WO2017016441A1

WO2017016441A1 - Refrigerator

Info

Publication number: WO2017016441A1
Application number: PCT/CN2016/090979
Authority: WO
Inventors: 张奎; 吴乔晔; 任宪伟; 朱小兵; 杨忠岭; 贾振飞
Original assignee: 沈阳海尔电冰箱有限公司
Priority date: 2015-07-30
Filing date: 2016-07-22
Publication date: 2017-02-02
Also published as: CN105091450B; CN105091450A

Abstract

A refrigerator comprises a refrigeration chamber (2), and a circulating air duct (3) providing cooling capacity to the refrigeration chamber (2). The refrigeration chamber (2) is formed by a first liner (21) and a door body in an encircling manner. A second liner (22) surrounds the outer side of the first liner (21). The first liner (21) and the second liner (22) are in a sealing connection with each other at openings thereof. A cavity (23) surrounding the outer side of the first liner is formed by the first liner (21) and the second liner (22) in an encircling manner. The second liner (22) is provided thereon with an air inlet (223) communicated with the circulating air duct and used for allowing cold air to enter the cavity, and an air return port (224) used for allowing the air in the cavity to get into the circulating air duct. The cold air in the cavity completes heat exchange with the refrigeration chamber through five liner walls of the first liner, and thus there is a uniform refrigeration to achieve the effects of improving the rate of heat exchange and reducing energy consumption; and meanwhile, the cold air does not come into direct contact with the foods in the refrigeration chamber, thereby realizing the beneficial effect that the foods become less likely to be air-dried, become frozen off and get affected by each other's odors.

Description

refrigerator

Priority is claimed on Japanese Patent Application No. 20151045834, filed on Jan. 30,,,,,,,,,,,,,,,,,

Technical field

The present invention relates to the field of refrigerators, and more particularly to an air-cooled refrigerator having a structure for indirect cooling of a refrigerating compartment.

Background technique

At present, the existing refrigerators are generally divided into two categories: air-cooled refrigerators and direct-cooled refrigerators. The cooling method of the air-cooled refrigerator is usually cooled by the evaporator, and then the cold air is distributed to the various refrigerating compartments through the air duct system, and the cold air directly enters the refrigerating compartment, which has the following disadvantages: (1) the indoor food in the refrigerating room is easy Air drying, affecting the fresh-keeping effect; (2) the food in each refrigerating room is easy to smell; (3) the evaporator is easy to frost, need to be heated and defrosted, the power consumption is large and the defrosting water is not easy to handle.

The cooling method of the direct-cooling refrigerator is that the cooling amount generated by the evaporator directly cools the cooling compartment, and the evaporator is installed in the refrigerating compartment or outside the refrigerating compartment, which has the following disadvantages: (1) the refrigerator interior is close to the inner wall. It is frozen and destroyed; (2) It needs to be powered off and de-iced when deicing. The operation is cumbersome and unfavorable to the press.

In view of this, it is necessary to improve the existing refrigerator to solve the above problems.

Summary of the invention

It is an object of the present invention to provide an air-cooled refrigerator having a structure for indirect cooling of a refrigerating compartment.

In order to achieve the above object, the present invention adopts the following technical solution: a refrigerator including a refrigerating compartment, providing a cooling air circulation duct to the refrigerating compartment, the refrigerating compartment being surrounded by a first inner tank and a door body Forming, the refrigerator further includes a second inner casing surrounding the outer side of the first inner casing, the first inner casing is sealingly connected with the opening of the second inner casing, the first inner casing and the second inner casing The inner casing encloses a cavity surrounding the outer side of the first inner casing, and the second inner casing is provided with an air inlet communicating with the circulating air passage for supplying cold air into the cavity and the circulating air The passage communicates with the return air of the gas in the cavity into the circulation duct.

As a further improvement of the technical solution of the present invention, the inner wall of the second inner casing or the outer wall of the first inner casing is provided with a plurality of the outer casings when the second inner casing is sleeved outside the first inner casing. Positioning bumps for positioning the two liners.

As a further improved technical solution of the present invention, a plurality of the positioning protrusions are distributed on an inner wall of the second inner tank or an outer wall of the first inner tank.

As a further improved technical solution of the present invention, a plurality of the positioning protrusions are distributed on five inner walls of the second inner tank or five outer walls of the first inner tank.

According to a further improvement of the present invention, the positioning protrusion is disposed on an inner wall of the second inner casing, the positioning protrusion includes a fixed end fixed to an inner wall of the second inner casing, and When the two inner sleeves are sleeved on the outer side of the first inner liner, they abut against the abutting portion of the outer wall of the first inner bladder liner.

