Refrigeration system, refrigerator, and control method therefor

Abstract

The present application relates 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 first evaporator and a second evaporator; an anti-condensation pipe; a refrigeration circuit, wherein the first evaporator is disposed at a first refrigerant branch, and the anti-condensation pipe is arranged in parallel with a bypass branch; and a valve body having a first inlet, a second inlet, a first outlet, and a second outlet, the first inlet being in communication with an outlet of the anti-condensation pipe, the second inlet being in communication with the bypass branch, the first outlet being in communication with the first refrigerant branch, the second outlet being in communication with a second refrigerant branch, and the first outlet and the second outlet each having a fully open state, a throttling state, and a closed state. The present application can achieve a balance among condensation heat management, cooling rate, and energy-saving operation by using only a single valve body. The control logic is simple, which helps improve the operational stability of the system.

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. 202411369278.6, filed on September 27, 2024, entitled “Refrigeration system, refrigerator and control method thereof” with the China National Intellectual Property Office. TECHNICAL FIELD

[0004] 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

[0005] The temperature rise of a dual-system refrigerator is high when initially powered on or when the user frequently opens and closes the door, and the heat load of the cabinet is large, so the system refrigeration capacity needs to be increased to achieve rapid cooling, which is generally achieved by increasing the compressor operating frequency to increase the mass flow rate. However, after the refrigerator is running stably, only a small amount of cooling is needed to maintain temperature balance. In addition, in order to prevent condensation, a condensation prevention pipe is generally arranged in the periphery of the inner tank of the freezer compartment of the refrigerator, but in the case of a low-humidity environment, condensation will not occur, and the refrigerant needs to flow without passing through the condensation prevention pipe to reduce the heat load of the cabinet.

[0006] In order to achieve a balance between cooling speed and energy-saving operation as much as possible, the system generally sets multiple valve bodies, and the control logic is complex, which affects the stability of the system operation. SUMMARY

[0007] The purpose of the present application is to provide a refrigeration system, a refrigerator and a control method thereof, which can achieve a balance in condensation heat management, cooling speed and energy-saving operation by using only one valve body, and the control logic is simple, which is conducive to improving the stability of the system operation.

[0008] In a first 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 bypass branch, which are respectively communicated with the main pipe, 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 communicated with an inlet of the second evaporator, the second evaporator, the compressor, the condenser, and the anti-condensation pipe are sequentially arranged in the main pipe, and the bypass branch is arranged in parallel with the anti-condensation pipe; and a valve body arranged at a connection between the first refrigerant branch and the second refrigerant branch and the main pipe, the valve body has a first inlet, a second inlet, a first outlet, and a second outlet, the first inlet is communicated with an outlet of the anti-condensation pipe, the second inlet is communicated with the bypass branch, the first outlet is communicated with the first refrigerant branch, and the second outlet is communicated with the second refrigerant branch, the first outlet and the second outlet each have a fully open state, a throttling state, and a closed state, wherein the first inlet is selectively communicated with any one of the first outlet and the second outlet, or the second inlet is selectively communicated with any one of the first outlet and the second outlet.

[0009] In a second aspect, the application provides a refrigeration system, a refrigerator comprising a first chamber and a freezing 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 bypass branch, which are respectively communicated with the main pipe, 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 both communicated with an inlet of the compressor, the compressor, the condenser, and the anti-condensation pipe are all arranged in the main pipe, and the bypass branch is arranged in parallel with the anti-condensation pipe; and a valve body having a first inlet, a second inlet, a first outlet, and a second outlet, the first inlet is communicated with an outlet of the anti-condensation pipe, the second inlet is communicated with the bypass branch, the first outlet is communicated with the first refrigerant branch, and the second outlet is communicated with the second refrigerant branch, the first outlet and the second outlet each have a fully open state, a throttling state, and a closed state, wherein the first inlet is selectively communicated with any one of the first outlet and the second outlet, or the second inlet is selectively communicated with any one of the first outlet and the second outlet.

[0010] In a third aspect, the application provides a refrigerator, comprising a cabinet, a freezing chamber and a first chamber arranged in the cabinet; a refrigeration system of any one of the embodiments of the application, a first evaporator of the refrigeration system is arranged in the first chamber, and a second evaporator is arranged in the freezing chamber; a sensor assembly for detecting environmental information of the refrigerator; and a controller electrically connected with the sensor assembly, the compressor, and the valve body of the refrigeration system, the controller is configured to control the valve body and the compressor to operate according to the environmental information.

[0011] In a fourth aspect, the application provides a control method of a refrigerator. The control method is applied to the refrigerator of the embodiments of the application and comprises: acquiring environment information of the refrigerator; and controlling a valve body and a compressor to operate according to the environment information.

[0012] According to the refrigeration system, the refrigerator and the control method thereof provided in the embodiments of the 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 bypass branch, and the two-in and two-out valve body with the functions of switching and throttling is connected with each branch, so that the valve body and the compressor can be controlled to operate according to the environment information of the refrigerator. Since only one 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.

