CN102538339A - Refrigerator and method for controlling same - Google Patents

Abstract

The invention provides a refrigerator and a method for controlling the same. The refrigerator comprises a freezing space, a refrigerating space, a temperature varying space, a compressor, a condenser, a freezing evaporator, a refrigerating evaporator, a freezing air channel, a refrigerating air channel, a temperature varying air channel, refrigerating fans and a refrigerating air door, wherein the outlet end of the freezing air channel is communicated with the freezing space; the outlet end of the refrigerating air channel is communicated with the refrigerating space; the temperature varying air channel is connected in parallel with the refrigerating air channel; the outlet end of the temperature varying air channel is communicated with the temperature varying space; the refrigerating fans are arranged between the refrigerating evaporator and the temperature varying air channel and between the refrigerating evaporator and the refrigerating air channel, and are used for blowing cold air which is generated by the refrigerating evaporator into the inlet end of the temperature varying air channel and the inlet end of the refrigerating air channel; and the refrigerating air door is arranged at the inlet end of the refrigerating air channel. By the refrigerator, temperatures of the freezing space, the refrigerating space and the temperature varying space can be controlled independently and are not interfered with one another.

Description

Refrigerator and refrigerator control method

technical field

The invention relates to the field of refrigeration, and more specifically, to a refrigerator and a method for controlling the refrigerator.

Background technique

At present, side-by-side refrigerators are generally composed of two compartments, a refrigerating space and a freezing space, and the refrigerating space and the freezing space are separated by a casing. The temperature of the refrigerated space is above 0°C, and the temperature of the refrigerated space is below -6°C. Because different users have different volume requirements for the refrigerated space and the refrigerated space, a refrigerator often cannot meet the user's requirements for large refrigerated space and large refrigerated space at the same time. In addition, the traditional side-by-side doors are inconvenient to place large-scale food due to the limited size of the refrigeration and freezing space.

Because people have different requirements for the volume of refrigerator compartments in different seasons, most users want to have an independent temperature-adjustable compartment. The temperature of this compartment can be set as a refrigerating space or as a freezing space to meet the storage of food in different seasons. requirements.

The existing side-by-side refrigerators with temperature-variable space are equipped with a temperature-variable drawer in the refrigerated space. The temperature of the temperature-variable drawer can be between 8°C and -7°C. For storing smaller foods. Existing side-by-side refrigerators with temperature-variable spaces are shown in Figures 1 to 3, and side-by-side refrigerators include a freezing space and a refrigerating space. Freezing door body 1 ' is used for opening and closing freezing space, and refrigerating door body 2 ' is used for opening and closing refrigerating space. As shown in Figure 2, the cold air cooled by the freezing evaporator 7' is blown to the freezing air duct 5' through the freezing fan 6', and then the cold wind enters the freezing space through a plurality of freezing air outlets to cool the freezing space. As shown in Figure 3, the refrigerated space is refrigerated by the cold air conveyed by the refrigerated air duct 9' and the refrigerated air duct 8' arranged therein. The refrigerated drawer 10' is arranged in the refrigerated space. In addition, a variable temperature space is provided at the bottom of the refrigerated space. A variable temperature space barrel 11' is arranged around the variable temperature space. The shell of the variable temperature space barrel 11' is filled with EPS insulation boards. A temperature-variable drawer 12' is arranged in the temperature-variable space barrel 11', and the temperature-variable drawer 12' is separated from other spaces in the refrigerated space by the variable temperature space barrel 11', so as to avoid the temperature of the variable-temperature space from affecting the refrigerated space. As shown in Figure 1, an independent temperature-variable air outlet 3' is set at the center beam at the lower part of the refrigerated space to supply air to the variable-temperature space. An independent temperature-variable air door 4' is installed in the variable-temperature air outlet 3', and the variable-temperature air door 4' is used to control the variable temperature. the temperature of the space. The control principle of the variable temperature space is: when the sensor of the variable temperature space detects that the temperature of the variable temperature space is higher than the set starting point temperature, the temperature variable damper 4' is opened, and the cold air is blown into the variable temperature space from the freezing space, and the variable temperature space is refrigerated at this time; When the sensor detects that the temperature in the temperature-variable space is lower than the set shutdown point temperature, the temperature-variable damper 4' is closed, and the temperature-variable space is not cooled at this time.

