WO2016086429A1

WO2016086429A1 - Refrigerator having anti-freeze-blocking air duct structure

Info

Publication number: WO2016086429A1
Application number: PCT/CN2014/093339
Authority: WO
Inventors: 刘洪挺; 姚惠民; 黄红红; 孙伟; 崔向前
Original assignee: 海信容声(广东)冰箱有限公司
Priority date: 2014-12-02
Filing date: 2014-12-09
Publication date: 2016-06-09
Also published as: CN104457096A

Abstract

The present invention relates to a household appliance, in particular to a refrigerator having an anti-freeze-blocking air duct structure, which comprises a first storage chamber (1) and a second storage chamber (2), wherein the first storage chamber (1) is arranged above the second storage chamber (2); an evaporator is arranged in the first storage chamber (1); the refrigerator also comprises a first air duct (111) disposed in the first storage chamber (1) and a second air duct (21) disposed in the second storage chamber (2), wherein the first air duct (111) is in communication with a space nearby the evaporator; and an air supply channel (113) is arranged between the first air duct (111) and the second air duct (21), a first guide boss (116) and a water outlet (118) are arranged in the first air duct (111), and the first guide boss (116) is disposed above the air supply channel (113), such that water in the air duct is obstructed from flowing into the air supply channel (113) and is guided to the water outlet (118). The refrigerator uses the air duct design of a refrigerator of an upper freezing and lower cold storage structure or a variable temperature refrigerator, the boss design in the air duct can prevent water drops or water flow generated in the first air duct (111) from flowing to a damper (106) and from further being frozen or blocking the air duct, and the failure of the air duct caused by icing is prevented.

Description

Refrigerator with anti-freeze blocking air passage structure

Technical field

The invention relates to a household appliance, in particular to a refrigerator having an anti-freeze blocking air duct structure.

Background technique

Today, the use of household appliances has become very popular. As a practical home appliance, the refrigerator is favored by users. At present, the air-cooled refrigerator that realizes no frost in the refrigerator room occupies a very large sales share in the refrigerator market.

Commercially available air-cooled refrigerators generally include a refrigerated (or variable temperature) chamber and a freezer compartment, and the refrigerated (or temperature-changing) chamber includes a liner and a refrigerated (or variable temperature) duct assembly disposed within the liner, the freezer compartment including the frozen liner And the freezer compartment air duct assembly provided in the freezing tank, the refrigerating (or temperature changing) air duct assembly formed by the refrigerating (or temperature changing) air duct assembly and the freezing chamber air duct formed by the freezer compartment air duct assembly. The freezer air duct assembly generally includes a duct front cover and a duct rear cover, and a freezer duct is formed between the duct front cover and the duct rear cover. An air outlet is arranged on the front cover of the air duct, and an air inlet is opened on the rear cover of the air duct, a fan is arranged at the air inlet, and an evaporator is arranged in the freezing chamber. The air duct of the freezer compartment through the air inlet is connected to the space near the evaporator.

Figure 1 is a schematic view showing the structure of the freezer compartment of the existing freezer-cooled (or variable temperature) air-cooled refrigerator. The existing air-cooled refrigerator freezer air duct is as shown in FIG. 1 and includes a freezer compartment air duct 101, an air inlet 102, a fan 103, an air outlet 104, a air supply passage 105, a damper 106, a slider 107, and a water receiving tank 108. The air inlet 102 and the air outlet 104 are disposed in the freezer compartment air duct 101, and the fan 103 is located at the air inlet 102. The air outlets 104 are located on both sides of the air inlet 103. The damper 106 is disposed in the air supply passage 105, and the slider 107 is disposed in the damper 106. The sliding slider 107 can adjust the size of the vent between the freezer compartment air duct 101 and the refrigerating (or temperature changing) chamber air duct. When the refrigerator is working: the outside air is cooled by the evaporator, and then sucked into the freezer compartment air passage 101 through the function of the fan 103 provided at the air inlet 102, and then enters the refrigerating (or temperature changing) chamber air passage from the freezing compartment air passage 101 through the air supply passage 105. To achieve refrigeration in the refrigerator (or temperature change) room and freezer compartment. The amount of air entering the refrigerated (or temperature-changing) duct can be controlled by the damper 106 (or the slider 107) to adjust the temperature of the refrigerated (or temperature-changing) chamber.

