CN107421167A - Single system wind cooling refrigerator - Google Patents

Abstract

The invention discloses a single-system air-cooled refrigerator, comprising at least one refrigerated compartment; an evaporator, an air supply duct, a return air duct, and at least one set of heat exchanging fins; the heat exchanging fins include: two independently arranged Heat exchange fins and heat pipes connecting the two heat exchange fins. The heat pipes are used to realize heat conduction between the two heat exchange fins; one of the heat exchange fins is set in the air supply duct; the other heat exchange fin is set in the refrigerating room Indoor or close to the evaporator; during the cooling process of the refrigerated room, the heat dissipated by the heat exchange fin in the air supply duct is always lower than the heat dissipated by the other heat exchange fin; the heat of the heat exchange fin with higher heat is conducted through the heat pipe At the same time, the air cooled by the evaporator enters the air supply duct, passes through the heat exchange fins in the air supply duct, and then enters the refrigerated compartment. The invention has lower cost and ensures better refrigeration effect of the refrigerated compartment.

Description

Single system air-cooled refrigerator

technical field

The invention relates to the field of household appliances, in particular to a single-system air-cooled refrigerator.

Background technique

In the prior art, refrigerators generally refer to single-door, double-door, double-temperature, three-door, three-temperature, and cabinet-type multi-door refrigerators, which generally have independent freezers and refrigerators for separate storage according to different storage temperatures. The refrigeration principle of this refrigerator-freezer is divided into direct cooling and air cooling. Direct-cooling refrigeration systems often use solenoid valves to control the flow of refrigerant, and supply refrigerant to the evaporators of each refrigerating (freezing) room to cool each space to the required temperature. Air-cooled refrigerators and freezers need to set up corresponding air ducts to supply air to each space.

Compared with direct-cooling refrigerators, air-cooled refrigerators have a relatively average indoor temperature without large temperature changes, and the cooling effect is naturally better. For single-system air-cooled refrigerators, the refrigerating room and the freezing room share an evaporator. , usually, the distribution ratio of the air volume blowing to the refrigerated compartment and the freezer compartment is not easy to control, and it is more difficult to achieve the ideal situation due to the change of the ambient temperature and the gear position.

If the single-system air-cooled refrigerator wants to achieve a small temperature difference between the compartments, it needs a certain amount of air volume. When the refrigerator compartment and the freezer compartment are both turned on for cooling, the temperature of the refrigerator compartment is much higher than that of the freezer compartment. When the air temperature in the storage room is low, the temperature of the refrigerated room drops rapidly, resulting in large fluctuations in the temperature of the refrigerated room.

For single-system air-cooled refrigerators, in order to reduce the problem of large temperature fluctuations in the refrigerated compartment of the prior art, the current solution is mainly the micro-air duct method, that is, an air duct is divided into multiple layers, and a temperature sensor is installed on each layer to use It is used to monitor the temperature change of each layer, and then control the cooling capacity of the source. However, this method will significantly increase the cost of the refrigerated air duct. The problem of large fluctuations.

The second prior art adopts frequency conversion fan, and by using frequency conversion compressor and its control system, the temperature fluctuation of the refrigerating room can be reduced, but the temperature fluctuation is not in the ideal range, and the cost of frequency conversion compressor and frequency conversion control system is very high .

Contents of the invention

The object of the present invention is to provide a single-system air-cooled refrigerator.

In order to achieve the purpose of the above invention, the single-system air-cooled refrigerator provided by the present invention includes: a box body, which defines and forms at least one refrigerated compartment;

an evaporator for cooling the air passing through it;

an air supply duct configured to supply air cooled by the evaporator to the refrigerated compartment;

a return air duct configured to deliver air from the refrigerated compartment to the evaporator for cooling;

At least one set of heat exchanging fins, the heat exchanging fins include: two independently arranged heat exchanging fins and heat pipes connecting the two heat exchanging fins, the heat pipes are used to realize heat conduction between the two heat exchanging fins ;

One of the heat exchange fins is arranged in the air supply duct;

Wherein another piece of heat exchanging fins is set in the refrigerated room or close to the evaporator;

During the cooling process of the refrigerated compartment, the heat dissipated by the heat exchange fin in the air supply duct is always lower than the heat dissipated by the other heat exchanging fin; the heat of the heat exchanging fin with higher heat is conducted to the The heat exchanging fins with lower heat; at the same time, the air cooled by the evaporator enters the air supply duct, passes through the heat exchanging fins in the air supply duct, and then enters the refrigerated compartment.

As a further improvement of one embodiment of the present invention, another heat exchange fin is arranged in the refrigerated compartment;

The air supply duct includes: an air supply inlet arranged toward the evaporator side, and an air supply outlet arranged toward the direction of the refrigerated compartment;

The heat exchanging fins arranged in the refrigerated compartment are arranged away from the air outlet.

As a further improvement of an embodiment of the present invention, another sheet of heat exchange fins is disposed close to the evaporator and below the evaporator.

As a further improvement of an embodiment of the present invention, another heat exchange fin is arranged close to the evaporator;

The return air duct includes: a return air outlet disposed toward the evaporator side, and a return air inlet disposed toward the refrigerated compartment;

The heat exchanging fins arranged near the evaporator are arranged near the return air outlet.

As a further improvement of an embodiment of the present invention, the single-system air-cooled refrigerator further includes: at least one set of compensation heat exchange fins;

The compensation heat exchange group includes: two independently arranged compensation heat exchange fins and a compensation heat pipe connecting the two compensation heat exchange fins, and the compensation heat pipe is used to realize heat conduction between the two compensation heat exchange fins;

Among them, two compensating heat exchange fins are respectively arranged in the air supply duct and the return air duct;

During the cooling process of the refrigerated compartment, the heat of the compensation heat exchange fins in the return air duct is conducted to the compensation heat exchange fins in the air supply duct through the heat pipe; at the same time, the air cooled by the evaporator enters the The air supply air duct enters the refrigerated compartment after passing through the heat exchange fins and compensation heat exchange fins in it, and the air passing through the refrigerated compartment enters the return air duct and passes through the compensation heat exchange fins in it. After the sheet is exchanged, it is transported to the evaporator for cooling.

As a further improvement of an embodiment of the present invention, the air supply duct includes: an air supply inlet disposed toward the evaporator side, and an air supply outlet disposed toward the refrigerated compartment;

The air supply outlet is arranged near the top of the refrigerated compartment.

As a further improvement of an embodiment of the present invention, the return air duct includes: a return air outlet disposed toward the evaporator side, and a return air inlet disposed toward the refrigerated compartment;

The return air inlet is arranged near the bottom of the refrigerated compartment.

As a further improvement of an embodiment of the present invention, the heat pipe is hollow and filled with refrigerant.

As a further improvement of an embodiment of the present invention, the materials of the two heat exchange fins are both copper or aluminum.

As a further improvement of an embodiment of the present invention, the single-system air-cooled refrigerator further includes: a fan, which is arranged between the evaporator and the air supply duct, and is used to cool the air through the evaporator The air is introduced into the air supply duct.

Compared with the prior art, the beneficial effect of the present invention is that the cost of the single-system air-cooled refrigerator of the present invention is relatively low, and the cooling capacity conducted by the evaporator remains unchanged, and the air supply can be improved by adding heat exchange fins. The cold air in the air duct conducts heat exchange during the circulation process to increase the temperature of the cold air transported to the refrigerated room through the air supply duct, thereby ensuring the cold supply of the refrigerated room during the cooling process and maintaining the refrigerated room. The small temperature fluctuation difference achieves a better cooling effect, which is conducive to keeping food fresh in the refrigerator compartment, preventing frostbite, and meeting the different needs of users.

Description of drawings

Fig. 1 is a schematic structural view of a single-system air-cooled refrigerator according to a first embodiment of the present invention.

Fig. 2 is a schematic structural view of a single-system air-cooled refrigerator according to a second embodiment of the present invention.

Fig. 3 is a schematic structural view of a single-system air-cooled refrigerator according to a third embodiment of the present invention.

Fig. 4 is a schematic structural view of a single-system air-cooled refrigerator according to a fourth embodiment of the present invention.

Fig. 5 is a schematic structural view of a single-system air-cooled refrigerator according to a fifth embodiment of the present invention.

Fig. 6 is a schematic structural view of a single-system air-cooled refrigerator according to a sixth embodiment of the present invention.

Fig. 7 is a schematic structural view of a single-system air-cooled refrigerator according to a seventh embodiment of the present invention.

Fig. 8 is a schematic structural view of a single-system air-cooled refrigerator according to an eighth embodiment of the present invention.

Fig. 9 is a schematic structural view of a single-system air-cooled refrigerator according to a ninth embodiment of the present invention.

