CN116576607A

CN116576607A - Refrigerator and refrigeration control method

Info

Publication number: CN116576607A
Application number: CN202310524031.6A
Authority: CN
Inventors: 芦小飞; 姚达; 吕伟; 徐磊
Original assignee: Qingdao Haier Special Refrigerator Co Ltd; Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Special Refrigerator Co Ltd; Qingdao Haier Smart Technology R&D Co Ltd; Haier Smart Home Co Ltd
Priority date: 2023-05-10
Filing date: 2023-05-10
Publication date: 2023-08-11

Abstract

The invention particularly relates to a refrigerator and a refrigeration control method. The refrigerator comprises a refrigerator body and a refrigerating system arranged in the refrigerator body, wherein the refrigerator body defines a refrigerating storage compartment, the refrigerating system comprises a compressor, a condenser, a refrigerating capillary tube and a refrigerating loop of a refrigerating evaporator which are connected through pipelines, and the refrigerator body defines a refrigerating storage compartment which is independently arranged with the refrigerating storage compartment in the horizontal direction; the refrigerating system further comprises a refrigerating and cooling branch which is arranged in parallel with a connecting pipeline formed by the refrigerating capillary tube and the refrigerating evaporator, and the cabinet body further comprises a variable-temperature storage compartment which is arranged below the refrigerating storage compartment and is provided with an opening facing to the side face, and an air supply device which is arranged in the cabinet body; the air supply device comprises an air duct, and the air duct is provided with a first air inlet, a second air inlet, an air outlet and a fan. The invention can reduce the starting frequency of the compressor, and has the advantages of fine refrigeration, on-demand refrigeration, energy conservation and high efficiency.

Description

Refrigerator and refrigeration control method

Technical Field

The invention relates to the technical field of refrigeration, in particular to a refrigerator and a refrigeration control method.

Background

At present, the door body of the horizontal refrigerator adopts a top-opening door, the box body is deeper, the bottom article taking is very difficult, especially, a person with shorter weight is taken and put the bottom article to have the risk of falling into, and the storage cavity of the horizontal refrigerator can cause a narrow space at the bottom in the area close to the compressor bin, so that the article taking is very difficult. Therefore, it is necessary to study a refrigerator and a refrigeration control method to solve the above problems.

Disclosure of Invention

The invention aims to provide a refrigerator with fine refrigeration, on-demand refrigeration, energy conservation, high efficiency and better refrigeration effect.

In order to achieve the above object, an embodiment of the present invention provides a refrigerator, including a cabinet body, a refrigeration system disposed in the cabinet body, the cabinet body defining a refrigerated storage compartment, the refrigeration system including a compressor, a condenser, a refrigeration capillary tube, a refrigeration loop of a refrigeration evaporator connected by a pipeline, the refrigeration evaporator being used for providing refrigeration to the refrigerated storage compartment, the cabinet body defining a refrigerated storage compartment disposed independently of the refrigerated storage compartment in a horizontal direction;

the refrigerating system further comprises a refrigeration and cooling branch which is connected with the freezing capillary tube and the connecting pipeline formed by the freezing evaporator in parallel, and the refrigeration and cooling branch is used for providing cold energy for the refrigeration storage compartment;

The cabinet body further comprises a temperature-changing storage compartment which is arranged below the freezing storage compartment and provided with an opening facing to the side face, and an air supply device which is arranged in the cabinet body;

the air supply device comprises an air duct, wherein the air duct is provided with a first air inlet communicated with the freezing storage compartment, a second air inlet communicated with the refrigerating storage compartment, an air outlet communicated with the first air inlet and the second air inlet, and a fan for respectively guiding the air flow of the first air inlet and the second air inlet to the temperature-changing storage compartment through the air outlet;

the air supply device further comprises a refrigeration air door for controllably switching on or off the air flow between the first air inlet and the air outlet, and a refrigeration air door for controllably switching on or off the air flow between the second air inlet and the air outlet.

As a further improvement of an embodiment of the present invention, the freezing storage compartment and the refrigerating storage compartment are adjacently arranged in a horizontal direction, and the air duct is arranged between the freezing storage compartment and the refrigerating storage compartment;

the air duct comprises a main air duct which extends upwards from the air outlet, a first branch air duct which extends towards the direction of the freezing storage compartment and is communicated with the first air inlet, and a second branch air duct which extends towards the direction of the freezing storage compartment and is communicated with the second air inlet;

Wherein, the main air duct is communicated with the air outlet and the variable-temperature storage compartment.

As a further improvement of an embodiment of the present invention, the refrigeration and cold supply branch comprises a refrigeration capillary and a refrigeration evaporator which are connected by a pipeline;

the inlet end of the refrigeration capillary tube and the inlet end of the freezing capillary tube are connected in parallel with the outlet end of the condenser; the outlet end of the refrigeration evaporator and the outlet end of the freezing evaporator are connected in parallel with the inlet end of the compressor;

the refrigeration system also comprises a first three-way valve connected to the outlet end of the condenser, wherein the first three-way valve is provided with an inlet and two outlets;

an inlet of the first three-way valve is connected with an outlet end of the condenser, and two outlets of the first three-way valve are respectively connected with an inlet end of the refrigeration capillary tube and an inlet end of the freezing capillary tube;

the refrigeration system further comprises a second three-way valve connected to the inlet end of the compressor, wherein the second three-way valve is provided with two inlets and one outlet;

two inlets of the second three-way valve are respectively connected with the outlet end of the refrigeration evaporator and the outlet end of the freezing evaporator, and one outlet of the second three-way valve is connected with the inlet end of the compressor.

As a further improvement of an embodiment of the present invention, the refrigeration system further includes an auxiliary condenser selectively connected between the compressor and the condenser;

the cabinet body comprises a temperature-changing inner container used for forming the temperature-changing storage compartment, and the auxiliary condenser is arranged on the temperature-changing inner container.

As a further improvement of an embodiment of the present invention, the refrigeration system further includes a third three-way valve connected to the outlet end of the compressor, a fourth three-way valve connected to the outlet end of the auxiliary condenser;

the third three-way valve is provided with an inlet and two outlets, and the fourth three-way valve is provided with two inlets and one outlet;

an inlet of the third three-way valve is connected with an outlet end of the compressor, and two outlets of the third three-way valve are respectively connected with an inlet end of the auxiliary condenser and the fourth three-way valve;

two inlets of the fourth three-way valve are respectively connected with the inlet end of the auxiliary condenser and one outlet of the third three-way valve, and one outlet of the fourth three-way valve is connected with the inlet end of the condenser.

As a further improvement of an embodiment of the invention, the freezing storage compartment and the refrigerating storage compartment are respectively arranged to extend downwards from the top of the cabinet body;

The temperature-changing storage compartment is arranged at the bottom of the cabinet body;

the bottom of the cabinet body is also provided with a compressor bin which is arranged adjacent to the variable-temperature storage compartment in the horizontal direction.

As a further improvement of an embodiment of the present invention, the openings of the freezing storage compartment and the refrigerating storage compartment are respectively arranged upwards;

the door bodies of the freezing storage compartment and the refrigerating storage compartment are respectively provided with a top-opening door body;

the door body of the temperature-changing storage compartment is arranged on the side wall of the cabinet body or the refrigerator comprises a drawer which can be pulled out along the horizontal direction to be accommodated in the temperature-changing storage compartment.

As a further improvement of one embodiment of the invention, the refrigerator further comprises a freezing air return channel communicated with the freezing storage compartment and the variable-temperature storage compartment and a refrigerating air return channel communicated with the refrigerating storage compartment and the variable-temperature storage compartment.

In order to solve the problems, the invention also provides a refrigeration control method.

