CN114484984A - Refrigerator with a door - Google Patents

Abstract

The invention provides a refrigerator capable of improving heat efficiency. The refrigerator of the embodiment is provided with: a housing; a cooling chamber disposed behind the storage chamber formed in the housing and accommodating a cooler; an air supply fan fixed to a cold air discharge port penetrating a front wall of the cooling compartment and installed to supply air from the cooling compartment to the storage compartment; an air guide plate disposed opposite to the front wall with a space in front of the front wall, having an opening with 1 or more air outlets, and having an air chamber formed between the air guide plate and the front wall; and a guide wall formed to protrude from a back surface of the air flow guide plate to be close to the front wall, and forming a flow path of air between the cold air discharge port and the air supply port.

Description

Refrigerator with a door

Technical Field

The present invention relates to a refrigerator.

Background

It is expected that the heat exchange efficiency of the refrigerator can be further improved.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2018-204876

Disclosure of Invention

The invention provides a refrigerator capable of improving heat efficiency.

The refrigerator of the invention comprises: a housing; a cooling chamber disposed behind the storage chamber formed in the housing and accommodating a cooler; a blowing fan fixed to a cold air discharge port penetrating a front wall of the cooling compartment and installed to blow air from the cooling compartment toward the storage compartment; an air guide plate which has an opening provided with 1 or more air outlets and arranged at a position facing the front wall at an interval in front of the front wall, and which forms an air blowing chamber between the air guide plate and the front wall; and a guide wall formed to protrude from a back surface of the air flow guide plate so as to be close to the front wall, and forming an air flow path between the cold air discharge port and the air supply port.

According to the above configuration, the thermal efficiency can be improved.

Drawings

Fig. 1 is a front view showing a refrigerator according to an embodiment.

Fig. 2 is a sectional view taken along line ii-ii in fig. 1.

Fig. 3 is a sectional view showing a refrigerator according to an embodiment.

Fig. 4 is a sectional view showing a refrigerator according to an embodiment.

Fig. 5 is an exploded perspective view showing the support plate, the blower fan, the guide plate, and the vertical wall of the embodiment.

Fig. 6 is a front view of a support plate according to the embodiment.

Fig. 7 is a rear view showing the guide plate of the embodiment.

Fig. 8 is a perspective view showing a guide plate of the embodiment.

Fig. 9 is a sectional view showing the vicinity of the cooling chamber of the embodiment.

Fig. 10 is a schematic view showing the airflow of the blowing chamber of the embodiment.

Fig. 11 is a rear view showing a guide plate according to a modification.

Fig. 12 is a perspective view showing a guide plate according to a modification.

Description of the reference numerals

1 … refrigerator, 7 … blowing chamber, 71, 72, 73, 74, 75 … blowing outlet, 8 … blowing fan, 4 … guiding plate (blowing guiding plate), 41, 42, 43 … guiding wall, 10 … casing, 16 … cooling chamber, 21 … cooler, 32 … fan setting outlet (cold air outlet), 3 … supporting plate (front wall).

Detailed Description

Next, a refrigerator according to an embodiment will be described with reference to the drawings. In the following description, the same reference numerals are given to the same or similar components. A repetitive description of the configuration may be omitted. In this specification, the left and right sides are defined with reference to a direction in which a user standing on the front side of the refrigerator views the refrigerator. When viewed from one side of the refrigerator, the side close to the user standing on the front side of the refrigerator is defined as "front", and the side far away from the user is defined as "rear". In the present specification, the "width direction" means the left-right direction in the above definition. In the present specification, the "front-rear direction" means a direction orthogonal to the width direction in the above definition and connecting the front and rear. In the present application, "a or B" is not limited to either a or B, but includes both a and B.

Fig. 1 is a front view showing a refrigerator 1 according to an embodiment. Fig. 2 is a longitudinal sectional view showing the refrigerator 1 at a line II-II in fig. 1. Fig. 3 is a longitudinal sectional view along the width direction of the refrigerator 1 of fig. 1. The refrigerator 1 includes a housing 10 and a cooling mechanism 2. The refrigerator 1 includes: refrigerator doors 111, 112, and 113, a temperature sensor 9, a control device not shown, and the like.

The casing 10 includes, for example, an inner box, an outer box, and a heat insulating portion. The inner box forms the inner surface of the housing 10 and the outer box forms the outer surface of the housing 10. Be provided with between inner box and outer container: a heat insulating part containing a foamed heat insulating material such as foamed polyurethane. The case 10 has heat insulating properties.

A plurality of storage chambers are provided inside the case 10. The housing 10 has, on the front surface side of each storage chamber: an opening for loading or unloading food material relative to each storage room. A plurality of storage compartments, for example, comprising

A first refrigerator compartment 101, a second refrigerator compartment 102, a freezer compartment 103. In the embodiment, the first refrigerator compartment 101 is disposed at the uppermost part, the second refrigerator compartment 102 is disposed below the first refrigerator compartment 101, and the freezer compartment 103 is disposed below the second refrigerator compartment 102. The arrangement of the storage compartments is limited to this example, and for example, the arrangement of the second refrigerating compartment 102 and the freezing compartment 103 may be reversed. The storage chamber is provided with: storage shelves, storage containers, ice-making water storage containers, and the like.

