KR100943566B1 - Refrigerator - Google Patents

Abstract

An object of the present invention is to provide a refrigerator for a long time, while ensuring a food storage volume of a storage compartment with an inexpensive structure.

The refrigerator includes a refrigerator main body 1 having a plurality of storage chambers, a door for opening and closing the front opening of each storage chamber, a low pressure chamber 24 disposed in the storage chamber, and pressure reduction means for depressurizing the inside of the low pressure chamber 24. It is provided. The low pressure chamber 24 includes a low pressure chamber body 40 having an opening 42a for food in and out, and a low pressure chamber door 50 that opens and closes the opening 42a for food. The low-pressure chamber main body 40 extends along a plurality of wall surfaces including a box-shaped resin outer 42 having the food entrance opening 42a and a bottom wall 42d of the outer 42. A metal plate member 44 is provided.

Refrigerator body, low pressure chamber, food opening, low pressure chamber body, exterior, floor wall

Description

Refrigerator {REFRIGERATOR}

The present invention relates to a refrigerator.

As a conventional refrigerator, there is one disclosed in Japanese Patent Laid-Open No. 2004-218924 (Patent Document 1). The refrigerator independently installs a reduced pressure storage space in the storage compartment and discharges the air in the reduced pressure storage space for long-term preservation of the food by storing the air atmosphere in the food storage chamber in a low oxygen state and maintaining the freshness. A vacuum pump is installed in a corner of the storage compartment. The specific structure is described below.

And this reduced pressure storage space is formed with the low pressure chamber comprised from the storage container and lid which store and store the food installed in the temperature switching room. This storage container is mounted between a pair of left and right support frames extending inwardly on the inner surface side of the temperature switching room door, and can be taken out to the outside with the door. The cover is disposed to cover the top opening of the storage container, and is usually suspended to have a gap with respect to the opening of the storage container by the pressing force of the tension spring mounted on the indoor ceiling. The sealing packing is fixed to the periphery of the lower surface of the lid corresponding to the upper part of the storage container, and when the lid covers the opening of the storage container, the gap is eliminated by the sealing packing to seal the inside of the storage container.

The vacuum pump is disposed on the rear surface of the storage container, one end of the suction pipe of the vacuum pump is opened so as to be positioned in the storage container by inserting the cover, and the other end of the suction pipe extends downward from the rear along the upper part of the cover. . The vacuum pump is driven by manual or automatic operation instruction according to the necessity of preserving food under reduced pressure, and is driven after a predetermined time elapses after the temperature switching room door is closed at the time of driving, and is sealed through a suction pipe by driving. The air in the storage container is sucked in to act to depressurize the interior of the storage container. When the pressure in the storage container is within a predetermined range, the control of the vacuum pump is stopped. When the pressure in the storage container becomes higher than the predetermined value by storing or taking out food into the storage container, the vacuum pump is again turned on. By driving, air is sucked in and reduced in pressure until the pressure is below a predetermined value.

The lid opening and closing mechanism is provided in the upper front of the lid. The cover opening / closing mechanism is formed in a rod-shaped body, one end of which is coupled to the upper part of the temperature switching room door, the other end of which is extended to the inside of the room so as to be rotated up and down, and the cover pressing part is installed at the distal end. The lid pressing portion is moved up and down by the engagement movement during the door opening and closing operation. The cover opening / closing mechanism is taken out to the outside with the temperature switching room door at the time of door opening. By rotating the handle of the temperature switching room door, the leak valve provided on the cover is mechanically or electrically interlocked to open the communication hole with the outside. By taking out the temperature switching room door, the lid remains in the room, and only the storage container is taken out to the outside while the upper surface is opened. At the time of the movement of the storage container into the interior of the door by the door closing operation, the tip pressing portion acts to press the upper surface of the lid in conjunction with the movement of the lid opening / closing mechanism inward to close the opening of the storage container.

[Patent Document 1] Japanese Unexamined Patent Application Publication No. 2004-218924

In the refrigerator of the above-mentioned patent document 1, since the pressure reduction storage space which consists of a storage container and a lid is decompressed by the drive of a vacuum pump, high rigidity withstands a pressure reduction force is required for a storage container and a lid. In particular, when the storage container is formed of a resin in order to have a large area subjected to a depressurizing force, there is a problem that it is necessary to thicken the storage container and the food storage volume of the storage chamber is reduced, and furthermore, stainless steel is used. When forming a storage container from metal, such as these, there existed a subject that it became an expensive storage container.

An object of the present invention is to provide a refrigerator which can achieve long-term storage of foods in a low pressure chamber while securing a food storage volume of the low pressure chamber with an inexpensive structure.

In order to achieve the above object, the present invention provides a refrigerator main body having a plurality of storage compartments, a door for opening and closing the front opening of each of the storage compartments, a low pressure chamber disposed in the storage compartment, and a pressure reduction in the low pressure chamber. A refrigerator provided with a decompression means, wherein the low pressure chamber has a low pressure chamber body having an opening for food in and out, and a low pressure chamber door for opening and closing the opening for food in and out. It is provided with the box-shaped resin outer periphery formed, and the metal plate-shaped member extended along the some wall surface containing the bottom wall of the said outer periphery.

A more preferable specific structural example of this invention is as follows.

(l) The plate member has both side walls, a bottom wall and a back wall corresponding to the outer side walls, the bottom wall and the rear wall.

(2) The said outer side forms the said food entrance opening part in the front surface, The said plate-shaped member made the front surface an open surface corresponding to the said food entrance opening part.

(3) A locking portion is formed on both sidewalls of the outer portion, and locking portions are provided on both sidewalls of the plate-shaped member to restrain the upward movement of the plate-shaped member by locking on the locking projection.

(4) a locking projection projecting inwardly is formed on both side walls and the rear wall of the outer edge, and the locking projection is locked on both sidewalls and the rear wall of the plate-like member to move upward of the plate-shaped member. To install a limiting device.

(5) Both sidewalls of the plate-shaped member are formed to have an arc shape and extend upward from an arc-shaped corner portion with the bottom wall of the plate-shaped member, and the bottom wall of the plate-shaped member is the amount of the plate-shaped member. It is formed so as to extend to a center part in circular arc shape from an arc-shaped corner part with a side wall.

(6) A plurality of first protrusions extending left and right across both sidewalls and bottom walls of the plate-like member are formed before and after, extending back and forth on the bottom wall of the plate-shaped member, and slightly higher than the first protrusion. A plurality of second protrusions are formed on the left and right, and the food tray is placed in the plate-like member so as to be placed in and out of the second protrusion.

(7) forming an opening for loading a glass plate on the upper surface of the outer periphery, hermetically loading a transparent glass plate through the annular packing to the glass plate loading opening, and forming a cold air discharge port for blowing cold air above the glass plate; And the plate member having both side walls, bottom walls and back walls corresponding to the outer side walls, the bottom wall and the rear wall.

(8) The decompression means is constituted by a pump, and the plurality of shelves can be removed in a refrigerating chamber constituting the storage compartment, and an ice-making water tank, a food storage case, and the low pressure chamber are installed in a space below the shelf at the lowest stage. Juxtaposed in order, and the pump is disposed in a space behind the food storage case and on the rear side of the low pressure chamber, and the pump connecting portion is provided so as to open the pump connecting portion opposite the plate-shaped member at the rear portion of the outer portion, An air gap is formed between the pump connection portion and the plate member.

Moreover, in order to achieve the said objective, this invention is the refrigerator main body which provided the some storage chamber containing a refrigerator compartment, the door which opens and closes the front opening of each said storage chamber, the low pressure chamber arrange | positioned in the said refrigerator compartment, and the said low pressure In the refrigerator provided with the pressure-reducing means which pressure-reduces the inside of a chamber, The said low pressure chamber has the low pressure chamber main body which has an opening for food in and out, and the low pressure chamber door which opens and closes the said food entrance opening and closing, The said low pressure chamber main body A box-shaped resin outer periphery having the food-entry opening and opening on the upper surface thereof, and a glass plate-loading opening formed on the upper surface thereof, and a transparent glass plate hermetically stacked in the glass-loading opening through annular packing; A metal plate-like member having both sidewalls, bottom walls, and backwalls corresponding to the outer sidewalls, the bottom wall, and the back wall; The clearance gap between a surface and the shelf which divides the inside of the said refrigerating chamber was used as the cold air | gas channel | path which guides cold air forward.

