JP2018109488A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator capable of effectively using cold of a cooler during stop of a compressor and efficiently cooling a refrigeration chamber by suppressing thermal effects on a freezer in the refrigerator having a damper for controlling cold air amount to each storage chamber.SOLUTION: A refrigerator includes: a refrigeration chamber damper for controlling cold air to be supplied from a cooling chamber to a refrigeration chamber on the basis of a refrigeration chamber temperature sensor; a freezer damper for controlling cold air to be supplied from the cooling chamber to a freezer on the basis of a freezer temperature sensor; and a compressor of which operation is controlled on the basis of the freezer temperature sensor. When the compressor is stopped with the refrigeration chamber damper opened and with the freezer damper opened, a cooling fan is operated with the freezer damper closed and the refrigeration chamber damper opened for a predetermined time after the stop of the compressor. During the stop of the compressor, cold of the cooler can be effectively used and the refrigeration chamber can be efficiently cooled by suppressing thermal effects on the freezer.SELECTED DRAWING: Figure 39

Description

  The present invention relates to a refrigerator provided with a damper for controlling the amount of cool air to each storage room.

  In recent years, refrigerators generate cold air in the cooling room on the back of the refrigerator body, and cool the food in each room by circulating the cold air to the refrigerator room, freezer room, vegetable room, etc. by the cooling fan. In addition to a refrigerator compartment damper that adjusts the amount of cold air circulation to the freezer compartment and a freezer compartment damper that controls the amount of cold air circulation to the freezer compartment, the refrigerator compartment and freezer compartment can be efficiently cooled ( For example, see Patent Document 1).

JP 2011-7451 A

  However, in the above conventional refrigerator, the cold air generated by the cooler during operation of the compressor is supplied to the refrigerator compartment and the freezer compartment by the blower via the refrigerator compartment damper and the freezer compartment damper, and is cooled to a predetermined temperature. After the compressor is stopped, the blower is also stopped, and when the temperature in the freezer compartment increases, the compressor is operated again.

  However, since the blower is also stopped when the compressor is stopped, the cooler of the cooler cannot be effectively used while the compressor is stopped, and the cooling efficiency is lowered.

  The present invention solves the above-described conventional problems, and provides a refrigerator capable of efficiently cooling the refrigerator compartment by effectively using the cooler of the cooler while the compressor is stopped and suppressing the heat effect on the freezer compartment. With the goal.

  In order to solve the above-described conventional problems, a refrigerator according to the present invention includes a refrigerating room, a freezing room, a cooler and a blower that are arranged behind the freezing room and supply cold air to the refrigerating room and the freezing room. A cooling chamber in which the cooling air is supplied to the refrigerating chamber from the cooling chamber based on a refrigerating chamber temperature sensor, and the cooling air supplied from the cooling chamber to the freezing chamber is stored in the freezing chamber. A freezer compartment damper controlled based on a temperature sensor; and a compressor whose operation is controlled based on the freezer temperature sensor, wherein the compressor is open when the refrigerator compartment damper is open and the freezer compartment damper is open. When stopped, the blower is operated for a predetermined time after the compressor stops, with the freezer damper closed and the refrigerator compartment damper opened.

  Thereby, the cooler of the cooler can be effectively utilized while the compressor is stopped, and the refrigerator can be efficiently cooled while suppressing the influence of heat on the freezer.

  The refrigerator of the present invention operates the blower with the refrigerator compartment damper opened and the refrigerator compartment damper closed for a predetermined time after the compressor stops when the compressor is stopped with the refrigerator compartment damper opened and the refrigerator compartment damper opened. As a result, it is possible to effectively use the cold energy of the cooler while the compressor is stopped, to efficiently cool the refrigerating room while suppressing the heat effect on the freezing room, and to provide a refrigerator with high energy savings.

Front view of the refrigerator in Embodiment 1 of the present invention Front view showing the inside of the refrigerator Cross section of the refrigerator Explanatory drawing explaining the cold air flow of the refrigerator Front view showing the freezer of the refrigerator Sectional drawing which shows the cooling chamber of the refrigerator Sectional view showing vegetable compartment duct and refrigerator compartment return duct of the refrigerator An exploded perspective view showing a cooling chamber portion of the refrigerator The exploded perspective view which looked at the cooling room part of the refrigerator from the cooling room side The perspective view which looked at the cooling chamber from the cooling chamber side, leaving a part of the cooling chamber forming plate of the refrigerator Front view showing the relationship between the cooling chamber forming plate and the vegetable compartment duct of the refrigerator as viewed from the freezer compartment side The perspective view which shows the relationship between the cooling chamber formation board and vegetable compartment duct of the refrigerator seeing from the freezer compartment side Perspective view showing the refrigerator compartment of the refrigerator Sectional drawing which shows the refrigerator compartment of the refrigerator The figure which showed typically the horizontal cross section of the A section of FIG. 14, the B section, and the C section. Horizontal sectional view of the refrigerator compartment duct of the refrigerator Explanatory drawing which shows the discharge port of the refrigerator compartment duct of the refrigerator The principal part expanded sectional view which shows the refrigerator compartment of the refrigerator Front view showing the inside of the refrigerator in the refrigerator The enlarged front view which shows the principal part of the refrigerator compartment inside the refrigerator An exploded perspective view showing a storage room of the refrigerator The perspective view which looked at the rear part of the partial room in the storage room of the refrigerator from the back The enlarged perspective view which looked at the rear part of the partial room in the storage room of the refrigerator from the back The enlarged perspective view which looked at the rear part of the partial room in the storage room of the refrigerator from the front side back part The expanded side view which shows the deodorizing unit mounting part of the rear part of the partial chamber in the storage room of the refrigerator The expansion perspective view which shows the deodorizing unit mounting part of the rear part of the partial chamber in the storage room of the refrigerator The perspective view which removed the cooler of the refrigerator and looked at the cooling room from the back Front view of the refrigerator seen from the back with the refrigerator cooler removed Front view showing the back plate of the freezer compartment of the refrigerator Disassembled perspective view of cooling chamber components of the refrigerator The perspective view which looked at the cooling room of the refrigerator from the front lick information The expanded sectional view which shows the principal part of the cooling chamber of the refrigerator The expanded sectional view of the other example which shows the principal part of the cooling chamber of the refrigerator (A) The perspective view which shows the freezer compartment damper of the refrigerator, (b) Sectional drawing of the freezer compartment damper Control block diagram of refrigerator of this embodiment The flowchart which shows the basic control of the cooling system of the refrigerator of this Embodiment Flow chart of damper opening control of refrigerator cooling system of the present embodiment Flow chart of damper opening control of refrigerator cooling system of the present embodiment The flowchart which shows the off cycle control of the cooling system of the refrigerator of this Embodiment Timing chart showing off-cycle control of the refrigerator cooling system of the present embodiment The flowchart which shows the defrost control of the cooling system of the refrigerator of this Embodiment Timing chart showing the defrost control of the refrigerator cooling system of the present embodiment The flowchart which shows control of the vegetable compartment heater by the humidity sensor of the vegetable compartment of the refrigerator of this Embodiment The graph which shows the relationship between the external temperature of the vegetable compartment heater by the humidity sensor of the vegetable compartment of the refrigerator of this Embodiment, and an electricity supply rate The flowchart which shows the cooling system control performed based on the detection result of the storage amount in the refrigerator compartment in the refrigerator of this Embodiment

  The invention according to claim 1 is a refrigerating room, a freezing room, a cooling room which is disposed behind the freezing room and which supplies a cooler and a blower for supplying cold air to the refrigerating room and the freezing room; A refrigerating room damper for controlling the cold air supplied from the cooling room to the refrigerating room based on a refrigerating room temperature sensor, and a cold air supplied from the cooling room to the freezing room based on a freezer temperature sensor. A freezer compartment damper and a compressor whose operation is controlled based on the freezer compartment temperature sensor, and when the compressor is stopped when the refrigerator compartment damper is open and the freezer compartment damper is open, the compressor The blower is operated with the freezer damper closed and the refrigerator colder damper open for a predetermined time after the stop, and the cooler cooler can be used effectively while the compressor is stopped, and the heat effect on the freezer can be reduced. Efficiently cools the refrigerator compartment Come, it is possible to provide a highly energy-efficient refrigerator.

  According to a second aspect of the present invention, in the first aspect of the present invention, the predetermined time after the compressor is stopped is a time until the cold room temperature sensor reaches a temperature at which the cold room damper is closed. Yes, it is possible to effectively use the cool heat of the cooler while the compressor is stopped.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the rotational speed of the blower that operates with the freezer compartment damper closed and the refrigerator compartment damper open for a predetermined time after the compressor is stopped. Is smaller than the number of revolutions during the operation of the compressor, can further effectively use the cooler of the cooler while the compressor is stopped, efficiently cool the refrigerator compartment by suppressing the heat effect on the freezer, A refrigerator with high energy saving can be provided.

