CN106369913B - Refrigerator - Google Patents

Abstract

The invention discloses a refrigerator, comprising: a box body, the box body defines at least one refrigerating compartment, and a first air duct in fluid communication with the at least one refrigerating compartment is arranged on one side of the at least one refrigerating compartment; a semiconductor mold set, arranged in the box, and used to provide cooling capacity for the at least one refrigerating compartment, the semiconductor module has a cold end and a hot end, and the cold end is located in the first air duct; the evaporator is set In the evaporator cavity of the box body, the temperature of the hot end can be lowered; the second air duct is independently arranged relative to the first air duct, the hot end is located in the second air duct, and the second air duct Including the air inlet duct and the air return duct, the cold air flows from the evaporator through the air inlet duct to the hot end, and then returns to the evaporator through the air return duct. The cost of the refrigerator provided by the invention is relatively low, and the refrigeration compartment can realize the functions of constant temperature and constant humidity (high humidity).

Description

refrigerator

technical field

The invention relates to the field of household appliances, in particular to a 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 an independent freezer and outer door of the freezer, so that they can be separated according to different storage temperatures. store. 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.

With the improvement of people's living standards, people put forward higher requirements for refrigerators, such as: to make refrigerators more suitable for cold storage of various foods, because food (such as vegetables, fruits, etc.) preservation is quite sensitive to temperature fluctuations , especially for food preservation in the refrigerated temperature zone, temperature fluctuations will drive humidity changes, and the water evaporated from the food will continue to be lost in the form of refrigerated dew, which will greatly shorten the food preservation period. Therefore, it is necessary for the refrigerator to have constant temperature and constant humidity (high humidity) functions, but no matter it is a direct-cooled or air-cooled refrigerator, the relative humidity of the refrigerator is relatively low, and the temperature fluctuates greatly. The control system can reduce the temperature fluctuation of the refrigerator, but the temperature fluctuation is not in the ideal range, and the cost of the inverter compressor and the inverter control system is very high.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a refrigerator, the cost of which is low and the refrigeration compartment can realize the functions of constant temperature and constant humidity (high humidity).

In order to achieve the above-mentioned purpose of the invention, the present invention provides a refrigerator, comprising: a box body, the box body defines at least one refrigerating compartment, one side of the at least one refrigerating compartment is provided with a first Air duct; a semiconductor module set in the box for providing cooling capacity to the at least one refrigeration compartment, the semiconductor module has a cold end and a hot end, and the cold end is located in the first air duct ; The evaporator is arranged in the evaporator cavity of the box body, and can cool the hot end; the second air duct is independently arranged relative to the first air duct, and the hot end is located in the second air duct, so The second air duct includes an air inlet duct and an air return duct. The cold air flows from the evaporator through the air inlet duct to the hot end, and then returns to the evaporator through the air return duct.

As a further improvement of an embodiment of the present invention, the first air duct and the second air duct are arranged side by side along the thickness direction of the refrigerator.

As a further improvement of an embodiment of the present invention, the at least one refrigerated compartment includes a refrigerated compartment, a middle door compartment, and a freezer compartment from top to bottom, the evaporator is arranged at the rear of the freezer compartment, and the semiconductor The module is arranged at the rear of the middle door chamber.

As a further improvement of an embodiment of the present invention, a water receiving box is provided at the bottom of the cold end of the semiconductor module inside the middle door chamber.

As a further improvement of an embodiment of the present invention, a first fan is provided at the rear of the freezer compartment, and the first fan is used to introduce cold air from the evaporator into the freezer compartment and the refrigerator compartment, and the rear side of the middle door compartment is provided The second fan is used to introduce the cold air from the cold end of the semiconductor module into the middle door chamber.

As a further improvement of an embodiment of the present invention, the refrigerating room is provided with a refrigerating air inlet channel in fluid communication with the second air channel and a refrigerating return air channel in fluid communication with the evaporator cavity, and the cold air passes through the evaporator The second air channel enters the refrigerated air intake channel, and then returns to the evaporator through the refrigerated return air channel.

As a further improvement of an embodiment of the present invention, the return air duct of the second air duct is provided with a return air switch, and the return air switch can selectively connect the return air duct of the second air duct with the refrigerating return air. The channels are fluidly connected or disconnected.