According to the refrigerator of the present invention having such a configuration, it is possible to achieve long-term storage of foods while ensuring the food storage volume of the storage compartment with an inexpensive structure.

EMBODIMENT OF THE INVENTION Hereinafter, the refrigerator of one Embodiment of this invention is demonstrated using drawing.

First, the entire refrigerator will be described with reference to FIGS. 1 is a front view of the refrigerator of the present embodiment, FIG. 2 is a central longitudinal sectional view of the refrigerator of FIG. 1, and FIG. 3 is a front view of the refrigerator main body of FIG.

The refrigerator is provided with the refrigerator main body 1 and the doors 6-10. The refrigerator main body 1 is comprised with the urethane foam heat insulating material 13 and the vacuum heat insulating material (not shown) between the steel outer box 11 and the resin inner box 12, The refrigerator compartment 2 from above. ), The freezer compartments 3 and 4, and the vegetable compartment 5 in order. In other words, the refrigerating chamber 2 is arranged at the top of the refrigerator compartment 2 and the vegetable chamber 5 is arranged at the bottom of the compartment, and between the refrigerating chamber 2 and the vegetable chamber 5 is a freezer compartment partitioned from both chambers. (3, 4) are arrange | positioned. The refrigerating compartment 2 and the vegetable compartment 5 are storage compartments of a refrigeration temperature zone, and the freezing compartments 3 and 4 are storage compartments of a freezing temperature range of 0 degrees C or less (for example, a temperature range of about -20 ° C to -18 ° C). . In addition, the freezing chamber 3 is divided into an ice making chamber 3a and a rapid freezing chamber 3b. These storage chambers 2 to 5 are partitioned by partition walls 33, 34, 35.

On the front surface of the refrigerator main body 1, the doors 6-10 which close the opening part of the front surface of the storage chambers 2-5 are provided. The refrigerating compartment door 6 is a door that closes the front opening of the refrigerating compartment 2, the ice making compartment door 7 is a door which closes the front opening of the ice making chamber 3a, and the quick freezing compartment door 8 is a quenching chamber ( The door closing the front opening of 3b), the freezer compartment door 9 are the doors closing the front opening of the freezing compartment 4, and the vegetable compartment door 10 is the door closing the front opening of the vegetable compartment 5. The refrigerating compartment door 6 is constituted by the doors of both the opening and closing types, and the ice making chamber 3a, the rapid freezing chamber 3b, the freezing chamber 4, and the vegetable chamber 5 are constituted by the pull-out door. And the container in the storage compartment is withdrawn.

The refrigerator body 1 is provided with a refrigeration cycle. This refrigeration cycle is configured by connecting a compressor 14, a condenser (not shown), a capillary tube (not shown), an evaporator 15, and a compressor 14 in that order. The compressor 14 and the condenser are installed in the machine room provided in the lower back of the refrigerator main body 1. As shown in FIG. The evaporator 15 is installed in a cooler chamber provided at the rear of the freezing chambers 3 and 4, and a blowing fan 16 is provided above the evaporator 15 in this cooler chamber.

The cold air cooled by the evaporator 15 is sent to each of the storage chambers of the refrigerating chamber 2, the ice making chamber 3a, the frost freezing chamber 3b, the freezing chamber 4 and the vegetable chamber 5 by the blowing fan 16. . Specifically, the cold air sent by the blower fan 16 is sent to the storage chamber of the refrigerator temperature range of the refrigerator compartment 2 and the vegetable compartment 5 via the damper apparatus which can be opened and closed, and the other part is an ice-making compartment ( 3a), it is sent to the storage chamber of the refrigeration temperature zone of the rapid freezing chamber 3b and the freezing chamber 4.

The cool air sent to the refrigerating chamber 2, the ice making chamber 3a, the rapid freezing chamber 3b, the freezing chamber 4, and the vegetable chamber 5 by the blowing fan 16 cools each storage chamber, It is returned to the cooler chamber through the cold air return passage. Thus, the refrigerator of this embodiment has the circulation structure of cold air, and keeps each storage chamber 2-5 at an appropriate temperature.

In the refrigerating chamber 2, the multi-stage shelf 17-20 comprised by the transparent resin plate is provided so that removal is possible. The lowermost shelf 20 is provided in contact with the rear surface and both side surfaces of the inner box 12, and partitions the lowermost space 21 which is the lower space from the upper space. In addition, inside each refrigerating compartment door 6, a plurality of stage door pockets 25 to 27 are provided, and these door pockets 25 to 27 protrude into the refrigerating compartment 2 with the refrigerating compartment door 6 closed. It is installed to

Next, arrangement | positioning of the apparatus in the lowest space 21 of the refrigerating chamber 2 is demonstrated, referring FIGS. 4 is a front view of the refrigerator compartment part of the refrigerator main body of FIG. 1, and FIG. 5 is a plan view of the lowest space part of the refrigerator compartment of FIG.

In the lowermost space 21, the storage case 23 for accommodating food, such as an ice-making water tank 22 which is a water supply tank for supplying ice-making water to the ice making pan of the ice-making chamber 3a, and a dessert, in order from the left side, A low pressure chamber 24 is installed to maintain the freshness of the food and to preserve the food for a long time by depressurizing the room. The low pressure chamber 24 has a width narrower than that of the refrigerating chamber 2 and is disposed adjacent to the side surface of the refrigerating chamber 2.

Thus, since the low pressure chamber 24 is arrange | positioned in the lowermost space 21 of the refrigerator compartment 2 arrange | positioned on the freezer compartment 3, 4 of the refrigerator, and the vegetable compartment 5, it is easy to use.

The ice making tank 22 and the storage case 23 are arranged behind the refrigerating compartment door 6 on the left side. Thereby, the ice-making water tank 22 and the storage case 23 can be taken out only by opening the refrigerator compartment door 6 of the left side. Moreover, the low pressure chamber 24 is arrange | positioned behind the refrigerator compartment door 6 of the right side. Thereby, the food tray 60 (refer FIG. 6) of the low pressure chamber 24 can be taken out only by opening the refrigerator compartment door 6 of the right side. In addition, the ice-making water tank 22 and the storage case 23 are located behind the lowermost door pocket 27 of the left side refrigerator compartment door 6, and the low pressure chamber 24 has the right side refrigerator compartment door 6 It is located at the rear of the door pocket 27 at the lowermost end.

The ice-making water pump 28 is provided in the back of the ice-making tank 22, as shown to FIG. 5 and FIG. In the space behind the storage case 23 and on the rear side of the low pressure chamber 24, as shown in FIGS. 5 and 6, a vacuum pump that is an example of pressure reducing means for depressurizing the low pressure chamber 24 ( 29) is arranged. Thereby, the vacuum pump 29 can easily connect the conduit 29a (refer FIG. 9) to the pump connection part 42i (refer FIG. 14) provided in the side of the low pressure chamber 24, and also the storage case ( 23) can be easily maintained from the front by taking out.

Next, with reference to FIGS. 6-9, the basic structure of the low pressure chamber 24 and its cooling method are demonstrated. Fig. 6 is a sectional perspective view of the lowermost space portion of the refrigerating compartment of Fig. 4, Fig. 7 is a front view of the rear panel of the refrigerating compartment of Fig. 4, Fig. 8 is a longitudinal sectional view of the vicinity of the low pressure chamber of Fig. 4, and Fig. 9 is of Fig. 4 It is a perspective view of the low pressure chamber of a refrigerator compartment.