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

(Embodiment 1)
1-4 is a figure explaining the whole refrigerator structure, FIGS. 5-12 is a figure explaining the cold-air supply structure from a cooling room to a vegetable room, FIGS. 13-26 is a figure explaining a refrigerator compartment structure, FIG. 27 to FIG. 34 are diagrams for explaining a configuration of a portion extending from the freezing chamber to the cooling chamber.

<1-1. Overall configuration of refrigerator>
First, the whole structure of a refrigerator is demonstrated using FIGS.

  1 to 4, the refrigerator according to the present embodiment includes a refrigerator body 1 having an opening at the front. The refrigerator body 1 includes a metal outer box 2, a hard resin inner box 3, and the outside. It is comprised with the foam heat insulating material 4 filled with foam between the box 2 and the inner box 3, and the several storage chamber is partition-formed by the partition plates 5, 6 grade | etc.,. Each storage chamber of the refrigerator main body 1 is openable and closable by a rotary door 7 or drawer type doors 8, 9, 10, 11 adopting the same heat insulation structure as the refrigerator main body 1.

  The storage room formed in the refrigerator main body 1 includes an uppermost refrigeration room 14, a switching room 15 provided under the refrigeration room 14 and capable of switching a temperature zone, an ice making room 16 provided beside the switching room 15, The freezing room 18 provided between the switching room 15 and the ice making room 16 and the lowermost vegetable room 17 is comprised. The refrigerating chamber 14 is provided with a plurality of shelf plates 20, and a lower portion thereof is provided with a partial chamber 21 and a chilled chamber 22 having different cooling temperature zones, which are stacked in two upper and lower stages.

  The refrigerator compartment 14 is a storage compartment for refrigerated storage, and is cooled at a low temperature that does not freeze, specifically, usually set to 1 to 5 ° C. Further, the partial chamber 21 provided in the refrigerator compartment is set to −2 to −3 ° C. suitable for micro-freezing preservation, and the chilled chamber 22 is set to a temperature around 1 ° C. lower than the refrigerator compartment 14 and higher than the partial chamber 21. Set and cooled.

  The vegetable room 17 is a storage room whose temperature is set equal to or slightly higher than that of the refrigerated room 14, and is specifically set to 2 to 7 ° C. and cooled. Since the vegetable compartment 17 becomes high humidity due to moisture generated from stored food such as vegetables, condensation may occur if it is too cold locally. For this reason, the amount of cooling is reduced by setting the temperature relatively high, and the occurrence of condensation due to local overcooling is suppressed.

  The freezing room 18 is a storage room set in a freezing temperature zone, specifically, normally set at −22 to −18 ° C. and cooled, but for example, −30 ° C. and −25 for improving the frozen storage state. It may be cooled at a low temperature such as ° C.

  The switching chamber 15 is a storage chamber in which the temperature in the warehouse can be changed, and can be switched from a refrigeration temperature zone to a freezing temperature zone according to the application.

  On the other hand, a cooling chamber 23 is provided on the back surface of the freezing chamber 18, and a cooling device 24 that generates cold air and a cooling fan 25 that supplies the cold air to the chambers are installed in the cooling chamber 23. . Further, a defrosting means 26 (hereinafter referred to as a glass tube heater) constituted by a glass tube heater or the like is provided below the cooler 24.

  The cooler 24 includes a compressor 27, a condenser (not shown), a heat radiating pipe (not shown), and a capillary tube (not shown) connected in a ring shape to form a refrigeration cycle. Then, cooling is performed by circulation of the refrigerant compressed by the compressor 27.

  Moreover, the cooling fan 25 is provided above the cooler 24, and the refrigerator compartment 14, the freezer compartment 29, the vegetable compartment duct 30, and the refrigerator compartment 14, the freezer compartment 18, the vegetable compartment 17, etc. which are connected to the downstream side thereof. Cooling air is supplied to each of these chambers to cool them.

  Hereinafter, the cooling chamber 23, the refrigerator compartment 14, the freezing compartment 18, the vegetable compartment 17, and the cooling configuration thereof will be described.

<1-2. Cooling chamber and cool air supply configuration>
The cooling chamber and the cold air supply configuration will be described with reference to FIGS. 3 and 5 to 12.

  The cooling chamber 23 is on the back of the freezing chamber 18 and is formed by the cooling chamber forming plate 31 and the inner box 3 as shown in FIG. 6, and cooling is performed by mounting the cooling fan 25 on the upper portion of the cooling chamber forming plate 31. A cooling fan 25 is positioned above the vessel 24. A freezer compartment back plate 32 is mounted on the front side of the cooling chamber forming plate 31 to cover the downstream side of the cooling fan 25 and to form a freezer compartment duct 29 communicating with the cooling fan downstream side between the cooling chamber 23. ing.

And in the downstream of the said cooling fan 25, the refrigerator compartment duct 28 of the refrigerator compartment 14 and the vegetable compartment 1
Seven vegetable compartment ducts 30 are individually and independently connected at different positions. More specifically, the upper surface of the upper part on the downstream side of the cooling fan is connected to the refrigerator compartment duct 28 via the first cold air supply port 33 provided in the partition plate 5 that partitions the refrigerator compartment 14 and the freezer compartment 18 as shown in FIG. As shown in FIGS. 10, 11 and 12, the second cold air supply port 34 is provided on the side of the upper part downstream of the cooling fan, and the vegetable compartment duct 30 is connected thereto. That is, the refrigerator compartment duct 28 and the vegetable compartment duct 30 are individually connected to the cooling compartment 23 at different positions. Then, the cold air generated by the cooler 24 is supplied to the first cold air supply port 33 and the second cold air supply port 34 separately by the cooling fan 25 and supplied to the refrigerator compartment duct 28 and the vegetable compartment duct 30. To do.

  A heater cover 35 having an umbrella-like cross section covering the cooler 24 glass tube heater 26 is installed below the cooler 24 as shown in FIG. A drain outlet 36 for discharging is provided.

<1-3. Cold room and its cooling configuration>
Next, the refrigerator compartment and its cooling configuration will be described with reference to FIG. 3 and FIGS.

  The refrigerator compartment 14 is located in the uppermost part of the refrigerator main body 1 and has a plurality of shelf boards 20 as shown in FIGS. 3 and 14, and the refrigerator compartment duct 28 described above is provided on the back surface.

  As shown in FIG. 21, the refrigerator compartment duct 28 is configured by covering the refrigerator compartment side surface of a duct member 28a made of foamed polystyrene with a resin duct cover 28b, and partitioning the refrigerator compartment 14 and the freezer compartment 18 from each other. The first cold air supply port 33 of the plate 5 is attached to the back of the refrigerator compartment so as to cover the first cold air supply port 33 and communicated with the cooling chamber 23. A refrigeration room damper 37 is incorporated in the first cold air supply port 33, and the amount of cold air supplied from the cooling chamber 23 to the refrigeration room 14 is controlled by opening and closing the refrigeration room damper 37. The refrigerator compartment damper 37 is fixed to the first cold air supply port 33 by a damper fixing frame 38.

  The refrigerating room damper 37 is a double damper having a refrigerating room damper part 39 for controlling the amount of cold air supplied to the refrigerating room 14 and a partial room damper part 40 for controlling the amount of cold air supplied to the partial room 21. It is configured to be driven by one refrigeration and partial motor (not shown) in the refrigeration damper drive motor unit 41.

  On the other hand, among the partial chamber 21 and the chilled chamber 22 provided in the lower part of the refrigerator compartment 14, the chilled chamber 22 positioned above is provided with a ceiling plate 43 serving as a bottom shelf as shown in FIGS. The chilled room container 44 is formed so as to be fully inserted into and out of the refrigerating room between the partial room 21 located below the chilled room. A chilled air inlet 22a is provided behind the chilled chamber 22 so as to communicate with the downstream side of the refrigerated room damper portion 39 of the refrigerated chamber duct 28. The chilled air inlet 22a is used to cool the chilled air inlet 22a. .

  As shown in FIG. 18, the chilled chamber 22 is provided with a slit-like cold air return port (chilled side) 45 at the rear part of the ceiling plate 43, and the cold air return port (chilled side) 45 at the rear part of the chilled chamber container 44. A cold air return passage portion (chilled side) 46 connected to the refrigerator compartment 14 is provided. Further, an opening 48 connected to the inside of the refrigerator compartment 14 is provided at the front end of the chilled compartment container 44 between the lower portion of the chilled compartment door / handle portion 47 as shown in FIG. Flows through the gap (not shown) on the outer periphery of the chilled chamber container 44 and flows into the cold return passage section (chilled side) 46 together with the cold air after cooling the chilled chamber overflowing from the chilled chamber container 44. .