[0013] The above description is only a summary of the technical solutions of the application. In order to make the technical means of the application more clear, the application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0014] 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 intended to depict only preferred embodiments of the application, and therefore should not be considered to narrow the scope of the present application. Furthermore, the drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the application. In the drawings:

[0015] 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 intended to depict only preferred embodiments of the application, and therefore should not be considered to narrow the scope of the present application. Furthermore, the drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the application. In the drawings:

[0016] FIG. 1 is a structural schematic diagram of a refrigeration system according to an embodiment of the application;

[0017] FIG. 2 is an exploded structural schematic diagram of a valve body in the refrigeration system shown in FIG. 1;

[0018] FIG. 3 is a structural schematic diagram of a refrigeration system according to another embodiment of the application;

[0019] FIG. 4 is a structural schematic diagram of a refrigerator according to an embodiment of the application;

[0020] FIG. 5 is a flow chart of a control method of a refrigerator according to an embodiment of the application;

[0021] FIG. 6 is a detailed flow chart of a control method of a refrigerator according to an embodiment of the application;

[0022] FIG. 7 is a detailed flowchart of a control method of a refrigerator according to an embodiment of the present application.

[0023] 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; 2: anti-condensation tube; 3: refrigeration cycle circuit; 30: main pipe; 31: first refrigerant branch; 32: second refrigerant branch; 33: bypass branch; 4: valve body; 41: first inlet; 42: second inlet; 43: first outlet; 431: first through hole; 432: first arc-shaped groove; 44: second outlet; 441: second through hole; 442: second arc-shaped groove; 45: valve seat; 46: valve block; 460: connecting portion; 461: first notch; 462: second notch; 5: filter device; 100: refrigerator; 101: first compartment; 102: freezing compartment. DETAILED DESCRIPTION

[0024] Example embodiments of the present application will be described more fully hereinafter with reference to the accompanying drawings. While example embodiments of the present application are shown in the drawings, it is understood that the present application can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.

[0025] 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 "comprises", "comprising", "includes", "including" and "has" 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, unless specifically identified as an order dependent step. It is also to be understood that additional or alternative steps can be employed.

[0026] 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. Unless the context clearly indicates otherwise, terms such as "first", "second" and the like used herein do not imply a sequence or an order, but rather are used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. 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 example embodiments.

[0027] For ease of description, spatial relative terms can be used herein to describe the relationship of one element or feature to another element or feature as shown in the figures, such as "inner", "outer", "inward", "outward", "lower", "down", "upper", "up", etc. Such spatial relative terms are intended to include 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, an element 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 include both an up and down orientation. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0028] FIG. 1 is a structural schematic diagram of a refrigeration system 10 according to an embodiment of the present application.

[0029] Referring to FIG. 1, the present embodiment 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 valve body 4. The refrigeration system 10 can be applied to various refrigeration devices such as a refrigerator, a freezer, a cold storage, etc. For ease of description, the refrigeration system 10 is described by way of example as being applied to a refrigerator in each embodiment of the present application. The refrigeration assembly 1 includes a compressor 11, a condenser 12, a first evaporator 13 and a second evaporator 14.

[0030] The anti-condensation pipe 2 can be arranged in a sandwich layer of a door frame of a refrigerator, or at each cross beam and vertical beam of the door frame. High-temperature liquid refrigerant in the anti-condensation pipe 2 flows through each cross beam and vertical beam, etc., 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 or the like, and has high corrosion resistance, thereby prolonging the service life.

[0031] The refrigeration cycle circuit 3 comprises a main pipeline 30, a first refrigerant branch 31, a second refrigerant branch 32 and a bypass branch 33 in communication with the main pipeline 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 pipeline 30 in sequence, and the bypass branch 33 is arranged in parallel with the anti-condensation pipe 2.

[0032] The 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 valve body 4 has a first inlet 41, a second inlet 42, a first outlet 43 and a second outlet 44, the first inlet 41 is in communication with the outlet of the condenser 12, the second inlet 42 is in communication with the bypass branch 33, the first outlet 43 is in communication with the first refrigerant branch 31, and the second outlet 44 is in communication with the second refrigerant branch 32, the first outlet 43 and the second outlet 44 each have a full opening state, a throttling state and a closed state, and the valve body 4 is configured to selectively conduct the first inlet 41 to any one of the first outlet 43 and the second outlet 44, or to selectively conduct the second inlet 42 to any one of the first outlet 43 and the second outlet 44.

[0033] For a double-system refrigerator with the first evaporator 13 and the second evaporator 14, when the power is turned on or the refrigerator door is frequently opened and closed, 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 simultaneously have a rapid refrigeration request, a large-flow throttling element is generally 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, thereby causing uneven distribution of refrigerant flow, and the refrigerant flow cannot be reasonably distributed according to the refrigeration demands of the first compartment and the second compartment, thereby increasing the operating energy consumption.

[0034] In addition, in a high-temperature and high-humidity environment, in order to prevent condensation, an anti-condensation pipe 2 is generally arranged in the tank of the periphery of the freezing compartment of the refrigerator, but condensation does not occur in a low-humidity environment, and if the refrigerant flows through the anti-condensation pipe 2, the system heat load is increased. In order to achieve the best balance between cooling speed and energy-saving operation, the system generally has multiple valve bodies, and the control logic is complex, which affects the stability of the system operation. Moreover, in the related art, the valve body for the refrigerator generally 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 generally has one inlet and one outlet, and cannot realize flow path switching.

[0035] To this end, in the embodiment of the present application, the valve body 4 has a first inlet 41, a second inlet 42, a first outlet 43 and a second outlet 44, the first inlet 41 is in communication with the outlet of the condenser 12, the second inlet 42 is in communication with the bypass branch 33, the first outlet 43 is in communication with the first refrigerant branch 31, the second outlet 44 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.