The low pressure chamber 24 stores a box-shaped low pressure chamber body 40 having an opening for food in and out, a low pressure chamber door 50 for opening and closing a food entrance opening of the low pressure chamber body 40, and food. The food tray 60 which enters and exits the low pressure chamber door 50 is comprised. The low-pressure space 41 in which the space surrounded by the low-pressure chamber door 50 and the food tray 60 is decompressed by closing the food-out opening 42a of the low-pressure chamber door 50 in the low-pressure chamber main body 40. It is formed as. The food tray 60 is attached to the back side of the low pressure chamber door 50, and can move back and forth with movement of the low pressure chamber door 50. As shown in FIG.

The low pressure chamber main body 40 is made of a resin outer shell 42 having excellent chemical resistance, impact resistance and moldability, a glass plate 43 (for example, tempered glass) made of transparent tempered glass, and a metal such as steel sheet. The plate member 44 and the resin door engaging member 48 are provided.

The outer periphery 42 has the basic shape of a substantially rectangular parallelepiped, the food-entry opening part 42a is formed in the front surface, and the glass plate loading opening 42b is formed in the upper surface. The outer reinforcing ribs 42f protrude from the outer surfaces of the side walls 42c, the bottom wall 42d, and the rear wall 42e constituting the outer side 42 so as to increase the strength of the outer side 42. It is.

The glass plate 43 is hermetically mounted to the glass plate stacking opening 42b via an annular packing 45, and forms the upper wall of the low pressure chamber main body 40. This glass plate 43 is provided with the strength which prevents the opening part 42b for glass plate loading from being deform | transformed inward by pressure reduction force. Moreover, the inside of the low pressure chamber 24 can be viewed by providing the transparent glass plate 43 on the upper surface of the outer periphery 42.

The plate-shaped member 44 has both side walls 42c of the outer side 42c to prevent deformation of both side walls 42c and the bottom wall 42d and the back wall 42e of the outer side 42 due to the decompression force. ) And bottom wall 42d and rear wall 42e.

The low-pressure chamber main body 40 has a box-shaped resin outer 42 having the food entrance opening 42a formed on its front face, and both sidewalls 42c, bottom wall 42d, and the ship 42 of the outer 42. Since it has the metal plate-shaped member 44 extended along the surface wall 42e, compared with the case where the whole outer part 42 is formed with a metal plate, it can be set as a cheap structure. In addition, the outer structure 42 can be made of resin, whereby the mounting structure and the like can be simplified.

As shown in Figs. 9 and 27, the door engaging member 48 is provided on the upper surface of the food in / out opening 42a. The door engaging member 48 includes an inverted U-shaped portion 48a accommodated in the recess 42a ₁ formed on the upper surface of the food-entry opening 42a and a door extending forward from the inverted U-shaped portion 48a. The engaging claw 48b is integrally molded. The door engaging hook portion 48b is provided with a width substantially the same as that of the door handle 52, and is coupled between the upper portion of the door handle 52 and the front and rear positioning upper end portion 51e. And the door handle 52 is comprised so that engagement may be released by rotating about the hinge part 52a.

The rear panel 30 is provided on the rear surface of the refrigerating chamber 2 to form a passage through which the cold air supplied from the blowing fan 16 passes. The rear panel 30 has a cold air discharge port (first cold air discharge port) 31 for refrigerating chamber cooling that supplies cold air to the refrigerating chamber 2 and a low pressure chamber cooling for supplying cold air to the lowermost space 21 of the refrigerating chamber 2. The cold air discharge port (second cold air discharge port) 32 and the cold air return port 33 are formed. The cold air | gas return port 33 is located in the side near the side surface of the refrigerating chamber 2 from the back back of the low pressure chamber 24, and is provided.

The cold air discharge port 32 is provided toward a gap between the upper surface of the low pressure chamber 24 and the lower surface of the shelf 20. The cold air discharged from the cold air discharge port 32 flows through the gap between the upper surface of the low pressure chamber 24 and the lower surface of the shelf 20 as the cold air passage 37 to cool the low pressure chamber 24 from the upper surface. Therefore, the inside of the low pressure chamber 24 is indirectly cooled.

Here, the low pressure chamber 24 is disposed close to the right side surface of the refrigerating chamber 2 to eliminate the gap on the right side of the low pressure chamber 24 and at the left end of the upper surface of the low pressure chamber 24 (not shown) Since a partition wall) is provided to eliminate the gap between the left side of the low pressure chamber 24, the cold air discharged from the cold air discharge port 32 is formed to cover the upper surface of the low pressure chamber 24 without being classified into left and right sides of the low pressure chamber 24. Flow. Thereby, the amount of cold air which cools the upper surface of the low pressure chamber 24 can be increased, and the inside of the low pressure chamber 24 can be cooled rapidly. The cold air which cooled the upper surface of the low pressure chamber 24 is sucked into the cold air return port 33 through the left side of the low pressure chamber 24 from the front of the low pressure chamber 24, and is returned to the cooler chamber through the cold air return passage. . Since the cold air | gas return port 33 is located in the side close to the side surface of the refrigerating chamber 2 from the back rear of the low pressure chamber 24, cold air contacts the back surface and the left side of the low pressure chamber 24, and cools it.

In this manner, the low pressure chamber 24 is indirectly cooled by passing cold air through the outside. In addition, the cold air cooled in the entire refrigerating chamber 2 is sucked into the cold air return port 33.

The cold air return port 33 is formed in the part of the back panel 30 which opposes the back wall 42e of the outer side 42. This back wall 42e is formed inclined so that the bottom wall side may be forward. Thereby, sufficient return air path can be ensured between the back wall 42e and the back panel 30. FIG. Moreover, the back panel 30 has a part which inclines and protrudes corresponding to the inclination of the back wall 42e, and forms the cold air return port 33 in this part. As a result, the ventilation area of the cold air return port 33 can be sufficiently secured.

Next, the outline 42 will be described in detail with reference to FIGS. 10 to 14. FIG. 10 is a perspective view of an outer side of the low pressure chamber of FIG. 6 viewed from above, and FIG. 11 is a perspective view of an outer side of FIG. 10 viewed from below, FIG. 12 is a sectional view of an outline of FIG. 10, and FIG. 14 is a perspective view of the outer side of FIG. 10 seen from the upper left side.

The outer side 42 is an assembly hook 42g provided in four corners of the bottom surface of the bottom wall 42d, the locking projection 42h provided on both side walls 42c and the rear wall 42e, and the side walls. The pump connection part 42i and the pressure switch connection part 42j provided in 42c are provided.

The pump connection part 42i has a channel | path which communicates the inside and the exterior of the outer side 42, and is connected with the vacuum pump 29 via the conduit 29a (refer FIG. 9). The inside of the outer 42 is depressurized by the vacuum pump 29 via the pump connection 42i. The pump connection part 42i is provided in the rear part of the side wall of the outer side 42 so that it may open to oppose the plate-shaped member 44. As shown in FIG. A space | gap is formed between the pump connection part 42i and the plate-shaped member 44, and the pressure reduction inside the outer side 42 can be performed easily.

The pressure switch connection part 42j has a channel | path which communicates the inside and the exterior of the outer side 42, and is connected with the pressure switch. The pressure inside the outer 42 is detected by the pressure switch via the pressure switch connecting portion 42j.

Next, with reference to FIG. 15, the glass plate 43 is demonstrated concretely. FIG. 15 is an exploded perspective view showing the glass plate 43 and the annular packing 45 forming the upper wall of the low pressure chamber body 40 of FIG.

The glass plate 43 is formed of a transparent rectangular flat plate and has sufficient rigidity and strength. The annular packing 45 has the recessed groove 45a which inserts the glass plate 43 in the inner peripheral surface, and has the elasticity suitable for maintaining the airtight between the glass plate 43 and the glass plate loading opening 42b.

Next, the plate member 44 and its assembly will be described in detail with reference to FIGS. 16 to 18. FIG. 16 is a perspective view of the plate member of the low pressure chamber of FIG. 6, FIG. 17 is a perspective view of the plate member of FIG. 16 assembled to the outside, and FIG. 18 is a sectional perspective view of FIG.

