Refrigerator with refrigerating system capable of running continuously without shutdown

Abstract

The utility model belongs to the technical field of refrigeration equipment, and particularly provides a refrigerator with a refrigeration system running continuously without shutdown. The utility model aims to solve the problem that the internal temperature of the conventional refrigerator fluctuates greatly due to frequent start and stop of a compressor of the conventional refrigerator. Therefore, the refrigerator comprises a refrigerator body and a refrigerating system. A first storage chamber and a second storage chamber are defined in the refrigerator body, and the refrigerating temperature of the first storage chamber is lower than that of the second storage chamber. The refrigerating system comprises a first compressor, a second compressor, a condenser, a first throttling component, a first evaporator used for cooling the first storage chamber and a second evaporator used for cooling the second storage chamber, the first compressor is connected with the second compressor in parallel, and the first compressor or the second compressor can be used for refrigerating the first storage chamber or the second storage chamber without shutdown. Therefore, the refrigerating system can operate continuously. The utility model solves the technical problems.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigeration equipment, and specifically provides a refrigerator whose refrigeration system operates continuously without stopping. Background Art

[0002] The refrigeration system of an existing refrigerator mainly includes a compressor, a condenser, a throttling device (such as an expansion valve, a capillary tube, etc.) and an evaporator, and uses a single refrigerant to achieve heat transfer, thereby reducing the temperature of the freezer and refrigerator compartments in the refrigerator.

[0003] Because the required refrigeration temperature for the freezer compartment is much lower than that for the refrigerator compartment, when both the freezer and refrigerator compartments need to be cooled simultaneously, the refrigeration system typically operates based on the freezer's lower temperature to ensure the freezer's temperature meets the required standard. This causes the refrigerant temperature when cooling the refrigerator compartment to be far above its optimal operating point, thereby reducing the efficiency of the entire refrigeration system. In theory, a higher refrigerant evaporation temperature increases the refrigeration system's energy efficiency ratio (i.e., the ratio of cooling capacity to energy consumption) (for example, a deep freezer consumes more electricity than a conventional refrigerator). Therefore, existing refrigeration systems experience significant efficiency losses when cooling both the freezer and refrigerator compartments simultaneously.

[0004] At the same time, existing refrigeration systems are often designed to accommodate high cooling capacity requirements, such as initial cooling (when the refrigerator is first turned on). This means the compressor needs to be sufficiently large to ensure the system can provide sufficient cooling capacity even when demand is highest. However, this often results in the compressor operating at partial load during stable periods of low cooling demand, requiring frequent startup and shutdown to adjust cooling capacity. This not only reduces the overall efficiency of the refrigeration system but also increases temperature fluctuations in the freezer and refrigerator compartments, negatively impacting food preservation.

[0005] The above technical problems are technical difficulties that those skilled in the art have always been eager to solve but have never been able to achieve success. Utility Model Content

[0006] One purpose of the utility model is to solve the problem of large temperature fluctuation inside the existing refrigerator caused by frequent starting and stopping of the compressor of the refrigerator.

[0007] To achieve the above object, the present invention provides a refrigerator comprising:

[0008] a box body defining a first storage compartment and a second storage compartment, wherein a refrigeration temperature of the first storage compartment is lower than a refrigeration temperature of the second storage compartment;

[0009] A refrigeration system is filled with a first refrigerant and a second refrigerant, wherein the evaporation temperature of the first refrigerant is lower than the evaporation temperature of the second refrigerant; the refrigeration system includes a first compressor, a second compressor, a condenser, a first throttling member, a first evaporator for cooling the first storage compartment, and a second evaporator for cooling the second storage compartment, wherein the first compressor and the second compressor are connected in parallel, and the first compressor or the second compressor can be operated without stopping, so that the refrigeration system operates continuously.

[0010] Optionally, the displacement of the first compressor is greater than or equal to the displacement of the second compressor; and / or, the first compressor is a fixed-frequency compressor, and the second compressor is a variable-frequency compressor.

[0011] Optionally, the first refrigerant is R290, and the second refrigerant is R600 or R600a.

[0012] Optionally, the refrigeration system further includes a control valve, configured to allow the first refrigerant and the second refrigerant to flow through the second evaporator and selectively flow through the first evaporator.

[0013] Optionally, the condenser, the control valve, the first throttling component, the first evaporator and the second evaporator are connected in series in sequence; the refrigeration system also includes a second throttling component connected in series between the control valve and the second evaporator, so that the first throttling component is connected in parallel with the first evaporator and the second throttling component.