In the chilled chamber 22, a temperature adjusting heater 49 is laid on the ceiling plate member 50 of the partial chamber 21 below the chilled chamber container 44, and the chilled chamber temperature is set by cold radiation from the partial chamber 21 located below. When the temperature is lower than the temperature, the temperature adjusting heater 49 is energized and maintained at the set temperature. The temperature adjusting heater 49 is controlled by a chilled chamber temperature sensor (not shown) provided at an appropriate position in the chilled chamber 22.

  On the other hand, the partial chamber 21 located below the chilled chamber 22 stores water by an inner wall surface of the inner box of the refrigerator body 1, a water tank chamber forming plate (not shown), and a ceiling plate member 50 that also serves as a bottom surface of the chilled chamber 22. A compartment is formed on the side of the tank chamber, and the front opening is openable and closable by a partial chamber door 51. A partial chamber container 52 is provided inside the partial chamber 21 so as to be freely inserted and removed.

  A heat insulating material 53 made of foamed polystyrene or the like is incorporated in the ceiling plate member 50 constituting the partial chamber 21, and the partial cold air communicating with the heat insulating material 53 on the downstream side of the partial chamber damper portion 40 of the refrigerator compartment duct 28 described above. A passage 54 is formed to supply cold air into the partial chamber 21 for cooling.

  Further, as shown in FIGS. 18 and 22 to 24, the partial chamber 21 is provided with a slit-like cold air return port (partial side) 55 at the rear portion of the ceiling plate member 50, as shown in the chilled chamber 22. A cold air return passage portion (partial side) 56 is formed by providing a space behind the partial chamber container 52, and the refrigeration chamber cold air and the chilled chamber in the cold air return passage portion (chilled side) 46 behind the chilled chamber 22. The cool air flows to the cool air return passage portion (partial side) 56.

  Further, the partial chamber 21 is provided with a cold air confluence return port 57 communicating with the cold air return passage portion (partial side) 56 at the rear portion of the partition plate 5 serving as a bottom surface thereof, and the cold air confluence return port 57 is provided with a cold room return duct 58. Are connected so that the cold air that has cooled the refrigerator compartment 14 and the chilled chamber 22 merges with the partial chamber cooling cold air that overflows from the partial chamber container 52 and returns to the cooling chamber 23.

  That is, the duct part for returning the cold air in the refrigerator compartment 14, the chilled compartment 22, and the partial compartment 21 to the cooling compartment 23 is formed using the rear space of the chilled compartment 22 and the partial compartment 21.

  The cold air return port (chilled side) 45 and the cold air return port (partial side) 55 are provided at positions vertically opposite to each other, and the cold air return port (partial side) 55 and the cold air merging return port 57 are shifted from each other. It is provided.

  Further, the refrigeration chamber return duct 58 for returning the cold air to the cooling chamber 23 is installed on the side (side) of the cooling chamber 23 as shown in FIG. 4, FIG. 27, FIG. It is configured to return to the cooling chamber 23 by opening it in the lower side surface of 23. The refrigerating chamber return duct 58 forms a duct passage portion with the inner surface of the rear wall by pressing a concave groove 58b provided on the rear surface thereof against the inner wall surface of the rear surface of the inner box 3.

  Furthermore, in the partial chamber 21, the portion between the cold air return port (partial side) 55 and the cold air merging return port 57 of the cold air return passage portion (partial side) 56, as shown in FIG. 19 and FIG. A refrigerator temperature sensor 59 for detecting the temperature of the refrigerator compartment 14 to control the refrigerator compartment 39 is provided. A partial chamber temperature sensor 60 for detecting the temperature of the partial chamber 21 and controlling the partial chamber damper section 40 is provided at the opposite diagonal portion across the refrigerator compartment temperature sensor 59 and the refrigerator compartment duct 28. .

  Further, a deodorizing unit 61 is provided between the cold air return port (partial side) 55 of the cold air return passage portion (partial side) 56 and the cold air merging return port 57 so as to follow the flow of the cold air as shown in FIGS. Is detachably provided.

  The deodorizing unit 61, the refrigerating room temperature sensor 59, and the partial room temperature sensor 60 are all equipped with a mounting portion 28bb (a refrigerating room temperature sensor 59 and a partial room temperature sensor 59) provided in a part of the duct cover 28b constituting the refrigerating room return duct 58. A mounting portion for the room temperature sensor 60 is attached to and integrated with a chamber temperature sensor 60 (not shown).

  15 is a horizontal cross-sectional view of part A (refrigerating room damper part), a horizontal part of B part (back of the partial room), and a horizontal part of C (refrigerating room duct part) in the refrigerating room duct 28 of FIG. A cross-sectional view is schematically shown.

  In FIG. 15, W / D (hereinafter referred to as aspect ratio) represented by the ratio of the long side W and the short side D of the duct member 28a in the refrigerator compartment duct 28 is an A portion aspect ratio (= W1 / D1), Assuming that the B part aspect ratio (= W2 / D2) and the C part aspect ratio (= W3 / D3), there is a relationship of A part aspect ratio <B part aspect ratio <C part aspect ratio.

  16 is a horizontal sectional view of the refrigerator compartment duct 28, and FIG. 17 is an explanatory view showing a discharge port of the refrigerator compartment duct 28. As shown in FIG.

  16 and 17, the right and left side portions of the duct cover 28b covering the refrigerator compartment side surface of the duct member 28a are provided with extending ribs 28c that are integrally formed extending left and right.

  The extending rib 28c has an inclined surface inclined to the back surface side, and the end portion extends further to the back side with a larger angle. The extending rib 28c extends to such an extent that the side discharge port 28d is not directly visible when the user views the refrigerator compartment from the front.

  Further, the lower surface of the side discharge port 28d has an inclined surface that is upward with respect to the flow of cold air.

  Moreover, the side wall of the inner box 3 has a recessed part in front of each shelf board 20 in the refrigerator compartment 14, and the refrigeration which detects the illumination intensity of the light from the LED illumination 80 at the time of closing and the LED illumination 80 which is illumination in a recessed part. A substrate including the room light sensor 81 is embedded, and a transmissive illumination cover is provided to cover the recess.

  And the cooling system of a refrigerator is controlled based on the detection result of the refrigerator compartment light sensor 81 which detects the illumination intensity of light from LED at the time of a door closing. Details will be described later.

<1-4. Freezer room and its cooling configuration>
Next, the freezer compartment and its cooling configuration will be described with reference to FIGS. 2 and 3 and FIGS.

  The freezer compartment 18 is below the refrigerator compartment 14 and in front of the cooler compartment 23, and the freezer compartment container 62, which is composed of a lower container 62a and an upper container 62b placed thereabove, is opened and closed by the drawer 11 being opened and closed. It is provided so that it can be inserted and removed freely. Then, as described above, the freezer compartment back plate 32 is disposed between the freezer compartment plate 23 and the freezer compartment back plate 32 and the cooler chamber forming plate 31 so as to communicate with the cooling fan downstream side of the cooler chamber 23. A chamber duct 29 is formed.

  As shown in FIG. 24 and the like, the freezer compartment back plate 32 is provided with cold air outlets 63 in a plurality of upper and lower stages, and the uppermost cold air outlet 63 supplies cold air to the ice making chamber 16 and the switching chamber 15. The cold air outlet 63 in the middle stage supplies cold air to the upper container 62b of the freezer compartment 62, and the cold air outlet 63 in the lowermost stage supplies cold air to the lower container 62a.

  Further, as shown in FIG. 24 and the like, the freezing chamber 18 is provided with a freezing cold air return port 64 communicating with the lower portion of the cooling chamber 23 at the lower portion of the freezer rear plate 32. As shown in FIG. 29, the freezing / cooling air return port 64 is composed of a freezing chamber side opening frame portion 65 and a cooling chamber side opening frame portion 66. It is inclined so as to be located on the 23 side. The freezing / cooling air return port 64 is provided with a grill 67 on the freezer side opening frame portion 65, and a freezing chamber damper 68 is provided on the cooling chamber side opening frame portion 66.

  The grill 67 provided in the freezer compartment side frame 65 rectifies the cold air flowing from the freezer compartment 18 to the cooling compartment 23, and each grille piece 69 is inclined so that the end portion of the cooling compartment is located above. In addition, the length of the front and rear is increased as the lower grill piece 69 is formed, and the shape is along the rear face of the freezer compartment 62 in the freezer compartment 18.

