Refrigerator

Abstract

The invention discloses a refrigerator, a refrigerator body is arranged in the refrigerator, and at least one storage chamber and a quick-freezing chamber are formed in the refrigerator body; the refrigerating system comprises a double-suction compressor, a condenser, a main capillary tube, an auxiliary capillary tube, a control valve, a main evaporator and an auxiliary evaporator; the main evaporator is used for cooling the storage chamber; the auxiliary evaporator is used for cooling the quick-freezing chamber; an exhaust pipe of the double-suction compressor is sequentially connected with the condenser, the main capillary tube and the main evaporator through pipelines and then is connected to a main suction pipe of the double-suction compressor to form a main refrigeration cycle; an exhaust pipe of the double-suction compressor sequentially passes through the condenser, the main capillary tube, the control valve, the auxiliary capillary tube and the auxiliary evaporator through a pipeline and then is connected to an auxiliary suction pipe of the double-suction compressor, and an auxiliary refrigeration cycle is formed. And the influence of the rapid refrigeration function on the normal refrigeration function of the refrigerator and the energy consumption of the refrigerator is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigerators, and in particular to a refrigerator. Background Art

[0002] At present, household electrical appliances are developing in the direction of high-end, younger, and more in line with user needs. At present, users have a strong demand for extremely fast cooling, and hope to get chilled drinks, ice cubes or fruits and vegetables in a short time. In order to solve the above problems, the existing technology adds a quick cooling chamber to the refrigerator, that is, the box is divided into a refrigerator, a freezer and a quick cooling chamber, and the quick cooling chamber is passed through the additional quick cooling evaporator. However, in fact, users do not need to use the quick cooling function most of the time. At this time, the existence of the quick cooling chamber is equivalent to wasting cold energy, resulting in increased energy consumption of the refrigerator and affecting the cooling efficiency of the refrigeration system for the refrigerator and freezer. Summary of the invention

[0003] An object of the embodiments of the present invention is to provide a refrigerator that reduces the impact of a rapid refrigeration function on a normal refrigeration function of the refrigerator and the energy consumption of the refrigerator.

[0004] To achieve the above object, an embodiment of the present invention provides a refrigerator, comprising:

[0005] A box body, wherein at least one storage chamber and a quick freezing chamber are formed in the box body;

[0006] A refrigeration system, comprising a double suction compressor, a condenser, a main capillary tube, a secondary capillary tube, a control valve, a main evaporator and a secondary evaporator;

[0007] The main evaporator is used to cool the storage chamber;

[0008] The auxiliary evaporator is used to cool the quick freezing chamber;

[0009] The exhaust pipe of the double suction compressor is connected to the condenser, the main capillary tube and the main evaporator in sequence through a pipeline, and then connected to the main suction pipe of the double suction compressor to form a main refrigeration cycle;

[0010] The exhaust pipe of the double suction compressor passes through the condenser, the main capillary tube, the control valve, the secondary capillary tube and the secondary evaporator in sequence through a pipeline, and is connected to the secondary suction pipe of the double suction compressor to form a secondary refrigeration cycle.

[0011] Preferably, the refrigerator further comprises:

[0012] Controller;

[0013] The controller is configured to:

[0014] When receiving a command to start the rapid cooling function, the control valve which is in a closed state by default is switched to an open state;

[0015] The double suction compressor is controlled to firstly suction and expand the refrigerant of the secondary refrigeration cycle through the secondary suction pipe, then suction and expand the refrigerant of the primary refrigeration cycle through the primary suction pipe, and then discharge the refrigerant through the exhaust pipe.

[0016] As an improvement of the above solution, the refrigeration system further includes:

[0017] A gas-liquid separator, the main evaporator is connected to the main suction pipe through the gas-liquid separator, and the gas-liquid separator is used to store refrigerant;

[0018] The controller is configured to:

[0019] When receiving a command to turn off the rapid cooling function, the control valve in the open state is switched to the closed state;

[0020] The double suction compressor is controlled to expand the refrigerant of the main refrigeration cycle through the main suction pipe, and then the refrigerant is discharged through the exhaust pipe, and the gas-liquid separator is controlled to store excess refrigerant in the main refrigeration cycle.

[0021] Preferably, the refrigerator further comprises:

[0022] A temperature sensor is disposed in the freezing chamber and is used to detect the temperature of the freezing chamber;

[0023] The controller is also configured to:

[0024] After receiving the rapid freezing function start instruction, detecting the current temperature of the rapid freezing chamber;

[0025] When the detected current temperature is lower than the preset quick freezing temperature, the control valve is switched to a closed state and a take-out alarm is fed back.

[0026] Preferably, the refrigerator further comprises:

[0027] A drying filter, wherein the condenser is connected to the main capillary tube through the drying filter.

[0028] An embodiment of the present invention further provides a refrigerator, comprising:

[0029] A box body, wherein at least one storage chamber and a quick freezing chamber are formed in the box body;

[0030] A refrigeration system, the refrigeration system is used to provide coldness to cool the storage room;

[0031] The refrigeration system comprises a double suction compressor, a condenser, a main capillary tube, a secondary capillary tube, a control valve, a main evaporator and a secondary evaporator;

[0032] The main evaporator is used to cool the storage chamber;

[0033] The auxiliary evaporator is used to cool the quick freezing chamber;

[0034] The control valve is a one-inlet and two-outlet valve;

[0035] The exhaust pipe of the double suction compressor is connected to the main suction pipe of the double suction compressor through a pipeline, which passes through the condenser, the input end of the control valve, the first output end of the control valve, the main capillary tube and the main evaporator in sequence, to form a main refrigeration cycle;

[0036] The exhaust pipe of the double suction compressor passes through the condenser, the input end of the control valve, the second output end of the control valve, the secondary capillary tube and the secondary evaporator in sequence through a pipeline, and is connected to the secondary suction pipe of the double suction compressor to form a secondary refrigeration cycle.