The second refrigerator compartment 102 is used as a vegetable compartment, for example. The second refrigerator compartment 102 is maintained at a refrigerator temperature band suitable for vegetable storage, for example, at 1 to 5 ℃. The freezing chamber 103 is a freezing temperature zone, for example, maintained at-10 ℃ or lower.

The second refrigerator compartment 102 is constituted by: the refrigerating temperature can be switched between the freezing temperature band and the refrigerating temperature band at will. The second refrigerator compartment 102 may be used as a freezer compartment. Therefore, second refrigerating compartment 102 is not limited to a storage compartment suitable for a vegetable storage environment, and may be: a storage room having a refrigerating function can be set in a refrigerating temperature range equivalent to that of first refrigerating room 101.

The refrigerator 1 is provided with refrigerator doors 111, 112, 113. The refrigerator doors 111, 112, 113 are: and a means for closing the opening of the storage chamber in an openable and closable manner. Refrigerator doors 111, 112, 113 are provided at the front of the case 10. The refrigerator doors are, for example, a rotary door 111 and sliding doors 112 and 113.

The housing 10 has a first partition member 14 and a second partition member 15. The first partition member 14 and the second partition member 15 are each provided substantially horizontally. The first partition member 14 and the second partition member 15 have heat insulating properties. The first partition member 14 is disposed between the first refrigerator compartment 101 and the second refrigerator compartment 102, and partitions 2 storage compartments 101 and 102. The first partition member 14 is, for example, a resin plate-like member. The second partition member 15 is located between the second refrigerating compartment 102 and the freezing compartment 103, and partitions 2 storage compartments 102, 102. The second partition member 15 is, for example, a plate-like member having a heat insulating material filled therein.

As shown in fig. 3, an upper vent 141 that communicates the first refrigerator compartment 101 with the second refrigerator compartment 102 is opened at the rear of the first partition member 14. A lower vent 151 that communicates the second refrigerating chamber 102 with the freezing chamber 103 is opened at the rear of the second partition member 15.

As shown in fig. 2, a vertical wall 18 is provided in front of a rear wall 19 of the housing 10 with a space therebetween. The longitudinal walls 18 are arranged: for example, exposed to the storage chambers 101, 102, and 103. The vertical wall 18 functions as a rear wall surface of each of the storage chambers 101, 102, 103. The vertical walls 18 are provided in the storage chambers 101, 102, and 103, respectively.

The blowing chamber 7 and the cooling chamber 16 are disposed in the rear portion of the lower portion of the casing 10. Air blowing chamber 7 and cooling chamber 16 are disposed behind freezing chamber 103. The vertical wall 183 is disposed at the rear of the freezing chamber 103. The cooling chamber 16 and the air supply chamber 7 are communicated with each other through the freezing chamber 103 and the plurality of air supply ports 71 to 75.

The cooling mechanism 2 includes: compressor 26, cooler 21, an accumulator, and a suction pipe. The air in the cooling chamber 16 cooled by the cooling mechanism 2 is blown to the duct 17 by the blower fan 8. A machine chamber 105 is provided at the rear of the lower end of the housing 10. The compressor 26 is disposed in the machine room 105. A cooler 21, a reservoir, a heater, and the like are provided in the cooling chamber 16.

As shown in fig. 2, a duct 17 is provided behind each of the storage chambers 101, 102, 103. The duct 17 constitutes: a part of a flow path for circulating cold air between first and second refrigerators 101 and 102 and cooling compartment 16. As shown in fig. 3, the duct 17 is located at the center portion in the width direction of the casing 10, and extends in the vertical direction Z between the upper end portion of the casing 10 and the freezing chamber 103. Duct 17 is formed between rear wall 19 and vertical wall 18 of first refrigerating compartment 101, between vertical wall 182 and lid 175 of second refrigerating compartment 102, and in the upper portion of cooling compartment 16. The side walls constituting the duct 17 have heat insulating properties. The cooling chamber 16 is communicated with the duct 17 so that air can flow therethrough.

The cover 175 is disposed in front of the vertical wall 182 and between the first partition member 14 and the second partition member 15. The lid 175 is a member having a substantially U-shaped horizontal cross section. The cover 175 is provided in a portion including a substantially central portion in the width direction of the second refrigerator compartment 102. The rear end of the cover 175 is in close contact with the vertical wall 182 via a seal not shown. The upper end opening of the cover 175 is connected to the opening 143 of the rear end portion of the first partition member 14. The cover 175 communicates with the duct 17 at the rear of the first refrigerator compartment 101 through the opening 143 of the first partition member 14.

The lower end opening of the cap 175 is connected to: a communication passage 152 (see fig. 2) provided at the rear end of the second partition member 15. An air passage 162 is provided above the cooling chamber 16. The ventilation path 162 is: and a passage communicating with the air vent 31 of the support plate 3 and connecting the cooling chamber 16 and the communication passage 152. The cap 175 communicates with the cooling chamber 16 through the vent hole 31, the vent passage 162, and the communication passage 152. That is, the cooling chamber 16 and the duct 17 are connected by the cover 175.

A circulation passage, not shown, is disposed between the cooling chamber 16 and the side wall 11 of the casing 10. The circulation path is as follows: a tubular member arranged along the vertical direction Z. The circulation passage communicates between the lower end of the second refrigerator compartment 102 and the lower end of the cooling compartment 16. The cooling chamber 16 communicates with the circulation passage so that air can flow therethrough.

