Refrigeration system, refrigerator and control method therefor

Abstract

The present application belongs to the technical field of refrigeration, and specifically relates to a refrigeration system, a refrigerator and a control method therefor. The refrigeration system comprises: a refrigeration assembly, comprising a compressor, a condenser, a first evaporator, a second evaporator, a first throttling element and a second throttling element; a refrigeration circulation loop, comprising a main pipeline, and a first refrigerant branch and a second refrigerant branch which are arranged in parallel, wherein the first throttling element and the first evaporator are both arranged in the first refrigerant branch, and the second throttling element is arranged in the second refrigerant branch; and a first valve having a first inlet, a first outlet and a second outlet, wherein the first inlet is in communication with an outlet of the condenser, the first outlet is in communication with the first refrigerant branch, the second outlet is in communication with the second refrigerant branch, and the first outlet and the second outlet each have a fully open state, a throttling state and a closed state. In the present application, the flow rate of a refrigerant in each compartment can be rationally allocated on the basis of different refrigeration requirements, thereby reducing operation energy consumption of the system while achieving rapid cooling.

Description

Refrigeration system, refrigerator and control method thereof

[0001] Cross-reference to related applications

[0002] This application claims priority to and the benefit of the following patent applications, the entire contents of which are incorporated herein by reference:

[0003] Chinese Patent Application No. 202411369309.8, filed on September 27, 2024, entitled “Refrigeration system, refrigerator and control method thereof” with the China National Intellectual Property Office;

[0004] Chinese Patent Application No. 202411369278.6, filed on September 27, 2024, entitled “Refrigeration system, refrigerator and control method thereof” with the China National Intellectual Property Office. TECHNICAL FIELD

[0005] The present application relates to the technical field of refrigeration, and more particularly, to a refrigeration system, a refrigerator and a control method thereof. BACKGROUND

[0006] Double-system or triple-system refrigerators are beneficial to improve the preservation effect of food compared with single-system refrigerators. However, in actual use, the user frequently opens and closes the door, which causes a single compartment or multiple compartments to have refrigeration requirements at the same time. In related technologies, when multiple compartments have refrigeration requirements at the same time, the problem of uneven distribution of refrigerant flow occurs, which causes a certain compartment to be over-cooled or under-cooled, and increases the operating energy consumption. SUMMARY

[0007] The purpose of the present application is to provide a refrigeration system, a refrigerator and a control method thereof, which can reasonably distribute the refrigerant flow of each compartment according to different refrigeration requirements, and reduce the system operating energy consumption while achieving rapid cooling.

[0008] In a first aspect, the application provides a refrigeration system, comprising: a refrigeration assembly comprising a compressor, a condenser, a first evaporator, a second evaporator, a first throttling element and a second throttling element; a refrigeration cycle circuit comprising a main pipeline and a first refrigerant branch and a second refrigerant branch in communication with the main pipeline, the first refrigerant branch and the second refrigerant branch being arranged in parallel, in the flow direction of the refrigerant, the first throttling element and the first evaporator being arranged in the first refrigerant branch in sequence, the second throttling element being arranged in the second refrigerant branch, the outlet of the first evaporator and the outlet of the second throttling element being in communication with the inlet of the compressor, the second evaporator, the compressor and the condenser being arranged in the main pipeline in sequence; and a first valve body arranged at the connection between the first refrigerant branch and the second refrigerant branch and the main pipeline, the first valve body having a first inlet, a first outlet and a second outlet, the first inlet being in communication with the outlet of the condenser, the first outlet being in communication with the first refrigerant branch, the second outlet being in communication with the second refrigerant branch, the first outlet and the second outlet each having a fully open state, a throttling state and a closed state.

[0009] In a second aspect, the application provides a refrigerator, comprising: a cabinet, a first chamber and a second chamber being arranged in the cabinet; the refrigeration system of each embodiment of the application, the first evaporator of the refrigeration system being arranged in the first chamber, the second evaporator being arranged in the second chamber; a sensor assembly for detecting environmental information of the refrigerator, the environmental information comprising the temperature of the first chamber and the temperature of the second chamber; and a controller electrically connected with the sensor assembly, the compressor of the refrigeration system and the first valve body, the controller being configured to confirm the refrigeration requirements of the first chamber and the second chamber according to the environmental information, and control the first valve body and the compressor to operate according to the refrigeration requirements.

[0010] In a third aspect, the application provides a control method of a refrigerator, applied to the refrigerator of each embodiment of the application, the control method comprising: obtaining environmental information of the refrigerator, the environmental information comprising the temperature of the first chamber and the temperature of the second chamber; confirming the refrigeration requirements of the first chamber and the refrigeration requirements of the second chamber according to the environmental information; and controlling the first valve body and the compressor to operate according to the refrigeration requirements.

[0011] According to the refrigeration system, the refrigerator and the control method thereof provided by the embodiments of the application, by arranging the first evaporator and the second evaporator in the refrigeration cycle circuit in a series-parallel manner, and by using the first valve body with on-off and throttling functions in combination with the throttling element, the refrigerant flow of the refrigeration chamber and the freezing chamber can be reasonably distributed according to the operating conditions of the compressor, so that the system operating energy consumption is reduced while the rapid cooling is achieved.

[0012] In a fourth aspect, the application provides a refrigeration system, comprising: an anti-condensation pipe; a refrigeration assembly comprising a compressor, a condenser, a first evaporator, and a second evaporator; a refrigeration cycle circuit comprising a main pipe and a first refrigerant branch, a second refrigerant branch, and a second bypass branch, which are in communication with the main pipe respectively, the first refrigerant branch and the second refrigerant branch are arranged in parallel, the first evaporator is arranged in the first refrigerant branch, an outlet of the first evaporator is in communication with an inlet of the second evaporator, the second evaporator, the compressor, the condenser, and the anti-condensation pipe are arranged in the main pipe in sequence, and the second bypass branch is arranged in parallel with the anti-condensation pipe; and a third valve body arranged at a connection between the first refrigerant branch and the second refrigerant branch and the main pipe, the third valve body has a second inlet, a third inlet, a sixth outlet, and a seventh outlet, the second inlet is in communication with an outlet of the anti-condensation pipe, the third inlet is in communication with the second bypass branch, the sixth outlet is in communication with the first refrigerant branch, the seventh outlet is in communication with the second refrigerant branch, and the sixth outlet and the seventh outlet each have a fully open state, a throttling state, and a closed state, wherein the second inlet can selectively conduct with any one of the sixth outlet and the seventh outlet, or the third inlet can selectively conduct with any one of the sixth outlet and the seventh outlet.

[0013] In a fifth aspect, the application provides a refrigeration system, a refrigerator comprising a first chamber and a freezer chamber, the refrigeration system comprising: an anti-condensation pipe; a refrigeration assembly comprising a compressor, a condenser, a first evaporator, and a second evaporator; a refrigeration cycle circuit comprising a main pipe and a first refrigerant branch, a second refrigerant branch, and a second bypass branch, which are in communication with the main pipe respectively, the first refrigerant branch and the second refrigerant branch are arranged in parallel, the first evaporator is arranged in the first refrigerant branch, the second evaporator is arranged in the second refrigerant branch, an outlet of the first evaporator and an outlet of the second evaporator are in communication with an inlet of the compressor, the compressor, the condenser, and the anti-condensation pipe are arranged in the main pipe, and the second bypass branch is arranged in parallel with the anti-condensation pipe; and a third valve body having a second inlet, a third inlet, a sixth outlet, and a seventh outlet, the second inlet is in communication with an outlet of the anti-condensation pipe, the third inlet is in communication with the second bypass branch, the sixth outlet is in communication with the first refrigerant branch, the seventh outlet is in communication with the second refrigerant branch, and the sixth outlet and the seventh outlet each have a fully open state, a throttling state, and a closed state, wherein the second inlet can selectively communicate with any one of the sixth outlet and the seventh outlet, or the third inlet can selectively conduct with any one of the sixth outlet and the seventh outlet.

[0014] In a sixth aspect, the refrigerator is provided. The refrigerator comprises a cabinet, a freezing compartment and a first compartment arranged in the cabinet, a refrigeration system according to any one of the embodiments of the refrigerator, a first evaporator of the refrigeration system arranged in the first compartment, and a second evaporator arranged in the second compartment, a sensor assembly for detecting environmental information of the refrigerator, and a controller electrically connected with the sensor assembly, a compressor of the refrigeration system and a third valve body, and configured to control the third valve body and the compressor according to the environmental information.

[0015] In a seventh aspect, the control method of the refrigerator is provided. The control method is applied to the refrigerator according to any one of the embodiments of the refrigerator, and comprises: acquiring environmental information of the refrigerator; and controlling a third valve body and a compressor to operate according to the environmental information.

[0016] According to the refrigeration system, the refrigerator and the control method thereof provided by the embodiments of the present application, the first evaporator and the second evaporator are arranged in the refrigeration cycle circuit in a series-parallel or parallel manner, the anti-condensation pipe is arranged in parallel with the second bypass branch, and the two-in and two-out third valve body with on-off and throttling functions is connected with each branch, so that the third valve body and the compressor can be controlled according to the environmental information of the refrigerator. Since only one third valve body is used to balance the anti-condensation management, the cooling speed and the energy-saving operation, the control logic is simple, and the stability of system operation is improved.

[0017] The above description is only a summary of the technical solutions of the present application. In order to enable the technical means of the present application to be more clearly understood, and to be implemented according to the content of the description, and in order to enable the above and other purposes, characteristics and advantages of the present application to be more apparent and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a better understanding of the preferred embodiments, and are not to be considered as limitations on the present application. Moreover, throughout the drawings, like reference numerals refer to similar components. Among them:

[0019] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a better understanding of the preferred embodiments, and are not to be considered as limitations on the present application. Moreover, throughout the drawings, like reference numerals refer to similar components. Among them:

[0020] FIG. 1 is a structural schematic diagram of a refrigeration system according to an embodiment of the present application;

[0021] FIG. 2 is an exploded structural schematic diagram of a first valve body in the refrigeration system shown in FIG. 1;

[0022] FIG. 3 is a structural schematic diagram of a refrigeration system according to another embodiment of the present application;

[0023] FIG. 4 is an exploded structural schematic diagram of a first valve body in the refrigeration system shown in FIG. 3;

[0024] FIG. 5 is a flow chart of a control method of a refrigerator according to an embodiment of the present application;

[0025] FIG. 6 is a detailed flow chart of the control method of the refrigerator according to an embodiment of the present application;

[0026] FIG. 7 is a detailed flow chart of the control method of the refrigerator according to an embodiment of the present application;

[0027] FIG. 8 is a structural schematic diagram of a refrigeration system according to an embodiment of the present application;

[0028] FIG. 9 is an exploded structural schematic diagram of a third valve body in the refrigeration system shown in FIG. 8;

[0029] FIG. 10 is a structural schematic diagram of a refrigeration system according to another embodiment of the present application;

[0030] FIG. 11 is a structural schematic diagram of a refrigerator according to an embodiment of the present application;

[0031] FIG. 12 is a flow chart of a control method of a refrigerator according to an embodiment of the present application;

[0032] FIG. 13 is a detailed flow chart of the control method of the refrigerator according to an embodiment of the present application;

[0033] FIG. 14 is a detailed flow chart of the control method of the refrigerator according to an embodiment of the present application.

[0034] In the drawings: 10, refrigeration system; 1, refrigeration assembly; 11, compressor; 12, condenser; 13, first evaporator; 14, second evaporator; 15, first throttling element; 16, second throttling element; 17, third evaporator; 18, third throttling element; 19, one-way check valve; 2, anti-condensation tube; 3, refrigeration cycle circuit; 30, main pipe; 31, first refrigerant branch; 32, second refrigerant branch; 33, third refrigerant branch; 34, first bypass branch; 33, second bypass branch; 4, first valve body; 40, first inlet; 41, first outlet; 411, first through hole; 412, first arc-shaped groove; 42, second outlet; 421, second through hole; 422, second arc-shaped groove; 43, first valve seat; 44, first valve block; 440, first connecting portion; 441, first notch; 442, second notch; 443, third notch; 45, third outlet; 451, third through hole; 452, third arc-shaped groove; 5, second valve body; 50, second inlet; 51, fourth outlet; 52, fifth outlet; 6, third valve body; 61, second inlet; 62, third inlet; 63, sixth outlet; 631, fourth through hole; 632, fourth arc-shaped groove; 64, seventh outlet; 641, fifth through hole; 642, fifth arc-shaped groove; 65, second valve seat; 66, second valve block; 660, second connecting portion; 661, fourth notch; 662, fifth notch; 7, filter device; 100, refrigerator; 101, first compartment; 102, freezing compartment. DETAILED DESCRIPTION

[0035] Example embodiments of the present application will be described herein below with reference to the accompanying drawings. While example embodiments of the present application are illustrated, it is to be understood that the present application is not limited to the illustrated embodiments. Rather, the present application is intended to cover numerous different forms as long as such forms fall within the scope of the applicable laws and regulations and an appropriate scope of equivalents. Accordingly, the terminology used is for the purpose of describing particular example embodiments only and is not intended to be limiting.

[0036] It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "includes" and / or "containing", "having", "with" and / or "including" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described or illustrated, unless explicitly stated otherwise. It is also to be understood that additional or alternative steps can be employed.

[0037] Although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0038] Spatially relative terms, such as "inner," "outer," "beneath," "below," "lower," "above," "upper," and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Spatially relative terms can be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0039] FIG. 1 is a structural schematic diagram of a refrigeration system according to an embodiment of the present application.

[0040] Referring to FIG. 1, an embodiment of the present application provides a refrigeration system 10, which includes a refrigeration assembly 1, a refrigeration cycle circuit 3, and a first valve body 4. The refrigeration system 10 can be applied to various refrigeration devices such as a refrigerator, a freezer, a cold storage, and the like.

[0041] The refrigeration assembly 1 includes a compressor 11, a condenser 12, a first evaporator 13, a second evaporator 14, a first throttling element 15, and a second throttling element 16. The first throttling element 15 and the second throttling element 16 can be, for example, but are not limited to, capillary tubes.

[0042] The refrigeration cycle circuit 3 comprises a main pipeline 30, and a first refrigerant branch 31 and a second refrigerant branch 32 respectively communicated with the main pipeline 30, the first refrigerant branch 31 and the second refrigerant branch 32 are arranged in parallel, in the flow direction of the refrigerant, the first throttling element 15 and the first evaporator 13 are arranged in the first refrigerant branch 31 in sequence, the second throttling element 16 is arranged in the second refrigerant branch 32, the outlet of the first evaporator 13 and the outlet of the second throttling element 16 are both communicated with the inlet of the second evaporator 14, and the second evaporator 14, the compressor 11 and the condenser 12 are arranged in the main pipeline 30 in sequence.