[0014] Optionally, the control valve is an electrically controlled reversing valve comprising a valve inlet and two valve outlets.

[0015] Optionally, the refrigeration system further includes a first exhaust check valve provided at a first exhaust port of the first compressor to prevent the first refrigerant and the second refrigerant from flowing back into the first compressor when the first compressor is stopped.

[0016] Optionally, the refrigeration system further includes a first suction one-way valve arranged at the first suction port of the first compressor.

[0017] Optionally, the refrigeration system further includes a second exhaust check valve provided at the second exhaust port of the second compressor and / or a second intake check valve provided at the second intake port of the second compressor.

[0018] Optionally, the first storage compartment is a freezer compartment, and the second storage compartment is a refrigerator compartment; and / or, the refrigerator further includes a first refrigeration fan corresponding to the first evaporator and a second refrigeration fan corresponding to the second evaporator.

[0019] Based on the foregoing description, those skilled in the art will understand that, in the aforementioned technical solution of the present invention, by configuring the refrigeration system with a first compressor and a second compressor in parallel, and enabling the first compressor or the second compressor to operate continuously, the refrigeration system can operate continuously, continuously providing cooling to the first storage compartment and the second storage compartment, thereby minimizing temperature fluctuations between the first storage compartment and the second storage compartment, thereby improving the preservation of food. At the same time, by filling the refrigeration system with a first refrigerant and a second refrigerant having a higher evaporation temperature than the first refrigerant, the first refrigerant can evaporate at the first evaporator, providing cooling to the first storage compartment; and the second refrigerant can evaporate at the second evaporator, providing cooling to the second storage compartment, thereby improving the energy efficiency of the refrigeration system. It can be seen that the present invention solves a technical problem that those skilled in the art have long desired to solve but have never been able to successfully solve.

[0020] Furthermore, by configuring the second compressor as a variable-frequency compressor, the refrigeration system can utilize only the second compressor when the first and second storage compartments require less cooling capacity. The variable frequency operation of the second compressor can then be used to appropriately adjust the cooling capacity of the refrigeration system. Therefore, the present invention ensures continuous operation of the refrigeration system while also enabling dynamic adjustment of the cooling capacity of the refrigeration system.

[0021] Furthermore, by configuring a control valve for the refrigeration system, the first refrigerant and the second refrigerant are allowed to flow through the second evaporator and selectively through the first evaporator through the control valve, thereby achieving simultaneous refrigeration of the first storage compartment and the second storage compartment by the refrigeration system, and achieving independent refrigeration of the second storage compartment by the refrigeration system.

[0022] Furthermore, by sequentially connecting the condenser, control valve, first throttle member, first evaporator, and second evaporator in series, and connecting the second throttle member in series between the control valve and the second evaporator, the first throttle member, the first evaporator, and the second throttle member are connected in parallel. In this way, when both the first and second storage compartments require cooling, the first and second refrigerants can flow through the first and second evaporators simultaneously, with the first refrigerant evaporating while flowing through the first evaporator, providing cooling for the first evaporator; and the second refrigerant evaporating while flowing through the second evaporator, providing cooling for the second evaporator. When only the second storage compartment requires cooling, the first and second refrigerants can flow through the second evaporator simultaneously, with the second refrigerant evaporating while flowing through the second evaporator, providing cooling for the second evaporator.

[0023] Furthermore, by providing a first exhaust check valve at the first exhaust port of the first compressor, the first refrigerant and the second refrigerant are effectively prevented from flowing back into the first compressor when the first compressor is stopped.

[0024] Other beneficial effects of the present invention will be described in detail below in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand the improved purposes, features and advantages of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solution of the present invention, some embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that the same reference numerals in different drawings indicate the same or similar components or parts; the drawings of the present invention are not necessarily drawn to scale. In the drawings:

[0026] Figure 1 This is a schematic diagram of the effect of the refrigerator in some embodiments of the present invention;

[0027] Figure 2 yes Figure 1 Schematic cross-section of the middle refrigerator along the AA direction;

[0028] Figure 3 It is a schematic diagram of the structure of the refrigeration system in some embodiments of the present utility model;

[0029] Figure 4 It is a schematic diagram of the structure of the refrigeration system in other embodiments of the present invention.

