KR101092176B1 - Refrigerator - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator having a damper for controlling blowing to a food storage chamber, and an object thereof is to obtain a refrigerator having improved volumetric efficiency, energy saving and reliability.
A freezer temperature compartment and a refrigeration temperature compartment, each of which has a compartment formed in the refrigerator main body for storing food, a cooler for exchanging cold air for cooling the freezer temperature compartment and the refrigeration temperature compartment, a cooler accommodating chamber in which the cooler is installed, and the cooler And an internal fan for blowing the cold air heat-exchanged to the freezing temperature chamber and the refrigerating temperature chamber, wherein the freezing temperature chamber or the refrigerating temperature chamber is provided in front of the internal fan and has a plurality of outlets through which cold air is ejected. And a cold air duct for condensing cold air, wherein the cold air duct has an outlet opening for blowing cold air in communication with the refrigeration temperature chamber or the refrigeration temperature chamber located in front of the fan inside the refrigerator. The opening is provided with a damper for controlling the blowing.

Description

Refrigerator {REFRIGERATOR}

The present invention relates to a refrigerator.

The refrigerator is a vapor compression refrigerator that cools the refrigerating temperature chamber and the refrigerating temperature chamber by a cooler, and for example, there is one described in Patent Document 1 as a refrigerator provided with a damper for controlling air blowing.

The refrigerator described in Patent Literature 1 includes a refrigerating chamber at the top, a switching chamber that can be switched to an ice making chamber and a freezing temperature at the bottom thereof, a vegetable chamber at the bottom thereof, and a freezing chamber at the bottom thereof, and a pan in the back of the vegetable chamber, and a cooler below it. The refrigerator is a refrigerator, an ice-making room, a switching room, and a freezing chamber, respectively, and a parallel air path is provided from the cooler storage chamber, and a damper is provided in front of the cold air outlet of each air path to control the blowing air to each chamber. will be. In addition, the vegetable chamber has an air passage in series with the freezing chamber, and the blowing to the vegetable chamber is controlled by the refrigerator compartment damper. With the above structure, the refrigerator described in Patent Document 1 controls the blowing in each of the refrigerating chamber (vegetable chamber connected to the air passage in series with the refrigerating chamber and the refrigerating chamber) and the freezing chamber (ice-making chamber, switching room which can be switched to freezing temperature, freezing chamber). Although it is possible to provide each chamber damper in front of the blowing port of the air passage to each chamber (patent document 1 describes it as "providing adjacent to a cooler"), the space efficiency is improved.

[Patent Document 1] Japanese Patent Application Laid-Open No. 2002-31466

However, although the refrigerator described in patent document 1 is equipped with the damper which controls the blowing to each chamber in front of the cold air blower outlet of the air path from the cooler storage room to each chamber parallel to a food storage room (vegetable room) ) Is a food storage chamber (in series with the refrigerating chamber) which does not directly control the blowing, and does not include a damper. Thereby, it is possible to provide a damper inside the air path of each chamber with space efficiency, and the food storage chamber located in front of the fan inside a refrigerator also arises when a damper is arrange | positioned as a parallel air path from a cooler storage chamber. Consideration to peculiar problem is not made. For this reason, the food storage chamber located in front of the fan inside the refrigerator also has various problems such as deterioration of space efficiency, increase of cost, deterioration of energy saving reliability, and the like when the dampers are arranged as air paths parallel from the cooler storage chamber. Was occurring.

The present invention has been made in view of the above problems, and relates to a refrigerator having a damper for controlling air blowing to a food storage chamber, and an object thereof is to obtain a refrigerator having improved volumetric efficiency, energy saving and reliability.

In order to achieve the above object, the present invention is a compartment formed in the refrigerator main body and a refrigerator temperature compartment and a refrigeration temperature compartment for storing food, respectively, and a cooler in which cold air for cooling the freezing temperature compartment and the refrigeration temperature compartment is heat-exchanged, and A cooler accommodating chamber in which a cooler is installed, and an internal fan for blowing cold air heat-exchanged by the cooler to the freezing temperature chamber and the refrigerating temperature chamber, wherein the freezing temperature chamber or the refrigerating temperature chamber is located in front of the internal fan. And a plurality of outlets through which cold air is ejected, and a cold air duct for collecting cold air, wherein the cold air duct communicates with the freezing temperature chamber or the refrigerating temperature chamber located in front of the fan in the refrigerator. Having an outlet opening for blowing, and having a damper for controlling the blowing in said outlet opening And as a base. Thereby, space efficiency is good and it becomes a low cost refrigerator.

In addition, the number of the said outlet opening of the said cold air intensive duct is made into the summary rather than the number of the said blower outlet. Thereby, space efficiency is good and it becomes a low cost refrigerator.

The circumferential length of the outlet opening of the cold air intensive duct is shorter than the circumferential length of the jet port. As a result, a refrigerator having high reliability is obtained.

The peripheral length of the opening of the damper is shorter than the peripheral length of the jet port. As a result, a refrigerator having high reliability is obtained.

In addition, the area of the said exit opening of the said cold air intensive duct is larger than the opening area of the said damper. As a result, the variation in performance can be suppressed, resulting in a refrigerator having high reliability.

Moreover, it is a summary that the said airflow fan is provided above the said cooler, and the said exit opening of the said cold air intensive duct is formed above the said airflow fan. This results in a refrigerator having high energy saving.

Moreover, it is a summary that the said fan inside the inclination was inclined from the vertical surface to the said cooler storage chamber side. This results in a refrigerator having high energy saving.

Moreover, the summary is provided with the blowing port which blows out cold air above the said exit opening of the said cold air intensive duct. This results in a refrigerator having high energy saving.

Moreover, it is a summary that the said opening of the said damper was inclined from the vertical surface to the inside of a pan inside. This results in a refrigerator having high energy saving.

Moreover, it is a summary that the said refrigeration temperature chamber is provided in front of the said pan inside a refrigerator, and the said refrigeration temperature chamber is installed above the said refrigeration temperature chamber. This results in a refrigerator having high energy saving.

In addition, the refrigeration temperature chamber is provided in front of the fan in the refrigerator, and the refrigeration temperature chamber is installed above and below the refrigeration temperature chamber, respectively. This makes it easy to maintain each chamber at an appropriate temperature.

The damper may be disposed to be inclined in the longitudinal direction. As a result, a refrigerator having high reliability is obtained.

In addition, it is a summary that the damper is inclined at least 6 degrees from the horizontal plane. As a result, a refrigerator having high reliability is obtained.

The damper further includes an opening, a rotational shaft near one side of the opening, and an opening and closing plate interlocked with a rotational operation of the rotational shaft, and the opening and closing of the opening is controlled by an angular position around the rotational axis of the opening and closing plate. The summary is made. This results in a refrigerator having low cost and high reliability.

Moreover, it is a summary that arrange | positioned so that the said rotating shaft of the damper may become upper side. As a result, a refrigerator having high reliability is obtained.

In addition, the opening and closing plate of the damper is arranged to open to the cold air-intensive duct side. As a result, a refrigerator having high reliability is obtained.

In addition, the damper has an opening, a rotating shaft provided on one side of the opening, and an opening and closing plate interlocked with a rotation operation of the rotating shaft, and the opening and closing of the opening is controlled in accordance with a rotation angle around the rotating shaft of the opening and closing plate. The cooling air amount is controlled according to the rotation angle of the opening and closing plate. This makes it easy to maintain each chamber at an appropriate temperature.

In addition, it is a summary that the heater which thermally contacts with the said damper is arrange | positioned. As a result, a refrigerator having high reliability is obtained.

In addition, a freezer temperature compartment and a refrigeration temperature compartment defined in the refrigerator main body, a cooler for exchanging cold air for cooling the freezer temperature compartment and the refrigerating temperature compartment, a cooler accommodating chamber in which the cooler is installed, and cold air heat exchanged in the cooler A fan cover which blows air into the refrigeration temperature chamber and the refrigeration temperature chamber, a fan cover installed to cover the front of the fan, and having an opening communicating with the refrigeration temperature chamber or the refrigerating temperature chamber; A damper provided in the opening to control the air blowing, a blower port for blowing cold air into the freezing temperature chamber or the refrigerating temperature chamber located in front of the fan in the refrigerator, and installed to cover the front of the fan cover. It is characterized by including a duct for blowing cold air to the jet port.

In addition, a space in which the rising air flow in the defrost of the cooler flows is formed in a lower front of the cooler storage chamber.

In addition, a duct through which return cold air flows after being blown from the cooler storage chamber to the refrigerating temperature chamber is installed on the side of the cooler and behind the freezing temperature chamber, and a vacuum insulator is provided between the duct and the refrigerating temperature chamber. It is characterized by.

In addition, a storage compartment partitioned in the refrigerator main body, a cooler for exchanging air for cooling the storage compartment, a cooler chamber in which the cooler is installed, a blower for blowing air heat-exchanged in the cooler to the storage compartment, and an ejection area of the blower A cold air collecting duct having an opening for guiding the air blown by the blower installed in the storage compartment, wherein the cold air collecting duct is provided between a blower support member for supporting the blower and a cover member provided in front of the blower; The cover member is installed integrally with the wall surface of the cooler chamber.

The apparatus may further include a communication hole communicating with the cooler chamber provided in the lower part of the blower support member, and a heater provided in the cold air collecting duct, wherein the heater is extended into the cooler chamber from the communication hole.

According to the present invention, a refrigerator having a damper for controlling air blowing to a food storage chamber is provided, and a refrigerator having improved volumetric efficiency, energy saving and reliability can be obtained.

1 is a front external view of a refrigerator according to an embodiment of the present invention.
FIG. 2 is a sectional view taken along line XX in FIG. 1 showing the constitution of the refrigerator of the refrigerator according to the embodiment of the present invention. FIG.
3 is a front view showing a configuration inside a refrigerator of a refrigerator according to an embodiment of the present invention.
4 is an enlarged explanatory diagram of a main part of FIG. 2;
5 is an enlarged explanatory diagram of a main part of FIG. 3;
6 is a flowchart showing control of the refrigerator according to the embodiment of the present invention;
7 is a time chart showing control of the refrigerator according to the embodiment of the present invention;
8 is a front view showing a periphery structure of a fan in a refrigerator of an embodiment of the present invention.
9 is a longitudinal cross-sectional view showing a periphery structure of a fan in a refrigerator of an embodiment of the present invention.
The perspective view which shows the freezer compartment damper of the refrigerator which concerns on embodiment of this invention.
It is a figure explaining the damper installation location to the seal of the fan front of the inside of the conventional refrigerator.
It is a figure explaining the damper installation location other than the chamber of the inside of the fan inside of the refrigerator of the conventional refrigerator.
The exploded perspective view which looked at the structure around a pan inside of a refrigerator from the back side.

An embodiment of a refrigerator according to the present invention will be described with reference to FIGS. 1 to 13.

FIG. 1: is a front external view of the refrigerator 1 of this embodiment, FIG. 2 is a XX longitudinal cross-sectional view in FIG. 1 which shows the structure of the refrigerator 1, and FIG. It is a front view which shows the internal structure, Comprising: It is a figure which shows arrangement | positioning of a cold air duct, a blower outlet, etc. FIG. 4 is an explanatory drawing of the principal part of FIG. 5 is an enlarged explanatory diagram of a main part of FIG. 3.

As shown in FIG. 1, the refrigerator 1 of the present embodiment is a food storage room, which includes a refrigerator compartment 2, an ice making chamber 3, an upper freezer compartment 4, a lower freezer compartment 5, and a vegetable compartment from above. 6) is provided. In addition, in this specification, as a generic name of the ice-making chamber 3, the upper freezer compartment 4, and the lower freezer compartment 5, the refrigeration temperature compartment 60 as a general term of the refrigerating temperature chamber 60, the refrigerating chamber 2, and the vegetable chamber 6 ( 61) may be called.

The refrigerating compartment (2) is provided with two doors in the front side, divided into left and right refrigerating compartment doors (2a, 2b), the ice-making compartment (3), the upper freezer compartment (4), the lower freezer compartment (5), the vegetable compartment (6), respectively, The ice-making chamber door 3a, the upper freezer compartment door 4a, the lower freezer compartment door 5a, and the vegetable compartment door 6a are provided. Hereinafter, the refrigerator compartment doors 2a and 2b, the ice making chamber door 3a, the upper freezer door 4a, the lower freezer compartment door 5a, and the vegetable compartment door 6a are simply the doors 2a, 2b, 3a, 4a and 5a. 6a).