The plate-like member 44 has both side walls 44a, bottom walls 44b, and back walls 44c corresponding to both side walls 42c, bottom wall 42d, and back wall 42e of the outer perimeter 42. Have Both side walls 44a of the plate-like member 44 are formed so as to extend upward from the arc-shaped corner portion with the bottom wall 44b with a slightly arc-shaped shape. The bottom wall 44b of the plate member 44 is formed so as to extend from the arced corners with the both side walls 44a to the center with a slight arc shape. Thereby, even if the rigidity of both side wall 44a and the bottom wall 44b is raised and plate | board thickness of the plate-shaped member 44 is reduced, sufficient strength can be obtained and the plate-shaped member 44 can be made cheap. At the same time, the capacity can be increased.

Moreover, the plate-shaped member 44 has the 1st convex part 44d extended left and right across both side wall 44a and the bottom wall 44b, and the 2nd convex part extended back and forth to the bottom wall 44b ( 44e and the convex part 44f formed in the back wall 44c. By combining these plural types of convex portions 44d to 44e, the rigidity of both side walls 44a, bottom wall 44b and back wall 44c is increased, and even if the plate thickness of the plate member 44 is made thin. Sufficient strength can be obtained, and the plate member 44 can be made inexpensive.

The upper end portions of the both side walls 44a and the back wall 44c of the plate-like member 44 correspond to the locking projections 42h formed on the both side walls 42c and the back wall 42e of the outer 42. A locking portion 44g is formed.

In order to assemble the plate-shaped member 44 to the outer side 42, the plate-shaped member 44 is inserted into the outer side 42 through the food-entry opening 42a or the glass plate loading opening 42b, Each locking portion 44g of the member 44 is locked to each locking projection 42h of the outer portion 42. Since the plate-shaped member 44 is limited to the movement of the upper side walls 44a and the rear wall 44c in the state assembled to the outer side 42, the amount of the outer side 42 formed by resin under pressure reduction force. Even if the side wall 42c, the bottom wall 42d, and the back wall 42e are deformed inward, the deformation is caused by the side wall 44a, the bottom wall 44b, and the back wall 44c of the plate-like member 44. Can be suppressed.

19 to 22, a rail 46 for smoothly entering and exiting the food tray 60 may be provided on the second convex portion 44e. At that time, the coupling part corresponding to the rail 46 is provided in the lower surface of the food tray 60. As shown in FIG. In addition, the gap cover (covering the gap between the sidewalls 44a of the plate-shaped member 44 and the sidewalls 42c of the outer portion 42 and the latching portion between the locking portion 44g and the locking projection 42h, etc.) 47) may be provided. Fig. 19 is a perspective view showing a modification of Fig. 16 in which a rail is mounted on a plate-like member, Fig. 20 is a perspective view of a state in which a gap cover is assembled by assembling the plate-shaped member of Fig. 19 to the outside, and Fig. 21 is a cross-sectional view of Fig. 20. 22 is a sectional front view of FIG.

Next, the low pressure chamber door 50 will be described with reference to FIGS. 8, 9, and 23 to 30. FIG. 23 is a perspective view of the low pressure chamber door of FIG. 9, FIG. 24 is a perspective view of the low pressure chamber door with the handle 52 of FIG. 23 removed, FIG. 25 is a rear perspective view of the low pressure chamber door of FIG. Fig. 27 is an enlarged cross sectional view of the lower pressure chamber of Fig. 26, Fig. 28 is an enlarged cross sectional view of the lower corner of the low pressure chamber of Fig. 26, Fig. 29 is an enlarged cross sectional view of the pressure relief valve of Fig. 23, 30 is an enlarged cross-sectional view of the indicator portion of FIG.

The low pressure chamber door 50 includes a resin door body 51, a resin door handle 52, a pressure release valve 53, a rubber indicator 54, and a rubber gasket 55. Doing. In addition, the low pressure chamber door 50 is connected to the link mechanism 70 and is rotatable and movable back and forth.

The door main body 51 has an outline substantially the same as the front face of the outline 42, and includes a handle recess 51a, a door reinforcing rib 51b constituting the reinforcement protrusion, and a handle hinge support 51c (Figs. 23 to 23). 27), the link mechanism connection part 51d, the front-back positioning upper end 51e, the front-back positioning lower end 51f, etc. are provided.

The handle recess 51a is formed by recessing the center upper portion of the door main body 51 toward the back side. The handle recess 51a has a function of causing a finger to be caught by the door handle 52 even when the door handle 52 is disposed without protruding forward from the door body 51, and the handle mounting portion of the door body 51. It has a function to increase the strength of the.

The door reinforcement rib 51b is formed to protrude from the rear surface at the back center portion of the door main body 51, and includes an outer frame rib composed of an upper side rib, a lower side rib, and both side ribs (vertical ribs), and a plurality of vertical ribs 51b. ₂ ) This door reinforcement rib 51b is set slightly smaller than the opening height dimension of the food-entry opening-and-closing opening 42a, and is centered in the food opening-and-opening 42a with the door main body 51 closed. Is inserted into When the low pressure chamber door 50 is closed and the pressure inside the low pressure chamber 24 is reduced by this door reinforcement rib 51b, the deformation | transformation of the food entrance opening and exit 42a can be suppressed. That is, the door reinforcement rib 51b acts as a support column of the food-entry opening part 42a. In particular, since the deformation of the center portion of the food opening / output opening 42a can be suppressed over a predetermined range by the upper side ribs and the lower side ribs of the outer frame ribs, it is possible to increase the pressure reducing force of the low pressure chamber 24.

In addition, since the lower end rib 51b ₃ at the lower end of the door reinforcing rib 51b extends up to the front end of the plate member 44, the deformation of the food-entry opening 42a is prevented from the plate member 44. Through this, the door reinforcement ribs 51b can be suppressed more reliably. In addition, the upper rib 51b ₁ at the upper end of the door reinforcing rib 51b extends to the lower side of the glass plate 43.

In Fig. 27, the handle hinge support 51c protrudes from both sides of the upper surface in the handle recess 51a, and is constituted by a pair of left and right. The hinge portion 52a of the door handle 52 is rotatably coupled to the handle hinge support 51c.

The link mechanism connection parts 51d ₁ and 51d ₂ are provided in a pair of upper and lower sides at one side end portion (end of the side close to the side surface of the refrigerating chamber 2) of the door body 51, and the upper and lower links of the link mechanism 70 are provided. The sides 70a and 70b are rotatably connected. The part of the door main body 51 located between the upper and lower link mechanism connecting portions 51d ₁ and 51d ₂ constitutes the link mechanism 70 front link edge 70c. The door main body 51 can rotate back and forth using the lower link mechanism connection part 51d ₂ and the rail connection part 51d ₃ as a rotation center. Further, the rails 71 are rotatably connected is shown in Fig. 31 the rail connecting portion (51d _3), rail 71 is configured to be drawn back and forth like the link side (70b).

The gasket 55 is an outer circumferential sealing member of the door that maintains the airtightness between the low pressure chamber door 50 and the low pressure chamber main body 40, and is provided in an annular shape on the back of the door main body 51, and the food of the outer 42 is provided. The entrance / exit opening 42a is contacted over the entire circumference.

Before and after positioning an upper end (51e) is rotatable back and forth by a mechanism connecting the lower link (51d ₂₎ and the rail connecting portion (51d ₃₎ to the center of rotation. When the front and rear positioning upper end portion 51e closes the low pressure chamber door 50, the opening and closing portion 42a for food entering and exiting is rotated upward and backward with the lower link mechanism connecting portion 51d ₂ as the rotation center. The door engaging member 48 (see Fig. 31) protruding upward from the upper portion of the door is elastically deformed.

On the other hand, determining front and rear positions the lower end (51f), it is possible before and after the rotation by the link mechanism of the lower connecting portion (51d ₂₎ and the rail connecting portion (51d ₃₎ to the center of rotation. The front and rear position the lower end (51f) is, upon closing the low-pressure chamber door 50, and the lower side link mechanism connecting portion (51d ₂₎ and the rail connecting portion (51d ₃₎ to the center of rotation by the rotation in the forward direction downward, It is inserted into and locked in the front and rear positioning groove 34a (see FIG. 34) formed on the upper surface of the partition wall 34.