[0037] Furthermore, the refrigerator further comprises:

[0038] Controller;

[0039] The controller is configured to:

[0040] When receiving a dual refrigeration function start instruction, the first output end and the second output end of the control valve are switched to an open state;

[0041] The double suction compressor is controlled to firstly suction and expand the refrigerant of the secondary refrigeration cycle through the secondary suction pipe, then suction and expand the refrigerant of the primary refrigeration cycle through the primary suction pipe, and then discharge the refrigerant through the exhaust pipe.

[0042] As an improvement of the above solution, the refrigeration system further includes:

[0043] a first gas-liquid separator, the main evaporator is connected to the main suction pipe through the first gas-liquid separator, and the first gas-liquid separator is used to store excess refrigerant in the main refrigeration cycle;

[0044] a second gas-liquid separator, the auxiliary evaporator is connected to the auxiliary suction pipe through the second gas-liquid separator, and the second gas-liquid separator is used to store excess refrigerant in the auxiliary refrigeration cycle;

[0045] The controller is also configured to:

[0046] When receiving a single quick-freeze function start instruction, the first output end of the control valve is switched to a closed state, and the second output end is switched to an open state;

[0047] The double suction compressor is controlled to suction and expand the refrigerant of the sub-refrigeration cycle through the sub-suction pipe, and then discharge the refrigerant through the exhaust pipe, and the second gas-liquid separator is controlled to store excess refrigerant in the sub-refrigeration cycle.

[0048] Furthermore, the controller is also configured to:

[0049] When receiving a single cooling function start instruction, the second output end of the control valve is switched to a closed state, and the first output end is switched to an open state;

[0050] The double suction compressor is controlled to expand the refrigerant of the main refrigeration cycle through the main suction pipe, and then the refrigerant is discharged through the exhaust pipe, and the first gas-liquid separator is controlled to store excess refrigerant in the main refrigeration cycle.

[0051] Preferably, the refrigerator further comprises:

[0052] A main drying filter, wherein the first output end of the control valve is connected to the main capillary tube through the main drying filter;

[0053] A secondary drying filter, wherein the second output end of the control valve is connected to the secondary capillary tube through the secondary drying filter.

[0054] Compared with the prior art, the refrigerator disclosed in the present invention has a box body arranged inside the refrigerator, in which at least one storage room and a quick freezing room are formed; a refrigeration system, wherein the refrigeration system comprises a double suction compressor, a condenser, a main capillary tube, a secondary capillary tube, a control valve, a main evaporator and a secondary evaporator; the main evaporator is used to cool the storage room; the secondary evaporator is used to cool the quick freezing room; the exhaust pipe of the double suction compressor is connected to the main suction pipe of the double suction compressor through a pipeline in sequence through the condenser, the main capillary tube, the control valve, the secondary capillary tube and the secondary evaporator, and then connected to the secondary suction pipe of the double suction compressor, forming a secondary refrigeration cycle. Reduce the influence of the rapid refrigeration function on the normal refrigeration function and energy consumption of the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 is a schematic diagram of the external structure of a refrigerator provided by an embodiment of the present invention;

[0056] Figure 2is a schematic diagram of the internal structure of a refrigerator provided by an embodiment of the present invention;

[0057] Figure 3 is a schematic structural diagram of a refrigeration system of a refrigerator provided by another embodiment of the present invention;

[0058] Figure 4 is a structural schematic diagram of a refrigeration system of a refrigerator provided by another embodiment of the present invention;

[0059] Figure 5 It is a flowchart of the steps executed by the controller provided by the present invention;

[0060] Figure 6 is a schematic diagram of the connection between the controller and other hardware devices provided by an embodiment of the present invention;

[0061] Figure 7 is a schematic diagram of a specific control flow of a controller provided in an embodiment of the present invention;

[0062] Figure 8 is a structural schematic diagram of a refrigeration system of a refrigerator provided by another embodiment of the present invention;

[0063] Fig. 9 is a structural schematic diagram of a refrigeration system of a refrigerator provided by another embodiment of the present invention;

[0064] Fig.10 is a flowchart of steps executed by a controller provided in another embodiment of the present invention;

[0065] Fig.11 It is a structural schematic diagram of a refrigeration system of a refrigerator provided in yet another embodiment of the present invention.

[0066] Among them, 100, refrigerator; 1, compressor; 2, evaporator; 3, capillary; 4, condenser. DETAILED DESCRIPTION

[0067] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0068] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0069] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0070] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0071] See also Figure 1 , Figure 1 1 is a schematic diagram of the external structure of a refrigerator 100 provided in an embodiment of the present invention. The refrigerator 100 of this embodiment is approximately rectangular in shape. The refrigerator includes a box body defining a storage space and a plurality of door bodies arranged at the opening of the box body, wherein the door body includes a door body shell located outside the box body, a door body liner located inside the box body, an upper end cover, a lower end cover, and an insulation layer located between the door body shell, the door body liner, the upper end cover, and the lower end cover; usually, the insulation layer is filled with foam. The box body is provided with a chamber, wherein the chamber includes a component storage chamber for placing components in the refrigerator, such as a press cabin, etc., and also includes a storage space for storing food, etc.

[0072] See also Figure 2 , Figure 2 : is a schematic diagram of the internal structure of a refrigerator provided by an embodiment of the present invention. The storage space can be divided into multiple storage rooms. The storage rooms can be configured as refrigerators and freezers according to different uses. They can also include variable temperature rooms, vacuum drawers, moisturizing drawers, etc. Each storage room corresponds to one or more door bodies, for example, Figure 2The upper storage room is provided with a double-opening door body. The door body can be pivotally arranged at the opening of the box body, and can also be opened in a drawer-like manner to achieve drawer-like storage. The refrigerator door is provided with a display screen, which is used to display prompt information and receive user touch operations.

