Double-compressor double-circulation refrigeration refrigerator

Abstract

The utility model provides a dual-compressor dual-cycle refrigeration refrigerator. The dual-compressor dual-cycle refrigeration refrigerator comprises a cold storage refrigeration cycle and a freezing refrigeration cycle. The refrigeration cycle comprises a refrigeration compressor, a refrigeration condenser, a refrigeration filter, a first refrigeration capillary tube and a first refrigeration evaporator which are all arranged in the refrigeration chamber; the freezing refrigeration cycle comprises a freezing compressor, a freezing condenser, a freezing filter, a first freezing capillary tube and a first freezing evaporator which are all arranged in the freezing chamber. On the basis that independent refrigeration of the refrigerating chamber and the freezing chamber is achieved through the double compressors, a series connection or parallel connection mode is adopted, a capillary tube and an evaporator are additionally arranged in the refrigerating chamber or the freezing chamber, the cooling rate of the refrigerator is increased, the working time of the compressors is shortened, and power consumption is reduced. And a group of capillary tubes and evaporators are connected in series or in parallel, so that the requirements of diversified refrigeration temperatures of the refrigeration chamber and the freezing chamber, especially the requirement of the freezing chamber for the cryogenic temperature, are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, and more particularly to a double-compressor double-cycle refrigeration refrigerator. BACKGROUND

[0002] With the increasing demand of consumers for the quality and performance of refrigerators, large-capacity refrigerators and high refrigeration requirements have put higher requirements on the refrigeration system of the refrigerator. The traditional double-temperature refrigerator usually adopts a single-cycle system. Although this system has a simple structure and low cost, it has obvious shortcomings in temperature control accuracy and heat loss. Especially in a double-temperature refrigerator with a large refrigeration chamber, these problems are more prominent, resulting in the consumption of a large amount of useful energy, which not only increases the user's electricity bill, but also affects the use effect of the refrigerator.

[0003] In order to improve the shortcomings of the single-cycle system, an electromagnetic valve double-cycle system appears on the market, including two types of discrete double-cycle and bypass double-cycle. The parallel structure of the evaporators in the discrete double-cycle and bypass double-cycle refrigerator makes the temperature control unstable when providing cold energy to the refrigeration chamber and the freezer at the same time. In addition, in the bypass double-cycle system, if the refrigeration evaporator is arranged in front of the freezer evaporator, and the bypass loop is connected to the freezer evaporator, although the temperature of the refrigeration chamber and the freezer can be controlled separately, the thermodynamic irreversible loss of the refrigeration evaporator is still large, which affects the refrigeration efficiency.

[0004] The existing scheme of adding a refrigeration evaporator with a large area (additional evaporator) to the bypass loop of the bypass double-cycle refrigerator, which is composed of the original refrigeration evaporator and the additional evaporator, can adjust the distribution of cold energy between the refrigeration chamber and the freezer through the additional evaporator, thereby achieving the purpose of energy saving and consumption reduction. However, it does not fundamentally solve the problem of large thermodynamic irreversible loss of the refrigeration evaporator, so it cannot achieve the purpose of deep cooling. Moreover, the single-compressor double-cycle system has large temperature fluctuations when the user frequently uses or stores a large amount of food, which affects the preservation effect and power consumption. CONTENT OF THE UTILITY MODEL

[0005] To solve the above-mentioned problems of the prior art, which cannot fundamentally solve the problem of large thermodynamic irreversible loss of the refrigeration evaporator, so it cannot achieve the purpose of deep cooling, and the single-compressor double-cycle system has large temperature fluctuations when the user frequently uses or stores a large amount of food, which affects the preservation effect and power consumption.

[0006] The present application provides a double-compressor double-cycle refrigeration refrigerator, comprising: a refrigeration refrigeration cycle and a freezing refrigeration cycle;

[0007] The refrigeration refrigeration cycle comprises: a refrigeration compressor, a refrigeration condenser, a refrigeration filter, a first refrigeration capillary tube, and a first refrigeration evaporator;

[0008] the refrigeration compressor refrigerant outlet is connected to the refrigeration condenser refrigerant inlet, the refrigeration condenser refrigerant outlet is connected to the refrigeration filter refrigerant inlet, the refrigeration filter refrigerant outlet is connected to the first refrigeration capillary refrigerant inlet, the first refrigeration capillary refrigerant outlet is connected to the first refrigeration evaporator refrigerant inlet, and the first refrigeration evaporator refrigerant outlet is connected to the refrigeration compressor refrigerant inlet;

[0009] the refrigeration compressor, the refrigeration condenser, the refrigeration filter, the first refrigeration capillary, and the first refrigeration evaporator are all arranged in a refrigeration compartment;

[0010] the freezing refrigeration cycle includes a freezing compressor, a freezing condenser, a freezing filter, a first freezing capillary, and a first freezing evaporator;

[0011] the freezing compressor refrigerant outlet is connected to the freezing condenser refrigerant inlet, the freezing condenser refrigerant outlet is connected to the freezing filter refrigerant inlet, the freezing filter refrigerant outlet is connected to the first freezing capillary refrigerant inlet, the first freezing capillary refrigerant outlet is connected to the first freezing evaporator refrigerant inlet, and the first freezing evaporator refrigerant outlet is connected to the freezing compressor refrigerant inlet;

[0012] the freezing compressor, the freezing condenser, the freezing filter, the first freezing capillary, and the first freezing evaporator are all arranged in a freezing compartment.