In the above prior art, because the surroundings of the temperature-variable space barrel 11' need to be thicker, the volume of the temperature-variable drawer 12' is small, which makes it inconvenient to store food, and the temperature of the temperature-variable space is easily affected by the temperature of the freezing space, so it is not easy to control.

Contents of the invention

The purpose of the present invention is to provide a refrigerator and a refrigerator control method in which the temperatures of the freezing space, the refrigerating space and the variable temperature space can be controlled independently, and the temperatures of each compartment are not affected by each other.

The invention provides a refrigerator, comprising a freezing space, a cold storage space, a variable temperature space, a compressor, a condenser, a freezing evaporator, a refrigeration evaporator, a freezing air duct and a refrigeration air duct, the outlet end of the freezing air duct is connected to the The refrigerating space is connected, and the outlet end of the refrigerating air duct is in communication with the refrigerating space. The refrigerator also includes: a variable temperature air duct, which is arranged in parallel with the refrigerating air duct, and the outlet end of the variable temperature air duct is connected to the refrigerating air duct. The variable temperature space is connected; the refrigerating fan is arranged between the refrigerating evaporator, the variable temperature air duct and the refrigerating air duct, and is used to blow the cold air generated by the refrigerating evaporator into the variable temperature air duct and the refrigerating air duct respectively. The inlet end of the refrigerating air duct; the refrigerating damper is arranged at the inlet end of the refrigerating air duct.

Further, the refrigerator further includes: a quick-freezing space; a quick-freezing air duct arranged in parallel with the freezing air duct, and the outlet end of the quick-freezing air duct communicates with the quick-freezing space; a freezing fan arranged in the freezing evaporator Between the quick-freezing air duct and the freezing air duct, it is used to blow the cold air generated by the freezing evaporator into the inlet ends of the quick-freezing air duct and the freezing air duct respectively; the freezing air door is arranged on the The inlet end of the refrigeration duct.

Further, the refrigerating evaporator and the refrigerating evaporator are arranged in parallel; the refrigerator also includes a distributing device, and the distributing device is used to distribute the refrigerant from the condenser between the refrigerating evaporator and the refrigerating evaporator. distribution between evaporators.

Further, the refrigerated space is provided with a refrigerated space air return port, and the temperature variable space is provided with a variable temperature space return air port.

Further, the refrigerator further includes: a freezing and dew removal pipe arranged downstream of the compressor; a refrigerating and dew dew pipe arranged downstream of the freezing and dew dew pipe.

Further, the variable temperature space is arranged at the lower part of the refrigerated space and separated from the refrigerated space by a partition.

Further, the refrigerator is a side-by-side refrigerator, the refrigerating space is set on the same side as the temperature-variable space, and the freezing space is set on the same side as the quick-freezing space.

Further, the refrigerator includes a refrigerating door for simultaneously opening or closing the refrigerating space and the variable temperature space; or the refrigerator includes a refrigerating space door for opening or closing the refrigerating space and a The variable temperature space door body is used to open or close the variable temperature space.

The present invention also provides a control method for controlling the aforementioned refrigerator. The control method includes: judging whether the refrigerating space and the variable temperature space of the refrigerator need to be refrigerated; The compressor, refrigerating evaporator, and refrigerating fan work, and the refrigerating damper of the refrigerator is opened to cool the refrigerating space and the variable temperature space at the same time; it is judged that the refrigerating space does not need cooling, and the variable temperature space needs cooling At this time, the compressor, the refrigerating evaporator and the refrigerating fan are operated, and the refrigerating damper is closed to cool the variable temperature space.