[0073] See also Figure 3 , is a schematic diagram of the structure of the refrigeration system in the refrigerator provided by an embodiment of the present invention, the refrigeration system includes a compressor 1, an evaporator 2, a drying filter (not shown in the figure), a capillary tube 3, a condenser 4 and a gas-liquid separator (not shown in the figure). The working process of the refrigeration system includes a compression process, a condensation process, a throttling process and an evaporation process. Among them, the compression process is: plug in the power cord of the refrigerator, when the contacts of the thermostat are connected, the compressor 1 starts to work, and the low-temperature and low-pressure refrigerant is sucked into the compressor 1, and is compressed into a high-temperature and high-pressure superheated gas in the cylinder of the compressor 1 and then discharged to the condenser 4; the condensation process is: the high-temperature and high-pressure refrigerant gas dissipates heat through the condenser 4, the temperature continues to drop, and is gradually cooled to a saturated vapor of normal temperature and high pressure, and is further cooled to a saturated liquid, and the temperature no longer drops. The temperature at this time is called the condensation temperature, and the pressure of the refrigerant remains almost unchanged during the entire condensation process; the throttling process is as follows ... The process is as follows: the condensed refrigerant saturated liquid is filtered through a drying filter to remove moisture and impurities and then flows into the capillary 3, through which it is throttled and depressurized, and the refrigerant becomes wet steam at room temperature and low pressure; the evaporation process is as follows: the wet steam at room temperature and low pressure begins to absorb heat and vaporize in the evaporator 2, which not only reduces the temperature of the evaporator 2 and its surroundings, but also turns the refrigerant into a low-temperature, low-pressure gas. The refrigerant coming out of the evaporator 2 passes through the gas-liquid separator and returns to the compressor 1 again, repeating the above process to transfer the heat in the refrigerator to the air outside the box, thereby achieving the purpose of refrigeration.

[0074] An embodiment of the present invention provides a refrigerator, comprising:

[0075] A box body, wherein at least one storage chamber and a quick freezing chamber are formed in the box body;

[0076] A refrigeration system, comprising a double suction compressor, a condenser, a main capillary tube, a secondary capillary tube, a control valve, a main evaporator and a secondary evaporator;

[0077] The main evaporator is used to cool the storage chamber;

[0078] The auxiliary evaporator is used to cool the quick freezing chamber;

[0079] The exhaust pipe of the double suction compressor is connected to the condenser, the main capillary tube and the main evaporator in sequence through a pipeline, and then connected to the main suction pipe of the double suction compressor to form a main refrigeration cycle;

[0080] The exhaust pipe of the double suction compressor passes through the condenser, the main capillary tube, the control valve, the secondary capillary tube and the secondary evaporator in sequence through a pipeline, and is connected to the secondary suction pipe of the double suction compressor to form a secondary refrigeration cycle.

[0081] When this embodiment is implemented, see Figure 4 , is a schematic diagram of a refrigeration system of a refrigerator provided by another embodiment of the present invention. The refrigerator provided by this embodiment is provided with a storage chamber and a quick freezing chamber.

[0082] The storage room is used to store safe or frozen food or items, and the freezing room is used to obtain chilled drinks, ice cubes or fruits and vegetables in a short time. When setting up a freezing room in a conventional refrigerator, it is necessary to add a special air vent or a special evaporator on the basis of the original refrigeration system. Without adding evaporator components, the special air vent solution is adopted, the cooling speed is slow and it will affect the cooling capacity supply in the same room, resulting in room temperature fluctuations. In the case of adding a special evaporator component, the special evaporator is set in the refrigeration cycle of the original evaporator and can only operate in a single working condition, which will affect the refrigeration effect of the original refrigeration cycle, and when the freezing room is not in use, the temperature will continue to drop, resulting in additional energy loss.

[0083] The refrigeration system comprises a compressor, a condenser, a main capillary tube, a secondary capillary tube, a control valve, a main evaporator and a secondary evaporator.

[0084] The compressor is specifically a double-suction compressor, which includes two suction pipes and an exhaust pipe, wherein the two suction pipes are a main suction pipe and an auxiliary suction pipe.

[0085] The exhaust pipe of the compressor is connected to the air inlet of the condenser through a pipeline, the exhaust port of the condenser is connected to the main capillary through a pipeline, the exhaust port of the main capillary is connected to the air inlet of the main evaporator through a pipeline, and the exhaust port of the main evaporator is connected to the main suction pipe of the compressor through a pipeline.

[0086] The exhaust port of the main capillary is also connected to the air inlet of the control valve through a pipeline, the exhaust port of the control valve is connected to the air inlet of the auxiliary capillary through a pipeline, the exhaust port of the auxiliary capillary is connected to the air inlet of the auxiliary evaporator through a pipeline, and the exhaust port of the auxiliary evaporator is connected to the auxiliary suction pipe of the compressor through a pipeline.

[0087] The refrigeration system of the refrigerator provided in the present application includes two refrigeration cycles. The main refrigeration cycle is composed of a compressor, a condenser, a main capillary tube, and a main evaporator. In this refrigeration cycle, the conventional storage chamber of the refrigerator is cooled through the main evaporator through the throttling effect of the main capillary tube.

[0088] The auxiliary refrigeration cycle is composed of a compressor, a condenser, a main capillary tube, a secondary capillary tube and a secondary evaporator. In this refrigeration cycle, a lower evaporation temperature is achieved through the throttling effect of the main capillary tube and the secondary throttling of the secondary capillary tube, and the refrigerator's freezer compartment is quickly cooled down through the auxiliary evaporator.

[0089] It should be noted that the storage compartment of the refrigerator includes a refrigerating compartment and / or a freezing compartment, and the storage compartment is cooled and cooled by a main evaporator through a main refrigeration cycle.

[0090] In the present application, the refrigeration circuit of the auxiliary evaporator is controlled by a control valve. When the quick freezing function is not turned on, the control valve is closed, and the main suction pipe of the compressor is controlled to inhale air. The refrigeration system only works on the main refrigeration circuit. At this time, the refrigeration system only cools the storage room of the refrigerator through the main evaporator. When the quick freezing function needs to be turned on, the control valve is opened, and the compressor inhales air through the main suction pipe and the auxiliary suction pipe. At this time, both the main refrigeration cycle and the auxiliary refrigeration cycle start to work, and the storage room is cooled by the main evaporator, and the quick freezing room is cooled by the auxiliary evaporator through the refrigerant that has passed the secondary throttling.