[0013] In an implementable manner, the refrigeration refrigeration cycle further includes a second freezing capillary and a second freezing evaporator;

[0014] the first refrigeration evaporator refrigerant outlet is connected to the second freezing capillary refrigerant inlet, the second freezing capillary refrigerant outlet is connected to the second freezing evaporator refrigerant inlet, and the second freezing evaporator refrigerant outlet is connected to the refrigeration compressor refrigerant inlet;

[0015] the second freezing capillary and the second freezing evaporator are both arranged in the freezing compartment.

[0016] In an implementable manner, the refrigeration refrigeration cycle further includes a refrigeration bypass circuit;

[0017] the refrigeration bypass circuit includes a first electromagnetic valve, a second freezing capillary, and a second freezing evaporator;

[0018] the refrigeration inlet of the first electromagnetic valve is connected to the refrigeration filter refrigerant outlet, and the refrigeration outlet of the first electromagnetic valve is connected to the first refrigeration capillary refrigerant inlet and the second freezing capillary refrigerant inlet;

[0019] the second freeze capillary is connected to the second freeze evaporator; the second freeze evaporator is connected to the freeze compressor;

[0020] the second freeze capillary and the second freeze evaporator are connected in parallel to the first freeze capillary and the first freeze evaporator;

[0021] the first solenoid valve is disposed in the freeze compartment; the second freeze capillary and the second freeze evaporator are disposed in the freeze compartment.

[0022] In an implementation, a freeze compartment switch is further included, the freeze compartment switch is electrically connected to the first solenoid valve;

[0023] the first solenoid valve is configured to: when the freeze compartment switch is closed, the freeze compartment is enabled, and the first solenoid valve is connected to the first freeze capillary;

[0024] when the freeze compartment switch is opened, the freeze compartment is disabled, and the first solenoid valve is connected to the second freeze capillary.

[0025] In an implementation, the freeze refrigeration cycle further includes: a second freeze capillary and a second freeze evaporator;

[0026] the first freeze evaporator is connected to the second freeze capillary; the second freeze capillary is connected to the second freeze evaporator; and the second freeze evaporator is connected to the freeze compressor;

[0027] the second freeze capillary and the second freeze evaporator are disposed in the freeze compartment.

[0028] In an implementation, the freeze refrigeration cycle further includes a freeze bypass circuit;

[0029] the freeze bypass circuit includes: a second solenoid valve, a second freeze capillary and a second freeze evaporator;

[0030] the second solenoid valve is connected to the freeze filter; the second solenoid valve is connected to the first freeze capillary and the second freeze capillary;

[0031] the second freeze capillary is connected to the second freeze evaporator; the second freeze evaporator is connected to the freeze compressor;

[0032] The second refrigeration capillary and the second refrigeration evaporator are arranged in parallel with the first freezing capillary and the first freezing evaporator.

[0033] The second electromagnetic valve is arranged in the freezing compartment, and the second refrigeration capillary and the second refrigeration evaporator are arranged in the refrigeration compartment.

[0034] In a feasible implementation, a freezing compartment switch is further included, and the freezing compartment switch is electrically connected with the second electromagnetic valve.

[0035] The second electromagnetic valve is configured to, when the freezing compartment switch is closed, the freezing compartment is enabled, and the second electromagnetic valve is connected with the first freezing capillary.

[0036] When the freezing compartment switch is opened, the freezing compartment is disabled, and the second electromagnetic valve is connected with the second refrigeration capillary.

[0037] In a feasible implementation, the refrigeration condenser and the freezing condenser are bottom-mounted condensers, and the refrigeration evaporator and the freezing evaporator are finned evaporators.

[0038] From the above, the application provides a double-compressor double-cycle refrigeration refrigerator, which, on the basis of realizing independent refrigeration of a refrigeration compartment and a freezing compartment by using double compressors, adds a set of capillary and evaporator in the refrigeration compartment or the freezing compartment in a series or parallel manner, improves the cooling rate of the refrigerator, reduces the working time of the compressor, and reduces the power consumption. By connecting or connecting a set of capillary and evaporator in series or in parallel, the diversified refrigeration temperature requirements of the refrigeration compartment and the freezing compartment are met, and especially the deep cooling temperature requirements of the freezing compartment. BRIEF DESCRIPTION OF DRAWINGS

[0039] The drawings incorporated into the specification and forming a part thereof, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0040] Figure 1 is a structural schematic diagram of a double-compressor double-cycle refrigeration refrigerator according to an embodiment of the present application;

[0041] Figure 2 is a structural schematic diagram of a double-compressor double-cycle refrigeration refrigerator according to another embodiment of the present application;

[0042] Figure 3is a structural schematic diagram of a double-compressor double-cycle refrigeration refrigerator according to another embodiment of the present application;

[0043] Figure 4 is a structural schematic diagram of a double-compressor double-cycle refrigeration refrigerator according to another embodiment of the present application;

[0044] Figure 5 is a structural schematic diagram of a double-compressor double-cycle refrigeration refrigerator according to another embodiment of the present application.