As a further improvement of the technical solution of the present invention, the positioning protrusion is disposed on an outer wall of the first inner casing, the positioning protrusion comprises a fixed end fixed to the outer wall of the first inner casing, and When the two inner sleeves are sleeved on the outer side of the first inner liner, they abut against the abutting portion of the inner wall of the second inner liner.

As a further improvement of the present invention, the abutting portions of the plurality of positioning protrusions are equidistant from the end of the fixed end to the inner wall of the second inner tube fixing the fixed end.

As a further improvement of the technical solution of the present invention, the abutting portions of the plurality of positioning protrusions are equidistant from the end of the fixed end to the outer wall of the first inner liner fixing the fixed end.

As a further improvement of the technical solution of the present invention, the air inlet is disposed on a bottom gallstone wall of the second inner tank, and the air return opening is disposed on a top gallstone wall of the second inner tank.

As a further improved technical solution of the present invention, the air inlet is disposed on a top biliary wall of the second inner tank, and the air return opening is disposed on a bottom biliary wall of the second inner tank.

Compared with the prior art, the present invention forms a cavity surrounding the outer side of the first inner liner by arranging a second inner liner on the outer side of the first inner chamber of the refrigerating compartment, and is disposed on the second inner bladder wall. The air inlet and the return air port which are connected to the circulating air passage make the cavity communicate with the circulating air passage. The cold air in the circulation duct enters the cavity through the air inlet on the second inner wall, and the cold air in the cavity exchanges heat with the refrigerating compartment through the five gallbladder walls of the first inner tank, thereby simultaneously from five faces Uniform cooling of the refrigerating compartment to improve the heat exchange rate and reduce the energy consumption; at the same time, the cold air does not directly contact the food in the refrigerating compartment, so that the food is not easy to dry, not easy to freeze, and the refrigeration compartment is not easy to odor. .

DRAWINGS

1 is a schematic perspective view of a refrigerator of the present invention.

2 is a schematic view of the first inner casing of the refrigerator of the present invention separated from the second inner casing.

Figure 3 is a schematic view of another angle of Figure 2.

4 is a schematic structural view of the first inner casing and the second inner casing of the refrigerator of the present invention.

Figure 5 is a cross-sectional view of the refrigerator of the present invention taken along line A-A of Figure 4;

Figure 6 is a schematic view showing the internal structure of the refrigerator of the present invention.

detailed description

The present invention will be described in detail below with reference to the drawings and specific embodiments.

Referring to FIG. 1 to FIG. 6 , the present invention discloses a refrigerator 100 including a cabinet 1 and a door body (not shown), which are formed by the box body 1 and the door body. The refrigerating compartment 2 is provided with a circulation duct 3 for supplying a cooling amount to the refrigerating compartment 2, and a cooling chamber 4 for communicating an evaporator (not shown) in communication with the circulation duct 3.

Specifically, the refrigerating compartment 2 is formed by a first inner casing 21 and a door body. The outer side of the first inner casing 21 is further provided with a second inner casing 22 having an overall larger size than the first inner casing 21 . The first inner tube 21 and the opening of the second inner tube 22 are sealingly connected by glue or the like, so that the first inner tube 21 and the second inner tube 22 are encircled to form the first inner tube. The cavity 23 outside the bladder 21.

The second inner tank 22 is further provided with an air inlet 223 communicating with the circulating air passage 3 for supplying cold air into the cavity 23 and communicating with the circulating air passage 3 for gas in the cavity 23 to enter the circulation. The first return air 224 of the air duct 3.

The cavity 23 communicates with the circulation duct 3 through the air inlet 223 and the first air return 224. The cavity The cold air in the 23 is uniformly cooled from the five facing the refrigerating compartment 2, thereby increasing the heat exchange area between the cold air in the cavity 23 and the refrigerating compartment 2, improving the heat exchange efficiency, and achieving the effect of rapid cooling; The cold air does not directly contact the food in the refrigerating compartment 2, thereby achieving the beneficial effects that the food is not easily dried, not easily frozen, and the refrigeration compartments are not easily scented.

Specifically, in the embodiment, the air inlet 223 is disposed on a bottom wall (not labeled) of the second inner casing 22, and the first air return 224 is disposed on the top of the second inner casing 22 On the wall (not labeled), the cold air enters the cavity 23 from the bottom of the cavity 23 through the air inlet 223, so that hot air in the upper portion of the cavity 23 passes through the first air return port 224 Entering the circulation duct 3, the energy saving effect is achieved.

In another embodiment, since the cold air sinks in the cavity 23, the hot air rises, and in order to make the temperature of the air in the cavity 23 relatively uniform, the air inlet 223 may be disposed in the second inner portion. On the top biliary wall of the bladder 22, the first return air vent 224 is disposed on the bottom biliary wall of the second inner bladder 22.