[0091] The present application controls the quick freezing refrigeration circuit through a control valve, and adjusts various working conditions through a double-suction compressor, operates under different working conditions under different functions, avoids energy loss, avoids cooling loss, and improves the working efficiency of the refrigeration system.

[0092] In another embodiment of the present invention, the refrigerator further comprises a controller. Figure 5 , is a flow chart of the steps executed by the controller provided by the present invention. The controller executes the following steps:

[0093] Step S1, when receiving a rapid cooling function start instruction, switching the control valve which is in a closed state by default to an open state;

[0094] Step S2, controlling the double suction compressor to firstly suction and expand the refrigerant of the secondary refrigeration cycle through the secondary suction pipe, then suction and expand the refrigerant of the primary refrigeration cycle through the primary suction pipe, and then discharge the refrigerant through the exhaust pipe.

[0095] In the specific implementation of this embodiment, the refrigerator is also equipped with a controller, see Figure 6 , is a schematic diagram of the connection between the controller and other hardware devices provided in an embodiment of the present invention.

[0096] The controller is connected with the compressor and the control valve respectively, and the controller controls and starts the quick freezing function in parallel.

[0097] See also Figure 7 , is a schematic diagram of a specific control flow of a controller provided in an embodiment of the present invention. The controller specifically performs the following steps:

[0098] Step S701, the refrigerator operates normally, that is, the refrigerator operates normally in the default working state of the refrigerator, and the control valve should be in a closed state.

[0099] Step S702, determining whether the rapid cooling function is turned on.

[0100] It should be noted that the judgment on whether to turn on the rapid cooling function specifically includes: detecting whether a rapid cooling function turn-on instruction input by a user is received, or the refrigerator automatically generates a rapid cooling function turn-on instruction when it actively detects that the turn-on condition is met. For example, the refrigerator makes a judgment by detecting the items stored in the freezing chamber and the temperature of the items. When it is detected that there are items in the freezing chamber and the temperature of the items is not lower than the first threshold, a rapid cooling function turn-on instruction is generated.

[0101] If yes, execute step S703;

[0102] If not, perform other control steps;

[0103] Step S703, switching the control valve to an open state;

[0104] Step S704, controlling the compressor to absorb air through the secondary suction pipe to expand the refrigerant of the secondary refrigeration cycle;

[0105] Step S705, controlling the compressor to expand the refrigerant of the main refrigeration cycle through the main suction pipe;

[0106] Step S706, controlling the compressor to exhaust.

[0107] That is, after starting the rapid cooling function, the control valve is switched to the open state, the auxiliary refrigeration cycle is started, and the auxiliary evaporator is used to cool the quick freezing chamber. After starting the auxiliary refrigeration cycle, the double-suction compressor sucks in air and then compresses it in stages according to the working conditions. That is, the compressor first sucks in air to expand the refrigerant of the auxiliary refrigeration cycle and then sucks in air to expand the refrigerant of the main refrigeration cycle to achieve two-stage suction compression, thereby increasing the system suction and exhaust volume.

[0108] By performing suction compression in stages through a double suction compressor, the system suction and exhaust volumes can be increased, the refrigeration system power can be increased, and the blast chamber can be rapidly cooled through a secondary refrigeration cycle.

[0109] In another embodiment provided by the present invention, the refrigeration system further comprises:

[0110] A gas-liquid separator, the main evaporator is connected to the main suction pipe through the gas-liquid separator, and the gas-liquid separator is used to store refrigerant;

[0111] The controller is configured to:

[0112] When receiving a command to turn off the rapid cooling function, the control valve in the open state is switched to the closed state;

[0113] The double suction compressor is controlled to expand the refrigerant of the main refrigeration cycle through the main suction pipe, and then the refrigerant is discharged through the exhaust pipe, and the gas-liquid separator is controlled to store excess refrigerant in the main refrigeration cycle.

[0114] When this embodiment is implemented, see Figure 8 , is a structural schematic diagram of a refrigeration system of a refrigerator provided in yet another embodiment of the present invention.

[0115] In the refrigeration cycle provided in this embodiment, the refrigeration system further includes a gas-liquid separator, and the gas-liquid separator is used to store refrigerant.

[0116] The gas-liquid separator is installed in the main refrigeration cycle, the exhaust pipe of the compressor is connected to the air inlet of the condenser through a pipeline, the exhaust port of the condenser is connected to the main capillary tube through a pipeline, the exhaust port of the main capillary tube is connected to the air inlet of the main evaporator through a pipeline, the exhaust port of the main evaporator is connected to the air inlet of the gas-liquid separator through a pipeline, and the exhaust port of the gas-liquid separator is connected to the main suction pipe of the compressor through a pipeline.

[0117] See also Figure 7 When the controller is specifically executed, if it is determined in step S702 that the rapid cooling function is not turned on, the following steps are performed.

[0118] Step S707, controlling the compressor to inhale and expand the refrigerant of the main refrigeration cycle through the main suction pipe;

[0119] Step S708, controlling the compressor to discharge the refrigerant through the exhaust pipe;

[0120] Step S709, control the gas-liquid separator to store excess refrigerant in the main refrigeration cycle, and return to step S702.

[0121] When the rapid cooling function is in the off state, only the main suction pipe of the compressor is actually connected and working, and the auxiliary suction pipe has no actual suction volume because the control valve pipeline is closed. At this time, only the main refrigeration cycle system is working, and the excess refrigerant required for the auxiliary refrigeration cycle operation is stored through the gas-liquid separator and does not participate in the system circulation, thereby reducing the amount of refrigerant input, reducing the amount of cooling required for the refrigeration system to work, and reducing working energy consumption.