In some cases, the hot, humid gas enters the freezer compartment air duct 101 where it condenses into water droplets. For example, since the fan 103 stops working when the refrigerator is opened, hot air enters the interior of the freezer compartment air duct 101 through the air outlet 104, and the water vapor condenses in the lower temperature freezer compartment air passage 101, thereby winding in the freezer compartment. Water droplets or water flows are formed on the wall of the road 101. At this time, since the refrigerator is designed such that the refrigerating (or temperature changing) chamber is located below the freezing chamber, water droplets or water generated in the freezing chamber duct 101 flow into the air blowing passage 105, and then at the damper 106 (or the slider 107). Gathered nearby. When the refrigerator door is closed, the fan 103 restarts operation, the freezer compartment cools down, the water at the damper 106 (or the slider 107) freezes into ice, and the damper 106 (or the slider 107) is frozen and loses regulation of refrigeration ( Or the effect of temperature change on the room temperature, it is possible to freeze the position near the damper 106, so that the air supply passage 105 is completely blocked, so that the lower refrigerating (or temperature changing) chamber cannot be cooled. In the other case, the water flowing down through the damper flows into the refrigerated (or temperature-changing) air duct, or even overflows the outside of the tank. The occurrence of these conditions seriously affects the normal use of the refrigerator.

Summary of the invention

The technical problem to be solved by the present invention is to provide a refrigerator in which the freezer compartment is located above the refrigerating compartment or the variable greenhouse, and has a special structure, which can prevent water droplets or water flowing in the air duct of the freezer compartment from flowing to the damper to freeze or block the wind. Road.

In order to solve the above technical problems, the technical solution adopted by the present invention is:

Providing a refrigerator having an anti-freeze air duct structure, comprising a first storage compartment and a second storage compartment, wherein the first storage compartment is above the second storage compartment; and the first storage compartment is provided with an evaporator;

The refrigerator having an anti-freeze air duct structure further includes a first air duct located in the first storage compartment and a second air duct located in the second storage compartment; the first air duct is provided with a first storage compartment air outlet, The second air duct is provided with a second storage compartment air outlet;

The first air passage is in communication with a space in the vicinity of the evaporator;

The first air duct includes a air supply passage for conveying cold air to the lower second air passage, and the air supply passage is connected to the first air passage and the second air passage, and the opening of the first air passage is opened at the first Underside of the air duct;

a first flow guiding boss and a water outlet are disposed in the first air passage, and the first air guiding boss is located above the opening to block water in the air passage from flowing into the air supply passage and guiding the same to the air duct Outlet.

The first guiding boss is located above the opening of the air supply passage to block the opening of the air supply passage. The water droplets or water flow generated in the air duct of the freezer compartment descends from the top to the bottom, and the water that will flow to the opening of the air supply passage flows to the first flow guiding boss, which is blocked, collected and diverted by the first guiding boss. To the water outlet, keep the air supply passage dry to prevent ice formation.

As an improvement, the first flow guiding boss is provided with a slope for collecting water droplets generated in the first air passage and guiding the water to the water outlet. The guide boss is provided with a slope for better drainage.

As an improvement, the first air passage is composed of a duct front cover and a duct rear cover, and is characterized in that: the two sides of the first guide boss are respectively associated with the air duct front cover and the air duct The cover fits tightly. Both sides of the first flow guiding boss are tightly fitted with the air duct front cover and the air duct rear cover, so that the air blowing passage is completely covered on the projection surface of the bottom surface of the freezing chamber to better protect the air supply passage. Preferably, the airway front cover is further provided with a rib matching the edge of the first flow guiding boss to ensure a fitting effect.

As an alternative, the air supply channel is located below the first flow guiding boss, and the water outlet is disposed at two sides of the air supply channel. The maximum distance between the two ends of the first guiding boss is greater than the maximum distance between the two sides of the opening. The maximum distance between the two ends of the first flow guiding boss is greater than the maximum distance between the two sides of the air blowing channel, so that the projection surface of the bottom surface of the first guiding flow completely covers the air supply channel to better protect the air supply channel.

As an improvement, the two air guiding passages are provided with a second guiding boss protruding toward the middle of the first air passage, and the second guiding boss is provided with a slope for guiding the water to the water outlet. The arrangement of the second flow guiding boss ensures that water dripping or flowing to the bottom surface of the freezing chamber flows toward the water outlet instead of the air supply passage to enhance the protection of the air supply passage.