Between the outer wall 211 of the first inner casing 21 and the inner wall 221 of the second inner casing 22, a plurality of the second inner casing 22 are disposed on the outer side of the first inner casing 21 The positioning member 222 of the second inner casing 22 is positioned.

Specifically, the positioning bump 222 includes a fixed end (not labeled) and an abutting portion (not labeled). In this embodiment, the positioning protrusion 222 is disposed on the inner wall 221 of the second inner casing 22, and the fixed end of the positioning protrusion 222 is fixed on the inner wall 221, and the positioning protrusion 222 is abutted. The joint protrudes outward from the fixed end and abuts against the outer wall 211 of the first inner tank 21. At the same time, in order to simplify the manufacturing process of the refrigerator 100 and reduce the cost, the positioning protrusion 222 is formed by the inner surface of the second inner tube 22 being inwardly recessed.

Specifically, a plurality of the positioning protrusions 222 are evenly distributed on the five inner walls 221 of the second inner tube 22, thereby stably fixing the second inner tube 22 to the outer side of the first inner tube 21, The second bladder 22 is prevented from moving. The distance between the abutting portion of the positioning protrusion 222 and the inner wall 221 of the second inner tube 22 fixed to the fixed end is equal, so that any bile wall of the second inner tube 22 (not labeled) The distance between the biliary wall (not numbered) corresponding to the first inner liner 21 and the other biliary wall (not numbered) of the second inner bladder 22 and the biliary wall (not numbered) corresponding to the first inner liner 21 The distance is equal; the distance between the upper gallbladder wall of the second inner liner 22 and the upper bile wall of the first inner bladder 21 is equal to the distance from the rear bile wall of the second inner bladder 22 to the rear bile wall of the first inner bladder 21 . Therefore, when the cold air enters the cavity 23, the distribution is relatively uniform, and the evenly distributed cold air in the cavity 23 is uniformly cooled from the five facing refrigerating compartments 2, so that the temperature in the refrigerating compartment 2 is relatively uniform.

In another embodiment, the positioning protrusion 222 is disposed on the outer wall 211 of the first inner casing 21, and the fixed end of the positioning protrusion 222 is fixed on the outer wall 211, and the positioning protrusion 222 The abutting portion protrudes outward from the fixed end and abuts against the inner wall 221 of the second inner casing 22. The difference between the embodiment and the above embodiment further includes that the positioning protrusion 222 protrudes outward from the outer wall 211 of the first inner liner 21, and is not formed by the first inner liner 21; the other structure is This will not be repeated here.

The circulation duct 3 includes a supply duct 31 for feeding cold air into the cavity 23, and an air return duct 32 for feeding the gas in the cavity 23 into the circulation duct 3. The air supply duct 31 is in communication with the air inlet 223; the return air duct 32 is in communication with the first air return port 224.

The cooling chamber 4 is provided on the rear side of the refrigerating compartment 2. The cooling chamber 4 is provided with an air outlet (not labeled) that communicates with the air supply passage 31 for the cold air to enter the air supply duct, and communicates with the return air passage 32 to allow the gas in the return air passage 32 to enter the air inlet. The second return air port (not numbered) of the cooling chamber 4. The cooling chamber 4, the circulation duct 3 and the cavity 23 form a relatively closed space, so that water vapor in the refrigerating compartment 2 does not enter the circulation duct 3, and the evaporator in the cooling chamber 4 No frosting, so there is no need to heat the defrosting, so there is no need to set the corresponding defrosting components, which saves costs.

As shown in FIGS. 1 to 6, the air-cooled refrigerator having the structure for indirect cooling of the refrigerating compartment 2 according to the present invention is applied to a refrigerator having one or more refrigerating compartments 2; The freezer compartment 25 below the refrigerating compartment 24 has two refrigerators 100 of the refrigerating compartment 2.

The refrigerating chamber 24 is formed by a first refrigerating chamber 241 and a door body (not shown). The first refrigerating chamber 241 is surrounded by a second refrigerating chamber 242 to form a surrounding The refrigerating chamber cavity (not shown) of the indoor chamber 241 is refrigerated. The freezing compartment 25 is formed by a first freezing chamber 251 and a door body (not shown), and the first freezing chamber 251 is surrounded by a second freezing chamber 252 to form the first surrounding The freezer cavity (not shown) of the inner chamber 251 is frozen.