Fig. 10 is a schematic structural view of a single-system air-cooled refrigerator according to the tenth embodiment of the present invention.

Fig. 11 is a schematic structural view of a single-system air-cooled refrigerator according to an eleventh embodiment of the present invention.

Fig. 12 is a schematic structural view of a single-system air-cooled refrigerator according to a twelfth embodiment of the present invention.

Fig. 13 is a schematic structural view of a single-system air-cooled refrigerator according to the thirteenth embodiment of the present invention.

Fig. 14 is a schematic structural view of a single-system air-cooled refrigerator according to the fourteenth embodiment of the present invention.

Fig. 15 is a schematic structural view of a single-system air-cooled refrigerator according to the fifteenth embodiment of the present invention.

Fig. 16 is a schematic structural view of a single-system air-cooled refrigerator according to the sixteenth embodiment of the present invention.

Fig. 17 is a schematic structural view of a single-system air-cooled refrigerator according to the seventeenth embodiment of the present invention.

Fig. 18 is a schematic structural view of a single-system air-cooled refrigerator according to an eighteenth embodiment of the present invention.

detailed description

The present invention will be described in detail below in conjunction with specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.

It should be noted that, in each of the following embodiments, the "front", "rear", "upper", "lower", "left" and "right" do not represent absolute distinctions in structure or function, but only It is for the clarity and convenience of description; and, in different implementations, the same symbols or signs may be used, which do not represent any structural or functional connections; in addition, multiple examples appear in the following implementations, multiple In the embodiment, the components with the same structure are represented by unified characters and the same labels. For different components, they may also be expressed with the same characters, but they are all distinguished by different labels, so that the solution of the present invention Be clear.

1 to 18, the single-system air-cooled refrigerator disclosed by the present invention includes a box body, and the box body defines a plurality of refrigerated compartments, which are respectively a refrigerated compartment 10, a soft freezer compartment 20 and a freezer compartment 30. Generally speaking, the refrigerating compartment 10, the soft freezing compartment 20, and the freezing compartment 30 are arranged from top to bottom. For the convenience of description, in the following examples of the present invention, the direction in which the refrigerating compartment 10, the soft freezing compartment 20, and the freezing compartment 30 are arranged from top to bottom is defined as the height direction of the single-system air-cooled refrigerator. The direction of the refrigerator facing the single-system air-cooled refrigerator door and facing away from the single-system air-cooled refrigerator door is defined as the thickness direction of the single-system air-cooled refrigerator, and the direction perpendicular to the height direction and thickness direction is defined as the width direction of the single-system air-cooled refrigerator . The single-system air-cooled refrigerator also has an evaporator 40 and a fan 50. The evaporator 40 is arranged at the rear of the freezer compartment 30 of the box body to cool the air flowing through it; An evaporator cavity (not shown) is used to accommodate the evaporator 40 and the fan 50; the evaporator cavity is arranged near the rear of the freezing compartment. The blower 50 is arranged between the evaporator 40 and the air duct, and is used for introducing the air cooled by the evaporator 40 into the air duct. The evaporator 40 can be any known evaporator, such as one of fin evaporator, wire tube evaporator, blown type evaporator and plate tube evaporator. In this embodiment, the single-system air-cooled refrigerator forms a compression refrigeration cycle system through a compressor (not shown), a condenser (not shown) and an evaporator, and the fan 50 introduces the cold air from the evaporator 40 into the refrigerated room through the air duct. Compartment 10, soft freezer 20 and freezer compartment 30. When working, the compressor promotes the circulation of the refrigerant, the refrigerant entering the evaporator 40 absorbs heat and evaporates, and the fan 50 circulates the cold air to the corresponding refrigeration compartment through the air duct.

As shown in FIG. 1 to FIG. 13 , in the single-system air-cooled refrigerator shown in the present invention, the air duct includes: an air supply air duct 60 configured to send the air cooled by the evaporator 40 to the refrigerated compartment supply; return air duct 70 configured to deliver air from the refrigerated compartment to the evaporator for cooling.

Preferably, the air supply duct 60 includes: an air supply inlet 61 disposed toward the side of the evaporator 40 , and an air supply outlet 62 disposed towards the direction of the refrigerated compartment 10 ; 70 includes: a return air outlet 71 arranged toward the side of the evaporator 40, and a return air inlet 72 arranged toward the direction of the refrigerated compartment; correspondingly, the air supply inlet 61 and the return air outlet 71 The setting position relative to the evaporator 40 and the setting positions of the air supply outlet 62 and the return air inlet 72 relative to the refrigerated compartment can be adjusted according to needs; The top of the refrigerated compartment 10 is provided. The return air inlet 72 is arranged near the bottom of the refrigerated compartment 10 , the air supply inlet 61 is arranged near the top of the evaporator 40 , and the return air outlet 71 is arranged near the bottom of the evaporator 40 .

Of course, the above air duct setting is only described for the air duct for the refrigerated compartment. In practical applications, the air duct also includes: the air duct for the freezer compartment, the air duct for the soft freezer, etc. In the following description, The corresponding specific description will also be involved.

Further, the refrigerator further includes: a channel switch 80 provided corresponding to the air supply duct 60 and the return air duct 70, and the channel switch 80 can selectively open or close the air supply duct 60 and/or the air return duct 70. At least one opening of the return air duct 70 is described, and the opening includes: an air supply inlet 61 , a supply air outlet 62 , a return air inlet 71 and a return air outlet 72 . The channel switch includes: an air supply switch and/or a return air switch (not shown separately); the air supply switch is used to selectively block the air cooled by the evaporator 40 from entering the refrigerated compartment 10; The switch is used to selectively block the delivery of air in the refrigerated compartment 10 to the evaporator 40 .

In a specific embodiment of the present invention, an accommodating space is formed between the casing (not shown) of the box and the inner tank (not shown); the air supply duct 60 and the return air duct 70 are both arranged in In the accommodating space formed by the housing and the inner tank rear wall; and the air supply duct and the return air duct are respectively set close to the two side walls of the inner tank to achieve a better cooling effect , and maintain the temperature of the cold air circulating in the air supply duct 60 and the return air duct 70 .

As shown in FIG. 1 , the single-system air-cooled refrigerator provided by the first embodiment of the present invention further includes: at least one set of heat exchanging fins 81, and the heat exchanging group 81 includes: two independently arranged heat exchanging fins ( 81a, 81b) and the heat pipe 81c connecting the two heat exchange fins (81a, 81b), the heat pipe 81c is used to realize the heat conduction between the two heat exchange fins (81a, 81b); the two heat exchange fins (81a , 81b) are respectively arranged in the air supply duct 60 and the return air duct 70; during the cooling process of the refrigerated compartment 10, the heat of the heat exchange fins 81b in the return air duct 70 is conducted to the The heat exchange fins 81a in the air supply duct 60; at the same time, the air cooled by the evaporator 40 enters the air supply duct 60 and enters the refrigerated compartment 10 after passing through the heat exchange fins 81a in it. , the air passing through the refrigerated compartment 10 enters the return air duct 70 , passes through the heat exchanging fins 81b therein, and then is transported to the evaporator 40 for cooling.

Preferably, the heat exchange fins 81 a in the air supply duct 60 are arranged close to the air supply inlet 61 . The heat exchanging fins 81 b in the return air duct 70 are arranged close to the return air inlet 72 . In this way, a better cooling effect of the refrigerated compartment is achieved.

In a specific embodiment of the present invention, the heat pipe 81c is hollow and filled with refrigerant. The two heat exchanging fins (81a, 81b) are made of copper or aluminum to better ensure the heat exchange between the two fins (81a, 81b) with different temperatures.

It can be understood that the thickness, width and shape of the heat exchange fins (81a, 81b) can be specifically adjusted according to needs. When the width is larger and the thickness is thicker, the temperature of the cold air passing through it will change more. Do go into detail.

In order to facilitate understanding of the present invention, the following describes a specific application scenario of a single-system air-cooled refrigerator according to the first embodiment of the present invention.

Assuming that the refrigerator is in normal operation, the temperature of the air passing through the evaporator 40 is -20°C, and the temperature in the refrigerating room is 8°C.

During the cooling process of the refrigerated compartment of a single-system refrigerator, the -20°C cold air passing through the evaporator 40 is introduced into the air supply duct 60 from the air supply inlet 61 through the fan 50 , and the heat exchange fin group 81 is not installed. The temperature of the cold air entering the refrigerated compartment 10 through the air supply outlet 62 will remain at the temperature at the time of entering the air supply duct 60, i.e. -20°C, and the temperature of the cold air delivered to the evaporator 40 through the return air outlet 71 will be The temperature of the refrigerated compartment 10, namely 8°C, was maintained.