Preferably, the maximum distance between the two ends of the first guiding boss is greater than or equal to the distance between the highest points of the second guiding bosses on both sides. Here, in order to prevent the backflow of water dripping or flowing to the bottom of the freezer compartment to the air supply passage, the size of the first guide boss is set accordingly, so as to obtain a better flow guiding effect.

As an alternative, the first air passage is composed of a duct front cover and a duct rear cover, and is characterized in that: two sides of the freezer air passage have a waveform protruding toward the inside of the freezer duct and two A wavy structure that protrudes outside the air duct of the freezer compartment. Due to the arrangement of the first flow guiding bosses, the flow of air in the freezer compartment air duct is affected to some extent. The wavy shape of the freezer compartment air duct is designed to match the air splitting effect generated by the boss on the airflow in the air duct, so that the airflow in the air duct of the freezer compartment is smoother and a better freezing effect is obtained.

Preferably, the first air duct is provided with an air inlet, a fan and an air outlet, and the fan is disposed at the air inlet, wherein the first air guiding boss is located between the air inlet and the air supply channel. An air outlet is arranged on both sides of the fan, and air outlets are arranged on both sides of the first flow guiding boss. The arrangement of the upper and lower air outlets makes the airflow exchange in the freezer compartment air duct more smooth.

Preferably, the lowermost end of the lower air outlet is located above the edge of the first guiding boss closest thereto. The lower air outlet is located above the first flow guiding boss to ensure that the collected water flow on the boss does not flow into the lower air outlet to block it.

Compared with the prior art, the invention has the beneficial effects of providing a wind tunnel design for a refrigerating or variable temperature refrigerator in an upper freezing system, and the boss in the air duct is designed to prevent water droplets or water flowing in the air duct of the freezing chamber from flowing to The damper causes it to freeze or block the air duct, preventing the air passage from failing due to icing.

DRAWINGS

1 is a schematic structural view of a freezer freezer air duct;

2 is a schematic structural view of an embodiment of a refrigerator of the present invention;

3 is a schematic structural view of another embodiment of the refrigerator of the present invention;

Figure 4 is a schematic view showing the structure of the freezer compartment of the refrigerator shown in Figure 3;

Figure 5 is an exploded view of the freezer compartment air duct of the refrigerator shown in Figure 3;

Figure 6 is a schematic view showing the structure of still another embodiment of the refrigerator of the present invention.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings.

Example 1:

As shown in FIG. 2, the present invention provides a refrigerator comprising: a freezing compartment 1, a refrigerating compartment 2, and a freezing compartment above the refrigerating compartment. The freezing compartment 1 is provided with a freezer compartment duct 111, that is, a first duct. The refrigerating compartment air duct 21, that is, the second air duct, is provided in the refrigerating compartment. The freezer compartment air duct 111 is provided with an air inlet 112, an air outlet 121, a fan 122, a first flow guiding boss 116 and a water outlet 118. The air inlet 112 is located near the top surface of the freezing compartment 1.

The refrigerating compartment air duct 21 and the freezing compartment duct 111 communicate with each other through the air blowing passage 113. The opening at the junction of the supply air duct and the freezing air duct is located on the bottom surface of the freezing air duct, that is, the restricting surface of the lower portion of the freezing air duct.

An air outlet 211 is provided in the refrigerating compartment air duct 21.

The freezing compartment 1 is also provided with an evaporator (not shown). It is usually installed in the freezer compartment and behind the freezing duct.

A blowing passage 113 is also provided between the freezing compartment air passage 111 and the refrigerating compartment air duct 21. A fan 122 is disposed at the air inlet of the freezing compartment.

The first flow guiding boss 116 is located above the opening position of the connection between the air supply duct and the freezing air duct, and has a sloped structure which protrudes upward in the middle and is inclined downward on both sides to guide the water droplets collected thereon Water outlet 118.

When the refrigerator is in operation, the fan 122 operates to draw the cooling gas in the space near the evaporator from the air inlet 112 into the freezer compartment air passage 111, and the freezer compartment air passage 111 is gradually filled with the cooling gas. A part of the cooling gas flows in the freezer compartment duct 111, and finally is blown out from the air outlet 121, and a part flows into the refrigerating compartment duct 21 through the air passage 113.