[0043] The first valve body 4 is arranged at the connection between the first refrigerant branch 31 and the second refrigerant branch 32 and the main pipeline 30, the first valve body 4 has a first inlet 40, a first outlet 41 and a second outlet 42, the first inlet 40 is communicated with the outlet of the condenser 12, the first outlet 41 is communicated with the first refrigerant branch 31, and the second outlet 42 is communicated with the second refrigerant branch 32, the first outlet 41 and the second outlet 42 both have a full opening state, a throttling state and a closed state.

[0044] Taking that the refrigeration system 10 is applied to a refrigerator as an example, for the refrigerator with two or more evaporators, when the refrigerator is just powered on or the refrigerator door is frequently opened and closed by the user, or in a high-temperature environment, the temperature of the first compartment and the second compartment quickly rises. In the related art, if the first compartment and the second compartment have a rapid refrigeration request at the same time, a large-flow throttling element is usually used to cool the second compartment, and a small-flow throttling element is used to cool the first compartment, so that the second compartment quickly cools to the set temperature, and the refrigeration demand of the first compartment is greater than that of the second compartment, and the problem of uneven distribution of refrigerant flow occurs, and the refrigeration demand of the second compartment and the first compartment cannot be reasonably distributed, and the operation energy consumption is increased.

[0045] In addition, in the related art, the valve body for the refrigerator mostly only has on-off function without throttling function, or an electronic expansion valve is used, which has throttling function, but is usually one inlet and one outlet, and cannot realize flow path switching.

[0046] To this end, in the embodiment of the present application, the first valve body 4 has a first inlet 40, a first outlet 41 and a second outlet 42, the first inlet 40 is communicated with the outlet of the condenser 12, the first outlet 41 is communicated with the first refrigerant branch 31, the second outlet 42 is communicated with the second refrigerant branch 32, the first throttling element 15 and the first evaporator 13 are arranged in the first refrigerant branch 31, and the second throttling element 16 is arranged in the second refrigerant branch 32, so that the first evaporator 13 and the second evaporator 14 are arranged in the refrigeration cycle circuit 3 in a series-parallel manner, the first evaporator 13 is used for refrigerating the first compartment, and the second evaporator 14 is used for refrigerating the second compartment. When the first compartment has a refrigeration demand, the first outlet 41 of the first valve body 4 is opened, and the second outlet 42 is closed. The high-temperature and high-pressure gas discharged from the compressor 11 becomes low-temperature and high-pressure liquid after being condensed and radiated by the condenser 12, and then flows through the first valve body 4, and then becomes low-temperature and low-pressure liquid after being hindered, throttled and decompressed by the first throttling element 15. The low-temperature and low-pressure liquid is evaporated and absorbs heat in the first evaporator 13, and then becomes part of low-temperature and low-pressure gas and part of low-temperature and low-pressure liquid. The low-temperature and low-pressure liquid enters the second evaporator 14 to be evaporated and absorb heat, and then becomes low-temperature and low-pressure gas after taking away the heat of the second compartment, and then flows back to the compressor 11 to be compressed into high-temperature and high-pressure gas, thereby completing a refrigeration cycle. When only the second compartment has a refrigeration demand, the second outlet 42 of the first valve body 4 is opened. The high-temperature and high-pressure gas discharged from the compressor 11 becomes low-temperature and high-pressure liquid after being condensed and radiated by the condenser 12, and then flows through the first valve body 4, and then becomes low-temperature and low-pressure liquid after being hindered, throttled and decompressed by the second throttling element 16. The low-temperature and low-pressure liquid is evaporated and absorbs heat in the second evaporator 14, and then becomes low-temperature and low-pressure gas after taking away the heat of the second compartment, and then flows back to the compressor 11 to be compressed into high-temperature and high-pressure gas, thereby completing a refrigeration cycle.

[0047] The first outlet 41 and the second outlet 42 of the first valve body 4 each have a full opening state, a throttling state and a closed state, and have a throttling function in addition to the switching function of the first refrigerant branch 31 and the second refrigerant branch 32. At this time, the first outlet 41 and the second outlet 42 can be switched between the full opening state and the throttling state according to the operating frequency of the compressor 11, and in combination with the first throttling element 15 or the second throttling element 16, four different flow combinations can be achieved. For example, when the first chamber and the second chamber have refrigeration requirements at the same time, if the operating frequency of the compressor 11 is large, the first outlet 41 can be controlled to be in the full opening state to achieve large-flow cooling, and if the operating frequency of the compressor 11 is small, the first outlet 41 can be controlled to be in the throttling state to achieve small-flow energy-saving refrigeration. For example, when only the second chamber has refrigeration requirements, the second outlet 42 can be controlled to be in the full opening state or the throttling state according to the operating frequency of the compressor 11 to achieve large-flow rapid refrigeration or small-flow energy-saving refrigeration. Thus, the refrigerant flow can be reasonably distributed according to the refrigeration requirements of the second chamber and the first chamber, rapid cooling can be achieved, and the system operating power consumption can be reduced.

[0048] The refrigeration system 10 provided by the embodiment of the present application can reasonably distribute the refrigerant flow of the first chamber and the second chamber according to the operating conditions of the compressor 11 by arranging the first evaporator 13 and the second evaporator 14 in a series-parallel manner in the refrigeration cycle circuit 3 and using the combination of the valve body having the on-off and throttling functions and the throttling element, so that rapid cooling can be achieved and the system operating energy consumption can be reduced.

[0049] FIG. 2 is an exploded structural schematic view of the first valve body in the refrigeration system shown in FIG. 1.

[0050] In some embodiments, the first valve body 4 comprises a first valve seat 43 and a first valve block 44 coaxially arranged, the first valve seat 43 is provided with a first inlet 40 on the bottom surface or side surface thereof, and the end surface of the first valve seat 43 is provided with a first outlet 41 and a second outlet 42 which are circumferentially spaced apart, the first outlet 41 comprises a first through hole 411 and a first arc-shaped groove 412 which communicates with the first through hole 411, and the second outlet 42 comprises a second through hole 421 and a second arc-shaped groove 422 which communicates with the second through hole 421. The first valve block 44 comprises a first connecting portion 440 provided with a first notch 441 and a second notch 442, the first connecting portion 440 is in abutment with the end surface of the first valve seat 43 and can rotate relative to the first valve seat 43, so that the first notch 441 selectively communicates with any one of the first through hole 411 and the first arc-shaped groove 412, and the second notch 442 selectively communicates with any one of the second through hole 421 and the second arc-shaped groove 422, wherein, when the first notch 441 communicates with the first through hole 411, the first outlet 41 is in a fully open state; when the first notch 441 communicates with the first arc-shaped groove 412, the first outlet 41 is in a throttling state; when the second notch 442 communicates with the second through hole 421, the second outlet 42 is in a fully open state; when the second notch 442 communicates with the second arc-shaped groove 422, the second outlet 42 is in a throttling state; when the remaining part of the first connecting portion 440 except the first notch 441 and the second notch 442 covers the first outlet 41, the first outlet 41 is in a closed state; and when the remaining part of the first connecting portion 440 except the first notch 441 and the second notch 442 covers the second outlet 42, the second outlet 42 is in a closed state.

[0051] Referring to FIG. 2, the end surface of the first valve seat 43 is a flat abutment surface, and the first valve block 44 can be in abutment with the end surface of the first valve seat 43 and rotate at an angle. The first inlet 40 of the first valve seat 43 is arranged on the side surface or the bottom surface of the first valve seat 43, and the first outlet 41 is arranged on the end surface of the first valve seat 43 and is opened on a circumference with the center axis of the first valve seat 43 as the center and a certain length as the radius. The first valve body 4 further comprises a first inlet pipe and a first outlet pipe fixedly connected with the first valve seat 43, the first inlet pipe communicates with the first inlet 40, and the first outlet pipe communicates with the first outlet 41, and the first inlet pipe and the first outlet pipe respectively communicate with the refrigeration cycle circuit 3 to meet the needs of the refrigeration system 10.

[0052] The first valve body 4 can further include a control unit and a motor (not shown in the figure), the control unit controls the rotor of the motor to drive the first valve block 44 to rotate relative to the first valve seat 43, the first connecting portion 440 of the first valve block 44 is used for rotating fit with the end face of the first valve seat 43, when the first connecting portion 440 rotates to cover the first outlet 41 of the first valve seat 43, the first outlet 41 is in a closed state, and the refrigerant cannot flow out of the first outlet 41. Conversely, when the first connecting portion 440 rotates to not cover the first outlet 41, if the first gap 441 corresponds to the first through hole 411 of the first outlet 41, at this time, the first outlet 41 is in a fully open state, and the refrigerant directly flows out from the first through hole 411; if the first gap 441 corresponds to the first arc-shaped groove 412 of the first outlet 41, at this time, the first outlet 41 is in a throttling state, the refrigerant enters the first through hole 411 and then flows out from the first arc-shaped groove 412, and the positional relationship and conduction relationship between the second outlet 42 and the second gap 442 are similar and will not be described herein.

[0053] It can be understood that the throttling flow of the first outlet 41 depends on the longitudinal sectional area formed by the width and depth of the first arc-shaped groove 412, and the throttling flow of the second outlet 42 depends on the longitudinal sectional area formed by the width and depth of the second arc-shaped groove 422. The angles of the first gap 441 and the second gap 442 can be the same or different, and the angles of the first gap 441 and the second gap 442 in the circumferential direction are designed according to specific application scenarios and control logic, which will not be described herein.

[0054] It can be understood that the first valve body 4 can also have other structural forms as long as the functions of on-off and throttling can be realized, which is not limited herein.

[0055] In some embodiments, the refrigeration cycle circuit 3 further includes a first bypass branch 34, and the refrigeration system 10 further includes an anti-condensation pipe 2 and a second valve body 5, the anti-condensation pipe 2 is arranged between the first valve body 4 and the second valve body 5, and the first bypass branch 34 is arranged in parallel with the anti-condensation pipe 2, the second valve body 5 has a second inlet 50, a fourth outlet 51 and a fifth outlet 52, the second inlet 50 is communicated with the outlet of the condenser 12, the fourth outlet 51 is communicated with the anti-condensation pipe 2, and the fifth outlet 52 is communicated with the first bypass branch 34.

[0056] The anti-condensation pipe 2 can be arranged in the interlayer of the door frame of the refrigerator, or at each cross beam and vertical beam of the door frame, and the high-temperature liquid refrigerant in the anti-condensation pipe 2 flows through each cross beam and vertical beam to heat the surface thereof and balance the temperature difference between the surface and the environment, thereby achieving anti-condensation. The anti-condensation pipe 2 can be a plastic pipe body for circulating refrigerant and other refrigerants, and has high corrosion resistance, thereby prolonging the service life.

[0057] When the ambient temperature of the refrigerator is low or the ambient relative humidity is large, the fourth outlet 51 of the second valve body 5 is opened and the fifth outlet 52 is closed, and the anti-condensation control is performed through the anti-condensation pipe 2; when the ambient temperature of the refrigerator is high or the ambient relative humidity is small, the fourth outlet 51 of the second valve body 5 is closed and the fifth outlet 52 is opened, and the energy-saving operation is performed through the first bypass branch 34. The refrigerant is guided to different pipelines by the second valve body 5 under different environmental parameters, heat loss is reduced, and precise anti-condensation management is realized.

[0058] The refrigerator provided by the embodiments of the present application comprises a cabinet, the refrigeration system 10, a sensor assembly, and a controller.

[0059] The first chamber and the second chamber are arranged in the cabinet, the first evaporator 13 of the refrigeration system 10 is arranged in the first chamber to perform refrigeration, and the second evaporator 14 is arranged in the second chamber; the sensor assembly is used for detecting the environmental information of the refrigerator, and the environmental information comprises the temperature of the first chamber and the temperature of the second chamber; the controller is electrically connected with the sensor assembly, the compressor 11, and the first valve body 4, and is configured to confirm the refrigeration requirements of the first chamber and the second chamber according to the environmental information, and control the first valve body 4 and the compressor 11 to operate according to the refrigeration requirements.

[0060] FIG. 3 is a structural schematic diagram of a refrigeration system according to another embodiment of the present application.

[0061] In some embodiments, the refrigeration assembly 1 further comprises a third evaporator 17 and a third throttling element, and the refrigeration cycle circuit 3 further comprises a third refrigerant branch 33 in communication with the main pipeline 30, the third refrigerant branch 33 is arranged in parallel with the second refrigerant branch 32, and the third throttling element and the third evaporator 17 are sequentially arranged in the third refrigerant branch 33 in the flow direction of the refrigerant. The first valve body 4 further has a third outlet 45, the third outlet 45 is in communication with the third refrigerant branch 33, and the third outlet 45 has a fully open state, a throttling state, and a closed state.

[0062] Referring to FIG. 3, the refrigeration system 10 in the embodiment is used in a multi-system refrigerator having a first compartment, a second compartment and a third compartment, and is similar in structure to the refrigeration system 10 of the dual-system refrigerator, except that the first valve body 4 has a first inlet 40, a first outlet 41, a second outlet 42 and a third outlet 45, and the first inlet 40, the first outlet 41, the second outlet 42 and the third outlet 45 all have a fully open state, a throttling state and a closed state, and in addition to the switching function of the first refrigerant branch 31, the second refrigerant branch 32 and the third refrigerant branch 33, also have a throttling function. At this time, the first outlet 41, the second outlet 42 and the third outlet 45 can be switched between the fully open state and the throttling state according to the operating frequency of the compressor 11, and in combination with the first throttling element 15, the second throttling element 16 and the third throttling element, six different flow combinations can be realized. When different compartments have refrigeration requirements at the same time, the specific compartment can be determined according to the priority and refrigerated. For example, when the third compartment has a refrigeration requirement, if the operating frequency of the compressor 11 is relatively large, the third outlet 45 can be controlled to be in the fully open state to achieve large-flow cooling, and if the operating frequency of the compressor 11 is relatively small, the third outlet 45 can be controlled to be in the throttling state to achieve small-flow energy-saving refrigeration; other cases such as only the second compartment has a refrigeration requirement or only the first compartment has a refrigeration requirement are similar in working principle to the refrigeration system 10 of the dual-system refrigerator, and will not be described again. Thus, the refrigerant flow can be reasonably distributed according to the refrigeration requirements of the second compartment, the first compartment and the third compartment, so as to achieve rapid cooling while reducing system operating power consumption.