As a further improvement of an embodiment of the present invention, a middle door damper is set at the communication point between the second air duct and the evaporator cavity, and a refrigerating damper is set at the communication position between the second air duct and the refrigerating air inlet duct, and the The middle door damper and the refrigerating damper can be selectively opened or closed.

As a further improvement of an embodiment of the present invention, both the middle door damper and the refrigerating damper are configured as a one-to-two type damper in which one motor drives two blades.

As a further improvement of an embodiment of the present invention, the second air passage includes a left air passage and a right air passage arranged side by side along the width direction of the refrigerator, and the middle door damper and the refrigerating damper respectively include two , and correspond to the setting of the left air passage and the right air passage.

As a further improvement of an embodiment of the present invention, the refrigerator can switch between at least two of the following three refrigeration modes. In the first conventional refrigeration mode, cold air passes through the left air duct and the right One of the side air passages is sent into the refrigerating air inlet; the second high supply air temperature mode, the cold air is sent from the evaporator to the refrigerating through the other of the left air passage and the right air passage; the third mixed air supply Mode, cold air is sent from the evaporator to the refrigerated air duct through the left and right air ducts.

As a further improvement of an embodiment of the present invention, the return air duct of the second air duct is provided with a return air switch, and in the high supply air temperature mode and mixed air supply mode, the refrigerating return air duct and the refrigerating return air duct are disconnected by closing the return air switch. Fluid communication between the return air passages of the second air passage.

As a further improvement of one embodiment of the present invention, the refrigerator includes two cold air circulation systems, the first cold air circulation system: the cold air enters the freezer and the refrigerator from the evaporator and then returns to the evaporator; the second cold air circulation system: the cold air Circulate between the first air passage and the middle door chamber from the cold end.

As a further improvement of an embodiment of the present invention, the second air passage includes a left air passage and a right air passage arranged side by side along the width direction of the refrigerator, and the hot end is arranged in the left air passage and the right air passage one of.

As a further improvement of an embodiment of the present invention, the refrigerator can switch between at least two of the following three air intake modes. In the first air intake mode, cold air enters the left air path from the evaporator and one of the air passages on the right; the second air intake mode, cold air enters the left air passage from the evaporator and the other one of the right air passages; the third mixed air supply mode, cold air enters the left air passage from the evaporator Wind Road and Right Wind Road.

Compared with the prior art, the beneficial effect of the present invention is that the refrigeration compartment of the refrigerator of the present invention is provided with double air ducts, and is refrigerated by the semiconductor module, thereby realizing constant temperature and constant humidity (high humidity) functions. In addition, dual air ducts and semiconductor module refrigeration are used in the middle door compartment of the refrigerator. The temperature of the refrigerated air supply is high, which is beneficial to food preservation and prevents frostbite. It can also realize multiple air supply modes in the refrigerating room to meet the different needs of users.

Description of drawings

Fig. 1 is a schematic rear view of a refrigerator in a preferred embodiment of the present invention;

Fig. 2 is a right view of the refrigerator in Fig. 1;

Fig. 3 is a schematic diagram of a semiconductor module of the refrigerator in Fig. 1;

Fig. 4 is a schematic diagram of the air duct of the middle door chamber of the refrigerator in Fig. 1 .

Detailed ways

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.

As shown in Figures 1 to 2, the preferred embodiment of the present invention discloses a refrigerator 100. The refrigerator 100 includes a box body, and the box body defines three refrigerated compartments, which are respectively the refrigerated compartment 20, the middle compartment The door compartment 30 and the freezer compartment 40, generally, the refrigerator compartment 20, the middle door compartment 30 and the freezer compartment 40 are arranged from top to bottom. In this embodiment, the direction in which the refrigerator compartment 20, the middle door compartment 30, and the freezer compartment 40 are arranged from top to bottom is defined as the height direction of the refrigerator, and the direction in which the user opens the refrigerator facing the refrigerator door and facing away from the refrigerator door is defined as the thickness of the refrigerator The direction perpendicular to the height direction and the thickness direction is defined as the width direction of the refrigerator. The refrigerator also has an evaporator 50 and a freezing fan 502. The evaporator 50 is arranged in the evaporator chamber 501 at the rear portion of the freezer compartment 40 of the casing, and the freezing fan 502 is arranged on the top of the evaporator 50 in the evaporator chamber 501. The lower part is provided with a defroster 70 . The evaporator 50 can be any known evaporator, such as one of fin evaporator, wire tube evaporator, blown evaporator and plate tube evaporator. In this embodiment, the refrigerator 100 forms a compression refrigeration cycle system through a compressor (not shown), a condenser (not shown) and an evaporator 50, and a refrigeration fan 502 introduces cold air from the evaporator 50 into the freezer compartment 40 and the refrigerator compartment 20, that is, the refrigerating fan 502 and the circulating air ducts leading to the freezing chamber 40 and the refrigerating chamber 20 form a first cold air circulation system. When working, the compressor promotes the circulation of the refrigerant, and the refrigerant entering the evaporator 50 absorbs heat and evaporates. The refrigeration fan 502 is sent to the corresponding refrigeration compartment through the circulating air duct, that is, the cold air enters the refrigerator compartment 20 through the freezer compartment 40, that is, the refrigerator compartment 20 and the refrigerator compartment. Refrigeration of the freezer compartment 40 is provided by the compression refrigeration system of the refrigerator 100 .