As shown in fig. 2, the plurality of blowing ports 189 are open in the vertical wall 181 of the first refrigerator compartment 101. The air outlet 189 is: an opening penetrating in the front-rear direction Y of the vertical wall 181 and communicating the duct 17 with the first refrigerator compartment 101. The plurality of blow-out ports 189 are provided with an interval in the vertical direction Z.

As shown in fig. 3, the plurality of blow-out ports 61 to 65 are open in the vertical wall 183 of the freezing chamber 103. The air outlets 61-65 are: an opening through which cold air is discharged from the cooling compartment 16 toward the freezing compartment 103. In this example, there are 5 outlets 61-65. The first outlet 61 and the second outlet 62 are opened above the vertical wall 183 so as to be separated from each other in the width direction X. The third air outlet 63 and the fourth air outlet 64 are open at the lower portion of the vertical wall 183 so as to be separated in the width direction X. The fifth air outlet 65 opens at a substantially central portion in the width direction X of the main body 40 and at a substantially intermediate portion in the vertical direction Z.

As shown in fig. 5, the guide plate 4 and the support plate 3 are disposed behind the vertical wall 183. The guide plate 4 is disposed behind the vertical wall 183, and the support plate 3 is disposed behind the guide plate 4. The back surface of the vertical wall 183 is disposed close to the guide plate 4. As shown in fig. 5, the vertical wall 183 has a rib 184 at the outer periphery. The guide plate 4 is housed inside the rib 184 of the vertical wall 183. As shown in fig. 4, the blowing chamber 7 is: the space between the vertical wall 183 and the support plate 3. The cooling chamber 16 is: the space between the support plate 3 and the rear wall 19 of the housing 10. The upper end 33 of the support plate 3 is fitted to the upper end of the vertical wall 183. The lower end 34 of the support plate 3 is in contact with the lower end of the vertical wall 183. The support plate 3 is an example of a front wall.

As shown in fig. 4 and 5, the guide plate 4 is disposed in front of the support plate 3 so as to face each other. The front surface of the guide plate 4 is covered with the vertical wall 183. That is, the guide plate 4 is disposed between the support plate 3 and the vertical wall 183. The guide plate 4 is an example of an air blow guide plate.

As shown in fig. 4, a gap with a gap is formed between the support plate 3 and the guide plate 4, and the blowing chamber 7 is configured. The blowing chamber 7 is formed with: the cool air blown from the blower fan 8 flows through the upward and forward flow paths. The blowing chamber 7 is a space surrounded by the support plate 3, the guide plate 4, the first guide wall 41, and the second guide wall 42.

The blower fan 8 is, for example, an axial fan (propeller fan). The blower fan 8 includes a rotary shaft 81, rotary blades 82, and a frame 84. As shown in fig. 2, the blower fan 8 is fixed to the support plate 3. A fan installation opening 32 for arranging the blower fan 8 is formed in the support plate 3. The holder body 84 is fixed to the fan installation port 32. The frame body 84 has: an opening 83 opened toward the front. The rotation shaft 81 is fixed to the frame body 84. The rotation shaft 81 is disposed in the center of the opening 83 along the front-rear direction Y. The rotary blade 82 is rotatably attached to the rotary shaft 81. The blower fan 8 is operated so that the air flows from the rear to the front by the rotation of the rotary blades 82. That is, the blower fan 8 operates so that air is blown out forward from the cooling chamber 16 toward the freezing chamber side. The fan installation port 32 is an example of a cold air discharge port. The blower fan 8 may be a centrifugal fan, for example, as long as it can blow air from the cooling chamber 16 toward the freezing chamber.

As shown in fig. 6, the blower fan 8 is provided above the support plate 3. The blower fan 8 is disposed: is located outward of the center of the support plate 3 in the width direction X. The blower fan 8 is located, for example, behind the freezing chamber 103. The blower fan 8 sucks air from the cooling chamber 16 and discharges the sucked air in the centrifugal direction of the blower fan 8. Since the blower fan 8 is attached to the fan installation port 32, when the blower fan 8 is driven, air flows from the cooling chamber 16 to the blower chamber 7 through the opening of the fan installation port 32. As the blower fan 8, for example, a centrifugal turbo fan, a sirocco fan, or the like can be used.

As shown in fig. 4, the blower fan 8 is disposed in the cooling chamber 16: and a position forward of the cooler 21. A part of the blower fan 8 is disposed to overlap the cooler 21. Specifically, the blower fan 8 is disposed, as viewed from the front-rear direction Y: the lower end of the blower fan 8 is located at a position overlapping the cooler 21. The blower fan 8 is configured to: the lower end of the blower fan 8 is lower than the upper end of the cooler 21. The rotating shaft 81 is disposed at a position higher than the upper ends of the fins 211. In the vertical direction Z, the lower portion of the blower fan 8 faces the cooler 21, and the upper portion of the blower fan 8 is disposed: exposed to the space above the cooler 21.