Furthermore, the present invention also provides a control method for controlling the aforementioned refrigerator, the control method comprising: judging whether the refrigerating space and the variable temperature space of the refrigerator need to be refrigerated; The compressor, refrigerating evaporator, and refrigerating fan of the refrigerator work, and the refrigerating damper of the refrigerator is opened to cool the refrigerating space and the variable temperature space at the same time; it is judged that the refrigerating space does not need refrigeration, and the variable temperature When the space needs to be refrigerated, make the compressor, the refrigerating evaporator and the refrigerating fan work, and close the refrigerating damper to refrigerate the variable temperature space; determine whether the refrigerating space and quick-freezing space of the refrigerator need Refrigeration: when it is judged that the refrigerated space needs to be refrigerated, the compressor, refrigerating evaporator, and refrigerating fan of the refrigerator are operated, and the refrigerating damper of the refrigerator is opened to simultaneously refrigerate the refrigerated space and the quick-freezing space When it is judged that the freezing space does not need refrigeration, and the quick-freezing space needs cooling, the compressor, the freezing evaporator and the freezing fan are operated, the freezing damper is closed, and the quick-freezing space is refrigerated.

Furthermore, the present invention also provides a control method for controlling the aforementioned refrigerator, the control method comprising: judging whether the refrigerating space and the variable temperature space of the refrigerator need to be refrigerated; The compressor, refrigerating evaporator, and refrigerating fan of the refrigerator work, and the refrigerating damper of the refrigerator is opened to cool the refrigerating space and the variable temperature space at the same time; it is judged that the refrigerating space does not need refrigeration, and the variable temperature When the space needs to be refrigerated, make the compressor, the refrigerating evaporator and the refrigerating fan work, and close the refrigerating damper to refrigerate the variable temperature space; determine whether the refrigerating space and quick-freezing space of the refrigerator need Refrigeration: when it is judged that the refrigerated space needs to be refrigerated, the compressor, refrigerating evaporator, and refrigerating fan of the refrigerator are operated, and the refrigerating damper of the refrigerator is opened to simultaneously refrigerate the refrigerated space and the quick-freezing space When it is judged that the freezing space does not need refrigeration, and the quick-freezing space needs refrigeration, the compressor, the freezing evaporator and the freezing fan are operated, the freezing air door is closed, and the quick-freezing space is refrigerated; The control method further includes: adjusting the distributing device of the refrigerator according to the judging results of judging whether the refrigerated space and the variable-temperature space need refrigeration and whether the freezing space and the quick-freezing space need refrigeration, so that the refrigerator Switching between two states of refrigerating evaporator working alone and freezing evaporator working alone; or judging whether the refrigerating space and the variable temperature space need cooling and judging whether the freezing space and the quick-freezing space need cooling As a result, the dispensing device of the refrigerator was adjusted so that the refrigerator could be switched between three states: refrigerating evaporator working alone, freezing evaporator working alone, and refrigerating evaporator and freezing evaporator working simultaneously.

According to the refrigerator of the present invention, evaporators and fans are separately provided for the freezing space and the refrigerating space, so the temperatures of the freezing space, the refrigerating space, and the variable temperature space can be controlled independently, and the temperatures of each chamber are not affected by each other. In addition, an independent variable temperature space is designed in the lower part of the refrigerated space. The variable temperature space and the refrigerated space are separated by a partition, and the temperature of the variable temperature space and the refrigerated space are not affected by each other. Moreover, the volume of the temperature-changing space in this way can be designed to be very large to meet the volume requirements of users for different temperature compartments in different seasons.

Description of drawings

The accompanying drawings constituting a part of this application are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 is a schematic structural view of a side-by-side refrigerator in the prior art;

Fig. 2 is the A'-A' schematic diagram of Fig. 1;

Fig. 3 is the B'-B' of Fig. 1 to structural representation;

Fig. 4 is a flow chart of the refrigeration system of the side-by-side refrigerator according to the present invention;

Fig. 5 is a structural schematic diagram of a side-by-side refrigerator according to the present invention;

Fig. 6 is a schematic diagram of the structure of A-A in Fig. 5; and

Fig. 7 is a schematic diagram of the structure along the B-B direction of Fig. 5 .

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

In the following, the present invention will be described only by taking a frost-free side-by-side dual-system refrigerator with variable temperature space and quick-freezing space and the refrigerator control method as examples.