After the heat exchange fin group 81 is added in this embodiment, the temperature of the heat exchange fin 81b is higher than the temperature of the heat exchange fin 81a. In this way, the heat pipe 81c plays the role of heat conduction, and conducts heat from the higher temperature heat exchange fin 81b to the heat exchange fin 81b. The heat exchanging fins 81 a with relatively low heat, that is, the heat is transferred from the return air duct 70 to the air supply duct 60 . Correspondingly, after entering the air supply duct 60 from the air supply inlet 61, the cold air at -20°C passes through the heat exchange fin 81a, and its temperature will rise, for example, to -17°C. After entering the return air duct 70 , the temperature of the cold air at 8° C. will decrease, for example, to 5° C., after passing through the heat exchange fins 81 b. In this way, without changing the operation of the evaporator 40 and the fan 50, the temperature of the cold air delivered to the refrigerated compartment 10 through the air supply outlet 62 is increased, and the temperature of the cold air delivered to the evaporator 40 through the return air outlet 71 is increased. Reduce and reduce the large problem of temperature fluctuations in each compartment during the cooling process of the refrigerated compartment.

Of course, by changing the shape, thickness, width, and quantity of the heat exchange fins, the adjustment range of the temperature of the cold air passing through them can be specifically set according to needs, and will not be described in detail here.

In the single-system air-cooled refrigerator of the first embodiment of the present invention, under the condition that the amount of cold conducted by the evaporator remains unchanged, the cold air in the air supply duct and the cold air in the return air duct are heated by adding heat exchange fins. Exchange, in order to reduce the temperature difference between the air supply duct and the return air duct, so as to ensure the cold supply of the refrigerating room and the freezing room during the cooling process, and at the same time ensure a better cooling effect of the refrigerating room, which is conducive to refrigeration The food in the compartment is kept fresh to prevent frostbite and meet the different needs of users.

The single-system air-cooled refrigerators shown in Fig. 2, Fig. 3, Fig. 4, and Fig. 5 also include: at least one set of heat exchanging fins, and the heat exchanging group includes: two independently arranged heat exchanging fins and A heat pipe connecting two heat exchange fins, the heat pipe is used to realize heat conduction between the two heat exchange fins; one of the heat exchange fins is arranged in the air supply duct; the other heat exchange fin is arranged in the Set in the refrigerated room or close to the evaporator; during the cooling process of the refrigerated room, the heat dissipated by the heat exchange fin in the air supply duct is always lower than the heat dissipated by the other heat exchange fin; The heat of the heat exchange fins is conducted to the heat exchange fins with lower heat through the heat pipes; at the same time, the air cooled by the evaporator enters the air supply duct, passes through the heat exchange fins in the air supply duct, and then enters the The refrigerated compartment.

Specifically, as shown in FIG. 2 , the single-system air-cooled refrigerator provided by the second embodiment of the present invention further includes: at least one set of heat exchanging fins 82, and the heat exchanging fins 82 include: two independently disposed heat The heat exchange fins (82a, 82b) and the heat pipe 82c connecting the two heat exchange fins (82a, 82b), the heat pipe 82c is used to realize the heat conduction between the two heat exchange fins (82a, 82b); one of the heat exchange fins (82a, 82b) The sheet 82a is arranged in the air supply duct 60; the other heat exchange sheet 82b is arranged in the refrigerated compartment 10; during the cooling process of the refrigerated compartment 10, the The heat emitted by the heat exchange fin 82a is always lower than the heat emitted by the other heat exchange fin 82b; the heat of the higher heat exchange fin 82a is conducted to the lower heat exchange fin 82b through the heat pipe 82c; The air cooled by the evaporator 40 enters the air supply duct 60 , and enters the refrigerated compartment 10 after passing through the heat exchange fins 82 a in the air supply duct 60 .

Preferably, the heat exchange fins 82 a in the air supply duct 60 are arranged close to the air supply inlet 61 . The heat exchanging fins 82b disposed in the refrigerated compartment 10 are disposed away from the air outlet 62 . In a specific embodiment of the present invention, the heat exchange fins 82 b disposed in the refrigerated compartment 10 are disposed close to the lower part of the refrigerated compartment 10 . In this way, a better cooling effect of the refrigerated compartment is achieved.

It can be understood that, in practical applications, the closer to the air supply outlet 62 in the refrigerated compartment 10 , the lower the ambient temperature.

In a specific embodiment of the present invention, the heat pipe 82c is hollow and filled with refrigerant. The two heat exchanging fins (82a, 82b) are made of copper or aluminum to better ensure the heat exchange between the two fins (82a, 82b) with different temperatures.

It can be understood that the thickness, width and shape of the heat exchange fins (82a, 82b) can be specifically adjusted according to needs. When the width is larger and the thickness is thicker, the temperature of the cold air passing through it will change more. Do go into detail.

In order to facilitate the understanding of the present invention, the following describes a specific application scenario of a single-system air-cooled refrigerator according to the second embodiment of the present invention.

Assuming that the refrigerator is in normal operation, the temperature of the air passing through the evaporator 40 is -20°C, and the temperature in the refrigerating room is 8°C.

During the cooling process of the refrigerated compartment of a single-system refrigerator, the -20°C cold air passing through the evaporator 40 is introduced into the air supply duct 60 from the air supply inlet 61 through the fan 50 , and the heat exchange fin group 82 is not installed , the temperature of the cold air entering the refrigerated compartment 10 through the air supply outlet 62 will remain at the temperature at the time of entering the air supply duct 60, ie -20°C.

After adding the heat exchange sheet group 82 in this embodiment, since the heat exchange sheet 82b is arranged in the refrigerated compartment 10, its temperature is maintained at 8°C when no heat exchange is performed, which is higher than the temperature of the heat exchange sheet 82a. In this way, the heat pipe 82c plays the role of heat conduction, and conducts heat from the heat exchanging fin 82b with a higher temperature to the heat exchanging fin 82a with a lower heat, that is, the heat is transferred from the refrigerated compartment 10 to the air supply duct 60 . Correspondingly, after entering the air duct 60 from the air inlet 61, the cold air at -20°C passes through the heat exchange fin 82a, and its temperature will increase, for example, to -17°C. At the same time, the heat exchange fin 82b The temperature of the refrigerated compartment is reduced, but the cooling effect of the refrigerated compartment 10 will not be affected because the magnitude of the temperature reduction is relatively small. In this way, the large problem of temperature fluctuation of each compartment during the cooling process of the refrigerated compartment can be further avoided.

Of course, by changing the shape, thickness, width, and quantity of the heat exchange fins, the adjustment range of the temperature of the cold air passing through them can be specifically set according to needs, and will not be described in detail here.

Specifically, as shown in FIG. 3 , the single-system air-cooled refrigerator provided by the third embodiment of the present invention further includes: at least one set of heat exchanging fins 83, and the heat exchanging fins 83 include: two independently arranged heat exchangers The heat exchange fins (83a, 83b) and the heat pipe 83c connecting the two heat exchange fins (83a, 83b), the heat pipe 83c is used to realize the heat conduction between the two heat exchange fins (83a, 83b); one of the heat exchange fins (83a, 83b) The sheet 83a is arranged in the air supply duct 60; the other sheet of heat exchange sheet 83b is arranged close to the evaporator 40, and is arranged below the evaporator 40; The heat dissipated by the heat exchange fin 83a in the air supply duct 60 is always lower than the heat dissipated by the other heat exchange fin 83b; At the same time, the air cooled by the evaporator 40 enters the air supply duct 60 , and enters the refrigerated compartment 10 after passing through the heat exchange fins 83 a in the air supply duct 60 .

Preferably, the heat exchange fins 83 a in the air supply duct 60 are arranged close to the air supply inlet 61 . The heat exchange fins 83b disposed close to the evaporator are disposed close to the return air outlet 71 .

In this way, a better cooling effect of the refrigerated compartment is achieved.

It can be understood that in practical applications, due to the influence of the return air duct 70, the temperature of the cold air delivered from the return air outlet to the evaporator 40 is relatively high, so that the temperature of the cold air above the evaporator 40 is much lower than that below it. air-conditioning temperature.

In a specific embodiment of the present invention, the heat pipe 83c is hollow and filled with refrigerant. The two heat exchanging fins (83a, 83b) are made of copper or aluminum to better ensure the heat exchange between the two fins (83a, 83b) with different temperatures.

It can be understood that the thickness, width and shape of the heat exchange fins (83a, 83b) can be specifically adjusted according to needs. When the width is larger and the thickness is thicker, the temperature of the cold air passing through it will change more. Do go into detail.

In order to facilitate the understanding of the present invention, the following describes a specific application scenario of a single-system air-cooled refrigerator according to the third embodiment of the present invention.