In addition, the refrigerator 1 is a door sensor (not shown) which detects the opening / closing state of each door of the doors 2a, 2b, 3a, 4a, 5a, and 6a, respectively, and the state determined as the door opening state is a predetermined time, for example. For example, when it continues for more than 1 minute, the not-shown alarm which notifies a user, the temperature setter which sets the temperature of the refrigerating chamber 2 or the vegetable compartment 6, or the temperature setting of the freezing temperature chamber 60, etc. Equipped with.

As shown in FIG. 2, the outside and inside of the refrigerator 1 are partitioned by the heat insulation box 10 formed by filling a foam heat insulating material (foamed polyurethane). The heat insulating box 10 of the refrigerator 1 mounts the vacuum heat insulating material 25.

The inside of the chamber is divided into a refrigerator compartment 2, an upper freezer compartment 4 and an ice making chamber 3 (refer to Fig. 1, not shown in Fig. 2, the ice making chamber 3 is not shown) by an adiabatic partition wall 28, The lower freezer compartment 5 and the vegetable compartment 6 are partitioned by the heat insulation partition wall 29.

A plurality of door pockets 32 are provided on the inner side of the doors 2a and 2b (see FIG. 1). In addition, the refrigerating chamber 2 is partitioned into a plurality of storage spaces in the longitudinal direction by the plurality of shelves 36.

As shown in Fig. 2, the upper freezer compartment 4, the lower freezer compartment 5 and the vegetable compartment 6 are pulled out integrally with the doors 4a, 5a, 6a provided in front of each chamber. 4b, 5b, and 6b are provided, respectively, and the storage containers 4b, 5b and 6b can be taken out by grasping the handle part which is not shown in the door 4a, 5a, and 6a by hand, and pulling it out to the front side. Similarly to the ice-making chamber 3 shown in FIG. 1, the storage container (indicated by (3b) in FIG. 2) which is not shown in figure is integrally provided with the door 3a, and the handle part which is not shown in figure 3a is not shown. The storage container 3b can be taken out by holding it by hand and pulling it out to the front side. In addition, the upper freezer compartment 4 can be used as a quick freezer compartment. In order to improve the quick freezing performance, the storage container 4b of the upper freezing compartment 4 is provided with an aluminum tray (not shown), so that the freezing speed is improved.

As shown in FIG. 2 (appropriately see FIGS. 3 to 5), the cooler 7 is provided in the cooler storage chamber 8 provided in the substantially rear portion of the lower freezer compartment 5, The air (cold air, hereinafter, cold air cooled by the cooler 7 is called cold air) which has cooled by heat exchange with the cooler 7 by the in-vehicle fan 9 installed above is the refrigerator compartment duct 11 and the freezer compartment duct 12. ), It is sent to each chamber of the refrigerating chamber 2, the upper freezing chamber 4, the lower freezing chamber 5, the ice making chamber 3. Blowing into each chamber is controlled by opening and closing the refrigerating chamber damper 20 and the freezing chamber damper 50.

In addition, the refrigerator compartment duct 11 and the freezer compartment duct 12 are provided in the back side of each chamber of the refrigerator 1, as shown with the broken line in FIG.

Specifically, when the refrigerating chamber damper 20 is in an open state and the freezing chamber damper 50 is in a closed state, the cold air is sent to the refrigerating chamber 2 from the jet port 2c formed in multiple stages via the refrigerating chamber duct 11. After the cooling air of the refrigerating compartment 2 is finished, the cool air flows in from the refrigerating compartment return port 2d provided at the lower right side of the rear side of the refrigerating compartment 2, and through the refrigerating compartment-vegetation chamber communication duct 16, the rear of the vegetable compartment 6. It flows into the vegetable compartment 6 from the vegetable compartment spout 6c formed in the upper right side, and cools the vegetable compartment 6. The cold air which cooled the vegetable compartment 6 returns from the vegetable compartment return opening 6d formed in the lower front of the heat insulation partition wall 29 through the vegetable compartment return duct 18, and the vegetable compartment of the width substantially equal to the width of the cooler 7 It flows in from the blower outlet 18a (refer FIG. 3 or FIG. 5).

Although the freezer compartment damper 50 is omitted in FIG. 3, when the freezer compartment damper 50 is in an open state, the cold air heat-exchanged in the cooler 7 is boosted by the in-vehicle fan 9, and passes through the freezer compartment duct 12. The air is blown from the spouts 3c, 4c, and 5c to the ice making chamber 3, the upper freezing chamber 4, and the lower freezing chamber 5, respectively. In addition, as shown in FIG. 3, in the refrigerator 1 of this embodiment, seven ejection openings 3c-5c of the refrigerating temperature chamber 60 are provided in total, and the circumferential length of the ejection openings 3c-5c is provided. The sum total is 1200 mm.

As shown in FIG. 4, in the refrigerator 1 of the present embodiment, an in-vehicle fan 9 is provided above the cooler 7, and a freezer compartment damper 50 is provided above the in-vehicle fan 9. . In addition, the upper freezer compartment blower 4c and the ice making machine blower 3c (see FIG. 3) which discharge cold air to the upper freezer compartment 4 located at the upper end of the freezing temperature chamber 60 above the freezer compartment damper 50 are provided. It is provided. In addition, the upper freezer compartment jet port 4c has the largest opening area among the jet ports of the freezer compartment.

In addition, when the refrigerator 9 in the refrigerator 9 is operated with the refrigerator damper 20 open, the cold air is cooled in the refrigerator compartment 8 ⇒ cold intensive duct 13 (detailed later) ⇒ refrigerator ventilating duct 11 ⇒ Refrigerator room (2) ⇒ Refrigeration room-vegetable room communication duct (16) ⇒ vegetable room (6) ⇒ vegetable room return duct (18) ⇒ flows in order of cooler storage room (8). Among the wall surfaces forming the cold air circulation path, the wall surface partitioning the freezer compartment 60 and the cold air circulation path, that is, the front face of the cooler storage chamber 8, the bottom of the refrigerator compartment 2, and the cold room-vegetable chamber communication duct 16. The vacuum insulator 25 is disposed on at least one of the front face and the upper surface of the vegetable chamber return duct 18 (the vacuum insulator 25 on the front face of the refrigerator compartment-vegetable chamber communication duct 16 is not shown). In other words, a duct through which the return cold air flows after being blown from the cooler storage chamber 8 to the refrigerating temperature chamber 61 is provided on the side of the cooler 7 and behind the freezing temperature chamber 60, and at least this duct and The vacuum insulator 25 is provided between the refrigeration temperature zone chambers 60. In addition, the vacuum insulator 25 is formed by encapsulating glass wool or resin fiber as a core material in a film having a gas barrier property and vacuum welding the ends thereof, followed by thermal welding, whereby the thermal conductivity is 10 kPa / mK or less. Has performance.

As shown in FIG. 5, the cold air having cooled the refrigerator compartment 2 flows into the vegetable compartment 6 through the refrigerator compartment-vegetable compartment communication duct 16 provided on the side of the refrigerator compartment 8. The return cooling air from the vegetable chamber 6 flows in from the vegetable chamber return opening 6d (refer FIG. 2), and as shown in FIG. 4, through the vegetable chamber return duct 18 provided in the heat insulation partition wall 29, the cooler It flows into the cooler storage chamber 8 from the vegetable compartment return blower outlet 18a (refer FIG. 5) of the width dimension substantially equal to the width of the cooler 7 provided in the lower front of the storage chamber 8. On the other hand, the cold air which cooled the refrigeration temperature zone chamber 60 is equipped with the cooler provided in the lower part of the partition plate 54 which divides the cooler storage chamber 8 and the freezing temperature zone chamber 60, as shown in FIG. It enters into the cooler accommodating chamber 8 through a freezer compartment return port 17 having a width dimension approximately equal to the width of 7). The defrost heater 22 is provided below the cooler storage chamber 8. The defrost heater 22 is a glass tube heater, and the heat dissipation fin 22a made of aluminum is provided in the outer periphery of the glass tube.

An upper cover 53 is provided above the defrost heater 22 to prevent defrost water from dripping into the defrost heater 22. 5, the warm air storage space 26 is formed in the lower front of the cooler storage chamber 8. As shown in FIG. By this warm-up storage space 26, it is possible to suppress that the warm-up air (rising air flow) generated during the defrosting operation performed by energizing the defrost heater 22 flows into the freezing temperature chamber 60.

The frost attached to the wall of the cooler 7 and the surrounding cooler storage chamber 8 melts during defrosting operation, and the defrost water generated at that time flows into the tub 23 provided in the lower part of the cooler storage chamber 8. After it reaches the evaporating dish 21 arranged in the machine room 19 which is later through the drain pipe 27, the heat generation of the condenser and the compressor 24 which are not shown arrange | positioned in the compressor 24 and the machine room 19 is carried out. Is evaporated by

In addition, when viewed from the front of the cooler 7, the upper left cooler temperature sensor 35 installed in the cooler 7, the refrigerating chamber 2, the refrigerating chamber temperature sensor 33, the lower freezer 5, the freezing chamber temperature sensor 34 ), Respectively, the temperature of the cooler 7 (hereinafter referred to as the cooler temperature), the temperature of the refrigerating chamber 2 (hereinafter referred to as the refrigerating chamber temperature), and the temperature of the lower freezer compartment 5 (hereinafter, referred to as a freezer compartment temperature). Can be detected). In addition, the refrigerator 1 is provided with the outside air temperature sensor which is not shown in figure which detects the temperature outside. The vegetable chamber temperature sensor 33a is also arranged in the vegetable chamber 6.

In addition, in this embodiment, isobutane is used as a refrigerant | coolant, and refrigerant | coolant sealing amount is made into a small quantity about 80 g.

On the upper surface side of the ceiling wall of the refrigerator 1, a control board 31 mounted with a memory such as a CPU, a ROM, a RAM, an interface circuit, or the like is disposed (see FIG. 2), and the control board 31 is an outside air temperature sensor described above. The opening and closing states of the doors of the cooler temperature sensor 35, the refrigerator compartment temperature sensor 33, the vegetable compartment temperature sensor 33a, the freezer compartment temperature sensor 34, and the doors 2a, 2b, 3a, 4a, 5a, and 6a It is connected to the door sensor and the temperature setter (not shown) installed on the inner wall of the refrigerating chamber 2, respectively, to detect each other, and controls the compressor 24, such as turning on and off, and the refrigerating chamber damper by a program preloaded in the ROM. 20) control of respective actuators (not shown) for separately driving the freezer compartment damper 50, on / off control or rotational speed control of the in-vehicle fan 9, and on / off of an alarm for notifying the above door opening state. Control is performed.

Next, the detailed structure of the periphery fan 9 and the freezer compartment damper 50 of the refrigerator 1 of this embodiment is demonstrated, referring FIGS. 8-10 and 13.

FIG. 8 is a front view showing the structure of the refrigerator 9 of the refrigerator 1 of the present embodiment and the surroundings of the freezer compartment damper 50. FIG. 9 is a view of the refrigerator 9 of the refrigerator 1 of the present embodiment. It is a longitudinal cross-sectional view which looked at the structure around the freezer compartment damper 50 from the side. 10 is the perspective view of the freezer compartment damper 50 of the refrigerator 1 of this embodiment, and FIG. 13 is an exploded perspective view which looked at the periphery of the inside of the inside of the refrigerator fan 9 from the back side.

As for the freezer compartment damper 50 used by the refrigerator 1 of this embodiment, as shown in FIG. 10, the elongate frame 103 which was integrally molded, for example, made of resin provided with the opening 102 in one surface. ) And drive means 100 incorporating a drive system such as a motor, a reduction gear, or the like at one end (short section of rectangular shape) of frame 103. One surface of the opening and closing plate 104 is provided with a buffer member 104a molded of a flexible material such as foamed urethane or foamed polyethylene. The freezer compartment damper 50 is closed by the buffer member 104a being pressed against the inner surface (surface on the side opposite to the opening and closing plate) 103a near the opening 102 of the frame 103. Thus, its seal performance depends on the circumferential length 102a of the opening 102. Here, although the opening 102 is provided with the connection part 103b which the upper side and the lower side of the frame 103 connect, this is provided in order to suppress a deformation | transformation, and does not directly contribute to seal performance. Therefore, when considering the sealing performance of the freezer compartment damper 50, the circumferential length 102a of the opening 102 does not include the length of the connecting portion 103b that does not directly contribute to the sealing performance. In addition, the size of the opening 102 of the freezer compartment damper 50 used in the refrigerator 1 of this embodiment is 180 mm x 35 mm, and the perimeter length 102a which contributes to seal performance is 430 mm. The outer periphery of the opening 102 is provided with a rib 103c which serves as a position alignment when the freezer compartment damper 50 is installed and reinforcement of the opening 102.