[0030] Description of reference numerals:

[0031] 001. Refrigerator;

[0032] 100, cabinet; 111, first storage compartment; 112, first refrigeration compartment; 121, second storage compartment; 122, second refrigeration compartment; 130, press compartment;

[0033] 200, door body;

[0034] 300, Refrigeration System; 301, First Refrigerant; 302, Second Refrigerant; 310, First Compressor; 311, First Exhaust Port; 312, First Intake Port; 320, Second Compressor; 321, Second Exhaust Port; 322, Second Intake Port; 330, Condenser; 341, First Evaporator; 342, Second Evaporator; 351, First Throttle Component; 352, Second Throttle Component; 360, Control Valve; 361, Valve Inlet; 362, Valve Outlet; 371, Anti-dew Pipe; 372, Dry Filter; 373, Liquid Storage Bag; 381, First Exhaust Check Valve; 382, ​​First Intake Check Valve; 391, Second Exhaust Check Valve; 392, Second Intake Check Valve;

[0035] 410, cooling fan; 421, first cooling fan; 422, second cooling fan. DETAILED DESCRIPTION

[0036] Those skilled in the art should understand that the embodiments described below are only a portion of the embodiments of the present invention, rather than all of the embodiments of the present invention. These embodiments are intended to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by those skilled in the art without creative effort should still fall within the scope of protection of the present invention.

[0037] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for the convenience of description and does not indicate or imply that the corresponding device or element must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, it should not be understood as limiting the present utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0038] Furthermore, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or a communication between the two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. For example, the terms "install", "connect", "connect", and "fix", unless otherwise specified, can specifically refer to any feasible connection form such as bolt connection, screw connection, welding, plug-in connection, riveting, welding, and clamping.

[0039] In addition, it should be noted that in the description of the present invention, the terms "cold" and "heat" are two descriptions of the same physical state. That is, the higher the "cold" of a certain target object (such as an evaporator, air, condenser, etc.), the lower the "heat" it has, and the lower the "cold" it has, the higher the "heat" it has. When a certain target object absorbs "cold", it will release "heat", and when it releases "cold", it will absorb "heat". A certain target object stores "cold" or "heat" in order to maintain the current temperature of the target object. "Refrigeration" and "heat absorption" are two descriptions of the same physical phenomenon, that is, a certain target object (such as an evaporator) will absorb heat while cooling.

[0040] like Figures 1 to 3As shown, in some embodiments of the present invention, a refrigerator 001 includes a housing 100, a door 200, and a refrigeration system 300. The door 200 is mounted on the housing 100 for opening and closing the housing 100. The refrigeration system 300 is integrated into the housing 100 for providing cooling to the refrigerator 001.

[0041] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, the cabinet 100 defines a first storage compartment 111 and a second storage compartment 121. The refrigeration temperature of the first storage compartment 111 is lower than that of the second storage compartment 121. For example, the first storage compartment 111 is a freezer compartment for freezing food, while the second storage compartment 121 is a refrigerator compartment for refrigerating food without freezing it.

[0042] like Figure 3 As shown, in some embodiments of the present invention, the refrigeration system 300 is filled with a first refrigerant 301 and a second refrigerant 302, so that the refrigeration system 300 uses the first refrigerant 301 and the second refrigerant 302 to cool the first storage compartment 111 and the second storage compartment 121, and transfers the heat in the first storage compartment 111 and the second storage compartment 121 to the environment in which the refrigerator 001 is located.

[0043] In some embodiments of the present invention, the first refrigerant 301 is R290 or R170, and the second refrigerant 302 is R600 or R600a.

[0044] Continue reading Figure 3 In some embodiments of the present invention, the refrigeration system 300 includes a first compressor 310, a second compressor 320, a condenser 330, a first evaporator 341, a second evaporator 342, a first throttling component 351, a second throttling component 352, a control valve 360, an anti-dew pipe 371, a drying filter 372 and a liquid storage bag 373.

[0045] The first evaporator 341 is used to cool the first storage compartment 111, and the second evaporator 342 is used to cool the second storage compartment 121. The anti-condensation pipe 371 can be arranged on the door 200 or the cabinet 100 to heat the surface of the refrigerator 001 to prevent condensation. The drying filter 372 is used to filter out impurities and moisture in the refrigeration system 300. The liquid storage bag 373 is used to store excess first refrigerant 301 and / or second refrigerant 302 in the refrigeration system 300.