A refrigeration control method of a refrigerator as described above, comprising,

acquiring the temperature B in the temperature-changing storage room _SNR Setting temperature B in temperature-changing storage room _SET When B is acquired _SNR Is higher than the startup temperature B in the temperature-changing storage room _ON And B is _SET Satisfy B _SET When not less than 0, setting and opening a refrigeration air door, wherein B _ON Defined as at B _SET On the basis of the temperature change storage compartment preset starting temperature threshold T _{Power-on threshold 1} ，B _ON ＝B _SET +T _{Power-on threshold 1} ；

When B is acquired _SNR Higher than B _ON And B is _SET Satisfy B _SET When the temperature is less than 0, setting and opening a freezing air door;

after opening the refrigerating air door or the freezing air door, the temperature B in the temperature-changing storage room _SNR Reaching the shutdown temperature B in the temperature-changing storage room _OFF Closing a refrigeration damper, or closing a freezing damper, wherein B _OFF Defined as at B _SET Subtracting a shutdown temperature threshold T preset in the variable-temperature storage compartment on the basis of _{Shutdown threshold 1} ，B _OFF ＝B _SET －T _{Shutdown thresholdValue 1} 。

As a further improvement of an embodiment of the present invention, when F is obtained _SNR Higher than the freezing start-up temperature F of the freezing storage compartment _ON At the same time, obtain B _SNR Higher than B _ON And B is _SET Satisfy B _SET When the temperature is more than or equal to 0, the compressor is turned on, and the temperature R in the refrigerating storage room is obtained _SNR And wherein the freeze start-up temperature F _ON Defined as the set temperature F in the refrigerated storage compartment _SET On the basis of (1) adding a preset starting-up temperature threshold T _{Power-on threshold 2} ，F _ON ＝F _SET +T _{Power-on threshold 2} ；

When R is _SNR Lower than shutdown temperature R of refrigerating storage compartment _OFF When the refrigerating air door is opened, obtain B _SNR When B _SNR Reach B _OFF Closing the refrigeration damper, wherein R _OFF Defined as the set temperature R in the refrigerated storage compartment _SET Subtracting a preset shutdown temperature threshold T of the refrigerating storage compartment _{Shutdown threshold 3} ，R _OFF ＝R _SET －T _{Shutdown threshold 3} ；

When R is _SNR Higher than R _OFF When it is needed to wait until F _SNR Reaching the shutdown temperature F in the freezing storage room _OFF When in use, the refrigeration and cold supply branch is switched and connected between the condenser and the compressor, and the refrigeration air door is opened to obtain B _SNR The method comprises the steps of carrying out a first treatment on the surface of the When B is _SNR Reach B _OFF Closing the refrigeration air door to obtain R _SNR The method comprises the steps of carrying out a first treatment on the surface of the When R is _SNR Reaching R _OFF When the compressor is closed;

wherein F is _OFF Defined as at F _SET Subtracting a preset shutdown temperature threshold T of the frozen storage compartment _{Shutdown threshold 2} ，F _OFF ＝F _SET －T _{Shutdown threshold 2} 。

As a further improvement of an embodiment of the present invention, when F is obtained _SNR Higher than F _ON At the same time, obtain B _SNR Higher than B _ON And B is _SET Satisfy B _SET When the temperature is less than 0, starting the compressor, communicating the cooling loop and opening the refrigeration air door to obtain B _SNR When B _SNR Reach B _OFF Closing the freezing air door when the air conditioner is in operation;

when the freezing air door is closed, F is obtained _SNR When F _SNR Reach F _OFF At the time, R is obtained _SNR ；

When R is acquired _SNR Higher than R _OFF When the refrigerating and cooling branch is switched and connected between the condenser and the compressor, R is obtained _SNR ；

When R is _SNR Below R _OFF When the compressor is turned off.

As a further improvement of an embodiment of the present invention, when F is obtained _SNR Below F _ON 、R _SNR Is lower than the cold storage starting temperature R _ON 、B _SNR Higher than B _ON And B is _SET Satisfy B _SET When the temperature is more than or equal to 0, opening a refrigeration air door until B _SNR Reach B _OFF Closing the refrigeration damper, wherein R _ON Defined as the set temperature R in the refrigerated storage compartment _SET On the basis of (1) adding a preset starting-up temperature threshold T _{Power-on threshold 3} ，R _ON ＝R _SET +T _{Power-on threshold 3} ；

After opening the refrigeration damper, when the refrigeration R is obtained _SNR Higher than the cold storage starting temperature R _ON When the compressor is turned on, the refrigerating and cooling branch is switched between the condenser and the compressor until R _SNR Reaching R _OFF At the time, F is acquired _SNR ；

When F is acquired _SNR Higher than F _OFF In this case, the freezing capillary tube and the freezing evaporator are switched between the condenser and the compressor until F _SNR Below F _OFF ；

When F is acquired _SNR Below F _OFF When the compressor is turned off.

As a further improvement of an embodiment of the present invention, when F is obtained _SNR Below F _ON 、R _SNR Higher than R _ON When the compressor is started, the refrigerating and cooling branch is switched and connected between the condenser and the compressor, and B is obtained _SNR ；

When B is _SNR Higher than B _ON And B is _SET Satisfy B _SET When the temperature is more than or equal to 0, opening a refrigeration air door until B _SNR Reach B _OFF Closing the refrigeration air door;

when B is _SNR Higher than B _ON And B is _SET Satisfy B _SET When less than 0, wait until R _SNR Reaching R _OFF Then switching the freezing capillary tube and the freezing evaporator between the condenser and the compressor, opening the freezing air door to obtain B _SNR When B _SNR Reach B _OFF Closing the freezing air door to obtain F _SNR When F _SNR Reach F _OFF When the compressor is turned off. .

Compared with the prior art, the invention has the beneficial effects that: according to the refrigerator and the refrigeration control method, the temperature-changing storage compartment with the opening facing the side face is arranged below the freezing storage compartment, so that the refrigerator at least comprises the freezing storage compartment and the temperature-changing storage compartment in the vertical direction, the technical problem that the top door of the refrigerator is inconvenient to take and place articles at the bottom of the refrigerator is solved, and the refrigerator has the advantage of convenience in taking and placing articles. And cool air in the freezing storage compartment and the refrigerating storage compartment is guided to the temperature-changing storage compartment through the air delivery duct by the fans respectively, so that the temperature-changing storage compartment is refrigerated and frozen, new refrigerating components are not needed, and the setting of a refrigerating system is simplified. The arrangement of the freezing air door and the refrigerating air door can ensure that the temperature-changing storage compartment is switched and communicated with the freezing storage compartment and the refrigerating storage compartment, and the refrigerating air door is used for conveying cold energy for the temperature-changing storage compartment on the premise of not influencing the refrigerating effect of the refrigerating storage compartment and the refrigerating storage compartment. The temperature reduction device has the advantages that when the refrigeration requirement of the variable-temperature storage compartment is refrigeration, the temperature reduction speed is too high, local refrigeration food materials are easily frozen out due to the fact that the wind temperature blown into the variable-temperature storage compartment is too low, the starting frequency of a compressor can be reduced, and the device has the advantages of fine refrigeration, on-demand refrigeration, energy conservation, high efficiency and better refrigeration effect.

Drawings

Fig. 1 is a schematic structural diagram of a refrigerator according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a refrigeration system of a refrigerator according to an embodiment of the present invention;

fig. 3 is a flowchart of initial power-up of a refrigerator according to an embodiment of the present invention;

FIG. 4 is a flow chart of a refrigerating compartment of a refrigerator according to an embodiment of the present invention to cause a compressor to start;

FIG. 5 is a flow chart of a refrigeration compartment of a refrigerator according to an embodiment of the present invention causing a compressor to start;

fig. 6 is a schematic structural diagram of a refrigerator according to a second embodiment of the present invention;

fig. 7 is a schematic diagram of the structural components of a refrigeration system of a refrigerator according to a second embodiment of the present invention;

fig. 8 is a flowchart of a control method of a refrigerator according to a second embodiment of the present invention.