The refrigerator 100 in the present embodiment also includes a semiconductor module 60, as shown in Figure 3, the semiconductor module 60 is an integrated module, including a cold end heat exchanger, a hot end heat exchanger, and a The semiconductor chip 606 , the cold end heat exchanger and the hot end heat exchanger are referred to here as cold end 602 and hot end 604 for short. The semiconductor module 60 is arranged at the rear of the middle door chamber 30 in the box body, and one side of the middle door chamber 30 is provided with a cooling air passage in fluid communication with it, that is, the first air passage D of the middle door chamber 30, preferably, the first air passage D of the middle door chamber 30. An air duct D is arranged at the rear of the middle door chamber 30, the cold end 602 of the semiconductor module 60 is located in the first air duct D, and a middle door fan 302 is also arranged in the first air duct D, and the middle door fan 302 is located in the first air duct D. The upper part of the cold end 602 is used to introduce the cold air from the cold end 602 into the middle door chamber 30 . Wherein, the air flow inside the middle door chamber 30 and the cold end 602 circulate through the first air duct D, that is, the cold air generated by the cold end 602 enters the middle door chamber 30 through the air inlet of the first air duct D, and then returns to the cold air outlet from the air outlet. End 602, so the circulation air duct of the door chamber 30 constitutes the second cold air circulation system.

1 and 4, the rear end of the middle door chamber 30 is also provided with a second air duct, the second air duct is located on the rear side of the first air duct D and is independently set relative to the first air duct D, that is to say , there is no fluid communication between the second air duct and the first air duct D, and the two air ducts are arranged side by side with respect to the thickness direction of the refrigerator 100 . The hot end 604 is located in the second air channel, and the second air channel includes the air inlet channel 304 and the air return channel 306 (the air channel through which the airflow shown by the arrow M2 shown in Figure 2 passes), and the cold wind passes through the air inlet channel 304 from the evaporator 50 Flow to the hot end 604 and return air to the evaporator 50 through the return air duct 306. Preferably, the hot end 604 is arranged in the air intake duct 304, the first air duct D is adjacent to the air intake duct 304, and the second air duct and The first air duct D is collectively referred to as the middle door air duct, and the semiconductor module 60 is located in the middle of the middle door air duct, so that the semiconductor module is easy to install and occupies a small space.

The first air duct D and the second air duct form the front and rear double-layer air ducts, and the wind circulation of each air duct is independent, and the airflow inside the middle door chamber 30 circulates through the first air duct D and the semiconductor cold-end heat exchanger , the cold air circulation inside the middle door chamber 30 is realized by a separate middle door fan 302; the cold air sucked by the evaporator 50 is radiated by the semiconductor hot end 602 in the second air duct, and then returns to the bottom of the evaporator 50 through the middle door return air duct 306 , exchange heat with the evaporator 50 again. Therefore, it can be said that the cooling of the middle door chamber 30 is provided by the semiconductor module 60 . When the second air duct is used to dissipate heat for semiconductors, it is necessary to ensure sufficient cooling capacity to take away the maximum heat generated by the semiconductors during operation, that is, to ensure the lowest cooling temperature in the middle door chamber.

The cooling temperature range of the middle door chamber is between 5-12°C. Therefore, the semiconductor cold-end heat exchanger needs to ensure that the temperature is not lower than 0°C (according to test experience, it is generally lower than the temperature of the cooling room by 3-5°C), to ensure that the middle door The water vapor inside the chamber 30 will not condense on the cold-end heat exchanger, resulting in a decrease in internal humidity; the bottom of the cold-end heat exchanger inside the middle door chamber 30 is provided with a water receiving box 309 to prevent water vapor from condensing on the cold-end heat exchanger When drip storage.