Assuming that the refrigerator is in normal operation, the temperature of the air passing through the evaporator 40 is -20°C, and the temperature in the refrigerating room is 8°C.

During the cooling process of the refrigerated compartment of a single-system refrigerator, the cold air at -20°C passing through the evaporator 40 is introduced into the air supply duct 60 from the air supply inlet 61 through the fan 50, and the heat exchange fin group 83 is not installed , the temperature of the cold air entering the refrigerated compartment 10 through the air supply outlet 62 will remain at the temperature at the time of entering the air supply duct 60, ie -20°C.

After the heat exchange fin group 83 is added in this embodiment, since the heat exchange fin 83b is arranged below the evaporator 40 and close to the return air outlet 71, the temperature of the heat exchange fin 83b is maintained at Between -20°C and 8°C, higher than the temperature of the heat exchange fin 83a, so that the heat pipe 83c plays the role of heat conduction, and conducts heat from the heat exchange fin 83b with higher temperature to the heat exchange fin 83a with lower heat Place, that is, the heat below the evaporator with a higher temperature is transferred into the air supply duct 60 . Correspondingly, after entering the air duct 60 from the air inlet 61, the cold air at -20°C passes through the heat exchange fin 83a, and its temperature will increase, for example, to -17°C. At the same time, the heat exchange fin 83b The lowering of the temperature can increase the cooling effect of the evaporator 40 . In this way, during the cooling process of the refrigerated compartment 10 , the relatively large problem of temperature fluctuation of each compartment can be avoided.

Of course, by changing the shape, thickness, width, and quantity of the heat exchange fins, the adjustment range of the temperature of the cold air passing through them can be specifically set according to needs, and will not be described in detail here.

In the single-system air-cooled refrigerators of the second and third embodiments of the present invention, when the cooling capacity conducted by the evaporator remains unchanged, by adding heat exchange fins, the cold air in the air supply duct is heated during the circulation process. Exchange, to increase the temperature of the cold air delivered to the refrigerated room through the air supply duct, thereby ensuring the cold supply of the refrigerated room during the cooling process, while keeping the refrigerated room with a small temperature fluctuation difference, to achieve better Excellent cooling effect, which is beneficial to keep the food in the refrigerator fresh, prevent frostbite, and meet the different needs of users.

In the refrigerator according to one embodiment of the present invention, on the basis of the single-system air-cooled refrigerator shown in the second embodiment and the third embodiment above, a set of compensating heat exchange fins is added, and the compensating heat exchanging group includes: two fins independently arranged The compensation heat exchange fins and the compensation heat pipes connecting the two compensation heat exchange fins, the compensation heat pipes are used to realize the heat conduction between the two compensation heat exchange fins; In the air duct and return air duct; during the cooling process of the refrigerated compartment, the heat of the compensation heat exchange fins in the return air duct is conducted to the compensation heat exchange fins in the air supply duct through the heat pipes; at the same time, through the The air cooled by the evaporator enters the air supply duct, and enters the refrigerated compartment after passing through the heat exchanging fins and compensating heat exchanging fins therein, and the air passing through the refrigerated compartment enters the return air duct, and After passing through the compensation heat exchange fins in it, it is sent to the evaporator for cooling.

Specifically, as shown in FIG. 4 , the single-system air-cooled refrigerator provided by the fourth embodiment of the present invention further includes: at least one set of heat exchange fin groups 82 in the single-system air-cooled refrigerator described in the second embodiment And at least one set of compensating heat exchanging fins, the structure and arrangement of the compensating heat exchanging fins are the same as the heat exchanging fins 81 in the single-system air-cooled refrigerator provided in the first embodiment of the present invention, the fourth embodiment The working principle of two sets of heat exchange fins with different structures in the single-system air-cooled refrigerator is the same as the working principle of the heat exchange fins in the first embodiment and the second embodiment, so it will not be described in detail. What needs to be explained is , in this embodiment, the arrangement of the heat exchange fins 81a, 82a in the air supply duct 60 can be specifically set according to needs, and they can be arranged up and down, left and right, or staggered. , will not affect the implementation of the technical solution, and will not be described in detail here.

Specifically, as shown in FIG. 5 , the single-system air-cooled refrigerator provided by the fifth embodiment of the present invention further includes: at least one set of heat exchange fin groups 83 in the single-system air-cooled refrigerator described in the third embodiment And at least one set of compensating heat exchanging fins, the structure and arrangement of the compensating heat exchanging fins are the same as the heat exchanging fins 81 in the single-system air-cooled refrigerator provided in the first embodiment of the present invention, the fifth embodiment The working principle of the two sets of heat exchange fins with different structures in the single-system air-cooled refrigerator of the above-mentioned method is the same as that of the heat exchange fin groups in the first embodiment and the third embodiment above, so it will not be described in detail. What needs to be explained is , in this embodiment, the arrangement of the heat exchange fins 81a, 83a in the air supply duct 60 can be specifically set according to needs, and they can be arranged up and down, left and right or staggered. , will not affect the implementation of the technical solution, and will not be described in detail here.

For the single-system air-cooled refrigerators of the fourth and fifth embodiments of the present invention, under the condition that the amount of cooling conducted by the evaporator remains unchanged, by adding heat exchange fins, the cold air in the air supply duct and the cold air in the return air duct The cold air exchanges heat with the refrigerated compartment or the evaporator respectively to reduce the temperature difference between the air supply duct and the return air duct, thereby ensuring the cold supply of the refrigerated compartment and the freezer compartment during the cooling process and ensuring The better cooling effect of the refrigerated compartment is conducive to keeping the food in the refrigerated compartment fresh, preventing frostbite, and meeting the different needs of users.

As shown in Figure 6, Figure 7, Figure 8, and Figure 9, the single-system air-cooled refrigerators shown also include: at least one set of heat exchange fins, and the heat exchange fins include: two independently arranged A heat exchange fin and a heat pipe connecting the two heat exchange fins, the heat pipe is used to realize heat conduction between the two heat exchange fins; one of the heat exchange fins is arranged in the return air duct; the other heat exchange fin Installed in the refrigerated room or near the evaporator; during the cooling process of the refrigerated room, the heat dissipated by the heat exchange fin in the return air duct is always higher than the heat dissipated by the other heat exchange fin; The heat from the heat exchanging fins with higher heat is conducted to the heat exchanging fins with lower heat through the heat pipe; at the same time, the cold air entering the return air duct through the refrigerated compartment passes through the hot air in the return air duct. After the sheet is exchanged, it is output to the evaporator for cooling.

Specifically, as shown in FIG. 6 , the single-system air-cooled refrigerator provided by the sixth embodiment of the present invention further includes: at least one set of heat exchanging fins 84, and the heat exchanging fins 84 include: two independently arranged The heat exchange fins (84a, 84b) and the heat pipe 84c connecting the two heat exchange fins (84a, 84b), the heat pipe 84c is used to realize the heat conduction between the two heat exchange fins (84a, 84b); one of the heat exchange fins (84a, 84b) The exchange fin 84a is disposed in the return air duct 70; the other heat exchange fin 84b is disposed in the refrigerated compartment 10; during the cooling process of the refrigerated compartment 10, it is located in the return air duct 70 The heat exchanging fin 84b of one heat exchanging fin 84b dissipates the heat higher than the heat exchanging fin 84a of another heat exchanging fin all the time; The cold air entering the return air duct 70 from the refrigerated compartment 10 is output to the evaporator 40 for cooling after passing through the heat exchange fins 84b in the return air duct 70 .

Preferably, the heat exchange fins 84b in the return air duct 70 are arranged close to the return air inlet 72 . The heat exchanging fins 84 a disposed in the refrigerated compartment 10 are disposed close to the air outlet 62 . In this way, a better cooling effect of the refrigerated compartment is achieved.

It can be understood that, in practical applications, the closer to the air supply outlet 62 in the refrigerated compartment 10 , the lower the ambient temperature.

In a specific embodiment of the present invention, the heat pipe 84c is hollow and filled with refrigerant. The two heat exchanging fins (84a, 84b) are made of copper or aluminum to better ensure the heat exchange between the two fins (84a, 84b) with different temperatures.

It can be understood that the thickness, width and shape of the heat exchange fins (84a, 84b) can be specifically adjusted according to needs. When the width is larger and the thickness is thicker, the temperature of the cold air passing through it will change more. Do go into detail.

In order to facilitate the understanding of the present invention, the following describes a specific application scenario of a single-system air-cooled refrigerator according to the sixth embodiment of the present invention.

Assuming that the refrigerator is in normal operation, the temperature of the air passing through the evaporator 40 is -20°C, and the temperature in the refrigerating room is 8°C.