In the figure: 11. a cabinet body; 12. a top-opening door body; 21. a compressor; 22. a condenser; 23. freezing the capillary tube; 24. a freezing evaporator; 25. refrigerating the capillary tube; 26. a refrigerated evaporator; 27. drying the filter; 28. a first three-way valve; 29. a second three-way valve; 31. freezing the storage compartment; 32. a refrigerated storage compartment; 33. a variable-temperature storage compartment; 34. a compressor bin; 61. a first air dividing duct; 611. a first air inlet; 62. a second air-dividing duct; 621. a second air inlet; 63. a main air duct; 631. an air outlet; 64. a blower; 65. a freezing air door; 67. a refrigerating air door; 71. an auxiliary condenser; 72. a third three-way valve; 73. a fourth three-way valve; 81. freezing the air return duct; 82. refrigerating the air return duct; 83. a freezing return air door; 84. and a refrigerating return air door.

Detailed Description

The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present application can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present application.

The terms "comprising" and "having" and any variations thereof herein are intended to cover a non-exclusive inclusion. Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In this embodiment, when the user is defined to use the refrigerator, the side facing the user is defined as the front.

Fig. 1 to 5 show a first embodiment of the application.

Referring to fig. 1, the present application mainly relates to: a refrigerator comprises a refrigerator body 11 and a refrigerating system arranged in the refrigerator body 11. The cabinet 11 includes a housing, an inner container disposed in the housing, and an insulation layer disposed between the housing and the inner container.

The cabinet 11 defines a refrigerated storage compartment 31 therein, and in particular the liner comprises a refrigerated liner defining the refrigerated storage compartment 31.

The opening of the freezing storage compartment 31 is upwardly arranged, and the refrigerator includes a top-opening cover type door body for opening or closing the freezing storage compartment 31. It will be appreciated that the opening of the refrigerated storage compartment 31 may also be provided towards the side, which refers to the front-rear, left-right direction.

As shown in fig. 2, the refrigeration system includes a compressor 21, a condenser 22, a freezing capillary tube 23, and a cooling circuit of a freezing evaporator 24 connected by piping. The refrigerant is sequentially led from the compressor 21 to the condenser 22, the freezing capillary tube 23, and the freezing evaporator 24, and is returned to the compressor 21, thereby forming a refrigeration cycle. The freezing evaporator 24 is used to provide cooling to the freezing compartment 31.

Further, a refrigerating compartment 32 is defined in the cabinet 11, which is provided separately from the refrigerating compartment 31 in a horizontal direction. Preferably, the refrigerated storage compartment 32 is disposed adjacent to the refrigerated storage compartment 31 in the horizontal direction.

The refrigeration system also comprises a refrigeration and cold supply branch which is formed by connecting a freezing capillary tube 23 and a freezing evaporator 24 in parallel. The refrigeration and cold supply branch comprises a refrigeration capillary 25 and a refrigeration evaporator which are connected through pipelines. Wherein the refrigerated evaporator is used to provide cooling to the refrigerated storage compartment 32. When refrigeration is required in the refrigerated storage compartment 32, the refrigerant is sequentially led from the compressor 21 to the condenser 22, the refrigerated capillary tube 25, the refrigerated evaporator, and returned to the compressor 21 to form a refrigeration cycle.

The connection line between the freezing capillary 23 and the freezing evaporator 24 and the refrigerating and cooling branch line are switchably connected between the condenser 22 and the compressor 21.

The cabinet 11 further includes a temperature change storage compartment 33 provided below the freezing storage compartment 31 and having an opening facing the side, and an air blowing device provided in the cabinet 11. The variable-temperature storage compartment 33 takes and places articles through the opening of the variable-temperature storage compartment 33.

The temperature-changing storage compartment 33 and the freezing storage compartment 31 are adjacently arranged in the vertical direction, so that the cabinet 11 at least comprises the freezing storage compartment 31 and the temperature-changing storage compartment 33 in the vertical direction. The articles at the bottom of the cabinet 11 can be taken or put or taken through the temperature-changing storage compartment 33, and the advantage of convenient taking is achieved.

The air supply device comprises an air duct, wherein the air duct is provided with a first air inlet 611 communicated with the freezing storage compartment 31, a second air inlet 621 communicated with the refrigerating storage compartment 32, an air outlet 631 communicated with the first air inlet 611 and the second air inlet 621, and a fan 64 for respectively guiding air flow of the air inlet and the second air inlet 621 to the temperature-changing storage compartment 33 through the air outlet 631.

The cold air in the freezing compartment 31 enters the temperature-changing compartment 33 through the first air inlet 611 and the air outlet 631. The cool air in the refrigerating compartment 32 enters the temperature changing compartment 33 through the second air inlet 621 and the air outlet 631. So that the temperature-changing storage compartments 33 can be refrigerated and cooled respectively.

The fan 64 respectively guides the cool air in the freezing storage compartment 31 and the refrigerating storage compartment 32 to the variable-temperature storage compartment 33 through the air delivery duct, so that the variable-temperature storage compartment 33 is refrigerated and frozen, new refrigerating components are not needed, and the setting of a refrigerating system is simplified.

In the first embodiment of the arrangement of fans 64 in the duct, one fan 64 is provided, and the fan 64 is arranged close to the air outlet 631.

In the second embodiment, two fans 64 are disposed in the air duct, and one fan 64 is disposed in each of the first air inlet 611 and the second air inlet 621.

The fan 64 drives the cool air in the freezing storage compartment 31 to enter the temperature-changing storage compartment 33 through the first air inlet 611 and the air outlet 631, and the cool air in the refrigerating storage compartment 32 enters the temperature-changing storage compartment 33 through the second air inlet 621 and the air outlet 631. The fan 64 provides power to the air duct to force the airflow.

The air supply device further comprises a freezing air door 65 for controllably switching on or off the air flow between the first air inlet 611 and the air outlet 631, and a refrigerating air door 67 for controllably switching on or off the air flow between the second air inlet 621 and the air outlet 631.

The setting of freezing air door 65 and refrigeration air door 67 can make the alternating temperature storing room 33 switch the freezing storing room 31 of intercommunication, the cold-stored storing room 32, avoid when the refrigeration demand of alternating temperature storing room 33 is refrigeration, the cooling rate is too fast, blow in the wind temperature of alternating temperature storing room 33 too low and cause the partial cold-stored food material to be frozen out easily, and can reduce compressor 21 start-up frequency, have the advantage that the refrigeration is refined, refrigerate on demand, energy-conservation high efficiency, refrigeration effect is better.

Preferably, the air supply device further comprises a fan housing respectively arranged at the first air inlet 611 and the second air inlet 621. The refrigeration damper 65 is disposed at the first air inlet 611, and the refrigeration damper 67 is disposed at the second air inlet 621.

The liner includes a freezing liner defining a freezing compartment 31.

One way to provide refrigeration to the refrigerated storage compartment 31 is to secure the refrigeration evaporator 24 to the outer wall of the refrigeration liner and provide refrigeration to the refrigerated storage compartment 31 by direct cooling.