Fig. 7 is a view of the guide plate 4 as viewed from the back side. As shown in fig. 4 to 7, the guide plate 4 is: a plate-like member provided substantially over the entire area in front of the support plate 3. The guide plate 4 has: a main body 40, a protrusion 44, and 1 or more guide walls 41 to 43. The main body 40 is: a portion disposed opposite to the support plate 3. The main body 40 is provided with a plurality of air outlets 71-75. The air blowing ports 71 to 75 are open at positions corresponding to the first to fifth air blowing ports 61 to 65 of the vertical wall 183. The first to fifth air blowing ports 71 to 75 have substantially the same shape as the first to fifth air blowing ports 61 to 65, respectively. The first to fifth air blowing ports 71 to 75 are arranged such that: the first to fifth outlets 61 to 65 are in close contact along the opening edges of the vertical walls 183. The projections 44 are: a protrusion protruding rearward from the main body 40 at a position corresponding to the rotation shaft 81 of the blower fan 8. The projection 44 faces the rotation shaft 81 of the air-sending fan 8, and guides the air from the air-sending fan 8 to the periphery of the projection 44.

As shown in fig. 7 and 8, the guide plate 4 includes: for example, 3 guide walls of the first guide wall 41 to the third guide wall 43. The guide walls 41 to 43 guide the flow of the cold air. The guide walls 41-43 project rearward from the rear surface of the main body 40. The guide walls 41 to 43 are opposed to and close to the main body 30 of the support plate 3. The term "close" as used herein includes: the guide walls 41 to 43 are in contact with the main body 30, are slightly spaced to such an extent that the air flow in the air blowing chamber 7 described later is not affected, and are sealed by a sealing material or the like.

The first guide wall 41 is formed between the first air blowing port 71 and the third air blowing port 73. The first guide wall 41 has: a substantially triangular shape protruding from the end portions in the width direction X of the guide plate 4 toward the center portion in the width direction X when viewed in the front-rear direction Y. Specifically, the upper wall surface 412 of the first guide wall 41 is inclined from the protruding end 411 toward the outer end 712 of the first air blowing port 71 in the width direction X. The lower wall surface 413 of the first guide wall 41 is inclined from the protruding end 411 toward the outer end 732 in the width direction X of the third blowing port 73. The protruding end 411 has a curved shape protruding toward the center. The first guide wall 41 is formed: the space between the first air blowing port 71 and the third air blowing port 73 is blocked. Specifically, the first guide wall 41 is provided between the first air blowing port 71 and the third air blowing port 73 in the vertical direction Z. The height of the protruding end 411 in the vertical direction Z is substantially the same as the height of the fifth blowing port 75. The opening dimension of the first air blowing port 71 in the width direction X is shorter than the opening dimension of the third air blowing port 73 in the width direction X. The end 711 of the first air blowing port 71 on the center side in the width direction X is located at: and a position located outward of the central end 731 of the third blowing port 73. The projecting end 411 of the first guide wall 41 projects toward the center side from the center-side end 731 of the third blowing port 73 in the width direction X.

The second guide wall 42 has: a substantially triangular shape protruding from an end portion in the width direction X of the guide plate 4 toward a central portion in the width direction X when viewed in the front-rear direction Y. The upper wall surface 422 of the second guide wall 42 is inclined from the projecting end 421 toward the outer end 722 of the second blowing port 72 in the width direction X. The lower wall surface 423 of the second guide wall 42 is inclined from the projecting end 421 toward the outer end 742 of the fourth blowing port 74 in the width direction X. The protrusion end 421 has a curved shape protruding toward the center. The second guide wall 42 is formed such that: the second air supply opening 72 and the fourth air supply opening 74 are blocked. Specifically, the second guide wall 42 is provided between the second air blowing port 72 and the fourth air blowing port 74 in the vertical direction Z. The projecting end 421 of the second guide wall 42 projects to the center side of the end 741 of the fourth blowing port 74 in the width direction X. The protruding end 421 is higher than the fifth blowing port 75 in the up-down direction Z. The protruding end 421 is higher than the lower end of the blower fan 8 in the vertical direction Z.

The opening dimension in the width direction X of the second air blowing port 72 is shorter than the opening dimension in the width direction X of the fourth air blowing port 74. The end 721 on the center side in the width direction X of the second air blowing port 72 is located: the end 741 on the center side of the fourth blowing port 74 is positioned outward. The projecting end 421 of the second guide wall 42 projects toward the center side from the center-side end 721 of the second blowing port 72 in the width direction X.

The third guide wall 43 is: and a wall extending obliquely downward from the end 711 on the center side of the first blowing port 71 toward the center of the main body 40. The third guide wall 43 is formed such that: at a position spaced upward from first guide wall 41, it extends substantially parallel to upper wall surface 412. The extending end 431 of the third guide wall 43 is higher than the protruding end 411 of the first guide wall 41 in the up-down direction Z. The third guide wall 43 is a plate-like wall. The extended end 431 of the third guide wall 43 is located at: substantially at the same height as the lower end of the blower fan 8. The extended end 431 of the third guide wall 43 is located at: at substantially the same height as the protruding end 421 of the second refrigerating compartment 102. In the width direction X, the extension end 431 of the third guide wall 43 is located: and a position closer to the center side than the projecting end 411 of the first guide wall 41. In the width direction X, the extension end 431 of the third guide wall 43 is located: and a position further toward the outside than the fifth blowing port 75.

As shown in fig. 7, the extending end 431 of the third guide wall 43 is disposed: and a position away from the first air blowing port 71 side from a line L connecting the protruding end 411 of the first guide wall 41 and the rotation shaft 81 of the air blowing fan 8.