By positioning of the front and rear positioning upper end 51e and the front and rear positioning lower end 51f, the gasket 55 is pressed against the front face of the opening and closing portion 42a for food in and out, and the outer surface 42 and the door body ( 51) Confidentiality is ensured. And the inside of the low pressure chamber 24 is pressure-reduced, and the low pressure chamber door 50 will be in the state absorbed by the low pressure chamber main body 40. FIG.

The door handle 52 is for opening / closing the low pressure chamber door 50, entering / exiting the food tray 60, operating the pressure release valve 53, and the like. Installed in This door handle 52 is arrange | positioned so that the upper part of the handle recessed part 51a may be provided, and it is provided in the door main body 51 so that rotation is possible back and forth. Specifically, the door handle 52 is held by the door main body 51 by the hinge portion 52a provided on the rear surface thereof being rotatably coupled to the handle hinge support 51c.

The pressure release valve 53 is for releasing the depressurized state inside the low pressure chamber 24 and is located near the right end of the door handle 52 and is provided on the rear side of the door handle 52. As shown in FIG. 29, this pressure relief valve 53 is integrated in the valve seat 53a made of rubber attached to the through-hole 51h of the door main body 51, and the door handle 52 in the back surface. It is formed of the valve body 53b which opens and closes the valve seat 53a. In addition, the pressure relief valve 53 is surrounded by the cover 51j. For this reason, the liquid leakage of the food to the pressure relief valve 53 can be suppressed. Moreover, the shade 51i which has a notch at the lower part is provided in the low pressure chamber side of the through-hole 51h, and it suppresses that liquid enters a through-hole.

By pressing the upper part of the door handle 52 when closing the low pressure chamber door 50, as shown in FIG. 29 (a), the valve body 53b is brought into close contact with the valve seat 53a and the valve is closed. The sheet 53a can be closed. Then, the lower portion of the door handle 52 is pulled out when the low pressure chamber door 50 is opened, and as shown in Fig. 29B, the upper end of the door handle 52 is supported by the valve body ( The valve seat 53a can be opened by rotating 53b). In this way, by the simple operation of operating the door handle 52, the depressurized state in the low pressure chamber 24 can be released or the low pressure chamber 24 can be sealed.

The indicator 54 is for displaying the pressure state inside the low pressure chamber 24. As shown in FIG. 9, the indicator 54 is located near the left end of the door handle 52 to allow the door main body to be visible from the front surface. 51). This indicator 54 is comprised by the cap which has elasticity, as shown in FIG. 30, and is attached to the door main body 51 so that the through-hole 51h of the door main body 51 may be covered from a front surface, It is arrange | positioned in the through-hole 52b of the door handle 52, and the head part of the indicator 54 can be visually confirmed from the front. The internal space of the indicator 54 communicates with the inside of the low pressure chamber 24 through the through hole 51h.

When the inside of the low pressure chamber 24 is not depressurized, as shown in FIG. 30 (a), the head portion of the indicator 54 protrudes roundly, so that the decompression of the low pressure chamber 24 is released. have. In addition, when the inside of the low pressure chamber 24 is depressurized, since the head part of the indicator 54 becomes concave, as shown to FIG. 30 (b), it can be confirmed that the inside of the low pressure chamber 24 is depressurized. . Thus, the pressure reduction state of the low pressure chamber 24 can be confirmed with a simple structure, and it can confirm easily when operating the door handle 52. As shown in FIG.

The low pressure chamber door 50 is detachably connected to the link mechanism 70, and the low pressure chamber door 50 with the gasket 55 and the valve body 53b attached thereto is removed from the link mechanism 70. The low pressure chamber door 50 can be serviced.

Next, the link mechanism 70 will be described with reference to FIGS. 9 and 31. FIG. 31 is a perspective view of the low pressure chamber door of FIG. 9 with the front pulled out; FIG.

The link mechanism 70 is arrange | positioned between the side surface of the adjacent refrigerator compartment 2 and the side surface of the low pressure chamber main body 40, and connects four link edges 70a, 70b, 70c, 70d by rotatable connection. Consists of. The link mechanism 70 is held to rotate to a predetermined angle when the low pressure chamber door 50 is pulled forward. The predetermined angle is such that even when the low pressure chamber door 50 is opened when the refrigerating chamber door 6 is closed, the low pressure chamber door 50 is rotated by the door pocket 27 of the refrigerating chamber door 6. It is the angle which can approach the main body 40, Preferably it is the inclination angle 30 degree or more with respect to horizontal, Most preferably, it is 40 degrees back and forth. Moreover, by rotating to a predetermined angle, there exists an effect that a user becomes easy to see the food in the low pressure chamber 24 compared with the case which does not rotate. In addition, you may determine the position of the door pocket 27 so that the low pressure chamber door 50 may be rotated with the door pocket 27 to close the low pressure chamber main body 40.

As described above, the upper link side 70a and the lower link side 70b are rotatably connected to two upper and lower link mechanism connecting portions 51d ₁ and 51d ₂ of the door body 51, respectively. The front link edge 70c is connected to the two link mechanism connecting portions 51d ₁ and 51d ₂ . The structure of the link mechanism 70 is simplified by the part of the door main body 51 also serving as the front link edge 70c. And the door main body 51 and the front link edge 70c are comprised so that attachment and detachment are possible, The door main body 51 is removed from the link mechanism 70, and maintenance, such as cleaning, is possible. The four link sides 70a to 70d have the same length as the upper link side 70a and the lower link side 70b, and the front link side 70c and the rear link side 70d have the same length.

The upper support part 42k for links and the lower support part 42l for links are formed in the both sides of the outer side 42, respectively. The upper support part 42k for links is comprised from the groove which slides back and forth by fitting the connection part of the upper link side 70a and the rear link side 70d. The lower support part 42l for links is comprised by the groove | channel which slides back and forth by fitting the connection part of the lower link edge 70b and the rear link edge 70d. The lower support part 42l for links is located below the upper support part 42k for links, and is extended back and forth along the upper support part 42k for links. The upper support 42k for links has an inclined portion that is lowered forward from its rear end. By this inclination part, the vertical space | interval of the upper support part 42k for links and the lower support part 42l for links becomes narrow as it goes forward.

Next, with reference to FIGS. 8, 32 and 33, the food tray 60 and its assembling method will be described. 32 is a perspective view of the food tray 60 of FIG. 8, and FIG. 33 is a cross-sectional perspective view of the food tray 60 of FIG. 32 assembled into a low pressure chamber body.

The food tray 60 has the bottom wall 60a, the both side walls 60b, the front wall 60c, and the back wall 60d, as shown in FIG. In the front wall 60c, the recessed part 60e which avoids the door reinforcement rib 51b is formed. By this recessed part 60e, the strength of the food tray 60 can be ensured. On both lower end portions of the recessed part 60e, as shown in Fig. 25, door fitting hooks 60f held by the protrusion 51g on the back side of the door main body 51 are formed. The door fitting hook 60f is formed in the semicylindrical shape in which the lower surface was opened.

33, the food tray 60 is inserted in the low pressure chamber main body 40 through the food-entry opening-and-opening 42a, and is arrange | positioned on the plate-shaped member 44. As shown in FIG.

In the state shown in Fig. 33, the low pressure chamber door 50 is disposed on the front face of the food inlet / outlet 42a, and the protrusion 51g formed at the lower end of the door body 51 is placed in the door of the food tray 60. Fit into fitting hook (60f). As a result, the food tray 60 is movable together with the door body 51.

Next, a method of assembling the low pressure chamber 24 to the partition wall 34 will be described with reference to FIGS. 34 to 37. 34 is a sectional perspective view of the partition wall 34 in which the low pressure chamber 24 is not provided; FIG. 35 is a sectional perspective view of the partition wall 34 in the state where the low pressure chamber 24 is installed; 36 is a sectional front view of the low pressure chamber 24 immediately before assembling the low pressure chamber 24 in the partition wall 34, and FIG. 37 is a sectional front view of the low pressure chamber 24 in the partition wall 34 assembled. 36, the plate member 44 is omitted.