Another way to provide cooling to the refrigerated storage compartment 31 is for the refrigerator to include a refrigeration blower unit that provides cooling to the refrigerated storage compartment 31. The freezing air supply unit includes a freezing air duct communicating with the freezing storage compartment 31, and a freezing air supply fan 64 provided in the freezing air duct. The freezing evaporator 24 is disposed in the freezing air duct, and the freezing air supply fan 64 is disposed near the freezing evaporator 24, and provides cooling capacity for the freezing storage compartment 31 by air cooling.

Further, the liner includes a refrigerated liner defining a refrigerated storage compartment 32.

In one embodiment for providing cooling to the refrigerated storage compartment 32, a refrigeration evaporator is secured to the outer wall of the refrigeration liner to provide cooling to the refrigerated storage compartment 32 by direct cooling.

Another way to provide cooling to the refrigerated storage compartment 32 is for the refrigerator to include a refrigerated air supply unit that provides cooling to the refrigerated storage compartment 32. The refrigeration and air supply unit comprises a refrigeration air duct communicated with the refrigeration storage compartment 32 and a refrigeration and air supply fan 64 arranged in the refrigeration air duct. The refrigerated evaporator is disposed in the refrigerated air duct, and a refrigerated air supply fan 64 is disposed adjacent to the refrigerated evaporator for providing cooling to the refrigerated storage compartment 32 by air-cooled refrigeration.

Further, the refrigerator further comprises a freezing air return channel which is communicated with the freezing storage compartment 31 and the temperature-changing storage compartment 33.

The freezing return air duct comprises a return air opposite port which is respectively communicated with the freezing storage compartment 31 and the variable-temperature storage compartment 33. The cold air in the freezing storage compartment 31 enters the temperature-changing storage compartment 33 for refrigeration through the air delivery channel under the drive of the fan 64, and then returns to the freezing storage compartment 31 through the air return channel to complete the circulation of air flow, so that the cold energy of the freezing storage compartment 31 is conveyed to the temperature-changing storage compartment 33.

Further, the refrigerator further comprises a refrigerating air return channel which is communicated with the refrigerating storage compartment 32 and the temperature changing storage compartment 33.

The refrigerating return air duct comprises return air opposite interfaces which are respectively communicated with the refrigerating storage compartment 32 and the temperature changing storage compartment 33. The cool air in the refrigerating storage compartment 32 enters the temperature-changing storage compartment 33 for refrigeration by the air delivery channel under the drive of the fan 64, and then returns to the refrigerating storage compartment 32 by the air return channel to complete the circulation of air flow, so that the cool air in the refrigerating storage compartment 32 is conveyed to the temperature-changing storage compartment 33.

Further, the refrigerator further comprises a freezing return air door which can controllably conduct or close the freezing return air duct. The cold air of the temperature-changing storage compartment 33 is prevented from flowing back into the freezing storage compartment 31 through the air return channel, and the refrigerating effect of the freezing storage compartment 31 is prevented from being influenced.

Further, the refrigerator further comprises a refrigeration return air door which can controllably conduct or close the refrigeration return air duct. The cold air in the temperature-changing storage compartment 33 is prevented from flowing back into the refrigerating storage compartment 32 through the air return channel, and the refrigerating effect of the refrigerating storage compartment 32 is prevented from being affected.

Further, the freezing storage compartment 31 and the refrigerating storage compartment 32 are adjacently disposed in the horizontal direction, and the air duct is disposed between the freezing storage compartment 31 and the refrigerating storage compartment 32.

The air duct comprises a main air duct 63 extending upwards from an air outlet 631, a first branch air duct 61 extending towards the direction of the freezing storage compartment 31 and communicated with the first air inlet 611, and a second branch air duct 62 extending towards the direction of the freezing storage compartment 32 and communicated with the second air inlet 621. The main duct 63 communicates with the first and second branch ducts 61, 62, respectively.

Wherein the main air duct 63 communicates with the air outlet 631 and the temperature changing storage compartment 33.

The cold air in the freezing compartment 31 enters the temperature-changing compartment 33 through the first air inlet 611, the first air-dividing duct 61, the main air duct 63, and the air outlet 631. So that the temperature change storage compartment 33 can be refrigerated.

The cold air in the refrigerating compartment 32 enters the temperature changing compartment 33 through the second air inlet 621, the second air distribution duct 62, the main air duct 63 and the air outlet 631. So that the temperature change storage compartment 33 can be refrigerated.

Further, the refrigeration cooling branch comprises a refrigeration capillary 25 and a refrigeration evaporator 26 which are connected through pipelines.

An inlet end of the refrigeration capillary 25 and an inlet end of the freezing capillary 23 are connected in parallel with an outlet end of the condenser 22; the outlet end of the refrigeration evaporator 26 is connected in parallel with the outlet end of the freezing evaporator 24 to the inlet end of the compressor 21.

The refrigeration system also includes a first three-way valve 28 connected to the outlet end of the condenser 22, the first three-way valve 28 having an inlet and two outlets.

An inlet of the first three-way valve 28 is connected with an outlet end of the condenser 22, and two outlets of the first three-way valve 28 are respectively connected with an inlet end of the refrigeration capillary 25 and an inlet end of the freezing capillary 23. Through the arrangement of the first three-way valve 28, the inlet end of the refrigeration capillary 25 and the inlet end of the freezing capillary 23 are respectively connected with the outlet end of the condenser 22 in a switching way, and the advantages of convenience in switching and easiness in control are achieved.

The refrigeration system further includes a second three-way valve 29 connected to the inlet end of the compressor 21, the second three-way valve 29 having two inlets and one outlet.

Two inlets of the second three-way valve 29 are respectively connected to the outlet end of the refrigeration evaporator 26 and the outlet end of the freezing evaporator 24, and one outlet of the second three-way valve 29 is connected to the inlet end of the compressor 21. By the arrangement of the second three-way valve 29, the inlet end of the compressor 21 is respectively connected with the outlet end of the refrigeration evaporator 26 and the outlet end of the freezing evaporator 24 in a switching way, and the advantages of convenience in switching and easiness in control are achieved.

Further, the refrigeration system also includes a dry filter coupled between the condenser 22 and the first three-way valve 28.

Further, the freezing storage compartment 31 and the refrigerating storage compartment 32 are respectively extended downwards from the top of the cabinet 11. The freezing compartment 31 and the refrigerating compartment 32 are disposed adjacently in the horizontal direction. Preferably, the refrigerated storage compartment 31 is arranged flush with the bottom of the refrigerated storage compartment 32.

The freezing storage compartment 31 and the temperature change storage compartment 33 are disposed adjacently in the vertical direction.

The temperature-changing storage compartment 33 is provided at the bottom of the cabinet 11. The bottom of the cabinet 11 is also provided with a compressor bin 34 arranged adjacent to the temperature-changing storage compartment 33 in the horizontal direction. The compressor 21 is disposed within the compressor compartment 34. The temperature-changing storage compartment 33 is arranged flush with the top of the compressor compartment 34, so that the temperature-changing storage compartment 33 can be arranged in the space below the freezing storage compartment 31 and the refrigerating storage compartment 32 except the compressor compartment 34. The space in the cabinet 11 is fully utilized, and the spaces of the freezing storage compartment 31, the refrigerating storage compartment 32 and the temperature-changing storage compartment 33 are all relatively square without narrow corner spaces.

Further, the openings of the freezing storage compartment 31 and the refrigerating storage compartment 32 are respectively provided upward. The door bodies of the freezing storage compartment 31 and the refrigerating storage compartment 32 are respectively set as top-opening door bodies.

In one embodiment of the temperature-changing storage compartment 33, the door of the temperature-changing storage compartment 33 is disposed on the side wall of the cabinet 11, since the temperature-changing storage compartment 33 is open to the side.

In another embodiment of the temperature change compartment 33, the refrigerator includes a drawer that is removably received in the temperature change compartment 33 in a horizontal direction. The function of storing is realized through the drawer.