  On the other hand, the freezer compartment damper 68 provided in the cooling chamber side opening frame portion 66 controls the opening and closing of the cool air supplied to the freezer compartment 18, and as shown in FIG. 31, a heat resistant resin such as polyphenylene sulfide resin (PPS resin). A plurality of flaps 71 formed of the same heat-resistant resin, in this example, three flaps 71 are provided on the damper frame 70 formed in (1). The freezer damper 68 is configured to pivot on the cooling chamber side end of each of the plurality of flaps 71 and open to the cooling chamber 23 side opposite to the freezer chamber 18 as shown in FIG. The structure is driven by a refrigeration damper driving motor unit 72 fixed to one end of the damper frame 70. In FIG. 31, a plurality of flaps 71 are shown when the solid line number assignment line is closed and when the broken line number assignment line is opened.

  Further, the freezer compartment damper 68 is elastically engaged with a damper frame 70 in a state where the freezer damper driving motor unit 72 is fixed to a claw piece 73 provided in the cooling chamber side opening frame 66 as shown in FIG. Accordingly, the cooling chamber forming plate 31 is attached to the cooling chamber forming plate 31 as a unit, and the cooling chamber damper 37 has a cooling chamber side inclined along the inclination of the cooling chamber side opening frame portion 66 so as to be positioned below the freezing chamber side. is there.

  Furthermore, as can be understood from FIG. 29, the freezer compartment damper 68 is provided so that the cool air flowing to the cooling chamber 23 along each of the plurality of flaps 71 flows to the lower end edge of the cooler 24. In this example, the upper part of the freezer damper 68 (the upper piece of the damper frame 70) is located above the lower edge of the cooler 24, and the lower part (the lower part of the damper frame 70) is the cooler 24. By providing it so as to be located below the lower end of the cooler, the cool air flows from the lower end edge of the cooler 24 to the lower part.

  In addition, the freezer compartment damper 68 is provided such that its lower part (the lower part of the damper frame 70) is located above the glass tube heater 26, so that the warm and cool air heated by the glass tube heater 26 during defrosting is ensured. It is set to touch.

  On the other hand, the lower side 66a of the cooling chamber side opening frame portion 66 supporting the freezing chamber damper 68 is a double wall, and its lower surface is arcuate and protrudes into the cooling chamber 23 (from the bottom surface 23a of the cooling chamber 23). As a form protruding to the glass tube heater 26 side), the radiation heat from the glass tube heater 26 is prevented from being directly irradiated, and the gap portion 66b of the double wall portion faces the freezer compartment 18 and is opened. It is set as the structure which suppresses cooling with freezer compartment cold air and heating up excessively.

Further, as shown in FIG. 25, the freezing chamber damper 68 is arranged so that the freezing damper driving motor unit 72 is removed from the heater portion 26a so as not to face the heater portion 26a of the glass tube heater 26 in the longitudinal direction of the glass tube heater 26. It is arranged so as to be located in a place shifted toward the direction. In this example, the refrigeration damper driving motor unit 72 is positioned on the side of the refrigeration chamber return duct 58 beside the cooling chamber 23 so that the refrigeration damper driving motor unit 72 is positioned outside the heater portion 26a. However, the plurality of flaps 71 of the freezer damper 68 are positioned closer to the center line of the cooler 24.

  In addition, the freezer compartment damper 68 is provided only in the freezer cold air return port 64, and no cooler discharge passage is provided from the cooler chamber 23 to the cool air outlet 63, and the cooler chamber 23 and the freezer compartment 18 are in communication with each other. It is kept in.

<1-5. Vegetable room and its cooling configuration>
Next, the vegetable room and its cooling configuration will be described with reference to FIGS. 3, 4 and 8 to 12.

  As shown in FIG. 3, the vegetable compartment 17 is located at the lowermost part of the refrigerator body 1 below the freezer compartment 18, and, like the freezer compartment 18, the vegetable compartment container 17 a is provided so that it can be freely inserted and removed by opening and closing the door 10. It is. The vegetable compartment duct 30 for supplying cold air to the vegetable compartment 17 is arranged by being superposed on the front surface of the refrigeration compartment return duct 58 beside the cooling compartment 23 as shown in FIGS. As shown in FIG. 10, it is connected to a second cold air supply port 34 provided in the cooling chamber 23.

  As described above, the second cold air supply port 34 is formed separately and independently from the first cold air supply port 33 serving as the cold air supply port to the refrigerator compartment 14. That is, the second cold air supply port 34 is below the partition plate 5 that partitions the refrigerator compartment 14 and the freezer compartment 18 located above the cooler compartment 23, that is, within the rear projection area of the freezer compartment 18, and the cooling fan 25. Is provided in the downstream portion of the cooling fan at substantially the same height. And the lower end of the vegetable compartment duct 30 connected to this 2nd cold air supply port 34 is opened to the upper part of the vegetable compartment 17, and cold air is supplied to the vegetable compartment 17.

  The vegetable compartment duct 30 has an opening 74 at its upper end and an abutment connection to the second cold air supply port 34. In the vicinity of this connection portion, specifically, in the height position range substantially the same as that of the cooling fan 25. A vegetable room damper 75 is incorporated.

  Further, as shown in FIG. 8, the vegetable compartment damper 75 is fitted into a concave groove 58b which is a vegetable compartment duct passage portion formed on the front surface of the refrigerating room return duct 58, and is formed on the front surface of the concave groove 58b of the refrigerating room return duct 58 in this state. The vegetable compartment duct 30 is fitted and mounted so as to be sandwiched and fixed between the refrigerator compartment return duct 58 and the vegetable compartment duct 30. The vegetable compartment duct 30 and the refrigerating compartment return duct 58 are formed of a material having elastic force such as foamed polystyrene, and the airtightness of the vegetable compartment damper 75 is secured at the same time by the elastic force. It is as composition to do.

  The vegetable compartment damper 75 is configured such that a damper piece 75a driven by the vegetable damper drive motor unit 76 opens in the opposite direction to the cold air flowing through the vegetable compartment duct 30, in this example, upward. This is the direction opposite to the damper opening direction of the refrigerator compartment duct 28 described above.

  The cold air after cooling the vegetable compartment 17 is returned to the cooling chamber 23 through a vegetable compartment return duct (not shown) provided on the ceiling surface.

  Also, in the vegetable compartment 17, the vegetable case supported by the door frame fixed to the door 10 of the vegetable compartment and the upper vegetable supported by the vegetable case side upper flange so as to cover the upper surface of the vegetable case are covered. The vegetable case and the upper vegetable case each have a structure with improved sealing performance. Thereby, the transpiration | evaporation of the water | moisture content generate | occur | produced from the vegetable accommodated inside, a fruit, etc. can be suppressed, and the freshness of vegetables, a fruit, etc. can be improved.

  Moreover, the vegetable compartment 17 side of the partition plate 6 that insulates the vegetable compartment 17 and the freezer compartment 18 from heat has a recess, and a mist generating device is provided inside the recess. The mist generator has a high voltage generator and an electrode, and the electrode is supplied with moisture collected by dew condensation inside the storage.

  In addition, the substrate that houses the high voltage generator is provided with a vegetable room humidity sensor 78 that detects the humidity in the vegetable room 17.

  Further, a vegetable room heater 79 is provided on the vegetable room 17 side of the partition plate 6 that insulates the vegetable room 17 and the freezing room 18 from each other, and the detected humidity of the vegetable room humidity sensor 78 provided on the top surface of the vegetable room 17 is adjusted. Accordingly, the energization of the vegetable room heater 79 is controlled. Details will be described later.

  About the refrigerator comprised as mentioned above, the control flow and an effect are demonstrated below using a block diagram and a flowchart.

<2-1. Basic cooling control>
FIG. 35 is a control block diagram of the refrigerator of the present embodiment, and FIG. 36 is a flowchart showing basic control of the refrigerator cooling system of the present embodiment.

  In FIG. 35, the input information of the microcomputer 90 that controls the cooling system of the refrigerator includes the outside air temperature sensor (ATC) 91, the freezer temperature sensor (FCC) 92, the refrigerating room temperature sensor (PCC) 59, the partial room temperature sensor (PFC). ) 60, vegetable room temperature sensor (VCC) 93, cooler temperature sensor (DFC) 94, door open / close detection means 95, external illuminance sensor 96, refrigerating room light sensor 97, and the output control device of the microcomputer 90 is a compressor (Comp) 27, Cooling fan (FC fan) 25, Cold room damper (PC damper) 37, Partial room damper (PF damper) 98, Vegetable room damper (VC damper) 75, Freezer room damper (FC damper) 68, Removal A frosting means (defrosting heater) 26 is provided.

