold air return port 46 are separately provided in place of the vegetable cold air inlet / outlet 44 described in the first embodiment. That is, the vegetable cold air inlet 45 is provided in the vegetable room 8, and the vegetable cold air return port 46 is positioned above the vegetable cold air inlet 45, for example, in the vicinity of the first passage 47 a, the second passage 51 a, and the vegetable compartment passage portion 50. It is provided.

  Other configurations are the same as those of the first embodiment including control, and the same components are denoted by the same reference numerals and the description thereof is omitted.

  In the case of the second embodiment, the cold air into the vegetable room flows from the vegetable cold air inlet 45 to the cold air return passage 38, and the cold air in the vegetable room 8 flows from the vegetable cold air return port 46 to the cold air return passage 38. And leaked. Therefore, compared with the case where cold air enters and exits from one vegetable cold air inlet / outlet 44, the cold air enters and exits smoothly, and more cold air flows into the vegetable room 8. The cold air is efficiently taken into the vegetable room 8 The inside can be cooled strongly. Therefore, for example, it is effective when the vegetable room 8 is at the lowermost part of the refrigerator body and the bottom of the vegetable room 8 receives heat radiation from the outside air and is not easily cooled.

  Other functions and effects are the same as those in the first embodiment except for the effect of suppressing the deterioration of drying of vegetables by allowing cold air to enter and exit from one vegetable cold air inlet / outlet 44, and a description thereof will be omitted.

  As described above, the refrigerator according to each of the above embodiments has a configuration in which the vegetable room is arranged between the refrigerator compartment and the freezer compartment, and since there is no endothermic amount from the refrigerator compartment / freezer compartment of the vegetable compartment, the stored items in the vegetable compartment The temperature of the vegetable room is stable except during replacement. Therefore, when the vegetable room temperature is stable and the vegetable room temperature is within the predetermined temperature range, it is only necessary to perform a timer-controlled operation that drives the vegetable room fan. When the temperature of the vegetable room is higher than the predetermined temperature range, the vegetable room can be cooled by performing the temperature control operation that drives the vegetable room fan for a time set based on the vegetable room temperature, and optimal vegetable room temperature control can be realized .

  And the refrigerator of each said embodiment can hold | maintain the vegetable room at low temperature at the same time it suppresses generation | occurrence | production of the dew condensation resulting from the temperature difference in a vegetable room, and can always cool and preserve the vegetable in a good state. However, this refrigerator further has the following effects regarding the cooling of the vegetable compartment, so this will be described below.

  First, in this embodiment, the vegetable compartment fan 53 circulates cool air toward the outer periphery of the lower vegetable storage case 49a and the upper vegetable storage case 49b of the vegetable storage case 48, so that the cold air circulated by the vegetable compartment fan 53 is lower. It is possible to prevent the vegetable storage case 49a and the upper vegetable storage case 49b from flowing between the vegetables, and to prevent the deterioration of drying of the vegetables that tend to occur due to the cold air flowing between the vegetables. Vegetables can be stored cold in the state.

Particularly in this embodiment, the lower vegetable storage case 49a and the upper vegetable storage case 49b.
Since the first vegetable cold air suction port 47 and the second vegetable cold air suction port 51, which serve as a cold air suction port that diffuses or circulates in the vegetable compartment, are provided in the upper part of the vegetable storage case 48 constituted by The cold air circulated through the inside flows directly into the first vegetable cold air inlet 47 and the second vegetable cold air inlet 51 without entering the vegetable storage case 48 including the lower vegetable storage case 49a and the upper vegetable storage case 49b. Thus, the vegetables can be more reliably prevented from being dried and deteriorated, and the vegetables can be stored in a cool and fresh state. This can be further increased by bringing the upper opening edge of the upper vegetable storage case 49b closer to the partition plate 5 that also serves as the vegetable room ceiling surface, and more effectively by providing a cover that covers the upper surface opening. Can do.