[0045] BRIEF DESCRIPTION OF DRAWINGS

[0046] 10 - refrigeration refrigeration cycle; 20 - freezing refrigeration cycle; 30 - refrigeration bypass circuit; 40 - freezing bypass circuit;

[0047] 11 - refrigeration compressor; 12 - refrigeration condenser; 13 - refrigeration filter; 14 - first refrigeration capillary tube; 15 - first refrigeration evaporator; 16 - first solenoid valve; 17 - second refrigeration capillary tube; 18 - second refrigeration evaporator;

[0048] 21 - freezing compressor; 22 - freezing condenser; 23 - freezing filter; 24 - first freezing capillary tube; 25 - first freezing evaporator; 26 - second solenoid valve; 27 - second freezing capillary tube; 28 - second freezing evaporator. DETAILED DESCRIPTION

[0049] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations can be implemented in any

[0050] In order to improve the shortcomings of the single-cycle system, the electromagnetic valve double-cycle system appears, including the discrete double-cycle and the bypass double-cycle two types. The parallel structure of the evaporators in the discrete double-cycle and the bypass double-cycle refrigerator makes the temperature control unstable when providing cold energy to the refrigeration chamber and the freezing chamber at the same time. The existing scheme of adding a refrigeration evaporator with a larger area (additional evaporator) on the bypass circuit of the bypass double-cycle refrigerator, which is composed of the original refrigeration evaporator and the additional evaporator, adjusts the cold energy distribution between the refrigeration chamber and the freezing chamber through the additional evaporator, so as to achieve the purpose of energy saving and consumption reduction. However, it does not fundamentally solve the problem of large thermodynamic irreversible loss of the refrigeration evaporator, and therefore cannot achieve the purpose of deep cooling. And the single-compressor double-cycle has large temperature fluctuation when the user frequently uses or stores a large amount of food, which affects the preservation effect and power consumption.

[0051] In order to solve the above problems, the embodiment of the present application provides a double-compressor double-cycle refrigeration refrigerator, as shown in Figure 1 The refrigeration refrigeration cycle 10 and the freezing refrigeration cycle 20 are provided.

[0052] The refrigeration refrigeration cycle 10 includes a refrigeration compressor 11, a refrigeration condenser 12, a refrigeration filter 13, a first refrigeration capillary tube 14 and a first refrigeration evaporator 15; the refrigeration compressor 11 is connected to the refrigeration condenser 12 at the refrigerant outlet, the refrigeration condenser 12 is connected to the refrigeration filter 13 at the refrigerant inlet, the refrigeration filter 13 is connected to the first refrigeration capillary tube 14 at the refrigerant outlet, the first refrigeration capillary tube 14 is connected to the first refrigeration evaporator 15 at the refrigerant inlet, and the first refrigeration evaporator 15 is connected to the refrigeration compressor 11 at the refrigerant inlet.

[0053] The refrigeration compressor 11, the refrigeration condenser 12, the refrigeration filter 13, the first refrigeration capillary tube 14 and the first refrigeration evaporator 15 are all arranged in the refrigeration chamber.

[0054] The freezing refrigeration cycle 20 includes a freezing compressor 21, a freezing condenser 22, a freezing filter 23, a first freezing capillary tube 24 and a first freezing evaporator 25.

[0055] The freezing compressor 21 is connected to the freezing condenser 22 at the refrigerant outlet, the freezing condenser 22 is connected to the freezing filter 23 at the refrigerant inlet, the freezing filter 23 is connected to the first freezing capillary tube 24 at the refrigerant outlet, the first freezing capillary tube 24 is connected to the first freezing evaporator 25 at the refrigerant inlet, and the first freezing evaporator 25 is connected to the freezing compressor 21 at the refrigerant inlet.

[0056] The freezing compressor 21, the freezing condenser 22, the freezing filter 23, the first freezing capillary 24 and the first freezing evaporator 25 constitute a freezing refrigeration cycle 20 responsible for refrigeration of the freezing compartment. After power is turned on, high-temperature and high-pressure refrigerant at the outlet of the freezing compressor 21 is condensed and releases heat in the freezing condenser 22, and the temperature is lowered. The saturated liquid-state refrigerant is delivered to the first freezing capillary 24 through the freezing filter 23, and the pressure and temperature are lowered. The refrigerant enters the first freezing evaporator 25 in a two-phase state and exchanges heat with air in the freezing compartment, thereby producing a refrigeration effect.

[0057] In the present embodiment, R600a is used as the refrigerant for both the refrigeration refrigeration cycle and the freezing refrigeration cycle. The two independent vapor compression refrigeration cycles in the present embodiment are responsible for refrigeration of different compartments. Among them, the refrigeration refrigeration cycle 10 composed of the refrigeration compressor 11, the refrigeration condenser 12, the refrigeration filter 13, the first refrigeration capillary 14 and the first refrigeration evaporator 15 is responsible for refrigeration of the refrigeration compartment. After power is turned on, high-temperature and high-pressure refrigerant at the outlet of the refrigeration compressor 11 is condensed and releases heat in the refrigeration condenser 12, and the temperature is lowered. The saturated liquid-state refrigerant is delivered to the first refrigeration capillary 14 through the refrigeration filter 13, and the pressure and temperature are lowered. The refrigerant enters the first refrigeration evaporator 15 in a two-phase state and exchanges heat with air in the refrigeration compartment, thereby producing a refrigeration effect.