[0036] The refrigeration system 10 of the embodiment of the present application needs to be managed to prevent condensation in a high-temperature and high-humidity environment, the first inlet 41 of the valve body 4 is opened, and the second inlet 42 is closed. When the first compartment has a refrigeration demand, the first inlet 41 of the valve body 4 is in communication with the first outlet 43, and the second inlet 42 and the second outlet 44 are closed. The high-temperature and high-pressure gas discharged from the compressor 11 becomes liquid refrigerant after being condensed and radiated by the condenser 12. The inlet of the anti-condensation pipe 2 is connected to the outlet of the condenser 12, and the heat of the high-temperature liquid refrigerant is used to prevent condensation of the anti-condensation pipe 2. Then, the refrigerant flows through the flow channel of the first inlet 41 and the first outlet 43 of the valve body 4, and the low-temperature and low-pressure liquid evaporates and absorbs heat in the first evaporator 13, and then a part of the low-temperature and low-pressure gas and the other part of the low-temperature and low-pressure liquid enter the second evaporator 14 to evaporate and absorb heat, and then the low-temperature and low-pressure gas is generated to take away the heat of the second compartment, and then the low-temperature and low-pressure gas is returned to the compressor 11 to be compressed into high-temperature and high-pressure gas, and a refrigeration cycle is completed. When only the second compartment has a refrigeration demand, the first outlet 43 of the valve body 4 is closed, the second outlet 44 is opened, and the first inlet 41 is in communication with the second outlet 44. After the high-temperature and high-pressure gas discharged from the compressor 11 is condensed and radiated by the condenser 12 to become liquid refrigerant, and the anti-condensation pipe 2 is prevented from condensation, the low-temperature and low-pressure liquid evaporates and absorbs heat in the second evaporator 14, and then the low-temperature and low-pressure gas is generated to take away the heat of the second compartment, and then the low-temperature and low-pressure gas is returned to the compressor 11 to be compressed into high-temperature and high-pressure gas, and a refrigeration cycle is completed.

[0037] In a medium-low humidity environment, when there is no need for condensation management, the first inlet 41 of the valve body 4 is closed, and the second inlet 42 is opened. Then, according to whether the first compartment has a refrigeration demand or only the second compartment has a refrigeration demand, the second inlet 42 is selectively in communication with the first outlet 43 or the second outlet 44.

[0038] The first outlet 43 and the second outlet 44 of the valve body 4 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 valve body 4 also has a throttling function. At this time, the first outlet 43 and the second outlet 44 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 first outlet 43 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 43 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 second outlet 44 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. Therefore, by using the two-inlet and two-outlet valve body 4, whether to perform condensation heat management can be selected according to the external environmental conditions, and the refrigerant flow can be reasonably distributed according to the refrigeration demands 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.

[0039] The refrigeration system 10 provided by the embodiment of the present application can realize balance between condensation heat management, cooling speed and energy-saving operation by using only one valve body, and the control logic is simple, which is beneficial to improving the stability of system operation.

[0040] FIG. 2 is an exploded structural schematic view of the valve body 4 in the refrigeration system 10 shown in FIG. 1.

[0041] In some embodiments, the valve body 4 includes a valve seat 45 and a valve block 46 arranged coaxially, the end surface of the valve seat 45 is provided with a first inlet 41, a second inlet 42, a first outlet 43 and a second outlet 44 distributed in a circumferential direction, the first inlet 41 and the second inlet 42 are arranged on a circumference with the center axis of the valve seat 45 as the center and with a first length as the radius, the first outlet 43 and the second outlet 44 are arranged on a circumference with the center axis of the valve seat 45 as the center and with a second length as the radius, and the first length is greater than the second length; the first outlet 43 includes a first through hole 431 and a first arc-shaped groove 432 in communication with the first through hole 431, and the second outlet 44 includes a second through hole 441 and a second arc-shaped groove 442 in communication with the second through hole 441.

[0042] The valve block 46 comprises a connecting portion 460 and first and second notches 461 and 462 provided on the connecting portion 460, the connecting portion 460 is in abutment with the end face of the valve seat 45 and can rotate relative to the valve seat 45, so that the first notch 461 can selectively communicate with any one of the first inlet 41 and the second inlet 42, and the second notch 462 can selectively communicate with any one of the first outlet 43 and the second outlet 44; when the second notch 462 communicates with the first through hole 431, the first outlet 43 is in a fully open state; when the second notch 462 communicates with the second through hole 441, the second outlet 44 is in a fully open state; when the second notch 462 communicates with the first arc-shaped groove 432, the first outlet 43 is in a throttling state; when the second notch 462 communicates with the second arc-shaped groove 442, the second outlet 44 is in a throttling state; when the connecting portion 460 covers the first outlet 43 except for the second notch 462, the first outlet 43 is in a closed state; when the connecting portion 460 covers the second outlet 44 except for the second notch 462, the second outlet 44 is in a closed state.

[0043] Referring to FIG. 2, the end face of the valve seat 45 is a flat matching face, and the valve block 46 can be in abutment with the end face of the valve seat 45 and rotate at an angle. The valve body 4 further comprises a first inlet pipe, a second inlet pipe, a first outlet pipe and a second outlet pipe fixedly connected with the valve seat 45, the first inlet pipe communicates with the first inlet 41, the second inlet pipe communicates with the second inlet 42, the first outlet pipe communicates with the first outlet 43, and the second outlet pipe communicates with the second outlet 44, and the first inlet pipe, the second inlet pipe, the first outlet pipe and the second outlet pipe respectively communicate with the refrigeration cycle circuit 3 to meet the needs of the refrigeration system 10.