During the cooling process of the refrigerated compartment of a single-system refrigerator, the -20°C cold air passing through the evaporator 40 is introduced into the air supply duct 60 from the air supply inlet 61 through the fan 50 , and the heat exchange fin group 84 is not installed , the temperature of the cold air entering the refrigerated compartment 10 through the air supply outlet 62 will remain at the temperature at the time of entering the air supply duct 60, ie -20°C.

After adding the heat exchanging fin group 84 in this embodiment, since the heat exchanging fins 84b are arranged in the return air duct 70, the temperature is kept at 8°C without heat exchange, and the heat exchanging fins 84a are arranged in the refrigerated room In the room 10, and close to the air outlet 62 of the air duct 60, the temperature will be between -20°C and 8°C, that is, the temperature of the heat exchange fins 84a is lower than the temperature of the heat exchange fins 84b In this way, the heat pipe 84c plays a role of heat conduction, and conducts heat from the heat exchanging fin 84b with a higher temperature to the heat exchanging fin 84a with a lower heat, that is, the heat is transferred from the return air duct 70 to the refrigerated compartment 10 . Correspondingly, after entering the return air duct 70 from the return air inlet 72, the temperature of the 8°C cold air will decrease after passing through the heat exchange fins 84b. It can be understood that the lower the temperature of the cold air flowing through the return air outlet 71 is. , the better the cooling effect of the freezer compartment, so that during the cooling process of the freezer compartment, the excessive influence on the ambient temperature of the freezer compartment is avoided.

Of course, by changing the shape, thickness, width, and quantity of the heat exchange fins, the adjustment range of the temperature of the cold air passing through them can be specifically set according to needs, and will not be described in detail here.

Specifically, as shown in FIG. 7 , the single-system air-cooled refrigerator provided by the seventh embodiment of the present invention further includes: at least one set of heat exchange fins 85, and the heat exchange fins 85 include: two independently arranged The heat exchange fins (85a, 85b) and the heat pipe 85c connecting the two heat exchange fins (85a, 85b), the heat pipe 85c is used to realize the heat conduction between the two heat exchange fins (85a, 85b); one of the heat exchange fins (85a, 85b) The exchange fin 85a is set in the return air duct 70; the other heat exchange fin 85b is set close to the evaporator 40 and above the evaporator 40; The heat dissipated by the heat exchange fin 85b in the return air duct 70 is always higher than the heat dissipated by the other heat exchange fin 85a; heat exchange fins 85a; at the same time, the cold air entering the return air duct 70 through the refrigerated compartment 10 is output to the evaporator 40 for cooling after passing through the heat exchange fins 85b in the return air duct 70 .

Preferably, the heat exchange fins 84b in the return air duct 70 are arranged close to the return air inlet 72 . The heat exchanging fins 84a arranged close to the evaporator 40 are arranged close to the air inlet 61, so as to achieve a better cooling effect in the refrigerated compartment.

It can be understood that, in practical applications, the ambient temperature above the evaporator is lower than the ambient temperature below the evaporator.

In a specific embodiment of the present invention, the heat pipe 85c is hollow and filled with refrigerant. The two heat exchanging fins (85a, 85b) are made of copper or aluminum to better ensure the heat exchange between the two fins (85a, 85b) with different temperatures.

It can be understood that the thickness, width and shape of the heat exchange fins (85a, 85b) can be specifically adjusted according to needs. When the width is larger and the thickness is thicker, the temperature of the cold air passing through it will change more. Do go into detail.

In order to facilitate the understanding of the present invention, the following describes a specific application scenario of a single-system air-cooled refrigerator according to the seventh embodiment of the present invention.

Assuming that the refrigerator is in normal operation, the temperature of the air passing through the evaporator 40 is -20°C, and the temperature in the refrigerating room is 8°C.

During the cooling process of the refrigerated compartment of a single-system refrigerator, the cold air at -20°C passing through the evaporator 40 is introduced into the air supply duct 60 from the air supply inlet 61 through the fan 50. In the case where the heat exchange fin group 85 is not installed , the temperature of the cold air entering the refrigerated compartment 10 through the air supply outlet 62 will remain at the temperature at the time of entering the air supply duct 60, ie -20°C.

After the heat exchange fin group 85 is added in this embodiment, since the heat exchange fin 85b is arranged in the return air duct 70, the temperature is maintained at 8°C without heat exchange, and the heat exchange fin 85a is arranged in the evaporator 40, and close to the air inlet 61, its temperature will be close to -20 °C, that is, the temperature of the heat exchange fin 85a is lower than the temperature of the heat exchange fin 85b, so that the heat pipe 85c plays the role of heat conduction, The heat is transferred from the heat exchange fins 85b with higher temperature to the heat exchange fins 85a with lower heat, that is, the heat is transferred from the return air duct 70 to the top of the evaporator 40. Since the evaporator is always in the cooling state, it will not It will affect the cooling state of the evaporator. At the same time, the cold air entering the air supply duct 60 will be higher than -20°C. In this way, it will not cause the room temperature of the refrigerated room to be too low, and keep the refrigerated room and the frozen room. Good cooling effect.

Of course, by changing the shape, thickness, width, and quantity of the heat exchange fins, the adjustment range of the temperature of the cold air passing through them can be specifically set according to needs, and will not be described in detail here.

The single-system air-cooled refrigerators of the sixth and seventh embodiments of the present invention, under the condition that the cooling capacity conducted by the evaporator remains unchanged, by adding heat exchange fins, the cold air in the return air duct is heated during the circulation process. Exchange, in order to reduce the temperature of the cold air transported to the evaporator through the return air duct for cooling, thereby ensuring the cold supply of the refrigerated room during the cooling process, while keeping the refrigerated room with a small temperature fluctuation difference, to achieve a higher temperature. Good cooling effect, to meet the different needs of users.

In the refrigerator according to one embodiment of the present invention, on the basis of the single-system air-cooled refrigerators shown in the sixth embodiment and the seventh embodiment above, a set of compensation heat exchange sheet groups is added, and the compensation heat exchange group includes: two sheets independently arranged The compensation heat exchange fins and the compensation heat pipes connecting the two compensation heat exchange fins, the compensation heat pipes are used to realize the heat conduction between the two compensation heat exchange fins; In the air duct and return air duct; during the cooling process of the refrigerated compartment, the heat of the compensation heat exchange fins in the return air duct is conducted to the compensation heat exchange fins in the air supply duct through the heat pipes; at the same time, through the The air cooled by the evaporator enters the air supply duct and enters the refrigerated compartment after passing through the compensation heat exchange fins in it, and the air passing through the refrigerated compartment enters the return air duct and passes through the The heat exchange fins and compensation heat exchange fins are sent to the evaporator for cooling.

Specifically, as shown in FIG. 8 , the single-system air-cooled refrigerator provided by the eighth embodiment of the present invention further includes: at least one set of heat exchange fin groups 84 in the single-system air-cooled refrigerator described in the sixth embodiment And at least one set of compensating heat exchanging fins, the structure and arrangement of the compensating heat exchanging fins are the same as the heat exchanging fins 81 in the single-system air-cooled refrigerator provided in the first embodiment of the present invention, the eighth embodiment The working principle of two sets of heat exchange fins with different structures in the single-system air-cooled refrigerator is the same as that of the heat exchange fin groups in the first embodiment and the sixth embodiment above, so it will not be described in detail. What needs to be explained is , in this embodiment, the arrangement of the heat exchange fins 81b and 84b in the return air duct 70 can be specifically set according to needs, and they can be arranged up and down, left and right or staggered. , will not affect the implementation of the technical solution, and will not be described in detail here.

Specifically, as shown in FIG. 9 , the single-system air-cooled refrigerator provided by the ninth embodiment of the present invention further includes: at least one set of heat exchange fin groups 85 in the single-system air-cooled refrigerator described in the seventh embodiment And at least one set of compensating heat exchanging fins, the structure and arrangement of the compensating heat exchanging fins are the same as the heat exchanging fins 81 in the single-system air-cooled refrigerator provided in the first embodiment of the present invention, the ninth embodiment The working principle of the two sets of heat exchange fins with different structures in the single-system air-cooled refrigerator is the same as that of the heat exchange fins in the first embodiment and the seventh embodiment above, so it will not be described in detail. What needs to be explained is , in this embodiment, the arrangement of the heat exchange fins 81b, 85b in the return air duct 70 can be specifically set according to needs, and they can be arranged up and down, left and right or staggered. , will not affect the implementation of the technical solution, and will not be described in detail here.

The single-system air-cooled refrigerators of the eighth and ninth embodiments of the present invention, under the condition that the cooling capacity conducted by the evaporator remains unchanged, by adding heat exchange fins, the cold air in the air supply duct and the cold air in the return air duct The cold air exchanges heat with the refrigerated compartment or the evaporator respectively to reduce the temperature difference between the air supply duct and the return air duct, thereby ensuring the cold supply of the refrigerated compartment and the freezer compartment during the cooling process and ensuring The better cooling effect of the refrigerated compartment is conducive to keeping the food in the refrigerated compartment fresh, preventing frostbite, and meeting the different needs of users.