[0063] In addition, the first refrigerant branch 31 and the third refrigerant branch 33 are also respectively provided with a one-way check valve 19, which is arranged on the outlet side of the first evaporator 13 and the third evaporator 17 respectively, for preventing the backflow of refrigerant.

[0064] FIG. 4 is an exploded structural schematic view of the first valve body in the refrigeration system shown in FIG. 3.

[0065] In some embodiments, the first valve body 4 includes a first valve seat 43 and a first valve block 44 arranged coaxially, the end face of the first valve seat 43 is provided with a first inlet 40, a first outlet 41, a second outlet 42 and a third outlet 45 distributed in a circumferential direction, the first outlet 41 includes a first through hole 411 and a first arc-shaped groove 412 in communication with the first through hole 411, the second outlet 42 includes a second through hole 421 and a second arc-shaped groove 422 in communication with the second through hole 421, and the third outlet 45 includes a third through hole 451 and a third arc-shaped groove 452 in communication with the third through hole 451.

[0066] Referring to FIG. 4, the first valve block 44 includes a first connecting portion 440 having a first notch 441, a second notch 442 and a third notch 443, the first connecting portion 440 is attached to the end face of the first valve seat 43 and can rotate relative to the first valve seat 43, so that the first notch 441 can selectively communicate with any one of the first through hole 411 and the first arc-shaped groove 412, the second notch 442 can selectively communicate with any one of the second through hole 421 and the second arc-shaped groove 422, and the third notch 443 can selectively communicate with any one of the third through hole 451 and the third arc-shaped groove 452; wherein, when the first notch 441 communicates with the first through hole 411, the first outlet 41 is in a fully open state; when the first notch 441 communicates with the first arc-shaped groove 412, the first outlet 41 is in a throttling state; when the second notch 442 communicates with the second through hole 421, the second outlet 42 is in a fully open state; when the second notch 442 communicates with the second arc-shaped groove 422, the second outlet 42 is in a throttling state; when the third notch 443 communicates with the third through hole 451, the third outlet 45 is in a fully open state; when the third notch 443 communicates with the third arc-shaped groove 452, the third outlet 45 is in a throttling state; when the remaining parts of the first connecting portion 440 except the first notch 441, the second notch 442 and the third notch 443 cover the first outlet 41, the second outlet 42 and the third outlet 45 respectively, the first outlet 41, the second outlet 42 and the third outlet 45 correspondingly are in a closed state respectively. The angles of the first notch 441, the second notch 442 and the third notch 443 can be the same or different, and the angles of the first notch 441, the second notch 442 and the third notch 443 in the circumferential direction are designed according to specific application scenarios and control logic, which will not be described here.

[0067] In this embodiment, the working principle of the first valve body 4 with one inlet and three outlets is similar to that of the first valve body 4 with one inlet and two outlets, which will not be described here.

[0068] It can be understood that the first valve body 4 can also have other structural forms as long as it can realize the functions of on-off and throttling, which is not limited here.

[0069] In some embodiments, the refrigeration cycle circuit 3 further includes a first bypass branch 34, and the refrigeration system 10 further includes an anti-condensation pipe 2 and a second valve body 5, the anti-condensation pipe 2 is arranged between the first valve body 4 and the second valve body 5, and the first bypass branch 34 is arranged in parallel with the anti-condensation pipe 2, the second valve body 5 has a second inlet 50, a fourth outlet 51 and a fifth outlet 52, the second inlet 50 communicates with the outlet of the condenser 12, the fourth outlet 51 communicates with the anti-condensation pipe 2, and the fifth outlet 52 communicates with the first bypass branch 34.

[0070] The refrigeration system 10 in the embodiment is used for a multi-system refrigerator having a first compartment, a second compartment and a third compartment. When the ambient temperature of the refrigerator is low or the ambient relative humidity is large, the fourth outlet 51 of the second valve body 5 is opened and the fifth outlet 52 is closed, and the anti-condensation control is performed through the anti-condensation pipe 2. When the ambient temperature of the refrigerator is high or the ambient relative humidity is small, the fourth outlet 51 of the second valve body 5 is closed and the fifth outlet 52 is opened, and the energy-saving operation is performed through the first bypass branch 34. The refrigerant is guided to different pipelines under different ambient parameter conditions through the second valve body 5, heat loss is reduced, and precise anti-condensation management is realized.

[0071] The refrigerator provided in the embodiments of the present application comprises a cabinet, the refrigeration system 10 provided in the embodiments of the present application, a sensor assembly and a controller. The cabinet is provided with a first compartment, a second compartment and a third compartment. The refrigeration system 10 comprises a first evaporator 13, a second evaporator 14 and a third evaporator 17. The first evaporator 13 is arranged to cool the first compartment. The second evaporator 14 is arranged to cool the second compartment. The third evaporator 17 is arranged to cool the third compartment. The ambient information further comprises the temperature of the third compartment. The controller is further configured to confirm the cooling demand of the third compartment according to the ambient information, and control the first valve body 4 and the compressor 11 to operate according to the cooling demand.

[0072] FIG. 5 is a flow chart of a control method of a refrigerator according to an embodiment of the present application.

[0073] Referring to FIG. 5, the control method of the refrigerator provided in the embodiments of the present application is applied to the refrigerator provided in the embodiments of the present application. The control method comprises the following steps S1-S3.

[0074] Step S1: Obtain the ambient information of the refrigerator. The ambient information comprises the temperature of the first compartment and the temperature of the second compartment.

[0075] Step S2: Determine the cooling demand of the first compartment and the cooling demand of the second compartment according to the ambient information.

[0076] Step S3: Control the first valve body 4 and the compressor 11 to operate according to the cooling demand.

[0077] FIG. 6 is a detailed flow chart of a control method of a refrigerator according to an embodiment of the present application.

[0078] Referring to FIG. 6, in some embodiments, step S3, controlling the first valve body 4 and the compressor 11 to operate according to the cooling demand comprises:

[0079] Step S31: According to the cooling demand of only the second compartment, control the first outlet 41 of the first valve body 4 to be in a closed state.

[0080] Step S32: According to the rotation speed of the compressor 11 being greater than the first rotation speed threshold, the second outlet 42 of the first valve body 4 is controlled to be in a fully open state.

[0081] Step S33: According to the rotation speed of the compressor 11 being less than or equal to the first rotation speed threshold, the second outlet 42 of the first valve body 4 is controlled to be in a throttling state.

[0082] In some embodiments, the step S3 of controlling the first valve body 4 and the compressor 11 to operate according to the refrigeration demand comprises:

[0083] Step S34: According to there being a refrigeration demand in the first chamber, the second outlet 42 of the first valve body 4 is controlled to be in a closed state.

[0084] Step S35: According to the rotation speed of the compressor 11 being greater than the second rotation speed threshold, the first outlet 41 of the first valve body 4 is controlled to be in a fully open state.

[0085] Step S36: According to the rotation speed of the compressor 11 being less than or equal to the second rotation speed threshold, the first outlet 41 of the first valve body 4 is controlled to be in a throttling state.

[0086] The control method of the refrigerator provided by the embodiments of the present application can reasonably distribute the refrigerant flow of the first chamber and the second chamber according to the operating condition of the compressor 11 by arranging the first evaporator 13 for refrigerating the first chamber and the second evaporator 14 for refrigerating the second chamber in the refrigeration cycle circuit 3 in a series-parallel manner, and by using the first valve body 4 with on-off and throttling functions in combination with the throttling element, so as to realize rapid cooling while reducing the system operating energy consumption.

[0087] In some embodiments, the refrigeration system 10 of the refrigerator further comprises an anti-condensation pipe 2, a second valve body 5, and a first bypass branch 34, the anti-condensation pipe 2 is arranged between the first valve body 4 and the second valve body 5, and the first bypass branch 34 is arranged in parallel with the anti-condensation pipe 2, the environmental information further comprises the environmental temperature or the environmental relative humidity of the refrigerator, and the control method further comprises:

[0088] Step S41: According to the environmental temperature being less than or equal to an environmental temperature threshold T1, or according to the environmental relative humidity being less than or equal to a humidity threshold Th1, the fourth outlet 51 of the second valve body 5 is controlled to be in an open state and the fifth outlet 52 is controlled to be in a closed state.

[0089] Step S42: According to the environmental temperature being greater than the environmental temperature threshold, or according to the environmental relative humidity being greater than the humidity threshold, the fifth outlet 52 of the second valve body 5 is controlled to be in an open state and the fourth outlet 51 is controlled to be in a closed state.

[0090] In this embodiment, the refrigerant is made to flow to different pipelines under different environmental parameter conditions by the second valve body 5, reducing heat loss, thereby realizing precise anti-condensation management.

[0091] In the related art, the general measure taken for the problem of rapid cooling of the refrigerator is to increase the power of the compressor 11, thereby increasing the heat exchange amount. This method will increase the system pressure and increase the system load, causing the service life of the compressor 11 to be shortened, the reliability to be reduced, and the like. Therefore, in the embodiments of the present application, the temperature of each chamber is monitored by the sensor assembly. When the temperature exceeds the chamber temperature threshold value, the first valve body 4 is controlled to switch to the large-flow passage, the refrigerant amount is increased in a manner to rapidly cool, and after the chamber temperature is ensured to be reduced to the set threshold value, the small-flow passage is switched, thereby ensuring normal operation of the equipment. In this way, the energy consumption of the equipment is not affected, and the purpose of rapid cooling is achieved.

[0092] In some embodiments, step S3, controlling the first valve body 4 and the compressor 11 to operate according to the refrigeration demand includes:

[0093] Step S31': according to the refrigeration demand of only the second chamber, controlling the first outlet 41 of the first valve body 4 to be in a closed state;

[0094] According to the temperature of the second chamber being between the first temperature threshold value and the second temperature threshold value, the speed of the compressor 11 is controlled to remain at the current first speed, and the second outlet 42 of the first valve body 4 is controlled to be in a fully open state, wherein the second temperature threshold value is greater than the first temperature threshold value;

[0095] According to the temperature of the second chamber being greater than the second temperature threshold value, the speed of the compressor 11 is controlled to be a second speed, and the second outlet 42 of the first valve body 4 is controlled to be in a fully open state, wherein the second speed is greater than the first speed;

[0096] According to the temperature of the second chamber being less than the first temperature threshold value, the speed of the compressor 11 is controlled to be the first speed, and the second outlet 42 of the first valve body 4 is controlled to be in a throttling state.

[0097] In the embodiment, the first temperature threshold is t1, the second temperature threshold is t2, and t2>t1, the first rotating speed is f1, and the second rotating speed is f2, and f2>f1. When only the second chamber has a refrigeration demand, the first outlet 41 of the first valve body 4 is controlled to be in a closed state. The temperature T1 of the second chamber is detected by the sensor assembly. If t1≤T1≤t2, the rotating speed of the compressor 11 is controlled to remain in the original gear (i.e., the first rotating speed), and the second outlet 42 of the first valve body 4 is controlled to be in a fully open state for rapid cooling; if T1>t2, the second outlet 42 is in a fully open state, and the compressor 11 is in a gear-up process (i.e., the second rotating speed), until t1≤T1≤t2, the compressor 11 is downshifted; if T1<t1, the compressor 11 is restored to the original gear (i.e., the first rotating speed), and the second outlet 42 is in a throttling state, realizing energy-saving operation, avoiding problems such as reduced service life and increased energy consumption caused by long-term gear-up operation of the compressor 11 due to rapid cooling.

[0098] In some embodiments, step S3, controlling the first valve body 4 and the compressor 11 to operate according to the refrigeration demand comprises:

[0099] Step S32’: according to the temperature of the second chamber being less than the difference between the first temperature threshold and the temperature variable and the temperature of the first chamber being greater than the third temperature threshold, the second outlet 42 of the first valve body 4 is controlled to be in a closed state;

[0100] According to the temperature of the first chamber being between the third temperature threshold and the fourth temperature threshold, the rotating speed of the compressor 11 is controlled to remain in the current first rotating speed, and the first outlet 41 of the first valve body 4 is controlled to be in a fully open state, wherein the fourth temperature threshold is greater than the third temperature threshold;

[0101] According to the temperature of the first chamber being greater than the fourth temperature threshold, the rotating speed of the compressor 11 is controlled to be the second rotating speed, and the first outlet 41 of the first valve body 4 is controlled to be in a fully open state;

[0102] According to the temperature of the first chamber being less than the third temperature threshold, the rotating speed of the compressor 11 is controlled to be the first rotating speed, and the first outlet 41 of the first valve body 4 is controlled to be in a throttling state;

[0103] According to the temperature of the first chamber being less than the difference between the third temperature threshold and the temperature variable, and the temperature of the second chamber being between the first temperature threshold and the second temperature threshold, the first outlet 41 of the first valve body 4 is controlled to be closed and the second outlet 42 is controlled to be in a fully open state.

[0104] In this embodiment, the third temperature threshold is t3, the fourth temperature threshold is t4, and the temperature variable is AT, the size of which is set according to the use requirement. After the cooling of the second chamber is completed, it is determined whether the first chamber needs to be cooled rapidly. The temperature T2 of the first chamber is detected by the sensor assembly. If t3≤T2≤t4, the speed of the compressor 11 is maintained at the original gear (i.e., the first speed), and the first outlet 41 of the first valve body 4 is in a fully open state for rapid cooling. If T2>t4, the first outlet 41 is in a fully open state, and the compressor 11 is upshifted (i.e., the second speed), until t3≤T2≤t4, and the compressor 11 returns to the original gear (i.e., the first speed). If T2<t3, the compressor 11 is maintained at the original gear (i.e., the first speed), and the first outlet 41 is in a throttling state, realizing energy-saving operation and avoiding problems such as reduced service life and increased energy consumption caused by long-term upshift operation of the compressor 11 due to rapid cooling. In addition, after the cooling of the first chamber is completed, the first outlet 41 of the first valve body 4 is closed, and it is determined whether the second chamber has the possibility of temperature rise. If t1≤T1≤t2-△T, the second outlet 42 of the first valve body 4 is in a fully open state for rapid cooling, otherwise the second outlet 42 is in a throttling state for regular refrigeration. The purpose of setting AT is to avoid the temperature rise of the first chamber and the start of refrigeration again during the subsequent cooling of the second chamber, so that the machine cannot be stopped.