[0044] The valve body 4 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 valve block 46 to rotate relative to the valve seat 45, and the connecting portion 460 of the valve block 46 is used for rotating matching with the end face of the valve seat 45, when the connecting portion 460 rotates in a first direction, the first notch 461 communicates with the first inlet 41; when the connecting portion 460 rotates in a second direction, the first notch 461 communicates with the second inlet 42, and the first direction is opposite to the second direction.

[0045] When the connecting portion 460 rotates to cover the first outlet 43 except for the second gap 462, the first outlet 43 is in a closed state, and the refrigerant cannot flow out of the first outlet 43. Conversely, when the connecting portion 460 rotates to uncover the first outlet 43, if the second gap 462 corresponds to the first through hole 431 of the first outlet 43, the first outlet 43 is in a fully open state at this time, and the refrigerant directly flows out of the first through hole 431; if the second gap 462 corresponds to the first arc-shaped groove 432 of the first outlet 43, the first outlet 43 is in a throttling state at this time, and the refrigerant enters the first through hole 431 and then flows out of the first arc-shaped groove 432. Similarly, when the connecting portion 460 covers the second outlet 44, the second outlet 44 is in a closed state; when the connecting portion 460 rotates to communicate with the second through hole 441 or the second arc-shaped groove 442 of the second outlet 44, the fully open state or the throttling state of the second outlet 44 can be achieved.

[0046] It can be understood that the valve body 4 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.

[0047] 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.

[0048] 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 communicated by the first inlet 41 and the second outlet 44 of the valve body 4, and the first throttling element 15 and the second throttling element 16 can respectively hinder, restrict flow and reduce 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.

[0049] In some embodiments, the refrigeration system 10 further comprises a filtering device 5, the inlet of the filtering device 5 communicates with the condenser 12, the first output end of the filtering device 5 communicates with the inlet of the anti-condensation pipe 2, and the second output end of the filtering device 5 communicates with the bypass branch 33.

[0050] The filtering device 5 is arranged in the main pipeline 30 and located between the condenser 12 and the anti-condensation pipe 2, and the filtering device 5 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 bypass branch 33.

[0051] Fig. 3 is a structural schematic diagram of the refrigeration system 10 according to another embodiment of the present application.

[0052] Referring to Fig. 3, the refrigeration system 10 in the embodiment of the present application is similar in structure to the refrigeration system 10 shown in Fig. 1, except that the first evaporator 13 and the second evaporator 14 are arranged in parallel.

[0053] Specifically, the refrigeration system 10 comprises the refrigeration assembly 1, the anti-condensation pipe 2, the refrigeration cycle circuit 3 and the valve body 4. 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 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 bypass branch 33 is arranged in parallel with the anti-condensation pipe 2.

[0054] The valve body 4 has a first inlet 41, a second inlet 42, a first outlet 43 and a second outlet 44, the first inlet 41 is communicated with the outlet of the condenser 12, the second inlet 42 is communicated with the bypass branch 33, the first outlet 43 is communicated with the first refrigerant branch 31, the second outlet 44 is communicated with the second refrigerant branch 32, the first outlet 43 and the second outlet 44 both have a fully open state, a throttling state and a closed state, and the first inlet 41 and the second inlet 42 are selectively conducted with the first outlet 43 or the second outlet 44, respectively.

[0055] In the high temperature and high humidity environment condition, anti-condensation management is needed, the first inlet 41 of the valve body 4 is opened and the second inlet 42 is closed.

[0056] The refrigeration system 10 in the embodiment of the present application needs anti-condensation management in the high temperature and high humidity environment condition, the first inlet 41 of the valve body 4 is opened and the second inlet 42 is closed. According to the different conditions that the first chamber and the second chamber have refrigeration demand simultaneously or have refrigeration demand respectively, the first inlet 41 of the valve body 4 is selectively conducted with the first outlet 43 or the second outlet 44. In the low humidity environment condition, anti-condensation management is not needed, the first inlet 41 of the valve body 4 is closed and the second inlet 42 is opened. Then, according to the different conditions that the first chamber and the second chamber have refrigeration demand simultaneously or have refrigeration demand respectively, the second inlet 42 is selectively conducted with the first outlet 43 or the second outlet 44.

[0057] The first outlet 43 and the second outlet 44 of the valve body 4 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 valve body 4 also has a throttling function. At this time, the first outlet 43 and the second outlet 44 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 first outlet 43 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 43 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 second outlet 44 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 valve body 4 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 system operating power consumption is reduced while the condensation heat management and rapid cooling are realized.

[0058] 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.

[0059] 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 first inlet 41 and the first outlet 43 or the second outlet 44 of the valve body 4 are in communication, 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.

[0060] FIG. 4 is a structural schematic diagram of a refrigerator according to an embodiment of the present application.

[0061] Referring to FIG. 4, the refrigerator provided in 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.

[0062] The box is 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 valve body 4 of the refrigeration system 10 respectively, and the controller is configured to control the valve body 4 and the compressor 11 to operate according to the environmental information.

[0063] Fig. 5 is a flow block diagram of a control method of a refrigerator according to an embodiment of the present application.

[0064] Referring to Fig. 5, 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.

[0065] Step S1: obtaining environmental information of the refrigerator;

[0066] Step S2: controlling the valve body 4 and the compressor 11 to operate according to the environmental information.

[0067] Fig. 6 is a detailed flow block diagram of a control method of a refrigerator according to an embodiment of the present application.