When the refrigerator door is opened, the fan 122 stops working, at which time the cooling gas cannot be drawn into the freezer compartment air passage 111 from the air inlet 112, and the external humid hot air flows back from the air outlet 121 into the freezer compartment air passage 111. When the refrigerator door is closed, the fan 122 restarts operation, and the cooling gas near the evaporator enters the freezer compartment duct 111. The cooling gas meets the moist hot air that has previously flowed back into the freezer compartment duct 111 to produce water droplets. After the water droplets are collected on the first flow guiding boss 116, they are guided into the water outlet 118 via the bosses.

Of course, the first flow guiding boss can also be arranged as a unidirectional inclined surface, that is, there is no protrusion in the middle, and the height of one side of the entire upper surface is high, and the height of one side is low, thereby guiding all the water on the upper surface. Flow to a side.

Example 2:

As shown in FIG. 3, the present invention provides a refrigerator comprising: a freezing compartment 1, and a refrigerating compartment 2. The freezer compartment is located above the cold storage compartment. A freezer compartment duct 111, that is, a first duct, is provided in the freezing compartment 1. At the same time, the refrigerating compartment air duct 21, that is, the second air duct, is provided in the refrigerating compartment, and the air outlet 21 is provided in the refrigerating compartment duct 21. The freezer compartment air passage 111 communicates with the refrigerating compartment air duct 21. The freezing compartment 1 is also provided with an evaporator (not shown).

The structure of the freezing duct of the refrigerator of the present invention is specifically shown in Figures 4-5. In this embodiment, the freezer compartment air duct 111 is formed by the air duct front cover 12 and the air duct rear cover 11 being engaged, and at the same time, the air duct front cover 12 and the air duct rear cover 11 are fastened together. The air supply passage 113 is formed. The air supply passage 113 connects the freezing chamber 1 and the refrigerating chamber 2. It should be noted that the air duct front cover and the air duct rear cover have various forms. For example, the air passage front cover may be made of a single support plate, or may be composed of a plastic plate and an insulation layer. The duct front cover may be made of a single support plate or it may be composed of a support plate and an insulation layer. The insulating layer can be selected as a material such as a foam layer. These are all commonly used methods for constituting the freezer air duct of the refrigerator, and the technical solutions of the present invention are applicable. In addition, in the present embodiment, the air supply passage 113 is also formed by the air duct front cover 12 and the air duct rear cover 11 being engaged. In actual production, the air supply passage 113 may also be directly formed in the freezing compartment 1 and refrigerated. On the baffle between the chambers 2.

Specifically, the sides of the freezer compartment air passage 111 have a waveform protruding toward the inside of the freezer compartment air passage (hereinafter referred to as "recessed position") and two waveform structures protruding to the outside of the freezer compartment air passage (hereinafter: "protrusion Position "), so that the entire freezer compartment air passage 111 is substantially four-lobed butterfly-like shape.

Specifically, the air duct rear cover 11 is provided with an air inlet 112, a first air guiding boss 116, a second air guiding boss 117 and a water outlet 118. The first flow guiding boss 116 is located between the air supply passage 113 and the air inlet 112, and has a sloped structure in which the central portion protrudes upward and the both sides are inclined downward. The recessed positions on both sides of the freezer compartment air passage 111 are located above the inclined surface of the boss.

The second flow guiding boss 117 and the water outlet 118 are located on both sides of the air supply passage 113. The water outlet 118 is opened at the lower end of the freezing chamber air passage 111, and the second air guiding protrusion 117 has a slope for guiding the water to the water outlet 118. Both end edges of the first flow guiding boss 116 are located above the inclined surface of the second flow guiding boss 117 to guide the water flow to the inclined surface of the second flow guiding boss 117.

At the same time, after the air duct front cover 12 and the air duct rear cover 11 are fastened, the first air guiding boss 116 closely fits the surfaces of the air duct front cover 12 and the air duct rear cover 11 respectively. That is, the surface projected by the first flow guiding boss 116 toward the bottom surface of the freezing chamber air passage 111 can completely cover the area at the entrance of the air supply passage 113, and the waterproof flow flows from the slit to the air supply passage 113. Of course, the first flow guiding boss 116 may not be in close contact with the surface of the air duct front cover 12. It suffices that the surface projected by the first flow guiding boss 116 toward the bottom surface of the freezing compartment air passage 111 can completely cover the inlet of the air supply passage 113.

