CN116734539A - Refrigerator and refrigeration control method - Google Patents

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 first storage compartment, the refrigerating system comprises a compressor, a condenser, a capillary tube and a cooling loop of an evaporator which are connected through pipelines, the evaporator is used for providing cold for the first storage compartment, and the refrigerator body also comprises a variable-temperature storage compartment which is arranged below the first storage compartment and has an opening facing to the side face; the refrigeration system further includes an auxiliary condenser selectively connected between the compressor and the condenser; the cabinet body comprises a temperature-changing liner for forming the temperature-changing storage compartment; the refrigerator comprises a temperature changing inner container, an auxiliary condenser, a temperature changing inner container and a heat pipe, wherein the auxiliary condenser is fixed on the temperature changing inner container, or the refrigerator further comprises the heat pipe fixed on the auxiliary condenser, and the heat pipe is arranged on the temperature changing inner container. Has the advantages of energy saving, high efficiency and reasonable utilization of resources.

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. In addition, in the prior art, the storage space in the horizontal refrigerator is used for cooling, and the storage space which can be used for heating is not available in the horizontal refrigerator, so that a refrigerator and a refrigeration control method are necessary to be studied to solve the problems.

Disclosure of Invention

The invention aims to provide a refrigerator which is convenient to take things, energy-saving, efficient and reasonably utilizes resources.

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 first storage compartment, the refrigeration system including a compressor, a condenser, a capillary tube, and a cooling circuit of an evaporator connected by a pipeline, the evaporator being used for providing cooling capacity for the first storage compartment, the cabinet body further including a temperature-changing storage compartment disposed below the first storage compartment and having an opening facing a side surface; the refrigeration system further includes an auxiliary condenser selectively connected between the compressor and the condenser; the cabinet body comprises a temperature-changing liner for forming the temperature-changing storage compartment; the refrigerator comprises a temperature changing inner container, an auxiliary condenser, a temperature changing inner container and a heat pipe, wherein the auxiliary condenser is fixed on the temperature changing inner container, or the refrigerator further comprises the heat pipe fixed on the auxiliary condenser, and the heat pipe is arranged on the temperature changing inner container.

As a further improvement of an embodiment of the invention, the first storage compartment is a freezing storage compartment with an upward opening;

The capillary tube and the evaporator are respectively set as a freezing capillary tube and a freezing evaporator;

the cabinet body further comprises a first air supply device arranged in the cabinet body;

the first air supply device comprises a first air supply channel which is communicated with the freezing storage compartment and the temperature-changing storage compartment, a first air door which is controlled to be conducted or closed, and a first fan which is arranged in the air supply channel;

the refrigerator further comprises a first air return channel which is communicated with the freezing storage compartment and the temperature-changing storage compartment, and the first air return channel and the first air delivery channel are arranged separately.

As a further improvement of an embodiment of the present invention, the first storage compartment is a frozen storage compartment;

the capillary tube and the evaporator are respectively set as a freezing capillary tube and a freezing evaporator;

the cabinet body further comprises a refrigeration storage compartment which is arranged adjacent to the refrigeration storage compartment in the 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 second air supply device arranged between the freezing storage compartment and the refrigerating storage compartment;

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

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

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.

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 includes a second three-way valve coupled to the inlet end of the compressor, the second three-way valve having two inlets and an 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 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.

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

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

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

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

when the compressor is in a starting state, an auxiliary condenser is communicated between the compressor and the condenser, and the temperature B of the variable-temperature chamber is obtained _SNR ；

When obtainingWhen the compressor is in a stop state, the compressor is started, an auxiliary condenser is communicated between the compressor and the condenser, 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 room _OFF Closing the compressor, wherein BH _OFF Defined as the set heating temperature B in the temperature-changing storage compartment _SET1 On the basis of the temperature threshold T of the shutdown in the temperature-changing storage room _{Heating shutdown} ，BH _OFF ＝B _SET1 +T _{Heating shutdown} ，B _SET ＞0。

As a further improvement of the embodiment of the invention, when the temperature T of the first storage compartment is less than or equal to the shutdown temperature T of the first storage compartment after the compressor is started when the compressor is in the shutdown state _OFF At the same time, the compressor is turned off and maintained 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 compressor is repeatedly started and stopped until B _SNR ≥BH _OFF The compressor is turned off.