[0068] 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. 1, 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 bypass branch 33, and the valve body 4 with on-off and throttling functions is combined with the throttling element, so that the valve body 4 and the compressor 11 can be controlled to work according to the environmental information of the refrigerator.

[0069] As shown in Fig. 1, in order to facilitate the description of the conduction and disconnection of each inlet and outlet of the valve body 4, the position of the first inlet 41 is marked as "A", the position of the second inlet 42 is marked as "B", the position of the first outlet 43 is marked as "C", and the position of the second outlet 44 is marked as "D".

[0070] As shown in Fig. 6, specifically, only the second chamber 102 has a refrigeration demand, and step S2, controlling the valve body 4 and the compressor 11 to operate according to the environmental information comprises the following steps S21-S21:

[0071] 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 first inlet 41 and the second outlet 44 of the valve body 4 to be in conduction, and the second inlet 42 and the first outlet 43 to be closed;

[0072] 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 second outlet 44 is controlled to be in the fully open state;

[0073] 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 second outlet 44 is controlled to be in the throttling state.

[0074] In this embodiment, when only the second chamber 102 has a refrigeration demand, first, 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, it is determined that anti-condensation management is needed, the first inlet 41 and the second outlet 44 of the valve body 4 are controlled to be in conduction, and the second inlet 42 and the first outlet 43 are controlled to be closed, that is, AD is in conduction and BC is closed. Then, according to the rotation speed of the compressor 11, it is determined that the second outlet 44 of the valve body 4 is in the fully open state for large-flow refrigeration to achieve rapid cooling, or in the throttling state for small-flow refrigeration to achieve energy-saving operation.

[0075] In some embodiments, according to only the second chamber 102 having a refrigeration demand, step S2, according to the environmental information, the valve body 4 and the compressor 11 are controlled to operate, including:

[0076] 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 first inlet 41 and the first outlet 43 of the valve body 4 are controlled to be closed, and the second inlet 42 and the second outlet 44 are controlled to be in conduction;

[0077] 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 second outlet 44 is controlled to be in the fully open state;

[0078] 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 second outlet 44 is controlled to be in the throttling state.

[0079] In this embodiment, when only the second chamber 102 has a refrigeration demand, first, 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, it is determined that anti-condensation management is not needed, the first inlet 41 and the first outlet 43 of the valve body 4 are controlled to be closed, and the second inlet 42 and the second outlet 44 are controlled to be in conduction, that is, AC is in conduction and BD is closed, to reduce the power consumption of the system. Then, according to the rotation speed of the compressor 11, it is determined that the second outlet 44 of the valve body 4 is in the fully open state for large-flow refrigeration to achieve rapid cooling, or in the throttling state for small-flow refrigeration to achieve energy-saving operation.

[0080] In some embodiments, according to the first chamber 101 having a refrigeration demand, step S2, controlling the valve body 4 and the compressor 11 to operate according to the environmental information includes:

[0081] 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 first inlet 41 of the valve body 4 to be in communication with the first outlet 43, and the second inlet 42 to be closed with the second outlet 44;

[0082] 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 first outlet 43 to be in a fully open state;

[0083] 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 first outlet 43 to be in a throttling state.

[0084] In this embodiment, when the first chamber 101 has a refrigeration demand, it is first determined whether anti-condensation management is required according to the environmental temperature being greater than an environmental temperature threshold T or the environmental relative humidity being greater than a humidity threshold Th, and the first inlet 41 of the valve body 4 is controlled to be in communication with the first outlet 43, and the second inlet 42 is controlled to be closed with the second outlet 44, 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 first outlet 43 of the valve body 4 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.

[0085] In some embodiments, according to the first chamber 101 having a refrigeration demand, step S2, controlling the valve body 4 and the compressor 11 to operate according to the environmental information includes:

[0086] 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 second inlet 42 of the valve body 4 to be in communication with the first outlet 43, and the first inlet 41 to be closed with the second outlet 44;

[0087] 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 first outlet 43 to be in a fully open state;

[0088] 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 first outlet 43 to be in a throttling state.

[0089] In this embodiment, when the first chamber 101 has a cooling demand, it is first determined that anti-condensation management is not required based on whether the ambient temperature is less than or equal to the ambient temperature threshold T or the ambient relative humidity is less than or equal to the humidity threshold Th. The second inlet 42 and the first outlet 43 of the control valve body 4 are then connected, while the first inlet 41 and the second outlet 44 are closed, i.e., BC is connected and AD is closed, reducing system power consumption. Then, based on the speed of the compressor 11, it is determined whether the first outlet 43 of the control valve body 4 is fully open for high-flow cooling to achieve rapid temperature reduction, or in a throttling state for low-flow cooling to achieve energy-saving operation.

[0090] Figure 7 is a detailed flowchart of a refrigerator control method according to an embodiment of this application.

[0091] In some embodiments, the second evaporator 14 of the refrigerator is disposed in the second refrigerant branch 32. The environmental information includes the ambient temperature or relative humidity of the refrigerator, the temperature of the first compartment 101, and the temperature of the second compartment 102. At this time, the structure of the refrigeration system 10 is shown in FIG3. The first evaporator 13 and the second evaporator 14 are disposed in parallel in the refrigeration cycle loop 3. The anti-condensation pipe 2 is disposed in parallel with the bypass branch 33. At the same time, a valve body 4 with on / off and throttling functions is used in combination with a throttling element, so that the operation of the valve body 4 and the compressor 11 can be controlled according to the environmental information of the refrigerator.