Similarly, it is preferable that both sides of the second flow guiding boss 117 are closely adhered to the surfaces of the air duct front cover 12 and the air duct rear cover 11, respectively.

In the figure, the first guiding boss and the second guiding boss are both disposed on the air duct rear cover, and those skilled in the art can also set them on the air duct front cover. As long as the front cover of the air duct and the rear cover of the air duct are fastened, the surface of the first guide vane projected onto the bottom surface of the air duct of the freezer compartment can completely cover the inlet of the air supply passage, and the first guide vane The end edge is located above the slope of the second flow guiding boss to direct the flow of water to the slope of the second flow guiding boss.

A damper 114 is provided in the air supply passage 113, and the amount of air blown to the lower refrigerating compartment 2 is controlled by the opening and closing size of the damper 114, thereby adjusting the temperature of the refrigerating compartment 2.

The air duct front cover 12 is provided with an air outlet 121 including an upper air outlet 1211 and a lower air outlet 1212. The upper air outlet 1211 is located above the air inlets 112 on both sides. The lower air outlet 1212 is located above the inclined surface of the first flow guiding boss 116, and is far away from the first guiding boss 116 as far as practicable, so as to prevent the water flowing in the first guiding boss 116 from flowing into it. The recessed position of the freezer compartment duct 111 is located between the upper air outlet 1211 and the lower air outlet 1212 on the same side. A fan 122 is provided at a position corresponding to the air inlet 112, and the fan is fixed to the air duct front cover. After the air duct front cover 12 and the air duct rear cover 11 are engaged, the fan 122 is aligned with the air inlet 112 to draw cooling air near the evaporator into the air duct. Of course, the fan can also be fixed to the air duct rear cover or fixed by a separate bracket, which is not limited herein.

When the refrigerator is in operation, the gas in the space near the evaporator is cooled by the action of the evaporator, the fan 122 operates, and the cold air near the evaporator is sucked from the air inlet 112 into the freezer compartment duct 111. From the air inlet 112, it spreads to the surroundings and fills the freezer compartment duct 111. After being rectified by the butterfly-winged wave design of the freezer compartment air passage 111, a part of the cold air in the freezer compartment air passage 111 moves upward, is blown to the upper part of the recessed portion of the freezer compartment air passage 111, and then blows out from the upper air outlet 1211, and another part of the cold air direction Under exercise. The downwardly moving cold air encounters the first flow guiding boss 116, is divided into two sides by its bevel structure, and is rectified by the recessed portion of the freezer compartment air passage 111, partially blown out by the lower air outlet 1212, and the other part continues. The downward movement moves into the refrigerating duct 21, and is blown out from the refrigerating compartment air outlet 211 in the refrigerating compartment duct 21 to complete the cold air circulation process of the entire refrigerator. Different from the traditional freezing air duct layout, the air duct layout of the refrigerator of the present invention distributes the cold air to each air outlet reasonably, effectively reducing the wind flow resistance, improving the cold air flow capacity, and improving the cooling efficiency.

When the refrigerator door is opened, the fan 122 temporarily stops working. At this time, there is no cold air entering from the air inlet 112, and the outside humid hot gas enters the freezer compartment air passage 111 through the air outlet 121. Since the temperature in the freezer compartment air passage 111 is low, the water vapor in the hot and humid gas condenses. When the refrigerator is closed, the fan 122 resumes operation, and the temperature in the freezer compartment air passage 111 is further lowered, and the water vapor which has previously flowed back into the freezer compartment air passage 111 through the air outlet 121 is further condensed. In a conventional freezing duct layout, the condensed water droplets flow directly into the lower refrigerating compartment duct 21 along the air supply passage. When the design of the present invention is used, the first flow guiding boss 116 is blocked during the water drop or water flow, and cannot flow vertically into the air supply passage 113, and can only be collected on the first flow guiding boss 116. Due to the first flow guiding boss 116 and the air duct front cover 12 and the air duct rear cover 11. It flows along both sides of the slope to the both sides, and is guided to the water outlet 118 via the second flow guiding boss 117.