The position of the protruding end 421 of the second guide wall 42 in the up-down direction Z is higher than the position of the protruding end 411 of the first guide wall 41. The rotation direction of the blower fan 8 is indicated by an arrow S in fig. 7. The first guide wall 41 is provided on the left side and the second guide wall 42 is provided on the right side as viewed from the rear along the front-rear direction Y. As shown in fig. 7, the blower fan 8 rotates counterclockwise when viewed from the rear. In the case where the blower fan 8 is rotated counterclockwise, the height of the projecting end of the guide wall at the right position is higher than the height of the projecting end of the guide wall at the left position. Although not shown, when the blower fan 8 rotates clockwise when viewed from the rear, the height of the left projecting end is higher than the height of the right projecting end of the guide wall.

The projecting end 421 of the second guide wall 42 is at the same height position as the extending end 431 of the third guide wall 43 in the up-down direction Z.

The fourth guide wall 45 is formed along the lower end edge 753 of the fifth blowing port 75, and protrudes rearward. As shown in fig. 8, the fourth guide wall 45 has: an inclined surface 453 inclined from the projecting end 452 of the upper surface 451 toward the lower portion of the main body 40, and the upper surface 451 extends rearward from the lower end edge 753 of the fifth blowing port 75. As shown in fig. 7, the upper end portion of the fourth guide wall 45 has: and has a substantially U-shape when viewed in the front-rear direction Y. The fourth guide wall 45 is provided at: the lower edge 753 of the fifth blowing port 75 and the peripheries of both ends in the width direction X.

The boundary portions between the rear surface of the main body 40 and the respective wall surfaces of the first to fourth guide walls 41 to 45 have curved surface shapes. As a result, the air flow can be smoothly guided.

Fig. 9 is a longitudinal sectional view along the front-rear direction Y of the support plate 3 and the guide plate 4. As shown in fig. 9, the first guide wall 41 abuts against the main body 30 of the support plate 3. The second guide wall 42 and the third guide wall 43 also contact the main body 30 of the support plate 3 in the same manner. In the guide chamber, the portions where the first guide wall 41, the second guide wall 42, and the third guide wall 43 are provided are closed, and a no-wind area in the guide chamber is configured. The guide walls 41, 42, and 43 form: and a flow path from the blower fan 8 to each of the air outlets 71-75. The cold air flows through a gap between the rear surface of the main body 40, which is a portion where the first to third guide walls 41 to 43 are not provided, and the front surface of the main body 30 of the support plate 3. The fourth guide wall 45 protrudes rearward from the lower end edge of the fifth blowing port 75, and the airflow meets the upper surface 451 and is guided to the fifth blowing port 75.

As shown in fig. 2 and 4, a return flow path 5 is formed between the freezing chamber 103 and the cooling chamber 16. The return flow path 5 is: and a flow path for returning air flowing from the upper portion to the lower portion of the freezing chamber 103 to the cooling chamber 16. The inlet 52 of the return flow path 5 opens below the vertical wall 183, and the outlet 51 opens forward below the cooler 21. The return flow path 5 extends from below the lower end 34 of the support plate 3 to the outlet 51. Since the return flow path 5 communicates with the cooling chamber 16, there are formed: when the air in cooling chamber 16 is sucked to vertical wall 183 side by blower fan 8, the air circulates between cooling chamber 16 and freezing chamber 103. A filter is provided at a boundary between the return flow path 5 and the cooling chamber 16. The filter prevents dust and the like in the freezing chamber 103 from entering the cooling chamber 16.

Temperature sensors are disposed in the storage chambers 101, 102, and 103. Each of the storage chambers 101, 102, and 103 is provided with 1 or more temperature sensors. The cooler 21 and the reservoir of the cooling mechanism 2 are also provided with temperature sensors. The operation of the cooling mechanism 2 is controlled in accordance with the monitored temperature of each temperature sensor. For example, when the monitored temperature of the storage room becomes equal to or higher than a predetermined temperature or when a predetermined condition such as the number of times of opening and closing the door is satisfied, the compressor 26 starts to operate. When the monitored temperature of the storage chamber is equal to or lower than the predetermined temperature, the compressor 26 is stopped.

A cooling system of the cooling mechanism 2 is explained. The high-temperature and high-pressure gas refrigerant compressed by the compressor 26 passes through a suction pipe, passes through a condenser and the like in turn, is reduced in temperature, and is decompressed. The refrigerant decompressed and reduced in temperature flows to the cooler 21. The low-temperature refrigerant is vaporized while passing through the cooler 21, and the air flowing between the fins of the cooler 21 is cooled by heat exchange with the fins. As a result, the air in the cooling chamber 16 is cooled. The refrigerant having passed through the cooler 21 flows into the accumulator, returns to the compressor 26 through the suction pipe 28, and circulates.

When the inside of the cooling chamber 16 becomes negative pressure by the suction operation of the blower fan 8, a part of the air cooled by the cooler 21 flows from the cooling chamber 16 to the storage chambers 101, 102, and 103 through the flow path of the blower fan 8.

Next, the flow of the cold air in the blowing chamber 7 will be described with reference to fig. 10. Fig. 10 is a schematic view showing the airflow in the blowing chamber 7 when viewed from the rear. The blower fan 8 rotates in the direction indicated by the arrow S in fig. 10. The air sent from the cooling chamber 16 by the blower fan 8 generates airflows schematically indicated by arrows a1 to A8 in the direction S of rotation of the blower fan 8. The air sent from the blower fan 8 flows in a desired direction while meeting the first guide wall 41, the second guide wall 42, and the third guide wall 43.