As a further improvement of an embodiment of the present invention, the method of repeatedly starting and stopping the compressor includes:

starting the compressor; after the compressor is started, the temperature T is less than or equal to T _OFF Continuing the second preset time T2, or after starting the compressor and continuing the second preset time T3, judging whether T meets T being more than or equal to 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 is set to keep the starting state until T is less than T _ON When T satisfies T < T _ON When the compressor is turned off, and the first one is maintainedPresetting time t1;

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

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. By the arrangement of the auxiliary condenser which is optionally connected between the compressor and the condenser, the refrigerant is led from the compressor to the condenser, the auxiliary condenser, the capillary tube, the evaporator in sequence, and back to the compressor, forming a refrigeration cycle. The auxiliary condenser is arranged, so that heat generated by the auxiliary condenser can be used for heating the variable-temperature storage compartment, and the condensation amount of the refrigerant in the refrigerating system can be improved, so that the refrigerating efficiency of the refrigerating system is improved. Has the advantages of energy saving, high efficiency and reasonable utilization of resources.

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 schematic structural diagram of a refrigeration system of a refrigerator according to an embodiment of the present invention when the refrigeration system includes an auxiliary condenser;

fig. 4 is a flow chart of a first embodiment of the refrigerator of the present invention;

fig. 5 is a schematic structural diagram of a refrigerator according to a second embodiment of the present invention;

fig. 6 is a flow chart of a freezing storage compartment of a refrigerator according to a second embodiment of the present invention to cause a compressor to start;

fig. 7 is a flow chart of a temperature change storage compartment of a refrigerator according to a second embodiment of the present invention to cause a compressor to start;

fig. 8 is a flow chart of a refrigerating compartment of a refrigerator according to a second embodiment of the present invention to cause a compressor to be started;

fig. 9 is a schematic structural diagram of a refrigerator according to a third embodiment of the present invention;

fig. 10 is a flowchart of initial power-up of a refrigerator according to a third embodiment of the present invention;

FIG. 11 is a flow chart of a freezer compartment of a third embodiment of the invention when the compressor is turned on;

fig. 12 is a flow chart of a refrigeration compartment of a refrigerator according to a third embodiment of the present invention when the compressor is started.

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; 41. a first air delivery duct; 411. an air inlet; 412. an air outlet; 42. a damper; 43. a first fan; 44. a fan housing; 51. a first return air duct; 52. a return air door; 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. a first 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 the present application, when the user uses the refrigerator, the side facing the user is defined as the front.

The present application relates generally to: a refrigerator comprises a refrigerator body 11 and a refrigerating system arranged in the refrigerator body 11.

Fig. 1 to 4 show a first embodiment of the application.

Referring to fig. 1, the cabinet 11 includes a housing, a liner disposed in the housing, and a heat insulating layer disposed between the housing and the liner. The liner defines a first storage compartment.

As shown in fig. 2, the refrigeration system includes a compressor 21, a condenser 22, a capillary tube, and a refrigeration circuit of an evaporator connected by piping. The refrigerant is sequentially led from the compressor 21 to the condenser 22, capillary tube, evaporator, and back to the compressor 21, thereby forming a refrigeration cycle. The evaporator is used for providing cold energy for the first storage compartment. The evaporator may be provided as a refrigeration evaporator or a freeze evaporator.

When the evaporator is provided as a refrigerated evaporator 26, the first compartment serves as a refrigerated compartment 32. When the evaporator is set as the freezing evaporator 24, the first storage compartment serves as the freezing storage compartment 31.

The cabinet 11 further includes a temperature change compartment 33 disposed below the first compartment and having an opening facing the side. Articles are taken from and placed in the opening of the temperature change 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.

As shown in connection with fig. 3, the refrigeration system also includes an auxiliary condenser 71 that is selectively connected between the compressor 21 and the condenser 22. 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 capillary tube, and the evaporator, and is 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. Has the advantages of energy saving, high efficiency and reasonable utilization of resources.

When the compressor 21 is directly connected to the condenser 22, the refrigerant is sequentially led from the compressor 21 to the condenser 22, capillary tube, evaporator, and then returned to the compressor 21, thereby forming a refrigeration cycle.

The cabinet 11 includes a temperature change bladder for forming a temperature change storage compartment 33.

In the first fixing mode of the auxiliary condenser 71, the auxiliary condenser 71 is fixed on the temperature changing liner. 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 second fixing mode of the auxiliary condenser 71, the refrigerator further comprises a heat pipe fixed on the auxiliary condenser 71, and the heat pipe is arranged on the temperature changing 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.