Through the design of the boss, the water in the air duct flows to the water outlet, and at the same time, through the design of the shape of the air duct and the position of the air outlet, and the influence of the air flow in the air duct by adding the bosses, the air is evenly distributed to ensure the air passage. Cool air circulation and cooling effect.

Example 3

The difference between this embodiment and the second embodiment is that a part or all of the lower air outlet 1212 is located below the inclined surface of the first flow guiding boss 116. In order to prevent the water flowing down the slope of the first flow guiding boss 116 from flowing into the lower air outlet 1212, the lower air outlet 1212 is frozen. At this time, the lower air outlet 1212 should be far away from the first guiding boss 116. The lower air outlet can be set vertically or horizontally.

As shown in Fig. 6, the lower air outlet 1212 is substantially rectangular. Preferably, in Fig. 6, the length of the side perpendicular to the bottom surface of the refrigerator is greater than the length of the side balanced with the bottom surface of the refrigerator, i.e., vertically. At the same time, the lower air outlet 1212 is disposed at the lower end of the freezer compartment air duct 111, and the central recess of the freezer compartment air passage 111 can completely block the lower air outlet 1212. This design not only avoids the flow of water flowing down the slope of the first flow guiding boss 116 into the lower air outlet 1212, but also ensures that water flowing down the side wall of the freezing chamber air passage 111 does not flow into the lower air outlet 1212, and It is effectively prevented that the lower air outlet 1212 is frozen.

The refrigerator provided in the embodiment of the present invention is described in detail. The principles and embodiments of the present invention are described in the following. The description of the above embodiments is only used to help understand the core idea of the present invention; In the meantime, the present invention is not limited by the scope of the present invention.

Claims

A refrigerator having an anti-freeze blocking air passage structure, comprising a first storage compartment and a second storage compartment, wherein the first storage compartment is above the second storage compartment; and the first storage compartment is provided with an evaporator;

The refrigerator further includes a first air duct located in the first storage compartment and a second air duct located in the second storage compartment; the first air duct is provided with a first storage compartment air outlet, and the second air duct is opened a second storage compartment air outlet;

The first air passage is in communication with a space in the vicinity of the evaporator;

The refrigerator is further provided with an air supply passage for connecting the first air passage and the second air passage, and the opening of the air supply passage and the first air passage is located at a bottom surface of the first air passage;

a first guiding boss and a water outlet are disposed in the first air passage, and the first guiding boss is located above the air blowing passage to block water flowing into the air guiding channel and divert it To the water outlet.
The refrigerator according to claim 1, wherein the first flow guiding boss is provided with a slope for collecting water droplets generated in the first air passage and guiding the water to the water outlet.
The refrigerator with an anti-freeze air duct structure according to claim 1, wherein the first air passage is composed of a duct cover and a duct foam, wherein the two sides of the first guide boss are respectively The duct cover and the duct foam fit tightly.
The refrigerator with anti-freeze air duct structure according to claim 1, wherein the water outlet is disposed at two sides of the air supply passage.
The refrigerator with anti-freeze air duct structure according to claim 4, wherein a maximum distance between the two ends of the first flow guiding boss is greater than a maximum distance between the two sides of the air supply passage.
The refrigerator with anti-freeze air duct structure according to claim 4, wherein two sides of the air supply passage are provided with a second guiding boss protruding toward the middle of the first air duct, and the second guiding flow The boss is provided with a slope that directs the water to the water outlet.
The refrigerator according to claim 6, wherein the maximum distance between the two ends of the first guiding boss is greater than or equal to the distance between the highest points of the second guiding bosses on both sides.
The refrigerator with an anti-freeze air duct structure according to any one of claims 1 to 7, wherein the first air passage is composed of a duct cover and a duct foam, wherein the first air passage has one side on both sides. a waveform protruding toward the inside of the first duct and two waveform structures protruding to the outside of the first duct .
A refrigerator having an anti-freeze air duct structure according to any one of claims 1 to 7, wherein the first air passage is provided with an air inlet, a fan and an air outlet, and the fan is disposed at the air inlet, wherein the A flow guiding boss is located between the air inlet and the air supply channel, and two air outlets are arranged on both sides of the fan, and the air outlets are arranged on both sides of the first flow guiding boss.
The refrigerator according to claim 9, wherein the lowermost end of the lower air outlet is located above the edge of the first guide boss adjacent thereto.