As shown in FIG. 8, the inside fan 9 of the refrigerator 1 of this embodiment is a fan of the motor type in which the shape of the casing 9a is substantially square, and a motor is provided in the boss | hub part. A fan cover 70 is provided on the discharge side of the internal fan 9 to form a cold air intensive duct 13 that collects cold air. The fan cover 70 is provided so as to cover the front of the internal fan 9. The outer circumferential portion 13a of the cold air intensive duct 13 has a distance from the rotational center of the inner fan 9 to the outer circumferential portion 13a to be minimum from the position (minimum dimensional position shown in FIG. 8) in the inner fan rotation direction. Thus, the enlarged air passage 13b is formed so as to gradually expand from the upstream to the downstream. In addition, in the refrigerator 1 of this embodiment, the enlarged air path 13b of the cold air intensive duct 13 is 180 in the fan rotation direction from the position from which the distance from the internal fan rotation center to the air path outer peripheral wall becomes the minimum. I have over.

That is, the enlarged air path 13b has an angle larger than 180 degrees or 180 degrees from the start end (upstream) to the end part (downstream). In addition, the outlet opening 13c is horizontally long and the longitudinal direction of the outlet opening 13c is located at the end portion (downstream) of the enlarged air passage 13b. Moreover, the fan cover 70 has a recessed part in the position which opposes the inside fan 9, and the enlarged air path 13b is provided around the said recessed part. That is, when cold air flows and rectifies the enlarged air passage 13b, it flows smoothly through the outlet opening 13b, and flows into the upper freezer compartment 4 and the lower freezer compartment 5. Thereby, the cooling efficiency of the upper freezer compartment 4 and the lower freezer compartment 5 can be improved.

4, the freezer compartment duct 12 is provided so that the front of the fan cover 70 may be covered. That is, between the cooler storage chamber 8, the upper freezer compartment 4, and the lower freezer compartment 5, the cold air intensive duct 13 and the freezer compartment duct 12 are arrange | positioned. As a result, since the air insulation layer is formed at the rear of the storage space, the heat influence received by the upper freezer compartment 4 and the lower freezer compartment 5 from the cooler storage chamber 8 (for example, during the defrosting operation of the cooler 7). Influence by Temperature Rise, etc.] can be suppressed, and temperature change in the storage space can be suppressed.

In addition, as shown in FIG. 8, the in-vehicle fan 9 is arrange | positioned inclined by the angle (beta) 1 ((beta1 is 10 degrees in the refrigerator 1 of this embodiment) from a horizontal plane.

As illustrated in FIG. 9, the freezer compartment damper 50 is arranged so that the opening 102 faces substantially forward, but the arrangement position is the cold air illustrated in FIG. 8 for the rib 103c of the freezer compartment damper 50. The outlet opening 13c (the outlet opening 13c is larger than the opening 102 of the freezer compartment damper 50) of the intensive duct 13 is easily determined. 9, the freezer compartment damper 50 is arrange | positioned so that the rotating shaft 101 may become upper side. In addition, the opening and closing plate 104 of the freezer compartment damper 50 is opened to the rear side, and the opening angle θ varies depending on the operating state, and is in a state of 0 degrees (fully closed), 60 degrees, or 90 degrees (fully open). (Details of the relationship between the operating state and the opening angle will be described later).

As shown in FIG. 8, the freezer compartment damper 50 is installed inclined by an angle β2 ([beta] 2 is 6 degrees in the refrigerator 1 of the present embodiment) from the horizontal plane. In addition, as shown in FIG. 9, the in-vehicle fan 9 inclines backward by the angle (alpha) 1 ((alpha1 is 13 degrees in the refrigerator 1 of this embodiment), and the freezer compartment damper 50 is the angle (alpha) 2 (In the refrigerator 1 of the present embodiment, α2 is inclined backward by 6 degrees).

In addition, the size of the exit opening 13c of the cold air intensive duct 13 is 188.5 mm x 43 mm, and the circumferential length 13d is 463 mm.

The fan hold 71 is provided with a communication hole 75 through which the cold air intensive duct 13 communicates with the cooler storage chamber 8. In addition, the communication hole 75 is formed so that it may be located in the lower end part in the cold air intensive duct 13.

Moreover, the fan cover heater 76 is arrange | positioned in the area | region below the inside fan 9 in the cold air intensive duct 13 (fan cover inner surface). As shown in FIGS. 8 and 9, the fan cover heater 76 extends the portion 76a extended from the inside of the cold air intensive duct 13 into the cooler storage chamber 8 via the communication hole 75. Have

In addition, as shown in FIG. 13, the fan cover 70 is formed integrally with the partition plate 54. Moreover, the member (fan hold 71) holding the in-vehicle fan 9 is separate from the fan cover 70, and is assembled to the back side of the fan cover as shown in FIG.

Next, the control of the cooling operation of the refrigerator 1 of the present embodiment will be described with reference to FIG. 6. 6 is a control flowchart showing basic control of the refrigerator 1 of the present embodiment. Control is performed by the CPU of the control board 31 (refer FIG. 2) to execute the program stored in ROM.

The cooling operation of the refrigerator 1 of this embodiment consists of a freezer operation, a refrigerating chamber operation, a refrigeration freezing operation, a frost cooling operation, and an off. Freezer operation means refrigeration in the state of `` fan on, refrigerator damper closing, freezer damper opening (opening angle (θ) = 90 degrees (see Fig. 9 for definition of opening angle)] and compressor on (high rotation). The operation of cooling the temperature chamber 60, and the refrigerating chamber operation, is performed in the state of "the fan temperature inside, the refrigerator compartment damper opening, the freezer chamber damper closing (opening angle (theta) = 0 degree), and the compressor on (low rotation)"). The operation of cooling the refrigerating temperature chamber 61 and the refrigerating and freezing operation are `` a fan inside, a refrigerator damper opening, a freezer damper opening (opening angle θ = 60 degrees), and a compressor on (high rotation) ''). In the state of, it is the operation of cooling both the refrigerating temperature zone chamber 61 and the freezing temperature zone chamber 60. In addition, frost cooling operation is operation which cools the refrigerating temperature chamber 61 in the state of "a fan inside, a refrigerator damper opening, a freezer damper closing, a compressor off", and an off is also a blower and a compressor also stop. It is a state which does not cool.

As shown in FIG. 6, when the refrigerator 1 starts operation by turning on the power (start), each chamber of the refrigerator 1 is cooled, and the basic heat load is only the heat intrusion from the outside. After that, if the user opens or closes the door to increase the heat load, or if the high temperature and humidity environment changes to change the amount of heat intrusion, the constant operation pattern is repeated (stable cooling operation). In FIG. 6, the control process up to this stable cooling operation state is abbreviate | omitted. In addition, since the control based on the temperature of the vegetable chamber 6 is not performed at the time of the refrigeration operation | movement which the refrigerator 1 of this embodiment is stable, the description about the vegetable chamber 6 is abbreviate | omitted. 2) also includes a vegetable compartment (6).

A constant operation pattern (operation cycle) is repeated at the time of stable cooling operation, but it demonstrates from the state where freezer operation is performed here (step S101). The freezer operation is an operation for cooling the freezer temperature chamber 60 in a state of "indoor fan on, refrigerating chamber damper closing, freezing chamber damper opening, compressor on (high rotation)".

In the state where freezer operation is being performed, if opening / closing of the refrigerating compartment door 2a or 2b is detected by the refrigerating compartment door sensor which detects opening / closing of the refrigerating compartment door 2a or 2b (step S102), the flow proceeds to step S201. (Step S201 will be described later). If there is no opening / closing of the refrigerating compartment door 2a or 2b, the refrigerating compartment temperature continuously detected by the refrigerating compartment temperature sensor 33 is set in advance in the refrigerating compartment upper limit temperature TR_2 (in the refrigerator 1 of the present embodiment, TR_2 = 6 ° C.] is determined (step S103).

When the refrigerator compartment temperature is not set to the refrigerator compartment upper limit temperature (Tr_2) (No) [Refrigerator temperature> The control when the refrigerator compartment upper limit temperature (TR_2) is to be used (Example) will be described later] and detected by the freezer compartment temperature sensor 34. It is determined whether the freezer compartment temperature is lower than the preset freezer compartment lower limit temperature TF_1 (TF_1 = -21 ° C in the refrigerator 1 of the present embodiment) (step S104). In the case where the freezer compartment temperature <freezer compartment lower limit temperature TF_1 is not set (no), the flow returns to step S101 again.

In step S104, when the freezer compartment temperature <freezer compartment lower limit temperature TF_1 (YES), the refrigerator compartment temperature and the predetermined reference temperature TR_a (the refrigerator 1 of the present embodiment TR_a = 5) are subsequently set. ° C] and TR_b (TR_b = 4 ° C in the refrigerator 1 of the present embodiment), and based on the comparison result, the value of the reference temperature Tevp related to the detection temperature of the cooler temperature sensor 35 is determined. Choose. Specifically, if the refrigerator compartment temperature> TR_a, Tevp = Tevp_1 (in the refrigerator 1 of this embodiment, Tevp_1 = 3 ° C), and if TR_a≥ refrigerator compartment temperature> TR_b, Tevp = Tevp_2 [the refrigerator 1 of this embodiment) In this case, Tevp_2 = -10 deg. C and Te_v = Tevp_3 (Tevp_3 = -18 deg. C in the refrigerator 1 of the present embodiment) if TR_b> refrigerating chamber temperature (step S105).

Therefore, if the value of Tevp is high in the outside temperature and the refrigerator compartment temperature is likely to rise, Tevp_1 is selected. If the outside temperature is low and the refrigerator compartment temperature is difficult to rise, Tevp_3 is selected. Is selected. In addition, for example, food wastes are caught, and a slight gap is generated in the refrigerating compartment door 2a or 2b, thereby increasing the heat load normally. However, since the refrigerating compartment door sensor has a small clearance, the door is recognized as closed. There is a case where the alarm indicating the door opening state does not sound. In this case, even if the outside air temperature is relatively low, the temperature of the refrigerating chamber may easily increase, and Tevp_2 or Tevp_1 may be selected as the value of Tevp.

Then, frost cooling operation | movement is performed (step S106). The frost cooling operation refers to an operation in which the refrigerating temperature chamber 61 is cooled in a state of "the fan inside, the refrigerator compartment damper opening, the freezer compartment damper closing, and the compressor off". In the state where the frost cooling operation is performed, whether or not the refrigerator compartment temperature is lower than the refrigerator compartment lower limit temperature TR_1 (TR_1 = 1.5 ° C in the refrigerator 1 of the present embodiment) which is set in advance (step S107), and the cooler temperature is lower than the refrigerator compartment temperature. It is determined whether it is higher than the reference temperature Tevp set in step S105 (step S108), and does not satisfy the refrigerator compartment temperature <refrigerator compartment lower limit temperature TR_1 (No), and does not satisfy the cooler temperature> reference temperature Tevp. If not, it is determined whether the freezer compartment temperature is higher than the preset compressor on temperature TF_2 (TF_2 = -19 ° C in the refrigerator 1 of the present embodiment) (step S109), and the freezer compartment temperature> compressor. If the on temperature TF_2 is not satisfied (No), the process returns to step S107 again.

In step S109, when it is determined that the freezer compartment temperature> compressor on temperature TF_2 (YES), the compressor is turned on continuously and at low rotation [the compressor 1 at this time in the refrigerator 1 of this embodiment]. Is the refrigerator compartment operation | movement operated by 1200min ^-1 ] (step S110). That is to say, the refrigerating chamber operation is an operation for cooling the refrigerating temperature chamber 61 in a state of "indoor fan on, refrigerating chamber damper opening, freezing chamber damper closing, and compressor on (low rotation)".