As shown in Figures 4 to 7, the refrigerator of this embodiment mainly includes a refrigerating door body 21, a freezing door body 22, a freezing space, a refrigerating space, a variable temperature space, a quick freezing space, a compressor 1, a condenser 4, a freezing evaporator 8, Refrigeration evaporator 10, freezing air duct 16, refrigeration air duct 18, variable temperature air duct 19, quick freezing air duct 17, refrigeration fan 13, freezing fan 11, refrigeration damper 14, freezing damper 12 or the like. The outlet end of the refrigerating air duct 16 communicates with the refrigerating space, and is used to transport the cold wind produced by the refrigerating evaporator 8 to the refrigerating space; To the refrigerated space; the outlet end of the variable temperature air duct 19 communicates with the variable temperature space, and is used to transport the cold wind produced by the refrigerating evaporator 10 to the variable temperature space; The generated cold air is transported to the quick freezing space.

As shown in Figure 4, the variable temperature air duct 19 and the refrigerating air duct 18 are arranged in parallel; Blow into the temperature-variable air duct 19 and the inlet end of the refrigerating air duct 18 respectively; Since the corresponding evaporators and fans are separately set up for the freezing space and the variable temperature space, and the freezing space and the variable temperature space are cooled separately through different evaporators, it can meet the cooling needs of the variable temperature space at different temperatures, and make the freezing space and variable temperature The temperature of the space does not affect each other, especially avoiding the influence of the temperature of the freezing space on the temperature of the variable temperature space.

The quick-freezing air duct 17 and the freezing air duct 16 are arranged in parallel; the freezing fan 11 is arranged between the freezing evaporator 8 and the quick-freezing air duct 17 and the freezing air duct 16, and is used to blow the cold wind produced by the freezing evaporator 8 into the quick-freezing air duct respectively. 17 and the inlet end of the freezing air duct 16; This setting can individually control the temperature of the quick-freezing space when fast cooling is required, so as to obtain a temperature lower than that of the cooling space, and quickly freeze food. Of course, in order to simplify the internal structure of the refrigerator, it is also possible not to set up a quick-freezing space according to needs. At this time, since there is no need to control the temperature of the two refrigeration spaces separately, the corresponding freezing damper can be canceled, and the freezing can be directly controlled by controlling the freezing evaporator. the temperature of the space.

The refrigerated space and the variable temperature space are arranged on the right side, and are opened and closed through the refrigerated door body 21 . The variable temperature space is preferably arranged at the lower part of the refrigerated space, and the refrigerated space and the variable temperature space are separated by the refrigerated space partition 25 into two spaces whose temperatures do not affect each other. The refrigerated space partition 25 can be designed to be detachable or non-detachable. In order to better reduce the temperature interference between the refrigerated space and the temperature-variable space, a separate door body for the refrigerated space and a door body for the variable-temperature space can be provided separately to realize the opening and closing of the refrigerated space and the variable-temperature space.

In this embodiment, the refrigerated space partition is used to thermally isolate the refrigerated space and the temperature-variable space, thereby forming a separate temperature-variable space. Since there is no temperature-variable space bucket, the excessive volume occupied by the temperature-variable space bucket is reduced, and the volume of the variable-temperature space can be compared to the current one. Some technologies have increased, for example, it can reach more than 50L, thereby increasing the refrigeration space. It is also possible to enlarge the temperature-variable space by setting the positions of the partitions in the refrigerated space as required, and arrange multiple drawers in the temperature-variable space. The temperature of the variable temperature space can be adjusted within the range of -7°C-8°C. The user can set the temperature of the variable temperature space in different temperature ranges according to the needs. When the user needs to store a large amount of fish and meat for a short time, the variable temperature space can be The temperature of the variable temperature space can be adjusted below 0°C, so that the variable temperature space becomes a soft freezing space; when the user needs a large refrigerated space, the temperature of the variable temperature space can be adjusted to above 0°C, and the variable temperature space can be used as a refrigerated space, so that the same model The refrigerator can meet the needs of different users for large freezing space and large cold storage space. Since the volume of the variable temperature space can be set larger, and the user can set the variable temperature space to different temperatures according to the needs, the user's requirements for the volume of different temperature ranges are met, and it is convenient for the user to store food.