Further, the refrigerator further comprises temperature sensors respectively arranged in the freezing storage compartment 31, the refrigerating storage compartment 32 and the temperature changing storage compartment 33, and used for respectively detecting the temperatures in the freezing storage compartment 31, the refrigerating storage compartment 32 and the temperature changing storage compartment 33.

In order to solve the above problems, the invention also provides a refrigeration control method of the refrigerator as described above with reference to fig. 3 to 5.

A refrigeration control method comprising:

when the initial power-on signal of the refrigerator is obtained, the initial power-on signal means that the unpowered time of the refrigerator exceeds the preset time t _{Powering up} ，t _{Powering up} When the non-electrifying time of the refrigerator exceeds 1h, the compressor 21 is started, all refrigeration components of the refrigeration system are communicated, the air door is opened, when the refrigerating storage compartment 32 reaches the stop point temperature, the refrigerating and cooling branch is disconnected from the refrigeration loop, the temperatures of the refrigerating storage compartment 31 and the variable-temperature storage compartment 33 respectively reach the stop point temperature, the compressor 21 is closed, the refrigerating capillary tube 23 and the refrigerating evaporator 24 are connected between the compressor 21 and the condenser 22, and the refrigerator is set to enter a compressor 21 on-off mode.

Turning on the compressor 21 refers herein to putting the compressor 21 in a start-up state.

A refrigeration control method comprising:

acquiring temperature B in temperature-changing storage compartment 33 _SNR Set temperature B in temperature-changing storage compartment 33 _SET When B is acquired _SNR Higher than the starting-up temperature B in the temperature-changing storage compartment 33 _ON And B is _SET Satisfy B _SET When not less than 0, the refrigerating damper 67 is set to be opened, wherein B _ON Defined as at B _SET On the basis of the preset starting temperature threshold T of the variable-temperature storage compartment 33 _{Power-on threshold 1} ，B _ON ＝B _SET +T _{Power-on threshold 1} ；

When B is acquired _SNR Higher than B _ON And B is _SET Satisfy B _SET When less than 0, the freezing air door 65 is set to be opened;

after opening the refrigeration damper 67, or opening the freezer damper 65, the temperature B in the temperature change compartment 33 _SNR Reaching shutdown temperature B in the temperature-changing storage compartment 33 _OFF Closing the refrigeration damper 67, or closing the freezer damper 65, wherein B _OFF Defined as at B _SET Subtracting a shutdown temperature threshold T preset in the variable-temperature storage compartment 33 on the basis of _{Shutdown threshold 1} ，B _OFF ＝B _SET －T _{Shutdown threshold 1} 。

Specifically, the temperature sensor in the temperature change storage compartment 33 requiring refrigeration in the temperature change storage compartment 33 detects B _SNR ≥B _ON 。

When the refrigerator enters the compressor 21 on-off mode, when B _SET And when the temperature is not less than 0, at the moment, the refrigerating mode in the temperature-changing storage compartment 33 is a refrigerating mode, and the refrigerating air door 67 is required to be opened, so that the cold in the refrigerating storage compartment 32 is conveyed into the temperature-changing storage compartment 33, and the refrigerating requirement in the temperature-changing storage compartment 33 is met. By opening the refrigeration damper 67, the temperature of the air blown into the variable temperature storage compartment 33 is prevented from being too low, and the local refrigerated food is not easily frozen.

It can be understood that when the refrigerator is in the initial power-on state, the compressor 21 can be opened, the refrigerating air door 67 can be opened, so that the cold energy in the refrigerating storage compartment 32 can be conveyed into the temperature-changing storage compartment 33, and the refrigerating requirement in the temperature-changing storage compartment 33 can be met.

When B is _SET When the temperature is less than 0, the refrigerating mode in the temperature-changing storage compartment 33 is a freezing mode, and the compressor needs to be started at the moment21. The refrigerant is led from the compressor 21 to the condenser 22, the freezing capillary tube 23, and the freezing evaporator 24 in this order, and is returned to the compressor 21 to form a freezing refrigeration cycle. If the damper is opened only, the cooling capacity in the freezing compartment 31 may not meet the requirement of the cooling capacity in the temperature-changing compartment 33, and the rapid temperature rise in the freezing compartment 31 may be caused, which affects the cooling effect in the freezing compartment 31. Thus, when B _SET When < 0, the compressor 21 must be turned on.

Further, when F is acquired _SNR Higher than the freezing start-up temperature F of the freezing storage compartment 31 _ON At the same time, obtain B _SNR Higher than B _ON And B is _SET Satisfy B _SET When not less than 0, the compressor 21 is turned on and the temperature R in the refrigerating compartment 32 is obtained _SNR And wherein the freeze start-up temperature F _ON Defined as the set temperature F in the refrigerated storage compartment 31 _SET On the basis of (1) adding a preset starting-up temperature threshold T _{Power-on threshold 2} ，F _ON ＝F _SET +T _{Power-on threshold 2} ；

When R is _SNR Lower than the shutdown temperature R of the refrigerated storage compartment 32 _OFF At the time of opening the refrigeration damper 67, obtain B _SNR When B _SNR Reach B _OFF Closing the refrigeration damper 67, wherein R _OFF Defined as the set temperature R in the refrigerated storage compartment 32 _SET Subtracting a preset shutdown temperature threshold T of the refrigerated storage compartment 32 _{Shutdown threshold 3} ，R _OFF ＝R _SET －T _{Shutdown threshold 3} ；

When R is _SNR Higher than R _OFF When it is needed to wait until F _SNR Reaching the shutdown temperature F of the refrigerated storage compartment 31 _OFF When the refrigerating and cooling branch is switched and connected between the condenser 22 and the compressor 21, the refrigerating air door 67 is opened to obtain B _SNR The method comprises the steps of carrying out a first treatment on the surface of the When B is _SNR Reach B _OFF Closing the refrigeration damper 67 to obtain R _SNR The method comprises the steps of carrying out a first treatment on the surface of the When R is _SNR Reaching R _OFF When the compressor 21 is turned off;

wherein F is _OFF Defined as at F _SET Subtracting the frozen stock on the basis of (a)Shutdown temperature threshold T preset in the chamber 31 _{Shutdown threshold 2} ，F _OFF ＝F _SET －T _{Shutdown threshold 2} 。

Specifically, when F _SNR ≥F _ON When the freezing storage compartment 31 reaches the starting point, the machine is started, B _SET For the cooling mode, the cooling damper 67 needs to be opened, but in order not to affect the cooling effect of the cooling storage compartment 32. According to the temperature R in the refrigerating compartment 32 _SNR It is determined whether the refrigeration damper 67 is immediately opened.

When R is _SNR ≤R _OFF When the refrigerating damper 67 is opened immediately, the cold energy in the refrigerating storage compartment 32 is conveyed into the temperature-changing storage compartment 33, so that the refrigerating requirement in the temperature-changing storage compartment 33 is met.

When R is _SNR ＞R _OFF When it is equal to F _SNR ≤F _OFF When the refrigerating and cooling branch is switched and connected between the condenser 22 and the compressor 21, the refrigerating air door 67 is opened, and the refrigerating capacity is transmitted to the refrigerating and storing compartment 32 under the condition that the normal refrigerating demands of the refrigerating and storing compartment 31 and the refrigerating and storing compartment 32 are not affected.