For example, the airflow a1 that collides with the upper wall surface 432 of the third guide wall 43 is guided diagonally upward along the upper wall surface 432. The air vent 31 of the main body 30 of the support plate 3 opens above the upper end of the upper wall surface 432 of the third guide wall 43. The airflow guided by the upper wall surface 432 of the third guide wall 43 is guided to the air vent 31.

For example, the airflow a2 that flows below the extension end 431 of the third guide wall 43 and collides with the vicinity of the projecting end 411 of the upper wall surface 412 of the first guide wall 41 is guided along the first flow path formed between the upper wall surface 412 of the first guide wall 41 and the lower wall 433 of the third guide wall 43. The first air blowing port 71 is open at the upper end of the first flow path between the upper wall surface 412 of the first guide wall 41 and the lower wall 433 of the third guide wall 43. The first channel has, at its upper end: and a lower surface 414 projecting rearward along the upper end edge of the first blowing port 71. Therefore, the airflow flowing through the first flow path toward the upper end of the first flow path passes through the first air blowing port 71 and the first air outlet 61, and the cold air is blown out into the freezing chamber 103.

For example, the airflow a3 passing between the protruding end 411 of the first guide wall 41 and the fourth guide wall 45 flows toward the lower end wall 491 of the guide plate 4 and flows into the third blowing port 73. In addition, the air flow a3 passing between the protruding end 411 of the first guide wall 41 and the fourth guide wall 45 collides with the lower end wall 491 and is guided to the third air blowing port 73. The cold air is blown out into freezing chamber 103 through third air outlet 73 and third air outlet 63.

The airflow a4 sent out from the blower fan 8 and flowing toward the fourth guide wall 45 collides with the upper surface 451 of the fourth guide wall 45 and is guided to the fifth air outlet 75. The cold air is blown out into the freezing chamber 103 through the fifth air outlet 75 and the fifth air outlet 65.

The airflow a5 sent out by the blower fan 8 and flowing between the fourth guide wall 45 and the second guide wall 42 collides with the lower side wall 492 and the lower end wall 491 of the second guide wall 42, and is guided to the fourth blower port 74. The airflow a6 sent from the blower fan 8 and flowing below the projecting end 421 of the second guide wall 42 collides with the lower wall surface 423, flows downward, and is guided to the fourth air outlet 74. The cold air is blown out into freezing chamber 103 through fourth air outlet 74 and fourth air outlet 64.

The airflow a7 sent out from the blower fan 8 and flowing upward above the projecting end 421 of the second guide wall 42 collides with the upper wall surface 422 of the second guide wall 42, flows upward, and is guided to the second air outlet 72. The airflow A8 sent from the blower fan 8 and flowing to a position above the upper wall surface 422 of the second guide wall 42 flows directly into the second air outlet 72. Alternatively, the airflow A8 collides with the upper end wall 493 of the guide plate 4 and is guided to the second blowing port 72. Cold air is blown out into freezing chamber 103 through second air outlet 72 and second air outlet 62.

As described above, since: the guide walls 41, 42, 43, 45 that guide the airflows A1-A8 that flow from the blower fan 8, respectively, so that the cold air can be smoothly guided to the respective air outlets 71-75. That is, a wide area close to the main body 30 of the support plate 3 is provided in the air blowing chamber 7 as in the first guide wall 41 and the second guide wall 42, and the space in the air blowing chamber 7 has a shape in consideration of the rotation direction and the airflow of the air blowing fan 8. As a result, the air flow can be guided to the air outlets 71-75 more efficiently. For example, compared to the case where the guide chamber is formed over the entire main body 30 of the support plate 3, turbulence is less likely to be generated in the blowing chamber 7. Therefore, air-blowing chamber 7 can efficiently guide the cold air sent from cooling chamber 16 by air-blowing fan 8 into freezing chamber 103. As a result, heat loss when cold air is supplied from cooling compartment 16 to the storage compartments such as freezing compartment 103 can be prevented, and cooling efficiency of refrigerator 1 can be improved.

Since the third guide wall 43 is disposed between the air vent 31 and the first air outlet 71, the cool air sent from the air sending fan 8 can be smoothly distributed to the air vent 31 and the first air outlet 71, and the cool air can be efficiently sent out.

The extension end 431 of the third guide wall 43 is disposed at: and a position away from the first air blowing port 71 side from a straight line L connecting the protruding end 411 of the first guide wall 41 and the rotation shaft 81 of the air blowing fan 8. As a result, the extended end 431 of the third guide wall 43 does not interfere with the airflow a2 flowing toward the first guide wall 41. Therefore, the cool air sent from the blower fan 8 can be smoothly distributed to the vent port 31 and the first vent port 71, and the cool air can be efficiently sent out.

A damper, not shown, is provided in the air vent 31 of the support plate 3. The vent 31 communicates with the duct 17 when the damper is open. When the damper is opened, the cold air flowing out of the air supply chamber 7 and passing through the air vent 31 of the support plate 3 flows into the duct 17 and flows upward in the duct 17. The low-temperature air is blown out into the storage chambers 101 and 102 from the plurality of blow-out ports 189. The blown low-temperature air flows downward in the storage chambers 101 and 102, and cools the storage chambers 101 and 102.