In the state where the refrigerator compartment operation is being performed, it is determined whether the freezer compartment temperature is higher than the freezer compartment upper limit temperature TF_3 (TF_3 = -16 ° C in the refrigerator 1 of the present embodiment) which is set in advance (step S111). When it is determined that the temperature> freezer upper limit temperature TF_3 is not satisfied (no) [freezer temperature> the control when the freezer upper limit temperature TF_3 is satisfied (example) will be described later), and the refrigerator compartment temperature <refrigerator compartment lower limit temperature TR_1 The process proceeds to the determination of step S112. If the refrigerator compartment temperature <refrigerator compartment lower limit temperature TR_1 is not satisfied (NO), it returns to step S111 again.

In step S112, when the refrigerator compartment temperature <refrigerator compartment lower limit temperature TR_1 is satisfied (Yes), it becomes "freezer damper opening, the refrigerator compartment damper closing" (step S113), and the compressor 24 continues high rotation (this embodiment) In the refrigerator 1, the compressor rotational speed at this time becomes 1900 min ⁻¹ ], and the inside fan 9 is stopped (step S114). After the predetermined time (30 seconds in the refrigerator 1 of the present embodiment) has elapsed (step S115), the in-floor fan 9 is operated to start a freezer compartment operation (step S116). Since the freezer compartment operation of step S116 is the state of the freezer compartment operation demonstrated in step S101, the above is an operation cycle at the time of the stable cooling operation of the refrigerator 1 of this embodiment.

In general, in the refrigerator, if the door is opened or the food is stored at a relatively high temperature, the heat load is temporarily increased. Hereinafter, the control when the heat load of the refrigerator 1 of this embodiment temporarily increases is demonstrated.

In the refrigerator 1 of this embodiment, in step S102, the presence or absence of the opening / closing of the refrigerating compartment door 2a or 2b is determined, and when there is a door opening and closing of the refrigerating compartment door 2a or 2b, it follows to step S201. It is supposed to proceed. In step S201, the refrigerator compartment upper limit temperature TR_2 is replaced by TR_2 '(in the refrigerator 1 of the present embodiment, TR_2 = 6 ° C becomes TR_2' = 8 ° C). When the refrigerator compartment upper limit temperature TR_2 is overwritten by TR_2 ', the process returns to step S101. When returning to step S101, if the door is already closed (step S102 is determined to be no), then in step S103, determination of the refrigerating chamber temperature> refrigerating chamber upper limit temperature TR_2 is performed. Here, in step S201, since the refrigerator compartment upper limit temperature TR_2 is overwritten by TR_2 ', the refrigerator compartment upper limit temperature is high. Therefore, the refrigerator compartment temperature> refrigerator compartment upper limit temperature TR_2 in step S103 becomes difficult to be satisfied rather than the case where there is no door opening and closing of the refrigerator compartment 2. When the refrigerating compartment temperature in step S103> the refrigerating compartment upper limit temperature TR_2 is satisfied (Yes), cooling of the refrigerating compartment 2 is regarded as an essential state, and the refrigerating compartment damper 20 is opened and refrigerated freezing. Operation, that is, operation of "indoor fan on, refrigerating chamber damper opening, freezing chamber damper opening, compressor on (high rotation)", and both the refrigerating temperature chamber 61 and the freezing temperature chamber 60 are cooled (step S301). After the refrigeration freezing operation is started in step S301, the routine advances to step S112. In addition, the refrigerating chamber upper limit temperature TR_2 is set to return to TR_2 (= 6 deg. C) which is the original value from TR_2 '(= 8 deg. C) after a predetermined time (30 minutes in the refrigerator 1 of the present embodiment).

In addition, by step S111, determination of freezer compartment temperature> freezer compartment upper limit temperature TF_3 is performed during refrigerating chamber operation. Freezer compartment temperature> When the freezer compartment upper limit temperature TF_3 is satisfied (Yes), the cooling of the freezer compartment 60 is regarded as essential, and the compressor 24 is turned at high rotation, and the freezer compartment damper 50 is opened. Both the refrigerating temperature chamber 61 and the refrigerating temperature chamber 60 are cooled by the operation of the refrigeration freezing operation, that is, the operation of "the fan inside, the refrigerator compartment damper opening, the freezer compartment damper opening, and the compressor on (high rotation)". (Step S501). After the refrigeration freezing operation is started in step S501, the routine proceeds to step S112.

If either of step S107 (refrigeration chamber temperature <refrigeration chamber lower limit temperature (TR_1)) or step S108 (cooler temperature> Tevp (reference temperature set in step S105)) is satisfied (example), the fan in the refrigerator during frost cooling operation is It stops (step S401), and it moves to step S109.

FIG. 7 shows the refrigerator 1 of the present embodiment in an environment having an outside air temperature of 30 ° C. and a relative humidity of 70%, and a temperature change in the interior of the refrigerator when it is in a state of stable cooling operation, a fan 9 in the refrigerator, It is a time chart which shows the control state of the refrigerator compartment damper 20, the freezer compartment damper 50, and the compressor 24. As shown in FIG. In addition, detailed measurement conditions are based on JISC9801: 2006.

As shown in FIG. 7, the freezer operation performed in the state of "the fan inside, the refrigerator compartment damper closing, the freezer damper opening, and the compressor on (high rotation)", the evaporation time (ta), the freezer compartment temperature is the freezer compartment lower limit temperature. (TF_1) has been reached (step S104 in FIG. 6), and the frost cooling operation is then carried out in the state of "Fan on, refrigerating chamber damper closing, freezing chamber damper opening, compressor off" (Fig. 6). Step S106). In addition, since step S105 in FIG. 6 results in the refrigerating chamber temperature> TR_a (TR_a = 5 ° C), Tevp is Tevp = Tevp_1 (Tevp_1 = 3 ° C). Since the refrigeration temperature chamber 60 is not cooled during the frost cooling operation, the freezer compartment temperature rises and reaches the compressor on temperature TF_2 at the elapsed time tb (step S109 in FIG. 6). Thus, the compressor 24 is operated at low rotation, and the refrigerator 24 is operated in the refrigerating chamber of "high fan on, freezer damper opening, freezer damper closing, compressor on (low rotation)" (step S110 in Fig. 6). In contrast to the frost cooling in which the compressor 24 does not operate until the elapsed time tb, the refrigeration chamber operation in which the compressor 24 operates in the elapsed time tb is accelerated, so that the cooling of the refrigerating temperature chamber 61 is accelerated, and in the elapsed time tc. And the refrigerator compartment lower limit temperature TR_1 has been reached (step S112 in FIG. 6). Therefore, a transition to a freezer compartment operation (“high fan on, refrigerating chamber damper closing, freezing chamber damper opening, compressor on (high rotation)”) is next, but at the start of the freezer operation, the internal fan for a predetermined time Δt (Δt = 30 seconds) is performed. (9) is stopped (steps S113 to S115 in FIG. 6), and after the predetermined time Δt has elapsed, the in-vehicle fan 9 is operated to start cooling (step S116 in FIG. 6).

As mentioned above, although the structure and basic control system of the refrigerator 1 of this embodiment were demonstrated, the effect which the refrigerator 1 of this embodiment exhibits is demonstrated below.

The refrigerator 1 of this embodiment is equipped with the cold air intensive duct 13, in order to collect the cold air which goes to the food storage chamber (freezing temperature room 60) located in front of the pan 9 in a refrigerator, (13) has a cold air intensive duct outlet opening (13c) in communication with the refrigeration temperature chamber 60 located in front of the in-vehicle fan (9), and the fan cover outlet opening (70a) to the refrigeration temperature chamber (60). A damper (freezing chamber damper 50) is provided to control the blowing, and the blowing to the freezing temperature chamber 60 is performed only through the opening of the freezing chamber damper 50.

Thereby, space efficiency is good and it becomes possible to control the air blowing of the thread provided in front of the inside of a pan in low cost. The reason will be described below with reference to FIGS. 11 and 12.

FIG. 11: is a schematic diagram which shows the positional relationship of the internal fan 9 and the chamber 80 provided with the some blowing port provided in front of it. In addition, FIG. 12: is a schematic diagram which shows the positional relationship of the inside fan 9 and the chamber 81 provided with the some air outlet provided below it (for example, the structure of the refrigerator of patent document 1 corresponds). .

In the case of considering the installation of a damper in order to block blowing to the chamber 81 having a plurality of blowout ports provided below the in-vehicle fan 9 shown in FIG. 12, as shown in FIG. From 9), the part which becomes the air flow path (single air path) 81c which the whole of the cold air sent to the chamber 81 provided with the some blower opening passes is common in the air flow path which guides cold air to blower outlet 81a, 81b. Since the damper 91 is provided in the single air passage 81c, the space for damper installation can be minimized, and the damper can be provided with good space efficiency (for example, the space of the refrigerator described in Patent Document 1). It is for this reason that the efficiency is improved).

In addition, when considering the installation of a damper in order to block the blowing to the chamber 80 provided with the some air outlet provided in front of the in-pan fan 9 shown in FIG. Since the air passages leading to the plurality of ejection openings 80a and 80b of the provided yarn 80 do not basically have a single air flow passage, in order to block the entire air blowing to the yarn 80, as shown in FIG. It is necessary to provide a large damper 90 that closes the entire fan discharge space in the refrigerator. Therefore, space efficiency is bad and accompanied with cost increase.

On the other hand, in the refrigerator 1 of this embodiment, in the air path from the pan 9 in a refrigerator to the food storage room (freezing temperature chamber 60) provided with the some air outlet provided in front of the pan 9, The cold air condensing duct 13 is provided, and the cold air condensing duct 13 is provided with the cold air condensing duct outlet opening 13c which communicates with the refrigeration temperature chamber 60 located in front of the fan 9 in the refrigerator. In the duct outlet opening 13c, a damper (freezing chamber damper 50) is provided to control the blowing to the freezing temperature chamber 60, and the blowing to the freezing temperature chamber 60 is only through the opening of the freezing chamber damper 50. To do it. By forming the cold air intensive duct 13 in this manner, it is possible to reliably guide the air flow to the chamber provided with the plurality of blowout ports provided in front of the fan 9 in the refrigerator to the cold air intensive duct outlet opening 13c. With a damper large enough to be provided in the intensive duct outlet opening 13c, the total amount of cold air directed to the freezing temperature zone chamber 60 can be controlled. Therefore, since there is no need to provide the large damper 90 which closes the whole internal fan discharge space, it becomes a refrigerator which is space efficient and suppresses cost increase.

The refrigerator 1 of this embodiment measures the number of the outlet opening 13a of the cold air intensive duct 13 in order to provide the freezer compartment damper 50, and the refrigeration temperature chamber 60 located in front of the fan 9 in the refrigerator. It is made smaller than the some injection port 3c-5c of this. Thereby, space efficiency is good and it becomes a low cost refrigerator. The reason is explained below.

In the case of considering the installation of a damper to block blowing to the chamber 80 having a plurality of blowout ports provided in front of the in-vehicle fan 9 shown in FIG. 11, the in-vehicle fan 9 is provided in the front. Since the air passages leading to the plurality of ejection openings 80a and 80b of the yarn 80 basically do not have a part of a single air passage, in order to block the entire air blowing to the yarn 80, as shown in FIG. It is effective to provide dampers 90a and 90b in the vicinity of 80a and 80b. However, if a damper is provided for each ejection opening, the space occupied by the damper component increases, resulting in a decrease in space efficiency, and an increase in the number of dampers also increases the cost. In the refrigerator 1 of this embodiment, in order to provide the freezer compartment damper 50, the refrigeration temperature located in front of the fan 9 in the inside of the refrigerator 9 in which the number of the exit openings 13a of the cold air intensive duct 13 is set to one. By making it smaller than the number (7) of the some ejection opening 3c-5c of the large chamber 60, space efficiency is good and it is set as a low cost refrigerator.

The refrigerator 1 of this embodiment has the circumferential length 13d of the exit opening 13c of the cold air intensive duct 13, in order to equip the freezer compartment damper 50, and the refrigeration temperature which is located in front of the fan 9 in the refrigerator. It is made shorter than the total circumferential length of the some jets 3c-5c of the large chamber 60. As shown in FIG. In addition, the circumferential length 102a of the opening 102 of the freezer compartment damper 50 is smaller than the total circumferential lengths of the plurality of ejection openings 3c to 5c of the freezing temperature chamber 60 positioned in front of the fan 9 in the refrigerator. It is short. These results in a highly reliable refrigerator. The reason is explained below.