[0092] As shown in Figure 3, in order to facilitate the description of the opening and closing of each inlet and outlet of the valve body 4, the position of the first inlet 41 is marked as "A", the position of the second inlet 42 is marked as "B", the position of the first outlet 43 is marked as "C", and the position of the second outlet 44 is marked as "D".

[0093] As shown in Figure 7, specifically, step S2, controlling the operation of valve body 4 and compressor 11 based on environmental information, includes:

[0094] Step S21”: Based on the ambient temperature being greater than the ambient temperature threshold T, or based on the ambient relative humidity being greater than the humidity threshold Th, control the first inlet 41 of the valve body 4 to open and the second inlet 42 to close.

[0095] Step S22”: Based on the ambient temperature being less than or equal to the ambient temperature threshold T, or based on the ambient relative humidity being less than or equal to the humidity threshold Th, the second inlet 42 of the control valve body 4 is turned on, and the first inlet 41 is turned off.

[0096] In this embodiment, the system first determines whether condensation heat management is required based on whether the ambient temperature is greater than the ambient temperature threshold T or whether the ambient relative humidity is greater than the humidity threshold Th. Then, it controls the switching between the first inlet 41 and the second inlet 42 of the valve body 4, and then determines the cooling demand of the first compartment 101 and the second compartment 102.

[0097] In some embodiments, according to the first chamber has refrigeration needs, the first inlet 41 and the first outlet 43 are communicated, or the second inlet 42 and the first outlet 43 are communicated, step S2, the valve body 4 and the compressor 11 operation according to the environmental information control includes:

[0098] Step S23'': the temperature of the first chamber 101 is less than the third temperature threshold T3, and the first outlet 43 is controlled to be in the throttling state;

[0099] Step S24'': the temperature of the first chamber 101 is greater than or equal to the third temperature threshold T3, according to the rotation speed of the compressor 11 is greater than the rotation speed threshold f1, or according to the temperature of the first chamber 101 is greater than the fourth temperature threshold T4, the first outlet 43 is controlled to be in the full open state;

[0100] Step S25'': the temperature of the first chamber 101 is greater than or equal to the third temperature threshold T3, according to the rotation speed of the compressor 11 is less than or equal to the rotation speed threshold f1, or according to the temperature of the first chamber 101 is less than or equal to the fourth temperature threshold T4, the first outlet 43 is controlled to be in the throttling state, and the fourth temperature threshold T4 is greater than the third temperature threshold T3.

[0101] In the embodiment, the first evaporator 13 of the first chamber 101 and the second evaporator 14 of the second chamber 102 are controlled respectively. If the first chamber 101 has no refrigeration needs, or although there are refrigeration needs, the running speed of the compressor 11 is small, the first outlet 43 is controlled to be in the throttling state. At this time, according to whether there is anti-condensation needs, the first inlet 41 and the first outlet 43 can be communicated, that is, AC is communicated, or the second inlet 42 and the first outlet 43 are communicated, that is, BC is communicated. When the refrigeration needs of the first chamber 101 are urgent, the first outlet 43 is controlled to be in the full open state, and at this time, according to whether there is anti-condensation needs, the first inlet 41 and the first outlet 43 can be communicated, that is, AC is communicated, or the second inlet 42 and the first outlet 43 are communicated, that is, BC is communicated.

[0102] In some embodiments, the second chamber 102 has refrigeration needs, the first inlet 41 and the second outlet 44 are communicated, or the second inlet 42 and the second outlet 44 are communicated, step S2, the valve body 4 and the compressor 11 operation according to the environmental information control includes:

[0103] Step S27'': according to the temperature of the second chamber 102 is less than the fifth temperature threshold T5, the second outlet 44 is controlled to be in the throttling state;

[0104] Step S28'': according to the temperature of the second chamber 102 is greater than or equal to the fifth temperature threshold T5, according to the rotation speed of the compressor 11 is greater than the rotation speed threshold f1, or according to the temperature of the second chamber 102 is greater than the sixth temperature threshold T6, the second outlet 44 is controlled to be in the full open state;

[0105] Step S29'': according to the temperature of the second chamber 102 being greater than or equal to a fifth temperature threshold T5, the rotating speed of the compressor 11 being less than or equal to a rotating speed threshold f1, or the temperature of the second chamber 102 being less than or equal to a sixth temperature threshold T6, the second outlet 44 is controlled to be in a throttling state, wherein the sixth temperature threshold T6 is greater than the fifth temperature threshold T5.

[0106] 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 a refrigeration demand, the rotating speed of the compressor 11 is small, the second outlet 44 is controlled to be in a throttling state. At this time, according to whether there is a condensation prevention demand, the first inlet 41 and the second outlet 44 can be turned on, that is, AD is turned on, or the second inlet 42 and the second outlet 44 are turned on, that is, BD is turned on. When the refrigeration demand for the second chamber 102 is urgent, the second outlet 44 is controlled to be in a fully open state, and at this time, according to whether there is a condensation prevention demand, the first inlet 41 and the second outlet 44 can be turned on, that is, AD is turned on, or the second inlet 42 and the second outlet 44 are turned on, that is, BD is turned on.

[0107] 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 here.

[0108] In some embodiments, the control method of the refrigerator further comprises:

[0109] Step S3: turning on the valve body 4 before the compressor 11 is running, and controlling the first outlet 43 and the second outlet 44 to be in a fully open state;

[0110] Step S4: turning off the valve body 4 after the compressor 11 is stopped.