The freezing space and the quick-freezing space are arranged on the left side, and are opened and closed by the freezing door body 22 . The quick-freezing space is preferably provided at the lower part of the freezing space, and in this embodiment, the quick-freezing space is formed in the form of three quick-freezing drawers 24 . Similar to the variable temperature space, the quick freezing space can realize individual temperature control. Of course, the size of the quick-freezing space or the number of quick-freezing drawers can be set according to needs; the freezing space partition can also be set to thermally isolate the freezing space and the quick-freezing space, so as to control the temperature of the quick-freezing space more effectively.

As shown in Fig. 5 and Fig. 7, an independent refrigerated space return air outlet 23 is set in the middle of the refrigerated space, and the cold air in the refrigerated space is sent back to the refrigerated evaporator 10 through the refrigerated return air duct 27, which can avoid the cold air of the refrigerated space under low temperature. The lower part is too cold. Simultaneously, the variable temperature space return air outlet is also provided with the variable temperature space return air outlet at the temperature variable drawer 26 rear portion at the bottom of the temperature variable space, and the cold air in the temperature variable space is sent back to the refrigerating evaporator 10 . The return air outlets of the refrigerated space and the variable temperature space are independently set to reduce the temperature interaction between the refrigerated space and the variable temperature space. It can ensure that when the variable temperature space is used as a soft freezing space, the cooling effect can meet the requirements and avoid freezing and deterioration of vegetables in the refrigerated space.

Similar to the refrigerated space and variable temperature space, it is also possible to set an independent return air outlet for the refrigerated space and a refrigerated return air duct (not shown) corresponding to the refrigerated space, and to set an independent return air outlet for the quick-freezing space and the return air for the quick-freezing space corresponding to the quick-freezing space air duct.

As shown in Figure 4, in the refrigerator refrigeration system of the present embodiment, the refrigeration evaporator 10 and the freezing evaporator 8 are arranged in parallel; 8 and refrigerated evaporator 10. In this embodiment, the electric valve 6 is used as the distribution device, wherein the inlet port of the electric valve communicates with the condenser 4 , and the two outlet ports communicate with the freezing evaporator 8 and the refrigeration evaporator 10 respectively.

Specifically, the refrigeration system of the refrigerator in this embodiment starts from the outlet of the compressor 1, and is sequentially connected with the freezing dew pipe 2, the refrigerating dew pipe 3, the condenser 4, the dry filter 5, the electric valve 6, and the outlet of the electric valve 6. A refrigerating branch and a freezing branch are arranged in parallel, wherein the refrigerating branch is composed of a refrigerating capillary 9 and a refrigerating evaporator 10 arranged on the refrigerating capillary 9, and the freezing branch is composed of a refrigerating capillary 7 and a refrigerating evaporator arranged on the refrigerating capillary 7 8 structure, the refrigerating branch and the freezing branch merge to the air return pipe 15, and the air return pipe 15 is connected to the inlet of the compressor 1. The arrangement of the freezing dew pipe 2 and the refrigerating dew pipe 3 can defrost the freezing space and the refrigerating space respectively. Wherein, the refrigerator refrigerating system of the present invention is not limited to the above embodiments, for example, the electric valve 6 can be replaced by the valves respectively provided on the refrigerating branch and the freezing branch as the distributing device.

In this embodiment, the control method for the aforementioned refrigerator includes: judging whether the refrigerated space and the variable temperature space need cooling; Open it to refrigerate the refrigerated space and the variable temperature space at the same time; when it is judged that the refrigerated space does not need refrigeration, and the variable temperature space needs refrigeration, the compressor 1, the refrigerated evaporator 10 and the refrigerated fan 13 are operated, and the refrigerated damper 14 is closed, and the temperature variable space Refrigeration. Judging whether the freezing space and the quick-freezing space need refrigeration; when it is judged that the freezing space needs cooling, make the compressor 1, the freezing evaporator 8 and the freezing fan 11 work, and open the freezing damper 12 to cool the freezing space and the quick-freezing space at the same time; determine When the freezing space needs refrigeration, the compressor 1, the freezing evaporator 8 and the freezing fan 11 are made to work, and the freezing damper 12 is closed to refrigerate the freezing space. Certainly, if only refrigerated space is provided and quick-frozen space is not provided with, then can only judge whether refrigerated space needs cooling, control the temperature of refrigerated space by freezing evaporator 8 and refrigerating fan 11 work or not.