Further, when F is acquired _SNR Higher than F _ON At the same time, obtain B _SNR Higher than B _ON And B is _SET Satisfy B _SET When the temperature is less than 0, the compressor 21 is started, the cooling circuit is communicated, the freezing air door 65 is opened, and B is obtained _SNR When B _SNR Reach B _OFF When the freezing air door 65 is closed;

upon closing the freeze damper 65, obtain F _SNR When F _SNR Reach F _OFF At the time, R is obtained _SNR ；

When R is acquired _SNR Higher than R _OFF When the refrigerating and cooling branch is switched and connected between the condenser 22 and the compressor 21, R is obtained _SNR ；

When R is _SNR Below R _OFF At this time, the compressor 21 is turned off.

Specifically, when F _SNR ≥F _ON 、B _SNR ≥B _ON And B is _SET For the freeze mode, the compressor must be turned on21 and opening the air door, can meet the refrigerating demands of the refrigerating storage compartment 31 and the variable-temperature storage compartment 33 at the same time, so as to improve the refrigerating effect of the refrigerator. The refrigerating storage compartment 31 is utilized to reach the starting point to cause the starting time of the compressor 21, and the refrigerating storage compartment 32 is enabled to reach the shutdown temperature value, so that the starting and shutdown frequency of the compressor 21 is reduced, the refrigerating efficiency of the refrigerator is improved, and the refrigerator has the advantages of high refrigerating efficiency, energy conservation and high efficiency.

Further, when F is acquired _SNR Below F _ON 、R _SNR Is lower than the cold storage starting temperature R _ON 、B _SNR Higher than B _ON And B is _SET Satisfy B _SET When not less than 0, the refrigerating damper 67 is opened until B _SNR Reach B _OFF Closing the refrigeration damper 67, wherein R _ON Defined as the set temperature R in the refrigerated storage compartment 32 _SET On the basis of (1) adding a preset starting-up temperature threshold T _{Power-on threshold 3} ，R _ON ＝R _SET +T _{Power-on threshold 3} ；

After opening the refrigeration damper 67, when the refrigeration R is obtained _SNR Higher than the cold storage starting temperature R _ON At this time, the compressor 21 is turned on, and the refrigerating and cooling branch is switched between the condenser 22 and the compressor 21 until R _SNR Reaching the refrigerating shutdown temperature R _OFF At the time, F is acquired _SNR ；

When F is acquired _SNR Higher than F _OFF At this time, the freezing capillary 23 and the freezing evaporator 24 are switched and connected between the condenser 22 and the compressor 21 until F _SNR Below F _OFF ；

When F is acquired _SNR Below F _OFF At this time, the compressor 21 is turned off.

Specifically, only B _SNR ≥B _ON And B is _SET Satisfy B _SET When the temperature is more than or equal to 0, the refrigerating air door 67 is only required to be opened, and the refrigerating capacity can be conveyed to the variable-temperature storage compartment 33 on the premise that the refrigerating effect of the refrigerating storage compartment 32 is not affected. After delivering cold to the temperature change storage compartment 33, R is caused _SNR ≥R _ON When the compressor 21 is turned on, the refrigerating and cooling branch is switched to be connected to the condenser 22 and the pressureBetween the compressors 21 until R _SNR Reaching R _OFF Then, the refrigerating and starting time is utilized to make the refrigerating storage compartment 31 reach the shutdown temperature value.

Further, when F is acquired _SNR Below F _ON 、R _SNR Higher than R _ON At this time, the compressor 21 is turned on, and the refrigerating and cooling branch is switched between the condenser 22 and the compressor 21 to obtain B _SNR ；

When B is _SNR Higher than B _ON And B is _SET Satisfy B _SET When not less than 0, the refrigerating damper 67 is opened until B _SNR Reach B _OFF Closing the refrigeration damper 67;

when B is _SNR Higher than B _ON And B is _SET Satisfy B _SET When less than 0, wait until R _SNR Reaching R _OFF Then the freezing capillary tube 23 and the freezing evaporator 24 are switched and connected between the condenser 22 and the compressor 21, and the freezing air door 65 is opened to obtain B _SNR When B _SNR Reach B _OFF Closing the freezing air door 65 to obtain F _SNR When F _SNR Reach F _OFF At this time, the compressor 21 is turned off.

Specifically, when R is obtained _SNR ≥R _ON When the refrigerating compartment 32 is started, the compressor 21 is started up, the refrigerating and cooling branch is connected, and the refrigerant is led to the condenser 22, the refrigerating capillary tube 25 and the refrigerating evaporator 26 in sequence by the compressor 21 and then returns to the compressor 21, so that a refrigerating cycle is formed. If B is _SET And when the temperature is more than or equal to 0, the cold energy can be conveyed to the variable-temperature storage compartment 33 only by opening the refrigerating air door 67. If B is _SET < 0, wait until R _SNR Reaching R _OFF Then, the freezing capillary tube 23 and the freezing evaporator 24 are connected between the condenser 22 and the compressor 21 in a switching manner, and the freezing air door 65 is used to deliver the cooling capacity to the temperature-changing storage compartment 33. The refrigerating capacity is transmitted to the variable-temperature storage compartment 33 on the premise of not influencing the refrigerating effect of the refrigerating storage compartment 32 and the refrigerating storage compartment 31.

Compared with the prior art, the refrigerator and refrigeration control method provided by the invention have the advantages that the temperature change storage compartment 33 with the opening facing the side surface is arranged below the refrigeration storage compartment 31, so that the refrigerator at least comprises the refrigeration storage compartment 31 and the temperature change storage compartment 33 in the vertical direction, the technical problem that the top door of the refrigerator is inconvenient to take and place objects at the bottom of the refrigerator is solved, and the refrigerator has the advantage of convenience in taking objects. And cool air in the freezing storage compartment 31 and the refrigerating storage compartment 32 is respectively guided to the temperature-changing storage compartment 33 through the air delivery duct by the fan 64, so that the temperature-changing storage compartment 33 is refrigerated and frozen, new refrigerating components are not needed, and the setting of a refrigerating system is simplified. The arrangement of the freezing air door 65 and the refrigerating air door 67 can enable the variable-temperature storage compartment 33 to be communicated with the freezing storage compartment 31 and the refrigerating storage compartment 32 in a switching manner, and the cold energy is conveyed to the variable-temperature storage compartment 33 on the premise that the refrigerating effect of the refrigerating storage compartment 32 and the refrigerating storage compartment 31 is not affected. Avoid when the refrigeration demand of alternating temperature storing room 33 is refrigeration, the cooling rate is too fast, and the wind temperature of blowing into alternating temperature storing room 33 is too low and causes the partial cold-stored food material frostbite easily, and can reduce the compressor 21 start-up frequency, have the advantage that the refrigeration is meticulous, the refrigeration is on demand, energy-conserving high efficiency, refrigeration effect is better.

Fig. 6 to 8 show a second embodiment of the present invention, which is a further improvement of the first embodiment for heating the temperature-changing storage compartment 33. In fig. 6 to 8, elements with the same reference numerals as those in fig. 1 to 5 have similar functions, and are not described herein again. The first storage compartment of the second embodiment is the freezing storage compartment 31 of the first embodiment, and the capillary tube and the evaporator of the second embodiment are respectively the freezing capillary tube 23 and the freezing evaporator 24 of the first embodiment.

As shown in connection with fig. 6 and 7, the refrigeration system further includes an auxiliary condenser 71 that is selectively connected between the compressor 21 and the condenser 22. Wherein, cabinet 11 includes the alternating temperature inner bag that is used for forming alternating temperature storing room 33, and wherein, auxiliary condenser 71 sets up on the alternating temperature inner bag. Preferably, the auxiliary condenser 71 is provided on the outer wall of the temperature changing liner. The heat from the auxiliary condenser 71 is conducted into the temperature change storage compartment 33.