[0111] Since the 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 valve body 4, thereby reducing the service life of the valve body 4. Therefore, in the embodiment, the valve body 4 is opened in advance before the compressor 11 is started, and the first outlet 43 and the second outlet 44 of the valve body 4 are both in a fully open state, so as to 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 valve body 4 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, so as to avoid the high-temperature refrigerant in the condenser 12 from being vaporized to absorb 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.

[0112] 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 bypass branch 33 in parallel, and using a valve body with on-off and throttling functions to control the valve body and the compressor according to the environmental information of the refrigerator. Since only one valve body 4 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.

[0113] The above is only a preferred specific embodiment 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 system. 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 pipe and a first refrigerant branch, a second refrigerant branch and a bypass branch which are respectively communicated with the main pipe, 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 communicated with the inlet of the second evaporator, the second evaporator, the compressor, the condenser and the anti-condensation pipe are sequentially arranged in the main pipe, and the bypass branch is arranged in parallel with the anti-condensation pipe; and 2. The refrigeration system of claim 1, wherein, a valve body arranged at the connection between the first refrigerant branch and the second refrigerant branch and the main pipe, the valve body has a first inlet, a second inlet, a first outlet and a second outlet, the first inlet is communicated with the outlet of the anti-condensation pipe, the second inlet is communicated with the bypass branch, the first outlet is communicated with the first refrigerant branch, the second outlet is communicated with the second refrigerant branch, and the first outlet and the second outlet both have a fully-open state, a throttling state and a closed state, wherein the first inlet can be selectively communicated with any one of the first outlet and the second outlet, or the second inlet can be selectively communicated with any one of the first outlet and the second outlet.

3. A refrigeration system, the refrigerator comprising a first compartment and a freezer compartment, 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, and the second throttling element is arranged in the second refrigerant branch. 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 pipe and a first refrigerant branch, a second refrigerant branch and a bypass branch which are respectively communicated with the main pipe, 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 pipe, and the bypass branch is arranged in parallel with the anti-condensation pipe; and a valve body having a first inlet, a second inlet, a first outlet and a second outlet, the first inlet is communicated with the outlet of the anti-condensation pipe, the second inlet is communicated with the bypass branch, the first outlet is communicated with the first refrigerant branch, the second outlet is communicated with the second refrigerant branch, the first outlet and the second outlet both have a fully-open state, a throttling state and a closed state, wherein the first inlet can be selectively communicated with any one of the first outlet and the second outlet, or the second inlet can be selectively communicated with any one of the first outlet and the second outlet.

4. The refrigeration system of claim 3 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 in communication with the inlet of the first evaporator, and the second throttling element is arranged in the second refrigerant branch and in communication with the inlet of the second evaporator.

5. The refrigeration system of any of claims 1 to 4, wherein, The valve body comprises a valve seat and a valve block arranged coaxially, an end surface of the valve seat is provided with the first inlet, the second inlet, the first outlet and the second outlet which are distributed in a circumferential direction, the first inlet and the second inlet are arranged on a circumference with the center axis of the valve seat as a center and a first length as a radius, the first outlet and the second outlet are arranged on a circumference with the center axis of the valve seat as a center and a second length as a radius, and the first length is greater than the second length; the first outlet comprises a first through hole and a first arc-shaped slot in communication with the first through hole, and the second outlet comprises a second through hole and a second arc-shaped slot in communication with the second through hole; The valve block comprises a connecting portion and first and second notches arranged on the connecting portion, the connecting portion is attached to the end surface of the valve seat and can rotate relative to the valve seat, so that the first notch can selectively communicate with any one of the first inlet and the second inlet, and the second notch can selectively communicate with any one of the first outlet and the second outlet, wherein when the second notch communicates with the first through hole, the first outlet is in a fully open state; when the second notch communicates with the second through hole, the second outlet is in a fully open state; when the second notch communicates with the first arc-shaped slot, the first outlet is in a throttling state; when the second notch communicates with the second arc-shaped slot, the second outlet is in a throttling state; when the connecting portion covers the first outlet except the second notch, the first outlet is in a closed state; and when the connecting portion covers the second outlet except the second notch, the second outlet is in a closed state.

6. The refrigeration system of claim 5 wherein, Further comprising a filtering device, an inlet of the filtering device is in communication with the condenser, a first output end of the filtering device is in communication with the inlet of the anti-condensation pipe, and a second output end of the filtering device is in communication with the bypass branch.

7. A refrigerator, wherein, Comprise: a cabinet, wherein a first chamber and a second chamber are arranged in the cabinet; The refrigeration system according to any one of claims 1-6, wherein 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 and the valve body of the refrigeration system, and configured to control the valve body and the compressor to operate according to the environmental information. The control method comprises:

8. A control method of a refrigerator applied to the refrigerator of claim 7, wherein, obtaining environmental information of the refrigerator; controlling the valve body and the compressor to operate according to the environmental information. ​ 9.The control method of a refrigerator according to claim 8, wherein, The second evaporator of the refrigerator is arranged in the main pipeline, the environmental information includes the environmental temperature and the environmental relative humidity of the refrigerator, the temperature of the first compartment and the temperature of the second compartment, only the second compartment has a refrigeration demand, and the control of the valve body and the compressor according to the environmental information includes: According to the environmental temperature being greater than an environmental temperature threshold value or according to the environmental relative humidity being greater than a humidity threshold value, the first inlet of the valve body is controlled to be in communication with the second outlet, and the second inlet is controlled to be closed to the first outlet; According to the rotational speed of the compressor being greater than a rotational speed threshold value or according to the temperature of the freezing compartment being greater than a first temperature threshold value, the second outlet is controlled to be in a fully open state; According to the rotational speed of the compressor being less than or equal to the rotational speed threshold value or according to the temperature of the second compartment being less than or equal to the first temperature threshold value, the second outlet is controlled to be in a throttling state. 10.The control method of a refrigerator according to claim 8, wherein, Only the freezing compartment has a refrigeration demand, and the control of the valve body and the compressor according to the environmental information includes: According to the environmental temperature being less than or equal to an environmental temperature threshold value or according to the environmental relative humidity being less than or equal to a humidity threshold value, the first inlet of the valve body is controlled to be closed to the first outlet, and the second inlet is controlled to be in communication with the second outlet; According to the rotational speed of the compressor being greater than a rotational speed threshold value or according to the temperature of the second compartment being greater than a first temperature threshold value, the second outlet is controlled to be in a fully open state; According to the rotational speed of the compressor being less than or equal to the rotational speed threshold value or according to the temperature of the second compartment being less than or equal to the first temperature threshold value, the second outlet is controlled to be in a throttling state. 11.The control method of a refrigerator according to claim 8, wherein, According to the first compartment having a refrigeration demand, the control of the valve body and the compressor according to the environmental information includes: According to the environmental temperature being greater than an environmental temperature threshold value or according to the environmental relative humidity being greater than a humidity threshold value, the first inlet of the valve body is controlled to be in communication with the first outlet, and the second inlet is controlled to be closed to the second outlet; According to the rotational speed of the compressor being greater than a rotational speed threshold value or according to the temperature of the first compartment being greater than a second temperature threshold value, the first outlet is controlled to be in a fully open state; According to the rotational speed of the compressor being less than or equal to the rotational speed threshold value or according to the temperature of the first compartment being less than or equal to the second temperature threshold value, the first outlet is controlled to be in a throttling state. 12.The control method of a refrigerator according to claim 8, wherein, According to the first compartment having a refrigeration demand, the control of the valve body and the compressor according to the environmental information includes: According to the environmental temperature being less than or equal to an environmental temperature threshold value or according to the environmental relative humidity being less than or equal to a humidity threshold value, the second inlet of the valve body is controlled to be in communication with the first outlet, and the first inlet is controlled to be closed to the second outlet; According to the rotational speed of the compressor being greater than a rotational speed threshold value or according to the temperature of the first compartment being greater than a second temperature threshold value, the first outlet is controlled to be in a fully open state; According to the rotational speed of the compressor being less than or equal to the rotational speed threshold value or according to the temperature of the first compartment being less than or equal to the second temperature threshold value, the first outlet is controlled to be in a throttling state. 13.The control method of a refrigerator according to claim 8, wherein, The second evaporator of the refrigerator is arranged in a second refrigerant branch, the environmental information comprises an environmental temperature or an environmental relative humidity of the refrigerator, a temperature of the first compartment and a temperature of the second compartment, and the controlling the valve body and the compressor according to the environmental information comprises: controlling the first inlet of the valve body to be open and the second inlet to be closed according to the environmental temperature being greater than an environmental temperature threshold value or according to the environmental relative humidity being greater than a humidity threshold value; controlling the second inlet of the valve body to be open and the first inlet to be closed according to the environmental temperature being less than or equal to the environmental temperature threshold value or according to the environmental relative humidity being less than or equal to the humidity threshold value. 14.The control method of a refrigerator according to claim 13, wherein, controlling the first inlet to be open with the first outlet or the second inlet to be open with the first outlet according to the first compartment having a refrigeration demand, and the controlling the valve body and the compressor according to the environmental information comprises: controlling the first outlet to be in a throttling state according to the temperature of the first compartment being less than a third temperature threshold value; controlling the first outlet to be in a fully open state according to the rotational speed of the compressor being greater than a rotational speed threshold value or according to the temperature of the first compartment being greater than a fourth temperature threshold value according to the temperature of the first compartment being greater than or equal to the third temperature threshold value; controlling the first outlet to be in a throttling state according to the rotational speed of the compressor being less than or equal to the rotational speed threshold value or according to the temperature of the first compartment being less than or equal to the fourth temperature threshold value according to the temperature of the first compartment being greater than or equal to the third temperature threshold value, wherein the fourth temperature threshold value is greater than the third temperature threshold value. 15.The control method of a refrigerator according to claim 13, wherein, controlling the first inlet to be open with the second outlet or the second inlet to be open with the second outlet according to the second compartment having a refrigeration demand, and the controlling the valve body and the compressor according to the environmental information comprises: controlling the second outlet to be in a throttling state according to the temperature of the second compartment being less than a fifth temperature threshold value; controlling the second outlet to be in a fully open state according to the rotational speed of the compressor being greater than a rotational speed threshold value or according to the temperature of the second compartment being greater than a sixth temperature threshold value according to the temperature of the second compartment being greater than or equal to the fifth temperature threshold value; controlling the second outlet to be in a throttling state according to the rotational speed of the compressor being less than or equal to the rotational speed threshold value or according to the temperature of the second compartment being less than or equal to the sixth temperature threshold value according to the temperature of the second compartment being greater than or equal to the fifth temperature threshold value, wherein the sixth temperature threshold value is greater than the fifth temperature threshold value. 16.The control method of a refrigerator according to claim 8, wherein, The control method further comprises: opening the valve body before the compressor is operated and controlling the first outlet and the second outlet to be in a fully open state; closing the valve body after the compressor is stopped.

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