In general, the purpose of installing the damper is to block cold air at the time of closing. Therefore, even in the air path provided with a damper, if cold air is not reliably shut off, a desired performance may not be obtained, and thus reliability is lowered. On the other hand, since a small gap generally occurs between the structure and the contact portion of the structure, for example, even when the freezer compartment damper 50 is closed, the shock absorbing member 104a provided in the opening and closing plate 104 (more precisely, the opening and closing plate 104). )] And a small amount of cold air leak from the minute gap generated between the frame 102 and the frame 102. In addition, as shown in FIG. 9, the freezer compartment damper 50 is provided in the outlet opening 13c of the cold air intensive duct 13, but is also minutely spaced between the outlet opening 13c and the freezer compartment damper 50. A gap is generated and a small amount of cold air leaks. In order to alleviate the problem of cold air leakage and to provide a reliable refrigerator, it is effective to shorten the length of the seal portion where cold air leaks. For example, in consideration of the case where a damper is provided in each of the ejection openings 3c to 5c, at first glance, it appears that air blowing to the freezing temperature chamber 60 can be reliably blocked, but the seal portion of the damper itself, In addition, the length of the seal portion (approximately equivalent to the length of the ejection opening circumference) between the damper and the ejection openings 3c to 5c forming members becomes long, and cold air easily leaks. On the other hand, in the refrigerator 1 of this embodiment, the circumferential length 13d of the exit opening 13c of the cold air intensive duct 13 is set to 463 mm, and the refrigeration temperature chamber 60 located in front of the pan 9 in the refrigerator. The total circumferential length of the some ejection openings 3c-5c of () is made short enough to 1200 mm. In addition, the circumferential length 102a of the opening 102 of the four freezer compartment damper 50 is set to 430 mm, and is sufficiently shorter than the total circumferential length of the plurality of ejection openings 3c to 5c of the freezing temperature chamber 60, 1200 mm. have. Thereby, since the influence of cold air leakage when the freezer compartment damper 50 is made closed can be reduced, it becomes a highly reliable refrigerator.

In the refrigerator 1 of this embodiment, the area of the exit opening 13c of the cold air intensive duct 13 is made larger than the opening area of the freezer compartment damper to provide the freezer compartment damper 50. When the opening area of the freezer compartment damper 50 and the area of the outlet opening 13c of the cold air intensive duct 13 coincide with each other, the installation position of the freezer compartment damper 50 slightly shifts due to the skill of the assembling worker. In this case, the cross section of the air passage through which the cold air passing through the freezer compartment damper 50 becomes small, and a problem such as a large ventilation resistance may occur. In the refrigerator 1 of the present embodiment, the area of the outlet opening 13c of the cold air intensive duct 13 is increased to 8105.5 mm 2 in order to provide the freezer compartment damper 50 from the opening area 6300 mm 2 of the freezer compartment damper. Therefore, a problem such as a change in ventilation resistance hardly occurs due to the influence of the skill of the assembling worker and the like, resulting in a refrigerator having high reliability.

The refrigerator 1 of this embodiment arrange | positions a single damper (freezer compartment damper 50) in the exit opening 13c of the cold air intensive duct 13. As shown in FIG. In general, in the refrigerator as in the present embodiment, the opening and closing control of the damper is carried out by a program that is loaded in advance, but the program is accompanied by a bug (making the program without the bug is extremely difficult). In consideration of this, when a plurality of freezer compartment dampers 50 are provided to control the blowing to the freezing temperature chamber 60, the control program is more complicated, and thus the probability of unintended operation due to bugs increases. Therefore, in the refrigerator 1 of this embodiment, when the freezer compartment damper 50 is single, it is a refrigerator with high space efficiency, low cost, and high reliability which hardly causes malfunction by a bug.

The refrigerator 1 of this embodiment is equipped with the in-vehicle fan 9 above the cooler 7, and is provided with the outlet opening 13c of the cold air intensive duct 13 above the in-vehicle fan 9. As shown in FIG. As a result, the refrigerator is excellent in energy saving. The reason is explained below.

In general, when the flow flowing in the flow path is redirected, the ventilation resistance increases, and the more the flow rate flows, the larger. Although the refrigerator 1 of this embodiment performs a freezer operation, all the cold air which was pressurized by the in-house fan 9 after having passed through the cooler 7 at the time of a freezer operation is condensed by cold air intensive duct 13 together. It flows undivided toward the exit opening 13c of the duct 13 (to the freezer damper 50). Therefore, since most of the flow is directed to the freezer compartment damper 50, when the cold air boosted by the in-vehicle fan 9 through the cooler 7 is directed to the freezer compartment damper 50, the ventilation resistance increases. In the refrigerator 1 of this embodiment, as mentioned above, the cold air intensive duct provided with the in-vehicle fan 9 above the cooler 7, and the freezer compartment damper 50 is provided above the in-vehicle fan 9 ( Since it is the structure provided with the exit opening 13c of 13), after passing through the cooler 7, the cold air which was pressurized by the in-vehicle fan 9 is restrained when it turns toward the freezer compartment damper 50, The ventilation resistance is not increased. Thereby, since the fan power for obtaining a predetermined air volume is suppressed, it becomes a refrigerator with high energy saving.

In the refrigerator 1 of this embodiment, as shown in FIG. 9, the inside fan 9 is arrange | positioned inclined toward the cooler storage chamber 8 side (back side) by the angle (alpha) 1 from a vertical surface. As a result, the flow passing through the cooler 7 can be smoothly directed to the outlet opening 13c (the freezer damper 50) of the cold air intensive duct 13, whereby the fan power at the time of sending the required air volume is suppressed. Energy saving is improved.

The refrigerator 1 of this embodiment has the in-vehicle fan 9 above the cooler 7, the outlet opening 13c of the cold air intensive duct 13 above the in-pan fan 9, and the cold-air intensive duct exit opening. Above the (13c), a jet port (upper freezer compartment jet port 4c) is provided for jetting the main cooling wind in the food storage chamber (the freezing temperature zone chamber 60) located in front of the fan 9 in the refrigerator. Thereby, it is set as the refrigerator with high energy saving property. The reason is explained below.

In general, since the cold air that has been heat-exchanged in the cooler 7 and cooled to the ambient temperature forms a downward flow from the upper side to the lower side after being ejected into the food storage chamber, the cold air is supplied to the upper side of the chamber to provide more room. Can be cooled well. Therefore, a large amount of discharge air is required for the upper freezer compartment blower 4c. Therefore, in the refrigerator 1 of the present embodiment, the upper freezer compartment blower 4c is made the largest opening area among the blower outlets of the freezing temperature chamber 60. However, in order to obtain a large amount of discharge airflow, not only the size of the opening area but also the ventilation resistance in the path to the jet port becomes a problem. In the refrigerator 1 of this embodiment, as described above, the in-vehicle fan 9 above the cooler 7 and the outlet opening 13c of the cold air intensive duct 13 above the in-vehicle fan 9 (freezer compartment). The damper 50 is provided above the outlet opening 13c (freezing chamber damper 50) of the cold air intensive duct 13, so that the upper freezer compartment ejection port 4c is provided. It flows smoothly toward the freezer compartment jet port 4c. Thereby, since fan power at the time of sending a required air volume is suppressed, energy saving property improves.

In the refrigerator 1 of this embodiment, as shown in FIG. 9, the opening 102 of the freezer compartment damper 50 is inclined by the angle (alpha) 2 from the vertical surface to the said pan inside of a refrigerator. Thereby, cold air flows smoothly toward the upper freezer compartment jet port 4c which requires a large amount of discharge airflow, and fan power at the time of sending the required airflow is suppressed, thereby improving energy saving.

In the refrigerator 1 of this embodiment, another food storage room (refrigeration chamber 2) is provided above the food storage chamber (freezing temperature chamber 60) located in front of the fan 9 in the refrigerator. The refrigerator 1 of this embodiment has a structure which has the in-vehicle fan 9 above the cooler 7, and the outlet opening 13c of the cold air intensive duct 13 above the in-vehicle fan 9, and Cold air flows smoothly upward. Therefore, if another food storage chamber is further installed above, since cooling air can be sent smoothly, since the fan power at the time of sending a required air volume to another food storage chamber (refrigeration chamber 2) is suppressed, energy saving is improved. .

The refrigerator 1 of this embodiment is the refrigeration temperature chamber 60 in which the food storage chamber located in front of the pan inside the refrigerator is maintained at the freezing temperature. This results in a refrigerator having high energy saving. The reason is explained below.

In general, in a refrigerator that cools the inside by boosting the cold air cooled by the cooler by the internal fan and circulating the inside of the refrigerator, since the cold air cooled by the cooler does not rise in temperature near the internal fan discharge region, the temperature becomes the lowest temperature. easy. Therefore, if the food storage chamber located in front of the pan 9 in the refrigerator is a refrigerator compartment or a vegetable compartment maintained at the refrigeration temperature, for example, the food compartment is cooled to a temperature (minus temperature) below the refrigeration temperature range and the food is frozen. There may be a problem. In order to avoid such a situation, it must be heated by a heater and kept at the refrigeration temperature. Therefore, more power is required for heating the heater for temperature compensation while cooling the inside of the refrigerator, so that energy saving is low. On the other hand, like the refrigerator 1 of this embodiment, when it is set as the food storage room located in front of the pan 9 in the inside, and it is set as the chamber (freezing temperature room 60) maintained at the freezing temperature, it will become low temperature. Since easy property can be utilized effectively, energy saving is high.

In addition, even when the food storage chamber located in front of the pan 9 in the refrigerator is the freezing temperature chamber 60, even if the freezer compartment damper 50 is closed, the opening / closing plate 104 and the frame ( Leakage of cold air is generated from the minute gap generated between 102 or the minute gap generated between the outlet opening 13c of the cold air intensive duct 13 in which the freezer compartment damper 50 is provided and the freezer compartment damper 50. do. When the food storage chamber located in front of the pan 9 in the refrigerator is the freezing temperature chamber 60, the leakage of the cold air may cause a significant decrease in reliability and a decrease in energy saving. The reason is explained below.

As described above, the refrigerator of the present embodiment performs the refrigerator compartment operation and the frost cooling operation with the freezer compartment damper 50 in a closed state. In this operation mode, only the refrigerating temperature zone 61 is blown, so that the relatively high cold air circulates. Therefore, in these operating modes, when cold air with a relatively high temperature leaks into the freezing temperature room 60, the freezing temperature room 60 may be warmed, causing problems such as melting of frozen food. In addition, warming the freezing temperature chamber 60 increases the heat load when cooling the freezing temperature chamber 60. In order to cool the freezer temperature room 60, it is necessary to set it to a low cooler temperature below the freezer temperature room temperature, for example, -25 ° C or the like, but in general, a freezer operation in which the cooler temperature is low temperature is low in efficiency ( Low grade factor). Therefore, when cold air leaks and the refrigeration temperature room 60 is warmed, the load at the time of freezer operation increases, and energy saving property falls. As described above, if there is a leakage of cold air into the freezing temperature chamber 60 during the refrigerating chamber operation or the frost cooling operation performed in the freezer compartment damper 50 closed state, a problem of reliability such as melting of frozen foods and energy saving Problems such as deterioration occur. Therefore, in the case where the food storage chamber located in front of the pan 9 in the refrigerator is the freezing temperature chamber 60, the above-described structure for reducing cold air leakage becomes effective.

The refrigerator 1 of this embodiment is equipped with the refrigerating chamber 2 maintained by the refrigeration temperature above the food storage chamber (freezing temperature chamber 60) located in front of the pan 9 in a refrigerator. As mentioned above, in order to cool efficiently using the flow which goes upward, it is advantageous to provide another food storage chamber further upward. However, since the distance from the in-vehicle fan 9 is longer (the longer the air path is), and the low-temperature cold air is more dense, the downward force may act, so that the amount of air flow is located in front of the in-vehicle fan 9. It becomes less compared with a storage chamber (freezing temperature zone chamber 60). Therefore, above the food storage chamber (freezing temperature room 60) located in front of the pan 9 in the refrigerator, a chamber is disposed at a freezing temperature that requires a lot of cold air (air volume) in order to keep it at a low temperature. It is not desirable. That is, it is preferable to arrange the chamber maintained at the refrigeration temperature above the food storage chamber (the freezing temperature chamber 60) located in front of the inside of the pan 9.

The refrigerator 1 of this embodiment is equipped with the refrigerating chamber 2 and the vegetable chamber 6 below the food storage chamber (freezing temperature zone 60) located in front of the pan 9 in a refrigerator. Thereby, it becomes easy to maintain a refrigerator compartment and a vegetable compartment at appropriate temperature. The reason is explained below.