In this embodiment, the control method for the aforementioned refrigerator also includes: adjusting the distributing device according to the judging results of judging whether the refrigerating space and the temperature-variable space need refrigeration and judging whether the freezing space and the quick-freezing space need refrigeration, so that the refrigerator works independently in the refrigerating evaporator, freezing The evaporator works alone and switches between two working states. Alternatively, the refrigerator can also be switched between the three states of refrigerating evaporator working alone, refrigerating evaporator working alone, and refrigerating evaporator and freezing evaporator working simultaneously, which can also realize the method of separately controlling the temperature of each refrigerating space in the present invention. Purpose.

In the following, the refrigeration process of the refrigerator will be described in detail by taking the refrigerator switching between the two working states of the refrigerating evaporator working alone and the freezing evaporator working alone as an example.

The refrigerator refrigeration process of the present embodiment is:

1. When the refrigeration space requires refrigeration but the quick-freezing function is not activated, the compressor 1 works, and the refrigerant flows through the compressor 1, the freezing dew pipe 2, the refrigerating dew pipe 3, the condenser 4, the drying filter 5, the electric 6. The freezing capillary 7, the freezing evaporator 8, and the air return pipe 15. At this time, the freezing fan 11 is working, and the freezing damper 12 is opened. At this time, the freezing fan 11 and the compressor 1 are controlled by the freezing sensor arranged in the freezing space, and the freezing space After the temperature reaches the set shutdown point, the refrigeration fan 11 and the compressor 1 stop working.

2. When the freezing space requires refrigeration and the quick-freezing function is activated at the same time, the compressor 1 works, and the refrigerant flows through the compressor 1, the freezing dew pipe 2, the refrigerating dew pipe 3, the condenser 4, the drying filter 5, and the electric motor 6 , the freezing capillary 7, the freezing evaporator 8, and the air return pipe 15. At this time, the freezing fan 11 works, the freezing damper 12 is opened, and the freezing space and the quick-freezing space are refrigerated simultaneously; wherein the freezing sensor controls the freezing damper 12. If the freezing space reaches the temperature, the quick-freezing space Do not reach temperature, then freezing damper 12 is closed, and freezing fan 11 continues to work, and after quick-freezing space also reaches temperature, freezing fan 11 stops working, and compressor 11 stops working.

3. When the refrigerated space requires cooling, the compressor works, and the refrigerant flows through the compressor 1, the freezing dew pipe 2, the refrigerating dew pipe 3, the condenser 4, the drying filter 5, the electric 6, the refrigerating capillary 9, and the refrigerating The evaporator 10 and the air return pipe 15. At this time, the refrigeration fan 13 is working, and the refrigeration damper 14 is opened. At this time, the refrigeration sensor installed in the refrigeration space controls the refrigeration damper 14. If the refrigeration space reaches the temperature, but the variable temperature space does not reach the temperature, the refrigeration damper 14 is closed. , the refrigerating fan 13 continues to work, and when the variable temperature space also reaches the temperature, the refrigerating fan 13 stops working, and the compressor 1 stops working.

In order to ensure the cooling effect of the refrigerated space and avoid the influence of the temperature of the variable temperature space on the refrigerated space, the air circulation mode of the refrigerator in this embodiment is as follows:

1. The air circulation mode of the refrigerated space: when the refrigerated space requires refrigeration, the refrigerated evaporator 10 cools down. At this time, the refrigerated fan 13 works and the refrigerated damper 14 opens. The cold air enters the refrigerated space through the refrigerated damper 14 and the refrigerated air duct 18, and then passes through The return air outlet 23 and the refrigerating return air duct 27 return to the lower part of the refrigerating evaporator 10 .

2. Air circulation mode in the variable temperature space: when the variable temperature space requires cooling, the refrigerating evaporator 10 cools down. At this time, the refrigerating fan 13 works, and the cold air enters the variable temperature space through the variable temperature air duct 19, and then returns to the lower part of the refrigerating evaporator 10 through the variable temperature return air outlet. .

3. Air circulation mode in the refrigerated space: when the refrigerated space requires cooling, the refrigerated evaporator 8 refrigerates. At this time, the refrigerated fan 11 works and the refrigerated damper 12 opens. The refrigerated return air outlet (not shown) in the lower part of the space returns to the lower part of the refrigerated evaporator 8 .