  In FIG. 36, when the refrigerator is turned on (S-1), the outside temperature sensor (ATC) 91, the freezer temperature sensor (FCC) 92, the refrigerating room temperature sensor (PCC) 59, and the partial room temperature sensor (PFC). 60, compressor (comp) 27, cooling fan (FC fan) 25, refrigeration room damper (PC damper) 37, partial room damper (PF damper) 98 based on each temperature information of vegetable room temperature sensor (VCC) 93 The normal temperature control for controlling the vegetable compartment damper (VC damper) 75 and the freezer compartment damper (FC damper) 68 is started (S-2).

  Then, the information on the door opening / closing detection means 95, the external illuminance sensor 96 for detecting the brightness around the refrigerator, or the storage amount information by the refrigerator light sensor 97 is used to predict a time zone when the refrigerator is less used, thereby saving energy. It is determined whether or not to shift to the mode (S-3).

  If the energy saving mode is not entered, damper opening / closing control is performed so that the flaps of the dampers are fully opened or fully closed (S-7).

  When shifting to the energy saving mode, it is determined whether the outside air temperature sensor (ATC) 91 is higher than a predetermined temperature (ATC ≧ T1) (S-4). When the outside air temperature sensor (ATC) 91 is higher than a predetermined temperature, damper opening control is performed to control the opening / closing angle of the flaps of the refrigerator compartment damper (PC damper) 37 and the freezer compartment damper (FC damper) 68 (S-5). . In addition, the concrete control in damper opening degree control (S-5) is mentioned later.

In S-4, when the outside temperature sensor (ATC) 91 is lower than the predetermined temperature (T1), the refrigerator compartment damper (PC damper) 37 is opened at the initial stage when the compressor (comp) 27 is stopped,
Off-cycle control for operating the cooling fan (FC fan) 25 is performed (S-6). The specific control in the off cycle control (S-6) will be described later.

  The above-described controls are repeated until a defrost signal for starting the defrosting means (defrosting heater) 26 of the cooler 24 is input (S-8). When a defrost signal is received, defrost control is performed (S-9). Note that specific control in the defrost control (S-9) will be described later.

  As described above, the refrigerator according to the present embodiment includes a storage chamber, a cooling chamber 23 in which a cooler 24 for supplying cold air to the storage chamber and a blower (cooling fan 25) are housed, and a cooling chamber 23. A damper that controls the cool air supplied to the storage chamber in a duct, and the damper includes a flap and a drive device, and the operation of the flap by the drive device is performed by flap opening / closing control (S-7). It is determined whether or not the flap opening degree control (S-5) shifts to the energy saving mode (S-3), and is controlled according to the result according to the result. Only when it is desired to reduce the temperature fluctuation, the flap opening degree control (S-5) of each damper can be performed.

  In other words, it is a technical feature that it does not perform flap opening control of each damper more than necessary, and it performs complicated control such as flap origin position confirmation control necessary for flap opening control by a stepping motor of the driving device etc. It is possible to provide a refrigerator that can be reduced, can improve energy saving performance with simple specifications, and can perform cooling with high reliability.

  In addition, it has energy-saving operation conditions and normal operation conditions, and flap opening control is performed during energy-saving operation conditions, and flap opening / closing control is performed under normal operation conditions. It is possible to provide a refrigerator capable of performing flap opening control of a damper and capable of cooling with high energy saving and high reliability with a simple specification.

<2-2. Damper flap opening control>
37 and 38 are flowcharts showing details of damper opening degree control (S-5 in FIG. 36) of the refrigerator cooling system of the present embodiment.

  First, the temperature of the refrigerator compartment temperature sensor (PCC) 59 is measured every minute for N minutes (for example, 10 minutes) (S-9). Thereafter, the measurement results for N minutes (for example, 10 minutes) are averaged (S-10). Then, the measured average temperature is compared with the set value of the refrigerator compartment temperature sensor (PCC) 59 (S-11), and the temperature difference ΔT between the average temperature for N minutes and the set value of the refrigerator compartment temperature sensor (PCC) 59 is compared. Is calculated (S-12). And the opening degree (angle) of the flap of the refrigerator compartment damper (PC damper) 37 is changed by the value of temperature difference (DELTA) T (S-13).

  More specifically, as shown in FIG. 38, the set value (target temperature), upper limit value, and lower limit value of the refrigerator compartment temperature sensor (PCC) 59 are confirmed (S-14). The upper limit value and the lower limit value are values of an upper limit and a lower limit of a range in which a set value (target temperature) is given a range. Next, the average temperature of the refrigerator temperature sensor (PCC) 59 for the latest several minutes (for example, 10 minutes every minute) is confirmed (S-15).

  Next, the set value (target temperature) of the refrigerating room temperature sensor (PCC) 59 is compared with the average temperature of the latest several minutes (for example, 10 minutes every minute), and the temperature difference (ΔT) is confirmed ( S-16). When the temperature difference (ΔT) is large and the average value is lower than the lower limit value of the set value (target temperature), the opening degree (angle) of the flap of the refrigerator compartment damper (PC damper) 37 is set to a predetermined angle (of the driving device). Step number of stepping motor or the like) is reduced (S-17).

  In S-16, if the average value is between the upper limit value and the lower limit value of the set value (target temperature), the flap opening degree (angle) of the refrigerator compartment damper (PC damper) 37 is not changed (S-). 18). In S-16, when the temperature difference (ΔT) is large and the average value is higher than the upper limit value of the set value (target temperature), the flap opening degree (angle) of the refrigerator compartment damper (PC damper) 37 is predetermined. The angle (number of steps of the stepping motor or the like of the driving device) is increased (S-19).

  Then, it returns to S-15 and repeats the said control for every predetermined time (for example, every 10 minutes). That is, the average temperature of the cold room temperature sensor (PCC) 59 before a predetermined time (for example, 10 minutes every minute) is compared with a set value (target temperature), and the temperature difference ΔT is set according to the value (level). The flap opening degree (angle) of the subsequent refrigerator compartment damper (PC damper) 37 is controlled.

  As described above, the refrigerator according to the present embodiment includes the refrigerating chamber 14, the cooling chamber 23 in which the cooler 24 that supplies cold air to the refrigerating chamber 14, and the blower (cooling fan 25) are housed, and the cooling chamber 23. A cold room damper (PC damper) 37 for controlling the cold air supplied from the inside to the cold room 14 in the duct, and a cold room temperature sensor (PCC) 59 for detecting the temperature in the cold room 14. The (PC damper) 37 has a flap and a driving device. The flap operation by the driving device is performed by flap opening control for controlling the opening of the flap, and the refrigerator compartment damper (PC damper) 37 is operated by the flap operation. Based on the average temperature of the refrigerator compartment temperature sensor (PCC) 59 during the previous predetermined time and the refrigerator compartment target temperature, the flap opening angle is controlled by changing the flap angle by the driving device. To reduce the temperature variation of the refrigerating compartment 14 can be brought close to the storage chamber target temperature, it is possible to provide a refrigerator easy to use with increased energy efficiency.

  In addition, it has energy-saving operation conditions, and flap opening control is performed under energy-saving operation conditions. The flap opening control of each damper can be performed only when energy-saving operation is required. In addition, a refrigerator capable of highly reliable cooling can be provided.

  In the present embodiment, the refrigeration room damper (PC damper) for controlling the cold air supply to the refrigeration room has been described. However, the present invention is similarly applied to a freezer room damper (FC damper) for controlling the cold air supply to the freezer room. be able to. Furthermore, the present invention can also be applied to a switching chamber damper (SC damper) that controls the cold air supply to the switching chamber and a vegetable room damper (VC damper) that controls the cold air supply to the vegetable chamber.

<2-3. Off-cycle control>
FIG. 39 is a flowchart showing off-cycle control of the refrigerator cooling system of the present embodiment, and FIG. 40 is a timing chart showing off-cycle control of the refrigerator cooling system of the present embodiment.

  In FIG. 39, when an ON signal is output to the compressor (comp) 27 (S-20), the compressor (comp) 27 and the cooling fan (FC fan) 25 are operated, and at the same time, the freezer compartment damper (FC damper). ) 68 is opened (S-26), and the cold air generated by the cooler 24 is supplied to the freezer compartment 18 so that the freezer compartment 18 is cooled and refrigerated in the cold air duct to the refrigerator compartment 14. Cold air is supplied to the room damper (PC damper) 37.