In general, both the refrigerating compartment and the vegetable compartment are kept at the refrigeration temperature, but the vegetable compartment may contain a weak material (plant causing low temperature disorder) at a low temperature, so it is preferable to maintain the temperature slightly higher than the refrigerating compartment. (For example, 3 degreeC in a refrigerator compartment, 5 degreeC etc. in a vegetable compartment). Therefore, when the vegetable compartment is a refrigerator which is too cold, it is necessary to arrange | position a heater in a vegetable compartment, and to keep it at predetermined temperature by heater heating. In the case of such a refrigerator, energy saving is deteriorated by heater electric power. In order to avoid such a situation, it is necessary to cool the vegetable compartment with a cooling capacity lower than a refrigerator compartment. That is, it is effective to send cold air of temperature higher than cold air sent to the refrigerator compartment 2 to the vegetable compartment 6, or to send a small amount of cold air from the refrigerator compartment 2 in the same temperature. In the refrigerator 1 of this embodiment, although the refrigerator compartment 2 is provided above the refrigeration temperature chamber 60, and the vegetable compartment 6 is provided below the refrigeration temperature chamber 60, by this, the refrigerator of this embodiment is provided. In the case where the refrigerator compartment 2 and the vegetable compartment 6 are arranged in series as in (1), since the chilled room 2 is cooled, the chilled air whose temperature has risen can be sent to the vegetable compartment 6, even if the air volume is the same, the refrigerator compartment Cold air of a temperature higher than the cold air sent to (2) can be sent to the vegetable compartment 6, and it becomes easy to maintain the refrigerating compartment 2 and the vegetable compartment 6 at an appropriate temperature.

Moreover, as another embodiment, the case where the refrigerator compartment 2 and the vegetable compartment 6 are arrange | positioned in parallel is also considered. In this case, as described above, since the cold air from the in-vehicle pan 9 which tends to be directed to the upper refrigerating chamber 2 is forcibly turned downward and directed to the vegetable chamber 6, the vegetable chamber ( 6) The ventilation resistance of the air path to 6) becomes large. Therefore, in this case, although cold air of the same temperature reaches the refrigerating chamber 2 and the vegetable chamber 6, the air volume to the vegetable chamber 6 can be easily suppressed, and the refrigerating chamber 2 and the vegetable chamber 6 are It becomes easy to maintain at an appropriate temperature.

For the above reason, the refrigerating chamber 2 and the vegetable chamber 6 are maintained at an appropriate temperature by arranging the refrigerating chamber 2 above the refrigerating temperature chamber 60 and the vegetable chamber 6 below the refrigerating temperature chamber 60. It becomes easy to do it.

The refrigerator 1 of this embodiment is arrange | positioned so that the main surface (surface which forms the frame 103) which forms the freezer compartment damper 50 may incline by (beta) 2 from a horizontal plane. Even when water is dripped into the freezer compartment damper 50 during the defrosting operation, the water flows down from the freezer compartment damper 50, so that water remains in the freezer compartment damper 50 and freezes thereafter. Can be prevented, resulting in a refrigerator having high reliability. In addition, although β2 is 6 degrees, by setting β2 to 6 degrees or more, water will fall easily and the water which stays will not freeze, and it becomes a reliable refrigerator.

In the refrigerator 1 of this embodiment, the freezer compartment damper 50 is provided with the opening 102, the rotating shaft 101 is provided in the vicinity of one side of the opening 102, and it is linked with the rotation operation of the rotating shaft 101. It is provided with the opening-closing plate 104, and it is set as the damper which the opening-and-closing control of the opening 102 is performed by the angular position around the rotating shaft 101 of the opening-and-closing board 104. FIG. By utilizing the rotational movement of the opening and closing plate 104, the opening and closing plate 104 can be pressed against the surface 102a of the opening 102 facing the opening and closing plate 104 by a simple mechanism, thereby ensuring the opening. A closed state of 102 can be formed. This results in a low cost and highly reliable damper.

In the refrigerator 1 of this embodiment, the freezer compartment damper 50 is arrange | positioned so that the rotating shaft 101 of the freezer compartment damper 50 may become upper side. As a result, the water stays in the vicinity of the rotation shaft 101 and freezes, whereby the freezer compartment damper 50 cannot be easily rotated, resulting in a highly reliable refrigerator.

In the refrigerator 1 of this embodiment, the opening and closing plate 104 of the freezer compartment damper 50 is arrange | positioned so that it may open to the cold air intensive duct 13 side. In the case where the closed state of the freezer compartment damper 50 is taken into consideration, for example, in the case where it is arranged to open to the freezing temperature chamber 60 side, the cold air duct 13 side, that is, the discharge region side of the in-vehicle fan 9 Since the pressure is high and the pressure is lowered on the freezing temperature chamber 60 side, a force is applied in the direction in which the opening and closing plate 104 is opened. On the other hand, when the opening and closing plate 104 is opened to the cold air intensive duct 13 side, a force is applied in a direction in which the sealing degree increases. Therefore, in the refrigerator 1 of this embodiment, the opening / closing plate 104 of the freezer compartment damper 50 is arrange | positioned so that it may open to the cold air intensive duct 13 side, and the leakage from the seal part 102a of the freezer compartment damper 50 will be carried out. This is unlikely to occur, resulting in a highly reliable refrigerator.

The refrigerator 1 of this embodiment makes the opening angle (theta) of the freezer compartment damper 50 60 degrees at the time of refrigeration freezing operation. 9, in order to control the blockage degree of the inflow part of the refrigerating chamber duct 11 by the opening angle of the freezer compartment damper 50, and to make the amount of air blown into the refrigerating temperature zone chamber 61 into an appropriate amount. to be. At the time of refrigeration freezing operation, if the opening angle (theta) of the freezer compartment damper 50 is made larger (for example, 90 degree | times), the blockage degree of the inflow part of the refrigerating compartment duct 11 will become large, The ventilation resistance of 11) becomes large, and the air volume to the refrigeration temperature zone chamber 61 decreases. Therefore, cooling of the refrigerating temperature zone chamber 61 is suppressed. On the other hand, when opening angle (theta) of the freezer compartment damper 50 is made smaller (for example, 45 degree | times), the ventilation resistance of the refrigerator compartment duct 11 will become small, and the refrigerator compartment temperature chamber 61 will become colder. Moreover, when the opening angle of the freezer compartment damper 50 is made smaller than 60 degrees, the ventilation resistance of the flow toward the refrigerator temperature zone chamber 61 decreases, and the ventilation resistance of the flow toward the freezer temperature zone chamber 60 increases. Therefore, the cooling focused on the refrigerating temperature zone chamber 61 can be performed while cooling the freezing temperature zone chamber 60. That is, in the refrigerator 1 of this embodiment, the air volume of the freezing temperature chamber 60 and the refrigerating temperature chamber 61 can be adjusted by opening angle (theta) of the freezer compartment damper 50, and each room is appropriately temperatured. It becomes easy to do it.

The refrigerator 1 of this embodiment arrange | positions the heater which thermally contacts the freezer compartment damper 50. As shown in FIG. As a result, even if the freezer compartment damper 50 is frozen and cannot be rotated, it can be melted by a heater, thereby providing a refrigerator having high reliability.

In addition, in the refrigerator 1 of this embodiment, the warm-up storage space 26 is formed in the lower front of the cooler storage chamber 8, as shown in FIG. Moreover, the freezer compartment duct 12 is arrange | positioned in front of the cold air intensive duct 13 so that the front surface of the cold air intensive duct 13 may be covered. Thereby, energy saving can be made high. The reason is explained below.

As mentioned above, the refrigerator 1 of this embodiment is equipped with the freezer compartment damper 50, and performs a refrigerator compartment cooling operation. Since the refrigerating chamber cooling operation cools only the refrigerating temperature zone chamber 61, cold air of a relatively high temperature circulates. As a result, the temperature of the cooler 7 is increased, the efficiency of the refrigeration cycle (coefficient of performance: COP) is increased, and energy saving is improved.

However, in a configuration in which the front of the cooler storage chamber 8 is the freezing temperature chamber 60, when the heat insulation between the freezing temperature chamber 60 and the cooler storage chamber 8 is not insulated, the cooler 7 is a freezer chamber. It cools from the (60) side. Thereby, the temperature of the cooler 7 does not rise, and efficient operation cannot be performed. In addition, in the refrigerating chamber cooling operation, relatively high temperature cold air flows in the cold air intensive duct 13. Therefore, the cold air in the cold air intensive duct 13 cools from the freezing chamber 60, and the temperature of cold air which circulates falls. As a result, the temperature of the cooler 7 decreases.

Therefore, in the refrigerator 1 of this embodiment, the warm air storage space 26 is formed in front of the cooler storage chamber 8, and the freezer compartment duct 12 is provided in front of the cold air intensive duct 13. As shown in FIG. Thereby, it becomes an air insulation layer at the time of a refrigerating chamber cooling operation and a frost cooling operation, and can improve energy saving.

In the refrigerator 1 of the present embodiment, at least one of the front surface of the cooler storage chamber 8, the bottom surface of the refrigerator chamber 2, the front surface of the refrigerator compartment-vegetable chamber communication duct 16, and the upper surface of the vegetable chamber return duct 18. The vacuum heat insulating material 25 is arrange | positioned at any one or all. In other words, a duct through which the return cold air flows after being blown from the cooler storage chamber 8 to the refrigerating temperature chamber 61 is provided on the side of the cooler 7 and behind the freezing temperature chamber 60, and at least this duct and The vacuum insulator 25 is provided between the refrigeration temperature zone chambers 60. Thereby, it can suppress that the heat of the comparatively high temperature air circulated at the time of a refrigerating compartment cooling operation is transmitted to the refrigerating temperature chamber 60, and warms. In addition, the refrigeration temperature zone chamber 60 is difficult to warm, the temperature of the cold air circulating is difficult to lower. Therefore, the temperature fall of the cooler 7 by the temperature of the circulating cold air falls at the time of a refrigerator compartment cooling operation can be suppressed, and it can suppress that energy saving property falls.

As described above, the refrigerator of the present embodiment performs the refrigerator compartment operation and the frost cooling operation. In this operation mode, only the refrigerating chamber 61 is blown, and therefore, relatively high temperature cold air circulates. Therefore, in these operation modes, when cold air with relatively high temperature leaks into the freezer compartment 60, the freezer compartment 60 is warmed, and a problem such as melting of frozen food may occur. In addition, warming the freezing chamber 60 increases the heat load when cooling the freezing chamber 60. In order to cool the freezer compartment 60, it is necessary to set it as the low cooler temperature below freezer compartment temperature, for example, -25 degreeC. In general, a freezer compartment operation having a cooler temperature at a low temperature is low in efficiency (low grade coefficient), and increasing energy load during refrigeration operation lowers energy savings. As described above, when cold air leaks into the freezer compartment 60 during the refrigerating chamber operation or the frost cooling operation, problems such as reliability problems such as melting of frozen foods and deterioration of energy savings occur.

Here, the damper is to block the cold air by the structure as shown in FIG. 10, for example, but in general, the sealing degree is not perfect, but the cold air leaks slightly from the seal surface. Therefore, the longer the length of the seal surface, that is, the circumferential length of the opening of the damper, the greater the amount of cold air leakage. Therefore, increasing the number of dampers or using a large damper at the end leads to an increase in the amount of cold air leakage, which may cause reliability problems such as melting of frozen foods, or deterioration of energy saving.

In the case where the chamber provided in front of the pan inside the refrigerator is a refrigerator compartment, the cooling operation in the refrigerator compartment damper closed state is a freezer compartment operation. Thus, when a large amount of cold air leaks into the refrigerator compartment, there is a problem that food is frozen in large quantities. Although it may occur, if the leakage amount (a leakage amount of about 0.01 m 3 / min or less) is generally assumed, the temperature of the refrigerating chamber is basically lowered slightly, and the effect is relatively low. Therefore, in particular, in the case where the chamber provided in front of the fan in the refrigerator is a freezer compartment, consideration for cold air leakage is necessary.

As explained above, in the refrigerator of this embodiment, it is the freezing chamber 60 provided in front of the fan 9 in the inside of a refrigerator, and deterioration of energy saving property is made possible by opening / closing control of the ventilation to the freezing chamber 60 by a single damper, The fall of reliability can be suppressed.