On the upper surface of the partition wall 34, front and rear positioning grooves 34a and low pressure chamber fitting hooks 34b are formed. The front and rear positioning groove 34a is for positioning the front and rear of the door main body 51, and is formed extending in a straight line from side to side from the boundary of the portion where the storage case 23 is disposed. The low pressure chamber fitting claws 34b are for positioning the front, rear, left, and right sides of the perimeter 42, and at four locations on the upper surface of the partition wall 34 so as to correspond to the assembly claws 42g of the perimeter 42. Formed.

First, the low pressure chamber 24 assembled as shown in FIG. 9 is placed next to the left side of the low pressure chamber fitting hook 34b as shown in FIG. 36, and is loaded on the partition wall 34. As shown in FIG. Subsequently, the low pressure chamber 24 is moved to the right, and as shown in FIG. 37, the assembly hook 42g is inserted into the low pressure chamber fitting hook 34b, and the outline 42 of the low pressure chamber 24 is provided. ) Before and after positioning. Thus, since the low pressure chamber 24 can be positioned on the partition wall 34 and moved laterally, positioning of the front, rear, left, and right sides is excellent, and the assemblability is excellent. Moreover, the partition wall 34 puts a urethane heat insulating material and raises strength.

The reason for positioning by moving the low pressure chamber 24 from left to right is that the front and rear positioning lower end portions 51f of the door main body 51 in Fig. 23 fit the front and rear positioning grooves 34a. It is because it is necessary to determine the position of the front-back direction appropriately. Thereby, positioning of the front-back direction is determined reliably. As a result, the upper part of the door main body 51 is engaged with the door engaging member 48 of FIG. 9, and the lower part of the door main body 51 is positioned by the front and rear positioning lower end portion 51f and the front and rear positioning groove 34a, and the door body 51 ) Can be reliably closed in the low pressure chamber 24.

Subsequently, a vacuum pump 29 is provided on the rear side of the low pressure chamber 24, and the conduit 29a of the vacuum pump 29 is connected to the pump connection portion 42i of the low pressure chamber 24. The pressure reduction of the low pressure chamber 24 is made possible. In addition, the exhaust port of the vacuum pump 29 is arrange | positioned so that it may discharge to the cold air return port 33 in a refrigerating chamber. As a result, since the drain dripped from the evaporator 15 is discharged in the flow direction, even if impurities are mixed in the air from the exhaust port, the drain is discharged toward the drain.

Subsequently, an ice making pump 28 and an ice making tank 22 are provided, and a storage case 23 is provided between the ice making tank 22 and the low pressure chamber 24. In this state, the shelf 20 is installed and the lowermost space 21 is formed. The storage case 23 may be installed after the shelf 20 is installed.

Next, the operation of the low pressure chamber 24 will be described with reference to FIGS. 9 and 31.

When opening the door main body 51, in the state of FIG. 9, a finger is put in the handle recessed part 51a, and the lower part of the door handle 52 is pulled, and the pressure relief valve of FIGS. 53 is operated to release the depressurized state of the low pressure chamber 24. Therefore, even if the user is not particularly aware, the decompression state of the low pressure chamber 24 can be released for the first time of the opening operation of the door main body 51.

In addition, by pulling the door handle 52, the upper link side 70a is pulled forward through the door main body 51, and the connection portion between the upper link side 70a and the rear link side 70d is the upper side for the link. It moves forward and downward along the inclination of the support part 42k, and the door main body 51 will be inclined. As a result, the front and rear positioning lower end portions 51f of the door main body 51 of FIG. 23 are opened from the front and rear positioning grooves 34a of the partition wall 34 of FIG. 34, and the front door 51 is pulled out. It becomes possible.

In addition, since the upper link side 70a is pulled forward through the door body 51 by pulling the door handle 52, the upper main link side 70a is disposed close to the door main body of the low pressure chamber 24. The door switch 83 detecting the open / close state of the 51 detects the open state of the door main body 51 of the low pressure chamber 24.

Further, by pulling the door handle 52, the door body 51 is moved forward together with the link mechanism 70 and the food tray 60 in an inclined state, and they are drawn out as shown in FIG. The upper surface of the food tray 60 is opened.

These operations may be a single operation for pulling the door handle 52, and a series of operations of each device can be performed, and the ease of use is good.

In addition, when closing the door main body 51, by pressing the upper part of the door handle 52 in the state of FIG. 31, the operation opposite to the opening operation mentioned above is performed, and the door switch 83 is made into the low pressure chamber ( The closed state of the door main body 51 of 24 is detected.

Next, the control device 80 will be described with reference to FIGS. 38 to 40. FIG. 38 is a view for explaining the input / output between the microcomputer, which is the control device 80 according to the present embodiment, and respective devices; FIG. 39 is a flowchart for explaining the control operation of the control device in FIG. 38; FIG. Is a flowchart of the operation.

As shown in FIG. 38, the control apparatus 80 is arrange | positioned at the front surface of the refrigerator compartment door 6, and the refrigerator compartment door which detects the opening / closing state of the operation switch 81 and the refrigerator compartment door 6 operated by a user. The door switch 83 which detects the open / closed state of the switch 82, the door main body 51 of the low pressure chamber 24, the pressure switch 84 which detects the internal pressure of the low pressure chamber 24, and the refrigerating chamber 2 In response to the operation / detection signal of the refrigerating chamber temperature sensor 85 for detecting the temperature, predetermined processing is performed, and the vacuum pump 29 is controlled based on the result.

As shown in Fig. 39, when the operation of the refrigerator is started (step S1), the first predetermined time (A time) and the second predetermined time (B time) are cleared (step S2), so that the low pressure chamber 24 The pressure value P for determining the pressure is set to 1.0 (atmospheric pressure) (step S3). Here, A time is a waiting time for judging that the low pressure chamber 24 is not operated for a predetermined time, and B time is until the operation of the vacuum pump 29 is started after the pressure switch 84 is turned off. Waiting time.

It is determined whether the pressure value P is 1.0 or 0.7 (step S4). Here, the pressure value P of 0.7 means the pressure at the time of the low pressure chamber 24 depressurizing to predetermined pressure.

When it is determined in step S4 that the pressure value P is 1.0, it is assumed that the low pressure chamber 24 is at atmospheric pressure, and the process shifts to the case where the low pressure chamber 24 is decompressed.

In the process for this decompression operation, first, the open / closed state of the low pressure chamber door 50 is determined by the low pressure chamber door switch 83 (step S11). If it is determined in step S11 that the low pressure chamber door 50 is in an open state, since it is not necessary to enter the decompression operation of the low pressure chamber 24, time A is cleared (step S12), and the flow returns to step S11 to return to the low pressure chamber. The determination of the open / closed state of the door 50 is continued, and the low pressure chamber door 50 is waited to be in the closed state. Here, A time is a waiting time for judging that the low pressure chamber 24 has become inoperable to some extent.

When it is determined in step S11 that the low pressure chamber door 50 is in the closed state, it waits until A time elapses (step S13). Initially, the purpose of putting the low pressure chamber 24 in a reduced pressure state is to maintain the freshness of the food and to preserve it for a long time. For example, when the user repeatedly opens and closes the low pressure chamber door 50 for a meal preparation, the pressure reduction operation is performed every time. It is effective to provide A time to maintain the life of the vacuum pump 29 long and avoid frequent operation.

And when A time has passed, the open / closed state of the low pressure chamber door 50 is determined by the low pressure chamber door switch 83 (step S14). When it is determined in this step S14 that the low pressure chamber door 50 is in an open state, since it is not necessary to enter into the decompression operation of the low pressure chamber 24, it returns to step S12, and the low pressure chamber door 50 becomes a closed state. Wait for that.

When it is determined in step S14 that the low pressure chamber door 50 is in the closed state, the open / close state of the refrigerating chamber door 6 is determined by the refrigerating chamber door switch 82 (step S15). When it is determined in this step S15 that the refrigerating compartment door 6 is in an open state, the operation of the vacuum pump 29 is stopped (step S16), and the flow returns to step S14.