Freezing air duct C is provided at the rear of freezer compartment 40, and refrigerating air duct is provided at the rear of refrigerating chamber 20. The channel B2 is formed, and the freezing fan 502 delivers the cold air to the freezing room 40 and the refrigerating room 20 through the freezing air channel C and the refrigerating air channel. The second air passage includes a left air passage and a right air passage A arranged side by side along the width direction of the refrigerator, wherein the left air passage and the first refrigerating air passage B1 overlap, or share, that is, they may be the same air passage. The second section of refrigerated air duct B2 can be considered as the refrigerated air intake duct, and the hot end is located in the right air duct A. Affected. In addition, the refrigerating air duct C and the second section of refrigerating air duct B2 may be in fluid communication through the right air duct A. Of course, it is also possible that the first section of refrigerating air channel B1 is arranged on the right side, while the hot end 604 is located in the left air channel. The above-mentioned second air passage includes two air passages. Those skilled in the art can easily imagine that the second air passage is a single air passage, and it can also realize that the middle door chamber has a separate refrigeration compartment relative to the refrigerator compartment or freezer compartment. circulatory system.

The rear end of the refrigerating air inlet duct of the refrigerating room 20 is provided with a refrigerating room return air outlet 207 and a refrigerating return air duct 206 in fluid communication with the evaporator chamber 501, that is, the air duct through which the air flow shown by the arrow M1 in FIG. The evaporator 50 enters the second refrigerating air duct B2, and then returns air to the evaporator 50 through the refrigerating return air duct 206 . Similarly, the rear end of the middle door chamber 30 is provided with a middle door chamber air return port 307, after the cold air exchanges heat with the hot end 604, it enters the return air passage 306 of the middle door chamber 30 through the middle door chamber air return port 307, and the return air of the middle door chamber 30 The air duct 306 can be selectively connected to or disconnected from the refrigerated return air duct 206, that is, the return air duct 306 of the second air duct is provided with a return air switch 308, and the return air duct of the second air duct can be optionally connected to the air return duct 308 by the return air switch 308. 306 is in fluid communication with or isolated from the refrigerating return air duct 206 . Such an arrangement of the air duct is relatively compact, and of course, the return air duct 306 of the second air duct can also be set independently from the refrigerated return air duct 206 .

The middle door damper ZM1 is set at the connection between the first refrigerating air duct B1 and the evaporator cavity, and the refrigerating damper LC1 is set between the first refrigerating air duct B1 and the second refrigerating air duct B2, through controlling the middle door damper ZM1 and the refrigerating damper The opening and closing of LC1 can realize fluid communication or disconnection between the evaporator chamber and the first section of refrigerating air duct B1, and between the first section of refrigerating air duct B1 and the second section of refrigerating air duct B2.

The middle door damper ZM2 is set at the connection between the right air path A of the second air duct and the evaporator chamber 501, and the refrigerating air duct is set at the connection between the right air path A of the second air duct and the second section of refrigerating air duct B2, that is, the refrigerating air inlet duct. Damper LC2, by controlling the opening and closing of the middle door damper ZM2 and the refrigerating damper LC2, the air between the evaporator chamber 501 and the right air passage A of the second air passage, the right air passage A of the second air passage and the second air passage can be realized. The fluid connection or disconnection between the two-stage refrigerating air ducts B2.

The aforementioned middle door dampers ZM1, ZM2 and refrigerated dampers LC1, LC2 are all one-to-two type dampers in which one motor drives two blades, that is, the two blades can be opened and closed independently without affecting each other.

In this embodiment, the cross-sectional shapes of all the air ducts are substantially rectangular, and of course they may also be circular, square or other shapes. In addition, in the refrigerator compartment 20, the middle door compartment 30 and the freezer compartment 40, respective indoor temperature sensors (not shown) and controllers (not shown) are installed in the refrigerator compartment 20, the middle door compartment 30 and the freezer compartment. The signal transmitted by the temperature sensor in the chamber 40 adjusts the working condition of the compressor or the opening and closing or opening of the damper, so that the refrigerator is maintained at the set state.