The refrigerator of this embodiment is equipped with the in-vehicle fan 9 above the cooler 7, and is equipped with the freezer compartment damper 50 above the in-vehicle fan 9. As shown in FIG. As a result, the refrigerator is excellent in energy saving. The reason is explained below.

In general, when the flow flowing in the flow path is redirected, the ventilation resistance increases, and the more the flow rate flows, the larger. Although the refrigerator of this embodiment performs a freezer operation, in the case of a freezer operation, the cold air which was pressurized by the in-vehicle fan 9 after passing through the cooler 7 is not classified by the cold air intensive duct 13, but all the freezer compartment It flows toward the damper 50. Therefore, since most of the flow is directed to the freezer compartment damper 50, when the cold air boosted by the in-vehicle fan 9 through the cooler 7 is directed to the freezer compartment damper 50, the ventilation resistance increases. In the refrigerator of the present embodiment, as described above, the refrigerator 9 includes the in-vehicle fan 9 above the cooler 7, and the freezer compartment damper 50 is provided above the in-vehicle fan 9. After passing through 7), the cold air boosted by the internal fan 9 suppresses the turnover toward the freezer compartment damper 50 so as not to increase the ventilation resistance. Thereby, since the fan power for obtaining a predetermined air volume is suppressed, it becomes a refrigerator with high energy saving.

The refrigerator according to the present embodiment includes an in-vehicle fan 9 above the cooler 7, a freezer compartment damper 50 above the in-vehicle fan 9, and an upper freezer compartment outlet 4c above the freezer compartment damper 50. Equipped. Thereby, it is set as the refrigerator with high energy saving property. The reason is explained below.

In general, since the cold air having a lower temperature than the ambient temperature forms a downward flow from the upper side to the lower side, the inner chamber can be satisfactorily cooled by supplying more cold air above the chamber. Therefore, a large amount of discharge air is required for the upper freezer compartment jet port 4c. Therefore, in the refrigerator of the present embodiment, the upper freezer compartment jet port 4c is the largest opening area among the outlets of the freezer compartment 60. In order to obtain the above, not only the size of the opening area, but also the ventilation resistance in the path leading to the jet port becomes a problem. In the refrigerator of the present embodiment, as described above, the in-vehicle fan 9 above the cooler 7, the freezer compartment damper 50 above the in-house fan 9, and the upper freezer compartment above the freezer compartment damper 50. Since the jet port 4c is provided, cold air flows smoothly toward the upper freezer compartment jet port 4c which requires a large amount of discharge airflow. Thereby, since fan power at the time of sending a required air volume is suppressed, energy saving property improves.

In the refrigerator of the present embodiment, the chamber provided in front of the in-vehicle fan 9 is the freezer compartment 60, and the in-vehicle fan 9 is placed above the cooler 7, and the freezer compartment damper is placed above the in-vehicle fan 9. 50, and the refrigerating chamber 61 (refrigeration chamber 2) is provided above the freezing chamber 60. As shown in FIG. As a result, the refrigerator is excellent in energy saving. The reason is explained below.

A refrigerator having a refrigerator compartment and a freezer compartment needs to send a predetermined amount of air to the refrigerator compartment as well as to the refrigerator compartment with maximum ventilation resistance. The refrigerator according to the present embodiment has a cooler 7 from the lower side, an in-vehicle fan 9 above the cooler 7, and a freezer compartment damper 50 above the in-vehicle fan 9. The flow is smooth. Therefore, by allowing cold air to flow from the lower part to the upper part of the air path leading to the refrigerating chamber 2, the cool air can be smoothly sent to the refrigerating chamber 2, so that the blowing resistance can be suppressed. Thereby, since fan power at the time of sending a required air volume to a refrigerator compartment is suppressed, energy saving property improves.

In the refrigerator of the present embodiment, the chamber provided in front of the in-vehicle fan 9 is the freezer compartment 60, and the in-vehicle fan 9 is placed above the cooler 7, and the freezer compartment damper is placed above the in-vehicle fan 9. 50, and the refrigerator compartment 2 is provided above the freezer compartment 60, and the vegetable compartment 6 is provided below the freezer compartment 60. As shown in FIG. As a result, the refrigerating chamber 2 and the vegetable chamber 6 are easily maintained at an appropriate temperature. The reason is explained below.

In general, both the refrigerating compartment and the vegetable compartment are kept at the refrigeration temperature, but the vegetable compartment may contain weak ingredients (plants causing low temperature disorder) at a low temperature, so it is preferable to maintain the temperature slightly higher than the refrigerating compartment. (For example, 3 degreeC in a refrigerator compartment, 5 degreeC etc. in a vegetable compartment). For this reason, it is necessary to make a vegetable room into the cooling capacity lower than a refrigerator compartment. That is, it becomes effective to send cold air of temperature higher than cold air sent to a refrigerating chamber, or to send a small amount of cold air from a refrigerator room at the same temperature. In the refrigerator of this embodiment, although the refrigerator compartment 2 is provided above the freezer compartment 60, and the vegetable compartment 6 is provided below the freezer compartment 60, it is similar to the refrigerator compartment 2 of the refrigerator of this embodiment. In the case where the vegetable compartment 6 is arranged in series, by cooling the refrigerator compartment 2, it is possible to send chilled air having risen in temperature to the vegetable compartment 6, so that even if the air volume is the same, the temperature higher than the cold air sent to the refrigerator compartment 2 is achieved. Cool air can be sent to the vegetable chamber 6, and it becomes easy to maintain it at the appropriate temperature mentioned above.

Moreover, as another embodiment, the case where a refrigerator compartment and a vegetable compartment are arrange | positioned in parallel is also considered. In this case, as described above, the cold air from the in-vehicle pan 9, which is easily directed toward the upper refrigerating chamber, is forcibly turned downward and directed to the vegetable compartment. Therefore, the ventilation resistance of the air path toward the vegetable compartment without special consideration is Grows Therefore, in this case, although cold air of the same temperature reaches the refrigerating chamber and the vegetable chamber, the air volume to the vegetable chamber can be easily suppressed low.

For the above reasons, it is easy to maintain the refrigerator compartment and the vegetable compartment at an appropriate temperature by arranging the refrigerator compartment above the freezer compartment and the vegetable compartment below the freezer compartment.

Although the refrigerator of this embodiment is equipped with the freezer compartment damper 50 which opens the in-vehicle fan 9 of the cooler 7 toward the front substantially in the inside of the in-vehicle fan 9, the rotating shaft of the freezer compartment damper 50 ( 101 arrange | positions the freezer compartment damper so that it may become a position (upper side) away from the inside fan 9. In general, in the region near the in-pan fan, the closer to the in-pan fan, the faster the flow, and the lower the flow may be. In the refrigerator of the present embodiment, since the rotary shaft 101 is located at a position far from the in-vehicle fan 9 with respect to the freezer compartment damper 50, a bad accident such as the rotary shaft 101 is frozen and becomes impossible to rotate may occur. It is difficult.

In the refrigerator of the present embodiment, the opening and closing plate 104 of the freezer compartment damper 50 is opened to the rear side. Thereby, since the inside dimension of the freezer compartment blow duct 12 does not need to be taken larger than necessary, space efficiency improves.

The refrigerator of this embodiment makes the opening angle (theta) of the freezer compartment damper 50 60 degrees at the time of refrigeration freezing operation. This is because, in the refrigerating and freezing operation, when the opening angle θ of the freezer compartment damper 50 is made larger (for example, 90 degrees), the resistance of the flow of the refrigerating compartment blowing duct 11 becomes too large, If the air volume to the refrigerating compartment 2 is insufficient, cooling of the refrigerating compartment 2 worsens, and if the opening angle θ of the freezer compartment damper 50 is made smaller (for example, 45 degrees), the refrigerating compartment blowing duct 11 Since the resistance of the flow of) becomes too small, the refrigerating chamber 2 becomes colder. In the refrigerator of this embodiment, by setting the opening angle (theta) of the freezer compartment damper 50 at the time of refrigeration freezing operation to 60 degrees, the air volume to the refrigerator compartment 2 is adjusted, and the refrigerator compartment 2 is made to cool suitably.

In the refrigerator of this embodiment, the outer peripheral part 13a of the cold air intensive duct 13 has the minimum distance from the rotation center of the in-vehicle fan 9 to the outer peripheral part 13a (minimum dimension position shown in FIG. 8). The enlarged air passage 13b which sequentially expands in the rotation direction of the in-vehicle fan 9 is provided. As a result, the swirl component in the discharge flow of the internal fan 9 can be effectively recovered, and the internal fan 9 can be efficiently used, and the energy saving property is improved.

In the refrigerator of this embodiment, as for the cold air intensive duct 13, the distance from the rotation center of the in-vehicle fan 9 to the outer peripheral part 13a becomes the enlargement more than 180 degrees in the rotation direction of the in-vehicle fan 9 from the position which becomes the minimum. The air path 13b is provided. Thereby, since the distance which can be used for the pressure recovery of the turning component in the discharge flow from the internal fan 9 can be ensured enough, the internal fan 9 can be used efficiently and energy saving property improves.

In the refrigerator of this embodiment, as shown in FIG. 8, the freezer compartment damper 50 is arrange | positioned inclined by the angle (beta) 2 from the horizontal plane. Even when water is dripped into the freezer compartment damper 50 at the time of defrosting operation, water flows out of the freezer compartment damper 50, thereby preventing water from remaining in the freezer compartment damper 50 and freezing thereafter. There is a reliable refrigerator.

In the refrigerator of this embodiment, as shown in FIG. 9, the freezer compartment damper 50 is arrange | positioned inclined to the back side by the angle (alpha) 2 from a perpendicular surface. As a result, the blowing air from the in-vehicle fan 9 provided below the freezer compartment damper 50 is smoothly discharged to the upper freezer compartment blowing port 4c through which a large amount of air is discharged. Therefore, the fan power at the time of sending the required air volume is suppressed. Therefore, energy saving is improved.

In the refrigerator of this embodiment, as shown in FIG. 9, the inside fan 9 is arrange | positioned inclined to the back side by the angle (alpha) 1 from a perpendicular surface. Thereby, since the flow which passed the cooler 7 can be smoothly directed to the freezer compartment damper 50, fan power at the time of sending a required air volume is suppressed, and energy saving is improved.

In the refrigerator of this embodiment, the communication hole 75 in which the inside of the cold air condensing duct 13 and the cooler storage chamber 8 communicate is formed. As a result, water is retained in the cold air duct 13, and ice (frost) grows, and it is possible to prevent the internal fan from being locked, resulting in a highly reliable refrigerator.

In addition, in order to prevent the water from remaining in the cold air duct 13, the communication hole 75 may be provided so as to communicate with the freezing chamber 60, or may be provided so as to communicate with the cooler storage chamber 8, but the present embodiment The refrigerator of the form forms the communication hole 75 so that it may communicate with the cooler storage chamber 8. Thereby, deterioration of energy saving property is suppressed and reliability is formed. The reason is explained below.

As mentioned above, the refrigerator of this embodiment is a refrigerator provided with the freezer compartment damper 50, and performs a refrigerator compartment operation and a frost cooling operation. In this operation mode, only the refrigerating chamber 61 is blown, so that the relatively high cold air circulates. Therefore, for example, when the communication hole 75 is formed to communicate with the freezer compartment 60, in this operation mode, cold air having a relatively high temperature flows into the freezer compartment 60 through the communication hole 75, and the freezer compartment 60 is provided. ) Will be warmed, and problems such as melting of frozen food may occur. In addition, the warming of the freezing chamber 60 increases the heat load of cooling the freezing chamber 60. In order to cool the freezer compartment 60, it is necessary to use a cooler temperature lower than the freezer compartment temperature. In general, a freezer compartment operation in which the cooler temperature is a low temperature is low in efficiency (low COP) and a load during the freezer compartment operation. If it increases, energy saving will fall. Therefore, in the refrigerator of this embodiment, the communication hole 75 is formed so that it may communicate with the cooler storage chamber 8, the deterioration of energy saving property is suppressed, and reliability is improved.

In the refrigerator of this embodiment, as shown in FIG. 8 or 9, the communication hole 75 in which the cold air duct 13 communicates with the cooler storage chamber 8 communicates with the space in the cold air duct 13. It is formed to be located at the lower end. Thereby, deterioration of energy saving property can be suppressed. The reason is explained below.