The refrigerating chamber 24 and the freezing chamber 25 share a cooling chamber 4, and a fan (not shown) is disposed under the evaporator in the cooling chamber 4, and the air outlet of the cooling chamber 4 passes through the air supply duct 31 respectively. And an air inlet (not shown) on the second refrigerating chamber 242 and an air inlet (not shown) on the second freezing chamber 252; the second air outlet of the cooling chamber 4 passes The return air passages 32 are respectively connected to the first refrigerating compartment return air inlet (not shown) on the second refrigerating compartment 242 and the first freezing compartment return air outlet (not shown) on the second freezing inner chamber 252. According to the temperature setting request of the refrigerating compartment 24 and the freezing compartment 25, the amount of cold air entering each compartment is controlled by a baffle (not shown).

In summary, the present invention forms a cavity 23 surrounding the outside of the first inner casing 21 by arranging the second inner casing 22 outside the first inner casing 21 of the refrigerating compartment 2. A positioning protrusion 222 for positioning the second inner casing 22 when the second inner casing 22 is sleeved outside the first inner casing 21 is disposed on the inner wall 221 of the second inner casing 22 The abutting portions of the plurality of positioning protrusions 222 are equidistant from the end of the fixed end to the inner wall 221 of the second inner tube 22 fixed to the fixed end, such that any bile wall of the second inner tube 22 is The distance of the corresponding biliary wall of the first bladder 21 is equal to the distance between the other biliary wall of the second bladder 22 and the corresponding biliary wall of the first bladder 21. And, by providing the air inlet 223 and the first air return port 224 which communicate with the circulation duct phase 3 on the second inner casing 22, the cavity 23 communicates with the circulation duct 3.

The cold air in the circulation duct 3 enters the cavity 23 through the air inlet 223 on the second inner tank 22, and the cold air in the cavity 23 passes through the five gallbladder walls of the first inner tank 22 and the refrigerating compartment 2 Heat exchange, cold air is evenly distributed on the outer side of the first inner tank 22 while uniformly cooling from the five facing refrigerating compartments 2, thereby achieving an effect of increasing heat exchange rate, reducing energy consumption and uniform cooling; and the cold air is not associated with the refrigerating room. The food in the chamber 2 is in direct contact, so that the food is not easily dried, not easily frozen, and the refrigeration room 2 is not easy to odor.

The above embodiments are only used to illustrate the technical solutions of the present invention, and the present invention is not limited thereto. Although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or substituted. And the spirit and scope of the technical solution of the present invention.

Claims

A refrigerator, comprising a refrigerating compartment, providing a cooling air circulation duct to the refrigerating compartment, wherein the refrigerating compartment is formed by a first inner tank and a door body, wherein the refrigerator further comprises a surrounding a second inner casing on the outer side of the first inner casing, the first inner casing is sealingly connected to the opening of the second inner casing, and the first inner casing and the second inner casing are encircled to form a surrounding a cavity on the outer side of the first inner casing, wherein the second inner casing is provided with an air inlet communicating with the circulating air passage for supplying cold air into the cavity and communicating with the circulating air passage for the inner cavity The gas enters the return air vent of the circulation duct.
The refrigerator according to claim 1, wherein an inner wall of the second inner casing or an outer wall of the first inner casing is provided with a plurality of outer sleeves when the second inner sleeve is sleeved outside the first inner casing. A positioning bump that positions the second inner casing.
The refrigerator according to claim 2, wherein a plurality of said positioning projections are distributed on an inner wall of said second inner casing or an outer wall of said first inner casing.
A refrigerator according to claim 3, wherein a plurality of said positioning projections are distributed on five inner walls of said second inner casing or on five outer walls of said first inner casing.
The refrigerator according to claim 3, wherein the positioning protrusion is disposed on an inner wall of the second inner casing, and the positioning protrusion comprises a fixed end fixed to an inner wall of the second inner casing and The second inner sleeve abuts against the abutting portion of the outer wall of the first inner liner when the second inner sleeve is sleeved outside the first inner liner.
The refrigerator according to claim 3, wherein the positioning protrusion is disposed on an outer wall of the first inner casing, and the positioning protrusion comprises a fixed end fixed to the outer wall of the first inner casing and The second inner sleeve abuts against the abutting portion of the inner wall of the second inner liner when the second inner sleeve is sleeved outside the first inner casing.
The refrigerator according to claim 5, wherein the abutting portions of the plurality of positioning projections are equidistant from an end of the fixed end to an inner wall of the second inner liner that fixes the fixed end.
The refrigerator according to claim 6, wherein the abutting portions of the plurality of positioning projections are equidistant from an end of the fixed end to an outer wall of the first inner liner that fixes the fixed end.
The refrigerator according to claim 1, wherein said air inlet is provided on a bottom bilge wall of said second inner casing, and said return air opening is provided on a top biliary wall of said second inner casing.
The refrigerator according to claim 1, wherein said air inlet is provided on a top bilge wall of said second inner casing, and said return air opening is provided on a bottom bilge wall of said second inner casing.