[0058] The freezing compressor 21, the freezing condenser 22, the freezing filter 23, the first freezing capillary 24 and the first freezing evaporator 25 constitute a freezing refrigeration cycle 20 responsible for refrigeration of the freezing compartment. After power is turned on, high-temperature and high-pressure refrigerant at the outlet of the freezing compressor 21 is condensed and releases heat in the freezing condenser 22, and the temperature is lowered. The saturated liquid-state refrigerant is delivered to the first freezing capillary 24 through the freezing filter 23, and the pressure and temperature are lowered. The refrigerant enters the first freezing evaporator 25 in a two-phase state and exchanges heat with air in the freezing compartment, thereby producing a refrigeration effect.

[0059] Two independent compressors are used in the present embodiment to provide power for the refrigeration refrigeration cycle and the freezing refrigeration cycle, respectively. This design allows the refrigeration compartment and the freezing compartment to be independently temperature-adjusted without interfering with each other, thereby effectively reducing system temperature fluctuations. When the refrigeration compartment is frequently used or a large amount of food is stored, the refrigeration compressor can work independently to adjust the temperature of the refrigeration compartment without affecting the temperature stability of the freezing compartment. Similarly, the use of the freezing compartment will not affect the refrigeration compartment.

[0060] At the same time, the design of the double-compressor independent cycle allows the refrigeration compartment and the freezing compartment to be independently temperature-adjusted, reducing system temperature fluctuations and improving preservation effect. The optimized refrigeration cycle design and component layout reduce energy loss and improve refrigeration efficiency, thereby achieving the purpose of energy saving and consumption reduction. Due to the improvement of temperature stability and the realization of energy saving and consumption reduction, users can enjoy more stable and efficient refrigeration and freezing experience. The double-compressor design allows one compressor to malfunction while the other compressor still works normally, ensuring the continuous operation of the refrigerator and enhancing the reliability of the system.

[0061] In some embodiments of the present application, reference is made to Figure 2As shown, the refrigeration cycle 10 further comprises a second freezing capillary 27 and a second freezing evaporator 28. The refrigerant outlet of the first refrigeration evaporator 15 is connected to the refrigerant inlet of the second freezing capillary 27; the refrigerant outlet of the second freezing capillary 27 is connected to the refrigerant inlet of the second freezing evaporator 28; and the refrigerant outlet of the second freezing evaporator 28 is connected to the refrigerant inlet of the refrigeration compressor 11. The second freezing capillary 27 and the second freezing evaporator 28 are both arranged in the freezing compartment.

[0062] In this embodiment, the second freezing capillary 27 and the second freezing evaporator 28 are connected in series in the refrigeration cycle 10, so that when the refrigeration compressor 11 is started, it can not only provide cold energy for the refrigeration compartment, but also provide additional cold energy for the freezing compartment through the second freezing evaporator 28. The second freezing evaporator 28 is designed as a plate-and-tube evaporator and is attached to the inner side of the back of the freezing compartment. This layout ensures efficient heat exchange of the refrigerant in the second freezing evaporator 28, thereby improving the cooling rate of the freezing compartment.

[0063] The second freezing capillary 27 and the second freezing evaporator 28 serve as a supplementary structure, so that when deep freezing is not needed, only the original refrigeration cycle 10 can be relied on to work, and when needed, the second freezing evaporator 28 is started, thereby optimizing the efficiency of the refrigeration cycle.

[0064] The introduction of the second freezing evaporator 28 improves the cooling rate of the freezing compartment, so that food can reach the required refrigeration or freezing state faster, prolonging the shelf life of the food. The dual-compressor dual-cycle refrigeration refrigerator in this embodiment not only meets the daily refrigeration and freezing needs, but also can cope with the demand for deep cooling refrigeration in special situations, improving the applicability and flexibility of the refrigerator. When deep freezing is not needed, only the original refrigeration cycle 10 can be relied on to work, avoiding unnecessary energy consumption. At the same time, due to the arrangement of the second freezing capillary 27 and the second freezing evaporator 28, efficient use of refrigerant in the cycle is ensured, further reducing energy consumption.

[0065] In some embodiments of the present application, reference is made to Figure 3 As shown, the refrigeration cycle 10 further comprises a refrigeration bypass circuit 30; the refrigeration bypass circuit 30 comprises: a first electromagnetic valve 16, a second freezing capillary 27, and a second freezing evaporator 28.