  In addition, since the vegetable compartment fan 53 is located below the upper opening edge of the vegetable storage case 48 constituted by the lower vegetable storage case 49a and the upper vegetable storage case 49b, it is blown from the vegetable chamber fan 53. The cold air circulates in the vegetable storage case 48, particularly around the bottom surface and lower outer periphery of the lower vegetable storage case 49a. Therefore, the cold air circulated by the vegetable compartment fan 53 is more difficult to enter the vegetable storage case 48, and the dry deterioration of the vegetables caused by the cold air entering and circulating in the vegetable storage case 48 is also ensured from this point. It is possible to prevent and preserve the vegetables in a fresher and better state.

  In this embodiment, the vegetable storage case 48 has a lower vegetable storage case 49a that is divided into left and right sides and a non-vegetable storage portion 59 such as a plastic bottle or a pack (hereinafter referred to as a PET bottle storage portion 59). And a vegetable room fan 53 is provided on the back side of the vegetable room on the side of the container for storing PET bottles 59 so that the cool air in the vegetable room is circulated toward the container 59 for storing PET bottles. Therefore, the cool air from the vegetable compartment fan 53 circulates intensively around the PET bottle storage 59, and efficiently cools the PET bottles and packs stored in the PET bottle storage 59. Can do. In particular, drinking water such as PET bottles and packs stored in the PET bottle storage 59 is effective because it has a larger heat capacity than vegetables and is difficult to cool. It is possible to efficiently suppress the rise, effectively prevent the occurrence of condensation, and at the same time, preserve the vegetables well.

  Particularly in this embodiment, the first vegetable cold air inlet 47 provided in the vegetable compartment 8 together with the vegetable compartment fan 53 is also provided in the portion of the vegetable storage case 48 on the storage portion 59 side such as a plastic bottle. The cold air from the vegetable compartment fan 53 can be circulated more efficiently and intensively to the storage part such as a plastic bottle, which is effective.

  In addition, since the second vegetable cold air suction port 51 that is also another suction port for circulating the cold air in the vegetable room 8 is provided in the vegetable room fan 53 and the upper part of the vegetable room at a substantially diagonal position, The cold air from the vegetable compartment fan 53 circulates through the bottom of the container portion 59 of the vegetable storage case 48 of the vegetable storage case 48 forward and obliquely cuts the inside of the vegetable compartment 8 and circulates in the second vegetable cold air at the top of the vegetable compartment. Since it flows to the suction port 51, it consists of the lower vegetable storage case 49a and the upper vegetable storage case 49b while preventing cold air from entering the vegetable compartment case consisting of the lower vegetable storage case 49a and the upper vegetable storage case 49b. Cold air can be circulated extensively around the outer periphery of the vegetable case, and vegetables and plastic bottles can be effectively cooled.

Further, in this refrigerator, a communication passage 39 is formed between the refrigerated cold air return passage 32 and the refrigerated cold air return passage 33, and when the vegetable compartment fan 53 rotates, the suction force of the vegetable compartment fan 53 causes the low temperature in the refrigerated cold air forward passage 32 to be low. Fresh cold air enters the refrigerated cold air return passage 33 and is supplied into the vegetable compartment 8 from the vegetable cold air inlet / outlet 44 via the return passage 38. That is, the vegetable room 8 is cooled by the return cold air having a relatively high temperature after cooling from the cold room 7, but in this refrigerator, the cold air after cooling the cold room is rotated by the rotation of the vegetable room fan 53. The vegetable room 8 is cooled with cold air that has been cooled by mixing low temperature fresh cold air. Therefore, the vegetable compartment 8 can be effectively cooled, and the vegetable compartment 8 is reliably cooled even when the cooling load condition is bad, for example, when many vegetables, plastic bottles, etc. are temporarily stored. be able to. In addition, the amount of low-temperature fresh cold air taken in through the communication passage 39 can be increased by increasing the number of rotations of the vegetable compartment fan 53, and a large amount of room temperature PET bottles having a large heat capacity are stored in summer. Even at times, this can be reliably cooled. Moreover, since the vegetable compartment 8 can be reliably cooled, the occurrence of dew condensation due to cold radiation from the cooling compartment 16 can be efficiently suppressed, and the vegetables can be stored in a cooled state in a good state.

  Although the embodiment of the present invention has been described above, the configuration described in the above embodiment is shown as an example for carrying out the present invention, and various modifications can be made within the scope of achieving the object of the present invention. Needless to say.