Further, the refrigeration system also includes a dry filter 27 connected between the condenser 22 and the first three-way valve.

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

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

Referring to fig. 4, 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 At this time, the compressor 21 is turned off and maintained for a first preset time T1, where 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.

The method of setting the first storage compartment as the refrigerating storage compartment 32 is the same as the control method of setting the first storage compartment as the freezing storage compartment 31.

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 maintained for a first preset 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, the first storage compartment is defined as a freezing storage compartment 31, and the capillary tube and the evaporator are defined as a freezing capillary tube 23 and a freezing evaporator 24, respectively. When the refrigerator further comprises a refrigerating storage compartment 32, the refrigerating system further comprises a refrigerating and cooling 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.

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.

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.

Fig. 5 to 8 show a second embodiment of the present invention, which is further designed based on the first embodiment, so that the temperature-changing storage compartment 33 can be switched between heating and cooling. In fig. 5 to 8, elements with the same reference numerals as those in fig. 1 to 4 have similar functions, and are not described here again.

As shown in fig. 5, the first storage compartment is a frozen storage compartment 31 having an upward opening. In a daily use scenario, the refrigerator is often used as a refrigerator, and therefore, the first storage compartment is a refrigerator storage compartment 31 provided with an upward opening. The opening of the first storage compartment is provided with a top-opening door body 12. 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.

The capillary tube and the evaporator are respectively a freezing capillary tube 23 and a freezing evaporator 24. 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.

The cabinet 11 further includes a first air supply device disposed in the cabinet 11. The first air supply device delivers the cooling energy in the freezing compartment 31 to the temperature changing compartment 33.

The first air supply device comprises a first air supply duct 41 which is communicated with the freezing storage compartment 31 and the variable-temperature storage compartment 33, a first air door 42 which is controlled to be communicated with or closed off the first air supply duct 41, and a first fan 43 which is arranged in the air supply duct.

The first fan 43 guides the cool air in the freezing storage compartment 31 to the temperature-changing storage compartment 33 through the first air delivery duct 41, so that the temperature-changing storage compartment 33 is refrigerated. The first air supply device is used for conveying the cold energy in the freezing storage compartment 31 into the variable-temperature storage compartment 33, so that new refrigerating components are not needed, and the setting of a refrigerating system is simplified. Has the advantages of reduced cost, compact structure, convenient taking and simple refrigeration control.

The refrigerator further comprises a first air return duct 51 communicated with the freezing storage compartment 31 and the variable-temperature storage compartment 33, and the first air return duct 51 and the first air delivery duct 41 are arranged separately. The first return air duct 51 includes return air interfaces that are respectively communicated with the freezing storage compartment 31 and the temperature-changing storage compartment 33.

The cold air in the freezing storage compartment 31 enters the temperature-changing storage compartment 33 for refrigeration through the first air delivery duct 41 under the drive of the first fan 43, and then returns to the freezing storage compartment 31 through the first air return duct 51 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. By the arrangement, the temperature-changing storage compartment 33 can be switched between heating and cooling.

Preferably, the refrigerator further includes a first return air door 52 controllably opening or closing the first return air duct 51. The cold air of the temperature-changing storage compartment 33 is prevented from flowing back into the freezing storage compartment 31 through the first air return duct 51, and the refrigerating effect of the freezing storage compartment 31 is prevented from being affected.

Further, the air supply device further includes an air inlet 411 and an air outlet 412 respectively disposed at two ends of the air supply duct 41. Wherein, the air inlet 411 is communicated with the freezing storage compartment 31 and the air delivery duct 41, and the air outlet 412 is communicated with the air delivery duct 41 and the storage compartment. The cool air in the freezing storage compartment 31 enters the air delivery duct 41 through the air inlet 411 under the drive of the fan 43, enters the temperature-changing storage compartment 33 through the air outlet 412 for refrigeration, and returns to the freezing storage compartment 31 through the air return duct 51 to complete the circulation of air flow, so that the cool air in the freezing storage compartment 31 is conveyed to the temperature-changing storage compartment 33.

The air supply device further comprises a fan housing 44 arranged at the air inlet 411.

The damper 42 is provided at the air inlet 411. The damper 42 is used to open or close the air inlet 411, thereby controllably opening or closing the air delivery duct 41.

Further, the refrigerator further includes temperature sensors respectively provided in the freezing storage compartments 31.

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. 6 to 8.