[0066] The refrigerant inlet of the first electromagnetic valve 16 is connected to the refrigerant outlet of the refrigeration filter 13, and the refrigerant outlet of the first electromagnetic valve 16 is connected to the refrigerant inlet of the first refrigeration capillary tube 14 and the refrigerant inlet of the second freezing capillary tube 27; the refrigerant outlet of the second freezing capillary tube 27 is connected to the refrigerant inlet of the second freezing evaporator 28; the refrigerant outlet of the second freezing evaporator 28 is connected to the refrigerant inlet of the refrigeration compressor 11; the second freezing capillary tube 27 and the second freezing evaporator 28 are arranged in parallel with the first refrigeration capillary tube 14 and the first refrigeration evaporator 15.

[0067] The first electromagnetic valve 16 is arranged in the refrigeration compartment, and the second freezing capillary tube 27 and the second freezing evaporator 28 are arranged in the freezing compartment.

[0068] When the first electromagnetic valve 16 is opened, the refrigerant can pass through the refrigeration filter 13 and be divided by the first electromagnetic valve 16, part of which enters the first refrigeration capillary tube 14 and flows through the first refrigeration evaporator 15 to refrigerate the refrigeration compartment, and the other part enters the second freezing capillary tube 27 and flows through the second freezing evaporator 28 to refrigerate the freezing compartment. This parallel arrangement not only improves the flexibility of refrigeration, but also increases the refrigeration capacity of the freezing compartment when needed, thereby improving the overall refrigeration efficiency.

[0069] It can be understood that by controlling the opening and closing of the first electromagnetic valve 16, the refrigeration capacity of the refrigeration compartment and the freezing compartment can be accurately adjusted. When the refrigeration compartment needs more refrigeration capacity, the refrigerant flow through the second freezing capillary tube 27 and the second freezing evaporator 28 can be reduced, and vice versa. When the refrigeration compartment only needs less refrigeration capacity, the refrigerant flow through the second freezing capillary tube 27 and the second freezing evaporator 28 can be increased. This precise temperature control method helps to maintain the stability of the temperature in the refrigeration compartment and the freezing compartment, prolonging the preservation period and freezing period of food.

[0070] Further, when additional refrigeration of the freezing compartment is not required, the refrigerant flow through the second freezing capillary tube 27 and the second freezing evaporator 28 can be reduced by closing the first electromagnetic valve 16 or adjusting its opening degree, thereby reducing energy consumption. At the same time, since the second freezing evaporator 28 is designed as a plate-and-tube evaporator attached to the inside of the back of the freezing compartment, this layout helps to improve the heat exchange efficiency of the refrigerant in the evaporator, further reducing energy consumption.

[0071] The refrigeration bypass circuit 30 significantly improves the refrigeration performance of the refrigerator. Both the refrigeration compartment and the freezer compartment can achieve more uniform and stable refrigeration effect. By precisely controlling the opening and closing of the first electromagnetic valve 16, precise adjustment of the temperature of the refrigeration compartment and the freezer compartment can be achieved to meet the user's demand for different food preservation and freezing. The refrigeration performance and temperature control capability of the refrigerator are enhanced, making it more convenient for users to store and preserve food, improving user satisfaction and experience.

[0072] In some embodiments of the present application, a refrigeration compartment switch is also included, which is electrically connected to the first electromagnetic valve 16; the first electromagnetic valve 16 is configured to: when the refrigeration compartment switch is closed, the refrigeration compartment is enabled, and the first electromagnetic valve 16 is connected to the first refrigeration capillary tube 14; when the refrigeration compartment switch is opened, the refrigeration compartment is disabled, and the first electromagnetic valve 16 is connected to the second freezing capillary tube 27.

[0073] When the refrigeration compartment switch is closed, it indicates that the refrigeration compartment needs refrigeration, at which time the first electromagnetic valve 16 is connected to the first refrigeration capillary tube 14, and the refrigerant flows through the first refrigeration evaporator 15 to cool the refrigeration compartment. When the refrigeration compartment switch is opened, it indicates that the refrigeration compartment does not need refrigeration or needs to reduce energy consumption, at which time the first electromagnetic valve 16 switches to connect to the second freezing capillary tube 27, and more refrigerant flows to the second freezing evaporator 28 to strengthen the refrigeration of the freezer compartment or maintain its low temperature state, while reducing the flow of refrigerant through the refrigeration evaporator to achieve energy saving.

[0074] The first electromagnetic valve 16 enables the refrigeration path to be flexibly switched between the refrigeration compartment and the freezer compartment. This switching is not only based on the state of the refrigeration compartment switch, but also can be automatically adjusted according to sensor data such as temperature and humidity inside the refrigerator, further improving refrigeration efficiency and energy consumption management.

[0075] In some embodiments of the present application, referring to Figure 4 As shown in the refrigeration refrigeration cycle 20 also includes: a second refrigeration capillary tube 17 and a second refrigeration evaporator 18; the first freezing evaporator 25 refrigerant outlet is connected to the second refrigeration capillary tube 17 refrigerant inlet; the second refrigeration capillary tube 17 refrigerant outlet is connected to the second refrigeration evaporator 18 refrigerant inlet; the second refrigeration evaporator 18 refrigerant outlet is connected to the freezing compressor 21 refrigerant inlet; the second refrigeration capillary tube 17 and the second refrigeration evaporator 18 are both arranged in the refrigeration compartment.