[0105] In some embodiments, step S3, controlling the operation of the first valve body 4 and the compressor 11 according to the refrigeration requirement includes:

[0106] Step S33’: when the first chamber and the second chamber both have refrigeration requirements, the second outlet 42 of the first valve body 4 is controlled to be in a closed state;

[0107] According to the temperature of the first chamber being between the third temperature threshold and the fourth temperature threshold, the speed of the compressor 11 is maintained at the current first speed, and the first outlet 41 of the first valve body 4 is controlled to be in a fully open state, and the fourth temperature threshold is greater than the third temperature threshold;

[0108] According to the temperature of the first chamber being greater than the fourth temperature threshold, the speed of the compressor 11 is controlled to be the second speed, and the first outlet 41 of the first valve body 4 is controlled to be in a fully open state, wherein the second speed is greater than the first speed;

[0109] According to the temperature of the first chamber being less than the third temperature threshold, the speed of the compressor 11 is controlled to be the first speed, and the first outlet 41 of the first valve body 4 is controlled to be in a throttling state;

[0110] According to the temperature of the first chamber being less than the difference between the third temperature threshold and the temperature variable and the temperature of the second chamber being greater than the first temperature threshold, the first outlet 41 of the first valve body 4 is controlled to be in a closed state;

[0111] According to the temperature of the second chamber being between the first temperature threshold and the second temperature threshold, the rotation speed of the compressor 11 is controlled to keep the current first rotation speed, and the second outlet 42 of the first valve body 4 is controlled to be in the fully open state, wherein the second temperature threshold is greater than the first temperature threshold;

[0112] According to the temperature of the second chamber being greater than the second temperature threshold, the rotation speed of the compressor 11 is controlled to be the second rotation speed, and the second outlet 42 of the first valve body 4 is controlled to be in the fully open state;

[0113] According to the temperature of the second chamber being less than the difference between the first temperature threshold and the temperature variable, the rotation speed of the compressor 11 is controlled to be the first rotation speed, and the second outlet 42 of the first valve body 4 is controlled to be in the throttling state;

[0114] According to the temperature of the first chamber being greater than the third temperature threshold, the first outlet 41 of the first valve body 4 is controlled to be in the fully open state and the second outlet 42 is controlled to be in the closed state.

[0115] In the embodiment, the second chamber and the first chamber both have refrigeration demand, the first chamber is cooled quickly first, and then the second chamber is cooled quickly, wherein the way of cooling the first chamber or the second chamber quickly is the same as the foregoing, and will not be described herein again. Before the compressor 11 is stopped, it is checked again whether the temperature of the first chamber returns to be greater than the third temperature threshold t3, if yes, the first outlet 41 is in the fully open state, and the large flow cooling is adopted until the temperature of the first chamber returns to be less than the third temperature threshold t3, then the first outlet 41 is controlled to be in the throttling state to perform the normal refrigeration, if the temperature of the first chamber is less than the third temperature threshold t3, the normal refrigeration is directly restored.

[0116] The control method of the refrigerator in the embodiment of the application, by setting the threshold range for the temperature of the first chamber and the temperature of the second chamber respectively, when the temperature of the first chamber or the temperature of the second chamber is in the respective threshold range, the compressor 11 is controlled to keep the current rotation speed for a period of time, and the large flow is adopted to cool quickly, if the temperature can be cooled quickly, the rotation speed of the compressor is downshifted, if the temperature cannot be cooled quickly, the rotation speed of the compressor is upshifted, thereby avoiding the problems of reduced service life and increased energy consumption caused by long-term upshift of the compressor 11 due to quick cooling.

[0117] It should be noted that the first temperature threshold t1, the second temperature threshold t2, the third temperature threshold t3 and the fourth temperature threshold t4 in the embodiment are not fixed values, the first rotation speed and the second rotation speed can correspond to different gears of the compressor 11 in different embodiments, and can be adjusted according to different products and use environments.

[0118] FIG. 7 is a detailed flow block diagram of the control method of the refrigerator according to an embodiment of the application.

[0119] Referring to FIG. 7, in some embodiments, the refrigerator further comprises a third chamber, and the refrigeration system 10 further comprises a third evaporator 17 for refrigerating the third chamber, and the step S3 of controlling the first valve body 4 and the compressor 11 to operate according to the refrigeration requirement comprises:

[0120] Step S31: according to the refrigeration requirement of only the second chamber, the first outlet 41 of the first valve body 4 is controlled to be in a closed state;

[0121] Step S32: according to the rotation speed of the compressor 11 being greater than a first rotation speed threshold, the second outlet 42 of the first valve body 4 is controlled to be in a fully open state; according to the rotation speed of the compressor 11 being less than or equal to the first rotation speed threshold, the second outlet 42 of the first valve body 4 is controlled to be in a throttling state;

[0122] Step S31”: when the first chamber has no refrigeration requirement, the first outlet 41 and the second outlet 42 of the first valve body 4 are controlled to be in a closed state;

[0123] Step S32”: according to the rotation speed of the compressor 11 being greater than a third rotation speed threshold, the third outlet 45 of the first valve body 4 is controlled to be in a fully open state; according to the rotation speed of the compressor 11 being less than or equal to the third rotation speed threshold, the third outlet 45 of the first valve body 4 is controlled to be in a throttling state;

[0124] Step S34”: when the first chamber and the third chamber both have refrigeration requirements, the second outlet 42 of the first valve body 4 is controlled to be in a closed state, and the first outlet 41 and the third outlet 45 are both controlled to be in a fully open state.

[0125] In some embodiments, the step S3 of controlling the first valve body 4 and the compressor 11 to operate according to the refrigeration requirement further comprises:

[0126] Step S35”: when only the first chamber has a refrigeration requirement, the second outlet 42 and the third outlet 45 of the first valve body 4 are controlled to be in a closed state;

[0127] Step S36”: according to the rotation speed of the compressor 11 being greater than a second rotation speed threshold, the first outlet 41 of the first valve body 4 is controlled to be in a fully open state; according to the rotation speed of the compressor 11 being less than or equal to the second rotation speed threshold, the first outlet 41 of the first valve body 4 is controlled to be in a throttling state.

[0128] In the embodiment, the refrigerator comprises a first chamber, a second chamber and a third chamber. When the second chamber alone requests refrigeration, it is first detected whether the first chamber has a request. If there is no request, it means that the third chamber has a request or the second chamber and the third chamber both have requests. At this time, only the third outlet 45 is turned on to run for a period of time, and then it is judged whether the rotating speed of the compressor 11 is greater than the third rotating speed threshold f3. If yes, the heat load is large at this time, and the third outlet 45 is in a full opening state. Otherwise, the third outlet 45 is in a throttling state. In this way, the precise cooling function of the refrigerator can be realized when the chambers have refrigeration requirements, and the product energy efficiency is improved.

[0129] It should be noted that the first rotating speed threshold f1, the second rotating speed threshold f2 and the third rotating speed threshold f3 in the embodiment are not fixed values, and can be adjusted according to different products and use environments.

[0130] In some embodiments, the control method of the refrigerator further comprises:

[0131] Step S51: opening the first valve body 4 before the compressor 11 is started to run, and controlling the first outlet 41 and / or the second outlet 42 to be in a throttling state;

[0132] Step S52: closing the first valve body 4 after the compressor 11 is stopped.

[0133] Since the first valve body 4 is started at the same time as the compressor 11, the system pipeline has a pressure difference and the exhaust pressure of the compressor 11 is large, which will impact the first valve body 4, thereby reducing the service life of the first valve body 4. Therefore, in the embodiment, the first valve body 4 is opened in advance before the compressor 11 is started to run for a preset time period, which can be 30S for example. That is, after the first valve body 4 is opened, the compressor 11 is started after a delay of 30S, and at least one of the first outlet 41 and the second outlet 42 of the first valve body 4 is controlled to be in a throttling state. On the one hand, the system pressure can be balanced to avoid damage due to excessive pressure at the moment of starting. On the other hand, the refrigerant flow is saved, and the system power consumption is reduced. When the compressor 11 is in a stopped state, the first valve body 4 is closed again to maintain the pressure difference between the condenser 12 and each evaporator, so as to avoid the refrigerant in the condenser 12 from being vaporized to absorb heat from the outside due to the reduction of pressure, thereby reducing the system energy loss and further achieving the energy saving effect.

[0134] Therefore, the control method of the refrigerator in each embodiment of the application can match the appropriate flow through the first valve body 4 and each throttling element according to the changes of environmental information and other parameters, reasonably distribute the refrigerant flow of the first chamber and the second chamber according to the operating conditions of the compressor 11, and reduce the system operating energy consumption while achieving rapid cooling.

[0135] FIG. 8 is a structural schematic diagram of a refrigeration system 10 according to an embodiment of the application.

[0136] Referring to FIG. 8, the embodiment of the present application provides a refrigeration system 10, a refrigerator including a first compartment and a freezer compartment, the refrigeration system 10 including a refrigeration assembly 1, an anti-condensation pipe 2, a refrigeration cycle circuit 3 and a third valve body 6. The refrigeration system 10 can be applied to various refrigeration devices such as a refrigerator, a freezer, a cold storage and the like. For the convenience of description, the embodiments of the present application take the refrigeration system 10 applied to a refrigerator as an example for description. The refrigeration assembly 1 includes a compressor 11, a condenser 12, a first evaporator 13 and a second evaporator 14.

[0137] The anti-condensation pipe 2 can be arranged in the interlayer of the door frame of the refrigerator, or at each of the cross beams and vertical beams of the door frame. The high-temperature liquid refrigerant in the anti-condensation pipe 2 flows through each of the cross beams and vertical beams and the like to heat the surface thereof and balance the temperature difference between the surface and the ambient temperature, thereby achieving anti-condensation. The anti-condensation pipe 2 can be a plastic pipe body for circulating refrigerant and the like, and has high corrosion resistance, thereby prolonging the service life.

[0138] The refrigeration cycle circuit 3 includes a main pipe 30, a first refrigerant branch 31, a second refrigerant branch 32 and a second bypass branch 33 in communication with the main pipe 30, respectively. The first refrigerant branch 31 and the second refrigerant branch 32 are arranged in parallel. The first evaporator 13 is arranged in the first refrigerant branch 31. The outlet of the first evaporator 13 is in communication with the inlet of the second evaporator 14. The second evaporator 14, the compressor 11, the condenser 12 and the anti-condensation pipe 2 are arranged in the main pipe 30 in sequence. The second bypass branch 33 is arranged in parallel with the anti-condensation pipe 2.

[0139] The third valve body 6 is arranged at the connection between the first refrigerant branch 31 and the second refrigerant branch 32 and the main pipe 30. The third valve body 6 has a second inlet 61, a third inlet 62, a sixth outlet 63 and a seventh outlet 64. The second inlet 61 is in communication with the outlet of the condenser 12. The third inlet 62 is in communication with the second bypass branch 33. The sixth outlet 63 is in communication with the first refrigerant branch 31. The seventh outlet 64 is in communication with the second refrigerant branch 32. The sixth outlet 63 and the seventh outlet 64 each have a fully open state, a throttling state and a closed state. The third valve body 6 is configured to selectively conduct the second inlet 61 to any one of the sixth outlet 63 and the seventh outlet 64, or to selectively conduct the third inlet 62 to any one of the sixth outlet 63 and the seventh outlet 64.

[0140] For a dual-system refrigerator with the first evaporator 13 and the second evaporator 14, when just powered on or the refrigerator door is frequently opened by the user, or in a high-temperature environment, the temperature of the first compartment and the second compartment quickly rises. In the related art, if the first compartment and the second compartment have a simultaneous rapid refrigeration request, a large-flow throttling element is usually used to cool the second compartment, and a small-flow throttling element is used to cool the first compartment, so that the second compartment is quickly cooled to the set temperature, and the refrigeration demand of the first compartment is greater than that of the second compartment, and the problem of uneven distribution of refrigerant flow occurs, and the refrigerant flow cannot be reasonably distributed according to the refrigeration demand of the first compartment and the second compartment, and the operating energy consumption is increased.

[0141] In addition, in a high-temperature and high-humidity environment, in order to prevent condensation, the inner wall of the freezer compartment of the refrigerator is usually provided with an anti-condensation pipe 2, but in a low-humidity environment, condensation does not occur, and if the refrigerant flows through the anti-condensation pipe 2, the system thermal load will be increased. In order to achieve the best cooling speed and energy-saving operation, the system usually has multiple third valve bodies, and the control logic is complex, which affects the stability of the system operation. Moreover, in the related art, the third valve body for the refrigerator usually only has an on-off function, and does not have a throttling function, or an electronic expansion valve is used, which has a throttling function, but is usually one-in and one-out, and cannot realize flow path switching.

[0142] Therefore, in the embodiments of the present application, the third valve body 6 has a second inlet 61, a third inlet 62, a sixth outlet 63 and a seventh outlet 64, the second inlet 61 is in communication with the outlet of the condenser 12, the third inlet 62 is in communication with the second bypass branch 33, the sixth outlet 63 is in communication with the first refrigerant branch 31, and the seventh outlet 64 is in communication with the second refrigerant branch 32, the first evaporator 13 is arranged in the first refrigerant branch 31, and the second evaporator 14 is arranged in the main pipeline 30, so that the first evaporator 13 and the second evaporator 14 are arranged in the refrigeration cycle circuit 3 in a series-parallel manner, the first evaporator 13 is used for refrigerating the first compartment, and the second evaporator 14 is used for refrigerating the second compartment.

[0143] The refrigeration system 10 of the embodiment of the present application needs anti-condensation management under high temperature and high humidity environment condition, the second inlet 61 of the third valve body 6 is opened and the third inlet 62 is closed. When the first room has refrigeration demand, the second inlet 61 of the third valve body 6 is communicated with the sixth outlet 63 and the third inlet 62 and the seventh outlet 64 are closed. The high temperature and high pressure gas discharged from the compressor 11 becomes liquid refrigerant after being condensed and radiated in the condenser 12. The inlet of the anti-condensation pipe 2 is connected with the outlet of the condenser 12, the anti-condensation pipe 2 is prevented from condensation by using the heat of the high temperature liquid refrigerant, then the refrigerant flows through the flow channel communicated by the second inlet 61 and the sixth outlet 63 of the third valve body 6, the low temperature and low pressure liquid is evaporated and absorbs heat in the first evaporator 13, a part of the low temperature and low pressure gas is generated, the other part of the low temperature and low pressure liquid enters the second evaporator 14 to evaporate and absorb heat, the low temperature and low pressure gas is generated by taking away the heat of the second room, and then the low temperature and low pressure gas flows back to the compressor 11 to be compressed into high temperature and high pressure gas, to complete a refrigeration cycle. When only the second room has refrigeration demand, the sixth outlet 63 of the third valve body 6 is closed and the seventh outlet 64 is opened, the second inlet 61 is communicated with the seventh outlet 64, the high temperature and high pressure gas discharged from the compressor 11 becomes liquid refrigerant after being condensed and radiated in the condenser 12, the anti-condensation pipe 2 is prevented from condensation, then the refrigerant flows through the flow channel communicated by the second inlet 61 and the seventh outlet 64 of the third valve body 6, the low temperature and low pressure liquid is evaporated and absorbs heat in the second evaporator 14, the low temperature and low pressure gas is generated by taking away the heat of the second room, and then the low temperature and low pressure gas flows back to the compressor 11 to be compressed into high temperature and high pressure gas, to complete a refrigeration cycle.