Preferably in this embodiment, by controlling the two middle door dampers ZM1, ZM2 and the two refrigeration dampers LC1, LC2, the refrigerator can be switched between the following refrigeration modes or air intake modes:

The first type: conventional refrigeration mode, that is, the middle door damper ZM1 and the refrigerating damper LC1 leaves are opened, the middle door damper ZM2 and the refrigerating damper LC2 leaves are closed, and the cold air is sucked from the evaporator 50 by the refrigeration fan 502 and then passes through the first stage of refrigeration. The air channel B1 and the second refrigerating air channel B2 are sent into the refrigerating room 20 to cool the refrigerating room 20, that is, the conventional refrigerator refrigerating air supply mode, and the temperature of the refrigerating air supply outlet is generally lower than -10°C;

The second type: high air supply temperature mode, that is, the middle door damper ZM1 and the refrigerating damper LC1 blades are closed, the middle door damper ZM2 and the refrigerating damper LC2 blades are opened, and the cold air is sucked from the evaporator 50 by the refrigeration fan 502 and then passed through the second The air passage A on the right side of the air passage and the second section of the refrigerating air passage B2 are sent into the refrigerator room 20 to cool the refrigerator room 20. Since the cold air passes through the right air passage A of the second air passage, it exchanges heat with the semiconductor hot end 604 Then it is sent to the refrigerator room 20, so the temperature of the air supplied to the refrigerator room 20 is higher than that of the conventional refrigeration mode, and the temperature is about -5°C to 0°C; After the room 20 returns to the bottom of the evaporator 50 through the refrigerating return air duct 206, it is avoided that part of the cold air will flow to the middle door return air duct 306 while delivering cold air to the refrigerating room, which will affect the air supply volume of the refrigerating unit; in this mode, the refrigerating air supply The temperature difference between the temperature and the refrigerating and refrigerating temperature is small, which can prevent frostbite to the fruits and vegetables inside the refrigerating chamber 20, and is beneficial to condensation and freezing inside the air duct of the refrigerator caused by low air supply temperature;

The third type: Mixed air supply mode, the middle door damper ZM1 and the refrigerating damper LC1 blades are opened, the middle door damper ZM2 and the refrigerating damper LC2 blades are also opened, the cold air is sucked from the evaporator 50 by the refrigeration fan 502, and then passes through the second air The air path A on the right side of the road and the first section of refrigerating airway B1 are sent to the refrigerating room 20 through the second section of refrigerating airway B2 to cool the refrigerating room 20. In this cooling mode, the refrigerating fan 502 corresponds to a higher fan speed , the air supply volume of the refrigerator is large, and the air supply temperature is between the first and the second air supply temperature, and the air supply temperature is between -10°C and -5°C; in this mode, the refrigeration depends on increasing the air supply temperature. The air volume can achieve rapid cooling, which is suitable for rapid cooling when a large amount of hot food is placed in the refrigerator; in this mode, the return air switch 362 of the middle door is closed, and the cold air is sent to the refrigerator and returned to the bottom of the evaporator 50 through the refrigerator return air to avoid While delivering cold air to the refrigerator, part of the cold air will flow to the return air passage 306 of the middle door, which will affect the air supply volume of the refrigerator.

The cooling of the middle door chamber in this embodiment is controlled by the semiconductor module 60 alone, therefore, when the middle door chamber 30 is not in use, it can be closed separately. In addition, it is often not necessary to open the refrigerating room 20 in winter. If the refrigerating room needs to be closed separately, it is only necessary to close the middle door dampers ZM1, ZM2 and/or the refrigerating dampers LC1 and LC2. Start and stop and intermittent rotation, thereby reducing power consumption.

The above is the preferred solution. For example, a refrigerator only needs a variety of refrigeration and air supply modes, and the semiconductor module may not be required to cool the door chamber separately. The heat source is used to heat up the cold air, that is, the cold air is sucked from the evaporator by the refrigeration fan and then sent to the refrigerator through the heat source. Therefore, the temperature of the air sent to the refrigerator is higher than that of the conventional refrigeration mode. In this way, by controlling the opening or closing of the dampers of the two air passages, the refrigerator can also be switched between multiple refrigerated air supply modes.