  Then, the refrigerator compartment 14 determines whether the refrigerator compartment temperature sensor (PCC) 59 is equal to or higher than the OFF temperature (S-21). If it is lower than the OFF temperature, the refrigerator compartment damper (PC damper) 37 is closed (S-). 25). If the cold room temperature sensor (PCC) 59 is not less than the OFF temperature in S-21, the cold room damper (PC damper) 37 is opened (S-22), and then the cold room temperature sensor (PCC) 59 is turned off. It is determined whether the temperature is reached (S-23).

If the cold room temperature sensor (PCC) 59 reaches the OFF temperature, the cold room damper (PC damper) 37 is closed (S-25), but before the cold room temperature sensor (PCC) 59 reaches the OFF temperature, When the freezer temperature sensor (FCC) 92 reaches the OFF temperature and an OFF signal is output to the compressor (comp) 27 (S-24), the compressor (comp) 27 is stopped. In a state where the compressor (comp) 27 is stopped before the sensor (PCC) 59 reaches the OFF temperature, it is determined whether or not the refrigerator temperature sensor (PCC) 59 is equal to or higher than a predetermined temperature (Poff) (S-27).

  If the cold room temperature sensor (PCC) 59 is lower than the predetermined temperature (Poff) in S-27, the cold room damper (PC damper) 37 is closed (S-29), but the cold room temperature sensor (PCC) 59 is closed. When the temperature is equal to or higher than a predetermined temperature (Poff), the refrigerating room damper (PC damper) 37 is opened, and the cooling fan (FC fan) 25 is operated at a lower speed than the rotation speed when the compressor (comp) 27 is ON. Cooling control is performed (S-28). The off-cycle cooling control (S-28) is performed until an initial predetermined time (Tpc) immediately after the compressor (comp) 27 receives the OFF signal or until the refrigerator temperature sensor (PCC) 59 reaches the OFF temperature. Thereafter, the refrigerator compartment damper (PC damper) 37 is closed (S-29).

  Referring to the timing chart of FIG. 40, when the compressor (comp) 27 is turned on, the cooling fan (FC fan) 25 is turned on, and the freezer compartment damper (FC damper) 68 and the refrigerator compartment damper (PC damper) 37 are opened. Next (point e), the refrigerator compartment damper (PC damper) 37 performs opening / closing control according to the temperature of the refrigerator compartment temperature sensor (PCC) 59 while the compressor (comp) 27 is ON. When the compressor (comp) 27 is turned off, the cooling fan (FC fan) 25 is also turned off, and the freezer compartment damper (FC damper) 68 is closed (point f). At this point (point f), if the refrigerator compartment damper (PC damper) 37 is open, the refrigerator compartment damper (PC damper) 37 is opened and the cooling fan (FC fan) 25 is connected to the compressor (compressor). ) Off-cycle cooling control is performed for a predetermined time at a speed lower than the rotational speed at 27 ON (points f to g). Thereafter, the cooling fan (FC fan) 25 is stopped and the refrigerator compartment damper (PC damper) 37 is closed (point g).

  Thereafter, similar control is performed. However, if the refrigerator compartment damper (PC damper) 37 is closed when the compressor (comp) 27 is turned off (point i), the above-described control (off-cycle cooling control) is performed. Does not.

  As described above, the refrigerator according to the present embodiment is arranged in the refrigerator compartment 14, the freezer compartment 18, and the freezer compartment 18, the cooler 24 that supplies cold air to the refrigerator compartment 14 and the refrigerator compartment 18, and cooling. A cooling chamber 23 in which the fan 25 is housed, a refrigerating chamber damper 37 that controls the cooling air supplied from the cooling chamber 23 to the refrigerating chamber 14 based on the refrigerating chamber temperature sensor 59, and a cooling chamber 23 that supplies the freezing chamber 18 And a compressor 27 whose operation is controlled based on the freezer temperature sensor 92, the refrigerator compartment damper 37 is opened, and freezing is performed. When the compressor 27 is stopped with the chamber damper 68 open, the cooling fan 25 is operated by closing the freezer damper 68 and opening the refrigerator compartment damper 37 for a predetermined time after the compressor stops. Cold during stop The cold of the vessel 24 can be effectively utilized, the refrigerating compartment 14 by suppressing the thermal influence on the freezing chamber 18 can efficiently cooled, it is possible to provide a highly energy-saving refrigerator.

  Further, the predetermined time after the compressor 27 is stopped is the time until the refrigerator temperature sensor 59 reaches a temperature at which the refrigerator compartment damper 37 is closed, and the cooler 24 is stopped while the compressor 27 is stopped. It can be effectively used properly.

Further, for a predetermined time after the compressor 27 is stopped, the rotational speed of the cooling fan 25 that operates with the freezer compartment damper 68 closed and the refrigerator compartment damper 37 opened is made smaller than the rotational speed during compressor operation. Further, it is possible to further effectively use the cold heat of the cooler 24 while the compressor is stopped, to efficiently cool the refrigerator compartment 14 while suppressing the heat effect on the freezer compartment 18, and to provide a highly energy-saving refrigerator.
In the present embodiment, the refrigerator compartment damper (PC damper) 37 is controlled to be opened and closed. However, the flap opening degree (angle) may be controlled. In this case, the temperature fluctuation in the refrigerator compartment can be reduced to approach the storage room target temperature, and energy saving can be further improved.

<2-4. Defrost control>
FIG. 41 is a flowchart showing the defrost control of the refrigerator cooling system of the present embodiment, and FIG. 42 is a timing chart showing the defrost control of the refrigerator cooling system of the present embodiment.

  In FIG. 41, when a defrost signal is input (S-31), the compressor 27 performs a continuous operation (precool control) for a predetermined time. Then, it is determined whether the cooler temperature sensor (DFC) is equal to or lower than the T2 temperature (S-32). If the temperature is equal to or lower than the T2 temperature, the refrigerator compartment damper 37 is opened, the freezer compartment damper 68 is closed, and the cooling fan (FC fan) 25 is turned on. Turns on (S-33). The process is continued until the cooler temperature sensor (DFC) rises to the T2 temperature (S-34). When the cooler temperature sensor (DFC) reaches the T2 temperature in S-34, the refrigerator compartment damper 37 is closed, the freezer compartment damper 68 is opened, the cooling fan (FC fan) 25 is turned off (S-35), and defrosting is performed. The means (defrost heater) 26 is turned on (S-36). The freezer compartment damper 68 is open while the defrosting means (defrost heater) 26 is ON. If the cooler temperature sensor (DFC) is equal to or higher than the T2 temperature in S-32, the steps S-33 and S-34 are not performed, and the process proceeds to the step S-35.

  It is determined whether or not the cooler temperature sensor (DFC) is equal to or higher than the T4 temperature (S-37). When the temperature is equal to or higher than the T4 temperature, the defrosting means (defrost heater) 26 is turned off and start-up control is performed (S-38). After the start-up waiting time has elapsed, the compressor 27 is started to operate by a compressor ON signal (S-39), and the FC fan 25 is controlled to be turned on after the cooling fan (FC fan) 25 is turned off for a predetermined time. When (DFC) becomes lower than the freezer temperature sensor (FCC), the freezer damper 68 is opened (S-40). Thereafter, a normal cooling operation is performed (S-41).

  Referring to the timing chart of FIG. 42, when a defrost signal is input during normal cooling operation (points k to l), precool control is performed in which the compressor 27 and the cooling fan (FC fan) 25 continuously operate for a predetermined time (l to m points). During the precool control, the refrigerator compartment damper 37 is closed and the freezer compartment damper 68 is opened to preferentially cool the freezer compartment 18. After completion of the precool control, the compressor is stopped, but the refrigerator temperature damper (37) is increased until the cooler temperature sensor (DFC) rises to the T2 temperature for effective use of the cooler 24 and the preliminary defrosting of the cooler. Is opened, the freezer compartment damper 68 is closed, and the refrigerating room pre-cooling & pre-defrosting control for operating the cooling fan (FC fan) 25 is performed (mn). Then, the defrosting means 26 is energized to melt the frost stacked on the cooler 24 with the heat of the defrost heater (no). During the defrosting, the refrigerator compartment damper 37 is closed and the freezer compartment damper 68 is opened.