[0122] In another embodiment provided by the present invention, the refrigerator further comprises:

[0123] A temperature sensor is disposed in the freezing chamber and is used to detect the temperature of the freezing chamber;

[0124] The controller is also configured to:

[0125] After receiving the rapid freezing function start instruction, detecting the current temperature of the rapid freezing chamber;

[0126] When the detected current temperature is lower than the preset quick freezing temperature, the control valve is switched to a closed state and a take-out alarm is fed back.

[0127] When this embodiment is implemented, see Figure 4 The refrigerator also includes a temperature sensor, which is arranged in the quick-freezing chamber. The controller is connected to the temperature sensor to detect the temperature in the quick-freezing chamber through the temperature sensor.

[0128] See also Figure 7 After receiving the rapid cooling function start instruction, the controller executes the control of the rapid cooling function and also performs the following steps.

[0129] Step S710, detecting the current temperature T of the freezing chamber.

[0130] Step S711, determine whether T < T 0 Is it true. That is, it is determined whether the current temperature is lower than the preset freezing temperature T 0 .

[0131] If yes, execute step S712;

[0132] If not, return to step S704 to continue to control the rapid cooling function.

[0133] Step S712, switching the control valve to a closed state;

[0134] Step S713, feedback the alarm for taking out items, and execute step S707. That is, when the temperature of the quick freezing chamber is lower than the quick freezing temperature, it indicates that the quick cooling function has completed the quick cooling of the items in the quick freezing chamber, and no quick cooling is required. At this time, the alarm for taking out items is output to remind the user to take out the items, and the quick cooling function is turned off to switch to normal working conditions. The control valve is switched to the closed state. The refrigerant of the main refrigeration cycle is expanded by suction through the main suction pipe, and then the refrigerant is discharged through the exhaust pipe, and the gas-liquid separator is controlled to store the excess refrigerant in the main refrigeration cycle.

[0135] By monitoring the temperature of the freezing chamber, the rapid freezing function is turned off after the items in the freezing chamber are rapidly chilled to reduce energy consumption, and a reminder to take items out is output to prevent the items in the freezing chamber from being completely frozen due to long-term rapid freezing, resulting in damage or inedibility, thereby improving the safety of the rapid freezing function.

[0136] In another embodiment provided by the present invention, the refrigerator further comprises:

[0137] A drying filter, wherein the condenser is connected to the main capillary tube through the drying filter.

[0138] When this embodiment is implemented, see Figure 8 In the refrigeration cycle provided in this embodiment, the refrigeration system also includes a drying filter.

[0139] The exhaust pipe of the compressor is connected to the air inlet of the condenser through a pipeline, the exhaust port of the condenser is connected to the air inlet of the filter drier through a pipeline, the exhaust port of the filter drier is connected to the main capillary tube and the air inlet of the control valve through pipelines. The exhaust port of the main capillary tube is connected to the air inlet of the main evaporator through a pipeline, and the exhaust port of the main evaporator is connected to the main suction pipe of the compressor through a pipeline.

[0140] The exhaust port of the control valve is connected to the air inlet of the auxiliary capillary through a pipeline, the exhaust port of the auxiliary capillary is connected to the air inlet of the auxiliary evaporator through a pipeline, and the exhaust port of the auxiliary evaporator is connected to the auxiliary suction pipe of the compressor through a pipeline.

[0141] The filter drier is used to filter out harmful substances such as moisture, acidic substances, solid impurities and paraffin in the refrigerant to avoid hydrolysis of the refrigerant and lubricating oil, corrosion of metals, blockage of capillaries and expansion valves, and other faults.

[0142] Connecting the drying filter to the exhaust port of the condenser can filter the refrigerant passing through the condenser, that is, it can filter the main refrigeration cycle and the auxiliary refrigeration cycle at the same time to ensure the stability of the refrigeration system.

[0143] A refrigerator provided in another embodiment of the present invention includes:

[0144] A box body, wherein at least one storage chamber and a quick freezing chamber are formed in the box body;

[0145] A refrigeration system, the refrigeration system is used to provide coldness to cool the storage room;

[0146] The refrigeration system comprises a double suction compressor, a condenser, a main capillary tube, a secondary capillary tube, a control valve, a main evaporator and a secondary evaporator;

[0147] The main evaporator is used to cool the storage chamber;

[0148] The auxiliary evaporator is used to cool the quick freezing chamber;

[0149] The control valve is a one-inlet and two-outlet valve;

[0150] The exhaust pipe of the double suction compressor is connected to the main suction pipe of the double suction compressor through a pipeline, which passes through the condenser, the input end of the control valve, the first output end of the control valve, the main capillary tube and the main evaporator in sequence, to form a main refrigeration cycle;

[0151] The exhaust pipe of the double suction compressor passes through the condenser, the input end of the control valve, the second output end of the control valve, the secondary capillary tube and the secondary evaporator in sequence through a pipeline, and is connected to the secondary suction pipe of the double suction compressor to form a secondary refrigeration cycle.

[0152] When this embodiment is implemented, see Fig. 9 , is a structural schematic diagram of a refrigerator refrigeration system provided by another embodiment of the present invention, wherein the refrigeration system includes a compressor, a condenser, a main capillary tube, a secondary capillary tube, a control valve, a main evaporator and a secondary evaporator.

[0153] The compressor is specifically a double-suction compressor, which includes two suction pipes and an exhaust pipe, wherein the two suction pipes are a main suction pipe and an auxiliary suction pipe.

[0154] The control valve is a one-inlet and two-outlet valve, which can control the states of the two outlets respectively.

[0155] The exhaust pipe of the compressor is connected to the air inlet of the condenser through a pipeline, the exhaust port of the condenser is connected to the input end of the one-inlet and two-outlet valve through a pipeline, the first output end of the one-inlet and two-outlet valve is connected to the main capillary tube through a pipeline, the exhaust port of the main capillary tube is connected to the air inlet of the main evaporator through a pipeline, and the exhaust port of the main evaporator is connected to the main suction pipe of the compressor through a pipeline.