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 If not less than 0, the first damper 42 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 compressor 21 is started, the cooling circuit is communicated, and the first air door 42 is opened;

after opening the first damper 42, the temperature B in the temperature change compartment 33 _SNR Reaching shutdown temperature B in the temperature-changing storage compartment 33 _OFF Closing the first damper 42, 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, a refrigeration cooling line formed by connecting the refrigeration capillary 23 and the refrigeration evaporator 24 through a line is defined.

The temperature sensor in the temperature-changing storage compartment 33 which needs refrigeration in the temperature-changing 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, at the moment, the compressor 21 is not required to be started, only the first air door 42 is required to be opened, so that the cold in the freezing storage compartment 31 is conveyed into the temperature-changing storage compartment 33, and the refrigerating requirement in the temperature-changing storage compartment 33 can be met. Meanwhile, the refrigerating capacity in the refrigerating storage compartment 31 is conveyed into the temperature-changing storage compartment 33 for refrigeration, so that the moisture-preserving effect in the temperature-changing storage compartment 33 is good.

It can be understood that, when the refrigerator is in the initial power-on state, the compressor 21 can be opened, the first air door 42 can be opened, so that the cold energy in the freezing storage compartment 31 can be transferred into the temperature-changing storage compartment 33, and the requirement of refrigerating in the temperature-changing storage compartment 33 can be met.

When B is _SET At this time, the refrigerating mode in the temperature-changing compartment 33 is the freezing mode, and at this time, the compressor 21 needs to be turned on, the cooling circuit is connected and the first damper 42 is opened, and the refrigerant is sequentially led from the compressor 21 to the condenser 22, the freezing capillary tube 23, the freezing evaporator 24, and then returned to the compressor 21, thereby forming a freezing and refrigerating cycle. If only the first air door 42 is opened, the cooling capacity in the freezing compartment 31 may not meet the cooling capacity requirement 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 in 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 first air door 42 is opened, wherein the freezing 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 _{Boot threshold} ，F _ON ＝F _SET +T _{Power-on threshold 2} ；

A preset time t after opening the first damper 42 _Presetting In, when B _SNR Reach B _OFF When the first damper 42 is closed and the compressor 21 is opened;

exceeding a preset time t after opening the first damper 42 _Presetting ，B _SNR Not reach B _OFF The compressor 21 is turned on to put the cooling circuit in a connected state, and B is taken _SNR When B is _SNR Reach B _OFF When the first damper 42 is closed;

acquisition of F after closing the first damper 42 _SNR When F _SNR Reaching the shutdown temperature F in the refrigerated storage compartment 31 _OFF At the time, the compressor 21 is turned off, wherein F _OFF Defined as at F _SET Subtracting a preset shutdown temperature threshold T of the refrigerated storage compartment 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 start point to start up, the method according to B _SET Whether to be in the refrigeration mode or the freeze mode, it is determined whether to immediately open the first damper 42 and the compressor 21, or to first open the first damper 42 to cool the temperature change compartment 33 and then to open the compressor 21.

When F _SNR ≥F _ON And B is _SET In the refrigerating mode, the refrigerating during the stop of the compressor 21 can ensure certain humidity, so that the variable-temperature storage compartment 33 achieves the effects of fresh-keeping, refrigerating and refrigerating. Wait until B _SNR ≤B _OFF The starting frequency of the compressor 21 can be reduced by starting the compressor 21 again, so that the energy consumption is saved, and the energy-saving and high-efficiency advantages are realized.

Preferably t _Presetting Set to 20 minutes, when more than 20 minutes after opening the first damper 42, B _SNR Not reach B _OFF The low efficiency of the cold transfer from the freezing compartment 31 to the temperature change compartment 33 is described, and the shortage of the cold in the freezing compartment 31 requires the compressor 21 to be turned on.

B _SNR Reach B _OFF Then make F through the compressor 21 _SNR Reaching the shutdown temperature F in the refrigerated storage compartment 31 _OFF So as not to affect the cooling effect in the refrigerated storage compartment 31. Has the advantages of meeting the refrigeration requirement in the variable-temperature storage compartment 33 while not affecting the refrigeration effect in the freezing storage compartment 31.

Fig. 9 to 12 show a third embodiment of the present invention, which is further designed based on the first embodiment, so that the temperature-changing storage compartment 33 can be switched between heating and cooling. In fig. 9 to 12, elements with the same reference numerals as those in fig. 1 to 4 have similar functions, and are not described herein again.