When the cooler temperature sensor (DFC) reaches the T4 temperature or higher, the defrosting means (defrost heater) 26 is turned off, and activation waiting control is performed (op). During start-up waiting control, the refrigerator compartment damper 37 is opened and the freezer compartment damper 68 is opened. Thereafter, the compressor 27 is started. At that time, fan delay control is performed to turn off the cooling fan (FC fan) 25 for a predetermined time (points p to q). During the fan delay control, the refrigerator compartment damper 37 is opened and the freezer compartment damper 68 is closed. Then, the cooling fan (FC fan) 25 is turned on after the fan delay control, but the freezer compartment damper 68 is kept closed until the cooler temperature sensor (DFC) becomes lower than the freezer temperature sensor (FCC). Damper delay control is performed (q to r points). Thereafter, when the cooler temperature sensor (DFC) becomes lower than the freezer temperature sensor (FCC), the freezer damper 68 is opened, and then normal cooling operation is performed (r to point).

  As described above, the refrigerator according to the present embodiment is provided in the refrigerator compartment 14, the freezer compartment 18, the rear of the refrigerator compartment 18, and the cooler 24 cooling fan that supplies cold air to the refrigerator compartment 14 and the refrigerator compartment 18. 25, a cooling room damper 37 that controls the cooling air supplied from the cooling room 23 to the refrigerating room 14 based on the refrigerating room temperature sensor 59, and the cooling room 23 that is supplied to the freezing room 18. A freezer damper 68 for controlling the cool air based on the freezer temperature sensor 92, a compressor 27 whose operation is controlled based on the freezer temperature sensor 92, and a defrosting means (defrosting heater) for melting frost in the cooler 24. 26), and before the defrosting means 26 is energized, the precool mode in which the refrigerator compartment damper 37 is closed, the freezer compartment damper 68 is opened, and the cooling fan 25 and the compressor 27 are continuously operated for a predetermined time, and the precool mode In addition, the compressor 27 is stopped, the refrigerator compartment damper 37 is opened, the freezer compartment damper 68 is closed, and the cooling fan 25 is operated for a predetermined time, which is performed before the start of the defrosting operation. The cool heat of the cooler 24 after the end of the precool operation can be effectively used for cooling the refrigerator compartment 14, and a refrigerator with high energy saving can be provided.

  When the defrosting means 26 for melting the frost in the cooler 24 is energized, the refrigerator compartment damper 37 is closed and the freezer compartment damper 68 is opened. By introducing cold air from the freezer compartment 18 by natural convection, defrosting is performed. Ascending airflow around the cooler when the means (defrosting heater) 26 is energized can be promoted, and a refrigerator capable of improving the defrosting efficiency of the cooler 24 can be provided.

  The freezer damper 68 is provided in a freezer compartment cool air return passage through which the cool air supplied to the freezer compartment 18 is returned to the cooler chamber 23, and the cooler 24 is used while effectively utilizing the space of the cooler chamber 23. The defrosting efficiency can be increased.

  The cooling fan (FC fan) 25 is turned ON after the fan delay control, but the freezer damper 68 is kept closed until the cooler temperature sensor (DFC) becomes lower than the freezer temperature sensor (FCC). Since the damper delay control is performed, until the cooler 24 is sufficiently cooled, the cool air is not supplied to the freezer compartment 18 but can be supplied to the refrigerating compartment 14 side, preventing the temperature rise of the freezer compartment 18 and the refrigerator compartment. 14 efficient cooling.

  Further, since the freezer damper 68 is opened when the cooler temperature sensor (DFC) becomes lower than the freezer temperature sensor (FCC), the cold air sufficiently cooled by the cooler 24 is supplied to the freezer 18. Therefore, it is possible to reliably prevent the temperature increase in the freezer compartment 18.

  It should be noted that the refrigerator compartment pre-cooling & pre-defrost control for operating the cooling fan (FC fan) 25 with the refrigerator compartment damper 37 open and the refrigerator compartment damper 68 closed until the cooler temperature sensor (DFC) rises to the T2 temperature. The rotational speed of the cooling fan (FC fan) 25 inside may be larger than the rotational speed when the compressor 27 is ON. In this case, the refrigerating room pre-cooling & pre-defrosting control time can be shortened, the cooler 24 can be efficiently used, and the overall defrosting time can be shortened. The rise can be suppressed.

  In addition, the refrigerator compartment damper 37 and / or the freezer compartment damper 68 at the start of any mode of start waiting control after completion of defrosting, fan delay control, FC damper delay control, or at the start of each mode. It is desirable to perform open / close control that forcibly opens the flaps fully and reciprocates once before and after. Thereby, the moisture adhering to the vicinity of the flap of each damper after defrosting can be removed, the malfunction of each damper due to moisture icing can be suppressed, and the reliability of the refrigerator can be improved.

<2-5. Temperature and humidity control in vegetable room>
FIG. 43 is a flowchart showing the control of the vegetable room heater by the humidity sensor in the vegetable room of the refrigerator of the present embodiment, and FIG. 44 is the outside temperature and the energization rate of the vegetable room heater by the humidity sensor of the vegetable room of the refrigerator of the present embodiment. It is a graph which shows the relationship.

  In FIG. 43, the humidity in the vegetable compartment is measured by the vegetable compartment humidity sensor 78 (S-51). It is determined whether the humidity in the vegetable compartment is H1 or less (S-52), and if it is H1 or less, the vegetable compartment heater 79 is energized and controlled at an energization rate K (S-53). Then, energization control is performed at an energization rate K for a predetermined time (T4) (S-54). If the humidity in the vegetable room is H1 or higher in S-52, it is further determined whether it is H2 or higher (S-55). If it is H2 or more, the vegetable room heater 79 is energized at the energization rate L (S-56). Then, energization control is performed at an energization rate L for a predetermined time (T4) (S-57). If the humidity in the vegetable compartment is equal to or lower than H2 in S-55 (that is, the humidity in the vegetable compartment is between H1 and H2), the vegetable compartment heater 79 is energized and controlled at the energization rate M (S-58). Then, energization control is performed at an energization rate M for a predetermined time (T4) (S-59).

  Specifically, as shown in FIG. 44, the energization rate of the vegetable room heater 79 by the vegetable room humidity sensor 78 is determined for each outside air temperature. For example, when the humidity is high (85% or more) The energization rate of the vegetable room heater 79 is set higher than 20 to 85%, and the energization rate of the vegetable room heater 79 is made lower during low humidity (20% or less) than during medium humidity (20 to 85%).

  Thereby, it becomes possible to control the energization rate of the vegetable room heater according to the humidity in the vegetable room vegetable room, and with a simple structure, it is possible to prevent condensation in the vegetable room 17 while keeping the inside of the vegetable room 17 highly humid. it can. And in the conventional refrigerator without the vegetable room humidity sensor, the energization rate of the vegetable room heater is determined based on the medium humidity condition from the balance of reliability against condensation and energy saving, but in this embodiment, the vegetable room humidity sensor Appropriate energization control of the vegetable room heater 79 is possible according to the detection result of 78, the reliability against condensation and energy saving can be balanced at a high level, and both energy saving and freshness of the vegetable room can be achieved. it can.

  As described above, the refrigerator according to the present embodiment is disposed at the rear of the refrigerator compartment 14, the freezer compartment 18, the vegetable compartment 17, and the freezer compartment 18, and cools the refrigerator compartment 14, the freezer compartment 18, and the vegetable compartment 17. A cooling chamber 23 in which a cooler 24 and a cooling fan 25 to be supplied are housed, a refrigerating chamber damper 37 for controlling the cool air supplied from the cooling chamber 23 to the refrigerating chamber 14, and the vegetable compartment 17 from the cooling chamber 23 are supplied. A vegetable room damper 75 for controlling the cold air, a vegetable room humidity sensor 78 for detecting the humidity in the vegetable room, and a vegetable room heater 79 for heating the vegetable room 17, and vegetables based on the detected temperature in the vegetable room The room damper 75 is controlled to open and close, and the vegetable room heater 79 is energized and controlled based on the humidity detected by the vegetable room humidity sensor 78, and the energization rate of the vegetable room heater 79 can be controlled in accordance with the humidity in the vegetable room. And simple In concrete, it is possible to provide a refrigerator that it is possible to prevent the condensation of vegetable room while maintaining the vegetable room in high humidity.

  Moreover, the vegetable room humidity sensor 78 is arrange | positioned at the top | upper surface part of the vegetable room 17, and can detect the humidity in a vegetable room accurately.

  Further, the vegetable room heater 79 is disposed on a partition wall with the storage room above the vegetable room 17, and can reliably prevent condensation on the top surface that is particularly likely to condense in the vegetable room.

<2-6. Storage amount detection control of refrigerator compartment>
FIG. 45 is a flowchart showing cooling system control performed based on the detection result of the storage amount in the refrigerator in the refrigerator of the present embodiment.