[0156] The first output end of the one-inlet-two-outlet valve is also connected to the air inlet of the auxiliary capillary through a pipeline, the exhaust port of the auxiliary capillary is connected to the air inlet of the auxiliary evaporator through a pipeline, and the exhaust port of the auxiliary evaporator is connected to the auxiliary suction pipe of the compressor through a pipeline.

[0157] The refrigeration system of the refrigerator provided in the present application includes two refrigeration cycles. The main refrigeration cycle is composed of a compressor, a condenser, a main capillary tube, and a main evaporator. In this refrigeration cycle, the conventional storage chamber of the refrigerator is cooled through the main evaporator through the throttling effect of the main capillary tube.

[0158] The auxiliary refrigeration cycle is composed of a compressor, a condenser, a main capillary tube, a secondary capillary tube and a secondary evaporator. In this refrigeration cycle, a lower evaporation temperature is achieved through the throttling effect of the main capillary tube and the secondary throttling of the secondary capillary tube, and the refrigerator's freezer compartment is quickly cooled down through the auxiliary evaporator.

[0159] In the present application, the refrigeration circuit is controlled by a one-in-two-outlet valve. When the quick-freeze function is not turned on, the second output end of the one-in-two-outlet valve is closed, and the refrigeration system only works on the main refrigeration circuit. At this time, the refrigeration system only cools the storage room of the refrigerator through the main evaporator. When the quick-freeze function needs to be turned on, the second output end of the one-in-two-outlet valve is opened, the first output end is closed, and the compressor inhales air through the auxiliary suction pipe. At this time, the auxiliary refrigeration cycle starts to work, and the quick-freeze chamber is cooled through the auxiliary evaporator.

[0160] The present application controls the quick freezing refrigeration circuit through a control valve, and adjusts various working conditions through a double-suction compressor. It operates under different working conditions under different functions, and can perform the quick freezing function separately, avoiding energy loss, avoiding cold loss, and improving the working efficiency of the refrigeration system.

[0161] In another embodiment provided by the present invention, the refrigerator further comprises:

[0162] Controller;

[0163] The controller is configured to:

[0164] When receiving a dual refrigeration function start instruction, the first output end and the second output end of the control valve are switched to an open state;

[0165] The double suction compressor is controlled to firstly suction and expand the refrigerant of the secondary refrigeration cycle through the secondary suction pipe, then suction and expand the refrigerant of the primary refrigeration cycle through the primary suction pipe, and then discharge the refrigerant through the exhaust pipe.

[0166] In a specific implementation of this embodiment, the refrigerator includes a controller to execute a refrigeration control process of the refrigerator.

[0167] See also Fig.10 , is a flow chart of steps executed by a controller provided in another embodiment of the present invention, wherein the controller is used to execute the following steps:

[0168] Step S1001, the refrigerator operates normally;

[0169] Step S1002, determine whether the refrigerator has a dual refrigeration function turned on. The dual refrigeration function is to turn on the refrigeration function and the quick freezing function of the storage compartment at the same time. This control process is controlled by the control instructions generated by the user trigger or the control instructions generated by the active determination according to the operating state in parallel.

[0170] If yes, execute step S1003;

[0171] If not, perform other control processes;

[0172] Step S1003, switching the first output end and the second output end of the control valve to an open state;

[0173] Step S1004, controlling the compressor to inhale and expand the refrigerant of the secondary refrigeration cycle through the secondary suction pipe;

[0174] Step S1005, controlling the compressor to inhale and expand the refrigerant of the main refrigeration cycle through the main suction pipe;

[0175] Step S1006, controlling the compressor to exhaust.

[0176] That is, after starting the rapid freezing function and the normal refrigeration function, the first output end and the second output end of the control valve are switched to the open state, and the refrigeration cycle and the auxiliary refrigeration cycle are started at the same time. The auxiliary evaporator freezes the quick freezing chamber, and the main evaporator cools the storage chamber.

[0177] The double-suction compressor performs suction and compression in stages according to the working conditions. That is, the compressor first sucks in and expands the refrigerant of the auxiliary refrigeration cycle and then sucks in and expands the refrigerant of the main refrigeration cycle to achieve two-stage suction compression, thereby increasing the system's suction and exhaust volume.

[0178] By performing suction compression in stages through a double suction compressor, the system suction and exhaust volumes can be increased, the refrigeration system power can be increased, and the blast chamber can be rapidly cooled through a secondary refrigeration cycle.

[0179] In another embodiment provided by the present invention, the refrigeration system further comprises:

[0180] a first gas-liquid separator, the main evaporator is connected to the main suction pipe through the first gas-liquid separator, and the first gas-liquid separator is used to store excess refrigerant in the main refrigeration cycle;

[0181] a second gas-liquid separator, the auxiliary evaporator is connected to the auxiliary suction pipe through the second gas-liquid separator, and the second gas-liquid separator is used to store excess refrigerant in the auxiliary refrigeration cycle;

[0182] The controller is also configured to:

[0183] When receiving a single quick-freeze function start instruction, the first output end of the control valve is switched to a closed state, and the second output end is switched to an open state;

[0184] The double suction compressor is controlled to suction and expand the refrigerant of the sub-refrigeration cycle through the sub-suction pipe, and then discharge the refrigerant through the exhaust pipe, and the second gas-liquid separator is controlled to store excess refrigerant in the sub-refrigeration cycle.

[0185] When this embodiment is implemented, see Fig.11 , is a structural schematic diagram of a refrigeration system of a refrigerator provided in yet another embodiment of the present invention.

[0186] In the refrigeration cycle provided in this embodiment, the refrigeration system further includes a first gas-liquid separator and a second gas-liquid separator, and the gas-liquid separator is used to store refrigerant.

[0187] The exhaust pipe of the compressor is connected to the air inlet of the condenser through a pipeline, the exhaust port of the condenser is connected to the input end of the one-inlet and two-outlet valve through a pipeline, the first output end of the one-inlet and two-outlet valve is connected to the main capillary through a pipeline, the exhaust port of the main capillary is connected to the air inlet of the main evaporator through a pipeline, the exhaust port of the main evaporator is connected to the air inlet of the first gas-liquid separator through a pipeline, and the exhaust port of the first gas-liquid separator is connected to the main suction pipe of the compressor through a pipeline.