[0046] from Figure 3As can be seen, in some embodiments of the present invention, the first compressor 310 and the second compressor 320 are connected in parallel, and then connected in series with the anti-dew pipe 371, the drying filter 372, the control valve 360, the condenser 330, the first throttle member 351, the first evaporator 341, the second evaporator 342, and the liquid storage bag 373 to form a circulation loop. In addition, the second throttle member 352 is connected in series between the control valve 360 ​​and the second evaporator 342, so that the first throttle member 351 is connected in parallel with the first evaporator 341 and the second throttle member 352.

[0047] Those skilled in the art will appreciate that by configuring the refrigeration system 300 with a first compressor 310 and a second compressor 320 connected in parallel, and by enabling either the first compressor 310 or the second compressor 320 to operate continuously, the refrigeration system 300 can operate continuously, continuously providing cooling to the first storage compartment 111 and the second storage compartment 121. This, in turn, minimizes temperature fluctuations between the first storage compartment 111 and the second storage compartment 121, thereby improving food preservation. Furthermore, by filling the refrigeration system 300 with a first refrigerant 301 and a second refrigerant 302 having a higher evaporation temperature than the first refrigerant 301, the first refrigerant 301 evaporates in the first evaporator 341, providing cooling to the first storage compartment 111, and the second refrigerant 302 evaporates in the second evaporator 342, providing cooling to the second storage compartment 121. This improves the energy efficiency of the refrigeration system 300.

[0048] Furthermore, the displacement of the first compressor 310 is greater than or equal to the displacement of the second compressor 320 ; and the first compressor 310 is a fixed-frequency compressor, and the second compressor 320 is a variable-frequency compressor.

[0049] Those skilled in the art will appreciate that by configuring the second compressor 320 as a variable frequency compressor, the refrigeration system 300 can provide cooling solely through the second compressor 320 when the required cooling capacity of the first storage compartment 111 and the second storage compartment 121 is low. Furthermore, the cooling capacity of the refrigeration system 300 can be appropriately adjusted by varying the frequency of the second compressor 320. Therefore, the present invention ensures the continuous operation of the refrigeration system 300 while also achieving dynamic adjustment of the cooling capacity of the refrigeration system 300.

[0050] Those skilled in the art will also understand that the control valve 360 ​​can allow the first refrigerant 301 and the second refrigerant 302 to flow through the second evaporator 342 and selectively flow through the first evaporator 341, thereby enabling the refrigeration system 300 to simultaneously cool the first storage compartment 111 and the second storage compartment 121, and enabling the refrigeration system 300 to independently cool the second storage compartment 121.

[0051] like Figure 3As shown, in some embodiments of the present invention, the control valve 360 ​​is an electrically controlled reversing valve including a valve inlet 361 and two valve outlets 362 , so that the control valve 360 ​​is connected to the drying filter 372 , the first throttling component 351 and the second throttling component 352 respectively.

[0052] In addition, in other embodiments of the present invention, those skilled in the art may also configure the control valve 360 ​​to be any other feasible valve device, such as two parallel electrically controlled stop valves, as needed.

[0053] It should be noted that the first throttle component 351 and / or the second throttle component 352 are not limited to Figure 3 The capillary tube shown in , can also be an electronic expansion valve, or a combination of the capillary tube and the electronic expansion valve.

[0054] It should be noted that those skilled in the art can also adjust Figure 3 The series relationship of the refrigeration system 300 shown in FIG. 3 is such that, for example, the drying filter 372 is connected in series upstream of the anti-dew pipe 371 .

[0055] In other embodiments of the present invention, those skilled in the art may also omit some components of the refrigeration system 300 as needed.

[0056] For example, at least one of the anti-dew tube 371 , the drying filter 372 and the liquid storage bag 373 is omitted.

[0057] For another example, the second throttle member 352 can be omitted, so that the first refrigerant 301 and the second refrigerant 302 can only flow through the first evaporator 341 and then through the second evaporator 342. In this way, when only the second evaporator 342 is needed to cool the second storage compartment 121, the first compressor 310 can be stopped and the second compressor 320 can be operated at a lower operating frequency, so that only the second refrigerant 302 undergoes a phase change, and the first refrigerant 301 does not participate in the phase change, or only a small amount of the first refrigerant 301 participates in the phase change.