A part of the air descending in the first refrigerating compartment 101 flows into the second refrigerating compartment 102 through the upper vent 141 of the first partition member 14. As a result, the inside of the second refrigerator compartment 102 is cooled. The second refrigerated compartment 102 is cooled at a higher temperature than the first refrigerated compartment 101. The air having an increased temperature due to heat exchange with the stored material in the second refrigerating compartment 102 flows into the circulation passage 171, and flows into the lower portion of the cooling compartment 16 through the lower opening 173.

The air flowing from the upper portion to the lower portion of the freezing chamber 103 is returned to the cooling chamber 16 via the return flow path 5. Since the return flow path 5 communicates with the cooling chamber 16, air in the cooling chamber 16 is sucked to the vertical wall 183 side by the blower fan 8, and as a result, a flow path through which air circulates between the cooling chamber 16 and the freezing chamber 103 is formed.

Thus, the cool air circulates inside the refrigerator 1. The control device controls the cooling mechanism 2 based on the monitored temperatures output from the temperature sensors disposed inside the refrigerator 1. Specifically, the control unit controls the temperature of the air cooled in the cooling compartment 16, the flow rate of the cold air supplied from the cooling compartment 16, and the like so that the storage compartments 101, 102, and 103 of the refrigerator 1 reach a predetermined temperature range.

The structure of the guide wall in the blowing chamber 7 is not limited to the above example. For example, it is not essential that the third guide wall 43 extend substantially parallel to the upper wall surface 412 of the first guide wall 41. For example, the blowing chamber may be provided without the third guide wall 43. For example, the air blowing chamber may be provided with either one of the first guide wall 41 and the second guide wall 42. For example, the blowing chamber may include: a combination of 2 or more of the first guide wall 41, the second guide wall 42, and the third guide wall 43. The shapes of the first guide wall 41 and the second guide wall 42 are not limited to: an example of a substantially triangular shape when viewed from the front-rear direction Y. The first guide wall and the second guide wall may have any shape as long as the first guide wall and the second guide wall can smoothly guide the cold air to the air outlet. For example, the upper wall of the first guide wall may also be formed with a curved surface that is depressed downward.

The first guide wall 41 and the second guide wall 42 are not limited to: an example is one in which a substantially triangular portion from an end of the guide plate 4 in the width direction X to each of the projecting ends 411 and 421 contacts the main body 30 of the support plate 3. For example, the edge of the guide wall may be in close contact with the main body 30 of the support plate 3 along the ridge line of the upper wall and the lower wall of the guide wall, thereby preventing air from flowing from the flow path into the gap between the guide wall and the support plate 3.

For example, as in the guide plate 4A of the modification shown in fig. 11 and 12, a water blocking wall may be provided to the guide plate 4A. When frost adheres to the guide chamber, water may flow through the guide chamber due to the defrosting process. The water blocking wall serves to block such water. The water barrier wall prevents water from flowing into the freezing chamber 103 from the air supply ports 71 to 75. For example, in the example shown in fig. 11 and 12, the guide plate 4A has a plurality of water blocking walls 46, 47, and 48.

The water blocking walls 46 to 48 protrude less in the front-rear direction Y than the first guide walls 41 to the third guide walls 43. As shown in fig. 2 and 4, the blower fan 8 is fixed to the support plate 3, and a gap is provided between the blower fan 8 and the guide plate 4. Therefore, the cold air can flow in the blowing chamber 7 without being blocked by the water blocking walls 46 to 68.

The first water retaining wall 46 is: and a wall extending obliquely downward from the extending end 431 of the third guide wall 43. The first water retaining wall 46 is provided above the fifth supply port 75. In the width direction X, the extending end 461 of the first water retaining wall 46 is located at: the position between the fifth supply port 75 and the fourth supply port 74. In the vertical direction Z, the extension end 461 of the first water blocking wall 46 is disposed: a position lower than the upper end of the fifth blowing port 75. The extending end 461 is lower than the end of the fourth guide wall 45 in the width direction X in the vertical direction Z. Therefore, the water flowing downward along the main body 40 flows along the first water blocking wall 46 and drops downward from the extending end 461. Since the extension 461 is disposed between the fifth outlet 75 and the third outlet 73 and at a position lower than the fifth outlet 75, water can be prevented from flowing into the fifth outlet 75.

The third water blocking wall 47 is disposed adjacent to the end 731 of the third air blowing port 73 on the center side in the width direction X. The third water-retaining wall 47 is: a wall along the up-down direction Z. The dimension in the vertical direction Z of the third water blocking wall 47 is substantially the same as the dimension in the vertical direction Z of the opening of the third air blowing port 73. The third water deflector wall 47 can prevent: the water flowing downward along the main body 40 flows into the third air blowing port 73. The water flowing downward along the first guide wall 41 drops downward from the projecting end 411. Since the protruding end 411 of the first guide wall 41 is located: since the third air blowing port 73 is positioned further toward the center in the width direction X than the end portion 731 on the inner side in the width direction X, water dropping from the projecting end 411 can be prevented from entering the third air blowing port 73. That is, the first guide wall 41 functions as a water blocking wall.