[0188] The exhaust pipe of the compressor is connected to the air inlet of the condenser through a pipeline, the exhaust port of the condenser is connected to the input end of the one-inlet and two-outlet valve through a pipeline, the second output end of the one-inlet and two-outlet valve is connected to the auxiliary capillary through a pipeline, the exhaust port of the auxiliary capillary is connected to the air inlet of the auxiliary evaporator through a pipeline, the exhaust port of the auxiliary evaporator is connected to the air inlet of the second gas-liquid separator through a pipeline, and the exhaust port of the second gas-liquid separator is connected to the auxiliary suction pipe of the compressor through a pipeline.

[0189] The first gas-liquid separator is used to store excess refrigerant in the main refrigeration cycle, and the second gas-liquid separator is used to store excess refrigerant in the auxiliary refrigeration cycle.

[0190] See also Fig. 9 When it is determined in step S1002 that the dual cooling function is not turned on, perform the following steps.

[0191] Step S1007, determine whether to turn on the quick freezing function. The quick freezing function does not turn on the refrigeration function of the storage chamber, and only performs the quick freezing function on the quick freezing chamber. This control process is controlled by the control instructions triggered by the user or the control instructions generated by the active determination according to the operating status in parallel.

[0192] If so, execute step S1008.

[0193] If not, perform other controls.

[0194] Step S1008, switching the first output end of the control valve to a closed state, and switching the second output end to an open state.

[0195] Step S1009, controlling the compressor to inhale and expand the refrigerant of the secondary refrigeration cycle through the secondary suction pipe;

[0196] Step S1010, controlling the compressor to discharge the refrigerant through the exhaust pipe;

[0197] Step S1011, controlling the second gas-liquid separator to store excess refrigerant in the auxiliary refrigeration cycle.

[0198] When the single quick-freezing function is turned on in the refrigerator, only the auxiliary suction pipe of the compressor is actually connected and working. The main suction pipe has no actual suction volume because the control valve pipeline is closed. At this time, only the auxiliary refrigeration cycle system is working, and the excess refrigerant required for the operation of the auxiliary refrigeration cycle is stored through the second gas-liquid separator and does not participate in the system circulation, thereby reducing the amount of refrigerant input, reducing the amount of cold required for the refrigeration system to work, and reducing working energy consumption.

[0199] In another embodiment provided by the present invention, the controller is further configured to:

[0200] When receiving a single cooling function start instruction, the second output end of the control valve is switched to a closed state, and the first output end is switched to an open state;

[0201] The double suction compressor is controlled to expand the refrigerant of the main refrigeration cycle through the main suction pipe, and then the refrigerant is discharged through the exhaust pipe, and the first gas-liquid separator is controlled to store excess refrigerant in the main refrigeration cycle.

[0202] When this embodiment is implemented, see Fig. 9 When it is determined in step S1007 that the single quick freezing function is not turned on, the following steps are performed:

[0203] Step S1012, determine whether to turn on the refrigeration function only. The refrigeration function only means turning on the refrigeration function of the storage chamber, and not turning on the rapid freezing function of the freezing chamber. This control process is controlled by the control instructions triggered by the user or the control instructions generated by the active determination according to the operating state in parallel.

[0204] If so, execute step S1013.

[0205] If not, return to step S1002.

[0206] Step S1013, switching the second output end of the control valve to a closed state, and switching the first output end to an open state.

[0207] Step S1014, controlling the compressor to inhale and expand the refrigerant of the main refrigeration cycle through the main suction pipe;

[0208] Step S1015, controlling the compressor to discharge the refrigerant through the exhaust pipe;

[0209] Step S1016, controlling the first gas-liquid separator to store excess refrigerant in the main refrigeration cycle.

[0210] When the refrigerator turns on the single refrigeration function, only the main suction pipe of the compressor is actually connected and working, and the auxiliary suction pipe has no actual suction volume because the control valve pipeline is closed. At this time, only the main refrigeration cycle system is working, and the excess refrigerant required for the operation of the auxiliary refrigeration cycle is stored through the first gas-liquid separator and does not participate in the system circulation, thereby reducing the amount of refrigerant input, reducing the amount of cold required for the refrigeration system to work, and reducing working energy consumption.

[0211] In another embodiment provided by the present invention, the refrigerator further comprises:

[0212] A main drying filter, wherein the first output end of the control valve is connected to the main capillary tube through the main drying filter;

[0213] A secondary drying filter, wherein the second output end of the control valve is connected to the secondary capillary tube through the secondary drying filter.

[0214] When this embodiment is implemented, see Fig.10 The refrigeration system also includes a main drying filter and a secondary drying filter.

[0215] The exhaust pipe of the compressor is connected to the air inlet of the condenser through a pipeline, the exhaust port of the condenser is connected to the input end of the one-inlet and two-outlet valve through a pipeline, the first output end of the one-inlet and two-outlet valve is connected to the air inlet of the main drying filter through a pipeline, the exhaust port of the main drying filter is connected to the air inlet of the main capillary tube through a pipeline, the exhaust port of the main capillary tube is connected to the air inlet of the main evaporator through a pipeline, and the exhaust port of the main evaporator is connected to the main suction pipe of the compressor through a pipeline.

[0216] The second output end of the one-inlet and two-outlet valve is connected to the air inlet of the auxiliary drying filter through a pipeline, the exhaust port of the auxiliary drying filter is connected to the air inlet of the auxiliary capillary tube through a pipeline, the exhaust port of the auxiliary capillary tube is connected to the air inlet of the auxiliary evaporator through a pipeline, and the exhaust port of the auxiliary evaporator is connected to the auxiliary suction pipe of the compressor through a pipeline.