When it is determined in step S15 that the refrigerating compartment door 6 is closed, the refrigerating compartment temperature sensor 85 determines whether the temperature of the refrigerating compartment 2 is a high temperature (for example, 8 ° C or more) or a low temperature (for example, , Less than 8 ° C.) (step S17). When it is determined in step S17 that the temperature of the refrigerating chamber 2 is a high temperature, the process returns to step S16. That is, when the temperature of the refrigerating chamber 2 is high temperature, the decompression operation by the vacuum pump 29 cannot be started.

When it is determined in step S17 that the temperature of the refrigerating chamber 2 is low, the operation of the vacuum pump 29 is performed (step S18). Thus, before starting operation of the vacuum pump 29, each state of the low pressure chamber door 50, the refrigerating chamber door 6, and the refrigerating chamber 2 is detected, and based on the result, the vacuum pump 29 Since the operation is started, the vacuum pump 29 can be operated only when it is necessary to depressurize the low pressure chamber 24.

When the operation of the vacuum pump 29 is started in step S18, the pressure switch 84 indicates whether the pressure in the low pressure chamber 24 is a predetermined pressure (for example, 0.8 atm or more) or less than a predetermined pressure (for example For example, it is determined whether it is less than 0.8 atmosphere (step S19). The predetermined pressure (0.8 atm) is a pressure between the upper pressure [1.0 atm (atmospheric pressure)] and the lower pressure (0.7 atm) used for the determination as the pressure value P, It is close to the pressure below.

When it is determined in step S19 that the pressure in the low pressure chamber 24 is 0.8 atm or more, the integrated value of the operation time (d hours) of the vacuum pump 29 is cleared (step S20), and the process returns to step S14. Operation of the vacuum pump 29 is continued.

When it is determined in step S19 that the pressure in the low pressure chamber 24 is less than 0.8 atm, the operation of the vacuum pump 29 is continued, the d time which is the operation time of the vacuum pump 29 is accumulated, and the integrated value is stored. (Step S21). Subsequently, it is determined whether the integrated value of d time is greater than or equal to the third predetermined time (D time) or less than D time (step S22). When it is determined in step S22 that the integrated value of d time is less than D time, the flow returns to step S14 to monitor the state of the low pressure chamber door 50, the refrigerating chamber door 6, and the refrigerating chamber 2 while the vacuum pump ( Continue to 29).

When it is determined in step S22 that the integrated value of d time is equal to or longer than D time, the operation of the vacuum pump 29 is stopped (step S23), the pressure value P is set to 0.7 atm, and the flow returns to step S4.

When the pressure value P is determined to be 0.7 atm in step S4, the open / closed state of the low pressure chamber door 50 is determined by the low pressure chamber door switch 83 (step S31). If it is determined in step S31 that the low pressure chamber door 50 is in the open state, the process proceeds to step S35.

When it is determined in step S31 that the low pressure chamber door 50 is closed, the pressure switch 84 determines whether the pressure in the low pressure chamber 24 is a predetermined pressure (for example, 0.8 atm or more) or a predetermined pressure. It determines whether it is less than (for example, less than 0.8 atmosphere) (step S32). When it is determined in step S32 that the pressure in the low pressure chamber 24 is less than 0.8 atmosphere, the B time is cleared (step S33), and the flow returns to step S31.

When it is determined in step S32 that the pressure in the low pressure chamber 24 is 0.8 atm or higher, it is determined whether the B time has elapsed (step S34). If it is determined in step S34 that B time has not passed, the process returns to step S31.

If it is determined in step S34 that B time has elapsed, the time B is cleared (step S35), the pressure value P is set to 1.0 (step S36), and the flow returns to step S4.

40 shows an example of the driving operation of the control apparatus 80 as shown in FIG.

41 and 42 show the control operation of the control device 80 when the pressure switch 84 is not used. In this control process, determination is made using the operation time z of the vacuum pump 29 instead of the detection value of the pressure switch 84, and other processes are the same. FIG. 41 is a flowchart for explaining the control operation of the control device when no pressure switch is used; FIG. 42 is a flowchart showing an example of the operation in FIG.

1 is a front view of a refrigerator in one embodiment of the present invention;

2 is a longitudinal sectional view of the refrigerator of FIG.

3 is a front view of the refrigerator main body of FIG. 1;

4 is a front view of the refrigerator compartment part of the refrigerator main body of FIG.

Fig. 5 is a plan view of the lowest space portion of the refrigerating compartment of Fig. 4;

Fig. 6 is a sectional perspective view of the lowest space portion of the refrigerating compartment of Fig. 4;

7 is a front view of the back panel of the refrigerating compartment of FIG. 4;

Fig. 8 is a longitudinal sectional view of the vicinity of a low pressure chamber of the refrigerating chamber of Fig. 4;

9 is a perspective view of a low pressure chamber of the refrigerating chamber of FIG.

Fig. 10 is a perspective view of the outer side of the low pressure chamber of Fig. 6 seen from the upper right side.

Fig. 11 is a perspective view of the outside of Fig. 10 viewed from below.

12 is a sectional view of the outline of FIG. 10;

FIG. 13 is a sectional perspective view of the outline of FIG. 10; FIG.

FIG. 14 is a perspective view of the outer side of FIG. 10 viewed from the upper left side; FIG.

Fig. 15 is an exploded perspective view showing the reinforcing glass plate and the annular packing of the low pressure chamber of Fig. 6;

Fig. 16 is a perspective view of the plate member of the low pressure chamber of Fig. 6;

Fig. 17 is a perspective view of the plate-like member of Fig. 16 assembled to the outside;

18 is a sectional perspective view of FIG. 17;

Fig. 19 is a perspective view showing a modification of Fig. 16 with a rail mounted on a plate-like member.

Fig. 20 is a perspective view of a state in which the gap cover is mounted by assembling the plate member of Fig. 19 to the outside;

Figure 21 is a sectional perspective view of Figure 20;

Fig. 22 is a sectional front view of Fig. 20;

Figure 23 is a perspective view of the low pressure chamber door of Figure 9;

Fig. 24 is a perspective view of a state in which the handle of Fig. 23 is removed.

25 is a rear perspective view of the low pressure chamber door of FIG.

Fig. 26 is a sectional perspective view of the low pressure chamber of Fig. 9;

FIG. 27 is an enlarged sectional view of an upper corner of the low pressure chamber of FIG.

FIG. 28 is an enlarged sectional view of a lower corner of the low pressure chamber of FIG.

FIG. 29 is an enlarged cross sectional view of the pressure relief valve of FIG. 23; FIG.

30 is an enlarged cross-sectional view of the indicator portion of FIG.

Fig. 31 is a perspective view of the low pressure chamber door of Fig. 9 withdrawn forward;

Figure 32 is a perspective view of the food tray of Figure 8;

Fig. 33 is a sectional perspective view of the food tray of Fig. 32 assembled in a low pressure chamber body;

Fig. 34 is a sectional perspective view of a state in which the low pressure chamber of the portion of the partition wall in the present embodiment is not provided.

Fig. 35 is a sectional perspective view of a state in which a low pressure chamber is installed in a part of a partition wall in the present embodiment.

Fig. 36 is a sectional front view just before the assembling of the low pressure chamber in the partition wall in the present embodiment.

Fig. 37 is a sectional front view of a state in which a low pressure chamber is assembled to a partition wall in the present embodiment.

Fig. 38 is a diagram illustrating input and output between the control device and each device in the present embodiment.

39 is a flowchart for explaining the control operation of the control device in FIG.

40 is a flowchart showing an example of the operation of FIG. 39;

Fig. 41 is a flowchart for explaining the control operation of the control apparatus when there is no pressure switch according to the present embodiment.