The refrigerator further comprises a heat pipe fixed on the auxiliary condenser 71, and the heat pipe is arranged on the variable-temperature liner. The auxiliary condenser 71 is indirectly fixed on the temperature changing liner through a heat pipe. The heat from the auxiliary condenser 71 is conducted through the heat pipe into the temperature change storage compartment 33.

Further, the refrigeration system further includes a third three-way valve 72 connected to the outlet end of the compressor 21, and a fourth three-way valve 73 connected to the outlet end of the auxiliary condenser 71. The third three-way valve 72 has one inlet, two outlets, and the fourth three-way valve 73 has two inlets, one outlet.

An inlet of the third three-way valve 72 is connected to an outlet of the compressor 21, and two outlets of the third three-way valve 72 are respectively connected to an inlet of the auxiliary condenser 71 and a fourth three-way valve 73. When the temperature change storage compartment 33 does not require heating, the outlet of the third three-way valve 72 is disconnected from the inlet end of the auxiliary condenser 71. When the temperature-changing storage compartment 33 needs to be heated, the outlet of the third three-way valve 72 is communicated with the inlet end of the auxiliary condenser 71.

Two inlets of the fourth three-way valve 73 are respectively connected to the inlet end of the auxiliary condenser 71 and one outlet of the third three-way valve 72, and one outlet of the fourth three-way valve 73 is connected to the inlet end of the condenser 22. The purpose of switching the auxiliary condenser 71 between the compressor 21 and the condenser 22 is achieved by the combination of the third three-way valve 72 and the fourth three-way valve 73.

When the auxiliary condenser 71 is switched between the compressor 21 and the condenser 22, the refrigerant is sequentially led from the compressor 21 to the auxiliary condenser 71, the condenser 22, the refrigeration capillary 25, and the refrigeration evaporator 26, and returned to the compressor 21, thereby forming a refrigeration cycle. The auxiliary condenser 71 can heat the variable-temperature storage compartment 33 by utilizing the heat generated by the auxiliary condenser 71, and can also improve the condensation amount of the refrigerant in the refrigerating system so as to improve the refrigerating efficiency of the refrigerating system.

In order to solve the problems, the invention also provides a refrigeration control method of the refrigerator.

Referring to fig. 8, a refrigeration control method of a refrigerator as described above includes:

acquiring a signal of whether the temperature-changing storage compartment 33 needs to be heated or not;

after the signal of the temperature-changing storage compartment 33 needing to be heated is obtained, the working state of the compressor 21 is obtained;

when the compressor 21 is in the on state, the auxiliary condenser 71 is connected between the compressor 21 and the condenser 22 to obtain the temperature B of the variable temperature chamber _SNR ；

When the compressor 21 is in the stop state, the compressor 21 is started, the auxiliary condenser 71 is communicated between the compressor 21 and the condenser 22, and the temperature B of the variable-temperature chamber is obtained _SNR ；

When B is acquired _SNR Heating shutdown temperature BH in temperature-changing storage compartment 33 _OFF The compressor 21 is turned off, wherein BH _OFF Defined as a set heating temperature B in the temperature change storage compartment 33 _SET1 On the basis of the shutdown temperature threshold T in the variable-temperature storage compartment 33 _{Heating shutdown} ，BH _OFF ＝B _SET1 +T _{Heating shutdown} ，B _SET ＞0。

Specifically, when the compressor 21 is in the working state, the auxiliary condenser 71 is directly connected between the compressor 21 and the condenser 22, the refrigerant is sequentially led from the compressor 21 to the auxiliary condenser 71, the condenser 22, the capillary tube and the evaporator, and then returns to the compressor 21 to form a refrigeration cycle, and the temperature-changing storage compartment 33 is heated by the heat generated by the auxiliary condenser 71.

When the compressor 21 is not in the operating state, the compressor 21 is turned on, and the auxiliary condenser 71 is communicated between the compressor 21 and the condenser 22. The refrigerant is sequentially led from the compressor 21 to the auxiliary condenser 71, the condenser 22, the capillary tube and the evaporator, and then returned to the compressor 21 to form a refrigeration cycle, and the temperature-changing storage compartment 33 is heated by the heat generated by the auxiliary condenser 71.

Further, the refrigeration control method includes:

when the compressor 21 is in the stop state, after the compressor 21 is started, the stop temperature T in the first storage compartment is less than or equal to the temperature T in the first storage compartment _OFF When the compressor is turned off21 and for a first preset time T1, wherein T _OFF Defined as the set temperature T in the first storage compartment _SET Subtracting a preset shutdown temperature threshold T of the first storage compartment _{Shutdown threshold} ，T _OFF ＝T _SET －T _{Shutdown threshold} ；

After the first preset time t1 is continued, the start and stop of the compressor 21 are repeated until BH _SNR ≥B _OFF The compressor 21 is turned off.

Specifically, when the compressor 21 is in the shutdown state, the compressor 21 needs to be turned on to heat the temperature-changing storage compartment 33, which results in a decrease in the temperature of the first storage compartment, but in order not to affect the cooling effect of the first storage compartment, when the temperature T of the first storage compartment is less than or equal to the shutdown temperature T in the first storage compartment _OFF When the compressor 21 is turned off, the first preset time t1 is maintained, so that the temperature of the first storage compartment is increased, the first storage compartment is prevented from being too low, and the auxiliary condenser 71 is operated by repeatedly starting and stopping the compressor 21, so that the heat generated by the auxiliary condenser 71 is used for heating the variable-temperature storage compartment 33. And the refrigerant of the compressor 21 mainly enters the auxiliary condenser 71 in a short time when the compressor 21 is turned on, and the amount of the refrigerant entering the evaporator is not large. Therefore, the refrigerating effect of the first storage compartment is not affected.

Further, the aforementioned method of repeatedly starting and stopping the compressor 21 includes:

turning on the compressor 21;

after the compressor 21 is turned on, the temperature T is less than or equal to T _OFF For a second preset time T2 or after starting the compressor 21 for a third preset time T3, determining whether T satisfies T.gtoreq.T _ON Wherein T1 > T3 > T2, T _ON Defined as at T _SET On the basis of the preset starting temperature threshold T of the first storage compartment _{Boot threshold} ，T _ON ＝T _SET +T _{Boot threshold} ；

When T meets T not less than T _ON When the compressor 21 is set to be in a starting state until T < T _ON When T satisfies T < T _ON At this time, the compressor 21 is turned off and the first one is maintainedPresetting time t1;

when T satisfies T < T _ON At this time, the compressor 21 is turned off and maintained for a first preset time t1.

Preferably, t1 is set to 5min, t2 is set to 1min, and t3 is set to 3min.

Wherein the time for shutting down the compressor 21 is longer than the time for starting the compressor 21, so that the temperature in the first storage compartment is closer to T _OFF The temperature of the first storage compartment is prevented from being too low.

After the first preset time t1, the repeated start-stop procedure of the compressor 21 is entered,

specifically, when the temperature T is equal to or less than T _OFF For the second preset time t2, in order to avoid the temperature of the first storage compartment being too low, the compressor 21 needs to be turned off for the first preset time t1.

When the temperature T is greater than T _OFF Lasting for a third preset time T3 because T does not reach T _OFF The compressor 21 on time may be relatively long.

The effect of controlling the heating drawer is achieved by frequently switching on and off the compressor 21 control logic to achieve the auxiliary condenser 71 warming up without affecting the temperature of the refrigeration compartment.

Further, when the refrigerator further comprises a refrigerating compartment 32, the refrigerating system further comprises a refrigerating branch which is arranged in parallel with the connecting pipeline formed by the freezing capillary 23 and the freezing evaporator 24. The refrigeration cooling branch is used to provide cooling to the refrigerated storage compartment 32. The refrigeration and cold supply branch comprises a refrigeration capillary 25 and a refrigeration evaporator 26 which are connected through pipelines.