4. The air circulation mode of the quick-freezing space: when the quick-freezing space requires cooling, the refrigerating evaporator 8 is refrigerated. At this time, the freezing fan 11 works, and the cold air enters the quick-freezing space through the quick-freezing air duct 17, and then returns to the lower part of the freezing evaporator 8 through the quick-freezing return air outlet. .

It can be seen from the above description that the above-mentioned embodiments of the present invention have achieved the following technical effects: the refrigeration system of the refrigerator adopts a dual-system design, and evaporators and fans are separately provided for the freezing space and the refrigerating space, so that the freezing space and the variable temperature space The temperature can be controlled separately, and the temperature of the freezing space and the variable temperature space are not affected by each other. In addition, an independent variable temperature space is designed in the lower part of the refrigerated space. The variable temperature space and the refrigerated space are separated by a partition, and the temperature of the variable temperature space and the refrigerated space are not affected by each other. Moreover, the volume of the temperature-changing space in this way can be designed to be very large to meet the volume requirements of users for different temperature compartments in different seasons.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (11)

1. A refrigerator comprising a freezing space, a cold storage space, a variable temperature space, a compressor (1), a condenser (4), a freezing evaporator (8), a refrigeration evaporator (10), a freezing air duct (16) and a refrigeration An air duct (18), the outlet end of the refrigerating air duct (16) communicates with the freezing space, and the outlet end of the refrigerating air duct (18) communicates with the refrigerating space. It is characterized in that the refrigerator also include: A temperature-variable air duct (19) is arranged in parallel with the refrigerating air duct (18), and the outlet end of the variable-temperature air duct (19) communicates with the variable-temperature space; A refrigerating fan (13), arranged between the refrigerating evaporator (10) and the temperature-changing air duct (19) and the refrigerating air duct (18), is used to transfer the refrigerating evaporator (10) to The cold air is blown into the inlet ends of the variable temperature air duct (19) and the refrigerating air duct (18) respectively; The refrigerating damper (14) is arranged at the inlet end of the refrigerating air duct (18). 2. The refrigerator according to claim 1, further comprising: quick freezing space; A quick-freezing air duct (17) is arranged in parallel with the freezing air duct (16), and the outlet end of the quick-freezing air duct (17) communicates with the quick-freezing space; A freezing fan (11), arranged between the freezing evaporator (8) and the quick-freezing air duct (17) and the freezing air duct (16), is used to transfer the air produced by the freezing evaporator (8) to The cold wind is blown into the inlet ends of the quick-freezing air passage (17) and the freezing air passage (16) respectively; The freezing damper (12) is arranged at the inlet end of the freezing air duct (16). 3. The refrigerator according to claim 1 or 2, characterized in that, The refrigerating evaporator (10) and the freezing evaporator (8) are arranged in parallel; The refrigerator also includes a distribution device (6) for distributing the refrigerant from the condenser (4) between the freezing evaporator (8) and the refrigeration evaporator (10) to distribute among them. 4 . The refrigerator according to claim 1 or 2 , characterized in that, the refrigerating space is provided with a refrigerating space air return port, and the temperature variable space is provided with a variable temperature space return air port. 5. The refrigerator according to claim 1 or 2, characterized in that the refrigerator further comprises: The freezing and dew removal pipe (2) is arranged downstream of the compressor (1); The refrigerated dew pipe (3) is arranged downstream of the refrigerated dew pipe (2). 6. The refrigerator according to claim 1 or 2, wherein the variable temperature space is arranged at the lower part of the refrigerating space and is separated from the refrigerating space by a partition. 7 . The refrigerator according to claim 2 , wherein the refrigerator is a side-by-side refrigerator, the refrigerating space is set on the same side as the temperature-variable space, and the freezing space is set on the same side as the quick-freezing space. 8. The refrigerator according to claim 7, characterized in that, The refrigerator includes a refrigerating door (21) for simultaneously opening or closing the refrigerating space and the variable temperature space; or The refrigerator includes a refrigerating space door body for opening or closing the refrigerating space and a variable temperature space door body for opening or closing the variable temperature space. 