As shown in Figure 10, Figure 11, Figure 12, and Figure 13, the single-system air-cooled refrigerators shown also include: at least one set of air supply heat exchange fins, and at least one set of return air heat exchange fins; The air-supply heat exchange fin group includes: two independently arranged air-supply heat-exchange fins and an air-supply heat pipe connecting the two air-supply heat-exchange fins. The heat conduction between them; one of the air supply heat exchange fins is arranged in the air supply duct; the other air supply heat exchange fin is arranged in the refrigerator room or near the evaporator; the return air heat exchange The sheet group includes: two independently arranged return air heat exchange fins and a return air heat pipe connecting the two return air heat exchange fins, the return air heat pipe is used to realize heat conduction between the two return air heat exchange fins; One return air heat exchange fin is arranged in the return air duct; the other return air heat exchange fin is arranged in the refrigerated room or close to the evaporator; during the cooling process of the refrigerated room, in the The heat dissipated by the air-supply heat exchange fin in the air-supply duct is always lower than the heat dissipated by the other air-supply heat exchange fin; Air supply heat exchange fins; the heat emitted by the return air heat exchange fins in the return air duct is always higher than the heat emitted by the other return air heat exchange fins; the heat of the return air heat exchange fins with higher heat is passed through The return air heat pipe conducts to the return air heat exchange fins with lower heat; at the same time, the air cooled by the evaporator enters the air supply duct, passes through the air supply heat exchange fins in it, and then enters the In the refrigerated compartment, the air passing through the refrigerated compartment enters the return air duct, passes through the return air heat exchange fins inside, and then is transported to the evaporator for cooling.

Specifically, as shown in FIG. 10 , the single-system air-cooled refrigerator provided by the tenth embodiment of the present invention further includes: at least one set of air supply heat exchange fins, and at least one set of return air heat exchange fins; The structure and arrangement of the air supply heat exchange fins are the same as the heat exchange fins 82 in the single-system air-cooled refrigerator provided in the second embodiment of the present invention; the structure and arrangement of the return air heat exchange fins are the same as those of the present invention The heat exchange plate group 84 in the single-system air-cooled refrigerator provided by the sixth embodiment is the same; thus, the working principle of the two sets of heat exchange fins in the single-system air-cooled refrigerator of the tenth embodiment is the same as that of the above-mentioned second embodiment The manner and the working principle of the heat exchange fin group in the sixth embodiment are the same, so details are not repeated here.

Specifically, as shown in FIG. 11 , the single-system air-cooled refrigerator provided by the eleventh embodiment of the present invention further includes: at least one set of air supply heat exchange fins, and at least one set of return air heat exchange fins; The structure and arrangement of the air supply heat exchange fin group are the same as the heat exchange fin group 82 in the single-system air-cooled refrigerator provided in the second embodiment of the present invention; the structure and arrangement of the return air heat exchange fin group are the same as those in this The heat exchange plate group 85 in the single-system air-cooled refrigerator provided by the seventh embodiment of the invention is the same; thus, the working principle of the two sets of heat exchange fins with different structures in the single-system air-cooled refrigerator in the eleventh embodiment is the same as that of the above-mentioned first The working principle of the heat exchange fin group in the second embodiment and the seventh embodiment is the same, so it will not be repeated in detail.

Specifically, as shown in FIG. 12 , the single-system air-cooled refrigerator provided by the twelfth embodiment of the present invention further includes: at least one set of air supply heat exchange fins, and at least one set of return air heat exchange fins; The structure and arrangement of the air supply heat exchange fin group are the same as the heat exchange fin group 83 in the single-system air-cooled refrigerator provided in the third embodiment of the present invention; the structure and arrangement of the return air heat exchange fin group are the same as those in this The heat exchange plate group 84 in the single-system air-cooled refrigerator provided by the sixth embodiment of the invention is the same; thus, the working principle of the two sets of heat exchange fins in the single-system air-cooled refrigerator of the twelfth embodiment is the same as that of the above-mentioned first The working principles of the heat exchanging fin groups in the third embodiment and the sixth embodiment are the same, so details will not be repeated here.

Specifically, as shown in FIG. 13 , the single-system air-cooled refrigerator provided by the thirteenth embodiment of the present invention further includes: at least one set of air supply heat exchange fins, and at least one set of return air heat exchange fins; The structure and arrangement of the air supply heat exchange fin group are the same as the heat exchange fin group 83 in the single-system air-cooled refrigerator provided in the third embodiment of the present invention; the structure and arrangement of the return air heat exchange fin group are the same as those in this The heat exchange plate group 85 in the single-system air-cooled refrigerator provided by the seventh embodiment of the invention is the same; thus, the working principle of the two sets of heat exchange fins with different structures in the single-system air-cooled refrigerator in the eleventh embodiment is the same as that of the above-mentioned first The working principles of the heat exchange fin groups in the third embodiment and the seventh embodiment are the same, so details are not repeated here.

The single-system air-cooled refrigerators shown in the tenth, eleventh, twelfth, and thirteenth embodiments of the present invention, under the condition that the cooling capacity conducted by the evaporator remains unchanged, by adding the air supply heat exchange plate group and the return air heat Exchange the sheet group, so that the cold air in the air supply duct and the cold air in the return air duct can exchange heat with the cold air near the refrigerated room or the evaporator, so as to reduce the temperature difference between the air supply duct and the return air duct. While ensuring the cold supply of the refrigerated compartment and the refrigerated compartment during the refrigeration process, it also ensures a better cooling effect of the refrigerated compartment, which is conducive to keeping food fresh in the refrigerated compartment, preventing frostbite, and meeting the different needs of users.

Referring to Figure 14, Figure 15, Figure 16, Figure 17 and Figure 18, the single-system air-cooled refrigerator shown in the present invention, the air duct includes: air supply air duct, including refrigerating air supply air duct 91 and soft freezing The air supply duct 92, the refrigerated air supply duct 91 is configured to supply the air cooled by the evaporator 40 to the refrigerated compartment 10; The air cooled by the evaporator 40 is supplied to the soft freezer 20; the return air duct 93 is configured to transport the air from the refrigerated compartment 10 and/or the freezer compartment 20 to the evaporator 40 for cooling.

Preferably, the refrigerated air duct 91 includes: a refrigerated air inlet 911 disposed toward the side of the evaporator 40 , and a refrigerated air outlet 912 disposed toward the direction of the refrigerated compartment 10 ; The freezing air duct 92 includes: a soft freezing air inlet 921 disposed toward the evaporator 40 , and a soft freezing air outlet 922 disposed toward the refrigerated compartment 10 .

The return air duct 93 includes: a refrigerated return air duct 931 used for the independent circulation of cold air delivered from the refrigerated compartment 10 to the evaporator 40, and a soft freezer used for the independent circulation of cold air delivered to the evaporator 40 by the soft freezer compartment 20. Return air duct 932, and its common common return air duct 933; the refrigerated return air duct 931 has a refrigerated return air inlet 9311 arranged toward the side of the refrigerated compartment 10, and the soft freezing return air The duct 932 has a soft freezing return air inlet 9321 disposed toward the soft freezing chamber 20 side, and the shared return air duct 933 has a return air outlet 9331 disposed toward the evaporator 40 side; correspondingly, the The installation positions of the refrigerating air supply inlet 911, the soft freezing air supply inlet 921, and the return air outlet 9331 relative to the evaporator 40. The setting positions of the soft freezing air supply outlet 922 and the soft freezing return air inlet 9321 relative to the soft freezing chamber 20 can be adjusted according to requirements.

In the specific embodiment of the present invention, the refrigerated air supply inlet 911 and the soft freezing air supply inlet 921 are all arranged above the evaporator 40; the return air outlet 9331 is arranged below the evaporator 40; The refrigerated air supply outlet 912 is set close to the top of the refrigerated compartment 10; the refrigerated air return air inlet 9311 is set close to the bottom of the refrigerated compartment 10; the soft freezer air supply outlet 922 is set close to the top of the soft freezer compartment 20; The freezing return air inlet 9321 is arranged near the bottom of the soft freezing compartment 20 .