[0144] Under the condition of medium and low humidity environment, when anti-condensation management is not needed, the second inlet 61 of the third valve body 6 is closed and the third inlet 62 is opened. Then according to whether the first room has refrigeration demand or only the second room has refrigeration demand, the third inlet 62 is selectively communicated with the sixth outlet 63 or the seventh outlet 64.

[0145] The sixth outlet 63 and the seventh outlet 64 of the third valve body 6 each have a full opening state, a throttling state and a closed state, and in addition to the switching function of the first refrigerant branch 31 and the second refrigerant branch 32, the throttling function is also provided, and at this time, the sixth outlet 63 and the seventh outlet 64 can be switched between the full opening state and the throttling state according to the operating frequency of the compressor 11, and four different flow combinations can be realized. For example, when the first chamber has a refrigeration demand, if the operating frequency of the compressor 11 is large, the sixth outlet 63 can be controlled to be in the full opening state to realize large-flow cooling, and if the operating frequency of the compressor 11 is small, the sixth outlet 63 can be controlled to be in the throttling state to realize small-flow energy-saving refrigeration. For example, when only the second chamber has a refrigeration demand, the seventh outlet 64 can be controlled to be in the full opening state or the throttling state according to the operating frequency of the compressor 11 to realize large-flow rapid refrigeration or small-flow energy-saving refrigeration. Therefore, the two-in and two-out third valve body 6 can select whether to perform condensation heat management according to the external environmental conditions, and can reasonably distribute the refrigerant flow according to the refrigeration demands of the second chamber and the second chamber, so that the condensation heat management and rapid cooling are realized while the system operating power consumption is reduced.

[0146] The refrigeration system 10 provided by the embodiment of the present application can realize balance among condensation heat management, cooling speed and energy-saving operation by using only one third valve body, and the control logic is simple, which is beneficial to improve the stability of system operation.

[0147] FIG. 9 is an exploded structural schematic view of the third valve body 6 in the refrigeration system 10 shown in FIG. 8.

[0148] In some embodiments, the third valve body 6 includes a second valve seat 65 and a second valve block 66 coaxially arranged, the end surface of the second valve seat 65 is provided with a second inlet 61, a third inlet 62, a sixth outlet 63 and a seventh outlet 64 which are spaced apart in the circumferential direction, the second inlet 61 and the third inlet 62 are arranged on a circumference with the center axis of the second valve seat 65 as the center and with a first length as the radius, the sixth outlet 63 and the seventh outlet 64 are arranged on a circumference with the center axis of the second valve seat 65 as the center and with a second length as the radius, and the first length is greater than the second length; the sixth outlet 63 includes a fourth through hole 631 and a fourth arc-shaped groove 632 in communication with the fourth through hole 631, and the seventh outlet 64 includes a fifth through hole 641 and a fifth arc-shaped groove 642 in communication with the fifth through hole 641.

[0149] The second valve block 66 comprises a second connecting portion 660 and fourth and fifth notches 661 and 662 provided on the second connecting portion 660, the second connecting portion 660 is in abutment with the end face of the second valve seat 65 and can rotate relative to the second valve seat 65, so that the fourth notch 661 can selectively communicate with any one of the second inlet 61 and the third inlet 62, and the fifth notch 662 can selectively communicate with any one of the sixth outlet 63 and the seventh outlet 64; when the fifth notch 662 communicates with the fourth through hole 631, the sixth outlet 63 is in a fully open state; when the fifth notch 662 communicates with the fifth through hole 641, the seventh outlet 64 is in a fully open state; when the fifth notch 662 communicates with the fourth arc-shaped groove 632, the sixth outlet 63 is in a throttling state; when the fifth notch 662 communicates with the fifth arc-shaped groove 642, the seventh outlet 64 is in a throttling state; when the second connecting portion 660 covers the sixth outlet 63 except the fifth notch 662, the sixth outlet 63 is in a closed state; when the second connecting portion 660 covers the seventh outlet 64 except the fifth notch 662, the seventh outlet 64 is in a closed state.

[0150] Referring to FIG. 9, the end face of the second valve seat 65 is a flat matching face, and the second valve block 66 can be in abutment with the end face of the second valve seat 65 and rotate at an angle. The third valve body 6 further comprises a second inlet pipe, a third inlet pipe, a sixth outlet pipe and a seventh outlet pipe fixedly connected with the second valve seat 65, the second inlet pipe communicates with the second inlet 61, the third inlet pipe communicates with the third inlet 62, the sixth outlet pipe communicates with the sixth outlet 63, and the seventh outlet pipe communicates with the seventh outlet 64, the second inlet pipe, the third inlet pipe, the sixth outlet pipe and the seventh outlet pipe respectively communicate with the refrigeration cycle circuit 3 to meet the needs of the refrigeration system 10.

[0151] The third valve body 6 can further comprise a control unit and a motor (not shown in the figure), the control unit controls the rotor of the motor to drive the second valve block 66 to rotate relative to the second valve seat 65, the second connecting portion 660 of the second valve block 66 is used for rotating matching with the end face of the second valve seat 65, when the second connecting portion 660 rotates in a first direction, the fourth notch 661 communicates with the second inlet 61; when the second connecting portion 660 rotates in a second direction, the fourth notch 661 communicates with the third inlet 62, the first direction is opposite to the second direction.

[0152] When the second connecting portion 660 rotates to cover the sixth outlet 63 except for the fifth gap 662, the sixth outlet 63 is in a closed state, and the refrigerant cannot flow out of the sixth outlet 63. Conversely, when the second connecting portion 660 rotates to uncover the sixth outlet 63, if the fifth gap 662 corresponds to the fourth through hole 631 of the sixth outlet 63, the sixth outlet 63 is in a fully open state at this time, and the refrigerant directly flows out of the fourth through hole 631; if the fifth gap 662 corresponds to the fourth arc-shaped groove 632 of the sixth outlet 63, the sixth outlet 63 is in a throttling state at this time, and the refrigerant enters the fourth through hole 631 and then flows out of the fourth arc-shaped groove 632. Similarly, when the second connecting portion 660 covers the seventh outlet 64, the seventh outlet 64 is in a closed state; when the second connecting portion 660 rotates to communicate with the fifth through hole 641 or the fifth arc-shaped groove 642 of the seventh outlet 64, the fully open state or the throttling state of the seventh outlet 64 can be achieved.

[0153] It can be understood that the third valve body 6 can also have other structural forms as long as the functions of on-off and throttling of two inlets and two outlets can be achieved, which is not limited here.

[0154] In some embodiments, the refrigeration assembly further comprises a first throttling element 15 and / or a second throttling element 16, the first throttling element 15 is arranged in the first refrigerant branch 31, and the first throttling element 15 communicates with the inlet of the first evaporator 13, and the second throttling element 16 is arranged in the second refrigerant branch 32.

[0155] The first throttling element 15 and the second throttling element 16 can be, for example but not limited to, capillary tubes, and the first throttling element 15 and the second throttling element 16 can be arranged in the refrigeration cycle circuit 3 simultaneously or separately. The high-temperature and high-pressure gas discharged from the compressor 11 becomes liquid refrigerant after being condensed and cooled by the condenser 12, and the anti-condensation pipe 2 is prevented from condensation, and then flows through the flow passage of the second inlet 61 and the seventh outlet 64 of the third valve body 6, and the first throttling element 15 and the second throttling element 16 can respectively hinder, restrict flow, and reduce the pressure of the high-temperature and high-pressure liquid refrigerant to become low-temperature and low-pressure liquid, thereby improving the heat exchange efficiency of the condenser 12.

[0156] In some embodiments, the refrigeration system 10 further comprises a filtering device 7, the inlet of the filtering device 7 communicates with the condenser 12, the first output end of the filtering device 7 communicates with the inlet of the anti-condensation pipe 2, and the second output end of the filtering device 7 communicates with the second bypass branch 33.

[0157] The filtering device 7 is arranged in the main pipeline 30 and located between the condenser 12 and the anti-condensation pipe 2, and the filtering device 7 is used to filter impurities, dust, and the like in the refrigerant, so as to prevent the impurities and dust from entering the anti-condensation pipe 2 or the second bypass branch 33.

[0158] Fig. 10 is a structural schematic diagram of the refrigeration system 10 according to another embodiment of the present application.

[0159] Referring to Fig. 10, the refrigeration system 10 in the embodiment of the present application is similar in structure to the refrigeration system 10 shown in Fig. 8, except that the first evaporator 13 and the second evaporator 14 are arranged in parallel.

[0160] Specifically, the refrigeration system 10 comprises the refrigeration assembly 1, the anti-condensation pipe 2, the refrigeration cycle circuit 3 and the third valve body 6. The refrigeration assembly 1 comprises the compressor 11, the condenser 12, the first evaporator 13 and the second evaporator 14. The refrigeration cycle circuit 3 comprises the main pipe 30 and the first refrigerant branch 31, the second refrigerant branch 32 and the second bypass branch 33 which are respectively communicated with the main pipe 30, the first refrigerant branch 31 and the second refrigerant branch 32 are arranged in parallel, the first evaporator 13 is arranged in the first refrigerant branch 31, the second evaporator 14 is arranged in the second refrigerant branch 32, the outlet of the first evaporator 13 and the outlet of the second evaporator 14 are both communicated with the inlet of the compressor 11, the compressor 11, the condenser 12 and the anti-condensation pipe 2 are all arranged in the main pipe 30, and the second bypass branch 33 is arranged in parallel with the anti-condensation pipe 2.

[0161] The third valve body 6 has the second inlet 61, the third inlet 62, the sixth outlet 63 and the seventh outlet 64, the second inlet 61 is communicated with the outlet of the condenser 12, the third inlet 62 is communicated with the second bypass branch 33, the sixth outlet 63 is communicated with the first refrigerant branch 31, the seventh outlet 64 is communicated with the second refrigerant branch 32, the sixth outlet 63 and the seventh outlet 64 both have the fully open state, the throttling state and the closed state, and the second inlet 61 and the third inlet 62 are selectively communicated with the sixth outlet 63 or the seventh outlet 64.

[0162] In the high temperature and high humidity environment condition, the anti-condensation management is needed, the second inlet 61 of the third valve body 6 is opened and the third inlet 62 is closed.

[0163] The refrigeration system 10 in the embodiment of the present application needs the anti-condensation management in the high temperature and high humidity environment condition, the second inlet 61 of the third valve body 6 is opened and the third inlet 62 is closed. According to the different conditions that the first room and the second room have the refrigeration demand simultaneously or have the refrigeration demand respectively, the second inlet 61 of the third valve body 6 is selectively communicated with the sixth outlet 63 or the seventh outlet 64. In the low humidity environment condition, the anti-condensation management is not needed, the second inlet 61 of the third valve body 6 is closed and the third inlet 62 is opened. Then according to the different conditions that the first room and the second room have the refrigeration demand simultaneously or have the refrigeration demand respectively, the third inlet 62 is selectively communicated with the sixth outlet 63 or the seventh outlet 64.

[0164] The sixth outlet 63 and the seventh outlet 64 of the third valve body 6 each have a full opening state, a throttling state and a closed state, and in addition to the switching function of the first refrigerant branch 31 and the second refrigerant branch 32, the throttling function is also provided. At this time, the sixth outlet 63 and the seventh outlet 64 can be switched between the full opening state and the throttling state according to the operating frequency of the compressor 11, and four different flow combinations can be realized. For example, when the first chamber has a refrigeration demand, if the operating frequency of the compressor 11 is large, the sixth outlet 63 can be controlled to be in the full opening state to achieve large-flow cooling, and if the operating frequency of the compressor 11 is small, the sixth outlet 63 can be controlled to be in the throttling state to achieve small-flow energy-saving refrigeration. For example, when only the second chamber has a refrigeration demand, the seventh outlet 64 can be controlled to be in the full opening state or the throttling state according to the operating frequency of the compressor 11 to achieve large-flow rapid refrigeration or small-flow energy-saving refrigeration. Thus, the two-in and two-out third valve body 6 can be used to select whether to perform condensation heat management according to the external environmental conditions, and the refrigerant flow can be reasonably distributed according to the refrigeration demand of the first chamber and the second chamber, so that the condensation heat management and rapid cooling are realized while the system operating power consumption is reduced.

[0165] In some embodiments, the refrigeration assembly further comprises a first throttling element 15 and / or a second throttling element 16, the first throttling element 15 is arranged in the first refrigerant branch 31 and is in communication with the inlet of the first evaporator 13, and the second throttling element 16 is arranged in the second refrigerant branch 32 and is in communication with the inlet of the second evaporator 14.

[0166] The first throttling element 15 and the second throttling element 16 can be arranged in the refrigeration cycle circuit 3 simultaneously or separately. The high-temperature and high-pressure gas discharged from the compressor 11 becomes liquid refrigerant after being condensed and dissipated by the condenser 12, and the anti-condensation tube 2 is prevented from condensation. After the flow channel of the second inlet 61 and the sixth outlet 63 or the seventh outlet 64 of the third valve body 6 is conducted, the first throttling element 15 and the second throttling element 16 can respectively hinder, restrict and depress the high-temperature and high-pressure liquid refrigerant to become low-temperature and low-pressure liquid, thereby improving the heat exchange efficiency of the condenser 12.

[0167] FIG. 11 is a structural schematic diagram of a refrigerator according to an embodiment of the present application.

[0168] Referring to FIG. 11, the refrigerator provided by the embodiments of the present application comprises a cabinet, a refrigeration system 10 according to the embodiments of the present application, a sensor assembly and a controller.