9. A control method for controlling the refrigerator according to any one of claims 1 to 8, characterized in that the control method comprises: Judging whether the refrigerated space and the variable temperature space of the refrigerator need to be refrigerated; When it is judged that the refrigerated space needs to be refrigerated, the compressor (1), the refrigerating evaporator (10) and the refrigerating fan (13) of the refrigerator are operated, and the refrigerating damper (14) of the refrigerator is opened, and the The refrigerated space and the variable temperature space are refrigerated at the same time; When it is judged that the refrigerated space does not need to be refrigerated and the variable temperature space needs to be refrigerated, the compressor (1), the refrigerated evaporator (10) and the refrigerated fan (13) are operated, and the refrigerated The damper (14) is closed to refrigerate the temperature-changing space. 10. A control method for controlling the refrigerator according to claim 2, characterized in that the control method comprises: Judging whether the refrigerated space and the variable temperature space of the refrigerator need to be refrigerated; When it is judged that the refrigerated space needs to be refrigerated, the compressor (1), the refrigerating evaporator (10) and the refrigerating fan (13) of the refrigerator are operated, and the refrigerating damper (14) of the refrigerator is opened, and the The refrigerated space and the variable temperature space are refrigerated at the same time; When it is judged that the refrigerated space does not need to be refrigerated and the variable temperature space needs to be refrigerated, the compressor (1), the refrigerated evaporator (10) and the refrigerated fan (13) are operated, and the refrigerated The damper (14) is closed to refrigerate the temperature-changing space; Judging whether the freezing space and the quick-freezing space of the refrigerator need refrigeration; When it is judged that the refrigerated space needs to be refrigerated, the compressor (1), the refrigerating evaporator (8) and the refrigerating fan (11) of the refrigerator are made to work, and the refrigerating damper (12) of the refrigerator is opened to The freezing space and the quick freezing space are refrigerated simultaneously; When it is judged that the refrigerating space does not need refrigeration, and the quick-freezing space needs refrigerating, the compressor (1), the refrigerating evaporator (8) and the refrigerating fan (11) are made to work, and the refrigerating damper ( 12) Close, and refrigerate the quick-freezing space. 11. A control method for controlling the refrigerator according to claim 3, characterized in that the control method comprises: Judging whether the refrigerated space and the variable temperature space of the refrigerator need to be refrigerated; When it is judged that the refrigerated space needs to be refrigerated, the compressor (1), the refrigerating evaporator (10) and the refrigerating fan (13) of the refrigerator are operated, and the refrigerating damper (14) of the refrigerator is opened, and the The refrigerated space and the variable temperature space are refrigerated at the same time; When it is judged that the refrigerated space does not need to be refrigerated and the variable temperature space needs to be refrigerated, the compressor (1), the refrigerated evaporator (10) and the refrigerated fan (13) are operated, and the refrigerated The damper (14) is closed to refrigerate the temperature-changing space; Judging whether the freezing space and the quick-freezing space of the refrigerator need refrigeration; When it is judged that the refrigerated space needs to be refrigerated, the compressor (1), the refrigerating evaporator (8) and the refrigerating fan (11) of the refrigerator are made to work, and the refrigerating damper (12) of the refrigerator is opened to The freezing space and the quick freezing space are refrigerated simultaneously; When it is judged that the refrigerating space does not need refrigeration, and the quick-freezing space needs refrigerating, the compressor (1), the refrigerating evaporator (8) and the refrigerating fan (11) are made to work, and the refrigerating damper ( 12) close, and refrigerate the quick-freezing space; The control method also includes: Adjust the distributing device (6) of the refrigerator according to the judging results of judging whether the refrigerating space and the variable temperature space need refrigeration and judging whether the freezing space and the quick-freezing space need refrigeration, so that the refrigerator is in the refrigerating evaporator switch between working alone and refrigerated evaporator working alone; or Adjust the distributing device (6) of the refrigerator according to the judging results of judging whether the refrigerating space and the variable temperature space need refrigeration and judging whether the freezing space and the quick-freezing space need refrigeration, so that the refrigerator is in the refrigerating evaporator Switch among three states: working alone, refrigerating evaporator working alone, and refrigerating evaporator and refrigerating evaporator working simultaneously.

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