Further, the refrigerator also includes: channel switches corresponding to the refrigerating air supply duct 91, the soft freezing air supply duct 92, the refrigerating return air duct 931, the soft freezing return air duct 932, and the shared return air duct 933 80, the channel switch 80 can selectively open or close the refrigerating air supply duct 91, the soft freezing air supply duct 92, the refrigerating return air duct 931, the soft freezing return air duct 932, and the shared return air duct 933 at least one opening, the openings include: refrigerating air supply inlet 911, soft freezing air supply inlet 921, return air outlet 9331, refrigerating air supply outlet 912, refrigerating return air inlet 9311, the soft freezing Air supply outlet 922, soft freezing return air inlet 9321. The channel switch includes: a refrigerating air supply switch, a soft freezing air supply switch and/or a return air switch (not shown separately); the refrigerating air supply switch is used to selectively block the air cooled by the evaporator 40 from entering the refrigerator. compartment 10; the soft freezing air supply switch is used to selectively block the air cooled by the evaporator 40 from entering the soft freezing compartment 20; the return air switch is used to selectively block the refrigerating compartment 10 and/or soft freezing Air within chamber 20 is delivered to evaporator 40 .

In a specific embodiment of the present invention, an accommodating space is formed between the casing (not shown) and the inner container (not shown) of the box; , return air duct 93 are all arranged in the housing space formed by the housing and the inner tank rear wall; to achieve better cooling effect, and keep the cold storage air supply duct 91, soft freezing air supply duct 92. The temperature of the cold air circulating in the return air duct 93 .

As shown in FIG. 14 , the single-system air-cooled refrigerator provided by the fourteenth embodiment of the present invention further includes: at least one set of heat exchanging fins 86, and the heat exchanging group 86 includes: two independently arranged heat exchanging fins (86a, 86b) and a heat pipe 86c connecting two heat exchange fins (86a, 86b), the heat pipe 86c is used to realize heat conduction between the two heat exchange fins (86a, 86b); two heat exchange fins ( 86a, 86b) are respectively arranged in the soft freezing air supply duct 92 and the return air duct 93; during the cooling process of the soft freezing chamber 20, the heat of the heat exchange fins 86b in the return air duct 93 passes through the heat pipe 86c is conducted to the heat exchange fins 86a in the freezing air duct; at the same time, the cold air delivered to the soft freezing chamber 20 through the soft freezing air duct 92 passes through the heat exchanging fins 86a in the soft freezing air duct 92 After entering the soft freezing compartment 20, the air passing through the soft freezing compartment 20 enters the return air duct 93, passes through the heat exchange fins 86b therein, and then is transported to the evaporator 40 for cooling.

Preferably, the heat exchange fins 86a in the soft freezing air supply duct 92 are arranged close to the soft freezing air supply air inlet 921; the heat exchange fins 86b in the return air duct 93 are arranged in the common In the return air duct 933, it is set close to the soft freezing return air duct 932, so as to achieve a better cooling effect in the refrigerated compartment.

In a specific embodiment of the present invention, the heat pipe 86c is hollow and filled with refrigerant. The two heat exchanging fins (86a, 86b) are made of copper or aluminum to better ensure the heat exchange between the two fins (86a, 86b) with different temperatures.

It can be understood that the thickness, width and shape of the heat exchange fins (86a, 86b) can be specifically adjusted according to needs. When the width is larger and the thickness is thicker, the temperature of the cold air passing through it will change more. Do go into detail.

In order to facilitate the understanding of the present invention, the following describes a specific application scenario of a single-system air-cooled refrigerator according to the fourteenth embodiment of the present invention.

Assuming that the refrigerator is in normal operation, the temperature of the air passing through the evaporator 40 is -20°C, and the temperature in the soft freezer compartment 20 is -7°C.

During the cooling process of the soft freezer compartment of a single-system refrigerator, the -20°C cold air passing through the evaporator 40 is introduced into the soft freeze air supply duct 92 from the soft freeze air supply air inlet 921 through the fan 50. In the case of 86, the temperature of the cold air entering the soft freezer compartment 20 through the soft freezer air outlet 922 will maintain the temperature at the time of entering the soft freezer air supply duct 92, i.e. -20°C, and will be transported to the air outlet 9331 through the return air outlet. The cold air temperature of the evaporator 40 will maintain the temperature of the soft freezer 20, i.e. -7°C.

After the heat exchange fin group 86 is added in this embodiment, the temperature of the heat exchange fin 86b is higher than the temperature of the heat exchange fin 86a. In this way, the heat pipe 86c plays the role of heat conduction, and conducts heat from the higher temperature heat exchange fin 86b to the heat exchange fin 86b. At the heat exchange fin 86a where the heat is relatively low, the heat is transferred from the return air duct 93 to the soft freezing air supply duct 92 . Correspondingly, after the -20°C cold air enters the soft-freezing air supply duct 92 from the soft-freezing air supply inlet 921, its temperature will rise after passing through the heat exchange fins 86a, and enters the return air from the soft-freezing return air inlet 9321. After the -7°C cold air behind the air duct 93 passes through the heat exchange fins 86b, its temperature will decrease. In this way, without changing the operation of the evaporator 40 and the fan 50, the temperature of the cold air delivered to the soft freezing chamber 20 through the soft freezing air outlet 922 is increased, and the temperature of the cold air delivered to the evaporator 40 through the return air outlet 9331 is increased. The temperature of the cold air is lowered, which reduces the occurrence of large temperature fluctuations in each compartment during the cooling process of the soft freezer.

Of course, by changing the shape, thickness, width, and quantity of the heat exchange fins, the adjustment range of the temperature of the cold air passing through them can be specifically set according to needs, and will not be described in detail here.

As shown in Figure 15, the difference between the single-system air-cooled refrigerator provided by the fifteenth embodiment of the present invention and the single-system air-cooled refrigerator provided by the fourteenth embodiment is that in the fourteenth embodiment The installation position of the heat exchanging fins 86b in the air duct 933; in this embodiment, the heat exchanging fins 86b are arranged in the soft freezing return air duct 932, and the operation of the single-system air-cooled refrigerator provided in the fifteenth embodiment The principle is the same as that of the fourteenth embodiment, and will not be described in detail here.

For the single-system air-cooled refrigerators of the fourteenth and fifteenth embodiments of the present invention, under the condition that the cooling capacity conducted by the evaporator remains unchanged, by adding heat exchange fins, the cold air in the soft freezing air supply duct and the return air The cold air in the air duct performs heat exchange to reduce the temperature difference between the soft freezing air supply duct and the return air duct, thereby ensuring the cold supply of the soft freezing compartment during the cooling process and ensuring that the soft freezing compartment and freezing compartment are more efficient. The good cooling effect is beneficial to the preservation of food in the soft freezer and meets the different needs of users.

As shown in Figure 16, the single-system air-cooled refrigerator provided in the sixteenth embodiment of the present invention; the single-system air-cooled refrigerator in the sixteenth embodiment is based on the single-system air-cooled refrigerator provided in the fourteenth embodiment Improvement, correspondingly, compared with the single-system air-cooled refrigerator of the fourteenth embodiment, it further includes: a third heat exchange fin 86d, and a heat exchange fin 86b connected to the common return air duct 933 and The second heat pipe 86e of the third heat exchange fin 86d; the third heat exchange fin 86d is arranged in the refrigerated air supply air duct 91, and the second heat pipe 86e is used to realize being in the common return air duct 933 Heat conduction between the heat exchange fins 86b and the third heat exchange fins 86d.

In this embodiment, the second heat pipe 86e is hollow and filled with refrigerant. The material of the third heat exchanging fin 86d is the same as that of the heat exchanging fin 86b, so as to better ensure heat exchange between fins with different temperatures, which will not be described in detail here. It can be understood that the thickness, width and shape of the heat exchanging fins 86d can also be specifically adjusted according to needs. When the width is larger and the thickness is thicker, the temperature of the cold air passing through it will change more, which will not be described in detail here.

In the single-system air-cooled refrigerator of the sixteenth embodiment of the present invention, when the refrigerated compartment is independently refrigerated, heat exchange is performed between the heat exchange fins 86b and 86d through the second heat pipe 86e, thereby neutralizing the refrigerated air supply. The temperature of the cold air in the air duct 91 and the return air duct 93, so that the refrigerating compartment 10 has a better cooling effect, and simultaneously suppresses the temperature fluctuation of the freezing compartment 30; Heat exchange between the heat exchange fins 86b through the heat pipe 86c, and then neutralize the temperature of the cold air in the soft freezing air supply duct 92 and the return air duct 93, so that the soft freezing compartment 20 has a better cooling effect, and at the same time inhibits freezing. The temperature of the compartment 30 fluctuates; when the refrigerated compartment 10 and the soft freezer 20 are cooled at the same time, the heat exchange fins 86a and 86d exchange heat with the heat exchange fins 86b at the same time, and respectively neutralize the refrigerated air supply duct 91 and The temperature of the cold air in the return air duct 93 and the temperature of the cold air in the neutralized soft freezing air supply air duct 92 and the return air duct 93 , thereby maintaining a better cooling effect in each compartment.