  For example, in the present embodiment, the temperature equalizing operation and the cooling operation of the vegetable room fan 53 are separately described, but the temperature equalizing operation and the cooling operation are performed in one continuous time. It may be made to do.

  In addition, the temperature correction of the vegetable room fan driving time performed when the temperature of the vegetable room 8 is equal to or higher than the predetermined temperature has been described as being performed only for the cooling driving time, but this is also performed for the temperature equalizing driving time. May be selected as appropriate.

  Also, the cooling / cooling stop of the vegetable room, that is, the supply / stop of the cold air to the vegetable room 8 is performed using the refrigerator compartment damper 31, but the vegetable room damper dedicated to the vegetable room is provided / stopped. In this case, (S9) shown in each of the above embodiments may be set as “Open vegetable compartment damper?”.

  In addition, the refrigerator has been described by taking as an example a middle vegetable type refrigerator in which the vegetable compartment 8 is provided between the refrigerator compartment 7 and the freezer compartment 9, but this is a refrigerator in which the vegetable compartment 8 is at the bottom. However, what is necessary is just to have the cooling room 16 installed over the back of the vegetable room 8 and the freezing room 9.

  The refrigerator according to the present invention can suppress the occurrence of dew condensation in the vegetable room and at the same time can cool and hold the vegetable room at a low temperature, and can be a highly reliable refrigerator that cools and stores vegetables in a good state. Of course, it can be widely applied to commercial refrigerators.

DESCRIPTION OF SYMBOLS 1 Refrigerator main body 7 Refrigeration room 8 Vegetable room 9 Freezing room 10, 11, 12 Door 15 Compressor 16 Cooling room 17 Back surface partition wall 18 Cooler 19 Cooling fan 25 Opening for cold air return passage 30 Cooling room cold air conveyance path 31 Refrigeration Room damper 32 Refrigerated cold air return passage 33 Refrigerated cold air return passage 34 Freezer compartment damper 35 Refrigerated cold air inlet 36 Refrigerated cold air return port 37 Outward passage 38 Return passage 39 Communication passage 40 Cold air return duct 42 Refrigerated cold air inlet 43 Refrigerated cold air return port 44 Vegetable cold air Doorway 46 Vegetable cold air return port 47 First vegetable cold air inlet 47a First passage 48 Vegetable storage case 49a Lower vegetable storage case 49b Upper vegetable storage case 50 Vegetable room passage 51 Second vegetable cold air inlet 51a Second Passage 52 Second cold air circulation passage 53 Vegetable room fan 59 Non-vegetable compartment (PET bottle) Etc.)
65 Refrigerating room temperature detection means 66 Vegetable room temperature detection means 67 Freezer room temperature detection means 68 Outside air temperature detection means 69 Control unit

Claims (6)

A cooling fan that circulates cold air to the refrigerator compartment, the vegetable compartment, and the freezer compartment, a vegetable compartment fan that takes in cold air into the vegetable compartment separately from the cooling fan and circulates the cold air in the vegetable compartment, and controls the vegetable compartment fan And a controller that performs a timer control operation for driving the vegetable compartment fan for a predetermined time when the vegetable compartment is within a predetermined temperature range, and the temperature of the vegetable compartment is higher than the predetermined temperature range. A refrigerator configured to perform a temperature control operation for driving the vegetable room fan for a time set based on the temperature of the vegetable room at the time of temperature. The refrigerator according to claim 1, wherein the control unit sets the vegetable room fan driving time during the timer control operation based on the outside air temperature. The controller is configured to drive the vegetable room fan for a time longer than the time set in the timer control operation by correcting the vegetable room fan driving time during the temperature control operation based on the vegetable room temperature. refrigerator. The refrigerator according to any one of claims 1 to 3, wherein the controller is configured to forcibly stop the vegetable compartment fan when the temperature of the vegetable compartment is low outside the predetermined temperature range. The refrigerator according to any one of claims 1 to 4, wherein the controller is configured to forcibly stop the vegetable compartment fan when the compressor for generating cold air is stopped. The control unit forcibly puts the vegetable room fan into a stopped state when the operation of the compressor for generating cold air is stopped within a predetermined time, and drives the vegetable room fan based on the timer control operation when the stopped state becomes longer than a predetermined time. The refrigerator according to any one of claims 1 to 5, wherein the refrigerator is configured.