Further, the first storage compartment is provided as a refrigerated storage compartment 31.

The capillary tube and the evaporator are respectively a freezing capillary tube 23 and a freezing evaporator 24. 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.

As shown in connection with fig. 9, the cabinet 11 further includes a refrigerated storage compartment 32 disposed adjacent to the refrigerated storage compartment 31 in a horizontal direction.

The refrigeration system also comprises a refrigeration and cold supply 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 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 comprises a freezing air duct communicated with the freezing storage compartment 31 and a freezing air supply fan arranged in the freezing air duct. The freezing evaporator 24 is disposed in the freezing air duct, and the freezing air supply fan is disposed close to the freezing evaporator 24, and provides cold energy 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, the refrigerated evaporator 26 is secured to the outer wall of the refrigerated liner and provides 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 refrigerating and air supplying unit comprises a refrigerating air channel communicated with the refrigerating storage compartment 32 and a refrigerating and air supplying fan arranged in the refrigerating air channel. The refrigerating evaporator 26 is disposed in the refrigerating air duct, and the refrigerating air supply fan is disposed near the refrigerating evaporator 26 and provides cold energy for the refrigerating compartment 32 by air-cooling.

The cabinet 11 further includes a second air supply device disposed between the refrigerated storage compartment 31 and the refrigerated storage compartment 32.

The second air supply device comprises a second air supply channel, wherein the second air supply channel 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, a first air outlet 631 communicated with the first air inlet 611 and the second air inlet 621, and a fan for guiding the air flow of the first air inlet 611 and the second air inlet 621 to the temperature-changing storage compartment 33 through the first 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 first air outlet 631. The cold air in the refrigerating compartment 32 enters the temperature-changing compartment 33 through the second air inlet 621 and the first air outlet 631. So that the temperature-changing storage compartments 33 can be refrigerated and cooled respectively.

The fans respectively guide the cool air in the freezing storage compartment 31 and the refrigerating storage compartment 32 to the temperature-changing storage compartment 33 through the second air delivery duct, 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.

In the first embodiment of the arrangement of fans in the second air duct, a fan is provided, which is arranged close to the first air outlet 631.

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

The fans respectively drive the cold air in the freezing storage compartment 31 to enter the temperature-changing storage compartment 33 through the first air inlet 611 and the first air outlet 631, and the cold air in the refrigerating storage compartment 32 enters the temperature-changing storage compartment 33 through the second air inlet 621 and the first air outlet 631. The fan provides power for the air duct, so that the air flow forcedly flows.

The second air supply device further comprises a refrigeration damper 65 for controllably switching on or off the air flow between the first air inlet 611 and the first air outlet 631, and a refrigeration damper 67 for controllably switching on or off the air flow between the second air inlet 621 and the first 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. By the arrangement, the temperature-changing storage compartment 33 can be switched between heating and cooling.

The refrigerator further comprises a freezing air return channel 81 communicated with the freezing storage compartment 31 and the variable-temperature storage compartment 33, and a refrigerating air return channel 82 communicated with the refrigerating storage compartment 32 and the variable-temperature storage compartment 33.

The freezing return air duct 81 comprises return air opposite interfaces which are respectively communicated with the freezing storage compartment 31 and the temperature-changing 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, 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.

The refrigeration return air duct 82 comprises a return air opposite interface which is respectively communicated with the refrigeration 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 through the air delivery duct under the drive of the fan, and then returns to the refrigerating storage compartment 32 through the air return duct 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 refrigeration return air door which controllably opens or closes the refrigeration return air duct 81. 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 also includes a refrigeration return damper that controllably opens or closes the refrigeration return duct 82. 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 the first 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 the first air outlet 631 with 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 duct 63, and the first air outlet 631. So that the temperature change storage compartment 33 can be refrigerated.

The cool 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 first 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. The inlet end of the refrigerated capillary tube 25 is connected in parallel with the inlet end of the refrigerated capillary tube 23 to the 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. Wherein the refrigerated evaporator 26 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 26, 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 refrigerating and cooling branch is switchably connected between the condenser 22 and the compressor 21 in such a way that the refrigerating system further comprises a first three-way valve 28 connected to the outlet end of the condenser 22, the first three-way valve 28 having one 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 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 provided as the top-opening door body 12.

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. 10 to 12.

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.