As shown in Figures 17 and 18, the single-system air-cooled refrigerators provided by the seventeenth and eighteenth embodiments of the present invention; Improvements are made on the basis of the single-system air-cooled refrigerator provided by the fifth embodiment. Correspondingly, the seventeenth embodiment is compared with the single-system air-cooled refrigerator of the fourteenth embodiment, and the eighteenth embodiment is compared with the fifteenth embodiment. Each of the single-system air-cooled refrigerators further includes: at least one set of refrigerating heat exchange fins, and the refrigerating heat exchanging group includes: two independently arranged refrigerating heat exchanging fins (86f, 86g) and connecting two refrigerating heat exchanging fins ( 86f, 86g), the refrigerating heat pipe 86h is used to realize heat conduction between two refrigerating heat exchange fins (86f, 86g); the two refrigerating heat exchanging fins (86f, 86g) are respectively arranged on In the air duct 91 and the return air duct 93.

In the specific embodiment of the present invention, the refrigeration heat exchange fins 86g in the return air duct 93 are arranged in the refrigeration return air duct 931, of course, the refrigeration heat exchange fins in the return air duct 93 86g is arranged in the common return air duct 933 (this embodiment is not shown in the figure).

In this embodiment, the refrigerating heat pipe 86h is hollow and filled with refrigerant. The material of the refrigerating heat exchanging fins (86f, 86g) can also be copper or aluminum, so as to better ensure the heat exchange between the two refrigerating heat exchanging fins (86f, 86g) with different temperatures. It can be understood that the thickness, width and shape of the refrigerated heat exchange fins (86f, 86g) can also be specifically adjusted according to needs. When the width is larger and the thickness is thicker, the temperature of the cold air passing through it will change more. Do not go into details.

In the single-system air-cooled refrigerator of the sixteenth embodiment of the present invention, when the refrigerated compartment is independently refrigerated, the refrigerated heat exchange sheet 86f and the refrigerated heat exchange sheet 86g perform heat exchange through the refrigerated heat pipe 86h, and then neutralize the refrigerated delivery. The temperature of the cold air in the air duct 91 and the return air duct 93, so that the refrigerated compartment 10 has a better cooling effect, and simultaneously suppresses the temperature fluctuation of the refrigerated compartment 30; Heat exchange with the heat exchange fin 86b through the heat pipe 86c, and then neutralize the temperature of the cold air in the soft freezing air supply duct 92 and the return air duct 93, so that the soft freezing compartment 20 has a better cooling effect, and at the same time suppresses The temperature of the freezer compartment 30 fluctuates; when the freezer compartment 10 and the soft freezer compartment 20 are cooling at the same time, the above two sets of heat exchange fins perform heat exchange at the same time to neutralize the air in the refrigerated air supply duct 91 and the return air duct 93 respectively. The cold air temperature and the cold air temperature in the soft freezing air supply air duct 92 and the return air duct 93 are neutralized, so as to keep each compartment with a better cooling effect.

It should be noted that, in this embodiment, when the heat exchanging fins 86b and the refrigerating heat exchanging fins 86g are in the common return air duct 933 at the same time, the arrangement of the heat exchanging fins 86b and the refrigerating heat exchanging fins 86g can be specified as required. The arrangement can be arranged up and down, left and right or staggered, and the way of arrangement will not affect the implementation of the technical solution, so it will not be described in detail here.

The cost of the single-system air-cooled refrigerators in the sixteenth, seventeenth, and eighteenth embodiments of the present invention is relatively low. When the cooling capacity conducted by the evaporator remains unchanged, by adding heat exchange fins, the air in the air supply duct The cold air exchanges heat with the cold air in the return air duct to reduce the temperature difference between the air supply duct and the return air duct, thereby ensuring the cold supply of the refrigerated compartment and the soft freezer during the refrigeration process and ensuring the cold storage. The compartment, the soft freezer, and the freezer have a better cooling effect, which is beneficial to the preservation of food in the freezer and soft freezer, and meets the different needs of users.

In other embodiments of the present invention, referring to the arrangement of each group of heat exchange fins in the first embodiment to the thirteenth embodiment of the present invention, it can be applied to the air duct of the soft freezer after conversion, and it is not mentioned here Let me go into more detail.

It should be understood that although this description is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the description is only for clarity, and those skilled in the art should take the description as a whole, and each The technical solutions in the embodiments can also be properly combined to form other embodiments that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions for feasible implementations of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent implementation or implementation that does not depart from the technical spirit of the present invention All changes should be included within the protection scope of the present invention.

Claims (10)

1. A kind of 1. single system wind cooling refrigerator, it is characterised in that including：

   Casing, it, which is limited, forms an at least refrigerator room；

   Evaporator, for being cooled down to the air for flowing through it；

   Supply air duct, it is configured to supply the air cooled down via the evaporator to the refrigerator room；

   Return airway, it is configured to the air from refrigerator room being delivered to cooling at the evaporator；

   At least one set of heat exchanging fin group, the heat exchanging fin group include：The heat exchanging fin and connection two panels that two panels is independently arranged The heat pipe of heat exchanging fin, the heat conduction that the heat pipe is used to realize between two panels heat exchanging fin；

   Wherein a piece of heat exchanging fin is arranged in the supply air duct；

   Wherein another heat exchanging fin is arranged in the refrigerator room or set close to the evaporator；

   In the refrigerator room process of refrigerastion, the heat that the heat exchanging fin in the supply air duct distributes is consistently lower than another The heat that heat exchanging fin distributes；The heat of the higher heat exchanging fin of heat passes through the hot pipe conducting to the relatively low heat exchange of heat Piece；Meanwhile the air cooled down via the evaporator enters the supply air duct, and by the heat exchange in supply air duct Enter the refrigerator room after piece.
2. 2. single system wind cooling refrigerator according to claim 1, it is characterised in that wherein another heat exchanging fin is arranged at institute State in refrigerator room；

   The supply air duct includes：The air-supply air inlet set towards the vaporizer side, and towards the refrigerator room side To the air-supply air outlet of setting；

   The heat exchanging fin being arranged in refrigerator room is set away from the air-supply air outlet.
3. 3. single system wind cooling refrigerator according to claim 1, it is characterised in that wherein another heat exchanging fin is close to described Evaporator is set, and is arranged at below the evaporator.
4. 4. single system wind cooling refrigerator according to claim 1, it is characterised in that wherein another heat exchanging fin is close to described Evaporator is set；

   The return airway includes：The return air air outlet set towards the vaporizer side, and towards the refrigerator room side To the return air air inlet of setting；

   The heat exchanging fin set close to evaporator is set close to the return air air outlet.
5. 5. the single system wind cooling refrigerator according to any one of Claims 1-4, it is characterised in that the air-cooled ice of single system Case also includes：At least one set compensation heat exchanging fin group；

   The compensation heat exchange group includes：The compensation heat exchanging fin and connect two panels compensation heat exchanging fin that two panels is independently arranged Heat pipe is compensated, the compensation heat pipe is used to realize the heat conduction between two panels compensation heat exchanging fin；

   Wherein, two panels compensation heat exchanging fin is respectively arranged in supply air duct and return airway；

   In the refrigerator room process of refrigerastion, the heat of the compensation heat exchanging fin in return airway passes through the hot pipe conducting To the compensation heat exchanging fin for being in supply air duct；Meanwhile enter the supply air duct, simultaneously via the air of evaporator cooling Enter the refrigerator room after heat exchanging fin of the inside and compensation heat exchanging fin, enter via the air of refrigerator room The return airway is simultaneously delivered to cooling at the evaporator after compensation heat exchanging fin of the inside.
6. 6. single system wind cooling refrigerator according to claim 1, it is characterised in that the supply air duct includes：Described in The air-supply air inlet that vaporizer side is set, and the air-supply air outlet set towards the refrigerator room direction；

   The air-supply air outlet is set close to the top of refrigerator room.
7. 7. single system wind cooling refrigerator according to claim 1, it is characterised in that the return airway includes：Described in The return air air outlet that vaporizer side is set, and the return air air inlet set towards the refrigerator room direction；

   The return air air inlet is set close to the bottom of refrigerator room.
8. 8. single system wind cooling refrigerator according to claim 1, it is characterised in that the hollow setting of heat pipe, filling in it Refrigerant.
9. 9. single system wind cooling refrigerator according to claim 1, it is characterised in that the material of heat exchanging fin described in two panels is Copper or aluminium.
10. 10. single system wind cooling refrigerator according to claim 1, it is characterised in that the single system wind cooling refrigerator also includes： Blower fan, the blower fan are arranged between the evaporator and the supply air duct, for the sky that will be cooled down via the evaporator Gas is introduced in supply air duct.