42 is a flowchart showing an example of the operation of FIG. 41;

<Explanation of symbols for the main parts of the drawings>

1: refrigerator body

2: cold storage room

3: freezer

3a: Ice making room

3b: quenching chamber

4: freezer

5: vegetable room

6: refrigerator door

7: ice-making door

8: quench door

9: freezer door

10: vegetable room door

11: outer box

12: inner box

13: foam insulation

14: compressor

15: evaporator

16: blower fan

17-20: shelf

21: lowest space

22: ice-making tank

23: storage case

24: low pressure chamber

25 to 27: door pocket

28: ice making pump

29: vacuum pump

29a: conduit

30: back panel

31, 32: cold air discharge port

33: cold return port

34 to 36 partition walls

34a: front and rear positioning groove

34b: Low Pressure Fitting Hook

37: cold passage

40: low pressure chamber body

41: low pressure space

42: outskirts

42a: food opening

42b: glass plate loading opening

42c, 44a, 60b: sidewalls

42d, 44b, 60a: floor wall

42e, 44c, 60d: back wall

42f: Outer reinforcement rib

42g: Hook for Assembly

42h: locking projection

42i: Pump connection

42j: Pressure switch connection

42k: Upper support for link

42l: Lower support for link

43: glass plate

44: plate-shaped member

44d to 44f: Convex portion

44g: branch

45: annular packing

45a: concave groove

46: rail

47: gap cover

48: door coupling member

48a: inverse C shape

48b: door latch hook

50: low pressure chamber door

51: door body

51a: handle recess

51b: door reinforcement ribs (reinforcement means, reinforcement protrusions)

51c: Handle Hinge Base

51d: link mechanism connection

51e: front and rear positioning top

51f: front and rear positioning bottom

51g: protrusion 51h: through hole

52: door handle

52a: hinge part

52b: through hole

53: pressure relief valve

53a: valve seat

53b: valve body

54: indicator

55: gasket

60: food tray

60c: front wall

60e: concave

60f: Door Fitting Hook

70: link mechanism

70a to 70d: link side

80: control unit

81: operation switch

82: fridge door switch

83: Low Pressure Room Door Switch

84: pressure switch

85: fridge temperature sensor

Claims (20)

A refrigerator body having a plurality of storage compartments, Doors for opening and closing the front openings of the respective storage compartments; A low pressure chamber disposed in the storage chamber, A refrigerator provided with decompression means for decompressing the inside of the low pressure chamber, The low pressure chamber has a low pressure chamber body having an opening for food entry and exit, and a low pressure chamber door for opening and closing the opening for food entry, The low pressure chamber main body includes a box-shaped resin outer periphery in which the food entry opening is formed, and two side walls, a bottom wall disposed inside the outer periphery and corresponding to both side walls, the bottom wall, and the rear wall of the outer periphery. A plate-shaped member made of metal having a back wall; Forming projections projecting inwardly on both side walls and the rear wall of the outer, and engaging the locking projections on both side walls and the rear wall of the plate-like member to limit the movement of the plate-like member upward A refrigerator comprising a locking unit. delete The refrigerator according to claim 1, wherein the outer periphery forms the food entrance opening on the front surface, and the plate-shaped member has the front surface as the open surface corresponding to the food entrance opening. delete delete 2. The plate-shaped member according to claim 1, wherein both sidewalls of the plate-shaped member are formed to have an arc shape and extend upward from an arc-shaped corner portion with the bottom wall of the plate-shaped member, and the bottom wall of the plate-shaped member is the plate-shaped. A refrigerator, characterized in that it has an arc shape and extends to a central portion from an arc-shaped corner portion with both side walls of the member. The method according to claim 1, wherein a plurality of first convex portions extending left and right across both sidewalls and the bottom wall of the plate-like member are formed before and after, extending back and forth to the bottom wall of the plate-shaped member, and being higher than the first convex portion. And a plurality of second high convex portions formed on the left and right, and the food tray is placed in the plate-shaped member so as to be placed in and out of the second convex portion. 2. The cold air discharge port according to claim 1, wherein an opening for forming a glass plate is formed on an upper surface of the outer periphery, and a transparent glass plate is airtightly installed in the glass plate loading opening through an annular packing, and a cold air discharge port blows cold air over the glass plate. Refrigerator, characterized in that forming. According to claim 1, wherein the decompression means is composed of a pump, the plurality of shelves in the refrigerating chamber constituting the storage compartment is installed so as to be removable, the ice-making water tank, food storage case and the lower space of the lower shelf The low pressure chambers are arranged in parallel in order, and the pumps are arranged in a space behind the food storage case and on the rear side of the low pressure chamber, and the pump connection portion is opened to the rear portion of the outer edge so as to face the plate member. And a gap formed between the pump connection portion and the plate member. A refrigerator body including a plurality of storage compartments including a refrigerator compartment, Doors for opening and closing the front openings of the respective storage compartments; A low pressure chamber disposed in the refrigerating chamber, A refrigerator provided with decompression means for decompressing the inside of the low pressure chamber, The low pressure chamber has a low pressure chamber body having an opening for food entry and exit, and a low pressure chamber door for opening and closing the opening for food entry, The low-pressure chamber body corresponds to a box-shaped resin outer periphery in which the food opening and exit opening is formed on the front surface, and a glass plate loading opening is formed on the upper surface, and corresponding to both side walls, the bottom wall, and the rear wall of the exterior. A metal plate member having both side walls, a bottom wall and a back wall; The transparent glass plate is airtightly installed in the glass plate loading opening through the annular packing, A refrigerator comprising a gap between an upper surface of the glass plate and a shelf partitioning the inside of the refrigerating chamber as a cold air passage for inducing cold air to the front. A refrigerator body having a plurality of storage compartments, Doors for opening and closing the front openings of the respective storage compartments; A low pressure chamber disposed in the storage chamber, A refrigerator provided with decompression means for decompressing the inside of the low pressure chamber, The low pressure chamber has a low pressure chamber body having an opening for food entry and exit, and a low pressure chamber door for opening and closing the opening for food entry, And the low pressure chamber door has reinforcing means inserted into the food entrance opening. The refrigerator according to claim 11, wherein said reinforcing means comprises a reinforcing protrusion formed to protrude toward the rear side of said low pressure chamber door. The refrigerator according to claim 12, wherein the low pressure chamber door includes a resin door body that opens and closes the food entrance opening and closing portion, and the reinforcement protrusion part is formed of a reinforcement rib protruding toward the rear side of the door body. . The refrigerator according to claim 12, wherein the reinforcing protrusion has a top side rib and a bottom side rib inserted into the food entrance opening with a gap. The refrigerator according to claim 14, wherein the reinforcing protrusion has a plurality of vertical ribs connecting the upper rib and the lower rib. The refrigerator according to claim 12, wherein the reinforcement protrusion has an outer frame rib formed of an upper side rib, a lower side rib, and both side ribs. 15. The refrigerator according to claim 14, wherein the reinforcing protrusion is formed at the center of the rear surface of the low pressure chamber door and inserted into the center portion of the food entrance opening. 12. The low pressure chamber main body according to claim 11, wherein the low-pressure chamber body includes a metal plate-like member extending along a plurality of wall surfaces including a box-shaped resin outer periphery in which the food-outlet opening is formed and the bottom wall of the outer periphery. And the door reinforcing rib extends over the front end of the plate member. 12. The handle recess according to claim 11, wherein a handle recess is formed in the central portion of the resin door body constituting the low pressure chamber door, and the reinforcing means includes the handle recess and a reinforcing rib protruding from the handle recess. Featured refrigerator. A refrigerator body including a plurality of storage compartments including a refrigerator compartment, Doors for opening and closing the front openings of the respective storage compartments; A low pressure chamber disposed in the refrigerating chamber, A refrigerator provided with decompression means for decompressing the inside of the low pressure chamber, The low pressure chamber has a low pressure chamber main body having an opening for food in and out on the front face, and a low pressure chamber door for opening and closing the food opening and closing, The low pressure chamber door is provided with a resin door body for opening and closing the food entrance opening and closing, The door body has reinforcing means inserted into the food entrance opening, And the reinforcing means comprises an upper rib, a lower rib, and a vertical rib connecting the central portion of the door body, and inserted into a central portion of the food entry opening.

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