[0076] In the refrigeration cycle 20, the original first freezing evaporator 25 is mainly used for refrigeration of the freezing chamber. However, in the present embodiment, by connecting the second refrigeration capillary tube 17 and the second refrigeration evaporator 18, the refrigerant can continue to flow through the second refrigeration evaporator 18 in the refrigeration chamber after completing the refrigeration task of the freezing chamber, thereby providing additional refrigeration capacity for the refrigeration chamber. In this way, the refrigeration efficiency of the refrigeration chamber is improved, and the temperature of the refrigeration chamber can be quickly reduced when needed to meet the user's demand for rapid cooling of refrigerated food.

[0077] The second refrigeration capillary tube 17 and the second refrigeration evaporator 18 serve as a supplementary part and work together with the original refrigeration cycle to complete the refrigeration task of the refrigeration chamber and the freezing chamber. This optimized refrigeration cycle structure significantly improves the refrigeration performance of the refrigerator while maintaining the stability and reliability of the system.

[0078] In some embodiments of the present application, referring to Figure 5 As shown in the refrigeration cycle 20 also includes a freezing bypass circuit 40; the freezing bypass circuit 40 includes: a second solenoid valve 26, a second refrigeration capillary tube 17 and a second refrigeration evaporator 18.

[0079] The refrigerant inlet of the second solenoid valve 26 is connected to the refrigerant outlet of the freezing filter 23; the refrigerant outlet of the second solenoid valve 26 is connected to the refrigerant inlet of the first freezing capillary tube 24 and the refrigerant inlet of the second refrigeration capillary tube 17; the refrigerant outlet of the second refrigeration capillary tube 17 is connected to the refrigerant inlet of the second refrigeration evaporator 18; the refrigerant outlet of the second refrigeration evaporator 18 is connected to the refrigerant inlet of the freezing compressor 21; the second refrigeration capillary tube 17 and the second refrigeration evaporator 18 are arranged in parallel with the first freezing capillary tube 24 and the first freezing evaporator 25.

[0080] The second solenoid valve 26 is arranged in the freezing chamber, and the second refrigeration capillary tube 17 and the second refrigeration evaporator 18 are arranged in the refrigeration chamber.

[0081] When the second solenoid valve 26 is opened, the refrigerant can pass through the freezing filter 23, and then be divided by the second solenoid valve 26, one part enters the first freezing capillary tube 24 and flows through the first freezing evaporator 25 to refrigerate the freezing chamber, and the other part enters the second refrigeration capillary tube 17 and flows through the second refrigeration evaporator 18 to refrigerate the refrigeration chamber. This parallel arrangement not only improves the flexibility of refrigeration, but also increases the refrigeration capacity of the refrigeration chamber when needed, thereby meeting the user's changing needs for refrigeration and freezing.

[0082] It can be understood that by controlling the opening and closing of the second electromagnetic valve 26, the refrigeration capacity of the refrigeration compartment and the freezing compartment can be accurately adjusted. When the freezing compartment needs more refrigeration capacity, the refrigerant flow through the second refrigeration capillary tube 17 and the second refrigeration evaporator 18 can be reduced; on the contrary, when the refrigeration compartment needs more refrigeration capacity, the refrigerant flow through the second refrigeration capillary tube 17 and the second refrigeration evaporator 18 can be increased. This flow control method helps to maintain the stability of the temperature in the refrigeration compartment and the freezing compartment, while optimizing the refrigeration efficiency and reducing unnecessary energy consumption.

[0083] Further, the introduction of the freezing bypass circuit 40 improves the refrigeration performance of the refrigerator. Both the refrigeration compartment and the freezing compartment can obtain more uniform and stable refrigeration effect. By accurately controlling the opening and closing of the second electromagnetic valve 26, the refrigeration capacity of the refrigeration compartment and the freezing compartment can be accurately adjusted to avoid unnecessary energy consumption. At the same time, due to the improvement of the refrigeration efficiency, it also helps to reduce the overall energy consumption level. Users can easily adjust the refrigeration capacity of the refrigeration compartment and the freezing compartment according to actual needs, improving the convenience and flexibility of use.

[0084] In some embodiments of the present application, a freezing compartment switch is further included, and the freezing compartment switch is electrically connected with the second electromagnetic valve 26; the second electromagnetic valve 26 is configured to: when the freezing compartment switch is closed, the freezing compartment is enabled, and the second electromagnetic valve 26 is connected with the first freezing capillary tube 24; when the freezing compartment switch is opened, the freezing compartment is disabled, and the second electromagnetic valve 26 is connected with the second refrigeration capillary tube 17.

[0085] Specifically, when the freezing compartment switch is closed, it indicates that the user wants to enable the refrigeration function of the freezing compartment, at this time the second electromagnetic valve 26 receives an electrical signal and connects the first freezing capillary tube 24, so that the refrigerant can flow through the first freezing evaporator 25 to refrigerate the freezing compartment. When the freezing compartment switch is opened, it indicates that the user wants to reduce the refrigeration capacity of the freezing compartment, at this time the second electromagnetic valve 26 will switch to a state of connecting the second refrigeration capillary tube 17, so that the refrigerant flows more to the second refrigeration evaporator 18 to refrigerate or maintain the temperature of the refrigeration compartment. At the same time, since the flow of refrigerant through the first freezing evaporator 25 is reduced or stopped, the refrigeration function of the freezing compartment is correspondingly disabled or weakened.