If water flows into the cold air duct 13 during defrosting, the communication hole 75 is not formed so as to be located at the lower end of the space in the cold air duct 13, so that a portion of the water flows down into the cold air duct 13. Going. This storage water is frozen in the cooling operation and melted in the defrosting operation. Therefore, unnecessary energy for freezing is required in the cooling operation (specifically, compressor power increases), and energy for melting is needed during defrosting (specifically, defrost heater power increases). Therefore, in the refrigerator of this embodiment, deterioration of energy saving is suppressed by forming the communication port which the space inside the fan cover air path on the inside of a fan discharge side, and the space outside a fan cover communicates in the lower end part of the air path in a fan cover.

In the refrigerator of this embodiment, as shown in FIG. 4, the warm air storage space 26 is formed in front of the lower part of the cooler storage chamber 8. Moreover, the upper freezer compartment blowing duct 12 is arrange | positioned in front of the cold air intensive duct 13. This improves energy saving. The reason is explained below.

As mentioned above, in the refrigerator of this embodiment, it is a refrigerator provided with the freezer compartment damper 50, and performs a refrigerator compartment operation, but since a refrigerator compartment operation cools only the refrigerator compartment 61, the refrigerator of comparatively high temperature circulates and The temperature rises. If the cooler temperature is high, the efficiency (grade factor COP) of the refrigeration cycle is high, and the energy saving is high. However, as in the refrigerator of the present embodiment, when the front of the cooler storage chamber 8 is the freezing chamber 60, if the heat insulation between the freezing chamber 60 and the cooler storage chamber 8 is not performed, the cooler temperature is determined by the freezing chamber ( By cooling from 60), the temperature does not rise, and efficient operation cannot be performed. In the same way, during operation of the refrigerating chamber, cold air having a relatively high temperature also flows in the cold air duct 13, so that when the air in the cold air duct cools down from the freezing chamber 60, the temperature of the cold air circulating decreases. Cooler temperature will fall.

Therefore, in the refrigerator of this embodiment, a warm air storage space is formed in front of a cooler storage chamber, and the cold air intensive duct 13 is arrange | positioned in front of a cold air intensive duct, and it utilizes them as an air insulation layer at the time of cold room operation and frost cooling operation. This improves energy savings.

In the refrigerator of the present embodiment, the fan cover 70 and the partition plate 54 (the plates partitioning the freezer compartment 60 and the cooler storage compartment 8) are integrally formed, and a separate in-house fan 9 is provided. The held fan hold 71 is fixed at a predetermined position. Thereby, it becomes low cost, high reliability, and the structure which suppressed deterioration of energy saving property. The reason is explained below.

As shown in FIG. 9, the structure of the periphery of the inside fan 9 consists of the fan cover 70, the partition plate 54, and the fan hold 71. As shown in FIG. As described above, the refrigerator of the present embodiment is a refrigerator which performs a refrigerator compartment operation and a frost cooling operation. In these operation modes, the cool air in the cold air duct 13 circulates relatively high temperature. When the cold air leaks into the freezer compartment 60, the freezer compartment 60 is warmed, and problems such as melting of frozen foods may occur, and energy savings are also reduced. Therefore, in order to reduce as much as possible the location where such cold air leakage occurs, it is preferable that the fan cover 70, the partition plate 54, and the fan hold 71 are integrally molded together.

However, in order to reduce the cost of the parts, it is preferable to mold the parts by injection molding, and it is impossible to mold all of them integrally, so that the fan cover 70 and the partition plate 54 are integrated and the fan hold ( One of them is selected separately from 71, or the partition plate 54 and the fan hold 71 are integrated, and the fan cover 70 is selected separately.

At this time, if the latter is selected, when a gap occurs between the fan cover 70 and the fan hold 71, the air in the cold air collecting duct 13 leaks to the freezing chamber 60 side. On the other hand, like the refrigerator of the present embodiment, if the former (the fan cover 70 and the partition plate 54 are integrally formed and the fan hold 71 is a separate body), the fan cover 70 and the fan hold 71 are separated. Even if a gap is generated, even if the air in the cold air collecting duct 13 leaks into the cooler storage chamber 8, it does not leak into the freezing chamber 60. Therefore, due to the rise in the temperature of the freezing chamber 60, problems such as melting of frozen foods are unlikely to occur, and the refrigerator is suppressed from deterioration in energy saving.

The refrigerator of this embodiment integrates the cover member in front of a blower, and the wall surface of a cooler room. That is, the fan cover 70 and the partition plate 54 are integral, and the fan hold 71 which is a blower support member is set apart, and the extending part 76a of the fan cover heater 76 is fan hold 71. Is attached to the partition plate 54 in the cooler accommodating chamber 8 via the communication hole 75 formed in (). As a result, a refrigerator having high reliability is obtained. The reason is explained below.

The communication hole 75 is attached by attaching the extending portion 76a of the fan cover heater 76 to the partition plate 54 in the cooler storage chamber 8 through the communication hole 75 formed in the fan hold 71. ) When the vicinity is energized by the fan cover heater 76, it heats satisfactorily, and the ice which generate | occur | produced in the vicinity of the communication hole melt | dissolves, and the ice grows in the cold air intensive duct 13 gradually, and prevents the pan 9 from being locked. can do. Therefore, a reliable refrigerator can be obtained. However, when the fan cover 70 and the partition plate 54 are separate bodies, the extending portion 76a of the fan cover heater 76 is attached between the fan cover 70 and the separate parts of the partition plate 54, When assembling in a refrigerator, it may peel off by the force which it takes. When the extending | stretching part 76a peels off, since the vicinity of the communication hole 75 is not heated favorably by the fan cover heater 76, reliability falls. Therefore, the refrigerator of this embodiment integrates the fan cover 70 and the partition plate 54, and the communication hole 75 which formed the extending part 76a of the fan cover heater 76 in the fan hold 71 is carried out. By attaching to the partition plate 54 in the cooler storage chamber 8, it becomes a highly reliable refrigerator.

In the refrigerator of the present embodiment, a part of the fan cover heater 76 (stretching part 76a) is extended into the cooler storage chamber 8 via the communication hole 75, but for example, a fan cover. A high thermal conductivity member such as an aluminum foil separate from the heater 76 may be thermally contacted with the fan cover heater 76 and attached to the partition plate 54 via the communication hole 75.

1: refrigerator
2: cold storage room
3: ice making room
4: upper freezer
5: lower freezer
6: vegetable room
7: cooler
8: cooler storage room
9: high fan
10: insulation box
11: refrigerator compartment duct
12: freezer duct
13: cold intensive duct
16: cold room-vegetable room communication duct
17: freezer return port
18: vegetable room return duct
18a: Vegetable room return outlet
19: machine room
20: cold room damper
21: evaporating dish
22: defrost heater
23: home
24: compressor
26: warm storage space
31: control board
33: fridge temperature sensor
33a: Vegetable Room Temperature Sensor
34: freezer temperature sensor
35: cooler temperature sensor
50: freezer damper
53: top cover
54: partition plate
60: refrigeration temperature room
61: refrigeration temperature room
70: fan cover
71: fan hold
75: communication hole
100: drive means
101: axis of rotation
102: opening
103: frame
104: opening and closing board

Claims (23)

A refrigerator temperature compartment and a refrigeration temperature compartment, each compartment formed in the refrigerator body for storing food,
A cooler in which cold air for cooling the freezing temperature chamber and the refrigerating temperature chamber is heat-exchanged;
A cooler storage room in which the cooler is installed;
And an internal fan for blowing cold air heat-exchanged in the cooler to the freezing temperature chamber and the refrigerating temperature chamber.
The refrigeration temperature chamber or the refrigerating temperature chamber is provided in front of the fan in the refrigerator, provided with a plurality of air outlets for ejecting cold air, and further comprises a cold air intensive duct for collecting cold air,
The cold air intensive duct has an outlet opening for blowing cold air in communication with the refrigeration temperature chamber or the refrigerating temperature chamber located in front of the fan in the refrigerator, and a damper for controlling the air blowing in the outlet opening. To do, refrigerator. The refrigerator according to claim 1, wherein the number of the outlet openings of the cold air duct is smaller than the number of the outlets. The refrigerator according to claim 1, wherein a circumferential length of the outlet opening of the cold air duct is shorter than a circumferential length of the jet port. The refrigerator according to claim 1, wherein a circumferential length of the opening of the damper is shorter than a circumferential length of the jet port. The refrigerator according to claim 1, wherein an area of the outlet opening of the cold air duct is larger than that of the damper. The refrigerator according to claim 1, wherein the in-fridge fan is provided above the cooler, and the outlet opening of the cold air intensive duct is formed above the in-fridge fan. The refrigerator according to claim 6, wherein the fan in the refrigerator is inclined from the vertical surface to the cooler storage chamber side. The refrigerator of Claim 6 provided with the blowing port which blows out cold air above the said exit opening of the said cold air intensive duct. The refrigerator according to claim 8, wherein the opening of the damper is inclined from the vertical surface to the fan side in the refrigerator. The refrigerator according to any one of claims 1 to 9, wherein the refrigeration temperature compartment is provided in front of the fan in the refrigerator, and the refrigeration temperature compartment is provided above the refrigeration temperature compartment. The refrigeration temperature chamber according to any one of claims 1 to 9, wherein the refrigeration temperature chamber is provided in front of the fan in the refrigerator, and the refrigeration temperature chamber is provided above and below the refrigeration temperature chamber, respectively. Refrigerator. The said damper is arrange | positioned so that it may incline in a longitudinal direction, The refrigerator of Claim 1 characterized by the above-mentioned. The refrigerator of claim 12, wherein the damper is inclined at least 6 degrees from a horizontal plane. The said damper is equipped with an opening, the rotating shaft of the vicinity of one side of the said opening, and the opening-and-closing board which cooperates with the rotational motion of the said rotating shaft, The said damper has the said angular position around the said rotating shaft of the said opening-and-closing board, A refrigerator, characterized in that the opening and closing control of the opening is made. The refrigerator according to claim 14, wherein the rotation shaft of the damper is disposed upward. The refrigerator according to claim 14 or 15, wherein the opening and closing plate of the damper is arranged to open toward the cold air duct side. The said damper has an opening, the rotating shaft provided in one side of the said opening, and the opening-and-closing board which cooperates with the rotational motion of the said rotating shaft, The said damper is opened by the rotation angle around the said rotating shaft of the said opening-and-closing board. The opening and closing of the refrigerator is controlled, the refrigerator characterized in that the amount of cold air is controlled by the rotation angle of the opening and closing plate. The refrigerator according to claim 10, wherein a heater in thermal contact with the damper is disposed. A freezing temperature compartment and a refrigeration temperature compartment formed in the refrigerator main body,
A cooler in which cold air for cooling the freezing temperature chamber and the refrigerating temperature chamber is heat-exchanged;
A cooler storage room in which the cooler is installed;
An internal fan for blowing cold air heat-exchanged in the cooler to the freezing temperature chamber and the refrigerating temperature chamber;
A fan cover installed to cover the front of the fan in the refrigerator and having an opening communicating with the freezing temperature chamber or the refrigerating temperature chamber;
A damper installed at an opening of the fan cover to control air blowing;
A spout for ejecting cold air into the refrigeration temperature chamber or the refrigeration temperature chamber located in front of the fan in the refrigerator;
And a duct provided to cover the front of the fan cover to blow cold air from the opening to the jet port. The refrigerator according to claim 19, wherein a space into which an ascending air flow in the defrost of the cooler flows is formed in a lower front of the cooler storage chamber. 21. The duct according to claim 19 or 20, wherein a duct through which return cold air flows after being blown from the cooler accommodating chamber to the refrigerating temperature chamber is installed on the side of the cooler and behind the refrigeration temperature chamber. Refrigerator, characterized in that the vacuum insulating material is provided between the temperature room. The storage compartment partitioned in the refrigerator body,
A cooler in which air for cooling the storage chamber is heat-exchanged,
A cooler chamber in which the cooler is installed,
A blower for blowing air heat-exchanged in the cooler to the storage compartment;
A cold air intensive duct provided in the blower region of the blower and having an opening for guiding the air blown by the blower to the storage chamber,
The cold air intensive duct is provided between the blower support member for supporting the blower and the cover member provided in front of the blower,
And the cover member is integrally installed with the wall surface of the cooler chamber. 23. The apparatus according to claim 22, further comprising: a communication hole communicating with the cooler chamber provided below the blower support member, and a heater provided in the cold air intensive duct;
The heater is a refrigerator, characterized in that provided by extending into the cooler chamber from the communication hole.

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