[0058] like Figure 2 As shown, in some embodiments of the present invention, the housing 100 further defines a first refrigeration compartment 112 communicating with the first storage compartment 111, a second refrigeration compartment 122 communicating with the second storage compartment 121, and a compressor compartment 130. The first evaporator 341 is disposed in the first refrigeration compartment 112, the second evaporator 342 is disposed in the second refrigeration compartment 122, and the first compressor 310, the second compressor 320, and the condenser 330 are all disposed in the compressor compartment 130.

[0059] Continue reading Figure 2In some embodiments of the present invention, the refrigerator 001 also includes a heat dissipation fan 410, which is arranged in the compressor compartment 130 and is used to drive external air into the compression compartment to cool the first compressor 310, the second compressor 320 and the condenser 330, and to drive the hot air in the compressor compartment 130 to be blown to the outside again.

[0060] Continue reading Figure 2 In some embodiments of the present invention, the refrigerator 001 further includes a first refrigeration fan 421 corresponding to the first evaporator 341 and a second refrigeration fan 422 corresponding to the second evaporator 342 .

[0061] The first refrigeration fan 421 may be disposed in the first refrigeration compartment 112 to drive air to circulate between the first refrigeration compartment 112 and the first storage compartment 111 , thereby cooling the first storage compartment 111 .

[0062] The second refrigeration fan 422 may be disposed in the second refrigeration compartment 122 to drive air to circulate between the second refrigeration compartment 122 and the second storage compartment 121 , thereby refrigerating the second storage compartment 121 .

[0063] It should be noted that the refrigerator 001 of the present invention is not limited to Figure 1 and Figure 2 The form shown can also be set to any other feasible form, for example, the box body 100 is further defined with a temperature-changing compartment, the door body 200 of the refrigerator 001 is a double door, etc.

[0064] Refer to the following Figure 2 and Figure 3 The working principle of the refrigeration system 300 of the refrigerator 001 in some embodiments of the present invention is briefly described.

[0065] When both the first storage compartment 111 and the second storage compartment 121 need to be cooled, the control valve 360 ​​is switched so that the refrigerant flowing therethrough flows only to the first throttle member 351. The first compressor 310 and the second compressor 320 are controlled to operate simultaneously.

[0066] Because the cooling temperature of the first storage compartment 111 is lower than that of the second storage compartment 121, the temperature of the first evaporator 341 is also lower than that of the second storage compartment 121. Furthermore, because the evaporation temperature of the first refrigerant 301 is lower than that of the second refrigerant 302, the first refrigerant 301 evaporates during this process while flowing through the first evaporator 341, absorbing a significant amount of heat. However, due to its higher evaporation temperature, the second refrigerant 302 does not undergo a phase change in the first evaporator 341. It is only when the second refrigerant 302 evaporates through the second evaporator 342 that it absorbs a significant amount of heat.

[0067] When only the second storage compartment 121 needs to be cooled, the control valve 360 ​​is switched to allow the refrigerant flowing therethrough to flow only to the second throttling member 352. The first compressor 310 is controlled to stop, and only the second compressor 320 is controlled to operate.

[0068] During this process, the first refrigerant 301 in the refrigeration system 300 may always be in a gaseous state, or most of it may be in a gaseous state; the second refrigerant 302 may undergo a phase change and evaporate when flowing through the second evaporator 342, absorbing a large amount of heat.

[0069] At this point, those skilled in the art will appreciate that, by connecting a fixed-frequency first compressor 310 and a variable-frequency second compressor 320 in parallel, and by filling the refrigeration system 300 with a first refrigerant 301 and a second refrigerant 302 having different evaporation temperatures, some embodiments of the present invention achieve continuous operation of the refrigeration system 300 without stopping, reduce temperature fluctuations within the first storage compartment 111 and the second storage compartment 121, and improve the energy efficiency of the refrigeration system 300. This demonstrates that the present invention solves a technical problem that those skilled in the art have long desired to solve but have not yet successfully addressed.

[0070] It should be noted that the above description of the operating principle of the refrigeration system 300 is intended to help those skilled in the art understand the present invention and does not imply that the refrigeration system 300 of the present invention can only operate according to the aforementioned logic. For example, when both the first storage compartment 111 and the second storage compartment 121 require cooling, and the required cooling capacity is relatively low, the first compressor 310 can be shut down, and only the second compressor 320 can be operated.

[0071] like Figure 4 As shown, in other embodiments of the present invention, compared with some embodiments described above, the refrigeration system 300 also includes a first exhaust check valve 381 arranged at the first exhaust port 311 of the first compressor 310 to prevent the first refrigerant 301 and the second refrigerant 302 from flowing back into the first compressor 310 when the first compressor 310 is shut down.