In the figure, when the door switch detects that the door 7 (PC door) of the refrigerator compartment 14 is closed (S-
61) The LED, which is the illumination in the refrigerator compartment 14, is irradiated, the illuminance is detected by the refrigerator compartment optical sensor 97, and the previous illuminance (converted voltage value) stored in the memory and the current illuminance (converted) The difference from the voltage value is determined (S-62). Then, the previous illuminance (converted voltage value) and the current illuminance (converted voltage value) are compared to calculate the amount of change in the storage amount in the refrigerator compartment 14 (S-62). Then, when the increase amount of the storage amount exceeds a predetermined threshold, control for canceling the energy saving operation is performed. On the other hand, when the increase amount of the storage amount does not exceed the predetermined threshold, the energy saving operation is continued.

  Then, it is determined whether the door 7 of the refrigerator compartment 14 is opened within a predetermined time (for example, 30 minutes) after the door switch detects that the door 7 (PC door) of the refrigerator compartment 14 is closed (S-63). If the door 7 is opened, the process returns to S-61. If the door 7 is not opened for a predetermined time (e.g., 30 minutes) in S-63, the LED (illumination) in the refrigerator compartment 14 is irradiated and the illuminance (converted voltage value) of the refrigerator compartment light sensor held in advance. ) And the stored data in the refrigerator compartment, the absolute storage quantity in the refrigerator compartment 14 is calculated (S-64).

  Then, when the absolute storage amount is larger than S2, the mode P when the storage amount is large is selected (S-67), the fan voltage and the temperature control setting of each chamber are changed, and the compressor speed increase control is suppressed. (S-70). On the other hand, if the absolute storage amount is S2 or less in S-65, it is determined whether the absolute storage amount is between S1 and S2 (S-66). If the absolute storage amount is between S1 and S2, the mode Q when the storage amount is medium is selected (S-68), and the compressor speed increase control is suppressed (S-71). Further, when the absolute storage amount is smaller than S1, the mode R when the storage amount is small is selected (S-69), and the compressor speed increase control is suppressed (S-72).

  Note that the control change in the modes P, Q, and R is not immediately after the determination of S-65 and S-66, but the compressor is temporarily turned OFF, and each of the nodes P and P when the next compressor 27 is turned ON. The control of Q and R is changed.

  As described above, the refrigerator according to the present embodiment includes the LED illumination 80 and the refrigerator compartment light sensor 81 in the refrigerator compartment, and the LED illumination 80 and the refrigerator compartment light sensor 81 detect the previous and present times in the refrigerator compartment after the closing of the door is detected. When the door is not opened for a predetermined time after the door is detected, the LED lighting 80 and the refrigerator light sensor 81 detect the absolute storage amount in the refrigerator compartment. Therefore, it is possible to provide an easy-to-use refrigerator that can perform appropriate cooling control in accordance with the amount of storage.

  Further, based on the storage change amount between the previous time and the current time in the refrigerator compartment detected by the LED lighting 80 and the refrigerator compartment light sensor 81, it is determined whether to continue or cancel the energy saving operation, and the operation is controlled. Appropriate cooling control that takes into account how to use is possible.

  Moreover, based on the absolute storage amount in the refrigerator compartment detected by the LED lighting 80 and the refrigerator compartment light sensor 81, the rotation speed up-shifting operation of the compressor is controlled, and according to the absolute storage amount in the refrigerator compartment. The number of rotations of the compressor 27 can be selected, and more appropriate cooling control according to the storage amount in the storage chamber can be performed.

Further, in the present embodiment, when the door 7 of the refrigerator compartment 14 is not opened within a predetermined time (for example, 30 minutes) after the door switch detects that the door 7 (PC door) of the refrigerator compartment 14 is closed, The LED, which is the illumination in the refrigerator compartment 14, is irradiated, and the absolute storage amount in the refrigerator compartment 14 is calculated from the correlation data between the illuminance (converted voltage value) of the cold compartment optical sensor 81 and the storage amount in the refrigerator compartment. Therefore, even if dew condensation or clouding occurs in the vicinity of the LED or the refrigeration room light sensor 81 that is temporarily illuminated in the refrigeration room 14 due to the intrusion of outside air by opening and closing the door 7 of the refrigeration room 14, a predetermined time (for example, 30 Min) Since the closed state is ensured, disturbances such as condensation and cloudiness can be eliminated, and the absolute storage amount in the refrigerator compartment 14 can be calculated with high accuracy.

  The control change in the modes P, Q, and R is not immediately after the determination of S-65 and S-66, but the compressor is temporarily turned off, and each of the nodes P, By changing the control of Q and R, more stable cooling control can be performed.

  The present invention relates to a refrigerator provided with a damper for controlling the amount of cold air to each storage room, when the compressor is stopped when the refrigerator compartment damper is open and the freezer damper is open, for a predetermined time after the compressor is stopped. The blower is operated with the damper closed and the refrigerating room damper opened, and can be applied to refrigerators of various types and sizes such as home use and business use.

DESCRIPTION OF SYMBOLS 1 Refrigerator main body 2 Outer box 3 Inner box 4 Foam insulation material 5, 6 Partition plate 7, 8, 9, 10, 11 Door 14 Refrigeration room 15 Switching room 16 Ice making room 17 Vegetable room 17a Vegetable room container 18 Freezing room 20 Shelf board 21 Partial room (low temperature room)
22 Chilled room (low temperature room)
22a Cold air inlet 23 Cooling chamber 23a Bottom 24 Cooler 25 Cooling fan 26 Defrosting means (glass tube heater, defrost heater, defrost heater)
26a heater section 27 compressor 28 refrigerator compartment duct 28a duct member 28b duct cover 28bb mounting section 28c extension rib 28d side outlet 29 freezer compartment duct 30 vegetable compartment duct 31 cooling compartment forming plate 32 freezer compartment rear plate 33 first cold air supply Port 34 Second cold air supply port 35 Heater cover 36 Drain port 37 Refrigeration room damper 38 Damper fixing frame 39 Refrigeration room damper part 40 Partial room damper part 41 Refrigeration damper drive motor unit 43 Ceiling plate 44 Chilled room container 45 Cold air return Mouth (chilled side)
46 Cool air return passage (chilled side)
47 Chilled chamber door / grip 48 Opening 49 Temperature control heater 50 Ceiling plate member 51 Partial chamber door 52 Partial chamber container 53 Thermal insulation material 54 Partial cold air passage 55 Cold air return port (partial side)
56 Cold air return passage (partial side)
57 Cold air confluence return port 58 Refrigerating chamber return ducts 58a, 58b Recessed groove 59 Refrigerating chamber temperature sensor 60 Partial chamber temperature sensor 61 Deodorizing unit 62 Freezer chamber vessel 62a Lower vessel 62b Upper vessel 63 Cold air outlet 64 Freezing cold air return port 65 Freezer chamber Side opening frame portion 66 Cooling chamber side opening frame portion 66a Lower side 66b Gap portion 67 Grill 68 Freezer compartment damper 69 Grill piece 70 Damper frame body 71 Flap 72 Freezing damper drive motor unit 73 Claw piece 74 Opening 75 Vegetable room damper 75a Damper piece 76 Vegetable damper drive motor unit 77 Heat shield plate 78 Vegetable room humidity sensor 79 Vegetable room heater (VC heater)
80 LED lighting 81 Light sensor in refrigerator compartment 90 Microcomputer 91 Outside temperature sensor (ATC)
92 Freezer temperature sensor (FCC)
93 Vegetable room temperature sensor (VCC)
94 Cooler temperature sensor (DFC)
95 Door open / close detection means (door switch)
96 External illuminance sensor 97 Refrigeration room light sensor 98 Partial room damper (PF damper)

Claims (3)

A refrigerating room, a freezing room, a cooling room disposed behind the freezing room, for supplying a cooler for supplying cold air to the refrigerating room and the freezing room, and a blower; and from the cooling room to the refrigerating room A refrigeration room damper that controls the supplied cold air based on a refrigeration room temperature sensor, a freezer room damper that controls the cold air supplied from the cooling room to the freezer room, based on a freezer temperature sensor, and the freezer temperature. A compressor whose operation is controlled based on a sensor, and when the compressor is stopped in the open state of the refrigerating chamber damper and in the open state of the freezer chamber damper, the freezing chamber for a predetermined time after the compressor stops A refrigerator that operates the blower by closing the damper and opening the refrigerator compartment damper. The refrigerator according to claim 1, wherein the predetermined time after the compressor is stopped is a temperature until the cold room temperature sensor reaches a temperature at which the cold room damper is closed. 3. The rotation speed of the blower that operates with the freezer compartment damper closed and the refrigerator compartment damper open for a predetermined time after the compressor is stopped is smaller than the rotation speed during the compressor operation. Refrigerator.

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