[0217] The filter drier is used to filter out harmful substances such as moisture, acidic substances, solid impurities and paraffin in the refrigerant to avoid hydrolysis of the refrigerant and lubricating oil, corrosion of metals, blockage of capillaries and expansion valves, and other faults.

[0218] The main refrigeration cycle and the auxiliary refrigeration cycle are filtered respectively by the main drying filter and the auxiliary drying filter to ensure the stability of the refrigeration system.

[0219] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A refrigerator, characterized in that: include: A box body, wherein at least one storage chamber and a quick freezing chamber are formed in the box body; A refrigeration system, comprising a double suction compressor, a condenser, a main capillary tube, a secondary capillary tube, a control valve, a main evaporator and a secondary evaporator; The main evaporator is used to cool the storage chamber; The auxiliary evaporator is used to cool the quick freezing chamber; The exhaust pipe of the double suction compressor is connected to the condenser, the main capillary tube and the main evaporator in sequence through a pipeline, and then connected to the main suction pipe of the double suction compressor to form a main refrigeration cycle; The exhaust pipe of the double suction compressor passes through the condenser, the main capillary tube, the control valve, the secondary capillary tube and the secondary evaporator in sequence through a pipeline, and is connected to the secondary suction pipe of the double suction compressor to form a secondary refrigeration cycle.

2. The refrigerator according to claim 1, characterized in that: The refrigerator further comprises: Controller; The controller is configured to: When receiving a command to start the rapid cooling function, the control valve which is in a closed state by default is switched to an open state; The double suction compressor is controlled to firstly suction and expand the refrigerant of the secondary refrigeration cycle through the secondary suction pipe, then suction and expand the refrigerant of the primary refrigeration cycle through the primary suction pipe, and then discharge the refrigerant through the exhaust pipe.

3. The refrigerator according to claim 2, characterized in that: The refrigeration system further comprises: A gas-liquid separator, the main evaporator is connected to the main suction pipe through the gas-liquid separator, and the gas-liquid separator is used to store refrigerant; The controller is configured to: When receiving a command to turn off the rapid cooling function, the control valve in the open state is switched to the closed state; The double suction compressor is controlled to expand the refrigerant of the main refrigeration cycle through the main suction pipe, and then the refrigerant is discharged through the exhaust pipe, and the gas-liquid separator is controlled to store excess refrigerant in the main refrigeration cycle.

4. The refrigerator according to claim 2, characterized in that: The refrigerator further comprises: A temperature sensor is disposed in the freezing chamber and is used to detect the temperature of the freezing chamber; The controller is also configured to: After receiving the rapid freezing function start instruction, detecting the current temperature of the rapid freezing chamber; When the detected current temperature is lower than the preset quick freezing temperature, the control valve is switched to a closed state and a take-out alarm is fed back.

5. The refrigerator according to claim 1, characterized in that: The refrigerator further comprises: A drying filter, wherein the condenser is connected to the main capillary tube through the drying filter.

6. A refrigerator, characterized in that: include: A box body, wherein at least one storage chamber and a quick freezing chamber are formed in the box body; A refrigeration system, the refrigeration system is used to provide coldness to cool the storage room; The refrigeration system comprises a double suction compressor, a condenser, a main capillary tube, a secondary capillary tube, a control valve, a main evaporator and a secondary evaporator; The main evaporator is used to cool the storage chamber; The auxiliary evaporator is used to cool the quick freezing chamber; The control valve is a one-inlet and two-outlet valve; The exhaust pipe of the double suction compressor is connected to the main suction pipe of the double suction compressor through a pipeline, which passes through the condenser, the input end of the control valve, the first output end of the control valve, the main capillary tube and the main evaporator in sequence, to form a main refrigeration cycle; The exhaust pipe of the double suction compressor passes through the condenser, the input end of the control valve, the second output end of the control valve, the secondary capillary tube and the secondary evaporator in sequence through a pipeline, and is connected to the secondary suction pipe of the double suction compressor to form a secondary refrigeration cycle.

7. The refrigerator according to claim 6, characterized in that: The refrigerator further comprises: Controller; The controller is configured to: When receiving a dual refrigeration function start instruction, the first output end and the second output end of the control valve are switched to an open state; The double suction compressor is controlled to firstly suction and expand the refrigerant of the secondary refrigeration cycle through the secondary suction pipe, then suction and expand the refrigerant of the primary refrigeration cycle through the primary suction pipe, and then discharge the refrigerant through the exhaust pipe.

8. The refrigerator according to claim 7, characterized in that: The refrigeration system further comprises: a first gas-liquid separator, the main evaporator is connected to the main suction pipe through the first gas-liquid separator, and the first gas-liquid separator is used to store excess refrigerant in the main refrigeration cycle; a second gas-liquid separator, the auxiliary evaporator is connected to the auxiliary suction pipe through the second gas-liquid separator, and the second gas-liquid separator is used to store excess refrigerant in the auxiliary refrigeration cycle; The controller is also configured to: When receiving a single quick-freeze function start instruction, the first output end of the control valve is switched to a closed state, and the second output end is switched to an open state; The double suction compressor is controlled to suction and expand the refrigerant of the sub-refrigeration cycle through the sub-suction pipe, and then discharge the refrigerant through the exhaust pipe, and the second gas-liquid separator is controlled to store excess refrigerant in the sub-refrigeration cycle.

9. The refrigerator according to claim 8, characterized in that: The controller is also configured to: When receiving a single cooling function start instruction, the second output end of the control valve is switched to a closed state, and the first output end is switched to an open state; The double suction compressor is controlled to expand the refrigerant of the main refrigeration cycle through the main suction pipe, and then the refrigerant is discharged through the exhaust pipe, and the first gas-liquid separator is controlled to store excess refrigerant in the main refrigeration cycle.

10. The refrigerator according to claim 6, characterized in that The refrigerator further comprises: A main drying filter, wherein the first output end of the control valve is connected to the main capillary tube through the main drying filter; A secondary drying filter, wherein the second output end of the control valve is connected to the secondary capillary tube through the secondary drying filter.

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