[0169] The box is internally provided with a first chamber 101 and a second chamber 102, the first evaporator 13 of the refrigeration system 10 is arranged in the first chamber 101, and the second evaporator 14 is arranged in the second chamber 102; the sensor assembly is used for detecting environmental information of the refrigerator; the controller is electrically connected with the sensor assembly, the compressor 11 and the third valve body 6 of the refrigeration system 10 respectively, and the controller is configured to control the third valve body 6 and the compressor 11 to operate according to the environmental information.

[0170] Fig. 12 is a flow block diagram of a control method of a refrigerator according to an embodiment of the present application.

[0171] Referring to Fig. 12, the embodiment of the present application provides a control method of a refrigerator, which is applied to the refrigerator of each embodiment of the present application, and the control method comprises the following steps S1-S2.

[0172] Step S1: obtaining environmental information of the refrigerator;

[0173] Step S2: controlling the third valve body 6 and the compressor 11 to operate according to the environmental information.

[0174] Fig. 13 is a detailed flow block diagram of a control method of a refrigerator according to an embodiment of the present application.

[0175] In some embodiments, the second evaporator 14 of the refrigerator is arranged in the main pipeline 30, and the environmental information comprises environmental temperature and environmental relative humidity of the refrigerator, temperature of the first chamber 101 and temperature of the second chamber 102. At this time, the structure of the refrigeration system 10 is shown in Fig. 8, the first evaporator 13 and the second evaporator 14 are arranged in the refrigeration cycle circuit 3 in a series-parallel manner, the anti-condensation pipe 2 is arranged in parallel with the second bypass branch 33, and the third valve body 6 with on-off and throttling functions is combined with the throttling element, so that the third valve body 6 and the compressor 11 can be controlled to work according to the environmental information of the refrigerator.

[0176] As shown in Fig. 8, in order to facilitate the description of the conduction and disconnection of each inlet and outlet of the third valve body 6, the position of the second inlet 61 is marked as "A", the position of the third inlet 62 is marked as "B", the position of the sixth outlet 63 is marked as "C", and the position of the seventh outlet 64 is marked as "D".

[0177] As shown in Fig. 13, specifically, only the second chamber 102 has a refrigeration demand, and step S2 of controlling the third valve body 6 and the compressor 11 to operate according to the environmental information comprises the following steps S21-S21:

[0178] Step S21: according to the environmental temperature being greater than an environmental temperature threshold T, or according to the environmental relative humidity being greater than a humidity threshold Th, controlling the second inlet 61 and the seventh outlet 64 of the third valve body 6 to be in conduction, and the third inlet 62 and the sixth outlet 63 to be closed;

[0179] Step S22: According to the rotation speed of the compressor 11 being greater than the rotation speed threshold f1, or according to the temperature of the second chamber 102 being greater than the first temperature threshold T1, the seventh outlet 64 is controlled to be in the fully open state;

[0180] Step S23: According to the rotation speed of the compressor 11 being less than or equal to the rotation speed threshold f1, or according to the temperature of the second chamber 102 being less than or equal to the first temperature threshold T1, the seventh outlet 64 is controlled to be in the throttling state.

[0181] In this embodiment, when only the second chamber 102 has a refrigeration demand, it is first determined that the anti-condensation management is needed according to the ambient temperature being greater than the ambient temperature threshold T or the ambient relative humidity being greater than the humidity threshold Th, the second inlet 61 of the third valve body 6 is controlled to be in conduction with the seventh outlet 64, and the third inlet 62 is controlled to be in conduction with the sixth outlet 63, that is, AD is in conduction and BC is in conduction. Then, according to the rotation speed of the compressor 11, it is determined that the seventh outlet 64 of the third valve body 6 is in the fully open state to realize large-flow refrigeration and achieve rapid cooling, or is in the throttling state to realize small-flow refrigeration and achieve energy-saving operation.

[0182] In some embodiments, according to only the second chamber 102 having a refrigeration demand, step S2, the third valve body 6 and the compressor 11 are controlled to operate according to the ambient information, which includes:

[0183] Step S24: According to the ambient temperature being less than or equal to the ambient temperature threshold T, or according to the ambient relative humidity being less than or equal to the humidity threshold Th, the second inlet 61 of the third valve body 6 is controlled to be in conduction with the sixth outlet 63, and the third inlet 62 is controlled to be in conduction with the seventh outlet 64;

[0184] Step S25: According to the rotation speed of the compressor 11 being greater than the rotation speed threshold f1, or according to the temperature of the second chamber 102 being greater than the first temperature threshold T1, the seventh outlet 64 is controlled to be in the fully open state;

[0185] Step S26: According to the rotation speed of the compressor 11 being less than or equal to the rotation speed threshold f1, or according to the temperature of the second chamber 102 being less than or equal to the first temperature threshold T1, the seventh outlet 64 is controlled to be in the throttling state.

[0186] In this embodiment, when only the second chamber 102 has a refrigeration demand, it is first determined that the anti-condensation management is not needed according to the ambient temperature being less than or equal to the ambient temperature threshold T or the ambient relative humidity being less than or equal to the humidity threshold Th, the second inlet 61 of the third valve body 6 is controlled to be in conduction with the sixth outlet 63, and the third inlet 62 is controlled to be in conduction with the seventh outlet 64, that is, AC is in conduction and BD is in conduction, so as to reduce the power consumption of the system. Then, according to the rotation speed of the compressor 11, it is determined that the seventh outlet 64 of the third valve body 6 is in the fully open state to realize large-flow refrigeration and achieve rapid cooling, or is in the throttling state to realize small-flow refrigeration and achieve energy-saving operation.

[0187] In some embodiments, according to the first chamber 101 having a refrigeration demand, step S2, controlling the third valve body 6 and the compressor 11 to operate according to the environmental information includes:

[0188] Step S21': according to the environmental temperature being greater than an environmental temperature threshold T, or according to the environmental relative humidity being greater than a humidity threshold Th, controlling the second inlet 61 of the third valve body 6 to be in communication with the sixth outlet 63, and the third inlet 62 to be closed with the seventh outlet 64;

[0189] Step S22': according to the rotational speed of the compressor 11 being greater than a rotational speed threshold f1, or according to the temperature of the first chamber 101 being greater than a second temperature threshold T2, controlling the sixth outlet 63 to be in a fully open state;

[0190] Step S23': according to the rotational speed of the compressor 11 being less than or equal to the rotational speed threshold f1, or according to the temperature of the first chamber 101 being less than or equal to the second temperature threshold T2, controlling the sixth outlet 63 to be in a throttling state.

[0191] In this embodiment, when the first chamber 101 has a refrigeration demand, it is first determined whether the anti-condensation management is needed according to whether the environmental temperature is greater than an environmental temperature threshold T or the environmental relative humidity is greater than a humidity threshold Th, and the second inlet 61 of the third valve body 6 is controlled to be in communication with the sixth outlet 63, and the third inlet 62 is controlled to be closed with the seventh outlet 64, i.e., AC is turned on and BD is turned off. Then, according to the rotational speed of the compressor 11, it is determined whether the sixth outlet 63 of the third valve body 6 is in a fully open state for large-flow refrigeration to achieve rapid cooling, or in a throttling state for small-flow refrigeration to achieve energy-saving operation.

[0192] In some embodiments, according to the first chamber 101 having a refrigeration demand, step S2, controlling the third valve body 6 and the compressor 11 to operate according to the environmental information includes:

[0193] Step S24': according to the environmental temperature being less than or equal to an environmental temperature threshold T, or according to the environmental relative humidity being less than or equal to a humidity threshold Th, controlling the third inlet 62 of the third valve body 6 to be in communication with the sixth outlet 63, and the second inlet 61 to be closed with the seventh outlet 64;

[0194] Step S25': according to the rotational speed of the compressor 11 being greater than a rotational speed threshold f1, or according to the temperature of the first chamber 101 being greater than a second temperature threshold T2, controlling the sixth outlet 63 to be in a fully open state;

[0195] Step S26': according to the rotational speed of the compressor 11 being less than or equal to the rotational speed threshold f1, or according to the temperature of the first chamber 101 being less than or equal to the second temperature threshold T2, controlling the sixth outlet 63 to be in a throttling state.

[0196] In the embodiment, when the first chamber 101 has a refrigeration requirement, it is determined that the anti-condensation management is not required according to the ambient temperature being less than or equal to the ambient temperature threshold T or the ambient relative humidity being less than or equal to the humidity threshold Th, the third inlet 62 of the third valve body 6 is controlled to be in communication with the sixth outlet 63, and the second inlet 61 is controlled to be closed with the seventh outlet 64, that is, BC is in communication and AD is closed, so as to reduce the power consumption of the system. Then, according to the rotating speed of the compressor 11, it is determined that the sixth outlet 63 of the third valve body 6 is in a full opening state for large-flow refrigeration to realize rapid cooling, or in a throttling state for small-flow refrigeration to realize energy-saving operation.

[0197] FIG. 14 is a detailed flow chart of the control method of the refrigerator according to an embodiment of the present application.

[0198] In some embodiments, the second evaporator 14 of the refrigerator is arranged in the second refrigerant branch 32, and the environmental information includes the ambient temperature or the ambient relative humidity of the refrigerator, the temperature of the first chamber 101 and the temperature of the second chamber 102. At this time, the structure of the refrigeration system 10 is shown in FIG. 10, the first evaporator 13 and the second evaporator 14 are arranged in parallel in the refrigeration cycle circuit 3, the anti-condensation pipe 2 is arranged in parallel with the second bypass branch 33, and the third valve body 6 with on-off and throttling functions is combined with the throttling element, so as to control the third valve body 6 and the compressor 11 to work according to the environmental information of the refrigerator.

[0199] As shown in FIG. 10, in order to facilitate the description of the communication and disconnection of each inlet and outlet of the third valve body 6, the position of the second inlet 61 is marked as "A", the position of the third inlet 62 is marked as "B", the position of the sixth outlet 63 is marked as "C", and the position of the seventh outlet 64 is marked as "D".

[0200] As shown in FIG. 14, specifically, step S2, controlling the third valve body 6 and the compressor 11 to operate according to the environmental information includes:

[0201] Step S21": according to the ambient temperature being greater than the ambient temperature threshold T, or according to the ambient relative humidity being greater than the humidity threshold Th, the second inlet 61 of the third valve body 6 is controlled to be in communication, and the third inlet 62 is controlled to be closed;

[0202] Step S22": according to the ambient temperature being less than or equal to the ambient temperature threshold T, or according to the ambient relative humidity being less than or equal to the humidity threshold Th, the third inlet 62 of the third valve body 6 is controlled to be in communication, and the second inlet 61 is controlled to be closed.

[0203] In this embodiment, whether to perform condensation heat management is determined according to whether the ambient temperature is greater than an ambient temperature threshold T or whether the ambient relative humidity is greater than a humidity threshold Th, and then switching between the second inlet 61 and the third inlet 62 of the third valve body 6 is controlled, and then whether the first chamber 101 and the second chamber 102 have cooling requirements is determined.

[0204] In some embodiments, when the first chamber has a cooling requirement, the second inlet 61 is connected to the sixth outlet 63 or the third inlet 62 is connected to the sixth outlet 63, step S2, and the operation of the third valve body 6 and the compressor 11 according to the environmental information includes:

[0205] Step S23'': the temperature of the first chamber 101 is less than the third temperature threshold T3, and the sixth outlet 63 is controlled to be in a throttling state;

[0206] Step S24'': the temperature of the first chamber 101 is greater than or equal to the third temperature threshold T3, and according to whether the rotation speed of the compressor 11 is greater than a rotation speed threshold f1 or whether the temperature of the first chamber 101 is greater than a fourth temperature threshold T4, the sixth outlet 63 is controlled to be in a fully open state;

[0207] Step S25'': the temperature of the first chamber 101 is greater than or equal to the third temperature threshold T3, and according to whether the rotation speed of the compressor 11 is less than or equal to the rotation speed threshold f1 or whether the temperature of the first chamber 101 is less than or equal to the fourth temperature threshold T4, the sixth outlet 63 is controlled to be in a throttling state, and the fourth temperature threshold T4 is greater than the third temperature threshold T3.

[0208] In this embodiment, the first evaporator 13 of the first chamber 101 and the second evaporator 14 of the second chamber 102 are controlled separately. If the first chamber 101 has no cooling requirement or although it has a cooling requirement but the running speed of the compressor 11 is small, the sixth outlet 63 is controlled to be in a throttling state. At this time, according to whether there is a condensation prevention requirement, the second inlet 61 can be connected to the sixth outlet 63, that is, AC is connected, or the third inlet 62 can be connected to the sixth outlet 63, that is, BC is connected. When the cooling requirement of the first chamber 101 is urgent, the sixth outlet 63 is controlled to be in a fully open state, and at this time, according to whether there is a condensation prevention requirement, the second inlet 61 can be connected to the sixth outlet 63, that is, AC is connected, or the third inlet 62 can be connected to the sixth outlet 63, that is, BC is connected.

[0209] In some embodiments, when the second chamber 102 has a cooling requirement, the second inlet 61 is connected to the seventh outlet 64 or the third inlet 62 is connected to the seventh outlet 64, step S2, and the operation of the third valve body 6 and the compressor 11 according to the environmental information includes:

[0210] Step S27'': according to the temperature of the second chamber 102 being less than the fifth temperature threshold T5, controlling the seventh outlet 64 to be in the throttling state;

[0211] Step S28'': according to the temperature of the second chamber 102 being greater than or equal to the fifth temperature threshold T5, according to the rotating speed of the compressor 11 being greater than the rotating speed threshold f1, or according to the temperature of the second chamber 102 being greater than the sixth temperature threshold T6, controlling the seventh outlet 64 to be in the fully open state;

[0212] Step S29'': according to the temperature of the second chamber 102 being greater than or equal to the fifth temperature threshold T5, according to the rotating speed of the compressor 11 being less than or equal to the rotating speed threshold f1, or according to the temperature of the second chamber 102 being less than or equal to the sixth temperature threshold T6, controlling the seventh outlet 64 to be in the throttling state, wherein the sixth temperature threshold T6 is greater than the fifth temperature threshold T5.