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 (14)

1. a kind of refrigerator characterized by comprising

Cabinet, the cabinet define an at least refrigeration compartment, and the side of at least one refrigeration compartment is provided with and it The first air duct being in fluid communication；

Semiconductor module group is arranged in cabinet, for providing cooling capacity, the semiconductor module group to an at least refrigeration compartment With cold and hot end, the cold end is located in first air duct；

Evaporator is arranged in the evaporator chamber of cabinet, can cool down to the hot end；

Second air duct, relatively described first air duct are independently arranged, and the hot end is located in second air duct, second air duct Including air inlet duct and air -return duct, cold wind flash-pot flows to hot end again through air -return duct return air to evaporator through air inlet duct, described Second air duct includes the left side wind path and right side wind path being arranged side by side along refrigerator width direction, and the hot end is arranged in left side wind path With one in the wind path of right side.

2. refrigerator according to claim 1, which is characterized in that first air duct and the second air duct are along the refrigerator Thickness direction is arranged side by side.

3. refrigerator according to claim 1, which is characterized in that an at least refrigeration compartment includes refrigeration from top to bottom Room, the room Zhong Men and freezing chamber, the evaporator are set to the rear portion of the freezing chamber, and the semiconductor module group is arranged described The rear portion of the room Zhong Men.

4. refrigerator according to claim 3, which is characterized in that the cold end bottom of the middle door chamber interior semiconductor module group is set It is equipped with water receiver.

5. refrigerator according to claim 3, which is characterized in that the rear portion of the freezing chamber is arranged the first blower, and described the One blower is used to introduce in flash-pot cold wind freezing chamber and refrigerating chamber, and the second blower is arranged in the rear side of the room Zhong Men, described Second blower is used to the cold wind of semiconductor module group cold end introducing the room Zhong Men.

6. refrigerator according to claim 3, which is characterized in that the refrigerating chamber is provided with to be connected with second air duct fluid Logical refrigeration air inlet duct and the refrigeration air -return duct being in fluid communication with the evaporator chamber, cold wind flash-pot pass through the second air duct Into refrigeration air inlet duct, then through refrigeration air -return duct return air to evaporator.

7. refrigerator according to claim 6, which is characterized in that the air -return duct setting return air in second air duct switchs, institute Return air is stated to switch the selectable air -return duct by second air duct and refrigeration air -return duct fluid communication or separate.

8. refrigerator according to claim 6, which is characterized in that second air duct and the evaporator chamber connectivity part are arranged Middle tradition of a family door, second air duct and the refrigeration air inlet duct connectivity part setting refrigerates air door, the middle tradition of a family door with it is described cold Air door is selectable turns on or off for hiding.

9. refrigerator according to claim 8, which is characterized in that the middle tradition of a family door and the refrigeration air door are configured to one The two-driven-by-one air door of two flabellums of a motor drag.

10. refrigerator according to claim 8, which is characterized in that second air duct include along refrigerator width direction side by side The left side wind path and right side wind path of setting, the middle tradition of a family door and the refrigeration air door respectively include two, and the corresponding left side Crosswind road and the setting of right side wind path.

11. refrigerator according to claim 10, which is characterized in that the refrigerator can be in following three kinds of refrigeration modes It is converted between at least two refrigeration modes, the first normal refrigeration mode, cold air is from evaporator through left side wind path and right side A feeding in wind path refrigerates air inlet duct；Second high supply air temperature mode, cold air is from evaporator through left side wind path and right side Another in wind path is sent into refrigeration；The third mixed ventilation mode, cold air are sent from evaporator through left side wind path and right side wind path Enter to refrigerate air inlet duct.

12. refrigerator according to claim 11, which is characterized in that the air -return duct setting return air in second air duct switchs, Under the high supply air temperature mode and mixed ventilation mode, refrigeration air -return duct and the second air duct are disconnected by closing return air switch Fluid communication between air -return duct.

13. refrigerator according to claim 3, which is characterized in that the refrigerator includes two kinds of cold air circulating systems, and first is cold Air circulating system: cold wind flash-pot returns evaporator after entering freezing chamber and refrigerating chamber；Second cold air circulating system: cold wind It is recycled between the first air duct and the room Zhong Men from the cold end.

14. refrigerator according to claim 1, which is characterized in that the refrigerator can be in following three kinds of air intake modes It is converted between at least two air intake modes, the first air intake mode, cold air enters left side wind path and three o'clock wind from evaporator One in road；Second of air intake mode, cold air enter another in left side wind path and right side wind path from evaporator；The third Mixed ventilation mode, cold air enter left side wind path and right side wind path from evaporator.