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 At the time of < 0, the refrigerating mode in the temperature-changing storage compartment 33 is the freezing mode, at this time, the compressor 21 needs to be turned on, the cooling circuit is communicated and the damper is opened, and the refrigerant is sequentially led from the compressor 21 to the condenser 22, the freezing capillary tube 23 and the freezing evaporator 24 and then returns to the compressor 21 to form a freezing refrigerating 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 When the refrigerating wind is turned onDoor 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 a preset shutdown temperature threshold T of the refrigerated storage compartment 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 AboveF _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 In order to realize the freezing mode, the compressor 21 and the air door must be opened to simultaneously meet the requirements of freezing and refrigerating the freezing storage compartment 31 and the variable-temperature storage compartment 33 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 When the compressor 21 is turned on, and the refrigeration and cold supply branch is switched to be connected to the condenser 22Between the compressor 21 and the oil-water separator 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 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 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.

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 (10)

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

the cabinet body further comprises a temperature-changing storage compartment which is arranged below the first storage compartment and provided with an opening facing the side face;

the refrigeration system further includes an auxiliary condenser selectively connected between the compressor and the condenser;

The cabinet body comprises a temperature-changing liner for forming the temperature-changing storage compartment;

the refrigerator comprises a temperature changing inner container, an auxiliary condenser, a temperature changing inner container and a heat pipe, wherein the auxiliary condenser is fixed on the temperature changing inner container, or the refrigerator further comprises the heat pipe fixed on the auxiliary condenser, and the heat pipe is arranged on the temperature changing inner container.

2. The refrigerator according to claim 1, wherein:

the first storage compartment is a freezing storage compartment with an upward opening;

the capillary tube and the evaporator are respectively set as a freezing capillary tube and a freezing evaporator;

the cabinet body further comprises a first air supply device arranged in the cabinet body;

the first air supply device comprises a first air supply channel which is communicated with the freezing storage compartment and the temperature-changing storage compartment, a first air door which is controlled to be conducted or closed, and a first fan which is arranged in the air supply channel;

the refrigerator further comprises a first air return channel which is communicated with the freezing storage compartment and the temperature-changing storage compartment, and the first air return channel and the first air delivery channel are arranged separately.

3. The refrigerator according to claim 1, wherein:

the first storage compartment is set as a freezing storage compartment;

The capillary tube and the evaporator are respectively set as a freezing capillary tube and a freezing evaporator;

the cabinet body further comprises a refrigeration storage compartment which is arranged adjacent to the refrigeration storage compartment in the 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 second air supply device arranged between the freezing storage compartment and the refrigerating storage compartment;

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

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

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.

4. A refrigerator according to claim 3, wherein:

the cold storage and cooling branch comprises a cold storage capillary tube and a cold storage evaporator which are connected through pipelines;

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 includes a second three-way valve coupled to the inlet end of the compressor, the second three-way valve having two inlets and an 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.

5. The refrigerator according to claim 1, 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;

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.

6. A refrigerator according to claim 3, 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;

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.

7. The refrigerator according to claim 3 or 6, wherein: 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.

8. A refrigeration control method of a refrigerator according to any one of claims 1 to 7, characterized in that:

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

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

when the compressor is in a starting state, an auxiliary condenser is communicated between the compressor and the condenser, and the temperature B of the variable-temperature chamber is obtained _SNR ；

When the compressor is in a stop state, starting the compressor, communicating an auxiliary condenser between the compressor and the condenser, and obtaining the temperature B of the variable-temperature chamber _SNR ；

When B is acquired _SNR Heating shutdown temperature BH in temperature-changing storage room _OFF Closing the compressor, wherein BH _OFF Defined as the set heating temperature B in the temperature-changing storage compartment _SET1 On the basis of the temperature threshold T of the shutdown in the temperature-changing storage room _{Heating shutdown} ，BH _OFF ＝B _SET1 +T _{Heating shutdown} ，B _SET ＞0。

9. The refrigeration control method according to claim 8, wherein:

when the compressor is in a stop state, after the compressor 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 At the same time, the compressor is turned off and maintained 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 compressor is repeatedly started and stopped until B _SNR ≥BH _OFF The compressor is turned off.

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

the method for repeatedly starting and stopping the compressor comprises the following steps:

starting the compressor; after the compressor is started, the temperature T is less than or equal to T _OFF Continuing the second preset time T2, or after starting the compressor and continuing the second preset time T3, judging whether T meets T being more than or equal to 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 is set to keep the starting state until T is less than T _ON When T satisfies T < T _ON Closing the compressor and keeping the first preset time t1;

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