[0213] In the embodiment, the first evaporator 13 of the first chamber 101 and the second evaporator 14 of the second chamber 102 are controlled separately. If there is no refrigeration demand for the second chamber 102, or although there is refrigeration demand, the operating speed of the compressor 11 is small, the seventh outlet 64 is controlled to be in the throttling state. At this time, according to whether there is anti-condensation demand, the second inlet 61 and the seventh outlet 64 can be turned on, that is, AD is turned on, or the third inlet 62 and the seventh outlet 64 are turned on, that is, BD is turned on. When the refrigeration demand of the second chamber 102 is urgent, the seventh outlet 64 is controlled to be in the fully open state, and at this time, according to whether there is anti-condensation demand, the second inlet 61 and the seventh outlet 64 can be turned on, that is, AD is turned on, or the third inlet 62 and the seventh outlet 64 are turned on, that is, BD is turned on.

[0214] It can be understood that the first temperature threshold T1, the second temperature threshold T2, the third temperature threshold T3, the fourth temperature threshold T4, the fifth temperature threshold T5, and the sixth temperature threshold T6 in the embodiment of the application are not fixed values, and the size of the ambient temperature threshold T and the rotating speed threshold f1 is not a fixed value, which can be adjusted according to different products and use environments, and will not be described again.

[0215] In some embodiments, the control method of the refrigerator further comprises:

[0216] Step S3: turning on the third valve body 6 before the compressor 11 operates, and controlling the sixth outlet 63 and the seventh outlet 64 to be in the fully open state;

[0217] Step S4: turning off the third valve body 6 after the compressor 11 stops.

[0218] Since the third valve body 6 is started at the same time as the compressor 11, the system pipeline has a pressure difference and the exhaust pressure of the compressor 11 is large, which will impact the third valve body 6, thereby reducing the service life of the third valve body 6. Therefore, in the embodiment, the third valve body 6 is opened in advance before the compressor 11 is started, and the sixth outlet 63 and the seventh outlet 64 of the third valve body 6 are both in a fully open state, which can balance the system pressure and avoid damage due to excessive pressure at the moment of starting. When the compressor 11 is in a stopped state, the third valve body 6 is closed again to cut off the flow direction of the refrigerant and maintain the pressure difference between the condenser 12 and the first evaporator 13 and the second evaporator 14, thereby preventing the high-temperature refrigerant in the condenser 12 from vaporizing and absorbing heat from the outside due to the reduction of pressure, thereby reducing the energy loss of the system and further achieving the energy-saving effect.

[0219] Therefore, the control method of the refrigerator in the embodiments of the present application can balance the condensation heat management, the cooling speed and the energy-saving operation by arranging the first evaporator 13 for cooling the first chamber 101 and the second evaporator 14 for cooling the second chamber 102 in the refrigeration cycle circuit 3 in a series-parallel or parallel manner, arranging the anti-condensation pipe 2 and the second bypass branch 33 in parallel, and using the third valve body with on-off and throttling functions to control the third valve body and the compressor according to the environmental information of the refrigerator. Since only one third valve body 6 is used to balance the condensation heat management, the cooling speed and the energy-saving operation, the control logic is simple, and the stability of the system operation is improved.

[0220] The above describes only the preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed in the present application can be easily thought of by those skilled in the art, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A refrigeration system wherein, The application relates to a refrigeration assembly and a refrigeration cycle circuit. The refrigeration assembly comprises a compressor, a condenser, a first evaporator, a second evaporator, a first throttling element and a second throttling element. The refrigeration cycle circuit comprises a main pipeline and first and second refrigerant branch pipelines in communication with the main pipeline, the first and second refrigerant branch pipelines are arranged in parallel, the first throttling element and the first evaporator are arranged in the first refrigerant branch pipeline in sequence in the flow direction of refrigerant, the second throttling element is arranged in the second refrigerant branch pipeline, the outlet of the first evaporator and the outlet of the second throttling element are in communication with the inlet of the second evaporator, and the second evaporator, the compressor and the condenser are arranged in the main pipeline in sequence. A first valve body is arranged at the connection between the first and second refrigerant branch pipelines and the main pipeline, the first valve body has a first inlet, a first outlet and a second outlet, the first inlet is in communication with the outlet of the condenser, the first outlet is in communication with the first refrigerant branch pipeline, the second outlet is in communication with the second refrigerant branch pipeline, and the first outlet and the second outlet have a fully-open state, a throttling state and a closed state. The first valve body comprises a first valve seat and a first valve block arranged coaxially, the end face of the first valve seat is provided with the first inlet, the first outlet and the second outlet which are distributed in a circumferential direction, the first outlet comprises a first through hole and a first arc-shaped groove in communication with the first through hole, and the second outlet comprises a second through hole and a second arc-shaped groove in communication with the second through hole.

2. The refrigeration system of claim 1, wherein, The first valve block comprises a first connecting part provided with a first notch and a second notch, the first connecting part is attached to the end face of the first valve seat and can rotate relative to the first valve seat, so that the first notch can selectively communicate with any one of the first through hole and the first arc-shaped groove, and the second notch can selectively communicate with any one of the second through hole and the second arc-shaped groove; when the first notch communicates with the first through hole, the first outlet is in the fully-open state; when the first notch communicates with the first arc-shaped groove, the first outlet is in the throttling state; when the second notch communicates with the second through hole, the second outlet is in the fully-open state; when the second notch communicates with the second arc-shaped groove, the second outlet is in the throttling state; when the remaining part of the first connecting part except the notches covers the first outlet, the first outlet is in the closed state; and when the remaining part of the first connecting part except the notches covers the second outlet, the second outlet is in the closed state. The refrigeration assembly further comprises a third evaporator and a third throttling element, and the refrigeration cycle circuit further comprises a third refrigerant branch pipeline in communication with the main pipeline, the third refrigerant branch pipeline is arranged in parallel with the second refrigerant branch pipeline, and the third throttling element and the third evaporator are arranged in the third refrigerant branch pipeline in sequence in the flow direction of refrigerant.

3. The refrigeration system of claim 1 wherein, ​ The first valve body further has a third outlet, which is in communication with the third refrigerant branch, and the third outlet has a full opening state, a throttling state and a closed state.

4. The refrigeration system of claim 3 wherein, The first valve body comprises a first valve seat and a first valve block arranged coaxially, an end surface of the first valve seat is provided with the first inlet, the first outlet, the second outlet and the third outlet distributed in a circumferential direction, the first outlet comprises a first through hole and a first arc-shaped groove in communication with the first through hole, the second outlet comprises a second through hole and a second arc-shaped groove in communication with the second through hole, and the third outlet comprises a third through hole and a third arc-shaped groove in communication with the third through hole. The first valve block comprises a first connecting part provided with a first notch, a second notch and a third notch, the first connecting part is attached to the end surface of the first valve seat and can rotate relative to the first valve seat, so that the first notch can selectively communicate with any one of the first through hole and the first arc-shaped groove, the second notch can selectively communicate with any one of the second through hole and the second arc-shaped groove, and the third notch can selectively communicate with any one of the third through hole and the third arc-shaped groove; when the first notch communicates with the first through hole, the first outlet is in a full opening state; when the first notch communicates with the first arc-shaped groove, the first outlet is in a throttling state; when the second notch communicates with the second through hole, the second outlet is in a full opening state; when the second notch communicates with the second arc-shaped groove, the second outlet is in a throttling state; when the third notch communicates with the third through hole, the third outlet is in a full opening state; when the third notch communicates with the third arc-shaped groove, the third outlet is in a throttling state; when the remaining parts of the first connecting part except the first notch, the second notch and the third notch cover the first outlet, the second outlet and the third outlet respectively, the first outlet, the second outlet and the third outlet correspond to a closed state respectively.

5. The refrigeration system of any of claims 1 to 4, wherein, The refrigeration cycle circuit further comprises a first bypass branch, and the refrigeration system further comprises an anti-condensation pipe and a second valve body, the anti-condensation pipe is arranged between the first valve body and the second valve body, and the first bypass branch is arranged in parallel with the anti-condensation pipe, the second valve body has a second inlet, a fourth outlet and a fifth outlet, the second inlet is in communication with the outlet of the condenser, the fourth outlet is in communication with the anti-condensation pipe, and the fifth outlet is in communication with the first bypass branch.

6. A refrigerator, wherein, It comprises: a cabinet, wherein a first chamber and a second chamber are arranged in the cabinet; The refrigeration system according to any one of claims 1-5, wherein a first evaporator of the refrigeration system is arranged in the first chamber, and a second evaporator is arranged in the second chamber; a sensor assembly for detecting environmental information of the refrigerator, wherein the environmental information comprises a temperature of the first chamber and a temperature of the second chamber; and and A controller is electrically connected with the sensor assembly, a compressor of the refrigeration system and a first valve body respectively, and is configured to confirm refrigeration demands of the first chamber and the second chamber according to the environmental information, and control the first valve body and the compressor to operate according to the refrigeration demands.

7. The refrigerator of claim 6, wherein, The cabinet further comprises a third chamber, and the refrigeration system further comprises a third evaporator arranged in the third chamber; the environmental information further comprises a temperature of the third chamber; and the controller is further configured to confirm a refrigeration demand of the third chamber according to the environmental information, and control the first valve body and the compressor to operate according to the refrigeration demand.

8. A control method of a refrigerator applied to the refrigerator of claim 6, wherein, The control method comprises: obtaining environmental information of the refrigerator, wherein the environmental information comprises a temperature of a first chamber and a temperature of a second chamber; confirming a refrigeration demand of the first chamber and a refrigeration demand of the second chamber according to the environmental information; controlling a first valve body and a compressor to operate according to the refrigeration demands. 9.The control method of a refrigerator according to claim 8, wherein, The control of the first valve body and the compressor according to the refrigeration demands comprises: controlling a first outlet of the first valve body to be in a closed state only when the second chamber has a refrigeration demand; controlling a second outlet of the first valve body to be in a fully open state according to a rotation speed of the compressor being greater than a first rotation speed threshold, and controlling the second outlet of the first valve body to be in a throttling state according to the rotation speed of the compressor being less than or equal to the first rotation speed threshold. 10.The control method of a refrigerator according to claim 8, wherein, The control of the first valve body and the compressor according to the refrigeration demands comprises: controlling the second outlet of the first valve body to be in a closed state when the first chamber has a refrigeration demand; controlling a first outlet of the first valve body to be in a fully open state according to the rotation speed of the compressor being greater than a second rotation speed threshold, and controlling the first outlet of the first valve body to be in a throttling state according to the rotation speed of the compressor being less than or equal to the second rotation speed threshold. 11.The control method of a refrigerator according to claim 8, wherein, The control of the first valve body and the compressor according to the refrigeration demands comprises: controlling the first outlet of the first valve body to be in a closed state only when the second chamber has a refrigeration demand; controlling the rotation speed of the compressor to remain a current first rotation speed and controlling the second outlet of the first valve body to be in a fully open state according to the temperature of the second chamber being between a first temperature threshold and a second temperature threshold, wherein the second temperature threshold is greater than the first temperature threshold; controlling the rotation speed of the compressor to be a second rotation speed and controlling the second outlet of the first valve body to be in a fully open state according to the temperature of the second chamber being greater than the second temperature threshold, wherein the second rotation speed is greater than the first rotation speed; controlling the rotation speed of the compressor to be the first rotation speed and controlling the second outlet of the first valve body to be in a throttling state according to the temperature of the second chamber being less than the first temperature threshold. 12.The control method of a refrigerator according to claim 11, wherein, The control of the first valve body and the compressor according to the refrigeration demands comprises: controlling the second outlet of the first valve body to be in a closed state according to the temperature of the second chamber being less than a difference between the first temperature threshold and a temperature variable, and the temperature of the first chamber being greater than a third temperature threshold; according to the temperature of the first chamber being between a third temperature threshold and a fourth temperature threshold, controlling the rotation speed of the compressor to remain at the first rotation speed while controlling the first outlet of the first valve body to be in a fully open state, wherein the fourth temperature threshold is greater than the third temperature threshold; according to the temperature of the first chamber being greater than a fourth temperature threshold, controlling the rotation speed of the compressor to be a second rotation speed while controlling the first outlet of the first valve body to be in a fully open state, wherein the second rotation speed is greater than the first rotation speed; according to the temperature of the first chamber being less than a third temperature threshold, controlling the rotation speed of the compressor to be the first rotation speed while controlling the first outlet of the first valve body to be in a throttling state; according to the temperature of the first chamber being less than a difference between a third temperature threshold and a temperature variable and the temperature of the second chamber being between a first temperature threshold and a second temperature threshold, controlling the first outlet of the first valve body to be closed and the second outlet to be in a fully open state. 13.The control method of a refrigerator according to claim 8, wherein, the controlling the first valve body and the compressor according to the refrigeration requirement comprises: when the first chamber and the second chamber both have the refrigeration requirement, controlling the second outlet of the first valve body to be in a closed state; according to the temperature of the first chamber being between a third temperature threshold and a fourth temperature threshold, controlling the rotation speed of the compressor to remain at a current first rotation speed while controlling the first outlet of the first valve body to be in a fully open state, wherein the fourth temperature threshold is greater than the third temperature threshold; according to the temperature of the first chamber being greater than a fourth temperature threshold, controlling the rotation speed of the compressor to be a second rotation speed while controlling the first outlet of the first valve body to be in a fully open state, wherein the second rotation speed is greater than the first rotation speed; according to the temperature of the first chamber being less than a third temperature threshold, controlling the rotation speed of the compressor to be the first rotation speed while controlling the first outlet of the first valve body to be in a throttling state; according to the temperature of the first chamber being less than a difference between a third temperature threshold and a temperature variable and the temperature of the second chamber being greater than a first temperature threshold, controlling the first outlet of the first valve body to be in a closed state; according to the temperature of the second chamber being between a first temperature threshold and a second temperature threshold, controlling the rotation speed of the compressor to remain at a current first rotation speed while controlling the second outlet of the first valve body to be in a fully open state, wherein the second temperature threshold is greater than the first temperature threshold; according to the temperature of the second chamber being greater than a second temperature threshold, controlling the rotation speed of the compressor to be the second rotation speed while controlling the second outlet of the first valve body to be in a fully open state; according to the temperature of the second chamber being less than a difference between a first temperature threshold and a temperature variable, controlling the rotation speed of the compressor to be the first rotation speed while controlling the second outlet of the first valve body to be in a throttling state; according to the temperature of the first chamber being greater than a third temperature threshold, controlling the first outlet of the first valve body to be in a fully open state and the second outlet to be in a closed state. 14.The control method of a refrigerator according to claim 8, wherein, The refrigerator further comprises a third chamber, and the refrigeration system further comprises a third evaporator for refrigerating the third chamber, and the control method comprises: only the second chamber has a refrigeration requirement, the first outlet and the third outlet of the first valve body are controlled to be in a closed state; according to the rotation speed of the compressor being greater than a first rotation speed threshold, the second outlet of the first valve body is controlled to be in a fully open state; according to the rotation speed of the compressor being less than or equal to the first rotation speed threshold, the second outlet of the first valve body is controlled to be in a throttling state; only the first chamber has a refrigeration requirement, the second outlet and the third outlet of the first valve body are controlled to be in a closed state; according to the rotation speed of the compressor being greater than a second rotation speed threshold, the first outlet of the first valve body is controlled to be in a fully open state; according to the rotation speed of the compressor being less than or equal to the second rotation speed threshold, the first outlet of the first valve body is controlled to be in a throttling state; when the first chamber has no refrigeration requirement, the first outlet and the second outlet of the first valve body are controlled to be in a closed state; according to the rotation speed of the compressor being greater than a third rotation speed threshold, the third outlet of the first valve body is controlled to be in a fully open state; according to the rotation speed of the compressor being less than or equal to the third rotation speed threshold, the third outlet of the first valve body is controlled to be in a throttling state; when the first chamber and the third chamber both have refrigeration requirements, the second outlet of the first valve body is controlled to be in a closed state, and the first outlet and the third outlet are both controlled to be in a fully open state. 15.The control method of a refrigerator according to claim 8, wherein, The control method further comprises: opening the first valve body before the compressor is started, and controlling the first outlet and / or the second outlet to be in a throttling state; and closing the first valve body after the compressor is stopped.