The fourth water retaining wall 48 is: water is prevented from flowing into the wall of the fourth supply port 74. The fourth water blocking wall 48 has an inclined portion 481 and a side wall portion 482. The side wall portion 482 is: a wall along the up-down direction Z. The side wall portion 482 is disposed adjacent to an end portion 741 of the fourth blowing port 74 on the center side in the width direction X. The vertical dimension Z of the side wall portion 482 is substantially the same as the vertical dimension Z of the opening of the fourth blowing port 74. The inclined portion 481 is: and a wall extending obliquely downward from a lower end portion of the second guide wall 42 to an upper end of the side wall portion 482. The inclined portion 481 is provided continuously with the side wall portion 482. Therefore, the water flowing downward along the body 40 flows along the fourth blocking wall 48 to the lower portion of the guide plate 4A, and the water can be prevented from flowing into the fourth air blowing port 74.

The structure of the water blocking wall is not limited to the example shown in fig. 11 and 12. The water blocking wall may be configured to prevent water from flowing into each air blowing port. For example, the following may be configured: the water guide is provided above the air blowing ports, and is provided with a protrusion protruding rearward to guide water to a position avoiding the air blowing ports.

The configuration in which the extended end 431 of the third guide wall 43 is continuous with the first water blocking wall 46 is not necessarily required. For example, the first water blocking wall may be provided away from below the extended end 431 of the third guide wall 43.

In the above example, as shown in fig. 10, there are shown: the rotation direction S of the blower fan 8 is counterclockwise when viewed from the rear side in the front-rear direction Y, but the rotation direction of the blower fan 8 may be clockwise. For example, when the rotation direction of the blower fan 8 is clockwise, the guide walls may be arranged in a manner that the left and right sides of the guide plate 4 are reversed as shown in fig. 10.

The fixing position of the blower fan 8 to the support plate 3 is not limited to the above example. The guide walls may be arranged according to the arrangement of the blower fan 8.

In the above example, although: although the vertical wall 183 is a separate member from the guide plate 4, the vertical wall 183 may be an integral member with the guide plate 4.

The number and arrangement of the plurality of air outlets 71 to 75 and air outlets 61 to 65 are not limited to the above example. For example, it may be: the refrigerator does not include the fifth blowing port 75 and the fifth blowing port 65, and does not include the fourth guide wall 45.

Although the example of the refrigerator 1 having 1 cooling chamber 16 and air blowing chamber 7 is shown in the above embodiment, the present invention is also applicable to a refrigerator having a plurality of cooling chambers and air blowing chambers. The air blowing guide plate having the guide wall may be disposed in at least 1 of the plurality of cooling chambers and the air blowing chambers.

According to the refrigerator 1 described above, the refrigerator 1 having high heat exchange efficiency can be obtained. In the refrigerator 1 described above, the cold air discharged from the cooling compartment 16 by the air blowing fan 8 is guided to the guide walls 41, 42, 43, and 45, and smoothly flows to the air blowing openings 71 to 75.

According to the refrigerator 1 described above, since the first guide wall 41 or the second guide wall 42 is formed as: since the guide plate 4 protrudes from the edge toward the center, the airflow generated by the rotation of the blower fan 8 is smoothly guided to the air outlets 71 to 74. That is, the guide plate 4 has the first guide wall 41 or the second guide wall 42 at a portion where the airflow collides with the wall of the edge portion of the guide plate 4 and is likely to cause turbulence. As a result, turbulence can be prevented from occurring in the air blowing chamber 7, and the cold air can be smoothly guided to each air outlet.

According to the refrigerator 1 described above, since the guide plate 4 has the water blocking wall, it is possible to prevent water generated by the defrosting process from flowing into the air supply ports 73 to 75.

Although several embodiments of the present invention have been described, these embodiments are presented by way of example only and are not intended to limit the scope of the invention. These embodiments can be implemented in other various forms, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. These embodiments and modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof.

Claims (6)

1. A refrigerator is characterized by comprising:

a housing;

a cooling chamber disposed behind the storage chamber formed in the housing and accommodating a cooler;

a blowing fan fixed to a cold air discharge port penetrating a front wall of the cooling chamber and installed to blow air from the cooling chamber toward the storage chamber;

an air guide plate which is disposed opposite to the front wall with a gap in front of the front wall, has an opening with 1 or more air outlets, and forms an air chamber between the air guide plate and the front wall; and

and a guide wall that is disposed so as to protrude from a rear surface of the air flow guide plate and be close to the front wall, and that forms an air flow path between the cold air discharge port and the air supply port.

2. The refrigerator according to claim 1,

the air blowing port is opened near the edge of the air blowing guide plate,

the guide wall is formed such that: and extends from the edge of the air guide plate to the central part when viewed in the front-rear direction.

3. The refrigerator according to claim 1 or 2,

the guide wall is formed such that: the air flow path is formed between the cold air discharge port and the air supply port along the air flow formed by the air supply fan.

4. The refrigerator according to any one of claims 1 to 3,

the blower fan is fixed to the center side in the width direction of the upper portion of the front wall,

the guide wall is formed such that: projecting from the edge portion of the air flow guide plate toward the central portion in the width direction when viewed in the front-rear direction,

the projecting end of the guide wall on the central portion side is disposed at: and a position closer to the central portion side than an opening edge of the air blowing port located above or below the guide wall.

5. The refrigerator according to any one of claims 1 to 4,

the air supply guide plate has a water blocking wall formed to protrude from a main body of the air supply guide plate to prevent water from flowing into the air supply opening.

6. The refrigerator according to any one of claims 1 to 5,

the housing has a plurality of storage compartments,

the cooling chamber and the air supply chamber are communicated with a freezing chamber among the plurality of storage chambers through the air supply port.

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