[0086] The second electromagnetic valve 26 enables the refrigeration path to be flexibly switched between the freezing compartment and the refrigeration compartment. This switching is not only based on the user's choice through the freezing compartment switch, but also can be automatically adjusted according to sensor data such as temperature and humidity inside the refrigerator, thereby further improving the refrigeration efficiency and energy consumption management.

[0087] In this embodiment, users can control the refrigeration functions of different compartments in the refrigerator through simple switch operations without deep understanding of the internal structure of the refrigerator or complex settings, improving the convenience and flexibility of use. When the freezing compartment needs to reduce the refrigeration capacity of the freezing compartment, the refrigeration path is switched to the refrigeration compartment, which can fully utilize the refrigeration capacity of the refrigerator while reducing unnecessary energy consumption, achieving the purpose of energy saving. Intelligent control and flexible switching of the refrigeration path enable the refrigerator to automatically adjust the refrigeration strategy according to the internal load and external environmental conditions, optimize the refrigeration efficiency, and ensure the best preservation state of food. By reasonably controlling the refrigeration functions of different compartments, the refrigerator can be prevented from being in a high-load running state for a long time, thereby reducing wear and tear and failure, and prolonging the service life of the refrigerator.

[0088] In some embodiments of the present application, the refrigeration condenser 12 and the freezing condenser 22 are bottom-mounted condensers; the refrigeration evaporator 15 and the freezing evaporator 25 are both finned evaporators.

[0089] Specifically, the bottom-mounted condenser is compact in design and does not occupy other space. The bottom-mounted condenser generally has good heat dissipation performance, ensuring efficient condensation process. The finned evaporator mainly consists of an evaporator shell, a finned tube bundle, a refrigerant distributor, a refrigerant return pipe, etc. The finned tube bundle is the core component of the evaporator, which is composed of multiple finned tubes and tube plates. The surface of the finned tube is covered with multiple metal fins, which increases the heat exchange area. It has high heat exchange efficiency, compact structure, and small footprint, suitable for places with limited space; stable operation, made of high-quality materials, with good corrosion resistance and wear resistance.

[0090] From the above, it can be seen that the present application provides a double-compressor double-cycle refrigeration refrigerator, which comprises: a refrigeration refrigeration cycle and a freezing refrigeration cycle; the refrigeration refrigeration cycle comprises: a refrigeration compressor, a refrigeration condenser, a refrigeration filter, a first refrigeration capillary tube and a first refrigeration evaporator, and all are arranged in the refrigeration compartment; the freezing refrigeration cycle comprises: a freezing compressor, a freezing condenser, a freezing filter, a first freezing capillary tube and a first freezing evaporator, and all are arranged in the freezing compartment. On the basis of realizing independent refrigeration of the refrigeration compartment and the freezing compartment by using double compressors, a set of capillary tubes and evaporators are added in series or in parallel in the refrigeration compartment or the freezing compartment, which improves the cooling rate of the refrigerator, reduces the working time of the compressor, and reduces the power consumption. By connecting or connecting a set of capillary tubes and evaporators in series or in parallel, the demand for diversified refrigeration temperature of the refrigeration compartment and the freezing compartment is met, especially the demand for deep cooling temperature of the freezing compartment.

[0091] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. A dual-compressor dual-cycle refrigeration refrigerator characterized by, Comprising: a refrigeration refrigeration cycle (10) and a freezing refrigeration cycle (20); The refrigeration refrigeration cycle (10) comprises: refrigeration compressor (11), refrigeration condenser (12), refrigeration filter (13), the first refrigeration capillary (14) and the first refrigeration evaporator (15); The refrigeration compressor (11) refrigerant outlet is connected to the refrigeration condenser (12) refrigerant inlet, the refrigeration condenser (12) refrigerant outlet is connected to the refrigeration filter (13) refrigerant inlet, the refrigeration filter (13) refrigerant outlet is connected to the first refrigeration capillary (14) refrigerant inlet, the first refrigeration capillary (14) refrigerant outlet is connected to the first refrigeration evaporator (15) refrigerant inlet, the first refrigeration evaporator (15) refrigerant outlet is connected to the refrigeration compressor (11) refrigerant inlet; The refrigeration compressor (11), refrigeration condenser (12), refrigeration filter (13), the first refrigeration capillary (14) and the first refrigeration evaporator (15) are all arranged in the refrigeration chamber; The freezing refrigeration cycle (20) comprises: freezing compressor (21), freezing condenser (22), freezing filter (23), the first freezing capillary (24) and the first freezing evaporator (25); The freezing compressor (21) refrigerant outlet is connected to the freezing condenser (22) refrigerant inlet, the freezing condenser (22) refrigerant outlet is connected to the freezing filter (23) refrigerant inlet, the freezing filter (23) refrigerant outlet is connected to the first freezing capillary (24) refrigerant inlet, the first freezing capillary (24) refrigerant outlet is connected to the first freezing evaporator (25) refrigerant inlet, the first freezing evaporator (25) refrigerant outlet is connected to the freezing compressor (21) refrigerant inlet; The freezing compressor (21), freezing condenser (22), freezing filter (23), the first freezing capillary (24) and the first freezing evaporator (25) are all arranged in the freezing chamber.