When freezing the temperature F in the storage compartment 31 _SNR F. gtoreq.the freezing storage compartment 31 _SET At this time, the connection line between the freezing capillary tube 23 and the freezing evaporator 24 is switched between the condenser 22 and the compressor 21.

So that the refrigerant is sequentially led from the compressor 21 to the auxiliary condenser 71, the condenser 22, the freezing capillary tube 23, the freezing evaporator 24, and then returned to the compressor 21, forming a refrigeration cycle.

Further, when freezing the temperature F in the storage compartment 31 _SNR < F of frozen storage compartment 31 _SET And the temperature R in the refrigerated storage compartment 32 _SNR R of the frozen storage compartment 31 _SET A connection line between the refrigeration capillary 25 and the refrigeration evaporator 26 is switched between the condenser 22 and the compressor 21.

So that the refrigerant is sequentially led from the compressor 21 to the auxiliary condenser 71, the condenser 22, the refrigerating capillary tube 25, the refrigerating evaporator 26, and then returned to the compressor 21, forming a refrigerating cycle. The refrigeration and cold supply branch comprises a refrigeration capillary 25 and a refrigeration evaporator 26 which are connected through pipelines.

Further, when freezing the temperature F in the storage compartment 31 _SNR < F of frozen storage compartment 31 _SET And the temperature R in the refrigerated storage compartment 32 _SNR R < frozen storage compartment 31 _SET A connection line between the freezing capillary tube 23 and the freezing evaporator 24 is switched between the condenser 22 and the compressor 21.

According to the refrigerator and refrigeration control method provided by the embodiment of the invention, the temperature-changing storage compartment 33 with the opening facing the side surface is arranged below the freezing storage compartment 31, so that the refrigerator at least comprises the freezing storage compartment 31 and the temperature-changing storage compartment 33 in the vertical direction, the technical problem that the top door of the refrigerator is inconvenient to take and place articles at the bottom of the refrigerator is solved, and the refrigerator has the advantage of convenience in taking and placing articles. By the provision of the auxiliary condenser 71, which is optionally connected between the compressor 21 and the condenser 22, the refrigerant is sequentially led from the compressor 21 to the auxiliary condenser 71, the condenser 22, the capillary tube, the evaporator, and then returned to the compressor 21, forming a refrigeration cycle. The auxiliary condenser 71 can heat the variable-temperature storage compartment 33 by utilizing the heat generated by the auxiliary condenser 71, and can also improve the condensation amount of the refrigerant in the refrigerating system so as to improve the refrigerating efficiency of the refrigerating system. Has the advantages of energy saving, high efficiency and reasonable utilization of resources.

Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be understood that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims

1. The refrigerator comprises a refrigerator body and a refrigerating system arranged in the refrigerator body, wherein the refrigerator body defines a refrigerating storage compartment, the refrigerating system comprises a compressor, a condenser, a refrigerating capillary tube and a refrigerating loop of a refrigerating evaporator which are connected through pipelines, the refrigerating evaporator is used for providing refrigerating capacity for the refrigerating storage compartment,

the cabinet body is internally provided with a refrigeration storage compartment which is independently arranged with the refrigeration storage compartment in the horizontal direction;

2. The refrigerator according to claim 1, wherein: the refrigerating storage compartment and the refrigerating storage compartment are adjacently arranged in the horizontal direction, and the air duct is arranged between the refrigerating storage compartment and the refrigerating storage compartment;

3. The refrigerator according to claim 1, wherein: the cold storage and cooling branch comprises a cold storage capillary tube and a cold storage evaporator which are connected through pipelines;

4. The refrigerator according to claim 1, wherein: the refrigeration system further includes an auxiliary condenser selectively connected between the compressor and the condenser;

5. The refrigerator of claim 4, wherein: the refrigeration system further comprises a third three-way valve connected to the outlet end of the compressor and a fourth three-way valve connected to the outlet end of the auxiliary condenser;

6. The refrigerator according to claim 1, wherein: the freezing storage compartment and the refrigerating storage compartment are respectively arranged in a downward extending way from the top of the cabinet body;

7. The refrigerator of claim 6, wherein: the openings of the freezing storage compartment and the refrigerating storage compartment are respectively arranged upwards;

8. The refrigerator according to claim 1, wherein: the refrigerating air return channel is communicated with the refrigerating storage compartment and the temperature-changing storage compartment.

9. A refrigeration control method of a refrigerator according to any one of claims 1 to 8, characterized in that: comprising the steps of (a) a step of,

after opening the refrigerating air door or the freezing air door, the temperature B in the temperature-changing storage room _SNR Reaching the shutdown temperature B in the temperature-changing storage room _OFF Closing a refrigeration damper, or closing a freezing damper, wherein B _OFF Defined as at B _SET Subtracting a shutdown temperature threshold T preset in the variable-temperature storage compartment on the basis of _{Shutdown threshold 1} ，B _OFF ＝B _SET －T _{Shutdown threshold 1} 。

10. The refrigeration control method according to claim 9, characterized in that:

when F is acquired _SNR Higher than the freezing start-up temperature F of the freezing storage compartment _ON At the same time, obtain B _SNR Higher than B _ON And B is _SET Satisfy B _SET When the temperature is more than or equal to 0, the compressor is turned on, and the temperature R in the refrigerating storage room is obtained _SNR And thereinFreezing start temperature F _ON Defined as the set temperature F in the refrigerated storage compartment _SET On the basis of (1) adding a preset starting-up temperature threshold T _{Power-on threshold 2} ，F _ON ＝F _SET +T _{Power-on threshold 2} ；

11. The refrigeration control method according to claim 9, characterized in that:

when F is acquired _SNR Higher than F _ON At the same time, obtain B _SNR Higher than B _ON And B is _SET Satisfy B _SET When the temperature is less than 0, starting the compressor, communicating the cooling loop and opening the refrigeration air door to obtain B _SNR When B _SNR Reach B _OFF Closing the freezing air door when the air conditioner is in operation;

When R is _SNR Below R _OFF When the compressor is turned off.

12. The refrigeration control method according to claim 9, characterized in that:

when F is acquired _SNR Below F _ON 、R _SNR Is lower than the cold storage starting temperature R _ON 、B _SNR Higher than B _ON And B is _SET Satisfy B _SET When the temperature is more than or equal to 0, opening a refrigeration air door until B _SNR Reach B _OFF Closing the refrigeration damper, wherein R _ON Defined as the set temperature R in the refrigerated storage compartment _SET On the basis of (1) adding a preset starting-up temperature threshold T _{Power-on threshold 3} ，R _ON ＝R _SET +T _{Power-on threshold 3} ；

When F is acquired _SNR Below F _OFF When the compressor is turned off.

13. The refrigeration control method according to claim 9, characterized in that:

when F is acquired _SNR Below F _ON 、R _SNR Higher than R _ON When the compressor is started, the refrigerating and cooling branch is switched and connected between the condenser and the compressor, and B is obtained _SNR ；

When B is _SNR Higher than B _ON And B is _SET Satisfy B _SET When not less than 0, openRefrigerating air door until B _SNR Reach B _OFF Closing the refrigeration air door;

when B is _SNR Higher than B _ON And B is _SET Satisfy B _SET When less than 0, wait until R _SNR Reaching R _OFF Then switching the freezing capillary tube and the freezing evaporator between the condenser and the compressor, opening the freezing air door to obtain B _SNR When B _SNR Reach B _OFF Closing the freezing air door to obtain F _SNR When F _SNR Reach F _OFF When the compressor is turned off.