16. A refrigeration system wherein, comprises: an anti-condensation pipe; a refrigeration assembly comprising a compressor, a condenser, a first evaporator and a second evaporator; a refrigeration cycle circuit comprising a main pipeline and a first refrigerant branch, a second refrigerant branch and a second bypass branch which are in communication with the main pipeline, the first refrigerant branch and the second refrigerant branch are arranged in parallel, the first evaporator is arranged in the first refrigerant branch, the outlet of the first evaporator and the outlet of the second refrigerant branch are both in communication with the inlet of the second evaporator, the second evaporator, the compressor, the condenser and the anti-condensation pipe are arranged in the main pipeline in sequence, and the second bypass branch is arranged in parallel with the anti-condensation pipe; and A third valve body is arranged at a connection between the first refrigerant branch and the second refrigerant branch and the main pipeline, and has a second inlet, a third inlet, a sixth outlet and a seventh outlet. The second inlet is communicated with the outlet of the anti-condensation pipe. The third inlet is communicated with the second bypass branch. The sixth outlet is communicated with the first refrigerant branch. The seventh outlet is communicated with the second refrigerant branch. The sixth outlet and the seventh outlet each have a fully open state, a throttling state and a closed state. The second inlet can be selectively communicated with any one of the sixth outlet and the seventh outlet, or the third inlet can be selectively communicated with any one of the sixth outlet and the seventh outlet.

17. The refrigeration system of claim 16, wherein, The refrigeration assembly further comprises a first throttling element and / or a second throttling element. The first throttling element is arranged in the first refrigerant branch and communicated with the inlet of the first evaporator. The second throttling element is arranged in the second refrigerant branch.

18. A refrigeration system comprising a first compartment and a freezer compartment, wherein, The refrigeration system comprises: an anti-condensation pipe; a refrigeration assembly comprising a compressor, a condenser, a first evaporator and a second evaporator; a refrigeration cycle circuit comprising a main pipeline and a first refrigerant branch, a second refrigerant branch and a second bypass branch communicated with the main pipeline respectively. The first refrigerant branch and the second refrigerant branch are arranged in parallel. The first evaporator is arranged in the first refrigerant branch. The second evaporator is arranged in the second refrigerant branch. The outlet of the first evaporator and the outlet of the second evaporator are both communicated with the inlet of the compressor. The compressor, the condenser and the anti-condensation pipe are all arranged in the main pipeline. The second bypass branch is arranged in parallel with the anti-condensation pipe; and a third valve body having a second inlet, a third inlet, a sixth outlet and a seventh outlet. The second inlet is communicated with the outlet of the anti-condensation pipe. The third inlet is communicated with the second bypass branch. The sixth outlet is communicated with the first refrigerant branch. The seventh outlet is communicated with the second refrigerant branch. The sixth outlet and the seventh outlet each have a fully open state, a throttling state and a closed state. The second inlet can be selectively communicated with any one of the sixth outlet and the seventh outlet, or the third inlet can be selectively communicated with any one of the sixth outlet and the seventh outlet.

19. The refrigeration system of claim 18, wherein, The refrigeration assembly further comprises a first throttling element and / or a second throttling element. The first throttling element is arranged in the first refrigerant branch and communicated with the inlet of the first evaporator. The second throttling element is arranged in the second refrigerant branch and communicated with the inlet of the second evaporator.

20. The refrigeration system of any of claims 16 to 19, wherein, The third valve body comprises a second valve seat and a second valve block coaxially arranged, an end surface of the second valve seat is provided with the second inlet, the third inlet, the sixth outlet and the seventh outlet which are distributed in a circumferential direction, the second inlet and the third inlet are arranged on a circumference with a first length as a radius and with a center axis of the second valve seat as a center, the sixth outlet and the seventh outlet are arranged on a circumference with a second length as a radius and with the center axis of the second valve seat as a center, and the first length is greater than the second length; the sixth outlet comprises a fourth through hole and a fourth arc-shaped groove in communication with the fourth through hole, and the seventh outlet comprises a fifth through hole and a fifth arc-shaped groove in communication with the fifth through hole; The second valve block comprises a second connecting portion and fourth and fifth notches arranged on the second connecting portion, the second connecting portion is attached to the end surface of the second valve seat and can rotate relative to the second valve seat, so that the fourth notch can selectively communicate with any one of the second inlet and the third inlet, and the fifth notch can selectively communicate with any one of the sixth outlet and the seventh outlet, wherein, when the fifth notch communicates with the fourth through hole, the sixth outlet is in a fully open state; when the fifth notch communicates with the fifth through hole, the seventh outlet is in a fully open state; when the fifth notch communicates with the fourth arc-shaped groove, the sixth outlet is in a throttling state; when the fifth notch communicates with the fifth arc-shaped groove, the seventh outlet is in a throttling state; when the second connecting portion covers the sixth outlet except the fifth notch, the sixth outlet is in a closed state; and when the second connecting portion covers the seventh outlet except the fifth notch, the seventh outlet is in a closed state.

21. The refrigeration system of claim 20, wherein, A filter device is further included, an inlet of the filter device is in communication with the condenser, a first output end of the filter device is in communication with an inlet of the anti-condensation pipe, and a second output end of the filter device is in communication with the second bypass branch.

22. A refrigerator, wherein, It comprises: a cabinet, wherein a first chamber and a second chamber are arranged in the cabinet; the first evaporator of the refrigeration system is arranged in the first chamber, and the second evaporator is arranged in the second chamber; a sensor assembly for detecting environmental information of the refrigerator; and a controller electrically connected with the sensor assembly, the compressor of the refrigeration system and a third valve body, respectively, and configured to control the third valve body and the compressor to operate according to the environmental information.

23. A control method of a refrigerator applied to the refrigerator of claim 22, wherein, The control method comprises: obtaining environmental information of the refrigerator; controlling the third valve body and the compressor to operate according to the environmental information. 24.The control method of a refrigerator according to claim 23, wherein, The second evaporator of the refrigerator is arranged in a main pipeline, the environmental information comprises an environmental temperature and an environmental relative humidity of the refrigerator, a temperature of the first chamber and a temperature of the second chamber, only the second chamber has a refrigeration demand, and the controlling the third valve body and the compressor to operate according to the environmental information comprises: According to the ambient temperature being greater than an ambient temperature threshold value, or according to the ambient relative humidity being greater than a humidity threshold value, the second inlet of the third valve body is controlled to be communicated with the seventh outlet, and the third inlet is controlled to be closed with the sixth outlet; According to the rotation speed of the compressor being greater than a rotation speed threshold value, or according to the temperature of the freezing chamber being greater than a first temperature threshold value, the seventh outlet is controlled to be in a fully open state; According to the rotation speed of the compressor being less than or equal to a rotation speed threshold value, or according to the temperature of the second chamber being less than or equal to a first temperature threshold value, the seventh outlet is controlled to be in a throttling state. 25.The control method of a refrigerator according to claim 23, wherein, According to the ambient temperature being less than or equal to an ambient temperature threshold value, or according to the ambient relative humidity being less than or equal to a humidity threshold value, the third inlet of the third valve body is controlled to be communicated with the sixth outlet, and the second inlet is controlled to be closed with the seventh outlet; According to the rotation speed of the compressor being greater than a rotation speed threshold value, or according to the temperature of the second chamber being greater than a first temperature threshold value, the seventh outlet is controlled to be in a fully open state; According to the rotation speed of the compressor being less than or equal to a rotation speed threshold value, or according to the temperature of the second chamber being less than or equal to a first temperature threshold value, the seventh outlet is controlled to be in a throttling state. According to the ambient temperature being greater than an ambient temperature threshold value, or according to the ambient relative humidity being greater than a humidity threshold value, the second inlet of the third valve body is controlled to be communicated with the seventh outlet, and the third inlet is controlled to be closed with the sixth outlet; 26.The control method of a refrigerator according to claim 23, wherein, According to the rotation speed of the compressor being greater than a rotation speed threshold value, or according to the temperature of the first chamber being greater than a second temperature threshold value, the sixth outlet is controlled to be in a fully open state; According to the rotation speed of the compressor being less than or equal to a rotation speed threshold value, or according to the temperature of the first chamber being less than or equal to a second temperature threshold value, the sixth outlet is controlled to be in a throttling state. According to the ambient temperature being less than or equal to an ambient temperature threshold value, or according to the ambient relative humidity being less than or equal to a humidity threshold value, the third inlet of the third valve body is controlled to be communicated with the sixth outlet, and the second inlet is controlled to be closed with the seventh outlet; According to the rotation speed of the compressor being greater than a rotation speed threshold value, or according to the temperature of the first chamber being greater than a second temperature threshold value, the sixth outlet is controlled to be in a fully open state; 27.The control method of a refrigerator according to claim 23, wherein, According to the rotation speed of the compressor being less than or equal to a rotation speed threshold value, or according to the temperature of the first chamber being less than or equal to a second temperature threshold value, the sixth outlet is controlled to be in a throttling state. According to the ambient temperature being greater than an ambient temperature threshold value, or according to the ambient relative humidity being greater than a humidity threshold value, the second inlet of the third valve body is controlled to be communicated with the seventh outlet, and the third inlet is controlled to be closed with the sixth outlet; According to the rotation speed of the compressor being greater than a rotation speed threshold value, or according to the temperature of the first chamber being greater than a second temperature threshold value, the sixth outlet is controlled to be in a fully open state; According to the rotation speed of the compressor being less than or equal to a rotation speed threshold value, or according to the temperature of the first chamber being less than or equal to a second temperature threshold value, the sixth outlet is controlled to be in a throttling state. 28.The control method of a refrigerator according to claim 23, wherein, The second evaporator of the refrigerator is arranged in the second refrigerant branch, the ambient information comprises an ambient temperature or an ambient relative humidity of the refrigerator, a temperature of the first chamber and a temperature of the second chamber, and the controlling of the third valve body and the compressor according to the ambient information comprises: According to the ambient temperature being greater than an ambient temperature threshold value, or according to the ambient relative humidity being greater than a humidity threshold value, the second inlet of the third valve body is controlled to be communicated with the seventh outlet, and the third inlet is controlled to be closed with the sixth outlet; According to the rotation speed of the compressor being greater than a rotation speed threshold value, or according to the temperature of the first chamber being greater than a second temperature threshold value, the sixth outlet is controlled to be in a fully open state; According to the rotation speed of the compressor being less than or equal to a rotation speed threshold value, or according to the temperature of the first chamber being less than or equal to a second temperature threshold value, the sixth outlet is controlled to be in a throttling state. According to the ambient temperature being greater than an ambient temperature threshold, or according to the ambient relative humidity being greater than a humidity threshold, a second inlet of the third valve body is controlled to be open, and a third inlet is controlled to be closed; According to the ambient temperature being less than or equal to an ambient temperature threshold, or according to the ambient relative humidity being less than or equal to a humidity threshold, the third inlet of the third valve body is controlled to be open, and the second inlet is controlled to be closed. 29.The control method of a refrigerator according to claim 28, wherein, According to the first chamber having a refrigeration demand, the second inlet is controlled to be open to the sixth outlet, or the third inlet is controlled to be open to the sixth outlet, the controlling the third valve body and the compressor according to the ambient information comprising: The temperature of the first chamber being less than a third temperature threshold, the sixth outlet is controlled to be in a throttling state; The temperature of the first chamber being greater than or equal to a third temperature threshold, according to the rotation speed of the compressor being greater than a rotation speed threshold, or according to the temperature of the first chamber being greater than a fourth temperature threshold, the sixth outlet is controlled to be in a full open state; The temperature of the first chamber being greater than or equal to a third temperature threshold, according to the rotation speed of the compressor being less than or equal to a rotation speed threshold, or according to the temperature of the first chamber being less than or equal to a fourth temperature threshold, the sixth outlet is controlled to be in a throttling state, wherein the fourth temperature threshold is greater than the third temperature threshold. 30.The control method of a refrigerator according to claim 28, wherein, According to the second chamber having a refrigeration demand, the second inlet is controlled to be open to the seventh outlet, or the third inlet is controlled to be open to the seventh outlet, the controlling the third valve body and the compressor according to the ambient information comprising: The temperature of the second chamber being less than a fifth temperature threshold, the seventh outlet is controlled to be in a throttling state; The temperature of the second chamber being greater than or equal to a fifth temperature threshold, according to the rotation speed of the compressor being greater than a rotation speed threshold, or according to the temperature of the second chamber being greater than a sixth temperature threshold, the seventh outlet is controlled to be in a full open state; The temperature of the second chamber being greater than or equal to a fifth temperature threshold, according to the rotation speed of the compressor being less than or equal to a rotation speed threshold, or according to the temperature of the second chamber being less than or equal to a sixth temperature threshold, the seventh outlet is controlled to be in a throttling state, wherein the sixth temperature threshold is greater than the fifth temperature threshold. 31.The control method of a refrigerator according to claim 23, wherein, The control method further comprises: Turning on the third valve body before the compressor is operated, and controlling the sixth outlet and the seventh outlet to be in a full open state; After the compressor is stopped, the third valve body is turned off.

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