[0072] Furthermore, in some other embodiments of the present invention, the refrigeration system 300 may further include a first suction check valve 382 disposed at the first suction port 312 of the first compressor 310 .

[0073] Furthermore, in other embodiments of the present invention, the refrigeration system 300 may also be provided with a second exhaust check valve 391 at the second exhaust port 321 of the second compressor 320 and / or a second intake check valve 392 at the second intake port 322 of the second compressor 320 .

[0074] Among them, the first air intake check valve 382, ​​the second air exhaust check valve 391 and the second air intake check valve 392 can all play a role in preventing backflow.

[0075] Thus far, the technical solutions of the present invention have been described in conjunction with the above-mentioned multiple embodiments. However, it is easy for those skilled in the art to understand that the scope of protection of the present invention is not limited to these specific embodiments. Without departing from the technical principles of the present invention, those skilled in the art may split and combine the technical solutions of the above-mentioned various embodiments, and may also make equivalent changes or replacements to the relevant technical features. Any changes, equivalent replacements, improvements, etc. made within the technical concept and / or technical principles of the present invention shall fall within the scope of protection of the present invention.

[0076] Finally, it should be noted that the refrigerator 001 of the present invention is a refrigerator 001 in a broad sense, which not only includes the so-called refrigerator 001 in a narrow sense, but also includes fresh-keeping equipment with refrigeration and / or freezing functions, such as refrigerators, freezers, etc.

[0077] In the present invention, the term "communication" refers to fluid communication, which allows fluid (e.g., air, liquid) to flow between two connected devices. Furthermore, the "communication" can be a leak-free flow of fluid between the two connected devices, or a slight leak-free flow of fluid between the two connected devices.

Claims

1. A refrigerator, characterized in that: include: a box body defining a first storage compartment and a second storage compartment, wherein a refrigeration temperature of the first storage compartment is lower than a refrigeration temperature of the second storage compartment; A refrigeration system is filled with a first refrigerant and a second refrigerant, wherein the evaporation temperature of the first refrigerant is lower than the evaporation temperature of the second refrigerant; the refrigeration system includes a first compressor, a second compressor, a condenser, a first throttling member, a first evaporator for cooling the first storage compartment, and a second evaporator for cooling the second storage compartment, wherein the first compressor and the second compressor are connected in parallel, and the first compressor or the second compressor can be operated without stopping, so that the refrigeration system operates continuously.

2. The refrigerator according to claim 1, wherein: The displacement of the first compressor is greater than or equal to the displacement of the second compressor; and / or, The first compressor is a fixed-frequency compressor, and the second compressor is a variable-frequency compressor.

3. The refrigerator according to claim 2, characterized in that The first refrigerant is R290, and the second refrigerant is R600 or R600a.

4. The refrigerator according to any one of claims 1 to 3, characterized in that The refrigeration system further includes a control valve configured to allow the first refrigerant and the second refrigerant to flow through the second evaporator and selectively flow through the first evaporator.

5. The refrigerator according to claim 4, characterized in that The condenser, the control valve, the first throttling member, the first evaporator and the second evaporator are sequentially connected in series; The refrigeration system further includes a second throttle member connected in series between the control valve and the second evaporator, so that the first throttle member is connected in parallel with the first evaporator and the second throttle member.

6. The refrigerator according to claim 5, characterized in that The control valve is an electrically controlled reversing valve comprising a valve inlet and two valve outlets.

7. The refrigerator according to any one of claims 1 to 3, characterized in that The refrigeration system further includes a first exhaust check valve disposed at a first exhaust port of the first compressor to prevent the first refrigerant and the second refrigerant from flowing back into the first compressor when the first compressor is stopped.

8. The refrigerator according to claim 7, characterized in that The refrigeration system further includes a first suction check valve disposed at a first suction port of the first compressor.

9. The refrigerator according to claim 7, characterized in that The refrigeration system further includes a second exhaust check valve provided at the second exhaust port of the second compressor and / or a second suction check valve provided at the second suction port of the second compressor.

10. The refrigerator according to any one of claims 1 to 3, characterized in that The first storage compartment is a freezer compartment, and the second storage compartment is a refrigerator compartment; and / or, The refrigerator further includes a first refrigeration fan corresponding to the first evaporator and a second refrigeration fan corresponding to the second evaporator.

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