2. A dual-compressor dual-cycle refrigeration refrigerator according to claim 1, characterized in that, The refrigeration refrigeration cycle (10) further comprises a second freezing capillary (27) and a second freezing evaporator (28); The first refrigeration evaporator (15) refrigerant outlet is connected to the second freezing capillary (27) refrigerant inlet; the second freezing capillary (27) refrigerant outlet is connected to the second freezing evaporator (28) refrigerant inlet; the second freezing evaporator (28) refrigerant outlet is connected to the refrigeration compressor (11) refrigerant inlet; The second freezing capillary (27) and the second freezing evaporator (28) are all arranged in the freezing chamber.

3. The dual-compressor dual-cycle refrigeration refrigerator of claim 1, wherein, The refrigeration refrigeration cycle (10) further comprises a refrigeration bypass circuit (30); The refrigeration bypass circuit (30) comprises: a first solenoid valve (16), a second freezing capillary (27) and a second freezing evaporator (28); The refrigerant inlet of the first electromagnetic valve (16) is connected to the refrigerant outlet of the refrigeration filter (13), and the refrigerant outlet of the first electromagnetic valve (16) is connected to the refrigerant inlet of the first refrigeration capillary (14) and the refrigerant inlet of the second freezing capillary (27); The refrigerant outlet of the second freezing capillary (27) is connected to the refrigerant inlet of the second freezing evaporator (28), and the refrigerant outlet of the second freezing evaporator (28) is connected to the refrigerant inlet of the refrigeration compressor (11); The second freezing capillary (27) and the second freezing evaporator (28) are arranged in parallel with the first refrigeration capillary (14) and the first refrigeration evaporator (15); The first electromagnetic valve (16) is arranged in the refrigeration compartment, and the second freezing capillary (27) and the second freezing evaporator (28) are arranged in the freezing compartment.

4. A dual-compressor dual-cycle refrigeration refrigerator according to claim 3, wherein, A refrigeration compartment switch is further included, which is electrically connected to the first electromagnetic valve (16); When the refrigeration compartment switch is closed, the refrigeration compartment is enabled, and the first electromagnetic valve (16) communicates with the first refrigeration capillary (14); When the refrigeration compartment switch is closed, the refrigeration compartment is enabled, and the first electromagnetic valve (16) communicates with the second freezing capillary (27).

5. The dual-compressor dual-cycle refrigeration ice refrigerator of claim 1, wherein, The refrigeration refrigeration cycle (20) further includes a second refrigeration capillary (17) and a second refrigeration evaporator (18); The refrigerant outlet of the first freezing evaporator (25) is connected to the refrigerant inlet of the second refrigeration capillary (17), the refrigerant outlet of the second refrigeration capillary (17) is connected to the refrigerant inlet of the second refrigeration evaporator (18), and the refrigerant outlet of the second refrigeration evaporator (18) is connected to the refrigerant inlet of the freezing compressor (21); The second refrigeration capillary (17) and the second refrigeration evaporator (18) are arranged in the refrigeration compartment.

6. The dual-compressor dual-cycle refrigeration ice refrigerator of claim 1, wherein, The refrigeration refrigeration cycle (20) further includes a freezing bypass circuit (40); The refrigeration refrigeration cycle (20) further includes a freezing bypass circuit (40); The refrigerant inlet of the second electromagnetic valve (26) is connected to the refrigerant outlet of the freezing filter (23), and the refrigerant outlet of the second electromagnetic valve (26) is connected to the refrigerant inlet of the first freezing capillary (24) and the refrigerant inlet of the second refrigeration capillary (17); The refrigerant outlet of the second refrigeration capillary (17) is connected to the refrigerant inlet of the second refrigeration evaporator (18), and the refrigerant outlet of the second refrigeration evaporator (18) is connected to the refrigerant inlet of the freezing compressor (21); The second refrigeration capillary (17) and the second refrigeration evaporator (18) are arranged in parallel with the first freezing capillary (24) and the first freezing evaporator (25); The second electromagnetic valve (26) is arranged in the freezing compartment, and the second refrigeration capillary (17) and the second refrigeration evaporator (18) are arranged in the refrigeration compartment.

7. A dual-compressor dual-cycle refrigeration refrigerator as defined in claim 6, wherein Further comprising a freezing compartment switch, which is electrically connected with the second electromagnetic valve (26); The second electromagnetic valve (26) is configured to: when the freezing compartment switch is closed, the freezing compartment is enabled, and the second electromagnetic valve (26) is communicated with the first freezing capillary (24); When the freezing compartment switch is closed, the freezing compartment is disabled, and the second electromagnetic valve (26) is communicated with the second refrigeration capillary (17).

8. A dual-compressor dual-cycle refrigeration refrigerator according to any one of claims 1-7, characterized in that, The refrigeration condenser (12) and the freezing condenser (22) are bottom-mounted condensers; the refrigeration evaporator (15) and the freezing evaporator (25) are both finned evaporators.

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